[Hackndev-commit] SF.net SVN: hackndev: [1259] linux4palm/linux/branches/rt/drivers/video/ backlight

[<far...@us...>]

Revision: 1259
          http://hackndev.svn.sourceforge.net/hackndev/?rev=1259&view=rev
Author:   farcaller
Date:     2007-08-23 10:25:07 -0700 (Thu, 23 Aug 2007)

Log Message:
-----------
linux: removed pxapwm_bl

Modified Paths:
--------------
    linux4palm/linux/branches/rt/drivers/video/backlight/Kconfig
    linux4palm/linux/branches/rt/drivers/video/backlight/Makefile

Removed Paths:
-------------
    linux4palm/linux/branches/rt/drivers/video/backlight/pxapwm_bl.c

Modified: linux4palm/linux/branches/rt/drivers/video/backlight/Kconfig
===================================================================
--- linux4palm/linux/branches/rt/drivers/video/backlight/Kconfig	2007-08-23 17:00:22 UTC (rev 1258)
+++ linux4palm/linux/branches/rt/drivers/video/backlight/Kconfig	2007-08-23 17:25:07 UTC (rev 1259)
@@ -78,14 +78,6 @@
 
           If you have an iPAQ h2200, say Y to enable the backlight driver.
 
-config BACKLIGHT_PXAPWM
-	tristate "PXA PWM Backlight Driver (deprecated)"
-	depends on BACKLIGHT_CLASS_DEVICE && ARCH_PXA
-	default n
-	help
-	  If your backlight is driven by the PXA PWM, say y to enable the backlight
-	  driver.
-
 config BACKLIGHT_S3C2410
 	tristate "Samsung S3C2410 Backlight Driver"
 	depends on (BACKLIGHT_CLASS_DEVICE || LCD_CLASS_DEVICE) && ARCH_S3C2410

Modified: linux4palm/linux/branches/rt/drivers/video/backlight/Makefile
===================================================================
--- linux4palm/linux/branches/rt/drivers/video/backlight/Makefile	2007-08-23 17:00:22 UTC (rev 1258)
+++ linux4palm/linux/branches/rt/drivers/video/backlight/Makefile	2007-08-23 17:25:07 UTC (rev 1259)
@@ -9,6 +9,5 @@
 obj-$(CONFIG_BACKLIGHT_HX2750)		+= hx2750_bl.o
 obj-$(CONFIG_BACKLIGHT_H2200)		+= h2200_bl.o
 obj-$(CONFIG_LCD_H2200)			+= h2200_lcd.o
-obj-$(CONFIG_BACKLIGHT_PXAPWM)		+= pxapwm_bl.o
 obj-$(CONFIG_BACKLIGHT_S3C2410)		+= s3c2410_lcd.o
 

Deleted: linux4palm/linux/branches/rt/drivers/video/backlight/pxapwm_bl.c
===================================================================
--- linux4palm/linux/branches/rt/drivers/video/backlight/pxapwm_bl.c	2007-08-23 17:00:22 UTC (rev 1258)
+++ linux4palm/linux/branches/rt/drivers/video/backlight/pxapwm_bl.c	2007-08-23 17:25:07 UTC (rev 1259)
@@ -1,240 +0,0 @@
-/*
- * Support for XScale PWM driven backlights.
- *
- * Authors: Vladimir "Farcaller" Pouzanov <far...@gm...>
- *          Alex Osborne <bob...@gm...>
- *
- * Based on Sharp Corgi driver
- *
- */
-
-#warning ---------------------------------------------------------------------
-#warning PXA PWM backlight driver is deperecated, please use corgi_bl instead.
-#warning ---------------------------------------------------------------------
-
-#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/pxapwm-bl.h>
-
-static struct backlight_ops pxapwmbl_ops;
-static void (*pxapwmbl_mach_turn_bl_on)(void);
-static void (*pxapwmbl_mach_turn_bl_off)(void);
-
-static void pxapwmbl_send_intensity(struct pxapwmbl_platform_data *bl, int intensity)
-{
-	unsigned long flags;
-	unsigned int period, prescaler;
-	
-	if (bl->limit)
-		intensity &= bl->limit_mask;
-
-	// set intensity to 0 if in power saving or fb is blanked
-	if (bl->dev->props.power != FB_BLANK_UNBLANK)
-		intensity = 0;
-	if (bl->dev->props.fb_blank != FB_BLANK_UNBLANK)
-		intensity = 0;
-
-	/* Does the backlight frequency need to be configured on a per device basis?
-	 * What are sensible defaults? Farcaller had prescaler 2, period 0x12bi (~6.1khz).
-	 * LD is configured for 1.2khz.
-	 *
-	 * h2200_lcd says "450 Hz which is quite enough."
-	 */
-	if (intensity) {
-		period = bl->period;
-		prescaler = bl->prescaler; 
-	} else {
-		period = 0;
-		prescaler=0;
-	}
-	
-	//printk("pxapwmbl: setting intensity to %d [bl->intensity=%d]\n", intensity, bl->intensity);
-	spin_lock_irqsave(&bl->lock, flags);
-
-	// poweron backlight if possible and needed
-	if (pxapwmbl_mach_turn_bl_on){
-		if ((bl->intensity <= bl->off_threshold) && (intensity > bl->off_threshold)){
-	    		pxapwmbl_mach_turn_bl_on();
-		}
-	}
-
-	//printk("pxapwmbl: setting intensity to %d [bl->intensity = %d]\n", intensity, bl->intensity);
-	switch (bl->pwm) {
-		case 0:
-			PWM_CTRL0   = prescaler;
-			PWM_PWDUTY0 = intensity;
-			PWM_PERVAL0 = period;
-			break;
-		case 1:
-			PWM_CTRL1   = prescaler;
-			PWM_PWDUTY1 = intensity;
-			PWM_PERVAL1 = period;
-			break;
-			
-		/* Note: PXA270 has 2 more PWMs, however the registers don't seem to be
-		 * defined in pxa-regs.h. If you have device which uses PWM 2 or 3, 
-		 * you'll need to add them here.
-		 */
-			
-		default:
-			printk(KERN_ERR "pxapwmbl_send_intensity: invalid PWM selected in"
-					" platform data.\n");
-	}
-
-	// poweroff backlight if possible and needed
-	if (pxapwmbl_mach_turn_bl_off){
-		if ((bl->intensity > bl->off_threshold) && (intensity <= bl->off_threshold)){
-			pxapwmbl_mach_turn_bl_off();
-		}
-	}
-
-	bl->dev->props.brightness = intensity;
-	bl->intensity=intensity;
-	
-	spin_unlock_irqrestore(&bl->lock, flags);
-}
-
-#ifdef CONFIG_PM
-static int stored_intensity = 0;
-static int pxapwmbl_suspend(struct platform_device *pdev, pm_message_t state)
-{
-	struct pxapwmbl_platform_data *bl = pdev->dev.platform_data;
-	stored_intensity = bl->intensity;
-	pxapwmbl_send_intensity(bl, 0);
-	return 0;
-}
-
-static int pxapwmbl_resume(struct platform_device *pdev)
-{
-	struct pxapwmbl_platform_data *bl = pdev->dev.platform_data;
-	pxapwmbl_send_intensity(bl,stored_intensity);
-	return 0;
-}
-#else
-#define pxapwmbl_suspend NULL
-#define pxapwmbl_resume	NULL
-#endif
-
-static int pxapwmbl_update_status(struct backlight_device *bd)
-{
-	int intensity;
-	struct pxapwmbl_platform_data *bl = class_get_devdata(&bd->class_dev);
-	
-	intensity = bd->props.brightness;
-
-	if (intensity > bd->props.max_brightness)
-		intensity = bd->props.max_brightness;
-
-	if (intensity < 0)
-		intensity = 0;
-
-	pxapwmbl_send_intensity(bl, intensity);
-
-	return 0;
-}
-
-static int pxapwmbl_get_intensity(struct backlight_device *bd)
-{
-	struct pxapwmbl_platform_data *bl = class_get_devdata(&bd->class_dev);
-	return bl->intensity;
-}
-
-/*
- * Called when the battery is low to limit the backlight intensity.
- * If limit==0 clear any limit, otherwise limit the intensity
- */
-void pxapwmbl_limit_intensity(struct platform_device *pdev, int limit)
-{
-	struct pxapwmbl_platform_data *bl = pdev->dev.platform_data;
-
-	bl->limit = (limit ? 1 : 0);
-	pxapwmbl_send_intensity(bl, bl->intensity);
-}
-EXPORT_SYMBOL(pxapwmbl_limit_intensity);
-
-static struct backlight_ops pxapwmbl_ops = {
-	.get_brightness	= pxapwmbl_get_intensity,
-	.update_status	= pxapwmbl_update_status,
-};
-
-static int pxapwmbl_probe(struct platform_device *pdev)
-{
-	struct pxapwmbl_platform_data *bl = pdev->dev.platform_data;
-
-	bl->dev = backlight_device_register ("pxapwm-bl", &pdev->dev,
-					     bl, &pxapwmbl_ops);
-
-	bl->dev->props.max_brightness = bl->max_intensity;
-
-	pxapwmbl_mach_turn_bl_on  = bl->turn_bl_on;
-	pxapwmbl_mach_turn_bl_off = bl->turn_bl_off;
-
-	bl->limit = 0;
-	bl->lock = SPIN_LOCK_UNLOCKED;
-
-	bl->dev->props.brightness = bl->default_intensity;
-	bl->dev->props.power = FB_BLANK_UNBLANK;
-	bl->dev->props.fb_blank = FB_BLANK_UNBLANK;
-
-	bl->off_threshold = 5;
-		
-	if (IS_ERR (bl->dev))
-		return PTR_ERR (bl->dev);
-
-	platform_set_drvdata(pdev, bl->dev);
-
-	pxapwmbl_send_intensity(bl, bl->default_intensity);
-	CKEN = CKEN | (bl->pwm?CKEN1_PWM1:CKEN0_PWM0);
-	bl->intensity = bl->default_intensity;
-	pxapwmbl_limit_intensity(pdev, 0);
-
-	printk("PXA PWM backlight driver initialized.\n");
-	return 0;
-}
-
-static int pxapwmbl_remove(struct platform_device *pdev)
-{
-	struct pxapwmbl_platform_data *bl = pdev->dev.platform_data;
-
-	pxapwmbl_send_intensity(bl, bl->default_intensity);
-
-	backlight_device_unregister(bl->dev);
-
-	printk("PXA PWM backlight driver unloaded\n");
-	return 0;
-}
-
-static struct platform_driver pxapwmbl_driver = {
-	.probe		= pxapwmbl_probe,
-	.remove		= pxapwmbl_remove,
-	.suspend	= pxapwmbl_suspend,
-	.resume		= pxapwmbl_resume,
-	.driver		= {
-		.name	= "pxapwm-bl",
-	},
-};
-
-static int __init pxapwmbl_init(void)
-{
-	int pdreg = platform_driver_register(&pxapwmbl_driver);
-
-	return pdreg;
-}
-
-static void __exit pxapwmbl_exit(void)
-{
-	platform_driver_unregister(&pxapwmbl_driver);
-}
-
-module_init(pxapwmbl_init);
-module_exit(pxapwmbl_exit);
-
-MODULE_AUTHOR("Vladimir Pouzanov <far...@gm...>");
-MODULE_DESCRIPTION("XScale PWM Backlight Driver");
-MODULE_LICENSE("GPL");


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