Commit 9659c1af authored by Clint Taylor's avatar Clint Taylor Committed by Jani Nikula

drm/i915/icl: combo port vswing programming changes per BSPEC

In August 2018 the BSPEC changed the ICL port programming sequence to
closely resemble earlier gen programming sequence. Restrict combo phy to
HBR max rate unless eDP panel is connected to port.

v2: remove debug code that Imre found
v3: simplify translation table if-else
v4: edp translation table now based on link rate and low_swing
v5: Misc review comments + r-b
BSpec: 21257
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: default avatarImre Deak <imre.deak@intel.com>
Signed-off-by: default avatarClint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: default avatarImre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1545084827-5776-1-git-send-email-clinton.a.taylor@intel.com
(cherry picked from commit b265a2a6)
Signed-off-by: default avatarJani Nikula <jani.nikula@intel.com>
parent d1393711
......@@ -1866,6 +1866,10 @@ enum i915_power_well_id {
#define CNL_PORT_TX_DW7_GRP(port) _MMIO(_CNL_PORT_TX_DW_GRP((port), 7))
#define CNL_PORT_TX_DW7_LN0(port) _MMIO(_CNL_PORT_TX_DW_LN0((port), 7))
#define ICL_PORT_TX_DW7_AUX(port) _MMIO(_ICL_PORT_TX_DW_AUX(7, port))
#define ICL_PORT_TX_DW7_GRP(port) _MMIO(_ICL_PORT_TX_DW_GRP(7, port))
#define ICL_PORT_TX_DW7_LN0(port) _MMIO(_ICL_PORT_TX_DW_LN(7, 0, port))
#define ICL_PORT_TX_DW7_LN(port, ln) _MMIO(_ICL_PORT_TX_DW_LN(7, ln, port))
#define N_SCALAR(x) ((x) << 24)
#define N_SCALAR_MASK (0x7F << 24)
......
This diff is collapsed.
......@@ -304,9 +304,11 @@ static int cnl_max_source_rate(struct intel_dp *intel_dp)
static int icl_max_source_rate(struct intel_dp *intel_dp)
{
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
enum port port = dig_port->base.port;
if (port == PORT_B)
if (intel_port_is_combophy(dev_priv, port) &&
!intel_dp_is_edp(intel_dp))
return 540000;
return 810000;
......
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