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ASoC: amd: add acp6.2 init/de-init functions

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Add Pink Sardine platform ACP6.2 PCI driver init/deinit functions.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@amd.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20220827165657.2343818-4-Syed.SabaKareem@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Syed Saba Kareem 2022-08-27 22:26:47 +05:30 committed by Mark Brown
parent 95e43a170b
commit 9766bb62cf
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 118 additions and 0 deletions
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12
sound/soc/amd/ps/acp62.h
View File

@ -9,6 +9,18 @@
#define ACP_DEVICE_ID 0x15E2
#define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK 0x00010001
#define ACP_PGFSM_CNTL_POWER_ON_MASK 1
#define ACP_PGFSM_CNTL_POWER_OFF_MASK 0
#define ACP_PGFSM_STATUS_MASK 3
#define ACP_POWERED_ON 0
#define ACP_POWER_ON_IN_PROGRESS 1
#define ACP_POWERED_OFF 2
#define ACP_POWER_OFF_IN_PROGRESS 3
#define ACP_ERROR_MASK 0x20000000
#define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
static inline u32 acp62_readl(void __iomem *base_addr)
{
return readl(base_addr);

106
sound/soc/amd/ps/pci-ps.c
View File

@ -8,6 +8,7 @@
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/delay.h>
#include "acp62.h"
@ -15,6 +16,100 @@ struct acp62_dev_data {
void __iomem *acp62_base;
};
static int acp62_power_on(void __iomem *acp_base)
{
u32 val;
int timeout;
val = acp62_readl(acp_base + ACP_PGFSM_STATUS);
if (!val)
return val;
if ((val & ACP_PGFSM_STATUS_MASK) != ACP_POWER_ON_IN_PROGRESS)
acp62_writel(ACP_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL);
timeout = 0;
while (++timeout < 500) {
val = acp62_readl(acp_base + ACP_PGFSM_STATUS);
if (!val)
return 0;
udelay(1);
}
return -ETIMEDOUT;
}
static int acp62_reset(void __iomem *acp_base)
{
u32 val;
int timeout;
acp62_writel(1, acp_base + ACP_SOFT_RESET);
timeout = 0;
while (++timeout < 500) {
val = acp62_readl(acp_base + ACP_SOFT_RESET);
if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)
break;
cpu_relax();
}
acp62_writel(0, acp_base + ACP_SOFT_RESET);
timeout = 0;
while (++timeout < 500) {
val = acp62_readl(acp_base + ACP_SOFT_RESET);
if (!val)
return 0;
cpu_relax();
}
return -ETIMEDOUT;
}
static void acp62_enable_interrupts(void __iomem *acp_base)
{
acp62_writel(1, acp_base + ACP_EXTERNAL_INTR_ENB);
}
static void acp62_disable_interrupts(void __iomem *acp_base)
{
acp62_writel(ACP_EXT_INTR_STAT_CLEAR_MASK, acp_base +
ACP_EXTERNAL_INTR_STAT);
acp62_writel(0, acp_base + ACP_EXTERNAL_INTR_CNTL);
acp62_writel(0, acp_base + ACP_EXTERNAL_INTR_ENB);
}
static int acp62_init(void __iomem *acp_base, struct device *dev)
{
int ret;
ret = acp62_power_on(acp_base);
if (ret) {
dev_err(dev, "ACP power on failed\n");
return ret;
}
acp62_writel(0x01, acp_base + ACP_CONTROL);
ret = acp62_reset(acp_base);
if (ret) {
dev_err(dev, "ACP reset failed\n");
return ret;
}
acp62_writel(0x03, acp_base + ACP_CLKMUX_SEL);
acp62_enable_interrupts(acp_base);
return 0;
}
static int acp62_deinit(void __iomem *acp_base, struct device *dev)
{
int ret;
acp62_disable_interrupts(acp_base);
ret = acp62_reset(acp_base);
if (ret) {
dev_err(dev, "ACP reset failed\n");
return ret;
}
acp62_writel(0, acp_base + ACP_CLKMUX_SEL);
acp62_writel(0, acp_base + ACP_CONTROL);
return 0;
}
static int snd_acp62_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
@ -56,6 +151,10 @@ static int snd_acp62_probe(struct pci_dev *pci,
}
pci_set_master(pci);
pci_set_drvdata(pci, adata);
ret = acp62_init(adata->acp62_base, &pci->dev);
if (ret)
goto release_regions;
return 0;
release_regions:
pci_release_regions(pci);
@ -67,6 +166,13 @@ disable_pci:
static void snd_acp62_remove(struct pci_dev *pci)
{
struct acp62_dev_data *adata;
int ret;
adata = pci_get_drvdata(pci);
ret = acp62_deinit(adata->acp62_base, &pci->dev);
if (ret)
dev_err(&pci->dev, "ACP de-init failed\n");
pci_release_regions(pci);
pci_disable_device(pci);
}