diff options
Diffstat (limited to 'arch/arm/plat-s3c24xx/neo1973_memconfig.c')
| -rw-r--r-- | arch/arm/plat-s3c24xx/neo1973_memconfig.c | 181 |
1 files changed, 0 insertions, 181 deletions
diff --git a/arch/arm/plat-s3c24xx/neo1973_memconfig.c b/arch/arm/plat-s3c24xx/neo1973_memconfig.c deleted file mode 100644 index 6f623f179f3..00000000000 --- a/arch/arm/plat-s3c24xx/neo1973_memconfig.c +++ /dev/null @@ -1,181 +0,0 @@ -/* - * 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 <mach/hardware.h> -#include <asm/mach-types.h> -#include <mach/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"); - - if (machine_is_neo1973_gta01()) { - return -EINVAL; - } - - 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"); - |