media: platform: rename exynos4-is/ to samsung/exynos4-is/

As the end goal is to have platform drivers split by vendor,
rename exynos4-is/ to samsung/exynos4-is/.

Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

1 files changed, 0 insertions, 1037 deletions

diff --git a/drivers/media/platform/exynos4-is/mipi-csis.c b/drivers/media/platform/exynos4-is/mipi-csis.c
deleted file mode 100644
index 27a214936cb0..000000000000
--- a/drivers/media/platform/exynos4-is/mipi-csis.c
+++ /dev/null
@@ -1,1037 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Samsung S5P/EXYNOS SoC series MIPI-CSI receiver driver
- *
- * Copyright (C) 2011 - 2013 Samsung Electronics Co., Ltd.
- * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
- */
-
-#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/of.h>
-#include <linux/of_graph.h>
-#include <linux/phy/phy.h>
-#include <linux/platform_device.h>
-#include <linux/pm_runtime.h>
-#include <linux/regulator/consumer.h>
-#include <linux/sizes.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/videodev2.h>
-#include <media/drv-intf/exynos-fimc.h>
-#include <media/v4l2-fwnode.h>
-#include <media/v4l2-subdev.h>
-
-#include "mipi-csis.h"
-
-static int debug;
-module_param(debug, int, 0644);
-MODULE_PARM_DESC(debug, "Debug level (0-2)");
-
-/* Register map definition */
-
-/* CSIS global control */
-#define S5PCSIS_CTRL			0x00
-#define S5PCSIS_CTRL_DPDN_DEFAULT	(0 << 31)
-#define S5PCSIS_CTRL_DPDN_SWAP		(1UL << 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_EVEN_BEFORE	(1UL << 31)
-#define S5PCSIS_INTMSK_EVEN_AFTER	(1 << 30)
-#define S5PCSIS_INTMSK_ODD_BEFORE	(1 << 29)
-#define S5PCSIS_INTMSK_ODD_AFTER	(1 << 28)
-#define S5PCSIS_INTMSK_FRAME_START	(1 << 27)
-#define S5PCSIS_INTMSK_FRAME_END	(1 << 26)
-#define S5PCSIS_INTMSK_ERR_SOT_HS	(1 << 12)
-#define S5PCSIS_INTMSK_ERR_LOST_FS	(1 << 5)
-#define S5PCSIS_INTMSK_ERR_LOST_FE	(1 << 4)
-#define S5PCSIS_INTMSK_ERR_OVER		(1 << 3)
-#define S5PCSIS_INTMSK_ERR_ECC		(1 << 2)
-#define S5PCSIS_INTMSK_ERR_CRC		(1 << 1)
-#define S5PCSIS_INTMSK_ERR_UNKNOWN	(1 << 0)
-#define S5PCSIS_INTMSK_EXYNOS4_EN_ALL	0xf000103f
-#define S5PCSIS_INTMSK_EXYNOS5_EN_ALL	0xfc00103f
-
-/* Interrupt source */
-#define S5PCSIS_INTSRC			0x14
-#define S5PCSIS_INTSRC_EVEN_BEFORE	(1UL << 31)
-#define S5PCSIS_INTSRC_EVEN_AFTER	(1 << 30)
-#define S5PCSIS_INTSRC_EVEN		(0x3 << 30)
-#define S5PCSIS_INTSRC_ODD_BEFORE	(1 << 29)
-#define S5PCSIS_INTSRC_ODD_AFTER	(1 << 28)
-#define S5PCSIS_INTSRC_ODD		(0x3 << 28)
-#define S5PCSIS_INTSRC_NON_IMAGE_DATA	(0xf << 28)
-#define S5PCSIS_INTSRC_FRAME_START	(1 << 27)
-#define S5PCSIS_INTSRC_FRAME_END	(1 << 26)
-#define S5PCSIS_INTSRC_ERR_SOT_HS	(0xf << 12)
-#define S5PCSIS_INTSRC_ERR_LOST_FS	(1 << 5)
-#define S5PCSIS_INTSRC_ERR_LOST_FE	(1 << 4)
-#define S5PCSIS_INTSRC_ERR_OVER		(1 << 3)
-#define S5PCSIS_INTSRC_ERR_ECC		(1 << 2)
-#define S5PCSIS_INTSRC_ERR_CRC		(1 << 1)
-#define S5PCSIS_INTSRC_ERR_UNKNOWN	(1 << 0)
-#define S5PCSIS_INTSRC_ERRORS		0xf03f
-
-/* Pixel resolution */
-#define S5PCSIS_RESOL			0x2c
-#define CSIS_MAX_PIX_WIDTH		0xffff
-#define CSIS_MAX_PIX_HEIGHT		0xffff
-
-/* Non-image packet data buffers */
-#define S5PCSIS_PKTDATA_ODD		0x2000
-#define S5PCSIS_PKTDATA_EVEN		0x3000
-#define S5PCSIS_PKTDATA_SIZE		SZ_4K
-
-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)
-#define DEFAULT_SCLK_CSIS_FREQ	166000000UL
-
-static const char * const csis_supply_name[] = {
-	"vddcore",  /* CSIS Core (1.0V, 1.1V or 1.2V) suppply */
-	"vddio",    /* CSIS I/O and PLL (1.8V) supply */
-};
-#define CSIS_NUM_SUPPLIES ARRAY_SIZE(csis_supply_name)
-
-enum {
-	ST_POWERED	= 1,
-	ST_STREAMING	= 2,
-	ST_SUSPENDED	= 4,
-};
-
-struct s5pcsis_event {
-	u32 mask;
-	const char * const name;
-	unsigned int counter;
-};
-
-static const struct s5pcsis_event s5pcsis_events[] = {
-	/* Errors */
-	{ S5PCSIS_INTSRC_ERR_SOT_HS,	"SOT Error" },
-	{ S5PCSIS_INTSRC_ERR_LOST_FS,	"Lost Frame Start Error" },
-	{ S5PCSIS_INTSRC_ERR_LOST_FE,	"Lost Frame End Error" },
-	{ S5PCSIS_INTSRC_ERR_OVER,	"FIFO Overflow Error" },
-	{ S5PCSIS_INTSRC_ERR_ECC,	"ECC Error" },
-	{ S5PCSIS_INTSRC_ERR_CRC,	"CRC Error" },
-	{ S5PCSIS_INTSRC_ERR_UNKNOWN,	"Unknown Error" },
-	/* Non-image data receive events */
-	{ S5PCSIS_INTSRC_EVEN_BEFORE,	"Non-image data before even frame" },
-	{ S5PCSIS_INTSRC_EVEN_AFTER,	"Non-image data after even frame" },
-	{ S5PCSIS_INTSRC_ODD_BEFORE,	"Non-image data before odd frame" },
-	{ S5PCSIS_INTSRC_ODD_AFTER,	"Non-image data after odd frame" },
-	/* Frame start/end */
-	{ S5PCSIS_INTSRC_FRAME_START,	"Frame Start" },
-	{ S5PCSIS_INTSRC_FRAME_END,	"Frame End" },
-};
-#define S5PCSIS_NUM_EVENTS ARRAY_SIZE(s5pcsis_events)
-
-struct csis_pktbuf {
-	u32 *data;
-	unsigned int len;
-};
-
-struct csis_drvdata {
-	/* Mask of all used interrupts in S5PCSIS_INTMSK register */
-	u32 interrupt_mask;
-};
-
-/**
- * struct csis_state - the driver's internal state data structure
- * @lock: mutex serializing the subdev and power management operations,
- *        protecting @format and @flags members
- * @pads: CSIS pads array
- * @sd: v4l2_subdev associated with CSIS device instance
- * @index: the hardware instance index
- * @pdev: CSIS platform device
- * @phy: pointer to the CSIS generic PHY
- * @regs: mmapped I/O registers memory
- * @supplies: CSIS regulator supplies
- * @clock: CSIS clocks
- * @irq: requested s5p-mipi-csis irq number
- * @interrupt_mask: interrupt mask of the all used interrupts
- * @flags: the state variable for power and streaming control
- * @clk_frequency: device bus clock frequency
- * @hs_settle: HS-RX settle time
- * @num_lanes: number of MIPI-CSI data lanes used
- * @max_num_lanes: maximum number of MIPI-CSI data lanes supported
- * @wclk_ext: CSI wrapper clock: 0 - bus clock, 1 - external SCLK_CAM
- * @csis_fmt: current CSIS pixel format
- * @format: common media bus format for the source and sink pad
- * @slock: spinlock protecting structure members below
- * @pkt_buf: the frame embedded (non-image) data buffer
- * @events: MIPI-CSIS event (error) counters
- */
-struct csis_state {
-	struct mutex lock;
-	struct media_pad pads[CSIS_PADS_NUM];
-	struct v4l2_subdev sd;
-	u8 index;
-	struct platform_device *pdev;
-	struct phy *phy;
-	void __iomem *regs;
-	struct regulator_bulk_data supplies[CSIS_NUM_SUPPLIES];
-	struct clk *clock[NUM_CSIS_CLOCKS];
-	int irq;
-	u32 interrupt_mask;
-	u32 flags;
-
-	u32 clk_frequency;
-	u32 hs_settle;
-	u32 num_lanes;
-	u32 max_num_lanes;
-	u8 wclk_ext;
-
-	const struct csis_pix_format *csis_fmt;
-	struct v4l2_mbus_framefmt format;
-
-	spinlock_t slock;
-	struct csis_pktbuf pkt_buf;
-	struct s5pcsis_event events[S5PCSIS_NUM_EVENTS];
-};
-
-/**
- * struct csis_pix_format - CSIS pixel format description
- * @pix_width_alignment: horizontal pixel alignment, width will be
- *                       multiple of 2^pix_width_alignment
- * @code: corresponding media bus code
- * @fmt_reg: S5PCSIS_CONFIG register value
- * @data_alignment: MIPI-CSI data alignment in bits
- */
-struct csis_pix_format {
-	unsigned int pix_width_alignment;
-	u32 code;
-	u32 fmt_reg;
-	u8 data_alignment;
-};
-
-static const struct csis_pix_format s5pcsis_formats[] = {
-	{
-		.code = MEDIA_BUS_FMT_VYUY8_2X8,
-		.fmt_reg = S5PCSIS_CFG_FMT_YCBCR422_8BIT,
-		.data_alignment = 32,
-	}, {
-		.code = MEDIA_BUS_FMT_JPEG_1X8,
-		.fmt_reg = S5PCSIS_CFG_FMT_USER(1),
-		.data_alignment = 32,
-	}, {
-		.code = MEDIA_BUS_FMT_S5C_UYVY_JPEG_1X8,
-		.fmt_reg = S5PCSIS_CFG_FMT_USER(1),
-		.data_alignment = 32,
-	}, {
-		.code = MEDIA_BUS_FMT_SGRBG8_1X8,
-		.fmt_reg = S5PCSIS_CFG_FMT_RAW8,
-		.data_alignment = 24,
-	}, {
-		.code = MEDIA_BUS_FMT_SGRBG10_1X10,
-		.fmt_reg = S5PCSIS_CFG_FMT_RAW10,
-		.data_alignment = 24,
-	}, {
-		.code = MEDIA_BUS_FMT_SGRBG12_1X12,
-		.fmt_reg = S5PCSIS_CFG_FMT_RAW12,
-		.data_alignment = 24,
-	}
-};
-
-#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);
-	if (on)
-		val |= state->interrupt_mask;
-	else
-		val &= ~state->interrupt_mask;
-	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, int on)
-{
-	u32 val, mask;
-
-	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);
-	val &= ~S5PCSIS_DPHYCTRL_ENABLE;
-	if (on) {
-		mask = (1 << (state->num_lanes + 1)) - 1;
-		val |= (mask & 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: %#x, %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 = (val & ~S5PCSIS_DPHYCTRL_HSS_MASK) | (settle << 27);
-	s5pcsis_write(state, S5PCSIS_DPHYCTRL, val);
-}
-
-static void s5pcsis_set_params(struct csis_state *state)
-{
-	u32 val;
-
-	val = s5pcsis_read(state, S5PCSIS_CONFIG);
-	val = (val & ~S5PCSIS_CFG_NR_LANE_MASK) | (state->num_lanes - 1);
-	s5pcsis_write(state, S5PCSIS_CONFIG, val);
-
-	__s5pcsis_set_format(state);
-	s5pcsis_set_hsync_settle(state, state->hs_settle);
-
-	val = s5pcsis_read(state, S5PCSIS_CTRL);
-	if (state->csis_fmt->data_alignment == 32)
-		val |= S5PCSIS_CTRL_ALIGN_32BIT;
-	else /* 24-bits */
-		val &= ~S5PCSIS_CTRL_ALIGN_32BIT;
-
-	val &= ~S5PCSIS_CTRL_WCLK_EXTCLK;
-	if (state->wclk_ext)
-		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(state->clock[i]))
-			continue;
-		clk_unprepare(state->clock[i]);
-		clk_put(state->clock[i]);
-		state->clock[i] = ERR_PTR(-EINVAL);
-	}
-}
-
-static int s5pcsis_clk_get(struct csis_state *state)
-{
-	struct device *dev = &state->pdev->dev;
-	int i, ret;
-
-	for (i = 0; i < NUM_CSIS_CLOCKS; i++)
-		state->clock[i] = ERR_PTR(-EINVAL);
-
-	for (i = 0; i < NUM_CSIS_CLOCKS; i++) {
-		state->clock[i] = clk_get(dev, csi_clock_name[i]);
-		if (IS_ERR(state->clock[i])) {
-			ret = PTR_ERR(state->clock[i]);
-			goto err;
-		}
-		ret = clk_prepare(state->clock[i]);
-		if (ret < 0) {
-			clk_put(state->clock[i]);
-			state->clock[i] = ERR_PTR(-EINVAL);
-			goto err;
-		}
-	}
-	return 0;
-err:
-	s5pcsis_clk_put(state);
-	dev_err(dev, "failed to get clock: %s\n", csi_clock_name[i]);
-	return ret;
-}
-
-static void dump_regs(struct csis_state *state, const char *label)
-{
-	struct {
-		u32 offset;
-		const char * const name;
-	} registers[] = {
-		{ 0x00, "CTRL" },
-		{ 0x04, "DPHYCTRL" },
-		{ 0x08, "CONFIG" },
-		{ 0x0c, "DPHYSTS" },
-		{ 0x10, "INTMSK" },
-		{ 0x2c, "RESOL" },
-		{ 0x38, "SDW_CONFIG" },
-	};
-	u32 i;
-
-	v4l2_info(&state->sd, "--- %s ---\n", label);
-
-	for (i = 0; i < ARRAY_SIZE(registers); i++) {
-		u32 cfg = s5pcsis_read(state, registers[i].offset);
-		v4l2_info(&state->sd, "%10s: 0x%08x\n", registers[i].name, cfg);
-	}
-}
-
-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);
-}
-
-static void s5pcsis_clear_counters(struct csis_state *state)
-{
-	unsigned long flags;
-	int i;
-
-	spin_lock_irqsave(&state->slock, flags);
-	for (i = 0; i < S5PCSIS_NUM_EVENTS; i++)
-		state->events[i].counter = 0;
-	spin_unlock_irqrestore(&state->slock, flags);
-}
-
-static void s5pcsis_log_counters(struct csis_state *state, bool non_errors)
-{
-	int i = non_errors ? S5PCSIS_NUM_EVENTS : S5PCSIS_NUM_EVENTS - 4;
-	unsigned long flags;
-
-	spin_lock_irqsave(&state->slock, flags);
-
-	for (i--; i >= 0; i--) {
-		if (state->events[i].counter > 0 || debug)
-			v4l2_info(&state->sd, "%s events: %d\n",
-				  state->events[i].name,
-				  state->events[i].counter);
-	}
-	spin_unlock_irqrestore(&state->slock, flags);
-}
-
-/*
- * V4L2 subdev operations
- */
-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_resume_and_get(dev);
-
-	return pm_runtime_put_sync(dev);
-}
-
-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) {
-		s5pcsis_clear_counters(state);
-		ret = pm_runtime_resume_and_get(&state->pdev->dev);
-		if (ret < 0)
-			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;
-		if (debug > 0)
-			s5pcsis_log_counters(state, true);
-	}
-unlock:
-	mutex_unlock(&state->lock);
-	if (!enable)
-		pm_runtime_put(&state->pdev->dev);
-
-	return ret;
-}
-
-static int s5pcsis_enum_mbus_code(struct v4l2_subdev *sd,
-				  struct v4l2_subdev_state *sd_state,
-				  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_state *sd_state,
-		enum v4l2_subdev_format_whence which)
-{
-	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return sd_state ? v4l2_subdev_get_try_format(&state->sd,
-							     sd_state, 0) : NULL;
-
-	return &state->format;
-}
-
-static int s5pcsis_set_fmt(struct v4l2_subdev *sd,
-			   struct v4l2_subdev_state *sd_state,
-			   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, sd_state, 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 (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE)
-			state->csis_fmt = csis_fmt;
-		mutex_unlock(&state->lock);
-	}
-	return 0;
-}
-
-static int s5pcsis_get_fmt(struct v4l2_subdev *sd,
-			   struct v4l2_subdev_state *sd_state,
-			   struct v4l2_subdev_format *fmt)
-{
-	struct csis_state *state = sd_to_csis_state(sd);
-	struct v4l2_mbus_framefmt *mf;
-
-	mf = __s5pcsis_get_format(state, sd_state, fmt->which);
-	if (!mf)
-		return -EINVAL;
-
-	mutex_lock(&state->lock);
-	fmt->format = *mf;
-	mutex_unlock(&state->lock);
-	return 0;
-}
-
-static int s5pcsis_s_rx_buffer(struct v4l2_subdev *sd, void *buf,
-			       unsigned int *size)
-{
-	struct csis_state *state = sd_to_csis_state(sd);
-	unsigned long flags;
-
-	*size = min_t(unsigned int, *size, S5PCSIS_PKTDATA_SIZE);
-
-	spin_lock_irqsave(&state->slock, flags);
-	state->pkt_buf.data = buf;
-	state->pkt_buf.len = *size;
-	spin_unlock_irqrestore(&state->slock, flags);
-
-	return 0;
-}
-
-static int s5pcsis_log_status(struct v4l2_subdev *sd)
-{
-	struct csis_state *state = sd_to_csis_state(sd);
-
-	mutex_lock(&state->lock);
-	s5pcsis_log_counters(state, true);
-	if (debug && (state->flags & ST_POWERED))
-		dump_regs(state, __func__);
-	mutex_unlock(&state->lock);
-	return 0;
-}
-
-static const struct v4l2_subdev_core_ops s5pcsis_core_ops = {
-	.s_power = s5pcsis_s_power,
-	.log_status = s5pcsis_log_status,
-};
-
-static const 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 const struct v4l2_subdev_video_ops s5pcsis_video_ops = {
-	.s_rx_buffer = s5pcsis_s_rx_buffer,
-	.s_stream = s5pcsis_s_stream,
-};
-
-static const 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;
-	struct csis_pktbuf *pktbuf = &state->pkt_buf;
-	unsigned long flags;
-	u32 status;
-
-	status = s5pcsis_read(state, S5PCSIS_INTSRC);
-	spin_lock_irqsave(&state->slock, flags);
-
-	if ((status & S5PCSIS_INTSRC_NON_IMAGE_DATA) && pktbuf->data) {
-		u32 offset;
-
-		if (status & S5PCSIS_INTSRC_EVEN)
-			offset = S5PCSIS_PKTDATA_EVEN;
-		else
-			offset = S5PCSIS_PKTDATA_ODD;
-
-		memcpy(pktbuf->data, (u8 __force *)state->regs + offset,
-		       pktbuf->len);
-		pktbuf->data = NULL;
-		rmb();
-	}
-
-	/* Update the event/error counters */
-	if ((status & S5PCSIS_INTSRC_ERRORS) || debug) {
-		int i;
-		for (i = 0; i < S5PCSIS_NUM_EVENTS; i++) {
-			if (!(status & state->events[i].mask))
-				continue;
-			state->events[i].counter++;
-			v4l2_dbg(2, debug, &state->sd, "%s: %d\n",
-				 state->events[i].name,
-				 state->events[i].counter);
-		}
-		v4l2_dbg(2, debug, &state->sd, "status: %08x\n", status);
-	}
-	spin_unlock_irqrestore(&state->slock, flags);
-
-	s5pcsis_write(state, S5PCSIS_INTSRC, status);
-	return IRQ_HANDLED;
-}
-
-static int s5pcsis_parse_dt(struct platform_device *pdev,
-			    struct csis_state *state)
-{
-	struct device_node *node = pdev->dev.of_node;
-	struct v4l2_fwnode_endpoint endpoint = { .bus_type = 0 };
-	int ret;
-
-	if (of_property_read_u32(node, "clock-frequency",
-				 &state->clk_frequency))
-		state->clk_frequency = DEFAULT_SCLK_CSIS_FREQ;
-	if (of_property_read_u32(node, "bus-width",
-				 &state->max_num_lanes))
-		return -EINVAL;
-
-	node = of_graph_get_next_endpoint(node, NULL);
-	if (!node) {
-		dev_err(&pdev->dev, "No port node at %pOF\n",
-				pdev->dev.of_node);
-		return -EINVAL;
-	}
-	/* Get port node and validate MIPI-CSI channel id. */
-	ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(node), &endpoint);
-	if (ret)
-		goto err;
-
-	state->index = endpoint.base.port - FIMC_INPUT_MIPI_CSI2_0;
-	if (state->index >= CSIS_MAX_ENTITIES) {
-		ret = -ENXIO;
-		goto err;
-	}
-
-	/* Get MIPI CSI-2 bus configuration from the endpoint node. */
-	of_property_read_u32(node, "samsung,csis-hs-settle",
-					&state->hs_settle);
-	state->wclk_ext = of_property_read_bool(node,
-					"samsung,csis-wclk");
-
-	state->num_lanes = endpoint.bus.mipi_csi2.num_data_lanes;
-
-err:
-	of_node_put(node);
-	return ret;
-}
-
-static int s5pcsis_pm_resume(struct device *dev, bool runtime);
-static const struct of_device_id s5pcsis_of_match[];
-
-static int s5pcsis_probe(struct platform_device *pdev)
-{
-	const struct of_device_id *of_id;
-	const struct csis_drvdata *drv_data;
-	struct device *dev = &pdev->dev;
-	struct csis_state *state;
-	int ret = -ENOMEM;
-	int i;
-
-	state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL);
-	if (!state)
-		return -ENOMEM;
-
-	mutex_init(&state->lock);
-	spin_lock_init(&state->slock);
-	state->pdev = pdev;
-
-	of_id = of_match_node(s5pcsis_of_match, dev->of_node);
-	if (WARN_ON(of_id == NULL))
-		return -EINVAL;
-
-	drv_data = of_id->data;
-	state->interrupt_mask = drv_data->interrupt_mask;
-
-	ret = s5pcsis_parse_dt(pdev, state);
-	if (ret < 0)
-		return ret;
-
-	if (state->num_lanes == 0 || state->num_lanes > state->max_num_lanes) {
-		dev_err(dev, "Unsupported number of data lanes: %d (max. %d)\n",
-			state->num_lanes, state->max_num_lanes);
-		return -EINVAL;
-	}
-
-	state->phy = devm_phy_get(dev, "csis");
-	if (IS_ERR(state->phy))
-		return PTR_ERR(state->phy);
-
-	state->regs = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(state->regs))
-		return PTR_ERR(state->regs);
-
-	state->irq = platform_get_irq(pdev, 0);
-	if (state->irq < 0)
-		return state->irq;
-
-	for (i = 0; i < CSIS_NUM_SUPPLIES; i++)
-		state->supplies[i].supply = csis_supply_name[i];
-
-	ret = devm_regulator_bulk_get(dev, CSIS_NUM_SUPPLIES,
-				 state->supplies);
-	if (ret)
-		return ret;
-
-	ret = s5pcsis_clk_get(state);
-	if (ret < 0)
-		return ret;
-
-	if (state->clk_frequency)
-		ret = clk_set_rate(state->clock[CSIS_CLK_MUX],
-				   state->clk_frequency);
-	else
-		dev_WARN(dev, "No clock frequency specified!\n");
-	if (ret < 0)
-		goto e_clkput;
-
-	ret = clk_enable(state->clock[CSIS_CLK_MUX]);
-	if (ret < 0)
-		goto e_clkput;
-
-	ret = devm_request_irq(dev, state->irq, s5pcsis_irq_handler,
-			       0, dev_name(dev), state);
-	if (ret) {
-		dev_err(dev, "Interrupt request failed\n");
-		goto e_clkdis;
-	}
-
-	v4l2_subdev_init(&state->sd, &s5pcsis_subdev_ops);
-	state->sd.owner = THIS_MODULE;
-	snprintf(state->sd.name, sizeof(state->sd.name), "%s.%d",
-		 CSIS_SUBDEV_NAME, state->index);
-	state->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
-	state->csis_fmt = &s5pcsis_formats[0];
-
-	state->format.code = s5pcsis_formats[0].code;
-	state->format.width = S5PCSIS_DEF_PIX_WIDTH;
-	state->format.height = S5PCSIS_DEF_PIX_HEIGHT;
-
-	state->sd.entity.function = MEDIA_ENT_F_IO_V4L;
-	state->pads[CSIS_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
-	state->pads[CSIS_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
-	ret = media_entity_pads_init(&state->sd.entity,
-				CSIS_PADS_NUM, state->pads);
-	if (ret < 0)
-		goto e_clkdis;
-
-	/* 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);
-	memcpy(state->events, s5pcsis_events, sizeof(state->events));
-
-	pm_runtime_enable(dev);
-	if (!pm_runtime_enabled(dev)) {
-		ret = s5pcsis_pm_resume(dev, true);
-		if (ret < 0)
-			goto e_m_ent;
-	}
-
-	dev_info(&pdev->dev, "lanes: %d, hs_settle: %d, wclk: %d, freq: %u\n",
-		 state->num_lanes, state->hs_settle, state->wclk_ext,
-		 state->clk_frequency);
-	return 0;
-
-e_m_ent:
-	media_entity_cleanup(&state->sd.entity);
-e_clkdis:
-	clk_disable(state->clock[CSIS_CLK_MUX]);
-e_clkput:
-	s5pcsis_clk_put(state);
-	return ret;
-}
-
-static int s5pcsis_pm_suspend(struct device *dev, bool runtime)
-{
-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
-	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_POWERED) {
-		s5pcsis_stop_stream(state);
-		ret = phy_power_off(state->phy);
-		if (ret)
-			goto unlock;
-		ret = regulator_bulk_disable(CSIS_NUM_SUPPLIES,
-					     state->supplies);
-		if (ret)
-			goto unlock;
-		clk_disable(state->clock[CSIS_CLK_GATE]);
-		state->flags &= ~ST_POWERED;
-		if (!runtime)
-			state->flags |= ST_SUSPENDED;
-	}
- unlock:
-	mutex_unlock(&state->lock);
-	return ret ? -EAGAIN : 0;
-}
-
-static int s5pcsis_pm_resume(struct device *dev, bool runtime)
-{
-	struct v4l2_subdev *sd = dev_get_drvdata(dev);
-	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 (!runtime && !(state->flags & ST_SUSPENDED))
-		goto unlock;
-
-	if (!(state->flags & ST_POWERED)) {
-		ret = regulator_bulk_enable(CSIS_NUM_SUPPLIES,
-					    state->supplies);
-		if (ret)
-			goto unlock;
-		ret = phy_power_on(state->phy);
-		if (!ret) {
-			state->flags |= ST_POWERED;
-		} else {
-			regulator_bulk_disable(CSIS_NUM_SUPPLIES,
-					       state->supplies);
-			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_suspend(struct device *dev)
-{
-	return s5pcsis_pm_suspend(dev, false);
-}
-
-static int s5pcsis_resume(struct device *dev)
-{
-	return s5pcsis_pm_resume(dev, false);
-}
-#endif
-
-#ifdef CONFIG_PM
-static int s5pcsis_runtime_suspend(struct device *dev)
-{
-	return s5pcsis_pm_suspend(dev, true);
-}
-
-static int s5pcsis_runtime_resume(struct device *dev)
-{
-	return s5pcsis_pm_resume(dev, true);
-}
-#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);
-
-	pm_runtime_disable(&pdev->dev);
-	s5pcsis_pm_suspend(&pdev->dev, true);
-	clk_disable(state->clock[CSIS_CLK_MUX]);
-	pm_runtime_set_suspended(&pdev->dev);
-	s5pcsis_clk_put(state);
-
-	media_entity_cleanup(&state->sd.entity);
-
-	return 0;
-}
-
-static const struct dev_pm_ops s5pcsis_pm_ops = {
-	SET_RUNTIME_PM_OPS(s5pcsis_runtime_suspend, s5pcsis_runtime_resume,
-			   NULL)
-	SET_SYSTEM_SLEEP_PM_OPS(s5pcsis_suspend, s5pcsis_resume)
-};
-
-static const struct csis_drvdata exynos4_csis_drvdata = {
-	.interrupt_mask = S5PCSIS_INTMSK_EXYNOS4_EN_ALL,
-};
-
-static const struct csis_drvdata exynos5_csis_drvdata = {
-	.interrupt_mask = S5PCSIS_INTMSK_EXYNOS5_EN_ALL,
-};
-
-static const struct of_device_id s5pcsis_of_match[] = {
-	{
-		.compatible = "samsung,s5pv210-csis",
-		.data = &exynos4_csis_drvdata,
-	}, {
-		.compatible = "samsung,exynos4210-csis",
-		.data = &exynos4_csis_drvdata,
-	}, {
-		.compatible = "samsung,exynos5250-csis",
-		.data = &exynos5_csis_drvdata,
-	},
-	{ /* sentinel */ },
-};
-MODULE_DEVICE_TABLE(of, s5pcsis_of_match);
-
-static struct platform_driver s5pcsis_driver = {
-	.probe		= s5pcsis_probe,
-	.remove		= s5pcsis_remove,
-	.driver		= {
-		.of_match_table = s5pcsis_of_match,
-		.name		= CSIS_DRIVER_NAME,
-		.pm		= &s5pcsis_pm_ops,
-	},
-};
-
-module_platform_driver(s5pcsis_driver);
-
-MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
-MODULE_DESCRIPTION("Samsung S5P/EXYNOS SoC MIPI-CSI2 receiver driver");
-MODULE_LICENSE("GPL");