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#include <linux/init.h>
#include <linux/err.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <mach/gpio.h>
#include <plat/gpio-cfg.h>
#include <mach/board-gps.h>
#if !defined(CONFIG_MACH_M0_GRANDECTC) && !defined(CONFIG_MACH_M0_DUOSCTC)
static struct device *gps_dev;
static ssize_t hwrev_show(struct device *dev, \
struct device_attribute *attr, char *buf)
{
return sprintf(buf, "%x\n", system_rev);
}
static DEVICE_ATTR(hwrev, S_IRUGO, hwrev_show, NULL);
static int __init gps_bcm475x_init(void)
{
int n_rst_pin = 0;
int n_rst_nc_pin = 0;
BUG_ON(!sec_class);
gps_dev = device_create(sec_class, NULL, 0, NULL, "gps");
BUG_ON(!gps_dev);
s3c_gpio_cfgpin(GPIO_GPS_RXD, S3C_GPIO_SFN(GPIO_GPS_RXD_AF));
s3c_gpio_setpull(GPIO_GPS_RXD, S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(GPIO_GPS_TXD, S3C_GPIO_SFN(GPIO_GPS_TXD_AF));
s3c_gpio_setpull(GPIO_GPS_TXD, S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpin(GPIO_GPS_CTS, S3C_GPIO_SFN(GPIO_GPS_CTS_AF));
s3c_gpio_setpull(GPIO_GPS_CTS, S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpin(GPIO_GPS_RTS, S3C_GPIO_SFN(GPIO_GPS_RTS_AF));
s3c_gpio_setpull(GPIO_GPS_RTS, S3C_GPIO_PULL_NONE);
#ifdef CONFIG_MACH_P2
n_rst_pin = system_rev >= 5 ?
GPIO_GPS_nRST_28V : GPIO_GPS_nRST;
#else
n_rst_pin = GPIO_GPS_nRST;
#endif
if (gpio_request(n_rst_pin, "GPS_nRST")) {
WARN(1, "fail to request gpio (GPS_nRST)\n");
device_destroy(sec_class, gps_dev->devt);
return 1;
}
if (device_create_file(gps_dev, &dev_attr_hwrev) < 0) {
pr_err("Failed to create device file(%s)!\n",
dev_attr_hwrev.attr.name);
}
s3c_gpio_setpull(n_rst_pin, S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(n_rst_pin, S3C_GPIO_OUTPUT);
gpio_direction_output(n_rst_pin, 1);
if (gpio_request(GPIO_GPS_PWR_EN, "GPS_PWR_EN")) {
WARN(1, "fail to request gpio (GPS_PWR_EN)\n");
device_destroy(sec_class, gps_dev->devt);
return 1;
}
s3c_gpio_setpull(GPIO_GPS_PWR_EN, S3C_GPIO_PULL_NONE);
s3c_gpio_cfgpin(GPIO_GPS_PWR_EN, S3C_GPIO_OUTPUT);
gpio_direction_output(GPIO_GPS_PWR_EN, 0);
gpio_export(n_rst_pin, 1);
gpio_export(GPIO_GPS_PWR_EN, 1);
gpio_export_link(gps_dev, "GPS_nRST", n_rst_pin);
gpio_export_link(gps_dev, "GPS_PWR_EN", GPIO_GPS_PWR_EN);
printk(KERN_DEBUG "%s - system_rev : %x\n", __func__, system_rev);
return 0;
}
device_initcall(gps_bcm475x_init);
#endif
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