drm/i915/cx0_phy: Update HDMI TMDS C20 algorithm value

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In the C20 algorithm for HDMI TMDS, certain fields have been updated
in the BSpec to set values for SRAM_GENERIC_<A/B>_TX_CNTX_CFG_1,
such as tx_misc and dac_ctrl_range for Xe2LPD, Xe2HPD and MTL/ARL.
This patch covers fields that need to be set based on the platform type.

Some ARLs SoCs cannot be directly distinguished by their GMD version Id,
Specifically to set value of tx_misc, so PCI Host Bridge IDs are used
for differentiation.

v2:
- Relocate defines and Restructure the code(Jani)

v3:
- Replace conditions with display.platform.<platform> (jani)
- Move host bridge check to new function (Jani)

v4:
- Identify/Replace arrowlake_u as meteorlake_u(Jani)

Bspec:74165,74491
Signed-off-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241217201301.3593054-3-dnyaneshwar.bhadane@intel.com

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This commit is contained in:

Dnyaneshwar Bhadane 2024-12-18 01:43:01 +05:30 • committed by Matt Roper

parent e35ecd95ec

commit 3630a47b70

3 changed files with 57 additions and 8 deletions

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48

drivers/gpu/drm/i915/display/intel_cx0_phy.c

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6

drivers/gpu/drm/i915/display/intel_cx0_phy_regs.h

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11

drivers/gpu/drm/i915/display/intel_display_device.h

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