add preliminary support for Storm SL3512 based devices, not ready yet

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@10956 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 390 insertions, 0 deletions

diff --git a/target/linux/storm/patches/1100-gpio.patch b/target/linux/storm/patches/1100-gpio.patch
new file mode 100644
index 000000000..d2ea7279b
--- /dev/null
+++ b/target/linux/storm/patches/1100-gpio.patch
@@ -0,0 +1,390 @@
+Index: linux-2.6.23.16/drivers/char/gemini_gpio_dev.c
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23.16/drivers/char/gemini_gpio_dev.c	2008-03-15 17:05:28.382258620 +0200
+@@ -0,0 +1,356 @@
++/*
++ * 	GPIO driver for Gemini board
++ * 	Provides /dev/gpio
++ */
++
++#include <linux/version.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/init.h>
++#include <linux/proc_fs.h>
++#include <linux/fcntl.h>
++#include <linux/miscdevice.h>
++#include <asm/uaccess.h>	/* copy_to_user, copy_from_user */
++
++#include <asm/hardware.h>
++#include <asm/io.h>
++#include <asm/arch/sl2312.h>
++#include <asm/arch/irqs.h>
++#include <asm/arch/gemini_gpio.h>
++
++#define GEMINI_GPIO_BASE1		IO_ADDRESS(SL2312_GPIO_BASE)
++#define GEMINI_GPIO_BASE2		IO_ADDRESS(SL2312_GPIO_BASE1)
++
++#define GPIO_SET	2
++#define MAX_GPIO_LINE	32*GPIO_SET
++
++wait_queue_head_t gemini_gpio_wait[MAX_GPIO_LINE];
++
++enum GPIO_REG
++{
++    GPIO_DATA_OUT   		= 0x00,
++    GPIO_DATA_IN    		= 0x04,
++    GPIO_PIN_DIR    		= 0x08,
++    GPIO_BY_PASS    		= 0x0C,
++    GPIO_DATA_SET   		= 0x10,
++    GPIO_DATA_CLEAR 		= 0x14,
++    GPIO_PULL_ENABLE 		= 0x18,
++    GPIO_PULL_TYPE 			= 0x1C,
++    GPIO_INT_ENABLE 		= 0x20,
++    GPIO_INT_RAW_STATUS 	= 0x24,
++    GPIO_INT_MASK_STATUS 	= 0x28,
++    GPIO_INT_MASK 			= 0x2C,
++    GPIO_INT_CLEAR 			= 0x30,
++    GPIO_INT_TRIG 			= 0x34,
++    GPIO_INT_BOTH 			= 0x38,
++    GPIO_INT_POLAR 			= 0x3C
++};
++
++unsigned int regist_gpio_int0=0,regist_gpio_int1=0;
++
++/* defines a specific GPIO bit number and state */
++struct gpio_bit {
++	unsigned char bit;
++	unsigned char state;
++};
++
++#define GPIO_MAJOR    10
++#define GPIO_MINOR    127
++
++/*
++ * ioctl calls that are permitted to the /dev/gpio interface
++ */
++#define GPIO_GET_BIT	0x0000001
++#define GPIO_SET_BIT	0x0000002
++#define GPIO_GET_CONFIG	0x0000003
++#define GPIO_SET_CONFIG 0x0000004
++
++//#define GPIO_CONFIG_OUT  1
++//#define GPIO_CONFIG_IN   2
++
++
++
++#define DEVICE_NAME "gpio"
++
++//#define DEBUG
++
++/*
++ * GPIO interface
++ */
++
++/* /dev/gpio */
++static int gpio_ioctl(struct inode *inode, struct file *file,
++                     unsigned int cmd, unsigned long arg);
++
++/* /proc/driver/gpio */
++static int gpio_read_proc(char *page, char **start, off_t off,
++                         int count, int *eof, void *data);
++
++static unsigned char gpio_status;        /* bitmapped status byte.       */
++
++/* functions for set/get gpio lines on storlink cpu */
++
++void gpio_line_get(unsigned char pin, u32 * data)
++{
++	unsigned int set = pin >>5;		// each GPIO set has 32 pins
++	unsigned int status,addr;
++
++	addr = (set ? GEMINI_GPIO_BASE2:GEMINI_GPIO_BASE1) + GPIO_DATA_IN;
++	status = readl(addr);
++#ifdef DEBUG
++	printk("status = %08X, pin = %d, set = %d\n", status, pin, set);
++#endif
++	if (set)
++			*data = (status&(1<<(pin-32)))?1:0;
++	else
++			*data = (status&(1<<pin))?1:0;
++}
++
++void gpio_line_set(unsigned char pin, u32 high)
++{
++	unsigned char set = pin >>5;		// each GPIO set has 32 pins
++	unsigned int status=0,addr;
++
++	addr = (set ? GEMINI_GPIO_BASE2:GEMINI_GPIO_BASE1)+(high?GPIO_DATA_SET:GPIO_DATA_CLEAR);
++
++	status &= ~(1 << (pin %32));
++	status |= (1 << (pin % 32));
++	writel(status,addr);
++}
++
++/*
++ * pin = [0..63]
++ * mode =
++ * 			1 -- OUT
++ * 			2 -- IN
++ */
++void gpio_line_config(unsigned char pin, unsigned char mode)
++{
++	unsigned char set = pin >>5;		// each GPIO set has 32 pins
++	unsigned int status,addr;
++
++	addr = (set ? GEMINI_GPIO_BASE2:GEMINI_GPIO_BASE1)+GPIO_PIN_DIR;
++	status = readl(addr);
++
++	status &= ~(1 << (pin %32));
++	if (mode == 1)
++			status |= (1 << (pin % 32)); /* PinDir: 0 - input, 1 - output */
++
++	writel(status,addr);
++#if 0
++	/* enable pullup-high if mode is input */
++
++	addr = (set ? GEMINI_GPIO_BASE2:GEMINI_GPIO_BASE1)+GPIO_PULL_ENABLE;
++	status = readl(addr);
++
++	status &= ~(1 << (pin %32));
++	if (mode == 2) /* input */
++			status |= (1 << (pin % 32)); /* PullEnable: 0 - disable, 1 - enable */
++
++	writel(status,addr);
++
++	addr = (set ? GEMINI_GPIO_BASE2:GEMINI_GPIO_BASE1)+GPIO_PULL_TYPE;
++	status = readl(addr);
++
++	status &= ~(1 << (pin %32));
++	if (mode == 2) /* input */
++			status |= (1 << (pin % 32)); /* PullType: 0 - low, 1 - high */
++
++	writel(status,addr);
++#endif
++}
++
++#define GPIO_IS_OPEN             0x01    /* means /dev/gpio is in use     */
++
++/*
++ *      Now all the various file operations that we export.
++ */
++static int gpio_ioctl(struct inode *inode, struct file *file,
++                         unsigned int cmd, unsigned long arg)
++{
++		struct gpio_bit bit;
++		u32 val;
++
++		if (copy_from_user(&bit, (struct gpio_bit *)arg,
++								sizeof(bit)))
++				return -EFAULT;
++
++		switch (cmd) {
++
++				case GPIO_GET_BIT:
++						gpio_line_get(bit.bit, &val);
++						bit.state = val;
++						return copy_to_user((void *)arg, &bit, sizeof(bit)) ? -EFAULT : 0;
++				case GPIO_SET_BIT:
++						val = bit.state;
++						gpio_line_set(bit.bit, val);
++						return 0;
++				case GPIO_GET_CONFIG:
++						// gpio_line_config(bit.bit, bit.state);
++						return copy_to_user((void *)arg, &bit, sizeof(bit)) ? -EFAULT : 0;
++				case GPIO_SET_CONFIG:
++						val = bit.state;
++						gpio_line_config(bit.bit, bit.state);
++						return 0;
++		}
++		return -EINVAL;
++}
++
++
++static int gpio_open(struct inode *inode, struct file *file)
++{
++        if (gpio_status & GPIO_IS_OPEN)
++                return -EBUSY;
++
++        gpio_status |= GPIO_IS_OPEN;
++        return 0;
++}
++
++
++static int gpio_release(struct inode *inode, struct file *file)
++{
++        /*
++         * Turn off all interrupts once the device is no longer
++         * in use and clear the data.
++         */
++
++        gpio_status &= ~GPIO_IS_OPEN;
++        return 0;
++}
++
++
++/*
++ *      The various file operations we support.
++ */
++
++static struct file_operations gpio_fops = {
++        .owner          = THIS_MODULE,
++        .ioctl          = gpio_ioctl,
++        .open           = gpio_open,
++        .release        = gpio_release,
++};
++
++static struct miscdevice gpio_dev =
++{
++        .minor          = GPIO_MINOR,
++        .name           = "gpio",
++        .fops           = &gpio_fops,
++};
++
++
++
++
++#ifdef CONFIG_PROC_FS
++static struct proc_dir_entry *dir;
++
++/*
++ *      Info exported via "/proc/driver/gpio".
++ */
++static int gpio_get_status(char *buf)
++{
++    char *p = buf;
++	u32 val = 0;
++	int i;
++	int bit;
++#ifdef DEBUG
++	u32 addr;
++
++	for (i = 0; i < 0x20; i+=4 ) {
++			addr = IO_ADDRESS(SL2312_GPIO_BASE) + i;
++			val = readl(addr);
++			p+=sprintf(p, "GPIO0: 0x%02X: %08X\n", i, val );
++	}
++	for (i = 0; i < 0x20; i+=4 ) {
++			addr = IO_ADDRESS(SL2312_GPIO_BASE1) + i;
++			val = readl(addr);
++			p+=sprintf(p, "GPIO1: 0x%02X: %08X\n", i, val );
++	}
++#endif
++
++	for (i = 0; i < 32; i++) {
++			gpio_line_get(i, &bit);
++			if (bit)
++					val |= (1 << i);
++	}
++	p += sprintf(p, "gpio0\t: 0x%08x\n", val);
++
++	val = 0;
++	for (i = 32; i < 64; i++) {
++			gpio_line_get(i, &bit);
++			if (bit)
++					val |= (1 << i);
++	}
++	p += sprintf(p, "gpio1\t: 0x%08x\n", val);
++
++	return p - buf;
++}
++
++
++/* /proc/driver/gpio read op
++ */
++static int gpio_read_proc(char *page, char **start, off_t off,
++                             int count, int *eof, void *data)
++{
++        int len = gpio_get_status (page);
++
++        if (len <= off+count)
++			*eof = 1;
++        *start = page + off;
++        len -= off;
++        if ( len > count )
++			len = count;
++        if ( len < 0 )
++			len = 0;
++        return len;
++}
++#endif /* CONFIG_PROC_FS */
++
++
++static int __init gpio_init_module(void)
++{
++        int retval;
++#ifdef CONFIG_PROC_FS
++	struct proc_dir_entry *res;
++#endif
++
++        /* register /dev/gpio file ops */
++	//retval = register_chrdev(GPIO_MAJOR, DEVICE_NAME, &gpio_fops);
++	retval = misc_register(&gpio_dev);
++        if(retval < 0)
++                return retval;
++
++#ifdef CONFIG_PROC_FS
++	dir = proc_mkdir("driver/gpio", NULL);
++	if (!dir) {
++		misc_deregister(&gpio_dev);
++		return -ENOMEM;
++	}
++        /* register /proc/driver/gpio */
++	res = create_proc_entry("info", 0644, dir);
++	if (res) {
++		res->read_proc= gpio_read_proc;
++	} else {
++		misc_deregister(&gpio_dev);
++		return -ENOMEM;
++	}
++#endif
++
++	printk("%s: GPIO driver loaded\n", __FILE__);
++
++	return 0;
++}
++
++static void __exit gpio_cleanup_module(void)
++{
++	remove_proc_entry ("info", dir);
++        misc_deregister(&gpio_dev);
++
++	printk("%s: GPIO driver unloaded\n", __FILE__);
++}
++
++module_init(gpio_init_module);
++module_exit(gpio_cleanup_module);
++
++MODULE_AUTHOR("Jonas Majauskas");
++MODULE_LICENSE("GPL");
++
+Index: linux-2.6.23.16/drivers/char/Kconfig
+===================================================================
+--- linux-2.6.23.16.orig/drivers/char/Kconfig	2008-03-13 17:45:54.000221290 +0200
++++ linux-2.6.23.16/drivers/char/Kconfig	2008-03-15 17:05:09.381175866 +0200
+@@ -1064,5 +1064,12 @@
+ 
+ source "drivers/s390/char/Kconfig"
+ 
++config GEMINI_GPIO_DEV
++	tristate "GPIO driver for Gemini board (provides /dev/gpio)"
++	depends on ARCH_SL2312
++	default n
++	help
++	  GPIO driver for Gemini boards - SL3512, SL3516.
++
+ endmenu
+ 
+Index: linux-2.6.23.16/drivers/char/Makefile
+===================================================================
+--- linux-2.6.23.16.orig/drivers/char/Makefile	2008-03-15 17:04:35.879266660 +0200
++++ linux-2.6.23.16/drivers/char/Makefile	2008-03-15 17:05:09.381175866 +0200
+@@ -115,6 +115,7 @@
+ 
+ obj-$(CONFIG_HANGCHECK_TIMER)	+= hangcheck-timer.o
+ obj-$(CONFIG_TCG_TPM)		+= tpm/
++obj-$(CONFIG_GEMINI_GPIO_DEV)		+= gemini_gpio_dev.o
+ 
+ obj-$(CONFIG_PS3_FLASH)		+= ps3flash.o
+