arch/arm/mach-pxa/palmtx.c

   1 /*
   2  * Hardware definitions for PalmTX
   3  *
   4  * Author:     Marek Vasut <marek.vasut@gmail.com>
   5  *
   6  * Based on work of:
   7  *              Alex Osborne <ato@meshy.org>
   8  *              Cristiano P. <cristianop@users.sourceforge.net>
   9  *              Jan Herman <2hp@seznam.cz>
  10  *              Michal Hrusecky
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  *
  16  * (find more info at www.hackndev.com)
  17  *
  18  */
  19
  20 #include <linux/platform_device.h>
  21 #include <linux/delay.h>
  22 #include <linux/irq.h>
  23 #include <linux/gpio_keys.h>
  24 #include <linux/input.h>
  25 #include <linux/pda_power.h>
  26 #include <linux/pwm_backlight.h>
  27 #include <linux/gpio.h>
  28 #include <linux/wm97xx_batt.h>
  29 #include <linux/power_supply.h>
  30
  31 #include <asm/mach-types.h>
  32 #include <asm/mach/arch.h>
  33 #include <asm/mach/map.h>
  34
  35 #include <mach/audio.h>
  36 #include <mach/palmtx.h>
  37 #include <mach/mmc.h>
  38 #include <mach/pxafb.h>
  39 #include <mach/pxa-regs.h>
  40 #include <mach/mfp-pxa27x.h>
  41 #include <mach/irda.h>
  42 #include <mach/pxa27x_keypad.h>
  43 #include <mach/udc.h>
  44
  45 #include "generic.h"
  46 #include "devices.h"
  47
  48 /******************************************************************************
  49  * Pin configuration
  50  ******************************************************************************/
  51 static unsigned long palmtx_pin_config[] __initdata = {
  52         /* MMC */
  53         GPIO32_MMC_CLK,
  54         GPIO92_MMC_DAT_0,
  55         GPIO109_MMC_DAT_1,
  56         GPIO110_MMC_DAT_2,
  57         GPIO111_MMC_DAT_3,
  58         GPIO112_MMC_CMD,
  59
  60         /* AC97 */
  61         GPIO28_AC97_BITCLK,
  62         GPIO29_AC97_SDATA_IN_0,
  63         GPIO30_AC97_SDATA_OUT,
  64         GPIO31_AC97_SYNC,
  65
  66         /* IrDA */
  67         GPIO46_FICP_RXD,
  68         GPIO47_FICP_TXD,
  69
  70         /* PWM */
  71         GPIO16_PWM0_OUT,
  72
  73         /* USB */
  74         GPIO13_GPIO,
  75
  76         /* PCMCIA */
  77         GPIO48_nPOE,
  78         GPIO49_nPWE,
  79         GPIO50_nPIOR,
  80         GPIO51_nPIOW,
  81         GPIO85_nPCE_1,
  82         GPIO54_nPCE_2,
  83         GPIO79_PSKTSEL,
  84         GPIO55_nPREG,
  85         GPIO56_nPWAIT,
  86         GPIO57_nIOIS16,
  87 };
  88
  89 /******************************************************************************
  90  * SD/MMC card controller
  91  ******************************************************************************/
  92 static int palmtx_mci_init(struct device *dev, irq_handler_t palmtx_detect_int,
  93                                 void *data)
  94 {
  95         int err = 0;
  96
  97         /* Setup an interrupt for detecting card insert/remove events */
  98         err = request_irq(IRQ_GPIO_PALMTX_SD_DETECT_N, palmtx_detect_int,
  99                         IRQF_DISABLED | IRQF_SAMPLE_RANDOM |
 100                         IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
 101                         "SD/MMC card detect", data);
 102         if (err) {
 103                 printk(KERN_ERR "%s: cannot request SD/MMC card detect IRQ\n",
 104                                 __func__);
 105                 return err;
 106         }
 107
 108         err = gpio_request(GPIO_NR_PALMTX_SD_POWER, "SD_POWER");
 109         if (err)
 110                 goto pwr_err;
 111
 112         err = gpio_request(GPIO_NR_PALMTX_SD_READONLY, "SD_READONLY");
 113         if (err)
 114                 goto ro_err;
 115
 116         printk(KERN_DEBUG "%s: irq registered\n", __func__);
 117
 118         return 0;
 119
 120 ro_err:
 121         gpio_free(GPIO_NR_PALMTX_SD_POWER);
 122 pwr_err:
 123         free_irq(IRQ_GPIO_PALMTX_SD_DETECT_N, data);
 124         return err;
 125 }
 126
 127 static void palmtx_mci_exit(struct device *dev, void *data)
 128 {
 129         gpio_free(GPIO_NR_PALMTX_SD_READONLY);
 130         gpio_free(GPIO_NR_PALMTX_SD_POWER);
 131         free_irq(IRQ_GPIO_PALMTX_SD_DETECT_N, data);
 132 }
 133
 134 static void palmtx_mci_power(struct device *dev, unsigned int vdd)
 135 {
 136         struct pxamci_platform_data *p_d = dev->platform_data;
 137         gpio_set_value(GPIO_NR_PALMTX_SD_POWER, p_d->ocr_mask & (1 << vdd));
 138 }
 139
 140 static int palmtx_mci_get_ro(struct device *dev)
 141 {
 142         return gpio_get_value(GPIO_NR_PALMTX_SD_READONLY);
 143 }
 144
 145 static struct pxamci_platform_data palmtx_mci_platform_data = {
 146         .ocr_mask       = MMC_VDD_32_33 | MMC_VDD_33_34,
 147         .setpower       = palmtx_mci_power,
 148         .get_ro         = palmtx_mci_get_ro,
 149         .init           = palmtx_mci_init,
 150         .exit           = palmtx_mci_exit,
 151 };
 152
 153 /******************************************************************************
 154  * GPIO keyboard
 155  ******************************************************************************/
 156 static unsigned int palmtx_matrix_keys[] = {
 157         KEY(0, 0, KEY_POWER),
 158         KEY(0, 1, KEY_F1),
 159         KEY(0, 2, KEY_ENTER),
 160
 161         KEY(1, 0, KEY_F2),
 162         KEY(1, 1, KEY_F3),
 163         KEY(1, 2, KEY_F4),
 164
 165         KEY(2, 0, KEY_UP),
 166         KEY(2, 2, KEY_DOWN),
 167
 168         KEY(3, 0, KEY_RIGHT),
 169         KEY(3, 2, KEY_LEFT),
 170
 171 };
 172
 173 static struct pxa27x_keypad_platform_data palmtx_keypad_platform_data = {
 174         .matrix_key_rows        = 4,
 175         .matrix_key_cols        = 3,
 176         .matrix_key_map         = palmtx_matrix_keys,
 177         .matrix_key_map_size    = ARRAY_SIZE(palmtx_matrix_keys),
 178
 179         .debounce_interval      = 30,
 180 };
 181
 182 /******************************************************************************
 183  * GPIO keys
 184  ******************************************************************************/
 185 static struct gpio_keys_button palmtx_pxa_buttons[] = {
 186         {KEY_F8, GPIO_NR_PALMTX_HOTSYNC_BUTTON_N, 1, "HotSync Button" },
 187 };
 188
 189 static struct gpio_keys_platform_data palmtx_pxa_keys_data = {
 190         .buttons        = palmtx_pxa_buttons,
 191         .nbuttons       = ARRAY_SIZE(palmtx_pxa_buttons),
 192 };
 193
 194 static struct platform_device palmtx_pxa_keys = {
 195         .name   = "gpio-keys",
 196         .id     = -1,
 197         .dev    = {
 198                 .platform_data = &palmtx_pxa_keys_data,
 199         },
 200 };
 201
 202 /******************************************************************************
 203  * Backlight
 204  ******************************************************************************/
 205 static int palmtx_backlight_init(struct device *dev)
 206 {
 207         int ret;
 208
 209         ret = gpio_request(GPIO_NR_PALMTX_BL_POWER, "BL POWER");
 210         if (ret)
 211                 goto err;
 212         ret = gpio_request(GPIO_NR_PALMTX_LCD_POWER, "LCD POWER");
 213         if (ret)
 214                 goto err2;
 215
 216         return 0;
 217 err2:
 218         gpio_free(GPIO_NR_PALMTX_BL_POWER);
 219 err:
 220         return ret;
 221 }
 222
 223 static int palmtx_backlight_notify(int brightness)
 224 {
 225         gpio_set_value(GPIO_NR_PALMTX_BL_POWER, brightness);
 226         gpio_set_value(GPIO_NR_PALMTX_LCD_POWER, brightness);
 227         return brightness;
 228 }
 229
 230 static void palmtx_backlight_exit(struct device *dev)
 231 {
 232         gpio_free(GPIO_NR_PALMTX_BL_POWER);
 233         gpio_free(GPIO_NR_PALMTX_LCD_POWER);
 234 }
 235
 236 static struct platform_pwm_backlight_data palmtx_backlight_data = {
 237         .pwm_id         = 0,
 238         .max_brightness = PALMTX_MAX_INTENSITY,
 239         .dft_brightness = PALMTX_MAX_INTENSITY,
 240         .pwm_period_ns  = PALMTX_PERIOD_NS,
 241         .init           = palmtx_backlight_init,
 242         .notify         = palmtx_backlight_notify,
 243         .exit           = palmtx_backlight_exit,
 244 };
 245
 246 static struct platform_device palmtx_backlight = {
 247         .name   = "pwm-backlight",
 248         .dev    = {
 249                 .parent         = &pxa27x_device_pwm0.dev,
 250                 .platform_data  = &palmtx_backlight_data,
 251         },
 252 };
 253
 254 /******************************************************************************
 255  * IrDA
 256  ******************************************************************************/
 257 static void palmtx_irda_transceiver_mode(struct device *dev, int mode)
 258 {
 259         gpio_set_value(GPIO_NR_PALMTX_IR_DISABLE, mode & IR_OFF);
 260         pxa2xx_transceiver_mode(dev, mode);
 261 }
 262
 263 static struct pxaficp_platform_data palmtx_ficp_platform_data = {
 264         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE | IR_OFF,
 265         .transceiver_mode       = palmtx_irda_transceiver_mode,
 266 };
 267
 268 /******************************************************************************
 269  * UDC
 270  ******************************************************************************/
 271 static void palmtx_udc_command(int cmd)
 272 {
 273         gpio_set_value(GPIO_NR_PALMTX_USB_POWER, !cmd);
 274         udelay(50);
 275         gpio_set_value(GPIO_NR_PALMTX_USB_PULLUP, !cmd);
 276 }
 277
 278 static struct pxa2xx_udc_mach_info palmtx_udc_info __initdata = {
 279         .gpio_vbus              = GPIO_NR_PALMTX_USB_DETECT_N,
 280         .gpio_vbus_inverted     = 1,
 281         .udc_command            = palmtx_udc_command,
 282 };
 283
 284 /******************************************************************************
 285  * Power supply
 286  ******************************************************************************/
 287 static int power_supply_init(struct device *dev)
 288 {
 289         int ret;
 290
 291         ret = gpio_request(GPIO_NR_PALMTX_POWER_DETECT, "CABLE_STATE_AC");
 292         if (ret)
 293                 goto err_cs_ac;
 294
 295         ret = gpio_request(GPIO_NR_PALMTX_USB_DETECT_N, "CABLE_STATE_USB");
 296         if (ret)
 297                 goto err_cs_usb;
 298
 299         return 0;
 300
 301 err_cs_usb:
 302         gpio_free(GPIO_NR_PALMTX_POWER_DETECT);
 303 err_cs_ac:
 304         return ret;
 305 }
 306
 307 static int palmtx_is_ac_online(void)
 308 {
 309         return gpio_get_value(GPIO_NR_PALMTX_POWER_DETECT);
 310 }
 311
 312 static int palmtx_is_usb_online(void)
 313 {
 314         return !gpio_get_value(GPIO_NR_PALMTX_USB_DETECT_N);
 315 }
 316
 317 static void power_supply_exit(struct device *dev)
 318 {
 319         gpio_free(GPIO_NR_PALMTX_USB_DETECT_N);
 320         gpio_free(GPIO_NR_PALMTX_POWER_DETECT);
 321 }
 322
 323 static char *palmtx_supplicants[] = {
 324         "main-battery",
 325 };
 326
 327 static struct pda_power_pdata power_supply_info = {
 328         .init            = power_supply_init,
 329         .is_ac_online    = palmtx_is_ac_online,
 330         .is_usb_online   = palmtx_is_usb_online,
 331         .exit            = power_supply_exit,
 332         .supplied_to     = palmtx_supplicants,
 333         .num_supplicants = ARRAY_SIZE(palmtx_supplicants),
 334 };
 335
 336 static struct platform_device power_supply = {
 337         .name = "pda-power",
 338         .id   = -1,
 339         .dev  = {
 340                 .platform_data = &power_supply_info,
 341         },
 342 };
 343
 344 /******************************************************************************
 345  * WM97xx battery
 346  ******************************************************************************/
 347 static struct wm97xx_batt_info wm97xx_batt_pdata = {
 348         .batt_aux       = WM97XX_AUX_ID3,
 349         .temp_aux       = WM97XX_AUX_ID2,
 350         .charge_gpio    = -1,
 351         .max_voltage    = PALMTX_BAT_MAX_VOLTAGE,
 352         .min_voltage    = PALMTX_BAT_MIN_VOLTAGE,
 353         .batt_mult      = 1000,
 354         .batt_div       = 414,
 355         .temp_mult      = 1,
 356         .temp_div       = 1,
 357         .batt_tech      = POWER_SUPPLY_TECHNOLOGY_LIPO,
 358         .batt_name      = "main-batt",
 359 };
 360
 361 /******************************************************************************
 362  * Framebuffer
 363  ******************************************************************************/
 364 static struct pxafb_mode_info palmtx_lcd_modes[] = {
 365 {
 366         .pixclock       = 57692,
 367         .xres           = 320,
 368         .yres           = 480,
 369         .bpp            = 16,
 370
 371         .left_margin    = 32,
 372         .right_margin   = 1,
 373         .upper_margin   = 7,
 374         .lower_margin   = 1,
 375
 376         .hsync_len      = 4,
 377         .vsync_len      = 1,
 378 },
 379 };
 380
 381 static struct pxafb_mach_info palmtx_lcd_screen = {
 382         .modes          = palmtx_lcd_modes,
 383         .num_modes      = ARRAY_SIZE(palmtx_lcd_modes),
 384         .lcd_conn       = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
 385 };
 386
 387 /******************************************************************************
 388  * Machine init
 389  ******************************************************************************/
 390 static struct platform_device *devices[] __initdata = {
 391 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
 392         &palmtx_pxa_keys,
 393 #endif
 394         &palmtx_backlight,
 395         &power_supply,
 396 };
 397
 398 static struct map_desc palmtx_io_desc[] __initdata = {
 399 {
 400         .virtual        = PALMTX_PCMCIA_VIRT,
 401         .pfn            = __phys_to_pfn(PALMTX_PCMCIA_PHYS),
 402         .length         = PALMTX_PCMCIA_SIZE,
 403         .type           = MT_DEVICE
 404 },
 405 };
 406
 407 static void __init palmtx_map_io(void)
 408 {
 409         pxa_map_io();
 410         iotable_init(palmtx_io_desc, ARRAY_SIZE(palmtx_io_desc));
 411 }
 412
 413 static void __init palmtx_init(void)
 414 {
 415         pxa2xx_mfp_config(ARRAY_AND_SIZE(palmtx_pin_config));
 416
 417         set_pxa_fb_info(&palmtx_lcd_screen);
 418         pxa_set_mci_info(&palmtx_mci_platform_data);
 419         pxa_set_udc_info(&palmtx_udc_info);
 420         pxa_set_ac97_info(NULL);
 421         pxa_set_ficp_info(&palmtx_ficp_platform_data);
 422         pxa_set_keypad_info(&palmtx_keypad_platform_data);
 423         wm97xx_bat_set_pdata(&wm97xx_batt_pdata);
 424
 425         platform_add_devices(devices, ARRAY_SIZE(devices));
 426 }
 427
 428 MACHINE_START(PALMTX, "Palm T|X")
 429         .phys_io        = PALMTX_PHYS_IO_START,
 430         .io_pg_offst    = io_p2v(0x40000000),
 431         .boot_params    = 0xa0000100,
 432         .map_io         = palmtx_map_io,
 433         .init_irq       = pxa27x_init_irq,
 434         .timer          = &pxa_timer,
 435         .init_machine   = palmtx_init
 436 MACHINE_END