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Date: Tue, 16 Feb 2016 10:54:21 +0800
From: "Wu, Songjun" <songjun.wu@...el.com>
To: Nicolas Ferre <nicolas.ferre@...el.com>, <broonie@...nel.org>
CC: <linux-arm-kernel@...ts.infradead.org>,
Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Liam Girdwood <lgirdwood@...il.com>,
Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>, <linux-kernel@...r.kernel.org>,
<alsa-devel@...a-project.org>
Subject: Re: [PATCH] ASoC: atmel_ssc_dai: distinguish the different SSC
Any comments on this patch?
On 1/13/2016 23:08, Nicolas Ferre wrote:
> Le 13/01/2016 07:35, Songjun Wu a écrit :
>> Cpu_dai id always equals 0, can't distinguish the
>> different SSC. Use platform_device id to record
>> and distinguish the different SSC.
>>
>> Signed-off-by: Songjun Wu <songjun.wu@...el.com>
>
> It seems okay:
> Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>
>
>> ---
>>
>> drivers/misc/atmel-ssc.c | 1 +
>> sound/soc/atmel/atmel_ssc_dai.c | 27 ++++++++++++++++++---------
>> 2 files changed, 19 insertions(+), 9 deletions(-)
>>
>> diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c
>> index e11a0bd..0516ecd 100644
>> --- a/drivers/misc/atmel-ssc.c
>> +++ b/drivers/misc/atmel-ssc.c
>> @@ -34,6 +34,7 @@ struct ssc_device *ssc_request(unsigned int ssc_num)
>> if (ssc->pdev->dev.of_node) {
>> if (of_alias_get_id(ssc->pdev->dev.of_node, "ssc")
>> == ssc_num) {
>> + ssc->pdev->id = ssc_num;
>> ssc_valid = 1;
>> break;
>> }
>> diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c
>> index ba8def5..2768970 100644
>> --- a/sound/soc/atmel/atmel_ssc_dai.c
>> +++ b/sound/soc/atmel/atmel_ssc_dai.c
>> @@ -285,7 +285,8 @@ static int atmel_ssc_hw_rule_rate(struct snd_pcm_hw_params *params,
>> static int atmel_ssc_startup(struct snd_pcm_substream *substream,
>> struct snd_soc_dai *dai)
>> {
>> - struct atmel_ssc_info *ssc_p = &ssc_info[dai->id];
>> + struct platform_device *pdev = to_platform_device(dai->dev);
>> + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id];
>> struct atmel_pcm_dma_params *dma_params;
>> int dir, dir_mask;
>> int ret;
>> @@ -346,7 +347,8 @@ static int atmel_ssc_startup(struct snd_pcm_substream *substream,
>> static void atmel_ssc_shutdown(struct snd_pcm_substream *substream,
>> struct snd_soc_dai *dai)
>> {
>> - struct atmel_ssc_info *ssc_p = &ssc_info[dai->id];
>> + struct platform_device *pdev = to_platform_device(dai->dev);
>> + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id];
>> struct atmel_pcm_dma_params *dma_params;
>> int dir, dir_mask;
>>
>> @@ -392,7 +394,8 @@ static void atmel_ssc_shutdown(struct snd_pcm_substream *substream,
>> static int atmel_ssc_set_dai_fmt(struct snd_soc_dai *cpu_dai,
>> unsigned int fmt)
>> {
>> - struct atmel_ssc_info *ssc_p = &ssc_info[cpu_dai->id];
>> + struct platform_device *pdev = to_platform_device(cpu_dai->dev);
>> + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id];
>>
>> ssc_p->daifmt = fmt;
>> return 0;
>> @@ -404,7 +407,8 @@ static int atmel_ssc_set_dai_fmt(struct snd_soc_dai *cpu_dai,
>> static int atmel_ssc_set_dai_clkdiv(struct snd_soc_dai *cpu_dai,
>> int div_id, int div)
>> {
>> - struct atmel_ssc_info *ssc_p = &ssc_info[cpu_dai->id];
>> + struct platform_device *pdev = to_platform_device(cpu_dai->dev);
>> + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id];
>>
>> switch (div_id) {
>> case ATMEL_SSC_CMR_DIV:
>> @@ -445,7 +449,8 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
>> struct snd_pcm_hw_params *params,
>> struct snd_soc_dai *dai)
>> {
>> - int id = dai->id;
>> + struct platform_device *pdev = to_platform_device(dai->dev);
>> + int id = pdev->id;
>> struct atmel_ssc_info *ssc_p = &ssc_info[id];
>> struct ssc_device *ssc = ssc_p->ssc;
>> struct atmel_pcm_dma_params *dma_params;
>> @@ -772,7 +777,8 @@ static int atmel_ssc_hw_params(struct snd_pcm_substream *substream,
>> static int atmel_ssc_prepare(struct snd_pcm_substream *substream,
>> struct snd_soc_dai *dai)
>> {
>> - struct atmel_ssc_info *ssc_p = &ssc_info[dai->id];
>> + struct platform_device *pdev = to_platform_device(dai->dev);
>> + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id];
>> struct atmel_pcm_dma_params *dma_params;
>> int dir;
>>
>> @@ -795,7 +801,8 @@ static int atmel_ssc_prepare(struct snd_pcm_substream *substream,
>> static int atmel_ssc_trigger(struct snd_pcm_substream *substream,
>> int cmd, struct snd_soc_dai *dai)
>> {
>> - struct atmel_ssc_info *ssc_p = &ssc_info[dai->id];
>> + struct platform_device *pdev = to_platform_device(dai->dev);
>> + struct atmel_ssc_info *ssc_p = &ssc_info[pdev->id];
>> struct atmel_pcm_dma_params *dma_params;
>> int dir;
>>
>> @@ -824,11 +831,12 @@ static int atmel_ssc_trigger(struct snd_pcm_substream *substream,
>> static int atmel_ssc_suspend(struct snd_soc_dai *cpu_dai)
>> {
>> struct atmel_ssc_info *ssc_p;
>> + struct platform_device *pdev = to_platform_device(cpu_dai->dev);
>>
>> if (!cpu_dai->active)
>> return 0;
>>
>> - ssc_p = &ssc_info[cpu_dai->id];
>> + ssc_p = &ssc_info[pdev->id];
>>
>> /* Save the status register before disabling transmit and receive */
>> ssc_p->ssc_state.ssc_sr = ssc_readl(ssc_p->ssc->regs, SR);
>> @@ -852,12 +860,13 @@ static int atmel_ssc_suspend(struct snd_soc_dai *cpu_dai)
>> static int atmel_ssc_resume(struct snd_soc_dai *cpu_dai)
>> {
>> struct atmel_ssc_info *ssc_p;
>> + struct platform_device *pdev = to_platform_device(cpu_dai->dev);
>> u32 cr;
>>
>> if (!cpu_dai->active)
>> return 0;
>>
>> - ssc_p = &ssc_info[cpu_dai->id];
>> + ssc_p = &ssc_info[pdev->id];
>>
>> /* restore SSC register settings */
>> ssc_writel(ssc_p->ssc->regs, TFMR, ssc_p->ssc_state.ssc_tfmr);
>>
>
>
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