Commit d5147006 authored by Eugen Hristev's avatar Eugen Hristev Committed by Mauro Carvalho Chehab
Browse files

media: atmel: atmel-isc: add support for version register 



Add support for version register and print it at probe time.

Signed-off-by: default avatarEugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent e8910098

drivers/media/platform/atmel/atmel-isc-regs.h

+5 −0
Original line number Diff line number Diff line
@@ -295,6 +295,11 @@ 
/* DMA Address 2 Register */

#define ISC_DAD2        0x000003fc



/* Offset for version register specific to sama5d2 product */

#define ISC_SAMA5D2_VERSION_OFFSET	0

/* Version Register */

#define ISC_VERSION	0x0000040c



/* Histogram Entry */

#define ISC_HIS_ENTRY	0x00000410

drivers/media/platform/atmel/atmel-isc.h

+2 −0
Original line number Diff line number Diff line
@@ -153,6 +153,7 @@ struct isc_ctrls { 
 * @rlp:		Offset for the RLP register

 * @his:		Offset for the HIS related registers

 * @dma:		Offset for the DMA related registers

 * @version:		Offset for the version register

 */

struct isc_reg_offsets {

	u32 csc;
@@ -162,6 +163,7 @@ struct isc_reg_offsets { 
	u32 rlp;

	u32 his;

	u32 dma;

	u32 version;

};



/*

drivers/media/platform/atmel/atmel-sama5d2-isc.c

+5 −0
Original line number Diff line number Diff line
@@ -189,6 +189,7 @@ static int atmel_isc_probe(struct platform_device *pdev) 
	struct isc_subdev_entity *subdev_entity;

	int irq;

	int ret;

	u32 ver;



	isc = devm_kzalloc(dev, sizeof(*isc), GFP_KERNEL);

	if (!isc)
@@ -237,6 +238,7 @@ static int atmel_isc_probe(struct platform_device *pdev) 
	isc->offsets.rlp = ISC_SAMA5D2_RLP_OFFSET;

	isc->offsets.his = ISC_SAMA5D2_HIS_OFFSET;

	isc->offsets.dma = ISC_SAMA5D2_DMA_OFFSET;

	isc->offsets.version = ISC_SAMA5D2_VERSION_OFFSET;



	/* sama5d2-isc - 8 bits per beat */

	isc->dcfg = ISC_DCFG_YMBSIZE_BEATS8 | ISC_DCFG_CMBSIZE_BEATS8;
@@ -332,6 +334,9 @@ static int atmel_isc_probe(struct platform_device *pdev) 
	pm_runtime_enable(dev);

	pm_request_idle(dev);



	regmap_read(isc->regmap, ISC_VERSION + isc->offsets.version, &ver);

	dev_info(dev, "Microchip ISC version %x\n", ver);



	return 0;



cleanup_subdev: