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Commit 411d9ed4 authored by Tomasz Figa's avatar Tomasz Figa Committed by Inki Dae
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drm/exynos: fimd: Add support for FIMD variants with clock selection 



Some platforms that can be supported this driver has additional clock
source selection bits in VIDCON0 register that allows to select which
clock should be used to drive the pixel clock: bus clock or special
clock.

Since this driver assumes that special clock always drives the pixel
clock, this patch sets the selection bitfield to use the special clock.

Signed-off-by: default avatarTomasz Figa <tomasz.figa@gmail.com>
Acked-by: default avatarJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: default avatarInki Dae <inki.dae@samsung.com>
parent de7af100

drivers/gpu/drm/exynos/exynos_drm_fimd.c

+6 −0
Original line number Diff line number Diff line
@@ -65,6 +65,7 @@ struct fimd_driver_data { 
	unsigned int timing_base;



	unsigned int has_shadowcon:1;

	unsigned int has_clksel:1;

};



static struct fimd_driver_data exynos4_fimd_driver_data = {
@@ -278,6 +279,11 @@ static void fimd_commit(struct device *dev) 
	val = ctx->vidcon0;

	val &= ~(VIDCON0_CLKVAL_F_MASK | VIDCON0_CLKDIR);



	if (ctx->driver_data->has_clksel) {

		val &= ~VIDCON0_CLKSEL_MASK;

		val |= VIDCON0_CLKSEL_LCD;

	}



	if (ctx->clkdiv > 1)

		val |= VIDCON0_CLKVAL_F(ctx->clkdiv - 1) | VIDCON0_CLKDIR;

	else