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/platform_device.h>
  18 #include <linux/sysdev.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/sched.h>
  21 #include <linux/bitops.h>
  22 #include <linux/fb.h>
  23
  24 #include <asm/types.h>
  25 #include <asm/setup.h>
  26 #include <asm/memory.h>
  27 #include <asm/mach-types.h>
  28 #include <asm/hardware.h>
  29 #include <asm/irq.h>
  30
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33 #include <asm/mach/irq.h>
  34
  35 #include <asm/arch/pxa-regs.h>
  36 #include <asm/arch/mainstone.h>
  37 #include <asm/arch/audio.h>
  38 #include <asm/arch/pxafb.h>
  39 #include <asm/arch/mmc.h>
  40 #include <asm/arch/irda.h>
  41
  42 #include "generic.h"
  43
  44
  45 static unsigned long mainstone_irq_enabled;
  46
  47 static void mainstone_mask_irq(unsigned int irq)
  48 {
  49         int mainstone_irq = (irq - MAINSTONE_IRQ(0));
  50         MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
  51 }
  52
  53 static void mainstone_unmask_irq(unsigned int irq)
  54 {
  55         int mainstone_irq = (irq - MAINSTONE_IRQ(0));
  56         /* the irq can be acknowledged only if deasserted, so it's done here */
  57         MST_INTSETCLR &= ~(1 << mainstone_irq);
  58         MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
  59 }
  60
  61 static struct irqchip mainstone_irq_chip = {
  62         .ack            = mainstone_mask_irq,
  63         .mask           = mainstone_mask_irq,
  64         .unmask         = mainstone_unmask_irq,
  65 };
  66
  67 static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc,
  68                                   struct pt_regs *regs)
  69 {
  70         unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
  71         do {
  72                 GEDR(0) = GPIO_bit(0);  /* clear useless edge notification */
  73                 if (likely(pending)) {
  74                         irq = MAINSTONE_IRQ(0) + __ffs(pending);
  75                         desc = irq_desc + irq;
  76                         desc_handle_irq(irq, desc, regs);
  77                 }
  78                 pending = MST_INTSETCLR & mainstone_irq_enabled;
  79         } while (pending);
  80 }
  81
  82 static void __init mainstone_init_irq(void)
  83 {
  84         int irq;
  85
  86         pxa_init_irq();
  87
  88         /* setup extra Mainstone irqs */
  89         for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
  90                 set_irq_chip(irq, &mainstone_irq_chip);
  91                 set_irq_handler(irq, do_level_IRQ);
  92                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
  93         }
  94         set_irq_flags(MAINSTONE_IRQ(8), 0);
  95         set_irq_flags(MAINSTONE_IRQ(12), 0);
  96
  97         MST_INTMSKENA = 0;
  98         MST_INTSETCLR = 0;
  99
 100         set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
 101         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
 102 }
 103
 104 #ifdef CONFIG_PM
 105
 106 static int mainstone_irq_resume(struct sys_device *dev)
 107 {
 108         MST_INTMSKENA = mainstone_irq_enabled;
 109         return 0;
 110 }
 111
 112 static struct sysdev_class mainstone_irq_sysclass = {
 113         set_kset_name("cpld_irq"),
 114         .resume = mainstone_irq_resume,
 115 };
 116
 117 static struct sys_device mainstone_irq_device = {
 118         .cls = &mainstone_irq_sysclass,
 119 };
 120
 121 static int __init mainstone_irq_device_init(void)
 122 {
 123         int ret = sysdev_class_register(&mainstone_irq_sysclass);
 124         if (ret == 0)
 125                 ret = sysdev_register(&mainstone_irq_device);
 126         return ret;
 127 }
 128
 129 device_initcall(mainstone_irq_device_init);
 130
 131 #endif
 132
 133
 134 static struct resource smc91x_resources[] = {
 135         [0] = {
 136                 .start  = (MST_ETH_PHYS + 0x300),
 137                 .end    = (MST_ETH_PHYS + 0xfffff),
 138                 .flags  = IORESOURCE_MEM,
 139         },
 140         [1] = {
 141                 .start  = MAINSTONE_IRQ(3),
 142                 .end    = MAINSTONE_IRQ(3),
 143                 .flags  = IORESOURCE_IRQ,
 144         }
 145 };
 146
 147 static struct platform_device smc91x_device = {
 148         .name           = "smc91x",
 149         .id             = 0,
 150         .num_resources  = ARRAY_SIZE(smc91x_resources),
 151         .resource       = smc91x_resources,
 152 };
 153
 154 static int mst_audio_startup(snd_pcm_substream_t *substream, void *priv)
 155 {
 156         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 157                 MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
 158         return 0;
 159 }
 160
 161 static void mst_audio_shutdown(snd_pcm_substream_t *substream, void *priv)
 162 {
 163         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 164                 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
 165 }
 166
 167 static long mst_audio_suspend_mask;
 168
 169 static void mst_audio_suspend(void *priv)
 170 {
 171         mst_audio_suspend_mask = MST_MSCWR2;
 172         MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
 173 }
 174
 175 static void mst_audio_resume(void *priv)
 176 {
 177         MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
 178 }
 179
 180 static pxa2xx_audio_ops_t mst_audio_ops = {
 181         .startup        = mst_audio_startup,
 182         .shutdown       = mst_audio_shutdown,
 183         .suspend        = mst_audio_suspend,
 184         .resume         = mst_audio_resume,
 185 };
 186
 187 static struct platform_device mst_audio_device = {
 188         .name           = "pxa2xx-ac97",
 189         .id             = -1,
 190         .dev            = { .platform_data = &mst_audio_ops },
 191 };
 192
 193 static void mainstone_backlight_power(int on)
 194 {
 195         if (on) {
 196                 pxa_gpio_mode(GPIO16_PWM0_MD);
 197                 pxa_set_cken(CKEN0_PWM0, 1);
 198                 PWM_CTRL0 = 0;
 199                 PWM_PWDUTY0 = 0x3ff;
 200                 PWM_PERVAL0 = 0x3ff;
 201         } else {
 202                 PWM_CTRL0 = 0;
 203                 PWM_PWDUTY0 = 0x0;
 204                 PWM_PERVAL0 = 0x3FF;
 205                 pxa_set_cken(CKEN0_PWM0, 0);
 206         }
 207 }
 208
 209 static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
 210         .pixclock               = 50000,
 211         .xres                   = 640,
 212         .yres                   = 480,
 213         .bpp                    = 16,
 214         .hsync_len              = 1,
 215         .left_margin            = 0x9f,
 216         .right_margin           = 1,
 217         .vsync_len              = 44,
 218         .upper_margin           = 0,
 219         .lower_margin           = 0,
 220         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
 221         .lccr0                  = LCCR0_Act,
 222         .lccr3                  = LCCR3_PCP,
 223         .pxafb_backlight_power  = mainstone_backlight_power,
 224 };
 225
 226 static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
 227         .pixclock               = 110000,
 228         .xres                   = 240,
 229         .yres                   = 320,
 230         .bpp                    = 16,
 231         .hsync_len              = 4,
 232         .left_margin            = 8,
 233         .right_margin           = 20,
 234         .vsync_len              = 3,
 235         .upper_margin           = 1,
 236         .lower_margin           = 10,
 237         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
 238         .lccr0                  = LCCR0_Act,
 239         .lccr3                  = LCCR3_PCP,
 240         .pxafb_backlight_power  = mainstone_backlight_power,
 241 };
 242
 243 static int mainstone_mci_init(struct device *dev, irqreturn_t (*mstone_detect_int)(int, void *, struct pt_regs *), void *data)
 244 {
 245         int err;
 246
 247         /*
 248          * setup GPIO for PXA27x MMC controller
 249          */
 250         pxa_gpio_mode(GPIO32_MMCCLK_MD);
 251         pxa_gpio_mode(GPIO112_MMCCMD_MD);
 252         pxa_gpio_mode(GPIO92_MMCDAT0_MD);
 253         pxa_gpio_mode(GPIO109_MMCDAT1_MD);
 254         pxa_gpio_mode(GPIO110_MMCDAT2_MD);
 255         pxa_gpio_mode(GPIO111_MMCDAT3_MD);
 256
 257         /* make sure SD/Memory Stick multiplexer's signals
 258          * are routed to MMC controller
 259          */
 260         MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
 261
 262         err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, SA_INTERRUPT,
 263                              "MMC card detect", data);
 264         if (err) {
 265                 printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
 266                 return -1;
 267         }
 268
 269         return 0;
 270 }
 271
 272 static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
 273 {
 274         struct pxamci_platform_data* p_d = dev->platform_data;
 275
 276         if (( 1 << vdd) & p_d->ocr_mask) {
 277                 printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
 278                 MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
 279                 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
 280         } else {
 281                 printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
 282                 MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
 283         }
 284 }
 285
 286 static void mainstone_mci_exit(struct device *dev, void *data)
 287 {
 288         free_irq(MAINSTONE_MMC_IRQ, data);
 289 }
 290
 291 static struct pxamci_platform_data mainstone_mci_platform_data = {
 292         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 293         .init           = mainstone_mci_init,
 294         .setpower       = mainstone_mci_setpower,
 295         .exit           = mainstone_mci_exit,
 296 };
 297
 298 static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
 299 {
 300         unsigned long flags;
 301
 302         local_irq_save(flags);
 303         if (mode & IR_SIRMODE) {
 304                 MST_MSCWR1 &= ~MST_MSCWR1_IRDA_FIR;
 305         } else if (mode & IR_FIRMODE) {
 306                 MST_MSCWR1 |= MST_MSCWR1_IRDA_FIR;
 307         }
 308         if (mode & IR_OFF) {
 309                 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
 310         } else {
 311                 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
 312         }
 313         local_irq_restore(flags);
 314 }
 315
 316 static struct pxaficp_platform_data mainstone_ficp_platform_data = {
 317         .transceiver_cap  = IR_SIRMODE | IR_FIRMODE | IR_OFF,
 318         .transceiver_mode = mainstone_irda_transceiver_mode,
 319 };
 320
 321 static void __init mainstone_init(void)
 322 {
 323         /*
 324          * On Mainstone, we route AC97_SYSCLK via GPIO45 to
 325          * the audio daughter card
 326          */
 327         pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
 328
 329         platform_device_register(&smc91x_device);
 330         platform_device_register(&mst_audio_device);
 331
 332         /* reading Mainstone's "Virtual Configuration Register"
 333            might be handy to select LCD type here */
 334         if (0)
 335                 set_pxa_fb_info(&toshiba_ltm04c380k);
 336         else
 337                 set_pxa_fb_info(&toshiba_ltm035a776c);
 338
 339         pxa_set_mci_info(&mainstone_mci_platform_data);
 340         pxa_set_ficp_info(&mainstone_ficp_platform_data);
 341 }
 342
 343
 344 static struct map_desc mainstone_io_desc[] __initdata = {
 345         {       /* CPLD */
 346                 .virtual        =  MST_FPGA_VIRT,
 347                 .pfn            = __phys_to_pfn(MST_FPGA_PHYS),
 348                 .length         = 0x00100000,
 349                 .type           = MT_DEVICE
 350         }
 351 };
 352
 353 static void __init mainstone_map_io(void)
 354 {
 355         pxa_map_io();
 356         iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
 357
 358         /* initialize sleep mode regs (wake-up sources, etc) */
 359         PGSR0 = 0x00008800;
 360         PGSR1 = 0x00000002;
 361         PGSR2 = 0x0001FC00;
 362         PGSR3 = 0x00001F81;
 363         PWER  = 0xC0000002;
 364         PRER  = 0x00000002;
 365         PFER  = 0x00000002;
 366         /*      for use I SRAM as framebuffer.  */
 367         PSLR |= 0xF04;
 368         PCFR = 0x66;
 369         /*      For Keypad wakeup.      */
 370         KPC &=~KPC_ASACT;
 371         KPC |=KPC_AS;
 372         PKWR  = 0x000FD000;
 373         /*      Need read PKWR back after set it.       */
 374         PKWR;
 375 }
 376
 377 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
 378         /* Maintainer: MontaVista Software Inc. */
 379         .phys_ram       = 0xa0000000,
 380         .phys_io        = 0x40000000,
 381         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 382         .map_io         = mainstone_map_io,
 383         .init_irq       = mainstone_init_irq,
 384         .timer          = &pxa_timer,
 385         .init_machine   = mainstone_init,
 386 MACHINE_END