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         omap1_init_common_hw();
  38         omap_init_irq();
  39 }
  40
  41 static int nokia770_keymap[] = {
  42         KEY(0, 1, GROUP_0 | KEY_UP),
  43         KEY(0, 2, GROUP_1 | KEY_F5),
  44         KEY(1, 0, GROUP_0 | KEY_LEFT),
  45         KEY(1, 1, GROUP_0 | KEY_ENTER),
  46         KEY(1, 2, GROUP_0 | KEY_RIGHT),
  47         KEY(2, 0, GROUP_1 | KEY_ESC),
  48         KEY(2, 1, GROUP_0 | KEY_DOWN),
  49         KEY(2, 2, GROUP_1 | KEY_F4),
  50         KEY(3, 0, GROUP_2 | KEY_F7),
  51         KEY(3, 1, GROUP_2 | KEY_F8),
  52         KEY(3, 2, GROUP_2 | KEY_F6),
  53         0
  54 };
  55
  56 static struct resource nokia770_kp_resources[] = {
  57         [0] = {
  58                 .start  = INT_KEYBOARD,
  59                 .end    = INT_KEYBOARD,
  60                 .flags  = IORESOURCE_IRQ,
  61         },
  62 };
  63
  64 static struct omap_kp_platform_data nokia770_kp_data = {
  65         .rows   = 8,
  66         .cols   = 8,
  67         .keymap = nokia770_keymap
  68 };
  69
  70 static struct platform_device nokia770_kp_device = {
  71         .name           = "omap-keypad",
  72         .id             = -1,
  73         .dev            = {
  74                 .platform_data = &nokia770_kp_data,
  75         },
  76         .num_resources  = ARRAY_SIZE(nokia770_kp_resources),
  77         .resource       = nokia770_kp_resources,
  78 };
  79
  80 static struct platform_device *nokia770_devices[] __initdata = {
  81         &nokia770_kp_device,
  82 };
  83
  84 static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = {
  85         .x_max          = 0x0fff,
  86         .y_max          = 0x0fff,
  87         .x_plate_ohms   = 120,
  88         .pressure_max   = 200,
  89         .debounce_max   = 10,
  90         .debounce_tol   = 3,
  91 };
  92
  93 static struct spi_board_info nokia770_spi_board_info[] __initdata = {
  94         [0] = {
  95                 .modalias       = "lcd_lph8923",
  96                 .bus_num        = 2,
  97                 .chip_select    = 3,
  98                 .max_speed_hz   = 12000000,
  99         },
 100         [1] = {
 101                 .modalias       = "ads7846",
 102                 .bus_num        = 2,
 103                 .chip_select    = 0,
 104                 .max_speed_hz   = 2500000,
 105                 .irq            = OMAP_GPIO_IRQ(15),
 106                 .platform_data  = &nokia770_ads7846_platform_data,
 107         },
 108 };
 109
 110
 111 /* assume no Mini-AB port */
 112
 113 static struct omap_usb_config nokia770_usb_config __initdata = {
 114         .otg            = 1,
 115         .register_host  = 1,
 116         .register_dev   = 1,
 117         .hmc_mode       = 16,
 118         .pins[0]        = 6,
 119 };
 120
 121 static struct omap_mmc_config nokia770_mmc_config __initdata = {
 122         .mmc[0] = {
 123                 .enabled        = 0,
 124                 .wire4          = 0,
 125                 .wp_pin         = -1,
 126                 .power_pin      = -1,
 127                 .switch_pin     = -1,
 128         },
 129         .mmc[1] = {
 130                 .enabled        = 0,
 131                 .wire4          = 0,
 132                 .wp_pin         = -1,
 133                 .power_pin      = -1,
 134                 .switch_pin     = -1,
 135         },
 136 };
 137
 138 static struct omap_board_config_kernel nokia770_config[] = {
 139         { OMAP_TAG_USB,         NULL },
 140         { OMAP_TAG_MMC,         &nokia770_mmc_config },
 141 };
 142
 143 /*
 144  * audio power control
 145  */
 146 #define HEADPHONE_GPIO          14
 147 #define AMPLIFIER_CTRL_GPIO     58
 148
 149 static struct clk *dspxor_ck;
 150 static DECLARE_MUTEX(audio_pwr_sem);
 151 /*
 152  * audio_pwr_state
 153  * +--+-------------------------+---------------------------------------+
 154  * |-1|down                     |power-up request -> 0                  |
 155  * +--+-------------------------+---------------------------------------+
 156  * | 0|up                       |power-down(1) request -> 1             |
 157  * |  |                         |power-down(2) request -> (ignore)      |
 158  * +--+-------------------------+---------------------------------------+
 159  * | 1|up,                      |power-up request -> 0                  |
 160  * |  |received down(1) request |power-down(2) request -> -1            |
 161  * +--+-------------------------+---------------------------------------+
 162  */
 163 static int audio_pwr_state = -1;
 164
 165 /*
 166  * audio_pwr_up / down should be called under audio_pwr_sem
 167  */
 168 static void nokia770_audio_pwr_up(void)
 169 {
 170         clk_enable(dspxor_ck);
 171
 172         /* Turn on codec */
 173         tlv320aic23_power_up();
 174
 175         if (omap_get_gpio_datain(HEADPHONE_GPIO))
 176                 /* HP not connected, turn on amplifier */
 177                 omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 1);
 178         else
 179                 /* HP connected, do not turn on amplifier */
 180                 printk("HP connected\n");
 181 }
 182
 183 static void codec_delayed_power_down(void *arg)
 184 {
 185         down(&audio_pwr_sem);
 186         if (audio_pwr_state == -1)
 187                 tlv320aic23_power_down();
 188         up(&audio_pwr_sem);
 189 }
 190
 191 static DECLARE_WORK(codec_power_down_work, codec_delayed_power_down, NULL);
 192
 193 static void nokia770_audio_pwr_down(void)
 194 {
 195         clk_disable(dspxor_ck);
 196
 197         /* Turn off amplifier */
 198         omap_set_gpio_dataout(AMPLIFIER_CTRL_GPIO, 0);
 199
 200         /* Turn off codec: schedule delayed work */
 201         schedule_delayed_work(&codec_power_down_work, HZ / 20); /* 50ms */
 202 }
 203
 204 void nokia770_audio_pwr_up_request(int stage)
 205 {
 206         down(&audio_pwr_sem);
 207         if (audio_pwr_state == -1)
 208                 nokia770_audio_pwr_up();
 209         /* force audio_pwr_state = 0, even if it was 1. */
 210         audio_pwr_state = 0;
 211         up(&audio_pwr_sem);
 212 }
 213
 214 void nokia770_audio_pwr_down_request(int stage)
 215 {
 216         down(&audio_pwr_sem);
 217         switch (stage) {
 218                 case 1:
 219                         if (audio_pwr_state == 0)
 220                                 audio_pwr_state = 1;
 221                         break;
 222                 case 2:
 223                         if (audio_pwr_state == 1) {
 224                                 nokia770_audio_pwr_down();
 225                                 audio_pwr_state = -1;
 226                         }
 227                         break;
 228         }
 229         up(&audio_pwr_sem);
 230 }
 231
 232 static void __init omap_nokia770_init(void)
 233 {
 234         nokia770_config[0].data = &nokia770_usb_config;
 235
 236         platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices));
 237         spi_register_board_info(nokia770_spi_board_info,
 238                                 ARRAY_SIZE(nokia770_spi_board_info));
 239         omap_board_config = nokia770_config;
 240         omap_board_config_size = ARRAY_SIZE(nokia770_config);
 241         omap_serial_init();
 242         omap_dsp_audio_pwr_up_request = nokia770_audio_pwr_up_request;
 243         omap_dsp_audio_pwr_down_request = nokia770_audio_pwr_down_request;
 244         dspxor_ck = clk_get(0, "dspxor_ck");
 245 }
 246
 247 static void __init omap_nokia770_map_io(void)
 248 {
 249         omap1_map_common_io();
 250 }
 251
 252 MACHINE_START(NOKIA770, "Nokia 770")
 253         .phys_io        = 0xfff00000,
 254         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 255         .boot_params    = 0x10000100,
 256         .map_io         = omap_nokia770_map_io,
 257         .init_irq       = omap_nokia770_init_irq,
 258         .init_machine   = omap_nokia770_init,
 259         .timer          = &omap_timer,
 260 MACHINE_END