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ASoC: amd: 16bit resolution support for i2s sp instance 

Moved 16bit resolution condition check for stoney platform
to acp_hw_params.Depending upon substream required register
value need to be programmed rather than enabling 16bit resolution
support all time in acp init.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vijendar Mukunda 2018-03-09 21:13:02 +05:30 committed by Mark Brown
parent 7928b2cbe5
commit a37d48e323
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 11 additions and 7 deletions
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16
sound/soc/amd/acp-pcm-dma.c
View File

@ -579,13 +579,6 @@ static int acp_init(void __iomem *acp_mmio, u32 asic_type)
for (bank = 1; bank < 48; bank++)
acp_set_sram_bank_state(acp_mmio, bank, false);
}
/* Stoney supports 16bit resolution */
if (asic_type == CHIP_STONEY) {
val = acp_reg_read(acp_mmio, mmACP_I2S_16BIT_RESOLUTION_EN);
val |= 0x03;
acp_reg_write(val, acp_mmio, mmACP_I2S_16BIT_RESOLUTION_EN);
}
return 0;
}
@ -774,6 +767,7 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
{
int status;
uint64_t size;
u32 val = 0;
struct page *pg;
struct snd_pcm_runtime *runtime;
struct audio_substream_data *rtd;
@ -786,6 +780,14 @@ static int acp_dma_hw_params(struct snd_pcm_substream *substream,
if (WARN_ON(!rtd))
return -EINVAL;
if (adata->asic_type == CHIP_STONEY) {
val = acp_reg_read(adata->acp_mmio, mmACP_I2S_16BIT_RESOLUTION_EN);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
val |= ACP_I2S_SP_16BIT_RESOLUTION_EN;
else
val |= ACP_I2S_MIC_16BIT_RESOLUTION_EN;
acp_reg_write(val, adata->acp_mmio, mmACP_I2S_16BIT_RESOLUTION_EN);
}
size = params_buffer_bytes(params);
status = snd_pcm_lib_malloc_pages(substream, size);
if (status < 0)

2
sound/soc/amd/acp.h
View File

@ -70,6 +70,8 @@
#define CAPTURE_END_DMA_DESCR_CH15 7
#define mmACP_I2S_16BIT_RESOLUTION_EN 0x5209
#define ACP_I2S_MIC_16BIT_RESOLUTION_EN 0x01
#define ACP_I2S_SP_16BIT_RESOLUTION_EN 0x02
enum acp_dma_priority_level {
/* 0x0 Specifies the DMA channel is given normal priority */
ACP_DMA_PRIORITY_LEVEL_NORMAL = 0x0,