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Commit f48af4ff authored by Xiaoyu Ye's avatar Xiaoyu Ye
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ASoC: sdm845: add support to update TDM CLK frequency at runtime 



TDM CLK frequency needs to be updated at runtime to use the correct
CLK setup.

Change-Id: Ib42fedca3cbf41b85ca121ca04cc994bf8ad4d39
Signed-off-by: default avatarXiaoyu Ye <benyxy@codeaurora.org>
parent 2b6adc8b

asoc/sdm845.c

+9 −1
Original line number Diff line number Diff line
@@ -4492,7 +4492,7 @@ static int sdm845_tdm_snd_hw_params(struct snd_pcm_substream *substream, 
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;

	int ret = 0;

	int channels, slot_width, slots;

	unsigned int slot_mask;

	unsigned int slot_mask, rate, clk_freq;

	unsigned int slot_offset[8] = {0, 4, 8, 12, 16, 20, 24, 28};



	pr_debug("%s: dai id = 0x%x\n", __func__, cpu_dai->id);
@@ -4524,8 +4524,16 @@ static int sdm845_tdm_snd_hw_params(struct snd_pcm_substream *substream, 
	} else {

		pr_err("%s: invalid use case, err:%d\n",

			__func__, ret);

		goto end;

	}



	rate = params_rate(params);

	clk_freq = rate * slot_width * slots;

	ret = snd_soc_dai_set_sysclk(cpu_dai, 0, clk_freq, SND_SOC_CLOCK_OUT);

	if (ret < 0)

		pr_err("%s: failed to set tdm clk, err:%d\n",

			__func__, ret);



end:

	return ret;

}