Commit a4a69d13 authored by Michael Tretter's avatar Michael Tretter Committed by Mauro Carvalho Chehab
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media: imx-pxp: detect PXP version 



Different versions of the Pixel Pipeline have different blocks and their
routing may be different. Read the PXP_HW_VERSION register to determine
the version of the PXP and print it to the log for debugging purposes.

Signed-off-by: default avatarMichael Tretter <m.tretter@pengutronix.de>
Reviewed-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent 3ac7165d

drivers/media/platform/nxp/imx-pxp.c

+11 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
 * Pawel Osciak, <pawel@osciak.com>

 * Marek Szyprowski, <m.szyprowski@samsung.com>

 */

#include <linux/bitfield.h>

#include <linux/clk.h>

#include <linux/delay.h>

#include <linux/dma-mapping.h>
@@ -52,6 +53,11 @@ MODULE_PARM_DESC(debug, "activates debug info"); 
#define MEM2MEM_HFLIP	(1 << 0)

#define MEM2MEM_VFLIP	(1 << 1)



#define PXP_VERSION_MAJOR(version) \

	FIELD_GET(BM_PXP_VERSION_MAJOR, version)

#define PXP_VERSION_MINOR(version) \

	FIELD_GET(BM_PXP_VERSION_MINOR, version)



#define dprintk(dev, fmt, arg...) \

	v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: " fmt, __func__, ## arg)
@@ -1664,6 +1670,7 @@ static int pxp_probe(struct platform_device *pdev) 
{

	struct pxp_dev *dev;

	struct video_device *vfd;

	u32 hw_version;

	int irq;

	int ret;
@@ -1705,6 +1712,10 @@ static int pxp_probe(struct platform_device *pdev) 
		goto err_clk;

	}



	hw_version = readl(dev->mmio + HW_PXP_VERSION);

	dev_dbg(&pdev->dev, "PXP Version %u.%u\n",

		PXP_VERSION_MAJOR(hw_version), PXP_VERSION_MINOR(hw_version));



	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);

	if (ret)

		goto err_clk;