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/tc35892.h>
  23 #include <linux/input/matrix_keypad.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/arch.h>
  27
  28 #include <plat/pincfg.h>
  29 #include <plat/i2c.h>
  30 #include <plat/ske.h>
  31
  32 #include <mach/hardware.h>
  33 #include <mach/setup.h>
  34 #include <mach/devices.h>
  35 #include <mach/irqs.h>
  36
  37 #include "devices-db8500.h"
  38 #include "pins-db8500.h"
  39 #include "board-mop500.h"
  40
  41 static pin_cfg_t mop500_pins[] = {
  42         /* SSP0 */
  43         GPIO143_SSP0_CLK,
  44         GPIO144_SSP0_FRM,
  45         GPIO145_SSP0_RXD,
  46         GPIO146_SSP0_TXD,
  47
  48         /* I2C */
  49         GPIO147_I2C0_SCL,
  50         GPIO148_I2C0_SDA,
  51         GPIO16_I2C1_SCL,
  52         GPIO17_I2C1_SDA,
  53         GPIO10_I2C2_SDA,
  54         GPIO11_I2C2_SCL,
  55         GPIO229_I2C3_SDA,
  56         GPIO230_I2C3_SCL,
  57
  58         /* SKE keypad */
  59         GPIO153_KP_I7,
  60         GPIO154_KP_I6,
  61         GPIO155_KP_I5,
  62         GPIO156_KP_I4,
  63         GPIO157_KP_O7,
  64         GPIO158_KP_O6,
  65         GPIO159_KP_O5,
  66         GPIO160_KP_O4,
  67         GPIO161_KP_I3,
  68         GPIO162_KP_I2,
  69         GPIO163_KP_I1,
  70         GPIO164_KP_I0,
  71         GPIO165_KP_O3,
  72         GPIO166_KP_O2,
  73         GPIO167_KP_O1,
  74         GPIO168_KP_O0,
  75
  76         GPIO217_GPIO,           /* GPIO_EXP_INT */
  77 };
  78
  79 static void ab4500_spi_cs_control(u32 command)
  80 {
  81         /* set the FRM signal, which is CS  - TODO */
  82 }
  83
  84 struct pl022_config_chip ab4500_chip_info = {
  85         .com_mode = INTERRUPT_TRANSFER,
  86         .iface = SSP_INTERFACE_MOTOROLA_SPI,
  87         /* we can act as master only */
  88         .hierarchy = SSP_MASTER,
  89         .slave_tx_disable = 0,
  90         .rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
  91         .tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
  92         .cs_control = ab4500_spi_cs_control,
  93 };
  94
  95 static struct ab8500_platform_data ab8500_platdata = {
  96         .irq_base       = MOP500_AB8500_IRQ_BASE,
  97 };
  98
  99 static struct resource ab8500_resources[] = {
 100         [0] = {
 101                 .start = IRQ_AB8500,
 102                 .end = IRQ_AB8500,
 103                 .flags = IORESOURCE_IRQ
 104         }
 105 };
 106
 107 struct platform_device ab8500_device = {
 108         .name = "ab8500-i2c",
 109         .id = 0,
 110         .dev = {
 111                 .platform_data = &ab8500_platdata,
 112         },
 113         .num_resources = 1,
 114         .resource = ab8500_resources,
 115 };
 116
 117 static struct spi_board_info ab8500_spi_devices[] = {
 118         {
 119                 .modalias = "ab8500-spi",
 120                 .controller_data = &ab4500_chip_info,
 121                 .platform_data = &ab8500_platdata,
 122                 .max_speed_hz = 12000000,
 123                 .bus_num = 0,
 124                 .chip_select = 0,
 125                 .mode = SPI_MODE_3,
 126                 .irq = IRQ_DB8500_AB8500,
 127         },
 128 };
 129
 130 static struct pl022_ssp_controller ssp0_platform_data = {
 131         .bus_id = 0,
 132         /* pl022 not yet supports dma */
 133         .enable_dma = 0,
 134         /* on this platform, gpio 31,142,144,214 &
 135          * 224 are connected as chip selects
 136          */
 137         .num_chipselect = 5,
 138 };
 139
 140 /*
 141  * TC35892
 142  */
 143
 144 static void mop500_tc35892_init(struct tc35892 *tc35892, unsigned int base)
 145 {
 146         mop500_sdi_tc35892_init();
 147 }
 148
 149 static struct tc35892_gpio_platform_data mop500_tc35892_gpio_data = {
 150         .gpio_base      = MOP500_EGPIO(0),
 151         .setup          = mop500_tc35892_init,
 152 };
 153
 154 static struct tc35892_platform_data mop500_tc35892_data = {
 155         .gpio           = &mop500_tc35892_gpio_data,
 156         .irq_base       = MOP500_EGPIO_IRQ_BASE,
 157 };
 158
 159 static struct i2c_board_info mop500_i2c0_devices[] = {
 160         {
 161                 I2C_BOARD_INFO("tc35892", 0x42),
 162                 .irq            = NOMADIK_GPIO_TO_IRQ(217),
 163                 .platform_data  = &mop500_tc35892_data,
 164         },
 165 };
 166
 167 #define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
 168 static struct nmk_i2c_controller u8500_i2c##id##_data = { \
 169         /*                              \
 170          * slave data setup time, which is      \
 171          * 250 ns,100ns,10ns which is 14,6,2    \
 172          * respectively for a 48 Mhz    \
 173          * i2c clock                    \
 174          */                             \
 175         .slsu           = _slsu,        \
 176         /* Tx FIFO threshold */         \
 177         .tft            = _tft,         \
 178         /* Rx FIFO threshold */         \
 179         .rft            = _rft,         \
 180         /* std. mode operation */       \
 181         .clk_freq       = clk,          \
 182         .sm             = _sm,          \
 183 }
 184
 185 /*
 186  * The board uses 4 i2c controllers, initialize all of
 187  * them with slave data setup time of 250 ns,
 188  * Tx & Rx FIFO threshold values as 1 and standard
 189  * mode of operation
 190  */
 191 U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
 192 U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
 193 U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
 194 U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
 195
 196 static void __init mop500_i2c_init(void)
 197 {
 198         db8500_add_i2c0(&u8500_i2c0_data);
 199         db8500_add_i2c1(&u8500_i2c1_data);
 200         db8500_add_i2c2(&u8500_i2c2_data);
 201         db8500_add_i2c3(&u8500_i2c3_data);
 202 }
 203
 204 static const unsigned int ux500_keymap[] = {
 205         KEY(2, 5, KEY_END),
 206         KEY(4, 1, KEY_POWER),
 207         KEY(3, 5, KEY_VOLUMEDOWN),
 208         KEY(1, 3, KEY_3),
 209         KEY(5, 2, KEY_RIGHT),
 210         KEY(5, 0, KEY_9),
 211
 212         KEY(0, 5, KEY_MENU),
 213         KEY(7, 6, KEY_ENTER),
 214         KEY(4, 5, KEY_0),
 215         KEY(6, 7, KEY_2),
 216         KEY(3, 4, KEY_UP),
 217         KEY(3, 3, KEY_DOWN),
 218
 219         KEY(6, 4, KEY_SEND),
 220         KEY(6, 2, KEY_BACK),
 221         KEY(4, 2, KEY_VOLUMEUP),
 222         KEY(5, 5, KEY_1),
 223         KEY(4, 3, KEY_LEFT),
 224         KEY(3, 2, KEY_7),
 225 };
 226
 227 static const struct matrix_keymap_data ux500_keymap_data = {
 228         .keymap         = ux500_keymap,
 229         .keymap_size    = ARRAY_SIZE(ux500_keymap),
 230 };
 231
 232 /*
 233  * Nomadik SKE keypad
 234  */
 235 #define ROW_PIN_I0      164
 236 #define ROW_PIN_I1      163
 237 #define ROW_PIN_I2      162
 238 #define ROW_PIN_I3      161
 239 #define ROW_PIN_I4      156
 240 #define ROW_PIN_I5      155
 241 #define ROW_PIN_I6      154
 242 #define ROW_PIN_I7      153
 243 #define COL_PIN_O0      168
 244 #define COL_PIN_O1      167
 245 #define COL_PIN_O2      166
 246 #define COL_PIN_O3      165
 247 #define COL_PIN_O4      160
 248 #define COL_PIN_O5      159
 249 #define COL_PIN_O6      158
 250 #define COL_PIN_O7      157
 251
 252 #define SKE_KPD_MAX_ROWS        8
 253 #define SKE_KPD_MAX_COLS        8
 254
 255 static int ske_kp_rows[] = {
 256         ROW_PIN_I0, ROW_PIN_I1, ROW_PIN_I2, ROW_PIN_I3,
 257         ROW_PIN_I4, ROW_PIN_I5, ROW_PIN_I6, ROW_PIN_I7,
 258 };
 259
 260 /*
 261  * ske_set_gpio_row: request and set gpio rows
 262  */
 263 static int ske_set_gpio_row(int gpio)
 264 {
 265         int ret;
 266
 267         ret = gpio_request(gpio, "ske-kp");
 268         if (ret < 0) {
 269                 pr_err("ske_set_gpio_row: gpio request failed\n");
 270                 return ret;
 271         }
 272
 273         ret = gpio_direction_output(gpio, 1);
 274         if (ret < 0) {
 275                 pr_err("ske_set_gpio_row: gpio direction failed\n");
 276                 gpio_free(gpio);
 277         }
 278
 279         return ret;
 280 }
 281
 282 /*
 283  * ske_kp_init - enable the gpio configuration
 284  */
 285 static int ske_kp_init(void)
 286 {
 287         int ret, i;
 288
 289         for (i = 0; i < SKE_KPD_MAX_ROWS; i++) {
 290                 ret = ske_set_gpio_row(ske_kp_rows[i]);
 291                 if (ret < 0) {
 292                         pr_err("ske_kp_init: failed init\n");
 293                         return ret;
 294                 }
 295         }
 296
 297         return 0;
 298 }
 299
 300 static struct ske_keypad_platform_data ske_keypad_board = {
 301         .init           = ske_kp_init,
 302         .keymap_data    = &ux500_keymap_data,
 303         .no_autorepeat  = true,
 304         .krow           = SKE_KPD_MAX_ROWS,     /* 8x8 matrix */
 305         .kcol           = SKE_KPD_MAX_COLS,
 306         .debounce_ms    = 40,                   /* in millsecs */
 307 };
 308
 309
 310
 311 /* add any platform devices here - TODO */
 312 static struct platform_device *platform_devs[] __initdata = {
 313         &ux500_ske_keypad_device,
 314 };
 315
 316 static void __init mop500_spi_init(void)
 317 {
 318         db8500_add_ssp0(&ssp0_platform_data);
 319 }
 320
 321 static void __init mop500_uart_init(void)
 322 {
 323         db8500_add_uart0();
 324         db8500_add_uart1();
 325         db8500_add_uart2();
 326 }
 327
 328 static void __init u8500_init_machine(void)
 329 {
 330         u8500_init_devices();
 331
 332         nmk_config_pins(mop500_pins, ARRAY_SIZE(mop500_pins));
 333
 334         ux500_ske_keypad_device.dev.platform_data = &ske_keypad_board;
 335         platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
 336
 337         mop500_i2c_init();
 338         mop500_sdi_init();
 339         mop500_spi_init();
 340         mop500_uart_init();
 341
 342         /* If HW is early drop (ED) or V1.0 then use SPI to access AB8500 */
 343         if (cpu_is_u8500ed() || cpu_is_u8500v10())
 344                 spi_register_board_info(ab8500_spi_devices,
 345                         ARRAY_SIZE(ab8500_spi_devices));
 346         else /* If HW is v.1.1 or later use I2C to access AB8500 */
 347                 platform_device_register(&ab8500_device);
 348
 349         i2c_register_board_info(0, mop500_i2c0_devices,
 350                                 ARRAY_SIZE(mop500_i2c0_devices));
 351 }
 352
 353 MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
 354         /* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
 355         .boot_params    = 0x100,
 356         .map_io         = u8500_map_io,
 357         .init_irq       = ux500_init_irq,
 358         /* we re-use nomadik timer here */
 359         .timer          = &ux500_timer,
 360         .init_machine   = u8500_init_machine,
 361 MACHINE_END