patch-2.4.20 linux-2.4.20/arch/ppc/kernel/pmac_backlight.c

• Lines: 151
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.19/arch/ppc/kernel/pmac_backlight.c
• Orig date: Mon Feb 25 11:37:55 2002

diff -urN linux-2.4.19/arch/ppc/kernel/pmac_backlight.c linux-2.4.20/arch/ppc/kernel/pmac_backlight.c
@@ -1,150 +0,0 @@
-/*
- * BK Id: SCCS/s.pmac_backlight.c 1.10 12/01/01 20:09:06 benh
- */
-/*
- * Miscellaneous procedures for dealing with the PowerMac hardware.
- * Contains support for the backlight.
- * 
- *   Copyright (C) 2000 Benjamin Herrenschmidt
- *
- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/stddef.h>
-#include <linux/reboot.h>
-#include <linux/nvram.h>
-#include <asm/sections.h>
-#include <asm/ptrace.h>
-#include <asm/io.h>
-#include <asm/pgtable.h>
-#include <asm/system.h>
-#include <asm/prom.h>
-#include <asm/machdep.h>
-#include <asm/nvram.h>
-#include <asm/backlight.h>
-
-#include <linux/adb.h>
-#include <linux/pmu.h>
-
-static struct backlight_controller *backlighter = NULL;
-static void* backlighter_data = NULL;
-static int backlight_autosave = 0;
-static int backlight_level = BACKLIGHT_MAX;
-static int backlight_enabled = 1;
-
-void __pmac
-register_backlight_controller(struct backlight_controller *ctrler, void *data, char *type)
-{
-	struct device_node* bk_node;
-	char *prop;
-	int valid = 0;
-
-	bk_node = find_devices("backlight");
-	
-#ifdef CONFIG_ADB_PMU
-	/* Special case for the old PowerBook since I can't test on it */
-	backlight_autosave = machine_is_compatible("AAPL,3400/2400")
-		|| machine_is_compatible("AAPL,3500");
-	if ((backlight_autosave
-	     || machine_is_compatible("AAPL,PowerBook1998")
-	     || machine_is_compatible("PowerBook1,1"))
-	    && !strcmp(type, "pmu"))
-		valid = 1;
-#endif
-	if (bk_node) {
-		prop = get_property(bk_node, "backlight-control", NULL);
-		if (prop && !strncmp(prop, type, strlen(type)))
-			valid = 1;
-	}
-	if (!valid)
-		return;
-	backlighter = ctrler;
-	backlighter_data = data;
-	
-	if (bk_node && !backlight_autosave)
-		prop = get_property(bk_node, "bklt", NULL);
-	else
-		prop = NULL;
-	if (prop) {
-		backlight_level = ((*prop)+1) >> 1;
-		if (backlight_level > BACKLIGHT_MAX)
-			backlight_level = BACKLIGHT_MAX;
-	}
-	
-#ifdef CONFIG_ADB_PMU
-	if (backlight_autosave) {
-		struct adb_request req;
-		pmu_request(&req, NULL, 2, 0xd9, 0);
-		while (!req.complete)
-			pmu_poll();
-		backlight_level = req.reply[0] >> 4;
-	}
-#endif
-	if (!backlighter->set_enable(1, backlight_level, data))
-		backlight_enabled = 1;
-
-	printk(KERN_INFO "Registered \"%s\" backlight controller, level: %d/15\n",
-		type, backlight_level);
-}
-
-void __pmac
-unregister_backlight_controller(struct backlight_controller *ctrler, void *data)
-{
-	/* We keep the current backlight level (for now) */
-	if (ctrler == backlighter && data == backlighter_data)
-		backlighter = NULL;
-}
-
-int __pmac
-set_backlight_enable(int enable)
-{
-	int rc;
-	
-	if (!backlighter)
-		return -ENODEV;
-	rc = backlighter->set_enable(enable, backlight_level, backlighter_data);
-	if (!rc)
-		backlight_enabled = enable;
-	return rc;
-}
-
-int __pmac
-get_backlight_enable(void)
-{
-	if (!backlighter)
-		return -ENODEV;
-	return backlight_enabled;
-}
-
-int __pmac
-set_backlight_level(int level)
-{
-	int rc = 0;
-	
-	if (!backlighter)
-		return -ENODEV;
-	if (level < BACKLIGHT_MIN)
-		level = BACKLIGHT_OFF;
-	if (level > BACKLIGHT_MAX)
-		level = BACKLIGHT_MAX;
-	if (backlight_enabled)
-		rc = backlighter->set_level(level, backlighter_data);
-	if (!rc)
-		backlight_level = level;
-	if (!rc && !backlight_autosave) {
-		level <<=1;
-		if (level & 0x10)
-			level |= 0x01;
-		// -- todo: save to property "bklt"
-	}
-	return rc;
-}
-
-int __pmac
-get_backlight_level(void)
-{
-	if (!backlighter)
-		return -ENODEV;
-	return backlight_level;
-}