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https://github.com/torvalds/linux.git
synced 2024-11-22 12:11:40 +00:00
[ALSA] harmony - Code clean up
Modules: PARISC Harmony driver Clean up snd-harmony driver code: - Give standard module options - Fix spinlocks - Fix the error path of request_irq() - Clean up redundant codes Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
Jaroslav Kysela
parent
33ea25c113
commit
03f9ae2505
@ -59,6 +59,14 @@
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#include "harmony.h"
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static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */
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static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */
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module_param(index, int, 0444);
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MODULE_PARM_DESC(index, "Index value for Harmony driver.");
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module_param(id, charp, 0444);
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MODULE_PARM_DESC(id, "ID string for Harmony driver.");
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static struct parisc_device_id snd_harmony_devtable[] = {
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/* bushmaster / flounder */
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{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0007A },
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@ -299,12 +307,11 @@ static int
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snd_harmony_playback_trigger(snd_pcm_substream_t *ss, int cmd)
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{
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harmony_t *h = snd_pcm_substream_chip(ss);
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unsigned long flags;
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if (h->st.capturing)
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return -EBUSY;
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spin_lock_irqsave(&h->lock, flags);
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spin_lock(&h->lock);
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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h->st.playing = 1;
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@ -323,11 +330,11 @@ snd_harmony_playback_trigger(snd_pcm_substream_t *ss, int cmd)
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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default:
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spin_unlock_irqrestore(&h->lock, flags);
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spin_unlock(&h->lock);
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snd_BUG();
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return -EINVAL;
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}
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spin_unlock_irqrestore(&h->lock, flags);
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spin_unlock(&h->lock);
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return 0;
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}
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@ -336,12 +343,11 @@ static int
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snd_harmony_capture_trigger(snd_pcm_substream_t *ss, int cmd)
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{
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harmony_t *h = snd_pcm_substream_chip(ss);
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unsigned long flags;
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if (h->st.playing)
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return -EBUSY;
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spin_lock_irqsave(&h->lock, flags);
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spin_lock(&h->lock);
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switch (cmd) {
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case SNDRV_PCM_TRIGGER_START:
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h->st.capturing = 1;
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@ -360,11 +366,11 @@ snd_harmony_capture_trigger(snd_pcm_substream_t *ss, int cmd)
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case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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case SNDRV_PCM_TRIGGER_SUSPEND:
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default:
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spin_unlock_irqrestore(&h->lock, flags);
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spin_unlock(&h->lock);
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snd_BUG();
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return -EINVAL;
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}
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spin_unlock_irqrestore(&h->lock, flags);
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spin_unlock(&h->lock);
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return 0;
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}
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@ -710,9 +716,8 @@ snd_harmony_volume_get(snd_kcontrol_t *kc,
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int mask = (kc->private_value >> 16) & 0xff;
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int invert = (kc->private_value >> 24) & 0xff;
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int left, right;
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unsigned long flags;
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spin_lock_irqsave(&h->mixer_lock, flags);
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spin_lock_irq(&h->mixer_lock);
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left = (h->st.gain >> shift_left) & mask;
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right = (h->st.gain >> shift_right) & mask;
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@ -725,7 +730,7 @@ snd_harmony_volume_get(snd_kcontrol_t *kc,
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if (shift_left != shift_right)
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ucontrol->value.integer.value[1] = right;
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spin_unlock_irqrestore(&h->mixer_lock, flags);
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spin_unlock_irq(&h->mixer_lock);
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return 0;
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}
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@ -741,9 +746,8 @@ snd_harmony_volume_put(snd_kcontrol_t *kc,
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int invert = (kc->private_value >> 24) & 0xff;
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int left, right;
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int old_gain = h->st.gain;
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unsigned long flags;
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spin_lock_irqsave(&h->mixer_lock, flags);
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spin_lock_irq(&h->mixer_lock);
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left = ucontrol->value.integer.value[0] & mask;
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if (invert)
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@ -761,7 +765,7 @@ snd_harmony_volume_put(snd_kcontrol_t *kc,
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snd_harmony_set_new_gain(h);
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spin_unlock_irqrestore(&h->mixer_lock, flags);
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spin_unlock_irq(&h->mixer_lock);
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return h->st.gain != old_gain;
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}
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@ -787,14 +791,13 @@ snd_harmony_captureroute_get(snd_kcontrol_t *kc,
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{
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harmony_t *h = snd_kcontrol_chip(kc);
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int value;
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unsigned long flags;
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spin_lock_irqsave(&h->mixer_lock, flags);
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spin_lock_irq(&h->mixer_lock);
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value = (h->st.gain >> HARMONY_GAIN_IS_SHIFT) & 1;
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ucontrol->value.enumerated.item[0] = value;
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spin_unlock_irqrestore(&h->mixer_lock, flags);
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spin_unlock_irq(&h->mixer_lock);
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return 0;
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}
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@ -806,9 +809,8 @@ snd_harmony_captureroute_put(snd_kcontrol_t *kc,
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harmony_t *h = snd_kcontrol_chip(kc);
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int value;
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int old_gain = h->st.gain;
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unsigned long flags;
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spin_lock_irqsave(&h->mixer_lock, flags);
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spin_lock_irq(&h->mixer_lock);
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value = ucontrol->value.enumerated.item[0] & 1;
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h->st.gain &= ~HARMONY_GAIN_IS_MASK;
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@ -816,7 +818,7 @@ snd_harmony_captureroute_put(snd_kcontrol_t *kc,
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snd_harmony_set_new_gain(h);
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spin_unlock_irqrestore(&h->mixer_lock, flags);
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spin_unlock_irq(&h->mixer_lock);
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return h->st.gain != old_gain;
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}
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@ -923,19 +925,14 @@ snd_harmony_create(snd_card_t *card,
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*rchip = NULL;
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h = kmalloc(sizeof(*h), GFP_KERNEL);
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h = kzalloc(sizeof(*h), GFP_KERNEL);
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if (h == NULL)
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return -ENOMEM;
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memset(&h->st, 0, sizeof(h->st));
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memset(&h->stats, 0, sizeof(h->stats));
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memset(&h->pbuf, 0, sizeof(h->pbuf));
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memset(&h->cbuf, 0, sizeof(h->cbuf));
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h->hpa = padev->hpa.start;
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h->card = card;
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h->dev = padev;
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h->irq = padev->irq;
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h->irq = -1;
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h->iobase = ioremap_nocache(padev->hpa.start, HARMONY_SIZE);
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if (h->iobase == NULL) {
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printk(KERN_ERR PFX "unable to remap hpa 0x%lx\n",
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@ -944,13 +941,14 @@ snd_harmony_create(snd_card_t *card,
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goto free_and_ret;
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}
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err = request_irq(h->irq, snd_harmony_interrupt, 0,
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err = request_irq(padev->irq, snd_harmony_interrupt, 0,
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"harmony", h);
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if (err) {
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printk(KERN_ERR PFX "could not obtain interrupt %d",
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h->irq);
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padev->irq);
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goto free_and_ret;
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}
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h->irq = padev->irq;
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spin_lock_init(&h->mixer_lock);
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spin_lock_init(&h->lock);
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@ -975,35 +973,24 @@ static int __devinit
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snd_harmony_probe(struct parisc_device *padev)
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{
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int err;
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static int dev;
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snd_card_t *card;
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harmony_t *h;
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static int index = SNDRV_DEFAULT_IDX1;
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static char *id = SNDRV_DEFAULT_STR1;
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h = parisc_get_drvdata(padev);
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if (h != NULL) {
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return -ENODEV;
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}
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card = snd_card_new(index, id, THIS_MODULE, 0);
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if (card == NULL)
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return -ENOMEM;
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err = snd_harmony_create(card, padev, &h);
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if (err < 0) {
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if (err < 0)
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goto free_and_ret;
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}
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err = snd_harmony_pcm_init(h);
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if (err < 0) {
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if (err < 0)
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goto free_and_ret;
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}
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err = snd_harmony_mixer_init(h);
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if (err < 0) {
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if (err < 0)
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goto free_and_ret;
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}
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strcpy(card->driver, "harmony");
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strcpy(card->shortname, "Harmony");
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@ -1011,13 +998,10 @@ snd_harmony_probe(struct parisc_device *padev)
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card->shortname, h->hpa, h->irq);
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err = snd_card_register(card);
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if (err < 0) {
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if (err < 0)
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goto free_and_ret;
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}
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dev++;
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parisc_set_drvdata(padev, h);
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parisc_set_drvdata(padev, card);
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return 0;
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free_and_ret:
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@ -1028,8 +1012,8 @@ free_and_ret:
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static int __devexit
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snd_harmony_remove(struct parisc_device *padev)
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{
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harmony_t *h = parisc_get_drvdata(padev);
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snd_card_free(h->card);
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snd_card_free(parisc_get_drvdata(padev));
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parisc_set_drvdata(padev, NULL);
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return 0;
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}
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@ -1043,28 +1027,13 @@ static struct parisc_driver snd_harmony_driver = {
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static int __init
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alsa_harmony_init(void)
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{
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int err;
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err = register_parisc_driver(&snd_harmony_driver);
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if (err < 0) {
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printk(KERN_ERR PFX "device not found\n");
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return err;
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}
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return 0;
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return register_parisc_driver(&snd_harmony_driver);
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}
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static void __exit
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alsa_harmony_fini(void)
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{
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int err;
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err = unregister_parisc_driver(&snd_harmony_driver);
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if (err < 0) {
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printk(KERN_ERR PFX "failed to unregister\n");
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}
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return;
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return unregister_parisc_driver(&snd_harmony_driver);
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}
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MODULE_LICENSE("GPL");
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