Commit 55400d77 authored by Tomasz Figa's avatar Tomasz Figa Committed by Mauro Carvalho Chehab
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media: exynos4-is: Request syscon only if ISP writeback is present 



On FIMC variants which don't have writeback channel, there is no need to
access system registers. This patch makes the driver request sysreg
regmap conditionally depending on whether writeback is supported.

Signed-off-by: default avatarTomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: default avatarJonathan Bakker <xc-racer2@live.ca>
Reviewed-by: default avatarTomasz Figa <tfiga@chromium.org>
Reviewed-by: default avatarSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 40df2adc

drivers/media/platform/exynos4-is/fimc-core.c

+5 −3
Original line number Diff line number Diff line
@@ -954,9 +954,11 @@ static int fimc_probe(struct platform_device *pdev) 
	spin_lock_init(&fimc->slock);

	mutex_init(&fimc->lock);



	if (fimc->variant->has_isp_wb) {

		fimc->sysreg = fimc_get_sysreg_regmap(dev->of_node);

		if (IS_ERR(fimc->sysreg))

			return PTR_ERR(fimc->sysreg);

	}



	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	fimc->regs = devm_ioremap_resource(dev, res);