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| author | Stas Sergeev <stsp@aknet.ru> | 2008-05-17 08:44:41 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2008-05-19 12:06:25 +0200 |
| commit | 4dfd79546dfed83bf756f5c912f686ebac187c16 (patch) | |
| tree | aa8654734026eb300bc9d8d30f774fe4a642492d /sound | |
| parent | 3ccee69019d3b23f02204f4c2cb3085f436da252 (diff) | |
| download | lwn-4dfd79546dfed83bf756f5c912f686ebac187c16.tar.gz lwn-4dfd79546dfed83bf756f5c912f686ebac187c16.zip | |
snd-pcsp: put back the compatibility code for the older alsa-libs
The attached patch adds back the compatibility code, allowing the
driver to work with older alsa-libs.
The removal was premature, it breaks the real-life configs.
Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/drivers/pcsp/pcsp_lib.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/sound/drivers/pcsp/pcsp_lib.c b/sound/drivers/pcsp/pcsp_lib.c index ac6238e93513..54253e9b4b02 100644 --- a/sound/drivers/pcsp/pcsp_lib.c +++ b/sound/drivers/pcsp/pcsp_lib.c @@ -18,6 +18,8 @@ module_param(nforce_wa, bool, 0444); MODULE_PARM_DESC(nforce_wa, "Apply NForce chipset workaround " "(expect bad sound)"); +#define DMIX_WANTS_S16 1 + static void pcsp_start_timer(unsigned long dummy) { hrtimer_start(&pcsp_chip.timer, ktime_set(0, 0), HRTIMER_MODE_REL); @@ -47,7 +49,7 @@ enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle) { unsigned long flags; unsigned char timer_cnt, val; - int periods_elapsed; + int fmt_size, periods_elapsed; u64 ns; size_t period_bytes, buffer_bytes; struct snd_pcm_substream *substream; @@ -92,8 +94,11 @@ enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle) goto exit_nr_unlock2; runtime = substream->runtime; - /* assume it is u8 mono */ - val = runtime->dma_area[chip->playback_ptr]; + fmt_size = snd_pcm_format_physical_width(runtime->format) >> 3; + /* assume it is mono! */ + val = runtime->dma_area[chip->playback_ptr + fmt_size - 1]; + if (snd_pcm_format_signed(runtime->format)) + val ^= 0x80; timer_cnt = val * CUR_DIV() / 256; if (timer_cnt && chip->enable) { @@ -111,7 +116,7 @@ enum hrtimer_restart pcsp_do_timer(struct hrtimer *handle) period_bytes = snd_pcm_lib_period_bytes(substream); buffer_bytes = snd_pcm_lib_buffer_bytes(substream); - chip->playback_ptr += PCSP_INDEX_INC(); + chip->playback_ptr += PCSP_INDEX_INC() * fmt_size; periods_elapsed = chip->playback_ptr - chip->period_ptr; if (periods_elapsed < 0) { printk(KERN_WARNING "PCSP: playback_ptr inconsistent " @@ -270,7 +275,11 @@ static struct snd_pcm_hardware snd_pcsp_playback = { .info = (SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_HALF_DUPLEX | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID), - .formats = SNDRV_PCM_FMTBIT_U8, + .formats = (SNDRV_PCM_FMTBIT_U8 +#if DMIX_WANTS_S16 + | SNDRV_PCM_FMTBIT_S16_LE +#endif + ), .rates = SNDRV_PCM_RATE_KNOT, .rate_min = PCSP_DEFAULT_SRATE, .rate_max = PCSP_DEFAULT_SRATE, |