[PATCH 4/9] drm/i915: Add DSI panel power on/off sequence callbacks

From: Vidya Srinivas <vidya.srinivas@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: jani.nikula@intel.com, Vidya Srinivas <vidya.srinivas@intel.com>
Subject: [PATCH 4/9] drm/i915: Add DSI panel power on/off sequence callbacks
Date: Wed,  8 Feb 2017 16:20:53 +0530	[thread overview]
Message-ID: <1486551058-22596-5-git-send-email-vidya.srinivas@intel.com> (raw)
In-Reply-To: <1486551058-22596-1-git-send-email-vidya.srinivas@intel.com>

From: Uma Shankar <uma.shankar@intel.com>

Panel Power On/Off sequences are part of Panel spec.
These are present in VBT v3 of the Intel VBT spec.
Some DSI controller/panels require making SOC specific
device ready changes in between the panel power ON and
sending the OTP sequences.

This patch introduces panel power on callbacks to decouple
panel power ON and OTP.

Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com>
---
 drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index 8f683b8..4279279 100644
--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -547,10 +547,24 @@ static int vbt_panel_get_modes(struct drm_panel *panel)
 	return 1;
 }
 
+static int vbt_panel_power_on(struct drm_panel *panel)
+{
+	generic_exec_sequence(panel, MIPI_SEQ_POWER_ON);
+	return 0;
+}
+
+static int vbt_panel_power_off(struct drm_panel *panel)
+{
+	generic_exec_sequence(panel, MIPI_SEQ_POWER_OFF);
+	return 0;
+}
+
 static const struct drm_panel_funcs vbt_panel_funcs = {
 	.disable = vbt_panel_disable,
 	.unprepare = vbt_panel_unprepare,
 	.prepare = vbt_panel_prepare,
+	.power_on = vbt_panel_power_on,
+	.power_off = vbt_panel_power_off,
 	.enable = vbt_panel_enable,
 	.get_modes = vbt_panel_get_modes,
 };
-- 
1.9.1

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