arch/arm/mach-ux500/board-mop500.c

   1 /*
   2  * Copyright (C) 2008-2009 ST-Ericsson
   3  *
   4  * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
   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/interrupt.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/io.h>
  16 #include <linux/i2c.h>
  17 #include <linux/gpio.h>
  18 #include <linux/amba/bus.h>
  19 #include <linux/amba/pl022.h>
  20 #include <linux/spi/spi.h>
  21 #include <linux/mfd/ab8500.h>
  22 #include <linux/mfd/tc3589x.h>
  23
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26
  27 #include <plat/pincfg.h>
  28 #include <plat/i2c.h>
  29 #include <plat/ske.h>
  30
  31 #include <mach/hardware.h>
  32 #include <mach/setup.h>
  33 #include <mach/devices.h>
  34 #include <mach/irqs.h>
  35
  36 #include "devices-db8500.h"
  37 #include "pins-db8500.h"
  38 #include "board-mop500.h"
  39
  40 static pin_cfg_t mop500_pins[] = {
  41         /* SSP0 */
  42         GPIO143_SSP0_CLK,
  43         GPIO144_SSP0_FRM,
  44         GPIO145_SSP0_RXD,
  45         GPIO146_SSP0_TXD,
  46
  47         /* I2C */
  48         GPIO147_I2C0_SCL,
  49         GPIO148_I2C0_SDA,
  50         GPIO16_I2C1_SCL,
  51         GPIO17_I2C1_SDA,
  52         GPIO10_I2C2_SDA,
  53         GPIO11_I2C2_SCL,
  54         GPIO229_I2C3_SDA,
  55         GPIO230_I2C3_SCL,
  56
  57         /* SKE keypad */
  58         GPIO153_KP_I7,
  59         GPIO154_KP_I6,
  60         GPIO155_KP_I5,
  61         GPIO156_KP_I4,
  62         GPIO157_KP_O7,
  63         GPIO158_KP_O6,
  64         GPIO159_KP_O5,
  65         GPIO160_KP_O4,
  66         GPIO161_KP_I3,
  67         GPIO162_KP_I2,
  68         GPIO163_KP_I1,
  69         GPIO164_KP_I0,
  70         GPIO165_KP_O3,
  71         GPIO166_KP_O2,
  72         GPIO167_KP_O1,
  73         GPIO168_KP_O0,
  74
  75         GPIO217_GPIO,           /* GPIO_EXP_INT */
  76 };
  77
  78 static struct ab8500_platform_data ab8500_platdata = {
  79         .irq_base       = MOP500_AB8500_IRQ_BASE,
  80 };
  81
  82 static struct resource ab8500_resources[] = {
  83         [0] = {
  84                 .start  = IRQ_DB8500_AB8500,
  85                 .end    = IRQ_DB8500_AB8500,
  86                 .flags  = IORESOURCE_IRQ
  87         }
  88 };
  89
  90 struct platform_device ab8500_device = {
  91         .name = "ab8500-i2c",
  92         .id = 0,
  93         .dev = {
  94                 .platform_data = &ab8500_platdata,
  95         },
  96         .num_resources = 1,
  97         .resource = ab8500_resources,
  98 };
  99
 100 static struct pl022_ssp_controller ssp0_platform_data = {
 101         .bus_id = 0,
 102         /* pl022 not yet supports dma */
 103         .enable_dma = 0,
 104         /* on this platform, gpio 31,142,144,214 &
 105          * 224 are connected as chip selects
 106          */
 107         .num_chipselect = 5,
 108 };
 109
 110 /*
 111  * TC35892
 112  */
 113
 114 static void mop500_tc35892_init(struct tc3589x *tc3589x, unsigned int base)
 115 {
 116         mop500_sdi_tc35892_init();
 117 }
 118
 119 static struct tc3589x_gpio_platform_data mop500_tc35892_gpio_data = {
 120         .gpio_base      = MOP500_EGPIO(0),
 121         .setup          = mop500_tc35892_init,
 122 };
 123
 124 static struct tc3589x_platform_data mop500_tc35892_data = {
 125         .block          = TC3589x_BLOCK_GPIO,
 126         .gpio           = &mop500_tc35892_gpio_data,
 127         .irq_base       = MOP500_EGPIO_IRQ_BASE,
 128 };
 129
 130 static struct i2c_board_info mop500_i2c0_devices[] = {
 131         {
 132                 I2C_BOARD_INFO("tc3589x", 0x42),
 133                 .irq            = NOMADIK_GPIO_TO_IRQ(217),
 134                 .platform_data  = &mop500_tc35892_data,
 135         },
 136 };
 137
 138 #define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
 139 static struct nmk_i2c_controller u8500_i2c##id##_data = { \
 140         /*                              \
 141          * slave data setup time, which is      \
 142          * 250 ns,100ns,10ns which is 14,6,2    \
 143          * respectively for a 48 Mhz    \
 144          * i2c clock                    \
 145          */                             \
 146         .slsu           = _slsu,        \
 147         /* Tx FIFO threshold */         \
 148         .tft            = _tft,         \
 149         /* Rx FIFO threshold */         \
 150         .rft            = _rft,         \
 151         /* std. mode operation */       \
 152         .clk_freq       = clk,          \
 153         .sm             = _sm,          \
 154 }
 155
 156 /*
 157  * The board uses 4 i2c controllers, initialize all of
 158  * them with slave data setup time of 250 ns,
 159  * Tx & Rx FIFO threshold values as 1 and standard
 160  * mode of operation
 161  */
 162 U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
 163 U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
 164 U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
 165 U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
 166
 167 static void __init mop500_i2c_init(void)
 168 {
 169         db8500_add_i2c0(&u8500_i2c0_data);
 170         db8500_add_i2c1(&u8500_i2c1_data);
 171         db8500_add_i2c2(&u8500_i2c2_data);
 172         db8500_add_i2c3(&u8500_i2c3_data);
 173 }
 174
 175 static const unsigned int ux500_keymap[] = {
 176         KEY(2, 5, KEY_END),
 177         KEY(4, 1, KEY_POWER),
 178         KEY(3, 5, KEY_VOLUMEDOWN),
 179         KEY(1, 3, KEY_3),
 180         KEY(5, 2, KEY_RIGHT),
 181         KEY(5, 0, KEY_9),
 182
 183         KEY(0, 5, KEY_MENU),
 184         KEY(7, 6, KEY_ENTER),
 185         KEY(4, 5, KEY_0),
 186         KEY(6, 7, KEY_2),
 187         KEY(3, 4, KEY_UP),
 188         KEY(3, 3, KEY_DOWN),
 189
 190         KEY(6, 4, KEY_SEND),
 191         KEY(6, 2, KEY_BACK),
 192         KEY(4, 2, KEY_VOLUMEUP),
 193         KEY(5, 5, KEY_1),
 194         KEY(4, 3, KEY_LEFT),
 195         KEY(3, 2, KEY_7),
 196 };
 197
 198 static const struct matrix_keymap_data ux500_keymap_data = {
 199         .keymap         = ux500_keymap,
 200         .keymap_size    = ARRAY_SIZE(ux500_keymap),
 201 };
 202
 203 /*
 204  * Nomadik SKE keypad
 205  */
 206 #define ROW_PIN_I0      164
 207 #define ROW_PIN_I1      163
 208 #define ROW_PIN_I2      162
 209 #define ROW_PIN_I3      161
 210 #define ROW_PIN_I4      156
 211 #define ROW_PIN_I5      155
 212 #define ROW_PIN_I6      154
 213 #define ROW_PIN_I7      153
 214 #define COL_PIN_O0      168
 215 #define COL_PIN_O1      167
 216 #define COL_PIN_O2      166
 217 #define COL_PIN_O3      165
 218 #define COL_PIN_O4      160
 219 #define COL_PIN_O5      159
 220 #define COL_PIN_O6      158
 221 #define COL_PIN_O7      157
 222
 223 #define SKE_KPD_MAX_ROWS        8
 224 #define SKE_KPD_MAX_COLS        8
 225
 226 static int ske_kp_rows[] = {
 227         ROW_PIN_I0, ROW_PIN_I1, ROW_PIN_I2, ROW_PIN_I3,
 228         ROW_PIN_I4, ROW_PIN_I5, ROW_PIN_I6, ROW_PIN_I7,
 229 };
 230
 231 /*
 232  * ske_set_gpio_row: request and set gpio rows
 233  */
 234 static int ske_set_gpio_row(int gpio)
 235 {
 236         int ret;
 237
 238         ret = gpio_request(gpio, "ske-kp");
 239         if (ret < 0) {
 240                 pr_err("ske_set_gpio_row: gpio request failed\n");
 241                 return ret;
 242         }
 243
 244         ret = gpio_direction_output(gpio, 1);
 245         if (ret < 0) {
 246                 pr_err("ske_set_gpio_row: gpio direction failed\n");
 247                 gpio_free(gpio);
 248         }
 249
 250         return ret;
 251 }
 252
 253 /*
 254  * ske_kp_init - enable the gpio configuration
 255  */
 256 static int ske_kp_init(void)
 257 {
 258         int ret, i;
 259
 260         for (i = 0; i < SKE_KPD_MAX_ROWS; i++) {
 261                 ret = ske_set_gpio_row(ske_kp_rows[i]);
 262                 if (ret < 0) {
 263                         pr_err("ske_kp_init: failed init\n");
 264                         return ret;
 265                 }
 266         }
 267
 268         return 0;
 269 }
 270
 271 static struct ske_keypad_platform_data ske_keypad_board = {
 272         .init           = ske_kp_init,
 273         .keymap_data    = &ux500_keymap_data,
 274         .no_autorepeat  = true,
 275         .krow           = SKE_KPD_MAX_ROWS,     /* 8x8 matrix */
 276         .kcol           = SKE_KPD_MAX_COLS,
 277         .debounce_ms    = 40,                   /* in millsecs */
 278 };
 279
 280
 281
 282 /* add any platform devices here - TODO */
 283 static struct platform_device *platform_devs[] __initdata = {
 284         &ux500_ske_keypad_device,
 285 };
 286
 287 static void __init mop500_spi_init(void)
 288 {
 289         db8500_add_ssp0(&ssp0_platform_data);
 290 }
 291
 292 static void __init mop500_uart_init(void)
 293 {
 294         db8500_add_uart0();
 295         db8500_add_uart1();
 296         db8500_add_uart2();
 297 }
 298
 299 static void __init u8500_init_machine(void)
 300 {
 301         u8500_init_devices();
 302
 303         nmk_config_pins(mop500_pins, ARRAY_SIZE(mop500_pins));
 304
 305         platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
 306
 307         mop500_i2c_init();
 308         mop500_sdi_init();
 309         mop500_spi_init();
 310         mop500_uart_init();
 311
 312         platform_device_register(&ab8500_device);
 313
 314         i2c_register_board_info(0, mop500_i2c0_devices,
 315                                 ARRAY_SIZE(mop500_i2c0_devices));
 316 }
 317
 318 MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
 319         /* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
 320         .boot_params    = 0x100,
 321         .map_io         = u8500_map_io,
 322         .init_irq       = ux500_init_irq,
 323         /* we re-use nomadik timer here */
 324         .timer          = &ux500_timer,
 325         .init_machine   = u8500_init_machine,
 326 MACHINE_END