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authorJonas Aaberg <jonas.aberg@stericsson.com>2011-09-20 05:18:27 -0400
committerLinus Walleij <linus.walleij@linaro.org>2011-09-22 09:44:17 -0400
commit05387a9fbf334174e0f84fa77e493c1a804993c9 (patch)
treea8516b1b99e551e5b6ad002f29634825bbc6f641 /arch/arm/plat-nomadik
parent2f73a06843e357190a7a3924c7afb0534cf6adef (diff)
ARM: plat-nomadik: timer: Export reset functions
We make the reset function from the driver public, then we also move of all register defines from the public header file into driver, where they belong. Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/plat-nomadik')
-rw-r--r--arch/arm/plat-nomadik/include/plat/mtu.h47
-rw-r--r--arch/arm/plat-nomadik/timer.c50
2 files changed, 49 insertions, 48 deletions
diff --git a/arch/arm/plat-nomadik/include/plat/mtu.h b/arch/arm/plat-nomadik/include/plat/mtu.h
index 65704a3d4241..6508e7694a4b 100644
--- a/arch/arm/plat-nomadik/include/plat/mtu.h
+++ b/arch/arm/plat-nomadik/include/plat/mtu.h
@@ -1,54 +1,11 @@
1#ifndef __PLAT_MTU_H 1#ifndef __PLAT_MTU_H
2#define __PLAT_MTU_H 2#define __PLAT_MTU_H
3 3
4/*
5 * Guaranteed runtime conversion range in seconds for
6 * the clocksource and clockevent.
7 */
8#define MTU_MIN_RANGE 4
9
10/* should be set by the platform code */ 4/* should be set by the platform code */
11extern void __iomem *mtu_base; 5extern void __iomem *mtu_base;
12 6
13/* 7void nmdk_clkevt_reset(void);
14 * The MTU device hosts four different counters, with 4 set of 8void nmdk_clksrc_reset(void);
15 * registers. These are register names.
16 */
17
18#define MTU_IMSC 0x00 /* Interrupt mask set/clear */
19#define MTU_RIS 0x04 /* Raw interrupt status */
20#define MTU_MIS 0x08 /* Masked interrupt status */
21#define MTU_ICR 0x0C /* Interrupt clear register */
22
23/* per-timer registers take 0..3 as argument */
24#define MTU_LR(x) (0x10 + 0x10 * (x) + 0x00) /* Load value */
25#define MTU_VAL(x) (0x10 + 0x10 * (x) + 0x04) /* Current value */
26#define MTU_CR(x) (0x10 + 0x10 * (x) + 0x08) /* Control reg */
27#define MTU_BGLR(x) (0x10 + 0x10 * (x) + 0x0c) /* At next overflow */
28
29/* bits for the control register */
30#define MTU_CRn_ENA 0x80
31#define MTU_CRn_PERIODIC 0x40 /* if 0 = free-running */
32#define MTU_CRn_PRESCALE_MASK 0x0c
33#define MTU_CRn_PRESCALE_1 0x00
34#define MTU_CRn_PRESCALE_16 0x04
35#define MTU_CRn_PRESCALE_256 0x08
36#define MTU_CRn_32BITS 0x02
37#define MTU_CRn_ONESHOT 0x01 /* if 0 = wraps reloading from BGLR*/
38
39/* Other registers are usual amba/primecell registers, currently not used */
40#define MTU_ITCR 0xff0
41#define MTU_ITOP 0xff4
42
43#define MTU_PERIPH_ID0 0xfe0
44#define MTU_PERIPH_ID1 0xfe4
45#define MTU_PERIPH_ID2 0xfe8
46#define MTU_PERIPH_ID3 0xfeC
47
48#define MTU_PCELL0 0xff0
49#define MTU_PCELL1 0xff4
50#define MTU_PCELL2 0xff8
51#define MTU_PCELL3 0xffC
52 9
53#endif /* __PLAT_MTU_H */ 10#endif /* __PLAT_MTU_H */
54 11
diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c
index a04b5215b6d8..30b6433d910d 100644
--- a/arch/arm/plat-nomadik/timer.c
+++ b/arch/arm/plat-nomadik/timer.c
@@ -21,7 +21,51 @@
21#include <asm/mach/time.h> 21#include <asm/mach/time.h>
22#include <asm/sched_clock.h> 22#include <asm/sched_clock.h>
23 23
24#include <plat/mtu.h> 24/*
25 * Guaranteed runtime conversion range in seconds for
26 * the clocksource and clockevent.
27 */
28#define MTU_MIN_RANGE 4
29
30/*
31 * The MTU device hosts four different counters, with 4 set of
32 * registers. These are register names.
33 */
34
35#define MTU_IMSC 0x00 /* Interrupt mask set/clear */
36#define MTU_RIS 0x04 /* Raw interrupt status */
37#define MTU_MIS 0x08 /* Masked interrupt status */
38#define MTU_ICR 0x0C /* Interrupt clear register */
39
40/* per-timer registers take 0..3 as argument */
41#define MTU_LR(x) (0x10 + 0x10 * (x) + 0x00) /* Load value */
42#define MTU_VAL(x) (0x10 + 0x10 * (x) + 0x04) /* Current value */
43#define MTU_CR(x) (0x10 + 0x10 * (x) + 0x08) /* Control reg */
44#define MTU_BGLR(x) (0x10 + 0x10 * (x) + 0x0c) /* At next overflow */
45
46/* bits for the control register */
47#define MTU_CRn_ENA 0x80
48#define MTU_CRn_PERIODIC 0x40 /* if 0 = free-running */
49#define MTU_CRn_PRESCALE_MASK 0x0c
50#define MTU_CRn_PRESCALE_1 0x00
51#define MTU_CRn_PRESCALE_16 0x04
52#define MTU_CRn_PRESCALE_256 0x08
53#define MTU_CRn_32BITS 0x02
54#define MTU_CRn_ONESHOT 0x01 /* if 0 = wraps reloading from BGLR*/
55
56/* Other registers are usual amba/primecell registers, currently not used */
57#define MTU_ITCR 0xff0
58#define MTU_ITOP 0xff4
59
60#define MTU_PERIPH_ID0 0xfe0
61#define MTU_PERIPH_ID1 0xfe4
62#define MTU_PERIPH_ID2 0xfe8
63#define MTU_PERIPH_ID3 0xfeC
64
65#define MTU_PCELL0 0xff0
66#define MTU_PCELL1 0xff4
67#define MTU_PCELL2 0xff8
68#define MTU_PCELL3 0xffC
25 69
26static bool clkevt_periodic; 70static bool clkevt_periodic;
27static u32 clk_prescale; 71static u32 clk_prescale;
@@ -68,7 +112,7 @@ static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev)
68 return 0; 112 return 0;
69} 113}
70 114
71static void nmdk_clkevt_reset(void) 115void nmdk_clkevt_reset(void)
72{ 116{
73 if (clkevt_periodic) { 117 if (clkevt_periodic) {
74 118
@@ -138,7 +182,7 @@ static struct irqaction nmdk_timer_irq = {
138 .dev_id = &nmdk_clkevt, 182 .dev_id = &nmdk_clkevt,
139}; 183};
140 184
141static void nmdk_clksrc_reset(void) 185void nmdk_clksrc_reset(void)
142{ 186{
143 /* Disable */ 187 /* Disable */
144 writel(0, mtu_base + MTU_CR(0)); 188 writel(0, mtu_base + MTU_CR(0));