| Message ID | 1425570594-13124-3-git-send-email-alexandre.belloni@free-electrons.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Headers | show |
On Thu, 05 Mar 2015, Alexandre Belloni wrote: > AT91RM920 has a memory range reserved for timer and watchdog configuration. > Expose those registers so that drivers can make use of the system timer syscon > declared in at91 DTs. > > Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> > --- > include/linux/mfd/syscon/atmel-st.h | 49 +++++++++++++++++++++++++++++++++++++ > 1 file changed, 49 insertions(+) > create mode 100644 include/linux/mfd/syscon/atmel-st.h > > diff --git a/include/linux/mfd/syscon/atmel-st.h b/include/linux/mfd/syscon/atmel-st.h > new file mode 100644 > index 000000000000..93c7affc2809 > --- /dev/null > +++ b/include/linux/mfd/syscon/atmel-st.h > @@ -0,0 +1,49 @@ > +/* > + * Copyright (C) 2005 Ivan Kokshaysky > + * Copyright (C) SAN People > + * > + * System Timer (ST) - System peripherals registers. > + * Based on AT91RM9200 datasheet revision E. > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation; either version 2 of the License, or > + * (at your option) any later version. > + */ > + > +#ifndef _LINUX_MFD_SYSCON_ATMEL_ST_H > +#define _LINUX_MFD_SYSCON_ATMEL_ST_H > + > +#include <linux/bitops.h> > + > +#define AT91_ST_CR 0x00 /* Control Register */ > +#define AT91_ST_WDRST BIT(0) /* Watchdog Timer Restart */ Sorry for the incremental reviews, I'm exceptionally busy of late. The next white space character after #define should be a humble space. ... at least for the register defines. The bit assignments can be tabbed out to denote what they are. Once fixed, please resend with my: Acked-by: Lee Jones <lee.jones@linaro.org> > +#define AT91_ST_PIMR 0x04 /* Period Interval Mode Register */ > +#define AT91_ST_PIV 0xffff /* Period Interval Value */ > + > +#define AT91_ST_WDMR 0x08 /* Watchdog Mode Register */ > +#define AT91_ST_WDV 0xffff /* Watchdog Counter Value */ > +#define AT91_ST_RSTEN BIT(16) /* Reset Enable */ > +#define AT91_ST_EXTEN BIT(17) /* External Signal Assertion Enable */ > + > +#define AT91_ST_RTMR 0x0c /* Real-time Mode Register */ > +#define AT91_ST_RTPRES 0xffff /* Real-time Prescalar Value */ > + > +#define AT91_ST_SR 0x10 /* Status Register */ > +#define AT91_ST_PITS BIT(0) /* Period Interval Timer Status */ > +#define AT91_ST_WDOVF BIT(1) /* Watchdog Overflow */ > +#define AT91_ST_RTTINC BIT(2) /* Real-time Timer Increment */ > +#define AT91_ST_ALMS BIT(3) /* Alarm Status */ > + > +#define AT91_ST_IER 0x14 /* Interrupt Enable Register */ > +#define AT91_ST_IDR 0x18 /* Interrupt Disable Register */ > +#define AT91_ST_IMR 0x1c /* Interrupt Mask Register */ > + > +#define AT91_ST_RTAR 0x20 /* Real-time Alarm Register */ > +#define AT91_ST_ALMV 0xfffff /* Alarm Value */ > + > +#define AT91_ST_CRTR 0x24 /* Current Real-time Register */ > +#define AT91_ST_CRTV 0xfffff /* Current Real-Time Value */ > + > +#endif /* _LINUX_MFD_SYSCON_ATMEL_ST_H */
diff --git a/include/linux/mfd/syscon/atmel-st.h b/include/linux/mfd/syscon/atmel-st.h new file mode 100644 index 000000000000..93c7affc2809 --- /dev/null +++ b/include/linux/mfd/syscon/atmel-st.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2005 Ivan Kokshaysky + * Copyright (C) SAN People + * + * System Timer (ST) - System peripherals registers. + * Based on AT91RM9200 datasheet revision E. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef _LINUX_MFD_SYSCON_ATMEL_ST_H +#define _LINUX_MFD_SYSCON_ATMEL_ST_H + +#include <linux/bitops.h> + +#define AT91_ST_CR 0x00 /* Control Register */ +#define AT91_ST_WDRST BIT(0) /* Watchdog Timer Restart */ + +#define AT91_ST_PIMR 0x04 /* Period Interval Mode Register */ +#define AT91_ST_PIV 0xffff /* Period Interval Value */ + +#define AT91_ST_WDMR 0x08 /* Watchdog Mode Register */ +#define AT91_ST_WDV 0xffff /* Watchdog Counter Value */ +#define AT91_ST_RSTEN BIT(16) /* Reset Enable */ +#define AT91_ST_EXTEN BIT(17) /* External Signal Assertion Enable */ + +#define AT91_ST_RTMR 0x0c /* Real-time Mode Register */ +#define AT91_ST_RTPRES 0xffff /* Real-time Prescalar Value */ + +#define AT91_ST_SR 0x10 /* Status Register */ +#define AT91_ST_PITS BIT(0) /* Period Interval Timer Status */ +#define AT91_ST_WDOVF BIT(1) /* Watchdog Overflow */ +#define AT91_ST_RTTINC BIT(2) /* Real-time Timer Increment */ +#define AT91_ST_ALMS BIT(3) /* Alarm Status */ + +#define AT91_ST_IER 0x14 /* Interrupt Enable Register */ +#define AT91_ST_IDR 0x18 /* Interrupt Disable Register */ +#define AT91_ST_IMR 0x1c /* Interrupt Mask Register */ + +#define AT91_ST_RTAR 0x20 /* Real-time Alarm Register */ +#define AT91_ST_ALMV 0xfffff /* Alarm Value */ + +#define AT91_ST_CRTR 0x24 /* Current Real-time Register */ +#define AT91_ST_CRTV 0xfffff /* Current Real-Time Value */ + +#endif /* _LINUX_MFD_SYSCON_ATMEL_ST_H */
AT91RM920 has a memory range reserved for timer and watchdog configuration. Expose those registers so that drivers can make use of the system timer syscon declared in at91 DTs. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> --- include/linux/mfd/syscon/atmel-st.h | 49 +++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 include/linux/mfd/syscon/atmel-st.h