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danube gpio clean up

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SVN-Revision: 9741
v19.07.3_mercusys_ac12_duma
John Crispin 17 years ago
parent 279d7f707d
commit 21dc3a7b94
1 changed files with 150 additions and 546 deletions
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696
target/linux/danube/files/drivers/char/danube_gpio.c
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@ -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);

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