arch/arm/mach-omap1/board-nokia770.c

   1 /*
   2  * linux/arch/arm/mach-omap1/board-nokia770.c
   3  *
   4  * Modified from board-generic.c
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/mutex.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/input.h>
  16 #include <linux/clk.h>
  17
  18 #include <linux/spi/spi.h>
  19 #include <linux/spi/ads7846.h>
  20 #include <linux/workqueue.h>
  21 #include <linux/delay.h>
  22
  23 #include <mach/hardware.h>
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/map.h>
  27
  28 #include <mach/gpio.h>
  29 #include <mach/mux.h>
  30 #include <mach/usb.h>
  31 #include <mach/board.h>
  32 #include <mach/keypad.h>
  33 #include <mach/common.h>
  34 #include <mach/dsp_common.h>
  35 #include <mach/omapfb.h>
  36 #include <mach/lcd_mipid.h>
  37 #include <mach/mmc.h>
  38
  39 #define ADS7846_PENDOWN_GPIO    15
  40
  41 static void __init omap_nokia770_init_irq(void)
  42 {
  43         /* On Nokia 770, the SleepX signal is masked with an
  44          * MPUIO line by default.  It has to be unmasked for it
  45          * to become functional */
  46
  47         /* SleepX mask direction */
  48         omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
  49         /* Unmask SleepX signal */
  50         omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
  51
  52         omap1_init_common_hw();
  53         omap_init_irq();
  54 }
  55
  56 static int nokia770_keymap[] = {
  57         KEY(0, 1, GROUP_0 | KEY_UP),
  58         KEY(0, 2, GROUP_1 | KEY_F5),
  59         KEY(1, 0, GROUP_0 | KEY_LEFT),
  60         KEY(1, 1, GROUP_0 | KEY_ENTER),
  61         KEY(1, 2, GROUP_0 | KEY_RIGHT),
  62         KEY(2, 0, GROUP_1 | KEY_ESC),
  63         KEY(2, 1, GROUP_0 | KEY_DOWN),
  64         KEY(2, 2, GROUP_1 | KEY_F4),
  65         KEY(3, 0, GROUP_2 | KEY_F7),
  66         KEY(3, 1, GROUP_2 | KEY_F8),
  67         KEY(3, 2, GROUP_2 | KEY_F6),
  68         0
  69 };
  70
  71 static struct resource nokia770_kp_resources[] = {
  72         [0] = {
  73                 .start  = INT_KEYBOARD,
  74                 .end    = INT_KEYBOARD,
  75                 .flags  = IORESOURCE_IRQ,
  76         },
  77 };
  78
  79 static struct omap_kp_platform_data nokia770_kp_data = {
  80         .rows           = 8,
  81         .cols           = 8,
  82         .keymap         = nokia770_keymap,
  83         .keymapsize     = ARRAY_SIZE(nokia770_keymap),
  84         .delay          = 4,
  85 };
  86
  87 static struct platform_device nokia770_kp_device = {
  88         .name           = "omap-keypad",
  89         .id             = -1,
  90         .dev            = {
  91                 .platform_data = &nokia770_kp_data,
  92         },
  93         .num_resources  = ARRAY_SIZE(nokia770_kp_resources),
  94         .resource       = nokia770_kp_resources,
  95 };
  96
  97 static struct platform_device *nokia770_devices[] __initdata = {
  98         &nokia770_kp_device,
  99 };
 100
 101 static void mipid_shutdown(struct mipid_platform_data *pdata)
 102 {
 103         if (pdata->nreset_gpio != -1) {
 104                 printk(KERN_INFO "shutdown LCD\n");
 105                 gpio_set_value(pdata->nreset_gpio, 0);
 106                 msleep(120);
 107         }
 108 }
 109
 110 static struct mipid_platform_data nokia770_mipid_platform_data = {
 111         .shutdown = mipid_shutdown,
 112 };
 113
 114 static void mipid_dev_init(void)
 115 {
 116         const struct omap_lcd_config *conf;
 117
 118         conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
 119         if (conf != NULL) {
 120                 nokia770_mipid_platform_data.nreset_gpio = conf->nreset_gpio;
 121                 nokia770_mipid_platform_data.data_lines = conf->data_lines;
 122         }
 123 }
 124
 125 static void ads7846_dev_init(void)
 126 {
 127         if (gpio_request(ADS7846_PENDOWN_GPIO, "ADS7846 pendown") < 0)
 128                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 129 }
 130
 131 static int ads7846_get_pendown_state(void)
 132 {
 133         return !gpio_get_value(ADS7846_PENDOWN_GPIO);
 134 }
 135
 136 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
 137         .x_max          = 0x0fff,
 138         .y_max          = 0x0fff,
 139         .x_plate_ohms   = 180,
 140         .pressure_max   = 255,
 141         .debounce_max   = 10,
 142         .debounce_tol   = 3,
 143         .debounce_rep   = 1,
 144         .get_pendown_state      = ads7846_get_pendown_state,
 145 };
 146
 147 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
 148         [0] = {
 149                 .modalias       = "lcd_mipid",
 150                 .bus_num        = 2,
 151                 .chip_select    = 3,
 152                 .max_speed_hz   = 12000000,
 153                 .platform_data  = &nokia770_mipid_platform_data,
 154         },
 155         [1] = {
 156                 .modalias       = "ads7846",
 157                 .bus_num        = 2,
 158                 .chip_select    = 0,
 159                 .max_speed_hz   = 2500000,
 160                 .irq            = OMAP_GPIO_IRQ(15),
 161                 .platform_data  = &nokia770_ads7846_platform_data,
 162         },
 163 };
 164
 165
 166 /* assume no Mini-AB port */
 167
 168 static struct omap_usb_config nokia770_usb_config __initdata = {
 169         .otg            = 1,
 170         .register_host  = 1,
 171         .register_dev   = 1,
 172         .hmc_mode       = 16,
 173         .pins[0]        = 6,
 174 };
 175
 176 #if defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
 177
 178 #define NOKIA770_GPIO_MMC_POWER         41
 179 #define NOKIA770_GPIO_MMC_SWITCH        23
 180
 181 static int nokia770_mmc_set_power(struct device *dev, int slot, int power_on,
 182                                 int vdd)
 183 {
 184         gpio_set_value(NOKIA770_GPIO_MMC_POWER, power_on);
 185         return 0;
 186 }
 187
 188 static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
 189 {
 190         return gpio_get_value(NOKIA770_GPIO_MMC_SWITCH);
 191 }
 192
 193 static struct omap_mmc_platform_data nokia770_mmc2_data = {
 194         .nr_slots                       = 1,
 195         .dma_mask                       = 0xffffffff,
 196         .slots[0]       = {
 197                 .set_power              = nokia770_mmc_set_power,
 198                 .get_cover_state        = nokia770_mmc_get_cover_state,
 199                 .name                   = "mmcblk",
 200         },
 201 };
 202
 203 static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
 204
 205 static void __init nokia770_mmc_init(void)
 206 {
 207         int ret;
 208
 209         ret = gpio_request(NOKIA770_GPIO_MMC_POWER, "MMC power");
 210         if (ret < 0)
 211                 return;
 212         gpio_direction_output(NOKIA770_GPIO_MMC_POWER, 0);
 213
 214         ret = gpio_request(NOKIA770_GPIO_MMC_SWITCH, "MMC cover");
 215         if (ret < 0) {
 216                 gpio_free(NOKIA770_GPIO_MMC_POWER);
 217                 return;
 218         }
 219         gpio_direction_input(NOKIA770_GPIO_MMC_SWITCH);
 220
 221         /* Only the second MMC controller is used */
 222         nokia770_mmc_data[1] = &nokia770_mmc2_data;
 223         omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
 224 }
 225
 226 #else
 227 static inline void nokia770_mmc_init(void)
 228 {
 229 }
 230 #endif
 231
 232 #if     defined(CONFIG_OMAP_DSP)
 233 /*
 234  * audio power control
 235  */
 236 #define HEADPHONE_GPIO          14
 237 #define AMPLIFIER_CTRL_GPIO     58
 238
 239 static struct clk *dspxor_ck;
 240 static DEFINE_MUTEX(audio_pwr_lock);
 241 /*
 242  * audio_pwr_state
 243  * +--+-------------------------+---------------------------------------+
 244  * |-1|down                     |power-up request -> 0                  |
 245  * +--+-------------------------+---------------------------------------+
 246  * | 0|up                       |power-down(1) request -> 1             |
 247  * |  |                         |power-down(2) request -> (ignore)      |
 248  * +--+-------------------------+---------------------------------------+
 249  * | 1|up,                      |power-up request -> 0                  |
 250  * |  |received down(1) request |power-down(2) request -> -1            |
 251  * +--+-------------------------+---------------------------------------+
 252  */
 253 static int audio_pwr_state = -1;
 254
 255 static inline void aic23_power_up(void)
 256 {
 257 }
 258 static inline void aic23_power_down(void)
 259 {
 260 }
 261
 262 /*
 263  * audio_pwr_up / down should be called under audio_pwr_lock
 264  */
 265 static void nokia770_audio_pwr_up(void)
 266 {
 267         clk_enable(dspxor_ck);
 268
 269         /* Turn on codec */
 270         aic23_power_up();
 271
 272         if (gpio_get_value(HEADPHONE_GPIO))
 273                 /* HP not connected, turn on amplifier */
 274                 gpio_set_value(AMPLIFIER_CTRL_GPIO, 1);
 275         else
 276                 /* HP connected, do not turn on amplifier */
 277                 printk("HP connected\n");
 278 }
 279
 280 static void codec_delayed_power_down(struct work_struct *work)
 281 {
 282         mutex_lock(&audio_pwr_lock);
 283         if (audio_pwr_state == -1)
 284                 aic23_power_down();
 285         clk_disable(dspxor_ck);
 286         mutex_unlock(&audio_pwr_lock);
 287 }
 288
 289 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
 290
 291 static void nokia770_audio_pwr_down(void)
 292 {
 293         /* Turn off amplifier */
 294         gpio_set_value(AMPLIFIER_CTRL_GPIO, 0);
 295
 296         /* Turn off codec: schedule delayed work */
 297         schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
 298 }
 299
 300 static int
 301 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
 302 {
 303         mutex_lock(&audio_pwr_lock);
 304         if (audio_pwr_state == -1)
 305                 nokia770_audio_pwr_up();
 306         /* force audio_pwr_state = 0, even if it was 1. */
 307         audio_pwr_state = 0;
 308         mutex_unlock(&audio_pwr_lock);
 309         return 0;
 310 }
 311
 312 static int
 313 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
 314 {
 315         mutex_lock(&audio_pwr_lock);
 316         switch (stage) {
 317         case 1:
 318                 if (audio_pwr_state == 0)
 319                         audio_pwr_state = 1;
 320                 break;
 321         case 2:
 322                 if (audio_pwr_state == 1) {
 323                         nokia770_audio_pwr_down();
 324                         audio_pwr_state = -1;
 325                 }
 326                 break;
 327         }
 328         mutex_unlock(&audio_pwr_lock);
 329         return 0;
 330 }
 331
 332 static struct dsp_kfunc_device nokia770_audio_device = {
 333         .name    = "audio",
 334         .type    = DSP_KFUNC_DEV_TYPE_AUDIO,
 335         .enable  = nokia770_audio_pwr_up_request,
 336         .disable = nokia770_audio_pwr_down_request,
 337 };
 338
 339 static __init int omap_dsp_init(void)
 340 {
 341         int ret;
 342
 343         dspxor_ck = clk_get(0, "dspxor_ck");
 344         if (IS_ERR(dspxor_ck)) {
 345                 printk(KERN_ERR "couldn't acquire dspxor_ck\n");
 346                 return PTR_ERR(dspxor_ck);
 347         }
 348
 349         ret = dsp_kfunc_device_register(&nokia770_audio_device);
 350         if (ret) {
 351                 printk(KERN_ERR
 352                        "KFUNC device registration faild: %s\n",
 353                        nokia770_audio_device.name);
 354                 goto out;
 355         }
 356         return 0;
 357  out:
 358         return ret;
 359 }
 360 #else
 361 #define omap_dsp_init()         do {} while (0)
 362 #endif  /* CONFIG_OMAP_DSP */
 363
 364 static void __init omap_nokia770_init(void)
 365 {
 366         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
 367         spi_register_board_info(nokia770_spi_board_info,
 368                                 ARRAY_SIZE(nokia770_spi_board_info));
 369         omap_gpio_init();
 370         omap_serial_init();
 371         omap_register_i2c_bus(1, 100, NULL, 0);
 372         omap_dsp_init();
 373         ads7846_dev_init();
 374         mipid_dev_init();
 375         omap_usb_init(&nokia770_usb_config);
 376         nokia770_mmc_init();
 377 }
 378
 379 static void __init omap_nokia770_map_io(void)
 380 {
 381         omap1_map_common_io();
 382 }
 383
 384 MACHINE_START(NOKIA770, "Nokia 770")
 385         .phys_io        = 0xfff00000,
 386         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 387         .boot_params    = 0x10000100,
 388         .map_io         = omap_nokia770_map_io,
 389         .init_irq       = omap_nokia770_init_irq,
 390         .init_machine   = omap_nokia770_init,
 391         .timer          = &omap_timer,
 392 MACHINE_END