diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-lh7a40x/arch-kev7a400.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/arm/mach-lh7a40x/arch-kev7a400.c')
-rw-r--r-- | arch/arm/mach-lh7a40x/arch-kev7a400.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/arch/arm/mach-lh7a40x/arch-kev7a400.c b/arch/arm/mach-lh7a40x/arch-kev7a400.c new file mode 100644 index 00000000000..be5d17fe9dc --- /dev/null +++ b/arch/arm/mach-lh7a40x/arch-kev7a400.c @@ -0,0 +1,111 @@ +/* arch/arm/mach-lh7a40x/arch-kev7a400.c + * + * Copyright (C) 2004 Logic Product Development + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + */ + +#include <linux/tty.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/interrupt.h> + +#include <asm/hardware.h> +#include <asm/setup.h> +#include <asm/mach-types.h> +#include <asm/mach/arch.h> +#include <asm/irq.h> +#include <asm/mach/irq.h> +#include <asm/mach/map.h> + +#include "common.h" + + /* This function calls the board specific IRQ initialization function. */ + +static struct map_desc kev7a400_io_desc[] __initdata = { + { IO_VIRT, IO_PHYS, IO_SIZE, MT_DEVICE }, + { CPLD_VIRT, CPLD_PHYS, CPLD_SIZE, MT_DEVICE }, +}; + +void __init kev7a400_map_io(void) +{ + iotable_init (kev7a400_io_desc, ARRAY_SIZE (kev7a400_io_desc)); +} + +static u16 CPLD_IRQ_mask; /* Mask for CPLD IRQs, 1 == unmasked */ + +static void kev7a400_ack_cpld_irq (u32 irq) +{ + CPLD_CL_INT = 1 << (irq - IRQ_KEV7A400_CPLD); +} + +static void kev7a400_mask_cpld_irq (u32 irq) +{ + CPLD_IRQ_mask &= ~(1 << (irq - IRQ_KEV7A400_CPLD)); + CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask; +} + +static void kev7a400_unmask_cpld_irq (u32 irq) +{ + CPLD_IRQ_mask |= 1 << (irq - IRQ_KEV7A400_CPLD); + CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask; +} + +static struct irqchip kev7a400_cpld_chip = { + .ack = kev7a400_ack_cpld_irq, + .mask = kev7a400_mask_cpld_irq, + .unmask = kev7a400_unmask_cpld_irq, +}; + + +static void kev7a400_cpld_handler (unsigned int irq, struct irqdesc *desc, + struct pt_regs *regs) +{ + u32 mask = CPLD_LATCHED_INTS; + irq = IRQ_KEV7A400_CPLD; + for (; mask; mask >>= 1, ++irq) { + if (mask & 1) + desc[irq].handle (irq, desc, regs); + } +} + +void __init lh7a40x_init_board_irq (void) +{ + int irq; + + for (irq = IRQ_KEV7A400_CPLD; + irq < IRQ_KEV7A400_CPLD + NR_IRQ_BOARD; ++irq) { + set_irq_chip (irq, &kev7a400_cpld_chip); + set_irq_handler (irq, do_edge_IRQ); + set_irq_flags (irq, IRQF_VALID); + } + set_irq_chained_handler (IRQ_CPLD, kev7a400_cpld_handler); + + /* Clear all CPLD interrupts */ + CPLD_CL_INT = 0xff; /* CPLD_INTR_MMC_CD | CPLD_INTR_ETH_INT; */ + + GPIO_GPIOINTEN = 0; /* Disable all GPIO interrupts */ + barrier(); + +#if 0 + GPIO_INTTYPE1 + = (GPIO_INTR_PCC1_CD | GPIO_INTR_PCC1_CD); /* Edge trig. */ + GPIO_INTTYPE2 = 0; /* Falling edge & low-level */ + GPIO_GPIOFEOI = 0xff; /* Clear all GPIO interrupts */ + GPIO_GPIOINTEN = 0xff; /* Enable all GPIO interrupts */ + + init_FIQ(); +#endif +} + +MACHINE_START (KEV7A400, "Sharp KEV7a400") + MAINTAINER ("Marc Singer") + BOOT_MEM (0xc0000000, 0x80000000, io_p2v (0x80000000)) + BOOT_PARAMS (0xc0000100) + MAPIO (kev7a400_map_io) + INITIRQ (lh7a400_init_irq) + .timer = &lh7a40x_timer, +MACHINE_END |