arch/avr32/boards/atngw100/mrmt.c

   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 */
  58 static 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
  74 static 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
  86 static 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 */
 101 static 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
 117 static 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
 129 static 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
 143 static 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 */
 150 static 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 */
 159 static struct gpio_led rmt_pwm_led[] = {
 160         /* here the "gpio" is actually a PWM channel */
 161         { .name = "backlight",  .gpio = PWM_CH_BL, },
 162 };
 163
 164 static struct gpio_led_platform_data rmt_pwm_led_data = {
 165         .num_leds       = ARRAY_SIZE(rmt_pwm_led),
 166         .leds           = rmt_pwm_led,
 167 };
 168
 169 static 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
 179 static int ads7846_pendown_state(void)
 180 {
 181         return !gpio_get_value( PIN_TS_EXTINT );        /* PENIRQ.*/
 182 }
 183
 184 static 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
 202 static 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 */
 215 static 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
 239 static 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
 244 static 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
 253 static struct i2c_board_info __initdata mrmt1_i2c_rtc = {
 254         I2C_BOARD_INFO("s35390a", 0x30),
 255         .irq            = 0,
 256 };
 257 #endif
 258
 259 static void mrmt_power_off(void)
 260 {
 261         /* PWR_ON=0 will force power off */
 262         gpio_set_value( PIN_PWR_ON, 0 );
 263 }
 264
 265 static 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         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 }
 363 arch_initcall(mrmt1_init);
 364
 365 static 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 }
 374 core_initcall(mrmt1_early_init);