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V4L/DVB (13040): V4L2: Add a v4l2-subdev (soc-camera) driver for OmniVision OV9640 sensor

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Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Marek Vasut 2009-09-23 04:59:24 -03:00 committed by Mauro Carvalho Chehab
parent 96fa2b508d
commit 8d64827172
5 changed files with 1018 additions and 0 deletions
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6
drivers/media/video/Kconfig
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@ -865,6 +865,12 @@ config SOC_CAMERA_OV772X
help
This is a ov772x camera driver
config SOC_CAMERA_OV9640
tristate "ov9640 camera support"
depends on SOC_CAMERA && I2C
help
This is a ov9640 camera driver
config MX1_VIDEO
bool

1
drivers/media/video/Makefile
View File

@ -77,6 +77,7 @@ obj-$(CONFIG_SOC_CAMERA_MT9M111) += mt9m111.o
obj-$(CONFIG_SOC_CAMERA_MT9T031) += mt9t031.o
obj-$(CONFIG_SOC_CAMERA_MT9V022) += mt9v022.o
obj-$(CONFIG_SOC_CAMERA_OV772X) += ov772x.o
obj-$(CONFIG_SOC_CAMERA_OV9640) += ov9640.o
obj-$(CONFIG_SOC_CAMERA_TW9910) += tw9910.o
# And now the v4l2 drivers:

801
drivers/media/video/ov9640.c Normal file
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@ -0,0 +1,801 @@
/*
* OmniVision OV96xx Camera Driver
*
* Copyright (C) 2009 Marek Vasut <marek.vasut@gmail.com>
*
* Based on ov772x camera driver:
*
* Copyright (C) 2008 Renesas Solutions Corp.
* Kuninori Morimoto <morimoto.kuninori@renesas.com>
*
* Based on ov7670 and soc_camera_platform driver,
*
* Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
* Copyright (C) 2008 Magnus Damm
* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/videodev2.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-common.h>
#include <media/soc_camera.h>
#include "ov9640.h"
/* default register setup */
static const struct ov9640_reg ov9640_regs_dflt[] = {
{ OV9640_COM5, OV9640_COM5_SYSCLK | OV9640_COM5_LONGEXP },
{ OV9640_COM6, OV9640_COM6_OPT_BLC | OV9640_COM6_ADBLC_BIAS |
OV9640_COM6_FMT_RST | OV9640_COM6_ADBLC_OPTEN },
{ OV9640_PSHFT, OV9640_PSHFT_VAL(0x01) },
{ OV9640_ACOM, OV9640_ACOM_2X_ANALOG | OV9640_ACOM_RSVD },
{ OV9640_TSLB, OV9640_TSLB_YUYV_UYVY },
{ OV9640_COM16, OV9640_COM16_RB_AVG },
/* Gamma curve P */
{ 0x6c, 0x40 }, { 0x6d, 0x30 }, { 0x6e, 0x4b }, { 0x6f, 0x60 },
{ 0x70, 0x70 }, { 0x71, 0x70 }, { 0x72, 0x70 }, { 0x73, 0x70 },
{ 0x74, 0x60 }, { 0x75, 0x60 }, { 0x76, 0x50 }, { 0x77, 0x48 },
{ 0x78, 0x3a }, { 0x79, 0x2e }, { 0x7a, 0x28 }, { 0x7b, 0x22 },
/* Gamma curve T */
{ 0x7c, 0x04 }, { 0x7d, 0x07 }, { 0x7e, 0x10 }, { 0x7f, 0x28 },
{ 0x80, 0x36 }, { 0x81, 0x44 }, { 0x82, 0x52 }, { 0x83, 0x60 },
{ 0x84, 0x6c }, { 0x85, 0x78 }, { 0x86, 0x8c }, { 0x87, 0x9e },
{ 0x88, 0xbb }, { 0x89, 0xd2 }, { 0x8a, 0xe6 },
};
/* Configurations
* NOTE: for YUV, alter the following registers:
* COM12 |= OV9640_COM12_YUV_AVG
*
* for RGB, alter the following registers:
* COM7 |= OV9640_COM7_RGB
* COM13 |= OV9640_COM13_RGB_AVG
* COM15 |= proper RGB color encoding mode
*/
static const struct ov9640_reg ov9640_regs_qqcif[] = {
{ OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x0f) },
{ OV9640_COM1, OV9640_COM1_QQFMT | OV9640_COM1_HREF_2SKIP },
{ OV9640_COM4, OV9640_COM4_QQ_VP | OV9640_COM4_RSVD },
{ OV9640_COM7, OV9640_COM7_QCIF },
{ OV9640_COM12, OV9640_COM12_RSVD },
{ OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },
{ OV9640_COM15, OV9640_COM15_OR_10F0 },
};
static const struct ov9640_reg ov9640_regs_qqvga[] = {
{ OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x07) },
{ OV9640_COM1, OV9640_COM1_QQFMT | OV9640_COM1_HREF_2SKIP },
{ OV9640_COM4, OV9640_COM4_QQ_VP | OV9640_COM4_RSVD },
{ OV9640_COM7, OV9640_COM7_QVGA },
{ OV9640_COM12, OV9640_COM12_RSVD },
{ OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },
{ OV9640_COM15, OV9640_COM15_OR_10F0 },
};
static const struct ov9640_reg ov9640_regs_qcif[] = {
{ OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x07) },
{ OV9640_COM4, OV9640_COM4_QQ_VP | OV9640_COM4_RSVD },
{ OV9640_COM7, OV9640_COM7_QCIF },
{ OV9640_COM12, OV9640_COM12_RSVD },
{ OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },
{ OV9640_COM15, OV9640_COM15_OR_10F0 },
};
static const struct ov9640_reg ov9640_regs_qvga[] = {
{ OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x03) },
{ OV9640_COM4, OV9640_COM4_QQ_VP | OV9640_COM4_RSVD },
{ OV9640_COM7, OV9640_COM7_QVGA },
{ OV9640_COM12, OV9640_COM12_RSVD },
{ OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },
{ OV9640_COM15, OV9640_COM15_OR_10F0 },
};
static const struct ov9640_reg ov9640_regs_cif[] = {
{ OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x03) },
{ OV9640_COM3, OV9640_COM3_VP },
{ OV9640_COM7, OV9640_COM7_CIF },
{ OV9640_COM12, OV9640_COM12_RSVD },
{ OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },
{ OV9640_COM15, OV9640_COM15_OR_10F0 },
};
static const struct ov9640_reg ov9640_regs_vga[] = {
{ OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x01) },
{ OV9640_COM3, OV9640_COM3_VP },
{ OV9640_COM7, OV9640_COM7_VGA },
{ OV9640_COM12, OV9640_COM12_RSVD },
{ OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },
{ OV9640_COM15, OV9640_COM15_OR_10F0 },
};
static const struct ov9640_reg ov9640_regs_sxga[] = {
{ OV9640_CLKRC, OV9640_CLKRC_DPLL_EN | OV9640_CLKRC_DIV(0x01) },
{ OV9640_COM3, OV9640_COM3_VP },
{ OV9640_COM7, 0 },
{ OV9640_COM12, OV9640_COM12_RSVD },
{ OV9640_COM13, OV9640_COM13_GAMMA_RAW | OV9640_COM13_MATRIX_EN },
{ OV9640_COM15, OV9640_COM15_OR_10F0 },
};
static const struct ov9640_reg ov9640_regs_yuv[] = {
{ OV9640_MTX1, 0x58 },
{ OV9640_MTX2, 0x48 },
{ OV9640_MTX3, 0x10 },
{ OV9640_MTX4, 0x28 },
{ OV9640_MTX5, 0x48 },
{ OV9640_MTX6, 0x70 },
{ OV9640_MTX7, 0x40 },
{ OV9640_MTX8, 0x40 },
{ OV9640_MTX9, 0x40 },
{ OV9640_MTXS, 0x0f },
};
static const struct ov9640_reg ov9640_regs_rgb[] = {
{ OV9640_MTX1, 0x71 },
{ OV9640_MTX2, 0x3e },
{ OV9640_MTX3, 0x0c },
{ OV9640_MTX4, 0x33 },
{ OV9640_MTX5, 0x72 },
{ OV9640_MTX6, 0x00 },
{ OV9640_MTX7, 0x2b },
{ OV9640_MTX8, 0x66 },
{ OV9640_MTX9, 0xd2 },
{ OV9640_MTXS, 0x65 },
};
/*
* TODO: this sensor also supports RGB555 and RGB565 formats, but support for
* them has not yet been sufficiently tested and so it is not included with
* this version of the driver. To test and debug these formats add two entries
* to the below array, see ov722x.c for an example.
*/
static const struct soc_camera_data_format ov9640_fmt_lists[] = {
{
.name = "UYVY",
.fourcc = V4L2_PIX_FMT_UYVY,
.depth = 16,
.colorspace = V4L2_COLORSPACE_JPEG,
},
};
static const struct v4l2_queryctrl ov9640_controls[] = {
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Flip Vertically",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Flip Horizontally",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0,
},
};
/* read a register */
static int ov9640_reg_read(struct i2c_client *client, u8 reg, u8 *val)
{
int ret;
u8 data = reg;
struct i2c_msg msg = {
.addr = client->addr,
.flags = 0,
.len = 1,
.buf = &data,
};
ret = i2c_transfer(client->adapter, &msg, 1);
if (ret < 0)
goto err;
msg.flags = I2C_M_RD;
ret = i2c_transfer(client->adapter, &msg, 1);
if (ret < 0)
goto err;
*val = data;
return 0;
err:
dev_err(&client->dev, "Failed reading register 0x%02x!\n", reg);
return ret;
}
/* write a register */
static int ov9640_reg_write(struct i2c_client *client, u8 reg, u8 val)
{
int ret;
u8 _val;
unsigned char data[2] = { reg, val };
struct i2c_msg msg = {
.addr = client->addr,
.flags = 0,
.len = 2,
.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;
}
/* we have to read the register back ... no idea why, maybe HW bug */
ret = ov9640_reg_read(client, reg, &_val);
if (ret)
dev_err(&client->dev,
"Failed reading back register 0x%02x!\n", reg);
return 0;
}
/* Read a register, alter its bits, write it back */
static int ov9640_reg_rmw(struct i2c_client *client, u8 reg, u8 set, u8 unset)
{
u8 val;
int ret;
ret = ov9640_reg_read(client, reg, &val);
if (ret) {
dev_err(&client->dev,
"[Read]-Modify-Write of register %02x failed!\n", reg);
return val;
}
val |= set;
val &= ~unset;
ret = ov9640_reg_write(client, reg, val);
if (ret)
dev_err(&client->dev,
"Read-Modify-[Write] of register %02x failed!\n", reg);
return ret;
}
/* Soft reset the camera. This has nothing to do with the RESET pin! */
static int ov9640_reset(struct i2c_client *client)
{
int ret;
ret = ov9640_reg_write(client, OV9640_COM7, OV9640_COM7_SCCB_RESET);
if (ret)
dev_err(&client->dev,
"An error occured while entering soft reset!\n");
return ret;
}
/* Start/Stop streaming from the device */
static int ov9640_s_stream(struct v4l2_subdev *sd, int enable)
{
return 0;
}
/* Alter bus settings on camera side */
static int ov9640_set_bus_param(struct soc_camera_device *icd,
unsigned long flags)
{
return 0;
}
/* Request bus settings on camera side */
static unsigned long ov9640_query_bus_param(struct soc_camera_device *icd)
{
struct soc_camera_link *icl = to_soc_camera_link(icd);
/*
* REVISIT: the camera probably can do 10 bit transfers, but I don't
* have those pins connected on my hardware.
*/
unsigned long flags = SOCAM_PCLK_SAMPLE_RISING | SOCAM_MASTER |
SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_HIGH |
SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
return soc_camera_apply_sensor_flags(icl, flags);
}
/* Get status of additional camera capabilities */
static int ov9640_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct i2c_client *client = sd->priv;
struct ov9640_priv *priv = container_of(i2c_get_clientdata(client),
struct ov9640_priv, subdev);
switch (ctrl->id) {
case V4L2_CID_VFLIP:
ctrl->value = priv->flag_vflip;
break;
case V4L2_CID_HFLIP:
ctrl->value = priv->flag_hflip;
break;
}
return 0;
}
/* Set status of additional camera capabilities */
static int ov9640_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
struct i2c_client *client = sd->priv;
struct ov9640_priv *priv = container_of(i2c_get_clientdata(client),
struct ov9640_priv, subdev);
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_VFLIP:
priv->flag_vflip = ctrl->value;
if (ctrl->value)
ret = ov9640_reg_rmw(client, OV9640_MVFP,
OV9640_MVFP_V, 0);
else
ret = ov9640_reg_rmw(client, OV9640_MVFP,
0, OV9640_MVFP_V);
break;
case V4L2_CID_HFLIP:
priv->flag_hflip = ctrl->value;
if (ctrl->value)
ret = ov9640_reg_rmw(client, OV9640_MVFP,
OV9640_MVFP_H, 0);
else
ret = ov9640_reg_rmw(client, OV9640_MVFP,
0, OV9640_MVFP_H);
break;
}
return ret;
}
/* Get chip identification */
static int ov9640_g_chip_ident(struct v4l2_subdev *sd,
struct v4l2_dbg_chip_ident *id)
{
struct i2c_client *client = sd->priv;
struct ov9640_priv *priv = container_of(i2c_get_clientdata(client),
struct ov9640_priv, subdev);
id->ident = priv->model;
id->revision = priv->revision;
return 0;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
static int ov9640_get_register(struct v4l2_subdev *sd,
struct v4l2_dbg_register *reg)
{
struct i2c_client *client = sd->priv;
int ret;
u8 val;
if (reg->reg & ~0xff)
return -EINVAL;
reg->size = 1;
ret = ov9640_reg_read(client, reg->reg, &val);
if (ret)
return ret;
reg->val = (__u64)val;
return 0;
}
static int ov9640_set_register(struct v4l2_subdev *sd,
struct v4l2_dbg_register *reg)
{
struct i2c_client *client = sd->priv;
if (reg->reg & ~0xff || reg->val & ~0xff)
return -EINVAL;
return ov9640_reg_write(client, reg->reg, reg->val);
}
#endif
/* select nearest higher resolution for capture */
static void ov9640_res_roundup(u32 *width, u32 *height)
{
int i;
enum { QQCIF, QQVGA, QCIF, QVGA, CIF, VGA, SXGA };
int res_x[] = { 88, 160, 176, 320, 352, 640, 1280 };
int res_y[] = { 72, 120, 144, 240, 288, 480, 960 };
for (i = 0; i < ARRAY_SIZE(res_x); i++) {
if (res_x[i] >= *width && res_y[i] >= *height) {
*width = res_x[i];
*height = res_y[i];
return;
}
}
*width = res_x[SXGA];
*height = res_y[SXGA];
}
/* Prepare necessary register changes depending on color encoding */
static void ov9640_alter_regs(u32 pixfmt, struct ov9640_reg_alt *alt)
{
switch (pixfmt) {
case V4L2_PIX_FMT_UYVY:
alt->com12 = OV9640_COM12_YUV_AVG;
alt->com13 = OV9640_COM13_Y_DELAY_EN |
OV9640_COM13_YUV_DLY(0x01);
break;
case V4L2_PIX_FMT_RGB555:
alt->com7 = OV9640_COM7_RGB;
alt->com13 = OV9640_COM13_RGB_AVG;
alt->com15 = OV9640_COM15_RGB_555;
break;
case V4L2_PIX_FMT_RGB565:
alt->com7 = OV9640_COM7_RGB;
alt->com13 = OV9640_COM13_RGB_AVG;
alt->com15 = OV9640_COM15_RGB_565;
break;
};
}
/* Setup registers according to resolution and color encoding */
static int ov9640_write_regs(struct i2c_client *client,
u32 width, u32 pixfmt, struct ov9640_reg_alt *alts)
{
const struct ov9640_reg *ov9640_regs, *matrix_regs;
int ov9640_regs_len, matrix_regs_len;
int i, ret;
u8 val;
/* select register configuration for given resolution */
switch (width) {
case W_QQCIF:
ov9640_regs = ov9640_regs_qqcif;
ov9640_regs_len = ARRAY_SIZE(ov9640_regs_qqcif);
break;
case W_QQVGA:
ov9640_regs = ov9640_regs_qqvga;
ov9640_regs_len = ARRAY_SIZE(ov9640_regs_qqvga);
break;
case W_QCIF:
ov9640_regs = ov9640_regs_qcif;
ov9640_regs_len = ARRAY_SIZE(ov9640_regs_qcif);
break;
case W_QVGA:
ov9640_regs = ov9640_regs_qvga;
ov9640_regs_len = ARRAY_SIZE(ov9640_regs_qvga);
break;
case W_CIF:
ov9640_regs = ov9640_regs_cif;
ov9640_regs_len = ARRAY_SIZE(ov9640_regs_cif);
break;
case W_VGA:
ov9640_regs = ov9640_regs_vga;
ov9640_regs_len = ARRAY_SIZE(ov9640_regs_vga);
break;
case W_SXGA:
ov9640_regs = ov9640_regs_sxga;
ov9640_regs_len = ARRAY_SIZE(ov9640_regs_sxga);
break;
default:
dev_err(&client->dev, "Failed to select resolution!\n");
return -EINVAL;
}
/* select color matrix configuration for given color encoding */
if (pixfmt == V4L2_PIX_FMT_UYVY) {
matrix_regs = ov9640_regs_yuv;
matrix_regs_len = ARRAY_SIZE(ov9640_regs_yuv);
} else {
matrix_regs = ov9640_regs_rgb;
matrix_regs_len = ARRAY_SIZE(ov9640_regs_rgb);
}
/* write register settings into the module */
for (i = 0; i < ov9640_regs_len; i++) {
val = ov9640_regs[i].val;
switch (ov9640_regs[i].reg) {
case OV9640_COM7:
val |= alts->com7;
break;
case OV9640_COM12:
val |= alts->com12;
break;
case OV9640_COM13:
val |= alts->com13;
break;
case OV9640_COM15:
val |= alts->com15;
break;
}
ret = ov9640_reg_write(client, ov9640_regs[i].reg, val);
if (ret)
return ret;
}
/* write color matrix configuration into the module */
for (i = 0; i < matrix_regs_len; i++) {
ret = ov9640_reg_write(client, matrix_regs[i].reg,
matrix_regs[i].val);
if (ret)
return ret;
}
return 0;
}
/* program default register values */
static int ov9640_prog_dflt(struct i2c_client *client)
{
int i, ret;
for (i = 0; i < ARRAY_SIZE(ov9640_regs_dflt); i++) {
ret = ov9640_reg_write(client, ov9640_regs_dflt[i].reg,
ov9640_regs_dflt[i].val);
if (ret)
return ret;
}
/* wait for the changes to actually happen, 140ms are not enough yet */
mdelay(150);
return 0;
}
/* set the format we will capture in */
static int ov9640_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
{
struct i2c_client *client = sd->priv;
struct v4l2_pix_format *pix = &f->fmt.pix;
struct ov9640_reg_alt alts = {0};
int ret;
ov9640_res_roundup(&pix->width, &pix->height);
ov9640_alter_regs(pix->pixelformat, &alts);
ov9640_reset(client);
ret = ov9640_prog_dflt(client);
if (ret)
return ret;
return ov9640_write_regs(client, pix->width, pix->pixelformat, &alts);
}
static int ov9640_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f)
{
struct v4l2_pix_format *pix = &f->fmt.pix;
ov9640_res_roundup(&pix->width, &pix->height);
pix->field = V4L2_FIELD_NONE;
return 0;
}
static int ov9640_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
{
a->c.left = 0;
a->c.top = 0;
a->c.width = W_SXGA;
a->c.height = H_SXGA;
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
return 0;
}
static int ov9640_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
{
a->bounds.left = 0;
a->bounds.top = 0;
a->bounds.width = W_SXGA;
a->bounds.height = H_SXGA;
a->defrect = a->bounds;
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
a->pixelaspect.numerator = 1;
a->pixelaspect.denominator = 1;
return 0;
}
static int ov9640_video_probe(struct soc_camera_device *icd,
struct i2c_client *client)
{
struct ov9640_priv *priv = i2c_get_clientdata(client);
u8 pid, ver, midh, midl;
const char *devname;
int ret = 0;
/*
* We must have a parent by now. And it cannot be a wrong one.
* So this entire test is completely redundant.
*/
if (!icd->dev.parent ||
to_soc_camera_host(icd->dev.parent)->nr != icd->iface) {
dev_err(&client->dev, "Parent missing or invalid!\n");
ret = -ENODEV;
goto err;
}
icd->formats = ov9640_fmt_lists;
icd->num_formats = ARRAY_SIZE(ov9640_fmt_lists);
/*
* check and show product ID and manufacturer ID
*/
ret = ov9640_reg_read(client, OV9640_PID, &pid);
if (ret)
goto err;
ret = ov9640_reg_read(client, OV9640_VER, &ver);
if (ret)
goto err;
ret = ov9640_reg_read(client, OV9640_MIDH, &midh);
if (ret)
goto err;
ret = ov9640_reg_read(client, OV9640_MIDL, &midl);
if (ret)
goto err;
switch (VERSION(pid, ver)) {
case OV9640_V2:
devname = "ov9640";
priv->model = V4L2_IDENT_OV9640;
priv->revision = 2;
case OV9640_V3:
devname = "ov9640";
priv->model = V4L2_IDENT_OV9640;
priv->revision = 3;
break;
default:
dev_err(&client->dev, "Product ID error %x:%x\n", pid, ver);
ret = -ENODEV;
goto err;
}
dev_info(&client->dev, "%s Product ID %0x:%0x Manufacturer ID %x:%x\n",
devname, pid, ver, midh, midl);
err:
return ret;
}
static struct soc_camera_ops ov9640_ops = {
.set_bus_param = ov9640_set_bus_param,
.query_bus_param = ov9640_query_bus_param,
.controls = ov9640_controls,
.num_controls = ARRAY_SIZE(ov9640_controls),
};
static struct v4l2_subdev_core_ops ov9640_core_ops = {
.g_ctrl = ov9640_g_ctrl,
.s_ctrl = ov9640_s_ctrl,
.g_chip_ident = ov9640_g_chip_ident,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = ov9640_get_register,
.s_register = ov9640_set_register,
#endif
};
static struct v4l2_subdev_video_ops ov9640_video_ops = {
.s_stream = ov9640_s_stream,
.s_fmt = ov9640_s_fmt,
.try_fmt = ov9640_try_fmt,
.cropcap = ov9640_cropcap,
.g_crop = ov9640_g_crop,
};
static struct v4l2_subdev_ops ov9640_subdev_ops = {
.core = &ov9640_core_ops,
.video = &ov9640_video_ops,
};
/*
* i2c_driver function
*/
static int ov9640_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct ov9640_priv *priv;
struct soc_camera_device *icd = client->dev.platform_data;
struct soc_camera_link *icl;
int ret;
if (!icd) {
dev_err(&client->dev, "Missing soc-camera data!\n");
return -EINVAL;
}
icl = to_soc_camera_link(icd);
if (!icl) {
dev_err(&client->dev, "Missing platform_data for driver\n");
return -EINVAL;
}
priv = kzalloc(sizeof(struct ov9640_priv), GFP_KERNEL);
if (!priv) {
dev_err(&client->dev,
"Failed to allocate memory for private data!\n");
return -ENOMEM;
}
v4l2_i2c_subdev_init(&priv->subdev, client, &ov9640_subdev_ops);
icd->ops = &ov9640_ops;
ret = ov9640_video_probe(icd, client);
if (ret) {
icd->ops = NULL;
i2c_set_clientdata(client, NULL);
kfree(priv);
}
return ret;
}
static int ov9640_remove(struct i2c_client *client)
{
struct ov9640_priv *priv = i2c_get_clientdata(client);
i2c_set_clientdata(client, NULL);
kfree(priv);
return 0;
}
static const struct i2c_device_id ov9640_id[] = {
{ "ov9640", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ov9640_id);
static struct i2c_driver ov9640_i2c_driver = {
.driver = {
.name = "ov9640",
},
.probe = ov9640_probe,
.remove = ov9640_remove,
.id_table = ov9640_id,
};
static int __init ov9640_module_init(void)
{
return i2c_add_driver(&ov9640_i2c_driver);
}
static void __exit ov9640_module_exit(void)
{
i2c_del_driver(&ov9640_i2c_driver);
}
module_init(ov9640_module_init);
module_exit(ov9640_module_exit);
MODULE_DESCRIPTION("SoC Camera driver for OmniVision OV96xx");
MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
MODULE_LICENSE("GPL v2");

209
drivers/media/video/ov9640.h Normal file
View File

@ -0,0 +1,209 @@
/*
* OmniVision OV96xx Camera Header File
*
* Copyright (C) 2009 Marek Vasut <marek.vasut@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __DRIVERS_MEDIA_VIDEO_OV9640_H__
#define __DRIVERS_MEDIA_VIDEO_OV9640_H__
/* Register definitions */
#define OV9640_GAIN 0x00
#define OV9640_BLUE 0x01
#define OV9640_RED 0x02
#define OV9640_VFER 0x03
#define OV9640_COM1 0x04
#define OV9640_BAVE 0x05
#define OV9640_GEAVE 0x06
#define OV9640_RSID 0x07
#define OV9640_RAVE 0x08
#define OV9640_COM2 0x09
#define OV9640_PID 0x0a
#define OV9640_VER 0x0b
#define OV9640_COM3 0x0c
#define OV9640_COM4 0x0d
#define OV9640_COM5 0x0e
#define OV9640_COM6 0x0f
#define OV9640_AECH 0x10
#define OV9640_CLKRC 0x11
#define OV9640_COM7 0x12
#define OV9640_COM8 0x13
#define OV9640_COM9 0x14
#define OV9640_COM10 0x15
/* 0x16 - RESERVED */
#define OV9640_HSTART 0x17
#define OV9640_HSTOP 0x18
#define OV9640_VSTART 0x19
#define OV9640_VSTOP 0x1a
#define OV9640_PSHFT 0x1b
#define OV9640_MIDH 0x1c
#define OV9640_MIDL 0x1d
#define OV9640_MVFP 0x1e
#define OV9640_LAEC 0x1f
#define OV9640_BOS 0x20
#define OV9640_GBOS 0x21
#define OV9640_GROS 0x22
#define OV9640_ROS 0x23
#define OV9640_AEW 0x24
#define OV9640_AEB 0x25
#define OV9640_VPT 0x26
#define OV9640_BBIAS 0x27
#define OV9640_GBBIAS 0x28
/* 0x29 - RESERVED */
#define OV9640_EXHCH 0x2a
#define OV9640_EXHCL 0x2b
#define OV9640_RBIAS 0x2c
#define OV9640_ADVFL 0x2d
#define OV9640_ADVFH 0x2e
#define OV9640_YAVE 0x2f
#define OV9640_HSYST 0x30
#define OV9640_HSYEN 0x31
#define OV9640_HREF 0x32
#define OV9640_CHLF 0x33
#define OV9640_ARBLM 0x34
/* 0x35..0x36 - RESERVED */
#define OV9640_ADC 0x37
#define OV9640_ACOM 0x38
#define OV9640_OFON 0x39
#define OV9640_TSLB 0x3a
#define OV9640_COM11 0x3b
#define OV9640_COM12 0x3c
#define OV9640_COM13 0x3d
#define OV9640_COM14 0x3e
#define OV9640_EDGE 0x3f
#define OV9640_COM15 0x40
#define OV9640_COM16 0x41
#define OV9640_COM17 0x42
/* 0x43..0x4e - RESERVED */
#define OV9640_MTX1 0x4f
#define OV9640_MTX2 0x50
#define OV9640_MTX3 0x51
#define OV9640_MTX4 0x52
#define OV9640_MTX5 0x53
#define OV9640_MTX6 0x54
#define OV9640_MTX7 0x55
#define OV9640_MTX8 0x56
#define OV9640_MTX9 0x57
#define OV9640_MTXS 0x58
/* 0x59..0x61 - RESERVED */
#define OV9640_LCC1 0x62
#define OV9640_LCC2 0x63
#define OV9640_LCC3 0x64
#define OV9640_LCC4 0x65
#define OV9640_LCC5 0x66
#define OV9640_MANU 0x67
#define OV9640_MANV 0x68
#define OV9640_HV 0x69
#define OV9640_MBD 0x6a
#define OV9640_DBLV 0x6b
#define OV9640_GSP 0x6c /* ... till 0x7b */
#define OV9640_GST 0x7c /* ... till 0x8a */
#define OV9640_CLKRC_DPLL_EN 0x80
#define OV9640_CLKRC_DIRECT 0x40
#define OV9640_CLKRC_DIV(x) ((x) & 0x3f)
#define OV9640_PSHFT_VAL(x) ((x) & 0xff)
#define OV9640_ACOM_2X_ANALOG 0x80
#define OV9640_ACOM_RSVD 0x12
#define OV9640_MVFP_V 0x10
#define OV9640_MVFP_H 0x20
#define OV9640_COM1_HREF_NOSKIP 0x00
#define OV9640_COM1_HREF_2SKIP 0x04
#define OV9640_COM1_HREF_3SKIP 0x08
#define OV9640_COM1_QQFMT 0x20
#define OV9640_COM2_SSM 0x10
#define OV9640_COM3_VP 0x04
#define OV9640_COM4_QQ_VP 0x80
#define OV9640_COM4_RSVD 0x40
#define OV9640_COM5_SYSCLK 0x80
#define OV9640_COM5_LONGEXP 0x01
#define OV9640_COM6_OPT_BLC 0x40
#define OV9640_COM6_ADBLC_BIAS 0x08
#define OV9640_COM6_FMT_RST 0x82
#define OV9640_COM6_ADBLC_OPTEN 0x01
#define OV9640_COM7_RAW_RGB 0x01
#define OV9640_COM7_RGB 0x04
#define OV9640_COM7_QCIF 0x08
#define OV9640_COM7_QVGA 0x10
#define OV9640_COM7_CIF 0x20
#define OV9640_COM7_VGA 0x40
#define OV9640_COM7_SCCB_RESET 0x80
#define OV9640_TSLB_YVYU_YUYV 0x04
#define OV9640_TSLB_YUYV_UYVY 0x08
#define OV9640_COM12_YUV_AVG 0x04
#define OV9640_COM12_RSVD 0x40
#define OV9640_COM13_GAMMA_NONE 0x00
#define OV9640_COM13_GAMMA_Y 0x40
#define OV9640_COM13_GAMMA_RAW 0x80
#define OV9640_COM13_RGB_AVG 0x20
#define OV9640_COM13_MATRIX_EN 0x10
#define OV9640_COM13_Y_DELAY_EN 0x08
#define OV9640_COM13_YUV_DLY(x) ((x) & 0x07)
#define OV9640_COM15_OR_00FF 0x00
#define OV9640_COM15_OR_01FE 0x40
#define OV9640_COM15_OR_10F0 0xc0
#define OV9640_COM15_RGB_NORM 0x00
#define OV9640_COM15_RGB_565 0x10
#define OV9640_COM15_RGB_555 0x30
#define OV9640_COM16_RB_AVG 0x01
/* IDs */
#define OV9640_V2 0x9648
#define OV9640_V3 0x9649
#define VERSION(pid, ver) (((pid) << 8) | ((ver) & 0xFF))
/* supported resolutions */
enum {
W_QQCIF = 88,
W_QQVGA = 160,
W_QCIF = 176,
W_QVGA = 320,
W_CIF = 352,
W_VGA = 640,
W_SXGA = 1280
};
#define H_SXGA 960
/* Misc. structures */
struct ov9640_reg_alt {
u8 com7;
u8 com12;
u8 com13;
u8 com15;
};
struct ov9640_reg {
u8 reg;
u8 val;
};
struct ov9640_priv {
struct v4l2_subdev subdev;
int model;
int revision;
bool flag_vflip;
bool flag_hflip;
};
#endif /* __DRIVERS_MEDIA_VIDEO_OV9640_H__ */

1
include/media/v4l2-chip-ident.h
View File

@ -64,6 +64,7 @@ enum {
V4L2_IDENT_OV9650 = 254,
V4L2_IDENT_OV9655 = 255,
V4L2_IDENT_SOI968 = 256,
V4L2_IDENT_OV9640 = 257,
/* module saa7146: reserved range 300-309 */
V4L2_IDENT_SAA7146 = 300,