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