arch/arm/mach-mx2/eukrea_mbimx27-baseboard.c

   1 /*
   2  * Copyright (C) 2009 Eric Benard - eric@eukrea.com
   3  *
   4  * Based on pcm970-baseboard.c which is :
   5  * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  19  * MA 02110-1301, USA.
  20  */
  21
  22 #include <linux/gpio.h>
  23 #include <linux/irq.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/spi/spi.h>
  26 #include <linux/spi/ads7846.h>
  27 #include <linux/backlight.h>
  28 #include <video/platform_lcd.h>
  29 #include <linux/input/matrix_keypad.h>
  30
  31 #include <asm/mach/arch.h>
  32
  33 #include <mach/common.h>
  34 #include <mach/iomux-mx27.h>
  35 #include <mach/imxfb.h>
  36 #include <mach/hardware.h>
  37 #include <mach/mmc.h>
  38 #include <mach/imx-uart.h>
  39 #include <mach/spi.h>
  40
  41 #include "devices.h"
  42
  43 static int eukrea_mbimx27_pins[] = {
  44         /* UART2 */
  45         PE3_PF_UART2_CTS,
  46         PE4_PF_UART2_RTS,
  47         PE6_PF_UART2_TXD,
  48         PE7_PF_UART2_RXD,
  49         /* UART3 */
  50         PE8_PF_UART3_TXD,
  51         PE9_PF_UART3_RXD,
  52         PE10_PF_UART3_CTS,
  53         PE11_PF_UART3_RTS,
  54         /* UART4 */
  55 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
  56         PB26_AF_UART4_RTS,
  57         PB28_AF_UART4_TXD,
  58         PB29_AF_UART4_CTS,
  59         PB31_AF_UART4_RXD,
  60 #endif
  61         /* SDHC1*/
  62         PE18_PF_SD1_D0,
  63         PE19_PF_SD1_D1,
  64         PE20_PF_SD1_D2,
  65         PE21_PF_SD1_D3,
  66         PE22_PF_SD1_CMD,
  67         PE23_PF_SD1_CLK,
  68         /* display */
  69         PA5_PF_LSCLK,
  70         PA6_PF_LD0,
  71         PA7_PF_LD1,
  72         PA8_PF_LD2,
  73         PA9_PF_LD3,
  74         PA10_PF_LD4,
  75         PA11_PF_LD5,
  76         PA12_PF_LD6,
  77         PA13_PF_LD7,
  78         PA14_PF_LD8,
  79         PA15_PF_LD9,
  80         PA16_PF_LD10,
  81         PA17_PF_LD11,
  82         PA18_PF_LD12,
  83         PA19_PF_LD13,
  84         PA20_PF_LD14,
  85         PA21_PF_LD15,
  86         PA22_PF_LD16,
  87         PA23_PF_LD17,
  88         PA28_PF_HSYNC,
  89         PA29_PF_VSYNC,
  90         PA30_PF_CONTRAST,
  91         PA31_PF_OE_ACD,
  92         /* SPI1 */
  93         PD29_PF_CSPI1_SCLK,
  94         PD30_PF_CSPI1_MISO,
  95         PD31_PF_CSPI1_MOSI,
  96 };
  97
  98 static const uint32_t eukrea_mbimx27_keymap[] = {
  99         KEY(0, 0, KEY_UP),
 100         KEY(0, 1, KEY_DOWN),
 101         KEY(1, 0, KEY_RIGHT),
 102         KEY(1, 1, KEY_LEFT),
 103 };
 104
 105 static struct matrix_keymap_data eukrea_mbimx27_keymap_data = {
 106         .keymap         = eukrea_mbimx27_keymap,
 107         .keymap_size    = ARRAY_SIZE(eukrea_mbimx27_keymap),
 108 };
 109
 110 static struct gpio_led gpio_leds[] = {
 111         {
 112                 .name                   = "led1",
 113                 .default_trigger        = "heartbeat",
 114                 .active_low             = 1,
 115                 .gpio                   = GPIO_PORTF | 16,
 116         },
 117         {
 118                 .name                   = "led2",
 119                 .default_trigger        = "none",
 120                 .active_low             = 1,
 121                 .gpio                   = GPIO_PORTF | 19,
 122         },
 123 };
 124
 125 static struct gpio_led_platform_data gpio_led_info = {
 126         .leds           = gpio_leds,
 127         .num_leds       = ARRAY_SIZE(gpio_leds),
 128 };
 129
 130 static struct platform_device leds_gpio = {
 131         .name   = "leds-gpio",
 132         .id     = -1,
 133         .dev    = {
 134                 .platform_data  = &gpio_led_info,
 135         },
 136 };
 137
 138 static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
 139         {
 140                 .mode = {
 141                         .name           = "CMO-QVGA",
 142                         .refresh        = 60,
 143                         .xres           = 320,
 144                         .yres           = 240,
 145                         .pixclock       = 156000,
 146                         .hsync_len      = 30,
 147                         .left_margin    = 38,
 148                         .right_margin   = 20,
 149                         .vsync_len      = 3,
 150                         .upper_margin   = 15,
 151                         .lower_margin   = 4,
 152                 },
 153                 .pcr            = 0xFAD08B80,
 154                 .bpp            = 16,
 155         }, {
 156                 .mode = {
 157                         .name           = "DVI-VGA",
 158                         .refresh        = 60,
 159                         .xres           = 640,
 160                         .yres           = 480,
 161                         .pixclock       = 32000,
 162                         .hsync_len      = 1,
 163                         .left_margin    = 35,
 164                         .right_margin   = 0,
 165                         .vsync_len      = 1,
 166                         .upper_margin   = 7,
 167                         .lower_margin   = 0,
 168                 },
 169                 .pcr            = 0xFA208B80,
 170                 .bpp            = 16,
 171         }, {
 172                 .mode = {
 173                         .name           = "DVI-SVGA",
 174                         .refresh        = 60,
 175                         .xres           = 800,
 176                         .yres           = 600,
 177                         .pixclock       = 25000,
 178                         .hsync_len      = 1,
 179                         .left_margin    = 35,
 180                         .right_margin   = 0,
 181                         .vsync_len      = 1,
 182                         .upper_margin   = 7,
 183                         .lower_margin   = 0,
 184                 },
 185                 .pcr            = 0xFA208B80,
 186                 .bpp            = 16,
 187         },
 188 };
 189
 190 static struct imx_fb_platform_data eukrea_mbimx27_fb_data = {
 191         .mode = eukrea_mbimx27_modes,
 192         .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
 193
 194         .pwmr           = 0x00A903FF,
 195         .lscr1          = 0x00120300,
 196         .dmacr          = 0x00040060,
 197 };
 198
 199 static void eukrea_mbimx27_bl_set_intensity(int intensity)
 200 {
 201         if (intensity)
 202                 gpio_direction_output(GPIO_PORTE | 5, 1);
 203         else
 204                 gpio_direction_output(GPIO_PORTE | 5, 0);
 205 }
 206
 207 static struct generic_bl_info eukrea_mbimx27_bl_info = {
 208         .name                   = "eukrea_mbimx27-bl",
 209         .max_intensity          = 0xff,
 210         .default_intensity      = 0xff,
 211         .set_bl_intensity       = eukrea_mbimx27_bl_set_intensity,
 212 };
 213
 214 static struct platform_device eukrea_mbimx27_bl_dev = {
 215         .name                   = "generic-bl",
 216         .id                     = 1,
 217         .dev = {
 218                 .platform_data  = &eukrea_mbimx27_bl_info,
 219         },
 220 };
 221
 222 static void eukrea_mbimx27_lcd_power_set(struct plat_lcd_data *pd,
 223                                    unsigned int power)
 224 {
 225         if (power)
 226                 gpio_direction_output(GPIO_PORTA | 25, 1);
 227         else
 228                 gpio_direction_output(GPIO_PORTA | 25, 0);
 229 }
 230
 231 static struct plat_lcd_data eukrea_mbimx27_lcd_power_data = {
 232         .set_power              = eukrea_mbimx27_lcd_power_set,
 233 };
 234
 235 static struct platform_device eukrea_mbimx27_lcd_powerdev = {
 236         .name                   = "platform-lcd",
 237         .dev.platform_data      = &eukrea_mbimx27_lcd_power_data,
 238 };
 239
 240 static struct imxuart_platform_data uart_pdata[] = {
 241         {
 242                 .flags = IMXUART_HAVE_RTSCTS,
 243         },
 244         {
 245                 .flags = IMXUART_HAVE_RTSCTS,
 246         },
 247         {
 248                 .flags = IMXUART_HAVE_RTSCTS,
 249         },
 250 };
 251
 252 #if defined(CONFIG_TOUCHSCREEN_ADS7846) \
 253         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 254
 255 #define ADS7846_PENDOWN (GPIO_PORTD | 25)
 256
 257 static void ads7846_dev_init(void)
 258 {
 259         if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
 260                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 261                 return;
 262         }
 263         gpio_direction_input(ADS7846_PENDOWN);
 264 }
 265
 266 static int ads7846_get_pendown_state(void)
 267 {
 268         return !gpio_get_value(ADS7846_PENDOWN);
 269 }
 270
 271 static struct ads7846_platform_data ads7846_config __initdata = {
 272         .get_pendown_state      = ads7846_get_pendown_state,
 273         .keep_vref_on           = 1,
 274 };
 275 #endif
 276
 277 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
 278 static struct spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = {
 279         [0] = {
 280                 .modalias       = "ads7846",
 281                 .bus_num        = 0,
 282                 .chip_select    = 0,
 283                 .max_speed_hz   = 1500000,
 284                 .irq            = IRQ_GPIOD(25),
 285                 .platform_data  = &ads7846_config,
 286                 .mode           = SPI_MODE_2,
 287         },
 288 };
 289
 290 static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
 291
 292 static struct spi_imx_master eukrea_mbimx27_spi_0_data = {
 293         .chipselect     = eukrea_mbimx27_spi_cs,
 294         .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
 295 };
 296 #endif
 297
 298 static struct platform_device *platform_devices[] __initdata = {
 299         &leds_gpio,
 300 };
 301
 302 static struct imxmmc_platform_data sdhc_pdata = {
 303         .dat3_card_detect = 1,
 304 };
 305
 306 /*
 307  * system init for baseboard usage. Will be called by cpuimx27 init.
 308  *
 309  * Add platform devices present on this baseboard and init
 310  * them from CPU side as far as required to use them later on
 311  */
 312 void __init eukrea_mbimx27_baseboard_init(void)
 313 {
 314         mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
 315                 ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
 316
 317         mxc_register_device(&mxc_uart_device1, &uart_pdata[0]);
 318         mxc_register_device(&mxc_uart_device2, &uart_pdata[1]);
 319 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
 320         mxc_register_device(&mxc_uart_device3, &uart_pdata[2]);
 321 #endif
 322
 323         mxc_register_device(&mxc_fb_device, &eukrea_mbimx27_fb_data);
 324         mxc_register_device(&mxc_sdhc_device0, &sdhc_pdata);
 325
 326 #if defined(CONFIG_TOUCHSCREEN_ADS7846) \
 327         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 328         /* ADS7846 Touchscreen controller init */
 329         mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
 330         ads7846_dev_init();
 331 #endif
 332
 333 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
 334         /* SPI_CS0 init */
 335         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
 336         mxc_register_device(&mxc_spi_device0, &eukrea_mbimx27_spi_0_data);
 337         spi_register_board_info(eukrea_mbimx27_spi_board_info,
 338                         ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
 339 #endif
 340
 341         /* Leds configuration */
 342         mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
 343         mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
 344         /* Backlight */
 345         mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
 346         gpio_request(GPIO_PORTE | 5, "backlight");
 347         platform_device_register(&eukrea_mbimx27_bl_dev);
 348         /* LCD Reset */
 349         mxc_gpio_mode(GPIO_PORTA | 25 | GPIO_GPIO | GPIO_OUT);
 350         gpio_request(GPIO_PORTA | 25, "lcd_enable");
 351         platform_device_register(&eukrea_mbimx27_lcd_powerdev);
 352
 353         mxc_register_device(&imx_kpp_device, &eukrea_mbimx27_keymap_data);
 354
 355         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 356 }