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
  22 #include <asm/hardware.h>
  23 #include <asm/mach-types.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/map.h>
  26
  27 #include <asm/arch/gpio.h>
  28 #include <asm/arch/mux.h>
  29 #include <asm/arch/usb.h>
  30 #include <asm/arch/board.h>
  31 #include <asm/arch/keypad.h>
  32 #include <asm/arch/common.h>
  33 #include <asm/arch/dsp_common.h>
  34 #include <asm/arch/aic23.h>
  35 #include <asm/arch/gpio.h>
  36 #include <asm/arch/omapfb.h>
  37 #include <asm/arch/lcd_mipid.h>
  38
  39 #include "../plat-omap/dsp/dsp_common.h"
  40
  41 #define ADS7846_PENDOWN_GPIO    15
  42
  43 static void __init omap_nokia770_init_irq(void)
  44 {
  45         /* On Nokia 770, the SleepX signal is masked with an
  46          * MPUIO line by default.  It has to be unmasked for it
  47          * to become functional */
  48
  49         /* SleepX mask direction */
  50         omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
  51         /* Unmask SleepX signal */
  52         omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
  53
  54         omap1_init_common_hw();
  55         omap_init_irq();
  56 }
  57
  58 static int nokia770_keymap[] = {
  59         KEY(0, 1, GROUP_0 | KEY_UP),
  60         KEY(0, 2, GROUP_1 | KEY_F5),
  61         KEY(1, 0, GROUP_0 | KEY_LEFT),
  62         KEY(1, 1, GROUP_0 | KEY_ENTER),
  63         KEY(1, 2, GROUP_0 | KEY_RIGHT),
  64         KEY(2, 0, GROUP_1 | KEY_ESC),
  65         KEY(2, 1, GROUP_0 | KEY_DOWN),
  66         KEY(2, 2, GROUP_1 | KEY_F4),
  67         KEY(3, 0, GROUP_2 | KEY_F7),
  68         KEY(3, 1, GROUP_2 | KEY_F8),
  69         KEY(3, 2, GROUP_2 | KEY_F6),
  70         0
  71 };
  72
  73 static struct resource nokia770_kp_resources[] = {
  74         [0] = {
  75                 .start  = INT_KEYBOARD,
  76                 .end    = INT_KEYBOARD,
  77                 .flags  = IORESOURCE_IRQ,
  78         },
  79 };
  80
  81 static struct omap_kp_platform_data nokia770_kp_data = {
  82         .rows           = 8,
  83         .cols           = 8,
  84         .keymap         = nokia770_keymap,
  85         .keymapsize     = ARRAY_SIZE(nokia770_keymap),
  86         .delay          = 4,
  87 };
  88
  89 static struct platform_device nokia770_kp_device = {
  90         .name           = "omap-keypad",
  91         .id             = -1,
  92         .dev            = {
  93                 .platform_data = &nokia770_kp_data,
  94         },
  95         .num_resources  = ARRAY_SIZE(nokia770_kp_resources),
  96         .resource       = nokia770_kp_resources,
  97 };
  98
  99 static struct platform_device *nokia770_devices[] __initdata = {
 100         &nokia770_kp_device,
 101 };
 102
 103 static void mipid_shutdown(struct mipid_platform_data *pdata)
 104 {
 105         if (pdata->nreset_gpio != -1) {
 106                 printk(KERN_INFO "shutdown LCD\n");
 107                 omap_set_gpio_dataout(pdata->nreset_gpio, 0);
 108                 msleep(120);
 109         }
 110 }
 111
 112 static struct mipid_platform_data nokia770_mipid_platform_data = {
 113         .shutdown = mipid_shutdown,
 114 };
 115
 116 static void mipid_dev_init(void)
 117 {
 118         const struct omap_lcd_config *conf;
 119
 120         conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
 121         if (conf != NULL) {
 122                 nokia770_mipid_platform_data.nreset_gpio = conf->nreset_gpio;
 123                 nokia770_mipid_platform_data.data_lines = conf->data_lines;
 124         }
 125 }
 126
 127 static void ads7846_dev_init(void)
 128 {
 129         if (omap_request_gpio(ADS7846_PENDOWN_GPIO) < 0)
 130                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 131 }
 132
 133 static int ads7846_get_pendown_state(void)
 134 {
 135         return !omap_get_gpio_datain(ADS7846_PENDOWN_GPIO);
 136 }
 137
 138 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
 139         .x_max          = 0x0fff,
 140         .y_max          = 0x0fff,
 141         .x_plate_ohms   = 180,
 142         .pressure_max   = 255,
 143         .debounce_max   = 10,
 144         .debounce_tol   = 3,
 145         .debounce_rep   = 1,
 146         .get_pendown_state      = ads7846_get_pendown_state,
 147 };
 148
 149 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
 150         [0] = {
 151                 .modalias       = "lcd_mipid",
 152                 .bus_num        = 2,
 153                 .chip_select    = 3,
 154                 .max_speed_hz   = 12000000,
 155                 .platform_data  = &nokia770_mipid_platform_data,
 156         },
 157         [1] = {
 158                 .modalias       = "ads7846",
 159                 .bus_num        = 2,
 160                 .chip_select    = 0,
 161                 .max_speed_hz   = 2500000,
 162                 .irq            = OMAP_GPIO_IRQ(15),
 163                 .platform_data  = &nokia770_ads7846_platform_data,
 164         },
 165 };
 166
 167
 168 /* assume no Mini-AB port */
 169
 170 static struct omap_usb_config nokia770_usb_config __initdata = {
 171         .otg            = 1,
 172         .register_host  = 1,
 173         .register_dev   = 1,
 174         .hmc_mode       = 16,
 175         .pins[0]        = 6,
 176 };
 177
 178 static struct omap_mmc_config nokia770_mmc_config __initdata = {
 179         .mmc[0] = {
 180                 .enabled        = 0,
 181                 .wire4          = 0,
 182                 .wp_pin         = -1,
 183                 .power_pin      = -1,
 184                 .switch_pin     = -1,
 185         },
 186         .mmc[1] = {
 187                 .enabled        = 0,
 188                 .wire4          = 0,
 189                 .wp_pin         = -1,
 190                 .power_pin      = -1,
 191                 .switch_pin     = -1,
 192         },
 193 };
 194
 195 static struct omap_board_config_kernel nokia770_config[] = {
 196         { OMAP_TAG_USB,         NULL },
 197         { OMAP_TAG_MMC,         &nokia770_mmc_config },
 198 };
 199
 200 #if     defined(CONFIG_OMAP_DSP)
 201 /*
 202  * audio power control
 203  */
 204 #define HEADPHONE_GPIO          14
 205 #define AMPLIFIER_CTRL_GPIO     58
 206
 207 static struct clk *dspxor_ck;
 208 static DECLARE_MUTEX(audio_pwr_sem);
 209 /*
 210  * audio_pwr_state
 211  * +--+-------------------------+---------------------------------------+
 212  * |-1|down                     |power-up request -> 0                  |
 213  * +--+-------------------------+---------------------------------------+
 214  * | 0|up                       |power-down(1) request -> 1             |
 215  * |  |                         |power-down(2) request -> (ignore)      |
 216  * +--+-------------------------+---------------------------------------+
 217  * | 1|up,                      |power-up request -> 0                  |
 218  * |  |received down(1) request |power-down(2) request -> -1            |
 219  * +--+-------------------------+---------------------------------------+
 220  */
 221 static int audio_pwr_state = -1;
 222
 223 /*
 224  * audio_pwr_up / down should be called under audio_pwr_sem
 225  */
 226 static void nokia770_audio_pwr_up(void)
 227 {
 228         clk_enable(dspxor_ck);
 229
 230         /* Turn on codec */
 231         aic23_power_up();
 232
 233         if (omap_get_gpio_datain(HEADPHONE_GPIO))
 234                 /* HP not connected, turn on amplifier */
 235                 omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
 236         else
 237                 /* HP connected, do not turn on amplifier */
 238                 printk("HP connected\n");
 239 }
 240
 241 static void codec_delayed_power_down(struct work_struct *work)
 242 {
 243         down(&audio_pwr_sem);
 244         if (audio_pwr_state == -1)
 245                 aic23_power_down();
 246         clk_disable(dspxor_ck);
 247         up(&audio_pwr_sem);
 248 }
 249
 250 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
 251
 252 static void nokia770_audio_pwr_down(void)
 253 {
 254         /* Turn off amplifier */
 255         omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
 256
 257         /* Turn off codec: schedule delayed work */
 258         schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
 259 }
 260
 261 static int
 262 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
 263 {
 264         down(&audio_pwr_sem);
 265         if (audio_pwr_state == -1)
 266                 nokia770_audio_pwr_up();
 267         /* force audio_pwr_state = 0, even if it was 1. */
 268         audio_pwr_state = 0;
 269         up(&audio_pwr_sem);
 270         return 0;
 271 }
 272
 273 static int
 274 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
 275 {
 276         down(&audio_pwr_sem);
 277         switch (stage) {
 278         case 1:
 279                 if (audio_pwr_state == 0)
 280                         audio_pwr_state = 1;
 281                 break;
 282         case 2:
 283                 if (audio_pwr_state == 1) {
 284                         nokia770_audio_pwr_down();
 285                         audio_pwr_state = -1;
 286                 }
 287                 break;
 288         }
 289         up(&audio_pwr_sem);
 290         return 0;
 291 }
 292
 293 static struct dsp_kfunc_device nokia770_audio_device = {
 294         .name    = "audio",
 295         .type    = DSP_KFUNC_DEV_TYPE_AUDIO,
 296         .enable  = nokia770_audio_pwr_up_request,
 297         .disable = nokia770_audio_pwr_down_request,
 298 };
 299
 300 static __init int omap_dsp_init(void)
 301 {
 302         int ret;
 303
 304         dspxor_ck = clk_get(0, "dspxor_ck");
 305         if (IS_ERR(dspxor_ck)) {
 306                 printk(KERN_ERR "couldn't acquire dspxor_ck\n");
 307                 return PTR_ERR(dspxor_ck);
 308         }
 309
 310         ret = dsp_kfunc_device_register(&nokia770_audio_device);
 311         if (ret) {
 312                 printk(KERN_ERR
 313                        "KFUNC device registration faild: %s\n",
 314                        nokia770_audio_device.name);
 315                 goto out;
 316         }
 317         return 0;
 318  out:
 319         return ret;
 320 }
 321 #endif  /* CONFIG_OMAP_DSP */
 322
 323 static void __init omap_nokia770_init(void)
 324 {
 325         nokia770_config[0].data = &nokia770_usb_config;
 326
 327         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
 328         spi_register_board_info(nokia770_spi_board_info,
 329                                 ARRAY_SIZE(nokia770_spi_board_info));
 330         omap_board_config = nokia770_config;
 331         omap_board_config_size = ARRAY_SIZE(nokia770_config);
 332         omap_gpio_init();
 333         omap_serial_init();
 334         omap_dsp_init();
 335         ads7846_dev_init();
 336         mipid_dev_init();
 337 }
 338
 339 static void __init omap_nokia770_map_io(void)
 340 {
 341         omap1_map_common_io();
 342 }
 343
 344 MACHINE_START(NOKIA770, "Nokia 770")
 345         .phys_io        = 0xfff00000,
 346         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 347         .boot_params    = 0x10000100,
 348         .map_io         = omap_nokia770_map_io,
 349         .init_irq       = omap_nokia770_init_irq,
 350         .init_machine   = omap_nokia770_init,
 351         .timer          = &omap_timer,
 352 MACHINE_END