diff options
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.26/1013-gta01-backlight.patch.patch')
| -rwxr-xr-x | target/linux/s3c24xx/patches-2.6.26/1013-gta01-backlight.patch.patch | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.26/1013-gta01-backlight.patch.patch b/target/linux/s3c24xx/patches-2.6.26/1013-gta01-backlight.patch.patch deleted file mode 100755 index df13abd692..0000000000 --- a/target/linux/s3c24xx/patches-2.6.26/1013-gta01-backlight.patch.patch +++ /dev/null @@ -1,308 +0,0 @@ -From deee418974cd5cc3b1aa9b1329d91b50f8bb7baf Mon Sep 17 00:00:00 2001 -From: mokopatches <mokopatches@openmoko.org> -Date: Wed, 16 Jul 2008 14:44:49 +0100 -Subject: [PATCH] gta01-backlight.patch - This is a backlight driver for the FIC/OpenMoko Neo1973 GTA01 GSM Phone - -Signed-off-by: Harald Welte <laforge@openmoko.org> ---- - drivers/video/backlight/Kconfig | 7 + - drivers/video/backlight/Makefile | 1 + - drivers/video/backlight/gta01_bl.c | 255 ++++++++++++++++++++++++++++++++++++ - 3 files changed, 263 insertions(+), 0 deletions(-) - create mode 100644 drivers/video/backlight/gta01_bl.c - -diff --git a/drivers/video/backlight/Kconfig b/drivers/video/backlight/Kconfig -index dcd8073..475db76 100644 ---- a/drivers/video/backlight/Kconfig -+++ b/drivers/video/backlight/Kconfig -@@ -89,6 +89,13 @@ config BACKLIGHT_OMAP1 - the PWL module of OMAP1 processors. Say Y if your board - uses this hardware. - -+config BACKLIGHT_GTA01 -+ tristate "FIC Neo1973 GTA01 Backlight Driver" -+ depends on BACKLIGHT_CLASS_DEVICE && MACH_NEO1973_GTA01 -+ default y -+ help -+ If you have a FIC Neo1973 GTA01, say y to enable the backlight driver. -+ - config BACKLIGHT_HP680 - tristate "HP Jornada 680 Backlight Driver" - depends on BACKLIGHT_CLASS_DEVICE && SH_HP6XX -diff --git a/drivers/video/backlight/Makefile b/drivers/video/backlight/Makefile -index 33f6c7c..aee9f46 100644 ---- a/drivers/video/backlight/Makefile -+++ b/drivers/video/backlight/Makefile -@@ -5,6 +5,7 @@ obj-$(CONFIG_LCD_LTV350QV) += ltv350qv.o - - obj-$(CONFIG_BACKLIGHT_CLASS_DEVICE) += backlight.o - obj-$(CONFIG_BACKLIGHT_CORGI) += corgi_bl.o -+obj-$(CONFIG_BACKLIGHT_GTA01) += gta01_bl.o - obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o - obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o - obj-$(CONFIG_BACKLIGHT_OMAP1) += omap1_bl.o -diff --git a/drivers/video/backlight/gta01_bl.c b/drivers/video/backlight/gta01_bl.c -new file mode 100644 -index 0000000..c2bf0c9 ---- /dev/null -+++ b/drivers/video/backlight/gta01_bl.c -@@ -0,0 +1,255 @@ -+/* -+ * Backlight Driver for FIC GTA01 (Neo1973) GSM Phone -+ * -+ * Copyright (C) 2006-2007 by OpenMoko, Inc. -+ * Author: Harald Welte <laforge@openmoko.org> -+ * All rights reserved. -+ * -+ * based on corgi_cl.c, Copyright (c) 2004-2006 Richard Purdie -+ * -+ * 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, version 2. -+ * -+ * 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 -+ * -+ * Javi Roman <javiroman@kernel-labs.org>: -+ * implement PWM, instead of simple on/off switching -+ * -+ */ -+ -+#include <linux/module.h> -+#include <linux/kernel.h> -+#include <linux/init.h> -+#include <linux/platform_device.h> -+#include <linux/mutex.h> -+#include <linux/fb.h> -+#include <linux/backlight.h> -+#include <linux/clk.h> -+ -+#include <asm/arch/hardware.h> -+#include <asm/arch/gta01.h> -+#include <asm/arch/pwm.h> -+ -+#include <asm/plat-s3c/regs-timer.h> -+ -+static struct backlight_properties gta01bl_prop; -+static struct backlight_device *gta01_backlight_device; -+static struct gta01bl_machinfo *bl_machinfo; -+ -+static unsigned long gta01bl_flags; -+ -+struct gta01bl_data { -+ int intensity; -+ struct mutex mutex; -+ struct clk *clk; -+ struct s3c2410_pwm pwm; -+}; -+ -+static struct gta01bl_data gta01bl; -+ -+#define GTA01BL_SUSPENDED 0x01 -+#define GTA01BL_BATTLOW 0x02 -+ -+/* On the GTA01 / Neo1973, we use a 50 or 66MHz PCLK, which gives -+ * us a 6.25..8.25MHz DIV8 clock, which is further divided by a -+ * prescaler of 4, resulting in a 1.56..2.06MHz tick. This results in a -+ * minimum frequency of 24..31Hz. At 400Hz, we need to set the count -+ * to something like 3906..5156, providing us a way sufficient resolution -+ * for display brightness adjustment. */ -+#define GTA01BL_COUNTER 5156 -+ -+static int gta01bl_send_intensity(struct backlight_device *bd) -+{ -+ int intensity = bd->props.brightness; -+ -+ if (bd->props.power != FB_BLANK_UNBLANK) -+ intensity = 0; -+ if (bd->props.fb_blank != FB_BLANK_UNBLANK) -+ intensity = 0; -+ if (gta01bl_flags & GTA01BL_SUSPENDED) -+ intensity = 0; -+ if (gta01bl_flags & GTA01BL_BATTLOW) -+ intensity &= bl_machinfo->limit_mask; -+ -+ mutex_lock(>a01bl.mutex); -+#ifdef GTA01_BACKLIGHT_ONOFF_ONLY -+ if (intensity) -+ s3c2410_gpio_setpin(GTA01_GPIO_BACKLIGHT, 1); -+ else -+ s3c2410_gpio_setpin(GTA01_GPIO_BACKLIGHT, 0); -+#else -+ if (intensity == bd->props.max_brightness) { -+ s3c2410_gpio_setpin(GTA01_GPIO_BACKLIGHT, 1); -+ s3c2410_gpio_cfgpin(GTA01_GPIO_BACKLIGHT, S3C2410_GPIO_OUTPUT); -+ } else { -+ s3c2410_pwm_duty_cycle(intensity & 0xffff, >a01bl.pwm); -+ s3c2410_gpio_cfgpin(GTA01_GPIO_BACKLIGHT, S3C2410_GPB0_TOUT0); -+ } -+#endif -+ mutex_unlock(>a01bl.mutex); -+ -+ gta01bl.intensity = intensity; -+ return 0; -+} -+ -+static int gta01bl_init_hw(void) -+{ -+ int rc; -+ -+ rc = s3c2410_pwm_init(>a01bl.pwm); -+ if (rc) -+ return rc; -+ -+ gta01bl.pwm.timerid = PWM0; -+ gta01bl.pwm.prescaler = (4 - 1); -+ gta01bl.pwm.divider = S3C2410_TCFG1_MUX0_DIV8; -+ gta01bl.pwm.counter = GTA01BL_COUNTER; -+ gta01bl.pwm.comparer = gta01bl.pwm.counter; -+ -+ rc = s3c2410_pwm_enable(>a01bl.pwm); -+ if (rc) -+ return rc; -+ -+ s3c2410_pwm_start(>a01bl.pwm); -+ -+ gta01bl_prop.max_brightness = gta01bl.pwm.counter; -+ -+ return 0; -+} -+ -+#ifdef CONFIG_PM -+static int gta01bl_suspend(struct platform_device *dev, pm_message_t state) -+{ -+ gta01bl_flags |= GTA01BL_SUSPENDED; -+ gta01bl_send_intensity(gta01_backlight_device); -+ return 0; -+} -+ -+static int gta01bl_resume(struct platform_device *dev) -+{ -+ mutex_lock(>a01bl.mutex); -+ gta01bl_init_hw(); -+ mutex_unlock(>a01bl.mutex); -+ -+ gta01bl_flags &= ~GTA01BL_SUSPENDED; -+ gta01bl_send_intensity(gta01_backlight_device); -+ return 0; -+} -+#else -+#define gta01bl_suspend NULL -+#define gta01bl_resume NULL -+#endif -+ -+static int gta01bl_get_intensity(struct backlight_device *bd) -+{ -+ return gta01bl.intensity; -+} -+ -+static int gta01bl_set_intensity(struct backlight_device *bd) -+{ -+ gta01bl_send_intensity(gta01_backlight_device); -+ return 0; -+} -+ -+/* -+ * Called when the battery is low to limit the backlight intensity. -+ * If limit==0 clear any limit, otherwise limit the intensity -+ */ -+void gta01bl_limit_intensity(int limit) -+{ -+ if (limit) -+ gta01bl_flags |= GTA01BL_BATTLOW; -+ else -+ gta01bl_flags &= ~GTA01BL_BATTLOW; -+ gta01bl_send_intensity(gta01_backlight_device); -+} -+EXPORT_SYMBOL_GPL(gta01bl_limit_intensity); -+ -+ -+static struct backlight_ops gta01bl_ops = { -+ .get_brightness = gta01bl_get_intensity, -+ .update_status = gta01bl_set_intensity, -+}; -+ -+static int __init gta01bl_probe(struct platform_device *pdev) -+{ -+ struct gta01bl_machinfo *machinfo = pdev->dev.platform_data; -+ int rc; -+ -+#ifdef GTA01_BACKLIGHT_ONOFF_ONLY -+ s3c2410_gpio_cfgpin(GTA01_GPIO_BACKLIGHT, S3C2410_GPIO_OUTPUT); -+ gta01bl_prop.max_brightness = 1; -+#else -+ rc = gta01bl_init_hw(); -+ if (rc < 0) -+ return rc; -+#endif -+ mutex_init(>a01bl.mutex); -+ -+ if (!machinfo->limit_mask) -+ machinfo->limit_mask = -1; -+ -+ gta01_backlight_device = backlight_device_register("gta01-bl", -+ &pdev->dev, NULL, -+ >a01bl_ops); -+ if (IS_ERR(gta01_backlight_device)) -+ return PTR_ERR(gta01_backlight_device); -+ -+ gta01bl_prop.power = FB_BLANK_UNBLANK; -+ gta01bl_prop.brightness = gta01bl_prop.max_brightness; -+ memcpy(>a01_backlight_device->props, -+ >a01bl_prop, sizeof(gta01bl_prop)); -+ gta01bl_send_intensity(gta01_backlight_device); -+ -+ return 0; -+} -+ -+static int gta01bl_remove(struct platform_device *dev) -+{ -+#ifndef GTA01_BACKLIGHT_ONOFF_ONLY -+ s3c2410_pwm_disable(>a01bl.pwm); -+#endif -+ backlight_device_unregister(gta01_backlight_device); -+ mutex_destroy(>a01bl.mutex); -+ -+ s3c2410_gpio_cfgpin(GTA01_GPIO_BACKLIGHT, S3C2410_GPIO_OUTPUT); -+ s3c2410_gpio_setpin(GTA01_GPIO_BACKLIGHT, 1); -+ -+ return 0; -+} -+ -+static struct platform_driver gta01bl_driver = { -+ .probe = gta01bl_probe, -+ .remove = gta01bl_remove, -+ .suspend = gta01bl_suspend, -+ .resume = gta01bl_resume, -+ .driver = { -+ .name = "gta01-bl", -+ }, -+}; -+ -+static int __init gta01bl_init(void) -+{ -+ return platform_driver_register(>a01bl_driver); -+} -+ -+static void __exit gta01bl_exit(void) -+{ -+ platform_driver_unregister(>a01bl_driver); -+} -+ -+module_init(gta01bl_init); -+module_exit(gta01bl_exit); -+ -+MODULE_DESCRIPTION("FIC GTA01 (Neo1973) Backlight Driver"); -+MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>"); -+MODULE_LICENSE("GPL"); --- -1.5.6.3 - |