The LCD controller is composed of Frame Compression Processor (FCPVD), Video Signal Processor (VSPD), and Display Unit (DU). It has DPI/DSI interfaces and supports a maximum resolution of 1080p along with 2 RPFs to support the blending of two picture layers and raster operations (ROPs). The DU module is connected to VSPD. Add RZ/G2L DU support for RZ/G2L alike SoCs. Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> --- Ref: https://lore.kernel.org/linux-renesas-soc/OS0PR01MB5922717E4CCFE07F3C25FBC986989@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/#t v16->v17: * Dropped import_sg_table implementation() as we are using the helpers. * Dropped unused rzg2l_du_vsp_atomic_begin(). v15->v16: * Dropped rzg2l_du_crtc_get(rcrtc) from rzg2l_du_crtc_atomic_flush() as it is not needed by moving to drm_atomic_helper_commit_tail_rpm(). * Dropped destroy callback from struct drm_crtc_funcs * Replaced drm_crtc_init_with_planes()->drmm_crtc_init_with_planes() * Introduced rzg2l_du_vsp_get_drm_plane() to get primary plane compared to &rcrtc->vsp->planes[rcrtc->vsp_pipe].plane. * Replaced rzg2l_du_atomic_commit_tail()->drm_atomic_helper_commit_ tail_rpm() * Dropped the comment "older DT bindings" in rzg2l_du_vsps_init() * Dropped rzg2l_du_vsp_{map_fb,plane_prepare_fb,unmap_fb, plane_cleanup_fb} and instead using helpers. * Dropped prepare_fb and cleanup_fb callbacks from struct drm_plane_helper_funcs * Dropped destroy from struct drm_plane_funcs * Replaced drm_universal_plane_init()->drmm_universal_plane_alloc() * Dropped planes and num_planes variables from struct rzg2l_du_vsp * Dropped sg_tables variable from struct rzg2l_du_vsp_plane_state. v14->v15: * No change. v13->v14: * Done similar change like [1] * Replaced the label 'error'->'done' as it applies to non-error case as well. * Update the error check condition for rcar_du_vsp_init() to avoid breakage in future, if it returns positive value. [1] https://patchwork.kernel.org/project/linux-renesas-soc/patch/20231116122424.80136-1-biju.das.jz@xxxxxxxxxxxxxx/ v12->v13: * Dropped DU_MCR0_DPI_OE and unused macros. * Dropped unneeded backward compatibility with old DTBs as it is new driver. * Replaced "cells > 1"-> "cells != 1" in rzg2l_du_vsps_init(). * Fixed memory leak in rzg2l_du_vsps_init(). * Dropped drm_plane_create_{alpha,zpos,blend_mode}_property(). v11->v12: * Replaced rzg2l_du_write() with writel(). v10->v11: * Replaced CONFIG_DRM_RCAR_VSP->CONFIG_VIDEO_RENESAS_VSP1 for building rzg2l_du_vsp driver. * Dropped "rzg2l_du_regs.h" instead the relevant definitions defined in .c file. * Dropped setting ditr5 based on latest HW manual 1.3.0/1.4.0 * Updated the comment for auto clear. * Replaced writel()->rzg2l_du_write() in rzg2l_du_start_stop(). * Dropped CRC related functions as it does not have DISCOM. * Replaced the variable possible_crtcs->possible_outputs in struct rzg2l_du_output_routing. * Updated DMA_BIT_MASK from 40->32. * Dropped unneeded struct drm_bridge from rzg2l_du_drv.h. * Dropped colour keying support as it doesn't have planes. * Added only RGB formats in rzg2l_du_format_infos. * Dropped chroma planes from rzg2l_du_fb_create(). * Updated the comment for max_pitch in rzg2l_du_fb_create(). * Dropped possible_crtcs check in rzg2l_du_encoders_init(). * Dropped additional empty line from struct rzg2l_du_device. v9->v10: * Dropped ARM64 dependency from Kconfig. * Sorted the configs alphabetically in Kconfig. * Dropped DRM_RCAR_VSP config option and make DRM_RZG2L_DU depend on VIDEO_RENESAS_VSP1. * On rzg2l_du_crtc_set_display_timing() replaced the setting of parent clk rate with dclk rate. * Added rzg2l_du_write() wrapper function. * Updated the comment atomic_begin->atomic_flush. * Dropped .atomic_check and .atomic_begin callback * Renamed __rzg2l_du_crtc_plane_atomic_check->__rzg2l_du_vsp_plane_atomic _check and moved it to rzg2l_du_vsp.c * Added struct clk in rzg2l_du_crtc.h * Dropped the variables mmio_offset,index,vblank_lock,vblank_wait, vblank_count from struct rzg2l_du_crtc. * Replaced the macro to_rzg2l_crtc with static inline functions. * Dropped the unneeded header files clk.h, io.h, mm.h, pm.h, slab.h, wait.h and drm_managed.h from rzg2l_du_drv.c. * Replaced DRM_INFO->drm_info * Dropped the callbacks prime_handle_to_fd, prime_fd_to_handle and gem_prime_mmap. * Replaced the callback remove->remove_new. * Dropped header file wait.h and added forward declarations struct clk and rzg2l_du_device from rzg2l_du_drv.h. * Dropped the dsi and dpad0_source variables from struct rzg2l_du_device. * Replaced the macro to_rzg2l_encoder with static inline functions. * Dropped header files dma-buf.h and wait.h from rzg2l_du_kms.c. * Dropped struct sg_table and added the scatterlist.h header file in rzg2l_du_vsp.h * Added container_of.h header file, forward declarations struct device and struct rzg2l_du_device in rzg2l_du_vsp.h. v8->v9: * Dropped reset_control_assert() from error patch for rzg2l_du_crtc_get() as suggested by Philipp Zabel. v7->v8: * Dropped RCar du lib and created RZ/G2L DU DRM driver by creating rz_du folder. * Updated KConfig and Makefile. v6->v7: * Split DU lib and RZ/G2L du driver as separate patch series as DU support added to more platforms based on RZ/G2L alike SoCs. * Rebased to latest drm-tip. * Added patch #2 for binding support for RZ/V2L DU * Added patch #4 for driver support for RZ/V2L DU * Added patch #5 for SoC DTSI support for RZ/G2L DU * Added patch #6 for SoC DTSI support for RZ/V2L DU * Added patch #7 for Enabling DU on SMARC EVK based on RZ/{G2L,V2L} SoCs. * Added patch #8 for Enabling DU on SMARC EVK based on RZ/G2LC SoC. --- drivers/gpu/drm/renesas/Kconfig | 1 + drivers/gpu/drm/renesas/Makefile | 1 + drivers/gpu/drm/renesas/rz-du/Kconfig | 12 + drivers/gpu/drm/renesas/rz-du/Makefile | 8 + drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.c | 422 ++++++++++++++++++ drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.h | 89 ++++ drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c | 175 ++++++++ drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h | 78 ++++ .../gpu/drm/renesas/rz-du/rzg2l_du_encoder.c | 72 +++ .../gpu/drm/renesas/rz-du/rzg2l_du_encoder.h | 32 ++ drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c | 371 +++++++++++++++ drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.h | 43 ++ drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c | 349 +++++++++++++++ drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.h | 82 ++++ 14 files changed, 1735 insertions(+) create mode 100644 drivers/gpu/drm/renesas/rz-du/Kconfig create mode 100644 drivers/gpu/drm/renesas/rz-du/Makefile create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.c create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.h create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg2l_du_encoder.c create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg2l_du_encoder.h create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.h create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c create mode 100644 drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.h diff --git a/drivers/gpu/drm/renesas/Kconfig b/drivers/gpu/drm/renesas/Kconfig index 3777dad17f81..21862a8ef710 100644 --- a/drivers/gpu/drm/renesas/Kconfig +++ b/drivers/gpu/drm/renesas/Kconfig @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0-only source "drivers/gpu/drm/renesas/rcar-du/Kconfig" +source "drivers/gpu/drm/renesas/rz-du/Kconfig" source "drivers/gpu/drm/renesas/shmobile/Kconfig" diff --git a/drivers/gpu/drm/renesas/Makefile b/drivers/gpu/drm/renesas/Makefile index ec0e89e7a592..b8d8bc53967f 100644 --- a/drivers/gpu/drm/renesas/Makefile +++ b/drivers/gpu/drm/renesas/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 obj-y += rcar-du/ +obj-y += rz-du/ obj-$(CONFIG_DRM_SHMOBILE) += shmobile/ diff --git a/drivers/gpu/drm/renesas/rz-du/Kconfig b/drivers/gpu/drm/renesas/rz-du/Kconfig new file mode 100644 index 000000000000..5f0db2c5fee6 --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/Kconfig @@ -0,0 +1,12 @@ +# SPDX-License-Identifier: GPL-2.0 +config DRM_RZG2L_DU + tristate "DRM Support for RZ/G2L Display Unit" + depends on ARCH_RZG2L || COMPILE_TEST + depends on DRM && OF + depends on VIDEO_RENESAS_VSP1 + select DRM_GEM_DMA_HELPER + select DRM_KMS_HELPER + select VIDEOMODE_HELPERS + help + Choose this option if you have an RZ/G2L alike chipset. + If M is selected the module will be called rzg2l-du-drm. diff --git a/drivers/gpu/drm/renesas/rz-du/Makefile b/drivers/gpu/drm/renesas/rz-du/Makefile new file mode 100644 index 000000000000..663b82a2577f --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/Makefile @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-2.0 +rzg2l-du-drm-y := rzg2l_du_crtc.o \ + rzg2l_du_drv.o \ + rzg2l_du_encoder.o \ + rzg2l_du_kms.o \ + +rzg2l-du-drm-$(CONFIG_VIDEO_RENESAS_VSP1) += rzg2l_du_vsp.o +obj-$(CONFIG_DRM_RZG2L_DU) += rzg2l-du-drm.o diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.c new file mode 100644 index 000000000000..6e7aac6219be --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.c @@ -0,0 +1,422 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * RZ/G2L Display Unit CRTCs + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_crtc.c + */ + +#include <linux/clk.h> +#include <linux/mutex.h> +#include <linux/platform_device.h> +#include <linux/reset.h> + +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_bridge.h> +#include <drm/drm_crtc.h> +#include <drm/drm_device.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_gem_dma_helper.h> +#include <drm/drm_vblank.h> + +#include "rzg2l_du_crtc.h" +#include "rzg2l_du_drv.h" +#include "rzg2l_du_encoder.h" +#include "rzg2l_du_kms.h" +#include "rzg2l_du_vsp.h" + +#define DU_MCR0 0x00 +#define DU_MCR0_DI_EN BIT(8) + +#define DU_DITR0 0x10 +#define DU_DITR0_DEMD_HIGH (BIT(8) | BIT(9)) +#define DU_DITR0_VSPOL BIT(16) +#define DU_DITR0_HSPOL BIT(17) + +#define DU_DITR1 0x14 +#define DU_DITR1_VSA(x) ((x) << 0) +#define DU_DITR1_VACTIVE(x) ((x) << 16) + +#define DU_DITR2 0x18 +#define DU_DITR2_VBP(x) ((x) << 0) +#define DU_DITR2_VFP(x) ((x) << 16) + +#define DU_DITR3 0x1c +#define DU_DITR3_HSA(x) ((x) << 0) +#define DU_DITR3_HACTIVE(x) ((x) << 16) + +#define DU_DITR4 0x20 +#define DU_DITR4_HBP(x) ((x) << 0) +#define DU_DITR4_HFP(x) ((x) << 16) + +#define DU_MCR1 0x40 +#define DU_MCR1_PB_AUTOCLR BIT(16) + +#define DU_PBCR0 0x4c +#define DU_PBCR0_PB_DEP(x) ((x) << 0) + +/* ----------------------------------------------------------------------------- + * Hardware Setup + */ + +static void rzg2l_du_crtc_set_display_timing(struct rzg2l_du_crtc *rcrtc) +{ + const struct drm_display_mode *mode = &rcrtc->crtc.state->adjusted_mode; + unsigned long mode_clock = mode->clock * 1000; + u32 ditr0, ditr1, ditr2, ditr3, ditr4, pbcr0; + struct rzg2l_du_device *rcdu = rcrtc->dev; + + clk_prepare_enable(rcrtc->rzg2l_clocks.dclk); + clk_set_rate(rcrtc->rzg2l_clocks.dclk, mode_clock); + + ditr0 = (DU_DITR0_DEMD_HIGH + | ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? DU_DITR0_VSPOL : 0) + | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? DU_DITR0_HSPOL : 0)); + + ditr1 = DU_DITR1_VSA(mode->vsync_end - mode->vsync_start) + | DU_DITR1_VACTIVE(mode->vdisplay); + + ditr2 = DU_DITR2_VBP(mode->vtotal - mode->vsync_end) + | DU_DITR2_VFP(mode->vsync_start - mode->vdisplay); + + ditr3 = DU_DITR3_HSA(mode->hsync_end - mode->hsync_start) + | DU_DITR3_HACTIVE(mode->hdisplay); + + ditr4 = DU_DITR4_HBP(mode->htotal - mode->hsync_end) + | DU_DITR4_HFP(mode->hsync_start - mode->hdisplay); + + pbcr0 = DU_PBCR0_PB_DEP(0x1f); + + writel(ditr0, rcdu->mmio + DU_DITR0); + writel(ditr1, rcdu->mmio + DU_DITR1); + writel(ditr2, rcdu->mmio + DU_DITR2); + writel(ditr3, rcdu->mmio + DU_DITR3); + writel(ditr4, rcdu->mmio + DU_DITR4); + writel(pbcr0, rcdu->mmio + DU_PBCR0); + + /* Enable auto clear */ + writel(DU_MCR1_PB_AUTOCLR, rcdu->mmio + DU_MCR1); +} + +/* ----------------------------------------------------------------------------- + * Page Flip + */ + +void rzg2l_du_crtc_finish_page_flip(struct rzg2l_du_crtc *rcrtc) +{ + struct drm_pending_vblank_event *event; + struct drm_device *dev = rcrtc->crtc.dev; + unsigned long flags; + + spin_lock_irqsave(&dev->event_lock, flags); + event = rcrtc->event; + rcrtc->event = NULL; + spin_unlock_irqrestore(&dev->event_lock, flags); + + if (!event) + return; + + spin_lock_irqsave(&dev->event_lock, flags); + drm_crtc_send_vblank_event(&rcrtc->crtc, event); + wake_up(&rcrtc->flip_wait); + spin_unlock_irqrestore(&dev->event_lock, flags); + + drm_crtc_vblank_put(&rcrtc->crtc); +} + +static bool rzg2l_du_crtc_page_flip_pending(struct rzg2l_du_crtc *rcrtc) +{ + struct drm_device *dev = rcrtc->crtc.dev; + unsigned long flags; + bool pending; + + spin_lock_irqsave(&dev->event_lock, flags); + pending = rcrtc->event; + spin_unlock_irqrestore(&dev->event_lock, flags); + + return pending; +} + +static void rzg2l_du_crtc_wait_page_flip(struct rzg2l_du_crtc *rcrtc) +{ + struct rzg2l_du_device *rcdu = rcrtc->dev; + + if (wait_event_timeout(rcrtc->flip_wait, + !rzg2l_du_crtc_page_flip_pending(rcrtc), + msecs_to_jiffies(50))) + return; + + dev_warn(rcdu->dev, "page flip timeout\n"); + + rzg2l_du_crtc_finish_page_flip(rcrtc); +} + +/* ----------------------------------------------------------------------------- + * Start/Stop and Suspend/Resume + */ + +static void rzg2l_du_crtc_setup(struct rzg2l_du_crtc *rcrtc) +{ + /* Configure display timings and output routing */ + rzg2l_du_crtc_set_display_timing(rcrtc); + + /* Enable the VSP compositor. */ + rzg2l_du_vsp_enable(rcrtc); + + /* Turn vertical blanking interrupt reporting on. */ + drm_crtc_vblank_on(&rcrtc->crtc); +} + +static int rzg2l_du_crtc_get(struct rzg2l_du_crtc *rcrtc) +{ + int ret; + + /* + * Guard against double-get, as the function is called from both the + * .atomic_enable() and .atomic_flush() handlers. + */ + if (rcrtc->initialized) + return 0; + + ret = clk_prepare_enable(rcrtc->rzg2l_clocks.aclk); + if (ret < 0) + return ret; + + ret = clk_prepare_enable(rcrtc->rzg2l_clocks.pclk); + if (ret < 0) + goto error_bus_clock; + + ret = reset_control_deassert(rcrtc->rstc); + if (ret < 0) + goto error_peri_clock; + + rzg2l_du_crtc_setup(rcrtc); + rcrtc->initialized = true; + + return 0; + +error_peri_clock: + clk_disable_unprepare(rcrtc->rzg2l_clocks.pclk); +error_bus_clock: + clk_disable_unprepare(rcrtc->rzg2l_clocks.aclk); + return ret; +} + +static void rzg2l_du_crtc_put(struct rzg2l_du_crtc *rcrtc) +{ + clk_disable_unprepare(rcrtc->rzg2l_clocks.dclk); + reset_control_assert(rcrtc->rstc); + clk_disable_unprepare(rcrtc->rzg2l_clocks.pclk); + clk_disable_unprepare(rcrtc->rzg2l_clocks.aclk); + + rcrtc->initialized = false; +} + +static void rzg2l_du_start_stop(struct rzg2l_du_crtc *rcrtc, bool start) +{ + struct rzg2l_du_device *rcdu = rcrtc->dev; + + writel(start ? DU_MCR0_DI_EN : 0, rcdu->mmio + DU_MCR0); +} + +static void rzg2l_du_crtc_start(struct rzg2l_du_crtc *rcrtc) +{ + rzg2l_du_start_stop(rcrtc, true); +} + +static void rzg2l_du_crtc_stop(struct rzg2l_du_crtc *rcrtc) +{ + struct drm_crtc *crtc = &rcrtc->crtc; + + /* + * Disable vertical blanking interrupt reporting. We first need to wait + * for page flip completion before stopping the CRTC as userspace + * expects page flips to eventually complete. + */ + rzg2l_du_crtc_wait_page_flip(rcrtc); + drm_crtc_vblank_off(crtc); + + /* Disable the VSP compositor. */ + rzg2l_du_vsp_disable(rcrtc); + + rzg2l_du_start_stop(rcrtc, false); +} + +/* ----------------------------------------------------------------------------- + * CRTC Functions + */ + +static void rzg2l_du_crtc_atomic_enable(struct drm_crtc *crtc, + struct drm_atomic_state *state) +{ + struct rzg2l_du_crtc *rcrtc = to_rzg2l_crtc(crtc); + + rzg2l_du_crtc_get(rcrtc); + + rzg2l_du_crtc_start(rcrtc); +} + +static void rzg2l_du_crtc_atomic_disable(struct drm_crtc *crtc, + struct drm_atomic_state *state) +{ + struct rzg2l_du_crtc *rcrtc = to_rzg2l_crtc(crtc); + + rzg2l_du_crtc_stop(rcrtc); + rzg2l_du_crtc_put(rcrtc); + + spin_lock_irq(&crtc->dev->event_lock); + if (crtc->state->event) { + drm_crtc_send_vblank_event(crtc, crtc->state->event); + crtc->state->event = NULL; + } + spin_unlock_irq(&crtc->dev->event_lock); +} + +static void rzg2l_du_crtc_atomic_flush(struct drm_crtc *crtc, + struct drm_atomic_state *state) +{ + struct rzg2l_du_crtc *rcrtc = to_rzg2l_crtc(crtc); + struct drm_device *dev = rcrtc->crtc.dev; + unsigned long flags; + + WARN_ON(!crtc->state->enable); + + if (crtc->state->event) { + WARN_ON(drm_crtc_vblank_get(crtc) != 0); + + spin_lock_irqsave(&dev->event_lock, flags); + rcrtc->event = crtc->state->event; + crtc->state->event = NULL; + spin_unlock_irqrestore(&dev->event_lock, flags); + } + + rzg2l_du_vsp_atomic_flush(rcrtc); +} + +static const struct drm_crtc_helper_funcs crtc_helper_funcs = { + .atomic_flush = rzg2l_du_crtc_atomic_flush, + .atomic_enable = rzg2l_du_crtc_atomic_enable, + .atomic_disable = rzg2l_du_crtc_atomic_disable, +}; + +static struct drm_crtc_state * +rzg2l_du_crtc_atomic_duplicate_state(struct drm_crtc *crtc) +{ + struct rzg2l_du_crtc_state *state; + struct rzg2l_du_crtc_state *copy; + + if (WARN_ON(!crtc->state)) + return NULL; + + state = to_rzg2l_crtc_state(crtc->state); + copy = kmemdup(state, sizeof(*state), GFP_KERNEL); + if (!copy) + return NULL; + + __drm_atomic_helper_crtc_duplicate_state(crtc, ©->state); + + return ©->state; +} + +static void rzg2l_du_crtc_atomic_destroy_state(struct drm_crtc *crtc, + struct drm_crtc_state *state) +{ + __drm_atomic_helper_crtc_destroy_state(state); + kfree(to_rzg2l_crtc_state(state)); +} + +static void rzg2l_du_crtc_reset(struct drm_crtc *crtc) +{ + struct rzg2l_du_crtc_state *state; + + if (crtc->state) { + rzg2l_du_crtc_atomic_destroy_state(crtc, crtc->state); + crtc->state = NULL; + } + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return; + + __drm_atomic_helper_crtc_reset(crtc, &state->state); +} + +static int rzg2l_du_crtc_enable_vblank(struct drm_crtc *crtc) +{ + struct rzg2l_du_crtc *rcrtc = to_rzg2l_crtc(crtc); + + rcrtc->vblank_enable = true; + + return 0; +} + +static void rzg2l_du_crtc_disable_vblank(struct drm_crtc *crtc) +{ + struct rzg2l_du_crtc *rcrtc = to_rzg2l_crtc(crtc); + + rcrtc->vblank_enable = false; +} + +static const struct drm_crtc_funcs crtc_funcs_rz = { + .reset = rzg2l_du_crtc_reset, + .set_config = drm_atomic_helper_set_config, + .page_flip = drm_atomic_helper_page_flip, + .atomic_duplicate_state = rzg2l_du_crtc_atomic_duplicate_state, + .atomic_destroy_state = rzg2l_du_crtc_atomic_destroy_state, + .enable_vblank = rzg2l_du_crtc_enable_vblank, + .disable_vblank = rzg2l_du_crtc_disable_vblank, +}; + +/* ----------------------------------------------------------------------------- + * Initialization + */ + +int rzg2l_du_crtc_create(struct rzg2l_du_device *rcdu) +{ + struct rzg2l_du_crtc *rcrtc = &rcdu->crtcs[0]; + struct drm_crtc *crtc = &rcrtc->crtc; + struct drm_plane *primary; + int ret; + + rcrtc->rstc = devm_reset_control_get_shared(rcdu->dev, NULL); + if (IS_ERR(rcrtc->rstc)) { + dev_err(rcdu->dev, "can't get cpg reset\n"); + return PTR_ERR(rcrtc->rstc); + } + + rcrtc->rzg2l_clocks.aclk = devm_clk_get(rcdu->dev, "aclk"); + if (IS_ERR(rcrtc->rzg2l_clocks.aclk)) { + dev_err(rcdu->dev, "no axi clock for DU\n"); + return PTR_ERR(rcrtc->rzg2l_clocks.aclk); + } + + rcrtc->rzg2l_clocks.pclk = devm_clk_get(rcdu->dev, "pclk"); + if (IS_ERR(rcrtc->rzg2l_clocks.pclk)) { + dev_err(rcdu->dev, "no peripheral clock for DU\n"); + return PTR_ERR(rcrtc->rzg2l_clocks.pclk); + } + + rcrtc->rzg2l_clocks.dclk = devm_clk_get(rcdu->dev, "vclk"); + if (IS_ERR(rcrtc->rzg2l_clocks.dclk)) { + dev_err(rcdu->dev, "no video clock for DU\n"); + return PTR_ERR(rcrtc->rzg2l_clocks.dclk); + } + + init_waitqueue_head(&rcrtc->flip_wait); + rcrtc->dev = rcdu; + + primary = rzg2l_du_vsp_get_drm_plane(rcrtc, rcrtc->vsp_pipe); + if (IS_ERR(primary)) + return PTR_ERR(primary); + + ret = drmm_crtc_init_with_planes(&rcdu->ddev, crtc, primary, NULL, + &crtc_funcs_rz, NULL); + if (ret < 0) + return ret; + + drm_crtc_helper_add(crtc, &crtc_helper_funcs); + + return 0; +} diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.h b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.h new file mode 100644 index 000000000000..cbba38acc377 --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_crtc.h @@ -0,0 +1,89 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * RZ/G2L Display Unit CRTCs + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_crtc.h + */ + +#ifndef __RZG2L_DU_CRTC_H__ +#define __RZG2L_DU_CRTC_H__ + +#include <linux/container_of.h> +#include <linux/mutex.h> +#include <linux/spinlock.h> +#include <linux/wait.h> + +#include <drm/drm_crtc.h> +#include <drm/drm_writeback.h> + +#include <media/vsp1.h> + +struct clk; +struct reset_control; +struct rzg2l_du_vsp; +struct rzg2l_du_format_info; + +/** + * struct rzg2l_du_crtc - the CRTC, representing a DU superposition processor + * @crtc: base DRM CRTC + * @dev: the DU device + * @initialized: whether the CRTC has been initialized and clocks enabled + * @vblank_enable: whether vblank events are enabled on this CRTC + * @event: event to post when the pending page flip completes + * @flip_wait: wait queue used to signal page flip completion + * @vsp: VSP feeding video to this CRTC + * @vsp_pipe: index of the VSP pipeline feeding video to this CRTC + * @rstc: reset controller + * @rzg2l_clocks: the bus, main and video clock + */ +struct rzg2l_du_crtc { + struct drm_crtc crtc; + + struct rzg2l_du_device *dev; + bool initialized; + + bool vblank_enable; + struct drm_pending_vblank_event *event; + wait_queue_head_t flip_wait; + + struct rzg2l_du_vsp *vsp; + unsigned int vsp_pipe; + + const char *const *sources; + unsigned int sources_count; + + struct reset_control *rstc; + struct { + struct clk *aclk; + struct clk *pclk; + struct clk *dclk; + } rzg2l_clocks; +}; + +static inline struct rzg2l_du_crtc *to_rzg2l_crtc(struct drm_crtc *c) +{ + return container_of(c, struct rzg2l_du_crtc, crtc); +} + +/** + * struct rzg2l_du_crtc_state - Driver-specific CRTC state + * @state: base DRM CRTC state + * @outputs: bitmask of the outputs (enum rzg2l_du_output) driven by this CRTC + */ +struct rzg2l_du_crtc_state { + struct drm_crtc_state state; + unsigned int outputs; +}; + +static inline struct rzg2l_du_crtc_state *to_rzg2l_crtc_state(struct drm_crtc_state *s) +{ + return container_of(s, struct rzg2l_du_crtc_state, state); +} + +int rzg2l_du_crtc_create(struct rzg2l_du_device *rcdu); + +void rzg2l_du_crtc_finish_page_flip(struct rzg2l_du_crtc *rcrtc); + +#endif /* __RZG2L_DU_CRTC_H__ */ diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c new file mode 100644 index 000000000000..470d34da1d6c --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c @@ -0,0 +1,175 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * RZ/G2L Display Unit DRM driver + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_drv.c + */ + +#include <linux/dma-mapping.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_drv.h> +#include <drm/drm_fbdev_generic.h> +#include <drm/drm_gem_dma_helper.h> +#include <drm/drm_probe_helper.h> + +#include "rzg2l_du_drv.h" +#include "rzg2l_du_kms.h" + +/* ----------------------------------------------------------------------------- + * Device Information + */ + +static const struct rzg2l_du_device_info rzg2l_du_r9a07g044_info = { + .channels_mask = BIT(0), + .routes = { + [RZG2L_DU_OUTPUT_DSI0] = { + .possible_outputs = BIT(0), + .port = 0, + }, + [RZG2L_DU_OUTPUT_DPAD0] = { + .possible_outputs = BIT(0), + .port = 1, + } + } +}; + +static const struct of_device_id rzg2l_du_of_table[] = { + { .compatible = "renesas,r9a07g044-du", .data = &rzg2l_du_r9a07g044_info }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, rzg2l_du_of_table); + +const char *rzg2l_du_output_name(enum rzg2l_du_output output) +{ + static const char * const names[] = { + [RZG2L_DU_OUTPUT_DSI0] = "DSI0", + [RZG2L_DU_OUTPUT_DPAD0] = "DPAD0" + }; + + if (output >= ARRAY_SIZE(names)) + return "UNKNOWN"; + + return names[output]; +} + +/* ----------------------------------------------------------------------------- + * DRM operations + */ + +DEFINE_DRM_GEM_DMA_FOPS(rzg2l_du_fops); + +static const struct drm_driver rzg2l_du_driver = { + .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, + .dumb_create = rzg2l_du_dumb_create, + .fops = &rzg2l_du_fops, + .name = "rzg2l-du", + .desc = "Renesas RZ/G2L Display Unit", + .date = "20230410", + .major = 1, + .minor = 0, +}; + +/* ----------------------------------------------------------------------------- + * Platform driver + */ + +static void rzg2l_du_remove(struct platform_device *pdev) +{ + struct rzg2l_du_device *rcdu = platform_get_drvdata(pdev); + struct drm_device *ddev = &rcdu->ddev; + + drm_dev_unregister(ddev); + drm_atomic_helper_shutdown(ddev); + + drm_kms_helper_poll_fini(ddev); +} + +static void rzg2l_du_shutdown(struct platform_device *pdev) +{ + struct rzg2l_du_device *rcdu = platform_get_drvdata(pdev); + + drm_atomic_helper_shutdown(&rcdu->ddev); +} + +static int rzg2l_du_probe(struct platform_device *pdev) +{ + struct rzg2l_du_device *rcdu; + int ret; + + if (drm_firmware_drivers_only()) + return -ENODEV; + + /* Allocate and initialize the RZ/G2L device structure. */ + rcdu = devm_drm_dev_alloc(&pdev->dev, &rzg2l_du_driver, + struct rzg2l_du_device, ddev); + if (IS_ERR(rcdu)) + return PTR_ERR(rcdu); + + rcdu->dev = &pdev->dev; + rcdu->info = of_device_get_match_data(rcdu->dev); + + platform_set_drvdata(pdev, rcdu); + + /* I/O resources */ + rcdu->mmio = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(rcdu->mmio)) + return PTR_ERR(rcdu->mmio); + + ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (ret) + return ret; + + /* DRM/KMS objects */ + ret = rzg2l_du_modeset_init(rcdu); + if (ret < 0) { + /* + * Don't use dev_err_probe(), as it would overwrite the probe + * deferral reason recorded in rzg2l_du_modeset_init(). + */ + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "failed to initialize DRM/KMS (%d)\n", ret); + goto error; + } + + /* + * Register the DRM device with the core and the connectors with + * sysfs. + */ + ret = drm_dev_register(&rcdu->ddev, 0); + if (ret) + goto error; + + drm_info(&rcdu->ddev, "Device %s probed\n", dev_name(&pdev->dev)); + + drm_fbdev_generic_setup(&rcdu->ddev, 32); + + return 0; + +error: + drm_kms_helper_poll_fini(&rcdu->ddev); + return ret; +} + +static struct platform_driver rzg2l_du_platform_driver = { + .probe = rzg2l_du_probe, + .remove_new = rzg2l_du_remove, + .shutdown = rzg2l_du_shutdown, + .driver = { + .name = "rzg2l-du", + .of_match_table = rzg2l_du_of_table, + }, +}; + +module_platform_driver(rzg2l_du_platform_driver); + +MODULE_AUTHOR("Biju Das <biju.das.jz@xxxxxxxxxxxxxx>"); +MODULE_DESCRIPTION("Renesas RZ/G2L Display Unit DRM Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h new file mode 100644 index 000000000000..58806c2a8f2b --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.h @@ -0,0 +1,78 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * RZ/G2L Display Unit DRM driver + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_drv.h + */ + +#ifndef __RZG2L_DU_DRV_H__ +#define __RZG2L_DU_DRV_H__ + +#include <linux/kernel.h> + +#include <drm/drm_device.h> + +#include "rzg2l_du_crtc.h" +#include "rzg2l_du_vsp.h" + +struct device; +struct drm_property; + +enum rzg2l_du_output { + RZG2L_DU_OUTPUT_DSI0, + RZG2L_DU_OUTPUT_DPAD0, + RZG2L_DU_OUTPUT_MAX, +}; + +/* + * struct rzg2l_du_output_routing - Output routing specification + * @possible_outputs: bitmask of possible outputs + * @port: device tree port number corresponding to this output route + * + * The DU has 2 possible outputs (DPAD0, DSI0). Output routing data + * specify the valid SoC outputs, which CRTC can drive the output, and the type + * of in-SoC encoder for the output. + */ +struct rzg2l_du_output_routing { + unsigned int possible_outputs; + unsigned int port; +}; + +/* + * struct rzg2l_du_device_info - DU model-specific information + * @channels_mask: bit mask of available DU channels + * @routes: array of CRTC to output routes, indexed by output (RZG2L_DU_OUTPUT_*) + */ +struct rzg2l_du_device_info { + unsigned int channels_mask; + struct rzg2l_du_output_routing routes[RZG2L_DU_OUTPUT_MAX]; +}; + +#define RZG2L_DU_MAX_CRTCS 1 +#define RZG2L_DU_MAX_VSPS 1 +#define RZG2L_DU_MAX_DSI 1 + +struct rzg2l_du_device { + struct device *dev; + const struct rzg2l_du_device_info *info; + + void __iomem *mmio; + + struct drm_device ddev; + + struct rzg2l_du_crtc crtcs[RZG2L_DU_MAX_CRTCS]; + unsigned int num_crtcs; + + struct rzg2l_du_vsp vsps[RZG2L_DU_MAX_VSPS]; +}; + +static inline struct rzg2l_du_device *to_rzg2l_du_device(struct drm_device *dev) +{ + return container_of(dev, struct rzg2l_du_device, ddev); +} + +const char *rzg2l_du_output_name(enum rzg2l_du_output output); + +#endif /* __RZG2L_DU_DRV_H__ */ diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_encoder.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_encoder.c new file mode 100644 index 000000000000..339cbaaea0b5 --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_encoder.c @@ -0,0 +1,72 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * RZ/G2L Display Unit Encoder + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_encoder.c + */ + +#include <linux/export.h> +#include <linux/of.h> + +#include <drm/drm_bridge.h> +#include <drm/drm_bridge_connector.h> +#include <drm/drm_panel.h> + +#include "rzg2l_du_drv.h" +#include "rzg2l_du_encoder.h" + +/* ----------------------------------------------------------------------------- + * Encoder + */ + +static const struct drm_encoder_funcs rzg2l_du_encoder_funcs = { +}; + +int rzg2l_du_encoder_init(struct rzg2l_du_device *rcdu, + enum rzg2l_du_output output, + struct device_node *enc_node) +{ + struct rzg2l_du_encoder *renc; + struct drm_connector *connector; + struct drm_bridge *bridge; + int ret; + + /* Locate the DRM bridge from the DT node. */ + bridge = of_drm_find_bridge(enc_node); + if (!bridge) + return -EPROBE_DEFER; + + dev_dbg(rcdu->dev, "initializing encoder %pOF for output %s\n", + enc_node, rzg2l_du_output_name(output)); + + renc = drmm_encoder_alloc(&rcdu->ddev, struct rzg2l_du_encoder, base, + &rzg2l_du_encoder_funcs, DRM_MODE_ENCODER_NONE, + NULL); + if (IS_ERR(renc)) + return PTR_ERR(renc); + + renc->output = output; + + /* Attach the bridge to the encoder. */ + ret = drm_bridge_attach(&renc->base, bridge, NULL, + DRM_BRIDGE_ATTACH_NO_CONNECTOR); + if (ret) { + dev_err(rcdu->dev, + "failed to attach bridge %pOF for output %s (%d)\n", + bridge->of_node, rzg2l_du_output_name(output), ret); + return ret; + } + + /* Create the connector for the chain of bridges. */ + connector = drm_bridge_connector_init(&rcdu->ddev, &renc->base); + if (IS_ERR(connector)) { + dev_err(rcdu->dev, + "failed to created connector for output %s (%ld)\n", + rzg2l_du_output_name(output), PTR_ERR(connector)); + return PTR_ERR(connector); + } + + return drm_connector_attach_encoder(connector, &renc->base); +} diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_encoder.h b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_encoder.h new file mode 100644 index 000000000000..3e430c1f6132 --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_encoder.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * RZ/G2L Display Unit Encoder + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_encoder.h + */ + +#ifndef __RZG2L_DU_ENCODER_H__ +#define __RZG2L_DU_ENCODER_H__ + +#include <drm/drm_encoder.h> +#include <linux/container_of.h> + +struct rzg2l_du_device; + +struct rzg2l_du_encoder { + struct drm_encoder base; + enum rzg2l_du_output output; +}; + +static inline struct rzg2l_du_encoder *to_rzg2l_encoder(struct drm_encoder *e) +{ + return container_of(e, struct rzg2l_du_encoder, base); +} + +int rzg2l_du_encoder_init(struct rzg2l_du_device *rcdu, + enum rzg2l_du_output output, + struct device_node *enc_node); + +#endif /* __RZG2L_DU_ENCODER_H__ */ diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c new file mode 100644 index 000000000000..07b312b6f81e --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c @@ -0,0 +1,371 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * RZ/G2L Display Unit Mode Setting + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_kms.c + */ + +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_crtc.h> +#include <drm/drm_device.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_gem_dma_helper.h> +#include <drm/drm_gem_framebuffer_helper.h> +#include <drm/drm_managed.h> +#include <drm/drm_probe_helper.h> +#include <drm/drm_vblank.h> + +#include <linux/device.h> +#include <linux/of.h> +#include <linux/of_graph.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> + +#include "rzg2l_du_crtc.h" +#include "rzg2l_du_drv.h" +#include "rzg2l_du_encoder.h" +#include "rzg2l_du_kms.h" +#include "rzg2l_du_vsp.h" + +/* ----------------------------------------------------------------------------- + * Format helpers + */ + +static const struct rzg2l_du_format_info rzg2l_du_format_infos[] = { + { + .fourcc = DRM_FORMAT_XRGB8888, + .v4l2 = V4L2_PIX_FMT_XBGR32, + .bpp = 32, + .planes = 1, + .hsub = 1, + }, { + .fourcc = DRM_FORMAT_ARGB8888, + .v4l2 = V4L2_PIX_FMT_ABGR32, + .bpp = 32, + .planes = 1, + .hsub = 1, + }, { + .fourcc = DRM_FORMAT_RGB888, + .v4l2 = V4L2_PIX_FMT_BGR24, + .bpp = 24, + .planes = 1, + .hsub = 1, + } +}; + +const struct rzg2l_du_format_info *rzg2l_du_format_info(u32 fourcc) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(rzg2l_du_format_infos); ++i) { + if (rzg2l_du_format_infos[i].fourcc == fourcc) + return &rzg2l_du_format_infos[i]; + } + + return NULL; +} + +/* ----------------------------------------------------------------------------- + * Frame buffer + */ + +int rzg2l_du_dumb_create(struct drm_file *file, struct drm_device *dev, + struct drm_mode_create_dumb *args) +{ + unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); + unsigned int align = 16 * args->bpp / 8; + + args->pitch = roundup(min_pitch, align); + + return drm_gem_dma_dumb_create_internal(file, dev, args); +} + +static struct drm_framebuffer * +rzg2l_du_fb_create(struct drm_device *dev, struct drm_file *file_priv, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + const struct rzg2l_du_format_info *format; + unsigned int max_pitch; + + format = rzg2l_du_format_info(mode_cmd->pixel_format); + if (!format) { + dev_dbg(dev->dev, "unsupported pixel format %p4cc\n", + &mode_cmd->pixel_format); + return ERR_PTR(-EINVAL); + } + + /* + * On RZ/G2L the memory interface is handled by the VSP that limits the + * pitch to 65535 bytes. + */ + max_pitch = 65535; + if (mode_cmd->pitches[0] > max_pitch) { + dev_dbg(dev->dev, "invalid pitch value %u\n", + mode_cmd->pitches[0]); + return ERR_PTR(-EINVAL); + } + + return drm_gem_fb_create(dev, file_priv, mode_cmd); +} + +/* ----------------------------------------------------------------------------- + * Initialization + */ + +static const struct drm_mode_config_helper_funcs rzg2l_du_mode_config_helper = { + .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm, +}; + +static const struct drm_mode_config_funcs rzg2l_du_mode_config_funcs = { + .fb_create = rzg2l_du_fb_create, + .atomic_check = drm_atomic_helper_check, + .atomic_commit = drm_atomic_helper_commit, +}; + +static int rzg2l_du_encoders_init_one(struct rzg2l_du_device *rcdu, + enum rzg2l_du_output output, + struct of_endpoint *ep) +{ + struct device_node *entity; + int ret; + + /* Locate the connected entity and initialize the encoder. */ + entity = of_graph_get_remote_port_parent(ep->local_node); + if (!entity) { + dev_dbg(rcdu->dev, "unconnected endpoint %pOF, skipping\n", + ep->local_node); + return -ENODEV; + } + + if (!of_device_is_available(entity)) { + dev_dbg(rcdu->dev, + "connected entity %pOF is disabled, skipping\n", + entity); + of_node_put(entity); + return -ENODEV; + } + + ret = rzg2l_du_encoder_init(rcdu, output, entity); + if (ret && ret != -EPROBE_DEFER && ret != -ENOLINK) + dev_warn(rcdu->dev, + "failed to initialize encoder %pOF on output %s (%d), skipping\n", + entity, rzg2l_du_output_name(output), ret); + + of_node_put(entity); + + return ret; +} + +static int rzg2l_du_encoders_init(struct rzg2l_du_device *rcdu) +{ + struct device_node *np = rcdu->dev->of_node; + struct device_node *ep_node; + unsigned int num_encoders = 0; + + /* + * Iterate over the endpoints and create one encoder for each output + * pipeline. + */ + for_each_endpoint_of_node(np, ep_node) { + enum rzg2l_du_output output; + struct of_endpoint ep; + unsigned int i; + int ret; + + ret = of_graph_parse_endpoint(ep_node, &ep); + if (ret < 0) { + of_node_put(ep_node); + return ret; + } + + /* Find the output route corresponding to the port number. */ + for (i = 0; i < RZG2L_DU_OUTPUT_MAX; ++i) { + if (rcdu->info->routes[i].port == ep.port) { + output = i; + break; + } + } + + if (i == RZG2L_DU_OUTPUT_MAX) { + dev_warn(rcdu->dev, + "port %u references unexisting output, skipping\n", + ep.port); + continue; + } + + /* Process the output pipeline. */ + ret = rzg2l_du_encoders_init_one(rcdu, output, &ep); + if (ret < 0) { + if (ret == -EPROBE_DEFER) { + of_node_put(ep_node); + return ret; + } + + continue; + } + + num_encoders++; + } + + return num_encoders; +} + +static int rzg2l_du_vsps_init(struct rzg2l_du_device *rcdu) +{ + const struct device_node *np = rcdu->dev->of_node; + const char *vsps_prop_name = "renesas,vsps"; + struct of_phandle_args args; + struct { + struct device_node *np; + unsigned int crtcs_mask; + } vsps[RZG2L_DU_MAX_VSPS] = { { NULL, }, }; + unsigned int vsps_count = 0; + unsigned int cells; + unsigned int i; + int ret; + + /* + * First parse the DT vsps property to populate the list of VSPs. Each + * entry contains a pointer to the VSP DT node and a bitmask of the + * connected DU CRTCs. + */ + ret = of_property_count_u32_elems(np, vsps_prop_name); + cells = ret / rcdu->num_crtcs - 1; + if (cells != 1) + return -EINVAL; + + for (i = 0; i < rcdu->num_crtcs; ++i) { + unsigned int j; + + ret = of_parse_phandle_with_fixed_args(np, vsps_prop_name, + cells, i, &args); + if (ret < 0) + goto done; + + /* + * Add the VSP to the list or update the corresponding existing + * entry if the VSP has already been added. + */ + for (j = 0; j < vsps_count; ++j) { + if (vsps[j].np == args.np) + break; + } + + if (j < vsps_count) + of_node_put(args.np); + else + vsps[vsps_count++].np = args.np; + + vsps[j].crtcs_mask |= BIT(i); + + /* + * Store the VSP pointer and pipe index in the CRTC. If the + * second cell of the 'renesas,vsps' specifier isn't present, + * default to 0. + */ + rcdu->crtcs[i].vsp = &rcdu->vsps[j]; + rcdu->crtcs[i].vsp_pipe = cells >= 1 ? args.args[0] : 0; + } + + /* + * Then initialize all the VSPs from the node pointers and CRTCs bitmask + * computed previously. + */ + for (i = 0; i < vsps_count; ++i) { + struct rzg2l_du_vsp *vsp = &rcdu->vsps[i]; + + vsp->index = i; + vsp->dev = rcdu; + + ret = rzg2l_du_vsp_init(vsp, vsps[i].np, vsps[i].crtcs_mask); + if (ret) + goto done; + } + +done: + for (i = 0; i < ARRAY_SIZE(vsps); ++i) + of_node_put(vsps[i].np); + + return ret; +} + +int rzg2l_du_modeset_init(struct rzg2l_du_device *rcdu) +{ + struct drm_device *dev = &rcdu->ddev; + struct drm_encoder *encoder; + unsigned int num_encoders; + int ret; + + ret = drmm_mode_config_init(dev); + if (ret) + return ret; + + dev->mode_config.min_width = 0; + dev->mode_config.min_height = 0; + dev->mode_config.normalize_zpos = true; + dev->mode_config.funcs = &rzg2l_du_mode_config_funcs; + dev->mode_config.helper_private = &rzg2l_du_mode_config_helper; + + /* + * The RZ DU uses the VSP1 for memory access, and is limited + * to frame sizes of 1920x1080. + */ + dev->mode_config.max_width = 1920; + dev->mode_config.max_height = 1080; + + rcdu->num_crtcs = hweight8(rcdu->info->channels_mask); + + /* + * Initialize vertical blanking interrupts handling. Start with vblank + * disabled for all CRTCs. + */ + ret = drm_vblank_init(dev, rcdu->num_crtcs); + if (ret < 0) + return ret; + + /* Initialize the compositors. */ + ret = rzg2l_du_vsps_init(rcdu); + if (ret < 0) + return ret; + + /* Create the CRTCs. */ + ret = rzg2l_du_crtc_create(rcdu); + if (ret < 0) + return ret; + + /* Initialize the encoders. */ + ret = rzg2l_du_encoders_init(rcdu); + if (ret < 0) + return dev_err_probe(rcdu->dev, ret, + "failed to initialize encoders\n"); + + if (ret == 0) { + dev_err(rcdu->dev, "error: no encoder could be initialized\n"); + return -EINVAL; + } + + num_encoders = ret; + + /* + * Set the possible CRTCs and possible clones. There's always at least + * one way for all encoders to clone each other, set all bits in the + * possible clones field. + */ + list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { + struct rzg2l_du_encoder *renc = to_rzg2l_encoder(encoder); + const struct rzg2l_du_output_routing *route = + &rcdu->info->routes[renc->output]; + + encoder->possible_crtcs = route->possible_outputs; + encoder->possible_clones = (1 << num_encoders) - 1; + } + + drm_mode_config_reset(dev); + + drm_kms_helper_poll_init(dev); + + return 0; +} diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.h b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.h new file mode 100644 index 000000000000..876e97cfbf45 --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * RZ/G2L Display Unit Mode Setting + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_kms.h + */ + +#ifndef __RZG2L_DU_KMS_H__ +#define __RZG2L_DU_KMS_H__ + +#include <linux/types.h> + +struct dma_buf_attachment; +struct drm_file; +struct drm_device; +struct drm_gem_object; +struct drm_mode_create_dumb; +struct rzg2l_du_device; +struct sg_table; + +struct rzg2l_du_format_info { + u32 fourcc; + u32 v4l2; + unsigned int bpp; + unsigned int planes; + unsigned int hsub; +}; + +const struct rzg2l_du_format_info *rzg2l_du_format_info(u32 fourcc); + +int rzg2l_du_modeset_init(struct rzg2l_du_device *rcdu); + +int rzg2l_du_dumb_create(struct drm_file *file, struct drm_device *dev, + struct drm_mode_create_dumb *args); + +struct drm_gem_object * +rzg2l_du_gem_prime_import_sg_table(struct drm_device *dev, + struct dma_buf_attachment *attach, + struct sg_table *sgt); + +#endif /* __RZG2L_DU_KMS_H__ */ diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c new file mode 100644 index 000000000000..0ae6331d6430 --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.c @@ -0,0 +1,349 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * RZ/G2L Display Unit VSP-Based Compositor + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_vsp.c + */ + +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_blend.h> +#include <drm/drm_crtc.h> +#include <drm/drm_fb_dma_helper.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_gem_atomic_helper.h> +#include <drm/drm_gem_dma_helper.h> +#include <drm/drm_managed.h> +#include <drm/drm_vblank.h> + +#include <linux/bitops.h> +#include <linux/dma-mapping.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/scatterlist.h> + +#include <media/vsp1.h> + +#include "rzg2l_du_drv.h" +#include "rzg2l_du_kms.h" +#include "rzg2l_du_vsp.h" + +static void rzg2l_du_vsp_complete(void *private, unsigned int status, u32 crc) +{ + struct rzg2l_du_crtc *crtc = private; + + if (crtc->vblank_enable) + drm_crtc_handle_vblank(&crtc->crtc); + + if (status & VSP1_DU_STATUS_COMPLETE) + rzg2l_du_crtc_finish_page_flip(crtc); + + drm_crtc_add_crc_entry(&crtc->crtc, false, 0, &crc); +} + +void rzg2l_du_vsp_enable(struct rzg2l_du_crtc *crtc) +{ + const struct drm_display_mode *mode = &crtc->crtc.state->adjusted_mode; + struct vsp1_du_lif_config cfg = { + .width = mode->hdisplay, + .height = mode->vdisplay, + .interlaced = mode->flags & DRM_MODE_FLAG_INTERLACE, + .callback = rzg2l_du_vsp_complete, + .callback_data = crtc, + }; + + vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, &cfg); +} + +void rzg2l_du_vsp_disable(struct rzg2l_du_crtc *crtc) +{ + vsp1_du_setup_lif(crtc->vsp->vsp, crtc->vsp_pipe, NULL); +} + +void rzg2l_du_vsp_atomic_flush(struct rzg2l_du_crtc *crtc) +{ + struct vsp1_du_atomic_pipe_config cfg = { { 0, } }; + struct rzg2l_du_crtc_state *state; + + state = to_rzg2l_crtc_state(crtc->crtc.state); + + vsp1_du_atomic_flush(crtc->vsp->vsp, crtc->vsp_pipe, &cfg); +} + +struct drm_plane *rzg2l_du_vsp_get_drm_plane(struct rzg2l_du_crtc *crtc, + unsigned int pipe_index) +{ + struct rzg2l_du_device *rcdu = crtc->vsp->dev; + struct drm_plane *plane = NULL; + + drm_for_each_plane(plane, &rcdu->ddev) { + struct rzg2l_du_vsp_plane *vsp_plane = to_rzg2l_vsp_plane(plane); + + if (vsp_plane->index == pipe_index) + break; + } + + return plane ? plane : ERR_PTR(-EINVAL); +} + +static const u32 rzg2l_du_vsp_formats[] = { + DRM_FORMAT_RGB332, + DRM_FORMAT_ARGB4444, + DRM_FORMAT_XRGB4444, + DRM_FORMAT_ARGB1555, + DRM_FORMAT_XRGB1555, + DRM_FORMAT_RGB565, + DRM_FORMAT_BGR888, + DRM_FORMAT_RGB888, + DRM_FORMAT_BGRA8888, + DRM_FORMAT_BGRX8888, + DRM_FORMAT_ARGB8888, + DRM_FORMAT_XRGB8888, + DRM_FORMAT_UYVY, + DRM_FORMAT_YUYV, + DRM_FORMAT_YVYU, + DRM_FORMAT_NV12, + DRM_FORMAT_NV21, + DRM_FORMAT_NV16, + DRM_FORMAT_NV61, + DRM_FORMAT_YUV420, + DRM_FORMAT_YVU420, + DRM_FORMAT_YUV422, + DRM_FORMAT_YVU422, + DRM_FORMAT_YUV444, + DRM_FORMAT_YVU444, +}; + +static void rzg2l_du_vsp_plane_setup(struct rzg2l_du_vsp_plane *plane) +{ + struct rzg2l_du_vsp_plane_state *state = + to_rzg2l_vsp_plane_state(plane->plane.state); + struct rzg2l_du_crtc *crtc = to_rzg2l_crtc(state->state.crtc); + struct drm_framebuffer *fb = plane->plane.state->fb; + const struct rzg2l_du_format_info *format; + struct vsp1_du_atomic_config cfg = { + .pixelformat = 0, + .pitch = fb->pitches[0], + .alpha = state->state.alpha >> 8, + .zpos = state->state.zpos, + }; + u32 fourcc = state->format->fourcc; + unsigned int i; + + cfg.src.left = state->state.src.x1 >> 16; + cfg.src.top = state->state.src.y1 >> 16; + cfg.src.width = drm_rect_width(&state->state.src) >> 16; + cfg.src.height = drm_rect_height(&state->state.src) >> 16; + + cfg.dst.left = state->state.dst.x1; + cfg.dst.top = state->state.dst.y1; + cfg.dst.width = drm_rect_width(&state->state.dst); + cfg.dst.height = drm_rect_height(&state->state.dst); + + for (i = 0; i < state->format->planes; ++i) { + struct drm_gem_dma_object *gem; + + gem = drm_fb_dma_get_gem_obj(fb, i); + cfg.mem[i] = gem->dma_addr + fb->offsets[i]; + } + + if (state->state.pixel_blend_mode == DRM_MODE_BLEND_PIXEL_NONE) { + switch (fourcc) { + case DRM_FORMAT_ARGB1555: + fourcc = DRM_FORMAT_XRGB1555; + break; + + case DRM_FORMAT_ARGB4444: + fourcc = DRM_FORMAT_XRGB4444; + break; + + case DRM_FORMAT_ARGB8888: + fourcc = DRM_FORMAT_XRGB8888; + break; + } + } + + format = rzg2l_du_format_info(fourcc); + cfg.pixelformat = format->v4l2; + + cfg.premult = state->state.pixel_blend_mode == DRM_MODE_BLEND_PREMULTI; + + vsp1_du_atomic_update(plane->vsp->vsp, crtc->vsp_pipe, + plane->index, &cfg); +} + +static int __rzg2l_du_vsp_plane_atomic_check(struct drm_plane *plane, + struct drm_plane_state *state, + const struct rzg2l_du_format_info **format) +{ + struct drm_crtc_state *crtc_state; + int ret; + + if (!state->crtc) { + /* + * The visible field is not reset by the DRM core but only + * updated by drm_atomic_helper_check_plane_state, set it + * manually. + */ + state->visible = false; + *format = NULL; + return 0; + } + + crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); + if (IS_ERR(crtc_state)) + return PTR_ERR(crtc_state); + + ret = drm_atomic_helper_check_plane_state(state, crtc_state, + DRM_PLANE_NO_SCALING, + DRM_PLANE_NO_SCALING, + true, true); + if (ret < 0) + return ret; + + if (!state->visible) { + *format = NULL; + return 0; + } + + *format = rzg2l_du_format_info(state->fb->format->format); + + return 0; +} + +static int rzg2l_du_vsp_plane_atomic_check(struct drm_plane *plane, + struct drm_atomic_state *state) +{ + struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state, + plane); + struct rzg2l_du_vsp_plane_state *rstate = to_rzg2l_vsp_plane_state(new_plane_state); + + return __rzg2l_du_vsp_plane_atomic_check(plane, new_plane_state, &rstate->format); +} + +static void rzg2l_du_vsp_plane_atomic_update(struct drm_plane *plane, + struct drm_atomic_state *state) +{ + struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane); + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane); + struct rzg2l_du_vsp_plane *rplane = to_rzg2l_vsp_plane(plane); + struct rzg2l_du_crtc *crtc = to_rzg2l_crtc(old_state->crtc); + + if (new_state->visible) + rzg2l_du_vsp_plane_setup(rplane); + else if (old_state->crtc) + vsp1_du_atomic_update(rplane->vsp->vsp, crtc->vsp_pipe, + rplane->index, NULL); +} + +static const struct drm_plane_helper_funcs rzg2l_du_vsp_plane_helper_funcs = { + .atomic_check = rzg2l_du_vsp_plane_atomic_check, + .atomic_update = rzg2l_du_vsp_plane_atomic_update, +}; + +static struct drm_plane_state * +rzg2l_du_vsp_plane_atomic_duplicate_state(struct drm_plane *plane) +{ + struct rzg2l_du_vsp_plane_state *copy; + + if (WARN_ON(!plane->state)) + return NULL; + + copy = kzalloc(sizeof(*copy), GFP_KERNEL); + if (!copy) + return NULL; + + __drm_atomic_helper_plane_duplicate_state(plane, ©->state); + + return ©->state; +} + +static void rzg2l_du_vsp_plane_atomic_destroy_state(struct drm_plane *plane, + struct drm_plane_state *state) +{ + __drm_atomic_helper_plane_destroy_state(state); + kfree(to_rzg2l_vsp_plane_state(state)); +} + +static void rzg2l_du_vsp_plane_reset(struct drm_plane *plane) +{ + struct rzg2l_du_vsp_plane_state *state; + + if (plane->state) { + rzg2l_du_vsp_plane_atomic_destroy_state(plane, plane->state); + plane->state = NULL; + } + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return; + + __drm_atomic_helper_plane_reset(plane, &state->state); +} + +static const struct drm_plane_funcs rzg2l_du_vsp_plane_funcs = { + .update_plane = drm_atomic_helper_update_plane, + .disable_plane = drm_atomic_helper_disable_plane, + .reset = rzg2l_du_vsp_plane_reset, + .atomic_duplicate_state = rzg2l_du_vsp_plane_atomic_duplicate_state, + .atomic_destroy_state = rzg2l_du_vsp_plane_atomic_destroy_state, +}; + +static void rzg2l_du_vsp_cleanup(struct drm_device *dev, void *res) +{ + struct rzg2l_du_vsp *vsp = res; + + put_device(vsp->vsp); +} + +int rzg2l_du_vsp_init(struct rzg2l_du_vsp *vsp, struct device_node *np, + unsigned int crtcs) +{ + struct rzg2l_du_device *rcdu = vsp->dev; + struct platform_device *pdev; + unsigned int num_crtcs = hweight32(crtcs); + unsigned int num_planes = 2; + unsigned int i; + int ret; + + /* Find the VSP device and initialize it. */ + pdev = of_find_device_by_node(np); + if (!pdev) + return -ENXIO; + + vsp->vsp = &pdev->dev; + + ret = drmm_add_action_or_reset(&rcdu->ddev, rzg2l_du_vsp_cleanup, vsp); + if (ret < 0) + return ret; + + ret = vsp1_du_init(vsp->vsp); + if (ret < 0) + return ret; + + for (i = 0; i < num_planes; ++i) { + enum drm_plane_type type = i < num_crtcs + ? DRM_PLANE_TYPE_PRIMARY + : DRM_PLANE_TYPE_OVERLAY; + struct rzg2l_du_vsp_plane *plane; + + plane = drmm_universal_plane_alloc(&rcdu->ddev, struct rzg2l_du_vsp_plane, + plane, crtcs, &rzg2l_du_vsp_plane_funcs, + rzg2l_du_vsp_formats, + ARRAY_SIZE(rzg2l_du_vsp_formats), + NULL, type, NULL); + if (IS_ERR(plane)) + return PTR_ERR(plane); + + plane->vsp = vsp; + plane->index = i; + + drm_plane_helper_add(&plane->plane, + &rzg2l_du_vsp_plane_helper_funcs); + } + + return 0; +} diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.h b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.h new file mode 100644 index 000000000000..12d98f04bf89 --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_vsp.h @@ -0,0 +1,82 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * RZ/G2L Display Unit VSP-Based Compositor + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_vsp.h + */ + +#ifndef __RZG2L_DU_VSP_H__ +#define __RZG2L_DU_VSP_H__ + +#include <drm/drm_plane.h> +#include <linux/container_of.h> +#include <linux/scatterlist.h> + +struct device; +struct drm_framebuffer; +struct rzg2l_du_device; +struct rzg2l_du_format_info; +struct rzg2l_du_vsp; + +struct rzg2l_du_vsp_plane { + struct drm_plane plane; + struct rzg2l_du_vsp *vsp; + unsigned int index; +}; + +struct rzg2l_du_vsp { + unsigned int index; + struct device *vsp; + struct rzg2l_du_device *dev; +}; + +static inline struct rzg2l_du_vsp_plane *to_rzg2l_vsp_plane(struct drm_plane *p) +{ + return container_of(p, struct rzg2l_du_vsp_plane, plane); +} + +/** + * struct rzg2l_du_vsp_plane_state - Driver-specific plane state + * @state: base DRM plane state + * @format: information about the pixel format used by the plane + */ +struct rzg2l_du_vsp_plane_state { + struct drm_plane_state state; + + const struct rzg2l_du_format_info *format; +}; + +static inline struct rzg2l_du_vsp_plane_state * +to_rzg2l_vsp_plane_state(struct drm_plane_state *state) +{ + return container_of(state, struct rzg2l_du_vsp_plane_state, state); +} + +#ifdef CONFIG_DRM_RCAR_VSP +int rzg2l_du_vsp_init(struct rzg2l_du_vsp *vsp, struct device_node *np, + unsigned int crtcs); +void rzg2l_du_vsp_enable(struct rzg2l_du_crtc *crtc); +void rzg2l_du_vsp_disable(struct rzg2l_du_crtc *crtc); +void rzg2l_du_vsp_atomic_flush(struct rzg2l_du_crtc *crtc); +struct drm_plane *rzg2l_du_vsp_get_drm_plane(struct rzg2l_du_crtc *crtc, + unsigned int pipe_index); +#else +static inline int rzg2l_du_vsp_init(struct rzg2l_du_vsp *vsp, struct device_node *np, + unsigned int crtcs) +{ + return -ENXIO; +} + +static inline void rzg2l_du_vsp_enable(struct rzg2l_du_crtc *crtc) { }; +static inline void rzg2l_du_vsp_disable(struct rzg2l_du_crtc *crtc) { }; +static inline void rzg2l_du_vsp_atomic_flush(struct rzg2l_du_crtc *crtc) { }; +static inline struct drm_plane *rzg2l_du_vsp_get_drm_plane(struct rzg2l_du_crtc *crtc, + unsigned int pipe_index) +{ + return ERR_PTR(-ENXIO); +} +#endif + +#endif /* __RZG2L_DU_VSP_H__ */ -- 2.25.1
