| Message ID | 1458821451-19079-2-git-send-email-shubhangi.shrivastava@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Mar 24, 2016 at 05:40:51PM +0530, Shubhangi Shrivastava wrote: > This patch sets the invert bit for hpd detection for each port > based on VBT configuration. Since each AOB can be designed to > depend on invert bit or not, it is expected if an AOB requires > invert bit, the user will set respective bit in VBT. > > v2: Separated VBT parsing from the rest of the logic. (Jani) > > v3: Moved setting invert bit logic to bxt_hpd_irq_setup() > and changed its logic to avoid looping twice. (Ville) > > v4: Changed the logic to mask out the bits first and then > set them to remove need of temporary variable. (Ville) > > v5: Moved defines to existing set of defines for the register > Changed logic to incorporate required breaks. (Ville) > > Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com> > Signed-off-by: Durgadoss R <durgadoss.r@intel.com> > Signed-off-by: Shubhangi Shrivastava <shubhangi.shrivastava@intel.com> > Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> > --- > drivers/gpu/drm/i915/i915_drv.h | 2 ++ > drivers/gpu/drm/i915/i915_irq.c | 20 ++++++++++++++++++++ > drivers/gpu/drm/i915/i915_reg.h | 6 ++++++ > drivers/gpu/drm/i915/intel_bios.c | 32 ++++++++++++++++++++++++++++++++ > 4 files changed, 60 insertions(+) > > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h > index 9d29ab0..86fb5cb 100644 > --- a/drivers/gpu/drm/i915/i915_drv.h > +++ b/drivers/gpu/drm/i915/i915_drv.h > @@ -3396,6 +3396,8 @@ bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv); > bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin); > bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port); > bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port); > +bool intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv, > + enum port port); > > /* intel_opregion.c */ > #ifdef CONFIG_ACPI > diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c > index a55a7cc..8fbec3e 100644 > --- a/drivers/gpu/drm/i915/i915_irq.c > +++ b/drivers/gpu/drm/i915/i915_irq.c > @@ -3504,6 +3504,26 @@ static void bxt_hpd_irq_setup(struct drm_device *dev) > hotplug = I915_READ(PCH_PORT_HOTPLUG); > hotplug |= PORTC_HOTPLUG_ENABLE | PORTB_HOTPLUG_ENABLE | > PORTA_HOTPLUG_ENABLE; > + > + DRM_DEBUG_KMS("Invert bit setting: hp_ctl:%x hp_port:%x\n", > + hotplug, enabled_irqs); > + hotplug &= ~BXT_DDI_HPD_INVERT_MASK; > + > + /* > + * For BXT invert bit has to be set based on AOB design > + * for HPD detection logic, update it based on VBT fields. > + */ > + > + if ((enabled_irqs & BXT_DE_PORT_HP_DDIA) && > + intel_bios_is_port_hpd_inverted(dev_priv, PORT_A)) > + hotplug |= BXT_DDIA_HPD_INVERT; > + if ((enabled_irqs & BXT_DE_PORT_HP_DDIB) && > + intel_bios_is_port_hpd_inverted(dev_priv, PORT_B)) > + hotplug |= BXT_DDIB_HPD_INVERT; > + if ((enabled_irqs & BXT_DE_PORT_HP_DDIC) && > + intel_bios_is_port_hpd_inverted(dev_priv, PORT_C)) > + hotplug |= BXT_DDIC_HPD_INVERT; > + > I915_WRITE(PCH_PORT_HOTPLUG, hotplug); > } > > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h > index f3ba43c..73a806c 100644 > --- a/drivers/gpu/drm/i915/i915_reg.h > +++ b/drivers/gpu/drm/i915/i915_reg.h > @@ -6185,6 +6185,7 @@ enum skl_disp_power_wells { > /* digital port hotplug */ > #define PCH_PORT_HOTPLUG _MMIO(0xc4030) /* SHOTPLUG_CTL */ > #define PORTA_HOTPLUG_ENABLE (1 << 28) /* LPT:LP+ & BXT */ > +#define BXT_DDIA_HPD_INVERT (1 << 27) > #define PORTA_HOTPLUG_STATUS_MASK (3 << 24) /* SPT+ & BXT */ > #define PORTA_HOTPLUG_NO_DETECT (0 << 24) /* SPT+ & BXT */ > #define PORTA_HOTPLUG_SHORT_DETECT (1 << 24) /* SPT+ & BXT */ > @@ -6200,6 +6201,7 @@ enum skl_disp_power_wells { > #define PORTD_HOTPLUG_SHORT_DETECT (1 << 16) > #define PORTD_HOTPLUG_LONG_DETECT (2 << 16) > #define PORTC_HOTPLUG_ENABLE (1 << 12) > +#define BXT_DDIC_HPD_INVERT (1 << 11) > #define PORTC_PULSE_DURATION_2ms (0 << 10) /* pre-LPT */ > #define PORTC_PULSE_DURATION_4_5ms (1 << 10) /* pre-LPT */ > #define PORTC_PULSE_DURATION_6ms (2 << 10) /* pre-LPT */ > @@ -6210,6 +6212,7 @@ enum skl_disp_power_wells { > #define PORTC_HOTPLUG_SHORT_DETECT (1 << 8) > #define PORTC_HOTPLUG_LONG_DETECT (2 << 8) > #define PORTB_HOTPLUG_ENABLE (1 << 4) > +#define BXT_DDIB_HPD_INVERT (1 << 3) > #define PORTB_PULSE_DURATION_2ms (0 << 2) /* pre-LPT */ > #define PORTB_PULSE_DURATION_4_5ms (1 << 2) /* pre-LPT */ > #define PORTB_PULSE_DURATION_6ms (2 << 2) /* pre-LPT */ > @@ -6219,6 +6222,9 @@ enum skl_disp_power_wells { > #define PORTB_HOTPLUG_NO_DETECT (0 << 0) > #define PORTB_HOTPLUG_SHORT_DETECT (1 << 0) > #define PORTB_HOTPLUG_LONG_DETECT (2 << 0) > +#define BXT_DDI_HPD_INVERT_MASK (BXT_DDIA_HPD_INVERT | \ > + BXT_DDIB_HPD_INVERT | \ > + BXT_DDIC_HPD_INVERT) > > #define PCH_PORT_HOTPLUG2 _MMIO(0xc403C) /* SHOTPLUG_CTL2 SPT+ */ > #define PORTE_HOTPLUG_ENABLE (1 << 4) > diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c > index e2f636c..e015a95 100644 > --- a/drivers/gpu/drm/i915/intel_bios.c > +++ b/drivers/gpu/drm/i915/intel_bios.c > @@ -107,6 +107,38 @@ find_section(const void *_bdb, int section_id) > return NULL; > } > > +bool > +intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv, > + enum port port) > +{ > + int i; > + > + if (WARN_ON_ONCE(!IS_BROXTON(dev_priv))) > + return false; > + > + for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { > + > + if (!dev_priv->vbt.child_dev[i].common.hpd_invert) > + continue; > + > + switch (dev_priv->vbt.child_dev[i].common.dvo_port) { > + case DVO_PORT_DPA: > + case DVO_PORT_HDMIA: > + return port == PORT_A; > + case DVO_PORT_DPB: > + case DVO_PORT_HDMIB: > + return port == PORT_B; > + case DVO_PORT_DPC: > + case DVO_PORT_HDMIC: > + return port == PORT_C; That doesn't actually work. Eg. if called with port==PORT_B and there's a port A listed first in the VBT with hpd_invert==true, we'll end up returning false always for PORT_B regardless of what VBT says we should return for port B. > + default: > + break; > + } > + } > + > + return false; > +} > + > static void > fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, > const struct lvds_dvo_timing *dvo_timing) > -- > 2.6.1
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 9d29ab0..86fb5cb 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -3396,6 +3396,8 @@ bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv); bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin); bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port); bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port); +bool intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv, + enum port port); /* intel_opregion.c */ #ifdef CONFIG_ACPI diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index a55a7cc..8fbec3e 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -3504,6 +3504,26 @@ static void bxt_hpd_irq_setup(struct drm_device *dev) hotplug = I915_READ(PCH_PORT_HOTPLUG); hotplug |= PORTC_HOTPLUG_ENABLE | PORTB_HOTPLUG_ENABLE | PORTA_HOTPLUG_ENABLE; + + DRM_DEBUG_KMS("Invert bit setting: hp_ctl:%x hp_port:%x\n", + hotplug, enabled_irqs); + hotplug &= ~BXT_DDI_HPD_INVERT_MASK; + + /* + * For BXT invert bit has to be set based on AOB design + * for HPD detection logic, update it based on VBT fields. + */ + + if ((enabled_irqs & BXT_DE_PORT_HP_DDIA) && + intel_bios_is_port_hpd_inverted(dev_priv, PORT_A)) + hotplug |= BXT_DDIA_HPD_INVERT; + if ((enabled_irqs & BXT_DE_PORT_HP_DDIB) && + intel_bios_is_port_hpd_inverted(dev_priv, PORT_B)) + hotplug |= BXT_DDIB_HPD_INVERT; + if ((enabled_irqs & BXT_DE_PORT_HP_DDIC) && + intel_bios_is_port_hpd_inverted(dev_priv, PORT_C)) + hotplug |= BXT_DDIC_HPD_INVERT; + I915_WRITE(PCH_PORT_HOTPLUG, hotplug); } diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index f3ba43c..73a806c 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6185,6 +6185,7 @@ enum skl_disp_power_wells { /* digital port hotplug */ #define PCH_PORT_HOTPLUG _MMIO(0xc4030) /* SHOTPLUG_CTL */ #define PORTA_HOTPLUG_ENABLE (1 << 28) /* LPT:LP+ & BXT */ +#define BXT_DDIA_HPD_INVERT (1 << 27) #define PORTA_HOTPLUG_STATUS_MASK (3 << 24) /* SPT+ & BXT */ #define PORTA_HOTPLUG_NO_DETECT (0 << 24) /* SPT+ & BXT */ #define PORTA_HOTPLUG_SHORT_DETECT (1 << 24) /* SPT+ & BXT */ @@ -6200,6 +6201,7 @@ enum skl_disp_power_wells { #define PORTD_HOTPLUG_SHORT_DETECT (1 << 16) #define PORTD_HOTPLUG_LONG_DETECT (2 << 16) #define PORTC_HOTPLUG_ENABLE (1 << 12) +#define BXT_DDIC_HPD_INVERT (1 << 11) #define PORTC_PULSE_DURATION_2ms (0 << 10) /* pre-LPT */ #define PORTC_PULSE_DURATION_4_5ms (1 << 10) /* pre-LPT */ #define PORTC_PULSE_DURATION_6ms (2 << 10) /* pre-LPT */ @@ -6210,6 +6212,7 @@ enum skl_disp_power_wells { #define PORTC_HOTPLUG_SHORT_DETECT (1 << 8) #define PORTC_HOTPLUG_LONG_DETECT (2 << 8) #define PORTB_HOTPLUG_ENABLE (1 << 4) +#define BXT_DDIB_HPD_INVERT (1 << 3) #define PORTB_PULSE_DURATION_2ms (0 << 2) /* pre-LPT */ #define PORTB_PULSE_DURATION_4_5ms (1 << 2) /* pre-LPT */ #define PORTB_PULSE_DURATION_6ms (2 << 2) /* pre-LPT */ @@ -6219,6 +6222,9 @@ enum skl_disp_power_wells { #define PORTB_HOTPLUG_NO_DETECT (0 << 0) #define PORTB_HOTPLUG_SHORT_DETECT (1 << 0) #define PORTB_HOTPLUG_LONG_DETECT (2 << 0) +#define BXT_DDI_HPD_INVERT_MASK (BXT_DDIA_HPD_INVERT | \ + BXT_DDIB_HPD_INVERT | \ + BXT_DDIC_HPD_INVERT) #define PCH_PORT_HOTPLUG2 _MMIO(0xc403C) /* SHOTPLUG_CTL2 SPT+ */ #define PORTE_HOTPLUG_ENABLE (1 << 4) diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index e2f636c..e015a95 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -107,6 +107,38 @@ find_section(const void *_bdb, int section_id) return NULL; } +bool +intel_bios_is_port_hpd_inverted(struct drm_i915_private *dev_priv, + enum port port) +{ + int i; + + if (WARN_ON_ONCE(!IS_BROXTON(dev_priv))) + return false; + + for (i = 0; i < dev_priv->vbt.child_dev_num; i++) { + + if (!dev_priv->vbt.child_dev[i].common.hpd_invert) + continue; + + switch (dev_priv->vbt.child_dev[i].common.dvo_port) { + case DVO_PORT_DPA: + case DVO_PORT_HDMIA: + return port == PORT_A; + case DVO_PORT_DPB: + case DVO_PORT_HDMIB: + return port == PORT_B; + case DVO_PORT_DPC: + case DVO_PORT_HDMIC: + return port == PORT_C; + default: + break; + } + } + + return false; +} + static void fill_detail_timing_data(struct drm_display_mode *panel_fixed_mode, const struct lvds_dvo_timing *dvo_timing)
This patch sets the invert bit for hpd detection for each port based on VBT configuration. Since each AOB can be designed to depend on invert bit or not, it is expected if an AOB requires invert bit, the user will set respective bit in VBT. v2: Separated VBT parsing from the rest of the logic. (Jani) v3: Moved setting invert bit logic to bxt_hpd_irq_setup() and changed its logic to avoid looping twice. (Ville) v4: Changed the logic to mask out the bits first and then set them to remove need of temporary variable. (Ville) v5: Moved defines to existing set of defines for the register Changed logic to incorporate required breaks. (Ville) Signed-off-by: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com> Signed-off-by: Durgadoss R <durgadoss.r@intel.com> Signed-off-by: Shubhangi Shrivastava <shubhangi.shrivastava@intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> --- drivers/gpu/drm/i915/i915_drv.h | 2 ++ drivers/gpu/drm/i915/i915_irq.c | 20 ++++++++++++++++++++ drivers/gpu/drm/i915/i915_reg.h | 6 ++++++ drivers/gpu/drm/i915/intel_bios.c | 32 ++++++++++++++++++++++++++++++++ 4 files changed, 60 insertions(+)