Commit b6707e77 authored by Michael Tretter's avatar Michael Tretter Committed by Mauro Carvalho Chehab
Browse files

media: allegro: lookup VCU settings 



The VCU provides information about its configuration in a dedicated
register space. These settings include, for example, the expected clock
rates and the configuration of the encoder buffer. In the device tree,
the settings are described by the "xlnx,vcu-settings" compatible.

The settings are needed to correctly configure the clocks and the
encoder buffer.

Lookup the VCU settings in the device tree and make it accessible to the
driver via a regmap.

Signed-off-by: default avatarMichael Tretter <m.tretter@pengutronix.de>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent dacc21d6

drivers/media/platform/allegro-dvt/allegro-core.c

+7 −0
Original line number Diff line number Diff line
@@ -12,6 +12,8 @@ 
#include <linux/io.h>

#include <linux/kernel.h>

#include <linux/log2.h>

#include <linux/mfd/syscon.h>

#include <linux/mfd/syscon/xlnx-vcu.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_device.h>
@@ -136,6 +138,7 @@ struct allegro_dev { 


	struct regmap *regmap;

	struct regmap *sram;

	struct regmap *settings;



	const struct fw_info *fw_info;

	struct allegro_buffer firmware;
@@ -3721,6 +3724,10 @@ static int allegro_probe(struct platform_device *pdev) 
		return PTR_ERR(dev->sram);

	}



	dev->settings = syscon_regmap_lookup_by_compatible("xlnx,vcu-settings");

	if (IS_ERR(dev->settings))

		dev_warn(&pdev->dev, "failed to open settings\n");



	irq = platform_get_irq(pdev, 0);

	if (irq < 0)

		return irq;