[ALSA] PCM resume cleanups

Digigram VX core,CS4231 driver,ATIIXP driver,VIA82xx driver
VIA82xx-modem driver,au88x0 driver,CS46xx driver,Trident driver
This patch disables SNDRV_PCM_INFO_RESUME flag for drivers which does not
support the full resume.

Signed-off-by: Jaroslav Kysela <perex@suse.cz>

1 files changed, 9 insertions, 1 deletions

diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c
index cafab4af5c57..904d17394e1c 100644
--- a/sound/pci/atiixp.c
+++ b/sound/pci/atiixp.c
@@ -248,6 +248,7 @@ struct snd_atiixp_dma {
         unsigned int period_bytes, periods;
         int opened;
         int running;
+        int suspended;
         int pcm_open_flag;
         int ac97_pcm_type;      /* index # of ac97_pcm to access, -1 = not used */
         unsigned int saved_curptr;
@@ -699,12 +700,18 @@ static int snd_atiixp_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
         spin_lock(&chip->reg_lock);
         switch (cmd) {
         case SNDRV_PCM_TRIGGER_START:
+        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+        case SNDRV_PCM_TRIGGER_RESUME:
                 dma->ops->enable_transfer(chip, 1);
                 dma->running = 1;
+                dma->suspended = 0;
                 break;
         case SNDRV_PCM_TRIGGER_STOP:
+        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+        case SNDRV_PCM_TRIGGER_SUSPEND:
                 dma->ops->enable_transfer(chip, 0);
                 dma->running = 0;
+                dma->suspended = cmd == SNDRV_PCM_TRIGGER_SUSPEND;
                 break;
         default:
                 err = -EINVAL;
@@ -975,6 +982,7 @@ static snd_pcm_hardware_t snd_atiixp_pcm_hw =
 {
         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
+                                 SNDRV_PCM_INFO_PAUSE |
                                  SNDRV_PCM_INFO_RESUME |
                                  SNDRV_PCM_INFO_MMAP_VALID),
         .formats =              SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
@@ -1443,7 +1451,7 @@ static int snd_atiixp_resume(snd_card_t *card)
         for (i = 0; i < NUM_ATI_PCMDEVS; i++)
                 if (chip->pcmdevs[i]) {
                         atiixp_dma_t *dma = &chip->dmas[i];
-                        if (dma->substream && dma->running) {
+                        if (dma->substream && dma->suspended) {
                                 dma->ops->enable_dma(chip, 1);
                                 writel((u32)dma->desc_buf.addr | ATI_REG_LINKPTR_EN,
                                        chip->remap_addr + dma->ops->llp_offset);