Liam
I am trying to implement shutdown in ASoC
/* dapm stream operations */
#define SND_SOC_DAPM_STREAM_NOP 0x0
#define SND_SOC_DAPM_STREAM_START 0x1
#define SND_SOC_DAPM_STREAM_STOP 0x2
#define SND_SOC_DAPM_STREAM_SUSPEND 0x4
#define SND_SOC_DAPM_STREAM_RESUME 0x8
#define SND_SOC_DAPM_STREAM_PAUSE_PUSH 0x10
#define SND_SOC_DAPM_STREAM_PAUSE_RELEASE 0x20
Is there any need to add stream operation called
SND_SOC_DAPM_STREAM_SHUTDOWN even though this has no effect no the
system behaviour.
Instead we can use SND_SOC_DAPM_STREAM_SUSPEND.
Is this OK.
is there any better way to implement suspend?, i think suspend will be
a copy of remove() function.
On 6/12/07, Nobin Mathew <nobin.mathew@xxxxxxxxx> wrote:
> Liam,
>
> Shutdown() vectors is missing in ASoC, we need this to ensure proper
> shutdown of the system.
>
> * codec device */
> struct snd_soc_codec_device {
> int (*probe)(struct platform_device *pdev);
> int (*remove)(struct platform_device *pdev);
> int (*suspend)(struct platform_device *pdev, pm_message_t state);
> int (*resume)(struct platform_device *pdev);
> };
>
> /* SoC CPU DAI */
> struct snd_soc_cpu_dai {
>
> /* DAI description */
> char *name;
> unsigned int id;
> unsigned char type;
>
> /* DAI callbacks */
> int (*probe)(struct platform_device *pdev);
> void (*remove)(struct platform_device *pdev);
> int (*suspend)(struct platform_device *pdev,
> struct snd_soc_cpu_dai *cpu_dai);
> int (*resume)(struct platform_device *pdev,
> struct snd_soc_cpu_dai *cpu_dai);
> unsigned int (*config_sysclk)(struct snd_soc_cpu_dai *cpu_dai,
> struct snd_soc_clock_info *info, unsigned int clk);
>
> /* DAI capabilities */
> struct snd_soc_pcm_stream capture;
> struct snd_soc_pcm_stream playback;
> struct snd_soc_dai_cap caps;
>
>
> /* SoC platform interface */
> struct snd_soc_platform {
> char *name;
>
> int (*probe)(struct platform_device *pdev);
> int (*remove)(struct platform_device *pdev);
> int (*suspend)(struct platform_device *pdev,
> struct snd_soc_cpu_dai *cpu_dai);
> int (*resume)(struct platform_device *pdev,
> struct snd_soc_cpu_dai *cpu_dai);
>
> /* pcm creation and destruction */
>
>
>
> /* SoC machine */
> struct snd_soc_machine {
> char *name;
>
> int (*probe)(struct platform_device *pdev);
> int (*remove)(struct platform_device *pdev);
>
> /* the pre and post PM functions are used to do any PM work before and
> * after the codec and DAI's do any PM work. */
> int (*suspend_pre)(struct platform_device *pdev, pm_message_t state);
> int (*suspend_post)(struct platform_device *pdev, pm_message_t state);
> int (*resume_pre)(struct platform_device *pdev);
> int (*resume_post)(struct platform_device *pdev);
>
>
>
> Nobin Mathew
>
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