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