diff options
Diffstat (limited to 'target/linux/danube')
| -rw-r--r-- | target/linux/danube/files/drivers/char/danube_gpio.c | 696 |
1 files changed, 150 insertions, 546 deletions
diff --git a/target/linux/danube/files/drivers/char/danube_gpio.c b/target/linux/danube/files/drivers/char/danube_gpio.c index d61d9fb78..df5cfe753 100644 --- a/target/linux/danube/files/drivers/char/danube_gpio.c +++ b/target/linux/danube/files/drivers/char/danube_gpio.c @@ -30,644 +30,269 @@ #include <asm/danube/danube_ioctl.h> -#define DANUBE_PORT_OUT_REG 0x00000010 -#define DANUBE_PORT_IN_REG 0x00000014 -#define DANUBE_PORT_DIR_REG 0x00000018 -#define DANUBE_PORT_ALTSEL0_REG 0x0000001C -#define DANUBE_PORT_ALTSEL1_REG 0x00000020 -#define DANUBE_PORT_OD_REG 0x00000024 -#define DANUBE_PORT_STOFF_REG 0x00000028 -#define DANUBE_PORT_PUDSEL_REG 0x0000002C -#define DANUBE_PORT_PUDEN_REG 0x00000030 - -#define PORT_MODULE_ID 0xff - -#define PORT_WRITE_REG(reg, value) \ - *((volatile u32*)(reg)) = (u32)value; - -#define PORT_READ_REG(reg, value) \ - value = (u32)*((volatile u32*)(reg)); - #define PORT_IOC_CALL(ret,port,pin,func) \ ret=danube_port_reserve_pin(port,pin,PORT_MODULE_ID); \ if (ret == 0) ret=func(port,pin,PORT_MODULE_ID); \ if (ret == 0) ret=danube_port_free_pin(port,pin,PORT_MODULE_ID); -#define MAX_PORTS 2 // Number of ports in system -#define PINS_PER_PORT 16 // Number of available pins per port +#define MAX_PORTS 2 +#define PINS_PER_PORT 16 -static int port_major = 0; -static int danube_port_pin_usage[MAX_PORTS][PINS_PER_PORT]; // Map for pin usage -static u32 danube_port_bases[MAX_PORTS] - = { DANUBE_GPIO_BASE_ADDR, DANUBE_GPIO_P0_PUDEN }; +static unsigned int danube_gpio_major = 0; +/* TODO do we need this ? */ static struct semaphore port_sem; +/* TODO do we really need this ? return in a define is forbidden by coding style */ +#define DANUBE_GPIO_SANITY {if (port > MAX_PORTS || pin > PINS_PER_PORT) return -EINVAL; } + int -danube_port_reserve_pin (int port, int pin, int module_id) +danube_port_reserve_pin (unsigned int port, unsigned int pin) { - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] == 0) { - danube_port_pin_usage[port][pin] = module_id; - } - else { - return -EBUSY; - } + DANUBE_GPIO_SANITY; + printk("%s : call to obseleted function\n", __func__); return 0; } +EXPORT_SYMBOL(danube_port_reserve_pin); int -danube_port_free_pin (int port, int pin, int module_id) +danube_port_free_pin (unsigned int port, unsigned int pin) { - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - danube_port_pin_usage[port][pin] = 0; + DANUBE_GPIO_SANITY; + printk("%s : call to obseleted function\n", __func__); return 0; } +EXPORT_SYMBOL(danube_port_free_pin); int -danube_port_set_open_drain (int port, int pin, int module_id) +danube_port_set_open_drain (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_OD_REG, reg); - reg |= (1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_OD_REG, reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_OD + (port * 0x30)) | (1 << pin), DANUBE_GPIO_P0_OD); return 0; } +EXPORT_SYMBOL(danube_port_set_open_drain); int -danube_port_clear_open_drain (int port, int pin, int module_id) +danube_port_clear_open_drain (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_OD_REG, reg); - reg &= ~(1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_OD_REG, reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_OD + (port * 0x30)) & ~(1 << pin), DANUBE_GPIO_P0_OD); return 0; } +EXPORT_SYMBOL(danube_port_clear_open_drain); int -danube_port_set_pudsel (int port, int pin, int module_id) +danube_port_set_pudsel (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_PUDSEL_REG, reg); - reg |= (1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_PUDSEL_REG, - reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_PUDSEL + (port * 0x30)) | (1 << pin), DANUBE_GPIO_P0_PUDSEL); return 0; } +EXPORT_SYMBOL(danube_port_set_pudsel); int -danube_port_clear_pudsel (int port, int pin, int module_id) +danube_port_clear_pudsel (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_PUDSEL_REG, reg); - reg &= ~(1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_PUDSEL_REG, - reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_PUDSEL + (port * 0x30)) & ~(1 << pin), DANUBE_GPIO_P0_PUDSEL); return 0; } +EXPORT_SYMBOL(danube_port_clear_pudsel); int -danube_port_set_puden (int port, int pin, int module_id) +danube_port_set_puden (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_PUDEN_REG, reg); - reg |= (1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_PUDEN_REG, reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_PUDEN + (port * 0x30)) | (1 << pin), DANUBE_GPIO_P0_PUDEN); return 0; } +EXPORT_SYMBOL(danube_port_set_puden); int -danube_port_clear_puden (int port, int pin, int module_id) +danube_port_clear_puden (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_PUDEN_REG, reg); - reg &= ~(1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_PUDEN_REG, reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_PUDEN + (port * 0x30)) & ~(1 << pin), DANUBE_GPIO_P0_PUDEN); return 0; } +EXPORT_SYMBOL(danube_port_clear_puden); int -danube_port_set_stoff (int port, int pin, int module_id) +danube_port_set_stoff (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_STOFF_REG, reg); - reg |= (1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_STOFF_REG, reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_STOFF + (port * 0x30)) | (1 << pin), DANUBE_GPIO_P0_STOFF); return 0; } +EXPORT_SYMBOL(danube_port_set_stoff); int -danube_port_clear_stoff (int port, int pin, int module_id) +danube_port_clear_stoff (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_STOFF_REG, reg); - reg &= ~(1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_STOFF_REG, reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_STOFF + (port * 0x30)) & ~(1 << pin), DANUBE_GPIO_P0_STOFF); return 0; } +EXPORT_SYMBOL(danube_port_clear_stoff); int -danube_port_set_dir_out (int port, int pin, int module_id) +danube_port_set_dir_out (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_DIR_REG, reg); - reg |= (1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_DIR_REG, reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_DIR + (port * 0x30)) | (1 << pin), DANUBE_GPIO_P0_DIR); return 0; } +EXPORT_SYMBOL(danube_port_set_dir_out); int -danube_port_set_dir_in (int port, int pin, int module_id) +danube_port_set_dir_in (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_DIR_REG, reg); - reg &= ~(1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_DIR_REG, reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_DIR + (port * 0x30)) & ~(1 << pin), DANUBE_GPIO_P0_DIR); return 0; } +EXPORT_SYMBOL(danube_port_set_dir_in); int -danube_port_set_output (int port, int pin, int module_id) +danube_port_set_output (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_OUT_REG, reg); - reg |= (1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_OUT_REG, reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_OUT + (port * 0x30)) | (1 << pin), DANUBE_GPIO_P0_OUT); return 0; } +EXPORT_SYMBOL(danube_port_set_output); int -danube_port_clear_output (int port, int pin, int module_id) +danube_port_clear_output (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_OUT_REG, reg); - reg &= ~(1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_OUT_REG, reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_OUT + (port * 0x30)) & ~(1 << pin), DANUBE_GPIO_P0_OUT); return 0; } +EXPORT_SYMBOL(danube_port_clear_output); int -danube_port_get_input (int port, int pin, int module_id) +danube_port_get_input (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; + DANUBE_GPIO_SANITY; - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_IN_REG, reg); - reg &= (1 << pin); - if (reg == 0x00) + if (readl(DANUBE_GPIO_P0_IN + (port * 0x30)) & (1 << pin)) return 0; else return 1; } +EXPORT_SYMBOL(danube_port_get_input); int -danube_port_set_altsel0 (int port, int pin, int module_id) +danube_port_set_altsel0 (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL0_REG, - reg); - reg |= (1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL0_REG, - reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_ALTSEL0 + (port * 0x30)) | (1 << pin), DANUBE_GPIO_P0_ALTSEL0); return 0; } +EXPORT_SYMBOL(danube_port_set_altsel0); int -danube_port_clear_altsel0 (int port, int pin, int module_id) +danube_port_clear_altsel0 (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL0_REG, - reg); - reg &= ~(1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL0_REG, - reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_ALTSEL0 + (port * 0x30)) & ~(1 << pin), DANUBE_GPIO_P0_ALTSEL0); return 0; } +EXPORT_SYMBOL(danube_port_clear_altsel0); int -danube_port_set_altsel1 (int port, int pin, int module_id) +danube_port_set_altsel1 (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL1_REG, - reg); - reg |= (1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL1_REG, - reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_ALTSEL1 + (port * 0x30)) | (1 << pin), DANUBE_GPIO_P0_ALTSEL1); return 0; } +EXPORT_SYMBOL(danube_port_set_altsel1); int -danube_port_clear_altsel1 (int port, int pin, int module_id) +danube_port_clear_altsel1 (unsigned int port, unsigned int pin) { - u32 reg; - - if (port < 0 || pin < 0) - return -EINVAL; - if (port > MAX_PORTS || pin > PINS_PER_PORT) - return -EINVAL; - - if (danube_port_pin_usage[port][pin] != module_id) - return -EBUSY; - - PORT_READ_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL1_REG, - reg); - reg &= ~(1 << pin); - PORT_WRITE_REG (danube_port_bases[port] + DANUBE_PORT_ALTSEL1_REG, - reg); + DANUBE_GPIO_SANITY; + writel(readl(DANUBE_GPIO_P0_ALTSEL1 + (port * 0x30)) & ~(1 << pin), DANUBE_GPIO_P0_ALTSEL1); return 0; } +EXPORT_SYMBOL(danube_port_clear_altsel1); -int -danube_port_read_procmem (char *buf, char **start, off_t offset, int count, - int *eof, void *data) +long danube_port_read_procmem_helper(char* tag, u32* in_reg, char *buf) { - long len = 0; - int t = 0; - u32 bit = 0; - u32 reg = 0; - - len = sprintf (buf, "\nDanube Port Settings\n"); - - len = len + sprintf (buf + len, - " 3 2 1 0\n"); - len = len + sprintf (buf + len, - " 10987654321098765432109876543210\n"); - len = len + sprintf (buf + len, - "----------------------------------------\n"); - - len = len + sprintf (buf + len, "\nP0-OUT: "); - PORT_READ_REG (DANUBE_GPIO_P0_OUT, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } + u32 reg, bit = 0; + unsigned int len, t; - len = len + sprintf (buf + len, "\nP1-OUT: "); - PORT_READ_REG (DANUBE_GPIO_P1_OUT, reg); + len = sprintf(buf, "\n%s: ", tag); + reg = readl(in_reg); bit = 0x80000000; for (t = 0; t < 32; t++) { if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); + len = len + sprintf(buf + len, "X"); else - len = len + sprintf (buf + len, " "); + len = len + sprintf(buf + len, " "); bit = bit >> 1; } - len = len + sprintf (buf + len, "\nP0-IN: "); - PORT_READ_REG (DANUBE_GPIO_P0_IN, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP1-IN: "); - PORT_READ_REG (DANUBE_GPIO_P1_IN, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP0-DIR: "); - PORT_READ_REG (DANUBE_GPIO_P0_DIR, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP1-DIR: "); - PORT_READ_REG (DANUBE_GPIO_P1_DIR, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP0-STO: "); - PORT_READ_REG (DANUBE_GPIO_P0_STOFF, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP1-STO: "); - PORT_READ_REG (DANUBE_GPIO_P1_STOFF, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP0-PUDE:"); - PORT_READ_REG (DANUBE_GPIO_P0_PUDEN, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP1-PUDE:"); - PORT_READ_REG (DANUBE_GPIO_P1_PUDEN, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP0-OD: "); - PORT_READ_REG (DANUBE_GPIO_P0_OD, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP1-OD: "); - PORT_READ_REG (DANUBE_GPIO_P1_OD, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP0-PUDS:"); - PORT_READ_REG (DANUBE_GPIO_P0_PUDSEL, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP1-PUDS:"); - PORT_READ_REG (DANUBE_GPIO_P1_PUDSEL, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP0_ALT0:"); - PORT_READ_REG (DANUBE_GPIO_P0_ALTSEL0, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP0_ALT1:"); - PORT_READ_REG (DANUBE_GPIO_P0_ALTSEL1, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP1_ALT0:"); - PORT_READ_REG (DANUBE_GPIO_P1_ALTSEL0, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } - - len = len + sprintf (buf + len, "\nP1_ALT1:"); - PORT_READ_REG (DANUBE_GPIO_P1_ALTSEL1, reg); - bit = 0x80000000; - for (t = 0; t < 32; t++) { - if ((reg & bit) > 0) - len = len + sprintf (buf + len, "X"); - else - len = len + sprintf (buf + len, " "); - bit = bit >> 1; - } + return len; +} +int +danube_port_read_procmem (char *buf, char **start, off_t offset, int count, + int *eof, void *data) +{ + long len = sprintf (buf, "\nDanube Port Settings\n"); + + len += sprintf (buf + len, + " 3 2 1 0\n"); + len += sprintf (buf + len, + " 10987654321098765432109876543210\n"); + len += sprintf (buf + len, + "----------------------------------------\n"); + + len += danube_port_read_procmem_helper("P0-OUT", DANUBE_GPIO_P0_OUT, &buf[len]); + len += danube_port_read_procmem_helper("P1-OUT", DANUBE_GPIO_P1_OUT, &buf[len]); + len += danube_port_read_procmem_helper("P0-IN ", DANUBE_GPIO_P0_IN, &buf[len]); + len += danube_port_read_procmem_helper("P1-IN ", DANUBE_GPIO_P1_IN, &buf[len]); + len += danube_port_read_procmem_helper("P0-DIR", DANUBE_GPIO_P0_DIR, &buf[len]); + len += danube_port_read_procmem_helper("P1-DIR", DANUBE_GPIO_P1_DIR, &buf[len]); + len += danube_port_read_procmem_helper("P0-STO ", DANUBE_GPIO_P0_STOFF, &buf[len]); + len += danube_port_read_procmem_helper("P1-STO ", DANUBE_GPIO_P1_STOFF, &buf[len]); + len += danube_port_read_procmem_helper("P0-PUDE", DANUBE_GPIO_P0_PUDEN, &buf[len]); + len += danube_port_read_procmem_helper("P1-PUDE", DANUBE_GPIO_P1_PUDEN, &buf[len]); + len += danube_port_read_procmem_helper("P0-OD ", DANUBE_GPIO_P0_OD, &buf[len]); + len += danube_port_read_procmem_helper("P1-OD ", DANUBE_GPIO_P1_OD, &buf[len]); + len += danube_port_read_procmem_helper("P0-PUDS", DANUBE_GPIO_P0_PUDSEL, &buf[len]); + len += danube_port_read_procmem_helper("P1-PUDS", DANUBE_GPIO_P1_PUDSEL, &buf[len]); + len += danube_port_read_procmem_helper("P0-ALT0", DANUBE_GPIO_P0_ALTSEL0, &buf[len]); + len += danube_port_read_procmem_helper("P1-ALT0", DANUBE_GPIO_P1_ALTSEL0, &buf[len]); + len += danube_port_read_procmem_helper("P0-ALT1", DANUBE_GPIO_P0_ALTSEL1, &buf[len]); + len += danube_port_read_procmem_helper("P1-ALT1", DANUBE_GPIO_P1_ALTSEL1, &buf[len]); len = len + sprintf (buf + len, "\n\n"); - *eof = 1; // No more data available + *eof = 1; + return len; } @@ -814,62 +439,41 @@ danube_port_ioctl (struct inode *inode, struct file *filp, } static struct file_operations port_fops = { - open:danube_port_open, - release:danube_port_release, - ioctl:danube_port_ioctl + .open = danube_port_open, + .release = danube_port_release, + .ioctl = danube_port_ioctl }; int __init -danube_port_init (void) +danube_gpio_init (void) { - int t = 0; - int i = 0; - int err = 0; - printk ("Danube Port Initialization\n"); + int retval = 0; sema_init (&port_sem, 1); - /* Check ports for available pins */ - for (t = 0; t < MAX_PORTS; t++) { - for (i = 0; i < PINS_PER_PORT; i++) - danube_port_pin_usage[t][i] = 0; + danube_gpio_major = register_chrdev(0, "danube_gpio", &port_fops); + if (!danube_gpio_major) + { + printk("danube-port: Error! Could not register port device. #%d\n", danube_gpio_major); + retval = -EINVAL; + goto out; } - /* register port device */ - err = register_chrdev (0, "danube-port", &port_fops); - if (err > 0) - port_major = err; - else { - printk ("danube-port: Error! Could not register port device. #%d\n", err); - return err; - } - - /* Create proc file */ - create_proc_read_entry ("driver/danube_port", 0, NULL, + create_proc_read_entry("driver/danube_port", 0, NULL, danube_port_read_procmem, NULL); - return 0; + printk("registered danube gpio driver\n"); + +out: + return retval; +} + +void __exit +danube_gpio_exit (void) +{ + unregister_chrdev(danube_gpio_major, "danube_gpio"); + remove_proc_entry("danube_wdt", NULL); } -module_init (danube_port_init); - -EXPORT_SYMBOL (danube_port_reserve_pin); -EXPORT_SYMBOL (danube_port_free_pin); -EXPORT_SYMBOL (danube_port_set_open_drain); -EXPORT_SYMBOL (danube_port_clear_open_drain); -EXPORT_SYMBOL (danube_port_set_pudsel); -EXPORT_SYMBOL (danube_port_clear_pudsel); -EXPORT_SYMBOL (danube_port_set_puden); -EXPORT_SYMBOL (danube_port_clear_puden); -EXPORT_SYMBOL (danube_port_set_stoff); -EXPORT_SYMBOL (danube_port_clear_stoff); -EXPORT_SYMBOL (danube_port_set_dir_out); -EXPORT_SYMBOL (danube_port_set_dir_in); -EXPORT_SYMBOL (danube_port_set_output); -EXPORT_SYMBOL (danube_port_clear_output); -EXPORT_SYMBOL (danube_port_get_input); - -EXPORT_SYMBOL (danube_port_set_altsel0); -EXPORT_SYMBOL (danube_port_clear_altsel0); -EXPORT_SYMBOL (danube_port_set_altsel1); -EXPORT_SYMBOL (danube_port_clear_altsel1); +module_init(danube_gpio_init); +module_exit(danube_gpio_exit); |