Lines Matching +full:cs +full:- +full:enable +full:- +full:shift

1 // SPDX-License-Identifier: GPL-2.0-or-later
6  * high-resolution timer.  The Geode SC-1100 (at least) has a buggy
8  * given as a boot-arg. In its absence, the Generic Timekeeping code
9  * will detect and de-rate the bad TSC, allowing this timer to take
12  * Based on work by John Stultz, and Ted Phelps (in a 2.6.12-rc6 patch)
29 MODULE_PARM_DESC(ppm, "+-adjust to actual XO freq (ppm)");
35 #define HR_TMEN (1 << 0)	/* timer interrupt enable */
37 #define HR_TM27MPD (1 << 2)	/* 1 turns off input clock (power-down) */
42 static u64 read_hrt(struct clocksource *cs)  in read_hrt()  argument
54 	/* mult, shift are set based on mhz27 flag */
63 		return -ENODEV;  in init_hrt_clocksource()
65 	/* Reserve the timer's ISA io-region for ourselves */  in init_hrt_clocksource()
68 			    "NatSemi SCx200 High-Resolution Timer")) {  in init_hrt_clocksource()
70 		return -ENODEV;  in init_hrt_clocksource()
81 	pr_info("enabling scx200 high-res timer (%s MHz +%d ppm)\n", mhz27 ? "27":"1", ppm);  in init_hrt_clocksource()