From: Syed Saba Kareem Syed.SabaKareem@amd.com
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 --- sound/soc/amd/rpl/rpl-pci-acp6x.c | 92 +++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+)
diff --git a/sound/soc/amd/rpl/rpl-pci-acp6x.c b/sound/soc/amd/rpl/rpl-pci-acp6x.c index 7a82a978cf24..71ae90a00f36 100644 --- a/sound/soc/amd/rpl/rpl-pci-acp6x.c +++ b/sound/soc/amd/rpl/rpl-pci-acp6x.c @@ -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 @@ static int snd_rpl_probe(struct pci_dev *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); }