arch/arm/mach-pxa/mainstone.c

   1 /*
   2  *  linux/arch/arm/mach-pxa/mainstone.c
   3  *
   4  *  Support for the Intel HCDDBBVA0 Development Platform.
   5  *  (go figure how they came up with such name...)
   6  *
   7  *  Author:     Nicolas Pitre
   8  *  Created:    Nov 05, 2002
   9  *  Copyright:  MontaVista Software Inc.
  10  *
  11  *  This program is free software; you can redistribute it and/or modify
  12  *  it under the terms of the GNU General Public License version 2 as
  13  *  published by the Free Software Foundation.
  14  */
  15
  16 #include <linux/init.h>
  17 #include <linux/device.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/sched.h>
  20 #include <linux/bitops.h>
  21 #include <linux/fb.h>
  22
  23 #include <asm/types.h>
  24 #include <asm/setup.h>
  25 #include <asm/memory.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/hardware.h>
  28 #include <asm/irq.h>
  29
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/map.h>
  32 #include <asm/mach/irq.h>
  33
  34 #include <asm/arch/pxa-regs.h>
  35 #include <asm/arch/mainstone.h>
  36 #include <asm/arch/audio.h>
  37 #include <asm/arch/pxafb.h>
  38 #include <asm/arch/mmc.h>
  39
  40 #include "generic.h"
  41
  42
  43 static unsigned long mainstone_irq_enabled;
  44
  45 static void mainstone_mask_irq(unsigned int irq)
  46 {
  47         int mainstone_irq = (irq - MAINSTONE_IRQ(0));
  48         MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
  49 }
  50
  51 static void mainstone_unmask_irq(unsigned int irq)
  52 {
  53         int mainstone_irq = (irq - MAINSTONE_IRQ(0));
  54         /* the irq can be acknowledged only if deasserted, so it's done here */
  55         MST_INTSETCLR &= ~(1 << mainstone_irq);
  56         MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
  57 }
  58
  59 static struct irqchip mainstone_irq_chip = {
  60         .ack            = mainstone_mask_irq,
  61         .mask           = mainstone_mask_irq,
  62         .unmask         = mainstone_unmask_irq,
  63 };
  64
  65
  66 static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
  67                                   struct pt_regs *regs)
  68 {
  69         unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
  70         do {
  71                 GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
  72                 if (likely(pending)) {
  73                         irq = MAINSTONE_IRQ(0) + __ffs(pending);
  74                         desc = irq_desc + irq;
  75                         desc->handle(irq, desc, regs);
  76                 }
  77                 pending = MST_INTSETCLR & mainstone_irq_enabled;
  78         } while (pending);
  79 }
  80
  81 static void __init mainstone_init_irq(void)
  82 {
  83         int irq;
  84
  85         pxa_init_irq();
  86
  87         /* setup extra Mainstone irqs */
  88         for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
  89                 set_irq_chip(irq, &mainstone_irq_chip);
  90                 set_irq_handler(irq, do_level_IRQ);
  91                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
  92         }
  93         set_irq_flags(MAINSTONE_IRQ(8), 0);
  94         set_irq_flags(MAINSTONE_IRQ(12), 0);
  95
  96         MST_INTMSKENA = 0;
  97         MST_INTSETCLR = 0;
  98
  99         set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
 100         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 101 }
 102
 103
 104 static struct resource smc91x_resources[] = {
 105         [0] = {
 106                 .start  = (MST_ETH_PHYS + 0x300),
 107                 .end    = (MST_ETH_PHYS + 0xfffff),
 108                 .flags  = IORESOURCE_MEM,
 109         },
 110         [1] = {
 111                 .start  = MAINSTONE_IRQ(3),
 112                 .end    = MAINSTONE_IRQ(3),
 113                 .flags  = IORESOURCE_IRQ,
 114         }
 115 };
 116
 117 static struct platform_device smc91x_device = {
 118         .name           = "smc91x",
 119         .id             = 0,
 120         .num_resources  = ARRAY_SIZE(smc91x_resources),
 121         .resource       = smc91x_resources,
 122 };
 123
 124 static int mst_audio_startup(snd_pcm_substream_t *substream, void *priv)
 125 {
 126         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 127                 MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
 128         return 0;
 129 }
 130
 131 static void mst_audio_shutdown(snd_pcm_substream_t *substream, void *priv)
 132 {
 133         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 134                 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
 135 }
 136
 137 static long mst_audio_suspend_mask;
 138
 139 static void mst_audio_suspend(void *priv)
 140 {
 141         mst_audio_suspend_mask = MST_MSCWR2;
 142         MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
 143 }
 144
 145 static void mst_audio_resume(void *priv)
 146 {
 147         MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
 148 }
 149
 150 static pxa2xx_audio_ops_t mst_audio_ops = {
 151         .startup        = mst_audio_startup,
 152         .shutdown       = mst_audio_shutdown,
 153         .suspend        = mst_audio_suspend,
 154         .resume         = mst_audio_resume,
 155 };
 156
 157 static struct platform_device mst_audio_device = {
 158         .name           = "pxa2xx-ac97",
 159         .id             = -1,
 160         .dev            = { .platform_data = &mst_audio_ops },
 161 };
 162
 163 static void mainstone_backlight_power(int on)
 164 {
 165         if (on) {
 166                 pxa_gpio_mode(GPIO16_PWM0_MD);
 167                 pxa_set_cken(CKEN0_PWM0, 1);
 168                 PWM_CTRL0 = 0;
 169                 PWM_PWDUTY0 = 0x3ff;
 170                 PWM_PERVAL0 = 0x3ff;
 171         } else {
 172                 PWM_CTRL0 = 0;
 173                 PWM_PWDUTY0 = 0x0;
 174                 PWM_PERVAL0 = 0x3FF;
 175                 pxa_set_cken(CKEN0_PWM0, 0);
 176         }
 177 }
 178
 179 static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
 180         .pixclock               = 50000,
 181         .xres                   = 640,
 182         .yres                   = 480,
 183         .bpp                    = 16,
 184         .hsync_len              = 1,
 185         .left_margin            = 0x9f,
 186         .right_margin           = 1,
 187         .vsync_len              = 44,
 188         .upper_margin           = 0,
 189         .lower_margin           = 0,
 190         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
 191         .lccr0                  = LCCR0_Act,
 192         .lccr3                  = LCCR3_PCP,
 193         .pxafb_backlight_power  = mainstone_backlight_power,
 194 };
 195
 196 static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
 197         .pixclock               = 110000,
 198         .xres                   = 240,
 199         .yres                   = 320,
 200         .bpp                    = 16,
 201         .hsync_len              = 4,
 202         .left_margin            = 8,
 203         .right_margin           = 20,
 204         .vsync_len              = 3,
 205         .upper_margin           = 1,
 206         .lower_margin           = 10,
 207         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
 208         .lccr0                  = LCCR0_Act,
 209         .lccr3                  = LCCR3_PCP,
 210         .pxafb_backlight_power  = mainstone_backlight_power,
 211 };
 212
 213 static int mainstone_mci_init(struct device *dev, irqreturn_t (*mstone_detect_int)(int, void *, struct pt_regs *), void *data)
 214 {
 215         int err;
 216
 217         /*
 218          * setup GPIO for PXA27x MMC controller
 219          */
 220         pxa_gpio_mode(GPIO32_MMCCLK_MD);
 221         pxa_gpio_mode(GPIO112_MMCCMD_MD);
 222         pxa_gpio_mode(GPIO92_MMCDAT0_MD);
 223         pxa_gpio_mode(GPIO109_MMCDAT1_MD);
 224         pxa_gpio_mode(GPIO110_MMCDAT2_MD);
 225         pxa_gpio_mode(GPIO111_MMCDAT3_MD);
 226
 227         /* make sure SD/Memory Stick multiplexer's signals
 228          * are routed to MMC controller
 229          */
 230         MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
 231
 232         err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, SA_INTERRUPT,
 233                              "MMC card detect", data);
 234         if (err) {
 235                 printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
 236                 return -1;
 237         }
 238
 239         return 0;
 240 }
 241
 242 static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
 243 {
 244         struct pxamci_platform_data* p_d = dev->platform_data;
 245
 246         if (( 1 << vdd) & p_d->ocr_mask) {
 247                 printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
 248                 MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
 249                 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
 250         } else {
 251                 printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
 252                 MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
 253         }
 254 }
 255
 256 static void mainstone_mci_exit(struct device *dev, void *data)
 257 {
 258         free_irq(MAINSTONE_MMC_IRQ, data);
 259 }
 260
 261 static struct pxamci_platform_data mainstone_mci_platform_data = {
 262         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 263         .init           = mainstone_mci_init,
 264         .setpower       = mainstone_mci_setpower,
 265         .exit           = mainstone_mci_exit,
 266 };
 267
 268 static void __init mainstone_init(void)
 269 {
 270         /*
 271          * On Mainstone, we route AC97_SYSCLK via GPIO45 to
 272          * the audio daughter card
 273          */
 274         pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
 275
 276         platform_device_register(&smc91x_device);
 277         platform_device_register(&mst_audio_device);
 278
 279         /* reading Mainstone's "Virtual Configuration Register"
 280            might be handy to select LCD type here */
 281         if (0)
 282                 set_pxa_fb_info(&toshiba_ltm04c380k);
 283         else
 284                 set_pxa_fb_info(&toshiba_ltm035a776c);
 285
 286         pxa_set_mci_info(&mainstone_mci_platform_data);
 287 }
 288
 289
 290 static struct map_desc mainstone_io_desc[] __initdata = {
 291   { MST_FPGA_VIRT, MST_FPGA_PHYS, 0x00100000, MT_DEVICE }, /* CPLD */
 292 };
 293
 294 static void __init mainstone_map_io(void)
 295 {
 296         pxa_map_io();
 297         iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
 298
 299         /* initialize sleep mode regs (wake-up sources, etc) */
 300         PGSR0 = 0x00008800;
 301         PGSR1 = 0x00000002;
 302         PGSR2 = 0x0001FC00;
 303         PGSR3 = 0x00001F81;
 304         PWER  = 0xC0000002;
 305         PRER  = 0x00000002;
 306         PFER  = 0x00000002;
 307 }
 308
 309 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
 310         MAINTAINER("MontaVista Software Inc.")
 311         BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
 312         MAPIO(mainstone_map_io)
 313         INITIRQ(mainstone_init_irq)
 314         .timer          = &pxa_timer,
 315         INIT_MACHINE(mainstone_init)
 316 MACHINE_END