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- /* 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;
- };
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