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