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|
#
# Patch managed by http://www.mn-logistik.de/unsupported/pxa250/patcher
#
Index: linux-2.6.24/drivers/video/backlight/Kconfig
===================================================================
--- linux-2.6.24.orig/drivers/video/backlight/Kconfig
+++ linux-2.6.24/drivers/video/backlight/Kconfig
@@ -90,3 +90,12 @@
help
If you have a Intel LE80578 (Carillo Ranch) say Y to enable the
backlight driver.
+
+config BACKLIGHT_EZX
+ tristate "Motorola EXZ Backlight Driver (A780/E680/E680i)"
+ depends on BACKLIGHT_CLASS_DEVICE && PXA_EZX
+ default y
+ help
+ If you have a Motorola A780 or E680(i), say y to enable the
+ backlight driver.
+
Index: linux-2.6.24/drivers/video/backlight/Makefile
===================================================================
--- linux-2.6.24.orig/drivers/video/backlight/Makefile
+++ linux-2.6.24/drivers/video/backlight/Makefile
@@ -9,3 +9,4 @@
obj-$(CONFIG_BACKLIGHT_LOCOMO) += locomolcd.o
obj-$(CONFIG_BACKLIGHT_PROGEAR) += progear_bl.o
obj-$(CONFIG_BACKLIGHT_CARILLO_RANCH) += cr_bllcd.o
+obj-$(CONFIG_BACKLIGHT_EZX) += ezx_bl.o
Index: linux-2.6.24/drivers/video/backlight/ezx_bl.c
===================================================================
--- /dev/null
+++ linux-2.6.24/drivers/video/backlight/ezx_bl.c
@@ -0,0 +1,142 @@
+/*
+ * Backlight Driver for Motorola A780 and E680(i) GSM Phones.
+ *
+ * Copyright 2006 Vanille Media
+ *
+ * Author: Michael Lauer <mickey@Vanille.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/ezx.h>
+
+#define EZX_MIN_INTENSITY 0
+#define EZX_MAX_INTENSITY 50
+#define EZX_DEFAULT_INTENSITY 30
+
+static struct backlight_device *ezx_backlight_device;
+static int last_intensity;
+static int suspended;
+
+static int ezxbl_send_intensity(struct backlight_device *bd)
+{
+ int intensity = bd->props.brightness;
+
+ if (suspended || bd->props.power != FB_BLANK_UNBLANK ||
+ bd->props.fb_blank != FB_BLANK_UNBLANK)
+ intensity = 0;
+
+ if ( !last_intensity && intensity ) {
+ PWM_CTRL0 = 2; /* pre-scaler */
+ PWM_PWDUTY0 = intensity; /* duty cycle */
+ PWM_PERVAL0 = 49; /* period */
+ pxa_gpio_mode(GPIO16_PWM0_MD); /* set GPIO16 as alternate function + output */
+ pxa_set_cken(CKEN_PWM0, 1); /* clock enable */
+ }
+ else if ( last_intensity && !intensity ) {
+ PWM_PWDUTY0 = 0;
+ GAFR0_U &= 0xFFFFFFFC; /* ??? */
+ pxa_set_cken(CKEN_PWM0, 0); /* clock disable */
+ pxa_gpio_mode(GPIO16_PWM0); /* set GPIO16 as input */
+ } else if ( last_intensity && intensity ) {
+ PWM_PWDUTY0 = intensity; /* duty cycle */
+ }
+ last_intensity = intensity;
+ return 0;
+}
+
+static int ezxbl_get_intensity(struct backlight_device *bd)
+{
+ return last_intensity;
+}
+
+static int ezxbl_set_intensity(struct backlight_device *bd)
+{
+ return ezxbl_send_intensity(ezx_backlight_device);
+}
+
+#ifdef CONFIG_PM
+static int ezxbl_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ suspended = 1;
+ ezxbl_set_intensity(ezx_backlight_device);
+ return 0;
+}
+
+static int ezxbl_resume(struct platform_device *pdev)
+{
+ suspended = 0;
+ ezxbl_set_intensity(ezx_backlight_device);
+ return 0;
+}
+#else
+#define ezxbl_suspend NULL
+#define ezxbl_resume NULL
+#endif
+
+static struct backlight_ops ezxbl_ops = {
+ .get_brightness = ezxbl_get_intensity,
+ .update_status = ezxbl_set_intensity,
+};
+
+static int __init ezxbl_probe(struct platform_device *pdev)
+{
+ ezx_backlight_device = backlight_device_register ("ezx-bl",
+ &pdev->dev, NULL, &ezxbl_ops);
+ if (IS_ERR (ezx_backlight_device))
+ return PTR_ERR (ezx_backlight_device);
+
+ platform_set_drvdata(pdev, ezx_backlight_device);
+
+ ezx_backlight_device->props.power = FB_BLANK_UNBLANK;
+ ezx_backlight_device->props.max_brightness = EZX_MAX_INTENSITY;
+ ezx_backlight_device->props.brightness = EZX_DEFAULT_INTENSITY;
+ ezxbl_set_intensity(ezx_backlight_device);
+ backlight_update_status(ezx_backlight_device);
+
+ return 0;
+}
+
+static int ezxbl_remove(struct platform_device *pdev)
+{
+ backlight_device_unregister(ezx_backlight_device);
+ return 0;
+}
+
+static struct platform_driver ezxbl_driver = {
+ .probe = ezxbl_probe,
+ .remove = ezxbl_remove,
+ .suspend = ezxbl_suspend,
+ .resume = ezxbl_resume,
+ .driver = {
+ .name = "ezx-bl",
+ },
+};
+
+static int __init ezxbl_init(void)
+{
+ return platform_driver_register(&ezxbl_driver);
+}
+
+static void __exit ezxbl_exit(void)
+{
+ platform_driver_unregister(&ezxbl_driver);
+}
+
+module_init(ezxbl_init);
+module_exit(ezxbl_exit);
+
+MODULE_AUTHOR("Michael Lauer <mickey@Vanille.de>");
+MODULE_DESCRIPTION("Backlight Driver for Motorola A780|E680(i)");
+MODULE_LICENSE("GPL");
Index: linux-2.6.24/arch/arm/mach-pxa/ezx.c
===================================================================
--- linux-2.6.24.orig/arch/arm/mach-pxa/ezx.c
+++ linux-2.6.24/arch/arm/mach-pxa/ezx.c
@@ -66,6 +66,12 @@
#endif
EXPORT_SYMBOL_GPL(ezx_backlight_power);
+/* EZX LCD Backlight */
+static struct platform_device ezxbacklight_device = {
+ .name = "ezx-bl",
+ .id = -1,
+};
+
/* OHCI Controller */
static int ezx_ohci_init(struct device *dev)
{
@@ -107,6 +113,7 @@
static struct platform_device *devices[] __initdata = {
&ezxbp_device,
+ &ezxbacklight_device,
};
/* PM */
|
