Add I2S master clock generation support for acp7.0 platforms.
Signed-off-by: Venkata Prasad Potturu <venkataprasad.potturu@xxxxxxx>
---
sound/soc/amd/acp/acp70.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/sound/soc/amd/acp/acp70.c b/sound/soc/amd/acp/acp70.c
index 81636faa22cd..a9be059889b7 100644
--- a/sound/soc/amd/acp/acp70.c
+++ b/sound/soc/amd/acp/acp70.c
@@ -25,6 +25,9 @@
#define DRV_NAME "acp_asoc_acp70"
+#define CLK7_CLK0_DFS_CNTL_N1 0X0006C1A4
+#define CLK0_DIVIDER 0X19
+
static struct acp_resource rsrc = {
.offset = 0,
.no_of_ctrls = 2,
@@ -134,12 +137,27 @@ static struct snd_soc_dai_driver acp70_dai[] = {
},
};
+static int acp70_i2s_master_clock_generate(struct acp_dev_data *adata)
+{
+ struct pci_dev *smn_dev;
+
+ smn_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x1507, NULL);
+ if (!smn_dev)
+ return -ENODEV;
+
+ /* Set clk7 DFS clock divider register value to get mclk as 196.608MHz*/
+ smn_write(smn_dev, CLK7_CLK0_DFS_CNTL_N1, CLK0_DIVIDER);
+
+ return 0;
+}
+
static int acp_acp70_audio_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct acp_chip_info *chip;
struct acp_dev_data *adata;
struct resource *res;
+ int ret;
chip = dev_get_platdata(&pdev->dev);
if (!chip || !chip->base) {
@@ -191,6 +209,12 @@ static int acp_acp70_audio_probe(struct platform_device *pdev)
acp_machine_select(adata);
dev_set_drvdata(dev, adata);
+
+ ret = acp70_i2s_master_clock_generate(adata);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to set I2S master clock as 196.608MHz\n");
+ return ret;
+ }
acp_enable_interrupts(adata);
acp_platform_register(dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);
--
2.39.2
