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/platform_device.h>
  14 #include <linux/input.h>
  15 #include <linux/clk.h>
  16
  17 #include <linux/spi/spi.h>
  18 #include <linux/spi/ads7846.h>
  19 #include <linux/workqueue.h>
  20 #include <linux/delay.h>
  21 #include <linux/mutex.h>
  22
  23 #include <asm/hardware.h>
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/map.h>
  27
  28 #include <asm/arch/gpio.h>
  29 #include <asm/arch/mux.h>
  30 #include <asm/arch/usb.h>
  31 #include <asm/arch/board.h>
  32 #include <asm/arch/keypad.h>
  33 #include <asm/arch/common.h>
  34 #include <asm/arch/dsp_common.h>
  35 #include <asm/arch/aic23.h>
  36 #include <asm/arch/omapfb.h>
  37 #include <asm/arch/hwa742.h>
  38 #include <asm/arch/lcd_mipid.h>
  39
  40 #define ADS7846_PENDOWN_GPIO    15
  41
  42 static void __init omap_nokia770_init_irq(void)
  43 {
  44         /* On Nokia 770, the SleepX signal is masked with an
  45          * MPUIO line by default.  It has to be unmasked for it
  46          * to become functional */
  47
  48         /* SleepX mask direction */
  49         omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
  50         /* Unmask SleepX signal */
  51         omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
  52
  53         omap1_init_common_hw();
  54         omap_init_irq();
  55 }
  56
  57 static int nokia770_keymap[] = {
  58         KEY(0, 1, GROUP_0 | KEY_UP),
  59         KEY(0, 2, GROUP_1 | KEY_F5),
  60         KEY(1, 0, GROUP_0 | KEY_LEFT),
  61         KEY(1, 1, GROUP_0 | KEY_ENTER),
  62         KEY(1, 2, GROUP_0 | KEY_RIGHT),
  63         KEY(2, 0, GROUP_1 | KEY_ESC),
  64         KEY(2, 1, GROUP_0 | KEY_DOWN),
  65         KEY(2, 2, GROUP_1 | KEY_F4),
  66         KEY(3, 0, GROUP_2 | KEY_F7),
  67         KEY(3, 1, GROUP_2 | KEY_F8),
  68         KEY(3, 2, GROUP_2 | KEY_F6),
  69         0
  70 };
  71
  72 static struct resource nokia770_kp_resources[] = {
  73         [0] = {
  74                 .start  = INT_KEYBOARD,
  75                 .end    = INT_KEYBOARD,
  76                 .flags  = IORESOURCE_IRQ,
  77         },
  78 };
  79
  80 static struct omap_kp_platform_data nokia770_kp_data = {
  81         .rows           = 8,
  82         .cols           = 8,
  83         .keymap         = nokia770_keymap,
  84         .keymapsize     = ARRAY_SIZE(nokia770_keymap),
  85         .delay          = 4,
  86 };
  87
  88 static struct platform_device nokia770_kp_device = {
  89         .name           = "omap-keypad",
  90         .id             = -1,
  91         .dev            = {
  92                 .platform_data = &nokia770_kp_data,
  93         },
  94         .num_resources  = ARRAY_SIZE(nokia770_kp_resources),
  95         .resource       = nokia770_kp_resources,
  96 };
  97
  98 static struct platform_device *nokia770_devices[] __initdata = {
  99         &nokia770_kp_device,
 100 };
 101
 102 static void mipid_shutdown(struct mipid_platform_data *pdata)
 103 {
 104         if (pdata->nreset_gpio != -1) {
 105                 printk(KERN_INFO "shutdown LCD\n");
 106                 omap_set_gpio_dataout(pdata->nreset_gpio, 0);
 107                 msleep(120);
 108         }
 109 }
 110
 111 static struct mipid_platform_data nokia770_mipid_platform_data = {
 112         .shutdown = mipid_shutdown,
 113 };
 114
 115 static void mipid_dev_init(void)
 116 {
 117         const struct omap_lcd_config *conf;
 118
 119         conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
 120         if (conf != NULL) {
 121                 nokia770_mipid_platform_data.nreset_gpio = conf->nreset_gpio;
 122                 nokia770_mipid_platform_data.data_lines = conf->data_lines;
 123         }
 124 }
 125
 126 static void ads7846_dev_init(void)
 127 {
 128         if (omap_request_gpio(ADS7846_PENDOWN_GPIO) < 0)
 129                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 130 }
 131
 132 static int ads7846_get_pendown_state(void)
 133 {
 134         return !omap_get_gpio_datain(ADS7846_PENDOWN_GPIO);
 135 }
 136
 137 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
 138         .x_max          = 0x0fff,
 139         .y_max          = 0x0fff,
 140         .x_plate_ohms   = 180,
 141         .pressure_max   = 255,
 142         .debounce_max   = 10,
 143         .debounce_tol   = 3,
 144         .debounce_rep   = 1,
 145         .get_pendown_state      = ads7846_get_pendown_state,
 146 };
 147
 148 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
 149         [0] = {
 150                 .modalias       = "lcd_mipid",
 151                 .bus_num        = 2,
 152                 .chip_select    = 3,
 153                 .max_speed_hz   = 12000000,
 154                 .platform_data  = &nokia770_mipid_platform_data,
 155         },
 156         [1] = {
 157                 .modalias       = "ads7846",
 158                 .bus_num        = 2,
 159                 .chip_select    = 0,
 160                 .max_speed_hz   = 2500000,
 161                 .irq            = OMAP_GPIO_IRQ(15),
 162                 .platform_data  = &nokia770_ads7846_platform_data,
 163         },
 164 };
 165
 166 static struct {
 167         struct clk *sys_ck;
 168 } hwa742;
 169
 170 static int hwa742_get_clocks(void)
 171 {
 172         hwa742.sys_ck = clk_get(NULL, "bclk");
 173         if (IS_ERR(hwa742.sys_ck)) {
 174                 printk(KERN_ERR "can't get HWA742 clock\n");
 175                 return PTR_ERR(hwa742.sys_ck);
 176         }
 177         return 0;
 178 }
 179
 180 static unsigned long hwa742_get_clock_rate(struct device *dev)
 181 {
 182         return clk_get_rate(hwa742.sys_ck);
 183 }
 184
 185 static void hwa742_power_up(struct device *dev)
 186 {
 187         clk_enable(hwa742.sys_ck);
 188 }
 189
 190 static void hwa742_power_down(struct device *dev)
 191 {
 192         clk_disable(hwa742.sys_ck);
 193 }
 194
 195 static struct hwa742_platform_data nokia770_hwa742_platform_data = {
 196         .get_clock_rate = hwa742_get_clock_rate,
 197         .power_up       = hwa742_power_up,
 198         .power_down     = hwa742_power_down,
 199         .te_connected   = 1,
 200 };
 201
 202 static void hwa742_dev_init(void)
 203 {
 204         hwa742_get_clocks();
 205         omapfb_set_ctrl_platform_data(&nokia770_hwa742_platform_data);
 206 }
 207
 208 /* assume no Mini-AB port */
 209
 210 static struct omap_usb_config nokia770_usb_config __initdata = {
 211         .otg            = 1,
 212         .register_host  = 1,
 213         .register_dev   = 1,
 214         .hmc_mode       = 16,
 215         .pins[0]        = 6,
 216 };
 217
 218 static struct omap_mmc_config nokia770_mmc_config __initdata = {
 219         .mmc[0] = {
 220                 .enabled        = 0,
 221                 .wire4          = 0,
 222                 .wp_pin         = -1,
 223                 .power_pin      = -1,
 224                 .switch_pin     = -1,
 225         },
 226         .mmc[1] = {
 227                 .enabled        = 0,
 228                 .wire4          = 0,
 229                 .wp_pin         = -1,
 230                 .power_pin      = -1,
 231                 .switch_pin     = -1,
 232         },
 233 };
 234
 235 static struct omap_board_config_kernel nokia770_config[] __initdata = {
 236         { OMAP_TAG_USB,         NULL },
 237         { OMAP_TAG_MMC,         &nokia770_mmc_config },
 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_mutex);
 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 /*
 264  * audio_pwr_up / down should be called under audio_pwr_mutex
 265  */
 266 static void nokia770_audio_pwr_up(void)
 267 {
 268         clk_enable(dspxor_ck);
 269
 270         /* Turn on codec */
 271         aic23_power_up();
 272
 273         if (omap_get_gpio_datain(HEADPHONE_GPIO))
 274                 /* HP not connected, turn on amplifier */
 275                 omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
 276         else
 277                 /* HP connected, do not turn on amplifier */
 278                 printk("HP connected\n");
 279 }
 280
 281 static void codec_delayed_power_down(struct work_struct *work)
 282 {
 283         mutex_lock(&audio_pwr_mutex);
 284         if (audio_pwr_state == -1)
 285                 aic23_power_down();
 286         clk_disable(dspxor_ck);
 287         mutex_unlock(&audio_pwr_mutex);
 288 }
 289
 290 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
 291
 292 static void nokia770_audio_pwr_down(void)
 293 {
 294         /* Turn off amplifier */
 295         omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
 296
 297         /* Turn off codec: schedule delayed work */
 298         schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
 299 }
 300
 301 static int
 302 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
 303 {
 304         mutex_lock(&audio_pwr_mutex);
 305         if (audio_pwr_state == -1)
 306                 nokia770_audio_pwr_up();
 307         /* force audio_pwr_state = 0, even if it was 1. */
 308         audio_pwr_state = 0;
 309         mutex_unlock(&audio_pwr_mutex);
 310         return 0;
 311 }
 312
 313 static int
 314 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
 315 {
 316         mutex_lock(&audio_pwr_mutex);
 317         switch (stage) {
 318         case 1:
 319                 if (audio_pwr_state == 0)
 320                         audio_pwr_state = 1;
 321                 break;
 322         case 2:
 323                 if (audio_pwr_state == 1) {
 324                         nokia770_audio_pwr_down();
 325                         audio_pwr_state = -1;
 326                 }
 327                 break;
 328         }
 329         mutex_unlock(&audio_pwr_mutex);
 330         return 0;
 331 }
 332
 333 static struct dsp_kfunc_device nokia770_audio_device = {
 334         .name    = "audio",
 335         .type    = DSP_KFUNC_DEV_TYPE_AUDIO,
 336         .enable  = nokia770_audio_pwr_up_request,
 337         .disable = nokia770_audio_pwr_down_request,
 338 };
 339
 340 static __init int omap_dsp_init(void)
 341 {
 342         int ret;
 343
 344         dspxor_ck = clk_get(0, "dspxor_ck");
 345         if (IS_ERR(dspxor_ck)) {
 346                 printk(KERN_ERR "couldn't acquire dspxor_ck\n");
 347                 return PTR_ERR(dspxor_ck);
 348         }
 349
 350         ret = dsp_kfunc_device_register(&nokia770_audio_device);
 351         if (ret) {
 352                 printk(KERN_ERR
 353                        "KFUNC device registration faild: %s\n",
 354                        nokia770_audio_device.name);
 355                 goto out;
 356         }
 357         return 0;
 358  out:
 359         return ret;
 360 }
 361 #else
 362 #define omap_dsp_init()         do {} while (0)
 363 #endif  /* CONFIG_OMAP_DSP */
 364
 365 static void __init omap_nokia770_init(void)
 366 {
 367         nokia770_config[0].data = &nokia770_usb_config;
 368
 369         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
 370         spi_register_board_info(nokia770_spi_board_info,
 371                                 ARRAY_SIZE(nokia770_spi_board_info));
 372         omap_board_config = nokia770_config;
 373         omap_board_config_size = ARRAY_SIZE(nokia770_config);
 374         omap_gpio_init();
 375         omap_serial_init();
 376         omap_register_i2c_bus(1, 100, NULL, 0);
 377         omap_dsp_init();
 378         hwa742_dev_init();
 379         ads7846_dev_init();
 380         mipid_dev_init();
 381 }
 382
 383 static void __init omap_nokia770_map_io(void)
 384 {
 385         omap1_map_common_io();
 386 }
 387
 388 MACHINE_START(NOKIA770, "Nokia 770")
 389         .phys_io        = 0xfff00000,
 390         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 391         .boot_params    = 0x10000100,
 392         .map_io         = omap_nokia770_map_io,
 393         .init_irq       = omap_nokia770_init_irq,
 394         .init_machine   = omap_nokia770_init,
 395         .timer          = &omap_timer,
 396 MACHINE_END