Add Yellow Carp platform ACP6x PCI driver init/deinit functions.
Signed-off-by: Vijendar Mukunda Vijendar.Mukunda@amd.com --- sound/soc/amd/yc/acp6x.h | 12 ++++ sound/soc/amd/yc/pci-acp6x.c | 109 +++++++++++++++++++++++++++++++++++ 2 files changed, 121 insertions(+)
diff --git a/sound/soc/amd/yc/acp6x.h b/sound/soc/amd/yc/acp6x.h index 62a05db5e34c..76e9e860e9bb 100644 --- a/sound/soc/amd/yc/acp6x.h +++ b/sound/soc/amd/yc/acp6x.h @@ -10,6 +10,18 @@ #define ACP_DEVICE_ID 0x15E2 #define ACP6x_PHY_BASE_ADDRESS 0x1240000
+#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 acp6x_readl(void __iomem *base_addr) { return readl(base_addr - ACP6x_PHY_BASE_ADDRESS); diff --git a/sound/soc/amd/yc/pci-acp6x.c b/sound/soc/amd/yc/pci-acp6x.c index 5c118328ea21..03af3476a97c 100644 --- a/sound/soc/amd/yc/pci-acp6x.c +++ b/sound/soc/amd/yc/pci-acp6x.c @@ -8,6 +8,7 @@ #include <linux/pci.h> #include <linux/module.h> #include <linux/io.h> +#include <linux/delay.h>
#include "acp6x.h"
@@ -15,6 +16,103 @@ struct acp6x_dev_data { void __iomem *acp6x_base; };
+static int acp6x_power_on(void __iomem *acp_base) +{ + u32 val; + int timeout; + + val = acp6x_readl(acp_base + ACP_PGFSM_STATUS); + + if (!val) + return val; + + if ((val & ACP_PGFSM_STATUS_MASK) != ACP_POWER_ON_IN_PROGRESS) + acp6x_writel(ACP_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL); + timeout = 0; + while (++timeout < 500) { + val = acp6x_readl(acp_base + ACP_PGFSM_STATUS); + if (!val) + return 0; + udelay(1); + } + return -ETIMEDOUT; +} + +static int acp6x_reset(void __iomem *acp_base) +{ + u32 val; + int timeout; + + acp6x_writel(1, acp_base + ACP_SOFT_RESET); + timeout = 0; + while (++timeout < 500) { + val = acp6x_readl(acp_base + ACP_SOFT_RESET); + if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK) + break; + cpu_relax(); + } + acp6x_writel(0, acp_base + ACP_SOFT_RESET); + timeout = 0; + while (++timeout < 500) { + val = acp6x_readl(acp_base + ACP_SOFT_RESET); + if (!val) + return 0; + cpu_relax(); + } + return -ETIMEDOUT; +} + +static void acp6x_enable_interrupts(void __iomem *acp_base) +{ + acp6x_writel(0x01, acp_base + ACP_EXTERNAL_INTR_ENB); +} + +static void acp6x_disable_interrupts(void __iomem *acp_base) +{ + acp6x_writel(ACP_EXT_INTR_STAT_CLEAR_MASK, acp_base + + ACP_EXTERNAL_INTR_STAT); + acp6x_writel(0x00, acp_base + ACP_EXTERNAL_INTR_CNTL); + acp6x_writel(0x00, acp_base + ACP_EXTERNAL_INTR_ENB); +} + +static int acp6x_init(void __iomem *acp_base) +{ + int ret; + + /* power on */ + ret = acp6x_power_on(acp_base); + if (ret) { + pr_err("ACP power on failed\n"); + return ret; + } + acp6x_writel(0x01, acp_base + ACP_CONTROL); + /* Reset */ + ret = acp6x_reset(acp_base); + if (ret) { + pr_err("ACP reset failed\n"); + return ret; + } + acp6x_writel(0x03, acp_base + ACP_CLKMUX_SEL); + acp6x_enable_interrupts(acp_base); + return 0; +} + +static int acp6x_deinit(void __iomem *acp_base) +{ + int ret; + + acp6x_disable_interrupts(acp_base); + /* Reset */ + ret = acp6x_reset(acp_base); + if (ret) { + pr_err("ACP reset failed\n"); + return ret; + } + acp6x_writel(0x00, acp_base + ACP_CLKMUX_SEL); + acp6x_writel(0x00, acp_base + ACP_CONTROL); + return 0; +} + static int snd_acp6x_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) { @@ -53,6 +151,10 @@ static int snd_acp6x_probe(struct pci_dev *pci, } pci_set_master(pci); pci_set_drvdata(pci, adata); + ret = acp6x_init(adata->acp6x_base); + if (ret) + goto release_regions; + return 0; release_regions: pci_release_regions(pci); @@ -64,6 +166,13 @@ static int snd_acp6x_probe(struct pci_dev *pci,
static void snd_acp6x_remove(struct pci_dev *pci) { + struct acp6x_dev_data *adata; + int ret; + + adata = pci_get_drvdata(pci); + ret = acp6x_deinit(adata->acp6x_base); + if (ret) + dev_err(&pci->dev, "ACP de-init failed\n"); pci_release_regions(pci); pci_disable_device(pci); }