This adds a very limited driver for ov5640, which
only supports:
- 2592x1944 @ ~7.5 fps
- 1920x1080 @ ~15 fps,
- 1280x720 @ ~24 fps,
- 640x480 @ ~24 fps,
- 320x240 @ ~24 fps,
All in YUV422i format, using 1 CSI2 datalane @ 333 MHz.
Signed-off-by: Sergio Aguirre <saagui...@ti.com>
---
drivers/media/video/Kconfig | 6 +
drivers/media/video/Makefile | 1 +
drivers/media/video/ov5640.c | 948 ++++++++++++++++++++++++++++++++++++++++++
include/media/ov5640.h | 10 +
4 files changed, 965 insertions(+), 0 deletions(-)
create mode 100644 drivers/media/video/ov5640.c
create mode 100644 include/media/ov5640.h
diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index 4482ac4..cc76652 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -480,6 +480,12 @@ config VIDEO_OV7670
OV7670 VGA camera. It currently only works with the M88ALP01
controller.
+config VIDEO_OV5640
+ tristate "OmniVision OV5640 sensor support"
+ depends on I2C && VIDEO_V4L2
+ help
+ This is a ov5640 camera driver
+
config VIDEO_VS6624
tristate "ST VS6624 sensor support"
depends on VIDEO_V4L2 && I2C
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index c95cc0d..da40ab3 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -68,6 +68,7 @@ obj-$(CONFIG_VIDEO_CX25840) += cx25840/
obj-$(CONFIG_VIDEO_UPD64031A) += upd64031a.o
obj-$(CONFIG_VIDEO_UPD64083) += upd64083.o
obj-$(CONFIG_VIDEO_OV7670) += ov7670.o
+obj-$(CONFIG_VIDEO_OV5640) += ov5640.o
obj-$(CONFIG_VIDEO_TCM825X) += tcm825x.o
obj-$(CONFIG_VIDEO_TVEEPROM) += tveeprom.o
obj-$(CONFIG_VIDEO_MT9M032) += mt9m032.o
diff --git a/drivers/media/video/ov5640.c b/drivers/media/video/ov5640.c
new file mode 100644
index 0000000..2a64d50
--- /dev/null
+++ b/drivers/media/video/ov5640.c
@@ -0,0 +1,948 @@
+/*
+ * OmniVision OV5640 sensor driver
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/videodev2.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/log2.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+#include <media/v4l2-ctrls.h>
+
+#include <media/ov5640.h>
+
+/* OV5640 has only one fixed colorspace per pixelcode */
+struct ov5640_datafmt {
+ enum v4l2_mbus_pixelcode code;
+ enum v4l2_colorspace colorspace;
+};
+
+struct ov5640_timing_cfg {
+ u16 x_addr_start;
+ u16 y_addr_start;
+ u16 x_addr_end;
+ u16 y_addr_end;
+ u16 h_output_size;
+ u16 v_output_size;
+ u16 h_total_size;
+ u16 v_total_size;
+ u16 isp_h_offset;
+ u16 isp_v_offset;
+ u8 h_odd_ss_inc;
+ u8 h_even_ss_inc;
+ u8 v_odd_ss_inc;
+ u8 v_even_ss_inc;
+};
+
+enum ov5640_size {
+ OV5640_SIZE_QVGA,
+ OV5640_SIZE_VGA,
+ OV5640_SIZE_720P,
+ OV5640_SIZE_1080P,
+ OV5640_SIZE_5MP,
+ OV5640_SIZE_LAST,
+};
+
+static const struct v4l2_frmsize_discrete ov5640_frmsizes[OV5640_SIZE_LAST] = {
+ { 320, 240 },
+ { 640, 480 },
+ { 1280, 720 },
+ { 1920, 1080 },
+ { 2592, 1944 },
+};
+
+/* Find a frame size in an array */
+static int ov5640_find_framesize(u32 width, u32 height)
+{
+ int i;
+
+ for (i = 0; i < OV5640_SIZE_LAST; i++) {
+ if ((ov5640_frmsizes[i].width >= width) &&
+ (ov5640_frmsizes[i].height >= height))
+ break;
+ }
+
+ /* If not found, select biggest */
+ if (i >= OV5640_SIZE_LAST)
+ i = OV5640_SIZE_LAST - 1;
+
+ return i;
+}
+
+struct ov5640 {
+ struct v4l2_subdev subdev;
+ struct media_pad pad;
+ struct v4l2_mbus_framefmt format;
+
+ struct v4l2_ctrl_handler ctrl_handler;
+
+ const struct ov5640_platform_data *pdata;
+
+ struct v4l2_ctrl *pixel_rate;
+};
+
+static inline struct ov5640 *to_ov5640(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct ov5640, subdev);
+}
+
+/**
+ * struct ov5640_reg - ov5640 register format
+ * @reg: 16-bit offset to register
+ * @val: 8/16/32-bit register value
+ * @length: length of the register
+ *
+ * Define a structure for OV5640 register initialization values
+ */
+struct ov5640_reg {
+ u16 reg;
+ u8 val;
+};
+
+/* TODO: Divide this properly */
+static const struct ov5640_reg configscript_common1[] = {
+ { 0x3103, 0x03 },
+ { 0x3017, 0x00 },
+ { 0x3018, 0x00 },
+ { 0x3630, 0x2e },
+ { 0x3632, 0xe2 },
+ { 0x3633, 0x23 },
+ { 0x3634, 0x44 },
+ { 0x3621, 0xe0 },
+ { 0x3704, 0xa0 },
+ { 0x3703, 0x5a },
+ { 0x3715, 0x78 },
+ { 0x3717, 0x01 },
+ { 0x370b, 0x60 },
+ { 0x3705, 0x1a },
+ { 0x3905, 0x02 },
+ { 0x3906, 0x10 },
+ { 0x3901, 0x0a },
+ { 0x3731, 0x12 },
+ { 0x3600, 0x04 },
+ { 0x3601, 0x22 },
+ { 0x471c, 0x50 },
+ { 0x3002, 0x1c },
+ { 0x3006, 0xc3 },
+ { 0x300e, 0x05 },
+ { 0x302e, 0x08 },
+ { 0x3612, 0x4b },
+ { 0x3618, 0x04 },
+ { 0x3034, 0x18 },
+ { 0x3035, 0x11 },
+ { 0x3036, 0x54 },
+ { 0x3037, 0x13 },
+ { 0x3708, 0x21 },
+ { 0x3709, 0x12 },
+ { 0x370c, 0x00 },
+};
+
+/* TODO: Divide this properly */
+static const struct ov5640_reg configscript_common2[] = {
+ { 0x3a02, 0x01 },
+ { 0x3a03, 0xec },
+ { 0x3a08, 0x01 },
+ { 0x3a09, 0x27 },
+ { 0x3a0a, 0x00 },
+ { 0x3a0b, 0xf6 },
+ { 0x3a0e, 0x06 },
+ { 0x3a0d, 0x08 },
+ { 0x3a14, 0x01 },
+ { 0x3a15, 0xec },
+ { 0x4001, 0x02 },
+ { 0x4004, 0x06 },
+ { 0x460b, 0x37 },
+ { 0x4750, 0x00 },
+ { 0x4751, 0x00 },
+ { 0x4800, 0x24 },
+ { 0x5a00, 0x08 },
+ { 0x5a21, 0x00 },
+ { 0x5a24, 0x00 },
+ { 0x5000, 0x27 },
+ { 0x5001, 0x87 },
+ { 0x3820, 0x40 },
+ { 0x3821, 0x06 },
+ { 0x3824, 0x01 },
+ { 0x5481, 0x08 },
+ { 0x5482, 0x14 },
+ { 0x5483, 0x28 },
+ { 0x5484, 0x51 },
+ { 0x5485, 0x65 },
+ { 0x5486, 0x71 },
+ { 0x5487, 0x7d },
+ { 0x5488, 0x87 },
+ { 0x5489, 0x91 },
+ { 0x548a, 0x9a },
+ { 0x548b, 0xaa },
+ { 0x548c, 0xb8 },
+ { 0x548d, 0xcd },
+ { 0x548e, 0xdd },
+ { 0x548f, 0xea },
+ { 0x5490, 0x1d },
+ { 0x5381, 0x20 },
+ { 0x5382, 0x64 },
+ { 0x5383, 0x08 },
+ { 0x5384, 0x20 },
+ { 0x5385, 0x80 },
+ { 0x5386, 0xa0 },
+ { 0x5387, 0xa2 },
+ { 0x5388, 0xa0 },
+ { 0x5389, 0x02 },
+ { 0x538a, 0x01 },
+ { 0x538b, 0x98 },
+ { 0x5300, 0x08 },
+ { 0x5301, 0x30 },
+ { 0x5302, 0x10 },
+ { 0x5303, 0x00 },
+ { 0x5304, 0x08 },
+ { 0x5305, 0x30 },
+ { 0x5306, 0x08 },
+ { 0x5307, 0x16 },
+ { 0x5580, 0x00 },
+ { 0x5587, 0x00 },
+ { 0x5588, 0x00 },
+ { 0x5583, 0x40 },
+ { 0x5584, 0x10 },
+ { 0x5589, 0x10 },
+ { 0x558a, 0x00 },
+ { 0x558b, 0xf8 },
+ { 0x3a0f, 0x36 },
+ { 0x3a10, 0x2e },
+ { 0x3a1b, 0x38 },
+ { 0x3a1e, 0x2c },
+ { 0x3a11, 0x70 },
+ { 0x3a1f, 0x18 },
+ { 0x3a18, 0x00 },
+ { 0x3a19, 0xf8 },
+ { 0x3003, 0x03 },
+ { 0x3003, 0x01 },
+};
+
+static const struct ov5640_timing_cfg timing_cfg[OV5640_SIZE_LAST] = {
+ [OV5640_SIZE_QVGA] = {
+ .x_addr_start = 0,
+ .y_addr_start = 0,
+ .x_addr_end = 2623,
+ .y_addr_end = 1951,
+ .h_output_size = 320,
+ .v_output_size = 240,
+ .h_total_size = 2844,
+ .v_total_size = 1968,
+ .isp_h_offset = 16,
+ .isp_v_offset = 6,
+ .h_odd_ss_inc = 1,
+ .h_even_ss_inc = 1,
+ .v_odd_ss_inc = 1,
+ .v_even_ss_inc = 1,
+ },
+ [OV5640_SIZE_VGA] = {
+ .x_addr_start = 0,
+ .y_addr_start = 0,
+ .x_addr_end = 2623,
+ .y_addr_end = 1951,
+ .h_output_size = 640,
+ .v_output_size = 480,
+ .h_total_size = 2844,
+ .v_total_size = 1968,
+ .isp_h_offset = 16,
+ .isp_v_offset = 6,
+ .h_odd_ss_inc = 1,
+ .h_even_ss_inc = 1,
+ .v_odd_ss_inc = 1,
+ .v_even_ss_inc = 1,
+ },
+ [OV5640_SIZE_720P] = {
+ .x_addr_start = 336,
+ .y_addr_start = 434,
+ .x_addr_end = 2287,
+ .y_addr_end = 1522,
+ .h_output_size = 1280,
+ .v_output_size = 720,
+ .h_total_size = 2500,
+ .v_total_size = 1120,
+ .isp_h_offset = 16,
+ .isp_v_offset = 4,
+ .h_odd_ss_inc = 1,
+ .h_even_ss_inc = 1,
+ .v_odd_ss_inc = 1,
+ .v_even_ss_inc = 1,
+ },
+ [OV5640_SIZE_1080P] = {
+ .x_addr_start = 336,
+ .y_addr_start = 434,
+ .x_addr_end = 2287,
+ .y_addr_end = 1522,
+ .h_output_size = 1920,
+ .v_output_size = 1080,
+ .h_total_size = 2500,
+ .v_total_size = 1120,
+ .isp_h_offset = 16,
+ .isp_v_offset = 4,
+ .h_odd_ss_inc = 1,
+ .h_even_ss_inc = 1,
+ .v_odd_ss_inc = 1,
+ .v_even_ss_inc = 1,
+ },
+ [OV5640_SIZE_5MP] = {
+ .x_addr_start = 0,
+ .y_addr_start = 0,
+ .x_addr_end = 2623,
+ .y_addr_end = 1951,
+ .h_output_size = 2592,
+ .v_output_size = 1944,
+ .h_total_size = 2844,
+ .v_total_size = 1968,
+ .isp_h_offset = 16,
+ .isp_v_offset = 6,
+ .h_odd_ss_inc = 1,
+ .h_even_ss_inc = 1,
+ .v_odd_ss_inc = 1,
+ .v_even_ss_inc = 1,
+ },
+};
+
+/**
+ * ov5640_reg_read - Read a value from a register in an ov5640 sensor device
+ * @client: i2c driver client structure
+ * @reg: register address / offset
+ * @val: stores the value that gets read
+ *
+ * Read a value from a register in an ov5640 sensor device.
+ * The value is returned in 'val'.
+ * Returns zero if successful, or non-zero otherwise.
+ */
+static int ov5640_reg_read(struct i2c_client *client, u16 reg, u8 *val)
+{
+ int ret;
+ u8 data[2] = {0};
+ struct i2c_msg msg = {
+ .addr = client->addr,
+ .flags = 0,
+ .len = 2,
+ .buf = data,
+ };
+
+ data[0] = (u8)(reg >> 8);
+ data[1] = (u8)(reg & 0xff);
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret < 0)
+ goto err;
+
+ msg.flags = I2C_M_RD;
+ msg.len = 1;
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret < 0)
+ goto err;
+
+ *val = data[0];
+ return 0;
+
+err:
+ dev_err(&client->dev, "Failed reading register 0x%02x!\n", reg);
+ return ret;
+}
+
+/**
+ * Write a value to a register in ov5640 sensor device.
+ * @client: i2c driver client structure.
+ * @reg: Address of the register to read value from.
+ * @val: Value to be written to a specific register.
+ * Returns zero if successful, or non-zero otherwise.
+ */
+static int ov5640_reg_write(struct i2c_client *client, u16 reg, u8 val)
+{
+ int ret;
+ unsigned char data[3] = { (u8)(reg >> 8), (u8)(reg & 0xff), val };
+ struct i2c_msg msg = {
+ .addr = client->addr,
+ .flags = 0,
+ .len = 3,
+ .buf = data,
+ };
+
+ ret = i2c_transfer(client->adapter, &msg, 1);
+ if (ret < 0) {
+ dev_err(&client->dev, "Failed writing register 0x%02x!\n", reg);
+ return ret;
+ }
+
+ return 0;
+}
+
+/**
+ * Initialize a list of ov5640 registers.
+ * The list of registers is terminated by the pair of values
+ * @client: i2c driver client structure.
+ * @reglist[]: List of address of the registers to write data.
+ * Returns zero if successful, or non-zero otherwise.
+ */
+static int ov5640_reg_writes(struct i2c_client *client,
+ const struct ov5640_reg reglist[],
+ int size)
+{
+ int err = 0, i;
+
+ for (i = 0; i < size; i++) {
+ err = ov5640_reg_write(client, reglist[i].reg,
+ reglist[i].val);
+ if (err)
+ return err;
+ }
+ return 0;
+}
+
+static int ov5640_reg_set(struct i2c_client *client, u16 reg, u8 val)
+{
+ int ret;
+ u8 tmpval = 0;
+
+ ret = ov5640_reg_read(client, reg, &tmpval);
+ if (ret)
+ return ret;
+
+ return ov5640_reg_write(client, reg, tmpval | val);
+}
+
+static int ov5640_reg_clr(struct i2c_client *client, u16 reg, u8 val)
+{
+ int ret;
+ u8 tmpval = 0;
+
+ ret = ov5640_reg_read(client, reg, &tmpval);
+ if (ret)
+ return ret;
+
+ return ov5640_reg_write(client, reg, tmpval & ~val);
+}
+
+static int ov5640_config_timing(struct v4l2_subdev *sd)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct ov5640 *ov5640 = to_ov5640(sd);
+ int ret, i;
+
+ i = ov5640_find_framesize(ov5640->format.width, ov5640->format.height);
+
+ ret = ov5640_reg_write(client,
+ 0x3800,
+ (timing_cfg[i].x_addr_start & 0xFF00) >> 8);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3801,
+ timing_cfg[i].x_addr_start & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3802,
+ (timing_cfg[i].y_addr_start & 0xFF00) >> 8);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3803,
+ timing_cfg[i].y_addr_start & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3804,
+ (timing_cfg[i].x_addr_end & 0xFF00) >> 8);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3805,
+ timing_cfg[i].x_addr_end & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3806,
+ (timing_cfg[i].y_addr_end & 0xFF00) >> 8);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3807,
+ timing_cfg[i].y_addr_end & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3808,
+ (timing_cfg[i].h_output_size & 0xFF00) >> 8);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3809,
+ timing_cfg[i].h_output_size & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x380A,
+ (timing_cfg[i].v_output_size & 0xFF00) >> 8);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x380B,
+ timing_cfg[i].v_output_size & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x380C,
+ (timing_cfg[i].h_total_size & 0xFF00) >> 8);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x380D,
+ timing_cfg[i].h_total_size & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x380E,
+ (timing_cfg[i].v_total_size & 0xFF00) >> 8);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x380F,
+ timing_cfg[i].v_total_size & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3810,
+ (timing_cfg[i].isp_h_offset & 0xFF00) >> 8);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3811,
+ timing_cfg[i].isp_h_offset & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3812,
+ (timing_cfg[i].isp_v_offset & 0xFF00) >> 8);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3813,
+ timing_cfg[i].isp_v_offset & 0xFF);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3814,
+ ((timing_cfg[i].h_odd_ss_inc & 0xF) << 4) |
+ (timing_cfg[i].h_even_ss_inc & 0xF));
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client,
+ 0x3815,
+ ((timing_cfg[i].v_odd_ss_inc & 0xF) << 4) |
+ (timing_cfg[i].v_even_ss_inc & 0xF));
+
+ return ret;
+}
+
+static struct v4l2_mbus_framefmt *
+__ov5640_get_pad_format(struct ov5640 *ov5640, struct v4l2_subdev_fh *fh,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ switch (which) {
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_format(fh, pad);
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &ov5640->format;
+ default:
+ return NULL;
+ }
+}
+
+/*
-----------------------------------------------------------------------------
+ * V4L2 subdev internal operations
+ */
+
+static int ov5640_s_power(struct v4l2_subdev *sd, int on)
+{
+ struct ov5640 *ov5640 = to_ov5640(sd);
+
+ return ov5640->pdata->s_power(sd, on);
+}
+
+static struct v4l2_subdev_core_ops ov5640_subdev_core_ops = {
+ .s_power = ov5640_s_power,
+};
+
+static int ov5640_g_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *format)
+{
+ struct ov5640 *ov5640 = to_ov5640(sd);
+
+ format->format = *__ov5640_get_pad_format(ov5640, fh, format->pad,
+ format->which);
+
+ return 0;
+}
+
+static int ov5640_s_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *format)
+{
+ struct ov5640 *ov5640 = to_ov5640(sd);
+ struct v4l2_mbus_framefmt *__format;
+
+ __format = __ov5640_get_pad_format(ov5640, fh, format->pad,
+ format->which);
+
+ *__format = format->format;
+
+ /* NOTE: This is always true for now, revisit later. */
+ ov5640->pixel_rate->cur.val64 = 42000000;
+
+ return 0;
+}
+
+static int ov5640_enum_fmt(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->index >= 2)
+ return -EINVAL;
+
+ switch (code->index) {
+ case 0:
+ code->code = V4L2_MBUS_FMT_UYVY8_1X16;
+ break;
+ case 1:
+ code->code = V4L2_MBUS_FMT_YUYV8_1X16;
+ break;
+ }
+ return 0;
+}
+
+static int ov5640_enum_framesizes(struct v4l2_subdev *subdev,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ if ((fse->index >= OV5640_SIZE_LAST) ||
+ (fse->code != V4L2_MBUS_FMT_UYVY8_1X16 &&
+ fse->code != V4L2_MBUS_FMT_YUYV8_1X16))
+ return -EINVAL;
+
+ fse->min_width = ov5640_frmsizes[fse->index].width;
+ fse->max_width = fse->min_width;
+ fse->min_height = ov5640_frmsizes[fse->index].height;
+ fse->max_height = fse->min_height;
+
+ return 0;
+}
+
+static int ov5640_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct ov5640 *ov5640 = to_ov5640(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ int ret = 0;
+
+ if (enable) {
+ u8 fmtreg = 0, fmtmuxreg = 0;
+ int i;
+
+ switch ((u32)ov5640->format.code) {
+ case V4L2_MBUS_FMT_UYVY8_1X16:
+ fmtreg = 0x32;
+ fmtmuxreg = 0;
+ break;
+ case V4L2_MBUS_FMT_YUYV8_1X16:
+ fmtreg = 0x30;
+ fmtmuxreg = 0;
+ break;
+ default:
+ /* This shouldn't happen */
+ ret = -EINVAL;
+ return ret;
+ }
+
+ ret = ov5640_reg_write(client, 0x4300, fmtreg);
+ if (ret)
+ return ret;
+
+ ret = ov5640_reg_write(client, 0x501F, fmtmuxreg);
+ if (ret)
+ return ret;
+
+ ret = ov5640_config_timing(sd);
+ if (ret)
+ return ret;
+
+ i = ov5640_find_framesize(ov5640->format.width,
ov5640->format.height);
+ if ((i == OV5640_SIZE_QVGA) ||
+ (i == OV5640_SIZE_VGA) ||
+ (i == OV5640_SIZE_720P)) {
+ ret = ov5640_reg_write(client, 0x3108,
+ (i == OV5640_SIZE_720P) ? 0x1 : 0);
+ if (ret)
+ return ret;
+ ret = ov5640_reg_set(client, 0x5001, 0x20);
+ } else {
+ ret = ov5640_reg_clr(client, 0x5001, 0x20);
+ if (ret)
+ return ret;
+ ret = ov5640_reg_write(client, 0x3108, 0x2);
+ }
+
+ ret = ov5640_reg_clr(client, 0x3008, 0x40);
+ if (ret)
+ goto out;
+ } else {
+ u8 tmpreg = 0;
+
+ ret = ov5640_reg_read(client, 0x3008, &tmpreg);
+ if (ret)
+ goto out;
+
+ ret = ov5640_reg_write(client, 0x3008, tmpreg | 0x40);
+ if (ret)
+ goto out;
+ }
+
+out:
+ return ret;
+}
+
+static struct v4l2_subdev_video_ops ov5640_subdev_video_ops = {
+ .s_stream = ov5640_s_stream,
+};
+
+static struct v4l2_subdev_pad_ops ov5640_subdev_pad_ops = {
+ .enum_mbus_code = ov5640_enum_fmt,
+ .enum_frame_size = ov5640_enum_framesizes,
+ .get_fmt = ov5640_g_fmt,
+ .set_fmt = ov5640_s_fmt,
+};
+
+static int ov5640_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
+{
+ /* Quantity of initial bad frames to skip. Revisit. */
+ *frames = 3;
+
+ return 0;
+}
+
+static struct v4l2_subdev_sensor_ops ov5640_subdev_sensor_ops = {
+ .g_skip_frames = ov5640_g_skip_frames,
+};
+
+static struct v4l2_subdev_ops ov5640_subdev_ops = {
+ .core = &ov5640_subdev_core_ops,
+ .video = &ov5640_subdev_video_ops,
+ .pad = &ov5640_subdev_pad_ops,
+ .sensor = &ov5640_subdev_sensor_ops,
+};
+
+static int ov5640_registered(struct v4l2_subdev *subdev)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(subdev);
+ struct ov5640 *ov5640 = to_ov5640(subdev);
+ int ret = 0;
+ u8 revision = 0;
+
+ ret = ov5640_s_power(subdev, 1);
+ if (ret < 0) {
+ dev_err(&client->dev, "OV5640 power up failed\n");
+ return ret;
+ }
+
+ ret = ov5640_reg_read(client, 0x302A, &revision);
+ if (ret) {
+ dev_err(&client->dev, "Failure to detect OV5640 chip\n");
+ goto out;
+ }
+
+ revision &= 0xF;
+
+ dev_info(&client->dev, "Detected a OV5640 chip, revision %x\n",
+ revision);
+
+ /* SW Reset */
+ ret = ov5640_reg_set(client, 0x3008, 0x80);
+ if (ret)
+ goto out;
+
+ msleep(2);
+
+ ret = ov5640_reg_clr(client, 0x3008, 0x80);
+ if (ret)
+ goto out;
+
+ /* SW Powerdown */
+ ret = ov5640_reg_set(client, 0x3008, 0x40);
+ if (ret)
+ goto out;
+
+ ret = ov5640_reg_writes(client, configscript_common1,
+ ARRAY_SIZE(configscript_common1));
+ if (ret)
+ goto out;
+
+ ret = ov5640_reg_writes(client, configscript_common2,
+ ARRAY_SIZE(configscript_common2));
+ if (ret)
+ goto out;
+
+ /* Init controls */
+ ret = v4l2_ctrl_handler_init(&ov5640->ctrl_handler, 1);
+ if (ret)
+ goto out;
+
+ ov5640->pixel_rate = v4l2_ctrl_new_std(
+ &ov5640->ctrl_handler, NULL,
+ V4L2_CID_PIXEL_RATE,
+ 0, 0, 1, 0);
+
+ subdev->ctrl_handler = &ov5640->ctrl_handler;
+out:
+ ov5640_s_power(subdev, 0);
+
+ return ret;
+}
+
+static int ov5640_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
+{
+ struct v4l2_mbus_framefmt *format;
+
+ format = v4l2_subdev_get_try_format(fh, 0);
+ format->code = V4L2_MBUS_FMT_UYVY8_1X16;
+ format->width = ov5640_frmsizes[OV5640_SIZE_VGA].width;
+ format->height = ov5640_frmsizes[OV5640_SIZE_VGA].height;
+ format->field = V4L2_FIELD_NONE;
+ format->colorspace = V4L2_COLORSPACE_JPEG;
+
+ return 0;
+}
+
+static int ov5640_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh)
+{
+ return 0;
+}
+
+static struct v4l2_subdev_internal_ops ov5640_subdev_internal_ops = {
+ .registered = ov5640_registered,
+ .open = ov5640_open,
+ .close = ov5640_close,
+};
+
+static int ov5640_probe(struct i2c_client *client,
+ const struct i2c_device_id *did)
+{
+ struct ov5640 *ov5640;
+ int ret;
+
+ if (!client->dev.platform_data) {
+ dev_err(&client->dev, "No platform data!!\n");
+ return -ENODEV;
+ }
+
+ ov5640 = kzalloc(sizeof(*ov5640), GFP_KERNEL);
+ if (!ov5640)
+ return -ENOMEM;
+
+ ov5640->pdata = client->dev.platform_data;
+
+ ov5640->format.code = V4L2_MBUS_FMT_UYVY8_1X16;
+ ov5640->format.width = ov5640_frmsizes[OV5640_SIZE_VGA].width;
+ ov5640->format.height = ov5640_frmsizes[OV5640_SIZE_VGA].height;
+ ov5640->format.field = V4L2_FIELD_NONE;
+ ov5640->format.colorspace = V4L2_COLORSPACE_JPEG;
+
+ v4l2_i2c_subdev_init(&ov5640->subdev, client, &ov5640_subdev_ops);
+ ov5640->subdev.internal_ops = &ov5640_subdev_internal_ops;
+ ov5640->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ ov5640->subdev.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+
+ ov5640->pad.flags = MEDIA_PAD_FL_SOURCE;
+ ret = media_entity_init(&ov5640->subdev.entity, 1, &ov5640->pad, 0);
+ if (ret < 0)
+ goto err_mediainit;
+
+ return ret;
+
+err_mediainit:
+ v4l2_device_unregister_subdev(&ov5640->subdev);
+ kfree(ov5640);
+ return ret;
+}
+
+static int ov5640_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *subdev = i2c_get_clientdata(client);
+ struct ov5640 *ov5640 = to_ov5640(subdev);
+
+ v4l2_ctrl_handler_free(&ov5640->ctrl_handler);
+ v4l2_device_unregister_subdev(subdev);
+ media_entity_cleanup(&subdev->entity);
+ kfree(ov5640);
+ return 0;
+}
+
+static const struct i2c_device_id ov5640_id[] = {
+ { "ov5640", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ov5640_id);
+
+static struct i2c_driver ov5640_i2c_driver = {
+ .driver = {
+ .name = "ov5640",
+ },
+ .probe = ov5640_probe,
+ .remove = ov5640_remove,
+ .id_table = ov5640_id,
+};
+
+static int __init ov5640_mod_init(void)
+{
+ return i2c_add_driver(&ov5640_i2c_driver);
+}
+
+static void __exit ov5640_mod_exit(void)
+{
+ i2c_del_driver(&ov5640_i2c_driver);
+}
+
+module_init(ov5640_mod_init);
+module_exit(ov5640_mod_exit);
+
+MODULE_DESCRIPTION("OmniVision OV5640 Camera driver");
+MODULE_AUTHOR("Sergio Aguirre <saagui...@ti.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/include/media/ov5640.h b/include/media/ov5640.h
new file mode 100644
index 0000000..65625ce
--- /dev/null
+++ b/include/media/ov5640.h
@@ -0,0 +1,10 @@
+#ifndef _MEDIA_OV5640_H
+#define _MEDIA_OV5640_H
+
+#include <media/v4l2-subdev.h>
+
+struct ov5640_platform_data {
+ int (*s_power)(struct v4l2_subdev *subdev, int on);
+};
+
+#endif
--
1.7.5.4
--
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