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ASoC: amd: acp: Add ACP init()/deinit() callback for Renoir.

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ACP hardware has PGFSM control registers that can be configured to
power On/Off the ACP IP block. Add acp init()/de_init() callbacks
in renoir platform driver probe()/remove() respectively to power
on and off ACP IP block on ACP3X device.

Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Link: https://lore.kernel.org/r/20220117115854.455995-5-AjitKumar.Pandey@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Ajit Kumar Pandey 2022-01-17 17:28:52 +05:30 committed by Mark Brown
parent 5a9f07a415
commit 6a75585a3d
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GPG Key ID: 24D68B725D5487D0
2 changed files with 153 additions and 0 deletions
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147
sound/soc/amd/acp/acp-renoir.c
View File

@ -25,6 +25,20 @@
#define DRV_NAME "acp_asoc_renoir"
#define ACP_SOFT_RST_DONE_MASK 0x00010001
#define ACP_PWR_ON_MASK 0x01
#define ACP_PWR_OFF_MASK 0x00
#define ACP_PGFSM_STAT_MASK 0x03
#define ACP_POWERED_ON 0x00
#define ACP_PWR_ON_IN_PROGRESS 0x01
#define ACP_POWERED_OFF 0x02
#define DELAY_US 5
#define ACP_TIMEOUT 500
#define ACP_ERROR_MASK 0x20000000
#define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
static struct snd_soc_acpi_codecs amp_rt1019 = {
.num_codecs = 1,
.codecs = {"10EC1019"}
@ -112,11 +126,130 @@ static struct snd_soc_dai_driver acp_renoir_dai[] = {
},
};
static int acp3x_power_on(void __iomem *base)
{
u32 val;
val = readl(base + ACP_PGFSM_STATUS);
if (val == ACP_POWERED_ON)
return 0;
if ((val & ACP_PGFSM_STAT_MASK) != ACP_PWR_ON_IN_PROGRESS)
writel(ACP_PWR_ON_MASK, base + ACP_PGFSM_CONTROL);
return readl_poll_timeout(base + ACP_PGFSM_STATUS, val, !val, DELAY_US, ACP_TIMEOUT);
}
static int acp3x_power_off(void __iomem *base)
{
u32 val;
writel(ACP_PWR_OFF_MASK, base + ACP_PGFSM_CONTROL);
return readl_poll_timeout(base + ACP_PGFSM_STATUS, val,
(val & ACP_PGFSM_STAT_MASK) == ACP_POWERED_OFF,
DELAY_US, ACP_TIMEOUT);
}
static int acp3x_reset(void __iomem *base)
{
u32 val;
int ret;
writel(1, base + ACP_SOFT_RESET);
ret = readl_poll_timeout(base + ACP_SOFT_RESET, val, val & ACP_SOFT_RST_DONE_MASK,
DELAY_US, ACP_TIMEOUT);
if (ret)
return ret;
writel(0, base + ACP_SOFT_RESET);
return readl_poll_timeout(base + ACP_SOFT_RESET, val, !val, DELAY_US, ACP_TIMEOUT);
}
static void acp3x_enable_interrupts(void __iomem *base)
{
u32 ext_intr_ctrl;
writel(0x01, base + ACP_EXTERNAL_INTR_ENB);
ext_intr_ctrl = readl(base + ACP_EXTERNAL_INTR_CNTL);
ext_intr_ctrl |= ACP_ERROR_MASK;
writel(ext_intr_ctrl, base + ACP_EXTERNAL_INTR_CNTL);
}
static void acp3x_disable_interrupts(void __iomem *base)
{
writel(ACP_EXT_INTR_STAT_CLEAR_MASK, base + ACP_EXTERNAL_INTR_STAT);
writel(0x00, base + ACP_EXTERNAL_INTR_ENB);
}
static int rn_acp_init(void __iomem *base)
{
int ret;
/* power on */
ret = acp3x_power_on(base);
if (ret)
return ret;
writel(0x01, base + ACP_CONTROL);
/* Reset */
ret = acp3x_reset(base);
if (ret)
return ret;
acp3x_enable_interrupts(base);
return 0;
}
static int rn_acp_deinit(void __iomem *base)
{
int ret = 0;
acp3x_disable_interrupts(base);
/* Reset */
ret = acp3x_reset(base);
if (ret)
return ret;
writel(0x00, base + ACP_CONTROL);
/* power off */
ret = acp3x_power_off(base);
if (ret)
return ret;
return 0;
}
static int renoir_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) {
dev_err(&pdev->dev, "ACP chip data is NULL\n");
return -ENODEV;
}
if (chip->acp_rev != ACP3X_DEV) {
dev_err(&pdev->dev, "Un-supported ACP Revision %d\n", chip->acp_rev);
return -ENODEV;
}
ret = rn_acp_init(chip->base);
if (ret) {
dev_err(&pdev->dev, "ACP Init failed\n");
return -EINVAL;
}
adata = devm_kzalloc(dev, sizeof(struct acp_dev_data), GFP_KERNEL);
if (!adata)
@ -155,6 +288,20 @@ static int renoir_audio_probe(struct platform_device *pdev)
static int renoir_audio_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct acp_chip_info *chip;
int ret;
chip = dev_get_platdata(&pdev->dev);
if (!chip || !chip->base) {
dev_err(&pdev->dev, "ACP chip data is NULL\n");
return -ENODEV;
}
ret = rn_acp_deinit(chip->base);
if (ret) {
dev_err(&pdev->dev, "ACP de-init Failed\n");
return -EINVAL;
}
acp_platform_unregister(dev);
return 0;

6
sound/soc/amd/acp/chip_offset_byte.h
View File

@ -14,6 +14,12 @@
#define ACPAXI2AXI_ATU_CTRL 0xC40
#define ACPAXI2AXI_ATU_PAGE_SIZE_GRP_5 0xC20
#define ACPAXI2AXI_ATU_BASE_ADDR_GRP_5 0xC24
#define ACP_PGFSM_CONTROL 0x141C
#define ACP_PGFSM_STATUS 0x1420
#define ACP_SOFT_RESET 0x1000
#define ACP_CONTROL 0x1004
#define ACP_EXTERNAL_INTR_ENB 0x1800
#define ACP_EXTERNAL_INTR_CNTL 0x1804
#define ACP_EXTERNAL_INTR_STAT 0x1808