On Monday 18 April 2016 09:47 PM, ville.syrjala@xxxxxxxxxxxxxxx wrote:
From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
The power cycle delay starts _after_ turning off the panel power. Do the
msleep after frobbing the pmic panel power gpio.
Also toss in a FIXME about optimizing away needless waits.
Cc: Shobhit Kumar <shobhit.kumar@xxxxxxxxx>
Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
Fixes: fc45e8219907 ("drm/i915: Use the CRC gpio for panel enable/disable")
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Reviewed-by: Shobhit Kumar <shobhit.kumar@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dsi.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 34328ddaaab5..2b22bb9bb86f 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -688,11 +688,16 @@ static void intel_dsi_post_disable(struct intel_encoder *encoder)
drm_panel_unprepare(intel_dsi->panel);
msleep(intel_dsi->panel_off_delay);
- msleep(intel_dsi->panel_pwr_cycle_delay);
/* Panel Disable over CRC PMIC */
if (intel_dsi->gpio_panel)
gpiod_set_value_cansleep(intel_dsi->gpio_panel, 0);
+
+ /*
+ * FIXME As we do with eDP, just make a note of the time here
+ * and perform the wait before the next panel power on.
+ */
+ msleep(intel_dsi->panel_pwr_cycle_delay);
}
static bool intel_dsi_get_hw_state(struct intel_encoder *encoder,
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