changed Makefile and profiles, added patches for kernel 2.6.24 (stable-branch of Openmoko)

SVN-Revision: 13613

1 files changed, 120 insertions, 0 deletions

diff --git a/target/linux/s3c24xx/patches-2.6.24/1295-This-patch-adds-a-framebuffer-notifier-in-order-to-d.patch b/target/linux/s3c24xx/patches-2.6.24/1295-This-patch-adds-a-framebuffer-notifier-in-order-to-d.patch
new file mode 100644
index 0000000000..f698c8258f
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.24/1295-This-patch-adds-a-framebuffer-notifier-in-order-to-d.patch
@@ -0,0 +1,120 @@
+From 9aa87d67df2e59eea15f70c4e58f8bde10e5953b Mon Sep 17 00:00:00 2001
+From: Harald Welte <laforge@openmoko.org>
+Date: Wed, 8 Oct 2008 11:13:46 +0100
+Subject: [PATCH] This patch adds a framebuffer notifier in order to detect
+ FB_BLANK events and switch the JBT6K74 LCM controller into
+ its power saving mode.
+
+This has the potential of saving something like 50mW during screen blank.
+
+Signed-off-by: Harald Welte <laforge@openmoko.org>
+---
+ drivers/video/display/jbt6k74.c |   48 +++++++++++++++++++++++++++++++++++++++
+ 1 files changed, 48 insertions(+), 0 deletions(-)
+
+diff --git a/drivers/video/display/jbt6k74.c b/drivers/video/display/jbt6k74.c
+index b406298..9570543 100644
+--- a/drivers/video/display/jbt6k74.c
++++ b/drivers/video/display/jbt6k74.c
+@@ -3,6 +3,7 @@
+  * Copyright (C) 2006-2007 by Openmoko, Inc.
+  * Author: Harald Welte <laforge@openmoko.org>,
+  * 	   Stefan Schmidt <stefan@openmoko.org>
++ * Copyright (C) 2008 by Harald Welte <laforge@openmoko.org>
+  * All rights reserved.
+  *
+  * This program is free software; you can redistribute it and/or
+@@ -21,6 +22,7 @@
+  * MA 02111-1307 USA
+  *
+  */
++
+ #include <linux/kernel.h>
+ #include <linux/types.h>
+ #include <linux/module.h>
+@@ -28,6 +30,7 @@
+ #include <linux/platform_device.h>
+ #include <linux/delay.h>
+ #include <linux/jbt6k74.h>
++#include <linux/fb.h>
+ 
+ enum jbt_register {
+ 	JBT_REG_SLEEP_IN		= 0x10,
+@@ -111,6 +114,7 @@ struct jbt_info {
+ 	enum jbt_state state, last_state;
+ 	struct spi_device *spi_dev;
+ 	struct mutex lock;		/* protects tx_buf and reg_cache */
++	struct notifier_block fb_notif;
+ 	u16 tx_buf[8];
+ 	u16 reg_cache[0xEE];
+ 	int have_resumed;
+@@ -548,6 +552,40 @@ static struct attribute_group jbt_attr_group = {
+ 	.attrs	= jbt_sysfs_entries,
+ };
+ 
++static int fb_notifier_callback(struct notifier_block *self,
++				unsigned long event, void *data)
++{
++	struct jbt_info *jbt;
++	struct fb_event *evdata = data;
++	int fb_blank;
++
++	if (event != FB_EVENT_BLANK && event != FB_EVENT_CONBLANK)
++		return 0;
++
++	fb_blank = *(int *)evdata->data;
++	jbt = container_of(self, struct jbt_info, fb_notif);
++
++	switch (fb_blank) {
++	case FB_BLANK_UNBLANK:
++	case FB_BLANK_NORMAL:
++		jbt6k74_enter_state(jbt, JBT_STATE_NORMAL);
++		jbt6k74_display_onoff(jbt, 1);
++		break;
++	case FB_BLANK_VSYNC_SUSPEND:
++	case FB_BLANK_HSYNC_SUSPEND:
++		/* FIXME: we disable SLEEP since it would result in
++		 * a visible artefact (white screen) before the backlight
++		 * is dimmed to a dark enough level */
++		/* jbt6k74_enter_state(jbt, JBT_STATE_SLEEP); */
++		break;
++	case FB_BLANK_POWERDOWN:
++		jbt6k74_enter_state(jbt, JBT_STATE_DEEP_STANDBY);
++		break;
++	}
++
++	return 0;
++}
++
+ /* linux device model infrastructure */
+ 
+ static int __devinit jbt_probe(struct spi_device *spi)
+@@ -595,8 +633,17 @@ static int __devinit jbt_probe(struct spi_device *spi)
+ 		goto err_off;
+ 	}
+ 
++	jbt->fb_notif.notifier_call = fb_notifier_callback;
++	rc = fb_register_client(&jbt->fb_notif);
++	if (rc < 0) {
++		dev_err(&spi->dev, "cannot register notifier\n");
++		goto err_sysfs;
++	}
++
+ 	return 0;
+ 
++err_sysfs:
++	sysfs_remove_group(&spi->dev.kobj, &jbt_attr_group);
+ err_off:
+ 	jbt6k74_display_onoff(jbt, 0);
+ err_standby:
+@@ -615,6 +662,7 @@ static int __devexit jbt_remove(struct spi_device *spi)
+ 	/* We don't want to switch off the display in case the user
+ 	 * accidentially onloads the module (whose use count normally is 0) */
+ 
++	fb_unregister_client(&jbt->fb_notif);
+ 	sysfs_remove_group(&spi->dev.kobj, &jbt_attr_group);
+ 	dev_set_drvdata(&spi->dev, NULL);
+ 	kfree(jbt);
+-- 
+1.5.6.5
+