#include <linux/videodev2.h>
#include <linux/i2c.h>
-#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv-legacy.h>
#include "saa7191.h"
#define SAA7191_SYNC_DELAY 100 /* milliseconds */
struct saa7191 {
- struct i2c_client *client;
+ struct v4l2_subdev sd;
/* the register values are stored here as the actual
* I2C-registers are write-only */
v4l2_std_id norm;
};
+static inline struct saa7191 *to_saa7191(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct saa7191, sd);
+}
+
static const u8 initseq[] = {
0, /* Subaddress */
/* SAA7191 register handling */
-static u8 saa7191_read_reg(struct i2c_client *client,
- u8 reg)
+static u8 saa7191_read_reg(struct v4l2_subdev *sd, u8 reg)
{
- return ((struct saa7191 *)i2c_get_clientdata(client))->reg[reg];
+ return to_saa7191(sd)->reg[reg];
}
-static int saa7191_read_status(struct i2c_client *client,
- u8 *value)
+static int saa7191_read_status(struct v4l2_subdev *sd, u8 *value)
{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
ret = i2c_master_recv(client, value, 1);
}
-static int saa7191_write_reg(struct i2c_client *client, u8 reg,
- u8 value)
+static int saa7191_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
{
- ((struct saa7191 *)i2c_get_clientdata(client))->reg[reg] = value;
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ to_saa7191(sd)->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
/* the first byte of data must be the first subaddress number (register) */
-static int saa7191_write_block(struct i2c_client *client,
+static int saa7191_write_block(struct v4l2_subdev *sd,
u8 length, const u8 *data)
{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct saa7191 *decoder = to_saa7191(sd);
int i;
int ret;
- struct saa7191 *decoder = (struct saa7191 *)i2c_get_clientdata(client);
for (i = 0; i < (length - 1); i++) {
decoder->reg[data[0] + i] = data[i + 1];
}
/* Helper functions */
-static int saa7191_set_input(struct i2c_client *client, int input)
+static int saa7191_s_routing(struct v4l2_subdev *sd,
+ const struct v4l2_routing *route)
{
- struct saa7191 *decoder = i2c_get_clientdata(client);
- u8 luma = saa7191_read_reg(client, SAA7191_REG_LUMA);
- u8 iock = saa7191_read_reg(client, SAA7191_REG_IOCK);
+ struct saa7191 *decoder = to_saa7191(sd);
+ u8 luma = saa7191_read_reg(sd, SAA7191_REG_LUMA);
+ u8 iock = saa7191_read_reg(sd, SAA7191_REG_IOCK);
int err;
- switch (input) {
+ switch (route->input) {
case SAA7191_INPUT_COMPOSITE: /* Set Composite input */
iock &= ~(SAA7191_IOCK_CHRS | SAA7191_IOCK_GPSW1
| SAA7191_IOCK_GPSW2);
return -EINVAL;
}
- err = saa7191_write_reg(client, SAA7191_REG_LUMA, luma);
+ err = saa7191_write_reg(sd, SAA7191_REG_LUMA, luma);
if (err)
return -EIO;
- err = saa7191_write_reg(client, SAA7191_REG_IOCK, iock);
+ err = saa7191_write_reg(sd, SAA7191_REG_IOCK, iock);
if (err)
return -EIO;
- decoder->input = input;
+ decoder->input = route->input;
return 0;
}
-static int saa7191_set_norm(struct i2c_client *client, v4l2_std_id norm)
+static int saa7191_s_std(struct v4l2_subdev *sd, v4l2_std_id norm)
{
- struct saa7191 *decoder = i2c_get_clientdata(client);
- u8 stdc = saa7191_read_reg(client, SAA7191_REG_STDC);
- u8 ctl3 = saa7191_read_reg(client, SAA7191_REG_CTL3);
- u8 chcv = saa7191_read_reg(client, SAA7191_REG_CHCV);
+ struct saa7191 *decoder = to_saa7191(sd);
+ u8 stdc = saa7191_read_reg(sd, SAA7191_REG_STDC);
+ u8 ctl3 = saa7191_read_reg(sd, SAA7191_REG_CTL3);
+ u8 chcv = saa7191_read_reg(sd, SAA7191_REG_CHCV);
int err;
if (norm & V4L2_STD_PAL) {
return -EINVAL;
}
- err = saa7191_write_reg(client, SAA7191_REG_CTL3, ctl3);
+ err = saa7191_write_reg(sd, SAA7191_REG_CTL3, ctl3);
if (err)
return -EIO;
- err = saa7191_write_reg(client, SAA7191_REG_STDC, stdc);
+ err = saa7191_write_reg(sd, SAA7191_REG_STDC, stdc);
if (err)
return -EIO;
- err = saa7191_write_reg(client, SAA7191_REG_CHCV, chcv);
+ err = saa7191_write_reg(sd, SAA7191_REG_CHCV, chcv);
if (err)
return -EIO;
return 0;
}
-static int saa7191_wait_for_signal(struct i2c_client *client, u8 *status)
+static int saa7191_wait_for_signal(struct v4l2_subdev *sd, u8 *status)
{
int i = 0;
dprintk("Checking for signal...\n");
for (i = 0; i < SAA7191_SYNC_COUNT; i++) {
- if (saa7191_read_status(client, status))
+ if (saa7191_read_status(sd, status))
return -EIO;
if (((*status) & SAA7191_STATUS_HLCK) == 0) {
return -EBUSY;
}
-static int saa7191_autodetect_norm_extended(struct i2c_client *client,
- v4l2_std_id *norm)
+static int saa7191_querystd(struct v4l2_subdev *sd, v4l2_std_id *norm)
{
- struct saa7191 *decoder = i2c_get_clientdata(client);
- u8 stdc = saa7191_read_reg(client, SAA7191_REG_STDC);
- u8 ctl3 = saa7191_read_reg(client, SAA7191_REG_CTL3);
+ struct saa7191 *decoder = to_saa7191(sd);
+ u8 stdc = saa7191_read_reg(sd, SAA7191_REG_STDC);
+ u8 ctl3 = saa7191_read_reg(sd, SAA7191_REG_CTL3);
u8 status;
v4l2_std_id old_norm = decoder->norm;
int err = 0;
stdc &= ~SAA7191_STDC_SECS;
ctl3 &= ~(SAA7191_CTL3_FSEL);
- err = saa7191_write_reg(client, SAA7191_REG_STDC, stdc);
+ err = saa7191_write_reg(sd, SAA7191_REG_STDC, stdc);
if (err) {
err = -EIO;
goto out;
}
- err = saa7191_write_reg(client, SAA7191_REG_CTL3, ctl3);
+ err = saa7191_write_reg(sd, SAA7191_REG_CTL3, ctl3);
if (err) {
err = -EIO;
goto out;
}
ctl3 |= SAA7191_CTL3_AUFD;
- err = saa7191_write_reg(client, SAA7191_REG_CTL3, ctl3);
+ err = saa7191_write_reg(sd, SAA7191_REG_CTL3, ctl3);
if (err) {
err = -EIO;
goto out;
msleep(SAA7191_SYNC_DELAY);
- err = saa7191_wait_for_signal(client, &status);
+ err = saa7191_wait_for_signal(sd, &status);
if (err)
goto out;
dprintk("50Hz signal: Trying PAL...\n");
/* try PAL first */
- err = saa7191_set_norm(client, V4L2_STD_PAL);
+ err = saa7191_s_std(sd, V4L2_STD_PAL);
if (err)
goto out;
msleep(SAA7191_SYNC_DELAY);
- err = saa7191_wait_for_signal(client, &status);
+ err = saa7191_wait_for_signal(sd, &status);
if (err)
goto out;
/* not 50Hz ? */
if (status & SAA7191_STATUS_FIDT) {
dprintk("No 50Hz signal\n");
- saa7191_set_norm(client, old_norm);
+ saa7191_s_std(sd, old_norm);
return -EAGAIN;
}
if (status & SAA7191_STATUS_CODE) {
dprintk("PAL\n");
*norm = V4L2_STD_PAL;
- return saa7191_set_norm(client, old_norm);
+ return saa7191_s_std(sd, old_norm);
}
dprintk("No color detected with PAL - Trying SECAM...\n");
/* no color detected ? -> try SECAM */
- err = saa7191_set_norm(client, V4L2_STD_SECAM);
+ err = saa7191_s_std(sd, V4L2_STD_SECAM);
if (err)
goto out;
msleep(SAA7191_SYNC_DELAY);
- err = saa7191_wait_for_signal(client, &status);
+ err = saa7191_wait_for_signal(sd, &status);
if (err)
goto out;
/* Color detected -> SECAM */
dprintk("SECAM\n");
*norm = V4L2_STD_SECAM;
- return saa7191_set_norm(client, old_norm);
+ return saa7191_s_std(sd, old_norm);
}
dprintk("No color detected with SECAM - Going back to PAL.\n");
out:
- return saa7191_set_norm(client, old_norm);
+ return saa7191_s_std(sd, old_norm);
}
-static int saa7191_autodetect_norm(struct i2c_client *client)
+static int saa7191_autodetect_norm(struct v4l2_subdev *sd)
{
u8 status;
dprintk("Reading status...\n");
- if (saa7191_read_status(client, &status))
+ if (saa7191_read_status(sd, &status))
return -EIO;
dprintk("Checking for signal...\n");
if (status & SAA7191_STATUS_FIDT) {
/* 60hz signal -> NTSC */
dprintk("NTSC\n");
- return saa7191_set_norm(client, V4L2_STD_NTSC);
+ return saa7191_s_std(sd, V4L2_STD_NTSC);
} else {
/* 50hz signal -> PAL */
dprintk("PAL\n");
- return saa7191_set_norm(client, V4L2_STD_PAL);
+ return saa7191_s_std(sd, V4L2_STD_PAL);
}
}
-static int saa7191_get_control(struct i2c_client *client,
- struct v4l2_control *ctrl)
+static int saa7191_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
u8 reg;
int ret = 0;
case SAA7191_CONTROL_BANDPASS:
case SAA7191_CONTROL_BANDPASS_WEIGHT:
case SAA7191_CONTROL_CORING:
- reg = saa7191_read_reg(client, SAA7191_REG_LUMA);
+ reg = saa7191_read_reg(sd, SAA7191_REG_LUMA);
switch (ctrl->id) {
case SAA7191_CONTROL_BANDPASS:
ctrl->value = ((s32)reg & SAA7191_LUMA_BPSS_MASK)
break;
case SAA7191_CONTROL_FORCE_COLOUR:
case SAA7191_CONTROL_CHROMA_GAIN:
- reg = saa7191_read_reg(client, SAA7191_REG_GAIN);
+ reg = saa7191_read_reg(sd, SAA7191_REG_GAIN);
if (ctrl->id == SAA7191_CONTROL_FORCE_COLOUR)
ctrl->value = ((s32)reg & SAA7191_GAIN_COLO) ? 1 : 0;
else
>> SAA7191_GAIN_LFIS_SHIFT;
break;
case V4L2_CID_HUE:
- reg = saa7191_read_reg(client, SAA7191_REG_HUEC);
+ reg = saa7191_read_reg(sd, SAA7191_REG_HUEC);
if (reg < 0x80)
reg += 0x80;
else
ctrl->value = (s32)reg;
break;
case SAA7191_CONTROL_VTRC:
- reg = saa7191_read_reg(client, SAA7191_REG_STDC);
+ reg = saa7191_read_reg(sd, SAA7191_REG_STDC);
ctrl->value = ((s32)reg & SAA7191_STDC_VTRC) ? 1 : 0;
break;
case SAA7191_CONTROL_LUMA_DELAY:
- reg = saa7191_read_reg(client, SAA7191_REG_CTL3);
+ reg = saa7191_read_reg(sd, SAA7191_REG_CTL3);
ctrl->value = ((s32)reg & SAA7191_CTL3_YDEL_MASK)
>> SAA7191_CTL3_YDEL_SHIFT;
if (ctrl->value >= 4)
ctrl->value -= 8;
break;
case SAA7191_CONTROL_VNR:
- reg = saa7191_read_reg(client, SAA7191_REG_CTL4);
+ reg = saa7191_read_reg(sd, SAA7191_REG_CTL4);
ctrl->value = ((s32)reg & SAA7191_CTL4_VNOI_MASK)
>> SAA7191_CTL4_VNOI_SHIFT;
break;
return ret;
}
-static int saa7191_set_control(struct i2c_client *client,
- struct v4l2_control *ctrl)
+static int saa7191_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
u8 reg;
int ret = 0;
case SAA7191_CONTROL_BANDPASS:
case SAA7191_CONTROL_BANDPASS_WEIGHT:
case SAA7191_CONTROL_CORING:
- reg = saa7191_read_reg(client, SAA7191_REG_LUMA);
+ reg = saa7191_read_reg(sd, SAA7191_REG_LUMA);
switch (ctrl->id) {
case SAA7191_CONTROL_BANDPASS:
reg &= ~SAA7191_LUMA_BPSS_MASK;
& SAA7191_LUMA_CORI_MASK;
break;
}
- ret = saa7191_write_reg(client, SAA7191_REG_LUMA, reg);
+ ret = saa7191_write_reg(sd, SAA7191_REG_LUMA, reg);
break;
case SAA7191_CONTROL_FORCE_COLOUR:
case SAA7191_CONTROL_CHROMA_GAIN:
- reg = saa7191_read_reg(client, SAA7191_REG_GAIN);
+ reg = saa7191_read_reg(sd, SAA7191_REG_GAIN);
if (ctrl->id == SAA7191_CONTROL_FORCE_COLOUR) {
if (ctrl->value)
reg |= SAA7191_GAIN_COLO;
reg |= (ctrl->value << SAA7191_GAIN_LFIS_SHIFT)
& SAA7191_GAIN_LFIS_MASK;
}
- ret = saa7191_write_reg(client, SAA7191_REG_GAIN, reg);
+ ret = saa7191_write_reg(sd, SAA7191_REG_GAIN, reg);
break;
case V4L2_CID_HUE:
reg = ctrl->value & 0xff;
reg += 0x80;
else
reg -= 0x80;
- ret = saa7191_write_reg(client, SAA7191_REG_HUEC, reg);
+ ret = saa7191_write_reg(sd, SAA7191_REG_HUEC, reg);
break;
case SAA7191_CONTROL_VTRC:
- reg = saa7191_read_reg(client, SAA7191_REG_STDC);
+ reg = saa7191_read_reg(sd, SAA7191_REG_STDC);
if (ctrl->value)
reg |= SAA7191_STDC_VTRC;
else
reg &= ~SAA7191_STDC_VTRC;
- ret = saa7191_write_reg(client, SAA7191_REG_STDC, reg);
+ ret = saa7191_write_reg(sd, SAA7191_REG_STDC, reg);
break;
case SAA7191_CONTROL_LUMA_DELAY: {
s32 value = ctrl->value;
if (value < 0)
value += 8;
- reg = saa7191_read_reg(client, SAA7191_REG_CTL3);
+ reg = saa7191_read_reg(sd, SAA7191_REG_CTL3);
reg &= ~SAA7191_CTL3_YDEL_MASK;
reg |= (value << SAA7191_CTL3_YDEL_SHIFT)
& SAA7191_CTL3_YDEL_MASK;
- ret = saa7191_write_reg(client, SAA7191_REG_CTL3, reg);
+ ret = saa7191_write_reg(sd, SAA7191_REG_CTL3, reg);
break;
}
case SAA7191_CONTROL_VNR:
- reg = saa7191_read_reg(client, SAA7191_REG_CTL4);
+ reg = saa7191_read_reg(sd, SAA7191_REG_CTL4);
reg &= ~SAA7191_CTL4_VNOI_MASK;
reg |= (ctrl->value << SAA7191_CTL4_VNOI_SHIFT)
& SAA7191_CTL4_VNOI_MASK;
- ret = saa7191_write_reg(client, SAA7191_REG_CTL4, reg);
+ ret = saa7191_write_reg(sd, SAA7191_REG_CTL4, reg);
break;
default:
ret = -EINVAL;
/* I2C-interface */
-static int saa7191_command(struct i2c_client *client, unsigned int cmd,
- void *arg)
+static int saa7191_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
- switch (cmd) {
- case VIDIOC_INT_G_INPUT_STATUS: {
- u32 *iarg = arg;
- u8 status;
- int res = V4L2_IN_ST_NO_SIGNAL;
+ u8 status_reg;
+ int res = V4L2_IN_ST_NO_SIGNAL;
- if (saa7191_read_status(client, &status))
- return -EIO;
- if ((status & SAA7191_STATUS_HLCK) == 0)
- res = 0;
- if (!(status & SAA7191_STATUS_CODE))
- res |= V4L2_IN_ST_NO_COLOR;
- *iarg = res;
- break;
- }
+ if (saa7191_read_status(sd, &status_reg))
+ return -EIO;
+ if ((status_reg & SAA7191_STATUS_HLCK) == 0)
+ res = 0;
+ if (!(status_reg & SAA7191_STATUS_CODE))
+ res |= V4L2_IN_ST_NO_COLOR;
+ *status = res;
+ return 0;
+}
- case VIDIOC_QUERYSTD:
- return saa7191_autodetect_norm_extended(client, arg);
- case VIDIOC_S_STD: {
- v4l2_std_id *istd = arg;
+static int saa7191_g_chip_ident(struct v4l2_subdev *sd,
+ struct v4l2_dbg_chip_ident *chip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
- return saa7191_set_norm(client, *istd);
- }
- case VIDIOC_INT_S_VIDEO_ROUTING: {
- struct v4l2_routing *route = arg;
+ return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7191, 0);
+}
- return saa7191_set_input(client, route->input);
- }
+static int saa7191_command(struct i2c_client *client, unsigned cmd, void *arg)
+{
+ return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
+}
- case VIDIOC_G_CTRL:
- return saa7191_get_control(client, arg);
+/* ----------------------------------------------------------------------- */
- case VIDIOC_S_CTRL:
- return saa7191_set_control(client, arg);
+static const struct v4l2_subdev_core_ops saa7191_core_ops = {
+ .g_chip_ident = saa7191_g_chip_ident,
+ .g_ctrl = saa7191_g_ctrl,
+ .s_ctrl = saa7191_s_ctrl,
+};
- default:
- return -EINVAL;
- }
+static const struct v4l2_subdev_tuner_ops saa7191_tuner_ops = {
+ .s_std = saa7191_s_std,
+};
- return 0;
-}
+static const struct v4l2_subdev_video_ops saa7191_video_ops = {
+ .s_routing = saa7191_s_routing,
+ .querystd = saa7191_querystd,
+ .g_input_status = saa7191_g_input_status,
+};
+
+static const struct v4l2_subdev_ops saa7191_ops = {
+ .core = &saa7191_core_ops,
+ .video = &saa7191_video_ops,
+};
static int saa7191_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int err = 0;
struct saa7191 *decoder;
+ struct v4l2_subdev *sd;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
if (!decoder)
return -ENOMEM;
- i2c_set_clientdata(client, decoder);
-
- decoder->client = client;
+ sd = &decoder->sd;
+ v4l2_i2c_subdev_init(sd, client, &saa7191_ops);
- err = saa7191_write_block(client, sizeof(initseq), initseq);
+ err = saa7191_write_block(sd, sizeof(initseq), initseq);
if (err) {
printk(KERN_ERR "SAA7191 initialization failed\n");
kfree(decoder);
decoder->input = SAA7191_INPUT_COMPOSITE;
decoder->norm = V4L2_STD_PAL;
- err = saa7191_autodetect_norm(client);
+ err = saa7191_autodetect_norm(sd);
if (err && (err != -EBUSY))
printk(KERN_ERR "SAA7191: Signal auto-detection failed\n");
static int saa7191_remove(struct i2c_client *client)
{
- struct saa7191 *decoder = i2c_get_clientdata(client);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
- kfree(decoder);
+ v4l2_device_unregister_subdev(sd);
+ kfree(to_saa7191(sd));
return 0;
}
projects / platform / kernel / linux-rpi.git / commitdiff