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/libertas_spi.h>
  23
  24 #include <mach/pxa27x.h>
  25 #include <mach/ohci.h>
  26 #include <mach/mmc.h>
  27 #include <mach/pxa2xx_spi.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         GPIO58_LCD_LDD_0,
  75         GPIO59_LCD_LDD_1,
  76         GPIO60_LCD_LDD_2,
  77         GPIO61_LCD_LDD_3,
  78         GPIO62_LCD_LDD_4,
  79         GPIO63_LCD_LDD_5,
  80         GPIO64_LCD_LDD_6,
  81         GPIO65_LCD_LDD_7,
  82         GPIO66_LCD_LDD_8,
  83         GPIO67_LCD_LDD_9,
  84         GPIO68_LCD_LDD_10,
  85         GPIO69_LCD_LDD_11,
  86         GPIO70_LCD_LDD_12,
  87         GPIO71_LCD_LDD_13,
  88         GPIO72_LCD_LDD_14,
  89         GPIO73_LCD_LDD_15,
  90         GPIO74_LCD_FCLK,
  91         GPIO75_LCD_LCLK,
  92         GPIO76_LCD_PCLK,
  93         GPIO77_LCD_BIAS,
  94
  95         /* I2C */
  96         GPIO117_I2C_SCL,
  97         GPIO118_I2C_SDA,
  98
  99         /* SSP1 */
 100         GPIO23_SSP1_SCLK,
 101         GPIO24_SSP1_SFRM,
 102         GPIO25_SSP1_TXD,
 103         GPIO26_SSP1_RXD,
 104
 105         /* SSP2 */
 106         GPIO19_GPIO,    /* SSP2 clock is used as GPIO for Libertas pin-strap */
 107         GPIO14_GPIO,
 108         GPIO87_SSP2_TXD,
 109         GPIO88_SSP2_RXD,
 110
 111         /* PC Card */
 112         GPIO48_nPOE,
 113         GPIO49_nPWE,
 114         GPIO50_nPIOR,
 115         GPIO51_nPIOW,
 116         GPIO85_nPCE_1,
 117         GPIO54_nPCE_2,
 118         GPIO55_nPREG,
 119         GPIO56_nPWAIT,
 120         GPIO57_nIOIS16,
 121
 122         /* SDRAM and local bus */
 123         GPIO15_nCS_1,
 124         GPIO78_nCS_2,
 125         GPIO79_nCS_3,
 126         GPIO80_nCS_4,
 127         GPIO33_nCS_5,
 128         GPIO49_nPWE,
 129         GPIO18_RDY,
 130
 131         /* GPIO */
 132         GPIO0_GPIO      | WAKEUP_ON_EDGE_BOTH,
 133         GPIO105_GPIO    | MFP_LPM_DRIVE_HIGH,   /* MMC/SD power */
 134         GPIO53_GPIO,                            /* PC card reset */
 135         GPIO102_GPIO,                           /* WLAN reset */
 136
 137         /* NAND controls */
 138         GPIO11_GPIO     | MFP_LPM_DRIVE_HIGH,   /* NAND CE# */
 139         GPIO89_GPIO,                            /* NAND Ready/Busy */
 140
 141         /* interrupts */
 142         GPIO10_GPIO,    /* DM9000 interrupt */
 143         GPIO83_GPIO,    /* MMC card detect */
 144         GPIO95_GPIO,    /* WLAN interrupt */
 145 };
 146
 147 /* V3020 RTC */
 148 #if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
 149 static struct resource cmx270_v3020_resource[] = {
 150         [0] = {
 151                 .start = RTC_PHYS_BASE,
 152                 .end   = RTC_PHYS_BASE + 4,
 153                 .flags = IORESOURCE_MEM,
 154         },
 155 };
 156
 157 struct v3020_platform_data cmx270_v3020_pdata = {
 158         .leftshift = 16,
 159 };
 160
 161 static struct platform_device cmx270_rtc_device = {
 162         .name           = "v3020",
 163         .num_resources  = ARRAY_SIZE(cmx270_v3020_resource),
 164         .resource       = cmx270_v3020_resource,
 165         .id             = -1,
 166         .dev            = {
 167                 .platform_data = &cmx270_v3020_pdata,
 168         }
 169 };
 170
 171 static void __init cmx270_init_rtc(void)
 172 {
 173         platform_device_register(&cmx270_rtc_device);
 174 }
 175 #else
 176 static inline void cmx270_init_rtc(void) {}
 177 #endif
 178
 179 /* 2700G graphics */
 180 #if defined(CONFIG_FB_MBX) || defined(CONFIG_FB_MBX_MODULE)
 181 static u64 fb_dma_mask = ~(u64)0;
 182
 183 static struct resource cmx270_2700G_resource[] = {
 184         /* frame buffer memory including ODFB and External SDRAM */
 185         [0] = {
 186                 .start = PXA_CS2_PHYS,
 187                 .end   = PXA_CS2_PHYS + 0x01ffffff,
 188                 .flags = IORESOURCE_MEM,
 189         },
 190         /* Marathon registers */
 191         [1] = {
 192                 .start = PXA_CS2_PHYS + 0x03fe0000,
 193                 .end   = PXA_CS2_PHYS + 0x03ffffff,
 194                 .flags = IORESOURCE_MEM,
 195         },
 196 };
 197
 198 static unsigned long save_lcd_regs[10];
 199
 200 static int cmx270_marathon_probe(struct fb_info *fb)
 201 {
 202         /* save PXA-270 pin settings before enabling 2700G */
 203         save_lcd_regs[0] = GPDR1;
 204         save_lcd_regs[1] = GPDR2;
 205         save_lcd_regs[2] = GAFR1_U;
 206         save_lcd_regs[3] = GAFR2_L;
 207         save_lcd_regs[4] = GAFR2_U;
 208
 209         /* Disable PXA-270 on-chip controller driving pins */
 210         GPDR1 &= ~(0xfc000000);
 211         GPDR2 &= ~(0x00c03fff);
 212         GAFR1_U &= ~(0xfff00000);
 213         GAFR2_L &= ~(0x0fffffff);
 214         GAFR2_U &= ~(0x0000f000);
 215         return 0;
 216 }
 217
 218 static int cmx270_marathon_remove(struct fb_info *fb)
 219 {
 220         GPDR1 =   save_lcd_regs[0];
 221         GPDR2 =   save_lcd_regs[1];
 222         GAFR1_U = save_lcd_regs[2];
 223         GAFR2_L = save_lcd_regs[3];
 224         GAFR2_U = save_lcd_regs[4];
 225         return 0;
 226 }
 227
 228 static struct mbxfb_platform_data cmx270_2700G_data = {
 229         .xres = {
 230                 .min = 240,
 231                 .max = 1200,
 232                 .defval = 640,
 233         },
 234         .yres = {
 235                 .min = 240,
 236                 .max = 1200,
 237                 .defval = 480,
 238         },
 239         .bpp = {
 240                 .min = 16,
 241                 .max = 32,
 242                 .defval = 16,
 243         },
 244         .memsize = 8*1024*1024,
 245         .probe = cmx270_marathon_probe,
 246         .remove = cmx270_marathon_remove,
 247 };
 248
 249 static struct platform_device cmx270_2700G = {
 250         .name           = "mbx-fb",
 251         .dev            = {
 252                 .platform_data  = &cmx270_2700G_data,
 253                 .dma_mask       = &fb_dma_mask,
 254                 .coherent_dma_mask = 0xffffffff,
 255         },
 256         .num_resources  = ARRAY_SIZE(cmx270_2700G_resource),
 257         .resource       = cmx270_2700G_resource,
 258         .id             = -1,
 259 };
 260
 261 static void __init cmx270_init_2700G(void)
 262 {
 263         platform_device_register(&cmx270_2700G);
 264 }
 265 #else
 266 static inline void cmx270_init_2700G(void) {}
 267 #endif
 268
 269 /* PXA27x OHCI controller setup */
 270 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 271 static struct pxaohci_platform_data cmx270_ohci_platform_data = {
 272         .port_mode      = PMM_PERPORT_MODE,
 273         .flags          = ENABLE_PORT1 | ENABLE_PORT2 | POWER_CONTROL_LOW,
 274 };
 275
 276 static void __init cmx270_init_ohci(void)
 277 {
 278         pxa_set_ohci_info(&cmx270_ohci_platform_data);
 279 }
 280 #else
 281 static inline void cmx270_init_ohci(void) {}
 282 #endif
 283
 284 #if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
 285 static struct pxamci_platform_data cmx270_mci_platform_data = {
 286         .ocr_mask               = MMC_VDD_32_33|MMC_VDD_33_34,
 287         .gpio_card_detect       = GPIO83_MMC_IRQ,
 288         .gpio_card_ro           = -1,
 289         .gpio_power             = GPIO105_MMC_POWER,
 290         .gpio_power_invert      = 1,
 291 };
 292
 293 static void __init cmx270_init_mmc(void)
 294 {
 295         pxa_set_mci_info(&cmx270_mci_platform_data);
 296 }
 297 #else
 298 static inline void cmx270_init_mmc(void) {}
 299 #endif
 300
 301 #if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
 302 static struct pxa2xx_spi_master cm_x270_spi_info = {
 303         .num_chipselect = 1,
 304         .enable_dma     = 1,
 305 };
 306
 307 static struct pxa2xx_spi_chip cm_x270_libertas_chip = {
 308         .rx_threshold   = 1,
 309         .tx_threshold   = 1,
 310         .timeout        = 1000,
 311         .gpio_cs        = 14,
 312 };
 313
 314 static unsigned long cm_x270_libertas_pin_config[] = {
 315         /* SSP2 */
 316         GPIO19_SSP2_SCLK,
 317         GPIO14_GPIO,
 318         GPIO87_SSP2_TXD,
 319         GPIO88_SSP2_RXD,
 320
 321 };
 322
 323 static int cm_x270_libertas_setup(struct spi_device *spi)
 324 {
 325         int err = gpio_request(GPIO19_WLAN_STRAP, "WLAN STRAP");
 326         if (err)
 327                 return err;
 328
 329         err = gpio_request(GPIO102_WLAN_RST, "WLAN RST");
 330         if (err)
 331                 goto err_free_strap;
 332
 333         err = gpio_direction_output(GPIO102_WLAN_RST, 0);
 334         if (err)
 335                 goto err_free_strap;
 336         msleep(100);
 337
 338         err = gpio_direction_output(GPIO19_WLAN_STRAP, 1);
 339         if (err)
 340                 goto err_free_strap;
 341         msleep(100);
 342
 343         pxa2xx_mfp_config(ARRAY_AND_SIZE(cm_x270_libertas_pin_config));
 344
 345         gpio_set_value(GPIO102_WLAN_RST, 1);
 346         msleep(100);
 347
 348         spi->bits_per_word = 16;
 349         spi_setup(spi);
 350
 351         return 0;
 352
 353 err_free_strap:
 354         gpio_free(GPIO19_WLAN_STRAP);
 355
 356         return err;
 357 }
 358
 359 static int cm_x270_libertas_teardown(struct spi_device *spi)
 360 {
 361         gpio_set_value(GPIO102_WLAN_RST, 0);
 362         gpio_free(GPIO102_WLAN_RST);
 363         gpio_free(GPIO19_WLAN_STRAP);
 364
 365         return 0;
 366 }
 367
 368 struct libertas_spi_platform_data cm_x270_libertas_pdata = {
 369         .use_dummy_writes       = 1,
 370         .setup                  = cm_x270_libertas_setup,
 371         .teardown               = cm_x270_libertas_teardown,
 372 };
 373
 374 static struct spi_board_info cm_x270_spi_devices[] __initdata = {
 375         {
 376                 .modalias               = "libertas_spi",
 377                 .max_speed_hz           = 13000000,
 378                 .bus_num                = 2,
 379                 .irq                    = gpio_to_irq(95),
 380                 .chip_select            = 0,
 381                 .controller_data        = &cm_x270_libertas_chip,
 382                 .platform_data          = &cm_x270_libertas_pdata,
 383         },
 384 };
 385
 386 static void __init cmx270_init_spi(void)
 387 {
 388         pxa2xx_set_spi_info(2, &cm_x270_spi_info);
 389         spi_register_board_info(ARRAY_AND_SIZE(cm_x270_spi_devices));
 390 }
 391 #else
 392 static inline void cmx270_init_spi(void) {}
 393 #endif
 394
 395 void __init cmx270_init(void)
 396 {
 397         pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_pin_config));
 398
 399 #ifdef CONFIG_PM
 400         pxa27x_set_pwrmode(PWRMODE_DEEPSLEEP);
 401 #endif
 402
 403         cmx270_init_rtc();
 404         cmx270_init_mmc();
 405         cmx270_init_ohci();
 406         cmx270_init_2700G();
 407         cmx270_init_spi();
 408 }