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Commit 3f790b43 authored by Patrick Lai's avatar Patrick Lai Committed by Banajit Goswami
Browse files

ASoC: msm: msm8994: add sample rate mixer control for SLIM0 TX back-end 



SLIMBUS_0_TX back-end is always being fixed up to 48khz currently.
As part of effort to support true greater than 48khz recording,
expose mixer control to allow 48khz, 96khz, and 19khz sample rate
selection.

Signed-off-by: default avatarPatrick Lai <plai@codeaurora.org>
Change-Id: Ia202ef066a394924eb9574ef4e3115611493b84a
parent c5bf8ca2

sound/soc/msm/msm8994.c

+59 −1
Original line number Diff line number Diff line
@@ -92,6 +92,7 @@ struct msm8994_asoc_mach_data { 
};



static int slim0_rx_sample_rate = SAMPLING_RATE_48KHZ;

static int slim0_tx_sample_rate = SAMPLING_RATE_48KHZ;

static int slim0_rx_bit_format = SNDRV_PCM_FORMAT_S16_LE;

static int slim0_tx_bit_format = SNDRV_PCM_FORMAT_S16_LE;

static int hdmi_rx_bit_format = SNDRV_PCM_FORMAT_S16_LE;
@@ -799,6 +800,61 @@ static int msm_slim_0_rx_ch_put(struct snd_kcontrol *kcontrol, 
	return 1;

}



static int slim0_tx_sample_rate_get(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	int sample_rate_val = 0;



	switch (slim0_tx_sample_rate) {

	case SAMPLING_RATE_192KHZ:

		sample_rate_val = 2;

		break;

	case SAMPLING_RATE_96KHZ:

		sample_rate_val = 1;

		break;

	case SAMPLING_RATE_48KHZ:

	default:

		sample_rate_val = 0;

		break;

	}



	ucontrol->value.integer.value[0] = sample_rate_val;

	pr_debug("%s: slim0_tx_sample_rate = %d\n", __func__,

				slim0_tx_sample_rate);



	return 0;

}



static int slim0_tx_sample_rate_put(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	int rc = 0;



	pr_debug("%s: ucontrol value = %ld\n", __func__,

			ucontrol->value.integer.value[0]);



	switch (ucontrol->value.integer.value[0]) {

	case 2:

		slim0_tx_sample_rate = SAMPLING_RATE_192KHZ;

		break;

	case 1:

		slim0_tx_sample_rate = SAMPLING_RATE_96KHZ;

		break;

	case 0:

		slim0_tx_sample_rate = SAMPLING_RATE_48KHZ;

		break;

	default:

		rc = -EINVAL;

		pr_err("%s: invalid sample rate being passed\n", __func__);

		break;

	}



	pr_debug("%s: slim0_tx_sample_rate = %d\n", __func__,

			slim0_tx_sample_rate);



	return rc;

}



static int slim0_tx_bit_format_get(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{
@@ -1548,7 +1604,7 @@ static int msm_slim_0_tx_be_hw_params_fixup(struct snd_soc_pcm_runtime *rtd, 
	pr_debug("%s()\n", __func__);

	param_set_mask(params, SNDRV_PCM_HW_PARAM_FORMAT,

				   slim0_tx_bit_format);

	rate->min = rate->max = 48000;

	rate->min = rate->max = slim0_tx_sample_rate;

	channels->min = channels->max = msm_slim_0_tx_ch;



	return 0;
@@ -1662,6 +1718,8 @@ static const struct snd_kcontrol_new msm_snd_controls[] = { 
			hdmi_rx_sample_rate_get, hdmi_rx_sample_rate_put),

	SOC_ENUM_EXT("SLIM_0_TX Format", msm_snd_enum[4],

			slim0_tx_bit_format_get, slim0_tx_bit_format_put),

	SOC_ENUM_EXT("SLIM_0_TX SampleRate", msm_snd_enum[5],

			slim0_tx_sample_rate_get, slim0_tx_sample_rate_put),

};



static bool msm8994_swap_gnd_mic(struct snd_soc_codec *codec)