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 static struct locomo_dev *uart_dev = NULL;
  95
  96 static void collie_uart_set_mctrl(struct uart_port *port, u_int mctrl)
  97 {
  98         if (!uart_dev) return;
  99
 100         if (mctrl & TIOCM_RTS)
 101                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_RTS, 0);
 102         else
 103                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_RTS, 1);
 104
 105         if (mctrl & TIOCM_DTR)
 106                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_DTR, 0);
 107         else
 108                 locomo_gpio_write(uart_dev, LOCOMO_GPIO_DTR, 1);
 109 }
 110
 111 static u_int collie_uart_get_mctrl(struct uart_port *port)
 112 {
 113         int ret = TIOCM_CD;
 114         unsigned int r;
 115         if (!uart_dev) return ret;
 116
 117         r = locomo_gpio_read_output(uart_dev, LOCOMO_GPIO_CTS & LOCOMO_GPIO_DSR);
 118         if (r & LOCOMO_GPIO_CTS)
 119                 ret |= TIOCM_CTS;
 120         if (r & LOCOMO_GPIO_DSR)
 121                 ret |= TIOCM_DSR;
 122
 123         return ret;
 124 }
 125
 126 static struct sa1100_port_fns collie_port_fns __initdata = {
 127         .set_mctrl      = collie_uart_set_mctrl,
 128         .get_mctrl      = collie_uart_get_mctrl,
 129 };
 130
 131 static int collie_uart_probe(struct locomo_dev *dev)
 132 {
 133         uart_dev = dev;
 134         return 0;
 135 }
 136
 137 static int collie_uart_remove(struct locomo_dev *dev)
 138 {
 139         uart_dev = NULL;
 140         return 0;
 141 }
 142
 143 static struct locomo_driver collie_uart_driver = {
 144         .drv = {
 145                 .name = "collie_uart",
 146         },
 147         .devid  = LOCOMO_DEVID_UART,
 148         .probe  = collie_uart_probe,
 149         .remove = collie_uart_remove,
 150 };
 151
 152 static int __init collie_uart_init(void) {
 153         return locomo_driver_register(&collie_uart_driver);
 154 }
 155 device_initcall(collie_uart_init);
 156
 157 #endif
 158
 159
 160 static struct resource locomo_resources[] = {
 161         [0] = {
 162                 .start          = 0x40000000,
 163                 .end            = 0x40001fff,
 164                 .flags          = IORESOURCE_MEM,
 165         },
 166         [1] = {
 167                 .start          = IRQ_GPIO25,
 168                 .end            = IRQ_GPIO25,
 169                 .flags          = IORESOURCE_IRQ,
 170         },
 171 };
 172
 173 static struct platform_device locomo_device = {
 174         .name           = "locomo",
 175         .id             = 0,
 176         .num_resources  = ARRAY_SIZE(locomo_resources),
 177         .resource       = locomo_resources,
 178 };
 179
 180 static struct platform_device *devices[] __initdata = {
 181         &locomo_device,
 182         &colliescoop_device,
 183 };
 184
 185 static struct mtd_partition collie_partitions[] = {
 186         {
 187                 .name           = "bootloader",
 188                 .offset         = 0,
 189                 .size           = 0x000C0000,
 190                 .mask_flags     = MTD_WRITEABLE
 191         }, {
 192                 .name           = "kernel",
 193                 .offset         = MTDPART_OFS_APPEND,
 194                 .size           = 0x00100000,
 195         }, {
 196                 .name           = "rootfs",
 197                 .offset         = MTDPART_OFS_APPEND,
 198                 .size           = 0x00e20000,
 199         }
 200 };
 201
 202 static void collie_set_vpp(int vpp)
 203 {
 204         write_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPCR) | COLLIE_SCP_VPEN);
 205         if (vpp)
 206                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) | COLLIE_SCP_VPEN);
 207         else
 208                 write_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR, read_scoop_reg(&colliescoop_device.dev, SCOOP_GPWR) & ~COLLIE_SCP_VPEN);
 209 }
 210
 211 static struct flash_platform_data collie_flash_data = {
 212         .map_name       = "cfi_probe",
 213         .set_vpp        = collie_set_vpp,
 214         .parts          = collie_partitions,
 215         .nr_parts       = ARRAY_SIZE(collie_partitions),
 216 };
 217
 218 static struct resource collie_flash_resources[] = {
 219         {
 220                 .start  = SA1100_CS0_PHYS,
 221                 .end    = SA1100_CS0_PHYS + SZ_32M - 1,
 222                 .flags  = IORESOURCE_MEM,
 223         }
 224 };
 225
 226 static void __init collie_init(void)
 227 {
 228         int ret = 0;
 229
 230         /* cpu initialize */
 231         GAFR = ( GPIO_SSP_TXD | \
 232                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SSP_CLK | GPIO_TIC_ACK | \
 233                  GPIO_32_768kHz );
 234
 235         GPDR = ( GPIO_LDD8 | GPIO_LDD9 | GPIO_LDD10 | GPIO_LDD11 | GPIO_LDD12 | \
 236                  GPIO_LDD13 | GPIO_LDD14 | GPIO_LDD15 | GPIO_SSP_TXD | \
 237                  GPIO_SSP_SCLK | GPIO_SSP_SFRM | GPIO_SDLC_SCLK | \
 238                  GPIO_SDLC_AAF | GPIO_UART_SCLK1 | GPIO_32_768kHz );
 239         GPLR = GPIO_GPIO18;
 240
 241         // PPC pin setting
 242         PPDR = ( PPC_LDD0 | PPC_LDD1 | PPC_LDD2 | PPC_LDD3 | PPC_LDD4 | PPC_LDD5 | \
 243                  PPC_LDD6 | PPC_LDD7 | PPC_L_PCLK | PPC_L_LCLK | PPC_L_FCLK | PPC_L_BIAS | \
 244                  PPC_TXD1 | PPC_TXD2 | PPC_RXD2 | PPC_TXD3 | PPC_TXD4 | PPC_SCLK | PPC_SFRM );
 245
 246         PSDR = ( PPC_RXD1 | PPC_RXD2 | PPC_RXD3 | PPC_RXD4 );
 247
 248         GAFR |= GPIO_32_768kHz;
 249         GPDR |= GPIO_32_768kHz;
 250         TUCR  = TUCR_32_768kHz;
 251
 252         platform_scoop_config = &collie_pcmcia_config;
 253
 254         ret = platform_add_devices(devices, ARRAY_SIZE(devices));
 255         if (ret) {
 256                 printk(KERN_WARNING "collie: Unable to register LoCoMo device\n");
 257         }
 258
 259         sa11x0_set_flash_data(&collie_flash_data, collie_flash_resources,
 260                               ARRAY_SIZE(collie_flash_resources));
 261         sa11x0_set_mcp_data(&collie_mcp_data);
 262
 263         sharpsl_save_param();
 264 }
 265
 266 static struct map_desc collie_io_desc[] __initdata = {
 267         {       /* 32M main flash (cs0) */
 268                 .virtual        = 0xe8000000,
 269                 .pfn            = __phys_to_pfn(0x00000000),
 270                 .length         = 0x02000000,
 271                 .type           = MT_DEVICE
 272         }, {    /* 32M boot flash (cs1) */
 273                 .virtual        = 0xea000000,
 274                 .pfn            = __phys_to_pfn(0x08000000),
 275                 .length         = 0x02000000,
 276                 .type           = MT_DEVICE
 277         }
 278 };
 279
 280 static void __init collie_map_io(void)
 281 {
 282         sa1100_map_io();
 283         iotable_init(collie_io_desc, ARRAY_SIZE(collie_io_desc));
 284
 285 #ifdef CONFIG_SHARP_LOCOMO
 286         sa1100_register_uart_fns(&collie_port_fns);
 287 #endif
 288         sa1100_register_uart(0, 3);
 289         sa1100_register_uart(1, 1);
 290 }
 291
 292 MACHINE_START(COLLIE, "Sharp-Collie")
 293         .phys_io        = 0x80000000,
 294         .io_pg_offst    = ((0xf8000000) >> 18) & 0xfffc,
 295         .map_io         = collie_map_io,
 296         .init_irq       = sa1100_init_irq,
 297         .timer          = &sa1100_timer,
 298         .init_machine   = collie_init,
 299 MACHINE_END