change prefix for kernelpatchbase 2.6.26

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13619 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 300 insertions, 0 deletions

diff --git a/target/linux/s3c24xx/patches-2.6.26/1212-introduce-BANKCON-meddling-sysfs.patch.patch b/target/linux/s3c24xx/patches-2.6.26/1212-introduce-BANKCON-meddling-sysfs.patch.patch
new file mode 100755
index 0000000000..207512e612
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.26/1212-introduce-BANKCON-meddling-sysfs.patch.patch
@@ -0,0 +1,300 @@
+From 3db422fde610960fdca8bd2a2b882015a62860ca Mon Sep 17 00:00:00 2001
+From: Andy Green <andy@openmoko.com>
+Date: Fri, 25 Jul 2008 23:06:20 +0100
+Subject: [PATCH] introduce-BANKCON-meddling-sysfs.patch
+
+A few questions have been flying around about how optimal
+our waitstates are for various things including Glamo.
+
+This patch introduces new sysfs nodes
+
+/sys/devices/platform/neo1973-memconfig.0/BANKCON0
+...
+/sys/devices/platform/neo1973-memconfig.0/BANKCON7
+
+If you cat them you get translated info about bus speed on
+that chip select, eg,
+
+# cat /sys/devices/platform/neo1973-memconfig.0/BANKCON1
+BANKCON1 = 0x00000A40
+ Type = ROM / SRAM
+ PMC  = normal (1 data)
+ Tacp = 2 clocks
+ Tcah = 0 clocks
+ Tcoh = 1 clock
+ Tacc = 3 clocks
+ Tcos = 1 clock
+ Tacs = 0 clocks
+
+You can write them in hex too
+
+# echo 0x200 > /sys/devices/platform/neo1973-memconfig.0/BANKCON1
+
+The write format for BANKCON0 - 5 looks like this
+
+ b1..b0   PMC  Page Mode Config
+ b3..b2   Tacp Page Mode Access Cycle
+ b5..b4   Tcah Address hold after CS deasserted
+ b7..b6   Tcoh CS hold after OE deasserted
+ b10..b8  Tacc Access Cycle Period
+ b12..b11 Tcos CS setup before OE asserted
+ b14..b13 Tacs Address setup before CS asserted
+
+BANKCON 6 and 7 have two extra bits
+
+ b16..b15  MT  Memory type (00=ROM/SRAM, 11=DRAM)
+
+If it's ROM/SRAM, the rest of the bits are as described above.
+For DRAM
+
+ b1..b0   SCAN Column address number
+ b3..b2   RAS to CAS delay
+
+The patch is intended to let people experiement on their own.  But
+of course you will crash things for sure if the timing is wrong, and
+you can also trash SD Card data if you make Glamo unstable, so remove
+it or remount ro first.  Other horrible things are possible, but
+because the settings aren't sticky, you should always be able to
+recover by either normal reboot usually or at worst NOR boot and then
+dfu.  Most likely you will just crash your session and have to reboot
+if your settings are bad, but consider yourself warned bad things are
+possible. :-)
+
+Signed-off-by: Andy Green <andy@openmoko.com>
+---
+ arch/arm/mach-s3c2440/mach-gta02.c        |    6 +
+ arch/arm/plat-s3c24xx/Makefile            |    3 +-
+ arch/arm/plat-s3c24xx/neo1973_memconfig.c |  186 +++++++++++++++++++++++++++++
+ 3 files changed, 194 insertions(+), 1 deletions(-)
+ create mode 100644 arch/arm/plat-s3c24xx/neo1973_memconfig.c
+
+diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
+index b3d3797..f30abb6 100644
+--- a/arch/arm/mach-s3c2440/mach-gta02.c
++++ b/arch/arm/mach-s3c2440/mach-gta02.c
+@@ -412,6 +412,11 @@ struct platform_device gta02_resume_reason_device = {
+ 	.num_resources	= 0,
+ };
+ 
++struct platform_device gta02_memconfig_device = {
++	.name 		= "neo1973-memconfig",
++	.num_resources	= 0,
++};
++
+ static struct map_desc gta02_iodesc[] __initdata = {
+ 	{
+ 		.virtual	= 0xe0000000,
+@@ -829,6 +834,7 @@ static struct platform_device *gta02_devices[] __initdata = {
+ 	&gta02_nor_flash,
+ 	&sc32440_fiq_device,
+ 	&gta02_version_device,
++	&gta02_memconfig_device,
+ 	&gta02_resume_reason_device,
+ 	&s3c24xx_pwm_device,
+ 
+diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile
+index f60dc5f..baae831 100644
+--- a/arch/arm/plat-s3c24xx/Makefile
++++ b/arch/arm/plat-s3c24xx/Makefile
+@@ -35,4 +35,5 @@ obj-$(CONFIG_MACH_NEO1973)	+= neo1973_version.o \
+ 				   neo1973_pm_gps.o \
+ 				   neo1973_pm_bt.o  \
+ 				   neo1973_shadow.o \
+-				   neo1973_pm_resume_reason.o
++				   neo1973_pm_resume_reason.o \
++				   neo1973_memconfig.o
+diff --git a/arch/arm/plat-s3c24xx/neo1973_memconfig.c b/arch/arm/plat-s3c24xx/neo1973_memconfig.c
+new file mode 100644
+index 0000000..55d85fc
+--- /dev/null
++++ b/arch/arm/plat-s3c24xx/neo1973_memconfig.c
+@@ -0,0 +1,186 @@
++/*
++ * Memory access timing control sysfs for the s3c24xx based device
++ *
++ * (C) 2008 by Openmoko Inc.
++ * Author: Andy Green <andy@openmoko.com>
++ * All rights reserved.
++ *
++ * 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/init.h>
++#include <linux/kernel.h>
++#include <linux/platform_device.h>
++
++#include <asm/hardware.h>
++#include <asm/mach-types.h>
++#include <asm/arch/regs-mem.h>
++
++static ssize_t neo1973_memconfig_read(struct device *dev,
++				       struct device_attribute *attr, char *buf)
++{
++	int index = attr->attr.name[strlen(attr->attr.name) - 1] - '0';
++	u32 reg = *((u32 *)(S3C2410_MEMREG(((index + 1) << 2))));
++	static const char *meaning[][8] = {
++		{
++			[0] = "normal (1 data)",
++			[1] = "4 data",
++			[2] = "8 data",
++			[3] = "16 data",
++		}, {
++			[0] = "2 clocks",
++			[1] = "3 clocks",
++			[2] = "4 clocks",
++			[3] = "6 clocks",
++		}, {
++			[0] = "0 clocks",
++			[1] = "1 clock",
++			[2] = "2 clocks",
++			[3] = "4 clocks",
++		}, {
++			[0] = "1 clock",
++			[1] = "2 clocks",
++			[2] = "3 clocks",
++			[3] = "4 clocks",
++			[4] = "6 clocks",
++			[5] = "8 clocks",
++			[6] = "10 clocks",
++			[7] = "14 clocks",
++		}, { /* after this, only for CS6 and CS7 */
++			[0] = "ROM / SRAM",
++			[1] = "(illegal)",
++			[2] = "(illegal)",
++			[3] = "Sync DRAM",
++		}, {
++			[0] = "8 Column bits",
++			[1] = "9 Column bits",
++			[2] = "10 Column bits",
++			[3] = "(illegal)",
++		}, {
++			[0] = "2 clocks",
++			[1] = "3 clocks",
++			[2] = "4 clocks",
++			[3] = "(illegal)",
++		}
++	};
++
++	if (index >= 6)
++		if (((reg >> 15) & 3) == 3) /* DRAM */
++			return sprintf(buf, "BANKCON%d = 0x%08X\n DRAM:\n"
++					    "  Trcd = %s\n  SCAN = %s\n", index,
++					    reg, meaning[5][reg & 3],
++					    meaning[1][(reg >> 2) & 3]);
++
++	return sprintf(buf, "BANKCON%d = 0x%08X\n Type = %s\n PMC  = %s\n"
++			    " Tacp = %s\n Tcah = %s\n Tcoh = %s\n Tacc = %s\n"
++			    " Tcos = %s\n Tacs = %s\n",
++			    index, reg, meaning[4][(reg >> 15) & 3],
++			    meaning[0][reg & 3],
++			    meaning[1][(reg >> 2) & 3],
++			    meaning[2][(reg >> 4) & 3],
++			    meaning[2][(reg >> 6) & 3],
++			    meaning[3][(reg >> 8) & 7],
++			    meaning[2][(reg >> 11) & 3],
++			    meaning[2][(reg >> 13) & 3]);
++}
++
++static ssize_t neo1973_memconfig_write(struct device *dev,
++		   struct device_attribute *attr, const char *buf, size_t count)
++{
++	int index = attr->attr.name[strlen(attr->attr.name) - 1] - '0';
++	unsigned long val = simple_strtoul(buf, NULL, 16);
++
++	dev_info(dev, "setting BANKCON%d <- 0x%08X\n", index, (u32)val);
++
++	*((u32 *)(S3C2410_MEMREG(((index + 1) << 2)))) = (u32)val;
++
++	return count;
++}
++
++
++static DEVICE_ATTR(BANKCON0, 0644, neo1973_memconfig_read,
++						       neo1973_memconfig_write);
++static DEVICE_ATTR(BANKCON1, 0644, neo1973_memconfig_read,
++						       neo1973_memconfig_write);
++static DEVICE_ATTR(BANKCON2, 0644, neo1973_memconfig_read,
++						       neo1973_memconfig_write);
++static DEVICE_ATTR(BANKCON3, 0644, neo1973_memconfig_read,
++						       neo1973_memconfig_write);
++static DEVICE_ATTR(BANKCON4, 0644, neo1973_memconfig_read,
++						       neo1973_memconfig_write);
++static DEVICE_ATTR(BANKCON5, 0644, neo1973_memconfig_read,
++						       neo1973_memconfig_write);
++static DEVICE_ATTR(BANKCON6, 0644, neo1973_memconfig_read,
++						       neo1973_memconfig_write);
++static DEVICE_ATTR(BANKCON7, 0644, neo1973_memconfig_read,
++						       neo1973_memconfig_write);
++
++static struct attribute *neo1973_memconfig_sysfs_entries[] = {
++	&dev_attr_BANKCON0.attr,
++	&dev_attr_BANKCON1.attr,
++	&dev_attr_BANKCON2.attr,
++	&dev_attr_BANKCON3.attr,
++	&dev_attr_BANKCON4.attr,
++	&dev_attr_BANKCON5.attr,
++	&dev_attr_BANKCON6.attr,
++	&dev_attr_BANKCON7.attr,
++	NULL
++};
++
++static struct attribute_group neo1973_memconfig_attr_group = {
++	.name	= NULL,
++	.attrs	= neo1973_memconfig_sysfs_entries,
++};
++
++static int __init neo1973_memconfig_probe(struct platform_device *pdev)
++{
++	dev_info(&pdev->dev, "starting\n");
++
++	switch (machine_arch_type) {
++#ifdef CONFIG_MACH_NEO1973_GTA01
++	case MACH_TYPE_NEO1973_GTA01:
++		return -EINVAL;
++#endif /* CONFIG_MACH_NEO1973_GTA01 */
++	default:
++		break;
++	}
++
++	return sysfs_create_group(&pdev->dev.kobj,
++						 &neo1973_memconfig_attr_group);
++}
++
++static int neo1973_memconfig_remove(struct platform_device *pdev)
++{
++	sysfs_remove_group(&pdev->dev.kobj, &neo1973_memconfig_attr_group);
++	return 0;
++}
++
++static struct platform_driver neo1973_memconfig_driver = {
++	.probe		= neo1973_memconfig_probe,
++	.remove		= neo1973_memconfig_remove,
++	.driver		= {
++		.name		= "neo1973-memconfig",
++	},
++};
++
++static int __devinit neo1973_memconfig_init(void)
++{
++	return platform_driver_register(&neo1973_memconfig_driver);
++}
++
++static void neo1973_memconfig_exit(void)
++{
++	platform_driver_unregister(&neo1973_memconfig_driver);
++}
++
++module_init(neo1973_memconfig_init);
++module_exit(neo1973_memconfig_exit);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Andy Green <andy@openmoko.com>");
++MODULE_DESCRIPTION("neo1973 memconfig");
++
+-- 
+1.5.6.3
+