arch/arm/mach-sa1100/collie.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/collie.c
   3  *
   4  * May be copied or modified under the terms of the GNU General Public
   5  * License.  See linux/COPYING for more information.
   6  *
   7  * This file contains all Collie-specific tweaks.
   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  * ChangeLog:
  14  *  2006 Pavel Machek <pavel@suse.cz>
  15  *  03-06-2004 John Lenz <lenz@cs.wisc.edu>
  16  *  06-04-2002 Chris Larson <kergoth@digitalnemesis.net>
  17  *  04-16-2001 Lineo Japan,Inc. ...
  18  */
  19
  20 #include <linux/init.h>
  21 #include <linux/kernel.h>
  22 #include <linux/tty.h>
  23 #include <linux/delay.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/mtd/mtd.h>
  26 #include <linux/mtd/partitions.h>
  27 #include <linux/timer.h>
  28
  29 #include <asm/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/irq.h>
  32 #include <asm/setup.h>
  33 #include <asm/arch/collie.h>
  34
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/flash.h>
  37 #include <asm/mach/map.h>
  38 #include <asm/mach/serial_sa1100.h>
  39
  40 #include <asm/hardware/scoop.h>
  41 #include <asm/mach/sharpsl_param.h>
  42 #include <asm/hardware/locomo.h>
  43 #include <asm/arch/mcp.h>
  44
  45 #include "generic.h"
  46
  47 static struct resource collie_scoop_resources[] = {
  48         [0] = {
  49                 .start          = 0x40800000,
  50                 .end            = 0x40800fff,
  51                 .flags          = IORESOURCE_MEM,
  52         },
  53 };
  54
  55 static struct scoop_config collie_scoop_setup = {
  56         .io_dir         = COLLIE_SCOOP_IO_DIR,
  57         .io_out         = COLLIE_SCOOP_IO_OUT,
  58 };
  59
  60 struct platform_device colliescoop_device = {
  61         .name           = "sharp-scoop",
  62         .id             = -1,
  63         .dev            = {
  64                 .platform_data  = &collie_scoop_setup,
  65         },
  66         .num_resources  = ARRAY_SIZE(collie_scoop_resources),
  67         .resource       = collie_scoop_resources,
  68 };
  69
  70 static struct scoop_pcmcia_dev collie_pcmcia_scoop[] = {
  71 {
  72        .dev        = &colliescoop_device.dev,
  73        .irq        = COLLIE_IRQ_GPIO_CF_IRQ,
  74        .cd_irq     = COLLIE_IRQ_GPIO_CF_CD,
  75        .cd_irq_str = "PCMCIA0 CD",
  76 },
  77 };
  78
  79 static struct scoop_pcmcia_config collie_pcmcia_config = {
  80         .devs         = &collie_pcmcia_scoop[0],
  81         .num_devs     = 1,
  82 };
  83
  84
  85 static struct mcp_plat_data collie_mcp_data = {
  86         .mccr0          = MCCR0_ADM | MCCR0_ExtClk,
  87         .sclk_rate      = 9216000,
  88 };
  89
  90 #ifdef CONFIG_SHARP_LOCOMO
  91 /*
  92  * low-level UART features.
  93  */
  94 struct platform_device collie_locomo_device;
  95
  96 static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
  97 {
  98         if (mctrl & TIOCM_RTS)
  99                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 0);
 100         else
 101                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 1);
 102
 103         if (mctrl & TIOCM_DTR)
 104                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 0);
 105         else
 106                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 1);
 107 }
 108
 109 static u_int collie_uart_get_mctrl(struct uart_port *port)
 110 {
 111         int ret = TIOCM_CD;
 112         unsigned int r;
 113
 114         r = locomo_gpio_read_output(&collie_locomo_device.dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
 115         if (r == -ENODEV)
 116                 return ret;
 117         if (r & LOCOMO_GPIO_CTS)
 118                 ret |= TIOCM_CTS;
 119         if (r & LOCOMO_GPIO_DSR)
 120                 ret |= TIOCM_DSR;
 121
 122         return ret;
 123 }
 124
 125 static struct sa1100_port_fns collie_port_fns __initdata = {
 126         .set_mctrl      = collie_uart_set_mctrl,
 127         .get_mctrl      = collie_uart_get_mctrl,
 128 };
 129
 130 static int collie_uart_probe(struct locomo_dev *dev)
 131 {
 132         return 0;
 133 }
 134
 135 static int collie_uart_remove(struct locomo_dev *dev)
 136 {
 137         return 0;
 138 }
 139
 140 static struct locomo_driver collie_uart_driver = {
 141         .drv = {
 142                 .name = "collie_uart",
 143         },
 144         .devid  = LOCOMO_DEVID_UART,
 145         .probe  = collie_uart_probe,
 146         .remove = collie_uart_remove,
 147 };
 148
 149 static int __init collie_uart_init(void) {
 150         return locomo_driver_register(&collie_uart_driver);
 151 }
 152 device_initcall(collie_uart_init);
 153
 154 #endif
 155
 156
 157 static struct resource locomo_resources[] = {
 158         [0] = {
 159                 .start          = 0x40000000,
 160                 .end            = 0x40001fff,
 161                 .flags          = IORESOURCE_MEM,
 162         },
 163         [1] = {
 164                 .start          = IRQ_GPIO25,
 165                 .end            = IRQ_GPIO25,
 166                 .flags          = IORESOURCE_IRQ,
 167         },
 168 };
 169
 170 struct platform_device collie_locomo_device = {
 171         .name           = "locomo",
 172         .id             = 0,
 173         .num_resources  = ARRAY_SIZE(locomo_resources),
 174         .resource       = locomo_resources,
 175 };
 176
 177 static struct platform_device *devices[] __initdata = {
 178         &collie_locomo_device,
 179         &colliescoop_device,
 180 };
 181
 182 static struct mtd_partition collie_partitions[] = {
 183         {
 184                 .name           = "bootloader",
 185                 .offset         = 0,
 186                 .size           = 0x000C0000,
 187                 .mask_flags     = MTD_WRITEABLE
 188         }, {
 189                 .name           = "kernel",
 190                 .offset         = MTDPART_OFS_APPEND,
 191                 .size           = 0x00100000,
 192         }, {
 193                 .name           = "rootfs",
 194                 .offset         = MTDPART_OFS_APPEND,
 195                 .size           = 0x00e20000,
 196         }
 197 };
 198
 199 static void collie_set_vpp(int vpp)
 200 {
 201         write_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR) | COLLIE_SCP_VPEN);
 202         if (vpp)
 203                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) | COLLIE_SCP_VPEN);
 204         else
 205                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
 206 }
 207
 208 static struct flash_platform_data collie_flash_data = {
 209         .map_name       = "cfi_probe",
 210         .set_vpp        = collie_set_vpp,
 211         .parts          = collie_partitions,
 212         .nr_parts       = ARRAY_SIZE(collie_partitions),
 213 };
 214
 215 static struct resource collie_flash_resources[] = {
 216         {
 217                 .start  = SA1100_CS0_PHYS,
 218                 .end    = SA1100_CS0_PHYS + SZ_32M - 1,
 219                 .flags  = IORESOURCE_MEM,
 220         }
 221 };
 222
 223 static void __init collie_init(void)
 224 {
 225         int ret = 0;
 226
 227         /* cpu initialize */
 228         GAFR = ( GPIO_SSP_TXD | \
 229                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK | GPIO_TIC_ACK | \
 230                  GPIO_32_768kHz );
 231
 232         GPDR = ( GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 | \
 233                  GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD | \
 234                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK | \
 235                  GPIO_SDLC_AAF | GPIO_UART_SCLK1 | GPIO_32_768kHz );
 236         GPLR = GPIO_GPIO18;
 237
 238         // PPC pin setting
 239         PPDR = ( PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 | \
 240                  PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS | \
 241                  PPC_TXD1 | PPC_TXD2 | PPC_RXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM );
 242
 243         PSDR = ( PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4 );
 244
 245         GAFR |= GPIO_32_768kHz;
 246         GPDR |= GPIO_32_768kHz;
 247         TUCR  = TUCR_32_768kHz;
 248
 249         platform_scoop_config = &collie_pcmcia_config;
 250
 251         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 252         if (ret) {
 253                 printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
 254         }
 255
 256         sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
 257                               ARRAY_SIZE(collie_flash_resources));
 258         sa11x0_set_mcp_data(&collie_mcp_data);
 259
 260         sharpsl_save_param();
 261 }
 262
 263 static struct map_desc collie_io_desc[] __initdata = {
 264         {       /* 32M main flash (cs0) */
 265                 .virtual        = 0xe8000000,
 266                 .pfn            = __phys_to_pfn(0x00000000),
 267                 .length         = 0x02000000,
 268                 .type           = MT_DEVICE
 269         }, {    /* 32M boot flash (cs1) */
 270                 .virtual        = 0xea000000,
 271                 .pfn            = __phys_to_pfn(0x08000000),
 272                 .length         = 0x02000000,
 273                 .type           = MT_DEVICE
 274         }
 275 };
 276
 277 static void __init collie_map_io(void)
 278 {
 279         sa1100_map_io();
 280         iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
 281
 282 #ifdef CONFIG_SHARP_LOCOMO
 283         sa1100_register_uart_fns(&collie_port_fns);
 284 #endif
 285         sa1100_register_uart(0, 3);
 286         sa1100_register_uart(1, 1);
 287 }
 288
 289 MACHINE_START(COLLIE, "Sharp-Collie")
 290         .phys_io        = 0x80000000,
 291         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 292         .map_io         = collie_map_io,
 293         .init_irq       = sa1100_init_irq,
 294         .timer          = &sa1100_timer,
 295         .init_machine   = collie_init,
 296 MACHINE_END