From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-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! --- arch/arm/mach-lh7a40x/irq-kev7a400.c | 92 ++++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) create mode 100644 arch/arm/mach-lh7a40x/irq-kev7a400.c (limited to 'arch/arm/mach-lh7a40x/irq-kev7a400.c') diff --git a/arch/arm/mach-lh7a40x/irq-kev7a400.c b/arch/arm/mach-lh7a40x/irq-kev7a400.c new file mode 100644 index 000000000000..691bb09232a5 --- /dev/null +++ b/arch/arm/mach-lh7a40x/irq-kev7a400.c @@ -0,0 +1,92 @@ +/* arch/arm/mach-lh7a40x/irq-kev7a400.c + * + * Copyright (C) 2004 Coastal Environmental Systems + * + * 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 +#include + +#include +#include +#include +#include + + + /* KEV7a400 CPLD IRQ handling */ + +static u16 CPLD_IRQ_mask; /* Mask for CPLD IRQs, 1 == unmasked */ + +static void +lh7a400_ack_cpld_irq (u32 irq) +{ + CPLD_CL_INT = 1 << (irq - IRQ_KEV7A400_CPLD); +} + +static void +lh7a400_mask_cpld_irq (u32 irq) +{ + CPLD_IRQ_mask &= ~(1 << (irq - IRQ_KEV7A400_CPLD)); + CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask; +} + +static void +lh7a400_unmask_cpld_irq (u32 irq) +{ + CPLD_IRQ_mask |= 1 << (irq - IRQ_KEV7A400_CPLD); + CPLD_WR_PB_INT_MASK = CPLD_IRQ_mask; +} + +static struct +irqchip lh7a400_cpld_chip = { + .ack = lh7a400_ack_cpld_irq, + .mask = lh7a400_mask_cpld_irq, + .unmask = lh7a400_unmask_cpld_irq, +}; + +static void +lh7a400_cpld_handler (unsigned int irq, struct irqdesc *desc, + struct pt_regs *regs) +{ + u32 mask = CPLD_LATCHED_INTS; + irq = IRQ_KEV_7A400_CPLD; + for (; mask; mask >>= 1, ++irq) { + if (mask & 1) + desc[irq].handle (irq, desc, regs); + } +} + + /* IRQ initialization */ + +void __init +lh7a400_init_board_irq (void) +{ + int irq; + + for (irq = IRQ_KEV7A400_CPLD; + irq < IRQ_KEV7A400_CPLD + NR_IRQ_KEV7A400_CPLD; ++irq) { + set_irq_chip (irq, &lh7a400_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; */ + + /* *** FIXME CF enabled in ide-probe.c */ + + GPIO_GPIOINTEN = 0; /* Disable all GPIO interrupts */ + barrier(); + 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(); +} -- cgit v1.2.1