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Commit 7c2fcccc authored by Daniel Mack's avatar Daniel Mack Committed by Mark Brown
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ASoC: sta350: add support for bits in miscellaneous registers 



Add support for RPDNEN, NSHHPEN, BRIDGOFF, CPWMEN and PNDLSL, and add DT
bindings to access them.

Signed-off-by: default avatarDaniel Mack <zonque@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 09af62ff

Documentation/devicetree/bindings/sound/st,sta350.txt

+23 −1
Original line number Diff line number Diff line
@@ -86,7 +86,29 @@ Optional properties: 
  -  st,invalid-input-detect-mute:

	If present, automatic invalid input detect mute is enabled.





  -  st,activate-mute-output:

	If present, a mute output will be activated in ase the volume will

	reach a value lower than -76 dBFS.



  -  st,bridge-immediate-off:

	If present, the bridge will be switched off immediately after the

	power-down-gpio goes low. Otherwise, the bridge will wait for 13

	million clock cycles to pass before shutting down.



  -  st,noise-shape-dc-cut:

	If present, the noise-shaping technique on the DC cutoff filter are

	enabled.



  -  st,powerdown-master-volume:

	If present, the power-down pin and I2C power-down functions will

	act on the master volume. Otherwise, the functions will act on the

	mute commands.



  -  st,powerdown-delay-divider:

	If present, the bridge power-down time will be divided by the provided

	value. If not specified, a divider of 1 will be used. Allowed values

	are 1, 2, 4, 8, 16, 32, 64 and 128.

	This property has to be specified as '/bits/ 8' value.



Example:

include/sound/sta350.h

+5 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ struct sta350_platform_data { 
	u8 ch3_output_mapping;

	u8 ffx_power_output_mode;

	u8 drop_compensation_ns;

	u8 powerdown_delay_divider;

	unsigned int thermal_warning_recovery:1;

	unsigned int thermal_warning_adjustment:1;

	unsigned int fault_detect_recovery:1;
@@ -47,6 +48,10 @@ struct sta350_platform_data { 
	unsigned int odd_pwm_speed_mode:1;

	unsigned int distortion_compensation:1;

	unsigned int invalid_input_detect_mute:1;

	unsigned int activate_mute_output:1;

	unsigned int bridge_immediate_off:1;

	unsigned int noise_shape_dc_cut:1;

	unsigned int powerdown_master_vol:1;

};



#endif /* __LINUX_SND__STA350_H */

sound/soc/codecs/sta350.c

+45 −0
Original line number Diff line number Diff line
@@ -1020,6 +1020,29 @@ static int sta350_probe(struct snd_soc_codec *codec) 
			   pdata->ch3_output_mapping

				<< STA350_CxCFG_OM_SHIFT);



	/* miscellaneous registers */

	regmap_update_bits(sta350->regmap, STA350_MISC1,

			   STA350_MISC1_CPWMEN,

			   pdata->activate_mute_output ?

				STA350_MISC1_CPWMEN : 0);

	regmap_update_bits(sta350->regmap, STA350_MISC1,

			   STA350_MISC1_BRIDGOFF,

			   pdata->bridge_immediate_off ?

				STA350_MISC1_BRIDGOFF : 0);

	regmap_update_bits(sta350->regmap, STA350_MISC1,

			   STA350_MISC1_NSHHPEN,

			   pdata->noise_shape_dc_cut ?

				STA350_MISC1_NSHHPEN : 0);

	regmap_update_bits(sta350->regmap, STA350_MISC1,

			   STA350_MISC1_RPDNEN,

			   pdata->powerdown_master_vol ?

				STA350_MISC1_RPDNEN: 0);



	regmap_update_bits(sta350->regmap, STA350_MISC2,

			   STA350_MISC2_PNDLSL_MASK,

			   pdata->powerdown_delay_divider

				<< STA350_MISC2_PNDLSL_SHIFT);



	/* initialize coefficient shadow RAM with reset values */

	for (i = 4; i <= 49; i += 5)

		sta350->coef_shadow[i] = 0x400000;
@@ -1094,6 +1117,7 @@ static int sta350_probe_dt(struct device *dev, struct sta350_priv *sta350) 
	struct sta350_platform_data *pdata;

	const char *ffx_power_mode;

	u16 tmp;

	u8 tmp8;



	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);

	if (!pdata)
@@ -1158,6 +1182,27 @@ static int sta350_probe_dt(struct device *dev, struct sta350_priv *sta350) 
	if (of_get_property(np, "st,invalid-input-detect-mute", NULL))

		pdata->invalid_input_detect_mute = 1;



	/* MISC */

	if (of_get_property(np, "st,activate-mute-output", NULL))

		pdata->activate_mute_output = 1;



	if (of_get_property(np, "st,bridge-immediate-off", NULL))

		pdata->bridge_immediate_off = 1;



	if (of_get_property(np, "st,noise-shape-dc-cut", NULL))

		pdata->noise_shape_dc_cut = 1;



	if (of_get_property(np, "st,powerdown-master-volume", NULL))

		pdata->powerdown_master_vol = 1;



	if (!of_property_read_u8(np, "st,powerdown-delay-divider", &tmp8)) {

		if (is_power_of_2(tmp8) && tmp8 >= 1 && tmp8 <= 128)

			pdata->powerdown_delay_divider = ilog2(tmp8);

		else

			dev_warn(dev, "Unsupported powerdown delay divider %d\n",

				 tmp8);

	}



	sta350->pdata = pdata;



	return 0;

sound/soc/codecs/sta350.h

+10 −0
Original line number Diff line number Diff line
@@ -225,4 +225,14 @@ 
#define STA350_C3_MIX1		60

#define STA350_C3_MIX2		61



/* miscellaneous register 1 */

#define STA350_MISC1_CPWMEN	BIT(2)

#define STA350_MISC1_BRIDGOFF	BIT(5)

#define STA350_MISC1_NSHHPEN	BIT(6)

#define STA350_MISC1_RPDNEN	BIT(7)



/* miscellaneous register 2 */

#define STA350_MISC2_PNDLSL_MASK	0x1c

#define STA350_MISC2_PNDLSL_SHIFT	2



#endif /* _ASOC_STA_350_H */