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yaml
---
r: 124453
b: refs/heads/master
c: b3ee7e2
h: refs/heads/master
i:
  124451: 0b0472e
v: v3
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Hans Verkuil authored and Mauro Carvalho Chehab committed Dec 30, 2008
1 parent 614b937 commit f66da1a
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Showing 2 changed files with 139 additions and 90 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 12f91a3fac52ea0fb0913b4e0e66e7357f31251c
refs/heads/master: b3ee7e21f25cdd50cccc906dc09e547f36166372
227 changes: 138 additions & 89 deletions trunk/drivers/media/video/cs5345.c
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Original file line number Diff line number Diff line change
Expand Up @@ -23,9 +23,9 @@
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-i2c-drv.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-i2c-drv.h>

MODULE_DESCRIPTION("i2c device driver for cs5345 Audio ADC");
MODULE_AUTHOR("Hans Verkuil");
Expand All @@ -40,121 +40,169 @@ MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On");

/* ----------------------------------------------------------------------- */

static inline int cs5345_write(struct i2c_client *client, u8 reg, u8 value)
static inline int cs5345_write(struct v4l2_subdev *sd, u8 reg, u8 value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);

return i2c_smbus_write_byte_data(client, reg, value);
}

static inline int cs5345_read(struct i2c_client *client, u8 reg)
static inline int cs5345_read(struct v4l2_subdev *sd, u8 reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);

return i2c_smbus_read_byte_data(client, reg);
}

static int cs5345_command(struct i2c_client *client, unsigned cmd, void *arg)
static int cs5345_s_routing(struct v4l2_subdev *sd, const struct v4l2_routing *route)
{
struct v4l2_routing *route = arg;
struct v4l2_control *ctrl = arg;

switch (cmd) {
case VIDIOC_INT_G_AUDIO_ROUTING:
route->input = cs5345_read(client, 0x09) & 7;
route->input |= cs5345_read(client, 0x05) & 0x70;
route->output = 0;
break;

case VIDIOC_INT_S_AUDIO_ROUTING:
if ((route->input & 0xf) > 6) {
v4l_err(client, "Invalid input %d.\n", route->input);
return -EINVAL;
}
cs5345_write(client, 0x09, route->input & 0xf);
cs5345_write(client, 0x05, route->input & 0xf0);
break;

case VIDIOC_G_CTRL:
if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
ctrl->value = (cs5345_read(client, 0x04) & 0x08) != 0;
break;
}
if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
return -EINVAL;
ctrl->value = cs5345_read(client, 0x07) & 0x3f;
if (ctrl->value >= 32)
ctrl->value = ctrl->value - 64;
break;

case VIDIOC_S_CTRL:
break;
if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
cs5345_write(client, 0x04, ctrl->value ? 0x80 : 0);
break;
}
if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
return -EINVAL;
if (ctrl->value > 24 || ctrl->value < -24)
return -EINVAL;
cs5345_write(client, 0x07, ((u8)ctrl->value) & 0x3f);
cs5345_write(client, 0x08, ((u8)ctrl->value) & 0x3f);
break;

#ifdef CONFIG_VIDEO_ADV_DEBUG
case VIDIOC_DBG_G_REGISTER:
case VIDIOC_DBG_S_REGISTER:
{
struct v4l2_register *reg = arg;

if (!v4l2_chip_match_i2c_client(client,
reg->match_type, reg->match_chip))
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
if (cmd == VIDIOC_DBG_G_REGISTER)
reg->val = cs5345_read(client, reg->reg & 0x1f);
else
cs5345_write(client, reg->reg & 0x1f, reg->val & 0xff);
break;
if ((route->input & 0xf) > 6) {
v4l2_err(sd, "Invalid input %d.\n", route->input);
return -EINVAL;
}
#endif
cs5345_write(sd, 0x09, route->input & 0xf);
cs5345_write(sd, 0x05, route->input & 0xf0);
return 0;
}

case VIDIOC_G_CHIP_IDENT:
return v4l2_chip_ident_i2c_client(client,
arg, V4L2_IDENT_CS5345, 0);

case VIDIOC_LOG_STATUS:
{
u8 v = cs5345_read(client, 0x09) & 7;
u8 m = cs5345_read(client, 0x04);
int vol = cs5345_read(client, 0x08) & 0x3f;

v4l_info(client, "Input: %d%s\n", v,
(m & 0x80) ? " (muted)" : "");
if (vol >= 32)
vol = vol - 64;
v4l_info(client, "Volume: %d dB\n", vol);
break;
}

default:
static int cs5345_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
ctrl->value = (cs5345_read(sd, 0x04) & 0x08) != 0;
return 0;
}
if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
return -EINVAL;
ctrl->value = cs5345_read(sd, 0x07) & 0x3f;
if (ctrl->value >= 32)
ctrl->value = ctrl->value - 64;
return 0;
}

static int cs5345_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
{
if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
cs5345_write(sd, 0x04, ctrl->value ? 0x80 : 0);
return 0;
}
if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
return -EINVAL;
if (ctrl->value > 24 || ctrl->value < -24)
return -EINVAL;
cs5345_write(sd, 0x07, ((u8)ctrl->value) & 0x3f);
cs5345_write(sd, 0x08, ((u8)ctrl->value) & 0x3f);
return 0;
}

#ifdef CONFIG_VIDEO_ADV_DEBUG
static int cs5345_g_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);

if (!v4l2_chip_match_i2c_client(client,
reg->match_type, reg->match_chip))
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
reg->val = cs5345_read(sd, reg->reg & 0x1f);
return 0;
}

static int cs5345_s_register(struct v4l2_subdev *sd, struct v4l2_register *reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);

if (!v4l2_chip_match_i2c_client(client,
reg->match_type, reg->match_chip))
return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
cs5345_write(sd, reg->reg & 0x1f, reg->val & 0xff);
return 0;
}
#endif

static int cs5345_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_chip_ident *chip)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);

return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_CS5345, 0);
}

static int cs5345_log_status(struct v4l2_subdev *sd)
{
u8 v = cs5345_read(sd, 0x09) & 7;
u8 m = cs5345_read(sd, 0x04);
int vol = cs5345_read(sd, 0x08) & 0x3f;

v4l2_info(sd, "Input: %d%s\n", v,
(m & 0x80) ? " (muted)" : "");
if (vol >= 32)
vol = vol - 64;
v4l2_info(sd, "Volume: %d dB\n", vol);
return 0;
}

static int cs5345_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 cs5345_core_ops = {
.log_status = cs5345_log_status,
.g_chip_ident = cs5345_g_chip_ident,
.g_ctrl = cs5345_g_ctrl,
.s_ctrl = cs5345_s_ctrl,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.g_register = cs5345_g_register,
.s_register = cs5345_s_register,
#endif
};

static const struct v4l2_subdev_audio_ops cs5345_audio_ops = {
.s_routing = cs5345_s_routing,
};

static const struct v4l2_subdev_ops cs5345_ops = {
.core = &cs5345_core_ops,
.audio = &cs5345_audio_ops,
};

/* ----------------------------------------------------------------------- */

static int cs5345_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct v4l2_subdev *sd;

/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -EIO;

v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);

cs5345_write(client, 0x02, 0x00);
cs5345_write(client, 0x04, 0x01);
cs5345_write(client, 0x09, 0x01);
sd = kzalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
if (sd == NULL)
return -ENOMEM;
v4l2_i2c_subdev_init(sd, client, &cs5345_ops);

cs5345_write(sd, 0x02, 0x00);
cs5345_write(sd, 0x04, 0x01);
cs5345_write(sd, 0x09, 0x01);
return 0;
}

/* ----------------------------------------------------------------------- */

static int cs5345_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);

v4l2_device_unregister_subdev(sd);
kfree(sd);
return 0;
}

Expand All @@ -171,5 +219,6 @@ static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.driverid = I2C_DRIVERID_CS5345,
.command = cs5345_command,
.probe = cs5345_probe,
.remove = cs5345_remove,
.id_table = cs5345_id,
};

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