diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_irq.c | 95 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 20 |
2 files changed, 112 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 64d5e10a4de8..40e563eb3a1f 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -115,6 +115,13 @@ static const u32 hpd_bxt[HPD_NUM_PINS] = { [HPD_PORT_C] = BXT_DE_PORT_HP_DDIC }; +static const u32 hpd_tc_gen11[HPD_NUM_PINS] = { + [HPD_PORT_C] = GEN11_TC1_HOTPLUG, + [HPD_PORT_D] = GEN11_TC2_HOTPLUG, + [HPD_PORT_E] = GEN11_TC3_HOTPLUG, + [HPD_PORT_F] = GEN11_TC4_HOTPLUG +}; + /* IIR can theoretically queue up two events. Be paranoid. */ #define GEN8_IRQ_RESET_NDX(type, which) do { \ I915_WRITE(GEN8_##type##_IMR(which), 0xffffffff); \ @@ -1549,6 +1556,22 @@ static void gen8_gt_irq_handler(struct drm_i915_private *i915, } } +static bool gen11_port_hotplug_long_detect(enum port port, u32 val) +{ + switch (port) { + case PORT_C: + return val & GEN11_HOTPLUG_CTL_LONG_DETECT(PORT_TC1); + case PORT_D: + return val & GEN11_HOTPLUG_CTL_LONG_DETECT(PORT_TC2); + case PORT_E: + return val & GEN11_HOTPLUG_CTL_LONG_DETECT(PORT_TC3); + case PORT_F: + return val & GEN11_HOTPLUG_CTL_LONG_DETECT(PORT_TC4); + default: + return false; + } +} + static bool bxt_port_hotplug_long_detect(enum port port, u32 val) { switch (port) { @@ -2598,6 +2621,25 @@ static void bxt_hpd_irq_handler(struct drm_i915_private *dev_priv, intel_hpd_irq_handler(dev_priv, pin_mask, long_mask); } +static void gen11_hpd_irq_handler(struct drm_i915_private *dev_priv, u32 iir) +{ + u32 pin_mask = 0, long_mask = 0; + u32 trigger_tc, dig_hotplug_reg; + + trigger_tc = iir & GEN11_DE_TC_HOTPLUG_MASK; + if (trigger_tc) { + dig_hotplug_reg = I915_READ(GEN11_TC_HOTPLUG_CTL); + I915_WRITE(GEN11_TC_HOTPLUG_CTL, dig_hotplug_reg); + + intel_get_hpd_pins(dev_priv, &pin_mask, &long_mask, trigger_tc, + dig_hotplug_reg, hpd_tc_gen11, + gen11_port_hotplug_long_detect); + intel_hpd_irq_handler(dev_priv, pin_mask, long_mask); + } else { + DRM_ERROR("Unexpected DE HPD interrupt 0x%08x\n", iir); + } +} + static irqreturn_t gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl) { @@ -2633,6 +2675,17 @@ gen8_de_irq_handler(struct drm_i915_private *dev_priv, u32 master_ctl) DRM_ERROR("The master control interrupt lied (DE MISC)!\n"); } + if (INTEL_GEN(dev_priv) >= 11 && (master_ctl & GEN11_DE_HPD_IRQ)) { + iir = I915_READ(GEN11_DE_HPD_IIR); + if (iir) { + I915_WRITE(GEN11_DE_HPD_IIR, iir); + ret = IRQ_HANDLED; + gen11_hpd_irq_handler(dev_priv, iir); + } else { + DRM_ERROR("The master control interrupt lied, (DE HPD)!\n"); + } + } + if (master_ctl & GEN8_DE_PORT_IRQ) { iir = I915_READ(GEN8_DE_PORT_IIR); if (iir) { @@ -3513,6 +3566,7 @@ static void gen11_irq_reset(struct drm_device *dev) GEN3_IRQ_RESET(GEN8_DE_PORT_); GEN3_IRQ_RESET(GEN8_DE_MISC_); + GEN3_IRQ_RESET(GEN11_DE_HPD_); GEN3_IRQ_RESET(GEN11_GU_MISC_); GEN3_IRQ_RESET(GEN8_PCU_); } @@ -3631,6 +3685,34 @@ static void ibx_hpd_irq_setup(struct drm_i915_private *dev_priv) ibx_hpd_detection_setup(dev_priv); } +static void gen11_hpd_detection_setup(struct drm_i915_private *dev_priv) +{ + u32 hotplug; + + hotplug = I915_READ(GEN11_TC_HOTPLUG_CTL); + hotplug |= GEN11_HOTPLUG_CTL_ENABLE(PORT_TC1) | + GEN11_HOTPLUG_CTL_ENABLE(PORT_TC2) | + GEN11_HOTPLUG_CTL_ENABLE(PORT_TC3) | + GEN11_HOTPLUG_CTL_ENABLE(PORT_TC4); + I915_WRITE(GEN11_TC_HOTPLUG_CTL, hotplug); +} + +static void gen11_hpd_irq_setup(struct drm_i915_private *dev_priv) +{ + u32 hotplug_irqs, enabled_irqs; + u32 val; + + enabled_irqs = intel_hpd_enabled_irqs(dev_priv, hpd_tc_gen11); + hotplug_irqs = GEN11_DE_TC_HOTPLUG_MASK; + + val = I915_READ(GEN11_DE_HPD_IMR); + val &= ~hotplug_irqs; + I915_WRITE(GEN11_DE_HPD_IMR, val); + POSTING_READ(GEN11_DE_HPD_IMR); + + gen11_hpd_detection_setup(dev_priv); +} + static void spt_hpd_detection_setup(struct drm_i915_private *dev_priv) { u32 val, hotplug; @@ -4004,10 +4086,17 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv) GEN3_IRQ_INIT(GEN8_DE_PORT_, ~de_port_masked, de_port_enables); GEN3_IRQ_INIT(GEN8_DE_MISC_, ~de_misc_masked, de_misc_masked); - if (IS_GEN9_LP(dev_priv)) + if (INTEL_GEN(dev_priv) >= 11) { + u32 de_hpd_masked = 0; + u32 de_hpd_enables = GEN11_DE_TC_HOTPLUG_MASK; + + GEN3_IRQ_INIT(GEN11_DE_HPD_, ~de_hpd_masked, de_hpd_enables); + gen11_hpd_detection_setup(dev_priv); + } else if (IS_GEN9_LP(dev_priv)) { bxt_hpd_detection_setup(dev_priv); - else if (IS_BROADWELL(dev_priv)) + } else if (IS_BROADWELL(dev_priv)) { ilk_hpd_detection_setup(dev_priv); + } } static int gen8_irq_postinstall(struct drm_device *dev) @@ -4529,7 +4618,7 @@ void intel_irq_init(struct drm_i915_private *dev_priv) dev->driver->irq_uninstall = gen11_irq_reset; dev->driver->enable_vblank = gen8_enable_vblank; dev->driver->disable_vblank = gen8_disable_vblank; - dev_priv->display.hpd_irq_setup = spt_hpd_irq_setup; + dev_priv->display.hpd_irq_setup = gen11_hpd_irq_setup; } else if (INTEL_GEN(dev_priv) >= 8) { dev->driver->irq_handler = gen8_irq_handler; dev->driver->irq_preinstall = gen8_irq_reset; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index aed5ef9a95cb..21692228cb81 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7079,11 +7079,31 @@ enum { #define GEN11_AUDIO_CODEC_IRQ (1 << 24) #define GEN11_DE_PCH_IRQ (1 << 23) #define GEN11_DE_MISC_IRQ (1 << 22) +#define GEN11_DE_HPD_IRQ (1 << 21) #define GEN11_DE_PORT_IRQ (1 << 20) #define GEN11_DE_PIPE_C (1 << 18) #define GEN11_DE_PIPE_B (1 << 17) #define GEN11_DE_PIPE_A (1 << 16) +#define GEN11_DE_HPD_ISR _MMIO(0x44470) +#define GEN11_DE_HPD_IMR _MMIO(0x44474) +#define GEN11_DE_HPD_IIR _MMIO(0x44478) +#define GEN11_DE_HPD_IER _MMIO(0x4447c) +#define GEN11_TC4_HOTPLUG (1 << 19) +#define GEN11_TC3_HOTPLUG (1 << 18) +#define GEN11_TC2_HOTPLUG (1 << 17) +#define GEN11_TC1_HOTPLUG (1 << 16) +#define GEN11_DE_TC_HOTPLUG_MASK (GEN11_TC4_HOTPLUG | \ + GEN11_TC3_HOTPLUG | \ + GEN11_TC2_HOTPLUG | \ + GEN11_TC1_HOTPLUG) + +#define GEN11_TC_HOTPLUG_CTL _MMIO(0x44038) +#define GEN11_HOTPLUG_CTL_ENABLE(tc_port) (8 << (tc_port) * 4) +#define GEN11_HOTPLUG_CTL_LONG_DETECT(tc_port) (2 << (tc_port) * 4) +#define GEN11_HOTPLUG_CTL_SHORT_DETECT(tc_port) (1 << (tc_port) * 4) +#define GEN11_HOTPLUG_CTL_NO_DETECT(tc_port) (0 << (tc_port) * 4) + #define GEN11_GT_INTR_DW0 _MMIO(0x190018) #define GEN11_CSME (31) #define GEN11_GUNIT (28) |