diff options
| -rw-r--r-- | drivers/media/video/cs53l32a.c | 65 |
1 files changed, 37 insertions, 28 deletions
diff --git a/drivers/media/video/cs53l32a.c b/drivers/media/video/cs53l32a.c index aa31b67..7d997ae 100644 --- a/drivers/media/video/cs53l32a.c +++ b/drivers/media/video/cs53l32a.c @@ -74,50 +74,59 @@ static int cs53l32a_read(struct i2c_client *client, u8 reg) static int cs53l32a_command(struct i2c_client *client, unsigned int cmd, void *arg) { - int *input = arg; + struct v4l2_audio *input = arg; + struct v4l2_control *ctrl = arg; switch (cmd) { - case AUDC_SET_INPUT: - switch (*input) { - case AUDIO_TUNER: - cs53l32a_write(client, 0x01, 0x01); - break; - case AUDIO_EXTERN: - cs53l32a_write(client, 0x01, 0x21); - break; - case AUDIO_MUTE: - cs53l32a_write(client, 0x03, 0xF0); - break; - case AUDIO_UNMUTE: - cs53l32a_write(client, 0x03, 0x30); - break; - default: - cs53l32a_err("Invalid input %d.\n", *input); + case VIDIOC_S_AUDIO: + /* There are 2 physical inputs, but the second input can be + placed in two modes, the first mode bypasses the PGA (gain), + the second goes through the PGA. Hence there are three + possible inputs to choose from. */ + if (input->index > 2) { + cs53l32a_err("Invalid input %d.\n", input->index); return -EINVAL; } + cs53l32a_write(client, 0x01, 0x01 + (input->index << 4)); + break; + + case VIDIOC_G_AUDIO: + memset(input, 0, sizeof(*input)); + input->index = (cs53l32a_read(client, 0x01) >> 4) & 3; + break; + + case VIDIOC_G_CTRL: + if (ctrl->id == V4L2_CID_AUDIO_MUTE) { + ctrl->value = (cs53l32a_read(client, 0x03) & 0xc0) != 0; + break; + } + if (ctrl->id != V4L2_CID_AUDIO_VOLUME) + return -EINVAL; + ctrl->value = (s8)cs53l32a_read(client, 0x04); break; case VIDIOC_S_CTRL: - { - struct v4l2_control *ctrl = arg; - - if (ctrl->id != V4L2_CID_AUDIO_VOLUME) - return -EINVAL; - if (ctrl->value > 12 || ctrl->value < -90) - return -EINVAL; - cs53l32a_write(client, 0x04, (u8) ctrl->value); - cs53l32a_write(client, 0x05, (u8) ctrl->value); + if (ctrl->id == V4L2_CID_AUDIO_MUTE) { + cs53l32a_write(client, 0x03, ctrl->value ? 0xf0 : 0x30); break; } + if (ctrl->id != V4L2_CID_AUDIO_VOLUME) + return -EINVAL; + if (ctrl->value > 12 || ctrl->value < -96) + return -EINVAL; + cs53l32a_write(client, 0x04, (u8) ctrl->value); + cs53l32a_write(client, 0x05, (u8) ctrl->value); + break; case VIDIOC_LOG_STATUS: { u8 v = cs53l32a_read(client, 0x01); u8 m = cs53l32a_read(client, 0x03); + s8 vol = cs53l32a_read(client, 0x04); - cs53l32a_info("Input: %s%s\n", - v == 0x21 ? "external line in" : "tuner", + cs53l32a_info("Input: %d%s\n", (v >> 4) & 3, (m & 0xC0) ? " (muted)" : ""); + cs53l32a_info("Volume: %d dB\n", vol); break; } |
