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drm/i915: Add HSW CRT output readout support

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Call intel_ddi_get_config() to get the pipe_bpp settings from
DDI.

The sync polarity settings from DDI are irrelevant for CRT
output, so override them with data from the ADPA register.

v2: Extract intel_crt_get_flags()

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=69691
Tested-by: Qingshuai Tian <qingshuai.tian@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-09-24 14:24:05 +03:00 committed by Daniel Vetter
parent f2335330ec
commit 6801c18c0a
3 changed files with 32 additions and 8 deletions
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34
drivers/gpu/drm/i915/intel_crt.c
View File

@ -83,13 +83,11 @@ static bool intel_crt_get_hw_state(struct intel_encoder *encoder,
return true;
}
static void intel_crt_get_config(struct intel_encoder *encoder,
struct intel_crtc_config *pipe_config)
static unsigned int intel_crt_get_flags(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);
@ -103,16 +101,37 @@ static void intel_crt_get_config(struct intel_encoder *encoder,
else
flags |= DRM_MODE_FLAG_NVSYNC;
pipe_config->adjusted_mode.flags |= flags;
return flags;
}
static void intel_crt_get_config(struct intel_encoder *encoder,
struct intel_crtc_config *pipe_config)
{
struct drm_device *dev = encoder->base.dev;
int dotclock;
pipe_config->adjusted_mode.flags |= intel_crt_get_flags(encoder);
dotclock = pipe_config->port_clock;
if (HAS_PCH_SPLIT(dev_priv->dev))
if (HAS_PCH_SPLIT(dev))
ironlake_check_encoder_dotclock(pipe_config, dotclock);
pipe_config->adjusted_mode.clock = dotclock;
}
static void hsw_crt_get_config(struct intel_encoder *encoder,
struct intel_crtc_config *pipe_config)
{
intel_ddi_get_config(encoder, pipe_config);
pipe_config->adjusted_mode.flags &= ~(DRM_MODE_FLAG_PHSYNC |
DRM_MODE_FLAG_NHSYNC |
DRM_MODE_FLAG_PVSYNC |
DRM_MODE_FLAG_NVSYNC);
pipe_config->adjusted_mode.flags |= intel_crt_get_flags(encoder);
}
/* Note: The caller is required to filter out dpms modes not supported by the
* platform. */
static void intel_crt_set_dpms(struct intel_encoder *encoder, int mode)
@ -804,7 +823,10 @@ void intel_crt_init(struct drm_device *dev)
crt->base.mode_set = intel_crt_mode_set;
crt->base.disable = intel_disable_crt;
crt->base.enable = intel_enable_crt;
crt->base.get_config = intel_crt_get_config;
if (IS_HASWELL(dev))
crt->base.get_config = hsw_crt_get_config;
else
crt->base.get_config = intel_crt_get_config;
if (I915_HAS_HOTPLUG(dev))
crt->base.hpd_pin = HPD_CRT;
if (HAS_DDI(dev))

4
drivers/gpu/drm/i915/intel_ddi.c
View File

@ -1269,8 +1269,8 @@ static void intel_ddi_hot_plug(struct intel_encoder *intel_encoder)
intel_dp_check_link_status(intel_dp);
}
static void intel_ddi_get_config(struct intel_encoder *encoder,
struct intel_crtc_config *pipe_config)
void intel_ddi_get_config(struct intel_encoder *encoder,
struct intel_crtc_config *pipe_config)
{
struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);

2
drivers/gpu/drm/i915/intel_drv.h
View File

@ -828,5 +828,7 @@ extern void ironlake_check_encoder_dotclock(const struct intel_crtc_config *pipe
extern bool intel_crtc_active(struct drm_crtc *crtc);
extern void i915_disable_vga_mem(struct drm_device *dev);
extern void intel_ddi_get_config(struct intel_encoder *encoder,
struct intel_crtc_config *pipe_config);
#endif /* __INTEL_DRV_H__ */