ALSA: AACI: add double-rate support

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 15 insertions, 2 deletions

diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c
index b88bbded2f4f..b377370af2d7 100644
--- a/sound/arm/aaci.c
+++ b/sound/arm/aaci.c
@@ -366,6 +366,10 @@ static int __aaci_pcm_open(struct aaci *aaci,
         runtime->hw.rates = aacirun->pcm->rates;
         snd_pcm_limit_hw_rates(runtime);
 
+        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
+            aacirun->pcm->r[1].slots)
+                snd_ac97_pcm_double_rate_rules(runtime);
+
         /*
          * FIXME: ALSA specifies fifo_size in bytes.  If we're in normal
          * mode, each 32-bit word contains one sample.  If we're in
@@ -439,9 +443,12 @@ static int aaci_pcm_hw_params(struct snd_pcm_substream *substream,
         err = snd_pcm_lib_malloc_pages(substream,
                                        params_buffer_bytes(params));
         if (err >= 0) {
-                err = snd_ac97_pcm_open(aacirun->pcm, params_rate(params),
+                unsigned int rate = params_rate(params);
+                int dbl = rate > 48000;
+
+                err = snd_ac97_pcm_open(aacirun->pcm, rate,
                                         params_channels(params),
-                                        aacirun->pcm->r[0].slots);
+                                        aacirun->pcm->r[dbl].slots);
 
                 aacirun->pcm_open = err == 0;
                 aacirun->cr = CR_FEN | CR_COMPACT | CR_SZ16;
@@ -808,6 +815,12 @@ static struct ac97_pcm ac97_defs[] __devinitdata = {
                                           (1 << AC97_SLOT_PCM_SRIGHT) |
                                           (1 << AC97_SLOT_LFE),
                         },
+                        [1] = {
+                                .slots  = (1 << AC97_SLOT_PCM_LEFT) |
+                                          (1 << AC97_SLOT_PCM_RIGHT) |
+                                          (1 << AC97_SLOT_PCM_LEFT_0) |
+                                          (1 << AC97_SLOT_PCM_RIGHT_0),
+                        },
                 },
         },
         [1] = { /* PCM in */