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rtc-rv5c386a: add support for kernel 3.0

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remove BKL and adds support for changes in bcm47xx code


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27903 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
hauke
2011-08-04 20:06:17 +00:00
parent bf183aeff8
commit f6abe30f2c
2 changed files with 30 additions and 178 deletions
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51
package/rtc-rv5c386a/src/rtc.c
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@@ -47,17 +47,20 @@
#include <linux/miscdevice.h>
#include <linux/ioport.h>
#include <linux/fcntl.h>
#include <linux/mc146818rtc.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/rtc.h>
#include <linux/delay.h>
#include <linux/version.h>
#include <linux/smp_lock.h>
#include <linux/gpio.h>
#include <linux/uaccess.h>
#include <asm/uaccess.h>
#include <asm/current.h>
#include <asm/system.h>
#include "gpio.h"
#include <bcm47xx.h>
#include <nvram.h>
#define RTC_IS_OPEN 0x01 /* Means /dev/rtc is in use. */
@@ -66,8 +69,6 @@ static int rtc_debug = 0;
static unsigned long rtc_status = 0; /* Bitmapped status byte. */
static spinlock_t rtc_lock = SPIN_LOCK_UNLOCKED;
/* These settings are platform dependents. */
unsigned int sda_index = 0;
unsigned int scl_index = 0;
@@ -98,11 +99,7 @@ MODULE_AUTHOR("Andreas Engel");
MODULE_LICENSE("GPL");
/* Test stolen from switch-adm.c. */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,52)
module_param(rtc_debug, int, 0);
#else
MODULE_PARM(rtc_debug, "i");
#endif
static inline void sdalo(void)
{
@@ -237,7 +234,7 @@ static int i2c_inb(int ack)
static void i2c_init(void)
{
/* no gpio_control for EXTIF */
// gpio_control(sda_mask | scl_mask, 0);
// ssb_gpio_control(&ssb, sda_mask | scl_mask, 0);
gpio_set_value(sda_index, 0);
gpio_set_value(scl_index, 0);
@@ -308,6 +305,7 @@ static void get_rtc_time(struct rtc_time *rtc_tm)
* Read date and time from the RTC. We use read method (3).
*/
spin_lock_irq(&rtc_lock);
i2c_start();
i2c_outb(RTC_I2C_ADDRESS | I2C_READ_MASK);
cr2 = i2c_inb(I2C_ACK);
@@ -319,6 +317,7 @@ static void get_rtc_time(struct rtc_time *rtc_tm)
rtc_tm->tm_mon = i2c_inb(I2C_ACK);
rtc_tm->tm_year = i2c_inb(I2C_NAK);
i2c_stop();
spin_unlock_irq(&rtc_lock);
if (cr2 & RTC_VDET_MASK) {
printk(KERN_WARNING "***RTC BATTERY FAILURE***\n");
@@ -354,6 +353,7 @@ static void set_rtc_time(struct rtc_time *rtc_tm)
rtc_tm->tm_mon |= RTC_Y2K_MASK;
}
spin_lock_irq(&rtc_lock);
i2c_start();
i2c_outb(RTC_I2C_ADDRESS | I2C_WRITE_MASK);
i2c_outb(0x00); /* set starting register to 0 (=seconds) */
@@ -365,6 +365,7 @@ static void set_rtc_time(struct rtc_time *rtc_tm)
i2c_outb(rtc_tm->tm_mon);
i2c_outb(rtc_tm->tm_year);
i2c_stop();
spin_unlock_irq(&rtc_lock);
}
static ssize_t rtc_write(UNUSED struct file *filp, const char *buf,
@@ -495,9 +496,7 @@ static int rtc_do_ioctl(unsigned int cmd, unsigned long arg)
static long rtc_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
long ret;
lock_kernel();
ret = rtc_do_ioctl(cmd, arg);
unlock_kernel();
return ret;
}
@@ -518,27 +517,33 @@ static struct miscdevice rtc_dev = {
};
/* Savagely ripped from diag.c. */
extern char *nvram_get(char *str);
#define getvar(str) (nvram_get(str)?:"")
static inline int startswith (char *source, char *cmp)
{ return !strncmp(source,cmp,strlen(cmp)); }
{
return !strncmp(source, cmp, strlen(cmp));
}
static void platform_detect(void)
{
char *buf;
char buf[20];
int et0phyaddr, et1phyaddr;
/* Based on "model_no". */
if ((buf = nvram_get("model_no"))) {
if (startswith(buf,"WL700")) { /* WL700* */
if (nvram_getenv("model_no", buf, sizeof(buf)) >= 0) {
if (startswith(buf, "WL700")) { /* WL700* */
sda_index = 2;
scl_index = 5;
return;
}
}
if (startswith(getvar("hardware_version"), "WL300-")) {
if (nvram_getenv("et0phyaddr", buf, sizeof(buf)) >= 0 )
et0phyaddr = simple_strtoul(buf, NULL, 0);
if (nvram_getenv("et1phyaddr", buf, sizeof(buf)) >= 0 )
et1phyaddr = simple_strtoul(buf, NULL, 0);
if (nvram_getenv("hardware_version", buf, sizeof(buf)) >= 0) {
/* Either WL-300g or WL-HDD, do more extensive checks */
if ((simple_strtoul(getvar("et0phyaddr"), NULL, 0) == 0) &&
(simple_strtoul(getvar("et1phyaddr"), NULL, 0) == 1)) {
if (startswith(buf, "WL300-") && et0phyaddr == 0 && et1phyaddr == 1) {
sda_index = 4;
scl_index = 5;
return;
@@ -563,19 +568,23 @@ static int __init rtc_init(void)
/*
* Switch RTC to 24h mode
*/
spin_lock_irq(&rtc_lock);
i2c_start();
i2c_outb(RTC_I2C_ADDRESS | I2C_WRITE_MASK);
i2c_outb(0xE4); /* start at address 0xE, transmission mode 4 */
cr1 = i2c_inb(I2C_NAK);
i2c_stop();
spin_unlock_irq(&rtc_lock);
if ((cr1 & RTC_24HOUR_MODE_MASK) == 0) {
/* RTC is running in 12h mode */
printk(KERN_INFO "rtc.o: switching to 24h mode\n");
spin_lock_irq(&rtc_lock);
i2c_start();
i2c_outb(RTC_I2C_ADDRESS | I2C_WRITE_MASK);
i2c_outb(0xE0);
i2c_outb(cr1 | RTC_24HOUR_MODE_MASK);
i2c_stop();
spin_unlock_irq(&rtc_lock);
}
misc_register(&rtc_dev);