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/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 */
  59 static 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
  75 static 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
  87 static 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 */
 102 static 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
 118 static 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
 130 static 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
 144 static 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 */
 151 static 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 */
 159 static struct pwm_lookup pwm_lookup[] = {
 160         PWM_LOOKUP("at91sam9rl-pwm", PWM_CH_BL, "leds_pwm", "ds1",
 161                    5000, PWM_POLARITY_INVERSED),
 162 };
 163
 164 static struct led_pwm pwm_leds[] = {
 165         {
 166                 .name = "backlight",
 167                 .max_brightness = 255,
 168         },
 169 };
 170
 171 static struct led_pwm_platform_data pwm_data = {
 172         .num_leds       = ARRAY_SIZE(pwm_leds),
 173         .leds           = pwm_leds,
 174 };
 175
 176 static 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
 186 static int ads7846_pendown_state(void)
 187 {
 188         return !gpio_get_value( PIN_TS_EXTINT );        /* PENIRQ.*/
 189 }
 190
 191 static 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
 209 static 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 */
 222 static 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
 246 static 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
 251 static 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
 260 static struct i2c_board_info __initdata mrmt1_i2c_rtc = {
 261         I2C_BOARD_INFO("s35390a", 0x30),
 262         .irq            = 0,
 263 };
 264 #endif
 265
 266 static void mrmt_power_off(void)
 267 {
 268         /* PWR_ON=0 will force power off */
 269         gpio_set_value( PIN_PWR_ON, 0 );
 270 }
 271
 272 static 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 }
 371 arch_initcall(mrmt1_init);
 372
 373 static 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 }
 382 core_initcall(mrmt1_early_init);