drm/i915: add power monitoring support
Add power monitoring support to the i915 driver for use by the IPS
driver. Export the available power info to the IPS driver through a few
new inter-driver hooks. When used together, the IPS driver and this
patch can significantly increase graphics performance on Ironlake class
chips.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
[anholt: Fixed 32-bit compile. stupid obfuscating div_u64()]
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 6bc0fc08..91b3a1c 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -619,6 +619,18 @@
u8 cur_delay;
u8 min_delay;
u8 max_delay;
+ u8 fmax;
+ u8 fstart;
+
+ u64 last_count1;
+ unsigned long last_time1;
+ u64 last_count2;
+ struct timespec last_time2;
+ unsigned long gfx_power;
+ int c_m;
+ int r_t;
+ u8 corr;
+ spinlock_t *mchdev_lock;
enum no_fbc_reason no_fbc_reason;
@@ -802,6 +814,11 @@
struct drm_clip_rect *boxes,
int i, int DR1, int DR4);
extern int i965_reset(struct drm_device *dev, u8 flags);
+extern unsigned long i915_chipset_val(struct drm_i915_private *dev_priv);
+extern unsigned long i915_mch_val(struct drm_i915_private *dev_priv);
+extern unsigned long i915_gfx_val(struct drm_i915_private *dev_priv);
+extern void i915_update_gfx_val(struct drm_i915_private *dev_priv);
+
/* i915_irq.c */
void i915_hangcheck_elapsed(unsigned long data);
@@ -1005,7 +1022,7 @@
extern void intel_disable_fbc(struct drm_device *dev);
extern void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval);
extern bool intel_fbc_enabled(struct drm_device *dev);
-
+extern bool ironlake_set_drps(struct drm_device *dev, u8 val);
extern void intel_detect_pch (struct drm_device *dev);
extern int intel_trans_dp_port_sel (struct drm_crtc *crtc);
@@ -1030,6 +1047,7 @@
#define I915_WRITE64(reg, val) writeq(val, dev_priv->regs + (reg))
#define I915_READ64(reg) readq(dev_priv->regs + (reg))
#define POSTING_READ(reg) (void)I915_READ(reg)
+#define POSTING_READ16(reg) (void)I915_READ16(reg)
#define I915_VERBOSE 0