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path: root/drivers/media/video/indycam.c
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Diffstat (limited to 'drivers/media/video/indycam.c')
-rw-r--r--drivers/media/video/indycam.c128
1 files changed, 71 insertions, 57 deletions
diff --git a/drivers/media/video/indycam.c b/drivers/media/video/indycam.c
index 54099e303c8..eb5078c07a3 100644
--- a/drivers/media/video/indycam.c
+++ b/drivers/media/video/indycam.c
@@ -22,7 +22,8 @@
/* IndyCam decodes stream of photons into digital image representation ;-) */
#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 "indycam.h"
@@ -49,10 +50,15 @@ I2C_CLIENT_INSMOD;
#endif
struct indycam {
- struct i2c_client *client;
+ struct v4l2_subdev sd;
u8 version;
};
+static inline struct indycam *to_indycam(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct indycam, sd);
+}
+
static const u8 initseq[] = {
INDYCAM_CONTROL_AGCENA, /* INDYCAM_CONTROL */
INDYCAM_SHUTTER_60, /* INDYCAM_SHUTTER */
@@ -66,8 +72,9 @@ static const u8 initseq[] = {
/* IndyCam register handling */
-static int indycam_read_reg(struct i2c_client *client, u8 reg, u8 *value)
+static int indycam_read_reg(struct v4l2_subdev *sd, u8 reg, u8 *value)
{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
if (reg == INDYCAM_REG_RESET) {
@@ -90,12 +97,12 @@ static int indycam_read_reg(struct i2c_client *client, u8 reg, u8 *value)
return 0;
}
-static int indycam_write_reg(struct i2c_client *client, u8 reg, u8 value)
+static int indycam_write_reg(struct v4l2_subdev *sd, u8 reg, u8 value)
{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
int err;
- if ((reg == INDYCAM_REG_BRIGHTNESS)
- || (reg == INDYCAM_REG_VERSION)) {
+ if (reg == INDYCAM_REG_BRIGHTNESS || reg == INDYCAM_REG_VERSION) {
dprintk("indycam_write_reg(): "
"skipping read-only register %d\n", reg);
return 0;
@@ -111,13 +118,13 @@ static int indycam_write_reg(struct i2c_client *client, u8 reg, u8 value)
return err;
}
-static int indycam_write_block(struct i2c_client *client, u8 reg,
+static int indycam_write_block(struct v4l2_subdev *sd, u8 reg,
u8 length, u8 *data)
{
int i, err;
for (i = 0; i < length; i++) {
- err = indycam_write_reg(client, reg + i, data[i]);
+ err = indycam_write_reg(sd, reg + i, data[i]);
if (err)
return err;
}
@@ -128,29 +135,28 @@ static int indycam_write_block(struct i2c_client *client, u8 reg,
/* Helper functions */
#ifdef INDYCAM_DEBUG
-static void indycam_regdump_debug(struct i2c_client *client)
+static void indycam_regdump_debug(struct v4l2_subdev *sd)
{
int i;
u8 val;
for (i = 0; i < 9; i++) {
- indycam_read_reg(client, i, &val);
+ indycam_read_reg(sd, i, &val);
dprintk("Reg %d = 0x%02x\n", i, val);
}
}
#endif
-static int indycam_get_control(struct i2c_client *client,
- struct v4l2_control *ctrl)
+static int indycam_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
- struct indycam *camera = i2c_get_clientdata(client);
+ struct indycam *camera = to_indycam(sd);
u8 reg;
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_AUTOGAIN:
case V4L2_CID_AUTO_WHITE_BALANCE:
- ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, &reg);
+ ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
if (ret)
return -EIO;
if (ctrl->id == V4L2_CID_AUTOGAIN)
@@ -161,38 +167,38 @@ static int indycam_get_control(struct i2c_client *client,
? 1 : 0;
break;
case V4L2_CID_EXPOSURE:
- ret = indycam_read_reg(client, INDYCAM_REG_SHUTTER, &reg);
+ ret = indycam_read_reg(sd, INDYCAM_REG_SHUTTER, &reg);
if (ret)
return -EIO;
ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
break;
case V4L2_CID_GAIN:
- ret = indycam_read_reg(client, INDYCAM_REG_GAIN, &reg);
+ ret = indycam_read_reg(sd, INDYCAM_REG_GAIN, &reg);
if (ret)
return -EIO;
ctrl->value = (s32)reg;
break;
case V4L2_CID_RED_BALANCE:
- ret = indycam_read_reg(client, INDYCAM_REG_RED_BALANCE, &reg);
+ ret = indycam_read_reg(sd, INDYCAM_REG_RED_BALANCE, &reg);
if (ret)
return -EIO;
ctrl->value = (s32)reg;
break;
case V4L2_CID_BLUE_BALANCE:
- ret = indycam_read_reg(client, INDYCAM_REG_BLUE_BALANCE, &reg);
+ ret = indycam_read_reg(sd, INDYCAM_REG_BLUE_BALANCE, &reg);
if (ret)
return -EIO;
ctrl->value = (s32)reg;
break;
case INDYCAM_CONTROL_RED_SATURATION:
- ret = indycam_read_reg(client,
+ ret = indycam_read_reg(sd,
INDYCAM_REG_RED_SATURATION, &reg);
if (ret)
return -EIO;
ctrl->value = (s32)reg;
break;
case INDYCAM_CONTROL_BLUE_SATURATION:
- ret = indycam_read_reg(client,
+ ret = indycam_read_reg(sd,
INDYCAM_REG_BLUE_SATURATION, &reg);
if (ret)
return -EIO;
@@ -200,7 +206,7 @@ static int indycam_get_control(struct i2c_client *client,
break;
case V4L2_CID_GAMMA:
if (camera->version == CAMERA_VERSION_MOOSE) {
- ret = indycam_read_reg(client,
+ ret = indycam_read_reg(sd,
INDYCAM_REG_GAMMA, &reg);
if (ret)
return -EIO;
@@ -216,17 +222,16 @@ static int indycam_get_control(struct i2c_client *client,
return ret;
}
-static int indycam_set_control(struct i2c_client *client,
- struct v4l2_control *ctrl)
+static int indycam_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
- struct indycam *camera = i2c_get_clientdata(client);
+ struct indycam *camera = to_indycam(sd);
u8 reg;
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_AUTOGAIN:
case V4L2_CID_AUTO_WHITE_BALANCE:
- ret = indycam_read_reg(client, INDYCAM_REG_CONTROL, &reg);
+ ret = indycam_read_reg(sd, INDYCAM_REG_CONTROL, &reg);
if (ret)
break;
@@ -242,34 +247,34 @@ static int indycam_set_control(struct i2c_client *client,
reg &= ~INDYCAM_CONTROL_AWBCTL;
}
- ret = indycam_write_reg(client, INDYCAM_REG_CONTROL, reg);
+ ret = indycam_write_reg(sd, INDYCAM_REG_CONTROL, reg);
break;
case V4L2_CID_EXPOSURE:
reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1);
- ret = indycam_write_reg(client, INDYCAM_REG_SHUTTER, reg);
+ ret = indycam_write_reg(sd, INDYCAM_REG_SHUTTER, reg);
break;
case V4L2_CID_GAIN:
- ret = indycam_write_reg(client, INDYCAM_REG_GAIN, ctrl->value);
+ ret = indycam_write_reg(sd, INDYCAM_REG_GAIN, ctrl->value);
break;
case V4L2_CID_RED_BALANCE:
- ret = indycam_write_reg(client, INDYCAM_REG_RED_BALANCE,
+ ret = indycam_write_reg(sd, INDYCAM_REG_RED_BALANCE,
ctrl->value);
break;
case V4L2_CID_BLUE_BALANCE:
- ret = indycam_write_reg(client, INDYCAM_REG_BLUE_BALANCE,
+ ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_BALANCE,
ctrl->value);
break;
case INDYCAM_CONTROL_RED_SATURATION:
- ret = indycam_write_reg(client, INDYCAM_REG_RED_SATURATION,
+ ret = indycam_write_reg(sd, INDYCAM_REG_RED_SATURATION,
ctrl->value);
break;
case INDYCAM_CONTROL_BLUE_SATURATION:
- ret = indycam_write_reg(client, INDYCAM_REG_BLUE_SATURATION,
+ ret = indycam_write_reg(sd, INDYCAM_REG_BLUE_SATURATION,
ctrl->value);
break;
case V4L2_CID_GAMMA:
if (camera->version == CAMERA_VERSION_MOOSE) {
- ret = indycam_write_reg(client, INDYCAM_REG_GAMMA,
+ ret = indycam_write_reg(sd, INDYCAM_REG_GAMMA,
ctrl->value);
}
break;
@@ -282,30 +287,39 @@ static int indycam_set_control(struct i2c_client *client,
/* I2C-interface */
-static int indycam_command(struct i2c_client *client, unsigned int cmd,
- void *arg)
+static int indycam_g_chip_ident(struct v4l2_subdev *sd,
+ struct v4l2_dbg_chip_ident *chip)
{
- /* The old video_decoder interface just isn't enough,
- * so we'll use some custom commands. */
- switch (cmd) {
- case VIDIOC_G_CTRL:
- return indycam_get_control(client, arg);
-
- case VIDIOC_S_CTRL:
- return indycam_set_control(client, arg);
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+ struct indycam *camera = to_indycam(sd);
- default:
- return -EINVAL;
- }
+ return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_INDYCAM,
+ camera->version);
+}
- return 0;
+static int indycam_command(struct i2c_client *client, unsigned cmd, void *arg)
+{
+ return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg);
}
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_subdev_core_ops indycam_core_ops = {
+ .g_chip_ident = indycam_g_chip_ident,
+ .g_ctrl = indycam_g_ctrl,
+ .s_ctrl = indycam_s_ctrl,
+};
+
+static const struct v4l2_subdev_ops indycam_ops = {
+ .core = &indycam_core_ops,
+};
+
static int indycam_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int err = 0;
struct indycam *camera;
+ struct v4l2_subdev *sd;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
@@ -314,9 +328,8 @@ static int indycam_probe(struct i2c_client *client,
if (!camera)
return -ENOMEM;
- i2c_set_clientdata(client, camera);
-
- camera->client = client;
+ sd = &camera->sd;
+ v4l2_i2c_subdev_init(sd, client, &indycam_ops);
camera->version = i2c_smbus_read_byte_data(client,
INDYCAM_REG_VERSION);
@@ -330,20 +343,20 @@ static int indycam_probe(struct i2c_client *client,
INDYCAM_VERSION_MAJOR(camera->version),
INDYCAM_VERSION_MINOR(camera->version));
- indycam_regdump(client);
+ indycam_regdump(sd);
// initialize
- err = indycam_write_block(client, 0, sizeof(initseq), (u8 *)&initseq);
+ err = indycam_write_block(sd, 0, sizeof(initseq), (u8 *)&initseq);
if (err) {
printk(KERN_ERR "IndyCam initialization failed\n");
kfree(camera);
return -EIO;
}
- indycam_regdump(client);
+ indycam_regdump(sd);
// white balance
- err = indycam_write_reg(client, INDYCAM_REG_CONTROL,
+ err = indycam_write_reg(sd, INDYCAM_REG_CONTROL,
INDYCAM_CONTROL_AGCENA | INDYCAM_CONTROL_AWBCTL);
if (err) {
printk(KERN_ERR "IndyCam: White balancing camera failed\n");
@@ -351,7 +364,7 @@ static int indycam_probe(struct i2c_client *client,
return -EIO;
}
- indycam_regdump(client);
+ indycam_regdump(sd);
printk(KERN_INFO "IndyCam initialized\n");
@@ -360,9 +373,10 @@ static int indycam_probe(struct i2c_client *client,
static int indycam_remove(struct i2c_client *client)
{
- struct indycam *camera = i2c_get_clientdata(client);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
- kfree(camera);
+ v4l2_device_unregister_subdev(sd);
+ kfree(to_indycam(sd));
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-23 00:14:23 +0000