arch/arm/mach-pxa/cm-x270.c

   1 /*
   2  * linux/arch/arm/mach-pxa/cm-x270.c
   3  *
   4  * Copyright (C) 2007, 2008 CompuLab, Ltd.
   5  * Mike Rapoport <mike@compulab.co.il>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/platform_device.h>
  13 #include <linux/irq.h>
  14 #include <linux/gpio.h>
  15 #include <linux/delay.h>
  16
  17 #include <linux/rtc-v3020.h>
  18 #include <video/mbxfb.h>
  19
  20 #include <linux/spi/spi.h>
  21 #include <linux/spi/pxa2xx_spi.h>
  22 #include <linux/spi/libertas_spi.h>
  23
  24 #include <mach/pxa27x.h>
  25 #include <mach/ohci.h>
  26 #include <mach/mmc.h>
  27
  28 #include "generic.h"
  29
  30 /* physical address if local-bus attached devices */
  31 #define RTC_PHYS_BASE           (PXA_CS1_PHYS + (5 << 22))
  32
  33 /* GPIO IRQ usage */
  34 #define GPIO83_MMC_IRQ          (83)
  35
  36 #define CMX270_MMC_IRQ          IRQ_GPIO(GPIO83_MMC_IRQ)
  37
  38 /* MMC power enable */
  39 #define GPIO105_MMC_POWER       (105)
  40
  41 /* WLAN GPIOS */
  42 #define GPIO19_WLAN_STRAP       (19)
  43 #define GPIO102_WLAN_RST        (102)
  44
  45 static unsigned long cmx270_pin_config[] = {
  46         /* AC'97 */
  47         GPIO28_AC97_BITCLK,
  48         GPIO29_AC97_SDATA_IN_0,
  49         GPIO30_AC97_SDATA_OUT,
  50         GPIO31_AC97_SYNC,
  51         GPIO98_AC97_SYSCLK,
  52         GPIO113_AC97_nRESET,
  53
  54         /* BTUART */
  55         GPIO42_BTUART_RXD,
  56         GPIO43_BTUART_TXD,
  57         GPIO44_BTUART_CTS,
  58         GPIO45_BTUART_RTS,
  59
  60         /* STUART */
  61         GPIO46_STUART_RXD,
  62         GPIO47_STUART_TXD,
  63
  64         /* MCI controller */
  65         GPIO32_MMC_CLK,
  66         GPIO112_MMC_CMD,
  67         GPIO92_MMC_DAT_0,
  68         GPIO109_MMC_DAT_1,
  69         GPIO110_MMC_DAT_2,
  70         GPIO111_MMC_DAT_3,
  71
  72         /* LCD */
  73         GPIOxx_LCD_TFT_16BPP,
  74
  75         /* I2C */
  76         GPIO117_I2C_SCL,
  77         GPIO118_I2C_SDA,
  78
  79         /* SSP1 */
  80         GPIO23_SSP1_SCLK,
  81         GPIO24_SSP1_SFRM,
  82         GPIO25_SSP1_TXD,
  83         GPIO26_SSP1_RXD,
  84
  85         /* SSP2 */
  86         GPIO19_GPIO,    /* SSP2 clock is used as GPIO for Libertas pin-strap */
  87         GPIO14_GPIO,
  88         GPIO87_SSP2_TXD,
  89         GPIO88_SSP2_RXD,
  90
  91         /* PC Card */
  92         GPIO48_nPOE,
  93         GPIO49_nPWE,
  94         GPIO50_nPIOR,
  95         GPIO51_nPIOW,
  96         GPIO85_nPCE_1,
  97         GPIO54_nPCE_2,
  98         GPIO55_nPREG,
  99         GPIO56_nPWAIT,
 100         GPIO57_nIOIS16,
 101
 102         /* SDRAM and local bus */
 103         GPIO15_nCS_1,
 104         GPIO78_nCS_2,
 105         GPIO79_nCS_3,
 106         GPIO80_nCS_4,
 107         GPIO33_nCS_5,
 108         GPIO49_nPWE,
 109         GPIO18_RDY,
 110
 111         /* GPIO */
 112         GPIO0_GPIO      | WAKEUP_ON_EDGE_BOTH,
 113         GPIO105_GPIO    | MFP_LPM_DRIVE_HIGH,   /* MMC/SD power */
 114         GPIO53_GPIO,                            /* PC card reset */
 115         GPIO102_GPIO,                           /* WLAN reset */
 116
 117         /* NAND controls */
 118         GPIO11_GPIO     | MFP_LPM_DRIVE_HIGH,   /* NAND CE# */
 119         GPIO89_GPIO,                            /* NAND Ready/Busy */
 120
 121         /* interrupts */
 122         GPIO10_GPIO,    /* DM9000 interrupt */
 123         GPIO83_GPIO,    /* MMC card detect */
 124         GPIO95_GPIO,    /* WLAN interrupt */
 125 };
 126
 127 /* V3020 RTC */
 128 #if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
 129 static struct resource cmx270_v3020_resource[] = {
 130         [0] = {
 131                 .start = RTC_PHYS_BASE,
 132                 .end   = RTC_PHYS_BASE + 4,
 133                 .flags = IORESOURCE_MEM,
 134         },
 135 };
 136
 137 struct v3020_platform_data cmx270_v3020_pdata = {
 138         .leftshift = 16,
 139 };
 140
 141 static struct platform_device cmx270_rtc_device = {
 142         .name           = "v3020",
 143         .num_resources  = ARRAY_SIZE(cmx270_v3020_resource),
 144         .resource       = cmx270_v3020_resource,
 145         .id             = -1,
 146         .dev            = {
 147                 .platform_data = &cmx270_v3020_pdata,
 148         }
 149 };
 150
 151 static void __init cmx270_init_rtc(void)
 152 {
 153         platform_device_register(&cmx270_rtc_device);
 154 }
 155 #else
 156 static inline void cmx270_init_rtc(void) {}
 157 #endif
 158
 159 /* 2700G graphics */
 160 #if defined(CONFIG_FB_MBX) || defined(CONFIG_FB_MBX_MODULE)
 161 static u64 fb_dma_mask = ~(u64)0;
 162
 163 static struct resource cmx270_2700G_resource[] = {
 164         /* frame buffer memory including ODFB and External SDRAM */
 165         [0] = {
 166                 .start = PXA_CS2_PHYS,
 167                 .end   = PXA_CS2_PHYS + 0x01ffffff,
 168                 .flags = IORESOURCE_MEM,
 169         },
 170         /* Marathon registers */
 171         [1] = {
 172                 .start = PXA_CS2_PHYS + 0x03fe0000,
 173                 .end   = PXA_CS2_PHYS + 0x03ffffff,
 174                 .flags = IORESOURCE_MEM,
 175         },
 176 };
 177
 178 static unsigned long cmx270_marathon_on[] = {
 179         GPIO58_GPIO,
 180         GPIO59_GPIO,
 181         GPIO60_GPIO,
 182         GPIO61_GPIO,
 183         GPIO62_GPIO,
 184         GPIO63_GPIO,
 185         GPIO64_GPIO,
 186         GPIO65_GPIO,
 187         GPIO66_GPIO,
 188         GPIO67_GPIO,
 189         GPIO68_GPIO,
 190         GPIO69_GPIO,
 191         GPIO70_GPIO,
 192         GPIO71_GPIO,
 193         GPIO72_GPIO,
 194         GPIO73_GPIO,
 195         GPIO74_GPIO,
 196         GPIO75_GPIO,
 197         GPIO76_GPIO,
 198         GPIO77_GPIO,
 199 };
 200
 201 static unsigned long cmx270_marathon_off[] = {
 202         GPIOxx_LCD_TFT_16BPP,
 203 };
 204
 205 static int cmx270_marathon_probe(struct fb_info *fb)
 206 {
 207         int gpio, err;
 208
 209         for (gpio = 58; gpio <= 77; gpio++) {
 210                 err = gpio_request(gpio, "LCD");
 211                 if (err)
 212                         return err;
 213                 gpio_direction_input(gpio);
 214         }
 215
 216         pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_marathon_on));
 217         return 0;
 218 }
 219
 220 static int cmx270_marathon_remove(struct fb_info *fb)
 221 {
 222         int gpio;
 223
 224         pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_marathon_off));
 225
 226         for (gpio = 58; gpio <= 77; gpio++)
 227                 gpio_free(gpio);
 228
 229         return 0;
 230 }
 231
 232 static struct mbxfb_platform_data cmx270_2700G_data = {
 233         .xres = {
 234                 .min = 240,
 235                 .max = 1200,
 236                 .defval = 640,
 237         },
 238         .yres = {
 239                 .min = 240,
 240                 .max = 1200,
 241                 .defval = 480,
 242         },
 243         .bpp = {
 244                 .min = 16,
 245                 .max = 32,
 246                 .defval = 16,
 247         },
 248         .memsize = 8*1024*1024,
 249         .probe = cmx270_marathon_probe,
 250         .remove = cmx270_marathon_remove,
 251 };
 252
 253 static struct platform_device cmx270_2700G = {
 254         .name           = "mbx-fb",
 255         .dev            = {
 256                 .platform_data  = &cmx270_2700G_data,
 257                 .dma_mask       = &fb_dma_mask,
 258                 .coherent_dma_mask = 0xffffffff,
 259         },
 260         .num_resources  = ARRAY_SIZE(cmx270_2700G_resource),
 261         .resource       = cmx270_2700G_resource,
 262         .id             = -1,
 263 };
 264
 265 static void __init cmx270_init_2700G(void)
 266 {
 267         platform_device_register(&cmx270_2700G);
 268 }
 269 #else
 270 static inline void cmx270_init_2700G(void) {}
 271 #endif
 272
 273 /* PXA27x OHCI controller setup */
 274 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 275 static struct pxaohci_platform_data cmx270_ohci_platform_data = {
 276         .port_mode      = PMM_PERPORT_MODE,
 277         .flags          = ENABLE_PORT1 | ENABLE_PORT2 | POWER_CONTROL_LOW,
 278 };
 279
 280 static void __init cmx270_init_ohci(void)
 281 {
 282         pxa_set_ohci_info(&cmx270_ohci_platform_data);
 283 }
 284 #else
 285 static inline void cmx270_init_ohci(void) {}
 286 #endif
 287
 288 #if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
 289 static struct pxamci_platform_data cmx270_mci_platform_data = {
 290         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 291         .gpio_card_detect       = GPIO83_MMC_IRQ,
 292         .gpio_card_ro           = -1,
 293         .gpio_power             = GPIO105_MMC_POWER,
 294         .gpio_power_invert      = 1,
 295 };
 296
 297 static void __init cmx270_init_mmc(void)
 298 {
 299         pxa_set_mci_info(&cmx270_mci_platform_data);
 300 }
 301 #else
 302 static inline void cmx270_init_mmc(void) {}
 303 #endif
 304
 305 #if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
 306 static struct pxa2xx_spi_master cm_x270_spi_info = {
 307         .num_chipselect = 1,
 308         .enable_dma     = 1,
 309 };
 310
 311 static struct pxa2xx_spi_chip cm_x270_libertas_chip = {
 312         .rx_threshold   = 1,
 313         .tx_threshold   = 1,
 314         .timeout        = 1000,
 315         .gpio_cs        = 14,
 316 };
 317
 318 static unsigned long cm_x270_libertas_pin_config[] = {
 319         /* SSP2 */
 320         GPIO19_SSP2_SCLK,
 321         GPIO14_GPIO,
 322         GPIO87_SSP2_TXD,
 323         GPIO88_SSP2_RXD,
 324
 325 };
 326
 327 static int cm_x270_libertas_setup(struct spi_device *spi)
 328 {
 329         int err = gpio_request(GPIO19_WLAN_STRAP, "WLAN STRAP");
 330         if (err)
 331                 return err;
 332
 333         err = gpio_request(GPIO102_WLAN_RST, "WLAN RST");
 334         if (err)
 335                 goto err_free_strap;
 336
 337         err = gpio_direction_output(GPIO102_WLAN_RST, 0);
 338         if (err)
 339                 goto err_free_strap;
 340         msleep(100);
 341
 342         err = gpio_direction_output(GPIO19_WLAN_STRAP, 1);
 343         if (err)
 344                 goto err_free_strap;
 345         msleep(100);
 346
 347         pxa2xx_mfp_config(ARRAY_AND_SIZE(cm_x270_libertas_pin_config));
 348
 349         gpio_set_value(GPIO102_WLAN_RST, 1);
 350         msleep(100);
 351
 352         spi->bits_per_word = 16;
 353         spi_setup(spi);
 354
 355         return 0;
 356
 357 err_free_strap:
 358         gpio_free(GPIO19_WLAN_STRAP);
 359
 360         return err;
 361 }
 362
 363 static int cm_x270_libertas_teardown(struct spi_device *spi)
 364 {
 365         gpio_set_value(GPIO102_WLAN_RST, 0);
 366         gpio_free(GPIO102_WLAN_RST);
 367         gpio_free(GPIO19_WLAN_STRAP);
 368
 369         return 0;
 370 }
 371
 372 struct libertas_spi_platform_data cm_x270_libertas_pdata = {
 373         .use_dummy_writes       = 1,
 374         .setup                  = cm_x270_libertas_setup,
 375         .teardown               = cm_x270_libertas_teardown,
 376 };
 377
 378 static struct spi_board_info cm_x270_spi_devices[] __initdata = {
 379         {
 380                 .modalias               = "libertas_spi",
 381                 .max_speed_hz           = 13000000,
 382                 .bus_num                = 2,
 383                 .irq                    = gpio_to_irq(95),
 384                 .chip_select            = 0,
 385                 .controller_data        = &cm_x270_libertas_chip,
 386                 .platform_data          = &cm_x270_libertas_pdata,
 387         },
 388 };
 389
 390 static void __init cmx270_init_spi(void)
 391 {
 392         pxa2xx_set_spi_info(2, &cm_x270_spi_info);
 393         spi_register_board_info(ARRAY_AND_SIZE(cm_x270_spi_devices));
 394 }
 395 #else
 396 static inline void cmx270_init_spi(void) {}
 397 #endif
 398
 399 void __init cmx270_init(void)
 400 {
 401         pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_pin_config));
 402
 403 #ifdef CONFIG_PM
 404         pxa27x_set_pwrmode(PWRMODE_DEEPSLEEP);
 405 #endif
 406
 407         cmx270_init_rtc();
 408         cmx270_init_mmc();
 409         cmx270_init_ohci();
 410         cmx270_init_2700G();
 411         cmx270_init_spi();
 412 }