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Commit f5d6def5 authored by Wu Fengguang's avatar Wu Fengguang Committed by Takashi Iwai
Browse files

ALSA: hda - vectorize get_empty_pcm_device() 



This unifies the code and data structure,
and makes it easy to add more HDMI devices.

Signed-off-by: default avatarWu Fengguang <fengguang.wu@intel.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 739b47f1

sound/pci/hda/hda_codec.c

+16 −33
Original line number Diff line number Diff line
@@ -2885,43 +2885,26 @@ static int get_empty_pcm_device(struct hda_bus *bus, int type) 
	static const char *dev_name[HDA_PCM_NTYPES] = {

		"Audio", "SPDIF", "HDMI", "Modem"

	};

	/* starting device index for each PCM type */

	static int dev_idx[HDA_PCM_NTYPES] = {

		[HDA_PCM_TYPE_AUDIO] = 0,

		[HDA_PCM_TYPE_SPDIF] = 1,

		[HDA_PCM_TYPE_HDMI] = 3,

		[HDA_PCM_TYPE_MODEM] = 6

	/* audio device indices; not linear to keep compatibility */

	static int audio_idx[HDA_PCM_NTYPES][5] = {

		[HDA_PCM_TYPE_AUDIO] = { 0, 2, 4, 5, -1 },

		[HDA_PCM_TYPE_SPDIF] = { 1, -1 },

		[HDA_PCM_TYPE_HDMI]  = { 3, -1 },

		[HDA_PCM_TYPE_MODEM] = { 6, -1 },

	};

	/* normal audio device indices; not linear to keep compatibility */

	static int audio_idx[4] = { 0, 2, 4, 5 };

	int i, dev;



	switch (type) {

	case HDA_PCM_TYPE_AUDIO:

		for (i = 0; i < ARRAY_SIZE(audio_idx); i++) {

			dev = audio_idx[i];

			if (!test_bit(dev, bus->pcm_dev_bits))

				goto ok;

		}

		snd_printk(KERN_WARNING "Too many audio devices\n");

		return -EAGAIN;

	case HDA_PCM_TYPE_SPDIF:

	case HDA_PCM_TYPE_HDMI:

	case HDA_PCM_TYPE_MODEM:

		dev = dev_idx[type];

		if (test_bit(dev, bus->pcm_dev_bits)) {

			snd_printk(KERN_WARNING "%s already defined\n",

				   dev_name[type]);

			return -EAGAIN;

		}

		break;

	default:

	int i;



	if (type >= HDA_PCM_NTYPES) {

		snd_printk(KERN_WARNING "Invalid PCM type %d\n", type);

		return -EINVAL;

	}

 ok:

	set_bit(dev, bus->pcm_dev_bits);

	return dev;



	for (i = 0; audio_idx[type][i] >= 0 ; i++)

		if (!test_and_set_bit(audio_idx[type][i], bus->pcm_dev_bits))

			return audio_idx[type][i];



	snd_printk(KERN_WARNING "Too many %s devices\n", dev_name[type]);

	return -EAGAIN;

}



/*