2012/5/2 Sergio Aguirre <saaguirre@xxxxxx>: > 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. > There is already a limited driver in mainline for ov5642. How does the 5642 differ from 5640 ? Can a single driver handle both chip ? > Signed-off-by: Sergio Aguirre <saaguirre@xxxxxx> > --- > 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 <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 > -- > 1.7.5.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-media" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
