355 lines
8.4 KiB
C
355 lines
8.4 KiB
C
/*
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* linux/arch/arm/mach-pxa/mainstone.c
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*
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* Support for the Intel HCDDBBVA0 Development Platform.
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* (go figure how they came up with such name...)
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*
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* Author: Nicolas Pitre
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* Created: Nov 05, 2002
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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/init.h>
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#include <linux/device.h>
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#include <linux/sysdev.h>
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#include <linux/interrupt.h>
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#include <linux/sched.h>
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#include <linux/bitops.h>
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#include <linux/fb.h>
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#include <asm/types.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/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/arch/pxa-regs.h>
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#include <asm/arch/mainstone.h>
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#include <asm/arch/audio.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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static unsigned long mainstone_irq_enabled;
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static void mainstone_mask_irq(unsigned int irq)
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{
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int mainstone_irq = (irq - MAINSTONE_IRQ(0));
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MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
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}
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static void mainstone_unmask_irq(unsigned int irq)
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{
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int mainstone_irq = (irq - MAINSTONE_IRQ(0));
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/* the irq can be acknowledged only if deasserted, so it's done here */
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MST_INTSETCLR &= ~(1 << mainstone_irq);
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MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
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}
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static struct irqchip mainstone_irq_chip = {
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.ack = mainstone_mask_irq,
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.mask = mainstone_mask_irq,
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.unmask = mainstone_unmask_irq,
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};
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static void mainstone_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 = MST_INTSETCLR & mainstone_irq_enabled;
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do {
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GEDR(0) = GPIO_bit(0); /* clear useless edge notification */
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if (likely(pending)) {
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irq = MAINSTONE_IRQ(0) + __ffs(pending);
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desc = irq_desc + irq;
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desc->handle(irq, desc, regs);
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}
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pending = MST_INTSETCLR & mainstone_irq_enabled;
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} while (pending);
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}
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static void __init mainstone_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 Mainstone irqs */
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for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
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set_irq_chip(irq, &mainstone_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_flags(MAINSTONE_IRQ(8), 0);
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set_irq_flags(MAINSTONE_IRQ(12), 0);
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MST_INTMSKENA = 0;
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MST_INTSETCLR = 0;
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set_irq_chained_handler(IRQ_GPIO(0), mainstone_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 mainstone_irq_resume(struct sys_device *dev)
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{
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MST_INTMSKENA = mainstone_irq_enabled;
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return 0;
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}
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static struct sysdev_class mainstone_irq_sysclass = {
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set_kset_name("cpld_irq"),
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.resume = mainstone_irq_resume,
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};
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static struct sys_device mainstone_irq_device = {
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.cls = &mainstone_irq_sysclass,
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};
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static int __init mainstone_irq_device_init(void)
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{
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int ret = sysdev_class_register(&mainstone_irq_sysclass);
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if (ret == 0)
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ret = sysdev_register(&mainstone_irq_device);
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return ret;
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}
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device_initcall(mainstone_irq_device_init);
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#endif
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static struct resource smc91x_resources[] = {
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[0] = {
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.start = (MST_ETH_PHYS + 0x300),
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.end = (MST_ETH_PHYS + 0xfffff),
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = MAINSTONE_IRQ(3),
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.end = MAINSTONE_IRQ(3),
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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 int mst_audio_startup(snd_pcm_substream_t *substream, void *priv)
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{
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
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return 0;
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}
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static void mst_audio_shutdown(snd_pcm_substream_t *substream, void *priv)
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{
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
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}
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static long mst_audio_suspend_mask;
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static void mst_audio_suspend(void *priv)
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{
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mst_audio_suspend_mask = MST_MSCWR2;
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MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
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}
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static void mst_audio_resume(void *priv)
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{
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MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
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}
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static pxa2xx_audio_ops_t mst_audio_ops = {
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.startup = mst_audio_startup,
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.shutdown = mst_audio_shutdown,
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.suspend = mst_audio_suspend,
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.resume = mst_audio_resume,
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};
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static struct platform_device mst_audio_device = {
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.name = "pxa2xx-ac97",
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.id = -1,
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.dev = { .platform_data = &mst_audio_ops },
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};
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static void mainstone_backlight_power(int on)
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{
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if (on) {
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pxa_gpio_mode(GPIO16_PWM0_MD);
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pxa_set_cken(CKEN0_PWM0, 1);
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PWM_CTRL0 = 0;
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PWM_PWDUTY0 = 0x3ff;
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PWM_PERVAL0 = 0x3ff;
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} else {
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PWM_CTRL0 = 0;
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PWM_PWDUTY0 = 0x0;
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PWM_PERVAL0 = 0x3FF;
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pxa_set_cken(CKEN0_PWM0, 0);
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}
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}
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static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
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.pixclock = 50000,
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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 = 0x9f,
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.right_margin = 1,
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.vsync_len = 44,
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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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.lccr0 = LCCR0_Act,
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.lccr3 = LCCR3_PCP,
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.pxafb_backlight_power = mainstone_backlight_power,
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};
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static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
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.pixclock = 110000,
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.xres = 240,
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.yres = 320,
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.bpp = 16,
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.hsync_len = 4,
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.left_margin = 8,
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.right_margin = 20,
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.vsync_len = 3,
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.upper_margin = 1,
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.lower_margin = 10,
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.sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
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.lccr0 = LCCR0_Act,
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.lccr3 = LCCR3_PCP,
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.pxafb_backlight_power = mainstone_backlight_power,
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};
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static int mainstone_mci_init(struct device *dev, irqreturn_t (*mstone_detect_int)(int, void *, struct pt_regs *), void *data)
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{
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int err;
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/*
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* setup GPIO for PXA27x MMC controller
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*/
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pxa_gpio_mode(GPIO32_MMCCLK_MD);
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pxa_gpio_mode(GPIO112_MMCCMD_MD);
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pxa_gpio_mode(GPIO92_MMCDAT0_MD);
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pxa_gpio_mode(GPIO109_MMCDAT1_MD);
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pxa_gpio_mode(GPIO110_MMCDAT2_MD);
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pxa_gpio_mode(GPIO111_MMCDAT3_MD);
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/* make sure SD/Memory Stick multiplexer's signals
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* are routed to MMC controller
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*/
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MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
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err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, SA_INTERRUPT,
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"MMC card detect", data);
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if (err) {
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printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
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return -1;
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}
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return 0;
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}
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static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
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{
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struct pxamci_platform_data* p_d = dev->platform_data;
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if (( 1 << vdd) & p_d->ocr_mask) {
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printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
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MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
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MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
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} else {
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printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
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MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
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}
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}
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static void mainstone_mci_exit(struct device *dev, void *data)
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{
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free_irq(MAINSTONE_MMC_IRQ, data);
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}
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static struct pxamci_platform_data mainstone_mci_platform_data = {
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.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
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.init = mainstone_mci_init,
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.setpower = mainstone_mci_setpower,
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.exit = mainstone_mci_exit,
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};
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static void __init mainstone_init(void)
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{
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/*
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* On Mainstone, we route AC97_SYSCLK via GPIO45 to
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* the audio daughter card
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*/
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pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
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platform_device_register(&smc91x_device);
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platform_device_register(&mst_audio_device);
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/* reading Mainstone's "Virtual Configuration Register"
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might be handy to select LCD type here */
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if (0)
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set_pxa_fb_info(&toshiba_ltm04c380k);
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else
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set_pxa_fb_info(&toshiba_ltm035a776c);
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pxa_set_mci_info(&mainstone_mci_platform_data);
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}
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static struct map_desc mainstone_io_desc[] __initdata = {
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{ MST_FPGA_VIRT, MST_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
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};
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static void __init mainstone_map_io(void)
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{
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pxa_map_io();
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iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
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/* initialize sleep mode regs (wake-up sources, etc) */
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PGSR0 = 0x00008800;
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PGSR1 = 0x00000002;
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PGSR2 = 0x0001FC00;
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PGSR3 = 0x00001F81;
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PWER = 0xC0000002;
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PRER = 0x00000002;
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PFER = 0x00000002;
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/* for use I SRAM as framebuffer. */
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PSLR |= 0xF04;
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PCFR = 0x66;
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/* For Keypad wakeup. */
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KPC &=~KPC_ASACT;
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KPC |=KPC_AS;
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PKWR = 0x000FD000;
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/* Need read PKWR back after set it. */
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PKWR;
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}
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MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
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MAINTAINER("MontaVista Software Inc.")
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BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
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MAPIO(mainstone_map_io)
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INITIRQ(mainstone_init_irq)
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.timer = &pxa_timer,
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INIT_MACHINE(mainstone_init)
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MACHINE_END
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