diff mbox series

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

Message ID 20211011055621.13240-4-Vijendar.Mukunda@amd.com (mailing list archive)
State Superseded
Headers show
Series Add Yellow Carp platform ASoC driver | expand

Commit Message

Vijendar Mukunda Oct. 11, 2021, 5:56 a.m. UTC
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(+)

Comments

Gong, Richard Oct. 11, 2021, 11:04 a.m. UTC | #1
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 <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 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);
>   }
Gong, Richard Oct. 11, 2021, 11:06 a.m. UTC | #2
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 <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 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);
>   }
Vijendar Mukunda Oct. 11, 2021, 11:40 a.m. UTC | #3
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 <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 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);
>>   }
diff mbox series

Patch

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);
 }