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

   1 /*
   2  * Copyright (C) 2009-2010 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 "common.h"
  33 #include "devices-imx27.h"
  34 #include "hardware.h"
  35 #include "iomux-mx27.h"
  36
  37 static const int eukrea_mbimx27_pins[] __initconst = {
  38         /* UART2 */
  39         PE3_PF_UART2_CTS,
  40         PE4_PF_UART2_RTS,
  41         PE6_PF_UART2_TXD,
  42         PE7_PF_UART2_RXD,
  43         /* UART3 */
  44         PE8_PF_UART3_TXD,
  45         PE9_PF_UART3_RXD,
  46         PE10_PF_UART3_CTS,
  47         PE11_PF_UART3_RTS,
  48         /* UART4 */
  49 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
  50         PB26_AF_UART4_RTS,
  51         PB28_AF_UART4_TXD,
  52         PB29_AF_UART4_CTS,
  53         PB31_AF_UART4_RXD,
  54 #endif
  55         /* SDHC1*/
  56         PE18_PF_SD1_D0,
  57         PE19_PF_SD1_D1,
  58         PE20_PF_SD1_D2,
  59         PE21_PF_SD1_D3,
  60         PE22_PF_SD1_CMD,
  61         PE23_PF_SD1_CLK,
  62         /* display */
  63         PA5_PF_LSCLK,
  64         PA6_PF_LD0,
  65         PA7_PF_LD1,
  66         PA8_PF_LD2,
  67         PA9_PF_LD3,
  68         PA10_PF_LD4,
  69         PA11_PF_LD5,
  70         PA12_PF_LD6,
  71         PA13_PF_LD7,
  72         PA14_PF_LD8,
  73         PA15_PF_LD9,
  74         PA16_PF_LD10,
  75         PA17_PF_LD11,
  76         PA18_PF_LD12,
  77         PA19_PF_LD13,
  78         PA20_PF_LD14,
  79         PA21_PF_LD15,
  80         PA22_PF_LD16,
  81         PA23_PF_LD17,
  82         PA28_PF_HSYNC,
  83         PA29_PF_VSYNC,
  84         PA30_PF_CONTRAST,
  85         PA31_PF_OE_ACD,
  86         /* SPI1 */
  87         PD29_PF_CSPI1_SCLK,
  88         PD30_PF_CSPI1_MISO,
  89         PD31_PF_CSPI1_MOSI,
  90         /* SSI4 */
  91 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
  92         || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
  93         PC16_PF_SSI4_FS,
  94         PC17_PF_SSI4_RXD | GPIO_PUEN,
  95         PC18_PF_SSI4_TXD | GPIO_PUEN,
  96         PC19_PF_SSI4_CLK,
  97 #endif
  98 };
  99
 100 static const uint32_t eukrea_mbimx27_keymap[] = {
 101         KEY(0, 0, KEY_UP),
 102         KEY(0, 1, KEY_DOWN),
 103         KEY(1, 0, KEY_RIGHT),
 104         KEY(1, 1, KEY_LEFT),
 105 };
 106
 107 static const struct matrix_keymap_data
 108 eukrea_mbimx27_keymap_data __initconst = {
 109         .keymap         = eukrea_mbimx27_keymap,
 110         .keymap_size    = ARRAY_SIZE(eukrea_mbimx27_keymap),
 111 };
 112
 113 static const struct gpio_led eukrea_mbimx27_gpio_leds[] __initconst = {
 114         {
 115                 .name                   = "led1",
 116                 .default_trigger        = "heartbeat",
 117                 .active_low             = 1,
 118                 .gpio                   = GPIO_PORTF | 16,
 119         },
 120         {
 121                 .name                   = "led2",
 122                 .default_trigger        = "none",
 123                 .active_low             = 1,
 124                 .gpio                   = GPIO_PORTF | 19,
 125         },
 126 };
 127
 128 static const struct gpio_led_platform_data
 129                 eukrea_mbimx27_gpio_led_info __initconst = {
 130         .leds           = eukrea_mbimx27_gpio_leds,
 131         .num_leds       = ARRAY_SIZE(eukrea_mbimx27_gpio_leds),
 132 };
 133
 134 static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
 135         {
 136                 .mode = {
 137                         .name           = "CMO-QVGA",
 138                         .refresh        = 60,
 139                         .xres           = 320,
 140                         .yres           = 240,
 141                         .pixclock       = 156000,
 142                         .hsync_len      = 30,
 143                         .left_margin    = 38,
 144                         .right_margin   = 20,
 145                         .vsync_len      = 3,
 146                         .upper_margin   = 15,
 147                         .lower_margin   = 4,
 148                 },
 149                 .pcr            = 0xFAD08B80,
 150                 .bpp            = 16,
 151         }, {
 152                 .mode = {
 153                         .name           = "DVI-VGA",
 154                         .refresh        = 60,
 155                         .xres           = 640,
 156                         .yres           = 480,
 157                         .pixclock       = 32000,
 158                         .hsync_len      = 1,
 159                         .left_margin    = 35,
 160                         .right_margin   = 0,
 161                         .vsync_len      = 1,
 162                         .upper_margin   = 7,
 163                         .lower_margin   = 0,
 164                 },
 165                 .pcr            = 0xFA208B80,
 166                 .bpp            = 16,
 167         }, {
 168                 .mode = {
 169                         .name           = "DVI-SVGA",
 170                         .refresh        = 60,
 171                         .xres           = 800,
 172                         .yres           = 600,
 173                         .pixclock       = 25000,
 174                         .hsync_len      = 1,
 175                         .left_margin    = 35,
 176                         .right_margin   = 0,
 177                         .vsync_len      = 1,
 178                         .upper_margin   = 7,
 179                         .lower_margin   = 0,
 180                 },
 181                 .pcr            = 0xFA208B80,
 182                 .bpp            = 16,
 183         },
 184 };
 185
 186 static const struct imx_fb_platform_data eukrea_mbimx27_fb_data __initconst = {
 187         .mode = eukrea_mbimx27_modes,
 188         .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
 189
 190         .pwmr           = 0x00A903FF,
 191         .lscr1          = 0x00120300,
 192         .dmacr          = 0x00040060,
 193 };
 194
 195 static void eukrea_mbimx27_bl_set_intensity(int intensity)
 196 {
 197         if (intensity)
 198                 gpio_direction_output(GPIO_PORTE | 5, 1);
 199         else
 200                 gpio_direction_output(GPIO_PORTE | 5, 0);
 201 }
 202
 203 static struct generic_bl_info eukrea_mbimx27_bl_info = {
 204         .name                   = "eukrea_mbimx27-bl",
 205         .max_intensity          = 0xff,
 206         .default_intensity      = 0xff,
 207         .set_bl_intensity       = eukrea_mbimx27_bl_set_intensity,
 208 };
 209
 210 static struct platform_device eukrea_mbimx27_bl_dev = {
 211         .name                   = "generic-bl",
 212         .id                     = 1,
 213         .dev = {
 214                 .platform_data  = &eukrea_mbimx27_bl_info,
 215         },
 216 };
 217
 218 static void eukrea_mbimx27_lcd_power_set(struct plat_lcd_data *pd,
 219                                    unsigned int power)
 220 {
 221         if (power)
 222                 gpio_direction_output(GPIO_PORTA | 25, 1);
 223         else
 224                 gpio_direction_output(GPIO_PORTA | 25, 0);
 225 }
 226
 227 static struct plat_lcd_data eukrea_mbimx27_lcd_power_data = {
 228         .set_power              = eukrea_mbimx27_lcd_power_set,
 229 };
 230
 231 static struct platform_device eukrea_mbimx27_lcd_powerdev = {
 232         .name                   = "platform-lcd",
 233         .dev.platform_data      = &eukrea_mbimx27_lcd_power_data,
 234 };
 235
 236 static const struct imxuart_platform_data uart_pdata __initconst = {
 237         .flags = IMXUART_HAVE_RTSCTS,
 238 };
 239
 240 #define ADS7846_PENDOWN (GPIO_PORTD | 25)
 241
 242 static void __maybe_unused ads7846_dev_init(void)
 243 {
 244         if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
 245                 printk(KERN_ERR "can't get ads7846 pen down GPIO\n");
 246                 return;
 247         }
 248         gpio_direction_input(ADS7846_PENDOWN);
 249 }
 250
 251 static int ads7846_get_pendown_state(void)
 252 {
 253         return !gpio_get_value(ADS7846_PENDOWN);
 254 }
 255
 256 static struct ads7846_platform_data ads7846_config __initdata = {
 257         .get_pendown_state      = ads7846_get_pendown_state,
 258         .keep_vref_on           = 1,
 259 };
 260
 261 static struct spi_board_info __maybe_unused
 262                 eukrea_mbimx27_spi_board_info[] __initdata = {
 263         [0] = {
 264                 .modalias       = "ads7846",
 265                 .bus_num        = 0,
 266                 .chip_select    = 0,
 267                 .max_speed_hz   = 1500000,
 268                 /* irq number is run-time assigned */
 269                 .platform_data  = &ads7846_config,
 270                 .mode           = SPI_MODE_2,
 271         },
 272 };
 273
 274 static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
 275
 276 static const struct spi_imx_master eukrea_mbimx27_spi0_data __initconst = {
 277         .chipselect     = eukrea_mbimx27_spi_cs,
 278         .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
 279 };
 280
 281 static struct i2c_board_info eukrea_mbimx27_i2c_devices[] = {
 282         {
 283                 I2C_BOARD_INFO("tlv320aic23", 0x1a),
 284         },
 285 };
 286
 287 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
 288         .dat3_card_detect = 1,
 289 };
 290
 291 static const
 292 struct imx_ssi_platform_data eukrea_mbimx27_ssi_pdata __initconst = {
 293         .flags = IMX_SSI_DMA | IMX_SSI_USE_I2S_SLAVE,
 294 };
 295
 296 /*
 297  * system init for baseboard usage. Will be called by cpuimx27 init.
 298  *
 299  * Add platform devices present on this baseboard and init
 300  * them from CPU side as far as required to use them later on
 301  */
 302 void __init eukrea_mbimx27_baseboard_init(void)
 303 {
 304         mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
 305                 ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
 306
 307         imx27_add_imx_uart1(&uart_pdata);
 308         imx27_add_imx_uart2(&uart_pdata);
 309 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
 310         imx27_add_imx_uart3(&uart_pdata);
 311 #endif
 312
 313         imx27_add_imx_fb(&eukrea_mbimx27_fb_data);
 314         imx27_add_mxc_mmc(0, &sdhc_pdata);
 315
 316         i2c_register_board_info(0, eukrea_mbimx27_i2c_devices,
 317                                 ARRAY_SIZE(eukrea_mbimx27_i2c_devices));
 318
 319         imx27_add_imx_ssi(0, &eukrea_mbimx27_ssi_pdata);
 320
 321 #if defined(CONFIG_TOUCHSCREEN_ADS7846) \
 322         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 323         /* ADS7846 Touchscreen controller init */
 324         mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
 325         ads7846_dev_init();
 326 #endif
 327
 328         /* SPI_CS0 init */
 329         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
 330         imx27_add_spi_imx0(&eukrea_mbimx27_spi0_data);
 331         eukrea_mbimx27_spi_board_info[0].irq = gpio_to_irq(IMX_GPIO_NR(4, 25));
 332         spi_register_board_info(eukrea_mbimx27_spi_board_info,
 333                         ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
 334
 335         /* Leds configuration */
 336         mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
 337         mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
 338         /* Backlight */
 339         mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
 340         gpio_request(GPIO_PORTE | 5, "backlight");
 341         platform_device_register(&eukrea_mbimx27_bl_dev);
 342         /* LCD Reset */
 343         mxc_gpio_mode(GPIO_PORTA | 25 | GPIO_GPIO | GPIO_OUT);
 344         gpio_request(GPIO_PORTA | 25, "lcd_enable");
 345         platform_device_register(&eukrea_mbimx27_lcd_powerdev);
 346
 347         imx27_add_imx_keypad(&eukrea_mbimx27_keymap_data);
 348
 349         gpio_led_register_device(-1, &eukrea_mbimx27_gpio_led_info);
 350         imx_add_platform_device("eukrea_tlv320", 0, NULL, 0, NULL, 0);
 351 }