From: Imre Deak Date: Tue, 6 Jun 2023 17:28:22 +0000 (+0300) Subject: drm/i915/adlp+: Allow DC states along with PW2 only for PWB functionality X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=a6b4229d858ed4db6ad68854bb8a2f7d5ac9f138;p=linux.git drm/i915/adlp+: Allow DC states along with PW2 only for PWB functionality A recent bspec update added a restriction on when DC states can be enabled: [Before enabling DC states:] """ PG2 can be kept enabled only because PGB requires PG2. Do not use PG2 functions, such as type-C DDIs. DMC will dynamically control PG1, PGA, PG2, PGB. """ Accordingly prevent DC states if PW2 (aka PG2) is enabled for any other functionality. Bpsec: 49193 Fixes: 88c487938414 ("drm/i915: Use separate "DC off" power well for ADL-P and DG2") Reported-by: Kai Vehmanen Tested-by: Ambica Pramod Reviewed-by: Uma Shankar Signed-off-by: Imre Deak Link: https://patchwork.freedesktop.org/patch/msgid/20230606172822.1891897-1-imre.deak@intel.com (cherry picked from commit f4e498eb1247d25231198856b57bbae00f403c85) Signed-off-by: Tvrtko Ursulin --- diff --git a/drivers/gpu/drm/i915/display/intel_display_power_map.c b/drivers/gpu/drm/i915/display/intel_display_power_map.c index 1118ee9d224ca..5ad04cd42c158 100644 --- a/drivers/gpu/drm/i915/display/intel_display_power_map.c +++ b/drivers/gpu/drm/i915/display/intel_display_power_map.c @@ -1252,10 +1252,18 @@ I915_DECL_PW_DOMAINS(xelpd_pwdoms_pw_a, POWER_DOMAIN_INIT); #define XELPD_DC_OFF_PORT_POWER_DOMAINS \ + POWER_DOMAIN_PORT_DDI_LANES_C, \ + POWER_DOMAIN_PORT_DDI_LANES_D, \ + POWER_DOMAIN_PORT_DDI_LANES_E, \ POWER_DOMAIN_PORT_DDI_LANES_TC1, \ POWER_DOMAIN_PORT_DDI_LANES_TC2, \ POWER_DOMAIN_PORT_DDI_LANES_TC3, \ POWER_DOMAIN_PORT_DDI_LANES_TC4, \ + POWER_DOMAIN_VGA, \ + POWER_DOMAIN_AUDIO_PLAYBACK, \ + POWER_DOMAIN_AUX_IO_C, \ + POWER_DOMAIN_AUX_IO_D, \ + POWER_DOMAIN_AUX_IO_E, \ POWER_DOMAIN_AUX_C, \ POWER_DOMAIN_AUX_D, \ POWER_DOMAIN_AUX_E, \ @@ -1272,14 +1280,6 @@ I915_DECL_PW_DOMAINS(xelpd_pwdoms_pw_a, XELPD_PW_B_POWER_DOMAINS, \ XELPD_PW_C_POWER_DOMAINS, \ XELPD_PW_D_POWER_DOMAINS, \ - POWER_DOMAIN_PORT_DDI_LANES_C, \ - POWER_DOMAIN_PORT_DDI_LANES_D, \ - POWER_DOMAIN_PORT_DDI_LANES_E, \ - POWER_DOMAIN_VGA, \ - POWER_DOMAIN_AUDIO_PLAYBACK, \ - POWER_DOMAIN_AUX_IO_C, \ - POWER_DOMAIN_AUX_IO_D, \ - POWER_DOMAIN_AUX_IO_E, \ XELPD_DC_OFF_PORT_POWER_DOMAINS I915_DECL_PW_DOMAINS(xelpd_pwdoms_pw_2,