On ST/CZ based platforms, for specific platform bt uart mux to be defined for bt i2s. By default, these pins will be used for uart. After acp reset , it requires to reprogram bt i2s config mux pins to enable bt i2s instance. added bt i2s enablement sequence during acp init.

Signed-off-by: Vijendar Mukunda Vijendar.Mukunda@amd.com Signed-off-by: Akshu Agrawal akshu.agrawal@amd.com --- v1->v2: fixed kbuild errors sound/soc/amd/acp-da7219-max98357a.c | 2 ++ sound/soc/amd/acp-pcm-dma.c | 9 +++++++++ sound/soc/amd/acp.h | 1 + 3 files changed, 12 insertions(+)

diff --git a/sound/soc/amd/acp-da7219-max98357a.c b/sound/soc/amd/acp-da7219-max98357a.c index b205c78..9ff2138 100644 --- a/sound/soc/amd/acp-da7219-max98357a.c +++ b/sound/soc/amd/acp-da7219-max98357a.c @@ -44,6 +44,7 @@

static struct snd_soc_jack cz_jack; struct clk *da7219_dai_clk; +extern int bt_pad_enable;

static int cz_da7219_init(struct snd_soc_pcm_runtime *rtd) { @@ -251,6 +252,7 @@ static int cz_probe(struct platform_device *pdev) cz_card.name, ret); return ret; } + bt_pad_enable = device_property_read_bool(&pdev->dev, "bt-pad-enable"); return 0; }

diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c index 7c392fe..b52c660 100644 --- a/sound/soc/amd/acp-pcm-dma.c +++ b/sound/soc/amd/acp-pcm-dma.c @@ -46,6 +46,8 @@

#define DRV_NAME "acp_audio_dma"

+bool bt_pad_enable = false; +EXPORT_SYMBOL(bt_pad_enable);

static const struct snd_pcm_hardware acp_pcm_hardware_playback = { .info = SNDRV_PCM_INFO_INTERLEAVED | @@ -525,6 +527,13 @@ static int acp_init(void __iomem *acp_mmio, u32 asic_type) val &= ~ACP_SOFT_RESET__SoftResetAud_MASK; acp_reg_write(val, acp_mmio, mmACP_SOFT_RESET);

+ /* For BT instance change pins from UART to BT */ + if (bt_pad_enable) { + val = acp_reg_read(acp_mmio, mmACP_BT_UART_PAD_SEL); + val |= ACP_BT_UART_PAD_SELECT_MASK; + acp_reg_write(val, acp_mmio, mmACP_BT_UART_PAD_SEL); + } + /* initiailize Onion control DAGB register */ acp_reg_write(ACP_ONION_CNTL_DEFAULT, acp_mmio, mmACP_AXI2DAGB_ONION_CNTL); diff --git a/sound/soc/amd/acp.h b/sound/soc/amd/acp.h index 95c39a3..520a08f 100644 --- a/sound/soc/amd/acp.h +++ b/sound/soc/amd/acp.h @@ -110,6 +110,7 @@ #define ACP_I2S_MIC_16BIT_RESOLUTION_EN 0x01 #define ACP_I2S_SP_16BIT_RESOLUTION_EN 0x02 #define ACP_I2S_BT_16BIT_RESOLUTION_EN 0x04 +#define ACP_BT_UART_PAD_SELECT_MASK 0x1

enum acp_dma_priority_level { /* 0x0 Specifies the DMA channel is given normal priority */