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/sysdev.h>
  14 #include <linux/irq.h>
  15 #include <linux/gpio.h>
  16 #include <linux/delay.h>
  17
  18 #include <linux/rtc-v3020.h>
  19 #include <video/mbxfb.h>
  20
  21 #include <linux/spi/spi.h>
  22 #include <linux/spi/pxa2xx_spi.h>
  23 #include <linux/spi/libertas_spi.h>
  24
  25 #include <mach/pxa27x.h>
  26 #include <mach/ohci.h>
  27 #include <mach/mmc.h>
  28
  29 #include "generic.h"
  30
  31 /* physical address if local-bus attached devices */
  32 #define RTC_PHYS_BASE           (PXA_CS1_PHYS + (5 << 22))
  33
  34 /* GPIO IRQ usage */
  35 #define GPIO83_MMC_IRQ          (83)
  36
  37 #define CMX270_MMC_IRQ          IRQ_GPIO(GPIO83_MMC_IRQ)
  38
  39 /* MMC power enable */
  40 #define GPIO105_MMC_POWER       (105)
  41
  42 /* WLAN GPIOS */
  43 #define GPIO19_WLAN_STRAP       (19)
  44 #define GPIO102_WLAN_RST        (102)
  45
  46 static unsigned long cmx270_pin_config[] = {
  47         /* AC'97 */
  48         GPIO28_AC97_BITCLK,
  49         GPIO29_AC97_SDATA_IN_0,
  50         GPIO30_AC97_SDATA_OUT,
  51         GPIO31_AC97_SYNC,
  52         GPIO98_AC97_SYSCLK,
  53         GPIO113_AC97_nRESET,
  54
  55         /* BTUART */
  56         GPIO42_BTUART_RXD,
  57         GPIO43_BTUART_TXD,
  58         GPIO44_BTUART_CTS,
  59         GPIO45_BTUART_RTS,
  60
  61         /* STUART */
  62         GPIO46_STUART_RXD,
  63         GPIO47_STUART_TXD,
  64
  65         /* MCI controller */
  66         GPIO32_MMC_CLK,
  67         GPIO112_MMC_CMD,
  68         GPIO92_MMC_DAT_0,
  69         GPIO109_MMC_DAT_1,
  70         GPIO110_MMC_DAT_2,
  71         GPIO111_MMC_DAT_3,
  72
  73         /* LCD */
  74         GPIOxx_LCD_TFT_16BPP,
  75
  76         /* I2C */
  77         GPIO117_I2C_SCL,
  78         GPIO118_I2C_SDA,
  79
  80         /* SSP1 */
  81         GPIO23_SSP1_SCLK,
  82         GPIO24_SSP1_SFRM,
  83         GPIO25_SSP1_TXD,
  84         GPIO26_SSP1_RXD,
  85
  86         /* SSP2 */
  87         GPIO19_GPIO,    /* SSP2 clock is used as GPIO for Libertas pin-strap */
  88         GPIO14_GPIO,
  89         GPIO87_SSP2_TXD,
  90         GPIO88_SSP2_RXD,
  91
  92         /* PC Card */
  93         GPIO48_nPOE,
  94         GPIO49_nPWE,
  95         GPIO50_nPIOR,
  96         GPIO51_nPIOW,
  97         GPIO85_nPCE_1,
  98         GPIO54_nPCE_2,
  99         GPIO55_nPREG,
 100         GPIO56_nPWAIT,
 101         GPIO57_nIOIS16,
 102
 103         /* SDRAM and local bus */
 104         GPIO15_nCS_1,
 105         GPIO78_nCS_2,
 106         GPIO79_nCS_3,
 107         GPIO80_nCS_4,
 108         GPIO33_nCS_5,
 109         GPIO49_nPWE,
 110         GPIO18_RDY,
 111
 112         /* GPIO */
 113         GPIO0_GPIO      | WAKEUP_ON_EDGE_BOTH,
 114         GPIO105_GPIO    | MFP_LPM_DRIVE_HIGH,   /* MMC/SD power */
 115         GPIO53_GPIO,                            /* PC card reset */
 116         GPIO102_GPIO,                           /* WLAN reset */
 117
 118         /* NAND controls */
 119         GPIO11_GPIO     | MFP_LPM_DRIVE_HIGH,   /* NAND CE# */
 120         GPIO89_GPIO,                            /* NAND Ready/Busy */
 121
 122         /* interrupts */
 123         GPIO10_GPIO,    /* DM9000 interrupt */
 124         GPIO83_GPIO,    /* MMC card detect */
 125         GPIO95_GPIO,    /* WLAN interrupt */
 126 };
 127
 128 /* V3020 RTC */
 129 #if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
 130 static struct resource cmx270_v3020_resource[] = {
 131         [0] = {
 132                 .start = RTC_PHYS_BASE,
 133                 .end   = RTC_PHYS_BASE + 4,
 134                 .flags = IORESOURCE_MEM,
 135         },
 136 };
 137
 138 struct v3020_platform_data cmx270_v3020_pdata = {
 139         .leftshift = 16,
 140 };
 141
 142 static struct platform_device cmx270_rtc_device = {
 143         .name           = "v3020",
 144         .num_resources  = ARRAY_SIZE(cmx270_v3020_resource),
 145         .resource       = cmx270_v3020_resource,
 146         .id             = -1,
 147         .dev            = {
 148                 .platform_data = &cmx270_v3020_pdata,
 149         }
 150 };
 151
 152 static void __init cmx270_init_rtc(void)
 153 {
 154         platform_device_register(&cmx270_rtc_device);
 155 }
 156 #else
 157 static inline void cmx270_init_rtc(void) {}
 158 #endif
 159
 160 /* 2700G graphics */
 161 #if defined(CONFIG_FB_MBX) || defined(CONFIG_FB_MBX_MODULE)
 162 static u64 fb_dma_mask = ~(u64)0;
 163
 164 static struct resource cmx270_2700G_resource[] = {
 165         /* frame buffer memory including ODFB and External SDRAM */
 166         [0] = {
 167                 .start = PXA_CS2_PHYS,
 168                 .end   = PXA_CS2_PHYS + 0x01ffffff,
 169                 .flags = IORESOURCE_MEM,
 170         },
 171         /* Marathon registers */
 172         [1] = {
 173                 .start = PXA_CS2_PHYS + 0x03fe0000,
 174                 .end   = PXA_CS2_PHYS + 0x03ffffff,
 175                 .flags = IORESOURCE_MEM,
 176         },
 177 };
 178
 179 static unsigned long cmx270_marathon_on[] = {
 180         GPIO58_GPIO,
 181         GPIO59_GPIO,
 182         GPIO60_GPIO,
 183         GPIO61_GPIO,
 184         GPIO62_GPIO,
 185         GPIO63_GPIO,
 186         GPIO64_GPIO,
 187         GPIO65_GPIO,
 188         GPIO66_GPIO,
 189         GPIO67_GPIO,
 190         GPIO68_GPIO,
 191         GPIO69_GPIO,
 192         GPIO70_GPIO,
 193         GPIO71_GPIO,
 194         GPIO72_GPIO,
 195         GPIO73_GPIO,
 196         GPIO74_GPIO,
 197         GPIO75_GPIO,
 198         GPIO76_GPIO,
 199         GPIO77_GPIO,
 200 };
 201
 202 static unsigned long cmx270_marathon_off[] = {
 203         GPIOxx_LCD_TFT_16BPP,
 204 };
 205
 206 static int cmx270_marathon_probe(struct fb_info *fb)
 207 {
 208         int gpio, err;
 209
 210         for (gpio = 58; gpio <= 77; gpio++) {
 211                 err = gpio_request(gpio, "LCD");
 212                 if (err)
 213                         return err;
 214                 gpio_direction_input(gpio);
 215         }
 216
 217         pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_marathon_on));
 218         return 0;
 219 }
 220
 221 static int cmx270_marathon_remove(struct fb_info *fb)
 222 {
 223         int gpio;
 224
 225         pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_marathon_off));
 226
 227         for (gpio = 58; gpio <= 77; gpio++)
 228                 gpio_free(gpio);
 229
 230         return 0;
 231 }
 232
 233 static struct mbxfb_platform_data cmx270_2700G_data = {
 234         .xres = {
 235                 .min = 240,
 236                 .max = 1200,
 237                 .defval = 640,
 238         },
 239         .yres = {
 240                 .min = 240,
 241                 .max = 1200,
 242                 .defval = 480,
 243         },
 244         .bpp = {
 245                 .min = 16,
 246                 .max = 32,
 247                 .defval = 16,
 248         },
 249         .memsize = 8*1024*1024,
 250         .probe = cmx270_marathon_probe,
 251         .remove = cmx270_marathon_remove,
 252 };
 253
 254 static struct platform_device cmx270_2700G = {
 255         .name           = "mbx-fb",
 256         .dev            = {
 257                 .platform_data  = &cmx270_2700G_data,
 258                 .dma_mask       = &fb_dma_mask,
 259                 .coherent_dma_mask = 0xffffffff,
 260         },
 261         .num_resources  = ARRAY_SIZE(cmx270_2700G_resource),
 262         .resource       = cmx270_2700G_resource,
 263         .id             = -1,
 264 };
 265
 266 static void __init cmx270_init_2700G(void)
 267 {
 268         platform_device_register(&cmx270_2700G);
 269 }
 270 #else
 271 static inline void cmx270_init_2700G(void) {}
 272 #endif
 273
 274 /* PXA27x OHCI controller setup */
 275 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 276 static struct pxaohci_platform_data cmx270_ohci_platform_data = {
 277         .port_mode      = PMM_PERPORT_MODE,
 278         .flags          = ENABLE_PORT1 | ENABLE_PORT2 | POWER_CONTROL_LOW,
 279 };
 280
 281 static void __init cmx270_init_ohci(void)
 282 {
 283         pxa_set_ohci_info(&cmx270_ohci_platform_data);
 284 }
 285 #else
 286 static inline void cmx270_init_ohci(void) {}
 287 #endif
 288
 289 #if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
 290 static struct pxamci_platform_data cmx270_mci_platform_data = {
 291         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 292         .gpio_card_detect       = GPIO83_MMC_IRQ,
 293         .gpio_card_ro           = -1,
 294         .gpio_power             = GPIO105_MMC_POWER,
 295         .gpio_power_invert      = 1,
 296 };
 297
 298 static void __init cmx270_init_mmc(void)
 299 {
 300         pxa_set_mci_info(&cmx270_mci_platform_data);
 301 }
 302 #else
 303 static inline void cmx270_init_mmc(void) {}
 304 #endif
 305
 306 #if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
 307 static struct pxa2xx_spi_master cm_x270_spi_info = {
 308         .num_chipselect = 1,
 309         .enable_dma     = 1,
 310 };
 311
 312 static struct pxa2xx_spi_chip cm_x270_libertas_chip = {
 313         .rx_threshold   = 1,
 314         .tx_threshold   = 1,
 315         .timeout        = 1000,
 316         .gpio_cs        = 14,
 317 };
 318
 319 static unsigned long cm_x270_libertas_pin_config[] = {
 320         /* SSP2 */
 321         GPIO19_SSP2_SCLK,
 322         GPIO14_GPIO,
 323         GPIO87_SSP2_TXD,
 324         GPIO88_SSP2_RXD,
 325
 326 };
 327
 328 static int cm_x270_libertas_setup(struct spi_device *spi)
 329 {
 330         int err = gpio_request(GPIO19_WLAN_STRAP, "WLAN STRAP");
 331         if (err)
 332                 return err;
 333
 334         err = gpio_request(GPIO102_WLAN_RST, "WLAN RST");
 335         if (err)
 336                 goto err_free_strap;
 337
 338         err = gpio_direction_output(GPIO102_WLAN_RST, 0);
 339         if (err)
 340                 goto err_free_strap;
 341         msleep(100);
 342
 343         err = gpio_direction_output(GPIO19_WLAN_STRAP, 1);
 344         if (err)
 345                 goto err_free_strap;
 346         msleep(100);
 347
 348         pxa2xx_mfp_config(ARRAY_AND_SIZE(cm_x270_libertas_pin_config));
 349
 350         gpio_set_value(GPIO102_WLAN_RST, 1);
 351         msleep(100);
 352
 353         spi->bits_per_word = 16;
 354         spi_setup(spi);
 355
 356         return 0;
 357
 358 err_free_strap:
 359         gpio_free(GPIO19_WLAN_STRAP);
 360
 361         return err;
 362 }
 363
 364 static int cm_x270_libertas_teardown(struct spi_device *spi)
 365 {
 366         gpio_set_value(GPIO102_WLAN_RST, 0);
 367         gpio_free(GPIO102_WLAN_RST);
 368         gpio_free(GPIO19_WLAN_STRAP);
 369
 370         return 0;
 371 }
 372
 373 struct libertas_spi_platform_data cm_x270_libertas_pdata = {
 374         .use_dummy_writes       = 1,
 375         .setup                  = cm_x270_libertas_setup,
 376         .teardown               = cm_x270_libertas_teardown,
 377 };
 378
 379 static struct spi_board_info cm_x270_spi_devices[] __initdata = {
 380         {
 381                 .modalias               = "libertas_spi",
 382                 .max_speed_hz           = 13000000,
 383                 .bus_num                = 2,
 384                 .irq                    = gpio_to_irq(95),
 385                 .chip_select            = 0,
 386                 .controller_data        = &cm_x270_libertas_chip,
 387                 .platform_data          = &cm_x270_libertas_pdata,
 388         },
 389 };
 390
 391 static void __init cmx270_init_spi(void)
 392 {
 393         pxa2xx_set_spi_info(2, &cm_x270_spi_info);
 394         spi_register_board_info(ARRAY_AND_SIZE(cm_x270_spi_devices));
 395 }
 396 #else
 397 static inline void cmx270_init_spi(void) {}
 398 #endif
 399
 400 void __init cmx270_init(void)
 401 {
 402         pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_pin_config));
 403
 404 #ifdef CONFIG_PM
 405         pxa27x_set_pwrmode(PWRMODE_DEEPSLEEP);
 406 #endif
 407
 408         cmx270_init_rtc();
 409         cmx270_init_mmc();
 410         cmx270_init_ohci();
 411         cmx270_init_2700G();
 412         cmx270_init_spi();
 413 }