DSI backlight support for bxt is added.
TODO: There is no support for backlight control in drm panel
framework. This will be added as part of VBT version patches
fixing the backlight sequence.
v2: Fixed Jani's review comments from previous patch. Added the
BXT DSI backlight code in this patch. Backlight setup and
enable/disable code for backlight is added in intel_dsi.c.
Signed-off-by: Uma Shankar <uma.shan...@intel.com>
---
drivers/gpu/drm/i915/intel_dsi.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index d0b26c8..36fcb86 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -431,6 +431,7 @@ static void intel_dsi_enable(struct intel_encoder *encoder)
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+ struct intel_connector *intel_connector = intel_dsi->attached_connector;
enum port port;
DRM_DEBUG_KMS("\n");
@@ -451,6 +452,16 @@ static void intel_dsi_enable(struct intel_encoder *encoder)
intel_dsi_port_enable(encoder);
}
+
+ if (IS_BROXTON(dev)) {
+ if (intel_dsi->backlight_on_delay >= 20)
+ msleep(intel_dsi->backlight_on_delay);
+ else
+ usleep_range(intel_dsi->backlight_on_delay * 1000,
+ (intel_dsi->backlight_on_delay * 1000)
+ 500);
+
+ intel_panel_enable_backlight(intel_connector);
+ }
}
static void intel_dsi_pre_enable(struct intel_encoder *encoder)
@@ -615,10 +626,20 @@ static void intel_dsi_post_disable(struct intel_encoder
*encoder)
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
+ struct intel_connector *intel_connector = intel_dsi->attached_connector;
u32 val;
DRM_DEBUG_KMS("\n");
+ if (IS_BROXTON(dev)) {
+ intel_panel_disable_backlight(intel_connector);
+ if (intel_dsi->backlight_off_delay >= 20)
+ msleep(intel_dsi->backlight_off_delay);
+ else
+ usleep_range(intel_dsi->backlight_off_delay * 1000,
+ (intel_dsi->backlight_off_delay * 1000) + 500);
+ }
+
intel_dsi_disable(encoder);
intel_dsi_clear_device_ready(encoder);
@@ -1213,9 +1234,11 @@ void intel_dsi_init(struct drm_device *dev)
}
intel_panel_init(&intel_connector->panel, fixed_mode, NULL);
+ if (IS_BROXTON(dev))
+ intel_panel_setup_backlight(connector,
+ intel_encoder->crtc_mask == (1 << PIPE_A) ? PIPE_A :
PIPE_B);
return;
-
err:
drm_encoder_cleanup(&intel_encoder->base);
kfree(intel_dsi);
--
1.7.9.5
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