diff options
| author | Mark Brown <broonie@kernel.org> | 2021-10-18 13:50:42 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-10-18 13:50:42 +0100 |
| commit | b8f3b564937c1f3529bc4897cc41c5d95d2cdbe9 (patch) | |
| tree | b71ed4906bbe2ca96d68dbf1d6d6f0fe2676f1de /drivers/gpu/drm/i915/display/intel_bios.c | |
| parent | 4e52cb9e2c22c9d860910794c82461064baadd9f (diff) | |
| parent | 519d81956ee277b4419c723adfb154603c2565ba (diff) | |
Merge tag 'v5.15-rc6' into asoc-5.16
Linux 5.15-rc6
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_bios.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_bios.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index e86e6ed2d3bf..fd71346aac7b 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -451,13 +451,23 @@ parse_lfp_backlight(struct drm_i915_private *i915, } i915->vbt.backlight.type = INTEL_BACKLIGHT_DISPLAY_DDI; - if (bdb->version >= 191 && - get_blocksize(backlight_data) >= sizeof(*backlight_data)) { - const struct lfp_backlight_control_method *method; + if (bdb->version >= 191) { + size_t exp_size; - method = &backlight_data->backlight_control[panel_type]; - i915->vbt.backlight.type = method->type; - i915->vbt.backlight.controller = method->controller; + if (bdb->version >= 236) + exp_size = sizeof(struct bdb_lfp_backlight_data); + else if (bdb->version >= 234) + exp_size = EXP_BDB_LFP_BL_DATA_SIZE_REV_234; + else + exp_size = EXP_BDB_LFP_BL_DATA_SIZE_REV_191; + + if (get_blocksize(backlight_data) >= exp_size) { + const struct lfp_backlight_control_method *method; + + method = &backlight_data->backlight_control[panel_type]; + i915->vbt.backlight.type = method->type; + i915->vbt.backlight.controller = method->controller; + } } i915->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz; |