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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: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Reviewed-by: Tomasz Figa <tfiga@chromium.org>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Tomasz Figa 2020-07-31 01:01:05 +02:00 committed by Mauro Carvalho Chehab
parent 40df2adca6
commit 55400d7745
1 changed files with 5 additions and 3 deletions
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8
drivers/media/platform/exynos4-is/fimc-core.c
View File

@ -954,9 +954,11 @@ static int fimc_probe(struct platform_device *pdev)
spin_lock_init(&fimc->slock);
mutex_init(&fimc->lock);
fimc->sysreg = fimc_get_sysreg_regmap(dev->of_node);
if (IS_ERR(fimc->sysreg))
return PTR_ERR(fimc->sysreg);
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);