LinuxLists.cc - [PATCH 03/13] ASoC: amd: add acp6x init/de-init functions

2021-10-11 07:04:02

Subject: [PATCH 03/13] ASoC: amd: add acp6x init/de-init functions

Add Yellow Carp platform ACP6x PCI driver init/deinit functions.

Signed-off-by: Vijendar Mukunda <[email protected]>
---
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 2965e8b00314..56fd7cdbc442 100644
--- a/sound/soc/amd/yc/pci-acp6x.c
+++ b/sound/soc/amd/yc/pci-acp6x.c
@@ -7,6 +7,7 @@
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/io.h>
+#include <linux/delay.h>

#include "acp6x.h"

@@ -14,6 +15,103 @@ 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 == 0)
+ 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)
{
@@ -52,6 +150,10 @@ 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);
@@ -63,6 +165,13 @@ 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);
}
--
2.25.1

2021-10-11 16:20:03

by Gong, Richard

[permalink] [raw]

Subject: Re: [PATCH 03/13] ASoC: amd: add acp6x init/de-init functions

On 10/11/2021 12:56 AM, Vijendar Mukunda wrote:
> Add Yellow Carp platform ACP6x PCI driver init/deinit functions.
>
> Signed-off-by: Vijendar Mukunda <[email protected]>
> ---
> 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 2965e8b00314..56fd7cdbc442 100644
> --- a/sound/soc/amd/yc/pci-acp6x.c
> +++ b/sound/soc/amd/yc/pci-acp6x.c
> @@ -7,6 +7,7 @@
> #include <linux/pci.h>
> #include <linux/module.h>
> #include <linux/io.h>
> +#include <linux/delay.h>
>
> #include "acp6x.h"
>
> @@ -14,6 +15,103 @@ 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 == 0)
s/val == 0/!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)
> {
> @@ -52,6 +150,10 @@ 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);
> @@ -63,6 +165,13 @@ 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);
> }

2021-10-11 16:20:46

by Gong, Richard

[permalink] [raw]

Subject: Re: [PATCH 03/13] ASoC: amd: add acp6x init/de-init functions

2021-10-11 16:21:00

by Vijendar Mukunda

[permalink] [raw]

Subject: Re: [PATCH 03/13] ASoC: amd: add acp6x init/de-init functions

On 10/11/21 4:36 PM, Gong, Richard wrote:
>
> On 10/11/2021 12:56 AM, Vijendar Mukunda wrote:
>> Add Yellow Carp platform ACP6x PCI driver init/deinit functions.
>>
>> Signed-off-by: Vijendar Mukunda <[email protected]>
>> ---
>> 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 2965e8b00314..56fd7cdbc442 100644
>> --- a/sound/soc/amd/yc/pci-acp6x.c
>> +++ b/sound/soc/amd/yc/pci-acp6x.c
>> @@ -7,6 +7,7 @@
>> #include <linux/pci.h>
>> #include <linux/module.h>
>> #include <linux/io.h>
>> +#include <linux/delay.h>
>> #include "acp6x.h"
>> @@ -14,6 +15,103 @@ 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 == 0)
> s/val == 0/!val
Will fix it and post the new version.
>> +        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)
>> {
>> @@ -52,6 +150,10 @@ 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);
>> @@ -63,6 +165,13 @@ 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);
>> }