Commit 95844372 authored by Wu Hao's avatar Wu Hao Committed by Moritz Fischer
Browse files

fpga: dfl: afu: expose __afu_port_enable/disable function. 



As these two functions are used by other private features within the
same driver module but different driver files. e.g. in error reporting
private feature, it requires to clear errors when port is in reset.

Signed-off-by: default avatarXu Yilun <yilun.xu@intel.com>
Signed-off-by: default avatarWu Hao <hao.wu@intel.com>
Acked-by: default avatarMoritz Fischer <mdf@kernel.org>
Acked-by: default avatarAlan Tull <atull@kernel.org>
Signed-off-by: default avatarMoritz Fischer <mdf@kernel.org>
parent f09991ad

drivers/fpga/dfl-afu-main.c

+15 −11
Original line number Diff line number Diff line
@@ -22,14 +22,17 @@ 
#include "dfl-afu.h"



/**

 * port_enable - enable a port

 * __afu_port_enable - enable a port by clear reset

 * @pdev: port platform device.

 *

 * Enable Port by clear the port soft reset bit, which is set by default.

 * The AFU is unable to respond to any MMIO access while in reset.

 * port_enable function should only be used after port_disable function.

 * __afu_port_enable function should only be used after __afu_port_disable

 * function.

 *

 * The caller needs to hold lock for protection.

 */

static void port_enable(struct platform_device *pdev)

void __afu_port_enable(struct platform_device *pdev)

{

	struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);

	void __iomem *base;
@@ -52,13 +55,14 @@ static void port_enable(struct platform_device *pdev) 
#define RST_POLL_TIMEOUT 1000 /* us */



/**

 * port_disable - disable a port

 * __afu_port_disable - disable a port by hold reset

 * @pdev: port platform device.

 *

 * Disable Port by setting the port soft reset bit, it puts the port into

 * reset.

 * Disable Port by setting the port soft reset bit, it puts the port into reset.

 *

 * The caller needs to hold lock for protection.

 */

static int port_disable(struct platform_device *pdev)

int __afu_port_disable(struct platform_device *pdev)

{

	struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);

	void __iomem *base;
@@ -104,9 +108,9 @@ static int __port_reset(struct platform_device *pdev) 
{

	int ret;



	ret = port_disable(pdev);

	ret = __afu_port_disable(pdev);

	if (!ret)

		port_enable(pdev);

		__afu_port_enable(pdev);



	return ret;

}
@@ -799,9 +803,9 @@ static int port_enable_set(struct platform_device *pdev, bool enable) 


	mutex_lock(&pdata->lock);

	if (enable)

		port_enable(pdev);

		__afu_port_enable(pdev);

	else

		ret = port_disable(pdev);

		ret = __afu_port_disable(pdev);

	mutex_unlock(&pdata->lock);



	return ret;

drivers/fpga/dfl-afu.h

+4 −0
Original line number Diff line number Diff line
@@ -79,6 +79,10 @@ struct dfl_afu { 
	struct dfl_feature_platform_data *pdata;

};



/* hold pdata->lock when call __afu_port_enable/disable */

void __afu_port_enable(struct platform_device *pdev);

int __afu_port_disable(struct platform_device *pdev);



void afu_mmio_region_init(struct dfl_feature_platform_data *pdata);

int afu_mmio_region_add(struct dfl_feature_platform_data *pdata,

			u32 region_index, u64 region_size, u64 phys, u32 flags);

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