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drm/i915/dsi: update reset and power sequences in panel prepare/unprepare hooks

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Based on the documentation alone, it's anyone's guess when exactly we
should be running these sequences. Add power on/off sequences where they
feel logical and update assert/deassert reset. The drm panel hooks don't
currently offer us more granularity anyway.

v2: update assert/deassert reset as well (Ville)

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1543320494df953fa073e136248238eaa1eed059.1474286487.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2016-09-19 15:02:27 +03:00
parent 044aad65ee
commit b1cb1bd291
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
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@ -459,6 +459,8 @@ static void generic_exec_sequence(struct drm_panel *panel, enum mipi_seq seq_id)
static int vbt_panel_prepare(struct drm_panel *panel) static int vbt_panel_prepare(struct drm_panel *panel)
{ {
generic_exec_sequence(panel, MIPI_SEQ_ASSERT_RESET); generic_exec_sequence(panel, MIPI_SEQ_ASSERT_RESET);
generic_exec_sequence(panel, MIPI_SEQ_POWER_ON);
generic_exec_sequence(panel, MIPI_SEQ_DEASSERT_RESET);
generic_exec_sequence(panel, MIPI_SEQ_INIT_OTP); generic_exec_sequence(panel, MIPI_SEQ_INIT_OTP);
return 0; return 0;
@ -466,7 +468,8 @@ static int vbt_panel_prepare(struct drm_panel *panel)
static int vbt_panel_unprepare(struct drm_panel *panel) static int vbt_panel_unprepare(struct drm_panel *panel)
{ {
generic_exec_sequence(panel, MIPI_SEQ_DEASSERT_RESET); generic_exec_sequence(panel, MIPI_SEQ_ASSERT_RESET);
generic_exec_sequence(panel, MIPI_SEQ_POWER_OFF);
return 0; return 0;
} }