Add the subdev driver for the MIPI CSIS units available in S5P and Exynos4 SoC series. This driver supports both CSIS0 and CSIS1 MIPI-CSI2 receivers. The driver requires Runtime PM to be enabled for proper operation. Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx> Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> --- drivers/media/video/Kconfig | 9 + drivers/media/video/s5p-fimc/Makefile | 6 +- drivers/media/video/s5p-fimc/mipi-csis.c | 722 ++++++++++++++++++++++++++++++ drivers/media/video/s5p-fimc/mipi-csis.h | 22 + 4 files changed, 757 insertions(+), 2 deletions(-) create mode 100644 drivers/media/video/s5p-fimc/mipi-csis.c create mode 100644 drivers/media/video/s5p-fimc/mipi-csis.h diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig index a705493..9c701dd 100644 --- a/drivers/media/video/Kconfig +++ b/drivers/media/video/Kconfig @@ -946,6 +946,15 @@ config VIDEO_SAMSUNG_S5P_FIMC To compile this driver as a module, choose M here: the module will be called s5p-fimc. +config VIDEO_S5P_MIPI_CSIS + tristate "Samsung S5P and EXYNOS4 MIPI CSI receiver driver" + depends on VIDEO_V4L2 && PM_RUNTIME && VIDEO_V4L2_SUBDEV_API + ---help--- + This is a v4l2 driver for Samsung S5P/EXYNOS4 MIPI-CSI receiver. + + To compile this driver as a module, choose M here: the + module will be called s5p-csis. + # # USB Multimedia device configuration # diff --git a/drivers/media/video/s5p-fimc/Makefile b/drivers/media/video/s5p-fimc/Makefile index 7ea1b14..df6954a 100644 --- a/drivers/media/video/s5p-fimc/Makefile +++ b/drivers/media/video/s5p-fimc/Makefile @@ -1,3 +1,5 @@ +s5p-fimc-objs := fimc-core.o fimc-reg.o fimc-capture.o +s5p-csis-objs := mipi-csis.o -obj-$(CONFIG_VIDEO_SAMSUNG_S5P_FIMC) := s5p-fimc.o -s5p-fimc-y := fimc-core.o fimc-reg.o fimc-capture.o +obj-$(CONFIG_VIDEO_S5P_MIPI_CSIS) += s5p-csis.o +obj-$(CONFIG_VIDEO_SAMSUNG_S5P_FIMC) += s5p-fimc.o diff --git a/drivers/media/video/s5p-fimc/mipi-csis.c b/drivers/media/video/s5p-fimc/mipi-csis.c new file mode 100644 index 0000000..d50efcb --- /dev/null +++ b/drivers/media/video/s5p-fimc/mipi-csis.c @@ -0,0 +1,722 @@ +/* + * Samsung S5P SoC series MIPI-CSI receiver driver + * + * Copyright (C) 2011 Samsung Electronics Co., Ltd. + * Contact: Sylwester Nawrocki, <s.nawrocki@xxxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/kernel.h> +#include <linux/memory.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/videodev2.h> +#include <media/v4l2-subdev.h> +#include <plat/mipi_csis.h> +#include "mipi-csis.h" + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Debug level (0-1)"); + +/* Register map definition */ + +/* CSIS global control */ +#define S5PCSIS_CTRL 0x00 +#define S5PCSIS_CTRL_DPDN_DEFAULT (0 << 31) +#define S5PCSIS_CTRL_DPDN_SWAP (1 << 31) +#define S5PCSIS_CTRL_ALIGN_32BIT (1 << 20) +#define S5PCSIS_CTRL_UPDATE_SHADOW (1 << 16) +#define S5PCSIS_CTRL_WCLK_EXTCLK (1 << 8) +#define S5PCSIS_CTRL_RESET (1 << 4) +#define S5PCSIS_CTRL_ENABLE (1 << 0) + +/* D-PHY control */ +#define S5PCSIS_DPHYCTRL 0x04 +#define S5PCSIS_DPHYCTRL_HSS_MASK (0x1f << 27) +#define S5PCSIS_DPHYCTRL_ENABLE (0x1f << 0) + +#define S5PCSIS_CONFIG 0x08 +#define S5PCSIS_CFG_FMT_YCBCR422_8BIT (0x1e << 2) +#define S5PCSIS_CFG_FMT_RAW8 (0x2a << 2) +#define S5PCSIS_CFG_FMT_RAW10 (0x2b << 2) +#define S5PCSIS_CFG_FMT_RAW12 (0x2c << 2) +/* User defined formats, x = 1...4 */ +#define S5PCSIS_CFG_FMT_USER(x) ((0x30 + x - 1) << 2) +#define S5PCSIS_CFG_FMT_MASK (0x3f << 2) +#define S5PCSIS_CFG_NR_LANE_MASK 3 + +/* Interrupt mask. */ +#define S5PCSIS_INTMSK 0x10 +#define S5PCSIS_INTMSK_EN_ALL 0xf000003f +#define S5PCSIS_INTSRC 0x14 + +/* Pixel resolution */ +#define S5PCSIS_RESOL 0x2c +#define CSIS_MAX_PIX_WIDTH 0xffff +#define CSIS_MAX_PIX_HEIGHT 0xffff + +enum { + CSIS_CLK_MUX, + CSIS_CLK_GATE, +}; + +static char *csi_clock_name[] = { + [CSIS_CLK_MUX] = "sclk_csis", + [CSIS_CLK_GATE] = "csis", +}; +#define NUM_CSIS_CLOCKS ARRAY_SIZE(csi_clock_name) + +enum { + ST_POWERED = 1, + ST_STREAMING = 2, + ST_SUSPENDED = 4, +}; + +/** + * struct csis_state - the driver's internal state data structure + * @lock: mutex serializing the subdev and power management operations, + * protecting the 'format' and 'flags' members + * @pads: CSIS pads array + * @sd: pointer to v4l2_subdev associated with CSIS device instance + * @pdev: pointer to a CSIS platform device + * @regs_res: requested I/O register memory resource + * @regs: pointer to mmaped I/O registers memory + * @clock: an array of CSIS clocks + * @irq: requested s5p-mipi-csis irq number + * @flags: the state variable for power and streaming control + * @csis_fmt: pointer to the current CSIS pixel format + * @format: common media bus format for the source and sink pad + */ +struct csis_state { + struct mutex lock; + struct media_pad pads[CSIS_PADS_NUM]; + struct v4l2_subdev sd; + struct platform_device *pdev; + struct resource *regs_res; + void __iomem *regs; + struct clk *clock[NUM_CSIS_CLOCKS]; + int irq; + struct regulator *supply; + u32 flags; + const struct csis_pix_format *csis_fmt; + struct v4l2_mbus_framefmt format; +}; + +/** + * struct csis_pix_format - CSIS pixel format description + * @pix_width_alignment: horizontal pixel alignment, width will be + * multiple of 2^pix_width_alignment + * @code: the corresponding media bus code + * @fmt_reg: S5PCSIS_CONFIG register value + */ +struct csis_pix_format { + unsigned int pix_width_alignment; + enum v4l2_mbus_pixelcode code; + u32 fmt_reg; +}; + +static const struct csis_pix_format s5pcsis_formats[] = { + { + .code = V4L2_MBUS_FMT_VYUY8_2X8, + .fmt_reg = S5PCSIS_CFG_FMT_YCBCR422_8BIT, + }, { + .code = V4L2_MBUS_FMT_JPEG_1X8, + .fmt_reg = S5PCSIS_CFG_FMT_USER(1), + }, +}; + +#define csis_pad_valid(pad) (pad == CSIS_PAD_SOURCE || pad == CSIS_PAD_SINK) + +#define s5pcsis_write(__csis, __r, __v) writel(__v, __csis->regs + __r) +#define s5pcsis_read(__csis, __r) readl(__csis->regs + __r) + +static struct csis_state *sd_to_csis_state(struct v4l2_subdev *sdev) +{ + return container_of(sdev, struct csis_state, sd); +} + +static const struct csis_pix_format *find_csis_format( + struct v4l2_mbus_framefmt *mf) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(s5pcsis_formats); i++) + if (mf->code == s5pcsis_formats[i].code) + return &s5pcsis_formats[i]; + return NULL; +} + +static void s5pcsis_enable_interrupts(struct csis_state *state, bool on) +{ + u32 val = s5pcsis_read(state, S5PCSIS_INTMSK); + + val = on ? val | S5PCSIS_INTMSK_EN_ALL : + val & ~S5PCSIS_INTMSK_EN_ALL; + s5pcsis_write(state, S5PCSIS_INTMSK, val); +} + +static void s5pcsis_reset(struct csis_state *state) +{ + u32 val = s5pcsis_read(state, S5PCSIS_CTRL); + + s5pcsis_write(state, S5PCSIS_CTRL, val | S5PCSIS_CTRL_RESET); + udelay(10); +} + +static void s5pcsis_system_enable(struct csis_state *state, bool on) +{ + u32 val; + + val = s5pcsis_read(state, S5PCSIS_CTRL); + if (on) + val |= S5PCSIS_CTRL_ENABLE; + else + val &= ~S5PCSIS_CTRL_ENABLE; + s5pcsis_write(state, S5PCSIS_CTRL, val); + + val = s5pcsis_read(state, S5PCSIS_DPHYCTRL); + if (on) + val |= S5PCSIS_DPHYCTRL_ENABLE; + else + val &= ~S5PCSIS_DPHYCTRL_ENABLE; + s5pcsis_write(state, S5PCSIS_DPHYCTRL, val); +} + +/* Called with the state.lock mutex held */ +static void __s5pcsis_set_format(struct csis_state *state) +{ + struct v4l2_mbus_framefmt *mf = &state->format; + u32 val; + + v4l2_dbg(1, debug, &state->sd, "fmt: %d, %d x %d\n", + mf->code, mf->width, mf->height); + + /* Color format */ + val = s5pcsis_read(state, S5PCSIS_CONFIG); + val = (val & ~S5PCSIS_CFG_FMT_MASK) | state->csis_fmt->fmt_reg; + s5pcsis_write(state, S5PCSIS_CONFIG, val); + + /* Pixel resolution */ + val = (mf->width << 16) | mf->height; + s5pcsis_write(state, S5PCSIS_RESOL, val); +} + +static void s5pcsis_set_hsync_settle(struct csis_state *state, int settle) +{ + u32 val = s5pcsis_read(state, S5PCSIS_DPHYCTRL); + + val &= ~S5PCSIS_DPHYCTRL_HSS_MASK | (settle << 27); + s5pcsis_write(state, S5PCSIS_DPHYCTRL, val); +} + +static void s5pcsis_set_params(struct csis_state *state) +{ + struct s5p_platform_mipi_csis *pdata = state->pdev->dev.platform_data; + u32 val; + + val = s5pcsis_read(state, S5PCSIS_CONFIG); + val = (val & ~S5PCSIS_CFG_NR_LANE_MASK) | (pdata->lanes - 1); + s5pcsis_write(state, S5PCSIS_CONFIG, val); + + __s5pcsis_set_format(state); + s5pcsis_set_hsync_settle(state, pdata->hs_settle); + + val = s5pcsis_read(state, S5PCSIS_CTRL); + if (pdata->alignment == 32) + val |= S5PCSIS_CTRL_ALIGN_32BIT; + else /* 24-bits */ + val &= ~S5PCSIS_CTRL_ALIGN_32BIT; + /* Not using external clock. */ + val &= ~S5PCSIS_CTRL_WCLK_EXTCLK; + s5pcsis_write(state, S5PCSIS_CTRL, val); + + /* Update the shadow register. */ + val = s5pcsis_read(state, S5PCSIS_CTRL); + s5pcsis_write(state, S5PCSIS_CTRL, val | S5PCSIS_CTRL_UPDATE_SHADOW); +} + +static void s5pcsis_clk_put(struct csis_state *state) +{ + int i; + + for (i = 0; i < NUM_CSIS_CLOCKS; i++) + if (!IS_ERR_OR_NULL(state->clock[i])) + clk_put(state->clock[i]); +} + +static int s5pcsis_clk_get(struct csis_state *state) +{ + struct device *dev = &state->pdev->dev; + int i; + + for (i = 0; i < NUM_CSIS_CLOCKS; i++) { + state->clock[i] = clk_get(dev, csi_clock_name[i]); + if (IS_ERR(state->clock[i])) { + s5pcsis_clk_put(state); + dev_err(dev, "failed to get clock: %s\n", + csi_clock_name[i]); + return -ENXIO; + } + } + return 0; +} + +static int s5pcsis_s_power(struct v4l2_subdev *sd, int on) +{ + struct csis_state *state = sd_to_csis_state(sd); + struct device *dev = &state->pdev->dev; + + if (on) + return pm_runtime_get_sync(dev); + + return pm_runtime_put_sync(dev); +} + +static void s5pcsis_start_stream(struct csis_state *state) +{ + s5pcsis_reset(state); + s5pcsis_set_params(state); + s5pcsis_system_enable(state, true); + s5pcsis_enable_interrupts(state, true); +} + +static void s5pcsis_stop_stream(struct csis_state *state) +{ + s5pcsis_enable_interrupts(state, false); + s5pcsis_system_enable(state, false); +} + +/* v4l2_subdev operations */ +static int s5pcsis_s_stream(struct v4l2_subdev *sd, int enable) +{ + struct csis_state *state = sd_to_csis_state(sd); + int ret = 0; + + v4l2_dbg(1, debug, sd, "%s: %d, state: 0x%x\n", + __func__, enable, state->flags); + + if (enable) { + ret = pm_runtime_get_sync(&state->pdev->dev); + if (ret && ret != 1) + return ret; + } + mutex_lock(&state->lock); + if (enable) { + if (state->flags & ST_SUSPENDED) { + ret = -EBUSY; + goto unlock; + } + s5pcsis_start_stream(state); + state->flags |= ST_STREAMING; + } else { + s5pcsis_stop_stream(state); + state->flags &= ~ST_STREAMING; + } +unlock: + mutex_unlock(&state->lock); + if (!enable) + pm_runtime_put(&state->pdev->dev); + + return ret == 1 ? 0 : ret; +} + +static int s5pcsis_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_fh *fh, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->index >= ARRAY_SIZE(s5pcsis_formats)) + return -EINVAL; + + code->code = s5pcsis_formats[code->index].code; + return 0; +} + +static struct csis_pix_format const *s5pcsis_try_format( + struct v4l2_mbus_framefmt *mf) +{ + struct csis_pix_format const *csis_fmt; + + csis_fmt = find_csis_format(mf); + if (csis_fmt == NULL) + csis_fmt = &s5pcsis_formats[0]; + + mf->code = csis_fmt->code; + v4l_bound_align_image(&mf->width, 1, CSIS_MAX_PIX_WIDTH, + csis_fmt->pix_width_alignment, + &mf->height, 1, CSIS_MAX_PIX_HEIGHT, 1, + 0); + return csis_fmt; +} + +static struct v4l2_mbus_framefmt *__s5pcsis_get_format( + struct csis_state *state, struct v4l2_subdev_fh *fh, + u32 pad, enum v4l2_subdev_format_whence which) +{ + if (pad != CSIS_PAD_SOURCE && pad != CSIS_PAD_SINK) + return NULL; + + if (which == V4L2_SUBDEV_FORMAT_TRY) + return fh ? v4l2_subdev_get_try_format(fh, pad) : NULL; + + return &state->format; +} + +static int s5pcsis_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *fmt) +{ + struct csis_state *state = sd_to_csis_state(sd); + struct csis_pix_format const *csis_fmt; + struct v4l2_mbus_framefmt *mf; + + mf = __s5pcsis_get_format(state, fh, fmt->pad, fmt->which); + + if (fmt->pad == CSIS_PAD_SOURCE) { + if (mf) { + mutex_lock(&state->lock); + fmt->format = *mf; + mutex_unlock(&state->lock); + } + return 0; + } + csis_fmt = s5pcsis_try_format(&fmt->format); + if (mf) { + mutex_lock(&state->lock); + *mf = fmt->format; + if (mf == &state->format) /* Store the active format */ + state->csis_fmt = csis_fmt; + mutex_unlock(&state->lock); + } + return 0; +} + +static int s5pcsis_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, + struct v4l2_subdev_format *fmt) +{ + struct csis_state *state = sd_to_csis_state(sd); + struct v4l2_mbus_framefmt *mf; + + mf = __s5pcsis_get_format(state, fh, fmt->pad, fmt->which); + if (!mf) + return -EINVAL; + + mutex_lock(&state->lock); + fmt->format = *mf; + mutex_unlock(&state->lock); + return 0; +} + +static struct v4l2_subdev_core_ops s5pcsis_core_ops = { + .s_power = s5pcsis_s_power, +}; + +static struct v4l2_subdev_pad_ops s5pcsis_pad_ops = { + .enum_mbus_code = s5pcsis_enum_mbus_code, + .get_fmt = s5pcsis_get_fmt, + .set_fmt = s5pcsis_set_fmt, +}; + +static struct v4l2_subdev_video_ops s5pcsis_video_ops = { + .s_stream = s5pcsis_s_stream, +}; + +static struct v4l2_subdev_ops s5pcsis_subdev_ops = { + .core = &s5pcsis_core_ops, + .pad = &s5pcsis_pad_ops, + .video = &s5pcsis_video_ops, +}; + +static irqreturn_t s5pcsis_irq_handler(int irq, void *dev_id) +{ + struct csis_state *state = dev_id; + u32 val; + + /* Just clear the interrupt pending bits. */ + val = s5pcsis_read(state, S5PCSIS_INTSRC); + s5pcsis_write(state, S5PCSIS_INTSRC, val); + + return IRQ_HANDLED; +} + +static int __init s5pcsis_probe(struct platform_device *pdev) +{ + struct s5p_platform_mipi_csis *pdata; + struct resource *mem_res; + struct resource *regs_res; + struct csis_state *state; + int ret = -ENOMEM; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return -ENOMEM; + + mutex_init(&state->lock); + state->pdev = pdev; + + pdata = pdev->dev.platform_data; + if (pdata == NULL || pdata->phy_enable == NULL) { + dev_err(&pdev->dev, "Platform data not fully specified\n"); + goto e_free; + } + + if ((pdev->id == 1 && pdata->lanes > CSIS1_MAX_LANES) || + pdata->lanes > CSIS0_MAX_LANES) { + ret = -EINVAL; + dev_err(&pdev->dev, "Unsupported number of data lanes: %d\n", + pdata->lanes); + goto e_free; + } + + mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem_res) { + dev_err(&pdev->dev, "Failed to get IO memory region\n"); + goto e_free; + } + + regs_res = request_mem_region(mem_res->start, resource_size(mem_res), + pdev->name); + if (!regs_res) { + dev_err(&pdev->dev, "Failed to request IO memory region\n"); + goto e_free; + } + state->regs_res = regs_res; + + state->regs = ioremap(mem_res->start, resource_size(mem_res)); + if (!state->regs) { + dev_err(&pdev->dev, "Failed to remap IO region\n"); + goto e_reqmem; + } + + ret = s5pcsis_clk_get(state); + if (ret) + goto e_unmap; + + clk_enable(state->clock[CSIS_CLK_MUX]); + if (pdata->clk_rate) + clk_set_rate(state->clock[CSIS_CLK_MUX], pdata->clk_rate); + else + dev_WARN(&pdev->dev, "No clock frequency specified!\n"); + + state->irq = platform_get_irq(pdev, 0); + if (state->irq < 0) { + ret = state->irq; + dev_err(&pdev->dev, "Failed to get irq\n"); + goto e_clkput; + } + + if (!pdata->fixed_phy_vdd) { + state->supply = regulator_get(&pdev->dev, "vdd"); + if (IS_ERR(state->supply)) { + ret = PTR_ERR(state->supply); + state->supply = NULL; + goto e_clkput; + } + } + + ret = request_irq(state->irq, s5pcsis_irq_handler, 0, + dev_name(&pdev->dev), state); + if (ret) { + dev_err(&pdev->dev, "request_irq failed\n"); + goto e_regput; + } + + v4l2_subdev_init(&state->sd, &s5pcsis_subdev_ops); + state->sd.owner = THIS_MODULE; + strlcpy(state->sd.name, dev_name(&pdev->dev), sizeof(state->sd.name)); + state->csis_fmt = &s5pcsis_formats[0]; + + state->pads[CSIS_PAD_SINK].flags = MEDIA_PAD_FL_SINK; + state->pads[CSIS_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_init(&state->sd.entity, + CSIS_PADS_NUM, state->pads, 0); + if (ret < 0) + goto e_irqfree; + + /* This allows to retrieve the platform device id by the host driver */ + v4l2_set_subdevdata(&state->sd, pdev); + + /* .. and a pointer to the subdev. */ + platform_set_drvdata(pdev, &state->sd); + + state->flags = ST_SUSPENDED; + pm_runtime_enable(&pdev->dev); + + return 0; + +e_irqfree: + free_irq(state->irq, state); +e_regput: + if (state->supply) + regulator_put(state->supply); +e_clkput: + clk_disable(state->clock[CSIS_CLK_MUX]); + s5pcsis_clk_put(state); +e_unmap: + iounmap(state->regs); +e_reqmem: + release_mem_region(regs_res->start, resource_size(regs_res)); +e_free: + kfree(state); + return ret; +} + +static int s5pcsis_suspend(struct device *dev) +{ + struct s5p_platform_mipi_csis *pdata = dev->platform_data; + struct platform_device *pdev = to_platform_device(dev); + struct v4l2_subdev *sd = platform_get_drvdata(pdev); + struct csis_state *state = sd_to_csis_state(sd); + int ret; + + v4l2_dbg(1, debug, sd, "%s: flags: 0x%x\n", + __func__, state->flags); + + mutex_lock(&state->lock); + if (state->flags & ST_POWERED) { + s5pcsis_stop_stream(state); + ret = pdata->phy_enable(state->pdev, false); + if (ret) + goto unlock; + + if (state->supply && regulator_disable(state->supply)) + goto unlock; + + clk_disable(state->clock[CSIS_CLK_GATE]); + state->flags &= ~ST_POWERED; + } + state->flags |= ST_SUSPENDED; + unlock: + mutex_unlock(&state->lock); + return ret ? -EAGAIN : 0; +} + +static int s5pcsis_resume(struct device *dev) +{ + struct s5p_platform_mipi_csis *pdata = dev->platform_data; + struct platform_device *pdev = to_platform_device(dev); + struct v4l2_subdev *sd = platform_get_drvdata(pdev); + struct csis_state *state = sd_to_csis_state(sd); + int ret = 0; + + v4l2_dbg(1, debug, sd, "%s: flags: 0x%x\n", + __func__, state->flags); + + mutex_lock(&state->lock); + if (!(state->flags & ST_SUSPENDED)) + goto unlock; + + if (!(state->flags & ST_POWERED)) { + if (state->supply) + ret = regulator_enable(state->supply); + if (ret) + goto unlock; + + ret = pdata->phy_enable(state->pdev, true); + if (!ret) { + state->flags |= ST_POWERED; + } else { + regulator_disable(state->supply); + goto unlock; + } + clk_enable(state->clock[CSIS_CLK_GATE]); + } + if (state->flags & ST_STREAMING) + s5pcsis_start_stream(state); + + state->flags &= ~ST_SUSPENDED; + unlock: + mutex_unlock(&state->lock); + return ret ? -EAGAIN : 0; +} + +#ifdef CONFIG_PM_SLEEP +static int s5pcsis_pm_suspend(struct device *dev) +{ + return s5pcsis_suspend(dev); +} + +static int s5pcsis_pm_resume(struct device *dev) +{ + int ret; + + ret = s5pcsis_resume(dev); + + if (!ret) { + pm_runtime_disable(dev); + ret = pm_runtime_set_active(dev); + pm_runtime_enable(dev); + } + + return ret; +} +#endif + +static int s5pcsis_remove(struct platform_device *pdev) +{ + struct v4l2_subdev *sd = platform_get_drvdata(pdev); + struct csis_state *state = sd_to_csis_state(sd); + struct resource *res = state->regs_res; + + pm_runtime_disable(&pdev->dev); + s5pcsis_suspend(&pdev->dev); + clk_disable(state->clock[CSIS_CLK_MUX]); + pm_runtime_set_suspended(&pdev->dev); + + s5pcsis_clk_put(state); + if (state->supply) + regulator_put(state->supply); + + media_entity_cleanup(&state->sd.entity); + free_irq(state->irq, state); + iounmap(state->regs); + release_mem_region(res->start, resource_size(res)); + kfree(state); + + return 0; +} + +static const struct dev_pm_ops s5pcsis_pm_ops = { + SET_RUNTIME_PM_OPS(s5pcsis_suspend, s5pcsis_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(s5pcsis_pm_suspend, s5pcsis_pm_resume) +}; + +static struct platform_driver s5pcsis_driver = { + .probe = s5pcsis_probe, + .remove = s5pcsis_remove, + .driver = { + .name = CSIS_DRIVER_NAME, + .owner = THIS_MODULE, + .pm = &s5pcsis_pm_ops, + }, +}; + +static int __init s5pcsis_init(void) +{ + return platform_driver_probe(&s5pcsis_driver, s5pcsis_probe); +} + +static void __exit s5pcsis_exit(void) +{ + platform_driver_unregister(&s5pcsis_driver); +} + +module_init(s5pcsis_init); +module_exit(s5pcsis_exit); + +MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>"); +MODULE_DESCRIPTION("S5P/EXYNOS4 MIPI CSI receiver driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/video/s5p-fimc/mipi-csis.h b/drivers/media/video/s5p-fimc/mipi-csis.h new file mode 100644 index 0000000..f569133 --- /dev/null +++ b/drivers/media/video/s5p-fimc/mipi-csis.h @@ -0,0 +1,22 @@ +/* + * Samsung S5P/EXYNOS4 SoC series MIPI-CSI receiver driver + * + * Copyright (C) 2011 Samsung Electronics Co., Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef S5P_MIPI_CSIS_H_ +#define S5P_MIPI_CSIS_H_ + +#define CSIS_DRIVER_NAME "s5p-mipi-csis" +#define CSIS_MAX_ENTITIES 2 +#define CSIS0_MAX_LANES 4 +#define CSIS1_MAX_LANES 2 + +#define CSIS_PAD_SINK 0 +#define CSIS_PAD_SOURCE 1 +#define CSIS_PADS_NUM 2 + +#endif -- 1.7.5 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html