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video: support exynos pwm backlight driver

PATCH New Donghwa Lee 1 participant 1 message Jul 2, 2012

Subsystems (3)
Arm (32-bit) Framebuffer layer Arm Samsung Exynos
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Donghwa Lee

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PATCH 8/8 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 <[email protected]>
Signed-off-by Kyungmin Park <[email protected]>
---
 arch/arm/include/asm/arch-exynos/pwm_backlight.h |   34 +++++++++++++
 drivers/video/Makefile                           |    1 +
 drivers/video/exynos_pwm_bl.c                    |   57 ++++++++++++++++++++++
 3 files changed, 92 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/include/asm/arch-exynos/pwm_backlight.h
 create mode 100644 drivers/video/exynos_pwm_bl.c
arch/arm/include/asm/arch-exynos/pwm_backlight.h new file +34 -0
new file mode 100644
index 0000000..368ffc5
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2012 Samsung Electronics
+ *
+ * Author: Donghwa Lee <[email protected]>
+ *
+ * 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_ */
drivers/video/Makefile +1 -0
index a7530a4..4a0a5b4 100644
@@ -33,6 +33,7 @@ COBJS-$(CONFIG_EXYNOS_DP) += exynos_dp.o exynos_dp_lowlevel.o
 COBJS-$(CONFIG_EXYNOS_FB) += exynos_fb.o exynos_fimd.o
 COBJS-$(CONFIG_EXYNOS_MIPI_DSIM) += exynos_mipi_dsi.o exynos_mipi_dsi_common.o \
 				exynos_mipi_dsi_lowlevel.o
+COBJS-$(CONFIG_EXYNOS_PWM_BL) += exynos_pwm_bl.o
 COBJS-$(CONFIG_FSL_DIU_FB) += fsl_diu_fb.o videomodes.o
 COBJS-$(CONFIG_S6E8AX0) += s6e8ax0.o
 COBJS-$(CONFIG_S6E63D6) += s6e63d6.o
drivers/video/exynos_pwm_bl.c new file +57 -0

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