linux/arch/avr32/boards/atngw100/mrmt.c
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   1/*
   2 * Board-specific setup code for Remote Media Terminal 1 (RMT1)
   3 * add-on board for the ATNGW100 Network Gateway
   4 *
   5 * Copyright (C) 2008 Mediama Technologies
   6 * Based on ATNGW100 Network Gateway (Copyright (C) Atmel)
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License version 2 as
  10 * published by the Free Software Foundation.
  11 */
  12#include <linux/gpio.h>
  13#include <linux/init.h>
  14#include <linux/irq.h>
  15#include <linux/linkage.h>
  16#include <linux/platform_device.h>
  17#include <linux/types.h>
  18#include <linux/fb.h>
  19#include <linux/leds.h>
  20#include <linux/input.h>
  21#include <linux/gpio_keys.h>
  22#include <linux/atmel_serial.h>
  23#include <linux/spi/spi.h>
  24#include <linux/spi/ads7846.h>
  25
  26#include <video/atmel_lcdc.h>
  27#include <sound/atmel-ac97c.h>
  28
  29#include <asm/delay.h>
  30#include <asm/io.h>
  31#include <asm/setup.h>
  32
  33#include <mach/at32ap700x.h>
  34#include <mach/board.h>
  35#include <mach/init.h>
  36#include <mach/portmux.h>
  37
  38/* Define board-specifoic GPIO assignments */
  39#define PIN_LCD_BL      GPIO_PIN_PA(28)
  40#define PWM_CH_BL       0       /* Must match with GPIO pin definition */
  41#define PIN_LCD_DISP    GPIO_PIN_PA(31)
  42#define PIN_AC97_RST_N  GPIO_PIN_PA(30)
  43#define PB_EXTINT_BASE  25
  44#define TS_IRQ          0
  45#define PIN_TS_EXTINT   GPIO_PIN_PB(PB_EXTINT_BASE+TS_IRQ)
  46#define PIN_PB_LEFT     GPIO_PIN_PB(11)
  47#define PIN_PB_RIGHT    GPIO_PIN_PB(12)
  48#define PIN_PWR_SW_N    GPIO_PIN_PB(14)
  49#define PIN_PWR_ON      GPIO_PIN_PB(13)
  50#define PIN_ZB_RST_N    GPIO_PIN_PA(21)
  51#define PIN_BT_RST      GPIO_PIN_PA(22)
  52#define PIN_LED_SYS     GPIO_PIN_PA(16)
  53#define PIN_LED_A       GPIO_PIN_PA(19)
  54#define PIN_LED_B       GPIO_PIN_PE(19)
  55
  56#ifdef CONFIG_BOARD_MRMT_LCD_LQ043T3DX0X
  57/* Sharp LQ043T3DX0x (or compatible) panel */
  58static struct fb_videomode __initdata lcd_fb_modes[] = {
  59        {
  60                .name           = "480x272 @ 59.94Hz",
  61                .refresh        = 59.94,
  62                .xres           = 480,          .yres           = 272,
  63                .pixclock       = KHZ2PICOS(9000),
  64
  65                .left_margin    = 2,            .right_margin   = 2,
  66                .upper_margin   = 3,            .lower_margin   = 9,
  67                .hsync_len      = 41,           .vsync_len      = 1,
  68
  69                .sync           = 0,
  70                .vmode          = FB_VMODE_NONINTERLACED,
  71        },
  72};
  73
  74static struct fb_monspecs __initdata lcd_fb_default_monspecs = {
  75        .manufacturer           = "SHA",
  76        .monitor                = "LQ043T3DX02",
  77        .modedb                 = lcd_fb_modes,
  78        .modedb_len             = ARRAY_SIZE(lcd_fb_modes),
  79        .hfmin                  = 14915,
  80        .hfmax                  = 17638,
  81        .vfmin                  = 53,
  82        .vfmax                  = 61,
  83        .dclkmax                = 9260000,
  84};
  85
  86static struct atmel_lcdfb_info __initdata rmt_lcdc_data = {
  87        .default_bpp            = 24,
  88        .default_dmacon         = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
  89        .default_lcdcon2        = (ATMEL_LCDC_DISTYPE_TFT
  90                                   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
  91                                   | ATMEL_LCDC_INVCLK_NORMAL
  92                                   | ATMEL_LCDC_MEMOR_BIG),
  93        .lcd_wiring_mode        = ATMEL_LCDC_WIRING_RGB,
  94        .default_monspecs       = &lcd_fb_default_monspecs,
  95        .guard_time             = 2,
  96};
  97#endif
  98
  99#ifdef CONFIG_BOARD_MRMT_LCD_KWH043GM08
 100/* Sharp KWH043GM08-Fxx (or compatible) panel */
 101static struct fb_videomode __initdata lcd_fb_modes[] = {
 102        {
 103                .name           = "480x272 @ 59.94Hz",
 104                .refresh        = 59.94,
 105                .xres           = 480,          .yres           = 272,
 106                .pixclock       = KHZ2PICOS(9000),
 107
 108                .left_margin    = 2,            .right_margin   = 2,
 109                .upper_margin   = 3,            .lower_margin   = 9,
 110                .hsync_len      = 41,           .vsync_len      = 1,
 111
 112                .sync           = 0,
 113                .vmode          = FB_VMODE_NONINTERLACED,
 114        },
 115};
 116
 117static struct fb_monspecs __initdata lcd_fb_default_monspecs = {
 118        .manufacturer           = "FOR",
 119        .monitor                = "KWH043GM08",
 120        .modedb                 = lcd_fb_modes,
 121        .modedb_len             = ARRAY_SIZE(lcd_fb_modes),
 122        .hfmin                  = 14915,
 123        .hfmax                  = 17638,
 124        .vfmin                  = 53,
 125        .vfmax                  = 61,
 126        .dclkmax                = 9260000,
 127};
 128
 129static struct atmel_lcdfb_info __initdata rmt_lcdc_data = {
 130        .default_bpp            = 24,
 131        .default_dmacon         = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
 132        .default_lcdcon2        = (ATMEL_LCDC_DISTYPE_TFT
 133                                   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
 134                                   | ATMEL_LCDC_INVCLK_INVERTED
 135                                   | ATMEL_LCDC_MEMOR_BIG),
 136        .lcd_wiring_mode        = ATMEL_LCDC_WIRING_RGB,
 137        .default_monspecs       = &lcd_fb_default_monspecs,
 138        .guard_time             = 2,
 139};
 140#endif
 141
 142#ifdef CONFIG_BOARD_MRMT_AC97
 143static struct ac97c_platform_data __initdata ac97c0_data = {
 144        .reset_pin              = PIN_AC97_RST_N,
 145};
 146#endif
 147
 148#ifdef CONFIG_BOARD_MRMT_UCB1400_TS
 149/* NOTE: IRQ assignment relies on kernel module parameter */
 150static struct platform_device rmt_ts_device = {
 151        .name   = "ucb1400_ts",
 152        .id     = -1,
 153        }
 154};
 155#endif
 156
 157#ifdef CONFIG_BOARD_MRMT_BL_PWM
 158/* PWM LEDs: LCD Backlight, etc */
 159static struct gpio_led rmt_pwm_led[] = {
 160        /* here the "gpio" is actually a PWM channel */
 161        { .name = "backlight",  .gpio = PWM_CH_BL, },
 162};
 163
 164static struct gpio_led_platform_data rmt_pwm_led_data = {
 165        .num_leds       = ARRAY_SIZE(rmt_pwm_led),
 166        .leds           = rmt_pwm_led,
 167};
 168
 169static struct platform_device rmt_pwm_led_dev = {
 170        .name           = "leds-atmel-pwm",
 171        .id             = -1,
 172        .dev            = {
 173                .platform_data  = &rmt_pwm_led_data,
 174        },
 175};
 176#endif
 177
 178#ifdef CONFIG_BOARD_MRMT_ADS7846_TS
 179static int ads7846_pendown_state(void)
 180{
 181        return !gpio_get_value( PIN_TS_EXTINT );        /* PENIRQ.*/
 182}
 183
 184static struct ads7846_platform_data ads_info = {
 185        .model                          = 7846,
 186        .keep_vref_on                   = 0,    /* Use external VREF pin */
 187        .vref_delay_usecs               = 0,
 188        .vref_mv                        = 3300, /* VREF = 3.3V */
 189        .settle_delay_usecs             = 800,
 190        .penirq_recheck_delay_usecs     = 800,
 191        .x_plate_ohms                   = 750,
 192        .y_plate_ohms                   = 300,
 193        .pressure_max                   = 4096,
 194        .debounce_max                   = 1,
 195        .debounce_rep                   = 0,
 196        .debounce_tol                   = (~0),
 197        .get_pendown_state              = ads7846_pendown_state,
 198        .filter                         = NULL,
 199        .filter_init                    = NULL,
 200};
 201
 202static struct spi_board_info spi01_board_info[] __initdata = {
 203        {
 204                .modalias       = "ads7846",
 205                .max_speed_hz   = 31250*26,
 206                .bus_num        = 0,
 207                .chip_select    = 1,
 208                .platform_data  = &ads_info,
 209                .irq            = AT32_EXTINT(TS_IRQ),
 210        },
 211};
 212#endif
 213
 214/* GPIO Keys: left, right, power, etc */
 215static const struct gpio_keys_button rmt_gpio_keys_buttons[] = {
 216        [0] = {
 217                .type           = EV_KEY,
 218                .code           = KEY_POWER,
 219                .gpio           = PIN_PWR_SW_N,
 220                .active_low     = 1,
 221                .desc           = "power button",
 222        },
 223        [1] = {
 224                .type           = EV_KEY,
 225                .code           = KEY_LEFT,
 226                .gpio           = PIN_PB_LEFT,
 227                .active_low     = 1,
 228                .desc           = "left button",
 229        },
 230        [2] = {
 231                .type           = EV_KEY,
 232                .code           = KEY_RIGHT,
 233                .gpio           = PIN_PB_RIGHT,
 234                .active_low     = 1,
 235                .desc           = "right button",
 236        },
 237};
 238
 239static const struct gpio_keys_platform_data rmt_gpio_keys_data = {
 240        .nbuttons =     ARRAY_SIZE(rmt_gpio_keys_buttons),
 241        .buttons =      (void *) rmt_gpio_keys_buttons,
 242};
 243
 244static struct platform_device rmt_gpio_keys = {
 245        .name =         "gpio-keys",
 246        .id =           -1,
 247        .dev = {
 248                .platform_data = (void *) &rmt_gpio_keys_data,
 249        }
 250};
 251
 252#ifdef CONFIG_BOARD_MRMT_RTC_I2C
 253static struct i2c_board_info __initdata mrmt1_i2c_rtc = {
 254        I2C_BOARD_INFO("s35390a", 0x30),
 255        .irq            = 0,
 256};
 257#endif
 258
 259static void mrmt_power_off(void)
 260{
 261        /* PWR_ON=0 will force power off */
 262        gpio_set_value( PIN_PWR_ON, 0 );
 263}
 264
 265static int __init mrmt1_init(void)
 266{
 267        gpio_set_value( PIN_PWR_ON, 1 );        /* Ensure PWR_ON is enabled */
 268
 269        pm_power_off = mrmt_power_off;
 270
 271        /* Setup USARTS (other than console) */
 272        at32_map_usart(2, 1, 0);        /* USART 2: /dev/ttyS1, RMT1:DB9M */
 273        at32_map_usart(3, 2, ATMEL_USART_RTS | ATMEL_USART_CTS);
 274                        /* USART 3: /dev/ttyS2, RMT1:Wireless, w/ RTS/CTS */
 275        at32_add_device_usart(1);
 276        at32_add_device_usart(2);
 277
 278        /* Select GPIO Key pins */
 279        at32_select_gpio( PIN_PWR_SW_N, AT32_GPIOF_DEGLITCH);
 280        at32_select_gpio( PIN_PB_LEFT, AT32_GPIOF_DEGLITCH);
 281        at32_select_gpio( PIN_PB_RIGHT, AT32_GPIOF_DEGLITCH);
 282        platform_device_register(&rmt_gpio_keys);
 283
 284#ifdef CONFIG_BOARD_MRMT_RTC_I2C
 285        i2c_register_board_info(0, &mrmt1_i2c_rtc, 1);
 286#endif
 287
 288#ifndef CONFIG_BOARD_MRMT_LCD_DISABLE
 289        /* User "alternate" LCDC inferface on Port E & D */
 290        /* NB: exclude LCDC_CC pin, as NGW100 reserves it for other use */
 291        at32_add_device_lcdc(0, &rmt_lcdc_data,
 292                fbmem_start, fbmem_size,
 293                (ATMEL_LCDC_ALT_24BIT | ATMEL_LCDC_PE_DVAL ) );
 294#endif
 295
 296#ifdef CONFIG_BOARD_MRMT_AC97
 297        at32_add_device_ac97c(0, &ac97c0_data, AC97C_BOTH);
 298#endif
 299
 300#ifdef CONFIG_BOARD_MRMT_ADS7846_TS
 301        /* Select the Touchscreen interrupt pin mode */
 302        at32_select_periph( GPIO_PIOB_BASE, 1 << (PB_EXTINT_BASE+TS_IRQ),
 303                        GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
 304        irq_set_irq_type(AT32_EXTINT(TS_IRQ), IRQ_TYPE_EDGE_FALLING);
 305        at32_spi_setup_slaves(0,spi01_board_info,ARRAY_SIZE(spi01_board_info));
 306        spi_register_board_info(spi01_board_info,ARRAY_SIZE(spi01_board_info));
 307#endif
 308
 309#ifdef CONFIG_BOARD_MRMT_UCB1400_TS
 310        /* Select the Touchscreen interrupt pin mode */
 311        at32_select_periph( GPIO_PIOB_BASE, 1 << (PB_EXTINT_BASE+TS_IRQ),
 312                        GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
 313        platform_device_register(&rmt_ts_device);
 314#endif
 315
 316        at32_select_gpio( PIN_LCD_DISP, AT32_GPIOF_OUTPUT );
 317        gpio_request( PIN_LCD_DISP, "LCD_DISP" );
 318        gpio_direction_output( PIN_LCD_DISP, 0 );       /* LCD DISP */
 319#ifdef CONFIG_BOARD_MRMT_LCD_DISABLE
 320        /* Keep Backlight and DISP off */
 321        at32_select_gpio( PIN_LCD_BL, AT32_GPIOF_OUTPUT );
 322        gpio_request( PIN_LCD_BL, "LCD_BL" );
 323        gpio_direction_output( PIN_LCD_BL, 0 );         /* Backlight */
 324#else
 325        gpio_set_value( PIN_LCD_DISP, 1 );      /* DISP asserted first */
 326#ifdef CONFIG_BOARD_MRMT_BL_PWM
 327        /* Use PWM for Backlight controls */
 328        at32_add_device_pwm(1 << PWM_CH_BL);
 329        platform_device_register(&rmt_pwm_led_dev);
 330#else
 331        /* Backlight always on */
 332        udelay( 1 );
 333        at32_select_gpio( PIN_LCD_BL, AT32_GPIOF_OUTPUT );
 334        gpio_request( PIN_LCD_BL, "LCD_BL" );
 335        gpio_direction_output( PIN_LCD_BL, 1 );
 336#endif
 337#endif
 338
 339        /* Make sure BT and Zigbee modules in reset */
 340        at32_select_gpio( PIN_BT_RST, AT32_GPIOF_OUTPUT );
 341        gpio_request( PIN_BT_RST, "BT_RST" );
 342        gpio_direction_output( PIN_BT_RST, 1 );
 343        /* BT Module in Reset */
 344
 345        at32_select_gpio( PIN_ZB_RST_N, AT32_GPIOF_OUTPUT );
 346        gpio_request( PIN_ZB_RST_N, "ZB_RST_N" );
 347        gpio_direction_output( PIN_ZB_RST_N, 0 );
 348        /* XBee Module in Reset */
 349
 350#ifdef CONFIG_BOARD_MRMT_WIRELESS_ZB
 351        udelay( 1000 );
 352        /* Unreset the XBee Module */
 353        gpio_set_value( PIN_ZB_RST_N, 1 );
 354#endif
 355#ifdef CONFIG_BOARD_MRMT_WIRELESS_BT
 356        udelay( 1000 );
 357        /* Unreset the BT Module */
 358        gpio_set_value( PIN_BT_RST, 0 );
 359#endif
 360
 361        return 0;
 362}
 363arch_initcall(mrmt1_init);
 364
 365static int __init mrmt1_early_init(void)
 366{
 367        /* To maintain power-on signal in case boot loader did not already */
 368        at32_select_gpio( PIN_PWR_ON, AT32_GPIOF_OUTPUT );
 369        gpio_request( PIN_PWR_ON, "PIN_PWR_ON" );
 370        gpio_direction_output( PIN_PWR_ON, 1 );
 371
 372        return 0;
 373}
 374core_initcall(mrmt1_early_init);
 375