diff options
Diffstat (limited to 'target/linux/ep93xx/patches-2.6.30/004-simone-rtc.patch')
| -rw-r--r-- | target/linux/ep93xx/patches-2.6.30/004-simone-rtc.patch | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/target/linux/ep93xx/patches-2.6.30/004-simone-rtc.patch b/target/linux/ep93xx/patches-2.6.30/004-simone-rtc.patch new file mode 100644 index 0000000000..69f2c5a9bd --- /dev/null +++ b/target/linux/ep93xx/patches-2.6.30/004-simone-rtc.patch @@ -0,0 +1,78 @@ +--- a/drivers/rtc/rtc-ds1307.c ++++ b/drivers/rtc/rtc-ds1307.c +@@ -661,6 +661,13 @@ static int __devinit ds1307_probe(struct + goto exit_free; + } + ++#if (defined(CONFIG_MACH_SIM_ONE)) ++ /* SIM.ONE board needs 32khz clock on SQW/INTB pin */ ++ i2c_smbus_write_byte_data(client, DS1337_REG_CONTROL, ++ ds1307->regs[0] & ~DS1337_BIT_INTCN); ++ i2c_smbus_write_byte_data(client, DS1337_REG_CONTROL, ++ ds1307->regs[0] | (DS1337_BIT_RS1 | DS1337_BIT_RS2)); ++#endif + /* oscillator off? turn it on, so clock can tick. */ + if (ds1307->regs[0] & DS1337_BIT_nEOSC) + ds1307->regs[0] &= ~DS1337_BIT_nEOSC; +--- a/drivers/rtc/Kconfig ++++ b/drivers/rtc/Kconfig +@@ -570,6 +570,14 @@ config RTC_DRV_EP93XX + This driver can also be built as a module. If so, the module + will be called rtc-ep93xx. + ++config RTC_DRV_EP93XX_DS1337 ++ bool "Cirrus Logic EP93XX using DS1337 chip" ++ depends on RTC_DRV_EP93XX && I2C && MACH_SIM_ONE ++ help ++ If you say yes here, the EP93XX driver will use the ++ battery-backed-up DS1337 RTC chip on the SIM.ONE board. ++ You almost certainly want this. ++ + config RTC_DRV_SA1100 + tristate "SA11x0/PXA2xx" + depends on ARCH_SA1100 || ARCH_PXA +--- a/drivers/rtc/rtc-ep93xx.c ++++ b/drivers/rtc/rtc-ep93xx.c +@@ -13,6 +13,13 @@ + #include <linux/rtc.h> + #include <linux/platform_device.h> + #include <mach/hardware.h> ++#include <asm/io.h> ++ ++#if defined(CONFIG_RTC_DRV_EP93XX_DS1337) ++extern int ds1337_do_command(int id, int cmd, void *arg); ++#define DS1337_GET_DATE 0 ++#define DS1337_SET_DATE 1 ++#endif + + #define EP93XX_RTC_REG(x) (EP93XX_RTC_BASE + (x)) + #define EP93XX_RTC_DATA EP93XX_RTC_REG(0x0000) +@@ -37,16 +44,28 @@ static int ep93xx_get_swcomp(struct devi + + static int ep93xx_rtc_read_time(struct device *dev, struct rtc_time *tm) + { ++#if defined(CONFIG_RTC_DRV_EP93XX_DS1337) ++ /* Reroute the internal device to the DS1337 */ ++ return ds1337_do_command(0, DS1337_GET_DATE, (void *)tm); ++#else + unsigned long time = __raw_readl(EP93XX_RTC_DATA); + + rtc_time_to_tm(time, tm); + return 0; ++#endif + } + + static int ep93xx_rtc_set_mmss(struct device *dev, unsigned long secs) + { ++#if defined(CONFIG_RTC_DRV_EP93XX_DS1337) ++ struct rtc_time tm; ++ ++ rtc_time_to_tm(secs, &tm); ++ return ds1337_do_command(0, DS1337_SET_DATE, (void *)&tm); ++#else + __raw_writel(secs + 1, EP93XX_RTC_LOAD); + return 0; ++#endif + } + + static int ep93xx_rtc_proc(struct device *dev, struct seq_file *seq) |