diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_runtime_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_runtime_pm.c | 149 |
1 files changed, 69 insertions, 80 deletions
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c index 6e54d978d9d4..d189a0012277 100644 --- a/drivers/gpu/drm/i915/intel_runtime_pm.c +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c @@ -89,6 +89,10 @@ intel_display_power_domain_str(enum intel_display_power_domain domain) return "TRANSCODER_C"; case POWER_DOMAIN_TRANSCODER_EDP: return "TRANSCODER_EDP"; + case POWER_DOMAIN_TRANSCODER_DSI_A: + return "TRANSCODER_DSI_A"; + case POWER_DOMAIN_TRANSCODER_DSI_C: + return "TRANSCODER_DSI_C"; case POWER_DOMAIN_PORT_DDI_A_LANES: return "PORT_DDI_A_LANES"; case POWER_DOMAIN_PORT_DDI_B_LANES: @@ -419,8 +423,11 @@ static void hsw_set_power_well(struct drm_i915_private *dev_priv, BXT_DISPLAY_POWERWELL_2_POWER_DOMAINS | \ BIT(POWER_DOMAIN_PIPE_A) | \ BIT(POWER_DOMAIN_TRANSCODER_EDP) | \ + BIT(POWER_DOMAIN_TRANSCODER_DSI_A) | \ + BIT(POWER_DOMAIN_TRANSCODER_DSI_C) | \ 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)) @@ -458,8 +465,6 @@ static void assert_can_enable_dc9(struct drm_i915_private *dev_priv) 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"); @@ -472,24 +477,6 @@ static void assert_can_disable_dc9(struct drm_i915_private *dev_priv) */ } -static void gen9_set_dc_state_debugmask(struct drm_i915_private *dev_priv) -{ - uint32_t val, mask; - - mask = DC_STATE_DEBUG_MASK_MEMORY_UP; - - if (IS_BROXTON(dev_priv)) - mask |= DC_STATE_DEBUG_MASK_CORES; - - /* The below bit doesn't need to be cleared ever afterwards */ - val = I915_READ(DC_STATE_DEBUG); - if ((val & mask) != mask) { - val |= mask; - 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) { @@ -538,12 +525,8 @@ static void gen9_set_dc_state(struct drm_i915_private *dev_priv, uint32_t 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 (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", @@ -606,18 +589,6 @@ static void assert_can_enable_dc5(struct drm_i915_private *dev_priv) 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); @@ -642,30 +613,6 @@ static void assert_can_enable_dc6(struct drm_i915_private *dev_priv) 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) || IS_KABYLAKE(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); @@ -678,8 +625,6 @@ void skl_enable_dc6(struct drm_i915_private *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); @@ -833,32 +778,25 @@ static bool gen9_dc_off_power_well_enabled(struct drm_i915_private *dev_priv, 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) || IS_KABYLAKE(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) || IS_KABYLAKE(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, @@ -2023,6 +1961,55 @@ sanitize_disable_power_well_option(const struct drm_i915_private *dev_priv, 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); \ @@ -2041,6 +2028,8 @@ int intel_power_domains_init(struct drm_i915_private *dev_priv) 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); @@ -2141,8 +2130,8 @@ static void skl_display_core_init(struct drm_i915_private *dev_priv, skl_init_cdclk(dev_priv); - if (dev_priv->csr.dmc_payload && intel_csr_load_program(dev_priv)) - gen9_set_dc_state_debugmask(dev_priv); + if (dev_priv->csr.dmc_payload) + intel_csr_load_program(dev_priv); } static void skl_display_core_uninit(struct drm_i915_private *dev_priv) |