static ssize_t sirf_write_proc(struct file *filp,
const char *buff, size_t len, loff_t *off)
{
char messages[256];
int flag, ret;
char buffer[7];
if (len > 256)
len = 256;
if (copy_from_user(messages, buff, len))
return -EFAULT;
if (strncmp(messages, "off", 3) == 0) {
strcpy(sirf_status, "off");
gps_power_off();
} else if (strncmp(messages, "on", 2) == 0) {
strcpy(sirf_status, "on");
gps_power_on();
} else if (strncmp(messages, "reset", 5) == 0) {
strcpy(sirf_status, messages);
ret = sscanf(messages, "%s %d", buffer, &flag);
if (ret == 2)
gps_reset(flag);
} else if (strncmp(messages, "sirfon", 5) == 0) {
strcpy(sirf_status, messages);
ret = sscanf(messages, "%s %d", buffer, &flag);
if (ret == 2)
gps_on_off(flag);
} else {
printk("usage: echo {on/off} > /proc/driver/sirf\n");
}
return len;
}
static void create_sirf_proc_file(void)
{
struct proc_dir_entry *sirf_proc_file =
create_proc_entry("driver/sirf", 0777, NULL);
if (sirf_proc_file) {
sirf_proc_file->read_proc = sirf_read_proc;
sirf_proc_file->write_proc = (write_proc_t *)sirf_write_proc;
} else
printk(KERN_INFO "proc file create failed!\n");
gps_sirf_gpio_init();
gps_power_on();
}
static ssize_t sirf_write_proc(struct file *filp,
const char *buff, size_t len, loff_t *off)
{
char messages[256];
int flag, ret;
char buffer[7];
if (len > 255)
len = 255;
memset(messages, 0, sizeof(messages));
if (!buff || copy_from_user(messages, buff, len))
return -EFAULT;
if (strlen(messages) > (SIRF_STATUS_LEN - 1)) {
pr_warning("[ERROR] messages too long! (%d) %s\n",
strlen(messages), messages);
return -EFAULT;
}
if (strncmp(messages, "off", 3) == 0) {
strcpy(sirf_status, "off");
gps_power_off();
} else if (strncmp(messages, "on", 2) == 0) {
strcpy(sirf_status, "on");
gps_power_on();
} else if (strncmp(messages, "reset", 5) == 0) {
strcpy(sirf_status, messages);
ret = sscanf(messages, "%s %d", buffer, &flag);
if (ret == 2){
gps_reset(flag);
}
} else if (strncmp(messages, "sirfon", 6) == 0) {
strcpy(sirf_status, messages);
ret = sscanf(messages, "%s %d", buffer, &flag);
if (ret == 2){
gps_on_off(flag);
}
} else
pr_info("usage: echo {on/off} > /proc/driver/sirf\n");
return len;
}
static ssize_t gps_ctrl(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
static char msg[256];
int flag, ret;
struct mmp_gps_info *info = dev_get_drvdata(dev);
count = (count > 255) ? 255 : count;
memset(msg, 0, count);
sscanf(buf, "%s", info->chip_status);
if (!strncmp(buf, "off", 3)) {
strncpy(info->chip_status, "off", 4);
gps_power_off(info);
} else if (!strncmp(buf, "on", 2)) {
strncpy(info->chip_status, "on", 3);
gps_power_on(info);
} else if (!strncmp(buf, "reset", 5)) {
strncpy(info->chip_status, "reset", 6);
ret = sscanf(buf, "%s %d", msg, &flag);
if (ret == 2)
gps_reset(info, flag);
} else if (!strncmp(buf, "wakeup", 6)) {
strncpy(info->chip_status, "wakeup", 7);
ret = sscanf(buf, "%s %d", msg, &flag);
if (ret == 2)
gps_on_off(info, flag);
} else if (!strncmp(buf, "eclk", 4)) {
strncpy(info->chip_status, "eclk", 5);
ret = sscanf(buf, "%s %d", msg, &flag);
if (ret == 2)
gps_eclk_ctrl(info, flag);
} else
dev_info(info->dev, "usage wrong\n");
return count;
}