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 static void __init omap_nokia770_init_irq(void)
  36 {
  37         /* On Nokia 770, the SleepX signal is masked with an
  38          * MPUIO line by default.  It has to be unmasked for it
  39          * to become functional */
  40
  41         /* SleepX mask direction */
  42         omap_writew((omap_readw(0xfffb5008) & ~2), 0xfffb5008);
  43         /* Unmask SleepX signal */
  44         omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004);
  45
  46         omap1_init_common_hw();
  47         omap_init_irq();
  48 }
  49
  50 static int nokia770_keymap[] = {
  51         KEY(0, 1, GROUP_0 | KEY_UP),
  52         KEY(0, 2, GROUP_1 | KEY_F5),
  53         KEY(1, 0, GROUP_0 | KEY_LEFT),
  54         KEY(1, 1, GROUP_0 | KEY_ENTER),
  55         KEY(1, 2, GROUP_0 | KEY_RIGHT),
  56         KEY(2, 0, GROUP_1 | KEY_ESC),
  57         KEY(2, 1, GROUP_0 | KEY_DOWN),
  58         KEY(2, 2, GROUP_1 | KEY_F4),
  59         KEY(3, 0, GROUP_2 | KEY_F7),
  60         KEY(3, 1, GROUP_2 | KEY_F8),
  61         KEY(3, 2, GROUP_2 | KEY_F6),
  62         0
  63 };
  64
  65 static struct resource nokia770_kp_resources[] = {
  66         [0] = {
  67                 .start  = INT_KEYBOARD,
  68                 .end    = INT_KEYBOARD,
  69                 .flags  = IORESOURCE_IRQ,
  70         },
  71 };
  72
  73 static struct omap_kp_platform_data nokia770_kp_data = {
  74         .rows           = 8,
  75         .cols           = 8,
  76         .keymap         = nokia770_keymap,
  77         .keymapsize     = ARRAY_SIZE(nokia770_keymap),
  78         .delay          = 4,
  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 /*
 155  * audio power control
 156  */
 157 #define HEADPHONE_GPIO          14
 158 #define AMPLIFIER_CTRL_GPIO     58
 159
 160 static struct clk *dspxor_ck;
 161 static DECLARE_MUTEX(audio_pwr_sem);
 162 /*
 163  * audio_pwr_state
 164  * +--+-------------------------+---------------------------------------+
 165  * |-1|down                     |power-up request -> 0                  |
 166  * +--+-------------------------+---------------------------------------+
 167  * | 0|up                       |power-down(1) request -> 1             |
 168  * |  |                         |power-down(2) request -> (ignore)      |
 169  * +--+-------------------------+---------------------------------------+
 170  * | 1|up,                      |power-up request -> 0                  |
 171  * |  |received down(1) request |power-down(2) request -> -1            |
 172  * +--+-------------------------+---------------------------------------+
 173  */
 174 static int audio_pwr_state = -1;
 175
 176 /*
 177  * audio_pwr_up / down should be called under audio_pwr_sem
 178  */
 179 static void nokia770_audio_pwr_up(void)
 180 {
 181         clk_enable(dspxor_ck);
 182
 183         /* Turn on codec */
 184         tlv320aic23_power_up();
 185
 186         if (omap_get_gpio_datain(HEADPHONE_GPIO))
 187                 /* HP not connected, turn on amplifier */
 188                 omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
 189         else
 190                 /* HP connected, do not turn on amplifier */
 191                 printk("HP connected\n");
 192 }
 193
 194 static void codec_delayed_power_down(struct work_struct *work)
 195 {
 196         down(&audio_pwr_sem);
 197         if (audio_pwr_state == -1)
 198                 tlv320aic23_power_down();
 199         clk_disable(dspxor_ck);
 200         up(&audio_pwr_sem);
 201 }
 202
 203 static DECLARE_DELAYED_WORK(codec_power_down_work, codec_delayed_power_down);
 204
 205 static void nokia770_audio_pwr_down(void)
 206 {
 207         /* Turn off amplifier */
 208         omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
 209
 210         /* Turn off codec: schedule delayed work */
 211         schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
 212 }
 213
 214 void nokia770_audio_pwr_up_request(int stage)
 215 {
 216         down(&audio_pwr_sem);
 217         if (audio_pwr_state == -1)
 218                 nokia770_audio_pwr_up();
 219         /* force audio_pwr_state = 0, even if it was 1. */
 220         audio_pwr_state = 0;
 221         up(&audio_pwr_sem);
 222 }
 223
 224 void nokia770_audio_pwr_down_request(int stage)
 225 {
 226         down(&audio_pwr_sem);
 227         switch (stage) {
 228         case 1:
 229                 if (audio_pwr_state == 0)
 230                         audio_pwr_state = 1;
 231                 break;
 232         case 2:
 233                 if (audio_pwr_state == 1) {
 234                         nokia770_audio_pwr_down();
 235                         audio_pwr_state = -1;
 236                 }
 237                 break;
 238         }
 239         up(&audio_pwr_sem);
 240 }
 241
 242 static void __init omap_nokia770_init(void)
 243 {
 244         nokia770_config[0].data = &nokia770_usb_config;
 245
 246         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
 247         spi_register_board_info(nokia770_spi_board_info,
 248                                 ARRAY_SIZE(nokia770_spi_board_info));
 249         omap_board_config = nokia770_config;
 250         omap_board_config_size = ARRAY_SIZE(nokia770_config);
 251         omap_serial_init();
 252         omap_dsp_audio_pwr_up_request = nokia770_audio_pwr_up_request;
 253         omap_dsp_audio_pwr_down_request = nokia770_audio_pwr_down_request;
 254         dspxor_ck = clk_get(0, "dspxor_ck");
 255 }
 256
 257 static void __init omap_nokia770_map_io(void)
 258 {
 259         omap1_map_common_io();
 260 }
 261
 262 MACHINE_START(NOKIA770, "Nokia 770")
 263         .phys_io        = 0xfff00000,
 264         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 265         .boot_params    = 0x10000100,
 266         .map_io         = omap_nokia770_map_io,
 267         .init_irq       = omap_nokia770_init_irq,
 268         .init_machine   = omap_nokia770_init,
 269         .timer          = &omap_timer,
 270 MACHINE_END