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
  17 #include <linux/rtc-v3020.h>
  18 #include <video/mbxfb.h>
  19
  20 #include <mach/pxa27x.h>
  21 #include <mach/ohci.h>
  22 #include <mach/mmc.h>
  23
  24 #include "generic.h"
  25
  26 /* physical address if local-bus attached devices */
  27 #define RTC_PHYS_BASE           (PXA_CS1_PHYS + (5 << 22))
  28
  29 /* GPIO IRQ usage */
  30 #define GPIO83_MMC_IRQ          (83)
  31
  32 #define CMX270_MMC_IRQ          IRQ_GPIO(GPIO83_MMC_IRQ)
  33
  34 /* MMC power enable */
  35 #define GPIO105_MMC_POWER       (105)
  36
  37 static unsigned long cmx270_pin_config[] = {
  38         /* AC'97 */
  39         GPIO28_AC97_BITCLK,
  40         GPIO29_AC97_SDATA_IN_0,
  41         GPIO30_AC97_SDATA_OUT,
  42         GPIO31_AC97_SYNC,
  43         GPIO98_AC97_SYSCLK,
  44         GPIO113_AC97_nRESET,
  45
  46         /* BTUART */
  47         GPIO42_BTUART_RXD,
  48         GPIO43_BTUART_TXD,
  49         GPIO44_BTUART_CTS,
  50         GPIO45_BTUART_RTS,
  51
  52         /* STUART */
  53         GPIO46_STUART_RXD,
  54         GPIO47_STUART_TXD,
  55
  56         /* MCI controller */
  57         GPIO32_MMC_CLK,
  58         GPIO112_MMC_CMD,
  59         GPIO92_MMC_DAT_0,
  60         GPIO109_MMC_DAT_1,
  61         GPIO110_MMC_DAT_2,
  62         GPIO111_MMC_DAT_3,
  63
  64         /* LCD */
  65         GPIO58_LCD_LDD_0,
  66         GPIO59_LCD_LDD_1,
  67         GPIO60_LCD_LDD_2,
  68         GPIO61_LCD_LDD_3,
  69         GPIO62_LCD_LDD_4,
  70         GPIO63_LCD_LDD_5,
  71         GPIO64_LCD_LDD_6,
  72         GPIO65_LCD_LDD_7,
  73         GPIO66_LCD_LDD_8,
  74         GPIO67_LCD_LDD_9,
  75         GPIO68_LCD_LDD_10,
  76         GPIO69_LCD_LDD_11,
  77         GPIO70_LCD_LDD_12,
  78         GPIO71_LCD_LDD_13,
  79         GPIO72_LCD_LDD_14,
  80         GPIO73_LCD_LDD_15,
  81         GPIO74_LCD_FCLK,
  82         GPIO75_LCD_LCLK,
  83         GPIO76_LCD_PCLK,
  84         GPIO77_LCD_BIAS,
  85
  86         /* I2C */
  87         GPIO117_I2C_SCL,
  88         GPIO118_I2C_SDA,
  89
  90         /* SSP1 */
  91         GPIO23_SSP1_SCLK,
  92         GPIO24_SSP1_SFRM,
  93         GPIO25_SSP1_TXD,
  94         GPIO26_SSP1_RXD,
  95
  96         /* SSP2 */
  97         GPIO19_SSP2_SCLK,
  98         GPIO14_SSP2_SFRM,
  99         GPIO87_SSP2_TXD,
 100         GPIO88_SSP2_RXD,
 101
 102         /* PC Card */
 103         GPIO48_nPOE,
 104         GPIO49_nPWE,
 105         GPIO50_nPIOR,
 106         GPIO51_nPIOW,
 107         GPIO85_nPCE_1,
 108         GPIO54_nPCE_2,
 109         GPIO55_nPREG,
 110         GPIO56_nPWAIT,
 111         GPIO57_nIOIS16,
 112
 113         /* SDRAM and local bus */
 114         GPIO15_nCS_1,
 115         GPIO78_nCS_2,
 116         GPIO79_nCS_3,
 117         GPIO80_nCS_4,
 118         GPIO33_nCS_5,
 119         GPIO49_nPWE,
 120         GPIO18_RDY,
 121
 122         /* GPIO */
 123         GPIO0_GPIO      | WAKEUP_ON_EDGE_BOTH,
 124         GPIO105_GPIO    | MFP_LPM_DRIVE_HIGH,   /* MMC/SD power */
 125         GPIO53_GPIO,                            /* PC card reset */
 126
 127         /* NAND controls */
 128         GPIO11_GPIO     | MFP_LPM_DRIVE_HIGH,   /* NAND CE# */
 129         GPIO89_GPIO,                            /* NAND Ready/Busy */
 130
 131         /* interrupts */
 132         GPIO10_GPIO,    /* DM9000 interrupt */
 133         GPIO83_GPIO,    /* MMC card detect */
 134 };
 135
 136 /* V3020 RTC */
 137 #if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
 138 static struct resource cmx270_v3020_resource[] = {
 139         [0] = {
 140                 .start = RTC_PHYS_BASE,
 141                 .end   = RTC_PHYS_BASE + 4,
 142                 .flags = IORESOURCE_MEM,
 143         },
 144 };
 145
 146 struct v3020_platform_data cmx270_v3020_pdata = {
 147         .leftshift = 16,
 148 };
 149
 150 static struct platform_device cmx270_rtc_device = {
 151         .name           = "v3020",
 152         .num_resources  = ARRAY_SIZE(cmx270_v3020_resource),
 153         .resource       = cmx270_v3020_resource,
 154         .id             = -1,
 155         .dev            = {
 156                 .platform_data = &cmx270_v3020_pdata,
 157         }
 158 };
 159
 160 static void __init cmx270_init_rtc(void)
 161 {
 162         platform_device_register(&cmx270_rtc_device);
 163 }
 164 #else
 165 static inline void cmx270_init_rtc(void) {}
 166 #endif
 167
 168 /* 2700G graphics */
 169 #if defined(CONFIG_FB_MBX) || defined(CONFIG_FB_MBX_MODULE)
 170 static u64 fb_dma_mask = ~(u64)0;
 171
 172 static struct resource cmx270_2700G_resource[] = {
 173         /* frame buffer memory including ODFB and External SDRAM */
 174         [0] = {
 175                 .start = PXA_CS2_PHYS,
 176                 .end   = PXA_CS2_PHYS + 0x01ffffff,
 177                 .flags = IORESOURCE_MEM,
 178         },
 179         /* Marathon registers */
 180         [1] = {
 181                 .start = PXA_CS2_PHYS + 0x03fe0000,
 182                 .end   = PXA_CS2_PHYS + 0x03ffffff,
 183                 .flags = IORESOURCE_MEM,
 184         },
 185 };
 186
 187 static unsigned long save_lcd_regs[10];
 188
 189 static int cmx270_marathon_probe(struct fb_info *fb)
 190 {
 191         /* save PXA-270 pin settings before enabling 2700G */
 192         save_lcd_regs[0] = GPDR1;
 193         save_lcd_regs[1] = GPDR2;
 194         save_lcd_regs[2] = GAFR1_U;
 195         save_lcd_regs[3] = GAFR2_L;
 196         save_lcd_regs[4] = GAFR2_U;
 197
 198         /* Disable PXA-270 on-chip controller driving pins */
 199         GPDR1 &= ~(0xfc000000);
 200         GPDR2 &= ~(0x00c03fff);
 201         GAFR1_U &= ~(0xfff00000);
 202         GAFR2_L &= ~(0x0fffffff);
 203         GAFR2_U &= ~(0x0000f000);
 204         return 0;
 205 }
 206
 207 static int cmx270_marathon_remove(struct fb_info *fb)
 208 {
 209         GPDR1 =   save_lcd_regs[0];
 210         GPDR2 =   save_lcd_regs[1];
 211         GAFR1_U = save_lcd_regs[2];
 212         GAFR2_L = save_lcd_regs[3];
 213         GAFR2_U = save_lcd_regs[4];
 214         return 0;
 215 }
 216
 217 static struct mbxfb_platform_data cmx270_2700G_data = {
 218         .xres = {
 219                 .min = 240,
 220                 .max = 1200,
 221                 .defval = 640,
 222         },
 223         .yres = {
 224                 .min = 240,
 225                 .max = 1200,
 226                 .defval = 480,
 227         },
 228         .bpp = {
 229                 .min = 16,
 230                 .max = 32,
 231                 .defval = 16,
 232         },
 233         .memsize = 8*1024*1024,
 234         .probe = cmx270_marathon_probe,
 235         .remove = cmx270_marathon_remove,
 236 };
 237
 238 static struct platform_device cmx270_2700G = {
 239         .name           = "mbx-fb",
 240         .dev            = {
 241                 .platform_data  = &cmx270_2700G_data,
 242                 .dma_mask       = &fb_dma_mask,
 243                 .coherent_dma_mask = 0xffffffff,
 244         },
 245         .num_resources  = ARRAY_SIZE(cmx270_2700G_resource),
 246         .resource       = cmx270_2700G_resource,
 247         .id             = -1,
 248 };
 249
 250 static void __init cmx270_init_2700G(void)
 251 {
 252         platform_device_register(&cmx270_2700G);
 253 }
 254 #else
 255 static inline void cmx270_init_2700G(void) {}
 256 #endif
 257
 258 /* PXA27x OHCI controller setup */
 259 #if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
 260 static struct pxaohci_platform_data cmx270_ohci_platform_data = {
 261         .port_mode      = PMM_PERPORT_MODE,
 262         .flags          = ENABLE_PORT1 | ENABLE_PORT2 | POWER_CONTROL_LOW,
 263 };
 264
 265 static void __init cmx270_init_ohci(void)
 266 {
 267         pxa_set_ohci_info(&cmx270_ohci_platform_data);
 268 }
 269 #else
 270 static inline void cmx270_init_ohci(void) {}
 271 #endif
 272
 273 #if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
 274 static int cmx270_mci_init(struct device *dev,
 275                            irq_handler_t cmx270_detect_int,
 276                            void *data)
 277 {
 278         int err;
 279
 280         err = gpio_request(GPIO105_MMC_POWER, "MMC/SD power");
 281         if (err) {
 282                 dev_warn(dev, "power gpio unavailable\n");
 283                 return err;
 284         }
 285
 286         gpio_direction_output(GPIO105_MMC_POWER, 0);
 287
 288         err = request_irq(CMX270_MMC_IRQ, cmx270_detect_int,
 289                           IRQF_DISABLED | IRQF_TRIGGER_FALLING,
 290                           "MMC card detect", data);
 291         if (err) {
 292                 gpio_free(GPIO105_MMC_POWER);
 293                 dev_err(dev, "cmx270_mci_init: MMC/SD: can't"
 294                         " request MMC card detect IRQ\n");
 295         }
 296
 297         return err;
 298 }
 299
 300 static void cmx270_mci_setpower(struct device *dev, unsigned int vdd)
 301 {
 302         struct pxamci_platform_data *p_d = dev->platform_data;
 303
 304         if ((1 << vdd) & p_d->ocr_mask) {
 305                 dev_dbg(dev, "power on\n");
 306                 gpio_set_value(GPIO105_MMC_POWER, 0);
 307         } else {
 308                 gpio_set_value(GPIO105_MMC_POWER, 1);
 309                 dev_dbg(dev, "power off\n");
 310         }
 311 }
 312
 313 static void cmx270_mci_exit(struct device *dev, void *data)
 314 {
 315         free_irq(CMX270_MMC_IRQ, data);
 316         gpio_free(GPIO105_MMC_POWER);
 317 }
 318
 319 static struct pxamci_platform_data cmx270_mci_platform_data = {
 320         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
 321         .init           = cmx270_mci_init,
 322         .setpower       = cmx270_mci_setpower,
 323         .exit           = cmx270_mci_exit,
 324 };
 325
 326 static void __init cmx270_init_mmc(void)
 327 {
 328         pxa_set_mci_info(&cmx270_mci_platform_data);
 329 }
 330 #else
 331 static inline void cmx270_init_mmc(void) {}
 332 #endif
 333
 334 void __init cmx270_init(void)
 335 {
 336         pxa2xx_mfp_config(ARRAY_AND_SIZE(cmx270_pin_config));
 337
 338         cmx270_init_rtc();
 339         cmx270_init_mmc();
 340         cmx270_init_ohci();
 341         cmx270_init_2700G();
 342 }