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ASoC: amd: add RPL Platform init/de-init functions 

Add RPL Platform ACP init/de-init functions.

Signed-off-by: Syed Saba Kareem <Syed.SabaKareem@amd.com>
Reviewed-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20220721061035.91139-3-Syed.SabaKareem@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Syed Saba Kareem 2022-07-21 11:40:00 +05:30 committed by Mark Brown
parent 003b9a96f2
commit 1059920541
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GPG Key ID: 24D68B725D5487D0
1 changed files with 92 additions and 0 deletions
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92
sound/soc/amd/rpl/rpl-pci-acp6x.c
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@ -17,6 +17,88 @@ struct rpl_dev_data {
void __iomem *acp6x_base;
};
static int rpl_power_on(void __iomem *acp_base)
{
u32 val;
int timeout;
val = rpl_acp_readl(acp_base + ACP_PGFSM_STATUS);
if (!val)
return val;
if ((val & ACP_PGFSM_STATUS_MASK) != ACP_POWER_ON_IN_PROGRESS)
rpl_acp_writel(ACP_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL);
timeout = 0;
while (++timeout < 500) {
val = rpl_acp_readl(acp_base + ACP_PGFSM_STATUS);
if (!val)
return 0;
udelay(1);
}
return -ETIMEDOUT;
}
static int rpl_reset(void __iomem *acp_base)
{
u32 val;
int timeout;
rpl_acp_writel(1, acp_base + ACP_SOFT_RESET);
timeout = 0;
while (++timeout < 500) {
val = rpl_acp_readl(acp_base + ACP_SOFT_RESET);
if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)
break;
cpu_relax();
}
rpl_acp_writel(0, acp_base + ACP_SOFT_RESET);
timeout = 0;
while (++timeout < 500) {
val = rpl_acp_readl(acp_base + ACP_SOFT_RESET);
if (!val)
return 0;
cpu_relax();
}
return -ETIMEDOUT;
}
static int rpl_init(void __iomem *acp_base)
{
int ret;
/* power on */
ret = rpl_power_on(acp_base);
if (ret) {
pr_err("ACP power on failed\n");
return ret;
}
rpl_acp_writel(0x01, acp_base + ACP_CONTROL);
/* Reset */
ret = rpl_reset(acp_base);
if (ret) {
pr_err("ACP reset failed\n");
return ret;
}
rpl_acp_writel(0x03, acp_base + ACP_CLKMUX_SEL);
return 0;
}
static int rpl_deinit(void __iomem *acp_base)
{
int ret;
/* Reset */
ret = rpl_reset(acp_base);
if (ret) {
pr_err("ACP reset failed\n");
return ret;
}
rpl_acp_writel(0x00, acp_base + ACP_CLKMUX_SEL);
rpl_acp_writel(0x00, acp_base + ACP_CONTROL);
return 0;
}
static int snd_rpl_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
@ -59,6 +141,9 @@ static int snd_rpl_probe(struct pci_dev *pci,
}
pci_set_master(pci);
pci_set_drvdata(pci, adata);
ret = rpl_init(adata->acp6x_base);
if (ret)
goto release_regions;
return 0;
release_regions:
pci_release_regions(pci);
@ -70,6 +155,13 @@ disable_pci:
static void snd_rpl_remove(struct pci_dev *pci)
{
struct rpl_dev_data *adata;
int ret;
adata = pci_get_drvdata(pci);
ret = rpl_deinit(adata->acp6x_base);
if (ret)
dev_err(&pci->dev, "ACP de-init failed\n");
pci_release_regions(pci);
pci_disable_device(pci);
}