projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| eb1d65aa GU |
1 | /* |
| 2 | * arch/arm/mach-at91/at91x40.c | |
| 3 | * | |
| 4 | * (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com> | |
| 5 | * Copyright (C) 2005 SAN People | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License as published by | |
| 9 | * the Free Software Foundation; either version 2 of the License, or | |
| 10 | * (at your option) any later version. | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/kernel.h> | |
| 14 | #include <linux/init.h> | |
| 15 | #include <linux/irq.h> | |
| 14070ade | 16 | #include <linux/io.h> |
| c9dfafba | 17 | #include <asm/proc-fns.h> |
| 86dfe446 | 18 | #include <asm/system_misc.h> |
| eb1d65aa | 19 | #include <asm/mach/arch.h> |
| a09e64fb | 20 | #include <mach/at91x40.h> |
| 8fe82a55 | 21 | #include <mach/at91_aic.h> |
| a09e64fb RK |
22 | #include <mach/at91_st.h> |
| 23 | #include <mach/timex.h> | |
| eb1d65aa GU |
24 | #include "generic.h" |
| 25 | ||
| 26 | /* | |
| 66aaeff1 GU |
27 | * Export the clock functions for the AT91X40. Some external code common |
| 28 | * to all AT91 family parts relys on this, like the gpio and serial support. | |
| eb1d65aa GU |
29 | */ |
| 30 | int clk_enable(struct clk *clk) | |
| 31 | { | |
| 32 | return 0; | |
| 33 | } | |
| 34 | ||
| 66aaeff1 GU |
35 | void clk_disable(struct clk *clk) |
| 36 | { | |
| 37 | } | |
| 38 | ||
| 39 | unsigned long clk_get_rate(struct clk *clk) | |
| 40 | { | |
| 41 | return AT91X40_MASTER_CLOCK; | |
| 42 | } | |
| 43 | ||
| c9dfafba NP |
44 | static void at91x40_idle(void) |
| 45 | { | |
| 46 | /* | |
| 47 | * Disable the processor clock. The processor will be automatically | |
| 48 | * re-enabled by an interrupt or by a reset. | |
| 49 | */ | |
| dca4ba41 | 50 | __raw_writel(AT91_PS_CR_CPU, AT91_IO_P2V(AT91_PS_CR)); |
| c9dfafba NP |
51 | cpu_do_idle(); |
| 52 | } | |
| 53 | ||
| eb1d65aa GU |
54 | void __init at91x40_initialize(unsigned long main_clock) |
| 55 | { | |
| c9dfafba | 56 | arm_pm_idle = at91x40_idle; |
| eb1d65aa GU |
57 | at91_extern_irq = (1 << AT91X40_ID_IRQ0) | (1 << AT91X40_ID_IRQ1) |
| 58 | | (1 << AT91X40_ID_IRQ2); | |
| 59 | } | |
| 60 | ||
| 61 | /* | |
| 62 | * The default interrupt priority levels (0 = lowest, 7 = highest). | |
| 63 | */ | |
| 64 | static unsigned int at91x40_default_irq_priority[NR_AIC_IRQS] __initdata = { | |
| 65 | 7, /* Advanced Interrupt Controller (FIQ) */ | |
| 66 | 0, /* System Peripherals */ | |
| 67 | 0, /* USART 0 */ | |
| 68 | 0, /* USART 1 */ | |
| 69 | 2, /* Timer Counter 0 */ | |
| 70 | 2, /* Timer Counter 1 */ | |
| 71 | 2, /* Timer Counter 2 */ | |
| 72 | 0, /* Watchdog timer */ | |
| 73 | 0, /* Parallel IO Controller A */ | |
| 74 | 0, /* Reserved */ | |
| 75 | 0, /* Reserved */ | |
| 76 | 0, /* Reserved */ | |
| 77 | 0, /* Reserved */ | |
| 78 | 0, /* Reserved */ | |
| 79 | 0, /* Reserved */ | |
| 80 | 0, /* Reserved */ | |
| 81 | 0, /* External IRQ0 */ | |
| 82 | 0, /* External IRQ1 */ | |
| 83 | 0, /* External IRQ2 */ | |
| 84 | }; | |
| 85 | ||
| 86 | void __init at91x40_init_interrupts(unsigned int priority[NR_AIC_IRQS]) | |
| 87 | { | |
| 88 | if (!priority) | |
| 89 | priority = at91x40_default_irq_priority; | |
| 90 | ||
| 91 | at91_aic_init(priority); | |
| 92 | } | |
| 93 |