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-rw-r--r--drivers/media/i2c/ov5640.c4012
1 files changed, 4012 insertions, 0 deletions
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
new file mode 100644
index 0000000000..40532f7bca
--- /dev/null
+++ b/drivers/media/i2c/ov5640.c
@@ -0,0 +1,4012 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2014-2017 Mentor Graphics Inc.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/ctype.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <media/v4l2-async.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-subdev.h>
+
+/* min/typical/max system clock (xclk) frequencies */
+#define OV5640_XCLK_MIN 6000000
+#define OV5640_XCLK_MAX 54000000
+
+#define OV5640_NATIVE_WIDTH 2624
+#define OV5640_NATIVE_HEIGHT 1964
+#define OV5640_PIXEL_ARRAY_TOP 14
+#define OV5640_PIXEL_ARRAY_LEFT 16
+#define OV5640_PIXEL_ARRAY_WIDTH 2592
+#define OV5640_PIXEL_ARRAY_HEIGHT 1944
+
+/* FIXME: not documented. */
+#define OV5640_MIN_VBLANK 24
+#define OV5640_MAX_VTS 3375
+
+#define OV5640_DEFAULT_SLAVE_ID 0x3c
+
+#define OV5640_LINK_RATE_MAX 490000000U
+
+#define OV5640_REG_SYS_RESET02 0x3002
+#define OV5640_REG_SYS_CLOCK_ENABLE02 0x3006
+#define OV5640_REG_SYS_CTRL0 0x3008
+#define OV5640_REG_SYS_CTRL0_SW_PWDN 0x42
+#define OV5640_REG_SYS_CTRL0_SW_PWUP 0x02
+#define OV5640_REG_SYS_CTRL0_SW_RST 0x82
+#define OV5640_REG_CHIP_ID 0x300a
+#define OV5640_REG_IO_MIPI_CTRL00 0x300e
+#define OV5640_REG_PAD_OUTPUT_ENABLE01 0x3017
+#define OV5640_REG_PAD_OUTPUT_ENABLE02 0x3018
+#define OV5640_REG_PAD_OUTPUT00 0x3019
+#define OV5640_REG_SYSTEM_CONTROL1 0x302e
+#define OV5640_REG_SC_PLL_CTRL0 0x3034
+#define OV5640_REG_SC_PLL_CTRL1 0x3035
+#define OV5640_REG_SC_PLL_CTRL2 0x3036
+#define OV5640_REG_SC_PLL_CTRL3 0x3037
+#define OV5640_REG_SLAVE_ID 0x3100
+#define OV5640_REG_SCCB_SYS_CTRL1 0x3103
+#define OV5640_REG_SYS_ROOT_DIVIDER 0x3108
+#define OV5640_REG_AWB_R_GAIN 0x3400
+#define OV5640_REG_AWB_G_GAIN 0x3402
+#define OV5640_REG_AWB_B_GAIN 0x3404
+#define OV5640_REG_AWB_MANUAL_CTRL 0x3406
+#define OV5640_REG_AEC_PK_EXPOSURE_HI 0x3500
+#define OV5640_REG_AEC_PK_EXPOSURE_MED 0x3501
+#define OV5640_REG_AEC_PK_EXPOSURE_LO 0x3502
+#define OV5640_REG_AEC_PK_MANUAL 0x3503
+#define OV5640_REG_AEC_PK_REAL_GAIN 0x350a
+#define OV5640_REG_AEC_PK_VTS 0x350c
+#define OV5640_REG_TIMING_HS 0x3800
+#define OV5640_REG_TIMING_VS 0x3802
+#define OV5640_REG_TIMING_HW 0x3804
+#define OV5640_REG_TIMING_VH 0x3806
+#define OV5640_REG_TIMING_DVPHO 0x3808
+#define OV5640_REG_TIMING_DVPVO 0x380a
+#define OV5640_REG_TIMING_HTS 0x380c
+#define OV5640_REG_TIMING_VTS 0x380e
+#define OV5640_REG_TIMING_HOFFS 0x3810
+#define OV5640_REG_TIMING_VOFFS 0x3812
+#define OV5640_REG_TIMING_TC_REG20 0x3820
+#define OV5640_REG_TIMING_TC_REG21 0x3821
+#define OV5640_REG_AEC_CTRL00 0x3a00
+#define OV5640_REG_AEC_B50_STEP 0x3a08
+#define OV5640_REG_AEC_B60_STEP 0x3a0a
+#define OV5640_REG_AEC_CTRL0D 0x3a0d
+#define OV5640_REG_AEC_CTRL0E 0x3a0e
+#define OV5640_REG_AEC_CTRL0F 0x3a0f
+#define OV5640_REG_AEC_CTRL10 0x3a10
+#define OV5640_REG_AEC_CTRL11 0x3a11
+#define OV5640_REG_AEC_CTRL1B 0x3a1b
+#define OV5640_REG_AEC_CTRL1E 0x3a1e
+#define OV5640_REG_AEC_CTRL1F 0x3a1f
+#define OV5640_REG_HZ5060_CTRL00 0x3c00
+#define OV5640_REG_HZ5060_CTRL01 0x3c01
+#define OV5640_REG_SIGMADELTA_CTRL0C 0x3c0c
+#define OV5640_REG_FRAME_CTRL01 0x4202
+#define OV5640_REG_FORMAT_CONTROL00 0x4300
+#define OV5640_REG_VFIFO_HSIZE 0x4602
+#define OV5640_REG_VFIFO_VSIZE 0x4604
+#define OV5640_REG_JPG_MODE_SELECT 0x4713
+#define OV5640_REG_CCIR656_CTRL00 0x4730
+#define OV5640_REG_POLARITY_CTRL00 0x4740
+#define OV5640_REG_MIPI_CTRL00 0x4800
+#define OV5640_REG_DEBUG_MODE 0x4814
+#define OV5640_REG_PCLK_PERIOD 0x4837
+#define OV5640_REG_ISP_FORMAT_MUX_CTRL 0x501f
+#define OV5640_REG_PRE_ISP_TEST_SET1 0x503d
+#define OV5640_REG_SDE_CTRL0 0x5580
+#define OV5640_REG_SDE_CTRL1 0x5581
+#define OV5640_REG_SDE_CTRL3 0x5583
+#define OV5640_REG_SDE_CTRL4 0x5584
+#define OV5640_REG_SDE_CTRL5 0x5585
+#define OV5640_REG_AVG_READOUT 0x56a1
+
+enum ov5640_mode_id {
+ OV5640_MODE_QQVGA_160_120 = 0,
+ OV5640_MODE_QCIF_176_144,
+ OV5640_MODE_QVGA_320_240,
+ OV5640_MODE_VGA_640_480,
+ OV5640_MODE_NTSC_720_480,
+ OV5640_MODE_PAL_720_576,
+ OV5640_MODE_XGA_1024_768,
+ OV5640_MODE_720P_1280_720,
+ OV5640_MODE_1080P_1920_1080,
+ OV5640_MODE_QSXGA_2592_1944,
+ OV5640_NUM_MODES,
+};
+
+enum ov5640_frame_rate {
+ OV5640_15_FPS = 0,
+ OV5640_30_FPS,
+ OV5640_60_FPS,
+ OV5640_NUM_FRAMERATES,
+};
+
+enum ov5640_pixel_rate_id {
+ OV5640_PIXEL_RATE_168M,
+ OV5640_PIXEL_RATE_148M,
+ OV5640_PIXEL_RATE_124M,
+ OV5640_PIXEL_RATE_96M,
+ OV5640_PIXEL_RATE_48M,
+ OV5640_NUM_PIXEL_RATES,
+};
+
+/*
+ * The chip manual suggests 24/48/96/192 MHz pixel clocks.
+ *
+ * 192MHz exceeds the sysclk limits; use 168MHz as maximum pixel rate for
+ * full resolution mode @15 FPS.
+ */
+static const u32 ov5640_pixel_rates[] = {
+ [OV5640_PIXEL_RATE_168M] = 168000000,
+ [OV5640_PIXEL_RATE_148M] = 148000000,
+ [OV5640_PIXEL_RATE_124M] = 124000000,
+ [OV5640_PIXEL_RATE_96M] = 96000000,
+ [OV5640_PIXEL_RATE_48M] = 48000000,
+};
+
+/*
+ * MIPI CSI-2 link frequencies.
+ *
+ * Derived from the above defined pixel rate for bpp = (8, 16, 24) and
+ * data_lanes = (1, 2)
+ *
+ * link_freq = (pixel_rate * bpp) / (2 * data_lanes)
+ */
+static const s64 ov5640_csi2_link_freqs[] = {
+ 992000000, 888000000, 768000000, 744000000, 672000000, 672000000,
+ 592000000, 592000000, 576000000, 576000000, 496000000, 496000000,
+ 384000000, 384000000, 384000000, 336000000, 296000000, 288000000,
+ 248000000, 192000000, 192000000, 192000000, 96000000,
+};
+
+/* Link freq for default mode: UYVY 16 bpp, 2 data lanes. */
+#define OV5640_DEFAULT_LINK_FREQ 13
+
+enum ov5640_format_mux {
+ OV5640_FMT_MUX_YUV422 = 0,
+ OV5640_FMT_MUX_RGB,
+ OV5640_FMT_MUX_DITHER,
+ OV5640_FMT_MUX_RAW_DPC,
+ OV5640_FMT_MUX_SNR_RAW,
+ OV5640_FMT_MUX_RAW_CIP,
+};
+
+struct ov5640_pixfmt {
+ u32 code;
+ u32 colorspace;
+ u8 bpp;
+ u8 ctrl00;
+ enum ov5640_format_mux mux;
+};
+
+static const struct ov5640_pixfmt ov5640_dvp_formats[] = {
+ {
+ /* YUV422, YUYV */
+ .code = MEDIA_BUS_FMT_JPEG_1X8,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .bpp = 16,
+ .ctrl00 = 0x30,
+ .mux = OV5640_FMT_MUX_YUV422,
+ }, {
+ /* YUV422, UYVY */
+ .code = MEDIA_BUS_FMT_UYVY8_2X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 16,
+ .ctrl00 = 0x3f,
+ .mux = OV5640_FMT_MUX_YUV422,
+ }, {
+ /* YUV422, YUYV */
+ .code = MEDIA_BUS_FMT_YUYV8_2X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 16,
+ .ctrl00 = 0x30,
+ .mux = OV5640_FMT_MUX_YUV422,
+ }, {
+ /* RGB565 {g[2:0],b[4:0]},{r[4:0],g[5:3]} */
+ .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 16,
+ .ctrl00 = 0x6f,
+ .mux = OV5640_FMT_MUX_RGB,
+ }, {
+ /* RGB565 {r[4:0],g[5:3]},{g[2:0],b[4:0]} */
+ .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 16,
+ .ctrl00 = 0x61,
+ .mux = OV5640_FMT_MUX_RGB,
+ }, {
+ /* Raw, BGBG... / GRGR... */
+ .code = MEDIA_BUS_FMT_SBGGR8_1X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 8,
+ .ctrl00 = 0x00,
+ .mux = OV5640_FMT_MUX_RAW_DPC,
+ }, {
+ /* Raw bayer, GBGB... / RGRG... */
+ .code = MEDIA_BUS_FMT_SGBRG8_1X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 8,
+ .ctrl00 = 0x01,
+ .mux = OV5640_FMT_MUX_RAW_DPC,
+ }, {
+ /* Raw bayer, GRGR... / BGBG... */
+ .code = MEDIA_BUS_FMT_SGRBG8_1X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 8,
+ .ctrl00 = 0x02,
+ .mux = OV5640_FMT_MUX_RAW_DPC,
+ }, {
+ /* Raw bayer, RGRG... / GBGB... */
+ .code = MEDIA_BUS_FMT_SRGGB8_1X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 8,
+ .ctrl00 = 0x03,
+ .mux = OV5640_FMT_MUX_RAW_DPC,
+ },
+ { /* sentinel */ }
+};
+
+static const struct ov5640_pixfmt ov5640_csi2_formats[] = {
+ {
+ /* YUV422, YUYV */
+ .code = MEDIA_BUS_FMT_JPEG_1X8,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ .bpp = 16,
+ .ctrl00 = 0x30,
+ .mux = OV5640_FMT_MUX_YUV422,
+ }, {
+ /* YUV422, UYVY */
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 16,
+ .ctrl00 = 0x3f,
+ .mux = OV5640_FMT_MUX_YUV422,
+ }, {
+ /* YUV422, YUYV */
+ .code = MEDIA_BUS_FMT_YUYV8_1X16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 16,
+ .ctrl00 = 0x30,
+ .mux = OV5640_FMT_MUX_YUV422,
+ }, {
+ /* RGB565 {g[2:0],b[4:0]},{r[4:0],g[5:3]} */
+ .code = MEDIA_BUS_FMT_RGB565_1X16,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 16,
+ .ctrl00 = 0x6f,
+ .mux = OV5640_FMT_MUX_RGB,
+ }, {
+ /* BGR888: RGB */
+ .code = MEDIA_BUS_FMT_BGR888_1X24,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 24,
+ .ctrl00 = 0x23,
+ .mux = OV5640_FMT_MUX_RGB,
+ }, {
+ /* Raw, BGBG... / GRGR... */
+ .code = MEDIA_BUS_FMT_SBGGR8_1X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 8,
+ .ctrl00 = 0x00,
+ .mux = OV5640_FMT_MUX_RAW_DPC,
+ }, {
+ /* Raw bayer, GBGB... / RGRG... */
+ .code = MEDIA_BUS_FMT_SGBRG8_1X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 8,
+ .ctrl00 = 0x01,
+ .mux = OV5640_FMT_MUX_RAW_DPC,
+ }, {
+ /* Raw bayer, GRGR... / BGBG... */
+ .code = MEDIA_BUS_FMT_SGRBG8_1X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 8,
+ .ctrl00 = 0x02,
+ .mux = OV5640_FMT_MUX_RAW_DPC,
+ }, {
+ /* Raw bayer, RGRG... / GBGB... */
+ .code = MEDIA_BUS_FMT_SRGGB8_1X8,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .bpp = 8,
+ .ctrl00 = 0x03,
+ .mux = OV5640_FMT_MUX_RAW_DPC,
+ },
+ { /* sentinel */ }
+};
+
+/*
+ * FIXME: remove this when a subdev API becomes available
+ * to set the MIPI CSI-2 virtual channel.
+ */
+static unsigned int virtual_channel;
+module_param(virtual_channel, uint, 0444);
+MODULE_PARM_DESC(virtual_channel,
+ "MIPI CSI-2 virtual channel (0..3), default 0");
+
+static const int ov5640_framerates[] = {
+ [OV5640_15_FPS] = 15,
+ [OV5640_30_FPS] = 30,
+ [OV5640_60_FPS] = 60,
+};
+
+/* regulator supplies */
+static const char * const ov5640_supply_name[] = {
+ "DOVDD", /* Digital I/O (1.8V) supply */
+ "AVDD", /* Analog (2.8V) supply */
+ "DVDD", /* Digital Core (1.5V) supply */
+};
+
+#define OV5640_NUM_SUPPLIES ARRAY_SIZE(ov5640_supply_name)
+
+/*
+ * Image size under 1280 * 960 are SUBSAMPLING
+ * Image size upper 1280 * 960 are SCALING
+ */
+enum ov5640_downsize_mode {
+ SUBSAMPLING,
+ SCALING,
+};
+
+struct reg_value {
+ u16 reg_addr;
+ u8 val;
+ u8 mask;
+ u32 delay_ms;
+};
+
+struct ov5640_timings {
+ /* Analog crop rectangle. */
+ struct v4l2_rect analog_crop;
+ /* Visibile crop: from analog crop top-left corner. */
+ struct v4l2_rect crop;
+ /* Total pixels per line: width + fixed hblank. */
+ u32 htot;
+ /* Default vertical blanking: frame height = height + vblank. */
+ u32 vblank_def;
+};
+
+struct ov5640_mode_info {
+ enum ov5640_mode_id id;
+ enum ov5640_downsize_mode dn_mode;
+ enum ov5640_pixel_rate_id pixel_rate;
+
+ unsigned int width;
+ unsigned int height;
+
+ struct ov5640_timings dvp_timings;
+ struct ov5640_timings csi2_timings;
+
+ const struct reg_value *reg_data;
+ u32 reg_data_size;
+
+ /* Used by s_frame_interval only. */
+ u32 max_fps;
+ u32 def_fps;
+};
+
+struct ov5640_ctrls {
+ struct v4l2_ctrl_handler handler;
+ struct v4l2_ctrl *pixel_rate;
+ struct v4l2_ctrl *link_freq;
+ struct v4l2_ctrl *hblank;
+ struct v4l2_ctrl *vblank;
+ struct {
+ struct v4l2_ctrl *auto_exp;
+ struct v4l2_ctrl *exposure;
+ };
+ struct {
+ struct v4l2_ctrl *auto_wb;
+ struct v4l2_ctrl *blue_balance;
+ struct v4l2_ctrl *red_balance;
+ };
+ struct {
+ struct v4l2_ctrl *auto_gain;
+ struct v4l2_ctrl *gain;
+ };
+ struct v4l2_ctrl *brightness;
+ struct v4l2_ctrl *light_freq;
+ struct v4l2_ctrl *saturation;
+ struct v4l2_ctrl *contrast;
+ struct v4l2_ctrl *hue;
+ struct v4l2_ctrl *test_pattern;
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *vflip;
+};
+
+struct ov5640_dev {
+ struct i2c_client *i2c_client;
+ struct v4l2_subdev sd;
+ struct media_pad pad;
+ struct v4l2_fwnode_endpoint ep; /* the parsed DT endpoint info */
+ struct clk *xclk; /* system clock to OV5640 */
+ u32 xclk_freq;
+
+ struct regulator_bulk_data supplies[OV5640_NUM_SUPPLIES];
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *pwdn_gpio;
+ bool upside_down;
+
+ /* lock to protect all members below */
+ struct mutex lock;
+
+ struct v4l2_mbus_framefmt fmt;
+ bool pending_fmt_change;
+
+ const struct ov5640_mode_info *current_mode;
+ const struct ov5640_mode_info *last_mode;
+ enum ov5640_frame_rate current_fr;
+ struct v4l2_fract frame_interval;
+ s64 current_link_freq;
+
+ struct ov5640_ctrls ctrls;
+
+ u32 prev_sysclk, prev_hts;
+ u32 ae_low, ae_high, ae_target;
+
+ bool pending_mode_change;
+ bool streaming;
+};
+
+static inline struct ov5640_dev *to_ov5640_dev(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct ov5640_dev, sd);
+}
+
+static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct ov5640_dev,
+ ctrls.handler)->sd;
+}
+
+static inline bool ov5640_is_csi2(const struct ov5640_dev *sensor)
+{
+ return sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY;
+}
+
+static inline const struct ov5640_pixfmt *
+ov5640_formats(struct ov5640_dev *sensor)
+{
+ return ov5640_is_csi2(sensor) ? ov5640_csi2_formats
+ : ov5640_dvp_formats;
+}
+
+static const struct ov5640_pixfmt *
+ov5640_code_to_pixfmt(struct ov5640_dev *sensor, u32 code)
+{
+ const struct ov5640_pixfmt *formats = ov5640_formats(sensor);
+ unsigned int i;
+
+ for (i = 0; formats[i].code; ++i) {
+ if (formats[i].code == code)
+ return &formats[i];
+ }
+
+ return &formats[0];
+}
+
+static u32 ov5640_code_to_bpp(struct ov5640_dev *sensor, u32 code)
+{
+ const struct ov5640_pixfmt *format = ov5640_code_to_pixfmt(sensor,
+ code);
+
+ return format->bpp;
+}
+
+/*
+ * FIXME: all of these register tables are likely filled with
+ * entries that set the register to their power-on default values,
+ * and which are otherwise not touched by this driver. Those entries
+ * should be identified and removed to speed register load time
+ * over i2c.
+ */
+/* YUV422 UYVY VGA@30fps */
+
+static const struct v4l2_mbus_framefmt ov5640_csi2_default_fmt = {
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .width = 640,
+ .height = 480,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(V4L2_COLORSPACE_SRGB),
+ .quantization = V4L2_QUANTIZATION_FULL_RANGE,
+ .xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(V4L2_COLORSPACE_SRGB),
+ .field = V4L2_FIELD_NONE,
+};
+
+static const struct v4l2_mbus_framefmt ov5640_dvp_default_fmt = {
+ .code = MEDIA_BUS_FMT_UYVY8_2X8,
+ .width = 640,
+ .height = 480,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(V4L2_COLORSPACE_SRGB),
+ .quantization = V4L2_QUANTIZATION_FULL_RANGE,
+ .xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(V4L2_COLORSPACE_SRGB),
+ .field = V4L2_FIELD_NONE,
+};
+
+static const struct reg_value ov5640_init_setting[] = {
+ {0x3103, 0x11, 0, 0},
+ {0x3103, 0x03, 0, 0}, {0x3630, 0x36, 0, 0},
+ {0x3631, 0x0e, 0, 0}, {0x3632, 0xe2, 0, 0}, {0x3633, 0x12, 0, 0},
+ {0x3621, 0xe0, 0, 0}, {0x3704, 0xa0, 0, 0}, {0x3703, 0x5a, 0, 0},
+ {0x3715, 0x78, 0, 0}, {0x3717, 0x01, 0, 0}, {0x370b, 0x60, 0, 0},
+ {0x3705, 0x1a, 0, 0}, {0x3905, 0x02, 0, 0}, {0x3906, 0x10, 0, 0},
+ {0x3901, 0x0a, 0, 0}, {0x3731, 0x12, 0, 0}, {0x3600, 0x08, 0, 0},
+ {0x3601, 0x33, 0, 0}, {0x302d, 0x60, 0, 0}, {0x3620, 0x52, 0, 0},
+ {0x371b, 0x20, 0, 0}, {0x471c, 0x50, 0, 0}, {0x3a13, 0x43, 0, 0},
+ {0x3a18, 0x00, 0, 0}, {0x3a19, 0xf8, 0, 0}, {0x3635, 0x13, 0, 0},
+ {0x3636, 0x03, 0, 0}, {0x3634, 0x40, 0, 0}, {0x3622, 0x01, 0, 0},
+ {0x3c01, 0xa4, 0, 0}, {0x3c04, 0x28, 0, 0}, {0x3c05, 0x98, 0, 0},
+ {0x3c06, 0x00, 0, 0}, {0x3c07, 0x08, 0, 0}, {0x3c08, 0x00, 0, 0},
+ {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
+ {0x3820, 0x41, 0, 0}, {0x3821, 0x07, 0, 0}, {0x3814, 0x31, 0, 0},
+ {0x3815, 0x31, 0, 0},
+ {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
+ {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
+ {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
+ {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
+ {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
+ {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x3000, 0x00, 0, 0},
+ {0x3002, 0x1c, 0, 0}, {0x3004, 0xff, 0, 0}, {0x3006, 0xc3, 0, 0},
+ {0x302e, 0x08, 0, 0}, {0x4300, 0x3f, 0, 0},
+ {0x501f, 0x00, 0, 0}, {0x440e, 0x00, 0, 0}, {0x4837, 0x0a, 0, 0},
+ {0x5000, 0xa7, 0, 0}, {0x5001, 0xa3, 0, 0}, {0x5180, 0xff, 0, 0},
+ {0x5181, 0xf2, 0, 0}, {0x5182, 0x00, 0, 0}, {0x5183, 0x14, 0, 0},
+ {0x5184, 0x25, 0, 0}, {0x5185, 0x24, 0, 0}, {0x5186, 0x09, 0, 0},
+ {0x5187, 0x09, 0, 0}, {0x5188, 0x09, 0, 0}, {0x5189, 0x88, 0, 0},
+ {0x518a, 0x54, 0, 0}, {0x518b, 0xee, 0, 0}, {0x518c, 0xb2, 0, 0},
+ {0x518d, 0x50, 0, 0}, {0x518e, 0x34, 0, 0}, {0x518f, 0x6b, 0, 0},
+ {0x5190, 0x46, 0, 0}, {0x5191, 0xf8, 0, 0}, {0x5192, 0x04, 0, 0},
+ {0x5193, 0x70, 0, 0}, {0x5194, 0xf0, 0, 0}, {0x5195, 0xf0, 0, 0},
+ {0x5196, 0x03, 0, 0}, {0x5197, 0x01, 0, 0}, {0x5198, 0x04, 0, 0},
+ {0x5199, 0x6c, 0, 0}, {0x519a, 0x04, 0, 0}, {0x519b, 0x00, 0, 0},
+ {0x519c, 0x09, 0, 0}, {0x519d, 0x2b, 0, 0}, {0x519e, 0x38, 0, 0},
+ {0x5381, 0x1e, 0, 0}, {0x5382, 0x5b, 0, 0}, {0x5383, 0x08, 0, 0},
+ {0x5384, 0x0a, 0, 0}, {0x5385, 0x7e, 0, 0}, {0x5386, 0x88, 0, 0},
+ {0x5387, 0x7c, 0, 0}, {0x5388, 0x6c, 0, 0}, {0x5389, 0x10, 0, 0},
+ {0x538a, 0x01, 0, 0}, {0x538b, 0x98, 0, 0}, {0x5300, 0x08, 0, 0},
+ {0x5301, 0x30, 0, 0}, {0x5302, 0x10, 0, 0}, {0x5303, 0x00, 0, 0},
+ {0x5304, 0x08, 0, 0}, {0x5305, 0x30, 0, 0}, {0x5306, 0x08, 0, 0},
+ {0x5307, 0x16, 0, 0}, {0x5309, 0x08, 0, 0}, {0x530a, 0x30, 0, 0},
+ {0x530b, 0x04, 0, 0}, {0x530c, 0x06, 0, 0}, {0x5480, 0x01, 0, 0},
+ {0x5481, 0x08, 0, 0}, {0x5482, 0x14, 0, 0}, {0x5483, 0x28, 0, 0},
+ {0x5484, 0x51, 0, 0}, {0x5485, 0x65, 0, 0}, {0x5486, 0x71, 0, 0},
+ {0x5487, 0x7d, 0, 0}, {0x5488, 0x87, 0, 0}, {0x5489, 0x91, 0, 0},
+ {0x548a, 0x9a, 0, 0}, {0x548b, 0xaa, 0, 0}, {0x548c, 0xb8, 0, 0},
+ {0x548d, 0xcd, 0, 0}, {0x548e, 0xdd, 0, 0}, {0x548f, 0xea, 0, 0},
+ {0x5490, 0x1d, 0, 0}, {0x5580, 0x02, 0, 0}, {0x5583, 0x40, 0, 0},
+ {0x5584, 0x10, 0, 0}, {0x5589, 0x10, 0, 0}, {0x558a, 0x00, 0, 0},
+ {0x558b, 0xf8, 0, 0}, {0x5800, 0x23, 0, 0}, {0x5801, 0x14, 0, 0},
+ {0x5802, 0x0f, 0, 0}, {0x5803, 0x0f, 0, 0}, {0x5804, 0x12, 0, 0},
+ {0x5805, 0x26, 0, 0}, {0x5806, 0x0c, 0, 0}, {0x5807, 0x08, 0, 0},
+ {0x5808, 0x05, 0, 0}, {0x5809, 0x05, 0, 0}, {0x580a, 0x08, 0, 0},
+ {0x580b, 0x0d, 0, 0}, {0x580c, 0x08, 0, 0}, {0x580d, 0x03, 0, 0},
+ {0x580e, 0x00, 0, 0}, {0x580f, 0x00, 0, 0}, {0x5810, 0x03, 0, 0},
+ {0x5811, 0x09, 0, 0}, {0x5812, 0x07, 0, 0}, {0x5813, 0x03, 0, 0},
+ {0x5814, 0x00, 0, 0}, {0x5815, 0x01, 0, 0}, {0x5816, 0x03, 0, 0},
+ {0x5817, 0x08, 0, 0}, {0x5818, 0x0d, 0, 0}, {0x5819, 0x08, 0, 0},
+ {0x581a, 0x05, 0, 0}, {0x581b, 0x06, 0, 0}, {0x581c, 0x08, 0, 0},
+ {0x581d, 0x0e, 0, 0}, {0x581e, 0x29, 0, 0}, {0x581f, 0x17, 0, 0},
+ {0x5820, 0x11, 0, 0}, {0x5821, 0x11, 0, 0}, {0x5822, 0x15, 0, 0},
+ {0x5823, 0x28, 0, 0}, {0x5824, 0x46, 0, 0}, {0x5825, 0x26, 0, 0},
+ {0x5826, 0x08, 0, 0}, {0x5827, 0x26, 0, 0}, {0x5828, 0x64, 0, 0},
+ {0x5829, 0x26, 0, 0}, {0x582a, 0x24, 0, 0}, {0x582b, 0x22, 0, 0},
+ {0x582c, 0x24, 0, 0}, {0x582d, 0x24, 0, 0}, {0x582e, 0x06, 0, 0},
+ {0x582f, 0x22, 0, 0}, {0x5830, 0x40, 0, 0}, {0x5831, 0x42, 0, 0},
+ {0x5832, 0x24, 0, 0}, {0x5833, 0x26, 0, 0}, {0x5834, 0x24, 0, 0},
+ {0x5835, 0x22, 0, 0}, {0x5836, 0x22, 0, 0}, {0x5837, 0x26, 0, 0},
+ {0x5838, 0x44, 0, 0}, {0x5839, 0x24, 0, 0}, {0x583a, 0x26, 0, 0},
+ {0x583b, 0x28, 0, 0}, {0x583c, 0x42, 0, 0}, {0x583d, 0xce, 0, 0},
+ {0x5025, 0x00, 0, 0}, {0x3a0f, 0x30, 0, 0}, {0x3a10, 0x28, 0, 0},
+ {0x3a1b, 0x30, 0, 0}, {0x3a1e, 0x26, 0, 0}, {0x3a11, 0x60, 0, 0},
+ {0x3a1f, 0x14, 0, 0}, {0x3008, 0x02, 0, 0}, {0x3c00, 0x04, 0, 300},
+};
+
+static const struct reg_value ov5640_setting_low_res[] = {
+ {0x3c07, 0x08, 0, 0},
+ {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
+ {0x3814, 0x31, 0, 0},
+ {0x3815, 0x31, 0, 0},
+ {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
+ {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
+ {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
+ {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
+ {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
+ {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
+ {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
+ {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
+};
+
+static const struct reg_value ov5640_setting_720P_1280_720[] = {
+ {0x3c07, 0x07, 0, 0},
+ {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
+ {0x3814, 0x31, 0, 0},
+ {0x3815, 0x31, 0, 0},
+ {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
+ {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x02, 0, 0},
+ {0x3a03, 0xe4, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0xbc, 0, 0},
+ {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x72, 0, 0}, {0x3a0e, 0x01, 0, 0},
+ {0x3a0d, 0x02, 0, 0}, {0x3a14, 0x02, 0, 0}, {0x3a15, 0xe4, 0, 0},
+ {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
+ {0x4407, 0x04, 0, 0}, {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0},
+ {0x3824, 0x04, 0, 0}, {0x5001, 0x83, 0, 0},
+};
+
+static const struct reg_value ov5640_setting_1080P_1920_1080[] = {
+ {0x3c07, 0x08, 0, 0},
+ {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
+ {0x3814, 0x11, 0, 0},
+ {0x3815, 0x11, 0, 0},
+ {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
+ {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
+ {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
+ {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
+ {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
+ {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0},
+ {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
+ {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 0},
+ {0x3c07, 0x07, 0, 0}, {0x3c08, 0x00, 0, 0},
+ {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
+ {0x3612, 0x2b, 0, 0}, {0x3708, 0x64, 0, 0},
+ {0x3a02, 0x04, 0, 0}, {0x3a03, 0x60, 0, 0}, {0x3a08, 0x01, 0, 0},
+ {0x3a09, 0x50, 0, 0}, {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x18, 0, 0},
+ {0x3a0e, 0x03, 0, 0}, {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x04, 0, 0},
+ {0x3a15, 0x60, 0, 0}, {0x4407, 0x04, 0, 0},
+ {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, {0x3824, 0x04, 0, 0},
+ {0x4005, 0x1a, 0, 0},
+};
+
+static const struct reg_value ov5640_setting_QSXGA_2592_1944[] = {
+ {0x3c07, 0x08, 0, 0},
+ {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
+ {0x3814, 0x11, 0, 0},
+ {0x3815, 0x11, 0, 0},
+ {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
+ {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
+ {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
+ {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
+ {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
+ {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0},
+ {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
+ {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 70},
+};
+
+static const struct ov5640_mode_info ov5640_mode_data[OV5640_NUM_MODES] = {
+ {
+ /* 160x120 */
+ .id = OV5640_MODE_QQVGA_160_120,
+ .dn_mode = SUBSAMPLING,
+ .pixel_rate = OV5640_PIXEL_RATE_48M,
+ .width = 160,
+ .height = 120,
+ .dvp_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 4,
+ .width = 2624,
+ .height = 1944,
+ },
+ .crop = {
+ .left = 16,
+ .top = 6,
+ .width = 160,
+ .height = 120,
+ },
+ .htot = 1896,
+ .vblank_def = 864,
+ },
+ .csi2_timings = {
+ /* Feed the full valid pixel array to the ISP. */
+ .analog_crop = {
+ .left = OV5640_PIXEL_ARRAY_LEFT,
+ .top = OV5640_PIXEL_ARRAY_TOP,
+ .width = OV5640_PIXEL_ARRAY_WIDTH,
+ .height = OV5640_PIXEL_ARRAY_HEIGHT,
+ },
+ /* Maintain a minimum processing margin. */
+ .crop = {
+ .left = 2,
+ .top = 4,
+ .width = 160,
+ .height = 120,
+ },
+ .htot = 1600,
+ .vblank_def = 878,
+ },
+ .reg_data = ov5640_setting_low_res,
+ .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
+ .max_fps = OV5640_30_FPS,
+ .def_fps = OV5640_30_FPS
+ }, {
+ /* 176x144 */
+ .id = OV5640_MODE_QCIF_176_144,
+ .dn_mode = SUBSAMPLING,
+ .pixel_rate = OV5640_PIXEL_RATE_48M,
+ .width = 176,
+ .height = 144,
+ .dvp_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 4,
+ .width = 2624,
+ .height = 1944,
+ },
+ .crop = {
+ .left = 16,
+ .top = 6,
+ .width = 176,
+ .height = 144,
+ },
+ .htot = 1896,
+ .vblank_def = 840,
+ },
+ .csi2_timings = {
+ /* Feed the full valid pixel array to the ISP. */
+ .analog_crop = {
+ .left = OV5640_PIXEL_ARRAY_LEFT,
+ .top = OV5640_PIXEL_ARRAY_TOP,
+ .width = OV5640_PIXEL_ARRAY_WIDTH,
+ .height = OV5640_PIXEL_ARRAY_HEIGHT,
+ },
+ /* Maintain a minimum processing margin. */
+ .crop = {
+ .left = 2,
+ .top = 4,
+ .width = 176,
+ .height = 144,
+ },
+ .htot = 1600,
+ .vblank_def = 854,
+ },
+ .reg_data = ov5640_setting_low_res,
+ .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
+ .max_fps = OV5640_30_FPS,
+ .def_fps = OV5640_30_FPS
+ }, {
+ /* 320x240 */
+ .id = OV5640_MODE_QVGA_320_240,
+ .dn_mode = SUBSAMPLING,
+ .width = 320,
+ .height = 240,
+ .pixel_rate = OV5640_PIXEL_RATE_48M,
+ .dvp_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 4,
+ .width = 2624,
+ .height = 1944,
+ },
+ .crop = {
+ .left = 16,
+ .top = 6,
+ .width = 320,
+ .height = 240,
+ },
+ .htot = 1896,
+ .vblank_def = 744,
+ },
+ .csi2_timings = {
+ /* Feed the full valid pixel array to the ISP. */
+ .analog_crop = {
+ .left = OV5640_PIXEL_ARRAY_LEFT,
+ .top = OV5640_PIXEL_ARRAY_TOP,
+ .width = OV5640_PIXEL_ARRAY_WIDTH,
+ .height = OV5640_PIXEL_ARRAY_HEIGHT,
+ },
+ /* Maintain a minimum processing margin. */
+ .crop = {
+ .left = 2,
+ .top = 4,
+ .width = 320,
+ .height = 240,
+ },
+ .htot = 1600,
+ .vblank_def = 760,
+ },
+ .reg_data = ov5640_setting_low_res,
+ .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
+ .max_fps = OV5640_30_FPS,
+ .def_fps = OV5640_30_FPS
+ }, {
+ /* 640x480 */
+ .id = OV5640_MODE_VGA_640_480,
+ .dn_mode = SUBSAMPLING,
+ .pixel_rate = OV5640_PIXEL_RATE_48M,
+ .width = 640,
+ .height = 480,
+ .dvp_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 4,
+ .width = 2624,
+ .height = 1944,
+ },
+ .crop = {
+ .left = 16,
+ .top = 6,
+ .width = 640,
+ .height = 480,
+ },
+ .htot = 1896,
+ .vblank_def = 600,
+ },
+ .csi2_timings = {
+ /* Feed the full valid pixel array to the ISP. */
+ .analog_crop = {
+ .left = OV5640_PIXEL_ARRAY_LEFT,
+ .top = OV5640_PIXEL_ARRAY_TOP,
+ .width = OV5640_PIXEL_ARRAY_WIDTH,
+ .height = OV5640_PIXEL_ARRAY_HEIGHT,
+ },
+ /* Maintain a minimum processing margin. */
+ .crop = {
+ .left = 2,
+ .top = 4,
+ .width = 640,
+ .height = 480,
+ },
+ .htot = 1600,
+ .vblank_def = 520,
+ },
+ .reg_data = ov5640_setting_low_res,
+ .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
+ .max_fps = OV5640_60_FPS,
+ .def_fps = OV5640_30_FPS
+ }, {
+ /* 720x480 */
+ .id = OV5640_MODE_NTSC_720_480,
+ .dn_mode = SUBSAMPLING,
+ .width = 720,
+ .height = 480,
+ .pixel_rate = OV5640_PIXEL_RATE_96M,
+ .dvp_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 4,
+ .width = 2624,
+ .height = 1944,
+ },
+ .crop = {
+ .left = 56,
+ .top = 60,
+ .width = 720,
+ .height = 480,
+ },
+ .htot = 1896,
+ .vblank_def = 504,
+ },
+ .csi2_timings = {
+ /* Feed the full valid pixel array to the ISP. */
+ .analog_crop = {
+ .left = OV5640_PIXEL_ARRAY_LEFT,
+ .top = OV5640_PIXEL_ARRAY_TOP,
+ .width = OV5640_PIXEL_ARRAY_WIDTH,
+ .height = OV5640_PIXEL_ARRAY_HEIGHT,
+ },
+ .crop = {
+ .left = 56,
+ .top = 60,
+ .width = 720,
+ .height = 480,
+ },
+ .htot = 1896,
+ .vblank_def = 1206,
+ },
+ .reg_data = ov5640_setting_low_res,
+ .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
+ .max_fps = OV5640_30_FPS,
+ .def_fps = OV5640_30_FPS
+ }, {
+ /* 720x576 */
+ .id = OV5640_MODE_PAL_720_576,
+ .dn_mode = SUBSAMPLING,
+ .width = 720,
+ .height = 576,
+ .pixel_rate = OV5640_PIXEL_RATE_96M,
+ .dvp_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 4,
+ .width = 2624,
+ .height = 1944,
+ },
+ .crop = {
+ .left = 56,
+ .top = 6,
+ .width = 720,
+ .height = 576,
+ },
+ .htot = 1896,
+ .vblank_def = 408,
+ },
+ .csi2_timings = {
+ /* Feed the full valid pixel array to the ISP. */
+ .analog_crop = {
+ .left = OV5640_PIXEL_ARRAY_LEFT,
+ .top = OV5640_PIXEL_ARRAY_TOP,
+ .width = OV5640_PIXEL_ARRAY_WIDTH,
+ .height = OV5640_PIXEL_ARRAY_HEIGHT,
+ },
+ .crop = {
+ .left = 56,
+ .top = 6,
+ .width = 720,
+ .height = 576,
+ },
+ .htot = 1896,
+ .vblank_def = 1110,
+ },
+ .reg_data = ov5640_setting_low_res,
+ .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
+ .max_fps = OV5640_30_FPS,
+ .def_fps = OV5640_30_FPS
+ }, {
+ /* 1024x768 */
+ .id = OV5640_MODE_XGA_1024_768,
+ .dn_mode = SUBSAMPLING,
+ .pixel_rate = OV5640_PIXEL_RATE_96M,
+ .width = 1024,
+ .height = 768,
+ .dvp_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 4,
+ .width = 2624,
+ .height = 1944,
+ },
+ .crop = {
+ .left = 16,
+ .top = 6,
+ .width = 1024,
+ .height = 768,
+ },
+ .htot = 1896,
+ .vblank_def = 312,
+ },
+ .csi2_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 4,
+ .width = OV5640_NATIVE_WIDTH,
+ .height = OV5640_PIXEL_ARRAY_HEIGHT,
+ },
+ .crop = {
+ .left = 16,
+ .top = 6,
+ .width = 1024,
+ .height = 768,
+ },
+ .htot = 1896,
+ .vblank_def = 918,
+ },
+ .reg_data = ov5640_setting_low_res,
+ .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
+ .max_fps = OV5640_30_FPS,
+ .def_fps = OV5640_30_FPS
+ }, {
+ /* 1280x720 */
+ .id = OV5640_MODE_720P_1280_720,
+ .dn_mode = SUBSAMPLING,
+ .pixel_rate = OV5640_PIXEL_RATE_124M,
+ .width = 1280,
+ .height = 720,
+ .dvp_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 250,
+ .width = 2624,
+ .height = 1456,
+ },
+ .crop = {
+ .left = 16,
+ .top = 4,
+ .width = 1280,
+ .height = 720,
+ },
+ .htot = 1892,
+ .vblank_def = 20,
+ },
+ .csi2_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 250,
+ .width = 2624,
+ .height = 1456,
+ },
+ .crop = {
+ .left = 16,
+ .top = 4,
+ .width = 1280,
+ .height = 720,
+ },
+ .htot = 1600,
+ .vblank_def = 560,
+ },
+ .reg_data = ov5640_setting_720P_1280_720,
+ .reg_data_size = ARRAY_SIZE(ov5640_setting_720P_1280_720),
+ .max_fps = OV5640_30_FPS,
+ .def_fps = OV5640_30_FPS
+ }, {
+ /* 1920x1080 */
+ .id = OV5640_MODE_1080P_1920_1080,
+ .dn_mode = SCALING,
+ .pixel_rate = OV5640_PIXEL_RATE_148M,
+ .width = 1920,
+ .height = 1080,
+ .dvp_timings = {
+ .analog_crop = {
+ .left = 336,
+ .top = 434,
+ .width = 1952,
+ .height = 1088,
+ },
+ .crop = {
+ .left = 16,
+ .top = 4,
+ .width = 1920,
+ .height = 1080,
+ },
+ .htot = 2500,
+ .vblank_def = 40,
+ },
+ .csi2_timings = {
+ /* Crop the full valid pixel array in the center. */
+ .analog_crop = {
+ .left = 336,
+ .top = 434,
+ .width = 1952,
+ .height = 1088,
+ },
+ /* Maintain a larger processing margins. */
+ .crop = {
+ .left = 16,
+ .top = 4,
+ .width = 1920,
+ .height = 1080,
+ },
+ .htot = 2234,
+ .vblank_def = 24,
+ },
+ .reg_data = ov5640_setting_1080P_1920_1080,
+ .reg_data_size = ARRAY_SIZE(ov5640_setting_1080P_1920_1080),
+ .max_fps = OV5640_30_FPS,
+ .def_fps = OV5640_30_FPS
+ }, {
+ /* 2592x1944 */
+ .id = OV5640_MODE_QSXGA_2592_1944,
+ .dn_mode = SCALING,
+ .pixel_rate = OV5640_PIXEL_RATE_168M,
+ .width = OV5640_PIXEL_ARRAY_WIDTH,
+ .height = OV5640_PIXEL_ARRAY_HEIGHT,
+ .dvp_timings = {
+ .analog_crop = {
+ .left = 0,
+ .top = 0,
+ .width = 2624,
+ .height = 1952,
+ },
+ .crop = {
+ .left = 16,
+ .top = 4,
+ .width = 2592,
+ .height = 1944,
+ },
+ .htot = 2844,
+ .vblank_def = 24,
+ },
+ .csi2_timings = {
+ /* Give more processing margin to full resolution. */
+ .analog_crop = {
+ .left = 0,
+ .top = 0,
+ .width = OV5640_NATIVE_WIDTH,
+ .height = 1952,
+ },
+ .crop = {
+ .left = 16,
+ .top = 4,
+ .width = 2592,
+ .height = 1944,
+ },
+ .htot = 2844,
+ .vblank_def = 24,
+ },
+ .reg_data = ov5640_setting_QSXGA_2592_1944,
+ .reg_data_size = ARRAY_SIZE(ov5640_setting_QSXGA_2592_1944),
+ .max_fps = OV5640_15_FPS,
+ .def_fps = OV5640_15_FPS
+ },
+};
+
+static const struct ov5640_timings *
+ov5640_timings(const struct ov5640_dev *sensor,
+ const struct ov5640_mode_info *mode)
+{
+ if (ov5640_is_csi2(sensor))
+ return &mode->csi2_timings;
+
+ return &mode->dvp_timings;
+}
+
+static int ov5640_init_slave_id(struct ov5640_dev *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ struct i2c_msg msg;
+ u8 buf[3];
+ int ret;
+
+ if (client->addr == OV5640_DEFAULT_SLAVE_ID)
+ return 0;
+
+ buf[0] = OV5640_REG_SLAVE_ID >> 8;
+ buf[1] = OV5640_REG_SLAVE_ID & 0xff;
+ buf[2] = client->addr << 1;
+
+ msg.addr = OV5640_DEFAULT_SLAVE_ID;
+ msg.flags = 0;
+ msg.buf = buf;
+ msg.len = sizeof(buf);
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret < 0) {
+ dev_err(&client->dev, "%s: failed with %d\n", __func__, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ov5640_write_reg(struct ov5640_dev *sensor, u16 reg, u8 val)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ struct i2c_msg msg;
+ u8 buf[3];
+ int ret;
+
+ buf[0] = reg >> 8;
+ buf[1] = reg & 0xff;
+ buf[2] = val;
+
+ msg.addr = client->addr;
+ msg.flags = client->flags;
+ msg.buf = buf;
+ msg.len = sizeof(buf);
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret < 0) {
+ dev_err(&client->dev, "%s: error: reg=%x, val=%x\n",
+ __func__, reg, val);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int ov5640_read_reg(struct ov5640_dev *sensor, u16 reg, u8 *val)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ struct i2c_msg msg[2];
+ u8 buf[2];
+ int ret;
+
+ buf[0] = reg >> 8;
+ buf[1] = reg & 0xff;
+
+ msg[0].addr = client->addr;
+ msg[0].flags = client->flags;
+ msg[0].buf = buf;
+ msg[0].len = sizeof(buf);
+
+ msg[1].addr = client->addr;
+ msg[1].flags = client->flags | I2C_M_RD;
+ msg[1].buf = buf;
+ msg[1].len = 1;
+
+ ret = i2c_transfer(client->adapter, msg, 2);
+ if (ret < 0) {
+ dev_err(&client->dev, "%s: error: reg=%x\n",
+ __func__, reg);
+ return ret;
+ }
+
+ *val = buf[0];
+ return 0;
+}
+
+static int ov5640_read_reg16(struct ov5640_dev *sensor, u16 reg, u16 *val)
+{
+ u8 hi, lo;
+ int ret;
+
+ ret = ov5640_read_reg(sensor, reg, &hi);
+ if (ret)
+ return ret;
+ ret = ov5640_read_reg(sensor, reg + 1, &lo);
+ if (ret)
+ return ret;
+
+ *val = ((u16)hi << 8) | (u16)lo;
+ return 0;
+}
+
+static int ov5640_write_reg16(struct ov5640_dev *sensor, u16 reg, u16 val)
+{
+ int ret;
+
+ ret = ov5640_write_reg(sensor, reg, val >> 8);
+ if (ret)
+ return ret;
+
+ return ov5640_write_reg(sensor, reg + 1, val & 0xff);
+}
+
+static int ov5640_mod_reg(struct ov5640_dev *sensor, u16 reg,
+ u8 mask, u8 val)
+{
+ u8 readval;
+ int ret;
+
+ ret = ov5640_read_reg(sensor, reg, &readval);
+ if (ret)
+ return ret;
+
+ readval &= ~mask;
+ val &= mask;
+ val |= readval;
+
+ return ov5640_write_reg(sensor, reg, val);
+}
+
+/*
+ * After trying the various combinations, reading various
+ * documentations spread around the net, and from the various
+ * feedback, the clock tree is probably as follows:
+ *
+ * +--------------+
+ * | Ext. Clock |
+ * +-+------------+
+ * | +----------+
+ * +->| PLL1 | - reg 0x3036, for the multiplier
+ * +-+--------+ - reg 0x3037, bits 0-3 for the pre-divider
+ * | +--------------+
+ * +->| System Clock | - reg 0x3035, bits 4-7
+ * +-+------------+
+ * | +--------------+
+ * +->| MIPI Divider | - reg 0x3035, bits 0-3
+ * | +-+------------+
+ * | +----------------> MIPI SCLK
+ * | + +-----+
+ * | +->| / 2 |-------> MIPI BIT CLK
+ * | +-----+
+ * | +--------------+
+ * +->| PLL Root Div | - reg 0x3037, bit 4
+ * +-+------------+
+ * | +---------+
+ * +->| Bit Div | - reg 0x3034, bits 0-3
+ * +-+-------+
+ * | +-------------+
+ * +->| SCLK Div | - reg 0x3108, bits 0-1
+ * | +-+-----------+
+ * | +---------------> SCLK
+ * | +-------------+
+ * +->| SCLK 2X Div | - reg 0x3108, bits 2-3
+ * | +-+-----------+
+ * | +---------------> SCLK 2X
+ * | +-------------+
+ * +->| PCLK Div | - reg 0x3108, bits 4-5
+ * ++------------+
+ * + +-----------+
+ * +->| P_DIV | - reg 0x3035, bits 0-3
+ * +-----+-----+
+ * +------------> PCLK
+ *
+ * There seems to be also constraints:
+ * - the PLL pre-divider output rate should be in the 4-27MHz range
+ * - the PLL multiplier output rate should be in the 500-1000MHz range
+ * - PCLK >= SCLK * 2 in YUV, >= SCLK in Raw or JPEG
+ */
+
+/*
+ * This is supposed to be ranging from 1 to 8, but the value is always
+ * set to 3 in the vendor kernels.
+ */
+#define OV5640_PLL_PREDIV 3
+
+#define OV5640_PLL_MULT_MIN 4
+#define OV5640_PLL_MULT_MAX 252
+
+/*
+ * This is supposed to be ranging from 1 to 16, but the value is
+ * always set to either 1 or 2 in the vendor kernels.
+ */
+#define OV5640_SYSDIV_MIN 1
+#define OV5640_SYSDIV_MAX 16
+
+/*
+ * This is supposed to be ranging from 1 to 2, but the value is always
+ * set to 2 in the vendor kernels.
+ */
+#define OV5640_PLL_ROOT_DIV 2
+#define OV5640_PLL_CTRL3_PLL_ROOT_DIV_2 BIT(4)
+
+/*
+ * We only supports 8-bit formats at the moment
+ */
+#define OV5640_BIT_DIV 2
+#define OV5640_PLL_CTRL0_MIPI_MODE_8BIT 0x08
+
+/*
+ * This is supposed to be ranging from 1 to 8, but the value is always
+ * set to 2 in the vendor kernels.
+ */
+#define OV5640_SCLK_ROOT_DIV 2
+
+/*
+ * This is hardcoded so that the consistency is maintained between SCLK and
+ * SCLK 2x.
+ */
+#define OV5640_SCLK2X_ROOT_DIV (OV5640_SCLK_ROOT_DIV / 2)
+
+/*
+ * This is supposed to be ranging from 1 to 8, but the value is always
+ * set to 1 in the vendor kernels.
+ */
+#define OV5640_PCLK_ROOT_DIV 1
+#define OV5640_PLL_SYS_ROOT_DIVIDER_BYPASS 0x00
+
+static unsigned long ov5640_compute_sys_clk(struct ov5640_dev *sensor,
+ u8 pll_prediv, u8 pll_mult,
+ u8 sysdiv)
+{
+ unsigned long sysclk = sensor->xclk_freq / pll_prediv * pll_mult;
+
+ /* PLL1 output cannot exceed 1GHz. */
+ if (sysclk / 1000000 > 1000)
+ return 0;
+
+ return sysclk / sysdiv;
+}
+
+static unsigned long ov5640_calc_sys_clk(struct ov5640_dev *sensor,
+ unsigned long rate,
+ u8 *pll_prediv, u8 *pll_mult,
+ u8 *sysdiv)
+{
+ unsigned long best = ~0;
+ u8 best_sysdiv = 1, best_mult = 1;
+ u8 _sysdiv, _pll_mult;
+
+ for (_sysdiv = OV5640_SYSDIV_MIN;
+ _sysdiv <= OV5640_SYSDIV_MAX;
+ _sysdiv++) {
+ for (_pll_mult = OV5640_PLL_MULT_MIN;
+ _pll_mult <= OV5640_PLL_MULT_MAX;
+ _pll_mult++) {
+ unsigned long _rate;
+
+ /*
+ * The PLL multiplier cannot be odd if above
+ * 127.
+ */
+ if (_pll_mult > 127 && (_pll_mult % 2))
+ continue;
+
+ _rate = ov5640_compute_sys_clk(sensor,
+ OV5640_PLL_PREDIV,
+ _pll_mult, _sysdiv);
+
+ /*
+ * We have reached the maximum allowed PLL1 output,
+ * increase sysdiv.
+ */
+ if (!_rate)
+ break;
+
+ /*
+ * Prefer rates above the expected clock rate than
+ * below, even if that means being less precise.
+ */
+ if (_rate < rate)
+ continue;
+
+ if (abs(rate - _rate) < abs(rate - best)) {
+ best = _rate;
+ best_sysdiv = _sysdiv;
+ best_mult = _pll_mult;
+ }
+
+ if (_rate == rate)
+ goto out;
+ }
+ }
+
+out:
+ *sysdiv = best_sysdiv;
+ *pll_prediv = OV5640_PLL_PREDIV;
+ *pll_mult = best_mult;
+
+ return best;
+}
+
+/*
+ * ov5640_set_mipi_pclk() - Calculate the clock tree configuration values
+ * for the MIPI CSI-2 output.
+ */
+static int ov5640_set_mipi_pclk(struct ov5640_dev *sensor)
+{
+ u8 bit_div, mipi_div, pclk_div, sclk_div, sclk2x_div, root_div;
+ u8 prediv, mult, sysdiv;
+ unsigned long link_freq;
+ unsigned long sysclk;
+ u8 pclk_period;
+ u32 sample_rate;
+ u32 num_lanes;
+ int ret;
+
+ /* Use the link freq computed at ov5640_update_pixel_rate() time. */
+ link_freq = sensor->current_link_freq;
+
+ /*
+ * - mipi_div - Additional divider for the MIPI lane clock.
+ *
+ * Higher link frequencies would make sysclk > 1GHz.
+ * Keep the sysclk low and do not divide in the MIPI domain.
+ */
+ if (link_freq > OV5640_LINK_RATE_MAX)
+ mipi_div = 1;
+ else
+ mipi_div = 2;
+
+ sysclk = link_freq * mipi_div;
+ ov5640_calc_sys_clk(sensor, sysclk, &prediv, &mult, &sysdiv);
+
+ /*
+ * Adjust PLL parameters to maintain the MIPI_SCLK-to-PCLK ratio.
+ *
+ * - root_div = 2 (fixed)
+ * - bit_div : MIPI 8-bit = 2; MIPI 10-bit = 2.5
+ * - pclk_div = 1 (fixed)
+ * - p_div = (2 lanes ? mipi_div : 2 * mipi_div)
+ *
+ * This results in the following MIPI_SCLK depending on the number
+ * of lanes:
+ *
+ * - 2 lanes: MIPI_SCLK = (4 or 5) * PCLK
+ * - 1 lanes: MIPI_SCLK = (8 or 10) * PCLK
+ */
+ root_div = OV5640_PLL_CTRL3_PLL_ROOT_DIV_2;
+ bit_div = OV5640_PLL_CTRL0_MIPI_MODE_8BIT;
+ pclk_div = ilog2(OV5640_PCLK_ROOT_DIV);
+
+ /*
+ * Scaler clock:
+ * - YUV: PCLK >= 2 * SCLK
+ * - RAW or JPEG: PCLK >= SCLK
+ * - sclk2x_div = sclk_div / 2
+ */
+ sclk_div = ilog2(OV5640_SCLK_ROOT_DIV);
+ sclk2x_div = ilog2(OV5640_SCLK2X_ROOT_DIV);
+
+ /*
+ * Set the pixel clock period expressed in ns with 1-bit decimal
+ * (0x01=0.5ns).
+ *
+ * The register is very briefly documented. In the OV5645 datasheet it
+ * is described as (2 * pclk period), and from testing it seems the
+ * actual definition is 2 * 8-bit sample period.
+ *
+ * 2 * sample_period = (mipi_clk * 2 * num_lanes / bpp) * (bpp / 8) / 2
+ */
+ num_lanes = sensor->ep.bus.mipi_csi2.num_data_lanes;
+ sample_rate = (link_freq * mipi_div * num_lanes * 2) / 16;
+ pclk_period = 2000000000UL / sample_rate;
+
+ /* Program the clock tree registers. */
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL0, 0x0f, bit_div);
+ if (ret)
+ return ret;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1, 0xff,
+ (sysdiv << 4) | mipi_div);
+ if (ret)
+ return ret;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2, 0xff, mult);
+ if (ret)
+ return ret;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3, 0x1f,
+ root_div | prediv);
+ if (ret)
+ return ret;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3f,
+ (pclk_div << 4) | (sclk2x_div << 2) | sclk_div);
+ if (ret)
+ return ret;
+
+ return ov5640_write_reg(sensor, OV5640_REG_PCLK_PERIOD, pclk_period);
+}
+
+static u32 ov5640_calc_pixel_rate(struct ov5640_dev *sensor)
+{
+ const struct ov5640_mode_info *mode = sensor->current_mode;
+ const struct ov5640_timings *timings = &mode->dvp_timings;
+ u32 rate;
+
+ rate = timings->htot * (timings->crop.height + timings->vblank_def);
+ rate *= ov5640_framerates[sensor->current_fr];
+
+ return rate;
+}
+
+static unsigned long ov5640_calc_pclk(struct ov5640_dev *sensor,
+ unsigned long rate,
+ u8 *pll_prediv, u8 *pll_mult, u8 *sysdiv,
+ u8 *pll_rdiv, u8 *bit_div, u8 *pclk_div)
+{
+ unsigned long _rate = rate * OV5640_PLL_ROOT_DIV * OV5640_BIT_DIV *
+ OV5640_PCLK_ROOT_DIV;
+
+ _rate = ov5640_calc_sys_clk(sensor, _rate, pll_prediv, pll_mult,
+ sysdiv);
+ *pll_rdiv = OV5640_PLL_ROOT_DIV;
+ *bit_div = OV5640_BIT_DIV;
+ *pclk_div = OV5640_PCLK_ROOT_DIV;
+
+ return _rate / *pll_rdiv / *bit_div / *pclk_div;
+}
+
+static int ov5640_set_dvp_pclk(struct ov5640_dev *sensor)
+{
+ u8 prediv, mult, sysdiv, pll_rdiv, bit_div, pclk_div;
+ u32 rate;
+ int ret;
+
+ rate = ov5640_calc_pixel_rate(sensor);
+ rate *= ov5640_code_to_bpp(sensor, sensor->fmt.code);
+ rate /= sensor->ep.bus.parallel.bus_width;
+
+ ov5640_calc_pclk(sensor, rate, &prediv, &mult, &sysdiv, &pll_rdiv,
+ &bit_div, &pclk_div);
+
+ if (bit_div == 2)
+ bit_div = 8;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL0,
+ 0x0f, bit_div);
+ if (ret)
+ return ret;
+
+ /*
+ * We need to set sysdiv according to the clock, and to clear
+ * the MIPI divider.
+ */
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1,
+ 0xff, sysdiv << 4);
+ if (ret)
+ return ret;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2,
+ 0xff, mult);
+ if (ret)
+ return ret;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3,
+ 0x1f, prediv | ((pll_rdiv - 1) << 4));
+ if (ret)
+ return ret;
+
+ return ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x30,
+ (ilog2(pclk_div) << 4));
+}
+
+/* set JPEG framing sizes */
+static int ov5640_set_jpeg_timings(struct ov5640_dev *sensor,
+ const struct ov5640_mode_info *mode)
+{
+ int ret;
+
+ /*
+ * compression mode 3 timing
+ *
+ * Data is transmitted with programmable width (VFIFO_HSIZE).
+ * No padding done. Last line may have less data. Varying
+ * number of lines per frame, depending on amount of data.
+ */
+ ret = ov5640_mod_reg(sensor, OV5640_REG_JPG_MODE_SELECT, 0x7, 0x3);
+ if (ret < 0)
+ return ret;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_VFIFO_HSIZE, mode->width);
+ if (ret < 0)
+ return ret;
+
+ return ov5640_write_reg16(sensor, OV5640_REG_VFIFO_VSIZE, mode->height);
+}
+
+/* download ov5640 settings to sensor through i2c */
+static int ov5640_set_timings(struct ov5640_dev *sensor,
+ const struct ov5640_mode_info *mode)
+{
+ const struct ov5640_timings *timings;
+ const struct v4l2_rect *analog_crop;
+ const struct v4l2_rect *crop;
+ int ret;
+
+ if (sensor->fmt.code == MEDIA_BUS_FMT_JPEG_1X8) {
+ ret = ov5640_set_jpeg_timings(sensor, mode);
+ if (ret < 0)
+ return ret;
+ }
+
+ timings = ov5640_timings(sensor, mode);
+ analog_crop = &timings->analog_crop;
+ crop = &timings->crop;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HS,
+ analog_crop->left);
+ if (ret < 0)
+ return ret;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VS,
+ analog_crop->top);
+ if (ret < 0)
+ return ret;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HW,
+ analog_crop->left + analog_crop->width - 1);
+ if (ret < 0)
+ return ret;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VH,
+ analog_crop->top + analog_crop->height - 1);
+ if (ret < 0)
+ return ret;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HOFFS, crop->left);
+ if (ret < 0)
+ return ret;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VOFFS, crop->top);
+ if (ret < 0)
+ return ret;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPHO, mode->width);
+ if (ret < 0)
+ return ret;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPVO, mode->height);
+ if (ret < 0)
+ return ret;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HTS, timings->htot);
+ if (ret < 0)
+ return ret;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS,
+ mode->height + timings->vblank_def);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static void ov5640_load_regs(struct ov5640_dev *sensor,
+ const struct reg_value *regs, unsigned int regnum)
+{
+ unsigned int i;
+ u32 delay_ms;
+ u16 reg_addr;
+ u8 mask, val;
+ int ret = 0;
+
+ for (i = 0; i < regnum; ++i, ++regs) {
+ delay_ms = regs->delay_ms;
+ reg_addr = regs->reg_addr;
+ val = regs->val;
+ mask = regs->mask;
+
+ /* remain in power down mode for DVP */
+ if (regs->reg_addr == OV5640_REG_SYS_CTRL0 &&
+ val == OV5640_REG_SYS_CTRL0_SW_PWUP &&
+ !ov5640_is_csi2(sensor))
+ continue;
+
+ if (mask)
+ ret = ov5640_mod_reg(sensor, reg_addr, mask, val);
+ else
+ ret = ov5640_write_reg(sensor, reg_addr, val);
+ if (ret)
+ break;
+
+ if (delay_ms)
+ usleep_range(1000 * delay_ms, 1000 * delay_ms + 100);
+ }
+}
+
+static int ov5640_set_autoexposure(struct ov5640_dev *sensor, bool on)
+{
+ return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,
+ BIT(0), on ? 0 : BIT(0));
+}
+
+/* read exposure, in number of line periods */
+static int ov5640_get_exposure(struct ov5640_dev *sensor)
+{
+ int exp, ret;
+ u8 temp;
+
+ ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_HI, &temp);
+ if (ret)
+ return ret;
+ exp = ((int)temp & 0x0f) << 16;
+ ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_MED, &temp);
+ if (ret)
+ return ret;
+ exp |= ((int)temp << 8);
+ ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_LO, &temp);
+ if (ret)
+ return ret;
+ exp |= (int)temp;
+
+ return exp >> 4;
+}
+
+/* write exposure, given number of line periods */
+static int ov5640_set_exposure(struct ov5640_dev *sensor, u32 exposure)
+{
+ int ret;
+
+ exposure <<= 4;
+
+ ret = ov5640_write_reg(sensor,
+ OV5640_REG_AEC_PK_EXPOSURE_LO,
+ exposure & 0xff);
+ if (ret)
+ return ret;
+ ret = ov5640_write_reg(sensor,
+ OV5640_REG_AEC_PK_EXPOSURE_MED,
+ (exposure >> 8) & 0xff);
+ if (ret)
+ return ret;
+ return ov5640_write_reg(sensor,
+ OV5640_REG_AEC_PK_EXPOSURE_HI,
+ (exposure >> 16) & 0x0f);
+}
+
+static int ov5640_get_gain(struct ov5640_dev *sensor)
+{
+ u16 gain;
+ int ret;
+
+ ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN, &gain);
+ if (ret)
+ return ret;
+
+ return gain & 0x3ff;
+}
+
+static int ov5640_set_gain(struct ov5640_dev *sensor, int gain)
+{
+ return ov5640_write_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN,
+ (u16)gain & 0x3ff);
+}
+
+static int ov5640_set_autogain(struct ov5640_dev *sensor, bool on)
+{
+ return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,
+ BIT(1), on ? 0 : BIT(1));
+}
+
+static int ov5640_set_stream_dvp(struct ov5640_dev *sensor, bool on)
+{
+ return ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0, on ?
+ OV5640_REG_SYS_CTRL0_SW_PWUP :
+ OV5640_REG_SYS_CTRL0_SW_PWDN);
+}
+
+static int ov5640_set_stream_mipi(struct ov5640_dev *sensor, bool on)
+{
+ int ret;
+
+ /*
+ * Enable/disable the MIPI interface
+ *
+ * 0x300e = on ? 0x45 : 0x40
+ *
+ * FIXME: the sensor manual (version 2.03) reports
+ * [7:5] = 000 : 1 data lane mode
+ * [7:5] = 001 : 2 data lanes mode
+ * But this settings do not work, while the following ones
+ * have been validated for 2 data lanes mode.
+ *
+ * [7:5] = 010 : 2 data lanes mode
+ * [4] = 0 : Power up MIPI HS Tx
+ * [3] = 0 : Power up MIPI LS Rx
+ * [2] = 1/0 : MIPI interface enable/disable
+ * [1:0] = 01/00: FIXME: 'debug'
+ */
+ ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00,
+ on ? 0x45 : 0x40);
+ if (ret)
+ return ret;
+
+ return ov5640_write_reg(sensor, OV5640_REG_FRAME_CTRL01,
+ on ? 0x00 : 0x0f);
+}
+
+static int ov5640_get_sysclk(struct ov5640_dev *sensor)
+{
+ /* calculate sysclk */
+ u32 xvclk = sensor->xclk_freq / 10000;
+ u32 multiplier, prediv, VCO, sysdiv, pll_rdiv;
+ u32 sclk_rdiv_map[] = {1, 2, 4, 8};
+ u32 bit_div2x = 1, sclk_rdiv, sysclk;
+ u8 temp1, temp2;
+ int ret;
+
+ ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL0, &temp1);
+ if (ret)
+ return ret;
+ temp2 = temp1 & 0x0f;
+ if (temp2 == 8 || temp2 == 10)
+ bit_div2x = temp2 / 2;
+
+ ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL1, &temp1);
+ if (ret)
+ return ret;
+ sysdiv = temp1 >> 4;
+ if (sysdiv == 0)
+ sysdiv = 16;
+
+ ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL2, &temp1);
+ if (ret)
+ return ret;
+ multiplier = temp1;
+
+ ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL3, &temp1);
+ if (ret)
+ return ret;
+ prediv = temp1 & 0x0f;
+ pll_rdiv = ((temp1 >> 4) & 0x01) + 1;
+
+ ret = ov5640_read_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, &temp1);
+ if (ret)
+ return ret;
+ temp2 = temp1 & 0x03;
+ sclk_rdiv = sclk_rdiv_map[temp2];
+
+ if (!prediv || !sysdiv || !pll_rdiv || !bit_div2x)
+ return -EINVAL;
+
+ VCO = xvclk * multiplier / prediv;
+
+ sysclk = VCO / sysdiv / pll_rdiv * 2 / bit_div2x / sclk_rdiv;
+
+ return sysclk;
+}
+
+static int ov5640_set_night_mode(struct ov5640_dev *sensor)
+{
+ /* read HTS from register settings */
+ u8 mode;
+ int ret;
+
+ ret = ov5640_read_reg(sensor, OV5640_REG_AEC_CTRL00, &mode);
+ if (ret)
+ return ret;
+ mode &= 0xfb;
+ return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL00, mode);
+}
+
+static int ov5640_get_hts(struct ov5640_dev *sensor)
+{
+ /* read HTS from register settings */
+ u16 hts;
+ int ret;
+
+ ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_HTS, &hts);
+ if (ret)
+ return ret;
+ return hts;
+}
+
+static int ov5640_get_vts(struct ov5640_dev *sensor)
+{
+ u16 vts;
+ int ret;
+
+ ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_VTS, &vts);
+ if (ret)
+ return ret;
+ return vts;
+}
+
+static int ov5640_set_vts(struct ov5640_dev *sensor, int vts)
+{
+ return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, vts);
+}
+
+static int ov5640_get_light_freq(struct ov5640_dev *sensor)
+{
+ /* get banding filter value */
+ int ret, light_freq = 0;
+ u8 temp, temp1;
+
+ ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL01, &temp);
+ if (ret)
+ return ret;
+
+ if (temp & 0x80) {
+ /* manual */
+ ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL00,
+ &temp1);
+ if (ret)
+ return ret;
+ if (temp1 & 0x04) {
+ /* 50Hz */
+ light_freq = 50;
+ } else {
+ /* 60Hz */
+ light_freq = 60;
+ }
+ } else {
+ /* auto */
+ ret = ov5640_read_reg(sensor, OV5640_REG_SIGMADELTA_CTRL0C,
+ &temp1);
+ if (ret)
+ return ret;
+
+ if (temp1 & 0x01) {
+ /* 50Hz */
+ light_freq = 50;
+ } else {
+ /* 60Hz */
+ }
+ }
+
+ return light_freq;
+}
+
+static int ov5640_set_bandingfilter(struct ov5640_dev *sensor)
+{
+ u32 band_step60, max_band60, band_step50, max_band50, prev_vts;
+ int ret;
+
+ /* read preview PCLK */
+ ret = ov5640_get_sysclk(sensor);
+ if (ret < 0)
+ return ret;
+ if (ret == 0)
+ return -EINVAL;
+ sensor->prev_sysclk = ret;
+ /* read preview HTS */
+ ret = ov5640_get_hts(sensor);
+ if (ret < 0)
+ return ret;
+ if (ret == 0)
+ return -EINVAL;
+ sensor->prev_hts = ret;
+
+ /* read preview VTS */
+ ret = ov5640_get_vts(sensor);
+ if (ret < 0)
+ return ret;
+ prev_vts = ret;
+
+ /* calculate banding filter */
+ /* 60Hz */
+ band_step60 = sensor->prev_sysclk * 100 / sensor->prev_hts * 100 / 120;
+ ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B60_STEP, band_step60);
+ if (ret)
+ return ret;
+ if (!band_step60)
+ return -EINVAL;
+ max_band60 = (int)((prev_vts - 4) / band_step60);
+ ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0D, max_band60);
+ if (ret)
+ return ret;
+
+ /* 50Hz */
+ band_step50 = sensor->prev_sysclk * 100 / sensor->prev_hts;
+ ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B50_STEP, band_step50);
+ if (ret)
+ return ret;
+ if (!band_step50)
+ return -EINVAL;
+ max_band50 = (int)((prev_vts - 4) / band_step50);
+ return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0E, max_band50);
+}
+
+static int ov5640_set_ae_target(struct ov5640_dev *sensor, int target)
+{
+ /* stable in high */
+ u32 fast_high, fast_low;
+ int ret;
+
+ sensor->ae_low = target * 23 / 25; /* 0.92 */
+ sensor->ae_high = target * 27 / 25; /* 1.08 */
+
+ fast_high = sensor->ae_high << 1;
+ if (fast_high > 255)
+ fast_high = 255;
+
+ fast_low = sensor->ae_low >> 1;
+
+ ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0F, sensor->ae_high);
+ if (ret)
+ return ret;
+ ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL10, sensor->ae_low);
+ if (ret)
+ return ret;
+ ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1B, sensor->ae_high);
+ if (ret)
+ return ret;
+ ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1E, sensor->ae_low);
+ if (ret)
+ return ret;
+ ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL11, fast_high);
+ if (ret)
+ return ret;
+ return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1F, fast_low);
+}
+
+static int ov5640_get_binning(struct ov5640_dev *sensor)
+{
+ u8 temp;
+ int ret;
+
+ ret = ov5640_read_reg(sensor, OV5640_REG_TIMING_TC_REG21, &temp);
+ if (ret)
+ return ret;
+
+ return temp & BIT(0);
+}
+
+static int ov5640_set_binning(struct ov5640_dev *sensor, bool enable)
+{
+ int ret;
+
+ /*
+ * TIMING TC REG21:
+ * - [0]: Horizontal binning enable
+ */
+ ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
+ BIT(0), enable ? BIT(0) : 0);
+ if (ret)
+ return ret;
+ /*
+ * TIMING TC REG20:
+ * - [0]: Undocumented, but hardcoded init sequences
+ * are always setting REG21/REG20 bit 0 to same value...
+ */
+ return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
+ BIT(0), enable ? BIT(0) : 0);
+}
+
+static int ov5640_set_virtual_channel(struct ov5640_dev *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ u8 temp, channel = virtual_channel;
+ int ret;
+
+ if (channel > 3) {
+ dev_err(&client->dev,
+ "%s: wrong virtual_channel parameter, expected (0..3), got %d\n",
+ __func__, channel);
+ return -EINVAL;
+ }
+
+ ret = ov5640_read_reg(sensor, OV5640_REG_DEBUG_MODE, &temp);
+ if (ret)
+ return ret;
+ temp &= ~(3 << 6);
+ temp |= (channel << 6);
+ return ov5640_write_reg(sensor, OV5640_REG_DEBUG_MODE, temp);
+}
+
+static const struct ov5640_mode_info *
+ov5640_find_mode(struct ov5640_dev *sensor, int width, int height, bool nearest)
+{
+ const struct ov5640_mode_info *mode;
+
+ mode = v4l2_find_nearest_size(ov5640_mode_data,
+ ARRAY_SIZE(ov5640_mode_data),
+ width, height, width, height);
+
+ if (!mode ||
+ (!nearest &&
+ (mode->width != width || mode->height != height)))
+ return NULL;
+
+ return mode;
+}
+
+/*
+ * sensor changes between scaling and subsampling, go through
+ * exposure calculation
+ */
+static int ov5640_set_mode_exposure_calc(struct ov5640_dev *sensor,
+ const struct ov5640_mode_info *mode)
+{
+ u32 prev_shutter, prev_gain16;
+ u32 cap_shutter, cap_gain16;
+ u32 cap_sysclk, cap_hts, cap_vts;
+ u32 light_freq, cap_bandfilt, cap_maxband;
+ u32 cap_gain16_shutter;
+ u8 average;
+ int ret;
+
+ if (!mode->reg_data)
+ return -EINVAL;
+
+ /* read preview shutter */
+ ret = ov5640_get_exposure(sensor);
+ if (ret < 0)
+ return ret;
+ prev_shutter = ret;
+ ret = ov5640_get_binning(sensor);
+ if (ret < 0)
+ return ret;
+ if (ret && mode->id != OV5640_MODE_720P_1280_720 &&
+ mode->id != OV5640_MODE_1080P_1920_1080)
+ prev_shutter *= 2;
+
+ /* read preview gain */
+ ret = ov5640_get_gain(sensor);
+ if (ret < 0)
+ return ret;
+ prev_gain16 = ret;
+
+ /* get average */
+ ret = ov5640_read_reg(sensor, OV5640_REG_AVG_READOUT, &average);
+ if (ret)
+ return ret;
+
+ /* turn off night mode for capture */
+ ret = ov5640_set_night_mode(sensor);
+ if (ret < 0)
+ return ret;
+
+ /* Write capture setting */
+ ov5640_load_regs(sensor, mode->reg_data, mode->reg_data_size);
+ ret = ov5640_set_timings(sensor, mode);
+ if (ret < 0)
+ return ret;
+
+ /* read capture VTS */
+ ret = ov5640_get_vts(sensor);
+ if (ret < 0)
+ return ret;
+ cap_vts = ret;
+ ret = ov5640_get_hts(sensor);
+ if (ret < 0)
+ return ret;
+ if (ret == 0)
+ return -EINVAL;
+ cap_hts = ret;
+
+ ret = ov5640_get_sysclk(sensor);
+ if (ret < 0)
+ return ret;
+ if (ret == 0)
+ return -EINVAL;
+ cap_sysclk = ret;
+
+ /* calculate capture banding filter */
+ ret = ov5640_get_light_freq(sensor);
+ if (ret < 0)
+ return ret;
+ light_freq = ret;
+
+ if (light_freq == 60) {
+ /* 60Hz */
+ cap_bandfilt = cap_sysclk * 100 / cap_hts * 100 / 120;
+ } else {
+ /* 50Hz */
+ cap_bandfilt = cap_sysclk * 100 / cap_hts;
+ }
+
+ if (!sensor->prev_sysclk) {
+ ret = ov5640_get_sysclk(sensor);
+ if (ret < 0)
+ return ret;
+ if (ret == 0)
+ return -EINVAL;
+ sensor->prev_sysclk = ret;
+ }
+
+ if (!cap_bandfilt)
+ return -EINVAL;
+
+ cap_maxband = (int)((cap_vts - 4) / cap_bandfilt);
+
+ /* calculate capture shutter/gain16 */
+ if (average > sensor->ae_low && average < sensor->ae_high) {
+ /* in stable range */
+ cap_gain16_shutter =
+ prev_gain16 * prev_shutter *
+ cap_sysclk / sensor->prev_sysclk *
+ sensor->prev_hts / cap_hts *
+ sensor->ae_target / average;
+ } else {
+ cap_gain16_shutter =
+ prev_gain16 * prev_shutter *
+ cap_sysclk / sensor->prev_sysclk *
+ sensor->prev_hts / cap_hts;
+ }
+
+ /* gain to shutter */
+ if (cap_gain16_shutter < (cap_bandfilt * 16)) {
+ /* shutter < 1/100 */
+ cap_shutter = cap_gain16_shutter / 16;
+ if (cap_shutter < 1)
+ cap_shutter = 1;
+
+ cap_gain16 = cap_gain16_shutter / cap_shutter;
+ if (cap_gain16 < 16)
+ cap_gain16 = 16;
+ } else {
+ if (cap_gain16_shutter > (cap_bandfilt * cap_maxband * 16)) {
+ /* exposure reach max */
+ cap_shutter = cap_bandfilt * cap_maxband;
+ if (!cap_shutter)
+ return -EINVAL;
+
+ cap_gain16 = cap_gain16_shutter / cap_shutter;
+ } else {
+ /* 1/100 < (cap_shutter = n/100) =< max */
+ cap_shutter =
+ ((int)(cap_gain16_shutter / 16 / cap_bandfilt))
+ * cap_bandfilt;
+ if (!cap_shutter)
+ return -EINVAL;
+
+ cap_gain16 = cap_gain16_shutter / cap_shutter;
+ }
+ }
+
+ /* set capture gain */
+ ret = ov5640_set_gain(sensor, cap_gain16);
+ if (ret)
+ return ret;
+
+ /* write capture shutter */
+ if (cap_shutter > (cap_vts - 4)) {
+ cap_vts = cap_shutter + 4;
+ ret = ov5640_set_vts(sensor, cap_vts);
+ if (ret < 0)
+ return ret;
+ }
+
+ /* set exposure */
+ return ov5640_set_exposure(sensor, cap_shutter);
+}
+
+/*
+ * if sensor changes inside scaling or subsampling
+ * change mode directly
+ */
+static int ov5640_set_mode_direct(struct ov5640_dev *sensor,
+ const struct ov5640_mode_info *mode)
+{
+ if (!mode->reg_data)
+ return -EINVAL;
+
+ /* Write capture setting */
+ ov5640_load_regs(sensor, mode->reg_data, mode->reg_data_size);
+ return ov5640_set_timings(sensor, mode);
+}
+
+static int ov5640_set_mode(struct ov5640_dev *sensor)
+{
+ const struct ov5640_mode_info *mode = sensor->current_mode;
+ const struct ov5640_mode_info *orig_mode = sensor->last_mode;
+ enum ov5640_downsize_mode dn_mode, orig_dn_mode;
+ bool auto_gain = sensor->ctrls.auto_gain->val == 1;
+ bool auto_exp = sensor->ctrls.auto_exp->val == V4L2_EXPOSURE_AUTO;
+ int ret;
+
+ dn_mode = mode->dn_mode;
+ orig_dn_mode = orig_mode->dn_mode;
+
+ /* auto gain and exposure must be turned off when changing modes */
+ if (auto_gain) {
+ ret = ov5640_set_autogain(sensor, false);
+ if (ret)
+ return ret;
+ }
+
+ if (auto_exp) {
+ ret = ov5640_set_autoexposure(sensor, false);
+ if (ret)
+ goto restore_auto_gain;
+ }
+
+ if (ov5640_is_csi2(sensor))
+ ret = ov5640_set_mipi_pclk(sensor);
+ else
+ ret = ov5640_set_dvp_pclk(sensor);
+ if (ret < 0)
+ return 0;
+
+ if ((dn_mode == SUBSAMPLING && orig_dn_mode == SCALING) ||
+ (dn_mode == SCALING && orig_dn_mode == SUBSAMPLING)) {
+ /*
+ * change between subsampling and scaling
+ * go through exposure calculation
+ */
+ ret = ov5640_set_mode_exposure_calc(sensor, mode);
+ } else {
+ /*
+ * change inside subsampling or scaling
+ * download firmware directly
+ */
+ ret = ov5640_set_mode_direct(sensor, mode);
+ }
+ if (ret < 0)
+ goto restore_auto_exp_gain;
+
+ /* restore auto gain and exposure */
+ if (auto_gain)
+ ov5640_set_autogain(sensor, true);
+ if (auto_exp)
+ ov5640_set_autoexposure(sensor, true);
+
+ ret = ov5640_set_binning(sensor, dn_mode != SCALING);
+ if (ret < 0)
+ return ret;
+ ret = ov5640_set_ae_target(sensor, sensor->ae_target);
+ if (ret < 0)
+ return ret;
+ ret = ov5640_get_light_freq(sensor);
+ if (ret < 0)
+ return ret;
+ ret = ov5640_set_bandingfilter(sensor);
+ if (ret < 0)
+ return ret;
+ ret = ov5640_set_virtual_channel(sensor);
+ if (ret < 0)
+ return ret;
+
+ sensor->pending_mode_change = false;
+ sensor->last_mode = mode;
+
+ return 0;
+
+restore_auto_exp_gain:
+ if (auto_exp)
+ ov5640_set_autoexposure(sensor, true);
+restore_auto_gain:
+ if (auto_gain)
+ ov5640_set_autogain(sensor, true);
+
+ return ret;
+}
+
+static int ov5640_set_framefmt(struct ov5640_dev *sensor,
+ struct v4l2_mbus_framefmt *format);
+
+/* restore the last set video mode after chip power-on */
+static int ov5640_restore_mode(struct ov5640_dev *sensor)
+{
+ int ret;
+
+ /* first load the initial register values */
+ ov5640_load_regs(sensor, ov5640_init_setting,
+ ARRAY_SIZE(ov5640_init_setting));
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3f,
+ (ilog2(OV5640_SCLK2X_ROOT_DIV) << 2) |
+ ilog2(OV5640_SCLK_ROOT_DIV));
+ if (ret)
+ return ret;
+
+ /* now restore the last capture mode */
+ ret = ov5640_set_mode(sensor);
+ if (ret < 0)
+ return ret;
+
+ return ov5640_set_framefmt(sensor, &sensor->fmt);
+}
+
+static void ov5640_power(struct ov5640_dev *sensor, bool enable)
+{
+ gpiod_set_value_cansleep(sensor->pwdn_gpio, enable ? 0 : 1);
+}
+
+/*
+ * From section 2.7 power up sequence:
+ * t0 + t1 + t2 >= 5ms Delay from DOVDD stable to PWDN pull down
+ * t3 >= 1ms Delay from PWDN pull down to RESETB pull up
+ * t4 >= 20ms Delay from RESETB pull up to SCCB (i2c) stable
+ *
+ * Some modules don't expose RESETB/PWDN pins directly, instead providing a
+ * "PWUP" GPIO which is wired through appropriate delays and inverters to the
+ * pins.
+ *
+ * In such cases, this gpio should be mapped to pwdn_gpio in the driver, and we
+ * should still toggle the pwdn_gpio below with the appropriate delays, while
+ * the calls to reset_gpio will be ignored.
+ */
+static void ov5640_powerup_sequence(struct ov5640_dev *sensor)
+{
+ if (sensor->pwdn_gpio) {
+ gpiod_set_value_cansleep(sensor->reset_gpio, 1);
+
+ /* camera power cycle */
+ ov5640_power(sensor, false);
+ usleep_range(5000, 10000); /* t2 */
+ ov5640_power(sensor, true);
+ usleep_range(1000, 2000); /* t3 */
+
+ gpiod_set_value_cansleep(sensor->reset_gpio, 0);
+ } else {
+ /* software reset */
+ ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0,
+ OV5640_REG_SYS_CTRL0_SW_RST);
+ }
+ usleep_range(20000, 25000); /* t4 */
+
+ /*
+ * software standby: allows registers programming;
+ * exit at restore_mode() for CSI, s_stream(1) for DVP
+ */
+ ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0,
+ OV5640_REG_SYS_CTRL0_SW_PWDN);
+}
+
+static int ov5640_set_power_on(struct ov5640_dev *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ int ret;
+
+ ret = clk_prepare_enable(sensor->xclk);
+ if (ret) {
+ dev_err(&client->dev, "%s: failed to enable clock\n",
+ __func__);
+ return ret;
+ }
+
+ ret = regulator_bulk_enable(OV5640_NUM_SUPPLIES,
+ sensor->supplies);
+ if (ret) {
+ dev_err(&client->dev, "%s: failed to enable regulators\n",
+ __func__);
+ goto xclk_off;
+ }
+
+ ov5640_powerup_sequence(sensor);
+
+ ret = ov5640_init_slave_id(sensor);
+ if (ret)
+ goto power_off;
+
+ return 0;
+
+power_off:
+ ov5640_power(sensor, false);
+ regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
+xclk_off:
+ clk_disable_unprepare(sensor->xclk);
+ return ret;
+}
+
+static void ov5640_set_power_off(struct ov5640_dev *sensor)
+{
+ ov5640_power(sensor, false);
+ regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
+ clk_disable_unprepare(sensor->xclk);
+}
+
+static int ov5640_set_power_mipi(struct ov5640_dev *sensor, bool on)
+{
+ int ret;
+
+ if (!on) {
+ /* Reset MIPI bus settings to their default values. */
+ ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x58);
+ ov5640_write_reg(sensor, OV5640_REG_MIPI_CTRL00, 0x04);
+ ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT00, 0x00);
+ return 0;
+ }
+
+ /*
+ * Power up MIPI HS Tx and LS Rx; 2 data lanes mode
+ *
+ * 0x300e = 0x40
+ * [7:5] = 010 : 2 data lanes mode (see FIXME note in
+ * "ov5640_set_stream_mipi()")
+ * [4] = 0 : Power up MIPI HS Tx
+ * [3] = 0 : Power up MIPI LS Rx
+ * [2] = 1 : MIPI interface enabled
+ */
+ ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x44);
+ if (ret)
+ return ret;
+
+ /*
+ * Gate clock and set LP11 in 'no packets mode' (idle)
+ *
+ * 0x4800 = 0x24
+ * [5] = 1 : Gate clock when 'no packets'
+ * [2] = 1 : MIPI bus in LP11 when 'no packets'
+ */
+ ret = ov5640_write_reg(sensor, OV5640_REG_MIPI_CTRL00, 0x24);
+ if (ret)
+ return ret;
+
+ /*
+ * Set data lanes and clock in LP11 when 'sleeping'
+ *
+ * 0x3019 = 0x70
+ * [6] = 1 : MIPI data lane 2 in LP11 when 'sleeping'
+ * [5] = 1 : MIPI data lane 1 in LP11 when 'sleeping'
+ * [4] = 1 : MIPI clock lane in LP11 when 'sleeping'
+ */
+ ret = ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT00, 0x70);
+ if (ret)
+ return ret;
+
+ /* Give lanes some time to coax into LP11 state. */
+ usleep_range(500, 1000);
+
+ return 0;
+}
+
+static int ov5640_set_power_dvp(struct ov5640_dev *sensor, bool on)
+{
+ unsigned int flags = sensor->ep.bus.parallel.flags;
+ bool bt656 = sensor->ep.bus_type == V4L2_MBUS_BT656;
+ u8 polarities = 0;
+ int ret;
+
+ if (!on) {
+ /* Reset settings to their default values. */
+ ov5640_write_reg(sensor, OV5640_REG_CCIR656_CTRL00, 0x00);
+ ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x58);
+ ov5640_write_reg(sensor, OV5640_REG_POLARITY_CTRL00, 0x20);
+ ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE01, 0x00);
+ ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE02, 0x00);
+ return 0;
+ }
+
+ /*
+ * Note about parallel port configuration.
+ *
+ * When configured in parallel mode, the OV5640 will
+ * output 10 bits data on DVP data lines [9:0].
+ * If only 8 bits data are wanted, the 8 bits data lines
+ * of the camera interface must be physically connected
+ * on the DVP data lines [9:2].
+ *
+ * Control lines polarity can be configured through
+ * devicetree endpoint control lines properties.
+ * If no endpoint control lines properties are set,
+ * polarity will be as below:
+ * - VSYNC: active high
+ * - HREF: active low
+ * - PCLK: active low
+ *
+ * VSYNC & HREF are not configured if BT656 bus mode is selected
+ */
+
+ /*
+ * BT656 embedded synchronization configuration
+ *
+ * CCIR656 CTRL00
+ * - [7]: SYNC code selection (0: auto generate sync code,
+ * 1: sync code from regs 0x4732-0x4735)
+ * - [6]: f value in CCIR656 SYNC code when fixed f value
+ * - [5]: Fixed f value
+ * - [4:3]: Blank toggle data options (00: data=1'h040/1'h200,
+ * 01: data from regs 0x4736-0x4738, 10: always keep 0)
+ * - [1]: Clip data disable
+ * - [0]: CCIR656 mode enable
+ *
+ * Default CCIR656 SAV/EAV mode with default codes
+ * SAV=0xff000080 & EAV=0xff00009d is enabled here with settings:
+ * - CCIR656 mode enable
+ * - auto generation of sync codes
+ * - blank toggle data 1'h040/1'h200
+ * - clip reserved data (0x00 & 0xff changed to 0x01 & 0xfe)
+ */
+ ret = ov5640_write_reg(sensor, OV5640_REG_CCIR656_CTRL00,
+ bt656 ? 0x01 : 0x00);
+ if (ret)
+ return ret;
+
+ /*
+ * configure parallel port control lines polarity
+ *
+ * POLARITY CTRL0
+ * - [5]: PCLK polarity (0: active low, 1: active high)
+ * - [1]: HREF polarity (0: active low, 1: active high)
+ * - [0]: VSYNC polarity (mismatch here between
+ * datasheet and hardware, 0 is active high
+ * and 1 is active low...)
+ */
+ if (!bt656) {
+ if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
+ polarities |= BIT(1);
+ if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
+ polarities |= BIT(0);
+ }
+ if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
+ polarities |= BIT(5);
+
+ ret = ov5640_write_reg(sensor, OV5640_REG_POLARITY_CTRL00, polarities);
+ if (ret)
+ return ret;
+
+ /*
+ * powerdown MIPI TX/RX PHY & enable DVP
+ *
+ * MIPI CONTROL 00
+ * [4] = 1 : Power down MIPI HS Tx
+ * [3] = 1 : Power down MIPI LS Rx
+ * [2] = 0 : DVP enable (MIPI disable)
+ */
+ ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x18);
+ if (ret)
+ return ret;
+
+ /*
+ * enable VSYNC/HREF/PCLK DVP control lines
+ * & D[9:6] DVP data lines
+ *
+ * PAD OUTPUT ENABLE 01
+ * - 6: VSYNC output enable
+ * - 5: HREF output enable
+ * - 4: PCLK output enable
+ * - [3:0]: D[9:6] output enable
+ */
+ ret = ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE01,
+ bt656 ? 0x1f : 0x7f);
+ if (ret)
+ return ret;
+
+ /*
+ * enable D[5:0] DVP data lines
+ *
+ * PAD OUTPUT ENABLE 02
+ * - [7:2]: D[5:0] output enable
+ */
+ return ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE02, 0xfc);
+}
+
+static int ov5640_set_power(struct ov5640_dev *sensor, bool on)
+{
+ int ret = 0;
+
+ if (on) {
+ ret = ov5640_set_power_on(sensor);
+ if (ret)
+ return ret;
+
+ ret = ov5640_restore_mode(sensor);
+ if (ret)
+ goto power_off;
+ }
+
+ if (sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY)
+ ret = ov5640_set_power_mipi(sensor, on);
+ else
+ ret = ov5640_set_power_dvp(sensor, on);
+ if (ret)
+ goto power_off;
+
+ if (!on)
+ ov5640_set_power_off(sensor);
+
+ return 0;
+
+power_off:
+ ov5640_set_power_off(sensor);
+ return ret;
+}
+
+static int ov5640_sensor_suspend(struct device *dev)
+{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct ov5640_dev *ov5640 = to_ov5640_dev(sd);
+
+ return ov5640_set_power(ov5640, false);
+}
+
+static int ov5640_sensor_resume(struct device *dev)
+{
+ struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct ov5640_dev *ov5640 = to_ov5640_dev(sd);
+
+ return ov5640_set_power(ov5640, true);
+}
+
+/* --------------- Subdev Operations --------------- */
+
+static int ov5640_try_frame_interval(struct ov5640_dev *sensor,
+ struct v4l2_fract *fi,
+ const struct ov5640_mode_info *mode_info)
+{
+ const struct ov5640_mode_info *mode = mode_info;
+ enum ov5640_frame_rate rate = OV5640_15_FPS;
+ int minfps, maxfps, best_fps, fps;
+ int i;
+
+ minfps = ov5640_framerates[OV5640_15_FPS];
+ maxfps = ov5640_framerates[mode->max_fps];
+
+ if (fi->numerator == 0) {
+ fi->denominator = maxfps;
+ fi->numerator = 1;
+ rate = mode->max_fps;
+ goto find_mode;
+ }
+
+ fps = clamp_val(DIV_ROUND_CLOSEST(fi->denominator, fi->numerator),
+ minfps, maxfps);
+
+ best_fps = minfps;
+ for (i = 0; i < ARRAY_SIZE(ov5640_framerates); i++) {
+ int curr_fps = ov5640_framerates[i];
+
+ if (abs(curr_fps - fps) < abs(best_fps - fps)) {
+ best_fps = curr_fps;
+ rate = i;
+ }
+ }
+
+ fi->numerator = 1;
+ fi->denominator = best_fps;
+
+find_mode:
+ mode = ov5640_find_mode(sensor, mode->width, mode->height, false);
+ return mode ? rate : -EINVAL;
+}
+
+static int ov5640_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *format)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ struct v4l2_mbus_framefmt *fmt;
+
+ if (format->pad != 0)
+ return -EINVAL;
+
+ mutex_lock(&sensor->lock);
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY)
+ fmt = v4l2_subdev_get_try_format(&sensor->sd, sd_state,
+ format->pad);
+ else
+ fmt = &sensor->fmt;
+
+ format->format = *fmt;
+
+ mutex_unlock(&sensor->lock);
+
+ return 0;
+}
+
+static int ov5640_try_fmt_internal(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *fmt,
+ const struct ov5640_mode_info **new_mode)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ const struct ov5640_mode_info *mode;
+ const struct ov5640_pixfmt *pixfmt;
+ unsigned int bpp;
+
+ mode = ov5640_find_mode(sensor, fmt->width, fmt->height, true);
+ if (!mode)
+ return -EINVAL;
+
+ pixfmt = ov5640_code_to_pixfmt(sensor, fmt->code);
+ bpp = pixfmt->bpp;
+
+ /*
+ * Adjust mode according to bpp:
+ * - 8bpp modes work for resolution >= 1280x720
+ * - 24bpp modes work resolution < 1280x720
+ */
+ if (bpp == 8 && mode->width < 1280)
+ mode = &ov5640_mode_data[OV5640_MODE_720P_1280_720];
+ else if (bpp == 24 && mode->width > 1024)
+ mode = &ov5640_mode_data[OV5640_MODE_XGA_1024_768];
+
+ fmt->width = mode->width;
+ fmt->height = mode->height;
+
+ if (new_mode)
+ *new_mode = mode;
+
+ fmt->code = pixfmt->code;
+ fmt->colorspace = pixfmt->colorspace;
+ fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+ fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
+ fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+
+ return 0;
+}
+
+static void __v4l2_ctrl_vblank_update(struct ov5640_dev *sensor, u32 vblank)
+{
+ const struct ov5640_mode_info *mode = sensor->current_mode;
+
+ __v4l2_ctrl_modify_range(sensor->ctrls.vblank, OV5640_MIN_VBLANK,
+ OV5640_MAX_VTS - mode->height, 1, vblank);
+
+ __v4l2_ctrl_s_ctrl(sensor->ctrls.vblank, vblank);
+}
+
+static int ov5640_update_pixel_rate(struct ov5640_dev *sensor)
+{
+ const struct ov5640_mode_info *mode = sensor->current_mode;
+ enum ov5640_pixel_rate_id pixel_rate_id = mode->pixel_rate;
+ struct v4l2_mbus_framefmt *fmt = &sensor->fmt;
+ const struct ov5640_timings *timings = ov5640_timings(sensor, mode);
+ s32 exposure_val, exposure_max;
+ unsigned int hblank;
+ unsigned int i = 0;
+ u32 pixel_rate;
+ s64 link_freq;
+ u32 num_lanes;
+ u32 vblank;
+ u32 bpp;
+
+ /*
+ * Update the pixel rate control value.
+ *
+ * For DVP mode, maintain the pixel rate calculation using fixed FPS.
+ */
+ if (!ov5640_is_csi2(sensor)) {
+ __v4l2_ctrl_s_ctrl_int64(sensor->ctrls.pixel_rate,
+ ov5640_calc_pixel_rate(sensor));
+
+ __v4l2_ctrl_vblank_update(sensor, timings->vblank_def);
+
+ return 0;
+ }
+
+ /*
+ * The MIPI CSI-2 link frequency should comply with the CSI-2
+ * specification and be lower than 1GHz.
+ *
+ * Start from the suggested pixel_rate for the current mode and
+ * progressively slow it down if it exceeds 1GHz.
+ */
+ num_lanes = sensor->ep.bus.mipi_csi2.num_data_lanes;
+ bpp = ov5640_code_to_bpp(sensor, fmt->code);
+ do {
+ pixel_rate = ov5640_pixel_rates[pixel_rate_id];
+ link_freq = pixel_rate * bpp / (2 * num_lanes);
+ } while (link_freq >= 1000000000U &&
+ ++pixel_rate_id < OV5640_NUM_PIXEL_RATES);
+
+ sensor->current_link_freq = link_freq;
+
+ /*
+ * Higher link rates require the clock tree to be programmed with
+ * 'mipi_div' = 1; this has the effect of halving the actual output
+ * pixel rate in the MIPI domain.
+ *
+ * Adjust the pixel rate and link frequency control value to report it
+ * correctly to userspace.
+ */
+ if (link_freq > OV5640_LINK_RATE_MAX) {
+ pixel_rate /= 2;
+ link_freq /= 2;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ov5640_csi2_link_freqs); ++i) {
+ if (ov5640_csi2_link_freqs[i] == link_freq)
+ break;
+ }
+ WARN_ON(i == ARRAY_SIZE(ov5640_csi2_link_freqs));
+
+ __v4l2_ctrl_s_ctrl_int64(sensor->ctrls.pixel_rate, pixel_rate);
+ __v4l2_ctrl_s_ctrl(sensor->ctrls.link_freq, i);
+
+ hblank = timings->htot - mode->width;
+ __v4l2_ctrl_modify_range(sensor->ctrls.hblank,
+ hblank, hblank, 1, hblank);
+
+ vblank = timings->vblank_def;
+ __v4l2_ctrl_vblank_update(sensor, vblank);
+
+ exposure_max = timings->crop.height + vblank - 4;
+ exposure_val = clamp_t(s32, sensor->ctrls.exposure->val,
+ sensor->ctrls.exposure->minimum,
+ exposure_max);
+
+ __v4l2_ctrl_modify_range(sensor->ctrls.exposure,
+ sensor->ctrls.exposure->minimum,
+ exposure_max, 1, exposure_val);
+
+ return 0;
+}
+
+static int ov5640_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_format *format)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ const struct ov5640_mode_info *new_mode;
+ struct v4l2_mbus_framefmt *mbus_fmt = &format->format;
+ int ret;
+
+ if (format->pad != 0)
+ return -EINVAL;
+
+ mutex_lock(&sensor->lock);
+
+ if (sensor->streaming) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ret = ov5640_try_fmt_internal(sd, mbus_fmt, &new_mode);
+ if (ret)
+ goto out;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+ *v4l2_subdev_get_try_format(sd, sd_state, 0) = *mbus_fmt;
+ goto out;
+ }
+
+ if (new_mode != sensor->current_mode) {
+ sensor->current_fr = new_mode->def_fps;
+ sensor->current_mode = new_mode;
+ sensor->pending_mode_change = true;
+ }
+ if (mbus_fmt->code != sensor->fmt.code)
+ sensor->pending_fmt_change = true;
+
+ /* update format even if code is unchanged, resolution might change */
+ sensor->fmt = *mbus_fmt;
+
+ ov5640_update_pixel_rate(sensor);
+
+out:
+ mutex_unlock(&sensor->lock);
+ return ret;
+}
+
+static int ov5640_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_selection *sel)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ const struct ov5640_mode_info *mode = sensor->current_mode;
+ const struct ov5640_timings *timings;
+
+ switch (sel->target) {
+ case V4L2_SEL_TGT_CROP: {
+ mutex_lock(&sensor->lock);
+ timings = ov5640_timings(sensor, mode);
+ sel->r = timings->analog_crop;
+ mutex_unlock(&sensor->lock);
+
+ return 0;
+ }
+
+ case V4L2_SEL_TGT_NATIVE_SIZE:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ sel->r.top = 0;
+ sel->r.left = 0;
+ sel->r.width = OV5640_NATIVE_WIDTH;
+ sel->r.height = OV5640_NATIVE_HEIGHT;
+
+ return 0;
+
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ sel->r.top = OV5640_PIXEL_ARRAY_TOP;
+ sel->r.left = OV5640_PIXEL_ARRAY_LEFT;
+ sel->r.width = OV5640_PIXEL_ARRAY_WIDTH;
+ sel->r.height = OV5640_PIXEL_ARRAY_HEIGHT;
+
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int ov5640_set_framefmt(struct ov5640_dev *sensor,
+ struct v4l2_mbus_framefmt *format)
+{
+ bool is_jpeg = format->code == MEDIA_BUS_FMT_JPEG_1X8;
+ const struct ov5640_pixfmt *pixfmt;
+ int ret = 0;
+
+ pixfmt = ov5640_code_to_pixfmt(sensor, format->code);
+
+ /* FORMAT CONTROL00: YUV and RGB formatting */
+ ret = ov5640_write_reg(sensor, OV5640_REG_FORMAT_CONTROL00,
+ pixfmt->ctrl00);
+ if (ret)
+ return ret;
+
+ /* FORMAT MUX CONTROL: ISP YUV or RGB */
+ ret = ov5640_write_reg(sensor, OV5640_REG_ISP_FORMAT_MUX_CTRL,
+ pixfmt->mux);
+ if (ret)
+ return ret;
+
+ /*
+ * TIMING TC REG21:
+ * - [5]: JPEG enable
+ */
+ ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
+ BIT(5), is_jpeg ? BIT(5) : 0);
+ if (ret)
+ return ret;
+
+ /*
+ * SYSTEM RESET02:
+ * - [4]: Reset JFIFO
+ * - [3]: Reset SFIFO
+ * - [2]: Reset JPEG
+ */
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_RESET02,
+ BIT(4) | BIT(3) | BIT(2),
+ is_jpeg ? 0 : (BIT(4) | BIT(3) | BIT(2)));
+ if (ret)
+ return ret;
+
+ /*
+ * CLOCK ENABLE02:
+ * - [5]: Enable JPEG 2x clock
+ * - [3]: Enable JPEG clock
+ */
+ return ov5640_mod_reg(sensor, OV5640_REG_SYS_CLOCK_ENABLE02,
+ BIT(5) | BIT(3),
+ is_jpeg ? (BIT(5) | BIT(3)) : 0);
+}
+
+/*
+ * Sensor Controls.
+ */
+
+static int ov5640_set_ctrl_hue(struct ov5640_dev *sensor, int value)
+{
+ int ret;
+
+ if (value) {
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
+ BIT(0), BIT(0));
+ if (ret)
+ return ret;
+ ret = ov5640_write_reg16(sensor, OV5640_REG_SDE_CTRL1, value);
+ } else {
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(0), 0);
+ }
+
+ return ret;
+}
+
+static int ov5640_set_ctrl_contrast(struct ov5640_dev *sensor, int value)
+{
+ int ret;
+
+ if (value) {
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
+ BIT(2), BIT(2));
+ if (ret)
+ return ret;
+ ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL5,
+ value & 0xff);
+ } else {
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(2), 0);
+ }
+
+ return ret;
+}
+
+static int ov5640_set_ctrl_saturation(struct ov5640_dev *sensor, int value)
+{
+ int ret;
+
+ if (value) {
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
+ BIT(1), BIT(1));
+ if (ret)
+ return ret;
+ ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL3,
+ value & 0xff);
+ if (ret)
+ return ret;
+ ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL4,
+ value & 0xff);
+ } else {
+ ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(1), 0);
+ }
+
+ return ret;
+}
+
+static int ov5640_set_ctrl_white_balance(struct ov5640_dev *sensor, int awb)
+{
+ int ret;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_AWB_MANUAL_CTRL,
+ BIT(0), awb ? 0 : 1);
+ if (ret)
+ return ret;
+
+ if (!awb) {
+ u16 red = (u16)sensor->ctrls.red_balance->val;
+ u16 blue = (u16)sensor->ctrls.blue_balance->val;
+
+ ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_R_GAIN, red);
+ if (ret)
+ return ret;
+ ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_B_GAIN, blue);
+ }
+
+ return ret;
+}
+
+static int ov5640_set_ctrl_exposure(struct ov5640_dev *sensor,
+ enum v4l2_exposure_auto_type auto_exposure)
+{
+ struct ov5640_ctrls *ctrls = &sensor->ctrls;
+ bool auto_exp = (auto_exposure == V4L2_EXPOSURE_AUTO);
+ int ret = 0;
+
+ if (ctrls->auto_exp->is_new) {
+ ret = ov5640_set_autoexposure(sensor, auto_exp);
+ if (ret)
+ return ret;
+ }
+
+ if (!auto_exp && ctrls->exposure->is_new) {
+ u16 max_exp;
+
+ ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_VTS,
+ &max_exp);
+ if (ret)
+ return ret;
+ ret = ov5640_get_vts(sensor);
+ if (ret < 0)
+ return ret;
+ max_exp += ret;
+ ret = 0;
+
+ if (ctrls->exposure->val < max_exp)
+ ret = ov5640_set_exposure(sensor, ctrls->exposure->val);
+ }
+
+ return ret;
+}
+
+static int ov5640_set_ctrl_gain(struct ov5640_dev *sensor, bool auto_gain)
+{
+ struct ov5640_ctrls *ctrls = &sensor->ctrls;
+ int ret = 0;
+
+ if (ctrls->auto_gain->is_new) {
+ ret = ov5640_set_autogain(sensor, auto_gain);
+ if (ret)
+ return ret;
+ }
+
+ if (!auto_gain && ctrls->gain->is_new)
+ ret = ov5640_set_gain(sensor, ctrls->gain->val);
+
+ return ret;
+}
+
+static const char * const test_pattern_menu[] = {
+ "Disabled",
+ "Color bars",
+ "Color bars w/ rolling bar",
+ "Color squares",
+ "Color squares w/ rolling bar",
+};
+
+#define OV5640_TEST_ENABLE BIT(7)
+#define OV5640_TEST_ROLLING BIT(6) /* rolling horizontal bar */
+#define OV5640_TEST_TRANSPARENT BIT(5)
+#define OV5640_TEST_SQUARE_BW BIT(4) /* black & white squares */
+#define OV5640_TEST_BAR_STANDARD (0 << 2)
+#define OV5640_TEST_BAR_VERT_CHANGE_1 (1 << 2)
+#define OV5640_TEST_BAR_HOR_CHANGE (2 << 2)
+#define OV5640_TEST_BAR_VERT_CHANGE_2 (3 << 2)
+#define OV5640_TEST_BAR (0 << 0)
+#define OV5640_TEST_RANDOM (1 << 0)
+#define OV5640_TEST_SQUARE (2 << 0)
+#define OV5640_TEST_BLACK (3 << 0)
+
+static const u8 test_pattern_val[] = {
+ 0,
+ OV5640_TEST_ENABLE | OV5640_TEST_BAR_VERT_CHANGE_1 |
+ OV5640_TEST_BAR,
+ OV5640_TEST_ENABLE | OV5640_TEST_ROLLING |
+ OV5640_TEST_BAR_VERT_CHANGE_1 | OV5640_TEST_BAR,
+ OV5640_TEST_ENABLE | OV5640_TEST_SQUARE,
+ OV5640_TEST_ENABLE | OV5640_TEST_ROLLING | OV5640_TEST_SQUARE,
+};
+
+static int ov5640_set_ctrl_test_pattern(struct ov5640_dev *sensor, int value)
+{
+ return ov5640_write_reg(sensor, OV5640_REG_PRE_ISP_TEST_SET1,
+ test_pattern_val[value]);
+}
+
+static int ov5640_set_ctrl_light_freq(struct ov5640_dev *sensor, int value)
+{
+ int ret;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL01, BIT(7),
+ (value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) ?
+ 0 : BIT(7));
+ if (ret)
+ return ret;
+
+ return ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL00, BIT(2),
+ (value == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) ?
+ BIT(2) : 0);
+}
+
+static int ov5640_set_ctrl_hflip(struct ov5640_dev *sensor, int value)
+{
+ /*
+ * If sensor is mounted upside down, mirror logic is inversed.
+ *
+ * Sensor is a BSI (Back Side Illuminated) one,
+ * so image captured is physically mirrored.
+ * This is why mirror logic is inversed in
+ * order to cancel this mirror effect.
+ */
+
+ /*
+ * TIMING TC REG21:
+ * - [2]: ISP mirror
+ * - [1]: Sensor mirror
+ */
+ return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
+ BIT(2) | BIT(1),
+ (!(value ^ sensor->upside_down)) ?
+ (BIT(2) | BIT(1)) : 0);
+}
+
+static int ov5640_set_ctrl_vflip(struct ov5640_dev *sensor, int value)
+{
+ /* If sensor is mounted upside down, flip logic is inversed */
+
+ /*
+ * TIMING TC REG20:
+ * - [2]: ISP vflip
+ * - [1]: Sensor vflip
+ */
+ return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
+ BIT(2) | BIT(1),
+ (value ^ sensor->upside_down) ?
+ (BIT(2) | BIT(1)) : 0);
+}
+
+static int ov5640_set_ctrl_vblank(struct ov5640_dev *sensor, int value)
+{
+ const struct ov5640_mode_info *mode = sensor->current_mode;
+
+ /* Update the VTOT timing register value. */
+ return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS,
+ mode->height + value);
+}
+
+static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ int val;
+
+ /* v4l2_ctrl_lock() locks our own mutex */
+
+ if (!pm_runtime_get_if_in_use(&sensor->i2c_client->dev))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUTOGAIN:
+ val = ov5640_get_gain(sensor);
+ if (val < 0)
+ return val;
+ sensor->ctrls.gain->val = val;
+ break;
+ case V4L2_CID_EXPOSURE_AUTO:
+ val = ov5640_get_exposure(sensor);
+ if (val < 0)
+ return val;
+ sensor->ctrls.exposure->val = val;
+ break;
+ }
+
+ pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
+ pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
+
+ return 0;
+}
+
+static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ const struct ov5640_mode_info *mode = sensor->current_mode;
+ const struct ov5640_timings *timings;
+ unsigned int exp_max;
+ int ret;
+
+ /* v4l2_ctrl_lock() locks our own mutex */
+
+ switch (ctrl->id) {
+ case V4L2_CID_VBLANK:
+ /* Update the exposure range to the newly programmed vblank. */
+ timings = ov5640_timings(sensor, mode);
+ exp_max = mode->height + ctrl->val - 4;
+ __v4l2_ctrl_modify_range(sensor->ctrls.exposure,
+ sensor->ctrls.exposure->minimum,
+ exp_max, sensor->ctrls.exposure->step,
+ timings->vblank_def);
+ break;
+ }
+
+ /*
+ * If the device is not powered up by the host driver do
+ * not apply any controls to H/W at this time. Instead
+ * the controls will be restored at start streaming time.
+ */
+ if (!pm_runtime_get_if_in_use(&sensor->i2c_client->dev))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUTOGAIN:
+ ret = ov5640_set_ctrl_gain(sensor, ctrl->val);
+ break;
+ case V4L2_CID_EXPOSURE_AUTO:
+ ret = ov5640_set_ctrl_exposure(sensor, ctrl->val);
+ break;
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ ret = ov5640_set_ctrl_white_balance(sensor, ctrl->val);
+ break;
+ case V4L2_CID_HUE:
+ ret = ov5640_set_ctrl_hue(sensor, ctrl->val);
+ break;
+ case V4L2_CID_CONTRAST:
+ ret = ov5640_set_ctrl_contrast(sensor, ctrl->val);
+ break;
+ case V4L2_CID_SATURATION:
+ ret = ov5640_set_ctrl_saturation(sensor, ctrl->val);
+ break;
+ case V4L2_CID_TEST_PATTERN:
+ ret = ov5640_set_ctrl_test_pattern(sensor, ctrl->val);
+ break;
+ case V4L2_CID_POWER_LINE_FREQUENCY:
+ ret = ov5640_set_ctrl_light_freq(sensor, ctrl->val);
+ break;
+ case V4L2_CID_HFLIP:
+ ret = ov5640_set_ctrl_hflip(sensor, ctrl->val);
+ break;
+ case V4L2_CID_VFLIP:
+ ret = ov5640_set_ctrl_vflip(sensor, ctrl->val);
+ break;
+ case V4L2_CID_VBLANK:
+ ret = ov5640_set_ctrl_vblank(sensor, ctrl->val);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
+ pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops ov5640_ctrl_ops = {
+ .g_volatile_ctrl = ov5640_g_volatile_ctrl,
+ .s_ctrl = ov5640_s_ctrl,
+};
+
+static int ov5640_init_controls(struct ov5640_dev *sensor)
+{
+ const struct ov5640_mode_info *mode = sensor->current_mode;
+ const struct v4l2_ctrl_ops *ops = &ov5640_ctrl_ops;
+ struct ov5640_ctrls *ctrls = &sensor->ctrls;
+ struct v4l2_ctrl_handler *hdl = &ctrls->handler;
+ struct v4l2_fwnode_device_properties props;
+ const struct ov5640_timings *timings;
+ unsigned int max_vblank;
+ unsigned int hblank;
+ int ret;
+
+ v4l2_ctrl_handler_init(hdl, 32);
+
+ /* we can use our own mutex for the ctrl lock */
+ hdl->lock = &sensor->lock;
+
+ /* Clock related controls */
+ ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_PIXEL_RATE,
+ ov5640_pixel_rates[OV5640_NUM_PIXEL_RATES - 1],
+ ov5640_pixel_rates[0], 1,
+ ov5640_pixel_rates[mode->pixel_rate]);
+
+ ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, ops,
+ V4L2_CID_LINK_FREQ,
+ ARRAY_SIZE(ov5640_csi2_link_freqs) - 1,
+ OV5640_DEFAULT_LINK_FREQ,
+ ov5640_csi2_link_freqs);
+
+ timings = ov5640_timings(sensor, mode);
+ hblank = timings->htot - mode->width;
+ ctrls->hblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK, hblank,
+ hblank, 1, hblank);
+
+ max_vblank = OV5640_MAX_VTS - mode->height;
+ ctrls->vblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK,
+ OV5640_MIN_VBLANK, max_vblank,
+ 1, timings->vblank_def);
+
+ /* Auto/manual white balance */
+ ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops,
+ V4L2_CID_AUTO_WHITE_BALANCE,
+ 0, 1, 1, 1);
+ ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE,
+ 0, 4095, 1, 0);
+ ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE,
+ 0, 4095, 1, 0);
+ /* Auto/manual exposure */
+ ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
+ V4L2_CID_EXPOSURE_AUTO,
+ V4L2_EXPOSURE_MANUAL, 0,
+ V4L2_EXPOSURE_AUTO);
+ ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
+ 0, 65535, 1, 0);
+ /* Auto/manual gain */
+ ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN,
+ 0, 1, 1, 1);
+ ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN,
+ 0, 1023, 1, 0);
+
+ ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION,
+ 0, 255, 1, 64);
+ ctrls->hue = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HUE,
+ 0, 359, 1, 0);
+ ctrls->contrast = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST,
+ 0, 255, 1, 0);
+ ctrls->test_pattern =
+ v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
+ ARRAY_SIZE(test_pattern_menu) - 1,
+ 0, 0, test_pattern_menu);
+ ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
+ 0, 1, 1, 0);
+ ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
+ 0, 1, 1, 0);
+
+ ctrls->light_freq =
+ v4l2_ctrl_new_std_menu(hdl, ops,
+ V4L2_CID_POWER_LINE_FREQUENCY,
+ V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
+ V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
+
+ if (hdl->error) {
+ ret = hdl->error;
+ goto free_ctrls;
+ }
+
+ ret = v4l2_fwnode_device_parse(&sensor->i2c_client->dev, &props);
+ if (ret)
+ goto free_ctrls;
+
+ if (props.rotation == 180)
+ sensor->upside_down = true;
+
+ ret = v4l2_ctrl_new_fwnode_properties(hdl, ops, &props);
+ if (ret)
+ goto free_ctrls;
+
+ ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ ctrls->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
+ ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
+
+ v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false);
+ v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true);
+ v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true);
+
+ sensor->sd.ctrl_handler = hdl;
+ return 0;
+
+free_ctrls:
+ v4l2_ctrl_handler_free(hdl);
+ return ret;
+}
+
+static int ov5640_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ u32 bpp = ov5640_code_to_bpp(sensor, fse->code);
+ unsigned int index = fse->index;
+
+ if (fse->pad != 0)
+ return -EINVAL;
+ if (!bpp)
+ return -EINVAL;
+
+ /* Only low-resolution modes are supported for 24bpp formats. */
+ if (bpp == 24 && index >= OV5640_MODE_720P_1280_720)
+ return -EINVAL;
+
+ /* FIXME: Low resolution modes don't work in 8bpp formats. */
+ if (bpp == 8)
+ index += OV5640_MODE_720P_1280_720;
+
+ if (index >= OV5640_NUM_MODES)
+ return -EINVAL;
+
+ fse->min_width = ov5640_mode_data[index].width;
+ fse->max_width = fse->min_width;
+ fse->min_height = ov5640_mode_data[index].height;
+ fse->max_height = fse->min_height;
+
+ return 0;
+}
+
+static int ov5640_enum_frame_interval(
+ struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_frame_interval_enum *fie)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ const struct ov5640_mode_info *mode;
+ struct v4l2_fract tpf;
+ int ret;
+
+ if (fie->pad != 0)
+ return -EINVAL;
+ if (fie->index >= OV5640_NUM_FRAMERATES)
+ return -EINVAL;
+
+ mode = ov5640_find_mode(sensor, fie->width, fie->height, false);
+ if (!mode)
+ return -EINVAL;
+
+ tpf.numerator = 1;
+ tpf.denominator = ov5640_framerates[fie->index];
+
+ ret = ov5640_try_frame_interval(sensor, &tpf, mode);
+ if (ret < 0)
+ return -EINVAL;
+
+ fie->interval = tpf;
+ return 0;
+}
+
+static int ov5640_g_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+
+ mutex_lock(&sensor->lock);
+ fi->interval = sensor->frame_interval;
+ mutex_unlock(&sensor->lock);
+
+ return 0;
+}
+
+static int ov5640_s_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ const struct ov5640_mode_info *mode;
+ int frame_rate, ret = 0;
+
+ if (fi->pad != 0)
+ return -EINVAL;
+
+ mutex_lock(&sensor->lock);
+
+ if (sensor->streaming) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ mode = sensor->current_mode;
+
+ frame_rate = ov5640_try_frame_interval(sensor, &fi->interval, mode);
+ if (frame_rate < 0) {
+ /* Always return a valid frame interval value */
+ fi->interval = sensor->frame_interval;
+ goto out;
+ }
+
+ mode = ov5640_find_mode(sensor, mode->width, mode->height, true);
+ if (!mode) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (ov5640_framerates[frame_rate] > ov5640_framerates[mode->max_fps]) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (mode != sensor->current_mode ||
+ frame_rate != sensor->current_fr) {
+ sensor->current_fr = frame_rate;
+ sensor->frame_interval = fi->interval;
+ sensor->current_mode = mode;
+ sensor->pending_mode_change = true;
+
+ ov5640_update_pixel_rate(sensor);
+ }
+out:
+ mutex_unlock(&sensor->lock);
+ return ret;
+}
+
+static int ov5640_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ const struct ov5640_pixfmt *formats;
+ unsigned int num_formats;
+
+ if (ov5640_is_csi2(sensor)) {
+ formats = ov5640_csi2_formats;
+ num_formats = ARRAY_SIZE(ov5640_csi2_formats) - 1;
+ } else {
+ formats = ov5640_dvp_formats;
+ num_formats = ARRAY_SIZE(ov5640_dvp_formats) - 1;
+ }
+
+ if (code->index >= num_formats)
+ return -EINVAL;
+
+ code->code = formats[code->index].code;
+
+ return 0;
+}
+
+static int ov5640_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ int ret = 0;
+
+ if (enable) {
+ ret = pm_runtime_resume_and_get(&sensor->i2c_client->dev);
+ if (ret < 0)
+ return ret;
+
+ ret = v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
+ if (ret) {
+ pm_runtime_put(&sensor->i2c_client->dev);
+ return ret;
+ }
+ }
+
+ mutex_lock(&sensor->lock);
+
+ if (sensor->streaming == !enable) {
+ if (enable && sensor->pending_mode_change) {
+ ret = ov5640_set_mode(sensor);
+ if (ret)
+ goto out;
+ }
+
+ if (enable && sensor->pending_fmt_change) {
+ ret = ov5640_set_framefmt(sensor, &sensor->fmt);
+ if (ret)
+ goto out;
+ sensor->pending_fmt_change = false;
+ }
+
+ if (ov5640_is_csi2(sensor))
+ ret = ov5640_set_stream_mipi(sensor, enable);
+ else
+ ret = ov5640_set_stream_dvp(sensor, enable);
+
+ if (!ret)
+ sensor->streaming = enable;
+ }
+
+out:
+ mutex_unlock(&sensor->lock);
+
+ if (!enable || ret) {
+ pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
+ pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
+ }
+
+ return ret;
+}
+
+static int ov5640_init_cfg(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state)
+{
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ struct v4l2_mbus_framefmt *fmt =
+ v4l2_subdev_get_try_format(sd, state, 0);
+ struct v4l2_rect *crop = v4l2_subdev_get_try_crop(sd, state, 0);
+
+ *fmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt :
+ ov5640_dvp_default_fmt;
+
+ crop->left = OV5640_PIXEL_ARRAY_LEFT;
+ crop->top = OV5640_PIXEL_ARRAY_TOP;
+ crop->width = OV5640_PIXEL_ARRAY_WIDTH;
+ crop->height = OV5640_PIXEL_ARRAY_HEIGHT;
+
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops ov5640_core_ops = {
+ .log_status = v4l2_ctrl_subdev_log_status,
+ .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+ .unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
+static const struct v4l2_subdev_video_ops ov5640_video_ops = {
+ .g_frame_interval = ov5640_g_frame_interval,
+ .s_frame_interval = ov5640_s_frame_interval,
+ .s_stream = ov5640_s_stream,
+};
+
+static const struct v4l2_subdev_pad_ops ov5640_pad_ops = {
+ .init_cfg = ov5640_init_cfg,
+ .enum_mbus_code = ov5640_enum_mbus_code,
+ .get_fmt = ov5640_get_fmt,
+ .set_fmt = ov5640_set_fmt,
+ .get_selection = ov5640_get_selection,
+ .enum_frame_size = ov5640_enum_frame_size,
+ .enum_frame_interval = ov5640_enum_frame_interval,
+};
+
+static const struct v4l2_subdev_ops ov5640_subdev_ops = {
+ .core = &ov5640_core_ops,
+ .video = &ov5640_video_ops,
+ .pad = &ov5640_pad_ops,
+};
+
+static int ov5640_get_regulators(struct ov5640_dev *sensor)
+{
+ int i;
+
+ for (i = 0; i < OV5640_NUM_SUPPLIES; i++)
+ sensor->supplies[i].supply = ov5640_supply_name[i];
+
+ return devm_regulator_bulk_get(&sensor->i2c_client->dev,
+ OV5640_NUM_SUPPLIES,
+ sensor->supplies);
+}
+
+static int ov5640_check_chip_id(struct ov5640_dev *sensor)
+{
+ struct i2c_client *client = sensor->i2c_client;
+ int ret = 0;
+ u16 chip_id;
+
+ ret = ov5640_read_reg16(sensor, OV5640_REG_CHIP_ID, &chip_id);
+ if (ret) {
+ dev_err(&client->dev, "%s: failed to read chip identifier\n",
+ __func__);
+ return ret;
+ }
+
+ if (chip_id != 0x5640) {
+ dev_err(&client->dev, "%s: wrong chip identifier, expected 0x5640, got 0x%x\n",
+ __func__, chip_id);
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static int ov5640_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct fwnode_handle *endpoint;
+ struct ov5640_dev *sensor;
+ int ret;
+
+ sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
+ if (!sensor)
+ return -ENOMEM;
+
+ sensor->i2c_client = client;
+
+ /*
+ * default init sequence initialize sensor to
+ * YUV422 UYVY VGA(30FPS in parallel mode, 60 in MIPI CSI-2 mode)
+ */
+ sensor->frame_interval.numerator = 1;
+ sensor->frame_interval.denominator = ov5640_framerates[OV5640_30_FPS];
+ sensor->current_fr = OV5640_30_FPS;
+ sensor->current_mode =
+ &ov5640_mode_data[OV5640_MODE_VGA_640_480];
+ sensor->last_mode = sensor->current_mode;
+ sensor->current_link_freq =
+ ov5640_csi2_link_freqs[OV5640_DEFAULT_LINK_FREQ];
+
+ sensor->ae_target = 52;
+
+ endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev),
+ NULL);
+ if (!endpoint) {
+ dev_err(dev, "endpoint node not found\n");
+ return -EINVAL;
+ }
+
+ ret = v4l2_fwnode_endpoint_parse(endpoint, &sensor->ep);
+ fwnode_handle_put(endpoint);
+ if (ret) {
+ dev_err(dev, "Could not parse endpoint\n");
+ return ret;
+ }
+
+ if (sensor->ep.bus_type != V4L2_MBUS_PARALLEL &&
+ sensor->ep.bus_type != V4L2_MBUS_CSI2_DPHY &&
+ sensor->ep.bus_type != V4L2_MBUS_BT656) {
+ dev_err(dev, "Unsupported bus type %d\n", sensor->ep.bus_type);
+ return -EINVAL;
+ }
+
+ sensor->fmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt :
+ ov5640_dvp_default_fmt;
+
+ /* get system clock (xclk) */
+ sensor->xclk = devm_clk_get(dev, "xclk");
+ if (IS_ERR(sensor->xclk)) {
+ dev_err(dev, "failed to get xclk\n");
+ return PTR_ERR(sensor->xclk);
+ }
+
+ sensor->xclk_freq = clk_get_rate(sensor->xclk);
+ if (sensor->xclk_freq < OV5640_XCLK_MIN ||
+ sensor->xclk_freq > OV5640_XCLK_MAX) {
+ dev_err(dev, "xclk frequency out of range: %d Hz\n",
+ sensor->xclk_freq);
+ return -EINVAL;
+ }
+
+ /* request optional power down pin */
+ sensor->pwdn_gpio = devm_gpiod_get_optional(dev, "powerdown",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(sensor->pwdn_gpio))
+ return PTR_ERR(sensor->pwdn_gpio);
+
+ /* request optional reset pin */
+ sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(sensor->reset_gpio))
+ return PTR_ERR(sensor->reset_gpio);
+
+ v4l2_i2c_subdev_init(&sensor->sd, client, &ov5640_subdev_ops);
+
+ sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+ V4L2_SUBDEV_FL_HAS_EVENTS;
+ sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
+ sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
+ if (ret)
+ return ret;
+
+ ret = ov5640_get_regulators(sensor);
+ if (ret)
+ goto entity_cleanup;
+
+ mutex_init(&sensor->lock);
+
+ ret = ov5640_init_controls(sensor);
+ if (ret)
+ goto entity_cleanup;
+
+ ret = ov5640_sensor_resume(dev);
+ if (ret) {
+ dev_err(dev, "failed to power on\n");
+ goto free_ctrls;
+ }
+
+ pm_runtime_set_active(dev);
+ pm_runtime_get_noresume(dev);
+ pm_runtime_enable(dev);
+
+ ret = ov5640_check_chip_id(sensor);
+ if (ret)
+ goto err_pm_runtime;
+
+ ret = v4l2_async_register_subdev_sensor(&sensor->sd);
+ if (ret)
+ goto err_pm_runtime;
+
+ pm_runtime_set_autosuspend_delay(dev, 1000);
+ pm_runtime_use_autosuspend(dev);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
+
+ return 0;
+
+err_pm_runtime:
+ pm_runtime_put_noidle(dev);
+ pm_runtime_disable(dev);
+ ov5640_sensor_suspend(dev);
+free_ctrls:
+ v4l2_ctrl_handler_free(&sensor->ctrls.handler);
+entity_cleanup:
+ media_entity_cleanup(&sensor->sd.entity);
+ mutex_destroy(&sensor->lock);
+ return ret;
+}
+
+static void ov5640_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct ov5640_dev *sensor = to_ov5640_dev(sd);
+ struct device *dev = &client->dev;
+
+ pm_runtime_disable(dev);
+ if (!pm_runtime_status_suspended(dev))
+ ov5640_sensor_suspend(dev);
+ pm_runtime_set_suspended(dev);
+
+ v4l2_async_unregister_subdev(&sensor->sd);
+ media_entity_cleanup(&sensor->sd.entity);
+ v4l2_ctrl_handler_free(&sensor->ctrls.handler);
+ mutex_destroy(&sensor->lock);
+}
+
+static const struct dev_pm_ops ov5640_pm_ops = {
+ SET_RUNTIME_PM_OPS(ov5640_sensor_suspend, ov5640_sensor_resume, NULL)
+};
+
+static const struct i2c_device_id ov5640_id[] = {
+ {"ov5640", 0},
+ {},
+};
+MODULE_DEVICE_TABLE(i2c, ov5640_id);
+
+static const struct of_device_id ov5640_dt_ids[] = {
+ { .compatible = "ovti,ov5640" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, ov5640_dt_ids);
+
+static struct i2c_driver ov5640_i2c_driver = {
+ .driver = {
+ .name = "ov5640",
+ .of_match_table = ov5640_dt_ids,
+ .pm = &ov5640_pm_ops,
+ },
+ .id_table = ov5640_id,
+ .probe = ov5640_probe,
+ .remove = ov5640_remove,
+};
+
+module_i2c_driver(ov5640_i2c_driver);
+
+MODULE_DESCRIPTION("OV5640 MIPI Camera Subdev Driver");
+MODULE_LICENSE("GPL");