Unverified Commit 5d9ee88a authored by Vijendar Mukunda's avatar Vijendar Mukunda Committed by Mark Brown
Browse files

ASoc: amd: add acp5x init/de-init functions 



Add Vangogh ACP PCI driver init/deinit functions.

Reviewed-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: default avatarVijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20210721180430.11571-4-Vijendar.Mukunda@amd.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4a7151c9

sound/soc/amd/vangogh/acp5x.h

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


#define ACP5x_PHY_BASE_ADDRESS 0x1240000

#define ACP_DEVICE_ID 0x15E2

#define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK	0x00010001



#define ACP_PGFSM_CNTL_POWER_ON_MASK	0x01

#define ACP_PGFSM_CNTL_POWER_OFF_MASK	0x00

#define ACP_PGFSM_STATUS_MASK		0x03

#define ACP_POWERED_ON			0x00

#define ACP_POWER_ON_IN_PROGRESS	0x01

#define ACP_POWERED_OFF			0x02

#define ACP_POWER_OFF_IN_PROGRESS	0x03



#define ACP_ERR_INTR_MASK	0x20000000

#define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF



/* common header file uses exact offset rather than relative

 * offset which requires subtraction logic from base_addr

sound/soc/amd/vangogh/pci-acp5x.c

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

#include <linux/module.h>

#include <linux/io.h>

#include <linux/delay.h>



#include "acp5x.h"
@@ -14,6 +15,101 @@ struct acp5x_dev_data { 
	void __iomem *acp5x_base;

};



static int acp5x_power_on(void __iomem *acp5x_base)

{

	u32 val;

	int timeout;



	val = acp_readl(acp5x_base + ACP_PGFSM_STATUS);



	if (val == 0)

		return val;



	if ((val & ACP_PGFSM_STATUS_MASK) !=

				ACP_POWER_ON_IN_PROGRESS)

		acp_writel(ACP_PGFSM_CNTL_POWER_ON_MASK,

			   acp5x_base + ACP_PGFSM_CONTROL);

	timeout = 0;

	while (++timeout < 500) {

		val = acp_readl(acp5x_base + ACP_PGFSM_STATUS);

		if ((val & ACP_PGFSM_STATUS_MASK) == ACP_POWERED_ON)

			return 0;

		udelay(1);

	}

	return -ETIMEDOUT;

}



static int acp5x_reset(void __iomem *acp5x_base)

{

	u32 val;

	int timeout;



	acp_writel(1, acp5x_base + ACP_SOFT_RESET);

	timeout = 0;

	while (++timeout < 500) {

		val = acp_readl(acp5x_base + ACP_SOFT_RESET);

		if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)

			break;

		cpu_relax();

	}

	acp_writel(0, acp5x_base + ACP_SOFT_RESET);

	timeout = 0;

	while (++timeout < 500) {

		val = acp_readl(acp5x_base + ACP_SOFT_RESET);

		if (!val)

			return 0;

		cpu_relax();

	}

	return -ETIMEDOUT;

}



static void acp5x_enable_interrupts(void __iomem *acp5x_base)

{

	acp_writel(0x01, acp5x_base + ACP_EXTERNAL_INTR_ENB);

}



static void acp5x_disable_interrupts(void __iomem *acp5x_base)

{

	acp_writel(ACP_EXT_INTR_STAT_CLEAR_MASK, acp5x_base +

		   ACP_EXTERNAL_INTR_STAT);

	acp_writel(0x00, acp5x_base + ACP_EXTERNAL_INTR_CNTL);

	acp_writel(0x00, acp5x_base + ACP_EXTERNAL_INTR_ENB);

}



static int acp5x_init(void __iomem *acp5x_base)

{

	int ret;



	/* power on */

	ret = acp5x_power_on(acp5x_base);

	if (ret) {

		pr_err("ACP5x power on failed\n");

		return ret;

	}

	/* Reset */

	ret = acp5x_reset(acp5x_base);

	if (ret) {

		pr_err("ACP5x reset failed\n");

		return ret;

	}

	acp5x_enable_interrupts(acp5x_base);

	return 0;

}



static int acp5x_deinit(void __iomem *acp5x_base)

{

	int ret;



	acp5x_disable_interrupts(acp5x_base);

	/* Reset */

	ret = acp5x_reset(acp5x_base);

	if (ret) {

		pr_err("ACP5x reset failed\n");

		return ret;

	}

	return 0;

}



static int snd_acp5x_probe(struct pci_dev *pci,

			   const struct pci_device_id *pci_id)

{
@@ -50,6 +146,9 @@ static int snd_acp5x_probe(struct pci_dev *pci, 
	}

	pci_set_master(pci);

	pci_set_drvdata(pci, adata);

	ret = acp5x_init(adata->acp5x_base);

	if (ret)

		goto release_regions;



release_regions:

	pci_release_regions(pci);
@@ -61,6 +160,13 @@ static int snd_acp5x_probe(struct pci_dev *pci, 


static void snd_acp5x_remove(struct pci_dev *pci)

{

	struct acp5x_dev_data *adata;

	int ret;



	adata = pci_get_drvdata(pci);

	ret = acp5x_deinit(adata->acp5x_base);

	if (ret)

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

	pci_release_regions(pci);

	pci_disable_device(pci);

}