Hi Jean-Philippe, On Mon, May 7, 2012 at 2:27 AM, jean-philippe francois <jp.francois@xxxxxxxxxx> wrote: > 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 ? Well, it has several differences, see: - OV5640 product brief: http://www.ovt.com/download_document.php?type=sensor&sensorid=93 - OV5642 product brief: http://www.ovt.com/download_document.php?type=sensor&sensorid=65 Some of the most notable differences are: - OV5642 has a MIPI input, for using OV ISP with an external sensor. - OV5640 has JPEG compression, OV5642 apparently not... - OV5640 supports anti-shake, OV5640 apparently not... > Can a single driver handle both chip ? Maybe, yeah.. Now, for the OV5640 differences above, I'm not enabling much nice features so far, so it might be worth a try to attempt the ov5642 driver on my OV5640 as-is, to see if we can expand it to support both. I'll also see if I can reach people at OmniVision to consult feasibility of register settings sharing. Regards, Sergio > > >> 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-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
