diff options
| author | Imre Deak <imre.deak@intel.com> | 2025-02-14 17:19:53 +0300 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2025-02-14 22:39:05 +0300 |
| commit | dcac00e4d6fdddadde1d5147d1f414f467356077 (patch) | |
| tree | 548aac97c6aaedbc6a45584d6880ee115664eab5 | |
| parent | b2ecdabe46d23db275f94cd7c46ca414a144818b (diff) | |
| download | linux-dcac00e4d6fdddadde1d5147d1f414f467356077.tar.xz | |
drm/i915/ddi: Make all the PORT_WIDTH macros work the same way
Make the PORT_WIDTH macro of the XELPDP_PORT_CTL1 register work the same
way as those used for the DDI_BUF_CTL and the TRANS_DDI_FUNC_CTL
registers: accept a width parameter and convert it to the given
register's encoding.
v2: Robustify macro calls with parens. (Jani)
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250214142001.552916-4-imre.deak@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_ddi.c | 22 |
2 files changed, 4 insertions, 21 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h index 4a3cf08007e3..960f7f778fb8 100644 --- a/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h +++ b/drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h @@ -110,7 +110,8 @@ #define XELPDP_TCSS_POWER_REQUEST REG_BIT(5) #define XELPDP_TCSS_POWER_STATE REG_BIT(4) #define XELPDP_PORT_WIDTH_MASK REG_GENMASK(3, 1) -#define XELPDP_PORT_WIDTH(val) REG_FIELD_PREP(XELPDP_PORT_WIDTH_MASK, val) +#define XELPDP_PORT_WIDTH(width) REG_FIELD_PREP(XELPDP_PORT_WIDTH_MASK, \ + ((width) == 3 ? 4 : (width) - 1)) #define _XELPDP_PORT_BUF_CTL2(idx) _MMIO(_PICK_EVEN_2RANGES(idx, PORT_TC1, \ _XELPDP_PORT_BUF_CTL1_LN0_A, \ diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 550e6ed6eaa1..977798cc73b7 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -2525,23 +2525,6 @@ static void intel_ddi_mso_configure(const struct intel_crtc_state *crtc_state) OVERLAP_PIXELS_MASK, dss1); } -static u8 mtl_get_port_width(u8 lane_count) -{ - switch (lane_count) { - case 1: - return 0; - case 2: - return 1; - case 3: - return 4; - case 4: - return 3; - default: - MISSING_CASE(lane_count); - return 4; - } -} - static void mtl_ddi_enable_d2d(struct intel_encoder *encoder) { @@ -2575,7 +2558,7 @@ static void mtl_port_buf_ctl_program(struct intel_encoder *encoder, enum port port = encoder->port; u32 val = 0; - val |= XELPDP_PORT_WIDTH(mtl_get_port_width(crtc_state->lane_count)); + val |= XELPDP_PORT_WIDTH(crtc_state->lane_count); if (intel_dp_is_uhbr(crtc_state)) val |= XELPDP_PORT_BUF_PORT_DATA_40BIT; @@ -3496,10 +3479,9 @@ static void intel_ddi_enable_hdmi(struct intel_atomic_state *state, buf_ctl |= DDI_A_4_LANES; if (DISPLAY_VER(dev_priv) >= 14) { - u8 lane_count = mtl_get_port_width(crtc_state->lane_count); u32 port_buf = 0; - port_buf |= XELPDP_PORT_WIDTH(lane_count); + port_buf |= XELPDP_PORT_WIDTH(crtc_state->lane_count); if (dig_port->lane_reversal) port_buf |= XELPDP_PORT_REVERSAL; |