err.no Git - linux-2.6/blob - arch/arm/mach-pxa/corgi.c

   1 /*
   2  * Support for Sharp SL-C7xx PDAs
   3  * Models: SL-C700 (Corgi), SL-C750 (Shepherd), SL-C760 (Husky)
   4  *
   5  * Copyright (c) 2004-2005 Richard Purdie
   6  *
   7  * Based on Sharp's 2.4 kernel patches/lubbock.c
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/init.h>
  17 #include <linux/device.h>
  18 #include <linux/major.h>
  19 #include <linux/fs.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/mmc/host.h>
  22
  23 #include <asm/setup.h>
  24 #include <asm/memory.h>
  25 #include <asm/mach-types.h>
  26 #include <asm/hardware.h>
  27 #include <asm/irq.h>
  28 #include <asm/io.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/irq.h>
  36 #include <asm/arch/mmc.h>
  37 #include <asm/arch/udc.h>
  38 #include <asm/arch/corgi.h>
  39
  40 #include <asm/mach/sharpsl_param.h>
  41 #include <asm/hardware/scoop.h>
  42 #include <video/w100fb.h>
  43
  44 #include "generic.h"
  45
  46
  47 /*
  48  * Corgi SCOOP Device
  49  */
  50 static struct resource corgi_scoop_resources[] = {
  51         [0] = {
  52                 .start          = 0x10800000,
  53                 .end            = 0x10800fff,
  54                 .flags          = IORESOURCE_MEM,
  55         },
  56 };
  57
  58 static struct scoop_config corgi_scoop_setup = {
  59         .io_dir         = CORGI_SCOOP_IO_DIR,
  60         .io_out         = CORGI_SCOOP_IO_OUT,
  61 };
  62
  63 static struct scoop_pcmcia_dev corgi_pcmcia_scoop[] = {
  64 {
  65         .dev        = &corgiscoop_device.dev,
  66         .irq        = CORGI_IRQ_GPIO_CF_IRQ,
  67         .cd_irq     = CORGI_IRQ_GPIO_CF_CD,
  68         .cd_irq_str = "PCMCIA0 CD",
  69 },
  70 };
  71
  72 struct platform_device corgiscoop_device = {
  73         .name           = "sharp-scoop",
  74         .id             = -1,
  75         .dev            = {
  76                 .platform_data  = &corgi_scoop_setup,
  77         },
  78         .num_resources  = ARRAY_SIZE(corgi_scoop_resources),
  79         .resource       = corgi_scoop_resources,
  80 };
  81
  82
  83 /*
  84  * Corgi SSP Device
  85  *
  86  * Set the parent as the scoop device because a lot of SSP devices
  87  * also use scoop functions and this makes the power up/down order
  88  * work correctly.
  89  */
  90 static struct platform_device corgissp_device = {
  91         .name           = "corgi-ssp",
  92         .dev            = {
  93                 .parent = &corgiscoop_device.dev,
  94         },
  95         .id             = -1,
  96 };
  97
  98
  99 /*
 100  * Corgi w100 Frame Buffer Device
 101  */
 102 static struct w100fb_mach_info corgi_fb_info = {
 103         .w100fb_ssp_send        = corgi_ssp_lcdtg_send,
 104         .comadj                         = -1,
 105         .phadadj                        = -1,
 106 };
 107
 108 static struct resource corgi_fb_resources[] = {
 109         [0] = {
 110                 .start          = 0x08000000,
 111                 .end            = 0x08ffffff,
 112                 .flags          = IORESOURCE_MEM,
 113         },
 114 };
 115
 116 static struct platform_device corgifb_device = {
 117         .name           = "w100fb",
 118         .id             = -1,
 119         .dev            = {
 120                 .platform_data  = &corgi_fb_info,
 121                 .parent = &corgissp_device.dev,
 122         },
 123         .num_resources  = ARRAY_SIZE(corgi_fb_resources),
 124         .resource       = corgi_fb_resources,
 125 };
 126
 127
 128 /*
 129  * Corgi Backlight Device
 130  */
 131 static struct platform_device corgibl_device = {
 132         .name           = "corgi-bl",
 133         .dev            = {
 134                 .parent = &corgifb_device.dev,
 135         },
 136         .id             = -1,
 137 };
 138
 139
 140 /*
 141  * MMC/SD Device
 142  *
 143  * The card detect interrupt isn't debounced so we delay it by HZ/4
 144  * to give the card a chance to fully insert/eject.
 145  */
 146 static struct mmc_detect {
 147         struct timer_list detect_timer;
 148         void *devid;
 149 } mmc_detect;
 150
 151 static void mmc_detect_callback(unsigned long data)
 152 {
 153         mmc_detect_change(mmc_detect.devid);
 154 }
 155
 156 static irqreturn_t corgi_mmc_detect_int(int irq, void *devid, struct pt_regs *regs)
 157 {
 158         mmc_detect.devid=devid;
 159         mod_timer(&mmc_detect.detect_timer, jiffies + HZ/4);
 160         return IRQ_HANDLED;
 161 }
 162
 163 static int corgi_mci_init(struct device *dev, irqreturn_t (*unused_detect_int)(int, void *, struct pt_regs *), void *data)
 164 {
 165         int err;
 166
 167         /* setup GPIO for PXA25x MMC controller */
 168         pxa_gpio_mode(GPIO6_MMCCLK_MD);
 169         pxa_gpio_mode(GPIO8_MMCCS0_MD);
 170         pxa_gpio_mode(CORGI_GPIO_nSD_DETECT | GPIO_IN);
 171         pxa_gpio_mode(CORGI_GPIO_SD_PWR | GPIO_OUT);
 172
 173         init_timer(&mmc_detect.detect_timer);
 174         mmc_detect.detect_timer.function = mmc_detect_callback;
 175         mmc_detect.detect_timer.data = (unsigned long) &mmc_detect;
 176
 177         err = request_irq(CORGI_IRQ_GPIO_nSD_DETECT, corgi_mmc_detect_int, SA_INTERRUPT,
 178                              "MMC card detect", data);
 179         if (err) {
 180                 printk(KERN_ERR "corgi_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
 181                 return -1;
 182         }
 183
 184         set_irq_type(CORGI_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);
 185
 186         return 0;
 187 }
 188
 189 static void corgi_mci_setpower(struct device *dev, unsigned int vdd)
 190 {
 191         struct pxamci_platform_data* p_d = dev->platform_data;
 192
 193         if (( 1 << vdd) & p_d->ocr_mask) {
 194                 printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
 195                 GPSR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
 196         } else {
 197                 printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
 198                 GPCR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
 199         }
 200 }
 201
 202 static void corgi_mci_exit(struct device *dev, void *data)
 203 {
 204         free_irq(CORGI_IRQ_GPIO_nSD_DETECT, data);
 205         del_timer(&mmc_detect.detect_timer);
 206 }
 207
 208 static struct pxamci_platform_data corgi_mci_platform_data = {
 209         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 210         .init           = corgi_mci_init,
 211         .setpower       = corgi_mci_setpower,
 212         .exit           = corgi_mci_exit,
 213 };
 214
 215
 216 /*
 217  * USB Device Controller
 218  */
 219 static void corgi_udc_command(int cmd)
 220 {
 221         switch(cmd)     {
 222         case PXA2XX_UDC_CMD_CONNECT:
 223                 GPSR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
 224                 break;
 225         case PXA2XX_UDC_CMD_DISCONNECT:
 226                 GPCR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
 227                 break;
 228         }
 229 }
 230
 231 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 232         /* no connect GPIO; corgi can't tell connection status */
 233         .udc_command            = corgi_udc_command,
 234 };
 235
 236
 237 static struct platform_device *devices[] __initdata = {
 238         &corgiscoop_device,
 239         &corgissp_device,
 240         &corgifb_device,
 241         &corgibl_device,
 242 };
 243
 244 static void __init corgi_init(void)
 245 {
 246         corgi_fb_info.comadj=sharpsl_param.comadj;
 247         corgi_fb_info.phadadj=sharpsl_param.phadadj;
 248
 249         pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
 250         pxa_set_udc_info(&udc_info);
 251         pxa_set_mci_info(&corgi_mci_platform_data);
 252
 253         scoop_num = 1;
 254         scoop_devs = &corgi_pcmcia_scoop[0];
 255
 256         platform_add_devices(devices, ARRAY_SIZE(devices));
 257 }
 258
 259 static void __init fixup_corgi(struct machine_desc *desc,
 260                 struct tag *tags, char **cmdline, struct meminfo *mi)
 261 {
 262         sharpsl_save_param();
 263         mi->nr_banks=1;
 264         mi->bank[0].start = 0xa0000000;
 265         mi->bank[0].node = 0;
 266         if (machine_is_corgi())
 267                 mi->bank[0].size = (32*1024*1024);
 268         else
 269                 mi->bank[0].size = (64*1024*1024);
 270 }
 271
 272 static void __init corgi_init_irq(void)
 273 {
 274         pxa_init_irq();
 275 }
 276
 277 static struct map_desc corgi_io_desc[] __initdata = {
 278 /*    virtual     physical    length      */
 279 /*      { 0xf1000000, 0x08000000, 0x01000000, MT_DEVICE },*/ /* LCDC (readable for Qt driver) */
 280 /*      { 0xef700000, 0x10800000, 0x00001000, MT_DEVICE },*/  /* SCOOP */
 281         { 0xef800000, 0x00000000, 0x00800000, MT_DEVICE }, /* Boot Flash */
 282 };
 283
 284 static void __init corgi_map_io(void)
 285 {
 286         pxa_map_io();
 287         iotable_init(corgi_io_desc,ARRAY_SIZE(corgi_io_desc));
 288
 289         /* setup sleep mode values */
 290         PWER  = 0x00000002;
 291         PFER  = 0x00000000;
 292         PRER  = 0x00000002;
 293         PGSR0 = 0x0158C000;
 294         PGSR1 = 0x00FF0080;
 295         PGSR2 = 0x0001C004;
 296         /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
 297         PCFR |= PCFR_OPDE;
 298 }
 299
 300 #ifdef CONFIG_MACH_CORGI
 301 MACHINE_START(CORGI, "SHARP Corgi")
 302         .phys_ram       = 0xa0000000,
 303         .phys_io        = 0x40000000,
 304         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 305         .fixup          = fixup_corgi,
 306         .map_io         = corgi_map_io,
 307         .init_irq       = corgi_init_irq,
 308         .init_machine   = corgi_init,
 309         .timer          = &pxa_timer,
 310 MACHINE_END
 311 #endif
 312
 313 #ifdef CONFIG_MACH_SHEPHERD
 314 MACHINE_START(SHEPHERD, "SHARP Shepherd")
 315         .phys_ram       = 0xa0000000,
 316         .phys_io        = 0x40000000,
 317         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 318         .fixup          = fixup_corgi,
 319         .map_io         = corgi_map_io,
 320         .init_irq       = corgi_init_irq,
 321         .init_machine   = corgi_init,
 322         .timer          = &pxa_timer,
 323 MACHINE_END
 324 #endif
 325
 326 #ifdef CONFIG_MACH_HUSKY
 327 MACHINE_START(HUSKY, "SHARP Husky")
 328         .phys_ram       = 0xa0000000,
 329         .phys_io        = 0x40000000,
 330         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 331         .fixup          = fixup_corgi,
 332         .map_io         = corgi_map_io,
 333         .init_irq       = corgi_init_irq,
 334         .init_machine   = corgi_init,
 335         .timer          = &pxa_timer,
 336 MACHINE_END
 337 #endif
 338