projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* arch/arm/mach-lh7a40x/arch-kev7a400.c |
| 2 | * | |
| 3 | * Copyright (C) 2004 Logic Product Development | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or | |
| 6 | * modify it under the terms of the GNU General Public License | |
| 7 | * version 2 as published by the Free Software Foundation. | |
| 8 | * | |
| 9 | */ | |
| 10 | ||
| 11 | #include <linux/tty.h> | |
| 12 | #include <linux/init.h> | |
| 13 | #include <linux/device.h> | |
| 14 | #include <linux/interrupt.h> | |
| 15 | ||
| 16 | #include <asm/hardware.h> | |
| 17 | #include <asm/setup.h> | |
| 18 | #include <asm/mach-types.h> | |
| 19 | #include <asm/mach/arch.h> | |
| 20 | #include <asm/irq.h> | |
| 21 | #include <asm/mach/irq.h> | |
| 22 | #include <asm/mach/map.h> | |
| 23 | ||
| 24 | #include "common.h" | |
| 25 | ||
| 26 | /* This function calls the board specific IRQ initialization function. */ | |
| 27 | ||
| 28 | static struct map_desc kev7a400_io_desc[] __initdata = { | |
| 36d28c03 DS |
29 | { |
| 30 | .virtual = IO_VIRT, | |
| 31 | .pfn = __phys_to_pfn(IO_PHYS), | |
| 32 | .length = IO_SIZE, | |
| 33 | .type = MT_DEVICE | |
| 34 | }, { | |
| 35 | .virtual = CPLD_VIRT, | |
| 36 | .pfn = __phys_to_pfn(CPLD_PHYS), | |
| 37 | .length = CPLD_SIZE, | |
| 38 | .type = MT_DEVICE | |
| 39 | } | |
| 1da177e4 LT |
40 | }; |
| 41 | ||
| 42 | void __init kev7a400_map_io(void) | |
| 43 | { | |
| 44 | iotable_init (kev7a400_io_desc, ARRAY_SIZE (kev7a400_io_desc)); | |
| 45 | } | |
| 46 | ||
| 47 | static u16 CPLD_IRQ_mask; /* Mask for CPLD IRQs, 1 == unmasked */ | |
| 48 | ||
| 49 | static void kev7a400_ack_cpld_irq (u32 irq) | |
| 50 | { | |
| 51 | CPLD_CL_INT = 1 << (irq - IRQ_KEV7A400_CPLD); | |
| 52 | } | |
| 53 | ||
| 54 | static void kev7a400_mask_cpld_irq (u32 irq) | |
| 55 | { | |
| 56 | CPLD_IRQ_mask &= ~(1 << (irq - IRQ_KEV7A400_CPLD)); | |
| 57 | CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask; | |
| 58 | } | |
| 59 | ||
| 60 | static void kev7a400_unmask_cpld_irq (u32 irq) | |
| 61 | { | |
| 62 | CPLD_IRQ_mask |= 1 << (irq - IRQ_KEV7A400_CPLD); | |
| 63 | CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask; | |
| 64 | } | |
| 65 | ||
| 38c677cb DB |
66 | static struct irq_chip kev7a400_cpld_chip = { |
| 67 | .name = "CPLD", | |
| 1da177e4 LT |
68 | .ack = kev7a400_ack_cpld_irq, |
| 69 | .mask = kev7a400_mask_cpld_irq, | |
| 70 | .unmask = kev7a400_unmask_cpld_irq, | |
| 71 | }; | |
| 72 | ||
| 73 | ||
| 10dd5ce2 | 74 | static void kev7a400_cpld_handler (unsigned int irq, struct irq_desc *desc) |
| 1da177e4 LT |
75 | { |
| 76 | u32 mask = CPLD_LATCHED_INTS; | |
| 77 | irq = IRQ_KEV7A400_CPLD; | |
| 78 | for (; mask; mask >>= 1, ++irq) { | |
| 79 | if (mask & 1) | |
| 0cd61b68 | 80 | desc[irq].handle (irq, desc); |
| 1da177e4 LT |
81 | } |
| 82 | } | |
| 83 | ||
| 84 | void __init lh7a40x_init_board_irq (void) | |
| 85 | { | |
| 86 | int irq; | |
| 87 | ||
| 88 | for (irq = IRQ_KEV7A400_CPLD; | |
| 89 | irq < IRQ_KEV7A400_CPLD + NR_IRQ_BOARD; ++irq) { | |
| 90 | set_irq_chip (irq, &kev7a400_cpld_chip); | |
| 10dd5ce2 | 91 | set_irq_handler (irq, handle_edge_irq); |
| 1da177e4 LT |
92 | set_irq_flags (irq, IRQF_VALID); |
| 93 | } | |
| 94 | set_irq_chained_handler (IRQ_CPLD, kev7a400_cpld_handler); | |
| 95 | ||
| 96 | /* Clear all CPLD interrupts */ | |
| 97 | CPLD_CL_INT = 0xff; /* CPLD_INTR_MMC_CD | CPLD_INTR_ETH_INT; */ | |
| 98 | ||
| 99 | GPIO_GPIOINTEN = 0; /* Disable all GPIO interrupts */ | |
| 100 | barrier(); | |
| 101 | ||
| 102 | #if 0 | |
| 103 | GPIO_INTTYPE1 | |
| 104 | = (GPIO_INTR_PCC1_CD | GPIO_INTR_PCC1_CD); /* Edge trig. */ | |
| 105 | GPIO_INTTYPE2 = 0; /* Falling edge & low-level */ | |
| 106 | GPIO_GPIOFEOI = 0xff; /* Clear all GPIO interrupts */ | |
| 107 | GPIO_GPIOINTEN = 0xff; /* Enable all GPIO interrupts */ | |
| 108 | ||
| 109 | init_FIQ(); | |
| 110 | #endif | |
| 111 | } | |
| 112 | ||
| 113 | MACHINE_START (KEV7A400, "Sharp KEV7a400") | |
| e9dea0c6 | 114 | /* Maintainer: Marc Singer */ |
| e9dea0c6 RK |
115 | .phys_io = 0x80000000, |
| 116 | .io_pg_offst = ((io_p2v (0x80000000))>>18) & 0xfffc, | |
| 117 | .boot_params = 0xc0000100, | |
| 118 | .map_io = kev7a400_map_io, | |
| 119 | .init_irq = lh7a400_init_irq, | |
| 1da177e4 LT |
120 | .timer = &lh7a40x_timer, |
| 121 | MACHINE_END |