From: Ville Syrjälä Date: Thu, 27 Aug 2015 20:56:11 +0000 (+0300) Subject: drm/i915: Rewrite BXT HPD code to conform to pre-existing style X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a52bb15bfad09115cff2433e76b164be94c42af5;p=linux-beck.git drm/i915: Rewrite BXT HPD code to conform to pre-existing style Rewrite the BXT hpd setup to match the way we do it on other platforms: - Throw out BXT_HOTPLUG_CTL since it's the same as PCH_PORT_HOTPLUG - Enable the HPD bits in the DE port IER in gen8_de_irq_postinstall() - Update DE port IMR using bdw_update_port_irq() Also throw out port D from bxt_port_hotplug_long_detect() since BXT only goes up to C. Signed-off-by: Ville Syrjälä Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index d7a37a5cf93f..218fe1247e54 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1300,8 +1300,6 @@ static bool bxt_port_hotplug_long_detect(enum port port, u32 val) return val & PORTB_HOTPLUG_LONG_DETECT; case PORT_C: return val & PORTC_HOTPLUG_LONG_DETECT; - case PORT_D: - return val & PORTD_HOTPLUG_LONG_DETECT; default: return false; } @@ -2128,8 +2126,8 @@ static void bxt_hpd_irq_handler(struct drm_device *dev, u32 hotplug_trigger, struct drm_i915_private *dev_priv = to_i915(dev); u32 dig_hotplug_reg, pin_mask = 0, long_mask = 0; - dig_hotplug_reg = I915_READ(BXT_HOTPLUG_CTL); - I915_WRITE(BXT_HOTPLUG_CTL, dig_hotplug_reg); + 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, @@ -3247,27 +3245,17 @@ static void ilk_hpd_irq_setup(struct drm_device *dev) static void bxt_hpd_irq_setup(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - u32 hotplug_port; - u32 hotplug_ctrl; - - hotplug_port = intel_hpd_enabled_irqs(dev, hpd_bxt); - - hotplug_ctrl = I915_READ(BXT_HOTPLUG_CTL) & ~BXT_HOTPLUG_CTL_MASK; + u32 hotplug_irqs, hotplug, enabled_irqs; - if (hotplug_port & BXT_DE_PORT_HP_DDIA) - hotplug_ctrl |= BXT_DDIA_HPD_ENABLE; - if (hotplug_port & BXT_DE_PORT_HP_DDIB) - hotplug_ctrl |= BXT_DDIB_HPD_ENABLE; - if (hotplug_port & BXT_DE_PORT_HP_DDIC) - hotplug_ctrl |= BXT_DDIC_HPD_ENABLE; - I915_WRITE(BXT_HOTPLUG_CTL, hotplug_ctrl); + enabled_irqs = intel_hpd_enabled_irqs(dev, hpd_bxt); + hotplug_irqs = BXT_DE_PORT_HOTPLUG_MASK; - hotplug_ctrl = I915_READ(GEN8_DE_PORT_IMR) & ~hotplug_port; - I915_WRITE(GEN8_DE_PORT_IMR, hotplug_ctrl); + bdw_update_port_irq(dev_priv, hotplug_irqs, enabled_irqs); - hotplug_ctrl = I915_READ(GEN8_DE_PORT_IER) | hotplug_port; - I915_WRITE(GEN8_DE_PORT_IER, hotplug_ctrl); - POSTING_READ(GEN8_DE_PORT_IER); + hotplug = I915_READ(PCH_PORT_HOTPLUG); + hotplug |= PORTC_HOTPLUG_ENABLE | PORTB_HOTPLUG_ENABLE | + PORTA_HOTPLUG_ENABLE; + I915_WRITE(PCH_PORT_HOTPLUG, hotplug); } static void ibx_irq_postinstall(struct drm_device *dev) @@ -3561,7 +3549,9 @@ static void gen8_de_irq_postinstall(struct drm_i915_private *dev_priv) GEN8_PIPE_FIFO_UNDERRUN; de_port_enables = de_port_masked; - if (IS_BROADWELL(dev_priv)) + if (IS_BROXTON(dev_priv)) + de_port_enables |= BXT_DE_PORT_HOTPLUG_MASK; + else if (IS_BROADWELL(dev_priv)) de_port_enables |= GEN8_PORT_DP_A_HOTPLUG; dev_priv->de_irq_mask[PIPE_A] = ~de_pipe_masked; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 689b42813141..5811eebafd16 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -5797,21 +5797,6 @@ enum skl_disp_power_wells { #define GEN8_PCU_IIR 0x444e8 #define GEN8_PCU_IER 0x444ec -/* BXT hotplug control */ -#define BXT_HOTPLUG_CTL 0xC4030 -#define BXT_DDIA_HPD_ENABLE (1 << 28) -#define BXT_DDIA_HPD_STATUS (3 << 24) -#define BXT_DDIC_HPD_ENABLE (1 << 12) -#define BXT_DDIC_HPD_STATUS (3 << 8) -#define BXT_DDIB_HPD_ENABLE (1 << 4) -#define BXT_DDIB_HPD_STATUS (3 << 0) -#define BXT_HOTPLUG_CTL_MASK (BXT_DDIA_HPD_ENABLE | \ - BXT_DDIB_HPD_ENABLE | \ - BXT_DDIC_HPD_ENABLE) -#define BXT_HPD_STATUS_MASK (BXT_DDIA_HPD_STATUS | \ - BXT_DDIB_HPD_STATUS | \ - BXT_DDIC_HPD_STATUS) - #define ILK_DISPLAY_CHICKEN2 0x42004 /* Required on all Ironlake and Sandybridge according to the B-Spec. */ #define ILK_ELPIN_409_SELECT (1 << 25)