blob: cccd123c9e0931e85bbb7185a235645ca686db4e [file] [log] [blame]
From 20397ab650e3678471b68e06a48aaa5db2d3a962 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@intel.com>
Date: Tue, 30 Jul 2013 12:20:30 +0300
Subject: drm/i915: rearrange vlv dp enable and pre_enable callbacks
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VLV wants encoder enabling before the pipe is up. This is currently
achieved through calling the ->enable callback early, right after the
->pre_enable callback, in valleyview_crtc_enable(). This loses both the
distinction between ->pre_enable and ->enable on VLV and the possibility
to use a hook at the end of the modeset sequence.
Rearrange the DP callbacks to make it possible to move ->enable call
later. Basically do everything in ->pre_enable on VLV, and make ->enable
a NOP.
There should be no functional changes.
v2: Rebase.
v3: Explain why this is needed in the commit message (Chris).
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit ab1f90f9662482021fddd0e7868005401f62866f)
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
---
drivers/gpu/drm/i915/intel_dp.c | 75 +++++++++++++++++++++-------------------
1 file changed, 40 insertions(+), 35 deletions(-)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1711,49 +1711,50 @@ static void intel_enable_dp(struct intel
intel_dp_complete_link_train(intel_dp);
intel_dp_stop_link_train(intel_dp);
ironlake_edp_backlight_on(intel_dp);
+}
- if (IS_VALLEYVIEW(dev)) {
- struct intel_digital_port *dport =
- enc_to_dig_port(&encoder->base);
- int channel = vlv_dport_to_channel(dport);
-
- vlv_wait_port_ready(dev_priv, channel);
- }
+static void vlv_enable_dp(struct intel_encoder *encoder)
+{
}
static void intel_pre_enable_dp(struct intel_encoder *encoder)
{
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
+
+ if (dport->port == PORT_A)
+ ironlake_edp_pll_on(intel_dp);
+}
+
+static void vlv_pre_enable_dp(struct intel_encoder *encoder)
+{
+ struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
+ struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
+ int port = vlv_dport_to_channel(dport);
+ int pipe = intel_crtc->pipe;
+ u32 val;
- if (dport->port == PORT_A && !IS_VALLEYVIEW(dev))
- ironlake_edp_pll_on(intel_dp);
+ mutex_lock(&dev_priv->dpio_lock);
- if (IS_VALLEYVIEW(dev)) {
- struct intel_crtc *intel_crtc =
- to_intel_crtc(encoder->base.crtc);
- int port = vlv_dport_to_channel(dport);
- int pipe = intel_crtc->pipe;
- u32 val;
-
- mutex_lock(&dev_priv->dpio_lock);
- val = vlv_dpio_read(dev_priv, DPIO_DATA_LANE_A(port));
- val = 0;
- if (pipe)
- val |= (1<<21);
- else
- val &= ~(1<<21);
- val |= 0x001000c4;
- vlv_dpio_write(dev_priv, DPIO_DATA_CHANNEL(port), val);
-
- vlv_dpio_write(dev_priv, DPIO_PCS_CLOCKBUF0(port),
- 0x00760018);
- vlv_dpio_write(dev_priv, DPIO_PCS_CLOCKBUF8(port),
- 0x00400888);
- mutex_unlock(&dev_priv->dpio_lock);
- }
+ val = vlv_dpio_read(dev_priv, DPIO_DATA_LANE_A(port));
+ val = 0;
+ if (pipe)
+ val |= (1<<21);
+ else
+ val &= ~(1<<21);
+ val |= 0x001000c4;
+ vlv_dpio_write(dev_priv, DPIO_DATA_CHANNEL(port), val);
+ vlv_dpio_write(dev_priv, DPIO_PCS_CLOCKBUF0(port), 0x00760018);
+ vlv_dpio_write(dev_priv, DPIO_PCS_CLOCKBUF8(port), 0x00400888);
+
+ mutex_unlock(&dev_priv->dpio_lock);
+
+ intel_enable_dp(encoder);
+
+ vlv_wait_port_ready(dev_priv, port);
}
static void intel_dp_pre_pll_enable(struct intel_encoder *encoder)
@@ -3549,14 +3550,18 @@ intel_dp_init(struct drm_device *dev, in
intel_encoder->compute_config = intel_dp_compute_config;
intel_encoder->mode_set = intel_dp_mode_set;
- intel_encoder->enable = intel_enable_dp;
- intel_encoder->pre_enable = intel_pre_enable_dp;
intel_encoder->disable = intel_disable_dp;
intel_encoder->post_disable = intel_post_disable_dp;
intel_encoder->get_hw_state = intel_dp_get_hw_state;
intel_encoder->get_config = intel_dp_get_config;
- if (IS_VALLEYVIEW(dev))
+ if (IS_VALLEYVIEW(dev)) {
intel_encoder->pre_pll_enable = intel_dp_pre_pll_enable;
+ intel_encoder->pre_enable = vlv_pre_enable_dp;
+ intel_encoder->enable = vlv_enable_dp;
+ } else {
+ intel_encoder->pre_enable = intel_pre_enable_dp;
+ intel_encoder->enable = intel_enable_dp;
+ }
intel_dig_port->port = port;
intel_dig_port->dp.output_reg = output_reg;