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 <saaguirre@xxxxxx> --- drivers/media/video/Kconfig | 6 + drivers/media/video/Makefile | 1 + drivers/media/video/ov5640.c | 972 +++++++++++++++++++++++++++++++++++++++ include/media/ov5640.h | 10 + include/media/v4l2-chip-ident.h | 1 + 5 files changed, 990 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 ae2a99d..3ee4fc9 100644 --- a/drivers/media/video/Kconfig +++ b/drivers/media/video/Kconfig @@ -467,6 +467,12 @@ 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_MT9P031 tristate "Aptina MT9P031 support" depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile index f02a4c4..d296c7b 100644 --- a/drivers/media/video/Makefile +++ b/drivers/media/video/Makefile @@ -63,6 +63,7 @@ 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_MT9P031) += mt9p031.o diff --git a/drivers/media/video/ov5640.c b/drivers/media/video/ov5640.c new file mode 100644 index 0000000..c93802a --- /dev/null +++ b/drivers/media/video/ov5640.c @@ -0,0 +1,972 @@ +/* + * 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/ov5640.h> + +#define OV5640_BRIGHTNESS_MIN 0 +#define OV5640_BRIGHTNESS_MAX 200 +#define OV5640_BRIGHTNESS_STEP 100 +#define OV5640_BRIGHTNESS_DEF 100 + +#define OV5640_CONTRAST_MIN 0 +#define OV5640_CONTRAST_MAX 200 +#define OV5640_CONTRAST_STEP 100 +#define OV5640_CONTRAST_DEF 100 + +/* 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; + const struct ov5640_platform_data *pdata; + int brightness; + int contrast; + int colorlevel; +}; + +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 i2c_client *client = v4l2_get_subdevdata(sd); + struct ov5640 *ov5640 = to_ov5640(sd); + int ret; + + ret = ov5640->pdata->s_power(sd, on); + if (ret) + goto out; + + if (on) { + /* 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; + } + +out: + return ret; +} + +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; + + 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_set(client, 0x5001, 0x20); + if (ret) + return ret; + ret = ov5640_reg_write(client, 0x3108, + (i == OV5640_SIZE_720P) ? 0x1 : 0); + } 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); + 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); + +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_init(struct v4l2_subdev *sd) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct ov5640 *ov5640 = to_ov5640(sd); + int ret = 0; + + /* default brightness and contrast */ + ov5640->brightness = OV5640_BRIGHTNESS_DEF; + ov5640->contrast = OV5640_CONTRAST_DEF; + + ov5640->colorlevel = V4L2_COLORFX_NONE; + + dev_dbg(&client->dev, "Sensor initialized\n"); + + return ret; +} + +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->pad.flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_init(&ov5640->subdev.entity, 1, &ov5640->pad, 0); + if (ret < 0) + goto err_mediainit; + + /* init the sensor here */ + ret = ov5640_init(&ov5640->subdev); + if (ret) { + dev_err(&client->dev, "Failed to initialize sensor\n"); + goto err_sensorinit; + } + + return ret; +err_sensorinit: + v4l2_device_unregister_subdev(&ov5640->subdev); +err_mediainit: + media_entity_cleanup(&ov5640->subdev.entity); + 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_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 <saaguirre@xxxxxx>"); +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 diff --git a/include/media/v4l2-chip-ident.h b/include/media/v4l2-chip-ident.h index 810a209..de1d680 100644 --- a/include/media/v4l2-chip-ident.h +++ b/include/media/v4l2-chip-ident.h @@ -77,6 +77,7 @@ enum { V4L2_IDENT_OV2640 = 259, V4L2_IDENT_OV9740 = 260, V4L2_IDENT_OV5642 = 261, + V4L2_IDENT_OV5640 = 262, /* module saa7146: reserved range 300-309 */ V4L2_IDENT_SAA7146 = 300, -- 1.7.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
