[PATCH 5.10 083/120] drm/i915: Extract intel_ddi_power_up_lanes()

Greg Kroah-Hartman
2021-02-08T17:25:57Z

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

commit 425cbd1fce10d4d68188123404d1a302a6939e0a upstream.

Reduce the copypasta by pulling the combo PHY lane
power up stuff into a helper. We'll have a third user soon.

Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210128155948.13678-2-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
(cherry picked from commit 5cdf706fb91a6e4e6af799bb957c4d598e6a067b)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 35 ++++++++++++++++---------------
1 file changed, 19 insertions(+), 16 deletions(-)

--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3274,6 +3274,23 @@ static void intel_ddi_disable_fec_state(
intel_de_posting_read(dev_priv, intel_dp->regs.dp_tp_ctl);
}

+static void intel_ddi_power_up_lanes(struct intel_encoder *encoder,
+ const struct intel_crtc_state *crtc_state)
+{
+ struct drm_i915_private *i915 = to_i915(encoder->base.dev);
+ struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
+ enum phy phy = intel_port_to_phy(i915, encoder->port);
+
+ if (intel_phy_is_combo(i915, phy)) {
+ bool lane_reversal =
+ dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL;
+
+ intel_combo_phy_power_up_lanes(i915, phy, false,
+ crtc_state->lane_count,
+ lane_reversal);
+ }
+}
+
static void tgl_ddi_pre_enable_dp(struct intel_atomic_state *state,
struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
@@ -3367,14 +3384,7 @@ static void tgl_ddi_pre_enable_dp(struct
* 7.f Combo PHY: Configure PORT_CL_DW10 Static Power Down to power up
* the used lanes of the DDI.
*/
- if (intel_phy_is_combo(dev_priv, phy)) {
- bool lane_reversal =
- dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL;
-
- intel_combo_phy_power_up_lanes(dev_priv, phy, false,
- crtc_state->lane_count,
- lane_reversal);
- }
+ intel_ddi_power_up_lanes(encoder, crtc_state);

/*
* 7.g Configure and enable DDI_BUF_CTL
@@ -3458,14 +3468,7 @@ static void hsw_ddi_pre_enable_dp(struct
else
intel_prepare_dp_ddi_buffers(encoder, crtc_state);

- if (intel_phy_is_combo(dev_priv, phy)) {
- bool lane_reversal =
- dig_port->saved_port_bits & DDI_BUF_PORT_REVERSAL;
-
- intel_combo_phy_power_up_lanes(dev_priv, phy, false,
- crtc_state->lane_count,
- lane_reversal);
- }
+ intel_ddi_power_up_lanes(encoder, crtc_state);

intel_ddi_init_dp_buf_reg(encoder);
if (!is_mst)