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V4L/DVB (10862): indycam: convert to v4l2_subdev

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Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
2009-02-13 19:38:10 -03:00
committed by Mauro Carvalho Chehab
parent cf4e9484f4
commit 2b80a19181
2 changed files with 75 additions and 58 deletions
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126
drivers/media/video/indycam.c
View File

@@ -22,7 +22,8 @@
/* IndyCam decodes stream of photons into digital image representation ;-) */ /* IndyCam decodes stream of photons into digital image representation ;-) */
#include <linux/videodev2.h> #include <linux/videodev2.h>
#include <linux/i2c.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 <media/v4l2-i2c-drv-legacy.h>
#include "indycam.h" #include "indycam.h"
@@ -49,10 +50,15 @@ I2C_CLIENT_INSMOD;
#endif #endif
struct indycam { struct indycam {
struct i2c_client *client; struct v4l2_subdev sd;
u8 version; u8 version;
}; };
static inline struct indycam *to_indycam(struct v4l2_subdev *sd)
{
return container_of(sd, struct indycam, sd);
}
static const u8 initseq[] = { static const u8 initseq[] = {
INDYCAM_CONTROL_AGCENA, /* INDYCAM_CONTROL */ INDYCAM_CONTROL_AGCENA, /* INDYCAM_CONTROL */
INDYCAM_SHUTTER_60, /* INDYCAM_SHUTTER */ INDYCAM_SHUTTER_60, /* INDYCAM_SHUTTER */
@@ -66,8 +72,9 @@ static const u8 initseq[] = {
/* IndyCam register handling */ /* 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; int ret;
if (reg == INDYCAM_REG_RESET) { if (reg == INDYCAM_REG_RESET) {
@@ -90,12 +97,12 @@ static int indycam_read_reg(struct i2c_client *client, u8 reg, u8 *value)
return 0; 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; int err;
if ((reg == INDYCAM_REG_BRIGHTNESS) if (reg == INDYCAM_REG_BRIGHTNESS || reg == INDYCAM_REG_VERSION) {
|| (reg == INDYCAM_REG_VERSION)) {
dprintk("indycam_write_reg(): " dprintk("indycam_write_reg(): "
"skipping read-only register %d\n", reg); "skipping read-only register %d\n", reg);
return 0; return 0;
@@ -111,13 +118,13 @@ static int indycam_write_reg(struct i2c_client *client, u8 reg, u8 value)
return err; 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) u8 length, u8 *data)
{ {
int i, err; int i, err;
for (i = 0; i < length; i++) { 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) if (err)
return err; return err;
} }
@@ -128,29 +135,28 @@ static int indycam_write_block(struct i2c_client *client, u8 reg,
/* Helper functions */ /* Helper functions */
#ifdef INDYCAM_DEBUG #ifdef INDYCAM_DEBUG
static void indycam_regdump_debug(struct i2c_client *client) static void indycam_regdump_debug(struct v4l2_subdev *sd)
{ {
int i; int i;
u8 val; u8 val;
for (i = 0; i < 9; i++) { 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); dprintk("Reg %d = 0x%02x\n", i, val);
} }
} }
#endif #endif
static int indycam_get_control(struct i2c_client *client, static int indycam_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
struct v4l2_control *ctrl)
{ {
struct indycam *camera = i2c_get_clientdata(client); struct indycam *camera = to_indycam(sd);
u8 reg; u8 reg;
int ret = 0; int ret = 0;
switch (ctrl->id) { switch (ctrl->id) {
case V4L2_CID_AUTOGAIN: case V4L2_CID_AUTOGAIN:
case V4L2_CID_AUTO_WHITE_BALANCE: 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) if (ret)
return -EIO; return -EIO;
if (ctrl->id == V4L2_CID_AUTOGAIN) if (ctrl->id == V4L2_CID_AUTOGAIN)
@@ -161,38 +167,38 @@ static int indycam_get_control(struct i2c_client *client,
? 1 : 0; ? 1 : 0;
break; break;
case V4L2_CID_EXPOSURE: case V4L2_CID_EXPOSURE:
ret = indycam_read_reg(client, INDYCAM_REG_SHUTTER, &reg); ret = indycam_read_reg(sd, INDYCAM_REG_SHUTTER, &reg);
if (ret) if (ret)
return -EIO; return -EIO;
ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1); ctrl->value = ((s32)reg == 0x00) ? 0xff : ((s32)reg - 1);
break; break;
case V4L2_CID_GAIN: case V4L2_CID_GAIN:
ret = indycam_read_reg(client, INDYCAM_REG_GAIN, &reg); ret = indycam_read_reg(sd, INDYCAM_REG_GAIN, &reg);
if (ret) if (ret)
return -EIO; return -EIO;
ctrl->value = (s32)reg; ctrl->value = (s32)reg;
break; break;
case V4L2_CID_RED_BALANCE: 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) if (ret)
return -EIO; return -EIO;
ctrl->value = (s32)reg; ctrl->value = (s32)reg;
break; break;
case V4L2_CID_BLUE_BALANCE: 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) if (ret)
return -EIO; return -EIO;
ctrl->value = (s32)reg; ctrl->value = (s32)reg;
break; break;
case INDYCAM_CONTROL_RED_SATURATION: case INDYCAM_CONTROL_RED_SATURATION:
ret = indycam_read_reg(client, ret = indycam_read_reg(sd,
INDYCAM_REG_RED_SATURATION, &reg); INDYCAM_REG_RED_SATURATION, &reg);
if (ret) if (ret)
return -EIO; return -EIO;
ctrl->value = (s32)reg; ctrl->value = (s32)reg;
break; break;
case INDYCAM_CONTROL_BLUE_SATURATION: case INDYCAM_CONTROL_BLUE_SATURATION:
ret = indycam_read_reg(client, ret = indycam_read_reg(sd,
INDYCAM_REG_BLUE_SATURATION, &reg); INDYCAM_REG_BLUE_SATURATION, &reg);
if (ret) if (ret)
return -EIO; return -EIO;
@@ -200,7 +206,7 @@ static int indycam_get_control(struct i2c_client *client,
break; break;
case V4L2_CID_GAMMA: case V4L2_CID_GAMMA:
if (camera->version == CAMERA_VERSION_MOOSE) { if (camera->version == CAMERA_VERSION_MOOSE) {
ret = indycam_read_reg(client, ret = indycam_read_reg(sd,
INDYCAM_REG_GAMMA, &reg); INDYCAM_REG_GAMMA, &reg);
if (ret) if (ret)
return -EIO; return -EIO;
@@ -216,17 +222,16 @@ static int indycam_get_control(struct i2c_client *client,
return ret; return ret;
} }
static int indycam_set_control(struct i2c_client *client, static int indycam_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
struct v4l2_control *ctrl)
{ {
struct indycam *camera = i2c_get_clientdata(client); struct indycam *camera = to_indycam(sd);
u8 reg; u8 reg;
int ret = 0; int ret = 0;
switch (ctrl->id) { switch (ctrl->id) {
case V4L2_CID_AUTOGAIN: case V4L2_CID_AUTOGAIN:
case V4L2_CID_AUTO_WHITE_BALANCE: 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) if (ret)
break; break;
@@ -242,34 +247,34 @@ static int indycam_set_control(struct i2c_client *client,
reg &= ~INDYCAM_CONTROL_AWBCTL; reg &= ~INDYCAM_CONTROL_AWBCTL;
} }
ret = indycam_write_reg(client, INDYCAM_REG_CONTROL, reg); ret = indycam_write_reg(sd, INDYCAM_REG_CONTROL, reg);
break; break;
case V4L2_CID_EXPOSURE: case V4L2_CID_EXPOSURE:
reg = (ctrl->value == 0xff) ? 0x00 : (ctrl->value + 1); 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; break;
case V4L2_CID_GAIN: 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; break;
case V4L2_CID_RED_BALANCE: 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); ctrl->value);
break; break;
case V4L2_CID_BLUE_BALANCE: 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); ctrl->value);
break; break;
case INDYCAM_CONTROL_RED_SATURATION: 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); ctrl->value);
break; break;
case INDYCAM_CONTROL_BLUE_SATURATION: 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); ctrl->value);
break; break;
case V4L2_CID_GAMMA: case V4L2_CID_GAMMA:
if (camera->version == CAMERA_VERSION_MOOSE) { if (camera->version == CAMERA_VERSION_MOOSE) {
ret = indycam_write_reg(client, INDYCAM_REG_GAMMA, ret = indycam_write_reg(sd, INDYCAM_REG_GAMMA,
ctrl->value); ctrl->value);
} }
break; break;
@@ -282,30 +287,39 @@ static int indycam_set_control(struct i2c_client *client,
/* I2C-interface */ /* I2C-interface */
static int indycam_command(struct i2c_client *client, unsigned int cmd, static int indycam_g_chip_ident(struct v4l2_subdev *sd,
void *arg) struct v4l2_dbg_chip_ident *chip)
{ {
/* The old video_decoder interface just isn't enough, struct i2c_client *client = v4l2_get_subdevdata(sd);
* so we'll use some custom commands. */ struct indycam *camera = to_indycam(sd);
switch (cmd) {
case VIDIOC_G_CTRL:
return indycam_get_control(client, arg);
case VIDIOC_S_CTRL: return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_INDYCAM,
return indycam_set_control(client, arg); camera->version);
default:
return -EINVAL;
} }
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, static int indycam_probe(struct i2c_client *client,
const struct i2c_device_id *id) const struct i2c_device_id *id)
{ {
int err = 0; int err = 0;
struct indycam *camera; struct indycam *camera;
struct v4l2_subdev *sd;
v4l_info(client, "chip found @ 0x%x (%s)\n", v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name); client->addr << 1, client->adapter->name);
@@ -314,9 +328,8 @@ static int indycam_probe(struct i2c_client *client,
if (!camera) if (!camera)
return -ENOMEM; return -ENOMEM;
i2c_set_clientdata(client, camera); sd = &camera->sd;
v4l2_i2c_subdev_init(sd, client, &indycam_ops);
camera->client = client;
camera->version = i2c_smbus_read_byte_data(client, camera->version = i2c_smbus_read_byte_data(client,
INDYCAM_REG_VERSION); INDYCAM_REG_VERSION);
@@ -330,20 +343,20 @@ static int indycam_probe(struct i2c_client *client,
INDYCAM_VERSION_MAJOR(camera->version), INDYCAM_VERSION_MAJOR(camera->version),
INDYCAM_VERSION_MINOR(camera->version)); INDYCAM_VERSION_MINOR(camera->version));
indycam_regdump(client); indycam_regdump(sd);
// initialize // initialize
err = indycam_write_block(client, 0, sizeof(initseq), (u8 *)&initseq); err = indycam_write_block(sd, 0, sizeof(initseq), (u8 *)&initseq);
if (err) { if (err) {
printk(KERN_ERR "IndyCam initialization failed\n"); printk(KERN_ERR "IndyCam initialization failed\n");
kfree(camera); kfree(camera);
return -EIO; return -EIO;
} }
indycam_regdump(client); indycam_regdump(sd);
// white balance // white balance
err = indycam_write_reg(client, INDYCAM_REG_CONTROL, err = indycam_write_reg(sd, INDYCAM_REG_CONTROL,
INDYCAM_CONTROL_AGCENA | INDYCAM_CONTROL_AWBCTL); INDYCAM_CONTROL_AGCENA | INDYCAM_CONTROL_AWBCTL);
if (err) { if (err) {
printk(KERN_ERR "IndyCam: White balancing camera failed\n"); printk(KERN_ERR "IndyCam: White balancing camera failed\n");
@@ -351,7 +364,7 @@ static int indycam_probe(struct i2c_client *client,
return -EIO; return -EIO;
} }
indycam_regdump(client); indycam_regdump(sd);
printk(KERN_INFO "IndyCam initialized\n"); 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) 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; return 0;
} }

3
include/media/v4l2-chip-ident.h
View File

@@ -70,6 +70,9 @@ enum {
V4L2_IDENT_CX23416 = 416, V4L2_IDENT_CX23416 = 416,
V4L2_IDENT_CX23418 = 418, V4L2_IDENT_CX23418 = 418,
/* module indycam: just ident 2000 */
V4L2_IDENT_INDYCAM = 2000,
/* module bt819: reserved range 810-819 */ /* module bt819: reserved range 810-819 */
V4L2_IDENT_BT815A = 815, V4L2_IDENT_BT815A = 815,
V4L2_IDENT_BT817A = 817, V4L2_IDENT_BT817A = 817,