From: Xiong Zhang Date: Mon, 17 Aug 2015 07:55:50 +0000 (+0800) Subject: drm/i915/skl: enable DDI-E hotplug X-Git-Tag: v4.14-rc1~4701^2~11^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=26951caf55d73ceb1967b0bf12f6d0b96853508e;p=platform%2Fkernel%2Flinux-rpi.git drm/i915/skl: enable DDI-E hotplug v2: fix one error found by checkpath.pl v3: Add one ignored break for switch-case. DDI-E hotplug function doesn't work after updating drm-intel tree, I checked the code and found this missing which isn't the root cause for broke DDI-E hp. The broken DDI-E hp function is fixed by "Adding DDI_E power well domain". Signed-off-by: Xiong Zhang Reviewed-by: Rodrigo Vivi Tested-by: Timo Aaltonen Signed-off-by: Jani Nikula --- diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 599441b..089459b 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -214,6 +214,7 @@ enum hpd_pin { HPD_PORT_B, HPD_PORT_C, HPD_PORT_D, + HPD_PORT_E, HPD_NUM_PINS }; diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 1118c392..d94c92d 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -61,6 +61,13 @@ static const u32 hpd_cpt[HPD_NUM_PINS] = { [HPD_PORT_D] = SDE_PORTD_HOTPLUG_CPT }; +static const u32 hpd_spt[HPD_NUM_PINS] = { + [HPD_PORT_B] = SDE_PORTB_HOTPLUG_CPT, + [HPD_PORT_C] = SDE_PORTC_HOTPLUG_CPT, + [HPD_PORT_D] = SDE_PORTD_HOTPLUG_CPT, + [HPD_PORT_E] = SDE_PORTE_HOTPLUG_SPT +}; + static const u32 hpd_mask_i915[HPD_NUM_PINS] = { [HPD_CRT] = CRT_HOTPLUG_INT_EN, [HPD_SDVO_B] = SDVOB_HOTPLUG_INT_EN, @@ -1252,6 +1259,8 @@ static bool pch_port_hotplug_long_detect(enum port port, u32 val) return val & PORTC_HOTPLUG_LONG_DETECT; case PORT_D: return val & PORTD_HOTPLUG_LONG_DETECT; + case PORT_E: + return val & PORTE_HOTPLUG_LONG_DETECT; default: return false; } @@ -1752,7 +1761,12 @@ static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir) { struct drm_i915_private *dev_priv = dev->dev_private; int pipe; - u32 hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT; + u32 hotplug_trigger; + + if (HAS_PCH_SPT(dev)) + hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_SPT; + else + hotplug_trigger = pch_iir & SDE_HOTPLUG_MASK_CPT; if (hotplug_trigger) { u32 dig_hotplug_reg, pin_mask, long_mask; @@ -1760,9 +1774,23 @@ static void cpt_irq_handler(struct drm_device *dev, u32 pch_iir) dig_hotplug_reg = I915_READ(PCH_PORT_HOTPLUG); I915_WRITE(PCH_PORT_HOTPLUG, dig_hotplug_reg); - intel_get_hpd_pins(&pin_mask, &long_mask, hotplug_trigger, - dig_hotplug_reg, hpd_cpt, - pch_port_hotplug_long_detect); + if (HAS_PCH_SPT(dev)) { + intel_get_hpd_pins(&pin_mask, &long_mask, + hotplug_trigger, + dig_hotplug_reg, hpd_spt, + pch_port_hotplug_long_detect); + + /* detect PORTE HP event */ + dig_hotplug_reg = I915_READ(PCH_PORT_HOTPLUG2); + if (pch_port_hotplug_long_detect(PORT_E, + dig_hotplug_reg)) + long_mask |= 1 << HPD_PORT_E; + } else + intel_get_hpd_pins(&pin_mask, &long_mask, + hotplug_trigger, + dig_hotplug_reg, hpd_cpt, + pch_port_hotplug_long_detect); + intel_hpd_irq_handler(dev, pin_mask, long_mask); } @@ -2984,6 +3012,11 @@ static void ibx_hpd_irq_setup(struct drm_device *dev) for_each_intel_encoder(dev, intel_encoder) if (dev_priv->hotplug.stats[intel_encoder->hpd_pin].state == HPD_ENABLED) enabled_irqs |= hpd_ibx[intel_encoder->hpd_pin]; + } else if (HAS_PCH_SPT(dev)) { + hotplug_irqs = SDE_HOTPLUG_MASK_SPT; + for_each_intel_encoder(dev, intel_encoder) + if (dev_priv->hotplug.stats[intel_encoder->hpd_pin].state == HPD_ENABLED) + enabled_irqs |= hpd_spt[intel_encoder->hpd_pin]; } else { hotplug_irqs = SDE_HOTPLUG_MASK_CPT; for_each_intel_encoder(dev, intel_encoder) @@ -3005,6 +3038,13 @@ static void ibx_hpd_irq_setup(struct drm_device *dev) hotplug |= PORTC_HOTPLUG_ENABLE | PORTC_PULSE_DURATION_2ms; hotplug |= PORTB_HOTPLUG_ENABLE | PORTB_PULSE_DURATION_2ms; I915_WRITE(PCH_PORT_HOTPLUG, hotplug); + + /* enable SPT PORTE hot plug */ + if (HAS_PCH_SPT(dev)) { + hotplug = I915_READ(PCH_PORT_HOTPLUG2); + hotplug |= PORTE_HOTPLUG_ENABLE; + I915_WRITE(PCH_PORT_HOTPLUG2, hotplug); + } } static void bxt_hpd_irq_setup(struct drm_device *dev) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 8e46c34..83a0888 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -5949,6 +5949,7 @@ enum skl_disp_power_wells { #define SDE_AUXC_CPT (1 << 26) #define SDE_AUXB_CPT (1 << 25) #define SDE_AUX_MASK_CPT (7 << 25) +#define SDE_PORTE_HOTPLUG_SPT (1 << 25) #define SDE_PORTD_HOTPLUG_CPT (1 << 23) #define SDE_PORTC_HOTPLUG_CPT (1 << 22) #define SDE_PORTB_HOTPLUG_CPT (1 << 21) @@ -5959,6 +5960,10 @@ enum skl_disp_power_wells { SDE_PORTD_HOTPLUG_CPT | \ SDE_PORTC_HOTPLUG_CPT | \ SDE_PORTB_HOTPLUG_CPT) +#define SDE_HOTPLUG_MASK_SPT (SDE_PORTE_HOTPLUG_SPT | \ + SDE_PORTD_HOTPLUG_CPT | \ + SDE_PORTC_HOTPLUG_CPT | \ + SDE_PORTB_HOTPLUG_CPT) #define SDE_GMBUS_CPT (1 << 17) #define SDE_ERROR_CPT (1 << 16) #define SDE_AUDIO_CP_REQ_C_CPT (1 << 10) @@ -6030,6 +6035,13 @@ enum skl_disp_power_wells { #define PORTB_HOTPLUG_SHORT_DETECT (1 << 0) #define PORTB_HOTPLUG_LONG_DETECT (2 << 0) +#define PCH_PORT_HOTPLUG2 0xc403C /* SHOTPLUG_CTL2 */ +#define PORTE_HOTPLUG_ENABLE (1 << 4) +#define PORTE_HOTPLUG_STATUS_MASK (0x3 << 0) +#define PORTE_HOTPLUG_NO_DETECT (0 << 0) +#define PORTE_HOTPLUG_SHORT_DETECT (1 << 0) +#define PORTE_HOTPLUG_LONG_DETECT (2 << 0) + #define PCH_GPIOA 0xc5010 #define PCH_GPIOB 0xc5014 #define PCH_GPIOC 0xc5018 diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 83936403..53f5476 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1098,6 +1098,9 @@ bool ibx_digital_port_connected(struct drm_i915_private *dev_priv, case PORT_D: bit = SDE_PORTD_HOTPLUG_CPT; break; + case PORT_E: + bit = SDE_PORTE_HOTPLUG_SPT; + break; default: return true; } diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 260ff8b..3781cd3 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -5860,6 +5860,9 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port, case PORT_D: intel_encoder->hpd_pin = HPD_PORT_D; break; + case PORT_E: + intel_encoder->hpd_pin = HPD_PORT_E; + break; default: BUG(); } diff --git a/drivers/gpu/drm/i915/intel_hotplug.c b/drivers/gpu/drm/i915/intel_hotplug.c index 032a0bf..53c0173 100644 --- a/drivers/gpu/drm/i915/intel_hotplug.c +++ b/drivers/gpu/drm/i915/intel_hotplug.c @@ -91,6 +91,9 @@ bool intel_hpd_pin_to_port(enum hpd_pin pin, enum port *port) case HPD_PORT_D: *port = PORT_D; return true; + case HPD_PORT_E: + *port = PORT_E; + return true; default: return false; /* no hpd */ }