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drm/i915: Convert DIP port switch cases to a simple macro 

We have a couple of switch cases to compute the port value for the
VIDEO_DIP_CTL register. Replace them with a simple macro.

We do lose a few BUG() calls, but many people may consider that
an improvement.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2014-01-23 23:15:34 +02:00 committed by Daniel Vetter
parent 4d10cc0f86
commit 822cdc5293
2 changed files with 3 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/i915/i915_reg.h
View File

@ -2347,9 +2347,7 @@
#define VIDEO_DIP_CTL 0x61170
/* Pre HSW: */
#define VIDEO_DIP_ENABLE (1 << 31)
#define VIDEO_DIP_PORT_B (1 << 29)
#define VIDEO_DIP_PORT_C (2 << 29)
#define VIDEO_DIP_PORT_D (3 << 29)
#define VIDEO_DIP_PORT(port) ((port) << 29)
#define VIDEO_DIP_PORT_MASK (3 << 29)
#define VIDEO_DIP_ENABLE_GCP (1 << 25)
#define VIDEO_DIP_ENABLE_AVI (1 << 21)

31
drivers/gpu/drm/i915/intel_hdmi.c
View File

@ -425,7 +425,7 @@ static void g4x_set_infoframes(struct drm_encoder *encoder,
struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
u32 reg = VIDEO_DIP_CTL;
u32 val = I915_READ(reg);
u32 port;
u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
assert_hdmi_port_disabled(intel_hdmi);
@ -449,18 +449,6 @@ static void g4x_set_infoframes(struct drm_encoder *encoder,
return;
}
switch (intel_dig_port->port) {
case PORT_B:
port = VIDEO_DIP_PORT_B;
break;
case PORT_C:
port = VIDEO_DIP_PORT_C;
break;
default:
BUG();
return;
}
if (port != (val & VIDEO_DIP_PORT_MASK)) {
if (val & VIDEO_DIP_ENABLE) {
val &= ~VIDEO_DIP_ENABLE;
@ -491,7 +479,7 @@ static void ibx_set_infoframes(struct drm_encoder *encoder,
struct intel_hdmi *intel_hdmi = &intel_dig_port->hdmi;
u32 reg = TVIDEO_DIP_CTL(intel_crtc->pipe);
u32 val = I915_READ(reg);
u32 port;
u32 port = VIDEO_DIP_PORT(intel_dig_port->port);
assert_hdmi_port_disabled(intel_hdmi);
@ -507,21 +495,6 @@ static void ibx_set_infoframes(struct drm_encoder *encoder,
return;
}
switch (intel_dig_port->port) {
case PORT_B:
port = VIDEO_DIP_PORT_B;
break;
case PORT_C:
port = VIDEO_DIP_PORT_C;
break;
case PORT_D:
port = VIDEO_DIP_PORT_D;
break;
default:
BUG();
return;
}
if (port != (val & VIDEO_DIP_PORT_MASK)) {
if (val & VIDEO_DIP_ENABLE) {
val &= ~VIDEO_DIP_ENABLE;