1 << PIPE_C | 1 << PIPE_B);
}
+static void hsw_power_well_pre_disable(struct drm_i915_private *dev_priv)
+{
+ if (IS_BROADWELL(dev_priv))
+ gen8_irq_power_well_pre_disable(dev_priv,
+ 1 << PIPE_C | 1 << PIPE_B);
+}
+
static void skl_power_well_post_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
}
}
+static void skl_power_well_pre_disable(struct drm_i915_private *dev_priv,
+ struct i915_power_well *power_well)
+{
+ if (power_well->data == SKL_DISP_PW_2)
+ gen8_irq_power_well_pre_disable(dev_priv,
+ 1 << PIPE_C | 1 << PIPE_B);
+}
+
static void hsw_set_power_well(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well, bool enable)
{
} else {
if (enable_requested) {
+ hsw_power_well_pre_disable(dev_priv);
I915_WRITE(HSW_PWR_WELL_DRIVER, 0);
POSTING_READ(HSW_PWR_WELL_DRIVER);
DRM_DEBUG_KMS("Requesting to disable the power well\n");
BIT(POWER_DOMAIN_TRANSCODER_EDP) | \
BIT(POWER_DOMAIN_PIPE_A_PANEL_FITTER) | \
BIT(POWER_DOMAIN_PORT_DDI_A_LANES) | \
+ BIT(POWER_DOMAIN_PORT_DSI) | \
BIT(POWER_DOMAIN_AUX_A) | \
BIT(POWER_DOMAIN_PLLS) | \
BIT(POWER_DOMAIN_INIT))
static void assert_can_disable_dc9(struct drm_i915_private *dev_priv)
{
WARN(intel_irqs_enabled(dev_priv), "Interrupts not disabled yet.\n");
- WARN(!(I915_READ(DC_STATE_EN) & DC_STATE_EN_DC9),
- "DC9 already programmed to be disabled.\n");
WARN(I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC5,
"DC5 still not disabled.\n");
*/
}
-static void gen9_set_dc_state_debugmask_memory_up(
- struct drm_i915_private *dev_priv)
-{
- uint32_t val;
-
- /* The below bit doesn't need to be cleared ever afterwards */
- val = I915_READ(DC_STATE_DEBUG);
- if (!(val & DC_STATE_DEBUG_MASK_MEMORY_UP)) {
- val |= DC_STATE_DEBUG_MASK_MEMORY_UP;
- I915_WRITE(DC_STATE_DEBUG, val);
- POSTING_READ(DC_STATE_DEBUG);
- }
-}
-
static void gen9_write_dc_state(struct drm_i915_private *dev_priv,
u32 state)
{
else
mask |= DC_STATE_EN_UPTO_DC6;
- WARN_ON_ONCE(state & ~mask);
-
- if (i915.enable_dc == 0)
- state = DC_STATE_DISABLE;
- else if (i915.enable_dc == 1 && state > DC_STATE_EN_UPTO_DC5)
- state = DC_STATE_EN_UPTO_DC5;
-
- if (state & DC_STATE_EN_UPTO_DC5_DC6_MASK)
- gen9_set_dc_state_debugmask_memory_up(dev_priv);
+ if (WARN_ON_ONCE(state & ~dev_priv->csr.allowed_dc_mask))
+ state &= dev_priv->csr.allowed_dc_mask;
val = I915_READ(DC_STATE_EN);
DRM_DEBUG_KMS("Setting DC state from %02x to %02x\n",
bool pg2_enabled = intel_display_power_well_is_enabled(dev_priv,
SKL_DISP_PW_2);
- WARN_ONCE(!IS_SKYLAKE(dev), "Platform doesn't support DC5.\n");
+ WARN_ONCE(!IS_SKYLAKE(dev) && !IS_KABYLAKE(dev),
+ "Platform doesn't support DC5.\n");
WARN_ONCE(!HAS_RUNTIME_PM(dev), "Runtime PM not enabled.\n");
WARN_ONCE(pg2_enabled, "PG2 not disabled to enable DC5.\n");
assert_csr_loaded(dev_priv);
}
-static void assert_can_disable_dc5(struct drm_i915_private *dev_priv)
-{
- /*
- * During initialization, the firmware may not be loaded yet.
- * We still want to make sure that the DC enabling flag is cleared.
- */
- if (dev_priv->power_domains.initializing)
- return;
-
- assert_rpm_wakelock_held(dev_priv);
-}
-
static void gen9_enable_dc5(struct drm_i915_private *dev_priv)
{
assert_can_enable_dc5(dev_priv);
{
struct drm_device *dev = dev_priv->dev;
- WARN_ONCE(!IS_SKYLAKE(dev), "Platform doesn't support DC6.\n");
+ WARN_ONCE(!IS_SKYLAKE(dev) && !IS_KABYLAKE(dev),
+ "Platform doesn't support DC6.\n");
WARN_ONCE(!HAS_RUNTIME_PM(dev), "Runtime PM not enabled.\n");
WARN_ONCE(I915_READ(UTIL_PIN_CTL) & UTIL_PIN_ENABLE,
"Backlight is not disabled.\n");
assert_csr_loaded(dev_priv);
}
-static void assert_can_disable_dc6(struct drm_i915_private *dev_priv)
-{
- /*
- * During initialization, the firmware may not be loaded yet.
- * We still want to make sure that the DC enabling flag is cleared.
- */
- if (dev_priv->power_domains.initializing)
- return;
-
- WARN_ONCE(!(I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC6),
- "DC6 already programmed to be disabled.\n");
-}
-
-static void gen9_disable_dc5_dc6(struct drm_i915_private *dev_priv)
-{
- assert_can_disable_dc5(dev_priv);
-
- if (IS_SKYLAKE(dev_priv) && i915.enable_dc != 0 && i915.enable_dc != 1)
- assert_can_disable_dc6(dev_priv);
-
- gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
-}
-
void skl_enable_dc6(struct drm_i915_private *dev_priv)
{
assert_can_enable_dc6(dev_priv);
void skl_disable_dc6(struct drm_i915_private *dev_priv)
{
- assert_can_disable_dc6(dev_priv);
-
DRM_DEBUG_KMS("Disabling DC6\n");
gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
static void skl_set_power_well(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well, bool enable)
{
- struct drm_device *dev = dev_priv->dev;
uint32_t tmp, fuse_status;
uint32_t req_mask, state_mask;
bool is_enabled, enable_requested, check_fuse_status = false;
state_mask = SKL_POWER_WELL_STATE(power_well->data);
is_enabled = tmp & state_mask;
+ if (!enable && enable_requested)
+ skl_power_well_pre_disable(dev_priv, power_well);
+
if (enable) {
if (!enable_requested) {
WARN((tmp & state_mask) &&
!I915_READ(HSW_PWR_WELL_BIOS),
"Invalid for power well status to be enabled, unless done by the BIOS, \
when request is to disable!\n");
- if (power_well->data == SKL_DISP_PW_2) {
- /*
- * DDI buffer programming unnecessary during
- * driver-load/resume as it's already done
- * during modeset initialization then. It's
- * also invalid here as encoder list is still
- * uninitialized.
- */
- if (!dev_priv->power_domains.initializing)
- intel_prepare_ddi(dev);
- }
I915_WRITE(HSW_PWR_WELL_DRIVER, tmp | req_mask);
}
static void gen9_dc_off_power_well_enable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
- gen9_disable_dc5_dc6(dev_priv);
+ gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
}
static void gen9_dc_off_power_well_disable(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
- if (IS_SKYLAKE(dev_priv) && i915.enable_dc != 0 && i915.enable_dc != 1)
+ if (dev_priv->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC6)
skl_enable_dc6(dev_priv);
- else
+ else if (dev_priv->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC5)
gen9_enable_dc5(dev_priv);
}
static void gen9_dc_off_power_well_sync_hw(struct drm_i915_private *dev_priv,
struct i915_power_well *power_well)
{
- if (power_well->count > 0) {
- gen9_set_dc_state(dev_priv, DC_STATE_DISABLE);
- } else {
- if (IS_SKYLAKE(dev_priv) && i915.enable_dc != 0 &&
- i915.enable_dc != 1)
- gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
- else
- gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC5);
- }
+ if (power_well->count > 0)
+ gen9_dc_off_power_well_enable(dev_priv, power_well);
+ else
+ gen9_dc_off_power_well_disable(dev_priv, power_well);
}
static void i9xx_always_on_power_well_noop(struct drm_i915_private *dev_priv,
valleyview_disable_display_irqs(dev_priv);
spin_unlock_irq(&dev_priv->irq_lock);
+ /* make sure we're done processing display irqs */
+ synchronize_irq(dev_priv->dev->irq);
+
vlv_power_sequencer_reset(dev_priv);
}
{
struct i915_power_well *well;
- if (!IS_SKYLAKE(dev_priv))
+ if (!(IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)))
return;
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
{
struct i915_power_well *well;
- if (!IS_SKYLAKE(dev_priv))
+ if (!(IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)))
return;
well = lookup_power_well(dev_priv, SKL_DISP_PW_1);
return 1;
}
+static uint32_t get_allowed_dc_mask(const struct drm_i915_private *dev_priv,
+ int enable_dc)
+{
+ uint32_t mask;
+ int requested_dc;
+ int max_dc;
+
+ if (IS_SKYLAKE(dev_priv) || IS_KABYLAKE(dev_priv)) {
+ max_dc = 2;
+ mask = 0;
+ } else if (IS_BROXTON(dev_priv)) {
+ max_dc = 1;
+ /*
+ * DC9 has a separate HW flow from the rest of the DC states,
+ * not depending on the DMC firmware. It's needed by system
+ * suspend/resume, so allow it unconditionally.
+ */
+ mask = DC_STATE_EN_DC9;
+ } else {
+ max_dc = 0;
+ mask = 0;
+ }
+
+ if (!i915.disable_power_well)
+ max_dc = 0;
+
+ if (enable_dc >= 0 && enable_dc <= max_dc) {
+ requested_dc = enable_dc;
+ } else if (enable_dc == -1) {
+ requested_dc = max_dc;
+ } else if (enable_dc > max_dc && enable_dc <= 2) {
+ DRM_DEBUG_KMS("Adjusting requested max DC state (%d->%d)\n",
+ enable_dc, max_dc);
+ requested_dc = max_dc;
+ } else {
+ DRM_ERROR("Unexpected value for enable_dc (%d)\n", enable_dc);
+ requested_dc = max_dc;
+ }
+
+ if (requested_dc > 1)
+ mask |= DC_STATE_EN_UPTO_DC6;
+ if (requested_dc > 0)
+ mask |= DC_STATE_EN_UPTO_DC5;
+
+ DRM_DEBUG_KMS("Allowed DC state mask %02x\n", mask);
+
+ return mask;
+}
+
#define set_power_wells(power_domains, __power_wells) ({ \
(power_domains)->power_wells = (__power_wells); \
(power_domains)->power_well_count = ARRAY_SIZE(__power_wells); \
i915.disable_power_well = sanitize_disable_power_well_option(dev_priv,
i915.disable_power_well);
+ dev_priv->csr.allowed_dc_mask = get_allowed_dc_mask(dev_priv,
+ i915.enable_dc);
BUILD_BUG_ON(POWER_DOMAIN_NUM > 31);
projects / cascardo / linux.git / blobdiff