On Fri, Feb 16, 2018 at 03:25:55PM -0800, Dhinakaran Pandiyan wrote:
> PSR requires AUX IO well to be kept on and the existing AUX domain
> enables other wells too.
>
Cc: Imre Deak <imre.deak@xxxxxxxxx>
> Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_display.h | 5 +++++
> drivers/gpu/drm/i915/intel_dp.c | 6 ++++++
> drivers/gpu/drm/i915/intel_drv.h | 1 +
> drivers/gpu/drm/i915/intel_psr.c | 4 ++++
> drivers/gpu/drm/i915/intel_runtime_pm.c | 15 +++++++++++++++
> 5 files changed, 31 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_display.h b/drivers/gpu/drm/i915/intel_display.h
> index c4042e342f50..9857b60a7e0f 100644
> --- a/drivers/gpu/drm/i915/intel_display.h
> +++ b/drivers/gpu/drm/i915/intel_display.h
> @@ -175,6 +175,11 @@ enum intel_display_power_domain {
> POWER_DOMAIN_AUX_C,
> POWER_DOMAIN_AUX_D,
> POWER_DOMAIN_AUX_F,
> + POWER_DOMAIN_AUX_IO_A,
> + POWER_DOMAIN_AUX_IO_B,
> + POWER_DOMAIN_AUX_IO_C,
> + POWER_DOMAIN_AUX_IO_D,
> + POWER_DOMAIN_AUX_IO_F,
I know that I had suggested something very similar, but looking now
to the code it seems a big duplication of all other aux..
I mean, on CNL
POWER_DOMAIN_AUX_{B,C,D,F} are exactly the same as
POWER_DOMAIN_AUX__IO_{B,C,D,F}
Only the AUX_IO A is different from the AUX_A because AUX_A
disables DMC.
So, question is: What about removing the AUX_A domain from DC_OFF
and just using AUX doamins... Well, on this case calling get/put
only for INTEL_GEN <= 10...
So, yeap, not beautiful anyways.
I'd like to hear from Imre what he had in mind for handling
AUX IOs and to know if he has any better idea for this case.
> POWER_DOMAIN_GMBUS,
> POWER_DOMAIN_MODESET,
> POWER_DOMAIN_GT_IRQ,
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index f20b25f98e5a..aa90f6a70689 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -6280,22 +6280,28 @@ intel_dp_init_connector_port_info(struct intel_digital_port *intel_dig_port)
> switch (encoder->port) {
> case PORT_A:
> intel_dp->aux_power_domain = POWER_DOMAIN_AUX_A;
> + intel_dp->aux_io_power_domain = POWER_DOMAIN_AUX_IO_A;
> break;
> case PORT_B:
> intel_dp->aux_power_domain = POWER_DOMAIN_AUX_B;
> + intel_dp->aux_io_power_domain = POWER_DOMAIN_AUX_IO_B;
> break;
> case PORT_C:
> intel_dp->aux_power_domain = POWER_DOMAIN_AUX_C;
> + intel_dp->aux_io_power_domain = POWER_DOMAIN_AUX_IO_C;
> break;
> case PORT_D:
> intel_dp->aux_power_domain = POWER_DOMAIN_AUX_D;
> + intel_dp->aux_io_power_domain = POWER_DOMAIN_AUX_IO_D;
> break;
> case PORT_E:
> /* FIXME: Check VBT for actual wiring of PORT E */
> intel_dp->aux_power_domain = POWER_DOMAIN_AUX_D;
> + intel_dp->aux_io_power_domain = POWER_DOMAIN_AUX_IO_D;
> break;
> case PORT_F:
> intel_dp->aux_power_domain = POWER_DOMAIN_AUX_F;
> + intel_dp->aux_io_power_domain = POWER_DOMAIN_AUX_IO_F;
> break;
> default:
> MISSING_CASE(encoder->port);
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index 898064e8bea7..c7c4180e41d8 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1071,6 +1071,7 @@ struct intel_dp {
> struct drm_dp_desc desc;
> struct drm_dp_aux aux;
> enum intel_display_power_domain aux_power_domain;
> + enum intel_display_power_domain aux_io_power_domain;
> uint8_t train_set[4];
> int panel_power_up_delay;
> int panel_power_down_delay;
> diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
> index 2ef374f936b9..62de8f0632b0 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -484,6 +484,8 @@ static void hsw_psr_enable_source(struct intel_dp *intel_dp,
> EDP_PSR_DEBUG_MASK_HPD |
> EDP_PSR_DEBUG_MASK_LPSP);
> }
> +
> + intel_display_power_get(dev_priv, intel_dp->aux_io_power_domain);
> }
>
> /**
> @@ -617,6 +619,8 @@ static void hsw_psr_disable(struct intel_dp *intel_dp,
> else
> WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE);
> }
> +
> + intel_display_power_put(dev_priv, intel_dp->aux_io_power_domain);
> }
>
> /**
> diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
> index 16790f2576ec..323c1babb0a0 100644
> --- a/drivers/gpu/drm/i915/intel_runtime_pm.c
> +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
> @@ -130,6 +130,16 @@ intel_display_power_domain_str(enum intel_display_power_domain domain)
> return "AUX_D";
> case POWER_DOMAIN_AUX_F:
> return "AUX_F";
> + case POWER_DOMAIN_AUX_IO_A:
> + return "AUX_IO_A";
> + case POWER_DOMAIN_AUX_IO_B:
> + return "AUX_IO_B";
> + case POWER_DOMAIN_AUX_IO_C:
> + return "AUX_IO_C";
> + case POWER_DOMAIN_AUX_IO_D:
> + return "AUX_IO_D";
> + case POWER_DOMAIN_AUX_IO_F:
> + return "AUX_IO_F";
> case POWER_DOMAIN_GMBUS:
> return "GMBUS";
> case POWER_DOMAIN_INIT:
> @@ -1853,18 +1863,23 @@ void intel_display_power_put(struct drm_i915_private *dev_priv,
> BIT_ULL(POWER_DOMAIN_INIT))
> #define CNL_DISPLAY_AUX_A_POWER_DOMAINS ( \
> BIT_ULL(POWER_DOMAIN_AUX_A) | \
> + BIT_ULL(POWER_DOMAIN_AUX_IO_A) | \
> BIT_ULL(POWER_DOMAIN_INIT))
> #define CNL_DISPLAY_AUX_B_POWER_DOMAINS ( \
> BIT_ULL(POWER_DOMAIN_AUX_B) | \
> + BIT_ULL(POWER_DOMAIN_AUX_IO_B) | \
> BIT_ULL(POWER_DOMAIN_INIT))
> #define CNL_DISPLAY_AUX_C_POWER_DOMAINS ( \
> BIT_ULL(POWER_DOMAIN_AUX_C) | \
> + BIT_ULL(POWER_DOMAIN_AUX_IO_C) | \
> BIT_ULL(POWER_DOMAIN_INIT))
> #define CNL_DISPLAY_AUX_D_POWER_DOMAINS ( \
> BIT_ULL(POWER_DOMAIN_AUX_D) | \
> + BIT_ULL(POWER_DOMAIN_AUX_IO_D) | \
> BIT_ULL(POWER_DOMAIN_INIT))
> #define CNL_DISPLAY_AUX_F_POWER_DOMAINS ( \
> BIT_ULL(POWER_DOMAIN_AUX_F) | \
> + BIT_ULL(POWER_DOMAIN_AUX_IO_F) | \
> BIT_ULL(POWER_DOMAIN_INIT))
> #define CNL_DISPLAY_DDI_F_IO_POWER_DOMAINS ( \
> BIT_ULL(POWER_DOMAIN_PORT_DDI_F_IO) | \
> --
> 2.14.1
>
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