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#
# Patch managed by http://www.mn-logistik.de/unsupported/pxa250/patcher
#
--- linux-2.6.16/arch/arm/mach-pxa/ezx.c~ezx-backlight-r1.patch 2006-06-08 19:33:36.000000000 +0200
+++ linux-2.6.16/arch/arm/mach-pxa/ezx.c 2006-06-08 19:33:37.000000000 +0200
@@ -274,34 +274,9 @@
.udc_command = ezx_udc_command,
};
-/* pxafb */
-
-#define BKLIGHT_PRESCALE 2
-#define BKLIGHT_PERIOD 49
-#define DEFAULT_DUTYCYCLE 25
-#define MAX_DUTYCYCLE (BKLIGHT_PERIOD+1)
-#define MIN_DUTYCYCLE 0
-
-static void pxafb_backlight_power(int on)
-{
- if (on) {
- CKEN |= CKEN0_PWM0;
- PWM_CTRL0 = BKLIGHT_PRESCALE;
- PWM_PERVAL0 = BKLIGHT_PERIOD;
- PWM_PWDUTY0 = DEFAULT_DUTYCYCLE;
-
- GPDR0 |= 0x00010000; //PWM0 is GPIO16
- pxa_gpio_mode(GPIO16_PWM0_MD);
- } else {
- PWM_PWDUTY0 = 0;
- GAFR0_U &= 0xfffffffc;
- GPDR0 &= 0xfffeffff; /* set gpio16 (pwm0) as input */
- CKEN &= ~CKEN0_PWM0;
- PWM_PWDUTY0 = MIN_DUTYCYCLE;
- }
-}
-
-//#define mdelay(x) udelay((x)*1000)
+/*
+ * EZX PXA Framebuffer
+ */
static void pxafb_lcd_power(int on)
{
@@ -326,35 +301,24 @@
.xres = 240,
.yres = 320,
.bpp = 16,
-
.hsync_len = 10,
.left_margin = 20,
.right_margin = 10,
-
.vsync_len = 2,
.upper_margin = 3,
.lower_margin = 2,
-
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
-
.lccr0 = 0x002008F8,
.lccr3 = 0x0430FF09,
-
- .pxafb_backlight_power = &pxafb_backlight_power,
- .pxafb_lcd_power = &pxafb_lcd_power,
-};
-
-
-/* backlight for lcd */
-
-static struct resource ezx_backlight_resources[] = {
+ .pxafb_lcd_power= &pxafb_lcd_power,
};
-static struct platform_device ezx_backlight_device = {
- .name = "ezx-lcd-backlight",
+/*
+ * EZX LCD Backlight
+ */
+static struct platform_device ezxbacklight_device = {
+ .name = "ezx-bl",
.id = -1,
- .resource = ezx_backlight_resources,
- .num_resources = ARRAY_SIZE(ezx_backlight_resources),
};
#ifdef CONFIG_PXA_EZX_E680
@@ -786,6 +750,7 @@
static struct platform_device *devices[] __initdata = {
&ezx_bp_device,
+ &ezxbacklight_device,
#ifdef CONFIG_PXA_EZX_E680
&e680led_device,
#endif
--- linux-2.6.16/drivers/video/backlight/Kconfig~ezx-backlight-r1.patch 2006-06-08 19:33:34.000000000 +0200
+++ linux-2.6.16/drivers/video/backlight/Kconfig 2006-06-08 19:33:37.000000000 +0200
@@ -58,3 +58,12 @@
If you have a HP Jornada 680, say y to enable the
backlight driver.
+config BACKLIGHT_EZX
+ tristate "Motorola EXZ Backlight Driver (A780/E680/E680i)"
+ depends on BACKLIGHT_DEVICE && PXA_EZX
+ default y
+ help
+ If you have a Motorola A780 or E680(i), say y to enable the
+ backlight driver.
+
+
--- linux-2.6.16/drivers/video/backlight/Makefile~ezx-backlight-r1.patch 2006-03-20 06:53:29.000000000 +0100
+++ linux-2.6.16/drivers/video/backlight/Makefile 2006-06-08 19:33:37.000000000 +0200
@@ -5,3 +5,5 @@
obj-$(CONFIG_BACKLIGHT_CORGI) += corgi_bl.o
obj-$(CONFIG_BACKLIGHT_HP680) += hp680_bl.o
obj-$(CONFIG_SHARP_LOCOMO) += locomolcd.o
+obj-$(CONFIG_BACKLIGHT_EZX) += ezx_bl.o
+
--- /dev/null 2006-06-08 19:04:31.354926880 +0200
+++ linux-2.6.16/drivers/video/backlight/ezx_bl.c 2006-06-08 20:52:33.000000000 +0200
@@ -0,0 +1,156 @@
+/*
+ * 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/spinlock.h>
+#include <linux/fb.h>
+#include <linux/backlight.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/ezx.h>
+
+#define EZX_MIN_INTENSITY 00
+#define EZX_MAX_INTENSITY 50
+#define EZX_DEFAULT_INTENSITY 25
+
+static spinlock_t bl_lock = SPIN_LOCK_UNLOCKED;
+static struct backlight_device *ezx_backlight_device;
+static int last_intensity;
+
+static int ezxbl_send_intensity(struct backlight_device *bd)
+{
+ unsigned long flags;
+ int intensity = bd->props->brightness;
+
+ printk( KERN_DEBUG "ezx_set_intensity to %d\n", intensity );
+
+ if (bd->props->power != FB_BLANK_UNBLANK)
+ intensity = 0;
+ if (bd->props->fb_blank != FB_BLANK_UNBLANK)
+ intensity = 0;
+
+ spin_lock_irqsave(&bl_lock, flags);
+
+ printk( KERN_DEBUG "backlight last intensity was %d, new intensity is %d\n", last_intensity, intensity );
+
+ if ( !last_intensity && intensity ) {
+ printk( KERN_DEBUG "backlight power ON\n" );
+ 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(CKEN0_PWM0, 1); /* clock enable */
+ }
+ else if ( last_intensity && !intensity ) {
+ printk( KERN_DEBUG "backlight power OFF\n" );
+ PWM_PWDUTY0 = 0;
+ GAFR0_U &= 0xFFFFFFFC; /* ??? */
+ pxa_set_cken(CKEN0_PWM0, 0); /* clock disable */
+ pxa_gpio_mode(GPIO16_PWM0); /* set GPIO16 as input */
+ } else if ( last_intensity && intensity ) {
+ printk( KERN_DEBUG "backlight adjusting duty cycle\n" );
+ PWM_PWDUTY0 = intensity; /* duty cycle */
+ }
+ spin_unlock_irqrestore(&bl_lock, flags);
+ 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)
+{
+ //set suspend flag
+ ezxbl_set_intensity(ezx_backlight_device);
+ return 0;
+}
+
+static int ezxbl_resume(struct platform_device *pdev)
+{
+ // set resume flag
+ ezxbl_set_intensity(ezx_backlight_device);
+ return 0;
+}
+#else
+#define ezxbl_suspend NULL
+#define ezxbl_resume NULL
+#endif
+
+static struct backlight_properties ezxbl_data = {
+ .owner = THIS_MODULE,
+ .get_brightness = ezxbl_get_intensity,
+ .max_brightness = EZX_MAX_INTENSITY,
+ .update_status = ezxbl_set_intensity,
+};
+
+static int __init ezxbl_probe(struct platform_device *pdev)
+{
+ ezx_backlight_device = backlight_device_register ("ezx-bl",
+ NULL, &ezxbl_data);
+ if (IS_ERR (ezx_backlight_device))
+ return PTR_ERR (ezx_backlight_device);
+
+ ezxbl_data.power = FB_BLANK_UNBLANK;
+ ezxbl_data.brightness = EZX_DEFAULT_INTENSITY;
+ ezxbl_set_intensity(ezx_backlight_device);
+
+ printk("EZX Backlight Driver Initialized.\n");
+ return 0;
+}
+
+static int ezxbl_remove(struct platform_device *pdev)
+{
+ backlight_device_unregister(ezx_backlight_device);
+
+ printk("EZX Backlight Driver Unloaded.\n");
+ 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");
|
