V4L/DVB (9963): tlv320aic23b: convert to v4l2_subdev.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 87 insertions, 54 deletions

diff --git a/drivers/media/video/tlv320aic23b.c b/drivers/media/video/tlv320aic23b.c
index 281065b9dd2d..5c95ecd09dc2 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;
 }