diff options
Diffstat (limited to 'target/linux/storm/patches/1100-gpio.patch')
| -rw-r--r-- | target/linux/storm/patches/1100-gpio.patch | 384 |
1 files changed, 0 insertions, 384 deletions
diff --git a/target/linux/storm/patches/1100-gpio.patch b/target/linux/storm/patches/1100-gpio.patch deleted file mode 100644 index 5717d75235..0000000000 --- a/target/linux/storm/patches/1100-gpio.patch +++ /dev/null @@ -1,384 +0,0 @@ ---- /dev/null -+++ b/drivers/char/gemini_gpio_dev.c -@@ -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"); -+ ---- a/drivers/char/Kconfig -+++ b/drivers/char/Kconfig -@@ -1071,5 +1071,12 @@ config DEVPORT - - 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 - ---- a/drivers/char/Makefile -+++ b/drivers/char/Makefile -@@ -116,6 +116,7 @@ obj-$(CONFIG_IPMI_HANDLER) += ipmi/ - - obj-$(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 - |