38c677cb9a
Patch from David Brownell
ARM genirq cleanups/updates:
- Start switching platforms to newer APIs
* use "irq_chip" name, not "irqchip"
* providing irq_chip.name
- Show irq_chip.name in /proc/interrupts, like on x86.
This update a bit more than half of the ARM code. The irq_chip.name
values were chosen to match docs (if I have them) or be otherwise
obvious ("FPGA", "CPLD", or matching the code).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
427 lines
10 KiB
C
427 lines
10 KiB
C
/* arch/arm/mach-lh7a40x/arch-lpd7a40x.c
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*
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* Copyright (C) 2004 Logic Product Development
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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*/
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#include <linux/tty.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <asm/hardware.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <asm/irq.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/map.h>
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#include "common.h"
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#define CPLD_INT_NETHERNET (1<<0)
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#define CPLD_INTMASK_ETHERNET (1<<2)
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#if defined (CONFIG_MACH_LPD7A400)
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# define CPLD_INT_NTOUCH (1<<1)
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# define CPLD_INTMASK_TOUCH (1<<3)
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# define CPLD_INT_PEN (1<<4)
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# define CPLD_INTMASK_PEN (1<<4)
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# define CPLD_INT_PIRQ (1<<4)
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#endif
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#define CPLD_INTMASK_CPLD (1<<7)
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#define CPLD_INT_CPLD (1<<6)
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#define CPLD_CONTROL_SWINT (1<<7) /* Disable all CPLD IRQs */
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#define CPLD_CONTROL_OCMSK (1<<6) /* Mask USB1 connect IRQ */
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#define CPLD_CONTROL_PDRV (1<<5) /* PCC_nDRV high */
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#define CPLD_CONTROL_USB1C (1<<4) /* USB1 connect IRQ active */
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#define CPLD_CONTROL_USB1P (1<<3) /* USB1 power disable */
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#define CPLD_CONTROL_AWKP (1<<2) /* Auto-wakeup disabled */
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#define CPLD_CONTROL_LCD_ENABLE (1<<1) /* LCD Vee enable */
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#define CPLD_CONTROL_WRLAN_NENABLE (1<<0) /* SMC91x power disable */
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static struct resource smc91x_resources[] = {
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[0] = {
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.start = CPLD00_PHYS,
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.end = CPLD00_PHYS + CPLD00_SIZE - 1, /* Only needs 16B */
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_LPD7A40X_ETH_INT,
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.end = IRQ_LPD7A40X_ETH_INT,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device smc91x_device = {
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.name = "smc91x",
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.id = 0,
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.num_resources = ARRAY_SIZE(smc91x_resources),
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.resource = smc91x_resources,
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};
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static struct resource lh7a40x_usbclient_resources[] = {
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[0] = {
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.start = USB_PHYS,
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.end = (USB_PHYS + PAGE_SIZE),
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_USB,
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.end = IRQ_USB,
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.flags = IORESOURCE_IRQ,
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},
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};
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static u64 lh7a40x_usbclient_dma_mask = 0xffffffffUL;
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static struct platform_device lh7a40x_usbclient_device = {
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// .name = "lh7a40x_udc",
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.name = "lh7-udc",
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.id = 0,
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.dev = {
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.dma_mask = &lh7a40x_usbclient_dma_mask,
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.coherent_dma_mask = 0xffffffffUL,
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},
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.num_resources = ARRAY_SIZE (lh7a40x_usbclient_resources),
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.resource = lh7a40x_usbclient_resources,
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};
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#if defined (CONFIG_ARCH_LH7A404)
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static struct resource lh7a404_usbhost_resources [] = {
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[0] = {
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.start = USBH_PHYS,
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.end = (USBH_PHYS + 0xFF),
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_USHINTR,
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.end = IRQ_USHINTR,
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.flags = IORESOURCE_IRQ,
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},
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};
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static u64 lh7a404_usbhost_dma_mask = 0xffffffffUL;
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static struct platform_device lh7a404_usbhost_device = {
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.name = "lh7a404-ohci",
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.id = 0,
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.dev = {
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.dma_mask = &lh7a404_usbhost_dma_mask,
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.coherent_dma_mask = 0xffffffffUL,
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},
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.num_resources = ARRAY_SIZE (lh7a404_usbhost_resources),
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.resource = lh7a404_usbhost_resources,
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};
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#endif
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static struct platform_device* lpd7a40x_devs[] __initdata = {
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&smc91x_device,
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&lh7a40x_usbclient_device,
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#if defined (CONFIG_ARCH_LH7A404)
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&lh7a404_usbhost_device,
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#endif
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};
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extern void lpd7a400_map_io (void);
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static void __init lpd7a40x_init (void)
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{
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#if defined (CONFIG_MACH_LPD7A400)
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CPLD_CONTROL |= 0
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| CPLD_CONTROL_SWINT /* Disable software interrupt */
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| CPLD_CONTROL_OCMSK; /* Mask USB1 connection IRQ */
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CPLD_CONTROL &= ~(0
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| CPLD_CONTROL_LCD_ENABLE /* Disable LCD */
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| CPLD_CONTROL_WRLAN_NENABLE /* Enable SMC91x */
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);
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#endif
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#if defined (CONFIG_MACH_LPD7A404)
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CPLD_CONTROL &= ~(0
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| CPLD_CONTROL_WRLAN_NENABLE /* Enable SMC91x */
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);
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#endif
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platform_add_devices (lpd7a40x_devs, ARRAY_SIZE (lpd7a40x_devs));
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#if defined (CONFIG_FB_ARMCLCD)
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lh7a40x_clcd_init ();
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#endif
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}
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static void lh7a40x_ack_cpld_irq (u32 irq)
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{
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/* CPLD doesn't have ack capability, but some devices may */
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#if defined (CPLD_INTMASK_TOUCH)
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/* The touch control *must* mask the the interrupt because the
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* interrupt bit is read by the driver to determine if the pen
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* is still down. */
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if (irq == IRQ_TOUCH)
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CPLD_INTERRUPTS |= CPLD_INTMASK_TOUCH;
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#endif
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}
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static void lh7a40x_mask_cpld_irq (u32 irq)
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{
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switch (irq) {
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case IRQ_LPD7A40X_ETH_INT:
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CPLD_INTERRUPTS |= CPLD_INTMASK_ETHERNET;
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break;
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#if defined (IRQ_TOUCH)
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case IRQ_TOUCH:
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CPLD_INTERRUPTS |= CPLD_INTMASK_TOUCH;
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break;
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#endif
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}
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}
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static void lh7a40x_unmask_cpld_irq (u32 irq)
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{
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switch (irq) {
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case IRQ_LPD7A40X_ETH_INT:
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CPLD_INTERRUPTS &= ~CPLD_INTMASK_ETHERNET;
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break;
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#if defined (IRQ_TOUCH)
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case IRQ_TOUCH:
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CPLD_INTERRUPTS &= ~CPLD_INTMASK_TOUCH;
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break;
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#endif
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}
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}
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static struct irq_chip lpd7a40x_cpld_chip = {
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.name = "CPLD",
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.ack = lh7a40x_ack_cpld_irq,
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.mask = lh7a40x_mask_cpld_irq,
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.unmask = lh7a40x_unmask_cpld_irq,
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};
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static void lpd7a40x_cpld_handler (unsigned int irq, struct irqdesc *desc,
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struct pt_regs *regs)
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{
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unsigned int mask = CPLD_INTERRUPTS;
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desc->chip->ack (irq);
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if ((mask & (1<<0)) == 0) /* WLAN */
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IRQ_DISPATCH (IRQ_LPD7A40X_ETH_INT);
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#if defined (IRQ_TOUCH)
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if ((mask & (1<<1)) == 0) /* Touch */
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IRQ_DISPATCH (IRQ_TOUCH);
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#endif
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desc->chip->unmask (irq); /* Level-triggered need this */
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}
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void __init lh7a40x_init_board_irq (void)
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{
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int irq;
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/* Rev A (v2.8): PF0, PF1, PF2, and PF3 are available IRQs.
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PF7 supports the CPLD.
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Rev B (v3.4): PF0, PF1, and PF2 are available IRQs.
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PF3 supports the CPLD.
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(Some) LPD7A404 prerelease boards report a version
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number of 0x16, but we force an override since the
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hardware is of the newer variety.
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*/
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unsigned char cpld_version = CPLD_REVISION;
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int pinCPLD = (cpld_version == 0x28) ? 7 : 3;
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#if defined CONFIG_MACH_LPD7A404
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cpld_version = 0x34; /* Coerce LPD7A404 to RevB */
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#endif
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/* First, configure user controlled GPIOF interrupts */
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GPIO_PFDD &= ~0x0f; /* PF0-3 are inputs */
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GPIO_INTTYPE1 &= ~0x0f; /* PF0-3 are level triggered */
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GPIO_INTTYPE2 &= ~0x0f; /* PF0-3 are active low */
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barrier ();
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GPIO_GPIOFINTEN |= 0x0f; /* Enable PF0, PF1, PF2, and PF3 IRQs */
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/* Then, configure CPLD interrupt */
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/* Disable all CPLD interrupts */
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#if defined (CONFIG_MACH_LPD7A400)
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CPLD_INTERRUPTS = CPLD_INTMASK_TOUCH | CPLD_INTMASK_PEN
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| CPLD_INTMASK_ETHERNET;
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/* *** FIXME: don't know why we need 7 and 4. 7 is way wrong
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and 4 is uncefined. */
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// (1<<7)|(1<<4)|(1<<3)|(1<<2);
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#endif
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#if defined (CONFIG_MACH_LPD7A404)
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CPLD_INTERRUPTS = CPLD_INTMASK_ETHERNET;
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/* *** FIXME: don't know why we need 6 and 5, neither is defined. */
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// (1<<6)|(1<<5)|(1<<3);
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#endif
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GPIO_PFDD &= ~(1 << pinCPLD); /* Make input */
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GPIO_INTTYPE1 &= ~(1 << pinCPLD); /* Level triggered */
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GPIO_INTTYPE2 &= ~(1 << pinCPLD); /* Active low */
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barrier ();
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GPIO_GPIOFINTEN |= (1 << pinCPLD); /* Enable */
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/* Cascade CPLD interrupts */
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for (irq = IRQ_BOARD_START;
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irq < IRQ_BOARD_START + NR_IRQ_BOARD; ++irq) {
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set_irq_chip (irq, &lpd7a40x_cpld_chip);
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set_irq_handler (irq, do_level_IRQ);
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set_irq_flags (irq, IRQF_VALID);
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}
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set_irq_chained_handler ((cpld_version == 0x28)
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? IRQ_CPLD_V28
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: IRQ_CPLD_V34,
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lpd7a40x_cpld_handler);
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}
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static struct map_desc lpd7a40x_io_desc[] __initdata = {
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{
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.virtual = IO_VIRT,
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.pfn = __phys_to_pfn(IO_PHYS),
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.length = IO_SIZE,
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.type = MT_DEVICE
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},
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{ /* Mapping added to work around chip select problems */
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.virtual = IOBARRIER_VIRT,
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.pfn = __phys_to_pfn(IOBARRIER_PHYS),
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.length = IOBARRIER_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CF_VIRT,
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.pfn = __phys_to_pfn(CF_PHYS),
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.length = CF_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD02_VIRT,
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.pfn = __phys_to_pfn(CPLD02_PHYS),
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.length = CPLD02_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD06_VIRT,
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.pfn = __phys_to_pfn(CPLD06_PHYS),
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.length = CPLD06_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD08_VIRT,
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.pfn = __phys_to_pfn(CPLD08_PHYS),
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.length = CPLD08_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD08_VIRT,
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.pfn = __phys_to_pfn(CPLD08_PHYS),
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.length = CPLD08_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD0A_VIRT,
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.pfn = __phys_to_pfn(CPLD0A_PHYS),
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.length = CPLD0A_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD0C_VIRT,
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.pfn = __phys_to_pfn(CPLD0C_PHYS),
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.length = CPLD0C_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD0E_VIRT,
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.pfn = __phys_to_pfn(CPLD0E_PHYS),
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.length = CPLD0E_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD10_VIRT,
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.pfn = __phys_to_pfn(CPLD10_PHYS),
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.length = CPLD10_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD12_VIRT,
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.pfn = __phys_to_pfn(CPLD12_PHYS),
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.length = CPLD12_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD14_VIRT,
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.pfn = __phys_to_pfn(CPLD14_PHYS),
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.length = CPLD14_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD16_VIRT,
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.pfn = __phys_to_pfn(CPLD16_PHYS),
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.length = CPLD16_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD18_VIRT,
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.pfn = __phys_to_pfn(CPLD18_PHYS),
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.length = CPLD18_SIZE,
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.type = MT_DEVICE
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},
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{
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.virtual = CPLD1A_VIRT,
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.pfn = __phys_to_pfn(CPLD1A_PHYS),
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.length = CPLD1A_SIZE,
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.type = MT_DEVICE
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},
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};
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void __init
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lpd7a40x_map_io(void)
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{
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iotable_init (lpd7a40x_io_desc, ARRAY_SIZE (lpd7a40x_io_desc));
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}
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#ifdef CONFIG_MACH_LPD7A400
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MACHINE_START (LPD7A400, "Logic Product Development LPD7A400-10")
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/* Maintainer: Marc Singer */
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.phys_io = 0x80000000,
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.io_pg_offst = ((io_p2v (0x80000000))>>18) & 0xfffc,
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.boot_params = 0xc0000100,
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.map_io = lpd7a40x_map_io,
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.init_irq = lh7a400_init_irq,
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.timer = &lh7a40x_timer,
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.init_machine = lpd7a40x_init,
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MACHINE_END
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#endif
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#ifdef CONFIG_MACH_LPD7A404
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MACHINE_START (LPD7A404, "Logic Product Development LPD7A404-10")
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/* Maintainer: Marc Singer */
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.phys_io = 0x80000000,
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.io_pg_offst = ((io_p2v (0x80000000))>>18) & 0xfffc,
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.boot_params = 0xc0000100,
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.map_io = lpd7a40x_map_io,
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.init_irq = lh7a404_init_irq,
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.timer = &lh7a40x_timer,
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.init_machine = lpd7a40x_init,
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MACHINE_END
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#endif
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