arch/m68k/platform/527x/config.c

   1 /***************************************************************************/
   2
   3 /*
   4  *      linux/arch/m68knommu/platform/527x/config.c
   5  *
   6  *      Sub-architcture dependent initialization code for the Freescale
   7  *      5270/5271 CPUs.
   8  *
   9  *      Copyright (C) 1999-2004, Greg Ungerer (gerg@snapgear.com)
  10  *      Copyright (C) 2001-2004, SnapGear Inc. (www.snapgear.com)
  11  */
  12
  13 /***************************************************************************/
  14
  15 #include <linux/kernel.h>
  16 #include <linux/param.h>
  17 #include <linux/init.h>
  18 #include <linux/io.h>
  19 #include <linux/spi/spi.h>
  20 #include <linux/gpio.h>
  21 #include <asm/machdep.h>
  22 #include <asm/coldfire.h>
  23 #include <asm/mcfsim.h>
  24 #include <asm/mcfuart.h>
  25 #include <asm/mcfqspi.h>
  26
  27 /***************************************************************************/
  28
  29 static struct mcf_platform_uart m527x_uart_platform[] = {
  30         {
  31                 .mapbase        = MCFUART_BASE1,
  32                 .irq            = MCFINT_VECBASE + MCFINT_UART0,
  33         },
  34         {
  35                 .mapbase        = MCFUART_BASE2,
  36                 .irq            = MCFINT_VECBASE + MCFINT_UART1,
  37         },
  38         {
  39                 .mapbase        = MCFUART_BASE3,
  40                 .irq            = MCFINT_VECBASE + MCFINT_UART2,
  41         },
  42         { },
  43 };
  44
  45 static struct platform_device m527x_uart = {
  46         .name                   = "mcfuart",
  47         .id                     = 0,
  48         .dev.platform_data      = m527x_uart_platform,
  49 };
  50
  51 static struct resource m527x_fec0_resources[] = {
  52         {
  53                 .start          = MCFFEC_BASE0,
  54                 .end            = MCFFEC_BASE0 + MCFFEC_SIZE0 - 1,
  55                 .flags          = IORESOURCE_MEM,
  56         },
  57         {
  58                 .start          = 64 + 23,
  59                 .end            = 64 + 23,
  60                 .flags          = IORESOURCE_IRQ,
  61         },
  62         {
  63                 .start          = 64 + 27,
  64                 .end            = 64 + 27,
  65                 .flags          = IORESOURCE_IRQ,
  66         },
  67         {
  68                 .start          = 64 + 29,
  69                 .end            = 64 + 29,
  70                 .flags          = IORESOURCE_IRQ,
  71         },
  72 };
  73
  74 static struct resource m527x_fec1_resources[] = {
  75         {
  76                 .start          = MCFFEC_BASE1,
  77                 .end            = MCFFEC_BASE1 + MCFFEC_SIZE1 - 1,
  78                 .flags          = IORESOURCE_MEM,
  79         },
  80         {
  81                 .start          = 128 + 23,
  82                 .end            = 128 + 23,
  83                 .flags          = IORESOURCE_IRQ,
  84         },
  85         {
  86                 .start          = 128 + 27,
  87                 .end            = 128 + 27,
  88                 .flags          = IORESOURCE_IRQ,
  89         },
  90         {
  91                 .start          = 128 + 29,
  92                 .end            = 128 + 29,
  93                 .flags          = IORESOURCE_IRQ,
  94         },
  95 };
  96
  97 static struct platform_device m527x_fec[] = {
  98         {
  99                 .name           = "fec",
 100                 .id             = 0,
 101                 .num_resources  = ARRAY_SIZE(m527x_fec0_resources),
 102                 .resource       = m527x_fec0_resources,
 103         },
 104         {
 105                 .name           = "fec",
 106                 .id             = 1,
 107                 .num_resources  = ARRAY_SIZE(m527x_fec1_resources),
 108                 .resource       = m527x_fec1_resources,
 109         },
 110 };
 111
 112 #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
 113 static struct resource m527x_qspi_resources[] = {
 114         {
 115                 .start          = MCFQSPI_IOBASE,
 116                 .end            = MCFQSPI_IOBASE + MCFQSPI_IOSIZE - 1,
 117                 .flags          = IORESOURCE_MEM,
 118         },
 119         {
 120                 .start          = MCFINT_VECBASE + MCFINT_QSPI,
 121                 .end            = MCFINT_VECBASE + MCFINT_QSPI,
 122                 .flags          = IORESOURCE_IRQ,
 123         },
 124 };
 125
 126 #if defined(CONFIG_M5271)
 127 #define MCFQSPI_CS0    91
 128 #define MCFQSPI_CS1    92
 129 #define MCFQSPI_CS2    99
 130 #define MCFQSPI_CS3    103
 131 #elif defined(CONFIG_M5275)
 132 #define MCFQSPI_CS0    59
 133 #define MCFQSPI_CS1    60
 134 #define MCFQSPI_CS2    61
 135 #define MCFQSPI_CS3    62
 136 #endif
 137
 138 static int m527x_cs_setup(struct mcfqspi_cs_control *cs_control)
 139 {
 140         int status;
 141
 142         status = gpio_request(MCFQSPI_CS0, "MCFQSPI_CS0");
 143         if (status) {
 144                 pr_debug("gpio_request for MCFQSPI_CS0 failed\n");
 145                 goto fail0;
 146         }
 147         status = gpio_direction_output(MCFQSPI_CS0, 1);
 148         if (status) {
 149                 pr_debug("gpio_direction_output for MCFQSPI_CS0 failed\n");
 150                 goto fail1;
 151         }
 152
 153         status = gpio_request(MCFQSPI_CS1, "MCFQSPI_CS1");
 154         if (status) {
 155                 pr_debug("gpio_request for MCFQSPI_CS1 failed\n");
 156                 goto fail1;
 157         }
 158         status = gpio_direction_output(MCFQSPI_CS1, 1);
 159         if (status) {
 160                 pr_debug("gpio_direction_output for MCFQSPI_CS1 failed\n");
 161                 goto fail2;
 162         }
 163
 164         status = gpio_request(MCFQSPI_CS2, "MCFQSPI_CS2");
 165         if (status) {
 166                 pr_debug("gpio_request for MCFQSPI_CS2 failed\n");
 167                 goto fail2;
 168         }
 169         status = gpio_direction_output(MCFQSPI_CS2, 1);
 170         if (status) {
 171                 pr_debug("gpio_direction_output for MCFQSPI_CS2 failed\n");
 172                 goto fail3;
 173         }
 174
 175         status = gpio_request(MCFQSPI_CS3, "MCFQSPI_CS3");
 176         if (status) {
 177                 pr_debug("gpio_request for MCFQSPI_CS3 failed\n");
 178                 goto fail3;
 179         }
 180         status = gpio_direction_output(MCFQSPI_CS3, 1);
 181         if (status) {
 182                 pr_debug("gpio_direction_output for MCFQSPI_CS3 failed\n");
 183                 goto fail4;
 184         }
 185
 186         return 0;
 187
 188 fail4:
 189         gpio_free(MCFQSPI_CS3);
 190 fail3:
 191         gpio_free(MCFQSPI_CS2);
 192 fail2:
 193         gpio_free(MCFQSPI_CS1);
 194 fail1:
 195         gpio_free(MCFQSPI_CS0);
 196 fail0:
 197         return status;
 198 }
 199
 200 static void m527x_cs_teardown(struct mcfqspi_cs_control *cs_control)
 201 {
 202         gpio_free(MCFQSPI_CS3);
 203         gpio_free(MCFQSPI_CS2);
 204         gpio_free(MCFQSPI_CS1);
 205         gpio_free(MCFQSPI_CS0);
 206 }
 207
 208 static void m527x_cs_select(struct mcfqspi_cs_control *cs_control,
 209                             u8 chip_select, bool cs_high)
 210 {
 211         switch (chip_select) {
 212         case 0:
 213                 gpio_set_value(MCFQSPI_CS0, cs_high);
 214                 break;
 215         case 1:
 216                 gpio_set_value(MCFQSPI_CS1, cs_high);
 217                 break;
 218         case 2:
 219                 gpio_set_value(MCFQSPI_CS2, cs_high);
 220                 break;
 221         case 3:
 222                 gpio_set_value(MCFQSPI_CS3, cs_high);
 223                 break;
 224         }
 225 }
 226
 227 static void m527x_cs_deselect(struct mcfqspi_cs_control *cs_control,
 228                               u8 chip_select, bool cs_high)
 229 {
 230         switch (chip_select) {
 231         case 0:
 232                 gpio_set_value(MCFQSPI_CS0, !cs_high);
 233                 break;
 234         case 1:
 235                 gpio_set_value(MCFQSPI_CS1, !cs_high);
 236                 break;
 237         case 2:
 238                 gpio_set_value(MCFQSPI_CS2, !cs_high);
 239                 break;
 240         case 3:
 241                 gpio_set_value(MCFQSPI_CS3, !cs_high);
 242                 break;
 243         }
 244 }
 245
 246 static struct mcfqspi_cs_control m527x_cs_control = {
 247         .setup                  = m527x_cs_setup,
 248         .teardown               = m527x_cs_teardown,
 249         .select                 = m527x_cs_select,
 250         .deselect               = m527x_cs_deselect,
 251 };
 252
 253 static struct mcfqspi_platform_data m527x_qspi_data = {
 254         .bus_num                = 0,
 255         .num_chipselect         = 4,
 256         .cs_control             = &m527x_cs_control,
 257 };
 258
 259 static struct platform_device m527x_qspi = {
 260         .name                   = "mcfqspi",
 261         .id                     = 0,
 262         .num_resources          = ARRAY_SIZE(m527x_qspi_resources),
 263         .resource               = m527x_qspi_resources,
 264         .dev.platform_data      = &m527x_qspi_data,
 265 };
 266
 267 static void __init m527x_qspi_init(void)
 268 {
 269 #if defined(CONFIG_M5271)
 270         u16 par;
 271
 272         /* setup QSPS pins for QSPI with gpio CS control */
 273         writeb(0x1f, MCFGPIO_PAR_QSPI);
 274         /* and CS2 & CS3 as gpio */
 275         par = readw(MCFGPIO_PAR_TIMER);
 276         par &= 0x3f3f;
 277         writew(par, MCFGPIO_PAR_TIMER);
 278 #elif defined(CONFIG_M5275)
 279         /* setup QSPS pins for QSPI with gpio CS control */
 280         writew(0x003e, MCFGPIO_PAR_QSPI);
 281 #endif
 282 }
 283 #endif /* defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE) */
 284
 285 static struct platform_device *m527x_devices[] __initdata = {
 286         &m527x_uart,
 287         &m527x_fec[0],
 288 #ifdef CONFIG_FEC2
 289         &m527x_fec[1],
 290 #endif
 291 #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
 292         &m527x_qspi,
 293 #endif
 294 };
 295
 296 /***************************************************************************/
 297
 298 static void __init m527x_uart_init_line(int line, int irq)
 299 {
 300         u16 sepmask;
 301
 302         if ((line < 0) || (line > 2))
 303                 return;
 304
 305         /*
 306          * External Pin Mask Setting & Enable External Pin for Interface
 307          */
 308         sepmask = readw(MCF_IPSBAR + MCF_GPIO_PAR_UART);
 309         if (line == 0)
 310                 sepmask |= UART0_ENABLE_MASK;
 311         else if (line == 1)
 312                 sepmask |= UART1_ENABLE_MASK;
 313         else if (line == 2)
 314                 sepmask |= UART2_ENABLE_MASK;
 315         writew(sepmask, MCF_IPSBAR + MCF_GPIO_PAR_UART);
 316 }
 317
 318 static void __init m527x_uarts_init(void)
 319 {
 320         const int nrlines = ARRAY_SIZE(m527x_uart_platform);
 321         int line;
 322
 323         for (line = 0; (line < nrlines); line++)
 324                 m527x_uart_init_line(line, m527x_uart_platform[line].irq);
 325 }
 326
 327 /***************************************************************************/
 328
 329 static void __init m527x_fec_init(void)
 330 {
 331         u16 par;
 332         u8 v;
 333
 334         /* Set multi-function pins to ethernet mode for fec0 */
 335 #if defined(CONFIG_M5271)
 336         v = readb(MCF_IPSBAR + 0x100047);
 337         writeb(v | 0xf0, MCF_IPSBAR + 0x100047);
 338 #else
 339         par = readw(MCF_IPSBAR + 0x100082);
 340         writew(par | 0xf00, MCF_IPSBAR + 0x100082);
 341         v = readb(MCF_IPSBAR + 0x100078);
 342         writeb(v | 0xc0, MCF_IPSBAR + 0x100078);
 343 #endif
 344
 345 #ifdef CONFIG_FEC2
 346         /* Set multi-function pins to ethernet mode for fec1 */
 347         par = readw(MCF_IPSBAR + 0x100082);
 348         writew(par | 0xa0, MCF_IPSBAR + 0x100082);
 349         v = readb(MCF_IPSBAR + 0x100079);
 350         writeb(v | 0xc0, MCF_IPSBAR + 0x100079);
 351 #endif
 352 }
 353
 354 /***************************************************************************/
 355
 356 static void m527x_cpu_reset(void)
 357 {
 358         local_irq_disable();
 359         __raw_writeb(MCF_RCR_SWRESET, MCF_IPSBAR + MCF_RCR);
 360 }
 361
 362 /***************************************************************************/
 363
 364 void __init config_BSP(char *commandp, int size)
 365 {
 366         mach_reset = m527x_cpu_reset;
 367         m527x_uarts_init();
 368         m527x_fec_init();
 369 #if defined(CONFIG_SPI_COLDFIRE_QSPI) || defined(CONFIG_SPI_COLDFIRE_QSPI_MODULE)
 370         m527x_qspi_init();
 371 #endif
 372 }
 373
 374 /***************************************************************************/
 375
 376 static int __init init_BSP(void)
 377 {
 378         platform_add_devices(m527x_devices, ARRAY_SIZE(m527x_devices));
 379         return 0;
 380 }
 381
 382 arch_initcall(init_BSP);
 383
 384 /***************************************************************************/