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| author | Matt Roper <matthew.d.roper@intel.com> | 2020-05-04 15:52:15 -0700 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2020-05-20 08:35:22 -0700 |
| commit | 01f953e78e23d2c48fab96bc6f246af0c33464e8 (patch) | |
| tree | 99d871dc77a0849b5c8b00ccf153b86a072804ed /drivers/gpu/drm/i915/display/intel_combo_phy.c | |
| parent | 93e2323b5c85a2b7ac4260d720de26ca5d5ad796 (diff) | |
| download | linux-01f953e78e23d2c48fab96bc6f246af0c33464e8.tar.gz linux-01f953e78e23d2c48fab96bc6f246af0c33464e8.tar.bz2 linux-01f953e78e23d2c48fab96bc6f246af0c33464e8.zip | |
drm/i915/rkl: RKL only uses PHY_MISC for PHY's A and B
Since the number of platforms with this restriction are growing, let's
separate out the platform logic into a has_phy_misc() function.
Bspec: 50107
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200504225227.464666-11-matthew.d.roper@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_combo_phy.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_combo_phy.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_combo_phy.c b/drivers/gpu/drm/i915/display/intel_combo_phy.c index 9ff05ec12115..43d8784f6fa0 100644 --- a/drivers/gpu/drm/i915/display/intel_combo_phy.c +++ b/drivers/gpu/drm/i915/display/intel_combo_phy.c @@ -181,11 +181,25 @@ static void cnl_combo_phys_uninit(struct drm_i915_private *dev_priv) intel_de_write(dev_priv, CHICKEN_MISC_2, val); } +static bool has_phy_misc(struct drm_i915_private *i915, enum phy phy) +{ + /* + * Some platforms only expect PHY_MISC to be programmed for PHY-A and + * PHY-B and may not even have instances of the register for the + * other combo PHY's. + */ + if (IS_ELKHARTLAKE(i915) || + IS_ROCKETLAKE(i915)) + return phy < PHY_C; + + return true; +} + static bool icl_combo_phy_enabled(struct drm_i915_private *dev_priv, enum phy phy) { /* The PHY C added by EHL has no PHY_MISC register */ - if (IS_ELKHARTLAKE(dev_priv) && phy == PHY_C) + if (!has_phy_misc(dev_priv, phy)) return intel_de_read(dev_priv, ICL_PORT_COMP_DW0(phy)) & COMP_INIT; else return !(intel_de_read(dev_priv, ICL_PHY_MISC(phy)) & @@ -317,12 +331,7 @@ static void icl_combo_phys_init(struct drm_i915_private *dev_priv) continue; } - /* - * Although EHL adds a combo PHY C, there's no PHY_MISC - * register for it and no need to program the - * DE_IO_COMP_PWR_DOWN setting on PHY C. - */ - if (IS_ELKHARTLAKE(dev_priv) && phy == PHY_C) + if (!has_phy_misc(dev_priv, phy)) goto skip_phy_misc; /* @@ -376,12 +385,7 @@ static void icl_combo_phys_uninit(struct drm_i915_private *dev_priv) "Combo PHY %c HW state changed unexpectedly\n", phy_name(phy)); - /* - * Although EHL adds a combo PHY C, there's no PHY_MISC - * register for it and no need to program the - * DE_IO_COMP_PWR_DOWN setting on PHY C. - */ - if (IS_ELKHARTLAKE(dev_priv) && phy == PHY_C) + if (!has_phy_misc(dev_priv, phy)) goto skip_phy_misc; val = intel_de_read(dev_priv, ICL_PHY_MISC(phy)); |