[ALSA] Enable capture from line-in and CD on Revolution 5.1

Enable capture from line-in and CD on the Revolution 5.1 card.
This patch adds support for switching between the 5 input channels of
the AK5365 ADC and modifies the Revolution 5.1 driver to make use of
this facility.  Previously the capture channel was fixed to channel 0
(microphone on the Revolution 5.1 card).

Signed-off-by: Jochen Voss <voss@seehuhn.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 83 insertions, 2 deletions

diff --git a/sound/i2c/other/ak4xxx-adda.c b/sound/i2c/other/ak4xxx-adda.c
index 5da49e2eb350..fe61b92f4e47 100644
--- a/sound/i2c/other/ak4xxx-adda.c
+++ b/sound/i2c/other/ak4xxx-adda.c
@@ -513,6 +513,66 @@ static int ak4xxx_switch_put(struct snd_kcontrol *kcontrol,
         return change;
 }
 
+#define AK5365_NUM_INPUTS 5
+
+static int ak4xxx_capture_source_info(struct snd_kcontrol *kcontrol,
+                                      struct snd_ctl_elem_info *uinfo)
+{
+        struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
+        int mixer_ch = AK_GET_SHIFT(kcontrol->private_value);
+        const char **input_names;
+        int  num_names, idx;
+
+        input_names = ak->adc_info[mixer_ch].input_names;
+
+        num_names = 0;
+        while (num_names < AK5365_NUM_INPUTS && input_names[num_names])
+                ++num_names;
+        
+        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+        uinfo->count = 1;
+        uinfo->value.enumerated.items = num_names;
+        idx = uinfo->value.enumerated.item;
+        if (idx >= num_names)
+                return -EINVAL;
+        strncpy(uinfo->value.enumerated.name, input_names[idx],
+                sizeof(uinfo->value.enumerated.name));
+        return 0;
+}
+
+static int ak4xxx_capture_source_get(struct snd_kcontrol *kcontrol,
+                                     struct snd_ctl_elem_value *ucontrol)
+{
+        struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
+        int chip = AK_GET_CHIP(kcontrol->private_value);
+        int addr = AK_GET_ADDR(kcontrol->private_value);
+        int mask = AK_GET_MASK(kcontrol->private_value);
+        unsigned char val;
+
+        val = snd_akm4xxx_get(ak, chip, addr) & mask;
+        ucontrol->value.enumerated.item[0] = val;
+        return 0;
+}
+
+static int ak4xxx_capture_source_put(struct snd_kcontrol *kcontrol,
+                                     struct snd_ctl_elem_value *ucontrol)
+{
+        struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol);
+        int chip = AK_GET_CHIP(kcontrol->private_value);
+        int addr = AK_GET_ADDR(kcontrol->private_value);
+        int mask = AK_GET_MASK(kcontrol->private_value);
+        unsigned char oval, val;
+
+        oval = snd_akm4xxx_get(ak, chip, addr);
+        val = oval & ~mask;
+        val |= ucontrol->value.enumerated.item[0] & mask;
+        if (val != oval) {
+                snd_akm4xxx_write(ak, chip, addr, val);
+                return 1;
+        }
+        return 0;
+}
+
 /*
  * build AK4xxx controls
  */
@@ -647,9 +707,10 @@ static int build_adc_controls(struct snd_akm4xxx *ak)
 
                 if (ak->type == SND_AK5365 && (idx % 2) == 0) {
                         if (! ak->adc_info || 
-                            ! ak->adc_info[mixer_ch].switch_name)
+                            ! ak->adc_info[mixer_ch].switch_name) {
                                 knew.name = "Capture Switch";
-                        else
+                                knew.index = mixer_ch + ak->idx_offset * 2;
+                        } else
                                 knew.name = ak->adc_info[mixer_ch].switch_name;
                         knew.info = ak4xxx_switch_info;
                         knew.get = ak4xxx_switch_get;
@@ -662,6 +723,26 @@ static int build_adc_controls(struct snd_akm4xxx *ak)
                         err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
                         if (err < 0)
                                 return err;
+
+                        memset(&knew, 0, sizeof(knew));
+                        knew.name = ak->adc_info[mixer_ch].selector_name;
+                        if (!knew.name) {
+                                knew.name = "Capture Channel";
+                                knew.index = mixer_ch + ak->idx_offset * 2;
+                        }
+
+                        knew.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
+                        knew.info = ak4xxx_capture_source_info;
+                        knew.get = ak4xxx_capture_source_get;
+                        knew.put = ak4xxx_capture_source_put;
+                        knew.access = 0;
+                        /* input selector control: reg. 1, bits 0-2.
+                         * mis-use 'shift' to pass mixer_ch */
+                        knew.private_value
+                                = AK_COMPOSE(idx/2, 1, mixer_ch, 0x07);
+                        err = snd_ctl_add(ak->card, snd_ctl_new1(&knew, ak));
+                        if (err < 0)
+                                return err;
                 }
 
                 idx += num_stereo;