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
  20 #include <asm/hardware.h>
  21 #include <asm/mach-types.h>
  22 #include <asm/mach/arch.h>
  23 #include <asm/mach/map.h>
  24
  25 #include <asm/arch/gpio.h>
  26 #include <asm/arch/mux.h>
  27 #include <asm/arch/usb.h>
  28 #include <asm/arch/board.h>
  29 #include <asm/arch/keypad.h>
  30 #include <asm/arch/common.h>
  31 #include <asm/arch/dsp_common.h>
  32 #include <asm/arch/aic23.h>
  33 #include <asm/arch/gpio.h>
  34
  35 #include "../plat-omap/dsp/dsp_common.h"
  36
  37 static void __init omap_nokia770_init_irq(void)
  38 {
  39         /* On Nokia 770, the SleepX signal is masked with an
  40          * MPUIO line by default.  It has to be unmasked for it
  41          * to become functional */
  42
  43         /* SleepX mask direction */
  44         omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
  45         /* Unmask SleepX signal */
  46         omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
  47
  48         omap1_init_common_hw();
  49         omap_init_irq();
  50 }
  51
  52 static int nokia770_keymap[] = {
  53         KEY(0, 1, GROUP_0 | KEY_UP),
  54         KEY(0, 2, GROUP_1 | KEY_F5),
  55         KEY(1, 0, GROUP_0 | KEY_LEFT),
  56         KEY(1, 1, GROUP_0 | KEY_ENTER),
  57         KEY(1, 2, GROUP_0 | KEY_RIGHT),
  58         KEY(2, 0, GROUP_1 | KEY_ESC),
  59         KEY(2, 1, GROUP_0 | KEY_DOWN),
  60         KEY(2, 2, GROUP_1 | KEY_F4),
  61         KEY(3, 0, GROUP_2 | KEY_F7),
  62         KEY(3, 1, GROUP_2 | KEY_F8),
  63         KEY(3, 2, GROUP_2 | KEY_F6),
  64         0
  65 };
  66
  67 static struct resource nokia770_kp_resources[] = {
  68         [0] = {
  69                 .start  = INT_KEYBOARD,
  70                 .end    = INT_KEYBOARD,
  71                 .flags  = IORESOURCE_IRQ,
  72         },
  73 };
  74
  75 static struct omap_kp_platform_data nokia770_kp_data = {
  76         .rows   = 8,
  77         .cols   = 8,
  78         .keymap = nokia770_keymap
  79 };
  80
  81 static struct platform_device nokia770_kp_device = {
  82         .name           = "omap-keypad",
  83         .id             = -1,
  84         .dev            = {
  85                 .platform_data = &nokia770_kp_data,
  86         },
  87         .num_resources  = ARRAY_SIZE(nokia770_kp_resources),
  88         .resource       = nokia770_kp_resources,
  89 };
  90
  91 static struct platform_device *nokia770_devices[] __initdata = {
  92         &nokia770_kp_device,
  93 };
  94
  95 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
  96         .x_max          = 0x0fff,
  97         .y_max          = 0x0fff,
  98         .x_plate_ohms   = 180,
  99         .pressure_max   = 255,
 100         .debounce_max   = 10,
 101         .debounce_tol   = 3,
 102 };
 103
 104 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
 105         [0] = {
 106                 .modalias       = "lcd_lph8923",
 107                 .bus_num        = 2,
 108                 .chip_select    = 3,
 109                 .max_speed_hz   = 12000000,
 110         },
 111         [1] = {
 112                 .modalias       = "ads7846",
 113                 .bus_num        = 2,
 114                 .chip_select    = 0,
 115                 .max_speed_hz   = 2500000,
 116                 .irq            = OMAP_GPIO_IRQ(15),
 117                 .platform_data  = &nokia770_ads7846_platform_data,
 118         },
 119 };
 120
 121
 122 /* assume no Mini-AB port */
 123
 124 static struct omap_usb_config nokia770_usb_config __initdata = {
 125         .otg            = 1,
 126         .register_host  = 1,
 127         .register_dev   = 1,
 128         .hmc_mode       = 16,
 129         .pins[0]        = 6,
 130 };
 131
 132 static struct omap_mmc_config nokia770_mmc_config __initdata = {
 133         .mmc[0] = {
 134                 .enabled        = 0,
 135                 .wire4          = 0,
 136                 .wp_pin         = -1,
 137                 .power_pin      = -1,
 138                 .switch_pin     = -1,
 139         },
 140         .mmc[1] = {
 141                 .enabled        = 0,
 142                 .wire4          = 0,
 143                 .wp_pin         = -1,
 144                 .power_pin      = -1,
 145                 .switch_pin     = -1,
 146         },
 147 };
 148
 149 static struct omap_board_config_kernel nokia770_config[] = {
 150         { OMAP_TAG_USB,         NULL },
 151         { OMAP_TAG_MMC,         &nokia770_mmc_config },
 152 };
 153
 154 #if     defined(CONFIG_OMAP_DSP)
 155 /*
 156  * audio power control
 157  */
 158 #define HEADPHONE_GPIO          14
 159 #define AMPLIFIER_CTRL_GPIO     58
 160
 161 static struct clk *dspxor_ck;
 162 static DECLARE_MUTEX(audio_pwr_sem);
 163 /*
 164  * audio_pwr_state
 165  * +--+-------------------------+---------------------------------------+
 166  * |-1|down                     |power-up request -> 0                  |
 167  * +--+-------------------------+---------------------------------------+
 168  * | 0|up                       |power-down(1) request -> 1             |
 169  * |  |                         |power-down(2) request -> (ignore)      |
 170  * +--+-------------------------+---------------------------------------+
 171  * | 1|up,                      |power-up request -> 0                  |
 172  * |  |received down(1) request |power-down(2) request -> -1            |
 173  * +--+-------------------------+---------------------------------------+
 174  */
 175 static int audio_pwr_state = -1;
 176
 177 /*
 178  * audio_pwr_up / down should be called under audio_pwr_sem
 179  */
 180 static void nokia770_audio_pwr_up(void)
 181 {
 182         clk_enable(dspxor_ck);
 183
 184         /* Turn on codec */
 185         aic23_power_up();
 186
 187         if (omap_get_gpio_datain(HEADPHONE_GPIO))
 188                 /* HP not connected, turn on amplifier */
 189                 omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
 190         else
 191                 /* HP connected, do not turn on amplifier */
 192                 printk("HP connected\n");
 193 }
 194
 195 static void codec_delayed_power_down(void *arg)
 196 {
 197         down(&audio_pwr_sem);
 198         if (audio_pwr_state == -1)
 199                 aic23_power_down();
 200         clk_disable(dspxor_ck);
 201         up(&audio_pwr_sem);
 202 }
 203
 204 static DECLARE_WORK(codec_power_down_work, codec_delayed_power_down, NULL);
 205
 206 static void nokia770_audio_pwr_down(void)
 207 {
 208         /* Turn off amplifier */
 209         omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
 210
 211         /* Turn off codec: schedule delayed work */
 212         schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
 213 }
 214
 215 static void
 216 nokia770_audio_pwr_up_request(struct dsp_kfunc_device *kdev, int stage)
 217 {
 218         down(&audio_pwr_sem);
 219         if (audio_pwr_state == -1)
 220                 nokia770_audio_pwr_up();
 221         /* force audio_pwr_state = 0, even if it was 1. */
 222         audio_pwr_state = 0;
 223         up(&audio_pwr_sem);
 224 }
 225
 226 static void
 227 nokia770_audio_pwr_down_request(struct dsp_kfunc_device *kdev, int stage)
 228 {
 229         down(&audio_pwr_sem);
 230         switch (stage) {
 231         case 1:
 232                 if (audio_pwr_state == 0)
 233                         audio_pwr_state = 1;
 234                 break;
 235         case 2:
 236                 if (audio_pwr_state == 1) {
 237                         nokia770_audio_pwr_down();
 238                         audio_pwr_state = -1;
 239                 }
 240                 break;
 241         }
 242         up(&audio_pwr_sem);
 243 }
 244
 245 static struct dsp_kfunc_device nokia770_audio_device = {
 246         .name    = "audio",
 247         .type    = DSP_KFUNC_DEV_TYPE_AUDIO,
 248         .enable  = nokia770_audio_pwr_up_request,
 249         .disable = nokia770_audio_pwr_down_request,
 250 };
 251
 252 static __init int omap_dsp_init(void)
 253 {
 254         int ret;
 255
 256         dspxor_ck = clk_get(0, "dspxor_ck");
 257         if (IS_ERR(dspxor_ck)) {
 258                 printk(KERN_ERR "couldn't acquire dspxor_ck\n");
 259                 return PTR_ERR(dspxor_ck);
 260         }
 261
 262         ret = dsp_kfunc_device_register(&nokia770_audio_device);
 263         if (ret) {
 264                 printk(KERN_ERR
 265                        "KFUNC device registration faild: %s\n",
 266                        dsp_audio_device.name);
 267                 goto out;
 268         }
 269         return 0;
 270  out:
 271         return ret;
 272 }
 273 #endif  /* CONFIG_OMAP_DSP */
 274
 275 static void __init omap_nokia770_init(void)
 276 {
 277         nokia770_config[0].data = &nokia770_usb_config;
 278
 279         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
 280         spi_register_board_info(nokia770_spi_board_info,
 281                                 ARRAY_SIZE(nokia770_spi_board_info));
 282         omap_board_config = nokia770_config;
 283         omap_board_config_size = ARRAY_SIZE(nokia770_config);
 284         omap_serial_init();
 285         omap_dsp_init();
 286 }
 287
 288 static void __init omap_nokia770_map_io(void)
 289 {
 290         omap1_map_common_io();
 291 }
 292
 293 MACHINE_START(NOKIA770, "Nokia 770")
 294         .phys_io        = 0xfff00000,
 295         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 296         .boot_params    = 0x10000100,
 297         .map_io         = omap_nokia770_map_io,
 298         .init_irq       = omap_nokia770_init_irq,
 299         .init_machine   = omap_nokia770_init,
 300         .timer          = &omap_timer,
 301 MACHINE_END