diff options
| author | Mika Kahola <mika.kahola@intel.com> | 2023-04-28 12:54:30 +0300 |
|---|---|---|
| committer | Radhakrishna Sripada <radhakrishna.sripada@intel.com> | 2023-04-29 00:52:02 +0300 |
| commit | 6f0423b06a0cd55133bafb7a69fd2ac1ff7a6750 (patch) | |
| tree | e0adcf0c298d7ca85b5357a34b56bdee53443449 /drivers/gpu/drm/i915/display/intel_cx0_phy.c | |
| parent | c0f3faaf936b67e124e9159fb1223a689cf9e15e (diff) | |
| download | linux-6f0423b06a0cd55133bafb7a69fd2ac1ff7a6750.tar.xz | |
drm/i915/mtl: Power up TCSS
Add register writes to enable powering up Type-C subsystem i.e. TCSS.
For MeteorLake we need to request TCSS to power up and check the TCSS
power state after 500 us.
In addition, for PICA we need to set/clear the Type-C PHY ownnership
bit when Type-C device is connected/disconnected.
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230428095433.4109054-11-mika.kahola@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_cx0_phy.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_cx0_phy.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c index 7f7b63ae7651..d94127e7448b 100644 --- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c @@ -2893,6 +2893,25 @@ void intel_mtl_pll_disable(struct intel_encoder *encoder) intel_cx0pll_disable(encoder); } +enum icl_port_dpll_id +intel_mtl_port_pll_type(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *i915 = to_i915(encoder->base.dev); + /* + * TODO: Determine the PLL type from the SW state, once MTL PLL + * handling is done via the standard shared DPLL framework. + */ + u32 val = intel_de_read(i915, XELPDP_PORT_CLOCK_CTL(encoder->port)); + u32 clock = REG_FIELD_GET(XELPDP_DDI_CLOCK_SELECT_MASK, val); + + if (clock == XELPDP_DDI_CLOCK_SELECT_MAXPCLK || + clock == XELPDP_DDI_CLOCK_SELECT_DIV18CLK) + return ICL_PORT_DPLL_MG_PHY; + else + return ICL_PORT_DPLL_DEFAULT; +} + void intel_c10pll_state_verify(struct intel_atomic_state *state, struct intel_crtc_state *new_crtc_state) { |