This cleans up the mode set path a little further, making it easier to
extend for future platforms.
Signed-off-by: Jesse Barnes <jbar...@virtuousgeek.org>
---
drivers/gpu/drm/i915/intel_display.c | 62 ++++++++++++++++++++++------------
1 files changed, 40 insertions(+), 22 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 0e2dd57..b08089c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4840,6 +4840,40 @@ static void i9xx_adjust_sdvo_tv_clock(struct
drm_display_mode *adjusted_mode,
}
}
+static void i9xx_update_pll_dividers(struct drm_crtc *crtc,
+ intel_clock_t *clock,
+ intel_clock_t *reduced_clock)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ u32 fp, fp2;
+
+ if (IS_PINEVIEW(dev)) {
+ fp = (1 << clock->n) << 16 | clock->m1 << 8 | clock->m2;
+ if (reduced_clock)
+ fp2 = (1 << reduced_clock->n) << 16 |
+ reduced_clock->m1 << 8 | reduced_clock->m2;
+ } else {
+ fp = clock->n << 16 | clock->m1 << 8 | clock->m2;
+ if (reduced_clock)
+ fp2 = reduced_clock->n << 16 | reduced_clock->m1 << 8 |
+ reduced_clock->m2;
+ }
+
+ I915_WRITE(FP0(pipe), fp);
+
+ intel_crtc->lowfreq_avail = false;
+ if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
+ reduced_clock && i915_powersave) {
+ I915_WRITE(FP1(pipe), fp2);
+ intel_crtc->lowfreq_avail = true;
+ } else {
+ I915_WRITE(FP1(pipe), fp);
+ }
+}
+
static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
@@ -4853,7 +4887,7 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
int plane = intel_crtc->plane;
int refclk, num_connectors = 0;
intel_clock_t clock, reduced_clock;
- u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
+ u32 dpll, dspcntr, pipeconf;
bool ok, has_reduced_clock = false, is_sdvo = false, is_dvo = false;
bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
struct drm_mode_config *mode_config = &dev->mode_config;
@@ -4932,17 +4966,8 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
if (is_sdvo && is_tv)
i9xx_adjust_sdvo_tv_clock(adjusted_mode, &clock);
- if (IS_PINEVIEW(dev)) {
- fp = (1 << clock.n) << 16 | clock.m1 << 8 | clock.m2;
- if (has_reduced_clock)
- fp2 = (1 << reduced_clock.n) << 16 |
- reduced_clock.m1 << 8 | reduced_clock.m2;
- } else {
- fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
- if (has_reduced_clock)
- fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
- reduced_clock.m2;
- }
+ i9xx_update_pll_dividers(crtc, &clock, has_reduced_clock ?
+ &reduced_clock : NULL);
dpll = DPLL_VGA_MODE_DIS;
@@ -5042,7 +5067,6 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
drm_mode_debug_printmodeline(mode);
- I915_WRITE(FP0(pipe), fp);
I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
POSTING_READ(DPLL(pipe));
@@ -5129,17 +5153,11 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
I915_WRITE(DPLL(pipe), dpll);
}
- intel_crtc->lowfreq_avail = false;
- if (is_lvds && has_reduced_clock && i915_powersave) {
- I915_WRITE(FP1(pipe), fp2);
- intel_crtc->lowfreq_avail = true;
- if (HAS_PIPE_CXSR(dev)) {
+ if (HAS_PIPE_CXSR(dev)) {
+ if (intel_crtc->lowfreq_avail) {
DRM_DEBUG_KMS("enabling CxSR downclocking\n");
pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
- }
- } else {
- I915_WRITE(FP1(pipe), fp);
- if (HAS_PIPE_CXSR(dev)) {
+ } else {
DRM_DEBUG_KMS("disabling CxSR downclocking\n");
pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
}
--
1.7.4.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
