Attachment 117801 Details for Bug 90469 – patch

[patch] patch

0001-drm-i915-Execute-RESET-sequence-before-device-ready.patch (text/plain), 3.38 KB, created by Deepak M on 2015-08-20 06:21:42 UTC

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Creator: Deepak M

Created: 2015-08-20 06:21:42 UTC

Size: 3.38 KB

patch

obsolete

>From 7521e61fc3316a1de631f0127fd54bb01dd6659c Mon Sep 17 00:00:00 2001
>From: Deepak M <m.deepak@intel.com>
>Date: Thu, 20 Aug 2015 11:49:58 +0530
>Subject: [PATCH] drm/i915: Execute RESET sequence before device ready
>
>Before setting the MIPI device to ready state, execute the RESET
>sequence.
>
>Signed-off-by: Gaurav K Singh <gaurav.k.singh@intel.com>
>---
> drivers/gpu/drm/i915/intel_dsi.c           |    2 ++
> drivers/gpu/drm/i915/intel_dsi_panel_vbt.c |   14 +++++++++++++-
> include/drm/drm_panel.h                    |    9 +++++++++
> 3 files changed, 24 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
>index 4a601cf..a34a73a 100644
>--- a/drivers/gpu/drm/i915/intel_dsi.c
>+++ b/drivers/gpu/drm/i915/intel_dsi.c
>@@ -433,6 +433,8 @@ static void intel_dsi_pre_enable(struct intel_encoder *encoder)
> 	tmp |= DPOUNIT_CLOCK_GATE_DISABLE;
> 	I915_WRITE(DSPCLK_GATE_D, tmp);
> 
>+	drm_panel_reset(intel_dsi->panel);
>+
> 	/* put device in ready state */
> 	intel_dsi_device_ready(encoder);
> 
>diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
>index bdbaaf18..c2f3c9b 100644
>--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
>+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
>@@ -352,7 +352,7 @@ static void generic_exec_sequence(struct intel_dsi *intel_dsi, const u8 *data)
> 	}
> }
> 
>-static int vbt_panel_prepare(struct drm_panel *panel)
>+static int vbt_panel_reset(struct drm_panel *panel)
> {
> 	struct vbt_panel *vbt_panel = to_vbt_panel(panel);
> 	struct intel_dsi *intel_dsi = vbt_panel->intel_dsi;
>@@ -363,6 +363,17 @@ static int vbt_panel_prepare(struct drm_panel *panel)
> 	sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_ASSERT_RESET];
> 	generic_exec_sequence(intel_dsi, sequence);
> 
>+	return 0;
>+
>+}
>+static int vbt_panel_prepare(struct drm_panel *panel)
>+{
>+	struct vbt_panel *vbt_panel = to_vbt_panel(panel);
>+	struct intel_dsi *intel_dsi = vbt_panel->intel_dsi;
>+	struct drm_device *dev = intel_dsi->base.base.dev;
>+	struct drm_i915_private *dev_priv = dev->dev_private;
>+	const u8 *sequence;
>+
> 	sequence = dev_priv->vbt.dsi.sequence[MIPI_SEQ_INIT_OTP];
> 	generic_exec_sequence(intel_dsi, sequence);
> 
>@@ -437,6 +448,7 @@ static const struct drm_panel_funcs vbt_panel_funcs = {
> 	.disable = vbt_panel_disable,
> 	.unprepare = vbt_panel_unprepare,
> 	.prepare = vbt_panel_prepare,
>+	.reset = vbt_panel_reset,
> 	.enable = vbt_panel_enable,
> 	.get_modes = vbt_panel_get_modes,
> };
>diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
>index 13ff44b..0920862 100644
>--- a/include/drm/drm_panel.h
>+++ b/include/drm/drm_panel.h
>@@ -69,6 +69,7 @@ struct drm_panel_funcs {
> 	int (*disable)(struct drm_panel *panel);
> 	int (*unprepare)(struct drm_panel *panel);
> 	int (*prepare)(struct drm_panel *panel);
>+	int (*reset)(struct drm_panel *panel);
> 	int (*enable)(struct drm_panel *panel);
> 	int (*get_modes)(struct drm_panel *panel);
> 	int (*get_timings)(struct drm_panel *panel, unsigned int num_timings,
>@@ -101,6 +102,14 @@ static inline int drm_panel_disable(struct drm_panel *panel)
> 	return panel ? -ENOSYS : -EINVAL;
> }
> 
>+static inline int drm_panel_reset(struct drm_panel *panel)
>+{
>+	if (panel && panel->funcs && panel->funcs->prepare)
>+		return panel->funcs->reset(panel);
>+
>+	return panel ? -ENOSYS : -EINVAL;
>+}
>+
> static inline int drm_panel_prepare(struct drm_panel *panel)
> {
> 	if (panel && panel->funcs && panel->funcs->prepare)
>-- 
>1.7.9.5
>

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