[Intel-gfx] [PATCH v3] drm/i915: Fix port_clock and adjusted_mode.clock readout all over
ville.syrjala at linux.intel.com
ville.syrjala at linux.intel.com
Mon Sep 9 13:34:21 CEST 2013
From: Ville Syrjälä <ville.syrjala at linux.intel.com>
Now that adjusted_mode.clock no longer contains the pixel_multiplier, we
can kill the get_clock() callback and instead do the clock readout
in get_pipe_config().
Also i9xx_crtc_clock_get() can now extract the frequency of the PCH
DPLL, so use it to populate port_clock accurately for PCH encoders.
For DP in port A the encoder is still responsible for filling in
port_clock. The FDI adjusted_mode.clock extraction is kept in place
for some extra sanity checking, but we no longer need to pretend it's
also the port_clock.
In the encoder get_config() functions fill out adjusted_mode.clock
based on port_clock and other details such as the DP M/N values,
HDMI 12bpc and SDVO pixel_multiplier. For PCH encoders we will then
do an extra sanity check to make sure the dotclock we derived from
the FDI configuratiuon matches the one we derive from port_clock.
DVO doesn't exist on PCH platforms, so it doesn't need to anything
but assign adjusted_mode.clock=port_clock. And DDI is HSW only, so
none of the changes apply there.
v2: Use hdmi_reg color format to detect 12bpc HDMI case
v3: Set adjusted_mode.clock for LVDS too
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 1 -
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_crt.c | 8 ++++++
drivers/gpu/drm/i915/intel_display.c | 47 ++++++++++++++++++++++++------------
drivers/gpu/drm/i915/intel_dp.c | 11 ++++++++-
drivers/gpu/drm/i915/intel_drv.h | 2 ++
drivers/gpu/drm/i915/intel_dvo.c | 2 ++
drivers/gpu/drm/i915/intel_hdmi.c | 11 +++++++++
drivers/gpu/drm/i915/intel_lvds.c | 8 ++++++
drivers/gpu/drm/i915/intel_sdvo.c | 8 ++++++
10 files changed, 81 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 769c138..09fc308 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -369,7 +369,6 @@ struct drm_i915_display_funcs {
* fills out the pipe-config with the hw state. */
bool (*get_pipe_config)(struct intel_crtc *,
struct intel_crtc_config *);
- void (*get_clock)(struct intel_crtc *, struct intel_crtc_config *);
int (*crtc_mode_set)(struct drm_crtc *crtc,
int x, int y,
struct drm_framebuffer *old_fb);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index c7f2da3..ace9443 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -2071,6 +2071,7 @@
/* Gen 4 SDVO/HDMI bits: */
#define SDVO_COLOR_FORMAT_8bpc (0 << 26)
+#define SDVO_COLOR_FORMAT_MASK (7 << 26)
#define SDVO_ENCODING_SDVO (0 << 10)
#define SDVO_ENCODING_HDMI (2 << 10)
#define HDMI_MODE_SELECT_HDMI (1 << 9) /* HDMI only */
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index ea9022e..be99cf2 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -89,6 +89,7 @@ static void intel_crt_get_config(struct intel_encoder *encoder,
struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
struct intel_crt *crt = intel_encoder_to_crt(encoder);
u32 tmp, flags = 0;
+ int dotclock;
tmp = I915_READ(crt->adpa_reg);
@@ -103,6 +104,13 @@ static void intel_crt_get_config(struct intel_encoder *encoder,
flags |= DRM_MODE_FLAG_NVSYNC;
pipe_config->adjusted_mode.flags |= flags;
+
+ dotclock = pipe_config->port_clock;
+
+ if (HAS_PCH_SPLIT(dev_priv->dev))
+ ironlake_check_encoder_dotclock(pipe_config, dotclock);
+
+ pipe_config->adjusted_mode.clock = dotclock;
}
/* Note: The caller is required to filter out dpms modes not supported by the
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 4f07292..31478b7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5047,6 +5047,8 @@ static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
DPLL_PORTB_READY_MASK);
}
+ i9xx_crtc_clock_get(crtc, pipe_config);
+
return true;
}
@@ -6007,6 +6009,8 @@ static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
pipe_config->pixel_multiplier =
((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
>> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
+
+ ironlake_crtc_clock_get(crtc, pipe_config);
} else {
pipe_config->pixel_multiplier = 1;
}
@@ -7416,7 +7420,12 @@ static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
i9xx_clock(refclk, &clock);
}
- pipe_config->adjusted_mode.clock = clock.dot;
+ /*
+ * This value includes pixel_multiplier. We will use
+ * port_clock to compute adjusted_mode.clock in the
+ * encoder's get_config() function.
+ */
+ pipe_config->port_clock = clock.dot;
}
int intel_dotclock_calculate(int link_freq,
@@ -7444,6 +7453,9 @@ static void ironlake_crtc_clock_get(struct intel_crtc *crtc,
struct drm_device *dev = crtc->base.dev;
int link_freq;
+ /* read out port_clock from the DPLL */
+ i9xx_crtc_clock_get(crtc, pipe_config);
+
/*
* We need to get the FDI or DP link clock here to derive
* the M/N dividers.
@@ -7454,6 +7466,12 @@ static void ironlake_crtc_clock_get(struct intel_crtc *crtc,
*/
link_freq = intel_fdi_link_freq(dev) * 10000;
+ /*
+ * This value does not include pixel_multiplier.
+ * We will check that port_clock and adjusted_mode.clock
+ * agree once we know their relationship in the encoder's
+ * get_config() function.
+ */
pipe_config->adjusted_mode.clock =
intel_dotclock_calculate(link_freq, &pipe_config->fdi_m_n);
}
@@ -8867,9 +8885,6 @@ check_crtc_state(struct drm_device *dev)
encoder->get_config(encoder, &pipe_config);
}
- if (dev_priv->display.get_clock)
- dev_priv->display.get_clock(crtc, &pipe_config);
-
WARN(crtc->active != active,
"crtc active state doesn't match with hw state "
"(expected %i, found %i)\n", crtc->active, active);
@@ -8944,6 +8959,18 @@ intel_modeset_check_state(struct drm_device *dev)
check_shared_dpll_state(dev);
}
+void ironlake_check_encoder_dotclock(const struct intel_crtc_config *pipe_config,
+ int dotclock)
+{
+ /*
+ * FDI already provided one idea for the dotclock.
+ * Yell if the encoder disagrees.
+ */
+ WARN(!intel_fuzzy_clock_check(pipe_config->adjusted_mode.clock, dotclock),
+ "FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
+ pipe_config->adjusted_mode.clock, dotclock);
+}
+
static int __intel_set_mode(struct drm_crtc *crtc,
struct drm_display_mode *mode,
int x, int y, struct drm_framebuffer *fb)
@@ -9895,7 +9922,6 @@ static void intel_init_display(struct drm_device *dev)
dev_priv->display.update_plane = ironlake_update_plane;
} else if (HAS_PCH_SPLIT(dev)) {
dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
- dev_priv->display.get_clock = ironlake_crtc_clock_get;
dev_priv->display.crtc_mode_set = ironlake_crtc_mode_set;
dev_priv->display.crtc_enable = ironlake_crtc_enable;
dev_priv->display.crtc_disable = ironlake_crtc_disable;
@@ -9903,7 +9929,6 @@ static void intel_init_display(struct drm_device *dev)
dev_priv->display.update_plane = ironlake_update_plane;
} else if (IS_VALLEYVIEW(dev)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
- dev_priv->display.get_clock = i9xx_crtc_clock_get;
dev_priv->display.crtc_mode_set = i9xx_crtc_mode_set;
dev_priv->display.crtc_enable = valleyview_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
@@ -9911,7 +9936,6 @@ static void intel_init_display(struct drm_device *dev)
dev_priv->display.update_plane = i9xx_update_plane;
} else {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
- dev_priv->display.get_clock = i9xx_crtc_clock_get;
dev_priv->display.crtc_mode_set = i9xx_crtc_mode_set;
dev_priv->display.crtc_enable = i9xx_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
@@ -10525,15 +10549,6 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev)
pipe);
}
- list_for_each_entry(crtc, &dev->mode_config.crtc_list,
- base.head) {
- if (!crtc->active)
- continue;
- if (dev_priv->display.get_clock)
- dev_priv->display.get_clock(crtc,
- &crtc->config);
- }
-
list_for_each_entry(connector, &dev->mode_config.connector_list,
base.head) {
if (connector->get_hw_state(connector)) {
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index be0449b..509a9e4 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1372,6 +1372,7 @@ static void intel_dp_get_config(struct intel_encoder *encoder,
struct drm_i915_private *dev_priv = dev->dev_private;
enum port port = dp_to_dig_port(intel_dp)->port;
struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
+ int dotclock;
if ((port == PORT_A) || !HAS_PCH_CPT(dev)) {
tmp = I915_READ(intel_dp->output_reg);
@@ -1403,12 +1404,20 @@ static void intel_dp_get_config(struct intel_encoder *encoder,
intel_dp_get_m_n(crtc, pipe_config);
- if (dp_to_dig_port(intel_dp)->port == PORT_A) {
+ if (port == PORT_A) {
if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ)
pipe_config->port_clock = 162000;
else
pipe_config->port_clock = 270000;
}
+
+ dotclock = intel_dotclock_calculate(pipe_config->port_clock,
+ &pipe_config->dp_m_n);
+
+ if (HAS_PCH_SPLIT(dev_priv->dev) && port != PORT_A)
+ ironlake_check_encoder_dotclock(pipe_config, dotclock);
+
+ pipe_config->adjusted_mode.clock = dotclock;
}
static bool is_edp_psr(struct intel_dp *intel_dp)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 4cf8898..6e1204f 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -805,5 +805,7 @@ extern void intel_dp_get_m_n(struct intel_crtc *crtc,
struct intel_crtc_config *pipe_config);
extern int intel_dotclock_calculate(int link_freq,
const struct intel_link_m_n *m_n);
+extern void ironlake_check_encoder_dotclock(const struct intel_crtc_config *pipe_config,
+ int dotclock);
#endif /* __INTEL_DRV_H__ */
diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
index 406303b..92487ce 100644
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -153,6 +153,8 @@ static void intel_dvo_get_config(struct intel_encoder *encoder,
flags |= DRM_MODE_FLAG_NVSYNC;
pipe_config->adjusted_mode.flags |= flags;
+
+ pipe_config->adjusted_mode.clock = pipe_config->port_clock;
}
static void intel_disable_dvo(struct intel_encoder *encoder)
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 4148cc8..16daa72 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -713,6 +713,7 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder,
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
u32 tmp, flags = 0;
+ int dotclock;
tmp = I915_READ(intel_hdmi->hdmi_reg);
@@ -727,6 +728,16 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder,
flags |= DRM_MODE_FLAG_NVSYNC;
pipe_config->adjusted_mode.flags |= flags;
+
+ if ((tmp & SDVO_COLOR_FORMAT_MASK) == HDMI_COLOR_FORMAT_12bpc)
+ dotclock = pipe_config->port_clock * 2 / 3;
+ else
+ dotclock = pipe_config->port_clock;
+
+ if (HAS_PCH_SPLIT(dev_priv->dev))
+ ironlake_check_encoder_dotclock(pipe_config, dotclock);
+
+ pipe_config->adjusted_mode.clock = dotclock;
}
static void intel_enable_hdmi(struct intel_encoder *encoder)
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 831a5c0..05e5485 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -92,6 +92,7 @@ static void intel_lvds_get_config(struct intel_encoder *encoder,
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 lvds_reg, tmp, flags = 0;
+ int dotclock;
if (HAS_PCH_SPLIT(dev))
lvds_reg = PCH_LVDS;
@@ -116,6 +117,13 @@ static void intel_lvds_get_config(struct intel_encoder *encoder,
pipe_config->gmch_pfit.control |= tmp & PANEL_8TO6_DITHER_ENABLE;
}
+
+ dotclock = pipe_config->port_clock;
+
+ if (HAS_PCH_SPLIT(dev_priv->dev))
+ ironlake_check_encoder_dotclock(pipe_config, dotclock);
+
+ pipe_config->adjusted_mode.clock = dotclock;
}
/* The LVDS pin pair needs to be on before the DPLLs are enabled.
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 74042c6..7148fdd 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1319,6 +1319,7 @@ static void intel_sdvo_get_config(struct intel_encoder *encoder,
struct intel_sdvo *intel_sdvo = to_sdvo(encoder);
struct intel_sdvo_dtd dtd;
int encoder_pixel_multiplier = 0;
+ int dotclock;
u32 flags = 0, sdvox;
u8 val;
bool ret;
@@ -1357,6 +1358,13 @@ static void intel_sdvo_get_config(struct intel_encoder *encoder,
>> SDVO_PORT_MULTIPLY_SHIFT) + 1;
}
+ dotclock = pipe_config->port_clock / pipe_config->pixel_multiplier;
+
+ if (HAS_PCH_SPLIT(dev))
+ ironlake_check_encoder_dotclock(pipe_config, dotclock);
+
+ pipe_config->adjusted_mode.clock = dotclock;
+
/* Cross check the port pixel multiplier with the sdvo encoder state. */
if (intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_CLOCK_RATE_MULT,
&val, 1)) {
--
1.8.1.5
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