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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /drivers/clocksource/timer-sp.h | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/clocksource/timer-sp.h')
-rw-r--r-- | drivers/clocksource/timer-sp.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/clocksource/timer-sp.h b/drivers/clocksource/timer-sp.h new file mode 100644 index 000000000..811f840be --- /dev/null +++ b/drivers/clocksource/timer-sp.h @@ -0,0 +1,63 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * ARM timer implementation, found in Integrator, Versatile and Realview + * platforms. Not all platforms support all registers and bits in these + * registers, so we mark them with A for Integrator AP, C for Integrator + * CP, V for Versatile and R for Realview. + * + * Integrator AP has 16-bit timers, Integrator CP, Versatile and Realview + * can have 16-bit or 32-bit selectable via a bit in the control register. + * + * Every SP804 contains two identical timers. + */ +#define NR_TIMERS 2 +#define TIMER_1_BASE 0x00 +#define TIMER_2_BASE 0x20 + +#define TIMER_LOAD 0x00 /* ACVR rw */ +#define TIMER_VALUE 0x04 /* ACVR ro */ +#define TIMER_CTRL 0x08 /* ACVR rw */ +#define TIMER_CTRL_ONESHOT (1 << 0) /* CVR */ +#define TIMER_CTRL_32BIT (1 << 1) /* CVR */ +#define TIMER_CTRL_DIV1 (0 << 2) /* ACVR */ +#define TIMER_CTRL_DIV16 (1 << 2) /* ACVR */ +#define TIMER_CTRL_DIV256 (2 << 2) /* ACVR */ +#define TIMER_CTRL_IE (1 << 5) /* VR */ +#define TIMER_CTRL_PERIODIC (1 << 6) /* ACVR */ +#define TIMER_CTRL_ENABLE (1 << 7) /* ACVR */ + +#define TIMER_INTCLR 0x0c /* ACVR wo */ +#define TIMER_RIS 0x10 /* CVR ro */ +#define TIMER_MIS 0x14 /* CVR ro */ +#define TIMER_BGLOAD 0x18 /* CVR rw */ + +struct sp804_timer { + int load; + int load_h; + int value; + int value_h; + int ctrl; + int intclr; + int ris; + int mis; + int bgload; + int bgload_h; + int timer_base[NR_TIMERS]; + int width; +}; + +struct sp804_clkevt { + void __iomem *base; + void __iomem *load; + void __iomem *load_h; + void __iomem *value; + void __iomem *value_h; + void __iomem *ctrl; + void __iomem *intclr; + void __iomem *ris; + void __iomem *mis; + void __iomem *bgload; + void __iomem *bgload_h; + unsigned long reload; + int width; +}; |