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/pwm.h>
  21#include <linux/leds_pwm.h>
  22#include <linux/input.h>
  23#include <linux/gpio_keys.h>
  24#include <linux/spi/spi.h>
  25#include <linux/spi/ads7846.h>
  26
  27#include <video/atmel_lcdc.h>
  28#include <sound/atmel-ac97c.h>
  29
  30#include <asm/delay.h>
  31#include <asm/io.h>
  32#include <asm/setup.h>
  33
  34#include <mach/at32ap700x.h>
  35#include <mach/board.h>
  36#include <mach/init.h>
  37#include <mach/portmux.h>
  38
  39/* Define board-specifoic GPIO assignments */
  40#define PIN_LCD_BL      GPIO_PIN_PA(28)
  41#define PWM_CH_BL       0       /* Must match with GPIO pin definition */
  42#define PIN_LCD_DISP    GPIO_PIN_PA(31)
  43#define PIN_AC97_RST_N  GPIO_PIN_PA(30)
  44#define PB_EXTINT_BASE  25
  45#define TS_IRQ          0
  46#define PIN_TS_EXTINT   GPIO_PIN_PB(PB_EXTINT_BASE+TS_IRQ)
  47#define PIN_PB_LEFT     GPIO_PIN_PB(11)
  48#define PIN_PB_RIGHT    GPIO_PIN_PB(12)
  49#define PIN_PWR_SW_N    GPIO_PIN_PB(14)
  50#define PIN_PWR_ON      GPIO_PIN_PB(13)
  51#define PIN_ZB_RST_N    GPIO_PIN_PA(21)
  52#define PIN_BT_RST      GPIO_PIN_PA(22)
  53#define PIN_LED_SYS     GPIO_PIN_PA(16)
  54#define PIN_LED_A       GPIO_PIN_PA(19)
  55#define PIN_LED_B       GPIO_PIN_PE(19)
  56
  57#ifdef CONFIG_BOARD_MRMT_LCD_LQ043T3DX0X
  58/* Sharp LQ043T3DX0x (or compatible) panel */
  59static struct fb_videomode __initdata lcd_fb_modes[] = {
  60        {
  61                .name           = "480x272 @ 59.94Hz",
  62                .refresh        = 59.94,
  63                .xres           = 480,          .yres           = 272,
  64                .pixclock       = KHZ2PICOS(9000),
  65
  66                .left_margin    = 2,            .right_margin   = 2,
  67                .upper_margin   = 3,            .lower_margin   = 9,
  68                .hsync_len      = 41,           .vsync_len      = 1,
  69
  70                .sync           = 0,
  71                .vmode          = FB_VMODE_NONINTERLACED,
  72        },
  73};
  74
  75static struct fb_monspecs __initdata lcd_fb_default_monspecs = {
  76        .manufacturer           = "SHA",
  77        .monitor                = "LQ043T3DX02",
  78        .modedb                 = lcd_fb_modes,
  79        .modedb_len             = ARRAY_SIZE(lcd_fb_modes),
  80        .hfmin                  = 14915,
  81        .hfmax                  = 17638,
  82        .vfmin                  = 53,
  83        .vfmax                  = 61,
  84        .dclkmax                = 9260000,
  85};
  86
  87static struct atmel_lcdfb_pdata __initdata rmt_lcdc_data = {
  88        .default_bpp            = 24,
  89        .default_dmacon         = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
  90        .default_lcdcon2        = (ATMEL_LCDC_DISTYPE_TFT
  91                                   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
  92                                   | ATMEL_LCDC_INVCLK_NORMAL
  93                                   | ATMEL_LCDC_MEMOR_BIG),
  94        .lcd_wiring_mode        = ATMEL_LCDC_WIRING_RGB,
  95        .default_monspecs       = &lcd_fb_default_monspecs,
  96        .guard_time             = 2,
  97};
  98#endif
  99
 100#ifdef CONFIG_BOARD_MRMT_LCD_KWH043GM08
 101/* Sharp KWH043GM08-Fxx (or compatible) panel */
 102static struct fb_videomode __initdata lcd_fb_modes[] = {
 103        {
 104                .name           = "480x272 @ 59.94Hz",
 105                .refresh        = 59.94,
 106                .xres           = 480,          .yres           = 272,
 107                .pixclock       = KHZ2PICOS(9000),
 108
 109                .left_margin    = 2,            .right_margin   = 2,
 110                .upper_margin   = 3,            .lower_margin   = 9,
 111                .hsync_len      = 41,           .vsync_len      = 1,
 112
 113                .sync           = 0,
 114                .vmode          = FB_VMODE_NONINTERLACED,
 115        },
 116};
 117
 118static struct fb_monspecs __initdata lcd_fb_default_monspecs = {
 119        .manufacturer           = "FOR",
 120        .monitor                = "KWH043GM08",
 121        .modedb                 = lcd_fb_modes,
 122        .modedb_len             = ARRAY_SIZE(lcd_fb_modes),
 123        .hfmin                  = 14915,
 124        .hfmax                  = 17638,
 125        .vfmin                  = 53,
 126        .vfmax                  = 61,
 127        .dclkmax                = 9260000,
 128};
 129
 130static struct atmel_lcdfb_pdata __initdata rmt_lcdc_data = {
 131        .default_bpp            = 24,
 132        .default_dmacon         = ATMEL_LCDC_DMAEN | ATMEL_LCDC_DMA2DEN,
 133        .default_lcdcon2        = (ATMEL_LCDC_DISTYPE_TFT
 134                                   | ATMEL_LCDC_CLKMOD_ALWAYSACTIVE
 135                                   | ATMEL_LCDC_INVCLK_INVERTED
 136                                   | ATMEL_LCDC_MEMOR_BIG),
 137        .lcd_wiring_mode        = ATMEL_LCDC_WIRING_RGB,
 138        .default_monspecs       = &lcd_fb_default_monspecs,
 139        .guard_time             = 2,
 140};
 141#endif
 142
 143#ifdef CONFIG_BOARD_MRMT_AC97
 144static struct ac97c_platform_data __initdata ac97c0_data = {
 145        .reset_pin              = PIN_AC97_RST_N,
 146};
 147#endif
 148
 149#ifdef CONFIG_BOARD_MRMT_UCB1400_TS
 150/* NOTE: IRQ assignment relies on kernel module parameter */
 151static struct platform_device rmt_ts_device = {
 152        .name   = "ucb1400_ts",
 153        .id     = -1,
 154};
 155#endif
 156
 157#ifdef CONFIG_BOARD_MRMT_BL_PWM
 158/* PWM LEDs: LCD Backlight, etc */
 159static struct pwm_lookup pwm_lookup[] = {
 160        PWM_LOOKUP("at91sam9rl-pwm", PWM_CH_BL, "leds_pwm", "ds1",
 161                   5000, PWM_POLARITY_INVERSED),
 162};
 163
 164static struct led_pwm pwm_leds[] = {
 165        {
 166                .name = "backlight",
 167                .max_brightness = 255,
 168        },
 169};
 170
 171static struct led_pwm_platform_data pwm_data = {
 172        .num_leds       = ARRAY_SIZE(pwm_leds),
 173        .leds           = pwm_leds,
 174};
 175
 176static struct platform_device leds_pwm = {
 177        .name   = "leds_pwm",
 178        .id     = -1,
 179        .dev    = {
 180                .platform_data = &pwm_data,
 181        },
 182};
 183#endif
 184
 185#ifdef CONFIG_BOARD_MRMT_ADS7846_TS
 186static int ads7846_pendown_state(void)
 187{
 188        return !gpio_get_value( PIN_TS_EXTINT );        /* PENIRQ.*/
 189}
 190
 191static struct ads7846_platform_data ads_info = {
 192        .model                          = 7846,
 193        .keep_vref_on                   = 0,    /* Use external VREF pin */
 194        .vref_delay_usecs               = 0,
 195        .vref_mv                        = 3300, /* VREF = 3.3V */
 196        .settle_delay_usecs             = 800,
 197        .penirq_recheck_delay_usecs     = 800,
 198        .x_plate_ohms                   = 750,
 199        .y_plate_ohms                   = 300,
 200        .pressure_max                   = 4096,
 201        .debounce_max                   = 1,
 202        .debounce_rep                   = 0,
 203        .debounce_tol                   = (~0),
 204        .get_pendown_state              = ads7846_pendown_state,
 205        .filter                         = NULL,
 206        .filter_init                    = NULL,
 207};
 208
 209static struct spi_board_info spi01_board_info[] __initdata = {
 210        {
 211                .modalias       = "ads7846",
 212                .max_speed_hz   = 31250*26,
 213                .bus_num        = 0,
 214                .chip_select    = 1,
 215                .platform_data  = &ads_info,
 216                .irq            = AT32_EXTINT(TS_IRQ),
 217        },
 218};
 219#endif
 220
 221/* GPIO Keys: left, right, power, etc */
 222static const struct gpio_keys_button rmt_gpio_keys_buttons[] = {
 223        [0] = {
 224                .type           = EV_KEY,
 225                .code           = KEY_POWER,
 226                .gpio           = PIN_PWR_SW_N,
 227                .active_low     = 1,
 228                .desc           = "power button",
 229        },
 230        [1] = {
 231                .type           = EV_KEY,
 232                .code           = KEY_LEFT,
 233                .gpio           = PIN_PB_LEFT,
 234                .active_low     = 1,
 235                .desc           = "left button",
 236        },
 237        [2] = {
 238                .type           = EV_KEY,
 239                .code           = KEY_RIGHT,
 240                .gpio           = PIN_PB_RIGHT,
 241                .active_low     = 1,
 242                .desc           = "right button",
 243        },
 244};
 245
 246static const struct gpio_keys_platform_data rmt_gpio_keys_data = {
 247        .nbuttons =     ARRAY_SIZE(rmt_gpio_keys_buttons),
 248        .buttons =      (void *) rmt_gpio_keys_buttons,
 249};
 250
 251static struct platform_device rmt_gpio_keys = {
 252        .name =         "gpio-keys",
 253        .id =           -1,
 254        .dev = {
 255                .platform_data = (void *) &rmt_gpio_keys_data,
 256        }
 257};
 258
 259#ifdef CONFIG_BOARD_MRMT_RTC_I2C
 260static struct i2c_board_info __initdata mrmt1_i2c_rtc = {
 261        I2C_BOARD_INFO("s35390a", 0x30),
 262        .irq            = 0,
 263};
 264#endif
 265
 266static void mrmt_power_off(void)
 267{
 268        /* PWR_ON=0 will force power off */
 269        gpio_set_value( PIN_PWR_ON, 0 );
 270}
 271
 272static int __init mrmt1_init(void)
 273{
 274        gpio_set_value( PIN_PWR_ON, 1 );        /* Ensure PWR_ON is enabled */
 275
 276        pm_power_off = mrmt_power_off;
 277
 278        /* Setup USARTS (other than console) */
 279        at32_map_usart(2, 1, 0);        /* USART 2: /dev/ttyS1, RMT1:DB9M */
 280        at32_map_usart(3, 2, ATMEL_USART_RTS | ATMEL_USART_CTS);
 281                        /* USART 3: /dev/ttyS2, RMT1:Wireless, w/ RTS/CTS */
 282        at32_add_device_usart(1);
 283        at32_add_device_usart(2);
 284
 285        /* Select GPIO Key pins */
 286        at32_select_gpio( PIN_PWR_SW_N, AT32_GPIOF_DEGLITCH);
 287        at32_select_gpio( PIN_PB_LEFT, AT32_GPIOF_DEGLITCH);
 288        at32_select_gpio( PIN_PB_RIGHT, AT32_GPIOF_DEGLITCH);
 289        platform_device_register(&rmt_gpio_keys);
 290
 291#ifdef CONFIG_BOARD_MRMT_RTC_I2C
 292        i2c_register_board_info(0, &mrmt1_i2c_rtc, 1);
 293#endif
 294
 295#ifndef CONFIG_BOARD_MRMT_LCD_DISABLE
 296        /* User "alternate" LCDC inferface on Port E & D */
 297        /* NB: exclude LCDC_CC pin, as NGW100 reserves it for other use */
 298        at32_add_device_lcdc(0, &rmt_lcdc_data,
 299                fbmem_start, fbmem_size,
 300                (ATMEL_LCDC_ALT_24BIT | ATMEL_LCDC_PE_DVAL ) );
 301#endif
 302
 303#ifdef CONFIG_BOARD_MRMT_AC97
 304        at32_add_device_ac97c(0, &ac97c0_data, AC97C_BOTH);
 305#endif
 306
 307#ifdef CONFIG_BOARD_MRMT_ADS7846_TS
 308        /* Select the Touchscreen interrupt pin mode */
 309        at32_select_periph( GPIO_PIOB_BASE, 1 << (PB_EXTINT_BASE+TS_IRQ),
 310                        GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
 311        irq_set_irq_type(AT32_EXTINT(TS_IRQ), IRQ_TYPE_EDGE_FALLING);
 312        at32_spi_setup_slaves(0,spi01_board_info,ARRAY_SIZE(spi01_board_info));
 313        spi_register_board_info(spi01_board_info,ARRAY_SIZE(spi01_board_info));
 314#endif
 315
 316#ifdef CONFIG_BOARD_MRMT_UCB1400_TS
 317        /* Select the Touchscreen interrupt pin mode */
 318        at32_select_periph( GPIO_PIOB_BASE, 1 << (PB_EXTINT_BASE+TS_IRQ),
 319                        GPIO_PERIPH_A, AT32_GPIOF_DEGLITCH);
 320        platform_device_register(&rmt_ts_device);
 321#endif
 322
 323        at32_select_gpio( PIN_LCD_DISP, AT32_GPIOF_OUTPUT );
 324        gpio_request( PIN_LCD_DISP, "LCD_DISP" );
 325        gpio_direction_output( PIN_LCD_DISP, 0 );       /* LCD DISP */
 326#ifdef CONFIG_BOARD_MRMT_LCD_DISABLE
 327        /* Keep Backlight and DISP off */
 328        at32_select_gpio( PIN_LCD_BL, AT32_GPIOF_OUTPUT );
 329        gpio_request( PIN_LCD_BL, "LCD_BL" );
 330        gpio_direction_output( PIN_LCD_BL, 0 );         /* Backlight */
 331#else
 332        gpio_set_value( PIN_LCD_DISP, 1 );      /* DISP asserted first */
 333#ifdef CONFIG_BOARD_MRMT_BL_PWM
 334        /* Use PWM for Backlight controls */
 335        at32_add_device_pwm(1 << PWM_CH_BL);
 336        pwm_add_table(pwm_lookup, ARRAY_SIZE(pwm_lookup));
 337        platform_device_register(&leds_pwm);
 338#else
 339        /* Backlight always on */
 340        udelay( 1 );
 341        at32_select_gpio( PIN_LCD_BL, AT32_GPIOF_OUTPUT );
 342        gpio_request( PIN_LCD_BL, "LCD_BL" );
 343        gpio_direction_output( PIN_LCD_BL, 1 );
 344#endif
 345#endif
 346
 347        /* Make sure BT and Zigbee modules in reset */
 348        at32_select_gpio( PIN_BT_RST, AT32_GPIOF_OUTPUT );
 349        gpio_request( PIN_BT_RST, "BT_RST" );
 350        gpio_direction_output( PIN_BT_RST, 1 );
 351        /* BT Module in Reset */
 352
 353        at32_select_gpio( PIN_ZB_RST_N, AT32_GPIOF_OUTPUT );
 354        gpio_request( PIN_ZB_RST_N, "ZB_RST_N" );
 355        gpio_direction_output( PIN_ZB_RST_N, 0 );
 356        /* XBee Module in Reset */
 357
 358#ifdef CONFIG_BOARD_MRMT_WIRELESS_ZB
 359        udelay( 1000 );
 360        /* Unreset the XBee Module */
 361        gpio_set_value( PIN_ZB_RST_N, 1 );
 362#endif
 363#ifdef CONFIG_BOARD_MRMT_WIRELESS_BT
 364        udelay( 1000 );
 365        /* Unreset the BT Module */
 366        gpio_set_value( PIN_BT_RST, 0 );
 367#endif
 368
 369        return 0;
 370}
 371arch_initcall(mrmt1_init);
 372
 373static int __init mrmt1_early_init(void)
 374{
 375        /* To maintain power-on signal in case boot loader did not already */
 376        at32_select_gpio( PIN_PWR_ON, AT32_GPIOF_OUTPUT );
 377        gpio_request( PIN_PWR_ON, "PIN_PWR_ON" );
 378        gpio_direction_output( PIN_PWR_ON, 1 );
 379
 380        return 0;
 381}
 382core_initcall(mrmt1_early_init);
 383