From 9025452366e9a86f2e11292865d98430341005d1 Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Tue, 6 Jan 2015 14:48:15 -0500 Subject: [PATCH] Revert "drm/i915: Parsing LFP brightness control from VBT" MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This reverts commit 371abae844ede392066bfc21202b2e40f4a654d1. This data seems unreliable and causing many issues and blocking other teams and feature implementation. Safest way is to revert that for now. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88081 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=88039 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87671 Cc: Vandana Kannan Cc: Deepak M Cc: Jani Nikula Cc: Ben Widawsky Cc: Kristian Høgsberg Signed-off-by: Rodrigo Vivi Reviewed-by: Jani Nikula Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.h | 1 - drivers/gpu/drm/i915/intel_bios.c | 20 -------------------- drivers/gpu/drm/i915/intel_bios.h | 11 ----------- 3 files changed, 32 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 387eb2d4a8ab..da52f9cdc5df 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1408,7 +1408,6 @@ struct intel_vbt_data { bool present; bool active_low_pwm; u8 min_brightness; /* min_brightness/255 of max */ - u8 controller; /* brightness controller number */ } backlight; /* MIPI DSI */ diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c index 65b1fbc5eb57..3f178258d9f9 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -314,7 +314,6 @@ parse_lfp_backlight(struct drm_i915_private *dev_priv, struct bdb_header *bdb) { const struct bdb_lfp_backlight_data *backlight_data; const struct bdb_lfp_backlight_data_entry *entry; - const struct bdb_lfp_backlight_control_data *bl_ctrl_data; backlight_data = find_section(bdb, BDB_LVDS_BACKLIGHT); if (!backlight_data) @@ -327,7 +326,6 @@ parse_lfp_backlight(struct drm_i915_private *dev_priv, struct bdb_header *bdb) } entry = &backlight_data->data[panel_type]; - bl_ctrl_data = &backlight_data->blc_ctl[panel_type]; dev_priv->vbt.backlight.present = entry->type == BDB_BACKLIGHT_TYPE_PWM; if (!dev_priv->vbt.backlight.present) { @@ -339,30 +337,12 @@ parse_lfp_backlight(struct drm_i915_private *dev_priv, struct bdb_header *bdb) dev_priv->vbt.backlight.pwm_freq_hz = entry->pwm_freq_hz; dev_priv->vbt.backlight.active_low_pwm = entry->active_low_pwm; dev_priv->vbt.backlight.min_brightness = entry->min_brightness; - - dev_priv->vbt.backlight.controller = 0; - if (bdb->version >= 191) { - dev_priv->vbt.backlight.present = - bl_ctrl_data->pin == BLC_CONTROL_PIN_DDI; - if (!dev_priv->vbt.backlight.present) { - DRM_DEBUG_KMS("BL control pin is not DDI (pin %u)\n", - bl_ctrl_data->pin); - return; - } - if (bl_ctrl_data->controller == 1) - dev_priv->vbt.backlight.controller = - bl_ctrl_data->controller; - } - DRM_DEBUG_KMS("VBT backlight PWM modulation frequency %u Hz, " "active %s, min brightness %u, level %u\n", dev_priv->vbt.backlight.pwm_freq_hz, dev_priv->vbt.backlight.active_low_pwm ? "low" : "high", dev_priv->vbt.backlight.min_brightness, backlight_data->level[panel_type]); - - DRM_DEBUG_KMS("VBT BL controller %u\n", - dev_priv->vbt.backlight.controller); } /* Try to find sdvo panel data */ diff --git a/drivers/gpu/drm/i915/intel_bios.h b/drivers/gpu/drm/i915/intel_bios.h index 9a7202e5caf4..a6a8710f665f 100644 --- a/drivers/gpu/drm/i915/intel_bios.h +++ b/drivers/gpu/drm/i915/intel_bios.h @@ -402,21 +402,10 @@ struct bdb_lfp_backlight_data_entry { u8 obsolete3; } __packed; -#define BLC_CONTROL_PIN_PMIC 0 -#define BLC_CONTROL_PIN_LPSS_PWM 1 -#define BLC_CONTROL_PIN_DDI 2 -#define BLC_CONTROL_PIN_CABC 3 - -struct bdb_lfp_backlight_control_data { - u8 controller:4; - u8 pin:4; -} __packed; - struct bdb_lfp_backlight_data { u8 entry_size; struct bdb_lfp_backlight_data_entry data[16]; u8 level[16]; - struct bdb_lfp_backlight_control_data blc_ctl[16]; } __packed; struct aimdb_header { -- 2.20.1