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ASoC: amd: acp: add acp i2s master clock generation for rembrandt platform 

Add acp i2s master clock generation logic for rembrandt platform.

Signed-off-by: V Sujith Kumar Reddy <vsujithkumar.reddy@amd.com>
Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@amd.com>
Link: https://lore.kernel.org/r/20230626135515.1252063-3-Syed.SabaKareem@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Syed Saba Kareem 2023-06-26 19:25:06 +05:30 committed by Mark Brown
parent e61b415515
commit 7ad6fb9dd1
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GPG Key ID: 24D68B725D5487D0
3 changed files with 48 additions and 0 deletions
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19
sound/soc/amd/acp/acp-legacy-common.c
View File

@ -13,6 +13,7 @@
*/
#include "amd.h"
#include <linux/pci.h>
#include <linux/export.h>
static int acp_power_on(struct acp_chip_info *chip)
@ -96,4 +97,22 @@ int acp_deinit(void __iomem *base)
}
EXPORT_SYMBOL_NS_GPL(acp_deinit, SND_SOC_ACP_COMMON);
int smn_write(struct pci_dev *dev, u32 smn_addr, u32 data)
{
pci_write_config_dword(dev, 0x60, smn_addr);
pci_write_config_dword(dev, 0x64, data);
return 0;
}
EXPORT_SYMBOL_NS_GPL(smn_write, SND_SOC_ACP_COMMON);
int smn_read(struct pci_dev *dev, u32 smn_addr)
{
u32 data;
pci_write_config_dword(dev, 0x60, smn_addr);
pci_read_config_dword(dev, 0x64, &data);
return data;
}
EXPORT_SYMBOL_NS_GPL(smn_read, SND_SOC_ACP_COMMON);
MODULE_LICENSE("Dual BSD/GPL");

26
sound/soc/amd/acp/acp-rembrandt.c
View File

@ -19,11 +19,17 @@
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <linux/dma-mapping.h>
#include <linux/pci.h>
#include "amd.h"
#define DRV_NAME "acp_asoc_rembrandt"
#define MP1_C2PMSG_69 0x3B10A14
#define MP1_C2PMSG_85 0x3B10A54
#define MP1_C2PMSG_93 0x3B10A74
#define HOST_BRIDGE_ID 0x14B5
static struct acp_resource rsrc = {
.offset = 0,
.no_of_ctrls = 2,
@ -160,6 +166,25 @@ static struct snd_soc_dai_driver acp_rmb_dai[] = {
},
};
static int acp6x_master_clock_generate(struct device *dev)
{
int data = 0;
struct pci_dev *smn_dev;
smn_dev = pci_get_device(PCI_VENDOR_ID_AMD, HOST_BRIDGE_ID, NULL);
if (!smn_dev) {
dev_err(dev, "Failed to get host bridge device\n");
return -ENODEV;
}
smn_write(smn_dev, MP1_C2PMSG_93, 0);
smn_write(smn_dev, MP1_C2PMSG_85, 0xC4);
smn_write(smn_dev, MP1_C2PMSG_69, 0x4);
read_poll_timeout(smn_read, data, data, DELAY_US,
ACP_TIMEOUT, false, smn_dev, MP1_C2PMSG_93);
return 0;
}
static void acp6x_enable_interrupts(struct acp_dev_data *adata)
{
struct acp_resource *rsrc = adata->rsrc;
@ -228,6 +253,7 @@ static int rembrandt_audio_probe(struct platform_device *pdev)
acp_machine_select(adata);
dev_set_drvdata(dev, adata);
acp6x_master_clock_generate(dev);
acp6x_enable_interrupts(adata);
acp_platform_register(dev);

3
sound/soc/amd/acp/amd.h
View File

@ -187,6 +187,9 @@ int acp_platform_unregister(struct device *dev);
int acp_machine_select(struct acp_dev_data *adata);
int smn_read(struct pci_dev *dev, u32 smn_addr);
int smn_write(struct pci_dev *dev, u32 smn_addr, u32 data);
int acp_init(struct acp_chip_info *chip);
int acp_deinit(void __iomem *base);
/* Machine configuration */