git.oblomov.eu Git - linux-2.6/blob - 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 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         .keymapsize     = ARRAY_SIZE(nokia770_keymap),
  80         .delay          = 4,
  81 };
  82
  83 static struct platform_device nokia770_kp_device = {
  84         .name           = "omap-keypad",
  85         .id             = -1,
  86         .dev            = {
  87                 .platform_data = &nokia770_kp_data,
  88         },
  89         .num_resources  = ARRAY_SIZE(nokia770_kp_resources),
  90         .resource       = nokia770_kp_resources,
  91 };
  92
  93 static struct platform_device *nokia770_devices[] __initdata = {
  94         &nokia770_kp_device,
  95 };
  96
  97 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
  98         .x_max          = 0x0fff,
  99         .y_max          = 0x0fff,
 100         .x_plate_ohms   = 180,
 101         .pressure_max   = 255,
 102         .debounce_max   = 10,
 103         .debounce_tol   = 3,
 104 };
 105
 106 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
 107         [0] = {
 108                 .modalias               = "lcd_mipid",
 109                 .bus_num        = 2,
 110                 .chip_select    = 3,
 111                 .max_speed_hz   = 12000000,
 112         },
 113         [1] = {
 114                 .modalias       = "ads7846",
 115                 .bus_num        = 2,
 116                 .chip_select    = 0,
 117                 .max_speed_hz   = 2500000,
 118                 .irq            = OMAP_GPIO_IRQ(15),
 119                 .platform_data  = &nokia770_ads7846_platform_data,
 120         },
 121 };
 122
 123
 124 /* assume no Mini-AB port */
 125
 126 static struct omap_usb_config nokia770_usb_config __initdata = {
 127         .otg            = 1,
 128         .register_host  = 1,
 129         .register_dev   = 1,
 130         .hmc_mode       = 16,
 131         .pins[0]        = 6,
 132 };
 133
 134 static struct omap_mmc_config nokia770_mmc_config __initdata = {
 135         .mmc[0] = {
 136                 .enabled        = 0,
 137                 .wire4          = 0,
 138                 .wp_pin         = -1,
 139                 .power_pin      = -1,
 140                 .switch_pin     = -1,
 141         },
 142         .mmc[1] = {
 143                 .enabled        = 0,
 144                 .wire4          = 0,
 145                 .wp_pin         = -1,
 146                 .power_pin      = -1,
 147                 .switch_pin     = -1,
 148         },
 149 };
 150
 151 static struct omap_board_config_kernel nokia770_config[] = {
 152         { OMAP_TAG_USB,         NULL },
 153         { OMAP_TAG_MMC,         &nokia770_mmc_config },
 154 };
 155
 156 /*
 157  * audio power control
 158  */
 159 #define HEADPHONE_GPIO          14
 160 #define AMPLIFIER_CTRL_GPIO     58
 161
 162 static struct clk *dspxor_ck;
 163 static DECLARE_MUTEX(audio_pwr_sem);
 164 /*
 165  * audio_pwr_state
 166  * +--+-------------------------+---------------------------------------+
 167  * |-1|down                     |power-up request -> 0                  |
 168  * +--+-------------------------+---------------------------------------+
 169  * | 0|up                       |power-down(1) request -> 1             |
 170  * |  |                         |power-down(2) request -> (ignore)      |
 171  * +--+-------------------------+---------------------------------------+
 172  * | 1|up,                      |power-up request -> 0                  |
 173  * |  |received down(1) request |power-down(2) request -> -1            |
 174  * +--+-------------------------+---------------------------------------+
 175  */
 176 static int audio_pwr_state = -1;
 177
 178 /*
 179  * audio_pwr_up / down should be called under audio_pwr_sem
 180  */
 181 static void nokia770_audio_pwr_up(void)
 182 {
 183         clk_enable(dspxor_ck);
 184
 185         /* Turn on codec */
 186         tlv320aic23_power_up();
 187
 188         if (omap_get_gpio_datain(HEADPHONE_GPIO))
 189                 /* HP not connected, turn on amplifier */
 190                 omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
 191         else
 192                 /* HP connected, do not turn on amplifier */
 193                 printk("HP connected\n");
 194 }
 195
 196 static void codec_delayed_power_down(struct work_struct *work)
 197 {
 198         down(&audio_pwr_sem);
 199         if (audio_pwr_state == -1)
 200                 tlv320aic23_power_down();
 201         clk_disable(dspxor_ck);
 202         up(&audio_pwr_sem);
 203 }
 204
 205 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
 206
 207 static void nokia770_audio_pwr_down(void)
 208 {
 209         /* Turn off amplifier */
 210         omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
 211
 212         /* Turn off codec: schedule delayed work */
 213         schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
 214 }
 215
 216 void nokia770_audio_pwr_up_request(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 void nokia770_audio_pwr_down_request(int stage)
 227 {
 228         down(&audio_pwr_sem);
 229         switch (stage) {
 230         case 1:
 231                 if (audio_pwr_state == 0)
 232                         audio_pwr_state = 1;
 233                 break;
 234         case 2:
 235                 if (audio_pwr_state == 1) {
 236                         nokia770_audio_pwr_down();
 237                         audio_pwr_state = -1;
 238                 }
 239                 break;
 240         }
 241         up(&audio_pwr_sem);
 242 }
 243
 244 static void __init omap_nokia770_init(void)
 245 {
 246         nokia770_config[0].data = &nokia770_usb_config;
 247
 248         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
 249         spi_register_board_info(nokia770_spi_board_info,
 250                                 ARRAY_SIZE(nokia770_spi_board_info));
 251         omap_board_config = nokia770_config;
 252         omap_board_config_size = ARRAY_SIZE(nokia770_config);
 253         omap_serial_init();
 254         omap_dsp_audio_pwr_up_request = nokia770_audio_pwr_up_request;
 255         omap_dsp_audio_pwr_down_request = nokia770_audio_pwr_down_request;
 256         dspxor_ck = clk_get(0, "dspxor_ck");
 257 }
 258
 259 static void __init omap_nokia770_map_io(void)
 260 {
 261         omap1_map_common_io();
 262 }
 263
 264 MACHINE_START(NOKIA770, "Nokia 770")
 265         .phys_io        = 0xfff00000,
 266         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 267         .boot_params    = 0x10000100,
 268         .map_io         = omap_nokia770_map_io,
 269         .init_irq       = omap_nokia770_init_irq,
 270         .init_machine   = omap_nokia770_init,
 271         .timer          = &omap_timer,
 272 MACHINE_END