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drm/panel: ilitek-ili9881c: Fix warning with GPIO controllers that sleep

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[ Upstream commit ee7860cd8b ]

The ilitek-ili9881c controls the reset GPIO using the non-sleeping
gpiod_set_value() function. This complains loudly when the GPIO
controller needs to sleep. As the caller can sleep, use
gpiod_set_value_cansleep() to fix the issue.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240317154839.21260-1-laurent.pinchart@ideasonboard.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240317154839.21260-1-laurent.pinchart@ideasonboard.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Laurent Pinchart 2024-03-17 17:48:39 +02:00 committed by Greg Kroah-Hartman
parent 08f6c05feb
commit 1618f7a875
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
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@ -883,10 +883,10 @@ static int ili9881c_prepare(struct drm_panel *panel)
msleep(5); msleep(5);
/* And reset it */ /* And reset it */
gpiod_set_value(ctx->reset, 1); gpiod_set_value_cansleep(ctx->reset, 1);
msleep(20); msleep(20);
gpiod_set_value(ctx->reset, 0); gpiod_set_value_cansleep(ctx->reset, 0);
msleep(20); msleep(20);
for (i = 0; i < ctx->desc->init_length; i++) { for (i = 0; i < ctx->desc->init_length; i++) {
@ -941,7 +941,7 @@ static int ili9881c_unprepare(struct drm_panel *panel)
mipi_dsi_dcs_enter_sleep_mode(ctx->dsi); mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);
regulator_disable(ctx->power); regulator_disable(ctx->power);
gpiod_set_value(ctx->reset, 1); gpiod_set_value_cansleep(ctx->reset, 1);
return 0; return 0;
} }