74ec71e161
Patch from Todd Poynor Add platform devices for flash to Lubbock and Mainstone board files. Once in place, the two existing mtd map drivers for the boards will be converted to use a single pxa2xx map driver in the linux-mtd tree. Take 4: flash_platform_data .map_name vs. .name cleaned up, resync with merged irda patch context. Signed-off-by: Todd Poynor <tpoynor@mvista.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
448 lines
10 KiB
C
448 lines
10 KiB
C
/*
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* linux/arch/arm/mach-pxa/lubbock.c
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*
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* Support for the Intel DBPXA250 Development Platform.
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*
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* Author: Nicolas Pitre
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* Created: Jun 15, 2001
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* Copyright: MontaVista Software Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/sysdev.h>
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#include <linux/major.h>
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#include <linux/fb.h>
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#include <linux/interrupt.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <asm/setup.h>
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#include <asm/memory.h>
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#include <asm/mach-types.h>
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#include <asm/hardware.h>
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#include <asm/irq.h>
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#include <asm/sizes.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/flash.h>
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#include <asm/hardware/sa1111.h>
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#include <asm/arch/pxa-regs.h>
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#include <asm/arch/lubbock.h>
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#include <asm/arch/udc.h>
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#include <asm/arch/irda.h>
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#include <asm/arch/pxafb.h>
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#include <asm/arch/mmc.h>
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#include "generic.h"
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#define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
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void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
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{
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unsigned long flags;
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local_irq_save(flags);
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LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
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local_irq_restore(flags);
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}
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EXPORT_SYMBOL(lubbock_set_misc_wr);
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static unsigned long lubbock_irq_enabled;
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static void lubbock_mask_irq(unsigned int irq)
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{
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int lubbock_irq = (irq - LUBBOCK_IRQ(0));
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LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
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}
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static void lubbock_unmask_irq(unsigned int irq)
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{
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int lubbock_irq = (irq - LUBBOCK_IRQ(0));
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/* the irq can be acknowledged only if deasserted, so it's done here */
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LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
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LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
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}
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static struct irqchip lubbock_irq_chip = {
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.ack = lubbock_mask_irq,
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.mask = lubbock_mask_irq,
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.unmask = lubbock_unmask_irq,
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};
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static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc,
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struct pt_regs *regs)
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{
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unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
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do {
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GEDR(0) = GPIO_bit(0); /* clear our parent irq */
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if (likely(pending)) {
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irq = LUBBOCK_IRQ(0) + __ffs(pending);
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desc = irq_desc + irq;
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desc_handle_irq(irq, desc, regs);
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}
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pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
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} while (pending);
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}
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static void __init lubbock_init_irq(void)
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{
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int irq;
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pxa_init_irq();
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/* setup extra lubbock irqs */
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for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
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set_irq_chip(irq, &lubbock_irq_chip);
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set_irq_handler(irq, do_level_IRQ);
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set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
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}
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set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
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set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
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}
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#ifdef CONFIG_PM
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static int lubbock_irq_resume(struct sys_device *dev)
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{
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LUB_IRQ_MASK_EN = lubbock_irq_enabled;
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return 0;
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}
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static struct sysdev_class lubbock_irq_sysclass = {
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set_kset_name("cpld_irq"),
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.resume = lubbock_irq_resume,
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};
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static struct sys_device lubbock_irq_device = {
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.cls = &lubbock_irq_sysclass,
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};
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static int __init lubbock_irq_device_init(void)
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{
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int ret = sysdev_class_register(&lubbock_irq_sysclass);
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if (ret == 0)
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ret = sysdev_register(&lubbock_irq_device);
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return ret;
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}
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device_initcall(lubbock_irq_device_init);
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#endif
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static int lubbock_udc_is_connected(void)
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{
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return (LUB_MISC_RD & (1 << 9)) == 0;
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}
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static struct pxa2xx_udc_mach_info udc_info __initdata = {
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.udc_is_connected = lubbock_udc_is_connected,
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// no D+ pullup; lubbock can't connect/disconnect in software
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};
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static struct platform_device lub_audio_device = {
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.name = "pxa2xx-ac97",
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.id = -1,
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};
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static struct resource sa1111_resources[] = {
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[0] = {
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.start = 0x10000000,
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.end = 0x10001fff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = LUBBOCK_SA1111_IRQ,
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.end = LUBBOCK_SA1111_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device sa1111_device = {
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.name = "sa1111",
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.id = -1,
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.num_resources = ARRAY_SIZE(sa1111_resources),
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.resource = sa1111_resources,
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};
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static struct resource smc91x_resources[] = {
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[0] = {
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.name = "smc91x-regs",
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.start = 0x0c000c00,
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.end = 0x0c0fffff,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = LUBBOCK_ETH_IRQ,
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.end = LUBBOCK_ETH_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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[2] = {
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.name = "smc91x-attrib",
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.start = 0x0e000000,
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.end = 0x0e0fffff,
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.flags = IORESOURCE_MEM,
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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 = -1,
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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 flash_resources[] = {
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[0] = {
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.start = 0x00000000,
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.end = SZ_64M - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 0x04000000,
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.end = 0x04000000 + SZ_64M - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct mtd_partition lubbock_partitions[] = {
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{
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.name = "Bootloader",
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.size = 0x00040000,
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.offset = 0,
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.mask_flags = MTD_WRITEABLE /* force read-only */
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},{
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.name = "Kernel",
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.size = 0x00100000,
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.offset = 0x00040000,
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},{
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.name = "Filesystem",
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.size = MTDPART_SIZ_FULL,
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.offset = 0x00140000
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}
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};
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static struct flash_platform_data lubbock_flash_data[2] = {
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{
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.map_name = "cfi_probe",
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.parts = lubbock_partitions,
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.nr_parts = ARRAY_SIZE(lubbock_partitions),
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}, {
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.map_name = "cfi_probe",
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.parts = NULL,
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.nr_parts = 0,
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}
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};
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static struct platform_device lubbock_flash_device[2] = {
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{
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.name = "pxa2xx-flash",
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.id = 0,
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.dev = {
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.platform_data = &lubbock_flash_data[0],
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},
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.resource = &flash_resources[0],
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.num_resources = 1,
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},
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{
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.name = "pxa2xx-flash",
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.id = 1,
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.dev = {
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.platform_data = &lubbock_flash_data[1],
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},
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.resource = &flash_resources[1],
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.num_resources = 1,
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},
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};
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static struct platform_device *devices[] __initdata = {
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&sa1111_device,
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&lub_audio_device,
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&smc91x_device,
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&lubbock_flash_device[0],
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&lubbock_flash_device[1],
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};
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static struct pxafb_mach_info sharp_lm8v31 __initdata = {
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.pixclock = 270000,
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.xres = 640,
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.yres = 480,
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.bpp = 16,
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.hsync_len = 1,
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.left_margin = 3,
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.right_margin = 3,
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.vsync_len = 1,
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.upper_margin = 0,
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.lower_margin = 0,
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.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
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.cmap_greyscale = 0,
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.cmap_inverse = 0,
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.cmap_static = 0,
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.lccr0 = LCCR0_SDS,
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.lccr3 = LCCR3_PCP | LCCR3_Acb(255),
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};
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#define MMC_POLL_RATE msecs_to_jiffies(1000)
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static void lubbock_mmc_poll(unsigned long);
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static irqreturn_t (*mmc_detect_int)(int, void *, struct pt_regs *);
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static struct timer_list mmc_timer = {
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.function = lubbock_mmc_poll,
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};
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static void lubbock_mmc_poll(unsigned long data)
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{
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unsigned long flags;
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/* clear any previous irq state, then ... */
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local_irq_save(flags);
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LUB_IRQ_SET_CLR &= ~(1 << 0);
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local_irq_restore(flags);
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/* poll until mmc/sd card is removed */
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if (LUB_IRQ_SET_CLR & (1 << 0))
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mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
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else {
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(void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data, NULL);
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enable_irq(LUBBOCK_SD_IRQ);
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}
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}
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static irqreturn_t lubbock_detect_int(int irq, void *data, struct pt_regs *regs)
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{
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/* IRQ is level triggered; disable, and poll for removal */
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disable_irq(irq);
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mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
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return mmc_detect_int(irq, data, regs);
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}
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static int lubbock_mci_init(struct device *dev,
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irqreturn_t (*detect_int)(int, void *, struct pt_regs *),
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void *data)
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{
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/* setup GPIO for PXA25x MMC controller */
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pxa_gpio_mode(GPIO6_MMCCLK_MD);
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pxa_gpio_mode(GPIO8_MMCCS0_MD);
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/* detect card insert/eject */
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mmc_detect_int = detect_int;
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init_timer(&mmc_timer);
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mmc_timer.data = (unsigned long) data;
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return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
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SA_SAMPLE_RANDOM, "lubbock-sd-detect", data);
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}
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static int lubbock_mci_get_ro(struct device *dev)
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{
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return (LUB_MISC_RD & (1 << 2)) != 0;
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}
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static void lubbock_mci_exit(struct device *dev, void *data)
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{
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free_irq(LUBBOCK_SD_IRQ, data);
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del_timer_sync(&mmc_timer);
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}
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static struct pxamci_platform_data lubbock_mci_platform_data = {
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.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
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.detect_delay = 1,
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.init = lubbock_mci_init,
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.get_ro = lubbock_mci_get_ro,
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.exit = lubbock_mci_exit,
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};
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static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
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{
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unsigned long flags;
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local_irq_save(flags);
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if (mode & IR_SIRMODE) {
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LUB_MISC_WR &= ~(1 << 4);
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} else if (mode & IR_FIRMODE) {
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LUB_MISC_WR |= 1 << 4;
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}
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local_irq_restore(flags);
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}
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static struct pxaficp_platform_data lubbock_ficp_platform_data = {
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.transceiver_cap = IR_SIRMODE | IR_FIRMODE,
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.transceiver_mode = lubbock_irda_transceiver_mode,
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};
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static void __init lubbock_init(void)
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{
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int flashboot = (LUB_CONF_SWITCHES & 1);
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pxa_set_udc_info(&udc_info);
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set_pxa_fb_info(&sharp_lm8v31);
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pxa_set_mci_info(&lubbock_mci_platform_data);
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pxa_set_ficp_info(&lubbock_ficp_platform_data);
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lubbock_flash_data[0].width = lubbock_flash_data[1].width =
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(BOOT_DEF & 1) ? 2 : 4;
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/* Compensate for the nROMBT switch which swaps the flash banks */
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printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
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flashboot?"Flash":"ROM", flashboot);
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lubbock_flash_data[flashboot^1].name = "application-flash";
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lubbock_flash_data[flashboot].name = "boot-rom";
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(void) platform_add_devices(devices, ARRAY_SIZE(devices));
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}
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static struct map_desc lubbock_io_desc[] __initdata = {
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{ /* CPLD */
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.virtual = LUBBOCK_FPGA_VIRT,
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.pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
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.length = 0x00100000,
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.type = MT_DEVICE
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}
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};
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static void __init lubbock_map_io(void)
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{
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pxa_map_io();
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iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
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/* This enables the BTUART */
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pxa_gpio_mode(GPIO42_BTRXD_MD);
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pxa_gpio_mode(GPIO43_BTTXD_MD);
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pxa_gpio_mode(GPIO44_BTCTS_MD);
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pxa_gpio_mode(GPIO45_BTRTS_MD);
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/* This is for the SMC chip select */
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pxa_gpio_mode(GPIO79_nCS_3_MD);
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/* setup sleep mode values */
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PWER = 0x00000002;
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PFER = 0x00000000;
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PRER = 0x00000002;
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PGSR0 = 0x00008000;
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PGSR1 = 0x003F0202;
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PGSR2 = 0x0001C000;
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PCFR |= PCFR_OPDE;
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}
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MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
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/* Maintainer: MontaVista Software Inc. */
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.phys_ram = 0xa0000000,
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.phys_io = 0x40000000,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.map_io = lubbock_map_io,
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.init_irq = lubbock_init_irq,
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.timer = &pxa_timer,
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.init_machine = lubbock_init,
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MACHINE_END
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