Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 1 | /* |
| 2 | * linux/arch/arm/mach-omap2/timer-gp.c |
| 3 | * |
| 4 | * OMAP2 GP timer support. |
| 5 | * |
Paul Walmsley | f248076 | 2009-04-23 21:11:10 -0600 | [diff] [blame] | 6 | * Copyright (C) 2009 Nokia Corporation |
| 7 | * |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 8 | * Update to use new clocksource/clockevent layers |
| 9 | * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com> |
| 10 | * Copyright (C) 2007 MontaVista Software, Inc. |
| 11 | * |
| 12 | * Original driver: |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 13 | * Copyright (C) 2005 Nokia Corporation |
| 14 | * Author: Paul Mundt <paul.mundt@nokia.com> |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 15 | * Juha Yrjölä <juha.yrjola@nokia.com> |
Timo Teras | 77900a2 | 2006-06-26 16:16:12 -0700 | [diff] [blame] | 16 | * OMAP Dual-mode timer framework support by Timo Teras |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 17 | * |
| 18 | * Some parts based off of TI's 24xx code: |
| 19 | * |
Santosh Shilimkar | 4416907 | 2009-05-28 14:16:04 -0700 | [diff] [blame] | 20 | * Copyright (C) 2004-2009 Texas Instruments, Inc. |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 21 | * |
| 22 | * Roughly modelled after the OMAP1 MPU timer code. |
Santosh Shilimkar | 4416907 | 2009-05-28 14:16:04 -0700 | [diff] [blame] | 23 | * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com> |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 24 | * |
| 25 | * This file is subject to the terms and conditions of the GNU General Public |
| 26 | * License. See the file "COPYING" in the main directory of this archive |
| 27 | * for more details. |
| 28 | */ |
| 29 | #include <linux/init.h> |
| 30 | #include <linux/time.h> |
| 31 | #include <linux/interrupt.h> |
| 32 | #include <linux/err.h> |
Russell King | f8ce254 | 2006-01-07 16:15:52 +0000 | [diff] [blame] | 33 | #include <linux/clk.h> |
Timo Teras | 77900a2 | 2006-06-26 16:16:12 -0700 | [diff] [blame] | 34 | #include <linux/delay.h> |
Dirk Behme | e668729 | 2006-12-06 17:14:00 -0800 | [diff] [blame] | 35 | #include <linux/irq.h> |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 36 | #include <linux/clocksource.h> |
| 37 | #include <linux/clockchips.h> |
Russell King | f8ce254 | 2006-01-07 16:15:52 +0000 | [diff] [blame] | 38 | |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 39 | #include <asm/mach/time.h> |
Tony Lindgren | ce491cf | 2009-10-20 09:40:47 -0700 | [diff] [blame] | 40 | #include <plat/dmtimer.h> |
Santosh Shilimkar | 39e1d4c | 2009-04-28 20:52:00 +0530 | [diff] [blame] | 41 | #include <asm/localtimer.h> |
Paul Walmsley | cbc9438 | 2011-02-22 19:59:49 -0700 | [diff] [blame] | 42 | #include <asm/sched_clock.h> |
Paul Walmsley | 38698be | 2011-02-23 00:14:08 -0700 | [diff] [blame] | 43 | #include <plat/common.h> |
| 44 | #include <plat/omap_hwmod.h> |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 45 | |
Manjunath Kondaiah G | 04aeae7 | 2010-10-08 09:58:35 -0700 | [diff] [blame] | 46 | #include "timer-gp.h" |
| 47 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 48 | /* Parent clocks, eventually these will come from the clock framework */ |
| 49 | |
| 50 | #define OMAP2_MPU_SOURCE "sys_ck" |
| 51 | #define OMAP3_MPU_SOURCE OMAP2_MPU_SOURCE |
| 52 | #define OMAP4_MPU_SOURCE "sys_clkin_ck" |
| 53 | #define OMAP2_32K_SOURCE "func_32k_ck" |
| 54 | #define OMAP3_32K_SOURCE "omap_32k_fck" |
| 55 | #define OMAP4_32K_SOURCE "sys_32k_ck" |
| 56 | |
| 57 | #ifdef CONFIG_OMAP_32K_TIMER |
| 58 | #define OMAP2_CLKEV_SOURCE OMAP2_32K_SOURCE |
| 59 | #define OMAP3_CLKEV_SOURCE OMAP3_32K_SOURCE |
| 60 | #define OMAP4_CLKEV_SOURCE OMAP4_32K_SOURCE |
| 61 | #define OMAP3_SECURE_TIMER 12 |
| 62 | #else |
| 63 | #define OMAP2_CLKEV_SOURCE OMAP2_MPU_SOURCE |
| 64 | #define OMAP3_CLKEV_SOURCE OMAP3_MPU_SOURCE |
| 65 | #define OMAP4_CLKEV_SOURCE OMAP4_MPU_SOURCE |
| 66 | #define OMAP3_SECURE_TIMER 1 |
| 67 | #endif |
Paul Walmsley | d8328f3 | 2011-01-15 21:32:01 -0700 | [diff] [blame] | 68 | |
Paul Walmsley | f248076 | 2009-04-23 21:11:10 -0600 | [diff] [blame] | 69 | /* MAX_GPTIMER_ID: number of GPTIMERs on the chip */ |
| 70 | #define MAX_GPTIMER_ID 12 |
| 71 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 72 | /* Clockevent code */ |
| 73 | |
| 74 | static struct omap_dm_timer clkev; |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 75 | static struct clock_event_device clockevent_gpt; |
Paul Walmsley | f248076 | 2009-04-23 21:11:10 -0600 | [diff] [blame] | 76 | static u8 __initdata gptimer_id = 1; |
| 77 | static u8 __initdata inited; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 78 | |
Linus Torvalds | 0cd61b6 | 2006-10-06 10:53:39 -0700 | [diff] [blame] | 79 | static irqreturn_t omap2_gp_timer_interrupt(int irq, void *dev_id) |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 80 | { |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 81 | struct clock_event_device *evt = &clockevent_gpt; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 82 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 83 | __omap_dm_timer_write_status(clkev.io_base, OMAP_TIMER_INT_OVERFLOW); |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 84 | |
| 85 | evt->event_handler(evt); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 86 | return IRQ_HANDLED; |
| 87 | } |
| 88 | |
| 89 | static struct irqaction omap2_gp_timer_irq = { |
| 90 | .name = "gp timer", |
Bernhard Walle | b30faba | 2007-05-08 00:35:39 -0700 | [diff] [blame] | 91 | .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 92 | .handler = omap2_gp_timer_interrupt, |
| 93 | }; |
| 94 | |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 95 | static int omap2_gp_timer_set_next_event(unsigned long cycles, |
| 96 | struct clock_event_device *evt) |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 97 | { |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 98 | __omap_dm_timer_load_start(clkev.io_base, OMAP_TIMER_CTRL_ST, |
| 99 | 0xffffffff - cycles, 1); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 100 | |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 101 | return 0; |
| 102 | } |
| 103 | |
| 104 | static void omap2_gp_timer_set_mode(enum clock_event_mode mode, |
| 105 | struct clock_event_device *evt) |
| 106 | { |
| 107 | u32 period; |
| 108 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 109 | __omap_dm_timer_stop(clkev.io_base, 1, clkev.rate); |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 110 | |
| 111 | switch (mode) { |
| 112 | case CLOCK_EVT_MODE_PERIODIC: |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 113 | period = clkev.rate / HZ; |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 114 | period -= 1; |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 115 | /* Looks like we need to first set the load value separately */ |
| 116 | __omap_dm_timer_write(clkev.io_base, OMAP_TIMER_LOAD_REG, |
| 117 | 0xffffffff - period, 1); |
| 118 | __omap_dm_timer_load_start(clkev.io_base, |
| 119 | OMAP_TIMER_CTRL_AR | OMAP_TIMER_CTRL_ST, |
| 120 | 0xffffffff - period, 1); |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 121 | break; |
| 122 | case CLOCK_EVT_MODE_ONESHOT: |
| 123 | break; |
| 124 | case CLOCK_EVT_MODE_UNUSED: |
| 125 | case CLOCK_EVT_MODE_SHUTDOWN: |
| 126 | case CLOCK_EVT_MODE_RESUME: |
| 127 | break; |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | static struct clock_event_device clockevent_gpt = { |
| 132 | .name = "gp timer", |
| 133 | .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT, |
| 134 | .shift = 32, |
| 135 | .set_next_event = omap2_gp_timer_set_next_event, |
| 136 | .set_mode = omap2_gp_timer_set_mode, |
| 137 | }; |
| 138 | |
Paul Walmsley | f248076 | 2009-04-23 21:11:10 -0600 | [diff] [blame] | 139 | /** |
| 140 | * omap2_gp_clockevent_set_gptimer - set which GPTIMER is used for clockevents |
| 141 | * @id: GPTIMER to use (1..MAX_GPTIMER_ID) |
| 142 | * |
| 143 | * Define the GPTIMER that the system should use for the tick timer. |
| 144 | * Meant to be called from board-*.c files in the event that GPTIMER1, the |
| 145 | * default, is unsuitable. Returns -EINVAL on error or 0 on success. |
| 146 | */ |
| 147 | int __init omap2_gp_clockevent_set_gptimer(u8 id) |
| 148 | { |
| 149 | if (id < 1 || id > MAX_GPTIMER_ID) |
| 150 | return -EINVAL; |
| 151 | |
| 152 | BUG_ON(inited); |
| 153 | |
| 154 | gptimer_id = id; |
| 155 | |
| 156 | return 0; |
| 157 | } |
| 158 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 159 | static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer, |
| 160 | int gptimer_id, |
| 161 | const char *fck_source) |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 162 | { |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 163 | char name[10]; /* 10 = sizeof("gptXX_Xck0") */ |
| 164 | struct omap_hwmod *oh; |
| 165 | size_t size; |
| 166 | int res = 0; |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 167 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 168 | sprintf(name, "timer%d", gptimer_id); |
| 169 | omap_hwmod_setup_one(name); |
| 170 | oh = omap_hwmod_lookup(name); |
| 171 | if (!oh) |
| 172 | return -ENODEV; |
Paul Walmsley | f248076 | 2009-04-23 21:11:10 -0600 | [diff] [blame] | 173 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 174 | timer->irq = oh->mpu_irqs[0].irq; |
| 175 | timer->phys_base = oh->slaves[0]->addr->pa_start; |
| 176 | size = oh->slaves[0]->addr->pa_end - timer->phys_base; |
| 177 | |
| 178 | /* Static mapping, never released */ |
| 179 | timer->io_base = ioremap(timer->phys_base, size); |
| 180 | if (!timer->io_base) |
| 181 | return -ENXIO; |
| 182 | |
| 183 | /* After the dmtimer is using hwmod these clocks won't be needed */ |
| 184 | sprintf(name, "gpt%d_fck", gptimer_id); |
| 185 | timer->fclk = clk_get(NULL, name); |
| 186 | if (IS_ERR(timer->fclk)) |
| 187 | return -ENODEV; |
| 188 | |
| 189 | sprintf(name, "gpt%d_ick", gptimer_id); |
| 190 | timer->iclk = clk_get(NULL, name); |
| 191 | if (IS_ERR(timer->iclk)) { |
| 192 | clk_put(timer->fclk); |
| 193 | return -ENODEV; |
| 194 | } |
| 195 | |
| 196 | omap_hwmod_enable(oh); |
| 197 | |
| 198 | if (gptimer_id != 12) { |
| 199 | struct clk *src; |
| 200 | |
| 201 | src = clk_get(NULL, fck_source); |
| 202 | if (IS_ERR(src)) { |
| 203 | res = -EINVAL; |
| 204 | } else { |
| 205 | res = __omap_dm_timer_set_source(timer->fclk, src); |
| 206 | if (IS_ERR_VALUE(res)) |
| 207 | pr_warning("%s: timer%i cannot set source\n", |
| 208 | __func__, gptimer_id); |
| 209 | clk_put(src); |
| 210 | } |
| 211 | } |
| 212 | __omap_dm_timer_reset(timer->io_base, 1, 1); |
| 213 | timer->posted = 1; |
| 214 | |
| 215 | timer->rate = clk_get_rate(timer->fclk); |
| 216 | |
| 217 | timer->reserved = 1; |
Paul Walmsley | 38698be | 2011-02-23 00:14:08 -0700 | [diff] [blame] | 218 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 219 | return res; |
| 220 | } |
Paul Walmsley | f248076 | 2009-04-23 21:11:10 -0600 | [diff] [blame] | 221 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 222 | static void __init omap2_gp_clockevent_init(int gptimer_id, |
| 223 | const char *fck_source) |
| 224 | { |
| 225 | int res; |
Paul Walmsley | f248076 | 2009-04-23 21:11:10 -0600 | [diff] [blame] | 226 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 227 | inited = 1; |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 228 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 229 | res = omap_dm_timer_init_one(&clkev, gptimer_id, fck_source); |
| 230 | BUG_ON(res); |
Paul Walmsley | f248076 | 2009-04-23 21:11:10 -0600 | [diff] [blame] | 231 | |
Tony Lindgren | 98e182a | 2011-03-29 15:54:49 -0700 | [diff] [blame^] | 232 | omap2_gp_timer_irq.dev_id = (void *)&clkev; |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 233 | setup_irq(clkev.irq, &omap2_gp_timer_irq); |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 234 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 235 | __omap_dm_timer_int_enable(clkev.io_base, OMAP_TIMER_INT_OVERFLOW); |
| 236 | |
| 237 | clockevent_gpt.mult = div_sc(clkev.rate, NSEC_PER_SEC, |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 238 | clockevent_gpt.shift); |
| 239 | clockevent_gpt.max_delta_ns = |
| 240 | clockevent_delta2ns(0xffffffff, &clockevent_gpt); |
| 241 | clockevent_gpt.min_delta_ns = |
Aaro Koskinen | df88acb | 2009-01-29 08:57:17 -0800 | [diff] [blame] | 242 | clockevent_delta2ns(3, &clockevent_gpt); |
| 243 | /* Timer internal resynch latency. */ |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 244 | |
Rusty Russell | 320ab2b | 2008-12-13 21:20:26 +1030 | [diff] [blame] | 245 | clockevent_gpt.cpumask = cpumask_of(0); |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 246 | clockevents_register_device(&clockevent_gpt); |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 247 | |
| 248 | pr_info("OMAP clockevent source: GPTIMER%d at %lu Hz\n", |
| 249 | gptimer_id, clkev.rate); |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 250 | } |
| 251 | |
Paul Walmsley | f248076 | 2009-04-23 21:11:10 -0600 | [diff] [blame] | 252 | /* Clocksource code */ |
| 253 | |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 254 | #ifdef CONFIG_OMAP_32K_TIMER |
| 255 | /* |
| 256 | * When 32k-timer is enabled, don't use GPTimer for clocksource |
| 257 | * instead, just leave default clocksource which uses the 32k |
Paul Walmsley | d8328f3 | 2011-01-15 21:32:01 -0700 | [diff] [blame] | 258 | * sync counter. See clocksource setup in plat-omap/counter_32k.c |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 259 | */ |
| 260 | |
Paul Walmsley | d8328f3 | 2011-01-15 21:32:01 -0700 | [diff] [blame] | 261 | static void __init omap2_gp_clocksource_init(void) |
| 262 | { |
| 263 | omap_init_clocksource_32k(); |
| 264 | } |
| 265 | |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 266 | #else |
| 267 | /* |
| 268 | * clocksource |
| 269 | */ |
Paul Walmsley | cbc9438 | 2011-02-22 19:59:49 -0700 | [diff] [blame] | 270 | static DEFINE_CLOCK_DATA(cd); |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 271 | static struct omap_dm_timer *gpt_clocksource; |
Magnus Damm | 8e19608 | 2009-04-21 12:24:00 -0700 | [diff] [blame] | 272 | static cycle_t clocksource_read_cycles(struct clocksource *cs) |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 273 | { |
| 274 | return (cycle_t)omap_dm_timer_read_counter(gpt_clocksource); |
| 275 | } |
| 276 | |
| 277 | static struct clocksource clocksource_gpt = { |
| 278 | .name = "gp timer", |
| 279 | .rating = 300, |
| 280 | .read = clocksource_read_cycles, |
| 281 | .mask = CLOCKSOURCE_MASK(32), |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 282 | .flags = CLOCK_SOURCE_IS_CONTINUOUS, |
| 283 | }; |
| 284 | |
Paul Walmsley | cbc9438 | 2011-02-22 19:59:49 -0700 | [diff] [blame] | 285 | static void notrace dmtimer_update_sched_clock(void) |
| 286 | { |
| 287 | u32 cyc; |
| 288 | |
| 289 | cyc = omap_dm_timer_read_counter(gpt_clocksource); |
| 290 | |
| 291 | update_sched_clock(&cd, cyc, (u32)~0); |
| 292 | } |
| 293 | |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 294 | /* Setup free-running counter for clocksource */ |
| 295 | static void __init omap2_gp_clocksource_init(void) |
| 296 | { |
| 297 | static struct omap_dm_timer *gpt; |
Aaro Koskinen | 2862945 | 2010-11-18 19:59:51 +0200 | [diff] [blame] | 298 | u32 tick_rate; |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 299 | static char err1[] __initdata = KERN_ERR |
| 300 | "%s: failed to request dm-timer\n"; |
| 301 | static char err2[] __initdata = KERN_ERR |
| 302 | "%s: can't register clocksource!\n"; |
| 303 | |
| 304 | gpt = omap_dm_timer_request(); |
| 305 | if (!gpt) |
| 306 | printk(err1, clocksource_gpt.name); |
| 307 | gpt_clocksource = gpt; |
| 308 | |
| 309 | omap_dm_timer_set_source(gpt, OMAP_TIMER_SRC_SYS_CLK); |
| 310 | tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gpt)); |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 311 | |
Richard Woodruff | 3fddd09 | 2008-07-03 12:24:30 +0300 | [diff] [blame] | 312 | omap_dm_timer_set_load_start(gpt, 1, 0); |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 313 | |
Paul Walmsley | cbc9438 | 2011-02-22 19:59:49 -0700 | [diff] [blame] | 314 | init_sched_clock(&cd, dmtimer_update_sched_clock, 32, tick_rate); |
| 315 | |
Russell King | 8437c25 | 2010-12-13 13:18:44 +0000 | [diff] [blame] | 316 | if (clocksource_register_hz(&clocksource_gpt, tick_rate)) |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 317 | printk(err2, clocksource_gpt.name); |
| 318 | } |
| 319 | #endif |
| 320 | |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 321 | #define OMAP_SYS_TIMER_INIT(name, clkev_nr, clkev_src) \ |
Tony Lindgren | e74984e | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 322 | static void __init omap##name##_timer_init(void) \ |
| 323 | { \ |
| 324 | omap_dm_timer_init(); \ |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 325 | omap2_gp_clockevent_init((clkev_nr), clkev_src); \ |
Tony Lindgren | e74984e | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 326 | omap2_gp_clocksource_init(); \ |
| 327 | } |
| 328 | |
| 329 | #define OMAP_SYS_TIMER(name) \ |
| 330 | struct sys_timer omap##name##_timer = { \ |
| 331 | .init = omap##name##_timer_init, \ |
| 332 | }; |
| 333 | |
| 334 | #ifdef CONFIG_ARCH_OMAP2 |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 335 | OMAP_SYS_TIMER_INIT(2, 1, OMAP2_CLKEV_SOURCE) |
Tony Lindgren | e74984e | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 336 | OMAP_SYS_TIMER(2) |
| 337 | #endif |
| 338 | |
| 339 | #ifdef CONFIG_ARCH_OMAP3 |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 340 | OMAP_SYS_TIMER_INIT(3, 1, OMAP3_CLKEV_SOURCE) |
Tony Lindgren | e74984e | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 341 | OMAP_SYS_TIMER(3) |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 342 | OMAP_SYS_TIMER_INIT(3_secure, OMAP3_SECURE_TIMER, OMAP3_CLKEV_SOURCE) |
Tony Lindgren | e74984e | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 343 | OMAP_SYS_TIMER(3_secure) |
| 344 | #endif |
| 345 | |
| 346 | #ifdef CONFIG_ARCH_OMAP4 |
| 347 | static void __init omap4_timer_init(void) |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 348 | { |
Santosh Shilimkar | 39e1d4c | 2009-04-28 20:52:00 +0530 | [diff] [blame] | 349 | #ifdef CONFIG_LOCAL_TIMERS |
Tony Lindgren | e74984e | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 350 | twd_base = ioremap(OMAP44XX_LOCAL_TWD_BASE, SZ_256); |
| 351 | BUG_ON(!twd_base); |
Santosh Shilimkar | 39e1d4c | 2009-04-28 20:52:00 +0530 | [diff] [blame] | 352 | #endif |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 353 | omap_dm_timer_init(); |
Tony Lindgren | aa56188 | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 354 | omap2_gp_clockevent_init(1, OMAP4_CLKEV_SOURCE); |
Kevin Hilman | 5a3a388 | 2007-11-12 23:24:02 -0800 | [diff] [blame] | 355 | omap2_gp_clocksource_init(); |
Tony Lindgren | 1dbae81 | 2005-11-10 14:26:51 +0000 | [diff] [blame] | 356 | } |
Tony Lindgren | e74984e | 2011-03-29 15:54:48 -0700 | [diff] [blame] | 357 | OMAP_SYS_TIMER(4) |
| 358 | #endif |