release/src-rt-6.x/linux/linux-2.6/arch/arm/mach-pxa/tosa.c

   1 /*
   2  *  Support for Sharp SL-C6000x PDAs
   3  *  Model: (Tosa)
   4  *
   5  *  Copyright (c) 2005 Dirk Opfer
   6  *
   7  *      Based on code written by Sharp/Lineo for 2.4 kernels
   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/platform_device.h>
  18 #include <linux/major.h>
  19 #include <linux/fs.h>
  20 #include <linux/interrupt.h>
  21 #include <linux/mmc/host.h>
  22 #include <linux/pm.h>
  23 #include <linux/delay.h>
  24
  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 #include <asm/system.h>
  31 #include <asm/arch/pxa-regs.h>
  32 #include <asm/arch/irda.h>
  33 #include <asm/arch/mmc.h>
  34 #include <asm/arch/udc.h>
  35
  36 #include <asm/mach/arch.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/irq.h>
  39 #include <asm/arch/tosa.h>
  40
  41 #include <asm/hardware/scoop.h>
  42 #include <asm/mach/sharpsl_param.h>
  43
  44 #include "generic.h"
  45
  46
  47 /*
  48  * SCOOP Device
  49  */
  50 static struct resource tosa_scoop_resources[] = {
  51         [0] = {
  52                 .start  = TOSA_CF_PHYS,
  53                 .end    = TOSA_CF_PHYS + 0xfff,
  54                 .flags  = IORESOURCE_MEM,
  55         },
  56 };
  57
  58 static struct scoop_config tosa_scoop_setup = {
  59         .io_dir         = TOSA_SCOOP_IO_DIR,
  60         .io_out         = TOSA_SCOOP_IO_OUT,
  61
  62 };
  63
  64 struct platform_device tosascoop_device = {
  65         .name           = "sharp-scoop",
  66         .id             = 0,
  67         .dev            = {
  68                 .platform_data  = &tosa_scoop_setup,
  69         },
  70         .num_resources  = ARRAY_SIZE(tosa_scoop_resources),
  71         .resource       = tosa_scoop_resources,
  72 };
  73
  74
  75 /*
  76  * SCOOP Device Jacket
  77  */
  78 static struct resource tosa_scoop_jc_resources[] = {
  79         [0] = {
  80                 .start          = TOSA_SCOOP_PHYS + 0x40,
  81                 .end            = TOSA_SCOOP_PHYS + 0xfff,
  82                 .flags          = IORESOURCE_MEM,
  83         },
  84 };
  85
  86 static struct scoop_config tosa_scoop_jc_setup = {
  87         .io_dir         = TOSA_SCOOP_JC_IO_DIR,
  88         .io_out         = TOSA_SCOOP_JC_IO_OUT,
  89 };
  90
  91 struct platform_device tosascoop_jc_device = {
  92         .name           = "sharp-scoop",
  93         .id             = 1,
  94         .dev            = {
  95                 .platform_data  = &tosa_scoop_jc_setup,
  96                 .parent         = &tosascoop_device.dev,
  97         },
  98         .num_resources  = ARRAY_SIZE(tosa_scoop_jc_resources),
  99         .resource       = tosa_scoop_jc_resources,
 100 };
 101
 102 /*
 103  * PCMCIA
 104  */
 105 static struct scoop_pcmcia_dev tosa_pcmcia_scoop[] = {
 106 {
 107         .dev        = &tosascoop_device.dev,
 108         .irq        = TOSA_IRQ_GPIO_CF_IRQ,
 109         .cd_irq     = TOSA_IRQ_GPIO_CF_CD,
 110         .cd_irq_str = "PCMCIA0 CD",
 111 },{
 112         .dev        = &tosascoop_jc_device.dev,
 113         .irq        = TOSA_IRQ_GPIO_JC_CF_IRQ,
 114         .cd_irq     = -1,
 115 },
 116 };
 117
 118 static void tosa_pcmcia_init(void)
 119 {
 120         /* Setup default state of GPIO outputs
 121            before we enable them as outputs. */
 122         GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) |
 123                 GPIO_bit(GPIO49_nPWE) | GPIO_bit(GPIO50_nPIOR) |
 124                 GPIO_bit(GPIO51_nPIOW) | GPIO_bit(GPIO52_nPCE_1) |
 125                 GPIO_bit(GPIO53_nPCE_2);
 126
 127         pxa_gpio_mode(GPIO48_nPOE_MD);
 128         pxa_gpio_mode(GPIO49_nPWE_MD);
 129         pxa_gpio_mode(GPIO50_nPIOR_MD);
 130         pxa_gpio_mode(GPIO51_nPIOW_MD);
 131         pxa_gpio_mode(GPIO55_nPREG_MD);
 132         pxa_gpio_mode(GPIO56_nPWAIT_MD);
 133         pxa_gpio_mode(GPIO57_nIOIS16_MD);
 134         pxa_gpio_mode(GPIO52_nPCE_1_MD);
 135         pxa_gpio_mode(GPIO53_nPCE_2_MD);
 136         pxa_gpio_mode(GPIO54_pSKTSEL_MD);
 137 }
 138
 139 static struct scoop_pcmcia_config tosa_pcmcia_config = {
 140         .devs         = &tosa_pcmcia_scoop[0],
 141         .num_devs     = 2,
 142         .pcmcia_init  = tosa_pcmcia_init,
 143 };
 144
 145 /*
 146  * USB Device Controller
 147  */
 148 static void tosa_udc_command(int cmd)
 149 {
 150         switch(cmd)     {
 151                 case PXA2XX_UDC_CMD_CONNECT:
 152                         set_scoop_gpio(&tosascoop_jc_device.dev,TOSA_SCOOP_JC_USB_PULLUP);
 153                         break;
 154                 case PXA2XX_UDC_CMD_DISCONNECT:
 155                         reset_scoop_gpio(&tosascoop_jc_device.dev,TOSA_SCOOP_JC_USB_PULLUP);
 156                         break;
 157         }
 158 }
 159
 160 static int tosa_udc_is_connected(void)
 161 {
 162         return ((GPLR(TOSA_GPIO_USB_IN) & GPIO_bit(TOSA_GPIO_USB_IN)) == 0);
 163 }
 164
 165
 166 static struct pxa2xx_udc_mach_info udc_info __initdata = {
 167         .udc_command            = tosa_udc_command,
 168         .udc_is_connected       = tosa_udc_is_connected,
 169 };
 170
 171 /*
 172  * MMC/SD Device
 173  */
 174 static struct pxamci_platform_data tosa_mci_platform_data;
 175
 176 static int tosa_mci_init(struct device *dev, irq_handler_t tosa_detect_int, void *data)
 177 {
 178         int err;
 179
 180         /* setup GPIO for PXA25x MMC controller */
 181         pxa_gpio_mode(GPIO6_MMCCLK_MD);
 182         pxa_gpio_mode(GPIO8_MMCCS0_MD);
 183         pxa_gpio_mode(TOSA_GPIO_nSD_DETECT | GPIO_IN);
 184
 185         tosa_mci_platform_data.detect_delay = msecs_to_jiffies(250);
 186
 187         err = request_irq(TOSA_IRQ_GPIO_nSD_DETECT, tosa_detect_int, IRQF_DISABLED,
 188                                 "MMC/SD card detect", data);
 189         if (err) {
 190                 printk(KERN_ERR "tosa_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
 191                 return -1;
 192         }
 193
 194         set_irq_type(TOSA_IRQ_GPIO_nSD_DETECT, IRQT_BOTHEDGE);
 195
 196         return 0;
 197 }
 198
 199 static void tosa_mci_setpower(struct device *dev, unsigned int vdd)
 200 {
 201         struct pxamci_platform_data* p_d = dev->platform_data;
 202
 203         if (( 1 << vdd) & p_d->ocr_mask) {
 204                 set_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_PWR_ON);
 205         } else {
 206                 reset_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_PWR_ON);
 207         }
 208 }
 209
 210 static int tosa_mci_get_ro(struct device *dev)
 211 {
 212         return (read_scoop_reg(&tosascoop_device.dev, SCOOP_GPWR)&TOSA_SCOOP_SD_WP);
 213 }
 214
 215 static void tosa_mci_exit(struct device *dev, void *data)
 216 {
 217         free_irq(TOSA_IRQ_GPIO_nSD_DETECT, data);
 218 }
 219
 220 static struct pxamci_platform_data tosa_mci_platform_data = {
 221         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 222         .init           = tosa_mci_init,
 223         .get_ro         = tosa_mci_get_ro,
 224         .setpower       = tosa_mci_setpower,
 225         .exit           = tosa_mci_exit,
 226 };
 227
 228 /*
 229  * Irda
 230  */
 231 static void tosa_irda_transceiver_mode(struct device *dev, int mode)
 232 {
 233         if (mode & IR_OFF) {
 234                 reset_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_IR_POWERDWN);
 235                 pxa_gpio_mode(GPIO47_STTXD|GPIO_DFLT_LOW);
 236                 pxa_gpio_mode(GPIO47_STTXD|GPIO_OUT);
 237         } else {
 238                 pxa_gpio_mode(GPIO47_STTXD_MD);
 239                 set_scoop_gpio(&tosascoop_device.dev,TOSA_SCOOP_IR_POWERDWN);
 240         }
 241 }
 242
 243 static struct pxaficp_platform_data tosa_ficp_platform_data = {
 244         .transceiver_cap  = IR_SIRMODE | IR_OFF,
 245         .transceiver_mode = tosa_irda_transceiver_mode,
 246 };
 247
 248 /*
 249  * Tosa Keyboard
 250  */
 251 static struct platform_device tosakbd_device = {
 252         .name           = "tosa-keyboard",
 253         .id             = -1,
 254 };
 255
 256 /*
 257  * Tosa LEDs
 258  */
 259 static struct platform_device tosaled_device = {
 260     .name   = "tosa-led",
 261     .id     = -1,
 262 };
 263
 264 static struct platform_device *devices[] __initdata = {
 265         &tosascoop_device,
 266         &tosascoop_jc_device,
 267         &tosakbd_device,
 268         &tosaled_device,
 269 };
 270
 271 static void tosa_poweroff(void)
 272 {
 273         RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR;
 274
 275         pxa_gpio_mode(TOSA_GPIO_ON_RESET | GPIO_OUT);
 276         GPSR(TOSA_GPIO_ON_RESET) = GPIO_bit(TOSA_GPIO_ON_RESET);
 277
 278         mdelay(1000);
 279         arm_machine_restart('h');
 280 }
 281
 282 static void tosa_restart(char mode)
 283 {
 284         /* Bootloader magic for a reboot */
 285         if((MSC0 & 0xffff0000) == 0x7ff00000)
 286                 MSC0 = (MSC0 & 0xffff) | 0x7ee00000;
 287
 288         tosa_poweroff();
 289 }
 290
 291 static void __init tosa_init(void)
 292 {
 293         pm_power_off = tosa_poweroff;
 294         arm_pm_restart = tosa_restart;
 295
 296         pxa_gpio_mode(TOSA_GPIO_ON_RESET | GPIO_IN);
 297         pxa_gpio_mode(TOSA_GPIO_TC6393_INT | GPIO_IN);
 298         pxa_gpio_mode(TOSA_GPIO_USB_IN | GPIO_IN);
 299
 300         /* setup sleep mode values */
 301         PWER  = 0x00000002;
 302         PFER  = 0x00000000;
 303         PRER  = 0x00000002;
 304         PGSR0 = 0x00000000;
 305         PGSR1 = 0x00FF0002;
 306         PGSR2 = 0x00014000;
 307         PCFR |= PCFR_OPDE;
 308
 309         /* enable batt_fault */
 310         PMCR = 0x01;
 311
 312         pxa_set_mci_info(&tosa_mci_platform_data);
 313         pxa_set_udc_info(&udc_info);
 314         pxa_set_ficp_info(&tosa_ficp_platform_data);
 315         platform_scoop_config = &tosa_pcmcia_config;
 316
 317         platform_add_devices(devices, ARRAY_SIZE(devices));
 318 }
 319
 320 static void __init fixup_tosa(struct machine_desc *desc,
 321                 struct tag *tags, char **cmdline, struct meminfo *mi)
 322 {
 323         sharpsl_save_param();
 324         mi->nr_banks=1;
 325         mi->bank[0].start = 0xa0000000;
 326         mi->bank[0].node = 0;
 327         mi->bank[0].size = (64*1024*1024);
 328 }
 329
 330 MACHINE_START(TOSA, "SHARP Tosa")
 331         .phys_io        = 0x40000000,
 332         .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
 333         .fixup          = fixup_tosa,
 334         .map_io         = pxa_map_io,
 335         .init_irq       = pxa_init_irq,
 336         .init_machine   = tosa_init,
 337         .timer          = &pxa_timer,
 338 MACHINE_END