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drm/sun4i: Disable unused DE2 sub-engines

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Some sub-engines are unused. Disable them explicitly.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181104182705.18047-12-jernej.skrabec@siol.net
This commit is contained in:
Jernej Skrabec 2018-11-04 19:26:48 +01:00 committed by Maxime Ripard
parent 218d6a3cfc
commit 97eb57feda
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GPG Key ID: E3EF0D6F671851C5
2 changed files with 11 additions and 2 deletions
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9
drivers/gpu/drm/sun4i/sun8i_mixer.c
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@ -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);

4
drivers/gpu/drm/sun4i/sun8i_mixer.h
View File

@ -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