Unverified Commit 9766bb62 authored by Syed Saba Kareem's avatar Syed Saba Kareem Committed by Mark Brown
Browse files

ASoC: amd: add acp6.2 init/de-init functions 



Add Pink Sardine platform ACP6.2 PCI driver init/deinit functions.

Signed-off-by: default avatarSyed Saba Kareem <Syed.SabaKareem@amd.com>
Signed-off-by: default avatarVijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20220827165657.2343818-4-Syed.SabaKareem@amd.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 95e43a17

sound/soc/amd/ps/acp62.h

+12 −0
Original line number Diff line number Diff line
@@ -9,6 +9,18 @@ 


#define ACP_DEVICE_ID 0x15E2



#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 acp62_readl(void __iomem *base_addr)

{

	return readl(base_addr);

sound/soc/amd/ps/pci-ps.c

+106 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ 
#include <linux/pci.h>

#include <linux/module.h>

#include <linux/io.h>

#include <linux/delay.h>



#include "acp62.h"
@@ -15,6 +16,100 @@ struct acp62_dev_data { 
	void __iomem *acp62_base;

};



static int acp62_power_on(void __iomem *acp_base)

{

	u32 val;

	int timeout;



	val = acp62_readl(acp_base + ACP_PGFSM_STATUS);



	if (!val)

		return val;



	if ((val & ACP_PGFSM_STATUS_MASK) != ACP_POWER_ON_IN_PROGRESS)

		acp62_writel(ACP_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL);

	timeout = 0;

	while (++timeout < 500) {

		val = acp62_readl(acp_base + ACP_PGFSM_STATUS);

		if (!val)

			return 0;

		udelay(1);

	}

	return -ETIMEDOUT;

}



static int acp62_reset(void __iomem *acp_base)

{

	u32 val;

	int timeout;



	acp62_writel(1, acp_base + ACP_SOFT_RESET);

	timeout = 0;

	while (++timeout < 500) {

		val = acp62_readl(acp_base + ACP_SOFT_RESET);

		if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)

			break;

		cpu_relax();

	}

	acp62_writel(0, acp_base + ACP_SOFT_RESET);

	timeout = 0;

	while (++timeout < 500) {

		val = acp62_readl(acp_base + ACP_SOFT_RESET);

		if (!val)

			return 0;

		cpu_relax();

	}

	return -ETIMEDOUT;

}



static void acp62_enable_interrupts(void __iomem *acp_base)

{

	acp62_writel(1, acp_base + ACP_EXTERNAL_INTR_ENB);

}



static void acp62_disable_interrupts(void __iomem *acp_base)

{

	acp62_writel(ACP_EXT_INTR_STAT_CLEAR_MASK, acp_base +

		     ACP_EXTERNAL_INTR_STAT);

	acp62_writel(0, acp_base + ACP_EXTERNAL_INTR_CNTL);

	acp62_writel(0, acp_base + ACP_EXTERNAL_INTR_ENB);

}



static int acp62_init(void __iomem *acp_base, struct device *dev)

{

	int ret;



	ret = acp62_power_on(acp_base);

	if (ret) {

		dev_err(dev, "ACP power on failed\n");

		return ret;

	}

	acp62_writel(0x01, acp_base + ACP_CONTROL);

	ret = acp62_reset(acp_base);

	if (ret) {

		dev_err(dev, "ACP reset failed\n");

		return ret;

	}

	acp62_writel(0x03, acp_base + ACP_CLKMUX_SEL);

	acp62_enable_interrupts(acp_base);

	return 0;

}



static int acp62_deinit(void __iomem *acp_base, struct device *dev)

{

	int ret;



	acp62_disable_interrupts(acp_base);

	ret = acp62_reset(acp_base);

	if (ret) {

		dev_err(dev, "ACP reset failed\n");

		return ret;

	}

	acp62_writel(0, acp_base + ACP_CLKMUX_SEL);

	acp62_writel(0, acp_base + ACP_CONTROL);

	return 0;

}



static int snd_acp62_probe(struct pci_dev *pci,

			   const struct pci_device_id *pci_id)

{
@@ -56,6 +151,10 @@ static int snd_acp62_probe(struct pci_dev *pci, 
	}

	pci_set_master(pci);

	pci_set_drvdata(pci, adata);

	ret = acp62_init(adata->acp62_base, &pci->dev);

	if (ret)

		goto release_regions;



	return 0;

release_regions:

	pci_release_regions(pci);
@@ -67,6 +166,13 @@ static int snd_acp62_probe(struct pci_dev *pci, 


static void snd_acp62_remove(struct pci_dev *pci)

{

	struct acp62_dev_data *adata;

	int ret;



	adata = pci_get_drvdata(pci);

	ret = acp62_deinit(adata->acp62_base, &pci->dev);

	if (ret)

		dev_err(&pci->dev, "ACP de-init failed\n");

	pci_release_regions(pci);

	pci_disable_device(pci);

}