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