ASoC: Add WM8912 DAC support

The WM8912 is a DAC only device register compatible with the WM8904
CODEC with ADC portions omitted.  Support it within the WM8904 driver
based on the configured I2C device name.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 72 insertions, 18 deletions

diff --git a/sound/soc/codecs/wm8904.c b/sound/soc/codecs/wm8904.c
index 80dd8df0b864..593e47d0e0eb 100644
--- a/sound/soc/codecs/wm8904.c
+++ b/sound/soc/codecs/wm8904.c
@@ -33,6 +33,11 @@
 static struct snd_soc_codec *wm8904_codec;
 struct snd_soc_codec_device soc_codec_dev_wm8904;
 
+enum wm8904_type {
+        WM8904,
+        WM8912,
+};
+
 #define WM8904_NUM_DCS_CHANNELS 4
 
 #define WM8904_NUM_SUPPLIES 5
@@ -49,6 +54,8 @@ struct wm8904_priv {
         struct snd_soc_codec codec;
         u16 reg_cache[WM8904_MAX_REGISTER + 1];
 
+        enum wm8904_type devtype;
+
         struct regulator_bulk_data supplies[WM8904_NUM_SUPPLIES];
 
         struct wm8904_pdata *pdata;
@@ -1411,30 +1418,62 @@ static const struct snd_soc_dapm_route wm8904_intercon[] = {
         { "LINER PGA", NULL, "LINER Mux" },
 };
 
+static const struct snd_soc_dapm_route wm8912_intercon[] = {
+        { "HPL PGA", NULL, "DACL" },
+        { "HPR PGA", NULL, "DACR" },
+
+        { "LINEL PGA", NULL, "DACL" },
+        { "LINER PGA", NULL, "DACR" },
+};
+
 static int wm8904_add_widgets(struct snd_soc_codec *codec)
 {
-        snd_soc_add_controls(codec, wm8904_adc_snd_controls,
-                             ARRAY_SIZE(wm8904_adc_snd_controls));
-        snd_soc_add_controls(codec, wm8904_dac_snd_controls,
-                             ARRAY_SIZE(wm8904_dac_snd_controls));
-        snd_soc_add_controls(codec, wm8904_snd_controls,
-                             ARRAY_SIZE(wm8904_snd_controls));
+        struct wm8904_priv *wm8904 = codec->private_data;
 
         snd_soc_dapm_new_controls(codec, wm8904_core_dapm_widgets,
                                   ARRAY_SIZE(wm8904_core_dapm_widgets));
-        snd_soc_dapm_new_controls(codec, wm8904_adc_dapm_widgets,
-                                  ARRAY_SIZE(wm8904_adc_dapm_widgets));
-        snd_soc_dapm_new_controls(codec, wm8904_dac_dapm_widgets,
-                                  ARRAY_SIZE(wm8904_dac_dapm_widgets));
-        snd_soc_dapm_new_controls(codec, wm8904_dapm_widgets,
-                                  ARRAY_SIZE(wm8904_dapm_widgets));
-
         snd_soc_dapm_add_routes(codec, core_intercon,
                                 ARRAY_SIZE(core_intercon));
-        snd_soc_dapm_add_routes(codec, adc_intercon, ARRAY_SIZE(adc_intercon));
-        snd_soc_dapm_add_routes(codec, dac_intercon, ARRAY_SIZE(dac_intercon));
-        snd_soc_dapm_add_routes(codec, wm8904_intercon,
-                                ARRAY_SIZE(wm8904_intercon));
+
+        switch (wm8904->devtype) {
+        case WM8904:
+                snd_soc_add_controls(codec, wm8904_adc_snd_controls,
+                                     ARRAY_SIZE(wm8904_adc_snd_controls));
+                snd_soc_add_controls(codec, wm8904_dac_snd_controls,
+                                     ARRAY_SIZE(wm8904_dac_snd_controls));
+                snd_soc_add_controls(codec, wm8904_snd_controls,
+                                     ARRAY_SIZE(wm8904_snd_controls));
+
+                snd_soc_dapm_new_controls(codec, wm8904_adc_dapm_widgets,
+                                          ARRAY_SIZE(wm8904_adc_dapm_widgets));
+                snd_soc_dapm_new_controls(codec, wm8904_dac_dapm_widgets,
+                                          ARRAY_SIZE(wm8904_dac_dapm_widgets));
+                snd_soc_dapm_new_controls(codec, wm8904_dapm_widgets,
+                                          ARRAY_SIZE(wm8904_dapm_widgets));
+
+                snd_soc_dapm_add_routes(codec, core_intercon,
+                                        ARRAY_SIZE(core_intercon));
+                snd_soc_dapm_add_routes(codec, adc_intercon,
+                                        ARRAY_SIZE(adc_intercon));
+                snd_soc_dapm_add_routes(codec, dac_intercon,
+                                        ARRAY_SIZE(dac_intercon));
+                snd_soc_dapm_add_routes(codec, wm8904_intercon,
+                                        ARRAY_SIZE(wm8904_intercon));
+                break;
+
+        case WM8912:
+                snd_soc_add_controls(codec, wm8904_dac_snd_controls,
+                                     ARRAY_SIZE(wm8904_dac_snd_controls));
+
+                snd_soc_dapm_new_controls(codec, wm8904_dac_dapm_widgets,
+                                          ARRAY_SIZE(wm8904_dac_dapm_widgets));
+
+                snd_soc_dapm_add_routes(codec, dac_intercon,
+                                        ARRAY_SIZE(dac_intercon));
+                snd_soc_dapm_add_routes(codec, wm8912_intercon,
+                                        ARRAY_SIZE(wm8912_intercon));
+                break;
+        }
 
         snd_soc_dapm_new_widgets(codec);
         return 0;
@@ -2412,6 +2451,18 @@ static int wm8904_register(struct wm8904_priv *wm8904,
         codec->cache_sync = 1;
         codec->idle_bias_off = 1;
 
+        switch (wm8904->devtype) {
+        case WM8904:
+                break;
+        case WM8912:
+                memset(&wm8904_dai.capture, 0, sizeof(wm8904_dai.capture));
+                break;
+        default:
+                dev_err(codec->dev, "Unknown device type %d\n",
+                        wm8904->devtype);
+                return -EINVAL;
+        }
+
         memcpy(codec->reg_cache, wm8904_reg, sizeof(wm8904_reg));
 
         ret = snd_soc_codec_set_cache_io(codec, 8, 16, control);
@@ -2542,6 +2593,8 @@ static __devinit int wm8904_i2c_probe(struct i2c_client *i2c,
         codec = &wm8904->codec;
         codec->hw_write = (hw_write_t)i2c_master_send;
 
+        wm8904->devtype = id->driver_data;
+
         i2c_set_clientdata(i2c, wm8904);
         codec->control_data = i2c;
         wm8904->pdata = i2c->dev.platform_data;
@@ -2559,7 +2612,8 @@ static __devexit int wm8904_i2c_remove(struct i2c_client *client)
 }
 
 static const struct i2c_device_id wm8904_i2c_id[] = {
-        { "wm8904", 0 },
+        { "wm8904", WM8904 },
+        { "wm8912", WM8912 },
         { }
 };
 MODULE_DEVICE_TABLE(i2c, wm8904_i2c_id);