greybus: audio: Fetch jack_mask, button_mask from module's topology data

Added extra fields namely jack_mask & button_mask for each module_info.
These fields are required while registering jack & reporting jack
events.

Earlier, these were hard coded values assuming fixed capabilities say
HEADSET, LINEOUT, etc. supported by GB-codec driver. Now these are
computed dynamically based on module's jack capability shared via
topology data.

Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Reviewed-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

1 files changed, 45 insertions, 23 deletions

diff --git a/drivers/staging/greybus/audio_codec.c b/drivers/staging/greybus/audio_codec.c
index 810ac6269cff..2f70295e0094 100644
--- a/drivers/staging/greybus/audio_codec.c
+++ b/drivers/staging/greybus/audio_codec.c
@@ -707,50 +707,72 @@ static int gbaudio_init_jack(struct gbaudio_module_info *module,
 {
 	int ret;
 
+	if (!module->jack_mask)
+		return 0;
+
 	snprintf(module->jack_name, NAME_SIZE, "GB %d Headset Jack",
 		 module->dev_id);
-	ret = snd_soc_jack_new(codec, module->jack_name, GBCODEC_JACK_MASK,
+	ret = snd_soc_jack_new(codec, module->jack_name, module->jack_mask,
 			       &module->headset_jack);
 	if (ret) {
 		dev_err(module->dev, "Failed to create new jack\n");
 		return ret;
 	}
 
+	if (!module->button_mask)
+		return 0;
+
 	snprintf(module->button_name, NAME_SIZE, "GB %d Button Jack",
 		 module->dev_id);
-	ret = snd_soc_jack_new(codec, module->button_name,
-			       GBCODEC_JACK_BUTTON_MASK, &module->button_jack);
+	ret = snd_soc_jack_new(codec, module->button_name, module->button_mask,
+			       &module->button_jack);
 	if (ret) {
 		dev_err(module->dev, "Failed to create button jack\n");
 		return ret;
 	}
 
-	ret = snd_jack_set_key(module->button_jack.jack, SND_JACK_BTN_0,
-			       KEY_MEDIA);
-	if (ret) {
-		dev_err(module->dev, "Failed to set BTN_0\n");
-		return ret;
+	/*
+	 * Currently, max 4 buttons are supported with following key mapping
+	 * BTN_0 = KEY_MEDIA
+	 * BTN_1 = KEY_VOICECOMMAND
+	 * BTN_2 = KEY_VOLUMEUP
+	 * BTN_3 = KEY_VOLUMEDOWN
+	 */
+
+	if (module->button_mask & SND_JACK_BTN_0) {
+		ret = snd_jack_set_key(module->button_jack.jack, SND_JACK_BTN_0,
+				       KEY_MEDIA);
+		if (ret) {
+			dev_err(module->dev, "Failed to set BTN_0\n");
+			return ret;
+		}
 	}
 
-	ret = snd_jack_set_key(module->button_jack.jack, SND_JACK_BTN_1,
-			       KEY_VOICECOMMAND);
-	if (ret) {
-		dev_err(module->dev, "Failed to set BTN_1\n");
-		return ret;
+	if (module->button_mask & SND_JACK_BTN_1) {
+		ret = snd_jack_set_key(module->button_jack.jack, SND_JACK_BTN_1,
+				       KEY_VOICECOMMAND);
+		if (ret) {
+			dev_err(module->dev, "Failed to set BTN_1\n");
+			return ret;
+		}
 	}
 
-	ret = snd_jack_set_key(module->button_jack.jack, SND_JACK_BTN_2,
-			       KEY_VOLUMEUP);
-	if (ret) {
-		dev_err(module->dev, "Failed to set BTN_2\n");
-		return ret;
+	if (module->button_mask & SND_JACK_BTN_2) {
+		ret = snd_jack_set_key(module->button_jack.jack, SND_JACK_BTN_2,
+				       KEY_VOLUMEUP);
+		if (ret) {
+			dev_err(module->dev, "Failed to set BTN_2\n");
+			return ret;
+		}
 	}
 
-	ret = snd_jack_set_key(module->button_jack.jack, SND_JACK_BTN_3,
-			       KEY_VOLUMEDOWN);
-	if (ret) {
-		dev_err(module->dev, "Failed to set BTN_0\n");
-		return ret;
+	if (module->button_mask & SND_JACK_BTN_3) {
+		ret = snd_jack_set_key(module->button_jack.jack, SND_JACK_BTN_3,
+				       KEY_VOLUMEDOWN);
+		if (ret) {
+			dev_err(module->dev, "Failed to set BTN_0\n");
+			return ret;
+		}
 	}
 
 	/* FIXME