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 <mach/hardware.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/irq.h>
  32 #include <asm/setup.h>
  33 #include <mach/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 <mach/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 static struct mcp_plat_data collie_mcp_data = {
  85         .mccr0          = MCCR0_ADM | MCCR0_ExtClk,
  86         .sclk_rate      = 9216000,
  87 };
  88
  89 #ifdef CONFIG_SHARP_LOCOMO
  90 /*
  91  * low-level UART features.
  92  */
  93 struct platform_device collie_locomo_device;
  94
  95 static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
  96 {
  97         if (mctrl & TIOCM_RTS)
  98                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 0);
  99         else
 100                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_RTS, 1);
 101
 102         if (mctrl & TIOCM_DTR)
 103                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 0);
 104         else
 105                 locomo_gpio_write(&collie_locomo_device.dev, LOCOMO_GPIO_DTR, 1);
 106 }
 107
 108 static u_int collie_uart_get_mctrl(struct uart_port *port)
 109 {
 110         int ret = TIOCM_CD;
 111         unsigned int r;
 112
 113         r = locomo_gpio_read_output(&collie_locomo_device.dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
 114         if (r == -ENODEV)
 115                 return ret;
 116         if (r & LOCOMO_GPIO_CTS)
 117                 ret |= TIOCM_CTS;
 118         if (r & LOCOMO_GPIO_DSR)
 119                 ret |= TIOCM_DSR;
 120
 121         return ret;
 122 }
 123
 124 static struct sa1100_port_fns collie_port_fns __initdata = {
 125         .set_mctrl      = collie_uart_set_mctrl,
 126         .get_mctrl      = collie_uart_get_mctrl,
 127 };
 128
 129 static int collie_uart_probe(struct locomo_dev *dev)
 130 {
 131         return 0;
 132 }
 133
 134 static int collie_uart_remove(struct locomo_dev *dev)
 135 {
 136         return 0;
 137 }
 138
 139 static struct locomo_driver collie_uart_driver = {
 140         .drv = {
 141                 .name = "collie_uart",
 142         },
 143         .devid  = LOCOMO_DEVID_UART,
 144         .probe  = collie_uart_probe,
 145         .remove = collie_uart_remove,
 146 };
 147
 148 static int __init collie_uart_init(void) {
 149         return locomo_driver_register(&collie_uart_driver);
 150 }
 151 device_initcall(collie_uart_init);
 152
 153 #endif
 154
 155
 156 static struct resource locomo_resources[] = {
 157         [0] = {
 158                 .start          = 0x40000000,
 159                 .end            = 0x40001fff,
 160                 .flags          = IORESOURCE_MEM,
 161         },
 162         [1] = {
 163                 .start          = IRQ_GPIO25,
 164                 .end            = IRQ_GPIO25,
 165                 .flags          = IORESOURCE_IRQ,
 166         },
 167 };
 168
 169 struct platform_device collie_locomo_device = {
 170         .name           = "locomo",
 171         .id             = 0,
 172         .num_resources  = ARRAY_SIZE(locomo_resources),
 173         .resource       = locomo_resources,
 174 };
 175
 176 static struct platform_device *devices[] __initdata = {
 177         &collie_locomo_device,
 178         &colliescoop_device,
 179 };
 180
 181 static struct mtd_partition collie_partitions[] = {
 182         {
 183                 .name           = "bootloader",
 184                 .offset         = 0,
 185                 .size           = 0x000C0000,
 186                 .mask_flags     = MTD_WRITEABLE
 187         }, {
 188                 .name           = "kernel",
 189                 .offset         = MTDPART_OFS_APPEND,
 190                 .size           = 0x00100000,
 191         }, {
 192                 .name           = "rootfs",
 193                 .offset         = MTDPART_OFS_APPEND,
 194                 .size           = 0x00e20000,
 195         }
 196 };
 197
 198 static void collie_set_vpp(int vpp)
 199 {
 200         write_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR) | COLLIE_SCP_VPEN);
 201         if (vpp)
 202                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) | COLLIE_SCP_VPEN);
 203         else
 204                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
 205 }
 206
 207 static struct flash_platform_data collie_flash_data = {
 208         .map_name       = "cfi_probe",
 209         .set_vpp        = collie_set_vpp,
 210         .parts          = collie_partitions,
 211         .nr_parts       = ARRAY_SIZE(collie_partitions),
 212 };
 213
 214 static struct resource collie_flash_resources[] = {
 215         {
 216                 .start  = SA1100_CS0_PHYS,
 217                 .end    = SA1100_CS0_PHYS + SZ_32M - 1,
 218                 .flags  = IORESOURCE_MEM,
 219         }
 220 };
 221
 222 static void __init collie_init(void)
 223 {
 224         int ret = 0;
 225
 226         /* cpu initialize */
 227         GAFR = GPIO_SSP_TXD | GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK |
 228                 GPIO_MCP_CLK | GPIO_32_768kHz;
 229
 230         GPDR = GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 |
 231                 GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD |
 232                 GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK |
 233                 COLLIE_GPIO_UCB1x00_RESET | COLLIE_GPIO_nMIC_ON |
 234                 COLLIE_GPIO_nREMOCON_ON | GPIO_32_768kHz;
 235
 236         PPDR = PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 |
 237                 PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS |
 238                 PPC_TXD1 | PPC_TXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM;
 239
 240         PWER = COLLIE_GPIO_AC_IN | COLLIE_GPIO_CO | COLLIE_GPIO_ON_KEY |
 241                 COLLIE_GPIO_WAKEUP | COLLIE_GPIO_nREMOCON_INT | PWER_RTC;
 242
 243         PGSR = COLLIE_GPIO_nREMOCON_ON;
 244
 245         PSDR = PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4;
 246
 247         PCFR = PCFR_OPDE;
 248
 249
 250         platform_scoop_config = &collie_pcmcia_config;
 251
 252         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 253         if (ret) {
 254                 printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
 255         }
 256
 257         sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
 258                               ARRAY_SIZE(collie_flash_resources));
 259         sa11x0_set_mcp_data(&collie_mcp_data);
 260
 261         sharpsl_save_param();
 262 }
 263
 264 static struct map_desc collie_io_desc[] __initdata = {
 265         {       /* 32M main flash (cs0) */
 266                 .virtual        = 0xe8000000,
 267                 .pfn            = __phys_to_pfn(0x00000000),
 268                 .length         = 0x02000000,
 269                 .type           = MT_DEVICE
 270         }, {    /* 32M boot flash (cs1) */
 271                 .virtual        = 0xea000000,
 272                 .pfn            = __phys_to_pfn(0x08000000),
 273                 .length         = 0x02000000,
 274                 .type           = MT_DEVICE
 275         }
 276 };
 277
 278 static void __init collie_map_io(void)
 279 {
 280         sa1100_map_io();
 281         iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
 282
 283 #ifdef CONFIG_SHARP_LOCOMO
 284         sa1100_register_uart_fns(&collie_port_fns);
 285 #endif
 286         sa1100_register_uart(0, 3);
 287         sa1100_register_uart(1, 1);
 288 }
 289
 290 MACHINE_START(COLLIE, "Sharp-Collie")
 291         .phys_io        = 0x80000000,
 292         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 293         .map_io         = collie_map_io,
 294         .init_irq       = sa1100_init_irq,
 295         .timer          = &sa1100_timer,
 296         .init_machine   = collie_init,
 297 MACHINE_END