linux-2.6.33/show_pcm_class() の履歴(No.1)

• 履歴一覧
• 差分 を表示
• 現在との差分 を表示
• ソース を表示
• linux-2.6.33/show_pcm_class() へ行く。
  • 1 (2013-08-01 (木) 11:36:31)

参照元†

• linux-2.6.33/pcm_attrs(global)

説明†

• パス: linux-2.6.33/sound/core/pcm.c

• FIXME: これは何？
  • 説明

引数†

• struct device *dev
  • linux-2.6.33/device
• struct device_attribute *attr
  • linux-2.6.33/device_attribute
• char *buf

返り値†

• ssize_t

参考†

実装†

static ssize_t show_pcm_class(struct device *dev,
			      struct device_attribute *attr, char *buf)
{
	struct snd_pcm *pcm;
	const char *str;
	static const char *strs[SNDRV_PCM_CLASS_LAST + 1] = {
		[SNDRV_PCM_CLASS_GENERIC] = "generic",
		[SNDRV_PCM_CLASS_MULTI] = "multi",
		[SNDRV_PCM_CLASS_MODEM] = "modem",
		[SNDRV_PCM_CLASS_DIGITIZER] = "digitizer",
	};

• • linux-2.6.33/snd_pcm

• linux-2.6.33/SNDRV_PCM_CLASS_GENERIC

• • linux-2.6.33/SNDRV_PCM_CLASS_MULTI

• linux-2.6.33/SNDRV_PCM_CLASS_MODEM

• • linux-2.6.33/SNDRV_PCM_CLASS_DIGITIZER

	if (! (pcm = dev_get_drvdata(dev)) ||
	    pcm->dev_class > SNDRV_PCM_CLASS_LAST)
		str = "none";
	else
		str = strs[pcm->dev_class];

• • linux-2.6.33/dev_get_drvdata()

        return snprintf(buf, PAGE_SIZE, "%s\n", str);
}

コメント†