diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/samsung/idma.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sound/soc/samsung/idma.c b/sound/soc/samsung/idma.c index e45dd90..31fa305 100644 --- a/sound/soc/samsung/idma.c +++ b/sound/soc/samsung/idma.c @@ -25,6 +25,7 @@ #include "dma.h" /*#define ENABLE_REG_LOG*/ +#define ENABLE_TRNCNT_WA #define ST_RUNNING (1<<0) #define ST_OPENED (1<<1) @@ -68,6 +69,9 @@ static struct idma_info { spinlock_t lock; void __iomem *regs; int trigger_stat; +#ifdef ENABLE_TRNCNT_WA + bool trncnt_wa_enabled; +#endif } idma; static void idma_getpos(dma_addr_t *src, struct snd_pcm_substream *substream) @@ -76,6 +80,14 @@ static void idma_getpos(dma_addr_t *src, struct snd_pcm_substream *substream) struct idma_ctrl *prtd = runtime->private_data; *src = prtd->start + (readl(idma.regs + I2STRNCNT) & 0xffffff) * 4; + +#ifdef ENABLE_TRNCNT_WA + if (idma.trncnt_wa_enabled && (idma.trigger_stat == LPAM_DMA_START)) { + *src -= 4; + if (*src < prtd->start) + *src = prtd->end - 4; + } +#endif } static int idma_enqueue(struct snd_pcm_substream *substream) @@ -503,6 +515,12 @@ void idma_init(void *regs) { spin_lock_init(&idma.lock); idma.regs = regs; +#if defined(ENABLE_TRNCNT_WA) && defined(CONFIG_ARCH_EXYNOS4) + idma.trncnt_wa_enabled = (soc_is_exynos4412() || soc_is_exynos4212()) ? + true : false; +#else + idma.trncnt_wa_enabled = false; +#endif } #ifdef CONFIG_SND_SAMSUNG_RP |