debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/drivers/video/backlight/cr_bllcd.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Copyright (c) Intel Corp. 2007.
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  * All Rights Reserved.
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@@ -6,21 +7,6 @@
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  * develop this driver.
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  *
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  * This file is part of the Carillo Ranch video subsystem driver.
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- * The Carillo Ranch video subsystem driver is free software;
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- * you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * The Carillo Ranch video subsystem driver is distributed
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- * in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this driver; if not, write to the Free Software
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- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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  *
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  * Authors:
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  *   Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
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@@ -73,26 +59,18 @@
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59
 
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 static int cr_backlight_set_intensity(struct backlight_device *bd)
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 {
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-	int intensity = bd->props.brightness;
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 	u32 addr = gpio_bar + CRVML_PANEL_PORT;
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 	u32 cur = inl(addr);
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64
 
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-	if (bd->props.power == FB_BLANK_UNBLANK)
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-		intensity = FB_BLANK_UNBLANK;
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-	if (bd->props.fb_blank == FB_BLANK_UNBLANK)
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-		intensity = FB_BLANK_UNBLANK;
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-	if (bd->props.power == FB_BLANK_POWERDOWN)
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-		intensity = FB_BLANK_POWERDOWN;
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-	if (bd->props.fb_blank == FB_BLANK_POWERDOWN)
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-		intensity = FB_BLANK_POWERDOWN;
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-
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-	if (intensity == FB_BLANK_UNBLANK) { /* FULL ON */
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-		cur &= ~CRVML_BACKLIGHT_OFF;
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-		outl(cur, addr);
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-	} else if (intensity == FB_BLANK_POWERDOWN) { /* OFF */
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+	if (backlight_get_brightness(bd) == 0) {
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+		/* OFF */
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 		cur |= CRVML_BACKLIGHT_OFF;
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 		outl(cur, addr);
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-	} /* anything else, don't bother */
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+	} else {
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+		/* FULL ON */
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+		cur &= ~CRVML_BACKLIGHT_OFF;
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+		outl(cur, addr);
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+	}
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74
 
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 	return 0;
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 }
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@@ -104,9 +82,9 @@
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 	u8 intensity;
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 	if (cur & CRVML_BACKLIGHT_OFF)
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-		intensity = FB_BLANK_POWERDOWN;
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+		intensity = 0;
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 	else
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-		intensity = FB_BLANK_UNBLANK;
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+		intensity = 1;
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88
 
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 	return intensity;
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 }