Re: [PATCH v2 16/16] drm/exynos: move bridge driver to bridges

[Michael Tretter <m.tretter@xxxxxxxxxxxxxx>]

On Wed, 16 Sep 2020 09:58:39 +0200, Daniel Vetter wrote:
> On Fri, Sep 11, 2020 at 03:54:13PM +0200, Michael Tretter wrote:
> > As the driver is not platform dependent anymore, move it to the drm
> > bridge driver directory.
> > 
> > Signed-off-by: Michael Tretter <m.tretter@xxxxxxxxxxxxxx>
> 
> So new drm_bridge drivers that still use the component stuff is a bit
> uncool. We're trying to get away from that everywhere, bridges should be
> abstracted enough that just going through the of lookup functions to get
> at your bridge should work.
> 
> Is there anything here that prevents this, or could this be included?

The Exynos drm driver uses the component framework. Maybe I can avoid exposing
the bind/unbind API in the drm_bridge driver by implementing the bind/unbind
in the platform specific part. However, completely getting rid of the
component framework for this drm_bridge is not possible without changing the
entire Exynos drm driver.

Michael

> -Daniel
> 
> > ---
> > v2:
> > - select DRM_SAMSUNG_DSIM from DRM_EXYNOS_DSI
> > - add removal of depends on !FB_S3C
> > ---
> >  drivers/gpu/drm/bridge/Kconfig                |    9 +
> >  drivers/gpu/drm/bridge/Makefile               |    1 +
> >  drivers/gpu/drm/bridge/samsung-dsim.c         | 1790 ++++++++++++++++
> >  drivers/gpu/drm/exynos/Kconfig                |    5 +-
> >  drivers/gpu/drm/exynos/Makefile               |    2 +-
> >  drivers/gpu/drm/exynos/exynos_drm_dsi.c       | 1896 ++---------------
> >  drivers/gpu/drm/exynos/exynos_drm_dsi_pltfm.c |  333 ---
> >  .../drm/bridge/samsung-dsim.h                 |   20 +-
> >  8 files changed, 2037 insertions(+), 2019 deletions(-)
> >  create mode 100644 drivers/gpu/drm/bridge/samsung-dsim.c
> >  delete mode 100644 drivers/gpu/drm/exynos/exynos_drm_dsi_pltfm.c
> >  rename drivers/gpu/drm/exynos/exynos_drm_dsi.h => include/drm/bridge/samsung-dsim.h (69%)
> > 
> > diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
> > index 3e11af4e9f63..55ab5030c6cf 100644
> > --- a/drivers/gpu/drm/bridge/Kconfig
> > +++ b/drivers/gpu/drm/bridge/Kconfig
> > @@ -125,6 +125,15 @@ config DRM_PARADE_PS8640
> >  	  The PS8640 is a high-performance and low-power
> >  	  MIPI DSI to eDP converter
> >  
> > +config DRM_SAMSUNG_DSIM
> > +	tristate "Samsung MIPI DSI bridge"
> > +	depends on OF
> > +	select DRM_KMS_HELPER
> > +	select DRM_MIPI_DSI
> > +	select DRM_PANEL
> > +	help
> > +	  Samsung MIPI DSI bridge driver.
> > +
> >  config DRM_SIL_SII8620
> >  	tristate "Silicon Image SII8620 HDMI/MHL bridge"
> >  	depends on OF
> > diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
> > index c589a6a7cbe1..5ac7a5c413dc 100644
> > --- a/drivers/gpu/drm/bridge/Makefile
> > +++ b/drivers/gpu/drm/bridge/Makefile
> > @@ -8,6 +8,7 @@ obj-$(CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW) += megachips-stdpxxxx-ge-b850v
> >  obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
> >  obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
> >  obj-$(CONFIG_DRM_PARADE_PS8640) += parade-ps8640.o
> > +obj-$(CONFIG_DRM_SAMSUNG_DSIM) += samsung-dsim.o
> >  obj-$(CONFIG_DRM_SIL_SII8620) += sil-sii8620.o
> >  obj-$(CONFIG_DRM_SII902X) += sii902x.o
> >  obj-$(CONFIG_DRM_SII9234) += sii9234.o
> > diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c
> > new file mode 100644
> > index 000000000000..6d2d8dc027de
> > --- /dev/null
> > +++ b/drivers/gpu/drm/bridge/samsung-dsim.c
> > @@ -0,0 +1,1790 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * Samsung SoC MIPI DSI Master driver.
> > + *
> > + * Copyright (c) 2014 Samsung Electronics Co., Ltd
> > + *
> > + * Contacts: Tomasz Figa <t.figa@xxxxxxxxxxx>
> > +*/
> > +
> > +#include <linux/clk.h>
> > +#include <linux/delay.h>
> > +#include <linux/component.h>
> > +#include <linux/gpio/consumer.h>
> > +#include <linux/irq.h>
> > +#include <linux/of_device.h>
> > +#include <linux/of_gpio.h>
> > +#include <linux/of_graph.h>
> > +#include <linux/phy/phy.h>
> > +#include <linux/regulator/consumer.h>
> > +
> > +#include <asm/unaligned.h>
> > +
> > +#include <video/mipi_display.h>
> > +#include <video/videomode.h>
> > +
> > +#include <drm/bridge/samsung-dsim.h>
> > +#include <drm/drm_atomic_helper.h>
> > +#include <drm/drm_bridge.h>
> > +#include <drm/drm_fb_helper.h>
> > +#include <drm/drm_mipi_dsi.h>
> > +#include <drm/drm_panel.h>
> > +#include <drm/drm_print.h>
> > +#include <drm/drm_probe_helper.h>
> > +#include <drm/drm_simple_kms_helper.h>
> > +
> > +/* returns true iff both arguments logically differs */
> > +#define NEQV(a, b) (!(a) ^ !(b))
> > +
> > +/* DSIM_STATUS */
> > +#define DSIM_STOP_STATE_DAT(x)		(((x) & 0xf) << 0)
> > +#define DSIM_STOP_STATE_CLK		(1 << 8)
> > +#define DSIM_TX_READY_HS_CLK		(1 << 10)
> > +#define DSIM_PLL_STABLE			(1 << 31)
> > +
> > +/* DSIM_TIMEOUT */
> > +#define DSIM_LPDR_TIMEOUT(x)		((x) << 0)
> > +#define DSIM_BTA_TIMEOUT(x)		((x) << 16)
> > +
> > +/* DSIM_CLKCTRL */
> > +#define DSIM_ESC_PRESCALER(x)		(((x) & 0xffff) << 0)
> > +#define DSIM_ESC_PRESCALER_MASK		(0xffff << 0)
> > +#define DSIM_LANE_ESC_CLK_EN_CLK	(1 << 19)
> > +#define DSIM_LANE_ESC_CLK_EN_DATA(x)	(((x) & 0xf) << 20)
> > +#define DSIM_LANE_ESC_CLK_EN_DATA_MASK	(0xf << 20)
> > +#define DSIM_BYTE_CLKEN			(1 << 24)
> > +#define DSIM_BYTE_CLK_SRC(x)		(((x) & 0x3) << 25)
> > +#define DSIM_BYTE_CLK_SRC_MASK		(0x3 << 25)
> > +#define DSIM_PLL_BYPASS			(1 << 27)
> > +#define DSIM_ESC_CLKEN			(1 << 28)
> > +#define DSIM_TX_REQUEST_HSCLK		(1 << 31)
> > +
> > +/* DSIM_CONFIG */
> > +#define DSIM_LANE_EN_CLK		(1 << 0)
> > +#define DSIM_LANE_EN(x)			(((x) & 0xf) << 1)
> > +#define DSIM_NUM_OF_DATA_LANE(x)	(((x) & 0x3) << 5)
> > +#define DSIM_SUB_PIX_FORMAT(x)		(((x) & 0x7) << 8)
> > +#define DSIM_MAIN_PIX_FORMAT_MASK	(0x7 << 12)
> > +#define DSIM_MAIN_PIX_FORMAT_RGB888	(0x7 << 12)
> > +#define DSIM_MAIN_PIX_FORMAT_RGB666	(0x6 << 12)
> > +#define DSIM_MAIN_PIX_FORMAT_RGB666_P	(0x5 << 12)
> > +#define DSIM_MAIN_PIX_FORMAT_RGB565	(0x4 << 12)
> > +#define DSIM_SUB_VC			(((x) & 0x3) << 16)
> > +#define DSIM_MAIN_VC			(((x) & 0x3) << 18)
> > +#define DSIM_HSA_MODE			(1 << 20)
> > +#define DSIM_HBP_MODE			(1 << 21)
> > +#define DSIM_HFP_MODE			(1 << 22)
> > +#define DSIM_HSE_MODE			(1 << 23)
> > +#define DSIM_AUTO_MODE			(1 << 24)
> > +#define DSIM_VIDEO_MODE			(1 << 25)
> > +#define DSIM_BURST_MODE			(1 << 26)
> > +#define DSIM_SYNC_INFORM		(1 << 27)
> > +#define DSIM_EOT_DISABLE		(1 << 28)
> > +#define DSIM_MFLUSH_VS			(1 << 29)
> > +/* This flag is valid only for exynos3250/3472/5260/5430 */
> > +#define DSIM_CLKLANE_STOP		(1 << 30)
> > +
> > +/* DSIM_ESCMODE */
> > +#define DSIM_TX_TRIGGER_RST		(1 << 4)
> > +#define DSIM_TX_LPDT_LP			(1 << 6)
> > +#define DSIM_CMD_LPDT_LP		(1 << 7)
> > +#define DSIM_FORCE_BTA			(1 << 16)
> > +#define DSIM_FORCE_STOP_STATE		(1 << 20)
> > +#define DSIM_STOP_STATE_CNT(x)		(((x) & 0x7ff) << 21)
> > +#define DSIM_STOP_STATE_CNT_MASK	(0x7ff << 21)
> > +
> > +/* DSIM_MDRESOL */
> > +#define DSIM_MAIN_STAND_BY		(1 << 31)
> > +#define DSIM_MAIN_VRESOL(x, num_bits)	(((x) & ((1 << (num_bits)) - 1)) << 16)
> > +#define DSIM_MAIN_HRESOL(x, num_bits)	(((x) & ((1 << (num_bits)) - 1)) << 0)
> > +
> > +/* DSIM_MVPORCH */
> > +#define DSIM_CMD_ALLOW(x)		((x) << 28)
> > +#define DSIM_STABLE_VFP(x)		((x) << 16)
> > +#define DSIM_MAIN_VBP(x)		((x) << 0)
> > +#define DSIM_CMD_ALLOW_MASK		(0xf << 28)
> > +#define DSIM_STABLE_VFP_MASK		(0x7ff << 16)
> > +#define DSIM_MAIN_VBP_MASK		(0x7ff << 0)
> > +
> > +/* DSIM_MHPORCH */
> > +#define DSIM_MAIN_HFP(x)		((x) << 16)
> > +#define DSIM_MAIN_HBP(x)		((x) << 0)
> > +#define DSIM_MAIN_HFP_MASK		((0xffff) << 16)
> > +#define DSIM_MAIN_HBP_MASK		((0xffff) << 0)
> > +
> > +/* DSIM_MSYNC */
> > +#define DSIM_MAIN_VSA(x)		((x) << 22)
> > +#define DSIM_MAIN_HSA(x)		((x) << 0)
> > +#define DSIM_MAIN_VSA_MASK		((0x3ff) << 22)
> > +#define DSIM_MAIN_HSA_MASK		((0xffff) << 0)
> > +
> > +/* DSIM_SDRESOL */
> > +#define DSIM_SUB_STANDY(x)		((x) << 31)
> > +#define DSIM_SUB_VRESOL(x)		((x) << 16)
> > +#define DSIM_SUB_HRESOL(x)		((x) << 0)
> > +#define DSIM_SUB_STANDY_MASK		((0x1) << 31)
> > +#define DSIM_SUB_VRESOL_MASK		((0x7ff) << 16)
> > +#define DSIM_SUB_HRESOL_MASK		((0x7ff) << 0)
> > +
> > +/* DSIM_INTSRC */
> > +#define DSIM_INT_PLL_STABLE		(1 << 31)
> > +#define DSIM_INT_SW_RST_RELEASE		(1 << 30)
> > +#define DSIM_INT_SFR_FIFO_EMPTY		(1 << 29)
> > +#define DSIM_INT_SFR_HDR_FIFO_EMPTY	(1 << 28)
> > +#define DSIM_INT_BTA			(1 << 25)
> > +#define DSIM_INT_FRAME_DONE		(1 << 24)
> > +#define DSIM_INT_RX_TIMEOUT		(1 << 21)
> > +#define DSIM_INT_BTA_TIMEOUT		(1 << 20)
> > +#define DSIM_INT_RX_DONE		(1 << 18)
> > +#define DSIM_INT_RX_TE			(1 << 17)
> > +#define DSIM_INT_RX_ACK			(1 << 16)
> > +#define DSIM_INT_RX_ECC_ERR		(1 << 15)
> > +#define DSIM_INT_RX_CRC_ERR		(1 << 14)
> > +
> > +/* DSIM_FIFOCTRL */
> > +#define DSIM_RX_DATA_FULL		(1 << 25)
> > +#define DSIM_RX_DATA_EMPTY		(1 << 24)
> > +#define DSIM_SFR_HEADER_FULL		(1 << 23)
> > +#define DSIM_SFR_HEADER_EMPTY		(1 << 22)
> > +#define DSIM_SFR_PAYLOAD_FULL		(1 << 21)
> > +#define DSIM_SFR_PAYLOAD_EMPTY		(1 << 20)
> > +#define DSIM_I80_HEADER_FULL		(1 << 19)
> > +#define DSIM_I80_HEADER_EMPTY		(1 << 18)
> > +#define DSIM_I80_PAYLOAD_FULL		(1 << 17)
> > +#define DSIM_I80_PAYLOAD_EMPTY		(1 << 16)
> > +#define DSIM_SD_HEADER_FULL		(1 << 15)
> > +#define DSIM_SD_HEADER_EMPTY		(1 << 14)
> > +#define DSIM_SD_PAYLOAD_FULL		(1 << 13)
> > +#define DSIM_SD_PAYLOAD_EMPTY		(1 << 12)
> > +#define DSIM_MD_HEADER_FULL		(1 << 11)
> > +#define DSIM_MD_HEADER_EMPTY		(1 << 10)
> > +#define DSIM_MD_PAYLOAD_FULL		(1 << 9)
> > +#define DSIM_MD_PAYLOAD_EMPTY		(1 << 8)
> > +#define DSIM_RX_FIFO			(1 << 4)
> > +#define DSIM_SFR_FIFO			(1 << 3)
> > +#define DSIM_I80_FIFO			(1 << 2)
> > +#define DSIM_SD_FIFO			(1 << 1)
> > +#define DSIM_MD_FIFO			(1 << 0)
> > +
> > +/* DSIM_PHYACCHR */
> > +#define DSIM_AFC_EN			(1 << 14)
> > +#define DSIM_AFC_CTL(x)			(((x) & 0x7) << 5)
> > +
> > +/* DSIM_PLLCTRL */
> > +#define DSIM_FREQ_BAND(x)		((x) << 24)
> > +#define DSIM_PLL_EN			(1 << 23)
> > +#define DSIM_PLL_P(x)			((x) << 13)
> > +#define DSIM_PLL_M(x)			((x) << 4)
> > +#define DSIM_PLL_S(x)			((x) << 1)
> > +
> > +/* DSIM_PHYCTRL */
> > +#define DSIM_PHYCTRL_ULPS_EXIT(x)	(((x) & 0x1ff) << 0)
> > +#define DSIM_PHYCTRL_B_DPHYCTL_VREG_LP	(1 << 30)
> > +#define DSIM_PHYCTRL_B_DPHYCTL_SLEW_UP	(1 << 14)
> > +
> > +/* DSIM_PHYTIMING */
> > +#define DSIM_PHYTIMING_LPX(x)		((x) << 8)
> > +#define DSIM_PHYTIMING_HS_EXIT(x)	((x) << 0)
> > +
> > +/* DSIM_PHYTIMING1 */
> > +#define DSIM_PHYTIMING1_CLK_PREPARE(x)	((x) << 24)
> > +#define DSIM_PHYTIMING1_CLK_ZERO(x)	((x) << 16)
> > +#define DSIM_PHYTIMING1_CLK_POST(x)	((x) << 8)
> > +#define DSIM_PHYTIMING1_CLK_TRAIL(x)	((x) << 0)
> > +
> > +/* DSIM_PHYTIMING2 */
> > +#define DSIM_PHYTIMING2_HS_PREPARE(x)	((x) << 16)
> > +#define DSIM_PHYTIMING2_HS_ZERO(x)	((x) << 8)
> > +#define DSIM_PHYTIMING2_HS_TRAIL(x)	((x) << 0)
> > +
> > +#define DSI_MAX_BUS_WIDTH		4
> > +#define DSI_NUM_VIRTUAL_CHANNELS	4
> > +#define DSI_TX_FIFO_SIZE		2048
> > +#define DSI_RX_FIFO_SIZE		256
> > +#define DSI_XFER_TIMEOUT_MS		100
> > +#define DSI_RX_FIFO_EMPTY		0x30800002
> > +
> > +#define OLD_SCLK_MIPI_CLK_NAME "pll_clk"
> > +
> > +static const char *const clk_names[5] = { "bus_clk", "sclk_mipi",
> > +	"phyclk_mipidphy0_bitclkdiv8", "phyclk_mipidphy0_rxclkesc0",
> > +	"sclk_rgb_vclk_to_dsim0" };
> > +
> > +enum samsung_dsim_transfer_type {
> > +	EXYNOS_DSI_TX,
> > +	EXYNOS_DSI_RX,
> > +};
> > +
> > +struct samsung_dsim_transfer {
> > +	struct list_head list;
> > +	struct completion completed;
> > +	int result;
> > +	struct mipi_dsi_packet packet;
> > +	u16 flags;
> > +	u16 tx_done;
> > +
> > +	u8 *rx_payload;
> > +	u16 rx_len;
> > +	u16 rx_done;
> > +};
> > +
> > +#define DSIM_STATE_ENABLED		BIT(0)
> > +#define DSIM_STATE_INITIALIZED		BIT(1)
> > +#define DSIM_STATE_CMD_LPM		BIT(2)
> > +#define DSIM_STATE_VIDOUT_AVAILABLE	BIT(3)
> > +
> > +struct samsung_dsim {
> > +	struct drm_bridge bridge;
> > +	struct mipi_dsi_host dsi_host;
> > +	struct drm_connector connector;
> > +	struct drm_panel *panel;
> > +	struct list_head bridge_chain;
> > +	struct drm_bridge *out_bridge;
> > +	struct device *dev;
> > +
> > +	void __iomem *reg_base;
> > +	struct phy *phy;
> > +	struct clk **clks;
> > +	struct regulator_bulk_data supplies[2];
> > +	int irq;
> > +	int te_gpio;
> > +
> > +	u32 pll_clk_rate;
> > +	u32 burst_clk_rate;
> > +	u32 esc_clk_rate;
> > +	u32 lanes;
> > +	u32 mode_flags;
> > +	u32 format;
> > +
> > +	struct drm_display_mode mode;
> > +
> > +	int state;
> > +	struct drm_property *brightness;
> > +	struct completion completed;
> > +
> > +	spinlock_t transfer_lock; /* protects transfer_list */
> > +	struct list_head transfer_list;
> > +
> > +	const struct samsung_dsim_driver_data *driver_data;
> > +};
> > +
> > +#define host_to_dsi(host) container_of(host, struct samsung_dsim, dsi_host)
> > +#define connector_to_dsi(c) container_of(c, struct samsung_dsim, connector)
> > +
> > +enum reg_idx {
> > +	DSIM_STATUS_REG,	/* Status register */
> > +	DSIM_SWRST_REG,		/* Software reset register */
> > +	DSIM_CLKCTRL_REG,	/* Clock control register */
> > +	DSIM_TIMEOUT_REG,	/* Time out register */
> > +	DSIM_CONFIG_REG,	/* Configuration register */
> > +	DSIM_ESCMODE_REG,	/* Escape mode register */
> > +	DSIM_MDRESOL_REG,
> > +	DSIM_MVPORCH_REG,	/* Main display Vporch register */
> > +	DSIM_MHPORCH_REG,	/* Main display Hporch register */
> > +	DSIM_MSYNC_REG,		/* Main display sync area register */
> > +	DSIM_INTSRC_REG,	/* Interrupt source register */
> > +	DSIM_INTMSK_REG,	/* Interrupt mask register */
> > +	DSIM_PKTHDR_REG,	/* Packet Header FIFO register */
> > +	DSIM_PAYLOAD_REG,	/* Payload FIFO register */
> > +	DSIM_RXFIFO_REG,	/* Read FIFO register */
> > +	DSIM_FIFOCTRL_REG,	/* FIFO status and control register */
> > +	DSIM_PLLCTRL_REG,	/* PLL control register */
> > +	DSIM_PHYCTRL_REG,
> > +	DSIM_PHYTIMING_REG,
> > +	DSIM_PHYTIMING1_REG,
> > +	DSIM_PHYTIMING2_REG,
> > +	NUM_REGS
> > +};
> > +
> > +static const unsigned int exynos_reg_ofs[] = {
> > +	[DSIM_STATUS_REG] =  0x00,
> > +	[DSIM_SWRST_REG] =  0x04,
> > +	[DSIM_CLKCTRL_REG] =  0x08,
> > +	[DSIM_TIMEOUT_REG] =  0x0c,
> > +	[DSIM_CONFIG_REG] =  0x10,
> > +	[DSIM_ESCMODE_REG] =  0x14,
> > +	[DSIM_MDRESOL_REG] =  0x18,
> > +	[DSIM_MVPORCH_REG] =  0x1c,
> > +	[DSIM_MHPORCH_REG] =  0x20,
> > +	[DSIM_MSYNC_REG] =  0x24,
> > +	[DSIM_INTSRC_REG] =  0x2c,
> > +	[DSIM_INTMSK_REG] =  0x30,
> > +	[DSIM_PKTHDR_REG] =  0x34,
> > +	[DSIM_PAYLOAD_REG] =  0x38,
> > +	[DSIM_RXFIFO_REG] =  0x3c,
> > +	[DSIM_FIFOCTRL_REG] =  0x44,
> > +	[DSIM_PLLCTRL_REG] =  0x4c,
> > +	[DSIM_PHYCTRL_REG] =  0x5c,
> > +	[DSIM_PHYTIMING_REG] =  0x64,
> > +	[DSIM_PHYTIMING1_REG] =  0x68,
> > +	[DSIM_PHYTIMING2_REG] =  0x6c,
> > +};
> > +
> > +static const unsigned int exynos5433_reg_ofs[] = {
> > +	[DSIM_STATUS_REG] = 0x04,
> > +	[DSIM_SWRST_REG] = 0x0C,
> > +	[DSIM_CLKCTRL_REG] = 0x10,
> > +	[DSIM_TIMEOUT_REG] = 0x14,
> > +	[DSIM_CONFIG_REG] = 0x18,
> > +	[DSIM_ESCMODE_REG] = 0x1C,
> > +	[DSIM_MDRESOL_REG] = 0x20,
> > +	[DSIM_MVPORCH_REG] = 0x24,
> > +	[DSIM_MHPORCH_REG] = 0x28,
> > +	[DSIM_MSYNC_REG] = 0x2C,
> > +	[DSIM_INTSRC_REG] = 0x34,
> > +	[DSIM_INTMSK_REG] = 0x38,
> > +	[DSIM_PKTHDR_REG] = 0x3C,
> > +	[DSIM_PAYLOAD_REG] = 0x40,
> > +	[DSIM_RXFIFO_REG] = 0x44,
> > +	[DSIM_FIFOCTRL_REG] = 0x4C,
> > +	[DSIM_PLLCTRL_REG] = 0x94,
> > +	[DSIM_PHYCTRL_REG] = 0xA4,
> > +	[DSIM_PHYTIMING_REG] = 0xB4,
> > +	[DSIM_PHYTIMING1_REG] = 0xB8,
> > +	[DSIM_PHYTIMING2_REG] = 0xBC,
> > +};
> > +
> > +static inline void samsung_dsim_write(struct samsung_dsim *dsi,
> > +				      enum reg_idx idx, u32 val)
> > +{
> > +	const unsigned int *reg_ofs;
> > +
> > +	if (dsi->driver_data->reg_ofs == EXYNOS5433_REG_OFS)
> > +		reg_ofs = exynos5433_reg_ofs;
> > +	else
> > +		reg_ofs = exynos_reg_ofs;
> > +
> > +	writel(val, dsi->reg_base + reg_ofs[idx]);
> > +}
> > +
> > +static inline u32 samsung_dsim_read(struct samsung_dsim *dsi, enum reg_idx idx)
> > +{
> > +	const unsigned int *reg_ofs;
> > +
> > +	if (dsi->driver_data->reg_ofs == EXYNOS5433_REG_OFS)
> > +		reg_ofs = exynos5433_reg_ofs;
> > +	else
> > +		reg_ofs = exynos_reg_ofs;
> > +
> > +	return readl(dsi->reg_base + reg_ofs[idx]);
> > +}
> > +
> > +static void samsung_dsim_wait_for_reset(struct samsung_dsim *dsi)
> > +{
> > +	if (wait_for_completion_timeout(&dsi->completed, msecs_to_jiffies(300)))
> > +		return;
> > +
> > +	dev_err(dsi->dev, "timeout waiting for reset\n");
> > +}
> > +
> > +static void samsung_dsim_reset(struct samsung_dsim *dsi)
> > +{
> > +	u32 reset_val = dsi->driver_data->reg_values[RESET_TYPE];
> > +
> > +	reinit_completion(&dsi->completed);
> > +	samsung_dsim_write(dsi, DSIM_SWRST_REG, reset_val);
> > +}
> > +
> > +#ifndef MHZ
> > +#define MHZ	(1000*1000)
> > +#endif
> > +
> > +static unsigned long samsung_dsim_pll_find_pms(struct samsung_dsim *dsi,
> > +					       unsigned long fin,
> > +					       unsigned long fout,
> > +					       u8 *p, u16 *m, u8 *s)
> > +{
> > +	const struct samsung_dsim_driver_data *driver_data = dsi->driver_data;
> > +	unsigned long best_freq = 0;
> > +	u32 min_delta = 0xffffffff;
> > +	u8 p_min, p_max;
> > +	u8 _p, best_p;
> > +	u16 _m, best_m;
> > +	u8 _s, best_s;
> > +
> > +	p_min = DIV_ROUND_UP(fin, (12 * MHZ));
> > +	p_max = fin / (6 * MHZ);
> > +
> > +	for (_p = p_min; _p <= p_max; ++_p) {
> > +		for (_s = 0; _s <= 5; ++_s) {
> > +			u64 tmp;
> > +			u32 delta;
> > +
> > +			tmp = (u64)fout * (_p << _s);
> > +			do_div(tmp, fin);
> > +			_m = tmp;
> > +			if (_m < 41 || _m > 125)
> > +				continue;
> > +
> > +			tmp = (u64)_m * fin;
> > +			do_div(tmp, _p);
> > +			if (tmp < 500 * MHZ ||
> > +					tmp > driver_data->max_freq * MHZ)
> > +				continue;
> > +
> > +			tmp = (u64)_m * fin;
> > +			do_div(tmp, _p << _s);
> > +
> > +			delta = abs(fout - tmp);
> > +			if (delta < min_delta) {
> > +				best_p = _p;
> > +				best_m = _m;
> > +				best_s = _s;
> > +				min_delta = delta;
> > +				best_freq = tmp;
> > +			}
> > +		}
> > +	}
> > +
> > +	if (best_freq) {
> > +		*p = best_p;
> > +		*m = best_m;
> > +		*s = best_s;
> > +	}
> > +
> > +	return best_freq;
> > +}
> > +
> > +static unsigned long samsung_dsim_set_pll(struct samsung_dsim *dsi,
> > +					  unsigned long freq)
> > +{
> > +	const struct samsung_dsim_driver_data *driver_data = dsi->driver_data;
> > +	unsigned long fin, fout;
> > +	int timeout;
> > +	u8 p, s;
> > +	u16 m;
> > +	u32 reg;
> > +
> > +	fin = dsi->pll_clk_rate;
> > +	fout = samsung_dsim_pll_find_pms(dsi, fin, freq, &p, &m, &s);
> > +	if (!fout) {
> > +		dev_err(dsi->dev,
> > +			"failed to find PLL PMS for requested frequency\n");
> > +		return 0;
> > +	}
> > +	dev_dbg(dsi->dev, "PLL freq %lu, (p %d, m %d, s %d)\n", fout, p, m, s);
> > +
> > +	writel(driver_data->reg_values[PLL_TIMER],
> > +			dsi->reg_base + driver_data->plltmr_reg);
> > +
> > +	reg = DSIM_PLL_EN | DSIM_PLL_P(p) | DSIM_PLL_M(m) | DSIM_PLL_S(s);
> > +
> > +	if (driver_data->has_freqband) {
> > +		static const unsigned long freq_bands[] = {
> > +			100 * MHZ, 120 * MHZ, 160 * MHZ, 200 * MHZ,
> > +			270 * MHZ, 320 * MHZ, 390 * MHZ, 450 * MHZ,
> > +			510 * MHZ, 560 * MHZ, 640 * MHZ, 690 * MHZ,
> > +			770 * MHZ, 870 * MHZ, 950 * MHZ,
> > +		};
> > +		int band;
> > +
> > +		for (band = 0; band < ARRAY_SIZE(freq_bands); ++band)
> > +			if (fout < freq_bands[band])
> > +				break;
> > +
> > +		dev_dbg(dsi->dev, "band %d\n", band);
> > +
> > +		reg |= DSIM_FREQ_BAND(band);
> > +	}
> > +
> > +	samsung_dsim_write(dsi, DSIM_PLLCTRL_REG, reg);
> > +
> > +	timeout = 1000;
> > +	do {
> > +		if (timeout-- == 0) {
> > +			dev_err(dsi->dev, "PLL failed to stabilize\n");
> > +			return 0;
> > +		}
> > +		reg = samsung_dsim_read(dsi, DSIM_STATUS_REG);
> > +	} while ((reg & DSIM_PLL_STABLE) == 0);
> > +
> > +	return fout;
> > +}
> > +
> > +static int samsung_dsim_enable_clock(struct samsung_dsim *dsi)
> > +{
> > +	unsigned long hs_clk, byte_clk, esc_clk;
> > +	unsigned long esc_div;
> > +	u32 reg;
> > +
> > +	hs_clk = samsung_dsim_set_pll(dsi, dsi->burst_clk_rate);
> > +	if (!hs_clk) {
> > +		dev_err(dsi->dev, "failed to configure DSI PLL\n");
> > +		return -EFAULT;
> > +	}
> > +
> > +	byte_clk = hs_clk / 8;
> > +	esc_div = DIV_ROUND_UP(byte_clk, dsi->esc_clk_rate);
> > +	esc_clk = byte_clk / esc_div;
> > +
> > +	if (esc_clk > 20 * MHZ) {
> > +		++esc_div;
> > +		esc_clk = byte_clk / esc_div;
> > +	}
> > +
> > +	dev_dbg(dsi->dev, "hs_clk = %lu, byte_clk = %lu, esc_clk = %lu\n",
> > +		hs_clk, byte_clk, esc_clk);
> > +
> > +	reg = samsung_dsim_read(dsi, DSIM_CLKCTRL_REG);
> > +	reg &= ~(DSIM_ESC_PRESCALER_MASK | DSIM_LANE_ESC_CLK_EN_CLK
> > +			| DSIM_LANE_ESC_CLK_EN_DATA_MASK | DSIM_PLL_BYPASS
> > +			| DSIM_BYTE_CLK_SRC_MASK);
> > +	reg |= DSIM_ESC_CLKEN | DSIM_BYTE_CLKEN
> > +			| DSIM_ESC_PRESCALER(esc_div)
> > +			| DSIM_LANE_ESC_CLK_EN_CLK
> > +			| DSIM_LANE_ESC_CLK_EN_DATA(BIT(dsi->lanes) - 1)
> > +			| DSIM_BYTE_CLK_SRC(0)
> > +			| DSIM_TX_REQUEST_HSCLK;
> > +	samsung_dsim_write(dsi, DSIM_CLKCTRL_REG, reg);
> > +
> > +	return 0;
> > +}
> > +
> > +static void samsung_dsim_set_phy_ctrl(struct samsung_dsim *dsi)
> > +{
> > +	const struct samsung_dsim_driver_data *driver_data = dsi->driver_data;
> > +	const unsigned int *reg_values = driver_data->reg_values;
> > +	u32 reg;
> > +
> > +	if (driver_data->has_freqband)
> > +		return;
> > +
> > +	/* B D-PHY: D-PHY Master & Slave Analog Block control */
> > +	reg = DSIM_PHYCTRL_ULPS_EXIT(reg_values[PHYCTRL_ULPS_EXIT]);
> > +	if (reg_values[PHYCTRL_VREG_LP])
> > +		reg |= DSIM_PHYCTRL_B_DPHYCTL_VREG_LP;
> > +	if (reg_values[PHYCTRL_SLEW_UP])
> > +		reg |= DSIM_PHYCTRL_B_DPHYCTL_SLEW_UP;
> > +	samsung_dsim_write(dsi, DSIM_PHYCTRL_REG, reg);
> > +
> > +	/*
> > +	 * T LPX: Transmitted length of any Low-Power state period
> > +	 * T HS-EXIT: Time that the transmitter drives LP-11 following a HS
> > +	 *	burst
> > +	 */
> > +	reg = DSIM_PHYTIMING_LPX(reg_values[PHYTIMING_LPX]) |
> > +		DSIM_PHYTIMING_HS_EXIT(reg_values[PHYTIMING_HS_EXIT]);
> > +	samsung_dsim_write(dsi, DSIM_PHYTIMING_REG, reg);
> > +
> > +	/*
> > +	 * T CLK-PREPARE: Time that the transmitter drives the Clock Lane LP-00
> > +	 *	Line state immediately before the HS-0 Line state starting the
> > +	 *	HS transmission
> > +	 * T CLK-ZERO: Time that the transmitter drives the HS-0 state prior to
> > +	 *	transmitting the Clock.
> > +	 * T CLK_POST: Time that the transmitter continues to send HS clock
> > +	 *	after the last associated Data Lane has transitioned to LP Mode
> > +	 *	Interval is defined as the period from the end of T HS-TRAIL to
> > +	 *	the beginning of T CLK-TRAIL
> > +	 * T CLK-TRAIL: Time that the transmitter drives the HS-0 state after
> > +	 *	the last payload clock bit of a HS transmission burst
> > +	 */
> > +	reg = DSIM_PHYTIMING1_CLK_PREPARE(reg_values[PHYTIMING_CLK_PREPARE]) |
> > +		DSIM_PHYTIMING1_CLK_ZERO(reg_values[PHYTIMING_CLK_ZERO]) |
> > +		DSIM_PHYTIMING1_CLK_POST(reg_values[PHYTIMING_CLK_POST]) |
> > +		DSIM_PHYTIMING1_CLK_TRAIL(reg_values[PHYTIMING_CLK_TRAIL]);
> > +	samsung_dsim_write(dsi, DSIM_PHYTIMING1_REG, reg);
> > +
> > +	/*
> > +	 * T HS-PREPARE: Time that the transmitter drives the Data Lane LP-00
> > +	 *	Line state immediately before the HS-0 Line state starting the
> > +	 *	HS transmission
> > +	 * T HS-ZERO: Time that the transmitter drives the HS-0 state prior to
> > +	 *	transmitting the Sync sequence.
> > +	 * T HS-TRAIL: Time that the transmitter drives the flipped differential
> > +	 *	state after last payload data bit of a HS transmission burst
> > +	 */
> > +	reg = DSIM_PHYTIMING2_HS_PREPARE(reg_values[PHYTIMING_HS_PREPARE]) |
> > +		DSIM_PHYTIMING2_HS_ZERO(reg_values[PHYTIMING_HS_ZERO]) |
> > +		DSIM_PHYTIMING2_HS_TRAIL(reg_values[PHYTIMING_HS_TRAIL]);
> > +	samsung_dsim_write(dsi, DSIM_PHYTIMING2_REG, reg);
> > +}
> > +
> > +static void samsung_dsim_disable_clock(struct samsung_dsim *dsi)
> > +{
> > +	u32 reg;
> > +
> > +	reg = samsung_dsim_read(dsi, DSIM_CLKCTRL_REG);
> > +	reg &= ~(DSIM_LANE_ESC_CLK_EN_CLK | DSIM_LANE_ESC_CLK_EN_DATA_MASK
> > +			| DSIM_ESC_CLKEN | DSIM_BYTE_CLKEN);
> > +	samsung_dsim_write(dsi, DSIM_CLKCTRL_REG, reg);
> > +
> > +	reg = samsung_dsim_read(dsi, DSIM_PLLCTRL_REG);
> > +	reg &= ~DSIM_PLL_EN;
> > +	samsung_dsim_write(dsi, DSIM_PLLCTRL_REG, reg);
> > +}
> > +
> > +static void samsung_dsim_enable_lane(struct samsung_dsim *dsi, u32 lane)
> > +{
> > +	u32 reg = samsung_dsim_read(dsi, DSIM_CONFIG_REG);
> > +	reg |= (DSIM_NUM_OF_DATA_LANE(dsi->lanes - 1) | DSIM_LANE_EN_CLK |
> > +			DSIM_LANE_EN(lane));
> > +	samsung_dsim_write(dsi, DSIM_CONFIG_REG, reg);
> > +}
> > +
> > +static int samsung_dsim_init_link(struct samsung_dsim *dsi)
> > +{
> > +	const struct samsung_dsim_driver_data *driver_data = dsi->driver_data;
> > +	int timeout;
> > +	u32 reg;
> > +	u32 lanes_mask;
> > +
> > +	/* Initialize FIFO pointers */
> > +	reg = samsung_dsim_read(dsi, DSIM_FIFOCTRL_REG);
> > +	reg &= ~0x1f;
> > +	samsung_dsim_write(dsi, DSIM_FIFOCTRL_REG, reg);
> > +
> > +	usleep_range(9000, 11000);
> > +
> > +	reg |= 0x1f;
> > +	samsung_dsim_write(dsi, DSIM_FIFOCTRL_REG, reg);
> > +	usleep_range(9000, 11000);
> > +
> > +	/* DSI configuration */
> > +	reg = 0;
> > +
> > +	/*
> > +	 * The first bit of mode_flags specifies display configuration.
> > +	 * If this bit is set[= MIPI_DSI_MODE_VIDEO], dsi will support video
> > +	 * mode, otherwise it will support command mode.
> > +	 */
> > +	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
> > +		reg |= DSIM_VIDEO_MODE;
> > +
> > +		/*
> > +		 * The user manual describes that following bits are ignored in
> > +		 * command mode.
> > +		 */
> > +		if (!(dsi->mode_flags & MIPI_DSI_MODE_VSYNC_FLUSH))
> > +			reg |= DSIM_MFLUSH_VS;
> > +		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
> > +			reg |= DSIM_SYNC_INFORM;
> > +		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
> > +			reg |= DSIM_BURST_MODE;
> > +		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_AUTO_VERT)
> > +			reg |= DSIM_AUTO_MODE;
> > +		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSE)
> > +			reg |= DSIM_HSE_MODE;
> > +		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HFP))
> > +			reg |= DSIM_HFP_MODE;
> > +		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HBP))
> > +			reg |= DSIM_HBP_MODE;
> > +		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSA))
> > +			reg |= DSIM_HSA_MODE;
> > +	}
> > +
> > +	if (!(dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET))
> > +		reg |= DSIM_EOT_DISABLE;
> > +
> > +	switch (dsi->format) {
> > +	case MIPI_DSI_FMT_RGB888:
> > +		reg |= DSIM_MAIN_PIX_FORMAT_RGB888;
> > +		break;
> > +	case MIPI_DSI_FMT_RGB666:
> > +		reg |= DSIM_MAIN_PIX_FORMAT_RGB666;
> > +		break;
> > +	case MIPI_DSI_FMT_RGB666_PACKED:
> > +		reg |= DSIM_MAIN_PIX_FORMAT_RGB666_P;
> > +		break;
> > +	case MIPI_DSI_FMT_RGB565:
> > +		reg |= DSIM_MAIN_PIX_FORMAT_RGB565;
> > +		break;
> > +	default:
> > +		dev_err(dsi->dev, "invalid pixel format\n");
> > +		return -EINVAL;
> > +	}
> > +
> > +	/*
> > +	 * Use non-continuous clock mode if the periparal wants and
> > +	 * host controller supports
> > +	 *
> > +	 * In non-continous clock mode, host controller will turn off
> > +	 * the HS clock between high-speed transmissions to reduce
> > +	 * power consumption.
> > +	 */
> > +	if (driver_data->has_clklane_stop &&
> > +			dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) {
> > +		reg |= DSIM_CLKLANE_STOP;
> > +	}
> > +	samsung_dsim_write(dsi, DSIM_CONFIG_REG, reg);
> > +
> > +	lanes_mask = BIT(dsi->lanes) - 1;
> > +	samsung_dsim_enable_lane(dsi, lanes_mask);
> > +
> > +	/* Check clock and data lane state are stop state */
> > +	timeout = 100;
> > +	do {
> > +		if (timeout-- == 0) {
> > +			dev_err(dsi->dev, "waiting for bus lanes timed out\n");
> > +			return -EFAULT;
> > +		}
> > +
> > +		reg = samsung_dsim_read(dsi, DSIM_STATUS_REG);
> > +		if ((reg & DSIM_STOP_STATE_DAT(lanes_mask))
> > +		    != DSIM_STOP_STATE_DAT(lanes_mask))
> > +			continue;
> > +	} while (!(reg & (DSIM_STOP_STATE_CLK | DSIM_TX_READY_HS_CLK)));
> > +
> > +	reg = samsung_dsim_read(dsi, DSIM_ESCMODE_REG);
> > +	reg &= ~DSIM_STOP_STATE_CNT_MASK;
> > +	reg |= DSIM_STOP_STATE_CNT(driver_data->reg_values[STOP_STATE_CNT]);
> > +	samsung_dsim_write(dsi, DSIM_ESCMODE_REG, reg);
> > +
> > +	reg = DSIM_BTA_TIMEOUT(0xff) | DSIM_LPDR_TIMEOUT(0xffff);
> > +	samsung_dsim_write(dsi, DSIM_TIMEOUT_REG, reg);
> > +
> > +	return 0;
> > +}
> > +
> > +static void samsung_dsim_set_display_mode(struct samsung_dsim *dsi)
> > +{
> > +	struct drm_display_mode *m = &dsi->mode;
> > +	unsigned int num_bits_resol = dsi->driver_data->num_bits_resol;
> > +	u32 reg;
> > +
> > +	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
> > +		reg = DSIM_CMD_ALLOW(0xf)
> > +			| DSIM_STABLE_VFP(m->vsync_start - m->vdisplay)
> > +			| DSIM_MAIN_VBP(m->vtotal - m->vsync_end);
> > +		samsung_dsim_write(dsi, DSIM_MVPORCH_REG, reg);
> > +
> > +		reg = DSIM_MAIN_HFP(m->hsync_start - m->hdisplay)
> > +			| DSIM_MAIN_HBP(m->htotal - m->hsync_end);
> > +		samsung_dsim_write(dsi, DSIM_MHPORCH_REG, reg);
> > +
> > +		reg = DSIM_MAIN_VSA(m->vsync_end - m->vsync_start)
> > +			| DSIM_MAIN_HSA(m->hsync_end - m->hsync_start);
> > +		samsung_dsim_write(dsi, DSIM_MSYNC_REG, reg);
> > +	}
> > +	reg =  DSIM_MAIN_HRESOL(m->hdisplay, num_bits_resol) |
> > +		DSIM_MAIN_VRESOL(m->vdisplay, num_bits_resol);
> > +
> > +	samsung_dsim_write(dsi, DSIM_MDRESOL_REG, reg);
> > +
> > +	dev_dbg(dsi->dev, "LCD size = %dx%d\n", m->hdisplay, m->vdisplay);
> > +}
> > +
> > +static void samsung_dsim_set_display_enable(struct samsung_dsim *dsi,
> > +					    bool enable)
> > +{
> > +	u32 reg;
> > +
> > +	reg = samsung_dsim_read(dsi, DSIM_MDRESOL_REG);
> > +	if (enable)
> > +		reg |= DSIM_MAIN_STAND_BY;
> > +	else
> > +		reg &= ~DSIM_MAIN_STAND_BY;
> > +	samsung_dsim_write(dsi, DSIM_MDRESOL_REG, reg);
> > +}
> > +
> > +static int samsung_dsim_wait_for_hdr_fifo(struct samsung_dsim *dsi)
> > +{
> > +	int timeout = 2000;
> > +
> > +	do {
> > +		u32 reg = samsung_dsim_read(dsi, DSIM_FIFOCTRL_REG);
> > +
> > +		if (!(reg & DSIM_SFR_HEADER_FULL))
> > +			return 0;
> > +
> > +		if (!cond_resched())
> > +			usleep_range(950, 1050);
> > +	} while (--timeout);
> > +
> > +	return -ETIMEDOUT;
> > +}
> > +
> > +static void samsung_dsim_set_cmd_lpm(struct samsung_dsim *dsi, bool lpm)
> > +{
> > +	u32 v = samsung_dsim_read(dsi, DSIM_ESCMODE_REG);
> > +
> > +	if (lpm)
> > +		v |= DSIM_CMD_LPDT_LP;
> > +	else
> > +		v &= ~DSIM_CMD_LPDT_LP;
> > +
> > +	samsung_dsim_write(dsi, DSIM_ESCMODE_REG, v);
> > +}
> > +
> > +static void samsung_dsim_force_bta(struct samsung_dsim *dsi)
> > +{
> > +	u32 v = samsung_dsim_read(dsi, DSIM_ESCMODE_REG);
> > +	v |= DSIM_FORCE_BTA;
> > +	samsung_dsim_write(dsi, DSIM_ESCMODE_REG, v);
> > +}
> > +
> > +static void samsung_dsim_send_to_fifo(struct samsung_dsim *dsi,
> > +				      struct samsung_dsim_transfer *xfer)
> > +{
> > +	struct device *dev = dsi->dev;
> > +	struct mipi_dsi_packet *pkt = &xfer->packet;
> > +	const u8 *payload = pkt->payload + xfer->tx_done;
> > +	u16 length = pkt->payload_length - xfer->tx_done;
> > +	bool first = !xfer->tx_done;
> > +	u32 reg;
> > +
> > +	dev_dbg(dev, "< xfer %pK: tx len %u, done %u, rx len %u, done %u\n",
> > +		xfer, length, xfer->tx_done, xfer->rx_len, xfer->rx_done);
> > +
> > +	if (length > DSI_TX_FIFO_SIZE)
> > +		length = DSI_TX_FIFO_SIZE;
> > +
> > +	xfer->tx_done += length;
> > +
> > +	/* Send payload */
> > +	while (length >= 4) {
> > +		reg = get_unaligned_le32(payload);
> > +		samsung_dsim_write(dsi, DSIM_PAYLOAD_REG, reg);
> > +		payload += 4;
> > +		length -= 4;
> > +	}
> > +
> > +	reg = 0;
> > +	switch (length) {
> > +	case 3:
> > +		reg |= payload[2] << 16;
> > +		fallthrough;
> > +	case 2:
> > +		reg |= payload[1] << 8;
> > +		fallthrough;
> > +	case 1:
> > +		reg |= payload[0];
> > +		samsung_dsim_write(dsi, DSIM_PAYLOAD_REG, reg);
> > +		break;
> > +	}
> > +
> > +	/* Send packet header */
> > +	if (!first)
> > +		return;
> > +
> > +	reg = get_unaligned_le32(pkt->header);
> > +	if (samsung_dsim_wait_for_hdr_fifo(dsi)) {
> > +		dev_err(dev, "waiting for header FIFO timed out\n");
> > +		return;
> > +	}
> > +
> > +	if (NEQV(xfer->flags & MIPI_DSI_MSG_USE_LPM,
> > +		 dsi->state & DSIM_STATE_CMD_LPM)) {
> > +		samsung_dsim_set_cmd_lpm(dsi, xfer->flags & MIPI_DSI_MSG_USE_LPM);
> > +		dsi->state ^= DSIM_STATE_CMD_LPM;
> > +	}
> > +
> > +	samsung_dsim_write(dsi, DSIM_PKTHDR_REG, reg);
> > +
> > +	if (xfer->flags & MIPI_DSI_MSG_REQ_ACK)
> > +		samsung_dsim_force_bta(dsi);
> > +}
> > +
> > +static void samsung_dsim_read_from_fifo(struct samsung_dsim *dsi,
> > +					struct samsung_dsim_transfer *xfer)
> > +{
> > +	u8 *payload = xfer->rx_payload + xfer->rx_done;
> > +	bool first = !xfer->rx_done;
> > +	struct device *dev = dsi->dev;
> > +	u16 length;
> > +	u32 reg;
> > +
> > +	if (first) {
> > +		reg = samsung_dsim_read(dsi, DSIM_RXFIFO_REG);
> > +
> > +		switch (reg & 0x3f) {
> > +		case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE:
> > +		case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE:
> > +			if (xfer->rx_len >= 2) {
> > +				payload[1] = reg >> 16;
> > +				++xfer->rx_done;
> > +			}
> > +			fallthrough;
> > +		case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE:
> > +		case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE:
> > +			payload[0] = reg >> 8;
> > +			++xfer->rx_done;
> > +			xfer->rx_len = xfer->rx_done;
> > +			xfer->result = 0;
> > +			goto clear_fifo;
> > +		case MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT:
> > +			dev_err(dev, "DSI Error Report: 0x%04x\n",
> > +				(reg >> 8) & 0xffff);
> > +			xfer->result = 0;
> > +			goto clear_fifo;
> > +		}
> > +
> > +		length = (reg >> 8) & 0xffff;
> > +		if (length > xfer->rx_len) {
> > +			dev_err(dev,
> > +				"response too long (%u > %u bytes), stripping\n",
> > +				xfer->rx_len, length);
> > +			length = xfer->rx_len;
> > +		} else if (length < xfer->rx_len)
> > +			xfer->rx_len = length;
> > +	}
> > +
> > +	length = xfer->rx_len - xfer->rx_done;
> > +	xfer->rx_done += length;
> > +
> > +	/* Receive payload */
> > +	while (length >= 4) {
> > +		reg = samsung_dsim_read(dsi, DSIM_RXFIFO_REG);
> > +		payload[0] = (reg >>  0) & 0xff;
> > +		payload[1] = (reg >>  8) & 0xff;
> > +		payload[2] = (reg >> 16) & 0xff;
> > +		payload[3] = (reg >> 24) & 0xff;
> > +		payload += 4;
> > +		length -= 4;
> > +	}
> > +
> > +	if (length) {
> > +		reg = samsung_dsim_read(dsi, DSIM_RXFIFO_REG);
> > +		switch (length) {
> > +		case 3:
> > +			payload[2] = (reg >> 16) & 0xff;
> > +			fallthrough;
> > +		case 2:
> > +			payload[1] = (reg >> 8) & 0xff;
> > +			fallthrough;
> > +		case 1:
> > +			payload[0] = reg & 0xff;
> > +		}
> > +	}
> > +
> > +	if (xfer->rx_done == xfer->rx_len)
> > +		xfer->result = 0;
> > +
> > +clear_fifo:
> > +	length = DSI_RX_FIFO_SIZE / 4;
> > +	do {
> > +		reg = samsung_dsim_read(dsi, DSIM_RXFIFO_REG);
> > +		if (reg == DSI_RX_FIFO_EMPTY)
> > +			break;
> > +	} while (--length);
> > +}
> > +
> > +static void samsung_dsim_transfer_start(struct samsung_dsim *dsi)
> > +{
> > +	unsigned long flags;
> > +	struct samsung_dsim_transfer *xfer;
> > +	bool start = false;
> > +
> > +again:
> > +	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > +
> > +	if (list_empty(&dsi->transfer_list)) {
> > +		spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > +		return;
> > +	}
> > +
> > +	xfer = list_first_entry(&dsi->transfer_list,
> > +					struct samsung_dsim_transfer, list);
> > +
> > +	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > +
> > +	if (xfer->packet.payload_length &&
> > +	    xfer->tx_done == xfer->packet.payload_length)
> > +		/* waiting for RX */
> > +		return;
> > +
> > +	samsung_dsim_send_to_fifo(dsi, xfer);
> > +
> > +	if (xfer->packet.payload_length || xfer->rx_len)
> > +		return;
> > +
> > +	xfer->result = 0;
> > +	complete(&xfer->completed);
> > +
> > +	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > +
> > +	list_del_init(&xfer->list);
> > +	start = !list_empty(&dsi->transfer_list);
> > +
> > +	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > +
> > +	if (start)
> > +		goto again;
> > +}
> > +
> > +static bool samsung_dsim_transfer_finish(struct samsung_dsim *dsi)
> > +{
> > +	struct samsung_dsim_transfer *xfer;
> > +	unsigned long flags;
> > +	bool start = true;
> > +
> > +	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > +
> > +	if (list_empty(&dsi->transfer_list)) {
> > +		spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > +		return false;
> > +	}
> > +
> > +	xfer = list_first_entry(&dsi->transfer_list,
> > +					struct samsung_dsim_transfer, list);
> > +
> > +	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > +
> > +	dev_dbg(dsi->dev,
> > +		"> xfer %pK, tx_len %zu, tx_done %u, rx_len %u, rx_done %u\n",
> > +		xfer, xfer->packet.payload_length, xfer->tx_done, xfer->rx_len,
> > +		xfer->rx_done);
> > +
> > +	if (xfer->tx_done != xfer->packet.payload_length)
> > +		return true;
> > +
> > +	if (xfer->rx_done != xfer->rx_len)
> > +		samsung_dsim_read_from_fifo(dsi, xfer);
> > +
> > +	if (xfer->rx_done != xfer->rx_len)
> > +		return true;
> > +
> > +	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > +
> > +	list_del_init(&xfer->list);
> > +	start = !list_empty(&dsi->transfer_list);
> > +
> > +	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > +
> > +	if (!xfer->rx_len)
> > +		xfer->result = 0;
> > +	complete(&xfer->completed);
> > +
> > +	return start;
> > +}
> > +
> > +static void samsung_dsim_remove_transfer(struct samsung_dsim *dsi,
> > +					 struct samsung_dsim_transfer *xfer)
> > +{
> > +	unsigned long flags;
> > +	bool start;
> > +
> > +	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > +
> > +	if (!list_empty(&dsi->transfer_list) &&
> > +	    xfer == list_first_entry(&dsi->transfer_list,
> > +				     struct samsung_dsim_transfer, list)) {
> > +		list_del_init(&xfer->list);
> > +		start = !list_empty(&dsi->transfer_list);
> > +		spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > +		if (start)
> > +			samsung_dsim_transfer_start(dsi);
> > +		return;
> > +	}
> > +
> > +	list_del_init(&xfer->list);
> > +
> > +	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > +}
> > +
> > +static int samsung_dsim_transfer(struct samsung_dsim *dsi,
> > +				 struct samsung_dsim_transfer *xfer)
> > +{
> > +	unsigned long flags;
> > +	bool stopped;
> > +
> > +	xfer->tx_done = 0;
> > +	xfer->rx_done = 0;
> > +	xfer->result = -ETIMEDOUT;
> > +	init_completion(&xfer->completed);
> > +
> > +	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > +
> > +	stopped = list_empty(&dsi->transfer_list);
> > +	list_add_tail(&xfer->list, &dsi->transfer_list);
> > +
> > +	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > +
> > +	if (stopped)
> > +		samsung_dsim_transfer_start(dsi);
> > +
> > +	wait_for_completion_timeout(&xfer->completed,
> > +				    msecs_to_jiffies(DSI_XFER_TIMEOUT_MS));
> > +	if (xfer->result == -ETIMEDOUT) {
> > +		struct mipi_dsi_packet *pkt = &xfer->packet;
> > +		samsung_dsim_remove_transfer(dsi, xfer);
> > +		dev_err(dsi->dev, "xfer timed out: %*ph %*ph\n", 4, pkt->header,
> > +			(int)pkt->payload_length, pkt->payload);
> > +		return -ETIMEDOUT;
> > +	}
> > +
> > +	/* Also covers hardware timeout condition */
> > +	return xfer->result;
> > +}
> > +
> > +static irqreturn_t samsung_dsim_irq(int irq, void *dev_id)
> > +{
> > +	struct samsung_dsim *dsi = dev_id;
> > +	u32 status;
> > +
> > +	status = samsung_dsim_read(dsi, DSIM_INTSRC_REG);
> > +	if (!status) {
> > +		static unsigned long int j;
> > +		if (printk_timed_ratelimit(&j, 500))
> > +			dev_warn(dsi->dev, "spurious interrupt\n");
> > +		return IRQ_HANDLED;
> > +	}
> > +	samsung_dsim_write(dsi, DSIM_INTSRC_REG, status);
> > +
> > +	if (status & DSIM_INT_SW_RST_RELEASE) {
> > +		u32 mask = ~(DSIM_INT_RX_DONE | DSIM_INT_SFR_FIFO_EMPTY |
> > +			DSIM_INT_SFR_HDR_FIFO_EMPTY | DSIM_INT_RX_ECC_ERR |
> > +			DSIM_INT_SW_RST_RELEASE);
> > +		samsung_dsim_write(dsi, DSIM_INTMSK_REG, mask);
> > +		complete(&dsi->completed);
> > +		return IRQ_HANDLED;
> > +	}
> > +
> > +	if (!(status & (DSIM_INT_RX_DONE | DSIM_INT_SFR_FIFO_EMPTY |
> > +			DSIM_INT_PLL_STABLE)))
> > +		return IRQ_HANDLED;
> > +
> > +	if (samsung_dsim_transfer_finish(dsi))
> > +		samsung_dsim_transfer_start(dsi);
> > +
> > +	return IRQ_HANDLED;
> > +}
> > +
> > +static irqreturn_t samsung_dsim_te_irq_handler(int irq, void *dev_id)
> > +{
> > +	struct samsung_dsim *dsi = dev_id;
> > +	const struct samsung_dsim_host_ops *ops = dsi->driver_data->host_ops;
> > +
> > +	if (ops && ops->te_handler &&
> > +	    (dsi->state & DSIM_STATE_VIDOUT_AVAILABLE))
> > +		ops->te_handler(dsi->dsi_host.dev);
> > +
> > +	return IRQ_HANDLED;
> > +}
> > +
> > +static void samsung_dsim_enable_irq(struct samsung_dsim *dsi)
> > +{
> > +	enable_irq(dsi->irq);
> > +
> > +	if (gpio_is_valid(dsi->te_gpio))
> > +		enable_irq(gpio_to_irq(dsi->te_gpio));
> > +}
> > +
> > +static void samsung_dsim_disable_irq(struct samsung_dsim *dsi)
> > +{
> > +	if (gpio_is_valid(dsi->te_gpio))
> > +		disable_irq(gpio_to_irq(dsi->te_gpio));
> > +
> > +	disable_irq(dsi->irq);
> > +}
> > +
> > +static int samsung_dsim_init(struct samsung_dsim *dsi)
> > +{
> > +	const struct samsung_dsim_driver_data *driver_data = dsi->driver_data;
> > +
> > +	samsung_dsim_reset(dsi);
> > +	samsung_dsim_enable_irq(dsi);
> > +
> > +	if (driver_data->reg_values[RESET_TYPE] == DSIM_FUNCRST)
> > +		samsung_dsim_enable_lane(dsi, BIT(dsi->lanes) - 1);
> > +
> > +	samsung_dsim_enable_clock(dsi);
> > +	if (driver_data->wait_for_reset)
> > +		samsung_dsim_wait_for_reset(dsi);
> > +	samsung_dsim_set_phy_ctrl(dsi);
> > +	samsung_dsim_init_link(dsi);
> > +
> > +	return 0;
> > +}
> > +
> > +static int samsung_dsim_register_te_irq(struct samsung_dsim *dsi,
> > +					struct device *panel)
> > +{
> > +	int ret;
> > +	int te_gpio_irq;
> > +
> > +	dsi->te_gpio = of_get_named_gpio(panel->of_node, "te-gpios", 0);
> > +	if (dsi->te_gpio == -ENOENT)
> > +		return 0;
> > +
> > +	if (!gpio_is_valid(dsi->te_gpio)) {
> > +		ret = dsi->te_gpio;
> > +		dev_err(dsi->dev, "cannot get te-gpios, %d\n", ret);
> > +		goto out;
> > +	}
> > +
> > +	ret = gpio_request(dsi->te_gpio, "te_gpio");
> > +	if (ret) {
> > +		dev_err(dsi->dev, "gpio request failed with %d\n", ret);
> > +		goto out;
> > +	}
> > +
> > +	te_gpio_irq = gpio_to_irq(dsi->te_gpio);
> > +	irq_set_status_flags(te_gpio_irq, IRQ_NOAUTOEN);
> > +
> > +	ret = request_threaded_irq(te_gpio_irq, samsung_dsim_te_irq_handler,
> > +				   NULL, IRQF_TRIGGER_RISING, "TE", dsi);
> > +	if (ret) {
> > +		dev_err(dsi->dev, "request interrupt failed with %d\n", ret);
> > +		gpio_free(dsi->te_gpio);
> > +		goto out;
> > +	}
> > +
> > +out:
> > +	return ret;
> > +}
> > +
> > +static void samsung_dsim_unregister_te_irq(struct samsung_dsim *dsi)
> > +{
> > +	if (gpio_is_valid(dsi->te_gpio)) {
> > +		free_irq(gpio_to_irq(dsi->te_gpio), dsi);
> > +		gpio_free(dsi->te_gpio);
> > +		dsi->te_gpio = -ENOENT;
> > +	}
> > +}
> > +
> > +static void samsung_dsim_enable(struct samsung_dsim *dsi)
> > +{
> > +	struct drm_bridge *iter;
> > +	int ret;
> > +
> > +	if (dsi->state & DSIM_STATE_ENABLED)
> > +		return;
> > +
> > +	pm_runtime_get_sync(dsi->dev);
> > +	dsi->state |= DSIM_STATE_ENABLED;
> > +
> > +	if (dsi->panel) {
> > +		ret = drm_panel_prepare(dsi->panel);
> > +		if (ret < 0)
> > +			goto err_put_sync;
> > +	} else {
> > +		list_for_each_entry_reverse(iter, &dsi->bridge_chain,
> > +					    chain_node) {
> > +			if (iter->funcs->pre_enable)
> > +				iter->funcs->pre_enable(iter);
> > +		}
> > +	}
> > +
> > +	samsung_dsim_set_display_mode(dsi);
> > +	samsung_dsim_set_display_enable(dsi, true);
> > +
> > +	if (dsi->panel) {
> > +		ret = drm_panel_enable(dsi->panel);
> > +		if (ret < 0)
> > +			goto err_display_disable;
> > +	} else {
> > +		list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {
> > +			if (iter->funcs->enable)
> > +				iter->funcs->enable(iter);
> > +		}
> > +	}
> > +
> > +	dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE;
> > +	return;
> > +
> > +err_display_disable:
> > +	samsung_dsim_set_display_enable(dsi, false);
> > +	drm_panel_unprepare(dsi->panel);
> > +
> > +err_put_sync:
> > +	dsi->state &= ~DSIM_STATE_ENABLED;
> > +	pm_runtime_put(dsi->dev);
> > +}
> > +
> > +static void samsung_dsim_disable(struct samsung_dsim *dsi)
> > +{
> > +	struct drm_bridge *iter;
> > +
> > +	if (!(dsi->state & DSIM_STATE_ENABLED))
> > +		return;
> > +
> > +	dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE;
> > +
> > +	drm_panel_disable(dsi->panel);
> > +
> > +	list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) {
> > +		if (iter->funcs->disable)
> > +			iter->funcs->disable(iter);
> > +	}
> > +
> > +	samsung_dsim_set_display_enable(dsi, false);
> > +	drm_panel_unprepare(dsi->panel);
> > +
> > +	list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {
> > +		if (iter->funcs->post_disable)
> > +			iter->funcs->post_disable(iter);
> > +	}
> > +
> > +	dsi->state &= ~DSIM_STATE_ENABLED;
> > +	pm_runtime_put_sync(dsi->dev);
> > +}
> > +
> > +static enum drm_connector_status
> > +samsung_dsim_detect(struct drm_connector *connector, bool force)
> > +{
> > +	return connector->status;
> > +}
> > +
> > +static void samsung_dsim_connector_destroy(struct drm_connector *connector)
> > +{
> > +	drm_connector_unregister(connector);
> > +	drm_connector_cleanup(connector);
> > +	connector->dev = NULL;
> > +}
> > +
> > +static const struct drm_connector_funcs samsung_dsim_connector_funcs = {
> > +	.detect = samsung_dsim_detect,
> > +	.fill_modes = drm_helper_probe_single_connector_modes,
> > +	.destroy = samsung_dsim_connector_destroy,
> > +	.reset = drm_atomic_helper_connector_reset,
> > +	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> > +	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> > +};
> > +
> > +static int samsung_dsim_get_modes(struct drm_connector *connector)
> > +{
> > +	struct samsung_dsim *dsi = connector_to_dsi(connector);
> > +
> > +	if (dsi->panel)
> > +		return drm_panel_get_modes(dsi->panel, connector);
> > +
> > +	return 0;
> > +}
> > +
> > +static const struct drm_connector_helper_funcs samsung_dsim_connector_helper_funcs = {
> > +	.get_modes = samsung_dsim_get_modes,
> > +};
> > +
> > +static int samsung_dsim_create_connector(struct samsung_dsim *dsi)
> > +{
> > +	struct drm_connector *connector = &dsi->connector;
> > +	struct drm_device *drm = dsi->bridge.dev;
> > +	int ret;
> > +
> > +	connector->polled = DRM_CONNECTOR_POLL_HPD;
> > +
> > +	ret = drm_connector_init(drm, connector, &samsung_dsim_connector_funcs,
> > +				 DRM_MODE_CONNECTOR_DSI);
> > +	if (ret) {
> > +		DRM_DEV_ERROR(dsi->dev,
> > +			      "Failed to initialize connector with drm\n");
> > +		return ret;
> > +	}
> > +
> > +	connector->status = connector_status_disconnected;
> > +	drm_connector_helper_add(connector, &samsung_dsim_connector_helper_funcs);
> > +	drm_connector_attach_encoder(connector, dsi->bridge.encoder);
> > +	if (!drm->registered)
> > +		return 0;
> > +
> > +	connector->funcs->reset(connector);
> > +	drm_connector_register(connector);
> > +	return 0;
> > +}
> > +
> > +static int samsung_dsim_bridge_attach(struct drm_bridge *bridge,
> > +				      enum drm_bridge_attach_flags flags)
> > +{
> > +	struct samsung_dsim *dsi = bridge->driver_private;
> > +	struct drm_encoder *encoder = bridge->encoder;
> > +	int ret;
> > +
> > +	if (!dsi->out_bridge && !dsi->panel)
> > +		return -EPROBE_DEFER;
> > +
> > +	if (dsi->out_bridge) {
> > +		ret = drm_bridge_attach(encoder, dsi->out_bridge,
> > +					bridge, flags);
> > +		if (ret)
> > +			return ret;
> > +		list_splice_init(&encoder->bridge_chain, &dsi->bridge_chain);
> > +	} else {
> > +		ret = samsung_dsim_create_connector(dsi);
> > +		if (ret)
> > +			return ret;
> > +
> > +		if (dsi->panel) {
> > +			dsi->connector.status = connector_status_connected;
> > +		}
> > +	}
> > +
> > +	return 0;
> > +}
> > +
> > +static void samsung_dsim_bridge_detach(struct drm_bridge *bridge)
> > +{
> > +	struct samsung_dsim *dsi = bridge->driver_private;
> > +	struct drm_encoder *encoder = bridge->encoder;
> > +	struct drm_device *drm = encoder->dev;
> > +
> > +	if (dsi->panel) {
> > +		mutex_lock(&drm->mode_config.mutex);
> > +		samsung_dsim_disable(dsi);
> > +		dsi->panel = NULL;
> > +		dsi->connector.status = connector_status_disconnected;
> > +		mutex_unlock(&drm->mode_config.mutex);
> > +	} else {
> > +		if (dsi->out_bridge->funcs->detach)
> > +			dsi->out_bridge->funcs->detach(dsi->out_bridge);
> > +		dsi->out_bridge = NULL;
> > +		INIT_LIST_HEAD(&dsi->bridge_chain);
> > +	}
> > +}
> > +
> > +static void samsung_dsim_bridge_enable(struct drm_bridge *bridge)
> > +{
> > +	struct samsung_dsim *dsi = bridge->driver_private;
> > +
> > +	samsung_dsim_enable(dsi);
> > +}
> > +
> > +static void samsung_dsim_bridge_disable(struct drm_bridge *bridge)
> > +{
> > +	struct samsung_dsim *dsi = bridge->driver_private;
> > +
> > +	samsung_dsim_disable(dsi);
> > +}
> > +
> > +static void samsung_dsim_bridge_mode_set(struct drm_bridge *bridge,
> > +					 const struct drm_display_mode *mode,
> > +					 const struct drm_display_mode *adjusted_mode)
> > +{
> > +	struct samsung_dsim *dsi = bridge->driver_private;
> > +
> > +	/* The mode is set when actually enabling the device. */
> > +	drm_mode_copy(&dsi->mode, adjusted_mode);
> > +}
> > +
> > +static const struct drm_bridge_funcs samsung_dsim_bridge_funcs = {
> > +	.attach = samsung_dsim_bridge_attach,
> > +	.detach = samsung_dsim_bridge_detach,
> > +	.enable = samsung_dsim_bridge_enable,
> > +	.disable = samsung_dsim_bridge_disable,
> > +	.mode_set = samsung_dsim_bridge_mode_set,
> > +};
> > +
> > +static int samsung_dsim_host_attach(struct mipi_dsi_host *host,
> > +				    struct mipi_dsi_device *device)
> > +{
> > +	struct samsung_dsim *dsi = host_to_dsi(host);
> > +	const struct samsung_dsim_host_ops *ops = dsi->driver_data->host_ops;
> > +	struct drm_bridge *out_bridge;
> > +
> > +	out_bridge = of_drm_find_bridge(device->dev.of_node);
> > +	if (out_bridge) {
> > +		dsi->out_bridge = out_bridge;
> > +	} else {
> > +		dsi->panel = of_drm_find_panel(device->dev.of_node);
> > +		if (IS_ERR(dsi->panel))
> > +			dsi->panel = NULL;
> > +		else
> > +			dsi->connector.status = connector_status_connected;
> > +	}
> > +
> > +	/*
> > +	 * This is a temporary solution and should be made by more generic way.
> > +	 *
> > +	 * If attached panel device is for command mode one, dsi should register
> > +	 * TE interrupt handler.
> > +	 */
> > +	if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO)) {
> > +		int ret = samsung_dsim_register_te_irq(dsi, &device->dev);
> > +		if (ret)
> > +			return ret;
> > +	}
> > +
> > +	dsi->lanes = device->lanes;
> > +	dsi->format = device->format;
> > +	dsi->mode_flags = device->mode_flags;
> > +
> > +	if (ops && ops->attach)
> > +		ops->attach(dsi->dsi_host.dev, device);
> > +
> > +	return 0;
> > +}
> > +
> > +static int samsung_dsim_host_detach(struct mipi_dsi_host *host,
> > +				    struct mipi_dsi_device *device)
> > +{
> > +	struct samsung_dsim *dsi = host_to_dsi(host);
> > +	const struct samsung_dsim_host_ops *ops = dsi->driver_data->host_ops;
> > +
> > +	samsung_dsim_unregister_te_irq(dsi);
> > +
> > +	if (ops && ops->detach)
> > +		ops->detach(dsi->dsi_host.dev, device);
> > +
> > +	samsung_dsim_unregister_te_irq(dsi);
> > +
> > +	return 0;
> > +}
> > +
> > +static ssize_t samsung_dsim_host_transfer(struct mipi_dsi_host *host,
> > +					  const struct mipi_dsi_msg *msg)
> > +{
> > +	struct samsung_dsim *dsi = host_to_dsi(host);
> > +	struct samsung_dsim_transfer xfer;
> > +	int ret;
> > +
> > +	if (!(dsi->state & DSIM_STATE_ENABLED))
> > +		return -EINVAL;
> > +
> > +	if (!(dsi->state & DSIM_STATE_INITIALIZED)) {
> > +		ret = samsung_dsim_init(dsi);
> > +		if (ret)
> > +			return ret;
> > +		dsi->state |= DSIM_STATE_INITIALIZED;
> > +	}
> > +
> > +	ret = mipi_dsi_create_packet(&xfer.packet, msg);
> > +	if (ret < 0)
> > +		return ret;
> > +
> > +	xfer.rx_len = msg->rx_len;
> > +	xfer.rx_payload = msg->rx_buf;
> > +	xfer.flags = msg->flags;
> > +
> > +	ret = samsung_dsim_transfer(dsi, &xfer);
> > +	return (ret < 0) ? ret : xfer.rx_done;
> > +}
> > +
> > +static const struct mipi_dsi_host_ops samsung_dsim_ops = {
> > +	.attach = samsung_dsim_host_attach,
> > +	.detach = samsung_dsim_host_detach,
> > +	.transfer = samsung_dsim_host_transfer,
> > +};
> > +
> > +static int samsung_dsim_of_read_u32(const struct device_node *np,
> > +				    const char *propname, u32 *out_value)
> > +{
> > +	int ret = of_property_read_u32(np, propname, out_value);
> > +
> > +	if (ret < 0)
> > +		pr_err("%pOF: failed to get '%s' property\n", np, propname);
> > +
> > +	return ret;
> > +}
> > +
> > +static int samsung_dsim_parse_dt(struct samsung_dsim *dsi)
> > +{
> > +	struct device *dev = dsi->dev;
> > +	struct device_node *node = dev->of_node;
> > +	int ret;
> > +
> > +	ret = samsung_dsim_of_read_u32(node, "samsung,pll-clock-frequency",
> > +				       &dsi->pll_clk_rate);
> > +	if (ret < 0)
> > +		return ret;
> > +
> > +	ret = samsung_dsim_of_read_u32(node, "samsung,burst-clock-frequency",
> > +				       &dsi->burst_clk_rate);
> > +	if (ret < 0)
> > +		return ret;
> > +
> > +	ret = samsung_dsim_of_read_u32(node, "samsung,esc-clock-frequency",
> > +				       &dsi->esc_clk_rate);
> > +	if (ret < 0)
> > +		return ret;
> > +
> > +	return 0;
> > +}
> > +
> > +static struct samsung_dsim *__samsung_dsim_probe(struct platform_device *pdev)
> > +{
> > +	struct device *dev = &pdev->dev;
> > +	struct drm_bridge *bridge;
> > +	struct resource *res;
> > +	struct samsung_dsim *dsi;
> > +	int ret, i;
> > +
> > +	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
> > +	if (!dsi)
> > +		return ERR_PTR(-ENOMEM);
> > +
> > +	/* To be checked as invalid one */
> > +	dsi->te_gpio = -ENOENT;
> > +
> > +	init_completion(&dsi->completed);
> > +	spin_lock_init(&dsi->transfer_lock);
> > +	INIT_LIST_HEAD(&dsi->transfer_list);
> > +	INIT_LIST_HEAD(&dsi->bridge_chain);
> > +
> > +	dsi->dsi_host.ops = &samsung_dsim_ops;
> > +	dsi->dsi_host.dev = dev;
> > +
> > +	dsi->dev = dev;
> > +	dsi->driver_data = of_device_get_match_data(dev);
> > +
> > +	dsi->supplies[0].supply = "vddcore";
> > +	dsi->supplies[1].supply = "vddio";
> > +	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(dsi->supplies),
> > +				      dsi->supplies);
> > +	if (ret) {
> > +		if (ret != -EPROBE_DEFER)
> > +			dev_info(dev, "failed to get regulators: %d\n", ret);
> > +		return ERR_PTR(ret);
> > +	}
> > +
> > +	dsi->clks = devm_kcalloc(dev,
> > +			dsi->driver_data->num_clks, sizeof(*dsi->clks),
> > +			GFP_KERNEL);
> > +	if (!dsi->clks)
> > +		return ERR_PTR(-ENOMEM);
> > +
> > +	for (i = 0; i < dsi->driver_data->num_clks; i++) {
> > +		dsi->clks[i] = devm_clk_get(dev, clk_names[i]);
> > +		if (IS_ERR(dsi->clks[i])) {
> > +			if (strcmp(clk_names[i], "sclk_mipi") == 0) {
> > +				dsi->clks[i] = devm_clk_get(dev,
> > +							OLD_SCLK_MIPI_CLK_NAME);
> > +				if (!IS_ERR(dsi->clks[i]))
> > +					continue;
> > +			}
> > +
> > +			dev_info(dev, "failed to get the clock: %s\n",
> > +					clk_names[i]);
> > +			return ERR_PTR(PTR_ERR(dsi->clks[i]));
> > +		}
> > +	}
> > +
> > +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > +	dsi->reg_base = devm_ioremap_resource(dev, res);
> > +	if (IS_ERR(dsi->reg_base)) {
> > +		dev_err(dev, "failed to remap io region\n");
> > +		return dsi->reg_base;
> > +	}
> > +
> > +	dsi->phy = devm_phy_get(dev, "dsim");
> > +	if (IS_ERR(dsi->phy)) {
> > +		dev_info(dev, "failed to get dsim phy\n");
> > +		return ERR_PTR(PTR_ERR(dsi->phy));
> > +	}
> > +
> > +	dsi->irq = platform_get_irq(pdev, 0);
> > +	if (dsi->irq < 0)
> > +		return ERR_PTR(dsi->irq);
> > +
> > +	irq_set_status_flags(dsi->irq, IRQ_NOAUTOEN);
> > +	ret = devm_request_threaded_irq(dev, dsi->irq, NULL,
> > +					samsung_dsim_irq, IRQF_ONESHOT,
> > +					dev_name(dev), dsi);
> > +	if (ret) {
> > +		dev_err(dev, "failed to request dsi irq\n");
> > +		return ERR_PTR(ret);
> > +	}
> > +
> > +	ret = samsung_dsim_parse_dt(dsi);
> > +	if (ret)
> > +		return ERR_PTR(ret);
> > +
> > +	ret = mipi_dsi_host_register(&dsi->dsi_host);
> > +	if (ret)
> > +		return ERR_PTR(ret);
> > +
> > +	bridge = &dsi->bridge;
> > +	bridge->driver_private = dsi;
> > +	bridge->funcs = &samsung_dsim_bridge_funcs;
> > +	bridge->of_node = dev->of_node;
> > +	drm_bridge_add(bridge);
> > +
> > +	return dsi;
> > +}
> > +
> > +static void __samsung_dsim_remove(struct samsung_dsim *dsi)
> > +{
> > +	drm_bridge_remove(&dsi->bridge);
> > +
> > +	mipi_dsi_host_unregister(&dsi->dsi_host);
> > +}
> > +
> > +/*
> > + * Probe/remove API, used from platforms based on the DRM bridge API.
> > + */
> > +struct samsung_dsim *samsung_dsim_probe(struct platform_device *pdev)
> > +{
> > +	return __samsung_dsim_probe(pdev);
> > +}
> > +EXPORT_SYMBOL_GPL(samsung_dsim_probe);
> > +
> > +void samsung_dsim_remove(struct samsung_dsim *dsi)
> > +{
> > +	return __samsung_dsim_remove(dsi);
> > +}
> > +EXPORT_SYMBOL_GPL(samsung_dsim_remove);
> > +
> > +/*
> > + * Bind/unbind API, used from platforms based on the component framework.
> > + */
> > +int samsung_dsim_bind(struct samsung_dsim *dsi, struct drm_encoder *encoder)
> > +{
> > +	struct drm_bridge *previous = drm_bridge_chain_get_first_bridge(encoder);
> > +
> > +	return drm_bridge_attach(encoder, &dsi->bridge, previous, 0);
> > +}
> > +EXPORT_SYMBOL_GPL(samsung_dsim_bind);
> > +
> > +void samsung_dsim_unbind(struct samsung_dsim *dsi)
> > +{
> > +	samsung_dsim_disable(dsi);
> > +}
> > +EXPORT_SYMBOL_GPL(samsung_dsim_unbind);
> > +
> > +int samsung_dsim_suspend(struct samsung_dsim *dsi)
> > +{
> > +	const struct samsung_dsim_driver_data *driver_data = dsi->driver_data;
> > +	int ret, i;
> > +
> > +	usleep_range(10000, 20000);
> > +
> > +	if (dsi->state & DSIM_STATE_INITIALIZED) {
> > +		dsi->state &= ~DSIM_STATE_INITIALIZED;
> > +
> > +		samsung_dsim_disable_clock(dsi);
> > +
> > +		samsung_dsim_disable_irq(dsi);
> > +	}
> > +
> > +	dsi->state &= ~DSIM_STATE_CMD_LPM;
> > +
> > +	phy_power_off(dsi->phy);
> > +
> > +	for (i = driver_data->num_clks - 1; i > -1; i--)
> > +		clk_disable_unprepare(dsi->clks[i]);
> > +
> > +	ret = regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies);
> > +	if (ret < 0)
> > +		dev_err(dsi->dev, "cannot disable regulators %d\n", ret);
> > +
> > +	return 0;
> > +}
> > +EXPORT_SYMBOL_GPL(samsung_dsim_suspend);
> > +
> > +int samsung_dsim_resume(struct samsung_dsim *dsi)
> > +{
> > +	const struct samsung_dsim_driver_data *driver_data = dsi->driver_data;
> > +	int ret, i;
> > +
> > +	ret = regulator_bulk_enable(ARRAY_SIZE(dsi->supplies), dsi->supplies);
> > +	if (ret < 0) {
> > +		dev_err(dsi->dev, "cannot enable regulators %d\n", ret);
> > +		return ret;
> > +	}
> > +
> > +	for (i = 0; i < driver_data->num_clks; i++) {
> > +		ret = clk_prepare_enable(dsi->clks[i]);
> > +		if (ret < 0)
> > +			goto err_clk;
> > +	}
> > +
> > +	ret = phy_power_on(dsi->phy);
> > +	if (ret < 0) {
> > +		dev_err(dsi->dev, "cannot enable phy %d\n", ret);
> > +		goto err_clk;
> > +	}
> > +
> > +	return 0;
> > +
> > +err_clk:
> > +	while (--i > -1)
> > +		clk_disable_unprepare(dsi->clks[i]);
> > +	regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies);
> > +
> > +	return ret;
> > +}
> > +EXPORT_SYMBOL_GPL(samsung_dsim_resume);
> > +
> > +MODULE_AUTHOR("Tomasz Figa <t.figa@xxxxxxxxxxx>");
> > +MODULE_AUTHOR("Andrzej Hajda <a.hajda@xxxxxxxxxxx>");
> > +MODULE_DESCRIPTION("Samsung SoC MIPI DSI Master");
> > +MODULE_LICENSE("GPL v2");
> > diff --git a/drivers/gpu/drm/exynos/Kconfig b/drivers/gpu/drm/exynos/Kconfig
> > index 6417f374b923..3bc321ab5bc8 100644
> > --- a/drivers/gpu/drm/exynos/Kconfig
> > +++ b/drivers/gpu/drm/exynos/Kconfig
> > @@ -16,7 +16,6 @@ comment "CRTCs"
> >  
> >  config DRM_EXYNOS_FIMD
> >  	bool "FIMD"
> > -	depends on !FB_S3C
> >  	select MFD_SYSCON
> >  	help
> >  	  Choose this option if you want to use Exynos FIMD for DRM.
> > @@ -28,7 +27,6 @@ config DRM_EXYNOS5433_DECON
> >  
> >  config DRM_EXYNOS7_DECON
> >  	bool "DECON on Exynos7"
> > -	depends on !FB_S3C
> >  	help
> >  	  Choose this option if you want to use Exynos DECON for DRM.
> >  
> > @@ -55,8 +53,7 @@ config DRM_EXYNOS_DPI
> >  config DRM_EXYNOS_DSI
> >  	bool "MIPI-DSI host"
> >  	depends on DRM_EXYNOS_FIMD || DRM_EXYNOS5433_DECON || DRM_EXYNOS7_DECON
> > -	select DRM_MIPI_DSI
> > -	select DRM_PANEL
> > +	select DRM_SAMSUNG_DSIM
> >  	default n
> >  	help
> >  	  This enables support for Exynos MIPI-DSI device.
> > diff --git a/drivers/gpu/drm/exynos/Makefile b/drivers/gpu/drm/exynos/Makefile
> > index add70b336935..2fd2f3ee4fcf 100644
> > --- a/drivers/gpu/drm/exynos/Makefile
> > +++ b/drivers/gpu/drm/exynos/Makefile
> > @@ -11,7 +11,7 @@ exynosdrm-$(CONFIG_DRM_EXYNOS_FIMD)	+= exynos_drm_fimd.o
> >  exynosdrm-$(CONFIG_DRM_EXYNOS5433_DECON)	+= exynos5433_drm_decon.o
> >  exynosdrm-$(CONFIG_DRM_EXYNOS7_DECON)	+= exynos7_drm_decon.o
> >  exynosdrm-$(CONFIG_DRM_EXYNOS_DPI)	+= exynos_drm_dpi.o
> > -exynosdrm-$(CONFIG_DRM_EXYNOS_DSI)	+= exynos_drm_dsi.o exynos_drm_dsi_pltfm.o
> > +exynosdrm-$(CONFIG_DRM_EXYNOS_DSI)	+= exynos_drm_dsi.o
> >  exynosdrm-$(CONFIG_DRM_EXYNOS_DP)	+= exynos_dp.o
> >  exynosdrm-$(CONFIG_DRM_EXYNOS_MIXER)	+= exynos_mixer.o
> >  exynosdrm-$(CONFIG_DRM_EXYNOS_HDMI)	+= exynos_hdmi.o
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> > index e8aea9d90c34..17f37fa74718 100644
> > --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> > +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
> > @@ -5,1774 +5,328 @@
> >   * Copyright (c) 2014 Samsung Electronics Co., Ltd
> >   *
> >   * Contacts: Tomasz Figa <t.figa@xxxxxxxxxxx>
> > -*/
> > + */
> >  
> > -#include <linux/clk.h>
> > -#include <linux/delay.h>
> >  #include <linux/component.h>
> > -#include <linux/gpio/consumer.h>
> > -#include <linux/irq.h>
> >  #include <linux/of_device.h>
> > -#include <linux/of_gpio.h>
> >  #include <linux/of_graph.h>
> > -#include <linux/phy/phy.h>
> > -#include <linux/regulator/consumer.h>
> > -
> > -#include <asm/unaligned.h>
> > +#include <linux/pm_runtime.h>
> >  
> > -#include <video/mipi_display.h>
> > -#include <video/videomode.h>
> > -
> > -#include <drm/drm_atomic_helper.h>
> > +#include <drm/bridge/samsung-dsim.h>
> >  #include <drm/drm_bridge.h>
> > -#include <drm/drm_fb_helper.h>
> > +#include <drm/drm_encoder.h>
> >  #include <drm/drm_mipi_dsi.h>
> > -#include <drm/drm_panel.h>
> > -#include <drm/drm_print.h>
> >  #include <drm/drm_probe_helper.h>
> >  #include <drm/drm_simple_kms_helper.h>
> >  
> > -#include "exynos_drm_dsi.h"
> > -
> > -/* returns true iff both arguments logically differs */
> > -#define NEQV(a, b) (!(a) ^ !(b))
> > -
> > -/* DSIM_STATUS */
> > -#define DSIM_STOP_STATE_DAT(x)		(((x) & 0xf) << 0)
> > -#define DSIM_STOP_STATE_CLK		(1 << 8)
> > -#define DSIM_TX_READY_HS_CLK		(1 << 10)
> > -#define DSIM_PLL_STABLE			(1 << 31)
> > -
> > -/* DSIM_TIMEOUT */
> > -#define DSIM_LPDR_TIMEOUT(x)		((x) << 0)
> > -#define DSIM_BTA_TIMEOUT(x)		((x) << 16)
> > -
> > -/* DSIM_CLKCTRL */
> > -#define DSIM_ESC_PRESCALER(x)		(((x) & 0xffff) << 0)
> > -#define DSIM_ESC_PRESCALER_MASK		(0xffff << 0)
> > -#define DSIM_LANE_ESC_CLK_EN_CLK	(1 << 19)
> > -#define DSIM_LANE_ESC_CLK_EN_DATA(x)	(((x) & 0xf) << 20)
> > -#define DSIM_LANE_ESC_CLK_EN_DATA_MASK	(0xf << 20)
> > -#define DSIM_BYTE_CLKEN			(1 << 24)
> > -#define DSIM_BYTE_CLK_SRC(x)		(((x) & 0x3) << 25)
> > -#define DSIM_BYTE_CLK_SRC_MASK		(0x3 << 25)
> > -#define DSIM_PLL_BYPASS			(1 << 27)
> > -#define DSIM_ESC_CLKEN			(1 << 28)
> > -#define DSIM_TX_REQUEST_HSCLK		(1 << 31)
> > -
> > -/* DSIM_CONFIG */
> > -#define DSIM_LANE_EN_CLK		(1 << 0)
> > -#define DSIM_LANE_EN(x)			(((x) & 0xf) << 1)
> > -#define DSIM_NUM_OF_DATA_LANE(x)	(((x) & 0x3) << 5)
> > -#define DSIM_SUB_PIX_FORMAT(x)		(((x) & 0x7) << 8)
> > -#define DSIM_MAIN_PIX_FORMAT_MASK	(0x7 << 12)
> > -#define DSIM_MAIN_PIX_FORMAT_RGB888	(0x7 << 12)
> > -#define DSIM_MAIN_PIX_FORMAT_RGB666	(0x6 << 12)
> > -#define DSIM_MAIN_PIX_FORMAT_RGB666_P	(0x5 << 12)
> > -#define DSIM_MAIN_PIX_FORMAT_RGB565	(0x4 << 12)
> > -#define DSIM_SUB_VC			(((x) & 0x3) << 16)
> > -#define DSIM_MAIN_VC			(((x) & 0x3) << 18)
> > -#define DSIM_HSA_MODE			(1 << 20)
> > -#define DSIM_HBP_MODE			(1 << 21)
> > -#define DSIM_HFP_MODE			(1 << 22)
> > -#define DSIM_HSE_MODE			(1 << 23)
> > -#define DSIM_AUTO_MODE			(1 << 24)
> > -#define DSIM_VIDEO_MODE			(1 << 25)
> > -#define DSIM_BURST_MODE			(1 << 26)
> > -#define DSIM_SYNC_INFORM		(1 << 27)
> > -#define DSIM_EOT_DISABLE		(1 << 28)
> > -#define DSIM_MFLUSH_VS			(1 << 29)
> > -/* This flag is valid only for exynos3250/3472/5260/5430 */
> > -#define DSIM_CLKLANE_STOP		(1 << 30)
> > -
> > -/* DSIM_ESCMODE */
> > -#define DSIM_TX_TRIGGER_RST		(1 << 4)
> > -#define DSIM_TX_LPDT_LP			(1 << 6)
> > -#define DSIM_CMD_LPDT_LP		(1 << 7)
> > -#define DSIM_FORCE_BTA			(1 << 16)
> > -#define DSIM_FORCE_STOP_STATE		(1 << 20)
> > -#define DSIM_STOP_STATE_CNT(x)		(((x) & 0x7ff) << 21)
> > -#define DSIM_STOP_STATE_CNT_MASK	(0x7ff << 21)
> > -
> > -/* DSIM_MDRESOL */
> > -#define DSIM_MAIN_STAND_BY		(1 << 31)
> > -#define DSIM_MAIN_VRESOL(x, num_bits)	(((x) & ((1 << (num_bits)) - 1)) << 16)
> > -#define DSIM_MAIN_HRESOL(x, num_bits)	(((x) & ((1 << (num_bits)) - 1)) << 0)
> > -
> > -/* DSIM_MVPORCH */
> > -#define DSIM_CMD_ALLOW(x)		((x) << 28)
> > -#define DSIM_STABLE_VFP(x)		((x) << 16)
> > -#define DSIM_MAIN_VBP(x)		((x) << 0)
> > -#define DSIM_CMD_ALLOW_MASK		(0xf << 28)
> > -#define DSIM_STABLE_VFP_MASK		(0x7ff << 16)
> > -#define DSIM_MAIN_VBP_MASK		(0x7ff << 0)
> > -
> > -/* DSIM_MHPORCH */
> > -#define DSIM_MAIN_HFP(x)		((x) << 16)
> > -#define DSIM_MAIN_HBP(x)		((x) << 0)
> > -#define DSIM_MAIN_HFP_MASK		((0xffff) << 16)
> > -#define DSIM_MAIN_HBP_MASK		((0xffff) << 0)
> > -
> > -/* DSIM_MSYNC */
> > -#define DSIM_MAIN_VSA(x)		((x) << 22)
> > -#define DSIM_MAIN_HSA(x)		((x) << 0)
> > -#define DSIM_MAIN_VSA_MASK		((0x3ff) << 22)
> > -#define DSIM_MAIN_HSA_MASK		((0xffff) << 0)
> > -
> > -/* DSIM_SDRESOL */
> > -#define DSIM_SUB_STANDY(x)		((x) << 31)
> > -#define DSIM_SUB_VRESOL(x)		((x) << 16)
> > -#define DSIM_SUB_HRESOL(x)		((x) << 0)
> > -#define DSIM_SUB_STANDY_MASK		((0x1) << 31)
> > -#define DSIM_SUB_VRESOL_MASK		((0x7ff) << 16)
> > -#define DSIM_SUB_HRESOL_MASK		((0x7ff) << 0)
> > -
> > -/* DSIM_INTSRC */
> > -#define DSIM_INT_PLL_STABLE		(1 << 31)
> > -#define DSIM_INT_SW_RST_RELEASE		(1 << 30)
> > -#define DSIM_INT_SFR_FIFO_EMPTY		(1 << 29)
> > -#define DSIM_INT_SFR_HDR_FIFO_EMPTY	(1 << 28)
> > -#define DSIM_INT_BTA			(1 << 25)
> > -#define DSIM_INT_FRAME_DONE		(1 << 24)
> > -#define DSIM_INT_RX_TIMEOUT		(1 << 21)
> > -#define DSIM_INT_BTA_TIMEOUT		(1 << 20)
> > -#define DSIM_INT_RX_DONE		(1 << 18)
> > -#define DSIM_INT_RX_TE			(1 << 17)
> > -#define DSIM_INT_RX_ACK			(1 << 16)
> > -#define DSIM_INT_RX_ECC_ERR		(1 << 15)
> > -#define DSIM_INT_RX_CRC_ERR		(1 << 14)
> > +#include "exynos_drm_crtc.h"
> > +#include "exynos_drm_drv.h"
> >  
> > -/* DSIM_FIFOCTRL */
> > -#define DSIM_RX_DATA_FULL		(1 << 25)
> > -#define DSIM_RX_DATA_EMPTY		(1 << 24)
> > -#define DSIM_SFR_HEADER_FULL		(1 << 23)
> > -#define DSIM_SFR_HEADER_EMPTY		(1 << 22)
> > -#define DSIM_SFR_PAYLOAD_FULL		(1 << 21)
> > -#define DSIM_SFR_PAYLOAD_EMPTY		(1 << 20)
> > -#define DSIM_I80_HEADER_FULL		(1 << 19)
> > -#define DSIM_I80_HEADER_EMPTY		(1 << 18)
> > -#define DSIM_I80_PAYLOAD_FULL		(1 << 17)
> > -#define DSIM_I80_PAYLOAD_EMPTY		(1 << 16)
> > -#define DSIM_SD_HEADER_FULL		(1 << 15)
> > -#define DSIM_SD_HEADER_EMPTY		(1 << 14)
> > -#define DSIM_SD_PAYLOAD_FULL		(1 << 13)
> > -#define DSIM_SD_PAYLOAD_EMPTY		(1 << 12)
> > -#define DSIM_MD_HEADER_FULL		(1 << 11)
> > -#define DSIM_MD_HEADER_EMPTY		(1 << 10)
> > -#define DSIM_MD_PAYLOAD_FULL		(1 << 9)
> > -#define DSIM_MD_PAYLOAD_EMPTY		(1 << 8)
> > -#define DSIM_RX_FIFO			(1 << 4)
> > -#define DSIM_SFR_FIFO			(1 << 3)
> > -#define DSIM_I80_FIFO			(1 << 2)
> > -#define DSIM_SD_FIFO			(1 << 1)
> > -#define DSIM_MD_FIFO			(1 << 0)
> > -
> > -/* DSIM_PHYACCHR */
> > -#define DSIM_AFC_EN			(1 << 14)
> > -#define DSIM_AFC_CTL(x)			(((x) & 0x7) << 5)
> > -
> > -/* DSIM_PLLCTRL */
> > -#define DSIM_FREQ_BAND(x)		((x) << 24)
> > -#define DSIM_PLL_EN			(1 << 23)
> > -#define DSIM_PLL_P(x)			((x) << 13)
> > -#define DSIM_PLL_M(x)			((x) << 4)
> > -#define DSIM_PLL_S(x)			((x) << 1)
> > -
> > -/* DSIM_PHYCTRL */
> > -#define DSIM_PHYCTRL_ULPS_EXIT(x)	(((x) & 0x1ff) << 0)
> > -#define DSIM_PHYCTRL_B_DPHYCTL_VREG_LP	(1 << 30)
> > -#define DSIM_PHYCTRL_B_DPHYCTL_SLEW_UP	(1 << 14)
> > -
> > -/* DSIM_PHYTIMING */
> > -#define DSIM_PHYTIMING_LPX(x)		((x) << 8)
> > -#define DSIM_PHYTIMING_HS_EXIT(x)	((x) << 0)
> > -
> > -/* DSIM_PHYTIMING1 */
> > -#define DSIM_PHYTIMING1_CLK_PREPARE(x)	((x) << 24)
> > -#define DSIM_PHYTIMING1_CLK_ZERO(x)	((x) << 16)
> > -#define DSIM_PHYTIMING1_CLK_POST(x)	((x) << 8)
> > -#define DSIM_PHYTIMING1_CLK_TRAIL(x)	((x) << 0)
> > -
> > -/* DSIM_PHYTIMING2 */
> > -#define DSIM_PHYTIMING2_HS_PREPARE(x)	((x) << 16)
> > -#define DSIM_PHYTIMING2_HS_ZERO(x)	((x) << 8)
> > -#define DSIM_PHYTIMING2_HS_TRAIL(x)	((x) << 0)
> > -
> > -#define DSI_MAX_BUS_WIDTH		4
> > -#define DSI_NUM_VIRTUAL_CHANNELS	4
> > -#define DSI_TX_FIFO_SIZE		2048
> > -#define DSI_RX_FIFO_SIZE		256
> > -#define DSI_XFER_TIMEOUT_MS		100
> > -#define DSI_RX_FIFO_EMPTY		0x30800002
> > -
> > -#define OLD_SCLK_MIPI_CLK_NAME "pll_clk"
> > -
> > -static const char *const clk_names[5] = { "bus_clk", "sclk_mipi",
> > -	"phyclk_mipidphy0_bitclkdiv8", "phyclk_mipidphy0_rxclkesc0",
> > -	"sclk_rgb_vclk_to_dsim0" };
> > -
> > -enum exynos_dsi_transfer_type {
> > -	EXYNOS_DSI_TX,
> > -	EXYNOS_DSI_RX,
> > +enum {
> > +	DSI_PORT_IN,
> > +	DSI_PORT_OUT
> >  };
> >  
> > -struct exynos_dsi_transfer {
> > -	struct list_head list;
> > -	struct completion completed;
> > -	int result;
> > -	struct mipi_dsi_packet packet;
> > -	u16 flags;
> > -	u16 tx_done;
> > -
> > -	u8 *rx_payload;
> > -	u16 rx_len;
> > -	u16 rx_done;
> > -};
> > -
> > -#define DSIM_STATE_ENABLED		BIT(0)
> > -#define DSIM_STATE_INITIALIZED		BIT(1)
> > -#define DSIM_STATE_CMD_LPM		BIT(2)
> > -#define DSIM_STATE_VIDOUT_AVAILABLE	BIT(3)
> > -
> >  struct exynos_dsi {
> > -	struct drm_bridge bridge;
> > -	struct mipi_dsi_host dsi_host;
> > -	struct drm_connector connector;
> > -	struct drm_panel *panel;
> > -	struct list_head bridge_chain;
> > -	struct drm_bridge *out_bridge;
> > -	struct device *dev;
> > -
> > -	void __iomem *reg_base;
> > -	struct phy *phy;
> > -	struct clk **clks;
> > -	struct regulator_bulk_data supplies[2];
> > -	int irq;
> > -	int te_gpio;
> > -
> > -	u32 pll_clk_rate;
> > -	u32 burst_clk_rate;
> > -	u32 esc_clk_rate;
> > -	u32 lanes;
> > -	u32 mode_flags;
> > -	u32 format;
> > -
> > -	struct drm_display_mode mode;
> > -
> > -	int state;
> > -	struct drm_property *brightness;
> > -	struct completion completed;
> > -
> > -	spinlock_t transfer_lock; /* protects transfer_list */
> > -	struct list_head transfer_list;
> > -
> > -	const struct exynos_dsi_driver_data *driver_data;
> > +	struct samsung_dsim *dsi;
> > +	struct drm_encoder encoder;
> >  };
> >  
> > -#define host_to_dsi(host) container_of(host, struct exynos_dsi, dsi_host)
> > -#define connector_to_dsi(c) container_of(c, struct exynos_dsi, connector)
> > -
> > -enum reg_idx {
> > -	DSIM_STATUS_REG,	/* Status register */
> > -	DSIM_SWRST_REG,		/* Software reset register */
> > -	DSIM_CLKCTRL_REG,	/* Clock control register */
> > -	DSIM_TIMEOUT_REG,	/* Time out register */
> > -	DSIM_CONFIG_REG,	/* Configuration register */
> > -	DSIM_ESCMODE_REG,	/* Escape mode register */
> > -	DSIM_MDRESOL_REG,
> > -	DSIM_MVPORCH_REG,	/* Main display Vporch register */
> > -	DSIM_MHPORCH_REG,	/* Main display Hporch register */
> > -	DSIM_MSYNC_REG,		/* Main display sync area register */
> > -	DSIM_INTSRC_REG,	/* Interrupt source register */
> > -	DSIM_INTMSK_REG,	/* Interrupt mask register */
> > -	DSIM_PKTHDR_REG,	/* Packet Header FIFO register */
> > -	DSIM_PAYLOAD_REG,	/* Payload FIFO register */
> > -	DSIM_RXFIFO_REG,	/* Read FIFO register */
> > -	DSIM_FIFOCTRL_REG,	/* FIFO status and control register */
> > -	DSIM_PLLCTRL_REG,	/* PLL control register */
> > -	DSIM_PHYCTRL_REG,
> > -	DSIM_PHYTIMING_REG,
> > -	DSIM_PHYTIMING1_REG,
> > -	DSIM_PHYTIMING2_REG,
> > -	NUM_REGS
> > +static const unsigned int reg_values[] = {
> > +	[RESET_TYPE] = DSIM_SWRST,
> > +	[PLL_TIMER] = 500,
> > +	[STOP_STATE_CNT] = 0xf,
> > +	[PHYCTRL_ULPS_EXIT] = 0x0af,
> > +	[PHYCTRL_VREG_LP] = 0,
> > +	[PHYCTRL_SLEW_UP] = 0,
> > +	[PHYTIMING_LPX] = 0x06,
> > +	[PHYTIMING_HS_EXIT] = 0x0b,
> > +	[PHYTIMING_CLK_PREPARE] = 0x07,
> > +	[PHYTIMING_CLK_ZERO] = 0x27,
> > +	[PHYTIMING_CLK_POST] = 0x0d,
> > +	[PHYTIMING_CLK_TRAIL] = 0x08,
> > +	[PHYTIMING_HS_PREPARE] = 0x09,
> > +	[PHYTIMING_HS_ZERO] = 0x0d,
> > +	[PHYTIMING_HS_TRAIL] = 0x0b,
> >  };
> >  
> > -static const unsigned int exynos_reg_ofs[] = {
> > -	[DSIM_STATUS_REG] =  0x00,
> > -	[DSIM_SWRST_REG] =  0x04,
> > -	[DSIM_CLKCTRL_REG] =  0x08,
> > -	[DSIM_TIMEOUT_REG] =  0x0c,
> > -	[DSIM_CONFIG_REG] =  0x10,
> > -	[DSIM_ESCMODE_REG] =  0x14,
> > -	[DSIM_MDRESOL_REG] =  0x18,
> > -	[DSIM_MVPORCH_REG] =  0x1c,
> > -	[DSIM_MHPORCH_REG] =  0x20,
> > -	[DSIM_MSYNC_REG] =  0x24,
> > -	[DSIM_INTSRC_REG] =  0x2c,
> > -	[DSIM_INTMSK_REG] =  0x30,
> > -	[DSIM_PKTHDR_REG] =  0x34,
> > -	[DSIM_PAYLOAD_REG] =  0x38,
> > -	[DSIM_RXFIFO_REG] =  0x3c,
> > -	[DSIM_FIFOCTRL_REG] =  0x44,
> > -	[DSIM_PLLCTRL_REG] =  0x4c,
> > -	[DSIM_PHYCTRL_REG] =  0x5c,
> > -	[DSIM_PHYTIMING_REG] =  0x64,
> > -	[DSIM_PHYTIMING1_REG] =  0x68,
> > -	[DSIM_PHYTIMING2_REG] =  0x6c,
> > +static const unsigned int exynos5422_reg_values[] = {
> > +	[RESET_TYPE] = DSIM_SWRST,
> > +	[PLL_TIMER] = 500,
> > +	[STOP_STATE_CNT] = 0xf,
> > +	[PHYCTRL_ULPS_EXIT] = 0xaf,
> > +	[PHYCTRL_VREG_LP] = 0,
> > +	[PHYCTRL_SLEW_UP] = 0,
> > +	[PHYTIMING_LPX] = 0x08,
> > +	[PHYTIMING_HS_EXIT] = 0x0d,
> > +	[PHYTIMING_CLK_PREPARE] = 0x09,
> > +	[PHYTIMING_CLK_ZERO] = 0x30,
> > +	[PHYTIMING_CLK_POST] = 0x0e,
> > +	[PHYTIMING_CLK_TRAIL] = 0x0a,
> > +	[PHYTIMING_HS_PREPARE] = 0x0c,
> > +	[PHYTIMING_HS_ZERO] = 0x11,
> > +	[PHYTIMING_HS_TRAIL] = 0x0d,
> >  };
> >  
> > -static const unsigned int exynos5433_reg_ofs[] = {
> > -	[DSIM_STATUS_REG] = 0x04,
> > -	[DSIM_SWRST_REG] = 0x0C,
> > -	[DSIM_CLKCTRL_REG] = 0x10,
> > -	[DSIM_TIMEOUT_REG] = 0x14,
> > -	[DSIM_CONFIG_REG] = 0x18,
> > -	[DSIM_ESCMODE_REG] = 0x1C,
> > -	[DSIM_MDRESOL_REG] = 0x20,
> > -	[DSIM_MVPORCH_REG] = 0x24,
> > -	[DSIM_MHPORCH_REG] = 0x28,
> > -	[DSIM_MSYNC_REG] = 0x2C,
> > -	[DSIM_INTSRC_REG] = 0x34,
> > -	[DSIM_INTMSK_REG] = 0x38,
> > -	[DSIM_PKTHDR_REG] = 0x3C,
> > -	[DSIM_PAYLOAD_REG] = 0x40,
> > -	[DSIM_RXFIFO_REG] = 0x44,
> > -	[DSIM_FIFOCTRL_REG] = 0x4C,
> > -	[DSIM_PLLCTRL_REG] = 0x94,
> > -	[DSIM_PHYCTRL_REG] = 0xA4,
> > -	[DSIM_PHYTIMING_REG] = 0xB4,
> > -	[DSIM_PHYTIMING1_REG] = 0xB8,
> > -	[DSIM_PHYTIMING2_REG] = 0xBC,
> > +static const unsigned int exynos5433_reg_values[] = {
> > +	[RESET_TYPE] = DSIM_FUNCRST,
> > +	[PLL_TIMER] = 22200,
> > +	[STOP_STATE_CNT] = 0xa,
> > +	[PHYCTRL_ULPS_EXIT] = 0x190,
> > +	[PHYCTRL_VREG_LP] = 1,
> > +	[PHYCTRL_SLEW_UP] = 1,
> > +	[PHYTIMING_LPX] = 0x07,
> > +	[PHYTIMING_HS_EXIT] = 0x0c,
> > +	[PHYTIMING_CLK_PREPARE] = 0x09,
> > +	[PHYTIMING_CLK_ZERO] = 0x2d,
> > +	[PHYTIMING_CLK_POST] = 0x0e,
> > +	[PHYTIMING_CLK_TRAIL] = 0x09,
> > +	[PHYTIMING_HS_PREPARE] = 0x0b,
> > +	[PHYTIMING_HS_ZERO] = 0x10,
> > +	[PHYTIMING_HS_TRAIL] = 0x0c,
> >  };
> >  
> > -static inline void exynos_dsi_write(struct exynos_dsi *dsi, enum reg_idx idx,
> > -				    u32 val)
> > -{
> > -	const unsigned int *reg_ofs;
> > -
> > -	if (dsi->driver_data->reg_ofs == EXYNOS5433_REG_OFS)
> > -		reg_ofs = exynos5433_reg_ofs;
> > -	else
> > -		reg_ofs = exynos_reg_ofs;
> > -
> > -	writel(val, dsi->reg_base + reg_ofs[idx]);
> > -}
> > -
> > -static inline u32 exynos_dsi_read(struct exynos_dsi *dsi, enum reg_idx idx)
> > -{
> > -	const unsigned int *reg_ofs;
> > -
> > -	if (dsi->driver_data->reg_ofs == EXYNOS5433_REG_OFS)
> > -		reg_ofs = exynos5433_reg_ofs;
> > -	else
> > -		reg_ofs = exynos_reg_ofs;
> > -
> > -	return readl(dsi->reg_base + reg_ofs[idx]);
> > -}
> > -
> > -static void exynos_dsi_wait_for_reset(struct exynos_dsi *dsi)
> > -{
> > -	if (wait_for_completion_timeout(&dsi->completed, msecs_to_jiffies(300)))
> > -		return;
> > -
> > -	dev_err(dsi->dev, "timeout waiting for reset\n");
> > -}
> > -
> > -static void exynos_dsi_reset(struct exynos_dsi *dsi)
> > -{
> > -	u32 reset_val = dsi->driver_data->reg_values[RESET_TYPE];
> > -
> > -	reinit_completion(&dsi->completed);
> > -	exynos_dsi_write(dsi, DSIM_SWRST_REG, reset_val);
> > -}
> > -
> > -#ifndef MHZ
> > -#define MHZ	(1000*1000)
> > -#endif
> > -
> > -static unsigned long exynos_dsi_pll_find_pms(struct exynos_dsi *dsi,
> > -		unsigned long fin, unsigned long fout, u8 *p, u16 *m, u8 *s)
> > -{
> > -	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
> > -	unsigned long best_freq = 0;
> > -	u32 min_delta = 0xffffffff;
> > -	u8 p_min, p_max;
> > -	u8 _p, best_p;
> > -	u16 _m, best_m;
> > -	u8 _s, best_s;
> > -
> > -	p_min = DIV_ROUND_UP(fin, (12 * MHZ));
> > -	p_max = fin / (6 * MHZ);
> > -
> > -	for (_p = p_min; _p <= p_max; ++_p) {
> > -		for (_s = 0; _s <= 5; ++_s) {
> > -			u64 tmp;
> > -			u32 delta;
> > -
> > -			tmp = (u64)fout * (_p << _s);
> > -			do_div(tmp, fin);
> > -			_m = tmp;
> > -			if (_m < 41 || _m > 125)
> > -				continue;
> > -
> > -			tmp = (u64)_m * fin;
> > -			do_div(tmp, _p);
> > -			if (tmp < 500 * MHZ ||
> > -					tmp > driver_data->max_freq * MHZ)
> > -				continue;
> > -
> > -			tmp = (u64)_m * fin;
> > -			do_div(tmp, _p << _s);
> > -
> > -			delta = abs(fout - tmp);
> > -			if (delta < min_delta) {
> > -				best_p = _p;
> > -				best_m = _m;
> > -				best_s = _s;
> > -				min_delta = delta;
> > -				best_freq = tmp;
> > -			}
> > -		}
> > -	}
> > -
> > -	if (best_freq) {
> > -		*p = best_p;
> > -		*m = best_m;
> > -		*s = best_s;
> > -	}
> > -
> > -	return best_freq;
> > -}
> > -
> > -static unsigned long exynos_dsi_set_pll(struct exynos_dsi *dsi,
> > -					unsigned long freq)
> > -{
> > -	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
> > -	unsigned long fin, fout;
> > -	int timeout;
> > -	u8 p, s;
> > -	u16 m;
> > -	u32 reg;
> > -
> > -	fin = dsi->pll_clk_rate;
> > -	fout = exynos_dsi_pll_find_pms(dsi, fin, freq, &p, &m, &s);
> > -	if (!fout) {
> > -		dev_err(dsi->dev,
> > -			"failed to find PLL PMS for requested frequency\n");
> > -		return 0;
> > -	}
> > -	dev_dbg(dsi->dev, "PLL freq %lu, (p %d, m %d, s %d)\n", fout, p, m, s);
> > -
> > -	writel(driver_data->reg_values[PLL_TIMER],
> > -			dsi->reg_base + driver_data->plltmr_reg);
> > -
> > -	reg = DSIM_PLL_EN | DSIM_PLL_P(p) | DSIM_PLL_M(m) | DSIM_PLL_S(s);
> > -
> > -	if (driver_data->has_freqband) {
> > -		static const unsigned long freq_bands[] = {
> > -			100 * MHZ, 120 * MHZ, 160 * MHZ, 200 * MHZ,
> > -			270 * MHZ, 320 * MHZ, 390 * MHZ, 450 * MHZ,
> > -			510 * MHZ, 560 * MHZ, 640 * MHZ, 690 * MHZ,
> > -			770 * MHZ, 870 * MHZ, 950 * MHZ,
> > -		};
> > -		int band;
> > -
> > -		for (band = 0; band < ARRAY_SIZE(freq_bands); ++band)
> > -			if (fout < freq_bands[band])
> > -				break;
> > -
> > -		dev_dbg(dsi->dev, "band %d\n", band);
> > -
> > -		reg |= DSIM_FREQ_BAND(band);
> > -	}
> > -
> > -	exynos_dsi_write(dsi, DSIM_PLLCTRL_REG, reg);
> > -
> > -	timeout = 1000;
> > -	do {
> > -		if (timeout-- == 0) {
> > -			dev_err(dsi->dev, "PLL failed to stabilize\n");
> > -			return 0;
> > -		}
> > -		reg = exynos_dsi_read(dsi, DSIM_STATUS_REG);
> > -	} while ((reg & DSIM_PLL_STABLE) == 0);
> > -
> > -	return fout;
> > -}
> > -
> > -static int exynos_dsi_enable_clock(struct exynos_dsi *dsi)
> > -{
> > -	unsigned long hs_clk, byte_clk, esc_clk;
> > -	unsigned long esc_div;
> > -	u32 reg;
> > -
> > -	hs_clk = exynos_dsi_set_pll(dsi, dsi->burst_clk_rate);
> > -	if (!hs_clk) {
> > -		dev_err(dsi->dev, "failed to configure DSI PLL\n");
> > -		return -EFAULT;
> > -	}
> > -
> > -	byte_clk = hs_clk / 8;
> > -	esc_div = DIV_ROUND_UP(byte_clk, dsi->esc_clk_rate);
> > -	esc_clk = byte_clk / esc_div;
> > -
> > -	if (esc_clk > 20 * MHZ) {
> > -		++esc_div;
> > -		esc_clk = byte_clk / esc_div;
> > -	}
> > -
> > -	dev_dbg(dsi->dev, "hs_clk = %lu, byte_clk = %lu, esc_clk = %lu\n",
> > -		hs_clk, byte_clk, esc_clk);
> > -
> > -	reg = exynos_dsi_read(dsi, DSIM_CLKCTRL_REG);
> > -	reg &= ~(DSIM_ESC_PRESCALER_MASK | DSIM_LANE_ESC_CLK_EN_CLK
> > -			| DSIM_LANE_ESC_CLK_EN_DATA_MASK | DSIM_PLL_BYPASS
> > -			| DSIM_BYTE_CLK_SRC_MASK);
> > -	reg |= DSIM_ESC_CLKEN | DSIM_BYTE_CLKEN
> > -			| DSIM_ESC_PRESCALER(esc_div)
> > -			| DSIM_LANE_ESC_CLK_EN_CLK
> > -			| DSIM_LANE_ESC_CLK_EN_DATA(BIT(dsi->lanes) - 1)
> > -			| DSIM_BYTE_CLK_SRC(0)
> > -			| DSIM_TX_REQUEST_HSCLK;
> > -	exynos_dsi_write(dsi, DSIM_CLKCTRL_REG, reg);
> > -
> > -	return 0;
> > -}
> > -
> > -static void exynos_dsi_set_phy_ctrl(struct exynos_dsi *dsi)
> > -{
> > -	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
> > -	const unsigned int *reg_values = driver_data->reg_values;
> > -	u32 reg;
> > -
> > -	if (driver_data->has_freqband)
> > -		return;
> > -
> > -	/* B D-PHY: D-PHY Master & Slave Analog Block control */
> > -	reg = DSIM_PHYCTRL_ULPS_EXIT(reg_values[PHYCTRL_ULPS_EXIT]);
> > -	if (reg_values[PHYCTRL_VREG_LP])
> > -		reg |= DSIM_PHYCTRL_B_DPHYCTL_VREG_LP;
> > -	if (reg_values[PHYCTRL_SLEW_UP])
> > -		reg |= DSIM_PHYCTRL_B_DPHYCTL_SLEW_UP;
> > -	exynos_dsi_write(dsi, DSIM_PHYCTRL_REG, reg);
> > -
> > -	/*
> > -	 * T LPX: Transmitted length of any Low-Power state period
> > -	 * T HS-EXIT: Time that the transmitter drives LP-11 following a HS
> > -	 *	burst
> > -	 */
> > -	reg = DSIM_PHYTIMING_LPX(reg_values[PHYTIMING_LPX]) |
> > -		DSIM_PHYTIMING_HS_EXIT(reg_values[PHYTIMING_HS_EXIT]);
> > -	exynos_dsi_write(dsi, DSIM_PHYTIMING_REG, reg);
> > -
> > -	/*
> > -	 * T CLK-PREPARE: Time that the transmitter drives the Clock Lane LP-00
> > -	 *	Line state immediately before the HS-0 Line state starting the
> > -	 *	HS transmission
> > -	 * T CLK-ZERO: Time that the transmitter drives the HS-0 state prior to
> > -	 *	transmitting the Clock.
> > -	 * T CLK_POST: Time that the transmitter continues to send HS clock
> > -	 *	after the last associated Data Lane has transitioned to LP Mode
> > -	 *	Interval is defined as the period from the end of T HS-TRAIL to
> > -	 *	the beginning of T CLK-TRAIL
> > -	 * T CLK-TRAIL: Time that the transmitter drives the HS-0 state after
> > -	 *	the last payload clock bit of a HS transmission burst
> > -	 */
> > -	reg = DSIM_PHYTIMING1_CLK_PREPARE(reg_values[PHYTIMING_CLK_PREPARE]) |
> > -		DSIM_PHYTIMING1_CLK_ZERO(reg_values[PHYTIMING_CLK_ZERO]) |
> > -		DSIM_PHYTIMING1_CLK_POST(reg_values[PHYTIMING_CLK_POST]) |
> > -		DSIM_PHYTIMING1_CLK_TRAIL(reg_values[PHYTIMING_CLK_TRAIL]);
> > -	exynos_dsi_write(dsi, DSIM_PHYTIMING1_REG, reg);
> > -
> > -	/*
> > -	 * T HS-PREPARE: Time that the transmitter drives the Data Lane LP-00
> > -	 *	Line state immediately before the HS-0 Line state starting the
> > -	 *	HS transmission
> > -	 * T HS-ZERO: Time that the transmitter drives the HS-0 state prior to
> > -	 *	transmitting the Sync sequence.
> > -	 * T HS-TRAIL: Time that the transmitter drives the flipped differential
> > -	 *	state after last payload data bit of a HS transmission burst
> > -	 */
> > -	reg = DSIM_PHYTIMING2_HS_PREPARE(reg_values[PHYTIMING_HS_PREPARE]) |
> > -		DSIM_PHYTIMING2_HS_ZERO(reg_values[PHYTIMING_HS_ZERO]) |
> > -		DSIM_PHYTIMING2_HS_TRAIL(reg_values[PHYTIMING_HS_TRAIL]);
> > -	exynos_dsi_write(dsi, DSIM_PHYTIMING2_REG, reg);
> > -}
> > -
> > -static void exynos_dsi_disable_clock(struct exynos_dsi *dsi)
> > -{
> > -	u32 reg;
> > -
> > -	reg = exynos_dsi_read(dsi, DSIM_CLKCTRL_REG);
> > -	reg &= ~(DSIM_LANE_ESC_CLK_EN_CLK | DSIM_LANE_ESC_CLK_EN_DATA_MASK
> > -			| DSIM_ESC_CLKEN | DSIM_BYTE_CLKEN);
> > -	exynos_dsi_write(dsi, DSIM_CLKCTRL_REG, reg);
> > -
> > -	reg = exynos_dsi_read(dsi, DSIM_PLLCTRL_REG);
> > -	reg &= ~DSIM_PLL_EN;
> > -	exynos_dsi_write(dsi, DSIM_PLLCTRL_REG, reg);
> > -}
> > -
> > -static void exynos_dsi_enable_lane(struct exynos_dsi *dsi, u32 lane)
> > -{
> > -	u32 reg = exynos_dsi_read(dsi, DSIM_CONFIG_REG);
> > -	reg |= (DSIM_NUM_OF_DATA_LANE(dsi->lanes - 1) | DSIM_LANE_EN_CLK |
> > -			DSIM_LANE_EN(lane));
> > -	exynos_dsi_write(dsi, DSIM_CONFIG_REG, reg);
> > -}
> > -
> > -static int exynos_dsi_init_link(struct exynos_dsi *dsi)
> > +static int exynos_dsi_host_attach(struct device *dev,
> > +				  struct mipi_dsi_device *device)
> >  {
> > -	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
> > -	int timeout;
> > -	u32 reg;
> > -	u32 lanes_mask;
> > -
> > -	/* Initialize FIFO pointers */
> > -	reg = exynos_dsi_read(dsi, DSIM_FIFOCTRL_REG);
> > -	reg &= ~0x1f;
> > -	exynos_dsi_write(dsi, DSIM_FIFOCTRL_REG, reg);
> > -
> > -	usleep_range(9000, 11000);
> > -
> > -	reg |= 0x1f;
> > -	exynos_dsi_write(dsi, DSIM_FIFOCTRL_REG, reg);
> > -	usleep_range(9000, 11000);
> > +	struct exynos_dsi *dsi = dev_get_drvdata(dev);
> > +	struct drm_device *drm = dsi->encoder.dev;
> > +	struct exynos_drm_crtc *crtc;
> >  
> > -	/* DSI configuration */
> > -	reg = 0;
> > +	mutex_lock(&drm->mode_config.mutex);
> > +	crtc = exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD);
> > +	crtc->i80_mode = !(device->mode_flags & MIPI_DSI_MODE_VIDEO);
> > +	mutex_unlock(&drm->mode_config.mutex);
> >  
> > -	/*
> > -	 * The first bit of mode_flags specifies display configuration.
> > -	 * If this bit is set[= MIPI_DSI_MODE_VIDEO], dsi will support video
> > -	 * mode, otherwise it will support command mode.
> > -	 */
> > -	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
> > -		reg |= DSIM_VIDEO_MODE;
> > -
> > -		/*
> > -		 * The user manual describes that following bits are ignored in
> > -		 * command mode.
> > -		 */
> > -		if (!(dsi->mode_flags & MIPI_DSI_MODE_VSYNC_FLUSH))
> > -			reg |= DSIM_MFLUSH_VS;
> > -		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE)
> > -			reg |= DSIM_SYNC_INFORM;
> > -		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_BURST)
> > -			reg |= DSIM_BURST_MODE;
> > -		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_AUTO_VERT)
> > -			reg |= DSIM_AUTO_MODE;
> > -		if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSE)
> > -			reg |= DSIM_HSE_MODE;
> > -		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HFP))
> > -			reg |= DSIM_HFP_MODE;
> > -		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HBP))
> > -			reg |= DSIM_HBP_MODE;
> > -		if (!(dsi->mode_flags & MIPI_DSI_MODE_VIDEO_HSA))
> > -			reg |= DSIM_HSA_MODE;
> > -	}
> > -
> > -	if (!(dsi->mode_flags & MIPI_DSI_MODE_EOT_PACKET))
> > -		reg |= DSIM_EOT_DISABLE;
> > -
> > -	switch (dsi->format) {
> > -	case MIPI_DSI_FMT_RGB888:
> > -		reg |= DSIM_MAIN_PIX_FORMAT_RGB888;
> > -		break;
> > -	case MIPI_DSI_FMT_RGB666:
> > -		reg |= DSIM_MAIN_PIX_FORMAT_RGB666;
> > -		break;
> > -	case MIPI_DSI_FMT_RGB666_PACKED:
> > -		reg |= DSIM_MAIN_PIX_FORMAT_RGB666_P;
> > -		break;
> > -	case MIPI_DSI_FMT_RGB565:
> > -		reg |= DSIM_MAIN_PIX_FORMAT_RGB565;
> > -		break;
> > -	default:
> > -		dev_err(dsi->dev, "invalid pixel format\n");
> > -		return -EINVAL;
> > -	}
> > -
> > -	/*
> > -	 * Use non-continuous clock mode if the periparal wants and
> > -	 * host controller supports
> > -	 *
> > -	 * In non-continous clock mode, host controller will turn off
> > -	 * the HS clock between high-speed transmissions to reduce
> > -	 * power consumption.
> > -	 */
> > -	if (driver_data->has_clklane_stop &&
> > -			dsi->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS) {
> > -		reg |= DSIM_CLKLANE_STOP;
> > -	}
> > -	exynos_dsi_write(dsi, DSIM_CONFIG_REG, reg);
> > -
> > -	lanes_mask = BIT(dsi->lanes) - 1;
> > -	exynos_dsi_enable_lane(dsi, lanes_mask);
> > -
> > -	/* Check clock and data lane state are stop state */
> > -	timeout = 100;
> > -	do {
> > -		if (timeout-- == 0) {
> > -			dev_err(dsi->dev, "waiting for bus lanes timed out\n");
> > -			return -EFAULT;
> > -		}
> > -
> > -		reg = exynos_dsi_read(dsi, DSIM_STATUS_REG);
> > -		if ((reg & DSIM_STOP_STATE_DAT(lanes_mask))
> > -		    != DSIM_STOP_STATE_DAT(lanes_mask))
> > -			continue;
> > -	} while (!(reg & (DSIM_STOP_STATE_CLK | DSIM_TX_READY_HS_CLK)));
> > -
> > -	reg = exynos_dsi_read(dsi, DSIM_ESCMODE_REG);
> > -	reg &= ~DSIM_STOP_STATE_CNT_MASK;
> > -	reg |= DSIM_STOP_STATE_CNT(driver_data->reg_values[STOP_STATE_CNT]);
> > -	exynos_dsi_write(dsi, DSIM_ESCMODE_REG, reg);
> > -
> > -	reg = DSIM_BTA_TIMEOUT(0xff) | DSIM_LPDR_TIMEOUT(0xffff);
> > -	exynos_dsi_write(dsi, DSIM_TIMEOUT_REG, reg);
> > +	if (drm->mode_config.poll_enabled)
> > +		drm_kms_helper_hotplug_event(drm);
> >  
> >  	return 0;
> >  }
> >  
> > -static void exynos_dsi_set_display_mode(struct exynos_dsi *dsi)
> > -{
> > -	struct drm_display_mode *m = &dsi->mode;
> > -	unsigned int num_bits_resol = dsi->driver_data->num_bits_resol;
> > -	u32 reg;
> > -
> > -	if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) {
> > -		reg = DSIM_CMD_ALLOW(0xf)
> > -			| DSIM_STABLE_VFP(m->vsync_start - m->vdisplay)
> > -			| DSIM_MAIN_VBP(m->vtotal - m->vsync_end);
> > -		exynos_dsi_write(dsi, DSIM_MVPORCH_REG, reg);
> > -
> > -		reg = DSIM_MAIN_HFP(m->hsync_start - m->hdisplay)
> > -			| DSIM_MAIN_HBP(m->htotal - m->hsync_end);
> > -		exynos_dsi_write(dsi, DSIM_MHPORCH_REG, reg);
> > -
> > -		reg = DSIM_MAIN_VSA(m->vsync_end - m->vsync_start)
> > -			| DSIM_MAIN_HSA(m->hsync_end - m->hsync_start);
> > -		exynos_dsi_write(dsi, DSIM_MSYNC_REG, reg);
> > -	}
> > -	reg =  DSIM_MAIN_HRESOL(m->hdisplay, num_bits_resol) |
> > -		DSIM_MAIN_VRESOL(m->vdisplay, num_bits_resol);
> > -
> > -	exynos_dsi_write(dsi, DSIM_MDRESOL_REG, reg);
> > -
> > -	dev_dbg(dsi->dev, "LCD size = %dx%d\n", m->hdisplay, m->vdisplay);
> > -}
> > -
> > -static void exynos_dsi_set_display_enable(struct exynos_dsi *dsi, bool enable)
> > -{
> > -	u32 reg;
> > -
> > -	reg = exynos_dsi_read(dsi, DSIM_MDRESOL_REG);
> > -	if (enable)
> > -		reg |= DSIM_MAIN_STAND_BY;
> > -	else
> > -		reg &= ~DSIM_MAIN_STAND_BY;
> > -	exynos_dsi_write(dsi, DSIM_MDRESOL_REG, reg);
> > -}
> > -
> > -static int exynos_dsi_wait_for_hdr_fifo(struct exynos_dsi *dsi)
> > -{
> > -	int timeout = 2000;
> > -
> > -	do {
> > -		u32 reg = exynos_dsi_read(dsi, DSIM_FIFOCTRL_REG);
> > -
> > -		if (!(reg & DSIM_SFR_HEADER_FULL))
> > -			return 0;
> > -
> > -		if (!cond_resched())
> > -			usleep_range(950, 1050);
> > -	} while (--timeout);
> > -
> > -	return -ETIMEDOUT;
> > -}
> > -
> > -static void exynos_dsi_set_cmd_lpm(struct exynos_dsi *dsi, bool lpm)
> > -{
> > -	u32 v = exynos_dsi_read(dsi, DSIM_ESCMODE_REG);
> > -
> > -	if (lpm)
> > -		v |= DSIM_CMD_LPDT_LP;
> > -	else
> > -		v &= ~DSIM_CMD_LPDT_LP;
> > -
> > -	exynos_dsi_write(dsi, DSIM_ESCMODE_REG, v);
> > -}
> > -
> > -static void exynos_dsi_force_bta(struct exynos_dsi *dsi)
> > -{
> > -	u32 v = exynos_dsi_read(dsi, DSIM_ESCMODE_REG);
> > -	v |= DSIM_FORCE_BTA;
> > -	exynos_dsi_write(dsi, DSIM_ESCMODE_REG, v);
> > -}
> > -
> > -static void exynos_dsi_send_to_fifo(struct exynos_dsi *dsi,
> > -					struct exynos_dsi_transfer *xfer)
> > -{
> > -	struct device *dev = dsi->dev;
> > -	struct mipi_dsi_packet *pkt = &xfer->packet;
> > -	const u8 *payload = pkt->payload + xfer->tx_done;
> > -	u16 length = pkt->payload_length - xfer->tx_done;
> > -	bool first = !xfer->tx_done;
> > -	u32 reg;
> > -
> > -	dev_dbg(dev, "< xfer %pK: tx len %u, done %u, rx len %u, done %u\n",
> > -		xfer, length, xfer->tx_done, xfer->rx_len, xfer->rx_done);
> > -
> > -	if (length > DSI_TX_FIFO_SIZE)
> > -		length = DSI_TX_FIFO_SIZE;
> > -
> > -	xfer->tx_done += length;
> > -
> > -	/* Send payload */
> > -	while (length >= 4) {
> > -		reg = get_unaligned_le32(payload);
> > -		exynos_dsi_write(dsi, DSIM_PAYLOAD_REG, reg);
> > -		payload += 4;
> > -		length -= 4;
> > -	}
> > -
> > -	reg = 0;
> > -	switch (length) {
> > -	case 3:
> > -		reg |= payload[2] << 16;
> > -		fallthrough;
> > -	case 2:
> > -		reg |= payload[1] << 8;
> > -		fallthrough;
> > -	case 1:
> > -		reg |= payload[0];
> > -		exynos_dsi_write(dsi, DSIM_PAYLOAD_REG, reg);
> > -		break;
> > -	}
> > -
> > -	/* Send packet header */
> > -	if (!first)
> > -		return;
> > -
> > -	reg = get_unaligned_le32(pkt->header);
> > -	if (exynos_dsi_wait_for_hdr_fifo(dsi)) {
> > -		dev_err(dev, "waiting for header FIFO timed out\n");
> > -		return;
> > -	}
> > -
> > -	if (NEQV(xfer->flags & MIPI_DSI_MSG_USE_LPM,
> > -		 dsi->state & DSIM_STATE_CMD_LPM)) {
> > -		exynos_dsi_set_cmd_lpm(dsi, xfer->flags & MIPI_DSI_MSG_USE_LPM);
> > -		dsi->state ^= DSIM_STATE_CMD_LPM;
> > -	}
> > -
> > -	exynos_dsi_write(dsi, DSIM_PKTHDR_REG, reg);
> > -
> > -	if (xfer->flags & MIPI_DSI_MSG_REQ_ACK)
> > -		exynos_dsi_force_bta(dsi);
> > -}
> > -
> > -static void exynos_dsi_read_from_fifo(struct exynos_dsi *dsi,
> > -					struct exynos_dsi_transfer *xfer)
> > -{
> > -	u8 *payload = xfer->rx_payload + xfer->rx_done;
> > -	bool first = !xfer->rx_done;
> > -	struct device *dev = dsi->dev;
> > -	u16 length;
> > -	u32 reg;
> > -
> > -	if (first) {
> > -		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);
> > -
> > -		switch (reg & 0x3f) {
> > -		case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE:
> > -		case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE:
> > -			if (xfer->rx_len >= 2) {
> > -				payload[1] = reg >> 16;
> > -				++xfer->rx_done;
> > -			}
> > -			fallthrough;
> > -		case MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE:
> > -		case MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE:
> > -			payload[0] = reg >> 8;
> > -			++xfer->rx_done;
> > -			xfer->rx_len = xfer->rx_done;
> > -			xfer->result = 0;
> > -			goto clear_fifo;
> > -		case MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT:
> > -			dev_err(dev, "DSI Error Report: 0x%04x\n",
> > -				(reg >> 8) & 0xffff);
> > -			xfer->result = 0;
> > -			goto clear_fifo;
> > -		}
> > -
> > -		length = (reg >> 8) & 0xffff;
> > -		if (length > xfer->rx_len) {
> > -			dev_err(dev,
> > -				"response too long (%u > %u bytes), stripping\n",
> > -				xfer->rx_len, length);
> > -			length = xfer->rx_len;
> > -		} else if (length < xfer->rx_len)
> > -			xfer->rx_len = length;
> > -	}
> > -
> > -	length = xfer->rx_len - xfer->rx_done;
> > -	xfer->rx_done += length;
> > -
> > -	/* Receive payload */
> > -	while (length >= 4) {
> > -		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);
> > -		payload[0] = (reg >>  0) & 0xff;
> > -		payload[1] = (reg >>  8) & 0xff;
> > -		payload[2] = (reg >> 16) & 0xff;
> > -		payload[3] = (reg >> 24) & 0xff;
> > -		payload += 4;
> > -		length -= 4;
> > -	}
> > -
> > -	if (length) {
> > -		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);
> > -		switch (length) {
> > -		case 3:
> > -			payload[2] = (reg >> 16) & 0xff;
> > -			fallthrough;
> > -		case 2:
> > -			payload[1] = (reg >> 8) & 0xff;
> > -			fallthrough;
> > -		case 1:
> > -			payload[0] = reg & 0xff;
> > -		}
> > -	}
> > -
> > -	if (xfer->rx_done == xfer->rx_len)
> > -		xfer->result = 0;
> > -
> > -clear_fifo:
> > -	length = DSI_RX_FIFO_SIZE / 4;
> > -	do {
> > -		reg = exynos_dsi_read(dsi, DSIM_RXFIFO_REG);
> > -		if (reg == DSI_RX_FIFO_EMPTY)
> > -			break;
> > -	} while (--length);
> > -}
> > -
> > -static void exynos_dsi_transfer_start(struct exynos_dsi *dsi)
> > -{
> > -	unsigned long flags;
> > -	struct exynos_dsi_transfer *xfer;
> > -	bool start = false;
> > -
> > -again:
> > -	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > -
> > -	if (list_empty(&dsi->transfer_list)) {
> > -		spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > -		return;
> > -	}
> > -
> > -	xfer = list_first_entry(&dsi->transfer_list,
> > -					struct exynos_dsi_transfer, list);
> > -
> > -	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > -
> > -	if (xfer->packet.payload_length &&
> > -	    xfer->tx_done == xfer->packet.payload_length)
> > -		/* waiting for RX */
> > -		return;
> > -
> > -	exynos_dsi_send_to_fifo(dsi, xfer);
> > -
> > -	if (xfer->packet.payload_length || xfer->rx_len)
> > -		return;
> > -
> > -	xfer->result = 0;
> > -	complete(&xfer->completed);
> > -
> > -	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > -
> > -	list_del_init(&xfer->list);
> > -	start = !list_empty(&dsi->transfer_list);
> > -
> > -	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > -
> > -	if (start)
> > -		goto again;
> > -}
> > -
> > -static bool exynos_dsi_transfer_finish(struct exynos_dsi *dsi)
> > -{
> > -	struct exynos_dsi_transfer *xfer;
> > -	unsigned long flags;
> > -	bool start = true;
> > -
> > -	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > -
> > -	if (list_empty(&dsi->transfer_list)) {
> > -		spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > -		return false;
> > -	}
> > -
> > -	xfer = list_first_entry(&dsi->transfer_list,
> > -					struct exynos_dsi_transfer, list);
> > -
> > -	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > -
> > -	dev_dbg(dsi->dev,
> > -		"> xfer %pK, tx_len %zu, tx_done %u, rx_len %u, rx_done %u\n",
> > -		xfer, xfer->packet.payload_length, xfer->tx_done, xfer->rx_len,
> > -		xfer->rx_done);
> > -
> > -	if (xfer->tx_done != xfer->packet.payload_length)
> > -		return true;
> > -
> > -	if (xfer->rx_done != xfer->rx_len)
> > -		exynos_dsi_read_from_fifo(dsi, xfer);
> > -
> > -	if (xfer->rx_done != xfer->rx_len)
> > -		return true;
> > -
> > -	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > -
> > -	list_del_init(&xfer->list);
> > -	start = !list_empty(&dsi->transfer_list);
> > -
> > -	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > -
> > -	if (!xfer->rx_len)
> > -		xfer->result = 0;
> > -	complete(&xfer->completed);
> > -
> > -	return start;
> > -}
> > -
> > -static void exynos_dsi_remove_transfer(struct exynos_dsi *dsi,
> > -					struct exynos_dsi_transfer *xfer)
> > -{
> > -	unsigned long flags;
> > -	bool start;
> > -
> > -	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > -
> > -	if (!list_empty(&dsi->transfer_list) &&
> > -	    xfer == list_first_entry(&dsi->transfer_list,
> > -				     struct exynos_dsi_transfer, list)) {
> > -		list_del_init(&xfer->list);
> > -		start = !list_empty(&dsi->transfer_list);
> > -		spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > -		if (start)
> > -			exynos_dsi_transfer_start(dsi);
> > -		return;
> > -	}
> > -
> > -	list_del_init(&xfer->list);
> > -
> > -	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > -}
> > -
> > -static int exynos_dsi_transfer(struct exynos_dsi *dsi,
> > -					struct exynos_dsi_transfer *xfer)
> > -{
> > -	unsigned long flags;
> > -	bool stopped;
> > -
> > -	xfer->tx_done = 0;
> > -	xfer->rx_done = 0;
> > -	xfer->result = -ETIMEDOUT;
> > -	init_completion(&xfer->completed);
> > -
> > -	spin_lock_irqsave(&dsi->transfer_lock, flags);
> > -
> > -	stopped = list_empty(&dsi->transfer_list);
> > -	list_add_tail(&xfer->list, &dsi->transfer_list);
> > -
> > -	spin_unlock_irqrestore(&dsi->transfer_lock, flags);
> > -
> > -	if (stopped)
> > -		exynos_dsi_transfer_start(dsi);
> > -
> > -	wait_for_completion_timeout(&xfer->completed,
> > -				    msecs_to_jiffies(DSI_XFER_TIMEOUT_MS));
> > -	if (xfer->result == -ETIMEDOUT) {
> > -		struct mipi_dsi_packet *pkt = &xfer->packet;
> > -		exynos_dsi_remove_transfer(dsi, xfer);
> > -		dev_err(dsi->dev, "xfer timed out: %*ph %*ph\n", 4, pkt->header,
> > -			(int)pkt->payload_length, pkt->payload);
> > -		return -ETIMEDOUT;
> > -	}
> > -
> > -	/* Also covers hardware timeout condition */
> > -	return xfer->result;
> > -}
> > -
> > -static irqreturn_t exynos_dsi_irq(int irq, void *dev_id)
> > -{
> > -	struct exynos_dsi *dsi = dev_id;
> > -	u32 status;
> > -
> > -	status = exynos_dsi_read(dsi, DSIM_INTSRC_REG);
> > -	if (!status) {
> > -		static unsigned long int j;
> > -		if (printk_timed_ratelimit(&j, 500))
> > -			dev_warn(dsi->dev, "spurious interrupt\n");
> > -		return IRQ_HANDLED;
> > -	}
> > -	exynos_dsi_write(dsi, DSIM_INTSRC_REG, status);
> > -
> > -	if (status & DSIM_INT_SW_RST_RELEASE) {
> > -		u32 mask = ~(DSIM_INT_RX_DONE | DSIM_INT_SFR_FIFO_EMPTY |
> > -			DSIM_INT_SFR_HDR_FIFO_EMPTY | DSIM_INT_RX_ECC_ERR |
> > -			DSIM_INT_SW_RST_RELEASE);
> > -		exynos_dsi_write(dsi, DSIM_INTMSK_REG, mask);
> > -		complete(&dsi->completed);
> > -		return IRQ_HANDLED;
> > -	}
> > -
> > -	if (!(status & (DSIM_INT_RX_DONE | DSIM_INT_SFR_FIFO_EMPTY |
> > -			DSIM_INT_PLL_STABLE)))
> > -		return IRQ_HANDLED;
> > -
> > -	if (exynos_dsi_transfer_finish(dsi))
> > -		exynos_dsi_transfer_start(dsi);
> > -
> > -	return IRQ_HANDLED;
> > -}
> > -
> > -static irqreturn_t exynos_dsi_te_irq_handler(int irq, void *dev_id)
> > -{
> > -	struct exynos_dsi *dsi = dev_id;
> > -	const struct exynos_dsi_host_ops *ops = dsi->driver_data->host_ops;
> > -
> > -	if (ops && ops->te_handler &&
> > -	    (dsi->state & DSIM_STATE_VIDOUT_AVAILABLE))
> > -		ops->te_handler(dsi->dsi_host.dev);
> > -
> > -	return IRQ_HANDLED;
> > -}
> > -
> > -static void exynos_dsi_enable_irq(struct exynos_dsi *dsi)
> > -{
> > -	enable_irq(dsi->irq);
> > -
> > -	if (gpio_is_valid(dsi->te_gpio))
> > -		enable_irq(gpio_to_irq(dsi->te_gpio));
> > -}
> > -
> > -static void exynos_dsi_disable_irq(struct exynos_dsi *dsi)
> > -{
> > -	if (gpio_is_valid(dsi->te_gpio))
> > -		disable_irq(gpio_to_irq(dsi->te_gpio));
> > -
> > -	disable_irq(dsi->irq);
> > -}
> > -
> > -static int exynos_dsi_init(struct exynos_dsi *dsi)
> > +static int exynos_dsi_host_detach(struct device *dev,
> > +				  struct mipi_dsi_device *device)
> >  {
> > -	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
> > -
> > -	exynos_dsi_reset(dsi);
> > -	exynos_dsi_enable_irq(dsi);
> > +	struct exynos_dsi *dsi = dev_get_drvdata(dev);
> > +	struct drm_device *drm = dsi->encoder.dev;
> >  
> > -	if (driver_data->reg_values[RESET_TYPE] == DSIM_FUNCRST)
> > -		exynos_dsi_enable_lane(dsi, BIT(dsi->lanes) - 1);
> > -
> > -	exynos_dsi_enable_clock(dsi);
> > -	if (driver_data->wait_for_reset)
> > -		exynos_dsi_wait_for_reset(dsi);
> > -	exynos_dsi_set_phy_ctrl(dsi);
> > -	exynos_dsi_init_link(dsi);
> > +	if (drm->mode_config.poll_enabled)
> > +		drm_kms_helper_hotplug_event(drm);
> >  
> >  	return 0;
> >  }
> >  
> > -static int exynos_dsi_register_te_irq(struct exynos_dsi *dsi,
> > -				      struct device *panel)
> > +static void exynos_dsi_te_handler(struct device *dev)
> >  {
> > -	int ret;
> > -	int te_gpio_irq;
> > +	struct exynos_dsi *dsi = dev_get_drvdata(dev);
> >  
> > -	dsi->te_gpio = of_get_named_gpio(panel->of_node, "te-gpios", 0);
> > -	if (dsi->te_gpio == -ENOENT)
> > -		return 0;
> > -
> > -	if (!gpio_is_valid(dsi->te_gpio)) {
> > -		ret = dsi->te_gpio;
> > -		dev_err(dsi->dev, "cannot get te-gpios, %d\n", ret);
> > -		goto out;
> > -	}
> > -
> > -	ret = gpio_request(dsi->te_gpio, "te_gpio");
> > -	if (ret) {
> > -		dev_err(dsi->dev, "gpio request failed with %d\n", ret);
> > -		goto out;
> > -	}
> > -
> > -	te_gpio_irq = gpio_to_irq(dsi->te_gpio);
> > -	irq_set_status_flags(te_gpio_irq, IRQ_NOAUTOEN);
> > -
> > -	ret = request_threaded_irq(te_gpio_irq, exynos_dsi_te_irq_handler, NULL,
> > -					IRQF_TRIGGER_RISING, "TE", dsi);
> > -	if (ret) {
> > -		dev_err(dsi->dev, "request interrupt failed with %d\n", ret);
> > -		gpio_free(dsi->te_gpio);
> > -		goto out;
> > -	}
> > -
> > -out:
> > -	return ret;
> > +	exynos_drm_crtc_te_handler(dsi->encoder.crtc);
> >  }
> >  
> > -static void exynos_dsi_unregister_te_irq(struct exynos_dsi *dsi)
> > -{
> > -	if (gpio_is_valid(dsi->te_gpio)) {
> > -		free_irq(gpio_to_irq(dsi->te_gpio), dsi);
> > -		gpio_free(dsi->te_gpio);
> > -		dsi->te_gpio = -ENOENT;
> > -	}
> > -}
> > -
> > -static void exynos_dsi_enable(struct exynos_dsi *dsi)
> > -{
> > -	struct drm_bridge *iter;
> > -	int ret;
> > -
> > -	if (dsi->state & DSIM_STATE_ENABLED)
> > -		return;
> > -
> > -	pm_runtime_get_sync(dsi->dev);
> > -	dsi->state |= DSIM_STATE_ENABLED;
> > -
> > -	if (dsi->panel) {
> > -		ret = drm_panel_prepare(dsi->panel);
> > -		if (ret < 0)
> > -			goto err_put_sync;
> > -	} else {
> > -		list_for_each_entry_reverse(iter, &dsi->bridge_chain,
> > -					    chain_node) {
> > -			if (iter->funcs->pre_enable)
> > -				iter->funcs->pre_enable(iter);
> > -		}
> > -	}
> > -
> > -	exynos_dsi_set_display_mode(dsi);
> > -	exynos_dsi_set_display_enable(dsi, true);
> > -
> > -	if (dsi->panel) {
> > -		ret = drm_panel_enable(dsi->panel);
> > -		if (ret < 0)
> > -			goto err_display_disable;
> > -	} else {
> > -		list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {
> > -			if (iter->funcs->enable)
> > -				iter->funcs->enable(iter);
> > -		}
> > -	}
> > -
> > -	dsi->state |= DSIM_STATE_VIDOUT_AVAILABLE;
> > -	return;
> > -
> > -err_display_disable:
> > -	exynos_dsi_set_display_enable(dsi, false);
> > -	drm_panel_unprepare(dsi->panel);
> > -
> > -err_put_sync:
> > -	dsi->state &= ~DSIM_STATE_ENABLED;
> > -	pm_runtime_put(dsi->dev);
> > -}
> > -
> > -static void exynos_dsi_disable(struct exynos_dsi *dsi)
> > -{
> > -	struct drm_bridge *iter;
> > -
> > -	if (!(dsi->state & DSIM_STATE_ENABLED))
> > -		return;
> > -
> > -	dsi->state &= ~DSIM_STATE_VIDOUT_AVAILABLE;
> > -
> > -	drm_panel_disable(dsi->panel);
> > -
> > -	list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) {
> > -		if (iter->funcs->disable)
> > -			iter->funcs->disable(iter);
> > -	}
> > -
> > -	exynos_dsi_set_display_enable(dsi, false);
> > -	drm_panel_unprepare(dsi->panel);
> > -
> > -	list_for_each_entry(iter, &dsi->bridge_chain, chain_node) {
> > -		if (iter->funcs->post_disable)
> > -			iter->funcs->post_disable(iter);
> > -	}
> > -
> > -	dsi->state &= ~DSIM_STATE_ENABLED;
> > -	pm_runtime_put_sync(dsi->dev);
> > -}
> > -
> > -static enum drm_connector_status
> > -exynos_dsi_detect(struct drm_connector *connector, bool force)
> > -{
> > -	return connector->status;
> > -}
> > +static const struct samsung_dsim_host_ops exynos_dsi_host_ops = {
> > +	.attach = exynos_dsi_host_attach,
> > +	.detach = exynos_dsi_host_detach,
> > +	.te_handler = exynos_dsi_te_handler,
> > +};
> >  
> > -static void exynos_dsi_connector_destroy(struct drm_connector *connector)
> > -{
> > -	drm_connector_unregister(connector);
> > -	drm_connector_cleanup(connector);
> > -	connector->dev = NULL;
> > -}
> > +static const struct samsung_dsim_driver_data exynos3_dsi_driver_data = {
> > +	.reg_ofs = EXYNOS_REG_OFS,
> > +	.plltmr_reg = 0x50,
> > +	.has_freqband = 1,
> > +	.has_clklane_stop = 1,
> > +	.num_clks = 2,
> > +	.max_freq = 1000,
> > +	.wait_for_reset = 1,
> > +	.num_bits_resol = 11,
> > +	.reg_values = reg_values,
> > +	.host_ops = &exynos_dsi_host_ops,
> > +};
> >  
> > -static const struct drm_connector_funcs exynos_dsi_connector_funcs = {
> > -	.detect = exynos_dsi_detect,
> > -	.fill_modes = drm_helper_probe_single_connector_modes,
> > -	.destroy = exynos_dsi_connector_destroy,
> > -	.reset = drm_atomic_helper_connector_reset,
> > -	.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> > -	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> > +static const struct samsung_dsim_driver_data exynos4_dsi_driver_data = {
> > +	.reg_ofs = EXYNOS_REG_OFS,
> > +	.plltmr_reg = 0x50,
> > +	.has_freqband = 1,
> > +	.has_clklane_stop = 1,
> > +	.num_clks = 2,
> > +	.max_freq = 1000,
> > +	.wait_for_reset = 1,
> > +	.num_bits_resol = 11,
> > +	.reg_values = reg_values,
> > +	.host_ops = &exynos_dsi_host_ops,
> >  };
> >  
> > -static int exynos_dsi_get_modes(struct drm_connector *connector)
> > -{
> > -	struct exynos_dsi *dsi = connector_to_dsi(connector);
> > +static const struct samsung_dsim_driver_data exynos5_dsi_driver_data = {
> > +	.reg_ofs = EXYNOS_REG_OFS,
> > +	.plltmr_reg = 0x58,
> > +	.num_clks = 2,
> > +	.max_freq = 1000,
> > +	.wait_for_reset = 1,
> > +	.num_bits_resol = 11,
> > +	.reg_values = reg_values,
> > +	.host_ops = &exynos_dsi_host_ops,
> > +};
> >  
> > -	if (dsi->panel)
> > -		return drm_panel_get_modes(dsi->panel, connector);
> > +static const struct samsung_dsim_driver_data exynos5433_dsi_driver_data = {
> > +	.reg_ofs = EXYNOS5433_REG_OFS,
> > +	.plltmr_reg = 0xa0,
> > +	.has_clklane_stop = 1,
> > +	.num_clks = 5,
> > +	.max_freq = 1500,
> > +	.wait_for_reset = 0,
> > +	.num_bits_resol = 12,
> > +	.reg_values = exynos5433_reg_values,
> > +	.host_ops = &exynos_dsi_host_ops,
> > +};
> >  
> > -	return 0;
> > -}
> > +static const struct samsung_dsim_driver_data exynos5422_dsi_driver_data = {
> > +	.reg_ofs = EXYNOS5433_REG_OFS,
> > +	.plltmr_reg = 0xa0,
> > +	.has_clklane_stop = 1,
> > +	.num_clks = 2,
> > +	.max_freq = 1500,
> > +	.wait_for_reset = 1,
> > +	.num_bits_resol = 12,
> > +	.reg_values = exynos5422_reg_values,
> > +	.host_ops = &exynos_dsi_host_ops,
> > +};
> >  
> > -static const struct drm_connector_helper_funcs exynos_dsi_connector_helper_funcs = {
> > -	.get_modes = exynos_dsi_get_modes,
> > +static const struct of_device_id exynos_dsi_of_match[] = {
> > +	{ .compatible = "samsung,exynos3250-mipi-dsi",
> > +	  .data = &exynos3_dsi_driver_data },
> > +	{ .compatible = "samsung,exynos4210-mipi-dsi",
> > +	  .data = &exynos4_dsi_driver_data },
> > +	{ .compatible = "samsung,exynos5410-mipi-dsi",
> > +	  .data = &exynos5_dsi_driver_data },
> > +	{ .compatible = "samsung,exynos5422-mipi-dsi",
> > +	  .data = &exynos5422_dsi_driver_data },
> > +	{ .compatible = "samsung,exynos5433-mipi-dsi",
> > +	  .data = &exynos5433_dsi_driver_data },
> > +	{ }
> >  };
> >  
> > -static int exynos_dsi_create_connector(struct exynos_dsi *dsi)
> > +static int exynos_dsi_bind(struct device *dev,
> > +			   struct device *master, void *data)
> >  {
> > -	struct drm_connector *connector = &dsi->connector;
> > -	struct drm_device *drm = dsi->bridge.dev;
> > +	struct exynos_dsi *dsi = dev_get_drvdata(dev);
> > +	struct drm_encoder *encoder = &dsi->encoder;
> > +	struct drm_device *drm_dev = data;
> > +	struct device_node *in_bridge_node;
> > +	struct drm_bridge *in_bridge;
> >  	int ret;
> >  
> > -	connector->polled = DRM_CONNECTOR_POLL_HPD;
> > +	drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
> >  
> > -	ret = drm_connector_init(drm, connector, &exynos_dsi_connector_funcs,
> > -				 DRM_MODE_CONNECTOR_DSI);
> > -	if (ret) {
> > -		DRM_DEV_ERROR(dsi->dev,
> > -			      "Failed to initialize connector with drm\n");
> > +	ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
> > +	if (ret < 0)
> >  		return ret;
> > -	}
> > -
> > -	connector->status = connector_status_disconnected;
> > -	drm_connector_helper_add(connector, &exynos_dsi_connector_helper_funcs);
> > -	drm_connector_attach_encoder(connector, dsi->bridge.encoder);
> > -	if (!drm->registered)
> > -		return 0;
> > -
> > -	connector->funcs->reset(connector);
> > -	drm_connector_register(connector);
> > -	return 0;
> > -}
> > -
> > -static int exynos_dsi_bridge_attach(struct drm_bridge *bridge,
> > -				    enum drm_bridge_attach_flags flags)
> > -{
> > -	struct exynos_dsi *dsi = bridge->driver_private;
> > -	struct drm_encoder *encoder = bridge->encoder;
> > -	int ret;
> > -
> > -	if (!dsi->out_bridge && !dsi->panel)
> > -		return -EPROBE_DEFER;
> > -
> > -	if (dsi->out_bridge) {
> > -		ret = drm_bridge_attach(encoder, dsi->out_bridge,
> > -					bridge, flags);
> > -		if (ret)
> > -			return ret;
> > -		list_splice_init(&encoder->bridge_chain, &dsi->bridge_chain);
> > -	} else {
> > -		ret = exynos_dsi_create_connector(dsi);
> > -		if (ret)
> > -			return ret;
> > -
> > -		if (dsi->panel) {
> > -			dsi->connector.status = connector_status_connected;
> > -		}
> > -	}
> >  
> > -	return 0;
> > -}
> > -
> > -static void exynos_dsi_bridge_detach(struct drm_bridge *bridge)
> > -{
> > -	struct exynos_dsi *dsi = bridge->driver_private;
> > -	struct drm_encoder *encoder = bridge->encoder;
> > -	struct drm_device *drm = encoder->dev;
> > -
> > -	if (dsi->panel) {
> > -		mutex_lock(&drm->mode_config.mutex);
> > -		exynos_dsi_disable(dsi);
> > -		dsi->panel = NULL;
> > -		dsi->connector.status = connector_status_disconnected;
> > -		mutex_unlock(&drm->mode_config.mutex);
> > -	} else {
> > -		if (dsi->out_bridge->funcs->detach)
> > -			dsi->out_bridge->funcs->detach(dsi->out_bridge);
> > -		dsi->out_bridge = NULL;
> > -		INIT_LIST_HEAD(&dsi->bridge_chain);
> > +	in_bridge_node = of_graph_get_remote_node(dev->of_node, DSI_PORT_IN, 0);
> > +	if (in_bridge_node) {
> > +		in_bridge = of_drm_find_bridge(in_bridge_node);
> > +		if (in_bridge)
> > +			drm_bridge_attach(encoder, in_bridge, NULL, 0);
> > +		of_node_put(in_bridge_node);
> >  	}
> > -}
> > -
> > -static void exynos_dsi_bridge_enable(struct drm_bridge *bridge)
> > -{
> > -	struct exynos_dsi *dsi = bridge->driver_private;
> > -
> > -	exynos_dsi_enable(dsi);
> > -}
> > -
> > -static void exynos_dsi_bridge_disable(struct drm_bridge *bridge)
> > -{
> > -	struct exynos_dsi *dsi = bridge->driver_private;
> > -
> > -	exynos_dsi_disable(dsi);
> > -}
> >  
> > -static void exynos_dsi_bridge_mode_set(struct drm_bridge *bridge,
> > -				       const struct drm_display_mode *mode,
> > -				       const struct drm_display_mode *adjusted_mode)
> > -{
> > -	struct exynos_dsi *dsi = bridge->driver_private;
> > -
> > -	/* The mode is set when actually enabling the device. */
> > -	drm_mode_copy(&dsi->mode, adjusted_mode);
> > -}
> > -
> > -static const struct drm_bridge_funcs exynos_dsi_bridge_funcs = {
> > -	.attach = exynos_dsi_bridge_attach,
> > -	.detach = exynos_dsi_bridge_detach,
> > -	.enable = exynos_dsi_bridge_enable,
> > -	.disable = exynos_dsi_bridge_disable,
> > -	.mode_set = exynos_dsi_bridge_mode_set,
> > -};
> > -
> > -static int exynos_dsi_host_attach(struct mipi_dsi_host *host,
> > -				  struct mipi_dsi_device *device)
> > -{
> > -	struct exynos_dsi *dsi = host_to_dsi(host);
> > -	const struct exynos_dsi_host_ops *ops = dsi->driver_data->host_ops;
> > -	struct drm_bridge *out_bridge;
> > -
> > -	out_bridge = of_drm_find_bridge(device->dev.of_node);
> > -	if (out_bridge) {
> > -		dsi->out_bridge = out_bridge;
> > -	} else {
> > -		dsi->panel = of_drm_find_panel(device->dev.of_node);
> > -		if (IS_ERR(dsi->panel))
> > -			dsi->panel = NULL;
> > -		else
> > -			dsi->connector.status = connector_status_connected;
> > -	}
> > -
> > -	/*
> > -	 * This is a temporary solution and should be made by more generic way.
> > -	 *
> > -	 * If attached panel device is for command mode one, dsi should register
> > -	 * TE interrupt handler.
> > -	 */
> > -	if (!(device->mode_flags & MIPI_DSI_MODE_VIDEO)) {
> > -		int ret = exynos_dsi_register_te_irq(dsi, &device->dev);
> > -		if (ret)
> > -			return ret;
> > -	}
> > -
> > -	dsi->lanes = device->lanes;
> > -	dsi->format = device->format;
> > -	dsi->mode_flags = device->mode_flags;
> > -
> > -	if (ops && ops->attach)
> > -		ops->attach(dsi->dsi_host.dev, device);
> > +	ret = samsung_dsim_bind(dsi->dsi, encoder);
> > +	if (ret)
> > +		goto err;
> >  
> >  	return 0;
> > -}
> > -
> > -static int exynos_dsi_host_detach(struct mipi_dsi_host *host,
> > -				  struct mipi_dsi_device *device)
> > -{
> > -	struct exynos_dsi *dsi = host_to_dsi(host);
> > -	const struct exynos_dsi_host_ops *ops = dsi->driver_data->host_ops;
> >  
> > -	if (ops && ops->detach)
> > -		ops->detach(dsi->dsi_host.dev, device);
> > -
> > -	exynos_dsi_unregister_te_irq(dsi);
> > -
> > -	return 0;
> > +err:
> > +	drm_encoder_cleanup(encoder);
> > +	return ret;
> >  }
> >  
> > -static ssize_t exynos_dsi_host_transfer(struct mipi_dsi_host *host,
> > -					 const struct mipi_dsi_msg *msg)
> > +static void exynos_dsi_unbind(struct device *dev,
> > +			      struct device *master, void *data)
> >  {
> > -	struct exynos_dsi *dsi = host_to_dsi(host);
> > -	struct exynos_dsi_transfer xfer;
> > -	int ret;
> > +	struct exynos_dsi *dsi = dev_get_drvdata(dev);
> > +	struct drm_encoder *encoder = &dsi->encoder;
> >  
> > -	if (!(dsi->state & DSIM_STATE_ENABLED))
> > -		return -EINVAL;
> > -
> > -	if (!(dsi->state & DSIM_STATE_INITIALIZED)) {
> > -		ret = exynos_dsi_init(dsi);
> > -		if (ret)
> > -			return ret;
> > -		dsi->state |= DSIM_STATE_INITIALIZED;
> > -	}
> > -
> > -	ret = mipi_dsi_create_packet(&xfer.packet, msg);
> > -	if (ret < 0)
> > -		return ret;
> > +	samsung_dsim_unbind(dsi->dsi);
> >  
> > -	xfer.rx_len = msg->rx_len;
> > -	xfer.rx_payload = msg->rx_buf;
> > -	xfer.flags = msg->flags;
> > -
> > -	ret = exynos_dsi_transfer(dsi, &xfer);
> > -	return (ret < 0) ? ret : xfer.rx_done;
> > +	drm_encoder_cleanup(encoder);
> >  }
> >  
> > -static const struct mipi_dsi_host_ops exynos_dsi_ops = {
> > -	.attach = exynos_dsi_host_attach,
> > -	.detach = exynos_dsi_host_detach,
> > -	.transfer = exynos_dsi_host_transfer,
> > +static const struct component_ops exynos_dsi_component_ops = {
> > +	.bind	= exynos_dsi_bind,
> > +	.unbind	= exynos_dsi_unbind,
> >  };
> >  
> > -static int exynos_dsi_of_read_u32(const struct device_node *np,
> > -				  const char *propname, u32 *out_value)
> > -{
> > -	int ret = of_property_read_u32(np, propname, out_value);
> > -
> > -	if (ret < 0)
> > -		pr_err("%pOF: failed to get '%s' property\n", np, propname);
> > -
> > -	return ret;
> > -}
> > -
> > -static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
> > -{
> > -	struct device *dev = dsi->dev;
> > -	struct device_node *node = dev->of_node;
> > -	int ret;
> > -
> > -	ret = exynos_dsi_of_read_u32(node, "samsung,pll-clock-frequency",
> > -				     &dsi->pll_clk_rate);
> > -	if (ret < 0)
> > -		return ret;
> > -
> > -	ret = exynos_dsi_of_read_u32(node, "samsung,burst-clock-frequency",
> > -				     &dsi->burst_clk_rate);
> > -	if (ret < 0)
> > -		return ret;
> > -
> > -	ret = exynos_dsi_of_read_u32(node, "samsung,esc-clock-frequency",
> > -				     &dsi->esc_clk_rate);
> > -	if (ret < 0)
> > -		return ret;
> > -
> > -	return 0;
> > -}
> > -
> > -static struct exynos_dsi *__exynos_dsi_probe(struct platform_device *pdev)
> > +static int exynos_dsi_probe(struct platform_device *pdev)
> >  {
> > -	struct device *dev = &pdev->dev;
> > -	struct drm_bridge *bridge;
> > -	struct resource *res;
> >  	struct exynos_dsi *dsi;
> > -	int ret, i;
> > +	struct device *dev = &pdev->dev;
> > +	int ret;
> >  
> >  	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
> >  	if (!dsi)
> > -		return ERR_PTR(-ENOMEM);
> > +		return -ENOMEM;
> > +	platform_set_drvdata(pdev, dsi);
> >  
> > -	/* To be checked as invalid one */
> > -	dsi->te_gpio = -ENOENT;
> > +	dsi->dsi = samsung_dsim_probe(pdev);
> > +	if (IS_ERR(dsi->dsi))
> > +		return PTR_ERR(dsi->dsi);
> >  
> > -	init_completion(&dsi->completed);
> > -	spin_lock_init(&dsi->transfer_lock);
> > -	INIT_LIST_HEAD(&dsi->transfer_list);
> > -	INIT_LIST_HEAD(&dsi->bridge_chain);
> > +	pm_runtime_enable(dev);
> >  
> > -	dsi->dsi_host.ops = &exynos_dsi_ops;
> > -	dsi->dsi_host.dev = dev;
> > -
> > -	dsi->dev = dev;
> > -	dsi->driver_data = of_device_get_match_data(dev);
> > -
> > -	dsi->supplies[0].supply = "vddcore";
> > -	dsi->supplies[1].supply = "vddio";
> > -	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(dsi->supplies),
> > -				      dsi->supplies);
> > -	if (ret) {
> > -		if (ret != -EPROBE_DEFER)
> > -			dev_info(dev, "failed to get regulators: %d\n", ret);
> > -		return ERR_PTR(ret);
> > -	}
> > -
> > -	dsi->clks = devm_kcalloc(dev,
> > -			dsi->driver_data->num_clks, sizeof(*dsi->clks),
> > -			GFP_KERNEL);
> > -	if (!dsi->clks)
> > -		return ERR_PTR(-ENOMEM);
> > -
> > -	for (i = 0; i < dsi->driver_data->num_clks; i++) {
> > -		dsi->clks[i] = devm_clk_get(dev, clk_names[i]);
> > -		if (IS_ERR(dsi->clks[i])) {
> > -			if (strcmp(clk_names[i], "sclk_mipi") == 0) {
> > -				dsi->clks[i] = devm_clk_get(dev,
> > -							OLD_SCLK_MIPI_CLK_NAME);
> > -				if (!IS_ERR(dsi->clks[i]))
> > -					continue;
> > -			}
> > -
> > -			dev_info(dev, "failed to get the clock: %s\n",
> > -					clk_names[i]);
> > -			return ERR_PTR(PTR_ERR(dsi->clks[i]));
> > -		}
> > -	}
> > -
> > -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > -	dsi->reg_base = devm_ioremap_resource(dev, res);
> > -	if (IS_ERR(dsi->reg_base)) {
> > -		dev_err(dev, "failed to remap io region\n");
> > -		return dsi->reg_base;
> > -	}
> > -
> > -	dsi->phy = devm_phy_get(dev, "dsim");
> > -	if (IS_ERR(dsi->phy)) {
> > -		dev_info(dev, "failed to get dsim phy\n");
> > -		return ERR_PTR(PTR_ERR(dsi->phy));
> > -	}
> > -
> > -	dsi->irq = platform_get_irq(pdev, 0);
> > -	if (dsi->irq < 0)
> > -		return ERR_PTR(dsi->irq);
> > -
> > -	irq_set_status_flags(dsi->irq, IRQ_NOAUTOEN);
> > -	ret = devm_request_threaded_irq(dev, dsi->irq, NULL,
> > -					exynos_dsi_irq, IRQF_ONESHOT,
> > -					dev_name(dev), dsi);
> > -	if (ret) {
> > -		dev_err(dev, "failed to request dsi irq\n");
> > -		return ERR_PTR(ret);
> > -	}
> > -
> > -	ret = exynos_dsi_parse_dt(dsi);
> > +	ret = component_add(dev, &exynos_dsi_component_ops);
> >  	if (ret)
> > -		return ERR_PTR(ret);
> > +		goto err_disable_runtime;
> >  
> > -	ret = mipi_dsi_host_register(&dsi->dsi_host);
> > -	if (ret)
> > -		return ERR_PTR(ret);
> > +	return 0;
> >  
> > -	bridge = &dsi->bridge;
> > -	bridge->driver_private = dsi;
> > -	bridge->funcs = &exynos_dsi_bridge_funcs;
> > -	bridge->of_node = dev->of_node;
> > -	drm_bridge_add(bridge);
> > +err_disable_runtime:
> > +	pm_runtime_disable(dev);
> >  
> > -	return dsi;
> > +	return ret;
> >  }
> >  
> > -static void __exynos_dsi_remove(struct exynos_dsi *dsi)
> > +static int exynos_dsi_remove(struct platform_device *pdev)
> >  {
> > -	drm_bridge_remove(&dsi->bridge);
> > +	struct exynos_dsi *dsi = platform_get_drvdata(pdev);
> >  
> > -	mipi_dsi_host_unregister(&dsi->dsi_host);
> > -}
> > -
> > -/*
> > - * Probe/remove API, used from platforms based on the DRM bridge API.
> > - */
> > -struct exynos_dsi *exynos_dsi_probe(struct platform_device *pdev)
> > -{
> > -	return __exynos_dsi_probe(pdev);
> > -}
> > +	pm_runtime_disable(&pdev->dev);
> >  
> > -void exynos_dsi_remove(struct exynos_dsi *dsi)
> > -{
> > -	return __exynos_dsi_remove(dsi);
> > -}
> > +	samsung_dsim_remove(dsi->dsi);
> >  
> > -/*
> > - * Bind/unbind API, used from platforms based on the component framework.
> > - */
> > -int exynos_dsi_bind(struct exynos_dsi *dsi, struct drm_encoder *encoder)
> > -{
> > -	struct drm_bridge *previous = drm_bridge_chain_get_first_bridge(encoder);
> > +	component_del(&pdev->dev, &exynos_dsi_component_ops);
> >  
> > -	return drm_bridge_attach(encoder, &dsi->bridge, previous, 0);
> > -}
> > -
> > -void exynos_dsi_unbind(struct exynos_dsi *dsi)
> > -{
> > -	exynos_dsi_disable(dsi);
> > +	return 0;
> >  }
> >  
> > -int exynos_dsi_suspend(struct exynos_dsi *dsi)
> > +static int __maybe_unused exynos_dsi_suspend(struct device *dev)
> >  {
> > -	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
> > -	int ret, i;
> > -
> > -	usleep_range(10000, 20000);
> > -
> > -	if (dsi->state & DSIM_STATE_INITIALIZED) {
> > -		dsi->state &= ~DSIM_STATE_INITIALIZED;
> > -
> > -		exynos_dsi_disable_clock(dsi);
> > -
> > -		exynos_dsi_disable_irq(dsi);
> > -	}
> > -
> > -	dsi->state &= ~DSIM_STATE_CMD_LPM;
> > -
> > -	phy_power_off(dsi->phy);
> > -
> > -	for (i = driver_data->num_clks - 1; i > -1; i--)
> > -		clk_disable_unprepare(dsi->clks[i]);
> > -
> > -	ret = regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies);
> > -	if (ret < 0)
> > -		dev_err(dsi->dev, "cannot disable regulators %d\n", ret);
> > +	struct exynos_dsi *dsi = dev_get_drvdata(dev);
> >  
> > -	return 0;
> > +	return samsung_dsim_suspend(dsi->dsi);
> >  }
> >  
> > -int exynos_dsi_resume(struct exynos_dsi *dsi)
> > +static int __maybe_unused exynos_dsi_resume(struct device *dev)
> >  {
> > -	const struct exynos_dsi_driver_data *driver_data = dsi->driver_data;
> > -	int ret, i;
> > -
> > -	ret = regulator_bulk_enable(ARRAY_SIZE(dsi->supplies), dsi->supplies);
> > -	if (ret < 0) {
> > -		dev_err(dsi->dev, "cannot enable regulators %d\n", ret);
> > -		return ret;
> > -	}
> > -
> > -	for (i = 0; i < driver_data->num_clks; i++) {
> > -		ret = clk_prepare_enable(dsi->clks[i]);
> > -		if (ret < 0)
> > -			goto err_clk;
> > -	}
> > -
> > -	ret = phy_power_on(dsi->phy);
> > -	if (ret < 0) {
> > -		dev_err(dsi->dev, "cannot enable phy %d\n", ret);
> > -		goto err_clk;
> > -	}
> > +	struct exynos_dsi *dsi = dev_get_drvdata(dev);
> >  
> > -	return 0;
> > +	return samsung_dsim_resume(dsi->dsi);
> > +}
> >  
> > -err_clk:
> > -	while (--i > -1)
> > -		clk_disable_unprepare(dsi->clks[i]);
> > -	regulator_bulk_disable(ARRAY_SIZE(dsi->supplies), dsi->supplies);
> > +static const struct dev_pm_ops exynos_dsi_pm_ops = {
> > +	SET_RUNTIME_PM_OPS(exynos_dsi_suspend, exynos_dsi_resume, NULL)
> > +	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> > +				pm_runtime_force_resume)
> > +};
> >  
> > -	return ret;
> > -}
> > +struct platform_driver dsi_driver = {
> > +	.probe = exynos_dsi_probe,
> > +	.remove = exynos_dsi_remove,
> > +	.driver = {
> > +		   .name = "exynos-dsi",
> > +		   .owner = THIS_MODULE,
> > +		   .pm = &exynos_dsi_pm_ops,
> > +		   .of_match_table = exynos_dsi_of_match,
> > +	},
> > +};
> >  
> >  MODULE_AUTHOR("Tomasz Figa <t.figa@xxxxxxxxxxx>");
> >  MODULE_AUTHOR("Andrzej Hajda <a.hajda@xxxxxxxxxxx>");
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi_pltfm.c b/drivers/gpu/drm/exynos/exynos_drm_dsi_pltfm.c
> > deleted file mode 100644
> > index 79d9ec6ade45..000000000000
> > --- a/drivers/gpu/drm/exynos/exynos_drm_dsi_pltfm.c
> > +++ /dev/null
> > @@ -1,333 +0,0 @@
> > -// SPDX-License-Identifier: GPL-2.0-only
> > -/*
> > - * Samsung SoC MIPI DSI Master driver.
> > - *
> > - * Copyright (c) 2014 Samsung Electronics Co., Ltd
> > - *
> > - * Contacts: Tomasz Figa <t.figa@xxxxxxxxxxx>
> > - */
> > -
> > -#include <linux/component.h>
> > -#include <linux/of_device.h>
> > -#include <linux/of_graph.h>
> > -#include <linux/pm_runtime.h>
> > -
> > -#include <drm/drm_bridge.h>
> > -#include <drm/drm_encoder.h>
> > -#include <drm/drm_mipi_dsi.h>
> > -#include <drm/drm_probe_helper.h>
> > -#include <drm/drm_simple_kms_helper.h>
> > -
> > -#include "exynos_drm_crtc.h"
> > -#include "exynos_drm_drv.h"
> > -#include "exynos_drm_dsi.h"
> > -
> > -enum {
> > -	DSI_PORT_IN,
> > -	DSI_PORT_OUT
> > -};
> > -
> > -struct exynos_dsi_pltfm {
> > -	struct exynos_dsi *dsi;
> > -	struct drm_encoder encoder;
> > -};
> > -
> > -static const unsigned int reg_values[] = {
> > -	[RESET_TYPE] = DSIM_SWRST,
> > -	[PLL_TIMER] = 500,
> > -	[STOP_STATE_CNT] = 0xf,
> > -	[PHYCTRL_ULPS_EXIT] = 0x0af,
> > -	[PHYCTRL_VREG_LP] = 0,
> > -	[PHYCTRL_SLEW_UP] = 0,
> > -	[PHYTIMING_LPX] = 0x06,
> > -	[PHYTIMING_HS_EXIT] = 0x0b,
> > -	[PHYTIMING_CLK_PREPARE] = 0x07,
> > -	[PHYTIMING_CLK_ZERO] = 0x27,
> > -	[PHYTIMING_CLK_POST] = 0x0d,
> > -	[PHYTIMING_CLK_TRAIL] = 0x08,
> > -	[PHYTIMING_HS_PREPARE] = 0x09,
> > -	[PHYTIMING_HS_ZERO] = 0x0d,
> > -	[PHYTIMING_HS_TRAIL] = 0x0b,
> > -};
> > -
> > -static const unsigned int exynos5422_reg_values[] = {
> > -	[RESET_TYPE] = DSIM_SWRST,
> > -	[PLL_TIMER] = 500,
> > -	[STOP_STATE_CNT] = 0xf,
> > -	[PHYCTRL_ULPS_EXIT] = 0xaf,
> > -	[PHYCTRL_VREG_LP] = 0,
> > -	[PHYCTRL_SLEW_UP] = 0,
> > -	[PHYTIMING_LPX] = 0x08,
> > -	[PHYTIMING_HS_EXIT] = 0x0d,
> > -	[PHYTIMING_CLK_PREPARE] = 0x09,
> > -	[PHYTIMING_CLK_ZERO] = 0x30,
> > -	[PHYTIMING_CLK_POST] = 0x0e,
> > -	[PHYTIMING_CLK_TRAIL] = 0x0a,
> > -	[PHYTIMING_HS_PREPARE] = 0x0c,
> > -	[PHYTIMING_HS_ZERO] = 0x11,
> > -	[PHYTIMING_HS_TRAIL] = 0x0d,
> > -};
> > -
> > -static const unsigned int exynos5433_reg_values[] = {
> > -	[RESET_TYPE] = DSIM_FUNCRST,
> > -	[PLL_TIMER] = 22200,
> > -	[STOP_STATE_CNT] = 0xa,
> > -	[PHYCTRL_ULPS_EXIT] = 0x190,
> > -	[PHYCTRL_VREG_LP] = 1,
> > -	[PHYCTRL_SLEW_UP] = 1,
> > -	[PHYTIMING_LPX] = 0x07,
> > -	[PHYTIMING_HS_EXIT] = 0x0c,
> > -	[PHYTIMING_CLK_PREPARE] = 0x09,
> > -	[PHYTIMING_CLK_ZERO] = 0x2d,
> > -	[PHYTIMING_CLK_POST] = 0x0e,
> > -	[PHYTIMING_CLK_TRAIL] = 0x09,
> > -	[PHYTIMING_HS_PREPARE] = 0x0b,
> > -	[PHYTIMING_HS_ZERO] = 0x10,
> > -	[PHYTIMING_HS_TRAIL] = 0x0c,
> > -};
> > -
> > -static int __exynos_dsi_host_attach(struct device *dev,
> > -				    struct mipi_dsi_device *device)
> > -{
> > -	struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
> > -	struct drm_device *drm = dsi->encoder.dev;
> > -	struct exynos_drm_crtc *crtc;
> > -
> > -	mutex_lock(&drm->mode_config.mutex);
> > -	crtc = exynos_drm_crtc_get_by_type(drm, EXYNOS_DISPLAY_TYPE_LCD);
> > -	crtc->i80_mode = !(device->mode_flags & MIPI_DSI_MODE_VIDEO);
> > -	mutex_unlock(&drm->mode_config.mutex);
> > -
> > -	if (drm->mode_config.poll_enabled)
> > -		drm_kms_helper_hotplug_event(drm);
> > -
> > -	return 0;
> > -}
> > -
> > -static int __exynos_dsi_host_detach(struct device *dev,
> > -				    struct mipi_dsi_device *device)
> > -{
> > -	struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
> > -	struct drm_device *drm = dsi->encoder.dev;
> > -
> > -	if (drm->mode_config.poll_enabled)
> > -		drm_kms_helper_hotplug_event(drm);
> > -
> > -	return 0;
> > -}
> > -
> > -static void __exynos_dsi_te_handler(struct device *dev)
> > -{
> > -	struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
> > -
> > -	exynos_drm_crtc_te_handler(dsi->encoder.crtc);
> > -}
> > -
> > -static const struct exynos_dsi_host_ops exynos_dsi_host_ops = {
> > -	.attach = __exynos_dsi_host_attach,
> > -	.detach = __exynos_dsi_host_detach,
> > -	.te_handler = __exynos_dsi_te_handler,
> > -};
> > -
> > -static const struct exynos_dsi_driver_data exynos3_dsi_driver_data = {
> > -	.reg_ofs = EXYNOS_REG_OFS,
> > -	.plltmr_reg = 0x50,
> > -	.has_freqband = 1,
> > -	.has_clklane_stop = 1,
> > -	.num_clks = 2,
> > -	.max_freq = 1000,
> > -	.wait_for_reset = 1,
> > -	.num_bits_resol = 11,
> > -	.reg_values = reg_values,
> > -	.host_ops = &exynos_dsi_host_ops,
> > -};
> > -
> > -static const struct exynos_dsi_driver_data exynos4_dsi_driver_data = {
> > -	.reg_ofs = EXYNOS_REG_OFS,
> > -	.plltmr_reg = 0x50,
> > -	.has_freqband = 1,
> > -	.has_clklane_stop = 1,
> > -	.num_clks = 2,
> > -	.max_freq = 1000,
> > -	.wait_for_reset = 1,
> > -	.num_bits_resol = 11,
> > -	.reg_values = reg_values,
> > -	.host_ops = &exynos_dsi_host_ops,
> > -};
> > -
> > -static const struct exynos_dsi_driver_data exynos5_dsi_driver_data = {
> > -	.reg_ofs = EXYNOS_REG_OFS,
> > -	.plltmr_reg = 0x58,
> > -	.num_clks = 2,
> > -	.max_freq = 1000,
> > -	.wait_for_reset = 1,
> > -	.num_bits_resol = 11,
> > -	.reg_values = reg_values,
> > -	.host_ops = &exynos_dsi_host_ops,
> > -};
> > -
> > -static const struct exynos_dsi_driver_data exynos5433_dsi_driver_data = {
> > -	.reg_ofs = EXYNOS5433_REG_OFS,
> > -	.plltmr_reg = 0xa0,
> > -	.has_clklane_stop = 1,
> > -	.num_clks = 5,
> > -	.max_freq = 1500,
> > -	.wait_for_reset = 0,
> > -	.num_bits_resol = 12,
> > -	.reg_values = exynos5433_reg_values,
> > -	.host_ops = &exynos_dsi_host_ops,
> > -};
> > -
> > -static const struct exynos_dsi_driver_data exynos5422_dsi_driver_data = {
> > -	.reg_ofs = EXYNOS5433_REG_OFS,
> > -	.plltmr_reg = 0xa0,
> > -	.has_clklane_stop = 1,
> > -	.num_clks = 2,
> > -	.max_freq = 1500,
> > -	.wait_for_reset = 1,
> > -	.num_bits_resol = 12,
> > -	.reg_values = exynos5422_reg_values,
> > -	.host_ops = &exynos_dsi_host_ops,
> > -};
> > -
> > -static const struct of_device_id exynos_dsi_of_match[] = {
> > -	{ .compatible = "samsung,exynos3250-mipi-dsi",
> > -	  .data = &exynos3_dsi_driver_data },
> > -	{ .compatible = "samsung,exynos4210-mipi-dsi",
> > -	  .data = &exynos4_dsi_driver_data },
> > -	{ .compatible = "samsung,exynos5410-mipi-dsi",
> > -	  .data = &exynos5_dsi_driver_data },
> > -	{ .compatible = "samsung,exynos5422-mipi-dsi",
> > -	  .data = &exynos5422_dsi_driver_data },
> > -	{ .compatible = "samsung,exynos5433-mipi-dsi",
> > -	  .data = &exynos5433_dsi_driver_data },
> > -	{ }
> > -};
> > -
> > -static int exynos_dsi_pltfm_bind(struct device *dev, struct device *master, void *data)
> > -{
> > -	struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
> > -	struct drm_encoder *encoder = &dsi->encoder;
> > -	struct drm_device *drm_dev = data;
> > -	struct device_node *in_bridge_node;
> > -	struct drm_bridge *in_bridge;
> > -	int ret;
> > -
> > -	drm_simple_encoder_init(drm_dev, encoder, DRM_MODE_ENCODER_TMDS);
> > -
> > -	ret = exynos_drm_set_possible_crtcs(encoder, EXYNOS_DISPLAY_TYPE_LCD);
> > -	if (ret < 0)
> > -		return ret;
> > -
> > -	in_bridge_node = of_graph_get_remote_node(dev->of_node, DSI_PORT_IN, 0);
> > -	if (in_bridge_node) {
> > -		in_bridge = of_drm_find_bridge(in_bridge_node);
> > -		if (in_bridge)
> > -			drm_bridge_attach(encoder, in_bridge, NULL, 0);
> > -		of_node_put(in_bridge_node);
> > -	}
> > -
> > -	ret = exynos_dsi_bind(dsi->dsi, encoder);
> > -	if (ret)
> > -		goto err;
> > -
> > -	return 0;
> > -
> > -err:
> > -	drm_encoder_cleanup(encoder);
> > -	return ret;
> > -}
> > -
> > -static void exynos_dsi_pltfm_unbind(struct device *dev, struct device *master,
> > -				    void *data)
> > -{
> > -	struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
> > -	struct drm_encoder *encoder = &dsi->encoder;
> > -
> > -	exynos_dsi_unbind(dsi->dsi);
> > -
> > -	drm_encoder_cleanup(encoder);
> > -}
> > -
> > -static const struct component_ops exynos_dsi_pltfm_component_ops = {
> > -	.bind	= exynos_dsi_pltfm_bind,
> > -	.unbind	= exynos_dsi_pltfm_unbind,
> > -};
> > -
> > -static int exynos_dsi_pltfm_probe(struct platform_device *pdev)
> > -{
> > -	struct exynos_dsi_pltfm *dsi;
> > -	struct device *dev = &pdev->dev;
> > -	int ret;
> > -
> > -	dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
> > -	if (!dsi)
> > -		return -ENOMEM;
> > -	platform_set_drvdata(pdev, dsi);
> > -
> > -	dsi->dsi = exynos_dsi_probe(pdev);
> > -	if (IS_ERR(dsi->dsi))
> > -		return PTR_ERR(dsi->dsi);
> > -
> > -	pm_runtime_enable(dev);
> > -
> > -	ret = component_add(dev, &exynos_dsi_pltfm_component_ops);
> > -	if (ret)
> > -		goto err_disable_runtime;
> > -
> > -	return 0;
> > -
> > -err_disable_runtime:
> > -	pm_runtime_disable(dev);
> > -
> > -	return ret;
> > -}
> > -
> > -static int exynos_dsi_pltfm_remove(struct platform_device *pdev)
> > -{
> > -	struct exynos_dsi_pltfm *dsi = platform_get_drvdata(pdev);
> > -
> > -	pm_runtime_disable(&pdev->dev);
> > -
> > -	exynos_dsi_remove(dsi->dsi);
> > -
> > -	component_del(&pdev->dev, &exynos_dsi_pltfm_component_ops);
> > -
> > -	return 0;
> > -}
> > -
> > -static int __maybe_unused exynos_dsi_pltfm_suspend(struct device *dev)
> > -{
> > -	struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
> > -
> > -	return exynos_dsi_suspend(dsi->dsi);
> > -}
> > -
> > -static int __maybe_unused exynos_dsi_pltfm_resume(struct device *dev)
> > -{
> > -	struct exynos_dsi_pltfm *dsi = dev_get_drvdata(dev);
> > -
> > -	return exynos_dsi_resume(dsi->dsi);
> > -}
> > -
> > -static const struct dev_pm_ops exynos_dsi_pm_ops = {
> > -	SET_RUNTIME_PM_OPS(exynos_dsi_pltfm_suspend, exynos_dsi_pltfm_resume, NULL)
> > -	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
> > -				pm_runtime_force_resume)
> > -};
> > -
> > -struct platform_driver dsi_driver = {
> > -	.probe = exynos_dsi_pltfm_probe,
> > -	.remove = exynos_dsi_pltfm_remove,
> > -	.driver = {
> > -		   .name = "exynos-dsi",
> > -		   .owner = THIS_MODULE,
> > -		   .pm = &exynos_dsi_pm_ops,
> > -		   .of_match_table = exynos_dsi_of_match,
> > -	},
> > -};
> > -
> > -MODULE_AUTHOR("Tomasz Figa <t.figa@xxxxxxxxxxx>");
> > -MODULE_AUTHOR("Andrzej Hajda <a.hajda@xxxxxxxxxxx>");
> > -MODULE_DESCRIPTION("Samsung SoC MIPI DSI Master");
> > -MODULE_LICENSE("GPL v2");
> > diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.h b/include/drm/bridge/samsung-dsim.h
> > similarity index 69%
> > rename from drivers/gpu/drm/exynos/exynos_drm_dsi.h
> > rename to include/drm/bridge/samsung-dsim.h
> > index 8fa3276889de..be8b4913aa9c 100644
> > --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.h
> > +++ b/include/drm/bridge/samsung-dsim.h
> > @@ -3,7 +3,7 @@
> >  #define __EXYNOS_DRM_DSI__
> >  
> >  struct drm_encoder;
> > -struct exynos_dsi;
> > +struct samsung_dsim;
> >  struct platform_device;
> >  struct mipi_dsi_device;
> >  
> > @@ -12,13 +12,13 @@ enum exynos_reg_offset {
> >  	EXYNOS5433_REG_OFS
> >  };
> >  
> > -struct exynos_dsi *exynos_dsi_probe(struct platform_device *pdev);
> > -void exynos_dsi_remove(struct exynos_dsi *dsi);
> > -int exynos_dsi_bind(struct exynos_dsi *dsi, struct drm_encoder *encoder);
> > -void exynos_dsi_unbind(struct exynos_dsi *dsi);
> > +struct samsung_dsim *samsung_dsim_probe(struct platform_device *pdev);
> > +void samsung_dsim_remove(struct samsung_dsim *dsi);
> > +int samsung_dsim_bind(struct samsung_dsim *dsi, struct drm_encoder *encoder);
> > +void samsung_dsim_unbind(struct samsung_dsim *dsi);
> >  
> > -int exynos_dsi_suspend(struct exynos_dsi *dsi);
> > -int exynos_dsi_resume(struct exynos_dsi *dsi);
> > +int samsung_dsim_suspend(struct samsung_dsim *dsi);
> > +int samsung_dsim_resume(struct samsung_dsim *dsi);
> >  
> >  enum reg_value_idx {
> >  	RESET_TYPE,
> > @@ -42,13 +42,13 @@ enum reg_value_idx {
> >  #define DSIM_FUNCRST			(1 << 16)
> >  #define DSIM_SWRST			(1 << 0)
> >  
> > -struct exynos_dsi_host_ops {
> > +struct samsung_dsim_host_ops {
> >  	int (*attach)(struct device *dev, struct mipi_dsi_device *device);
> >  	int (*detach)(struct device *dev, struct mipi_dsi_device *device);
> >  	void (*te_handler)(struct device *dev);
> >  };
> >  
> > -struct exynos_dsi_driver_data {
> > +struct samsung_dsim_driver_data {
> >  	enum exynos_reg_offset reg_ofs;
> >  	unsigned int plltmr_reg;
> >  	unsigned int has_freqband:1;
> > @@ -58,7 +58,7 @@ struct exynos_dsi_driver_data {
> >  	unsigned int wait_for_reset;
> >  	unsigned int num_bits_resol;
> >  	const unsigned int *reg_values;
> > -	const struct exynos_dsi_host_ops *host_ops;
> > +	const struct samsung_dsim_host_ops *host_ops;
> >  };
> >  
> >  #endif /* __EXYNOS_DRM_DSI__ */
> > -- 
> > 2.20.1
> > 
> > _______________________________________________
> > dri-devel mailing list
> > dri-devel@xxxxxxxxxxxxxxxxxxxxx
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
> 
> -- 
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
> 

-- 
Pengutronix e.K.                           | Michael Tretter             |
Steuerwalder Str. 21                       | https://www.pengutronix.de/ |
31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |
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