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SubjectRe: [PATCH v4 8/9] ASoC: atmel-classd: remove aclk clock
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On 25/07/2017 at 09:37, Quentin Schulz wrote:
> Since gclk (generated-clk) is now able to determine the rate of the
> audio_pll, there is no need for classd to have a direct phandle to the
> audio_pll while already having a phandle to gclk.
>
> Thus, remove all mentions to aclk in classd driver and update macros and
> variable names.
>
> Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
> Acked-by: Mark Brown <broonie@kernel.org>

Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>

> ---
> sound/soc/atmel/atmel-classd.c | 47 ++++++++++-------------------------
> 1 file changed, 14 insertions(+), 33 deletions(-)
>
> diff --git a/sound/soc/atmel/atmel-classd.c b/sound/soc/atmel/atmel-classd.c
> index b7ef8c5..be6b775 100644
> --- a/sound/soc/atmel/atmel-classd.c
> +++ b/sound/soc/atmel/atmel-classd.c
> @@ -32,7 +32,6 @@ struct atmel_classd {
> struct regmap *regmap;
> struct clk *pclk;
> struct clk *gclk;
> - struct clk *aclk;
> int irq;
> const struct atmel_classd_pdata *pdata;
> };
> @@ -330,11 +329,6 @@ static int atmel_classd_codec_dai_startup(struct snd_pcm_substream *substream,
> {
> struct snd_soc_pcm_runtime *rtd = substream->private_data;
> struct atmel_classd *dd = snd_soc_card_get_drvdata(rtd->card);
> - int ret;
> -
> - ret = clk_prepare_enable(dd->aclk);
> - if (ret)
> - return ret;
>
> return clk_prepare_enable(dd->gclk);
> }
> @@ -357,31 +351,31 @@ static int atmel_classd_codec_dai_digital_mute(struct snd_soc_dai *codec_dai,
> return 0;
> }
>
> -#define CLASSD_ACLK_RATE_11M2896_MPY_8 (112896 * 100 * 8)
> -#define CLASSD_ACLK_RATE_12M288_MPY_8 (12288 * 1000 * 8)
> +#define CLASSD_GCLK_RATE_11M2896_MPY_8 (112896 * 100 * 8)
> +#define CLASSD_GCLK_RATE_12M288_MPY_8 (12288 * 1000 * 8)
>
> static struct {
> int rate;
> int sample_rate;
> int dsp_clk;
> - unsigned long aclk_rate;
> + unsigned long gclk_rate;
> } const sample_rates[] = {
> { 8000, CLASSD_INTPMR_FRAME_8K,
> - CLASSD_INTPMR_DSP_CLK_FREQ_12M288, CLASSD_ACLK_RATE_12M288_MPY_8 },
> + CLASSD_INTPMR_DSP_CLK_FREQ_12M288, CLASSD_GCLK_RATE_12M288_MPY_8 },
> { 16000, CLASSD_INTPMR_FRAME_16K,
> - CLASSD_INTPMR_DSP_CLK_FREQ_12M288, CLASSD_ACLK_RATE_12M288_MPY_8 },
> + CLASSD_INTPMR_DSP_CLK_FREQ_12M288, CLASSD_GCLK_RATE_12M288_MPY_8 },
> { 32000, CLASSD_INTPMR_FRAME_32K,
> - CLASSD_INTPMR_DSP_CLK_FREQ_12M288, CLASSD_ACLK_RATE_12M288_MPY_8 },
> + CLASSD_INTPMR_DSP_CLK_FREQ_12M288, CLASSD_GCLK_RATE_12M288_MPY_8 },
> { 48000, CLASSD_INTPMR_FRAME_48K,
> - CLASSD_INTPMR_DSP_CLK_FREQ_12M288, CLASSD_ACLK_RATE_12M288_MPY_8 },
> + CLASSD_INTPMR_DSP_CLK_FREQ_12M288, CLASSD_GCLK_RATE_12M288_MPY_8 },
> { 96000, CLASSD_INTPMR_FRAME_96K,
> - CLASSD_INTPMR_DSP_CLK_FREQ_12M288, CLASSD_ACLK_RATE_12M288_MPY_8 },
> + CLASSD_INTPMR_DSP_CLK_FREQ_12M288, CLASSD_GCLK_RATE_12M288_MPY_8 },
> { 22050, CLASSD_INTPMR_FRAME_22K,
> - CLASSD_INTPMR_DSP_CLK_FREQ_11M2896, CLASSD_ACLK_RATE_11M2896_MPY_8 },
> + CLASSD_INTPMR_DSP_CLK_FREQ_11M2896, CLASSD_GCLK_RATE_11M2896_MPY_8 },
> { 44100, CLASSD_INTPMR_FRAME_44K,
> - CLASSD_INTPMR_DSP_CLK_FREQ_11M2896, CLASSD_ACLK_RATE_11M2896_MPY_8 },
> + CLASSD_INTPMR_DSP_CLK_FREQ_11M2896, CLASSD_GCLK_RATE_11M2896_MPY_8 },
> { 88200, CLASSD_INTPMR_FRAME_88K,
> - CLASSD_INTPMR_DSP_CLK_FREQ_11M2896, CLASSD_ACLK_RATE_11M2896_MPY_8 },
> + CLASSD_INTPMR_DSP_CLK_FREQ_11M2896, CLASSD_GCLK_RATE_11M2896_MPY_8 },
> };
>
> static int
> @@ -410,13 +404,12 @@ atmel_classd_codec_dai_hw_params(struct snd_pcm_substream *substream,
> }
>
> dev_dbg(codec->dev,
> - "Selected SAMPLE_RATE of %dHz, ACLK_RATE of %ldHz\n",
> - sample_rates[best].rate, sample_rates[best].aclk_rate);
> + "Selected SAMPLE_RATE of %dHz, GCLK_RATE of %ldHz\n",
> + sample_rates[best].rate, sample_rates[best].gclk_rate);
>
> clk_disable_unprepare(dd->gclk);
> - clk_disable_unprepare(dd->aclk);
>
> - ret = clk_set_rate(dd->aclk, sample_rates[best].aclk_rate);
> + ret = clk_set_rate(dd->gclk, sample_rates[best].gclk_rate);
> if (ret)
> return ret;
>
> @@ -426,10 +419,6 @@ atmel_classd_codec_dai_hw_params(struct snd_pcm_substream *substream,
>
> snd_soc_update_bits(codec, CLASSD_INTPMR, mask, val);
>
> - ret = clk_prepare_enable(dd->aclk);
> - if (ret)
> - return ret;
> -
> return clk_prepare_enable(dd->gclk);
> }
>
> @@ -441,7 +430,6 @@ atmel_classd_codec_dai_shutdown(struct snd_pcm_substream *substream,
> struct atmel_classd *dd = snd_soc_card_get_drvdata(rtd->card);
>
> clk_disable_unprepare(dd->gclk);
> - clk_disable_unprepare(dd->aclk);
> }
>
> static int atmel_classd_codec_dai_prepare(struct snd_pcm_substream *substream,
> @@ -596,13 +584,6 @@ static int atmel_classd_probe(struct platform_device *pdev)
> return ret;
> }
>
> - dd->aclk = devm_clk_get(dev, "aclk");
> - if (IS_ERR(dd->aclk)) {
> - ret = PTR_ERR(dd->aclk);
> - dev_err(dev, "failed to get audio clock: %d\n", ret);
> - return ret;
> - }
> -
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> io_base = devm_ioremap_resource(dev, res);
> if (IS_ERR(io_base)) {
>


--
Nicolas Ferre

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