4 * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
6 * Platform independent (i.MX1, i.MX2, i.MX3) definition for timer handling.
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
23 #ifndef __PLAT_MXC_TIMER_H
24 #define __PLAT_MXC_TIMER_H
26 #include <linux/clk.h>
27 #include <mach/hardware.h>
29 #ifdef CONFIG_ARCH_MX1
30 #define TIMER_BASE IO_ADDRESS(TIM1_BASE_ADDR)
31 #define TIMER_INTERRUPT TIM1_INT
33 #define TCTL_VAL TCTL_CLK_PCLK1
34 #define TCTL_IRQEN (1<<4)
35 #define TCTL_FRR (1<<8)
36 #define TCTL_CLK_PCLK1 (1<<1)
37 #define TCTL_CLK_PCLK1_4 (2<<1)
38 #define TCTL_CLK_TIN (3<<1)
39 #define TCTL_CLK_32 (4<<1)
42 #define MXC_TPRER 0x04
46 #define MXC_TSTAT 0x14
47 #define TSTAT_CAPT (1<<1)
48 #define TSTAT_COMP (1<<0)
50 static inline void gpt_irq_disable(void)
54 tmp = __raw_readl(TIMER_BASE + MXC_TCTL);
55 __raw_writel(tmp & ~TCTL_IRQEN, TIMER_BASE + MXC_TCTL);
58 static inline void gpt_irq_enable(void)
60 __raw_writel(__raw_readl(TIMER_BASE + MXC_TCTL) | TCTL_IRQEN,
61 TIMER_BASE + MXC_TCTL);
64 static void gpt_irq_acknowledge(void)
66 __raw_writel(0, TIMER_BASE + MXC_TSTAT);
68 #endif /* CONFIG_ARCH_MX1 */
70 #ifdef CONFIG_ARCH_MX2
71 #define TIMER_BASE IO_ADDRESS(GPT1_BASE_ADDR)
72 #define TIMER_INTERRUPT MXC_INT_GPT1
75 #define TCTL_VAL TCTL_CLK_PCLK1
76 #define TCTL_CLK_PCLK1 (1<<1)
77 #define TCTL_CLK_PCLK1_4 (2<<1)
78 #define TCTL_IRQEN (1<<4)
79 #define TCTL_FRR (1<<8)
80 #define MXC_TPRER 0x04
84 #define MXC_TSTAT 0x14
85 #define TSTAT_CAPT (1<<1)
86 #define TSTAT_COMP (1<<0)
88 static inline void gpt_irq_disable(void)
92 tmp = __raw_readl(TIMER_BASE + MXC_TCTL);
93 __raw_writel(tmp & ~TCTL_IRQEN, TIMER_BASE + MXC_TCTL);
96 static inline void gpt_irq_enable(void)
98 __raw_writel(__raw_readl(TIMER_BASE + MXC_TCTL) | TCTL_IRQEN,
99 TIMER_BASE + MXC_TCTL);
102 static void gpt_irq_acknowledge(void)
104 __raw_writel(TSTAT_CAPT | TSTAT_COMP, TIMER_BASE + MXC_TSTAT);
106 #endif /* CONFIG_ARCH_MX2 */
108 #ifdef CONFIG_ARCH_MX3
109 #define TIMER_BASE IO_ADDRESS(GPT1_BASE_ADDR)
110 #define TIMER_INTERRUPT MXC_INT_GPT
112 #define MXC_TCTL 0x00
113 #define TCTL_VAL (TCTL_CLK_IPG | TCTL_WAITEN)
114 #define TCTL_CLK_IPG (1<<6)
115 #define TCTL_FRR (1<<9)
116 #define TCTL_WAITEN (1<<3)
118 #define MXC_TPRER 0x04
119 #define MXC_TSTAT 0x08
120 #define TSTAT_OF1 (1<<0)
121 #define TSTAT_OF2 (1<<1)
122 #define TSTAT_OF3 (1<<2)
123 #define TSTAT_IF1 (1<<3)
124 #define TSTAT_IF2 (1<<4)
125 #define TSTAT_ROV (1<<5)
127 #define MXC_TCMP 0x10
128 #define MXC_TCMP2 0x14
129 #define MXC_TCMP3 0x18
133 static inline void gpt_irq_disable(void)
135 __raw_writel(0, TIMER_BASE + MXC_IR);
138 static inline void gpt_irq_enable(void)
140 __raw_writel(1<<0, TIMER_BASE + MXC_IR);
143 static inline void gpt_irq_acknowledge(void)
145 __raw_writel(TSTAT_OF1, TIMER_BASE + MXC_TSTAT);
147 #endif /* CONFIG_ARCH_MX3 */
149 #define TCTL_SWR (1<<15)
150 #define TCTL_CC (1<<10)
151 #define TCTL_OM (1<<9)
152 #define TCTL_CAP_RIS (1<<6)
153 #define TCTL_CAP_FAL (2<<6)
154 #define TCTL_CAP_RIS_FAL (3<<6)
155 #define TCTL_CAP_ENA (1<<5)
156 #define TCTL_TEN (1<<0)