537 lines
12 KiB
C
537 lines
12 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 <linux/spi/spi.h>
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#include <linux/spi/ads7846.h>
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#include <asm/arch/pxa2xx_spi.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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#include "devices.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 irq_chip lubbock_irq_chip = {
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.name = "FPGA",
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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 irq_desc *desc)
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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);
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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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pxa25x_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, handle_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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/* ADS7846 is connected through SSP ... and if your board has J5 populated,
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* you can select it to replace the ucb1400 by switching the touchscreen cable
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* (to J5) and poking board registers (as done below). Else it's only useful
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* for the temperature sensors.
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*/
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static struct resource pxa_ssp_resources[] = {
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[0] = {
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.start = __PREG(SSCR0_P(1)),
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.end = __PREG(SSCR0_P(1)) + 0x14,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_SSP,
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.end = IRQ_SSP,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct pxa2xx_spi_master pxa_ssp_master_info = {
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.ssp_type = PXA25x_SSP,
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.clock_enable = CKEN_SSP,
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.num_chipselect = 0,
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};
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static struct platform_device pxa_ssp = {
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.name = "pxa2xx-spi",
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.id = 1,
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.resource = pxa_ssp_resources,
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.num_resources = ARRAY_SIZE(pxa_ssp_resources),
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.dev = {
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.platform_data = &pxa_ssp_master_info,
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},
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};
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static int lubbock_ads7846_pendown_state(void)
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{
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/* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
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return 0;
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}
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static struct ads7846_platform_data ads_info = {
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.model = 7846,
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.vref_delay_usecs = 100, /* internal, no cap */
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.get_pendown_state = lubbock_ads7846_pendown_state,
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// .x_plate_ohms = 500, /* GUESS! */
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// .y_plate_ohms = 500, /* GUESS! */
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};
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static void ads7846_cs(u32 command)
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{
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static const unsigned TS_nCS = 1 << 11;
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lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
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}
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static struct pxa2xx_spi_chip ads_hw = {
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.tx_threshold = 1,
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.rx_threshold = 2,
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.cs_control = ads7846_cs,
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};
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static struct spi_board_info spi_board_info[] __initdata = { {
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.modalias = "ads7846",
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.platform_data = &ads_info,
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.controller_data = &ads_hw,
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.irq = LUBBOCK_BB_IRQ,
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.max_speed_hz = 120000 /* max sample rate at 3V */
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* 26 /* command + data + overhead */,
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.bus_num = 1,
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.chip_select = 0,
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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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&pxa_ssp,
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};
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static struct pxafb_mode_info sharp_lm8v31_mode = {
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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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};
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static struct pxafb_mach_info sharp_lm8v31 = {
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.modes = &sharp_lm8v31_mode,
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.num_modes = 1,
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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 irq_handler_t mmc_detect_int;
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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);
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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)
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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);
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}
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static int lubbock_mci_init(struct device *dev,
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irq_handler_t detect_int,
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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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IRQF_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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spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
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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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/* SSP data pins */
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|
pxa_gpio_mode(GPIO23_SCLK_MD);
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|
pxa_gpio_mode(GPIO25_STXD_MD);
|
|
pxa_gpio_mode(GPIO26_SRXD_MD);
|
|
|
|
/* This enables the BTUART */
|
|
pxa_gpio_mode(GPIO42_BTRXD_MD);
|
|
pxa_gpio_mode(GPIO43_BTTXD_MD);
|
|
pxa_gpio_mode(GPIO44_BTCTS_MD);
|
|
pxa_gpio_mode(GPIO45_BTRTS_MD);
|
|
|
|
/* This is for the SMC chip select */
|
|
pxa_gpio_mode(GPIO79_nCS_3_MD);
|
|
|
|
/* setup sleep mode values */
|
|
PWER = 0x00000002;
|
|
PFER = 0x00000000;
|
|
PRER = 0x00000002;
|
|
PGSR0 = 0x00008000;
|
|
PGSR1 = 0x003F0202;
|
|
PGSR2 = 0x0001C000;
|
|
PCFR |= PCFR_OPDE;
|
|
}
|
|
|
|
MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
|
|
/* Maintainer: MontaVista Software Inc. */
|
|
.phys_io = 0x40000000,
|
|
.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
|
|
.map_io = lubbock_map_io,
|
|
.init_irq = lubbock_init_irq,
|
|
.timer = &pxa_timer,
|
|
.init_machine = lubbock_init,
|
|
MACHINE_END
|