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Revert "drm/i915: Parsing LFP brightness control from VBT"

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This reverts commit 371abae844.

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 <vandana.kannan@intel.com>
Cc: Deepak M <m.deepak@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Kristian Høgsberg <hoegsberg@gmail.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rodrigo Vivi
2015-01-06 14:48:15 -05:00
committed by Daniel Vetter
parent 1816f92363
commit 9025452366
3 changed files with 0 additions and 32 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/i915/i915_drv.h
-1
View File
@@ -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 */
drivers/gpu/drm/i915/intel_bios.c
-20
View File
@@ -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 */
drivers/gpu/drm/i915/intel_bios.h
-11
View File
@@ -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 {