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/omapfb.h>
  36 #include <asm/arch/lcd_mipid.h>
  37
  38 #define ADS7846_PENDOWN_GPIO    15
  39
  40 static void __init omap_nokia770_init_irq(void)
  41 {
  42         /* On Nokia 770, the SleepX signal is masked with an
  43          * MPUIO line by default.  It has to be unmasked for it
  44          * to become functional */
  45
  46         /* SleepX mask direction */
  47         omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
  48         /* Unmask SleepX signal */
  49         omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
  50
  51         omap1_init_common_hw();
  52         omap_init_irq();
  53 }
  54
  55 static int nokia770_keymap[] = {
  56         KEY(0, 1, GROUP_0 | KEY_UP),
  57         KEY(0, 2, GROUP_1 | KEY_F5),
  58         KEY(1, 0, GROUP_0 | KEY_LEFT),
  59         KEY(1, 1, GROUP_0 | KEY_ENTER),
  60         KEY(1, 2, GROUP_0 | KEY_RIGHT),
  61         KEY(2, 0, GROUP_1 | KEY_ESC),
  62         KEY(2, 1, GROUP_0 | KEY_DOWN),
  63         KEY(2, 2, GROUP_1 | KEY_F4),
  64         KEY(3, 0, GROUP_2 | KEY_F7),
  65         KEY(3, 1, GROUP_2 | KEY_F8),
  66         KEY(3, 2, GROUP_2 | KEY_F6),
  67         0
  68 };
  69
  70 static struct resource nokia770_kp_resources[] = {
  71         [0] = {
  72                 .start  = INT_KEYBOARD,
  73                 .end    = INT_KEYBOARD,
  74                 .flags  = IORESOURCE_IRQ,
  75         },
  76 };
  77
  78 static struct omap_kp_platform_data nokia770_kp_data = {
  79         .rows           = 8,
  80         .cols           = 8,
  81         .keymap         = nokia770_keymap,
  82         .keymapsize     = ARRAY_SIZE(nokia770_keymap),
  83         .delay          = 4,
  84 };
  85
  86 static struct platform_device nokia770_kp_device = {
  87         .name           = "omap-keypad",
  88         .id             = -1,
  89         .dev            = {
  90                 .platform_data = &nokia770_kp_data,
  91         },
  92         .num_resources  = ARRAY_SIZE(nokia770_kp_resources),
  93         .resource       = nokia770_kp_resources,
  94 };
  95
  96 static struct platform_device *nokia770_devices[] __initdata = {
  97         &nokia770_kp_device,
  98 };
  99
 100 static void mipid_shutdown(struct mipid_platform_data *pdata)
 101 {
 102         if (pdata->nreset_gpio != -1) {
 103                 printk(KERN_INFO "shutdown LCD\n");
 104                 omap_set_gpio_dataout(pdata->nreset_gpio, 0);
 105                 msleep(120);
 106         }
 107 }
 108
 109 static struct mipid_platform_data nokia770_mipid_platform_data = {
 110         .shutdown = mipid_shutdown,
 111 };
 112
 113 static void mipid_dev_init(void)
 114 {
 115         const struct omap_lcd_config *conf;
 116
 117         conf = omap_get_config(OMAP_TAG_LCD, struct omap_lcd_config);
 118         if (conf != NULL) {
 119                 nokia770_mipid_platform_data.nreset_gpio = conf->nreset_gpio;
 120                 nokia770_mipid_platform_data.data_lines = conf->data_lines;
 121         }
 122 }
 123
 124 static void ads7846_dev_init(void)
 125 {
 126         if (omap_request_gpio(ADS7846_PENDOWN_GPIO) < 0)
 127                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 128 }
 129
 130 static int ads7846_get_pendown_state(void)
 131 {
 132         return !omap_get_gpio_datain(ADS7846_PENDOWN_GPIO);
 133 }
 134
 135 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
 136         .x_max          = 0x0fff,
 137         .y_max          = 0x0fff,
 138         .x_plate_ohms   = 180,
 139         .pressure_max   = 255,
 140         .debounce_max   = 10,
 141         .debounce_tol   = 3,
 142         .debounce_rep   = 1,
 143         .get_pendown_state      = ads7846_get_pendown_state,
 144 };
 145
 146 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
 147         [0] = {
 148                 .modalias       = "lcd_mipid",
 149                 .bus_num        = 2,
 150                 .chip_select    = 3,
 151                 .max_speed_hz   = 12000000,
 152                 .platform_data  = &nokia770_mipid_platform_data,
 153         },
 154         [1] = {
 155                 .modalias       = "ads7846",
 156                 .bus_num        = 2,
 157                 .chip_select    = 0,
 158                 .max_speed_hz   = 2500000,
 159                 .irq            = OMAP_GPIO_IRQ(15),
 160                 .platform_data  = &nokia770_ads7846_platform_data,
 161         },
 162 };
 163
 164
 165 /* assume no Mini-AB port */
 166
 167 static struct omap_usb_config nokia770_usb_config __initdata = {
 168         .otg            = 1,
 169         .register_host  = 1,
 170         .register_dev   = 1,
 171         .hmc_mode       = 16,
 172         .pins[0]        = 6,
 173 };
 174
 175 static struct omap_mmc_config nokia770_mmc_config __initdata = {
 176         .mmc[0] = {
 177                 .enabled        = 0,
 178                 .wire4          = 0,
 179                 .wp_pin         = -1,
 180                 .power_pin      = -1,
 181                 .switch_pin     = -1,
 182         },
 183         .mmc[1] = {
 184                 .enabled        = 0,
 185                 .wire4          = 0,
 186                 .wp_pin         = -1,
 187                 .power_pin      = -1,
 188                 .switch_pin     = -1,
 189         },
 190 };
 191
 192 static struct omap_board_config_kernel nokia770_config[] __initdata = {
 193         { OMAP_TAG_USB,         NULL },
 194         { OMAP_TAG_MMC,         &nokia770_mmc_config },
 195 };
 196
 197 #if     defined(CONFIG_OMAP_DSP)
 198 /*
 199  * audio power control
 200  */
 201 #define HEADPHONE_GPIO          14
 202 #define AMPLIFIER_CTRL_GPIO     58
 203
 204 static struct clk *dspxor_ck;
 205 static DECLARE_MUTEX(audio_pwr_sem);
 206 /*
 207  * audio_pwr_state
 208  * +--+-------------------------+---------------------------------------+
 209  * |-1|down                     |power-up request -> 0                  |
 210  * +--+-------------------------+---------------------------------------+
 211  * | 0|up                       |power-down(1) request -> 1             |
 212  * |  |                         |power-down(2) request -> (ignore)      |
 213  * +--+-------------------------+---------------------------------------+
 214  * | 1|up,                      |power-up request -> 0                  |
 215  * |  |received down(1) request |power-down(2) request -> -1            |
 216  * +--+-------------------------+---------------------------------------+
 217  */
 218 static int audio_pwr_state = -1;
 219
 220 /*
 221  * audio_pwr_up / down should be called under audio_pwr_sem
 222  */
 223 static void nokia770_audio_pwr_up(void)
 224 {
 225         clk_enable(dspxor_ck);
 226
 227         /* Turn on codec */
 228         aic23_power_up();
 229
 230         if (omap_get_gpio_datain(HEADPHONE_GPIO))
 231                 /* HP not connected, turn on amplifier */
 232                 omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
 233         else
 234                 /* HP connected, do not turn on amplifier */
 235                 printk("HP connected\n");
 236 }
 237
 238 static void codec_delayed_power_down(struct work_struct *work)
 239 {
 240         down(&audio_pwr_sem);
 241         if (audio_pwr_state == -1)
 242                 aic23_power_down();
 243         clk_disable(dspxor_ck);
 244         up(&audio_pwr_sem);
 245 }
 246
 247 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
 248
 249 static void nokia770_audio_pwr_down(void)
 250 {
 251         /* Turn off amplifier */
 252         omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
 253
 254         /* Turn off codec: schedule delayed work */
 255         schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
 256 }
 257
 258 static int
 259 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
 260 {
 261         down(&audio_pwr_sem);
 262         if (audio_pwr_state == -1)
 263                 nokia770_audio_pwr_up();
 264         /* force audio_pwr_state = 0, even if it was 1. */
 265         audio_pwr_state = 0;
 266         up(&audio_pwr_sem);
 267         return 0;
 268 }
 269
 270 static int
 271 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
 272 {
 273         down(&audio_pwr_sem);
 274         switch (stage) {
 275         case 1:
 276                 if (audio_pwr_state == 0)
 277                         audio_pwr_state = 1;
 278                 break;
 279         case 2:
 280                 if (audio_pwr_state == 1) {
 281                         nokia770_audio_pwr_down();
 282                         audio_pwr_state = -1;
 283                 }
 284                 break;
 285         }
 286         up(&audio_pwr_sem);
 287         return 0;
 288 }
 289
 290 static struct dsp_kfunc_device nokia770_audio_device = {
 291         .name    = "audio",
 292         .type    = DSP_KFUNC_DEV_TYPE_AUDIO,
 293         .enable  = nokia770_audio_pwr_up_request,
 294         .disable = nokia770_audio_pwr_down_request,
 295 };
 296
 297 static __init int omap_dsp_init(void)
 298 {
 299         int ret;
 300
 301         dspxor_ck = clk_get(0, "dspxor_ck");
 302         if (IS_ERR(dspxor_ck)) {
 303                 printk(KERN_ERR "couldn't acquire dspxor_ck\n");
 304                 return PTR_ERR(dspxor_ck);
 305         }
 306
 307         ret = dsp_kfunc_device_register(&nokia770_audio_device);
 308         if (ret) {
 309                 printk(KERN_ERR
 310                        "KFUNC device registration faild: %s\n",
 311                        nokia770_audio_device.name);
 312                 goto out;
 313         }
 314         return 0;
 315  out:
 316         return ret;
 317 }
 318 #else
 319 #define omap_dsp_init()         do {} while (0)
 320 #endif  /* CONFIG_OMAP_DSP */
 321
 322 static void __init omap_nokia770_init(void)
 323 {
 324         nokia770_config[0].data = &nokia770_usb_config;
 325
 326         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
 327         spi_register_board_info(nokia770_spi_board_info,
 328                                 ARRAY_SIZE(nokia770_spi_board_info));
 329         omap_board_config = nokia770_config;
 330         omap_board_config_size = ARRAY_SIZE(nokia770_config);
 331         omap_gpio_init();
 332         omap_serial_init();
 333         omap_register_i2c_bus(1, 100, NULL, 0);
 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