ASoC: Intel: bytcr_rt5640: quirk for mono speaker

Some Baytrail devices only have a mono speaker, add quirk and enable
it for T100TAF.
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/bytcr_rt5640.c

@@ -40,6 +40,7 @@ enum {
 
 #define BYT_RT5640_MAP(quirk)	((quirk) & 0xff)
 #define BYT_RT5640_DMIC_EN	BIT(16)
+#define BYT_RT5640_MONO_SPEAKER BIT(17)
 
 static unsigned long byt_rt5640_quirk = BYT_RT5640_DMIC1_MAP |
 					BYT_RT5640_DMIC_EN;
@@ -63,10 +64,6 @@ static const struct snd_soc_dapm_route byt_rt5640_audio_map[] = {
 	{"IN2P", NULL, "Headset Mic"},
 	{"Headphone", NULL, "HPOL"},
 	{"Headphone", NULL, "HPOR"},
-	{"Speaker", NULL, "SPOLP"},
-	{"Speaker", NULL, "SPOLN"},
-	{"Speaker", NULL, "SPORP"},
-	{"Speaker", NULL, "SPORN"},
 };
 
 static const struct snd_soc_dapm_route byt_rt5640_intmic_dmic1_map[] = {
@@ -82,6 +79,18 @@ static const struct snd_soc_dapm_route byt_rt5640_intmic_in1_map[] = {
 	{"IN1P", NULL, "Internal Mic"},
 };
 
+static const struct snd_soc_dapm_route byt_rt5640_stereo_spk_map[] = {
+	{"Speaker", NULL, "SPOLP"},
+	{"Speaker", NULL, "SPOLN"},
+	{"Speaker", NULL, "SPORP"},
+	{"Speaker", NULL, "SPORN"},
+};
+
+static const struct snd_soc_dapm_route byt_rt5640_mono_spk_map[] = {
+	{"Speaker", NULL, "SPOLP"},
+	{"Speaker", NULL, "SPOLN"},
+};
+
 static const struct snd_kcontrol_new byt_rt5640_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Headphone"),
 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
@@ -138,7 +147,9 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TAF"),
 		},
-		.driver_data = (unsigned long *)BYT_RT5640_IN1_MAP,
+		.driver_data = (unsigned long *)(BYT_RT5640_IN1_MAP |
+						 BYT_RT5640_MONO_SPEAKER
+						 ),
 	},
 	{
 		.callback = byt_rt5640_quirk_cb,
@@ -200,6 +211,18 @@ static int byt_rt5640_init(struct snd_soc_pcm_runtime *runtime)
 	if (ret)
 		return ret;
 
+	if (byt_rt5640_quirk & BYT_RT5640_MONO_SPEAKER) {
+		ret = snd_soc_dapm_add_routes(&card->dapm,
+					byt_rt5640_mono_spk_map,
+					ARRAY_SIZE(byt_rt5640_mono_spk_map));
+	} else {
+		ret = snd_soc_dapm_add_routes(&card->dapm,
+					byt_rt5640_stereo_spk_map,
+					ARRAY_SIZE(byt_rt5640_stereo_spk_map));
+	}
+	if (ret)
+		return ret;
+
 	if (byt_rt5640_quirk & BYT_RT5640_DMIC_EN) {
 		ret = rt5640_dmic_enable(codec, 0, 0);
 		if (ret)