Unverified Commit 97eb57fe authored by Jernej Skrabec's avatar Jernej Skrabec Committed by Maxime Ripard
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drm/sun4i: Disable unused DE2 sub-engines 



Some sub-engines are unused. Disable them explicitly.

Signed-off-by: default avatarJernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181104182705.18047-12-jernej.skrabec@siol.net
parent 218d6a3c

drivers/gpu/drm/sun4i/sun8i_mixer.c

+9 −0
Original line number Diff line number Diff line
@@ -463,6 +463,15 @@ static int sun8i_mixer_bind(struct device *dev, struct device *master, 
	for (i = 0; i < DE2_MIXER_UNIT_SIZE; i += 4)

		regmap_write(mixer->engine.regs, i, 0);



	/* Disable unused sub-engines */

	regmap_write(mixer->engine.regs, SUN8I_MIXER_FCE_EN, 0);

	regmap_write(mixer->engine.regs, SUN8I_MIXER_BWS_EN, 0);

	regmap_write(mixer->engine.regs, SUN8I_MIXER_LTI_EN, 0);

	regmap_write(mixer->engine.regs, SUN8I_MIXER_PEAK_EN, 0);

	regmap_write(mixer->engine.regs, SUN8I_MIXER_ASE_EN, 0);

	regmap_write(mixer->engine.regs, SUN8I_MIXER_FCC_EN, 0);

	regmap_write(mixer->engine.regs, SUN8I_MIXER_DCSC_EN, 0);



	/* Enable the mixer */

	regmap_write(mixer->engine.regs, SUN8I_MIXER_GLOBAL_CTL,

		     SUN8I_MIXER_GLOBAL_CTL_RT_EN);

drivers/gpu/drm/sun4i/sun8i_mixer.h

+2 −2
Original line number Diff line number Diff line
@@ -101,8 +101,8 @@ 
#define SUN8I_MIXER_FBFMT_YUV411	14



/*

 * These sub-engines are still unknown now, the EN registers are here only to

 * be used to disable these sub-engines.

 * Sub-engines listed bellow are unused for now. The EN registers are here only

 * to be used to disable these sub-engines.

 */

#define SUN8I_MIXER_FCE_EN			0xa0000

#define SUN8I_MIXER_BWS_EN			0xa2000

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