Unverified Commit fb2eaec6 authored by Venkata Prasad Potturu's avatar Venkata Prasad Potturu Committed by Mark Brown
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ASoC: amd: acp: Add I2S master clock generation support for acp7.0 platform 



Add I2S master clock generation support for acp7.0 platforms.

Signed-off-by: default avatarVenkata Prasad Potturu <venkataprasad.potturu@amd.com>
Link: https://patch.msgid.link/20240903113427.182997-7-venkataprasad.potturu@amd.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 7a040cc5

sound/soc/amd/acp/acp70.c

+24 −0
Original line number Diff line number Diff line
@@ -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);