kevin/linux
1
Fork 0
Code
d581bcd78b
linux/drivers/media/video/tcm825x.c
Wolfram Sang fbae3fb154 i2c: Remove all i2c_set_clientdata(client, NULL) in drivers 
I2C drivers can use the clientdata-pointer to point to private data. As I2C
devices are not really unregistered, but merely detached from their driver, it
used to be the drivers obligation to clear this pointer during remove() or a
failed probe(). As a couple of drivers forgot to do this, it was agreed that it
was cleaner if the i2c-core does this clearance when appropriate, as there is
no guarantee for the lifetime of the clientdata-pointer after remove() anyhow.
This feature was added to the core with commit
e4a7b9b04d to fix the faulty drivers.

As there is no need anymore to clear the clientdata-pointer, remove all current
occurrences in the drivers to simplify the code and prevent confusion.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-06-03 11:33:58 +02:00

937 lines
22 KiB
C
Raw Blame History

/*
* drivers/media/video/tcm825x.c
*
* TCM825X camera sensor driver.
*
* Copyright (C) 2007 Nokia Corporation.
*
* Contact: Sakari Ailus <sakari.ailus@nokia.com>
*
* Based on code from David Cohen <david.cohen@indt.org.br>
*
* This driver was based on ov9640 sensor driver from MontaVista
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <linux/i2c.h>
#include <media/v4l2-int-device.h>
#include "tcm825x.h"
/*
* The sensor has two fps modes: the lower one just gives half the fps
* at the same xclk than the high one.
*/
#define MAX_FPS 30
#define MIN_FPS 8
#define MAX_HALF_FPS (MAX_FPS / 2)
#define HIGH_FPS_MODE_LOWER_LIMIT 14
#define DEFAULT_FPS MAX_HALF_FPS
struct tcm825x_sensor {
const struct tcm825x_platform_data *platform_data;
struct v4l2_int_device *v4l2_int_device;
struct i2c_client *i2c_client;
struct v4l2_pix_format pix;
struct v4l2_fract timeperframe;
};
/* list of image formats supported by TCM825X sensor */
static const struct v4l2_fmtdesc tcm825x_formats[] = {
{
.description = "YUYV (YUV 4:2:2), packed",
.pixelformat = V4L2_PIX_FMT_UYVY,
}, {
/* Note: V4L2 defines RGB565 as:
*
* Byte 0 Byte 1
* g2 g1 g0 r4 r3 r2 r1 r0 b4 b3 b2 b1 b0 g5 g4 g3
*
* We interpret RGB565 as:
*
* Byte 0 Byte 1
* g2 g1 g0 b4 b3 b2 b1 b0 r4 r3 r2 r1 r0 g5 g4 g3
*/
.description = "RGB565, le",
.pixelformat = V4L2_PIX_FMT_RGB565,
},
};
#define TCM825X_NUM_CAPTURE_FORMATS ARRAY_SIZE(tcm825x_formats)
/*
* TCM825X register configuration for all combinations of pixel format and
* image size
*/
static const struct tcm825x_reg subqcif = { 0x20, TCM825X_PICSIZ };
static const struct tcm825x_reg qcif = { 0x18, TCM825X_PICSIZ };
static const struct tcm825x_reg cif = { 0x14, TCM825X_PICSIZ };
static const struct tcm825x_reg qqvga = { 0x0c, TCM825X_PICSIZ };
static const struct tcm825x_reg qvga = { 0x04, TCM825X_PICSIZ };
static const struct tcm825x_reg vga = { 0x00, TCM825X_PICSIZ };
static const struct tcm825x_reg yuv422 = { 0x00, TCM825X_PICFMT };
static const struct tcm825x_reg rgb565 = { 0x02, TCM825X_PICFMT };
/* Our own specific controls */
#define V4L2_CID_ALC V4L2_CID_PRIVATE_BASE
#define V4L2_CID_H_EDGE_EN V4L2_CID_PRIVATE_BASE + 1
#define V4L2_CID_V_EDGE_EN V4L2_CID_PRIVATE_BASE + 2
#define V4L2_CID_LENS V4L2_CID_PRIVATE_BASE + 3
#define V4L2_CID_MAX_EXPOSURE_TIME V4L2_CID_PRIVATE_BASE + 4
#define V4L2_CID_LAST_PRIV V4L2_CID_MAX_EXPOSURE_TIME
/* Video controls */
static struct vcontrol {
struct v4l2_queryctrl qc;
u16 reg;
u16 start_bit;
} video_control[] = {
{
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gain",
.minimum = 0,
.maximum = 63,
.step = 1,
},
.reg = TCM825X_AG,
.start_bit = 0,
},
{
{
.id = V4L2_CID_RED_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Red Balance",
.minimum = 0,
.maximum = 255,
.step = 1,
},
.reg = TCM825X_MRG,
.start_bit = 0,
},
{
{
.id = V4L2_CID_BLUE_BALANCE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Blue Balance",
.minimum = 0,
.maximum = 255,
.step = 1,
},
.reg = TCM825X_MBG,
.start_bit = 0,
},
{
{
.id = V4L2_CID_AUTO_WHITE_BALANCE,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto White Balance",
.minimum = 0,
.maximum = 1,
.step = 0,
},
.reg = TCM825X_AWBSW,
.start_bit = 7,
},
{
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Exposure Time",
.minimum = 0,
.maximum = 0x1fff,
.step = 1,
},
.reg = TCM825X_ESRSPD_U,
.start_bit = 0,
},
{
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Mirror Image",
.minimum = 0,
.maximum = 1,
.step = 0,
},
.reg = TCM825X_H_INV,
.start_bit = 6,
},
{
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Vertical Flip",
.minimum = 0,
.maximum = 1,
.step = 0,
},
.reg = TCM825X_V_INV,
.start_bit = 7,
},
/* Private controls */
{
{
.id = V4L2_CID_ALC,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto Luminance Control",
.minimum = 0,
.maximum = 1,
.step = 0,
},
.reg = TCM825X_ALCSW,
.start_bit = 7,
},
{
{
.id = V4L2_CID_H_EDGE_EN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Horizontal Edge Enhancement",
.minimum = 0,
.maximum = 0xff,
.step = 1,
},
.reg = TCM825X_HDTG,
.start_bit = 0,
},
{
{
.id = V4L2_CID_V_EDGE_EN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Vertical Edge Enhancement",
.minimum = 0,
.maximum = 0xff,
.step = 1,
},
.reg = TCM825X_VDTG,
.start_bit = 0,
},
{
{
.id = V4L2_CID_LENS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Lens Shading Compensation",
.minimum = 0,
.maximum = 0x3f,
.step = 1,
},
.reg = TCM825X_LENS,
.start_bit = 0,
},
{
{
.id = V4L2_CID_MAX_EXPOSURE_TIME,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Maximum Exposure Time",
.minimum = 0,
.maximum = 0x3,
.step = 1,
},
.reg = TCM825X_ESRLIM,
.start_bit = 5,
},
};
static const struct tcm825x_reg *tcm825x_siz_reg[NUM_IMAGE_SIZES] =
{ &subqcif, &qqvga, &qcif, &qvga, &cif, &vga };
static const struct tcm825x_reg *tcm825x_fmt_reg[NUM_PIXEL_FORMATS] =
{ &yuv422, &rgb565 };
/*
* Read a value from a register in an TCM825X sensor device. The value is
* returned in 'val'.
* Returns zero if successful, or non-zero otherwise.
*/
static int tcm825x_read_reg(struct i2c_client *client, int reg)
{
int err;
struct i2c_msg msg[2];
u8 reg_buf, data_buf = 0;
if (!client->adapter)
return -ENODEV;
msg[0].addr = client->addr;
msg[0].flags = 0;
msg[0].len = 1;
msg[0].buf = &reg_buf;
msg[1].addr = client->addr;
msg[1].flags = I2C_M_RD;
msg[1].len = 1;
msg[1].buf = &data_buf;
reg_buf = reg;
err = i2c_transfer(client->adapter, msg, 2);
if (err < 0)
return err;
return data_buf;
}
/*
* Write a value to a register in an TCM825X sensor device.
* Returns zero if successful, or non-zero otherwise.
*/
static int tcm825x_write_reg(struct i2c_client *client, u8 reg, u8 val)
{
int err;
struct i2c_msg msg[1];
unsigned char data[2];
if (!client->adapter)
return -ENODEV;
msg->addr = client->addr;
msg->flags = 0;
msg->len = 2;
msg->buf = data;
data[0] = reg;
data[1] = val;
err = i2c_transfer(client->adapter, msg, 1);
if (err >= 0)
return 0;
return err;
}
static int __tcm825x_write_reg_mask(struct i2c_client *client,
u8 reg, u8 val, u8 mask)
{
int rc;
/* need to do read - modify - write */
rc = tcm825x_read_reg(client, reg);
if (rc < 0)
return rc;
rc &= (~mask); /* Clear the masked bits */
val &= mask; /* Enforce mask on value */
val |= rc;
/* write the new value to the register */
rc = tcm825x_write_reg(client, reg, val);
if (rc)
return rc;
return 0;
}
#define tcm825x_write_reg_mask(client, regmask, val) \
__tcm825x_write_reg_mask(client, TCM825X_ADDR((regmask)), val, \
TCM825X_MASK((regmask)))
/*
* Initialize a list of TCM825X registers.
* The list of registers is terminated by the pair of values
* { TCM825X_REG_TERM, TCM825X_VAL_TERM }.
* Returns zero if successful, or non-zero otherwise.
*/
static int tcm825x_write_default_regs(struct i2c_client *client,
const struct tcm825x_reg *reglist)
{
int err;
const struct tcm825x_reg *next = reglist;
while (!((next->reg == TCM825X_REG_TERM)
&& (next->val == TCM825X_VAL_TERM))) {
err = tcm825x_write_reg(client, next->reg, next->val);
if (err) {
dev_err(&client->dev, "register writing failed\n");
return err;
}
next++;
}
return 0;
}
static struct vcontrol *find_vctrl(int id)
{
int i;
if (id < V4L2_CID_BASE)
return NULL;
for (i = 0; i < ARRAY_SIZE(video_control); i++)
if (video_control[i].qc.id == id)
return &video_control[i];
return NULL;
}
/*
* Find the best match for a requested image capture size. The best match
* is chosen as the nearest match that has the same number or fewer pixels
* as the requested size, or the smallest image size if the requested size
* has fewer pixels than the smallest image.
*/
static enum image_size tcm825x_find_size(struct v4l2_int_device *s,
unsigned int width,
unsigned int height)
{
enum image_size isize;
unsigned long pixels = width * height;
struct tcm825x_sensor *sensor = s->priv;
for (isize = subQCIF; isize < VGA; isize++) {
if (tcm825x_sizes[isize + 1].height
* tcm825x_sizes[isize + 1].width > pixels) {
dev_dbg(&sensor->i2c_client->dev, "size %d\n", isize);
return isize;
}
}
dev_dbg(&sensor->i2c_client->dev, "format default VGA\n");
return VGA;
}
/*
* Configure the TCM825X for current image size, pixel format, and
* frame period. fper is the frame period (in seconds) expressed as a
* fraction. Returns zero if successful, or non-zero otherwise. The
* actual frame period is returned in fper.
*/
static int tcm825x_configure(struct v4l2_int_device *s)
{
struct tcm825x_sensor *sensor = s->priv;
struct v4l2_pix_format *pix = &sensor->pix;
enum image_size isize = tcm825x_find_size(s, pix->width, pix->height);
struct v4l2_fract *fper = &sensor->timeperframe;
enum pixel_format pfmt;
int err;
u32 tgt_fps;
u8 val;
/* common register initialization */
err = tcm825x_write_default_regs(
sensor->i2c_client, sensor->platform_data->default_regs());
if (err)
return err;
/* configure image size */
val = tcm825x_siz_reg[isize]->val;
dev_dbg(&sensor->i2c_client->dev,
"configuring image size %d\n", isize);
err = tcm825x_write_reg_mask(sensor->i2c_client,
tcm825x_siz_reg[isize]->reg, val);
if (err)
return err;
/* configure pixel format */
switch (pix->pixelformat) {
default:
case V4L2_PIX_FMT_RGB565:
pfmt = RGB565;
break;
case V4L2_PIX_FMT_UYVY:
pfmt = YUV422;
break;
}
dev_dbg(&sensor->i2c_client->dev,
"configuring pixel format %d\n", pfmt);
val = tcm825x_fmt_reg[pfmt]->val;
err = tcm825x_write_reg_mask(sensor->i2c_client,
tcm825x_fmt_reg[pfmt]->reg, val);
if (err)
return err;
/*
* For frame rate < 15, the FPS reg (addr 0x02, bit 7) must be
* set. Frame rate will be halved from the normal.
*/
tgt_fps = fper->denominator / fper->numerator;
if (tgt_fps <= HIGH_FPS_MODE_LOWER_LIMIT) {
val = tcm825x_read_reg(sensor->i2c_client, 0x02);
val |= 0x80;
tcm825x_write_reg(sensor->i2c_client, 0x02, val);
}
return 0;
}
static int ioctl_queryctrl(struct v4l2_int_device *s,
struct v4l2_queryctrl *qc)
{
struct vcontrol *control;
control = find_vctrl(qc->id);
if (control == NULL)
return -EINVAL;
*qc = control->qc;
return 0;
}
static int ioctl_g_ctrl(struct v4l2_int_device *s,
struct v4l2_control *vc)
{
struct tcm825x_sensor *sensor = s->priv;
struct i2c_client *client = sensor->i2c_client;
int val, r;
struct vcontrol *lvc;
/* exposure time is special, spread accross 2 registers */
if (vc->id == V4L2_CID_EXPOSURE) {
int val_lower, val_upper;
val_upper = tcm825x_read_reg(client,
TCM825X_ADDR(TCM825X_ESRSPD_U));
if (val_upper < 0)
return val_upper;
val_lower = tcm825x_read_reg(client,
TCM825X_ADDR(TCM825X_ESRSPD_L));
if (val_lower < 0)
return val_lower;
vc->value = ((val_upper & 0x1f) << 8) | (val_lower);
return 0;
}
lvc = find_vctrl(vc->id);
if (lvc == NULL)
return -EINVAL;
r = tcm825x_read_reg(client, TCM825X_ADDR(lvc->reg));
if (r < 0)
return r;
val = r & TCM825X_MASK(lvc->reg);
val >>= lvc->start_bit;
if (val < 0)
return val;
if (vc->id == V4L2_CID_HFLIP || vc->id == V4L2_CID_VFLIP)
val ^= sensor->platform_data->is_upside_down();
vc->value = val;
return 0;
}
static int ioctl_s_ctrl(struct v4l2_int_device *s,
struct v4l2_control *vc)
{
struct tcm825x_sensor *sensor = s->priv;
struct i2c_client *client = sensor->i2c_client;
struct vcontrol *lvc;
int val = vc->value;
/* exposure time is special, spread accross 2 registers */
if (vc->id == V4L2_CID_EXPOSURE) {
int val_lower, val_upper;
val_lower = val & TCM825X_MASK(TCM825X_ESRSPD_L);
val_upper = (val >> 8) & TCM825X_MASK(TCM825X_ESRSPD_U);
if (tcm825x_write_reg_mask(client,
TCM825X_ESRSPD_U, val_upper))
return -EIO;
if (tcm825x_write_reg_mask(client,
TCM825X_ESRSPD_L, val_lower))
return -EIO;
return 0;
}
lvc = find_vctrl(vc->id);
if (lvc == NULL)
return -EINVAL;
if (vc->id == V4L2_CID_HFLIP || vc->id == V4L2_CID_VFLIP)
val ^= sensor->platform_data->is_upside_down();
val = val << lvc->start_bit;
if (tcm825x_write_reg_mask(client, lvc->reg, val))
return -EIO;
return 0;
}
static int ioctl_enum_fmt_cap(struct v4l2_int_device *s,
struct v4l2_fmtdesc *fmt)
{
int index = fmt->index;
switch (fmt->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
if (index >= TCM825X_NUM_CAPTURE_FORMATS)
return -EINVAL;
break;
default:
return -EINVAL;
}
fmt->flags = tcm825x_formats[index].flags;
strlcpy(fmt->description, tcm825x_formats[index].description,
sizeof(fmt->description));
fmt->pixelformat = tcm825x_formats[index].pixelformat;
return 0;
}
static int ioctl_try_fmt_cap(struct v4l2_int_device *s,
struct v4l2_format *f)
{
struct tcm825x_sensor *sensor = s->priv;
enum image_size isize;
int ifmt;
struct v4l2_pix_format *pix = &f->fmt.pix;
isize = tcm825x_find_size(s, pix->width, pix->height);
dev_dbg(&sensor->i2c_client->dev, "isize = %d num_capture = %lu\n",
isize, (unsigned long)TCM825X_NUM_CAPTURE_FORMATS);
pix->width = tcm825x_sizes[isize].width;
pix->height = tcm825x_sizes[isize].height;
for (ifmt = 0; ifmt < TCM825X_NUM_CAPTURE_FORMATS; ifmt++)
if (pix->pixelformat == tcm825x_formats[ifmt].pixelformat)
break;
if (ifmt == TCM825X_NUM_CAPTURE_FORMATS)
ifmt = 0; /* Default = YUV 4:2:2 */
pix->pixelformat = tcm825x_formats[ifmt].pixelformat;
pix->field = V4L2_FIELD_NONE;
pix->bytesperline = pix->width * TCM825X_BYTES_PER_PIXEL;
pix->sizeimage = pix->bytesperline * pix->height;
pix->priv = 0;
dev_dbg(&sensor->i2c_client->dev, "format = 0x%08x\n",
pix->pixelformat);
switch (pix->pixelformat) {
case V4L2_PIX_FMT_UYVY:
default:
pix->colorspace = V4L2_COLORSPACE_JPEG;
break;
case V4L2_PIX_FMT_RGB565:
pix->colorspace = V4L2_COLORSPACE_SRGB;
break;
}
return 0;
}
static int ioctl_s_fmt_cap(struct v4l2_int_device *s,
struct v4l2_format *f)
{
struct tcm825x_sensor *sensor = s->priv;
struct v4l2_pix_format *pix = &f->fmt.pix;
int rval;
rval = ioctl_try_fmt_cap(s, f);
if (rval)
return rval;
rval = tcm825x_configure(s);
sensor->pix = *pix;
return rval;
}
static int ioctl_g_fmt_cap(struct v4l2_int_device *s,
struct v4l2_format *f)
{
struct tcm825x_sensor *sensor = s->priv;
f->fmt.pix = sensor->pix;
return 0;
}
static int ioctl_g_parm(struct v4l2_int_device *s,
struct v4l2_streamparm *a)
{
struct tcm825x_sensor *sensor = s->priv;
struct v4l2_captureparm *cparm = &a->parm.capture;
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
memset(a, 0, sizeof(*a));
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
cparm->capability = V4L2_CAP_TIMEPERFRAME;
cparm->timeperframe = sensor->timeperframe;
return 0;
}
static int ioctl_s_parm(struct v4l2_int_device *s,
struct v4l2_streamparm *a)
{
struct tcm825x_sensor *sensor = s->priv;
struct v4l2_fract *timeperframe = &a->parm.capture.timeperframe;
u32 tgt_fps; /* target frames per secound */
int rval;
if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if ((timeperframe->numerator == 0)
|| (timeperframe->denominator == 0)) {
timeperframe->denominator = DEFAULT_FPS;
timeperframe->numerator = 1;
}
tgt_fps = timeperframe->denominator / timeperframe->numerator;
if (tgt_fps > MAX_FPS) {
timeperframe->denominator = MAX_FPS;
timeperframe->numerator = 1;
} else if (tgt_fps < MIN_FPS) {
timeperframe->denominator = MIN_FPS;
timeperframe->numerator = 1;
}
sensor->timeperframe = *timeperframe;
rval = tcm825x_configure(s);
return rval;
}
static int ioctl_s_power(struct v4l2_int_device *s, int on)
{
struct tcm825x_sensor *sensor = s->priv;
return sensor->platform_data->power_set(on);
}
/*
* Given the image capture format in pix, the nominal frame period in
* timeperframe, calculate the required xclk frequency.
*
* TCM825X input frequency characteristics are:
* Minimum 11.9 MHz, Typical 24.57 MHz and maximum 25/27 MHz
*/
static int ioctl_g_ifparm(struct v4l2_int_device *s, struct v4l2_ifparm *p)
{
struct tcm825x_sensor *sensor = s->priv;
struct v4l2_fract *timeperframe = &sensor->timeperframe;
u32 tgt_xclk; /* target xclk */
u32 tgt_fps; /* target frames per secound */
int rval;
rval = sensor->platform_data->ifparm(p);
if (rval)
return rval;
tgt_fps = timeperframe->denominator / timeperframe->numerator;
tgt_xclk = (tgt_fps <= HIGH_FPS_MODE_LOWER_LIMIT) ?
(2457 * tgt_fps) / MAX_HALF_FPS :
(2457 * tgt_fps) / MAX_FPS;
tgt_xclk *= 10000;
tgt_xclk = min(tgt_xclk, (u32)TCM825X_XCLK_MAX);
tgt_xclk = max(tgt_xclk, (u32)TCM825X_XCLK_MIN);
p->u.bt656.clock_curr = tgt_xclk;
return 0;
}
static int ioctl_g_needs_reset(struct v4l2_int_device *s, void *buf)
{
struct tcm825x_sensor *sensor = s->priv;
return sensor->platform_data->needs_reset(s, buf, &sensor->pix);
}
static int ioctl_reset(struct v4l2_int_device *s)
{
return -EBUSY;
}
static int ioctl_init(struct v4l2_int_device *s)
{
return tcm825x_configure(s);
}
static int ioctl_dev_exit(struct v4l2_int_device *s)
{
return 0;
}
static int ioctl_dev_init(struct v4l2_int_device *s)
{
struct tcm825x_sensor *sensor = s->priv;
int r;
r = tcm825x_read_reg(sensor->i2c_client, 0x01);
if (r < 0)
return r;
if (r == 0) {
dev_err(&sensor->i2c_client->dev, "device not detected\n");
return -EIO;
}
return 0;
}
static struct v4l2_int_ioctl_desc tcm825x_ioctl_desc[] = {
{ vidioc_int_dev_init_num,
(v4l2_int_ioctl_func *)ioctl_dev_init },
{ vidioc_int_dev_exit_num,
(v4l2_int_ioctl_func *)ioctl_dev_exit },
{ vidioc_int_s_power_num,
(v4l2_int_ioctl_func *)ioctl_s_power },
{ vidioc_int_g_ifparm_num,
(v4l2_int_ioctl_func *)ioctl_g_ifparm },
{ vidioc_int_g_needs_reset_num,
(v4l2_int_ioctl_func *)ioctl_g_needs_reset },
{ vidioc_int_reset_num,
(v4l2_int_ioctl_func *)ioctl_reset },
{ vidioc_int_init_num,
(v4l2_int_ioctl_func *)ioctl_init },
{ vidioc_int_enum_fmt_cap_num,
(v4l2_int_ioctl_func *)ioctl_enum_fmt_cap },
{ vidioc_int_try_fmt_cap_num,
(v4l2_int_ioctl_func *)ioctl_try_fmt_cap },
{ vidioc_int_g_fmt_cap_num,
(v4l2_int_ioctl_func *)ioctl_g_fmt_cap },
{ vidioc_int_s_fmt_cap_num,
(v4l2_int_ioctl_func *)ioctl_s_fmt_cap },
{ vidioc_int_g_parm_num,
(v4l2_int_ioctl_func *)ioctl_g_parm },
{ vidioc_int_s_parm_num,
(v4l2_int_ioctl_func *)ioctl_s_parm },
{ vidioc_int_queryctrl_num,
(v4l2_int_ioctl_func *)ioctl_queryctrl },
{ vidioc_int_g_ctrl_num,
(v4l2_int_ioctl_func *)ioctl_g_ctrl },
{ vidioc_int_s_ctrl_num,
(v4l2_int_ioctl_func *)ioctl_s_ctrl },
};
static struct v4l2_int_slave tcm825x_slave = {
.ioctls = tcm825x_ioctl_desc,
.num_ioctls = ARRAY_SIZE(tcm825x_ioctl_desc),
};
static struct tcm825x_sensor tcm825x;
static struct v4l2_int_device tcm825x_int_device = {
.module = THIS_MODULE,
.name = TCM825X_NAME,
.priv = &tcm825x,
.type = v4l2_int_type_slave,
.u = {
.slave = &tcm825x_slave,
},
};
static int tcm825x_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
struct tcm825x_sensor *sensor = &tcm825x;
if (i2c_get_clientdata(client))
return -EBUSY;
sensor->platform_data = client->dev.platform_data;
if (sensor->platform_data == NULL
|| !sensor->platform_data->is_okay())
return -ENODEV;
sensor->v4l2_int_device = &tcm825x_int_device;
sensor->i2c_client = client;
i2c_set_clientdata(client, sensor);
/* Make the default capture format QVGA RGB565 */
sensor->pix.width = tcm825x_sizes[QVGA].width;
sensor->pix.height = tcm825x_sizes[QVGA].height;
sensor->pix.pixelformat = V4L2_PIX_FMT_RGB565;
return v4l2_int_device_register(sensor->v4l2_int_device);
}
static int tcm825x_remove(struct i2c_client *client)
{
struct tcm825x_sensor *sensor = i2c_get_clientdata(client);
if (!client->adapter)
return -ENODEV; /* our client isn't attached */
v4l2_int_device_unregister(sensor->v4l2_int_device);
return 0;
}
static const struct i2c_device_id tcm825x_id[] = {
{ "tcm825x", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tcm825x_id);
static struct i2c_driver tcm825x_i2c_driver = {
.driver = {
.name = TCM825X_NAME,
},
.probe = tcm825x_probe,
.remove = tcm825x_remove,
.id_table = tcm825x_id,
};
static struct tcm825x_sensor tcm825x = {
.timeperframe = {
.numerator = 1,
.denominator = DEFAULT_FPS,
},
};
static int __init tcm825x_init(void)
{
int rval;
rval = i2c_add_driver(&tcm825x_i2c_driver);
if (rval)
printk(KERN_INFO "%s: failed registering " TCM825X_NAME "\n",
__func__);
return rval;
}
static void __exit tcm825x_exit(void)
{
i2c_del_driver(&tcm825x_i2c_driver);
}
/*
* FIXME: Menelaus isn't ready (?) at module_init stage, so use
* late_initcall for now.
*/
late_initcall(tcm825x_init);
module_exit(tcm825x_exit);
MODULE_AUTHOR("Sakari Ailus <sakari.ailus@nokia.com>");
MODULE_DESCRIPTION("TCM825x camera sensor driver");
MODULE_LICENSE("GPL");
View Git Blame Copy Permalink