[PATCH 2/4] drm/amd/amdgpu: Enabling BT I2S config for muxed pins

[Vijendar Mukunda]

Enabling BT I2S config for muxed pins.

Signed-off-by: Akshu Agrawal <Akshu.Agrawal at amd.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
index 0f17663..031c09e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acp.c
@@ -76,6 +76,8 @@
 #define mmACP_CONTROL				0x5131
 #define mmACP_STATUS				0x5133
 #define mmACP_SOFT_RESET			0x5134
+#define mmACP_BT_UART_PAD_SELECT		0x51D7
+#define ACP_BT_UART_PAD_SELECT_MASK		0x1
 #define ACP_CONTROL__ClkEn_MASK 		0x1
 #define ACP_SOFT_RESET__SoftResetAud_MASK 	0x100
 #define ACP_SOFT_RESET__SoftResetAudDone_MASK	0x1000000
@@ -510,6 +512,11 @@ static int acp_hw_init(void *handle)
 	val = cgs_read_register(adev->acp.cgs_device, mmACP_SOFT_RESET);
 	val &= ~ACP_SOFT_RESET__SoftResetAud_MASK;
 	cgs_write_register(adev->acp.cgs_device, mmACP_SOFT_RESET, val);
+	/*For BT instance change pins from UART to BT */
+	val = cgs_read_register(adev->acp.cgs_device, mmACP_BT_UART_PAD_SELECT);
+	val |= ACP_BT_UART_PAD_SELECT_MASK;
+	cgs_write_register(adev->acp.cgs_device, mmACP_BT_UART_PAD_SELECT, val);
+
 	return 0;
 }
 
-- 
2.7.4