kernel/2.6.29.6-aldebaran-rt/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         if (power_on)
 185                 gpio_set_value(NOKIA770_GPIO_MMC_POWER, 1);
 186         else
 187                 gpio_set_value(NOKIA770_GPIO_MMC_POWER, 0);
 188
 189         return 0;
 190 }
 191
 192 static int nokia770_mmc_get_cover_state(struct device *dev, int slot)
 193 {
 194         return gpio_get_value(NOKIA770_GPIO_MMC_SWITCH);
 195 }
 196
 197 static struct omap_mmc_platform_data nokia770_mmc2_data = {
 198         .nr_slots                       = 1,
 199         .dma_mask                       = 0xffffffff,
 200         .slots[0]       = {
 201                 .set_power              = nokia770_mmc_set_power,
 202                 .get_cover_state        = nokia770_mmc_get_cover_state,
 203                 .name                   = "mmcblk",
 204         },
 205 };
 206
 207 static struct omap_mmc_platform_data *nokia770_mmc_data[OMAP16XX_NR_MMC];
 208
 209 static void __init nokia770_mmc_init(void)
 210 {
 211         int ret;
 212
 213         ret = gpio_request(NOKIA770_GPIO_MMC_POWER, "MMC power");
 214         if (ret < 0)
 215                 return;
 216         gpio_direction_output(NOKIA770_GPIO_MMC_POWER, 0);
 217
 218         ret = gpio_request(NOKIA770_GPIO_MMC_SWITCH, "MMC cover");
 219         if (ret < 0) {
 220                 gpio_free(NOKIA770_GPIO_MMC_POWER);
 221                 return;
 222         }
 223         gpio_direction_input(NOKIA770_GPIO_MMC_SWITCH);
 224
 225         /* Only the second MMC controller is used */
 226         nokia770_mmc_data[1] = &nokia770_mmc2_data;
 227         omap1_init_mmc(nokia770_mmc_data, OMAP16XX_NR_MMC);
 228 }
 229
 230 #else
 231 static inline void nokia770_mmc_init(void)
 232 {
 233 }
 234 #endif
 235
 236 static struct omap_board_config_kernel nokia770_config[] __initdata = {
 237         { OMAP_TAG_USB,         NULL },
 238 };
 239
 240 #if     defined(CONFIG_OMAP_DSP)
 241 /*
 242  * audio power control
 243  */
 244 #define HEADPHONE_GPIO          14
 245 #define AMPLIFIER_CTRL_GPIO     58
 246
 247 static struct clk *dspxor_ck;
 248 static DEFINE_MUTEX(audio_pwr_lock);
 249 /*
 250  * audio_pwr_state
 251  * +--+-------------------------+---------------------------------------+
 252  * |-1|down                     |power-up request -> 0                  |
 253  * +--+-------------------------+---------------------------------------+
 254  * | 0|up                       |power-down(1) request -> 1             |
 255  * |  |                         |power-down(2) request -> (ignore)      |
 256  * +--+-------------------------+---------------------------------------+
 257  * | 1|up,                      |power-up request -> 0                  |
 258  * |  |received down(1) request |power-down(2) request -> -1            |
 259  * +--+-------------------------+---------------------------------------+
 260  */
 261 static int audio_pwr_state = -1;
 262
 263 static inline void aic23_power_up(void)
 264 {
 265 }
 266 static inline void aic23_power_down(void)
 267 {
 268 }
 269
 270 /*
 271  * audio_pwr_up / down should be called under audio_pwr_lock
 272  */
 273 static void nokia770_audio_pwr_up(void)
 274 {
 275         clk_enable(dspxor_ck);
 276
 277         /* Turn on codec */
 278         aic23_power_up();
 279
 280         if (gpio_get_value(HEADPHONE_GPIO))
 281                 /* HP not connected, turn on amplifier */
 282                 gpio_set_value(AMPLIFIER_CTRL_GPIO, 1);
 283         else
 284                 /* HP connected, do not turn on amplifier */
 285                 printk("HP connected\n");
 286 }
 287
 288 static void codec_delayed_power_down(struct work_struct *work)
 289 {
 290         mutex_lock(&audio_pwr_lock);
 291         if (audio_pwr_state == -1)
 292                 aic23_power_down();
 293         clk_disable(dspxor_ck);
 294         mutex_unlock(&audio_pwr_lock);
 295 }
 296
 297 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
 298
 299 static void nokia770_audio_pwr_down(void)
 300 {
 301         /* Turn off amplifier */
 302         gpio_set_value(AMPLIFIER_CTRL_GPIO, 0);
 303
 304         /* Turn off codec: schedule delayed work */
 305         schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
 306 }
 307
 308 static int
 309 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
 310 {
 311         mutex_lock(&audio_pwr_lock);
 312         if (audio_pwr_state == -1)
 313                 nokia770_audio_pwr_up();
 314         /* force audio_pwr_state = 0, even if it was 1. */
 315         audio_pwr_state = 0;
 316         mutex_unlock(&audio_pwr_lock);
 317         return 0;
 318 }
 319
 320 static int
 321 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
 322 {
 323         mutex_lock(&audio_pwr_lock);
 324         switch (stage) {
 325         case 1:
 326                 if (audio_pwr_state == 0)
 327                         audio_pwr_state = 1;
 328                 break;
 329         case 2:
 330                 if (audio_pwr_state == 1) {
 331                         nokia770_audio_pwr_down();
 332                         audio_pwr_state = -1;
 333                 }
 334                 break;
 335         }
 336         mutex_unlock(&audio_pwr_lock);
 337         return 0;
 338 }
 339
 340 static struct dsp_kfunc_device nokia770_audio_device = {
 341         .name    = "audio",
 342         .type    = DSP_KFUNC_DEV_TYPE_AUDIO,
 343         .enable  = nokia770_audio_pwr_up_request,
 344         .disable = nokia770_audio_pwr_down_request,
 345 };
 346
 347 static __init int omap_dsp_init(void)
 348 {
 349         int ret;
 350
 351         dspxor_ck = clk_get(0, "dspxor_ck");
 352         if (IS_ERR(dspxor_ck)) {
 353                 printk(KERN_ERR "couldn't acquire dspxor_ck\n");
 354                 return PTR_ERR(dspxor_ck);
 355         }
 356
 357         ret = dsp_kfunc_device_register(&nokia770_audio_device);
 358         if (ret) {
 359                 printk(KERN_ERR
 360                        "KFUNC device registration faild: %s\n",
 361                        nokia770_audio_device.name);
 362                 goto out;
 363         }
 364         return 0;
 365  out:
 366         return ret;
 367 }
 368 #else
 369 #define omap_dsp_init()         do {} while (0)
 370 #endif  /* CONFIG_OMAP_DSP */
 371
 372 static void __init omap_nokia770_init(void)
 373 {
 374         nokia770_config[0].data = &nokia770_usb_config;
 375
 376         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
 377         spi_register_board_info(nokia770_spi_board_info,
 378                                 ARRAY_SIZE(nokia770_spi_board_info));
 379         omap_board_config = nokia770_config;
 380         omap_board_config_size = ARRAY_SIZE(nokia770_config);
 381         omap_gpio_init();
 382         omap_serial_init();
 383         omap_register_i2c_bus(1, 100, NULL, 0);
 384         omap_dsp_init();
 385         ads7846_dev_init();
 386         mipid_dev_init();
 387         nokia770_mmc_init();
 388 }
 389
 390 static void __init omap_nokia770_map_io(void)
 391 {
 392         omap1_map_common_io();
 393 }
 394
 395 MACHINE_START(NOKIA770, "Nokia 770")
 396         .phys_io        = 0xfff00000,
 397         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 398         .boot_params    = 0x10000100,
 399         .map_io         = omap_nokia770_map_io,
 400         .init_irq       = omap_nokia770_init_irq,
 401         .init_machine   = omap_nokia770_init,
 402         .timer          = &omap_timer,
 403 MACHINE_END