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Diffstat (limited to 'include/libchip/ds1375-rtc.h')
| -rw-r--r-- | include/libchip/ds1375-rtc.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/include/libchip/ds1375-rtc.h b/include/libchip/ds1375-rtc.h new file mode 100644 index 0000000000..a5be96293f --- /dev/null +++ b/include/libchip/ds1375-rtc.h @@ -0,0 +1,99 @@ +#ifndef DS1375_I2C_RTC_H +#define DS1375_I2C_RTC_H + +/* Driver for the Maxim 1375 i2c RTC (TOD only; very simple...) */ + +/* + * Authorship + * ---------- + * This software was created by + * + * Till Straumann <strauman@slac.stanford.edu>, 2005-2007, + * Stanford Linear Accelerator Center, Stanford University. + * + * Acknowledgement of sponsorship + * ------------------------------ + * The software was produced by + * the Stanford Linear Accelerator Center, Stanford University, + * under Contract DE-AC03-76SFO0515 with the Department of Energy. + * + * Government disclaimer of liability + * ---------------------------------- + * Neither the United States nor the United States Department of Energy, + * nor any of their employees, makes any warranty, express or implied, or + * assumes any legal liability or responsibility for the accuracy, + * completeness, or usefulness of any data, apparatus, product, or process + * disclosed, or represents that its use would not infringe privately owned + * rights. + * + * Stanford disclaimer of liability + * -------------------------------- + * Stanford University makes no representations or warranties, express or + * implied, nor assumes any liability for the use of this software. + * + * Stanford disclaimer of copyright + * -------------------------------- + * Stanford University, owner of the copyright, hereby disclaims its + * copyright and all other rights in this software. Hence, anyone may + * freely use it for any purpose without restriction. + * + * Maintenance of notices + * ---------------------- + * In the interest of clarity regarding the origin and status of this + * SLAC software, this and all the preceding Stanford University notices + * are to remain affixed to any copy or derivative of this software made + * or distributed by the recipient and are to be affixed to any copy of + * software made or distributed by the recipient that contains a copy or + * derivative of this software. + * + * ------------------ SLAC Software Notices, Set 4 OTT.002a, 2004 FEB 03 + */ + +#include <rtems.h> +#include <libchip/rtc.h> +#include <stdint.h> + +#ifdef __cplusplus +extern "C" { +#endif + +extern rtc_fns rtc_ds1375_fns; + +bool +rtc_ds1375_device_probe( int minor ); + +uint32_t +rtc_ds1375_get_register( uintptr_t port, uint8_t reg ); + +void +rtc_ds1375_set_register( uintptr_t port, uint8_t reg, uint32_t value ); + +/* + * BSP must supply string constant argument 'i2cname' which matches + * the registered device name of the raw i2c device (created with mknod). + * E.g., "/dev/i2c.ds1375-raw" + * + * NOTE: The i2c bus driver must already be up and 'i2cname' already + * be available when this ENTRY is registered or initialized. + * + * If you want to allow applications to add the RTC driver to + * the configuration table then the i2c subsystem must be + * initialized by the BSP from the predriver_hook. + */ +#define DS1375_RTC_TBL_ENTRY(i2cname) \ +{ \ + sDeviceName: "/dev/rtc", \ + deviceType: RTC_CUSTOM, \ + pDeviceFns: &rtc_ds1375_fns, \ + deviceProbe: rtc_ds1375_device_probe, \ + ulCtrlPort1: (uintptr_t)(i2cname), \ + ulDataPort: 0, \ + getRegister: rtc_ds1375_get_register, \ + setRegister: rtc_ds1375_set_register, \ +} + +#ifdef __cplusplus +} +#endif + +#endif |