Commit 8277df3c authored by Maciej S. Szmigiero's avatar Maciej S. Szmigiero Committed by Mark Brown
Browse files

ASoC: fsl_ssi: enable IPG clock during AC'97 reg access 



IPG clock have to be enabled during AC'97 CODEC register
access in fsl_ssi driver.

Signed-off-by: default avatarMaciej Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent bc0195aa

sound/soc/fsl/fsl_ssi.c

+19 −0
Original line number Diff line number Diff line
@@ -1127,10 +1127,17 @@ static void fsl_ssi_ac97_write(struct snd_ac97 *ac97, unsigned short reg, 
	struct regmap *regs = fsl_ac97_data->regs;

	unsigned int lreg;

	unsigned int lval;

	int ret;



	if (reg > 0x7f)

		return;



	ret = clk_prepare_enable(fsl_ac97_data->clk);

	if (ret) {

		pr_err("ac97 write clk_prepare_enable failed: %d\n",

			ret);

		return;

	}



	lreg = reg <<  12;

	regmap_write(regs, CCSR_SSI_SACADD, lreg);
@@ -1141,6 +1148,8 @@ static void fsl_ssi_ac97_write(struct snd_ac97 *ac97, unsigned short reg, 
	regmap_update_bits(regs, CCSR_SSI_SACNT, CCSR_SSI_SACNT_RDWR_MASK,

			CCSR_SSI_SACNT_WR);

	udelay(100);



	clk_disable_unprepare(fsl_ac97_data->clk);

}



static unsigned short fsl_ssi_ac97_read(struct snd_ac97 *ac97,
@@ -1151,6 +1160,14 @@ static unsigned short fsl_ssi_ac97_read(struct snd_ac97 *ac97, 
	unsigned short val = -1;

	u32 reg_val;

	unsigned int lreg;

	int ret;



	ret = clk_prepare_enable(fsl_ac97_data->clk);

	if (ret) {

		pr_err("ac97 read clk_prepare_enable failed: %d\n",

			ret);

		return -1;

	}



	lreg = (reg & 0x7f) <<  12;

	regmap_write(regs, CCSR_SSI_SACADD, lreg);
@@ -1162,6 +1179,8 @@ static unsigned short fsl_ssi_ac97_read(struct snd_ac97 *ac97, 
	regmap_read(regs, CCSR_SSI_SACDAT, &reg_val);

	val = (reg_val >> 4) & 0xffff;



	clk_disable_unprepare(fsl_ac97_data->clk);



	return val;

}