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
  39 #include "devices.h"
  40
  41 static int eukrea_mbimx27_pins[] = {
  42         /* UART2 */
  43         PE3_PF_UART2_CTS,
  44         PE4_PF_UART2_RTS,
  45         PE6_PF_UART2_TXD,
  46         PE7_PF_UART2_RXD,
  47         /* UART3 */
  48         PE8_PF_UART3_TXD,
  49         PE9_PF_UART3_RXD,
  50         PE10_PF_UART3_CTS,
  51         PE11_PF_UART3_RTS,
  52         /* UART4 */
  53         PB26_AF_UART4_RTS,
  54         PB28_AF_UART4_TXD,
  55         PB29_AF_UART4_CTS,
  56         PB31_AF_UART4_RXD,
  57         /* SDHC1*/
  58         PE18_PF_SD1_D0,
  59         PE19_PF_SD1_D1,
  60         PE20_PF_SD1_D2,
  61         PE21_PF_SD1_D3,
  62         PE22_PF_SD1_CMD,
  63         PE23_PF_SD1_CLK,
  64         /* display */
  65         PA5_PF_LSCLK,
  66         PA6_PF_LD0,
  67         PA7_PF_LD1,
  68         PA8_PF_LD2,
  69         PA9_PF_LD3,
  70         PA10_PF_LD4,
  71         PA11_PF_LD5,
  72         PA12_PF_LD6,
  73         PA13_PF_LD7,
  74         PA14_PF_LD8,
  75         PA15_PF_LD9,
  76         PA16_PF_LD10,
  77         PA17_PF_LD11,
  78         PA18_PF_LD12,
  79         PA19_PF_LD13,
  80         PA20_PF_LD14,
  81         PA21_PF_LD15,
  82         PA22_PF_LD16,
  83         PA23_PF_LD17,
  84         PA28_PF_HSYNC,
  85         PA29_PF_VSYNC,
  86         PA30_PF_CONTRAST,
  87         PA31_PF_OE_ACD,
  88         /* SPI1 */
  89         PD28_PF_CSPI1_SS0,
  90         PD29_PF_CSPI1_SCLK,
  91         PD30_PF_CSPI1_MISO,
  92         PD31_PF_CSPI1_MOSI,
  93 };
  94
  95 static struct gpio_led gpio_leds[] = {
  96         {
  97                 .name                   = "led1",
  98                 .default_trigger        = "heartbeat",
  99                 .active_low             = 1,
 100                 .gpio                   = GPIO_PORTF | 16,
 101         },
 102         {
 103                 .name                   = "led2",
 104                 .default_trigger        = "none",
 105                 .active_low             = 1,
 106                 .gpio                   = GPIO_PORTF | 19,
 107         },
 108 };
 109
 110 static struct gpio_led_platform_data gpio_led_info = {
 111         .leds           = gpio_leds,
 112         .num_leds       = ARRAY_SIZE(gpio_leds),
 113 };
 114
 115 static struct platform_device leds_gpio = {
 116         .name   = "leds-gpio",
 117         .id     = -1,
 118         .dev    = {
 119                 .platform_data  = &gpio_led_info,
 120         },
 121 };
 122
 123 static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
 124         {
 125                 .mode = {
 126                         .name           = "CMO-QVGA",
 127                         .refresh        = 60,
 128                         .xres           = 320,
 129                         .yres           = 240,
 130                         .pixclock       = 156000,
 131                         .hsync_len      = 30,
 132                         .left_margin    = 38,
 133                         .right_margin   = 20,
 134                         .vsync_len      = 3,
 135                         .upper_margin   = 15,
 136                         .lower_margin   = 4,
 137                 },
 138                 .pcr            = 0xFAD08B80,
 139                 .bpp            = 16,
 140         }, {
 141                 .mode = {
 142                         .name           = "DVI-VGA",
 143                         .refresh        = 60,
 144                         .xres           = 640,
 145                         .yres           = 480,
 146                         .pixclock       = 32000,
 147                         .hsync_len      = 1,
 148                         .left_margin    = 35,
 149                         .right_margin   = 0,
 150                         .vsync_len      = 1,
 151                         .upper_margin   = 7,
 152                         .lower_margin   = 0,
 153                 },
 154                 .pcr            = 0xFA208B80,
 155                 .bpp            = 16,
 156         }, {
 157                 .mode = {
 158                         .name           = "DVI-SVGA",
 159                         .refresh        = 60,
 160                         .xres           = 800,
 161                         .yres           = 600,
 162                         .pixclock       = 25000,
 163                         .hsync_len      = 1,
 164                         .left_margin    = 35,
 165                         .right_margin   = 0,
 166                         .vsync_len      = 1,
 167                         .upper_margin   = 7,
 168                         .lower_margin   = 0,
 169                 },
 170                 .pcr            = 0xFA208B80,
 171                 .bpp            = 16,
 172         },
 173 };
 174
 175 static struct imx_fb_platform_data eukrea_mbimx27_fb_data = {
 176         .mode = eukrea_mbimx27_modes,
 177         .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
 178
 179         .pwmr           = 0x00A903FF,
 180         .lscr1          = 0x00120300,
 181         .dmacr          = 0x00040060,
 182 };
 183
 184 static void eukrea_mbimx27_bl_set_intensity(int intensity)
 185 {
 186         if (intensity)
 187                 gpio_direction_output(GPIO_PORTE | 5, 1);
 188         else
 189                 gpio_direction_output(GPIO_PORTE | 5, 0);
 190 }
 191
 192 static struct generic_bl_info eukrea_mbimx27_bl_info = {
 193         .name                   = "eukrea_mbimx27-bl",
 194         .max_intensity          = 0xff,
 195         .default_intensity      = 0xff,
 196         .set_bl_intensity       = eukrea_mbimx27_bl_set_intensity,
 197 };
 198
 199 static struct platform_device eukrea_mbimx27_bl_dev = {
 200         .name                   = "generic-bl",
 201         .id                     = 1,
 202         .dev = {
 203                 .platform_data  = &eukrea_mbimx27_bl_info,
 204         },
 205 };
 206
 207 static void eukrea_mbimx27_lcd_power_set(struct plat_lcd_data *pd,
 208                                    unsigned int power)
 209 {
 210         if (power)
 211                 gpio_direction_output(GPIO_PORTA | 25, 1);
 212         else
 213                 gpio_direction_output(GPIO_PORTA | 25, 0);
 214 }
 215
 216 static struct plat_lcd_data eukrea_mbimx27_lcd_power_data = {
 217         .set_power              = eukrea_mbimx27_lcd_power_set,
 218 };
 219
 220 static struct platform_device eukrea_mbimx27_lcd_powerdev = {
 221         .name                   = "platform-lcd",
 222         .dev.platform_data      = &eukrea_mbimx27_lcd_power_data,
 223 };
 224
 225 static struct imxuart_platform_data uart_pdata[] = {
 226         {
 227                 .flags = IMXUART_HAVE_RTSCTS,
 228         },
 229         {
 230                 .flags = IMXUART_HAVE_RTSCTS,
 231         },
 232 };
 233
 234 #if defined(CONFIG_TOUCHSCREEN_ADS7846)
 235         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 236
 237 #define ADS7846_PENDOWN (GPIO_PORTD | 25)
 238
 239 static void ads7846_dev_init(void)
 240 {
 241         if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
 242                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 243                 return;
 244         }
 245
 246         gpio_direction_input(ADS7846_PENDOWN);
 247 }
 248
 249 static int ads7846_get_pendown_state(void)
 250 {
 251         return !gpio_get_value(ADS7846_PENDOWN);
 252 }
 253
 254 static struct ads7846_platform_data ads7846_config __initdata = {
 255         .get_pendown_state      = ads7846_get_pendown_state,
 256         .keep_vref_on           = 1,
 257 };
 258
 259 static struct spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = {
 260         [0] = {
 261                 .modalias       = "ads7846",
 262                 .bus_num        = 0,
 263                 .chip_select    = 0,
 264                 .max_speed_hz   = 1500000,
 265                 .irq            = IRQ_GPIOD(25),
 266                 .platform_data  = &ads7846_config,
 267                 .mode           = SPI_MODE_2,
 268         },
 269 };
 270
 271 static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
 272
 273 static struct spi_imx_master eukrea_mbimx27_spi_0_data = {
 274         .chipselect     = eukrea_mbimx27_spi_cs,
 275         .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
 276 };
 277 #endif
 278
 279 static struct platform_device *platform_devices[] __initdata = {
 280         &leds_gpio,
 281 };
 282
 283 /*
 284  * system init for baseboard usage. Will be called by cpuimx27 init.
 285  *
 286  * Add platform devices present on this baseboard and init
 287  * them from CPU side as far as required to use them later on
 288  */
 289 void __init eukrea_mbimx27_baseboard_init(void)
 290 {
 291         mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
 292                 ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
 293
 294         mxc_register_device(&mxc_uart_device1, &uart_pdata[0]);
 295         mxc_register_device(&mxc_uart_device2, &uart_pdata[1]);
 296
 297         mxc_register_device(&mxc_fb_device, &eukrea_mbimx27_fb_data);
 298         mxc_register_device(&mxc_sdhc_device0, NULL);
 299
 300 #if defined(CONFIG_TOUCHSCREEN_ADS7846)
 301         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 302         /* SPI and ADS7846 Touchscreen controler init */
 303         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
 304         mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
 305         mxc_register_device(&mxc_spi_device0, &eukrea_mbimx27_spi_0_data);
 306         spi_register_board_info(eukrea_mbimx27_spi_board_info,
 307                         ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
 308         ads7846_dev_init();
 309 #endif
 310
 311         /* Leds configuration */
 312         mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
 313         mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
 314         /* Backlight */
 315         mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
 316         gpio_request(GPIO_PORTE | 5, "backlight");
 317         platform_device_register(&eukrea_mbimx27_bl_dev);
 318         /* LCD Reset */
 319         mxc_gpio_mode(GPIO_PORTA | 25 | GPIO_GPIO | GPIO_OUT);
 320         gpio_request(GPIO_PORTA | 25, "lcd_enable");
 321         platform_device_register(&eukrea_mbimx27_lcd_powerdev);
 322
 323         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 324 }