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path: root/drivers/media/video/tlv320aic23b.c
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Diffstat (limited to 'drivers/media/video/tlv320aic23b.c')
-rw-r--r--drivers/media/video/tlv320aic23b.c141
1 files changed, 87 insertions, 54 deletions
diff --git a/drivers/media/video/tlv320aic23b.c b/drivers/media/video/tlv320aic23b.c
index 281065b9dd2..5c95ecd09dc 100644
--- a/drivers/media/video/tlv320aic23b.c
+++ b/drivers/media/video/tlv320aic23b.c
@@ -30,7 +30,7 @@
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev2.h>
-#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
#include <media/v4l2-i2c-drv-legacy.h>
MODULE_DESCRIPTION("tlv320aic23b driver");
@@ -44,15 +44,22 @@ I2C_CLIENT_INSMOD;
/* ----------------------------------------------------------------------- */
struct tlv320aic23b_state {
+ struct v4l2_subdev sd;
u8 muted;
};
-static int tlv320aic23b_write(struct i2c_client *client, int reg, u16 val)
+static inline struct tlv320aic23b_state *to_state(struct v4l2_subdev *sd)
{
+ return container_of(sd, struct tlv320aic23b_state, sd);
+}
+
+static int tlv320aic23b_write(struct v4l2_subdev *sd, int reg, u16 val)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
int i;
if ((reg < 0 || reg > 9) && (reg != 15)) {
- v4l_err(client, "Invalid register R%d\n", reg);
+ v4l2_err(sd, "Invalid register R%d\n", reg);
return -1;
}
@@ -60,61 +67,82 @@ static int tlv320aic23b_write(struct i2c_client *client, int reg, u16 val)
if (i2c_smbus_write_byte_data(client,
(reg << 1) | (val >> 8), val & 0xff) == 0)
return 0;
- v4l_err(client, "I2C: cannot write %03x to register R%d\n", val, reg);
+ v4l2_err(sd, "I2C: cannot write %03x to register R%d\n", val, reg);
return -1;
}
-static int tlv320aic23b_command(struct i2c_client *client,
- unsigned int cmd, void *arg)
+static int tlv320aic23b_s_clock_freq(struct v4l2_subdev *sd, u32 freq)
{
- struct tlv320aic23b_state *state = i2c_get_clientdata(client);
- struct v4l2_control *ctrl = arg;
- u32 *freq = arg;
-
- switch (cmd) {
- case VIDIOC_INT_AUDIO_CLOCK_FREQ:
- switch (*freq) {
- case 32000: /* set sample rate to 32 kHz */
- tlv320aic23b_write(client, 8, 0x018);
- break;
- case 44100: /* set sample rate to 44.1 kHz */
- tlv320aic23b_write(client, 8, 0x022);
- break;
- case 48000: /* set sample rate to 48 kHz */
- tlv320aic23b_write(client, 8, 0x000);
- break;
- default:
- return -EINVAL;
- }
- break;
-
- case VIDIOC_G_CTRL:
- if (ctrl->id != V4L2_CID_AUDIO_MUTE)
- return -EINVAL;
- ctrl->value = state->muted;
+ switch (freq) {
+ case 32000: /* set sample rate to 32 kHz */
+ tlv320aic23b_write(sd, 8, 0x018);
break;
-
- case VIDIOC_S_CTRL:
- if (ctrl->id != V4L2_CID_AUDIO_MUTE)
- return -EINVAL;
- state->muted = ctrl->value;
- tlv320aic23b_write(client, 0, 0x180); /* mute both channels */
- /* set gain on both channels to +3.0 dB */
- if (!state->muted)
- tlv320aic23b_write(client, 0, 0x119);
+ case 44100: /* set sample rate to 44.1 kHz */
+ tlv320aic23b_write(sd, 8, 0x022);
break;
-
- case VIDIOC_LOG_STATUS:
- v4l_info(client, "Input: %s\n",
- state->muted ? "muted" : "active");
+ case 48000: /* set sample rate to 48 kHz */
+ tlv320aic23b_write(sd, 8, 0x000);
break;
-
default:
return -EINVAL;
}
return 0;
}
+static int tlv320aic23b_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct tlv320aic23b_state *state = to_state(sd);
+
+ if (ctrl->id != V4L2_CID_AUDIO_MUTE)
+ return -EINVAL;
+ ctrl->value = state->muted;
+ return 0;
+}
+
+static int tlv320aic23b_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ struct tlv320aic23b_state *state = to_state(sd);
+
+ if (ctrl->id != V4L2_CID_AUDIO_MUTE)
+ return -EINVAL;
+ state->muted = ctrl->value;
+ tlv320aic23b_write(sd, 0, 0x180); /* mute both channels */
+ /* set gain on both channels to +3.0 dB */
+ if (!state->muted)
+ tlv320aic23b_write(sd, 0, 0x119);
+ return 0;
+}
+
+static int tlv320aic23b_log_status(struct v4l2_subdev *sd)
+{
+ struct tlv320aic23b_state *state = to_state(sd);
+
+ v4l2_info(sd, "Input: %s\n", state->muted ? "muted" : "active");
+ return 0;
+}
+
+static int tlv320aic23b_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 tlv320aic23b_core_ops = {
+ .log_status = tlv320aic23b_log_status,
+ .g_ctrl = tlv320aic23b_g_ctrl,
+ .s_ctrl = tlv320aic23b_s_ctrl,
+};
+
+static const struct v4l2_subdev_audio_ops tlv320aic23b_audio_ops = {
+ .s_clock_freq = tlv320aic23b_s_clock_freq,
+};
+
+static const struct v4l2_subdev_ops tlv320aic23b_ops = {
+ .core = &tlv320aic23b_core_ops,
+ .audio = &tlv320aic23b_audio_ops,
+};
+
/* ----------------------------------------------------------------------- */
/* i2c implementation */
@@ -128,6 +156,7 @@ static int tlv320aic23b_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct tlv320aic23b_state *state;
+ struct v4l2_subdev *sd;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
@@ -136,32 +165,36 @@ static int tlv320aic23b_probe(struct i2c_client *client,
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
- state = kmalloc(sizeof(struct tlv320aic23b_state), GFP_KERNEL);
+ state = kzalloc(sizeof(struct tlv320aic23b_state), GFP_KERNEL);
if (state == NULL)
return -ENOMEM;
+ sd = &state->sd;
+ v4l2_i2c_subdev_init(sd, client, &tlv320aic23b_ops);
state->muted = 0;
- i2c_set_clientdata(client, state);
/* Initialize tlv320aic23b */
/* RESET */
- tlv320aic23b_write(client, 15, 0x000);
+ tlv320aic23b_write(sd, 15, 0x000);
/* turn off DAC & mic input */
- tlv320aic23b_write(client, 6, 0x00A);
+ tlv320aic23b_write(sd, 6, 0x00A);
/* left-justified, 24-bit, master mode */
- tlv320aic23b_write(client, 7, 0x049);
+ tlv320aic23b_write(sd, 7, 0x049);
/* set gain on both channels to +3.0 dB */
- tlv320aic23b_write(client, 0, 0x119);
+ tlv320aic23b_write(sd, 0, 0x119);
/* set sample rate to 48 kHz */
- tlv320aic23b_write(client, 8, 0x000);
+ tlv320aic23b_write(sd, 8, 0x000);
/* activate digital interface */
- tlv320aic23b_write(client, 9, 0x001);
+ tlv320aic23b_write(sd, 9, 0x001);
return 0;
}
static int tlv320aic23b_remove(struct i2c_client *client)
{
- kfree(i2c_get_clientdata(client));
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+
+ v4l2_device_unregister_subdev(sd);
+ kfree(to_state(sd));
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-14 01:45:26 +0000