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