Re: [Intel-gfx] [PATCH 07/21] drm/i915/adl_s: Add PHYs for Alderlake S

Matt Roper
2020-11-20T00:20:16Z

On Tue, Nov 17, 2020 at 10:50:15AM -0800, Aditya Swarup wrote:
> From: Anusha Srivatsa <anusha.srivatsa@intel.com>
>
> Alderlake-S has 5 combo phys, add reg definitions for
> combo phys and update the port to phy helper for ADL-S.
>
> Cc: Lucas De Marchi <lucas.demarchi@intel.com>
> Cc: Jani Nikula <jani.nikula@intel.com>
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Imre Deak <imre.deak@intel.com>
> Cc: Matt Roper <matthew.d.roper@intel.com>
> Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
> Signed-off-by: Aditya Swarup <aditya.swarup@intel.com>
> Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 9 +++++++--
> drivers/gpu/drm/i915/i915_reg.h | 5 ++++-
> 2 files changed, 11 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index e8874cd22abf..848bcd83b15f 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -7343,6 +7343,8 @@ bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy)
> {
> if (phy == PHY_NONE)
> return false;
> + else if (IS_ALDERLAKE_S(dev_priv))
> + return phy <= PHY_E;
> else if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv))
> return phy <= PHY_D;
> else if (IS_JSL_EHL(dev_priv))
> @@ -7355,7 +7357,8 @@ bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy)
>
> bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy)
> {
> - if (IS_DG1(dev_priv) || IS_ROCKETLAKE(dev_priv))
> + if (IS_ALDERLAKE_S(dev_priv) || IS_DG1(dev_priv) ||
> + IS_ROCKETLAKE(dev_priv))
> return false;
> else if (INTEL_GEN(dev_priv) >= 12)
> return phy >= PHY_D && phy <= PHY_I;

Since ICL/TGL are the exception rather than the rule for actually having
Type-C ports, it might make more sense to just flip this around and have

if (TGL)
...
else if (ICL)
...
else
return false;

Matt

> @@ -7367,7 +7370,9 @@ bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy)
>
> enum phy intel_port_to_phy(struct drm_i915_private *i915, enum port port)
> {
> - if ((IS_DG1(i915) || IS_ROCKETLAKE(i915)) && port >= PORT_TC1)
> + if (IS_ALDERLAKE_S(i915) && port >= PORT_TC1)
> + return PHY_B + port - PORT_TC1;
> + else if ((IS_DG1(i915) || IS_ROCKETLAKE(i915)) && port >= PORT_TC1)
> return PHY_C + port - PORT_TC1;
> else if (IS_JSL_EHL(i915) && port == PORT_D)
> return PHY_A;
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 7ea70b7ffcc6..402ea8cd602b 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -1872,10 +1872,13 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
> #define _ICL_COMBOPHY_B 0x6C000
> #define _EHL_COMBOPHY_C 0x160000
> #define _RKL_COMBOPHY_D 0x161000
> +#define _ADL_COMBOPHY_E 0x16B000
> +
> #define _ICL_COMBOPHY(phy) _PICK(phy, _ICL_COMBOPHY_A, \
> _ICL_COMBOPHY_B, \
> _EHL_COMBOPHY_C, \
> - _RKL_COMBOPHY_D)
> + _RKL_COMBOPHY_D, \
> + _ADL_COMBOPHY_E)
>
> /* CNL/ICL Port CL_DW registers */
> #define _ICL_PORT_CL_DW(dw, phy) (_ICL_COMBOPHY(phy) + \
> --
> 2.27.0
>

--
Matt Roper
Graphics Software Engineer
VTT-OSGC Platform Enablement
Intel Corporation
(916) 356-2795