diff options
Diffstat (limited to 'drivers/media/video/cs5345.c')
| -rw-r--r-- | drivers/media/video/cs5345.c | 227 |
1 files changed, 138 insertions, 89 deletions
diff --git a/drivers/media/video/cs5345.c b/drivers/media/video/cs5345.c index a662b15..70fcd0d 100644 --- a/drivers/media/video/cs5345.c +++ b/drivers/media/video/cs5345.c @@ -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"); @@ -40,111 +40,143 @@ 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; @@ -152,9 +184,25 @@ static int cs5345_probe(struct i2c_client *client, 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; } @@ -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, }; |
