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 struct platform_device corgiscoop_device = {
  64         .name           = "sharp-scoop",
  65         .id             = -1,
  66         .dev            = {
  67                 .platform_data  = &corgi_scoop_setup,
  68         },
  69         .num_resources  = ARRAY_SIZE(corgi_scoop_resources),
  70         .resource       = corgi_scoop_resources,
  71 };
  72
  73
  74 /*
  75  * Corgi SSP Device
  76  *
  77  * Set the parent as the scoop device because a lot of SSP devices
  78  * also use scoop functions and this makes the power up/down order
  79  * work correctly.
  80  */
  81 static struct platform_device corgissp_device = {
  82         .name           = "corgi-ssp",
  83         .dev            = {
  84                 .parent = &corgiscoop_device.dev,
  85         },
  86         .id             = -1,
  87 };
  88
  89
  90 /*
  91  * Corgi w100 Frame Buffer Device
  92  */
  93 static struct w100fb_mach_info corgi_fb_info = {
  94         .w100fb_ssp_send        = corgi_ssp_lcdtg_send,
  95         .comadj                         = -1,
  96         .phadadj                        = -1,
  97 };
  98
  99 static struct resource corgi_fb_resources[] = {
 100         [0] = {
 101                 .start          = 0x08000000,
 102                 .end            = 0x08ffffff,
 103                 .flags          = IORESOURCE_MEM,
 104         },
 105 };
 106
 107 static struct platform_device corgifb_device = {
 108         .name           = "w100fb",
 109         .id             = -1,
 110         .dev            = {
 111                 .platform_data  = &corgi_fb_info,
 112                 .parent = &corgissp_device.dev,
 113         },
 114         .num_resources  = ARRAY_SIZE(corgi_fb_resources),
 115         .resource       = corgi_fb_resources,
 116 };
 117
 118
 119 /*
 120  * Corgi Backlight Device
 121  */
 122 static struct platform_device corgibl_device = {
 123         .name           = "corgi-bl",
 124         .dev            = {
 125                 .parent = &corgifb_device.dev,
 126         },
 127         .id             = -1,
 128 };
 129
 130
 131 /*
 132  * MMC/SD Device
 133  *
 134  * The card detect interrupt isn't debounced so we delay it by HZ/4
 135  * to give the card a chance to fully insert/eject.
 136  */
 137 static struct mmc_detect {
 138         struct timer_list detect_timer;
 139         void *devid;
 140 } mmc_detect;
 141
 142 static void mmc_detect_callback(unsigned long data)
 143 {
 144         mmc_detect_change(mmc_detect.devid);
 145 }
 146
 147 static irqreturn_t corgi_mmc_detect_int(int irq, void *devid, struct pt_regs *regs)
 148 {
 149         mmc_detect.devid=devid;
 150         mod_timer(&mmc_detect.detect_timer, jiffies + HZ/4);
 151         return IRQ_HANDLED;
 152 }
 153
 154 static int corgi_mci_init(struct device *dev, irqreturn_t (*unused_detect_int)(int, void *, struct pt_regs *), void *data)
 155 {
 156         int err;
 157
 158         /* setup GPIO for PXA25x MMC controller */
 159         pxa_gpio_mode(GPIO6_MMCCLK_MD);
 160         pxa_gpio_mode(GPIO8_MMCCS0_MD);
 161         pxa_gpio_mode(CORGI_GPIO_nSD_DETECT | GPIO_IN);
 162         pxa_gpio_mode(CORGI_GPIO_SD_PWR | GPIO_OUT);
 163
 164         init_timer(&mmc_detect.detect_timer);
 165         mmc_detect.detect_timer.function = mmc_detect_callback;
 166         mmc_detect.detect_timer.data = (unsigned long) &mmc_detect;
 167
 168         err = request_irq(CORGI_IRQ_GPIO_nSD_DETECT, corgi_mmc_detect_int, SA_INTERRUPT,
 169                              "MMC card detect", data);
 170         if (err) {
 171                 printk(KERN_ERR "corgi_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
 172                 return -1;
 173         }
 174
 175         set_irq_type(CORGI_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);
 176
 177         return 0;
 178 }
 179
 180 static void corgi_mci_setpower(struct device *dev, unsigned int vdd)
 181 {
 182         struct pxamci_platform_data* p_d = dev->platform_data;
 183
 184         if (( 1 << vdd) & p_d->ocr_mask) {
 185                 printk(KERN_DEBUG "%s: on\n", __FUNCTION__);
 186                 GPSR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
 187         } else {
 188                 printk(KERN_DEBUG "%s: off\n", __FUNCTION__);
 189                 GPCR1 = GPIO_bit(CORGI_GPIO_SD_PWR);
 190         }
 191 }
 192
 193 static void corgi_mci_exit(struct device *dev, void *data)
 194 {
 195         free_irq(CORGI_IRQ_GPIO_nSD_DETECT, data);
 196         del_timer(&mmc_detect.detect_timer);
 197 }
 198
 199 static struct pxamci_platform_data corgi_mci_platform_data = {
 200         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 201         .init           = corgi_mci_init,
 202         .setpower       = corgi_mci_setpower,
 203         .exit           = corgi_mci_exit,
 204 };
 205
 206
 207 /*
 208  * USB Device Controller
 209  */
 210 static void corgi_udc_command(int cmd)
 211 {
 212         switch(cmd)     {
 213         case PXA2XX_UDC_CMD_CONNECT:
 214                 GPSR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
 215                 break;
 216         case PXA2XX_UDC_CMD_DISCONNECT:
 217                 GPCR(CORGI_GPIO_USB_PULLUP) = GPIO_bit(CORGI_GPIO_USB_PULLUP);
 218                 break;
 219         }
 220 }
 221
 222 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 223         /* no connect GPIO; corgi can't tell connection status */
 224         .udc_command            = corgi_udc_command,
 225 };
 226
 227
 228 static struct platform_device *devices[] __initdata = {
 229         &corgiscoop_device,
 230         &corgissp_device,
 231         &corgifb_device,
 232         &corgibl_device,
 233 };
 234
 235 static void __init corgi_init(void)
 236 {
 237         corgi_fb_info.comadj=sharpsl_param.comadj;
 238         corgi_fb_info.phadadj=sharpsl_param.phadadj;
 239
 240         pxa_gpio_mode(CORGI_GPIO_USB_PULLUP | GPIO_OUT);
 241         pxa_set_udc_info(&udc_info);
 242         pxa_set_mci_info(&corgi_mci_platform_data);
 243
 244         platform_add_devices(devices, ARRAY_SIZE(devices));
 245 }
 246
 247 static void __init fixup_corgi(struct machine_desc *desc,
 248                 struct tag *tags, char **cmdline, struct meminfo *mi)
 249 {
 250         sharpsl_save_param();
 251         mi->nr_banks=1;
 252         mi->bank[0].start = 0xa0000000;
 253         mi->bank[0].node = 0;
 254         if (machine_is_corgi())
 255                 mi->bank[0].size = (32*1024*1024);
 256         else
 257                 mi->bank[0].size = (64*1024*1024);
 258 }
 259
 260 static void __init corgi_init_irq(void)
 261 {
 262         pxa_init_irq();
 263 }
 264
 265 static struct map_desc corgi_io_desc[] __initdata = {
 266 /*    virtual     physical    length      */
 267 /*      { 0xf1000000, 0x08000000, 0x01000000, MT_DEVICE },*/ /* LCDC (readable for Qt driver) */
 268 /*      { 0xef700000, 0x10800000, 0x00001000, MT_DEVICE },*/  /* SCOOP */
 269         { 0xef800000, 0x00000000, 0x00800000, MT_DEVICE }, /* Boot Flash */
 270 };
 271
 272 static void __init corgi_map_io(void)
 273 {
 274         pxa_map_io();
 275         iotable_init(corgi_io_desc,ARRAY_SIZE(corgi_io_desc));
 276
 277         /* setup sleep mode values */
 278         PWER  = 0x00000002;
 279         PFER  = 0x00000000;
 280         PRER  = 0x00000002;
 281         PGSR0 = 0x0158C000;
 282         PGSR1 = 0x00FF0080;
 283         PGSR2 = 0x0001C004;
 284         /* Stop 3.6MHz and drive HIGH to PCMCIA and CS */
 285         PCFR |= PCFR_OPDE;
 286 }
 287
 288 #ifdef CONFIG_MACH_CORGI
 289 MACHINE_START(CORGI, "SHARP Corgi")
 290         BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
 291         FIXUP(fixup_corgi)
 292         MAPIO(corgi_map_io)
 293         INITIRQ(corgi_init_irq)
 294         .init_machine = corgi_init,
 295         .timer = &pxa_timer,
 296 MACHINE_END
 297 #endif
 298
 299 #ifdef CONFIG_MACH_SHEPHERD
 300 MACHINE_START(SHEPHERD, "SHARP Shepherd")
 301         BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
 302         FIXUP(fixup_corgi)
 303         MAPIO(corgi_map_io)
 304         INITIRQ(corgi_init_irq)
 305         .init_machine = corgi_init,
 306         .timer = &pxa_timer,
 307 MACHINE_END
 308 #endif
 309
 310 #ifdef CONFIG_MACH_HUSKY
 311 MACHINE_START(HUSKY, "SHARP Husky")
 312         BOOT_MEM(0xa0000000, 0x40000000, io_p2v(0x40000000))
 313         FIXUP(fixup_corgi)
 314         MAPIO(corgi_map_io)
 315         INITIRQ(corgi_init_irq)
 316         .init_machine = corgi_init,
 317         .timer = &pxa_timer,
 318 MACHINE_END
 319 #endif
 320