bool intel_pipe_has_type (struct drm_crtc *crtc, int type);
static void intel_update_watermarks(struct drm_device *dev);
+static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule);
typedef struct {
/* given values */
intel_p2_t p2;
bool (* find_pll)(const intel_limit_t *, struct drm_crtc *,
int, int, intel_clock_t *);
+ bool (* find_reduced_pll)(const intel_limit_t *, struct drm_crtc *,
+ int, int, intel_clock_t *);
};
#define I8XX_DOT_MIN 25000
intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock);
static bool
+intel_find_best_reduced_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
+ int target, int refclk, intel_clock_t *best_clock);
+static bool
intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock);
static bool
.p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT,
.p2_slow = I8XX_P2_SLOW, .p2_fast = I8XX_P2_FAST },
.find_pll = intel_find_best_PLL,
+ .find_reduced_pll = intel_find_best_reduced_PLL,
};
static const intel_limit_t intel_limits_i8xx_lvds = {
.p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT,
.p2_slow = I8XX_P2_LVDS_SLOW, .p2_fast = I8XX_P2_LVDS_FAST },
.find_pll = intel_find_best_PLL,
+ .find_reduced_pll = intel_find_best_reduced_PLL,
};
static const intel_limit_t intel_limits_i9xx_sdvo = {
.p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT,
.p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST },
.find_pll = intel_find_best_PLL,
+ .find_reduced_pll = intel_find_best_reduced_PLL,
};
static const intel_limit_t intel_limits_i9xx_lvds = {
.p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT,
.p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_FAST },
.find_pll = intel_find_best_PLL,
+ .find_reduced_pll = intel_find_best_reduced_PLL,
};
/* below parameter and function is for G4X Chipset Family*/
.p2_fast = G4X_P2_SDVO_FAST
},
.find_pll = intel_g4x_find_best_PLL,
+ .find_reduced_pll = intel_g4x_find_best_PLL,
};
static const intel_limit_t intel_limits_g4x_hdmi = {
.p2_fast = G4X_P2_HDMI_DAC_FAST
},
.find_pll = intel_g4x_find_best_PLL,
+ .find_reduced_pll = intel_g4x_find_best_PLL,
};
static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
.p2_fast = G4X_P2_SINGLE_CHANNEL_LVDS_FAST
},
.find_pll = intel_g4x_find_best_PLL,
+ .find_reduced_pll = intel_g4x_find_best_PLL,
};
static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
.p2_fast = G4X_P2_DUAL_CHANNEL_LVDS_FAST
},
.find_pll = intel_g4x_find_best_PLL,
+ .find_reduced_pll = intel_g4x_find_best_PLL,
};
static const intel_limit_t intel_limits_g4x_display_port = {
.p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT,
.p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST },
.find_pll = intel_find_best_PLL,
+ .find_reduced_pll = intel_find_best_reduced_PLL,
};
static const intel_limit_t intel_limits_igd_lvds = {
.p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT,
.p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_SLOW },
.find_pll = intel_find_best_PLL,
+ .find_reduced_pll = intel_find_best_reduced_PLL,
};
static const intel_limit_t intel_limits_igdng_sdvo = {
memset (best_clock, 0, sizeof (*best_clock));
- for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
- for (clock.m2 = limit->m2.min; clock.m2 <= limit->m2.max; clock.m2++) {
- /* m1 is always 0 in IGD */
- if (clock.m2 >= clock.m1 && !IS_IGD(dev))
- break;
- for (clock.n = limit->n.min; clock.n <= limit->n.max;
- clock.n++) {
- for (clock.p1 = limit->p1.min;
- clock.p1 <= limit->p1.max; clock.p1++) {
+ for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
+ for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
+ clock.m1++) {
+ for (clock.m2 = limit->m2.min;
+ clock.m2 <= limit->m2.max; clock.m2++) {
+ /* m1 is always 0 in IGD */
+ if (clock.m2 >= clock.m1 && !IS_IGD(dev))
+ break;
+ for (clock.n = limit->n.min;
+ clock.n <= limit->n.max; clock.n++) {
int this_err;
intel_clock(dev, refclk, &clock);
return (err != target);
}
+
+static bool
+intel_find_best_reduced_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
+ int target, int refclk, intel_clock_t *best_clock)
+
+{
+ struct drm_device *dev = crtc->dev;
+ intel_clock_t clock;
+ int err = target;
+ bool found = false;
+
+ memcpy(&clock, best_clock, sizeof(intel_clock_t));
+
+ for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
+ for (clock.m2 = limit->m2.min; clock.m2 <= limit->m2.max; clock.m2++) {
+ /* m1 is always 0 in IGD */
+ if (clock.m2 >= clock.m1 && !IS_IGD(dev))
+ break;
+ for (clock.n = limit->n.min; clock.n <= limit->n.max;
+ clock.n++) {
+ int this_err;
+
+ intel_clock(dev, refclk, &clock);
+
+ if (!intel_PLL_is_valid(crtc, &clock))
+ continue;
+
+ this_err = abs(clock.dot - target);
+ if (this_err < err) {
+ *best_clock = clock;
+ err = this_err;
+ found = true;
+ }
+ }
+ }
+ }
+
+ return found;
+}
+
static bool
intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock)
max_n = limit->n.max;
/* based on hardware requriment prefer smaller n to precision */
for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
- /* based on hardware requirment prefere larger m1,m2, p1 */
+ /* based on hardware requirment prefere larger m1,m2 */
for (clock.m1 = limit->m1.max;
clock.m1 >= limit->m1.min; clock.m1--) {
for (clock.m2 = limit->m2.max;
memset(best_clock, 0, sizeof(*best_clock));
max_n = limit->n.max;
- /* based on hardware requriment prefer smaller n to precision */
- for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
- /* based on hardware requirment prefere larger m1,m2, p1 */
- for (clock.m1 = limit->m1.max;
- clock.m1 >= limit->m1.min; clock.m1--) {
- for (clock.m2 = limit->m2.max;
- clock.m2 >= limit->m2.min; clock.m2--) {
- for (clock.p1 = limit->p1.max;
- clock.p1 >= limit->p1.min; clock.p1--) {
+ for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
+ /* based on hardware requriment prefer smaller n to precision */
+ for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
+ /* based on hardware requirment prefere larger m1,m2 */
+ for (clock.m1 = limit->m1.max;
+ clock.m1 >= limit->m1.min; clock.m1--) {
+ for (clock.m2 = limit->m2.max;
+ clock.m2 >= limit->m2.min; clock.m2--) {
int this_err;
intel_clock(dev, refclk, &clock);
if (old_fb) {
intel_fb = to_intel_framebuffer(old_fb);
+ obj_priv = intel_fb->obj->driver_private;
i915_gem_object_unpin(intel_fb->obj);
}
+ intel_increase_pllclock(crtc, true);
+
mutex_unlock(&dev->struct_mutex);
if (!dev->primary->master)
return size;
}
+static void g4x_update_wm(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 fw_blc_self = I915_READ(FW_BLC_SELF);
+
+ if (i915_powersave)
+ fw_blc_self |= FW_BLC_SELF_EN;
+ else
+ fw_blc_self &= ~FW_BLC_SELF_EN;
+ I915_WRITE(FW_BLC_SELF, fw_blc_self);
+}
+
static void i965_update_wm(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
cwm = 2;
/* Calc sr entries for one plane configs */
- if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
+ if (HAS_FW_BLC(dev) && sr_hdisplay &&
+ (!planea_clock || !planeb_clock)) {
/* self-refresh has much higher latency */
const static int sr_latency_ns = 6000;
srwm = total_size - sr_entries;
if (srwm < 0)
srwm = 1;
- if (IS_I9XX(dev))
- I915_WRITE(FW_BLC_SELF, (srwm & 0x3f));
+ I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN | (srwm & 0x3f));
}
DRM_DEBUG("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
unsigned long planea_clock = 0, planeb_clock = 0, sr_clock = 0;
int enabled = 0, pixel_size = 0;
- if (DSPARB_HWCONTROL(dev))
- return;
-
/* Get the clock config from both planes */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
intel_crtc = to_intel_crtc(crtc);
else if (IS_IGD(dev))
igd_disable_cxsr(dev);
- if (IS_I965G(dev))
+ if (IS_G4X(dev))
+ g4x_update_wm(dev);
+ else if (IS_I965G(dev))
i965_update_wm(dev);
else if (IS_I9XX(dev) || IS_MOBILE(dev))
i9xx_update_wm(dev, planea_clock, planeb_clock, sr_hdisplay,
int dsppos_reg = (pipe == 0) ? DSPAPOS : DSPBPOS;
int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
int refclk, num_outputs = 0;
- intel_clock_t clock;
- u32 dpll = 0, fp = 0, dspcntr, pipeconf;
- bool ok, is_sdvo = false, is_dvo = false;
+ intel_clock_t clock, reduced_clock;
+ u32 dpll = 0, fp = 0, fp2 = 0, 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;
bool is_edp = false;
struct drm_mode_config *mode_config = &dev->mode_config;
return -EINVAL;
}
+ if (limit->find_reduced_pll && dev_priv->lvds_downclock_avail) {
+ memcpy(&reduced_clock, &clock, sizeof(intel_clock_t));
+ has_reduced_clock = limit->find_reduced_pll(limit, crtc,
+ (adjusted_mode->clock*3/4),
+ refclk,
+ &reduced_clock);
+ }
+
/* SDVO TV has fixed PLL values depend on its clock range,
this mirrors vbios setting. */
if (is_sdvo && is_tv) {
link_bw, &m_n);
}
- if (IS_IGD(dev))
+ if (IS_IGD(dev)) {
fp = (1 << clock.n) << 16 | clock.m1 << 8 | clock.m2;
- else
+ 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;
+ }
if (!IS_IGDNG(dev))
dpll = DPLL_VGA_MODE_DIS;
/* also FPA1 */
if (IS_IGDNG(dev))
dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
+ if (IS_G4X(dev) && has_reduced_clock)
+ dpll |= (1 << (reduced_clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
}
switch (clock.p2) {
case 5:
udelay(150);
}
+ if (is_lvds && has_reduced_clock && i915_powersave) {
+ I915_WRITE(fp_reg + 4, fp2);
+ intel_crtc->lowfreq_avail = true;
+ if (HAS_PIPE_CXSR(dev)) {
+ DRM_DEBUG("enabling CxSR downclocking\n");
+ pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
+ }
+ } else {
+ I915_WRITE(fp_reg + 4, fp);
+ intel_crtc->lowfreq_avail = false;
+ if (HAS_PIPE_CXSR(dev)) {
+ DRM_DEBUG("disabling CxSR downclocking\n");
+ pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
+ }
+ }
+
I915_WRITE(htot_reg, (adjusted_mode->crtc_hdisplay - 1) |
((adjusted_mode->crtc_htotal - 1) << 16));
I915_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) |
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ struct intel_framebuffer *intel_fb;
int pipe = intel_crtc->pipe;
uint32_t temp = 0;
uint32_t adder;
+ if (crtc->fb) {
+ intel_fb = to_intel_framebuffer(crtc->fb);
+ intel_mark_busy(dev, intel_fb->obj);
+ }
+
if (x < 0) {
temp |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
x = -x;
return mode;
}
+#define GPU_IDLE_TIMEOUT 500 /* ms */
+
+/* When this timer fires, we've been idle for awhile */
+static void intel_gpu_idle_timer(unsigned long arg)
+{
+ struct drm_device *dev = (struct drm_device *)arg;
+ drm_i915_private_t *dev_priv = dev->dev_private;
+
+ DRM_DEBUG("idle timer fired, downclocking\n");
+
+ dev_priv->busy = false;
+
+ schedule_work(&dev_priv->idle_work);
+}
+
+void intel_increase_renderclock(struct drm_device *dev, bool schedule)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+
+ if (IS_IGDNG(dev))
+ return;
+
+ if (!dev_priv->render_reclock_avail) {
+ DRM_ERROR("not reclocking render clock\n");
+ return;
+ }
+
+ /* Restore render clock frequency to original value */
+ if (IS_G4X(dev) || IS_I9XX(dev))
+ pci_write_config_word(dev->pdev, GCFGC, dev_priv->orig_clock);
+ else if (IS_I85X(dev))
+ pci_write_config_word(dev->pdev, HPLLCC, dev_priv->orig_clock);
+ DRM_DEBUG("increasing render clock frequency\n");
+
+ /* Schedule downclock */
+ if (schedule)
+ mod_timer(&dev_priv->idle_timer, jiffies +
+ msecs_to_jiffies(GPU_IDLE_TIMEOUT));
+}
+
+void intel_decrease_renderclock(struct drm_device *dev)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+
+ if (IS_IGDNG(dev))
+ return;
+
+ if (!dev_priv->render_reclock_avail) {
+ DRM_ERROR("not reclocking render clock\n");
+ return;
+ }
+
+ if (IS_G4X(dev)) {
+ u16 gcfgc;
+
+ /* Adjust render clock... */
+ pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
+
+ /* Down to minimum... */
+ gcfgc &= ~GM45_GC_RENDER_CLOCK_MASK;
+ gcfgc |= GM45_GC_RENDER_CLOCK_266_MHZ;
+
+ pci_write_config_word(dev->pdev, GCFGC, gcfgc);
+ } else if (IS_I965G(dev)) {
+ u16 gcfgc;
+
+ /* Adjust render clock... */
+ pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
+
+ /* Down to minimum... */
+ gcfgc &= ~I965_GC_RENDER_CLOCK_MASK;
+ gcfgc |= I965_GC_RENDER_CLOCK_267_MHZ;
+
+ pci_write_config_word(dev->pdev, GCFGC, gcfgc);
+ } else if (IS_I945G(dev) || IS_I945GM(dev)) {
+ u16 gcfgc;
+
+ /* Adjust render clock... */
+ pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
+
+ /* Down to minimum... */
+ gcfgc &= ~I945_GC_RENDER_CLOCK_MASK;
+ gcfgc |= I945_GC_RENDER_CLOCK_166_MHZ;
+
+ pci_write_config_word(dev->pdev, GCFGC, gcfgc);
+ } else if (IS_I915G(dev)) {
+ u16 gcfgc;
+
+ /* Adjust render clock... */
+ pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
+
+ /* Down to minimum... */
+ gcfgc &= ~I915_GC_RENDER_CLOCK_MASK;
+ gcfgc |= I915_GC_RENDER_CLOCK_166_MHZ;
+
+ pci_write_config_word(dev->pdev, GCFGC, gcfgc);
+ } else if (IS_I85X(dev)) {
+ u16 hpllcc;
+
+ /* Adjust render clock... */
+ pci_read_config_word(dev->pdev, HPLLCC, &hpllcc);
+
+ /* Up to maximum... */
+ hpllcc &= ~GC_CLOCK_CONTROL_MASK;
+ hpllcc |= GC_CLOCK_133_200;
+
+ pci_write_config_word(dev->pdev, HPLLCC, hpllcc);
+ }
+ DRM_DEBUG("decreasing render clock frequency\n");
+}
+
+/* Note that no increase function is needed for this - increase_renderclock()
+ * will also rewrite these bits
+ */
+void intel_decrease_displayclock(struct drm_device *dev)
+{
+ if (IS_IGDNG(dev))
+ return;
+
+ if (IS_I945G(dev) || IS_I945GM(dev) || IS_I915G(dev) ||
+ IS_I915GM(dev)) {
+ u16 gcfgc;
+
+ /* Adjust render clock... */
+ pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
+
+ /* Down to minimum... */
+ gcfgc &= ~0xf0;
+ gcfgc |= 0x80;
+
+ pci_write_config_word(dev->pdev, GCFGC, gcfgc);
+ }
+}
+
+#define CRTC_IDLE_TIMEOUT 1000 /* ms */
+
+static void intel_crtc_idle_timer(unsigned long arg)
+{
+ struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
+ struct drm_crtc *crtc = &intel_crtc->base;
+ drm_i915_private_t *dev_priv = crtc->dev->dev_private;
+
+ DRM_DEBUG("idle timer fired, downclocking\n");
+
+ intel_crtc->busy = false;
+
+ schedule_work(&dev_priv->idle_work);
+}
+
+static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule)
+{
+ struct drm_device *dev = crtc->dev;
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
+ int dpll = I915_READ(dpll_reg);
+
+ if (IS_IGDNG(dev))
+ return;
+
+ if (!dev_priv->lvds_downclock_avail)
+ return;
+
+ if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
+ DRM_DEBUG("upclocking LVDS\n");
+
+ /* Unlock panel regs */
+ I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16));
+
+ dpll &= ~DISPLAY_RATE_SELECT_FPA1;
+ I915_WRITE(dpll_reg, dpll);
+ dpll = I915_READ(dpll_reg);
+ intel_wait_for_vblank(dev);
+ dpll = I915_READ(dpll_reg);
+ if (dpll & DISPLAY_RATE_SELECT_FPA1)
+ DRM_DEBUG("failed to upclock LVDS!\n");
+
+ /* ...and lock them again */
+ I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
+ }
+
+ /* Schedule downclock */
+ if (schedule)
+ mod_timer(&intel_crtc->idle_timer, jiffies +
+ msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
+}
+
+static void intel_decrease_pllclock(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+ int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
+ int dpll = I915_READ(dpll_reg);
+
+ if (IS_IGDNG(dev))
+ return;
+
+ if (!dev_priv->lvds_downclock_avail)
+ return;
+
+ /*
+ * Since this is called by a timer, we should never get here in
+ * the manual case.
+ */
+ if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
+ DRM_DEBUG("downclocking LVDS\n");
+
+ /* Unlock panel regs */
+ I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16));
+
+ dpll |= DISPLAY_RATE_SELECT_FPA1;
+ I915_WRITE(dpll_reg, dpll);
+ dpll = I915_READ(dpll_reg);
+ intel_wait_for_vblank(dev);
+ dpll = I915_READ(dpll_reg);
+ if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
+ DRM_DEBUG("failed to downclock LVDS!\n");
+
+ /* ...and lock them again */
+ I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
+ }
+
+}
+
+/**
+ * intel_idle_update - adjust clocks for idleness
+ * @work: work struct
+ *
+ * Either the GPU or display (or both) went idle. Check the busy status
+ * here and adjust the CRTC and GPU clocks as necessary.
+ */
+static void intel_idle_update(struct work_struct *work)
+{
+ drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
+ idle_work);
+ struct drm_device *dev = dev_priv->dev;
+ struct drm_crtc *crtc;
+ struct intel_crtc *intel_crtc;
+
+ if (!i915_powersave)
+ return;
+
+ mutex_lock(&dev->struct_mutex);
+
+ /* GPU isn't processing, downclock it. */
+ if (!dev_priv->busy) {
+ intel_decrease_renderclock(dev);
+ intel_decrease_displayclock(dev);
+ }
+
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ /* Skip inactive CRTCs */
+ if (!crtc->fb)
+ continue;
+
+ intel_crtc = to_intel_crtc(crtc);
+ if (!intel_crtc->busy)
+ intel_decrease_pllclock(crtc);
+ }
+
+ mutex_unlock(&dev->struct_mutex);
+}
+
+/**
+ * intel_mark_busy - mark the GPU and possibly the display busy
+ * @dev: drm device
+ * @obj: object we're operating on
+ *
+ * Callers can use this function to indicate that the GPU is busy processing
+ * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
+ * buffer), we'll also mark the display as busy, so we know to increase its
+ * clock frequency.
+ */
+void intel_mark_busy(struct drm_device *dev, struct drm_gem_object *obj)
+{
+ drm_i915_private_t *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = NULL;
+ struct intel_framebuffer *intel_fb;
+ struct intel_crtc *intel_crtc;
+
+ dev_priv->busy = true;
+ intel_increase_renderclock(dev, true);
+
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ if (!crtc->fb)
+ continue;
+
+ intel_crtc = to_intel_crtc(crtc);
+ intel_fb = to_intel_framebuffer(crtc->fb);
+ if (intel_fb->obj == obj) {
+ if (!intel_crtc->busy) {
+ /* Non-busy -> busy, upclock */
+ intel_increase_pllclock(crtc, true);
+ intel_crtc->busy = true;
+ } else {
+ /* Busy -> busy, put off timer */
+ mod_timer(&intel_crtc->idle_timer, jiffies +
+ msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
+ }
+ }
+ }
+}
+
static void intel_crtc_destroy(struct drm_crtc *crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
intel_crtc->mode_set.crtc = &intel_crtc->base;
intel_crtc->mode_set.connectors = (struct drm_connector **)(intel_crtc + 1);
intel_crtc->mode_set.num_connectors = 0;
+ intel_crtc->busy = false;
+
+ setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
+ (unsigned long)intel_crtc);
if (i915_fbpercrtc) {
.fb_changed = intelfb_probe,
};
+void intel_init_clock_gating(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ /*
+ * Disable clock gating reported to work incorrectly according to the
+ * specs, but enable as much else as we can.
+ */
+ if (IS_G4X(dev)) {
+ uint32_t dspclk_gate;
+ I915_WRITE(RENCLK_GATE_D1, 0);
+ I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
+ GS_UNIT_CLOCK_GATE_DISABLE |
+ CL_UNIT_CLOCK_GATE_DISABLE);
+ I915_WRITE(RAMCLK_GATE_D, 0);
+ dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
+ OVRUNIT_CLOCK_GATE_DISABLE |
+ OVCUNIT_CLOCK_GATE_DISABLE;
+ if (IS_GM45(dev))
+ dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
+ I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
+ } else if (IS_I965GM(dev)) {
+ I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
+ I915_WRITE(RENCLK_GATE_D2, 0);
+ I915_WRITE(DSPCLK_GATE_D, 0);
+ I915_WRITE(RAMCLK_GATE_D, 0);
+ I915_WRITE16(DEUC, 0);
+ } else if (IS_I965G(dev)) {
+ I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
+ I965_RCC_CLOCK_GATE_DISABLE |
+ I965_RCPB_CLOCK_GATE_DISABLE |
+ I965_ISC_CLOCK_GATE_DISABLE |
+ I965_FBC_CLOCK_GATE_DISABLE);
+ I915_WRITE(RENCLK_GATE_D2, 0);
+ } else if (IS_I9XX(dev)) {
+ u32 dstate = I915_READ(D_STATE);
+
+ dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
+ DSTATE_DOT_CLOCK_GATING;
+ I915_WRITE(D_STATE, dstate);
+ } else if (IS_I855(dev) || IS_I865G(dev)) {
+ I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
+ } else if (IS_I830(dev)) {
+ I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
+ }
+}
+
void intel_modeset_init(struct drm_device *dev)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
int num_pipe;
int i;
DRM_DEBUG("%d display pipe%s available.\n",
num_pipe, num_pipe > 1 ? "s" : "");
+ if (IS_I85X(dev))
+ pci_read_config_word(dev->pdev, HPLLCC, &dev_priv->orig_clock);
+ else if (IS_I9XX(dev) || IS_G4X(dev))
+ pci_read_config_word(dev->pdev, GCFGC, &dev_priv->orig_clock);
+
for (i = 0; i < num_pipe; i++) {
intel_crtc_init(dev, i);
}
intel_setup_outputs(dev);
+
+ intel_init_clock_gating(dev);
+
+ INIT_WORK(&dev_priv->idle_work, intel_idle_update);
+ setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
+ (unsigned long)dev);
}
void intel_modeset_cleanup(struct drm_device *dev)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc;
+ struct intel_crtc *intel_crtc;
+
+ mutex_lock(&dev->struct_mutex);
+
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ /* Skip inactive CRTCs */
+ if (!crtc->fb)
+ continue;
+
+ intel_crtc = to_intel_crtc(crtc);
+ intel_increase_pllclock(crtc, false);
+ del_timer_sync(&intel_crtc->idle_timer);
+ }
+
+ intel_increase_renderclock(dev, false);
+ del_timer_sync(&dev_priv->idle_timer);
+
+ mutex_unlock(&dev->struct_mutex);
+
drm_mode_config_cleanup(dev);
}
git://bbs.cooldavid.org / net-next-2.6.git / blobdiff