linux-kernel - Re: [PATCH v2] ASoC: codecs: msm8916-wcd-analog: configure micbias in mbhc setup

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Date:   Tue, 3 Oct 2017 21:42:18 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Damien Riegel <damien.riegel@...oirfairelinux.com>,
        alsa-devel@...a-project.org, linux-kernel@...r.kernel.org
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, kernel@...oirfairelinux.com
Subject: Re: [PATCH v2] ASoC: codecs: msm8916-wcd-analog: configure micbias in
 mbhc setup



On 03/10/17 14:27, Damien Riegel wrote:
> The very first time a headset is plugged in, detection is unreliable
> because bias hasn't been configured yet, it's done once a mechanical
> insertion interrupt has been triggered, so following insertions (and
> thus detections) are not affected.
> 
> To fix the very first detection, the bias must also be configured in the
> function that setup the MBHC. Move pm8916_wcd_setup_mbhc after
> pm8916_mbhc_configure_bias to avoid a forward declaration.
> 
> Signed-off-by: Damien Riegel <damien.riegel@...oirfairelinux.com>
> ---
> Changes in v2:
>   - squash the two patches in one patch only

I do not see the squashed patches here??
It looks like its just the first patch.


Thanks,
srini
> 
>   sound/soc/codecs/msm8916-wcd-analog.c | 94 +++++++++++++++++++----------------
>   1 file changed, 50 insertions(+), 44 deletions(-)
> 
> diff --git a/sound/soc/codecs/msm8916-wcd-analog.c b/sound/soc/codecs/msm8916-wcd-analog.c
> index f562f2d86907..71494e9dbdcb 100644
> --- a/sound/soc/codecs/msm8916-wcd-analog.c
> +++ b/sound/soc/codecs/msm8916-wcd-analog.c
> @@ -443,50 +443,6 @@ static int pm8916_wcd_analog_enable_micbias_int1(struct
>   						     wcd->micbias1_cap_mode);
>   }
>   
> -static void pm8916_wcd_setup_mbhc(struct pm8916_wcd_analog_priv *wcd)
> -{
> -	struct snd_soc_codec *codec = wcd->codec;
> -	u32 plug_type = 0;
> -	u32 int_en_mask;
> -
> -	snd_soc_write(codec, CDC_A_MBHC_DET_CTL_1,
> -		      CDC_A_MBHC_DET_CTL_L_DET_EN |
> -		      CDC_A_MBHC_DET_CTL_MECH_DET_TYPE_INSERTION |
> -		      CDC_A_MBHC_DET_CTL_MIC_CLAMP_CTL_AUTO |
> -		      CDC_A_MBHC_DET_CTL_MBHC_BIAS_EN);
> -
> -	if (wcd->hphl_jack_type_normally_open)
> -		plug_type |= CDC_A_HPHL_PLUG_TYPE_NO;
> -
> -	if (wcd->gnd_jack_type_normally_open)
> -		plug_type |= CDC_A_GND_PLUG_TYPE_NO;
> -
> -	snd_soc_write(codec, CDC_A_MBHC_DET_CTL_2,
> -		      CDC_A_MBHC_DET_CTL_HS_L_DET_PULL_UP_CTRL_I_3P0 |
> -		      CDC_A_MBHC_DET_CTL_HS_L_DET_COMPA_CTRL_V0P9_VDD |
> -		      plug_type |
> -		      CDC_A_MBHC_DET_CTL_HPHL_100K_TO_GND_EN);
> -
> -
> -	snd_soc_write(codec, CDC_A_MBHC_DBNC_TIMER,
> -		      CDC_A_MBHC_DBNC_TIMER_INSREM_DBNC_T_256_MS |
> -		      CDC_A_MBHC_DBNC_TIMER_BTN_DBNC_T_16MS);
> -
> -	/* enable MBHC clock */
> -	snd_soc_update_bits(codec, CDC_D_CDC_DIG_CLK_CTL,
> -			    DIG_CLK_CTL_D_MBHC_CLK_EN_MASK,
> -			    DIG_CLK_CTL_D_MBHC_CLK_EN);
> -
> -	int_en_mask = MBHC_SWITCH_INT;
> -	if (wcd->mbhc_btn_enabled)
> -		int_en_mask |= MBHC_BUTTON_PRESS_DET | MBHC_BUTTON_RELEASE_DET;
> -
> -	snd_soc_update_bits(codec, CDC_D_INT_EN_CLR, int_en_mask, 0);
> -	snd_soc_update_bits(codec, CDC_D_INT_EN_SET, int_en_mask, int_en_mask);
> -	wcd->mbhc_btn0_released = false;
> -	wcd->detect_accessory_type = true;
> -}
> -
>   static int pm8916_mbhc_configure_bias(struct pm8916_wcd_analog_priv *priv,
>   				      bool micbias2_enabled)
>   {
> @@ -534,6 +490,56 @@ static int pm8916_mbhc_configure_bias(struct pm8916_wcd_analog_priv *priv,
>   	return 0;
>   }
>   
> +static void pm8916_wcd_setup_mbhc(struct pm8916_wcd_analog_priv *wcd)
> +{
> +	struct snd_soc_codec *codec = wcd->codec;
> +	bool micbias_enabled = false;
> +	u32 plug_type = 0;
> +	u32 int_en_mask;
> +
> +	snd_soc_write(codec, CDC_A_MBHC_DET_CTL_1,
> +		      CDC_A_MBHC_DET_CTL_L_DET_EN |
> +		      CDC_A_MBHC_DET_CTL_MECH_DET_TYPE_INSERTION |
> +		      CDC_A_MBHC_DET_CTL_MIC_CLAMP_CTL_AUTO |
> +		      CDC_A_MBHC_DET_CTL_MBHC_BIAS_EN);
> +
> +	if (wcd->hphl_jack_type_normally_open)
> +		plug_type |= CDC_A_HPHL_PLUG_TYPE_NO;
> +
> +	if (wcd->gnd_jack_type_normally_open)
> +		plug_type |= CDC_A_GND_PLUG_TYPE_NO;
> +
> +	snd_soc_write(codec, CDC_A_MBHC_DET_CTL_2,
> +		      CDC_A_MBHC_DET_CTL_HS_L_DET_PULL_UP_CTRL_I_3P0 |
> +		      CDC_A_MBHC_DET_CTL_HS_L_DET_COMPA_CTRL_V0P9_VDD |
> +		      plug_type |
> +		      CDC_A_MBHC_DET_CTL_HPHL_100K_TO_GND_EN);
> +
> +
> +	snd_soc_write(codec, CDC_A_MBHC_DBNC_TIMER,
> +		      CDC_A_MBHC_DBNC_TIMER_INSREM_DBNC_T_256_MS |
> +		      CDC_A_MBHC_DBNC_TIMER_BTN_DBNC_T_16MS);
> +
> +	/* enable MBHC clock */
> +	snd_soc_update_bits(codec, CDC_D_CDC_DIG_CLK_CTL,
> +			    DIG_CLK_CTL_D_MBHC_CLK_EN_MASK,
> +			    DIG_CLK_CTL_D_MBHC_CLK_EN);
> +
> +	if (snd_soc_read(codec, CDC_A_MICB_2_EN) & CDC_A_MICB_2_EN_ENABLE)
> +		micbias_enabled = true;
> +
> +	pm8916_mbhc_configure_bias(wcd, micbias_enabled);
> +
> +	int_en_mask = MBHC_SWITCH_INT;
> +	if (wcd->mbhc_btn_enabled)
> +		int_en_mask |= MBHC_BUTTON_PRESS_DET | MBHC_BUTTON_RELEASE_DET;
> +
> +	snd_soc_update_bits(codec, CDC_D_INT_EN_CLR, int_en_mask, 0);
> +	snd_soc_update_bits(codec, CDC_D_INT_EN_SET, int_en_mask, int_en_mask);
> +	wcd->mbhc_btn0_released = false;
> +	wcd->detect_accessory_type = true;
> +}
> +
>   static int pm8916_wcd_analog_enable_micbias_int2(struct
>   						  snd_soc_dapm_widget
>   						  *w, struct snd_kcontrol
>