drivers/media/platform/exynos4-is/fimc-lite-reg.c - third_party/linux - Git at Google

 /*
  * Register interface file for EXYNOS FIMC-LITE (camera interface) driver
  *
  * Copyright (C) 2012 Samsung Electronics Co., Ltd.
  * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
  *
  * 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/bitops.h>
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <media/drv-intf/exynos-fimc.h>

 #include "fimc-lite-reg.h"
 #include "fimc-lite.h"
 #include "fimc-core.h"

 #define FLITE_RESET_TIMEOUT 50 /* in ms */

 void flite_hw_reset(struct fimc_lite *dev)
 {
 	unsigned long end = jiffies + msecs_to_jiffies(FLITE_RESET_TIMEOUT);
 	u32 cfg;

 	cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
 	cfg |= FLITE_REG_CIGCTRL_SWRST_REQ;
 	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);

 	while (time_is_after_jiffies(end)) {
 		cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
 		if (cfg & FLITE_REG_CIGCTRL_SWRST_RDY)
 			break;
 		usleep_range(1000, 5000);
 	}

 	cfg |= FLITE_REG_CIGCTRL_SWRST;
 	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);
 }

 void flite_hw_clear_pending_irq(struct fimc_lite *dev)
 {
 	u32 cfg = readl(dev->regs + FLITE_REG_CISTATUS);
 	cfg &= ~FLITE_REG_CISTATUS_IRQ_CAM;
 	writel(cfg, dev->regs + FLITE_REG_CISTATUS);
 }

 u32 flite_hw_get_interrupt_source(struct fimc_lite *dev)
 {
 	u32 intsrc = readl(dev->regs + FLITE_REG_CISTATUS);
 	return intsrc & FLITE_REG_CISTATUS_IRQ_MASK;
 }

 void flite_hw_clear_last_capture_end(struct fimc_lite *dev)
 {

 	u32 cfg = readl(dev->regs + FLITE_REG_CISTATUS2);
 	cfg &= ~FLITE_REG_CISTATUS2_LASTCAPEND;
 	writel(cfg, dev->regs + FLITE_REG_CISTATUS2);
 }

 void flite_hw_set_interrupt_mask(struct fimc_lite *dev)
 {
 	u32 cfg, intsrc;

 	/* Select interrupts to be enabled for each output mode */
 	if (atomic_read(&dev->out_path) == FIMC_IO_DMA) {
 		intsrc = FLITE_REG_CIGCTRL_IRQ_OVFEN |
 			 FLITE_REG_CIGCTRL_IRQ_LASTEN |
 			 FLITE_REG_CIGCTRL_IRQ_STARTEN |
 			 FLITE_REG_CIGCTRL_IRQ_ENDEN;
 	} else {
 		/* An output to the FIMC-IS */
 		intsrc = FLITE_REG_CIGCTRL_IRQ_OVFEN |
 			 FLITE_REG_CIGCTRL_IRQ_LASTEN;
 	}

 	cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
 	cfg |= FLITE_REG_CIGCTRL_IRQ_DISABLE_MASK;
 	cfg &= ~intsrc;
 	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);
 }

 void flite_hw_capture_start(struct fimc_lite *dev)
 {
 	u32 cfg = readl(dev->regs + FLITE_REG_CIIMGCPT);
 	cfg |= FLITE_REG_CIIMGCPT_IMGCPTEN;
 	writel(cfg, dev->regs + FLITE_REG_CIIMGCPT);
 }

 void flite_hw_capture_stop(struct fimc_lite *dev)
 {
 	u32 cfg = readl(dev->regs + FLITE_REG_CIIMGCPT);
 	cfg &= ~FLITE_REG_CIIMGCPT_IMGCPTEN;
 	writel(cfg, dev->regs + FLITE_REG_CIIMGCPT);
 }

 /*
  * Test pattern (color bars) enable/disable. External sensor
  * pixel clock must be active for the test pattern to work.
  */
 void flite_hw_set_test_pattern(struct fimc_lite *dev, bool on)
 {
 	u32 cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
 	if (on)
 		cfg |= FLITE_REG_CIGCTRL_TEST_PATTERN_COLORBAR;
 	else
 		cfg &= ~FLITE_REG_CIGCTRL_TEST_PATTERN_COLORBAR;
 	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);
 }

 static const u32 src_pixfmt_map[8][3] = {
 	{ MEDIA_BUS_FMT_YUYV8_2X8, FLITE_REG_CISRCSIZE_ORDER422_IN_YCBYCR,
 	  FLITE_REG_CIGCTRL_YUV422_1P },
 	{ MEDIA_BUS_FMT_YVYU8_2X8, FLITE_REG_CISRCSIZE_ORDER422_IN_YCRYCB,
 	  FLITE_REG_CIGCTRL_YUV422_1P },
 	{ MEDIA_BUS_FMT_UYVY8_2X8, FLITE_REG_CISRCSIZE_ORDER422_IN_CBYCRY,
 	  FLITE_REG_CIGCTRL_YUV422_1P },
 	{ MEDIA_BUS_FMT_VYUY8_2X8, FLITE_REG_CISRCSIZE_ORDER422_IN_CRYCBY,
 	  FLITE_REG_CIGCTRL_YUV422_1P },
 	{ MEDIA_BUS_FMT_SGRBG8_1X8, 0, FLITE_REG_CIGCTRL_RAW8 },
 	{ MEDIA_BUS_FMT_SGRBG10_1X10, 0, FLITE_REG_CIGCTRL_RAW10 },
 	{ MEDIA_BUS_FMT_SGRBG12_1X12, 0, FLITE_REG_CIGCTRL_RAW12 },
 	{ MEDIA_BUS_FMT_JPEG_1X8, 0, FLITE_REG_CIGCTRL_USER(1) },
 };

 /* Set camera input pixel format and resolution */
 void flite_hw_set_source_format(struct fimc_lite *dev, struct flite_frame *f)
 {
 	u32 pixelcode = f->fmt->mbus_code;
 	int i = ARRAY_SIZE(src_pixfmt_map);
 	u32 cfg;

 	while (--i) {
 		if (src_pixfmt_map[i][0] == pixelcode)
 			break;
 	}

 	if (i == 0 && src_pixfmt_map[i][0] != pixelcode) {
 		v4l2_err(&dev->ve.vdev,
 			 "Unsupported pixel code, falling back to %#08x\n",
 			 src_pixfmt_map[i][0]);
 	}

 	cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
 	cfg &= ~FLITE_REG_CIGCTRL_FMT_MASK;
 	cfg |= src_pixfmt_map[i][2];
 	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);

 	cfg = readl(dev->regs + FLITE_REG_CISRCSIZE);
 	cfg &= ~(FLITE_REG_CISRCSIZE_ORDER422_MASK |
 		 FLITE_REG_CISRCSIZE_SIZE_CAM_MASK);
 	cfg |= (f->f_width << 16) | f->f_height;
 	cfg |= src_pixfmt_map[i][1];
 	writel(cfg, dev->regs + FLITE_REG_CISRCSIZE);
 }

 /* Set the camera host input window offsets (cropping) */
 void flite_hw_set_window_offset(struct fimc_lite *dev, struct flite_frame *f)
 {
 	u32 hoff2, voff2;
 	u32 cfg;

 	cfg = readl(dev->regs + FLITE_REG_CIWDOFST);
 	cfg &= ~FLITE_REG_CIWDOFST_OFST_MASK;
 	cfg |= (f->rect.left << 16) | f->rect.top;
 	cfg |= FLITE_REG_CIWDOFST_WINOFSEN;
 	writel(cfg, dev->regs + FLITE_REG_CIWDOFST);

 	hoff2 = f->f_width - f->rect.width - f->rect.left;
 	voff2 = f->f_height - f->rect.height - f->rect.top;

 	cfg = (hoff2 << 16) | voff2;
 	writel(cfg, dev->regs + FLITE_REG_CIWDOFST2);
 }

 /* Select camera port (A, B) */
 static void flite_hw_set_camera_port(struct fimc_lite *dev, int id)
 {
 	u32 cfg = readl(dev->regs + FLITE_REG_CIGENERAL);
 	if (id == 0)
 		cfg &= ~FLITE_REG_CIGENERAL_CAM_B;
 	else
 		cfg |= FLITE_REG_CIGENERAL_CAM_B;
 	writel(cfg, dev->regs + FLITE_REG_CIGENERAL);
 }

 /* Select serial or parallel bus, camera port (A,B) and set signals polarity */
 void flite_hw_set_camera_bus(struct fimc_lite *dev,
 			     struct fimc_source_info *si)
 {
 	u32 cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
 	unsigned int flags = si->flags;

 	if (si->sensor_bus_type != FIMC_BUS_TYPE_MIPI_CSI2) {
 		cfg &= ~(FLITE_REG_CIGCTRL_SELCAM_MIPI |
 			 FLITE_REG_CIGCTRL_INVPOLPCLK |
 			 FLITE_REG_CIGCTRL_INVPOLVSYNC |
 			 FLITE_REG_CIGCTRL_INVPOLHREF);

 		if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
 			cfg |= FLITE_REG_CIGCTRL_INVPOLPCLK;

 		if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
 			cfg |= FLITE_REG_CIGCTRL_INVPOLVSYNC;

 		if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
 			cfg |= FLITE_REG_CIGCTRL_INVPOLHREF;
 	} else {
 		cfg |= FLITE_REG_CIGCTRL_SELCAM_MIPI;
 	}

 	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);

 	flite_hw_set_camera_port(dev, si->mux_id);
 }

 static void flite_hw_set_pack12(struct fimc_lite *dev, int on)
 {
 	u32 cfg = readl(dev->regs + FLITE_REG_CIODMAFMT);

 	cfg &= ~FLITE_REG_CIODMAFMT_PACK12;

 	if (on)
 		cfg |= FLITE_REG_CIODMAFMT_PACK12;

 	writel(cfg, dev->regs + FLITE_REG_CIODMAFMT);
 }

 static void flite_hw_set_out_order(struct fimc_lite *dev, struct flite_frame *f)
 {
 	static const u32 pixcode[4][2] = {
 		{ MEDIA_BUS_FMT_YUYV8_2X8, FLITE_REG_CIODMAFMT_YCBYCR },
 		{ MEDIA_BUS_FMT_YVYU8_2X8, FLITE_REG_CIODMAFMT_YCRYCB },
 		{ MEDIA_BUS_FMT_UYVY8_2X8, FLITE_REG_CIODMAFMT_CBYCRY },
 		{ MEDIA_BUS_FMT_VYUY8_2X8, FLITE_REG_CIODMAFMT_CRYCBY },
 	};
 	u32 cfg = readl(dev->regs + FLITE_REG_CIODMAFMT);
 	int i = ARRAY_SIZE(pixcode);

 	while (--i)
 		if (pixcode[i][0] == f->fmt->mbus_code)
 			break;
 	cfg &= ~FLITE_REG_CIODMAFMT_YCBCR_ORDER_MASK;
 	writel(cfg | pixcode[i][1], dev->regs + FLITE_REG_CIODMAFMT);
 }

 void flite_hw_set_dma_window(struct fimc_lite *dev, struct flite_frame *f)
 {
 	u32 cfg;

 	/* Maximum output pixel size */
 	cfg = readl(dev->regs + FLITE_REG_CIOCAN);
 	cfg &= ~FLITE_REG_CIOCAN_MASK;
 	cfg |= (f->f_height << 16) | f->f_width;
 	writel(cfg, dev->regs + FLITE_REG_CIOCAN);

 	/* DMA offsets */
 	cfg = readl(dev->regs + FLITE_REG_CIOOFF);
 	cfg &= ~FLITE_REG_CIOOFF_MASK;
 	cfg |= (f->rect.top << 16) | f->rect.left;
 	writel(cfg, dev->regs + FLITE_REG_CIOOFF);
 }

 void flite_hw_set_dma_buffer(struct fimc_lite *dev, struct flite_buffer *buf)
 {
 	unsigned int index;
 	u32 cfg;

 	if (dev->dd->max_dma_bufs == 1)
 		index = 0;
 	else
 		index = buf->index;

 	if (index == 0)
 		writel(buf->paddr, dev->regs + FLITE_REG_CIOSA);
 	else
 		writel(buf->paddr, dev->regs + FLITE_REG_CIOSAN(index - 1));

 	cfg = readl(dev->regs + FLITE_REG_CIFCNTSEQ);
 	cfg |= BIT(index);
 	writel(cfg, dev->regs + FLITE_REG_CIFCNTSEQ);
 }

 void flite_hw_mask_dma_buffer(struct fimc_lite *dev, u32 index)
 {
 	u32 cfg;

 	if (dev->dd->max_dma_bufs == 1)
 		index = 0;

 	cfg = readl(dev->regs + FLITE_REG_CIFCNTSEQ);
 	cfg &= ~BIT(index);
 	writel(cfg, dev->regs + FLITE_REG_CIFCNTSEQ);
 }

 /* Enable/disable output DMA, set output pixel size and offsets (composition) */
 void flite_hw_set_output_dma(struct fimc_lite *dev, struct flite_frame *f,
 			     bool enable)
 {
 	u32 cfg = readl(dev->regs + FLITE_REG_CIGCTRL);

 	if (!enable) {
 		cfg |= FLITE_REG_CIGCTRL_ODMA_DISABLE;
 		writel(cfg, dev->regs + FLITE_REG_CIGCTRL);
 		return;
 	}

 	cfg &= ~FLITE_REG_CIGCTRL_ODMA_DISABLE;
 	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);

 	flite_hw_set_out_order(dev, f);
 	flite_hw_set_dma_window(dev, f);
 	flite_hw_set_pack12(dev, 0);
 }

 void flite_hw_dump_regs(struct fimc_lite *dev, const char *label)
 {
 	struct {
 		u32 offset;
 		const char * const name;
 	} registers[] = {
 		{ 0x00, "CISRCSIZE" },
 		{ 0x04, "CIGCTRL" },
 		{ 0x08, "CIIMGCPT" },
 		{ 0x0c, "CICPTSEQ" },
 		{ 0x10, "CIWDOFST" },
 		{ 0x14, "CIWDOFST2" },
 		{ 0x18, "CIODMAFMT" },
 		{ 0x20, "CIOCAN" },
 		{ 0x24, "CIOOFF" },
 		{ 0x30, "CIOSA" },
 		{ 0x40, "CISTATUS" },
 		{ 0x44, "CISTATUS2" },
 		{ 0xf0, "CITHOLD" },
 		{ 0xfc, "CIGENERAL" },
 	};
 	u32 i;

 	v4l2_info(&dev->subdev, "--- %s ---\n", label);

 	for (i = 0; i < ARRAY_SIZE(registers); i++) {
 		u32 cfg = readl(dev->regs + registers[i].offset);
 		v4l2_info(&dev->subdev, "%9s: 0x%08x\n",
 			  registers[i].name, cfg);
 	}
 }
	/*
	* Register interface file for EXYNOS FIMC-LITE (camera interface) driver
	*
	* Copyright (C) 2012 Samsung Electronics Co., Ltd.
	* Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
	*
	* 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/bitops.h>
	#include <linux/delay.h>
	#include <linux/io.h>
	#include <media/drv-intf/exynos-fimc.h>

	#include "fimc-lite-reg.h"
	#include "fimc-lite.h"
	#include "fimc-core.h"

	#define FLITE_RESET_TIMEOUT 50 /* in ms */

	void flite_hw_reset(struct fimc_lite *dev)
	{
	unsigned long end = jiffies + msecs_to_jiffies(FLITE_RESET_TIMEOUT);
	u32 cfg;

	cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
	cfg \|= FLITE_REG_CIGCTRL_SWRST_REQ;
	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);

	while (time_is_after_jiffies(end)) {
	cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
	if (cfg & FLITE_REG_CIGCTRL_SWRST_RDY)
	break;
	usleep_range(1000, 5000);
	}

	cfg \|= FLITE_REG_CIGCTRL_SWRST;
	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);
	}

	void flite_hw_clear_pending_irq(struct fimc_lite *dev)
	{
	u32 cfg = readl(dev->regs + FLITE_REG_CISTATUS);
	cfg &= ~FLITE_REG_CISTATUS_IRQ_CAM;
	writel(cfg, dev->regs + FLITE_REG_CISTATUS);
	}

	u32 flite_hw_get_interrupt_source(struct fimc_lite *dev)
	{
	u32 intsrc = readl(dev->regs + FLITE_REG_CISTATUS);
	return intsrc & FLITE_REG_CISTATUS_IRQ_MASK;
	}

	void flite_hw_clear_last_capture_end(struct fimc_lite *dev)
	{

	u32 cfg = readl(dev->regs + FLITE_REG_CISTATUS2);
	cfg &= ~FLITE_REG_CISTATUS2_LASTCAPEND;
	writel(cfg, dev->regs + FLITE_REG_CISTATUS2);
	}

	void flite_hw_set_interrupt_mask(struct fimc_lite *dev)
	{
	u32 cfg, intsrc;

	/* Select interrupts to be enabled for each output mode */
	if (atomic_read(&dev->out_path) == FIMC_IO_DMA) {
	intsrc = FLITE_REG_CIGCTRL_IRQ_OVFEN \|
	FLITE_REG_CIGCTRL_IRQ_LASTEN \|
	FLITE_REG_CIGCTRL_IRQ_STARTEN \|
	FLITE_REG_CIGCTRL_IRQ_ENDEN;
	} else {
	/* An output to the FIMC-IS */
	intsrc = FLITE_REG_CIGCTRL_IRQ_OVFEN \|
	FLITE_REG_CIGCTRL_IRQ_LASTEN;
	}

	cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
	cfg \|= FLITE_REG_CIGCTRL_IRQ_DISABLE_MASK;
	cfg &= ~intsrc;
	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);
	}

	void flite_hw_capture_start(struct fimc_lite *dev)
	{
	u32 cfg = readl(dev->regs + FLITE_REG_CIIMGCPT);
	cfg \|= FLITE_REG_CIIMGCPT_IMGCPTEN;
	writel(cfg, dev->regs + FLITE_REG_CIIMGCPT);
	}

	void flite_hw_capture_stop(struct fimc_lite *dev)
	{
	u32 cfg = readl(dev->regs + FLITE_REG_CIIMGCPT);
	cfg &= ~FLITE_REG_CIIMGCPT_IMGCPTEN;
	writel(cfg, dev->regs + FLITE_REG_CIIMGCPT);
	}

	/*
	* Test pattern (color bars) enable/disable. External sensor
	* pixel clock must be active for the test pattern to work.
	*/
	void flite_hw_set_test_pattern(struct fimc_lite *dev, bool on)
	{
	u32 cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
	if (on)
	cfg \|= FLITE_REG_CIGCTRL_TEST_PATTERN_COLORBAR;
	else
	cfg &= ~FLITE_REG_CIGCTRL_TEST_PATTERN_COLORBAR;
	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);
	}

	static const u32 src_pixfmt_map[8][3] = {
	{ MEDIA_BUS_FMT_YUYV8_2X8, FLITE_REG_CISRCSIZE_ORDER422_IN_YCBYCR,
	FLITE_REG_CIGCTRL_YUV422_1P },
	{ MEDIA_BUS_FMT_YVYU8_2X8, FLITE_REG_CISRCSIZE_ORDER422_IN_YCRYCB,
	FLITE_REG_CIGCTRL_YUV422_1P },
	{ MEDIA_BUS_FMT_UYVY8_2X8, FLITE_REG_CISRCSIZE_ORDER422_IN_CBYCRY,
	FLITE_REG_CIGCTRL_YUV422_1P },
	{ MEDIA_BUS_FMT_VYUY8_2X8, FLITE_REG_CISRCSIZE_ORDER422_IN_CRYCBY,
	FLITE_REG_CIGCTRL_YUV422_1P },
	{ MEDIA_BUS_FMT_SGRBG8_1X8, 0, FLITE_REG_CIGCTRL_RAW8 },
	{ MEDIA_BUS_FMT_SGRBG10_1X10, 0, FLITE_REG_CIGCTRL_RAW10 },
	{ MEDIA_BUS_FMT_SGRBG12_1X12, 0, FLITE_REG_CIGCTRL_RAW12 },
	{ MEDIA_BUS_FMT_JPEG_1X8, 0, FLITE_REG_CIGCTRL_USER(1) },
	};

	/* Set camera input pixel format and resolution */
	void flite_hw_set_source_format(struct fimc_lite dev, struct flite_frame f)
	{
	u32 pixelcode = f->fmt->mbus_code;
	int i = ARRAY_SIZE(src_pixfmt_map);
	u32 cfg;

	while (--i) {
	if (src_pixfmt_map[i][0] == pixelcode)
	break;
	}

	if (i == 0 && src_pixfmt_map[i][0] != pixelcode) {
	v4l2_err(&dev->ve.vdev,
	"Unsupported pixel code, falling back to %#08x\n",
	src_pixfmt_map[i][0]);
	}

	cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
	cfg &= ~FLITE_REG_CIGCTRL_FMT_MASK;
	cfg \|= src_pixfmt_map[i][2];
	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);

	cfg = readl(dev->regs + FLITE_REG_CISRCSIZE);
	cfg &= ~(FLITE_REG_CISRCSIZE_ORDER422_MASK \|
	FLITE_REG_CISRCSIZE_SIZE_CAM_MASK);
	cfg \|= (f->f_width << 16) \| f->f_height;
	cfg \|= src_pixfmt_map[i][1];
	writel(cfg, dev->regs + FLITE_REG_CISRCSIZE);
	}

	/* Set the camera host input window offsets (cropping) */
	void flite_hw_set_window_offset(struct fimc_lite dev, struct flite_frame f)
	{
	u32 hoff2, voff2;
	u32 cfg;

	cfg = readl(dev->regs + FLITE_REG_CIWDOFST);
	cfg &= ~FLITE_REG_CIWDOFST_OFST_MASK;
	cfg \|= (f->rect.left << 16) \| f->rect.top;
	cfg \|= FLITE_REG_CIWDOFST_WINOFSEN;
	writel(cfg, dev->regs + FLITE_REG_CIWDOFST);

	hoff2 = f->f_width - f->rect.width - f->rect.left;
	voff2 = f->f_height - f->rect.height - f->rect.top;

	cfg = (hoff2 << 16) \| voff2;
	writel(cfg, dev->regs + FLITE_REG_CIWDOFST2);
	}

	/* Select camera port (A, B) */
	static void flite_hw_set_camera_port(struct fimc_lite *dev, int id)
	{
	u32 cfg = readl(dev->regs + FLITE_REG_CIGENERAL);
	if (id == 0)
	cfg &= ~FLITE_REG_CIGENERAL_CAM_B;
	else
	cfg \|= FLITE_REG_CIGENERAL_CAM_B;
	writel(cfg, dev->regs + FLITE_REG_CIGENERAL);
	}

	/* Select serial or parallel bus, camera port (A,B) and set signals polarity */
	void flite_hw_set_camera_bus(struct fimc_lite *dev,
	struct fimc_source_info *si)
	{
	u32 cfg = readl(dev->regs + FLITE_REG_CIGCTRL);
	unsigned int flags = si->flags;

	if (si->sensor_bus_type != FIMC_BUS_TYPE_MIPI_CSI2) {
	cfg &= ~(FLITE_REG_CIGCTRL_SELCAM_MIPI \|
	FLITE_REG_CIGCTRL_INVPOLPCLK \|
	FLITE_REG_CIGCTRL_INVPOLVSYNC \|
	FLITE_REG_CIGCTRL_INVPOLHREF);

	if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
	cfg \|= FLITE_REG_CIGCTRL_INVPOLPCLK;

	if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
	cfg \|= FLITE_REG_CIGCTRL_INVPOLVSYNC;

	if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
	cfg \|= FLITE_REG_CIGCTRL_INVPOLHREF;
	} else {
	cfg \|= FLITE_REG_CIGCTRL_SELCAM_MIPI;
	}

	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);

	flite_hw_set_camera_port(dev, si->mux_id);
	}

	static void flite_hw_set_pack12(struct fimc_lite *dev, int on)
	{
	u32 cfg = readl(dev->regs + FLITE_REG_CIODMAFMT);

	cfg &= ~FLITE_REG_CIODMAFMT_PACK12;

	if (on)
	cfg \|= FLITE_REG_CIODMAFMT_PACK12;

	writel(cfg, dev->regs + FLITE_REG_CIODMAFMT);
	}

	static void flite_hw_set_out_order(struct fimc_lite dev, struct flite_frame f)
	{
	static const u32 pixcode[4][2] = {
	{ MEDIA_BUS_FMT_YUYV8_2X8, FLITE_REG_CIODMAFMT_YCBYCR },
	{ MEDIA_BUS_FMT_YVYU8_2X8, FLITE_REG_CIODMAFMT_YCRYCB },
	{ MEDIA_BUS_FMT_UYVY8_2X8, FLITE_REG_CIODMAFMT_CBYCRY },
	{ MEDIA_BUS_FMT_VYUY8_2X8, FLITE_REG_CIODMAFMT_CRYCBY },
	};
	u32 cfg = readl(dev->regs + FLITE_REG_CIODMAFMT);
	int i = ARRAY_SIZE(pixcode);

	while (--i)
	if (pixcode[i][0] == f->fmt->mbus_code)
	break;
	cfg &= ~FLITE_REG_CIODMAFMT_YCBCR_ORDER_MASK;
	writel(cfg \| pixcode[i][1], dev->regs + FLITE_REG_CIODMAFMT);
	}

	void flite_hw_set_dma_window(struct fimc_lite dev, struct flite_frame f)
	{
	u32 cfg;

	/* Maximum output pixel size */
	cfg = readl(dev->regs + FLITE_REG_CIOCAN);
	cfg &= ~FLITE_REG_CIOCAN_MASK;
	cfg \|= (f->f_height << 16) \| f->f_width;
	writel(cfg, dev->regs + FLITE_REG_CIOCAN);

	/* DMA offsets */
	cfg = readl(dev->regs + FLITE_REG_CIOOFF);
	cfg &= ~FLITE_REG_CIOOFF_MASK;
	cfg \|= (f->rect.top << 16) \| f->rect.left;
	writel(cfg, dev->regs + FLITE_REG_CIOOFF);
	}

	void flite_hw_set_dma_buffer(struct fimc_lite dev, struct flite_buffer buf)
	{
	unsigned int index;
	u32 cfg;

	if (dev->dd->max_dma_bufs == 1)
	index = 0;
	else
	index = buf->index;

	if (index == 0)
	writel(buf->paddr, dev->regs + FLITE_REG_CIOSA);
	else
	writel(buf->paddr, dev->regs + FLITE_REG_CIOSAN(index - 1));

	cfg = readl(dev->regs + FLITE_REG_CIFCNTSEQ);
	cfg \|= BIT(index);
	writel(cfg, dev->regs + FLITE_REG_CIFCNTSEQ);
	}

	void flite_hw_mask_dma_buffer(struct fimc_lite *dev, u32 index)
	{
	u32 cfg;

	if (dev->dd->max_dma_bufs == 1)
	index = 0;

	cfg = readl(dev->regs + FLITE_REG_CIFCNTSEQ);
	cfg &= ~BIT(index);
	writel(cfg, dev->regs + FLITE_REG_CIFCNTSEQ);
	}

	/* Enable/disable output DMA, set output pixel size and offsets (composition) */
	void flite_hw_set_output_dma(struct fimc_lite dev, struct flite_frame f,
	bool enable)
	{
	u32 cfg = readl(dev->regs + FLITE_REG_CIGCTRL);

	if (!enable) {
	cfg \|= FLITE_REG_CIGCTRL_ODMA_DISABLE;
	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);
	return;
	}

	cfg &= ~FLITE_REG_CIGCTRL_ODMA_DISABLE;
	writel(cfg, dev->regs + FLITE_REG_CIGCTRL);

	flite_hw_set_out_order(dev, f);
	flite_hw_set_dma_window(dev, f);
	flite_hw_set_pack12(dev, 0);
	}

	void flite_hw_dump_regs(struct fimc_lite dev, const char label)
	{
	struct {
	u32 offset;
	const char * const name;
	} registers[] = {
	{ 0x00, "CISRCSIZE" },
	{ 0x04, "CIGCTRL" },
	{ 0x08, "CIIMGCPT" },
	{ 0x0c, "CICPTSEQ" },
	{ 0x10, "CIWDOFST" },
	{ 0x14, "CIWDOFST2" },
	{ 0x18, "CIODMAFMT" },
	{ 0x20, "CIOCAN" },
	{ 0x24, "CIOOFF" },
	{ 0x30, "CIOSA" },
	{ 0x40, "CISTATUS" },
	{ 0x44, "CISTATUS2" },
	{ 0xf0, "CITHOLD" },
	{ 0xfc, "CIGENERAL" },
	};
	u32 i;

	v4l2_info(&dev->subdev, "--- %s ---\n", label);

	for (i = 0; i < ARRAY_SIZE(registers); i++) {
	u32 cfg = readl(dev->regs + registers[i].offset);
	v4l2_info(&dev->subdev, "%9s: 0x%08x\n",
	registers[i].name, cfg);
	}
	}