ASoC: rt5514: expose Hotword Model control

This change exposes mixer control 'Hotword Model' for switching
hotword model in runtime. This new function requires updated
firmware to load hotword model at address 0x4ff80000.
Signed-off-by: Hsin-Yu Chao <hychao@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/rt5514.c

@@ -302,6 +302,7 @@ static int rt5514_dsp_voice_wake_up_put(struct snd_kcontrol *kcontrol,
 	struct rt5514_priv *rt5514 = snd_soc_component_get_drvdata(component);
 	struct snd_soc_codec *codec = rt5514->codec;
 	const struct firmware *fw = NULL;
+	int ret = 0;
 
 	if (ucontrol->value.integer.value[0] == rt5514->dsp_enabled)
 		return 0;
@@ -338,6 +339,27 @@ static int rt5514_dsp_voice_wake_up_put(struct snd_kcontrol *kcontrol,
 				fw = NULL;
 			}
 
+			if (rt5514->model_buf && rt5514->model_len) {
+				ret = rt5514_spi_burst_write(0x4ff80000,
+					rt5514->model_buf,
+					((rt5514->model_len / 8) + 1) * 8);
+				if (ret) {
+					dev_err(codec->dev,
+						"Model load failed %d\n", ret);
+					return ret;
+				}
+			} else {
+				request_firmware(&fw, RT5514_FIRMWARE3,
+						 codec->dev);
+				if (fw) {
+					rt5514_spi_burst_write(0x4ff80000,
+						fw->data,
+						((fw->size/8)+1)*8);
+					release_firmware(fw);
+					fw = NULL;
+				}
+			}
+
 			/* DSP run */
 			regmap_write(rt5514->i2c_regmap, 0x18002f00,
 				0x00055148);
@@ -352,6 +374,34 @@ static int rt5514_dsp_voice_wake_up_put(struct snd_kcontrol *kcontrol,
 	return 0;
 }
 
+static int rt5514_hotword_model_put(struct snd_kcontrol *kcontrol,
+		const unsigned int __user *bytes, unsigned int size)
+{
+	struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+	struct rt5514_priv *rt5514 = snd_soc_component_get_drvdata(component);
+	struct snd_soc_codec *codec = rt5514->codec;
+	int ret = 0;
+
+	if (rt5514->model_buf || rt5514->model_len < size) {
+		if (rt5514->model_buf)
+			devm_kfree(codec->dev, rt5514->model_buf);
+		rt5514->model_buf = devm_kmalloc(codec->dev, size, GFP_KERNEL);
+		if (!rt5514->model_buf) {
+			ret = -ENOMEM;
+			goto done;
+		}
+	}
+
+	/* Skips the TLV header. */
+	bytes += 2;
+
+	if (copy_from_user(rt5514->model_buf, bytes, size))
+		ret = -EFAULT;
+done:
+	rt5514->model_len = (ret ? 0 : size);
+	return ret;
+}
+
 static const struct snd_kcontrol_new rt5514_snd_controls[] = {
 	SOC_DOUBLE_TLV("MIC Boost Volume", RT5514_ANA_CTRL_MICBST,
 		RT5514_SEL_BSTL_SFT, RT5514_SEL_BSTR_SFT, 8, 0, bst_tlv),
@@ -363,6 +413,8 @@ static const struct snd_kcontrol_new rt5514_snd_controls[] = {
 		adc_vol_tlv),
 	SOC_SINGLE_EXT("DSP Voice Wake Up", SND_SOC_NOPM, 0, 1, 0,
 		rt5514_dsp_voice_wake_up_get, rt5514_dsp_voice_wake_up_put),
+	SND_SOC_BYTES_TLV("Hotword Model", 0x8504,
+		NULL, rt5514_hotword_model_put),
 };
 
 /* ADC Mixer*/

sound/soc/codecs/rt5514.h

@@ -255,6 +255,7 @@
 
 #define RT5514_FIRMWARE1	"rt5514_dsp_fw1.bin"
 #define RT5514_FIRMWARE2	"rt5514_dsp_fw2.bin"
+#define RT5514_FIRMWARE3	"rt5514_dsp_fw3.bin"
 
 /* System Clock Source */
 enum {
@@ -281,6 +282,8 @@ struct rt5514_priv {
 	int pll_in;
 	int pll_out;
 	int dsp_enabled;
+	u8 *model_buf;
+	unsigned int model_len;
 };
 
 #endif /* __RT5514_H__ */