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From: Jani Nikula <jani.nikula@linux.intel.com>
To: Lucas De Marchi <lucas.demarchi@intel.com>,
	intel-gfx@lists.freedesktop.org
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Subject: Re: [Intel-gfx] [PATCH v2 4/6] drm/i915/display: add phy, vbt and ddi indexes
Date: Wed, 01 Jul 2020 17:58:34 +0300	[thread overview]
Message-ID: <87d05fl1t1.fsf@intel.com> (raw)
In-Reply-To: <20200625001120.22810-5-lucas.demarchi@intel.com>

On Wed, 24 Jun 2020, Lucas De Marchi <lucas.demarchi@intel.com> wrote:
> Identify 3 possible cases in which the index numbers can be different
> from the "port" and add them to the description-based ddi initialization
> table.  This can be used in place of additional functions mapping from
> one to the other.  Right now we already cover part of this by creating kind of
> virtual phy numbering, but that comes with downsides:
>
> a) there's not really a "phy numbering" in the spec, this is purely a
> software thing; hardware uses whatever they want thinking mapping from
> one to the other arbitrarily is easy in software.
>
> b) currently the mapping occurs on "leaf" functions, making the decision
> based on the platform for each of those functions
>
> With this new table the approach will be: the port, as defined by the
> enum port, is merely a driver convention and won't be used anymore to
> define the register offset or register bits. For that we have the other
> 3 indexes, identified as being possibly different from the current usage
> of register bits: ddi, vbt and phy. The phy type is also added here,
> meant to replace the checks for combo vs tc.
>
> v2: Rebase and add RKL
>

I guess I'd like to see where the *_idx fields will lead before
advocating for this.

With them removed,

Acked-by: Jani Nikula <jani.nikula@intel.com>

But I'm also not saying you can't have them - until I see where this
leads. ;)

One comment inline below.

> Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c  | 64 ++++++++++---------
>  drivers/gpu/drm/i915/display/intel_display.h  |  8 +++
>  .../drm/i915/display/intel_display_types.h    |  4 ++
>  3 files changed, 45 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index c234b50212b0..d591063502c5 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -16806,57 +16806,59 @@ static void intel_pps_init(struct drm_i915_private *dev_priv)
>  }
>  
>  static const struct intel_ddi_port_info rkl_ports[] = {
> -	{ .name = "DDI A",   .port = PORT_A },
> -	{ .name = "DDI B",   .port = PORT_B },
> -	{ .name = "DDI TC1", .port = PORT_D },
> -	{ .name = "DDI TC2", .port = PORT_E },
> +	{ .name = "DDI A", .port = PORT_A, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x0, .phy_idx = 0x0, .vbt_idx = 0x0, },
> +	{ .name = "DDI B", .port = PORT_B, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x1, .phy_idx = 0x1, .vbt_idx = 0x1, },
> +	/* TODO: use continguous namespace for port once driver is converted */
> +	{ .name = "DDI C", .port = PORT_D, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x3, .phy_idx = 0x2, .vbt_idx = 0x2, },
> +	{ .name = "DDI D", .port = PORT_E, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x4, .phy_idx = 0x3, .vbt_idx = 0x3, },
>  	{ .port = PORT_NONE }
>  };
>  
>  static const struct intel_ddi_port_info tgl_ports[] = {
> -	{ .name = "DDI A",   .port = PORT_A },
> -	{ .name = "DDI B",   .port = PORT_B },
> -	{ .name = "DDI TC1", .port = PORT_D },
> -	{ .name = "DDI TC2", .port = PORT_E },
> -	{ .name = "DDI TC3", .port = PORT_F },
> -	{ .name = "DDI TC4", .port = PORT_G },
> -	{ .name = "DDI TC5", .port = PORT_H },
> -	{ .name = "DDI TC6", .port = PORT_I },
> +	{ .name = "DDI A",   .port = PORT_A, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x0, .phy_idx = 0x0, .vbt_idx = 0x0, },
> +	{ .name = "DDI B",   .port = PORT_B, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x1, .phy_idx = 0x1, .vbt_idx = 0x1, },
> +	/* TODO: use continguous namespace for port once driver is converted */
> +	{ .name = "DDI TC1", .port = PORT_D, .phy_type = PHY_TYPE_DKL,   .ddi_idx = 0x3, .phy_idx = 0x0, .vbt_idx = 0x2, },
> +	{ .name = "DDI TC2", .port = PORT_E, .phy_type = PHY_TYPE_DKL,   .ddi_idx = 0x4, .phy_idx = 0x1, .vbt_idx = 0x3, },
> +	{ .name = "DDI TC3", .port = PORT_F, .phy_type = PHY_TYPE_DKL,   .ddi_idx = 0x5, .phy_idx = 0x2, .vbt_idx = 0x4, },
> +	{ .name = "DDI TC4", .port = PORT_G, .phy_type = PHY_TYPE_DKL,   .ddi_idx = 0x6, .phy_idx = 0x3, .vbt_idx = 0x5, },
> +	{ .name = "DDI TC5", .port = PORT_H, .phy_type = PHY_TYPE_DKL,   .ddi_idx = 0x7, .phy_idx = 0x4, .vbt_idx = 0x6, },
> +	{ .name = "DDI TC6", .port = PORT_I, .phy_type = PHY_TYPE_DKL,   .ddi_idx = 0x8, .phy_idx = 0x5, .vbt_idx = 0x7, },
>  	{ .port = PORT_NONE }
>  };
>  
>  static const struct intel_ddi_port_info ehl_ports[] = {
> -	{ .name = "DDI A", .port = PORT_A },
> -	{ .name = "DDI B", .port = PORT_B },
> -	{ .name = "DDI C", .port = PORT_C },
> -	{ .name = "DDI D", .port = PORT_D },
> +	{ .name = "DDI A", .port = PORT_A, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x0, .phy_idx = 0x0, .vbt_idx = 0x0, },
> +	{ .name = "DDI B", .port = PORT_B, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x1, .phy_idx = 0x1, .vbt_idx = 0x1, },
> +	{ .name = "DDI C", .port = PORT_C, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x2, .phy_idx = 0x2, .vbt_idx = 0x2, },
> +	{ .name = "DDI D", .port = PORT_D, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x3, .phy_idx = 0x0, .vbt_idx = 0x3, },
>  	{ .port = PORT_NONE }
>  };
>  
>  static const struct intel_ddi_port_info icl_ports[] = {
> -	{ .name = "DDI A",   .port = PORT_A },
> -	{ .name = "DDI B",   .port = PORT_B },
> -	{ .name = "DDI TC1", .port = PORT_C },
> -	{ .name = "DDI TC2", .port = PORT_D },
> -	{ .name = "DDI TC3", .port = PORT_E },
> -	{ .name = "DDI TC4", .port = PORT_F },
> +	{ .name = "DDI A",   .port = PORT_A, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x0, .phy_idx = 0x0, .vbt_idx = 0x0,},
> +	{ .name = "DDI B",   .port = PORT_B, .phy_type = PHY_TYPE_COMBO, .ddi_idx = 0x1, .phy_idx = 0x1, .vbt_idx = 0x1,},
> +	{ .name = "DDI TC1", .port = PORT_C, .phy_type = PHY_TYPE_MG,    .ddi_idx = 0x2, .phy_idx = 0x0, .vbt_idx = 0x2,},
> +	{ .name = "DDI TC2", .port = PORT_D, .phy_type = PHY_TYPE_MG,    .ddi_idx = 0x3, .phy_idx = 0x1, .vbt_idx = 0x3,},
> +	{ .name = "DDI TC3", .port = PORT_E, .phy_type = PHY_TYPE_MG,    .ddi_idx = 0x4, .phy_idx = 0x2, .vbt_idx = 0x4,},
> +	{ .name = "DDI TC4", .port = PORT_F, .phy_type = PHY_TYPE_MG,    .ddi_idx = 0x5, .phy_idx = 0x3, .vbt_idx = 0x5,},
>  	{ .port = PORT_NONE }
>  };
>  
>  static const struct intel_ddi_port_info gen9lp_ports[] = {
> -	{ .name = "DDI A", .port = PORT_A },
> -	{ .name = "DDI B", .port = PORT_B },
> -	{ .name = "DDI C", .port = PORT_C },
> +	{ .name = "DDI A", .port = PORT_A, .ddi_idx = 0x0, .phy_idx = 0x0, .vbt_idx = 0x0 },
> +	{ .name = "DDI B", .port = PORT_B, .ddi_idx = 0x1, .phy_idx = 0x1, .vbt_idx = 0x1 },
> +	{ .name = "DDI C", .port = PORT_C, .ddi_idx = 0x2, .phy_idx = 0x2, .vbt_idx = 0x2 },
>  	{ .port = PORT_NONE }
>  };
>  
>  static const struct intel_ddi_port_info ddi_ports[] = {
> -	{ .name = "DDI A", .port = PORT_A },
> -	{ .name = "DDI B", .port = PORT_B },
> -	{ .name = "DDI C", .port = PORT_C },
> -	{ .name = "DDI D", .port = PORT_D },
> -	{ .name = "DDI E", .port = PORT_E },
> -	{ .name = "DDI F", .port = PORT_F },
> +	{ .name = "DDI A", .port = PORT_A, .ddi_idx = 0x0, .phy_idx = 0x0, .vbt_idx = 0x0 },
> +	{ .name = "DDI B", .port = PORT_B, .ddi_idx = 0x1, .phy_idx = 0x1, .vbt_idx = 0x1 },
> +	{ .name = "DDI C", .port = PORT_C, .ddi_idx = 0x2, .phy_idx = 0x2, .vbt_idx = 0x2 },
> +	{ .name = "DDI D", .port = PORT_D, .ddi_idx = 0x3, .phy_idx = 0x3, .vbt_idx = 0x3 },
> +	{ .name = "DDI E", .port = PORT_E, .ddi_idx = 0x4, .phy_idx = 0x4, .vbt_idx = 0x4 },
> +	{ .name = "DDI F", .port = PORT_F, .ddi_idx = 0x5, .phy_idx = 0x5, .vbt_idx = 0x5 },
>  	{ .port = PORT_NONE }
>  };
>  
> diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
> index b7a6d56bac5f..22c999a54ff1 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.h
> +++ b/drivers/gpu/drm/i915/display/intel_display.h
> @@ -311,6 +311,14 @@ enum phy {
>  	I915_MAX_PHYS
>  };
>  
> +enum phy_type {
> +	PHY_TYPE_NONE = 0,
> +
> +	PHY_TYPE_COMBO,
> +	PHY_TYPE_MG,
> +	PHY_TYPE_DKL,
> +};
> +
>  #define phy_name(a) ((a) + 'A')
>  
>  enum phy_fia {
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
> index 92cc7fc66bce..df587219c744 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -1436,6 +1436,10 @@ struct intel_dp_mst_encoder {
>  struct intel_ddi_port_info {
>  	const char *name;
>  	enum port port;
> +	s8 phy_type;

Please make the type enum phy_type.

> +	u8 ddi_idx;
> +	u8 phy_idx;
> +	u8 vbt_idx;
>  };
>  
>  static inline enum dpio_channel

-- 
Jani Nikula, Intel Open Source Graphics Center
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

  reply	other threads:[~2020-07-01 14:58 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-25  0:11 [Intel-gfx] [PATCH v2 0/6] display/ddi: keep register indexes in a table Lucas De Marchi
2020-06-25  0:11 ` [Intel-gfx] [PATCH v2 1/6] drm/i915: move ICL port F hack to intel_bios Lucas De Marchi
2020-06-30 15:54   ` Jani Nikula
2020-06-25  0:11 ` [Intel-gfx] [PATCH v2 2/6] drm/i915/display: fix comment on skl straps Lucas De Marchi
2020-06-30 15:55   ` Jani Nikula
2020-07-01 15:35     ` Lucas De Marchi
2020-07-03 13:24       ` Jani Nikula
2020-06-25  0:11 ` [Intel-gfx] [PATCH v2 3/6] drm/i915/display: start description-based ddi initialization Lucas De Marchi
2020-07-01 14:20   ` Jani Nikula
2020-07-01 15:35     ` Jani Nikula
2020-07-01 15:42       ` Lucas De Marchi
2020-07-01 15:40     ` Lucas De Marchi
2020-06-25  0:11 ` [Intel-gfx] [PATCH v2 4/6] drm/i915/display: add phy, vbt and ddi indexes Lucas De Marchi
2020-07-01 14:58   ` Jani Nikula [this message]
2020-07-01 15:23     ` Jani Nikula
2020-07-01 16:43       ` Lucas De Marchi
2020-07-01 17:04   ` Ville Syrjälä
2020-07-01 17:24     ` Lucas De Marchi
2020-07-02 14:18       ` Ville Syrjälä
2020-06-25  0:11 ` [Intel-gfx] [PATCH v2 5/6] drm/i915/display: use port_info in intel_ddi_init Lucas De Marchi
2020-07-01 15:24   ` Jani Nikula
2020-07-05 20:15   ` kernel test robot
2020-06-25  0:11 ` [Intel-gfx] [PATCH v2 6/6] drm/i915/display: replace port to phy conversions in intel_ddi.c Lucas De Marchi
2020-07-01 15:17   ` Jani Nikula
2020-07-01 16:52     ` Lucas De Marchi
2020-06-26 11:46 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for display/ddi: keep register indexes in a table Patchwork
2020-06-26 11:48 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2020-06-26 12:10 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork

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