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authorDonghwa Lee <dh09.lee@samsung.com>2012-07-02 01:16:13 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-09-01 14:58:24 +0200
commit6fff52b93a1abf3f3fdefd8ccc7dabf6eb4f2ca3 (patch)
treeff76c998f215c0d042d349b9a813b19fe75a7c15 /arch
parenta29c832263be57d218581ba4b1cb5e2820338383 (diff)
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video: support exynos pwm backlight driver
This patch support exynos pwm backlight driver. It can control backlight power and brightness by using pwm. Signed-off-by: Donghwa Lee <dh09.lee@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/include/asm/arch-exynos/pwm_backlight.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-exynos/pwm_backlight.h b/arch/arm/include/asm/arch-exynos/pwm_backlight.h
new file mode 100644
index 0000000..368ffc5
--- /dev/null
+++ b/arch/arm/include/asm/arch-exynos/pwm_backlight.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * Author: Donghwa Lee <dh09.lee@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _PWM_BACKLIGHT_H_
+#define _PWM_BACKLIGHT_H_
+
+struct pwm_backlight_data {
+ int pwm_id;
+ int period;
+ int max_brightness;
+ int brightness;
+};
+
+extern int exynos_pwm_backlight_init(struct pwm_backlight_data *pd);
+
+#endif /* _PWM_BACKLIGHT_H_ */