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drm/i915: Deobfuscate the render p-state obfuscation

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The ironlake render p-state support includes some rather odd variable
names. Clean them up in order to improve the readability of the code.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Matthew Garrett 2010-02-02 18:30:47 +00:00 committed by Eric Anholt
parent f97108d1d0
commit b5b72e891a
5 changed files with 15 additions and 13 deletions
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2
drivers/gpu/drm/i915/i915_drv.h
View File

@ -452,7 +452,7 @@ typedef struct drm_i915_private {
u32 savePIPEB_DATA_N1;
u32 savePIPEB_LINK_M1;
u32 savePIPEB_LINK_N1;
u32 saveRSTDBYCTL;
u32 saveMCHBAR_RENDER_STANDBY;
struct {
struct drm_mm gtt_space;

14
drivers/gpu/drm/i915/i915_irq.c
View File

@ -272,23 +272,23 @@ static void i915_hotplug_work_func(struct work_struct *work)
static void i915_handle_rps_change(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
u32 slow_up, slow_down, max_avg, min_avg;
u32 busy_up, busy_down, max_avg, min_avg;
u16 rgvswctl;
u8 new_delay = dev_priv->cur_delay;
I915_WRITE(MEMINTRSTS, I915_READ(MEMINTRSTS) & ~MEMINT_EVAL_CHG);
slow_up = I915_READ(RCPREVBSYTUPAVG);
slow_down = I915_READ(RCPREVBSYTDNAVG);
busy_up = I915_READ(RCPREVBSYTUPAVG);
busy_down = I915_READ(RCPREVBSYTDNAVG);
max_avg = I915_READ(RCBMAXAVG);
min_avg = I915_READ(RCBMINAVG);
/* Handle RCS change request from hw */
if (slow_up > max_avg) {
if (busy_up > max_avg) {
if (dev_priv->cur_delay != dev_priv->max_delay)
new_delay = dev_priv->cur_delay - 1;
if (new_delay < dev_priv->max_delay)
new_delay = dev_priv->max_delay;
} else if (slow_down < min_avg) {
} else if (busy_down < min_avg) {
if (dev_priv->cur_delay != dev_priv->min_delay)
new_delay = dev_priv->cur_delay + 1;
if (new_delay > dev_priv->min_delay)
@ -300,8 +300,8 @@ static void i915_handle_rps_change(struct drm_device *dev)
rgvswctl = I915_READ(MEMSWCTL);
if (rgvswctl & MEMCTL_CMD_STS) {
DRM_ERROR("gpu slow, RCS change rejected\n");
return; /* still slow with another command */
DRM_ERROR("gpu busy, RCS change rejected\n");
return; /* still busy with another command */
}
/* Program the new state */

2
drivers/gpu/drm/i915/i915_reg.h
View File

@ -907,7 +907,7 @@
#define RCBMINAVG 0x111a0
#define RCUPEI 0x111b0
#define RCDNEI 0x111b4
#define RSTDBYCTL 0x111b8
#define MCHBAR_RENDER_STANDBY 0x111b8
#define RCX_SW_EXIT (1<<23)
#define RSX_STATUS_MASK 0x00700000
#define VIDCTL 0x111c0

6
drivers/gpu/drm/i915/i915_suspend.c
View File

@ -682,7 +682,8 @@ void i915_restore_display(struct drm_device *dev)
I915_WRITE(PCH_PP_OFF_DELAYS, dev_priv->savePP_OFF_DELAYS);
I915_WRITE(PCH_PP_DIVISOR, dev_priv->savePP_DIVISOR);
I915_WRITE(PCH_PP_CONTROL, dev_priv->savePP_CONTROL);
I915_WRITE(RSTDBYCTL, dev_priv->saveRSTDBYCTL);
I915_WRITE(MCHBAR_RENDER_STANDBY,
dev_priv->saveMCHBAR_RENDER_STANDBY);
} else {
I915_WRITE(PFIT_PGM_RATIOS, dev_priv->savePFIT_PGM_RATIOS);
I915_WRITE(BLC_PWM_CTL, dev_priv->saveBLC_PWM_CTL);
@ -746,7 +747,8 @@ int i915_save_state(struct drm_device *dev)
dev_priv->saveGTIMR = I915_READ(GTIMR);
dev_priv->saveFDI_RXA_IMR = I915_READ(FDI_RXA_IMR);
dev_priv->saveFDI_RXB_IMR = I915_READ(FDI_RXB_IMR);
dev_priv->saveRSTDBYCTL = I915_READ(RSTDBYCTL);
dev_priv->saveMCHBAR_RENDER_STANDBY =
I915_READ(MCHBAR_RENDER_STANDBY);
} else {
dev_priv->saveIER = I915_READ(IER);
dev_priv->saveIMR = I915_READ(IMR);

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

@ -4770,8 +4770,8 @@ void intel_init_clock_gating(struct drm_device *dev)
if (obj_priv) {
I915_WRITE(PWRCTXA, obj_priv->gtt_offset | PWRCTX_EN);
I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) &
~RCX_SW_EXIT);
I915_WRITE(MCHBAR_RENDER_STANDBY,
I915_READ(MCHBAR_RENDER_STANDBY) & ~RCX_SW_EXIT);
}
}
}