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drm/i915/bios: add DP max link rate to VBT child device struct

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Update VBT defs to reflect revision 216. While at it, default the
expected child device struct size to sizeof the size rather than a
hardcoded value.

v2: Fix bit order (David)

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180118153310.32437-1-jani.nikula@intel.com
(cherry picked from commit c4fb60b9ab)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Jani Nikula 2018-01-18 17:33:10 +02:00 committed by Rodrigo Vivi
parent 6e3322c226
commit 6dd3104e78
2 changed files with 7 additions and 3 deletions
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8
drivers/gpu/drm/i915/intel_bios.c
View file

@ -1329,11 +1329,13 @@ parse_general_definitions(struct drm_i915_private *dev_priv,
expected_size = LEGACY_CHILD_DEVICE_CONFIG_SIZE;
} else if (bdb->version == 195) {
expected_size = 37;
} else if (bdb->version <= 197) {
} else if (bdb->version <= 215) {
expected_size = 38;
} else if (bdb->version <= 216) {
expected_size = 39;
} else {
expected_size = 38;
BUILD_BUG_ON(sizeof(*child) < 38);
expected_size = sizeof(*child);
BUILD_BUG_ON(sizeof(*child) < 39);
DRM_DEBUG_DRIVER("Expected child device config size for VBT version %u not known; assuming %u\n",
bdb->version, expected_size);
}

2
drivers/gpu/drm/i915/intel_vbt_defs.h
View file

@ -412,6 +412,8 @@ struct child_device_config {
u16 dp_gpio_pin_num; /* 195 */
u8 dp_iboost_level:4; /* 196 */
u8 hdmi_iboost_level:4; /* 196 */
u8 dp_max_link_rate:2; /* 216 CNL+ */
u8 dp_max_link_rate_reserved:6; /* 216 */
} __packed;
struct bdb_general_definitions {