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 #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/spi.h>
  39 #include <mach/audmux.h>
  40
  41 #include "devices-imx27.h"
  42 #include "devices.h"
  43
  44 static const int eukrea_mbimx27_pins[] __initconst = {
  45         /* UART2 */
  46         PE3_PF_UART2_CTS,
  47         PE4_PF_UART2_RTS,
  48         PE6_PF_UART2_TXD,
  49         PE7_PF_UART2_RXD,
  50         /* UART3 */
  51         PE8_PF_UART3_TXD,
  52         PE9_PF_UART3_RXD,
  53         PE10_PF_UART3_CTS,
  54         PE11_PF_UART3_RTS,
  55         /* UART4 */
  56 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
  57         PB26_AF_UART4_RTS,
  58         PB28_AF_UART4_TXD,
  59         PB29_AF_UART4_CTS,
  60         PB31_AF_UART4_RXD,
  61 #endif
  62         /* SDHC1*/
  63         PE18_PF_SD1_D0,
  64         PE19_PF_SD1_D1,
  65         PE20_PF_SD1_D2,
  66         PE21_PF_SD1_D3,
  67         PE22_PF_SD1_CMD,
  68         PE23_PF_SD1_CLK,
  69         /* display */
  70         PA5_PF_LSCLK,
  71         PA6_PF_LD0,
  72         PA7_PF_LD1,
  73         PA8_PF_LD2,
  74         PA9_PF_LD3,
  75         PA10_PF_LD4,
  76         PA11_PF_LD5,
  77         PA12_PF_LD6,
  78         PA13_PF_LD7,
  79         PA14_PF_LD8,
  80         PA15_PF_LD9,
  81         PA16_PF_LD10,
  82         PA17_PF_LD11,
  83         PA18_PF_LD12,
  84         PA19_PF_LD13,
  85         PA20_PF_LD14,
  86         PA21_PF_LD15,
  87         PA22_PF_LD16,
  88         PA23_PF_LD17,
  89         PA28_PF_HSYNC,
  90         PA29_PF_VSYNC,
  91         PA30_PF_CONTRAST,
  92         PA31_PF_OE_ACD,
  93         /* SPI1 */
  94         PD29_PF_CSPI1_SCLK,
  95         PD30_PF_CSPI1_MISO,
  96         PD31_PF_CSPI1_MOSI,
  97         /* SSI4 */
  98 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
  99         || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
 100         PC16_PF_SSI4_FS,
 101         PC17_PF_SSI4_RXD | GPIO_PUEN,
 102         PC18_PF_SSI4_TXD | GPIO_PUEN,
 103         PC19_PF_SSI4_CLK,
 104 #endif
 105 };
 106
 107 static const uint32_t eukrea_mbimx27_keymap[] = {
 108         KEY(0, 0, KEY_UP),
 109         KEY(0, 1, KEY_DOWN),
 110         KEY(1, 0, KEY_RIGHT),
 111         KEY(1, 1, KEY_LEFT),
 112 };
 113
 114 static struct matrix_keymap_data eukrea_mbimx27_keymap_data = {
 115         .keymap         = eukrea_mbimx27_keymap,
 116         .keymap_size    = ARRAY_SIZE(eukrea_mbimx27_keymap),
 117 };
 118
 119 static struct gpio_led gpio_leds[] = {
 120         {
 121                 .name                   = "led1",
 122                 .default_trigger        = "heartbeat",
 123                 .active_low             = 1,
 124                 .gpio                   = GPIO_PORTF | 16,
 125         },
 126         {
 127                 .name                   = "led2",
 128                 .default_trigger        = "none",
 129                 .active_low             = 1,
 130                 .gpio                   = GPIO_PORTF | 19,
 131         },
 132 };
 133
 134 static struct gpio_led_platform_data gpio_led_info = {
 135         .leds           = gpio_leds,
 136         .num_leds       = ARRAY_SIZE(gpio_leds),
 137 };
 138
 139 static struct platform_device leds_gpio = {
 140         .name   = "leds-gpio",
 141         .id     = -1,
 142         .dev    = {
 143                 .platform_data  = &gpio_led_info,
 144         },
 145 };
 146
 147 static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
 148         {
 149                 .mode = {
 150                         .name           = "CMO-QVGA",
 151                         .refresh        = 60,
 152                         .xres           = 320,
 153                         .yres           = 240,
 154                         .pixclock       = 156000,
 155                         .hsync_len      = 30,
 156                         .left_margin    = 38,
 157                         .right_margin   = 20,
 158                         .vsync_len      = 3,
 159                         .upper_margin   = 15,
 160                         .lower_margin   = 4,
 161                 },
 162                 .pcr            = 0xFAD08B80,
 163                 .bpp            = 16,
 164         }, {
 165                 .mode = {
 166                         .name           = "DVI-VGA",
 167                         .refresh        = 60,
 168                         .xres           = 640,
 169                         .yres           = 480,
 170                         .pixclock       = 32000,
 171                         .hsync_len      = 1,
 172                         .left_margin    = 35,
 173                         .right_margin   = 0,
 174                         .vsync_len      = 1,
 175                         .upper_margin   = 7,
 176                         .lower_margin   = 0,
 177                 },
 178                 .pcr            = 0xFA208B80,
 179                 .bpp            = 16,
 180         }, {
 181                 .mode = {
 182                         .name           = "DVI-SVGA",
 183                         .refresh        = 60,
 184                         .xres           = 800,
 185                         .yres           = 600,
 186                         .pixclock       = 25000,
 187                         .hsync_len      = 1,
 188                         .left_margin    = 35,
 189                         .right_margin   = 0,
 190                         .vsync_len      = 1,
 191                         .upper_margin   = 7,
 192                         .lower_margin   = 0,
 193                 },
 194                 .pcr            = 0xFA208B80,
 195                 .bpp            = 16,
 196         },
 197 };
 198
 199 static struct imx_fb_platform_data eukrea_mbimx27_fb_data = {
 200         .mode = eukrea_mbimx27_modes,
 201         .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
 202
 203         .pwmr           = 0x00A903FF,
 204         .lscr1          = 0x00120300,
 205         .dmacr          = 0x00040060,
 206 };
 207
 208 static void eukrea_mbimx27_bl_set_intensity(int intensity)
 209 {
 210         if (intensity)
 211                 gpio_direction_output(GPIO_PORTE | 5, 1);
 212         else
 213                 gpio_direction_output(GPIO_PORTE | 5, 0);
 214 }
 215
 216 static struct generic_bl_info eukrea_mbimx27_bl_info = {
 217         .name                   = "eukrea_mbimx27-bl",
 218         .max_intensity          = 0xff,
 219         .default_intensity      = 0xff,
 220         .set_bl_intensity       = eukrea_mbimx27_bl_set_intensity,
 221 };
 222
 223 static struct platform_device eukrea_mbimx27_bl_dev = {
 224         .name                   = "generic-bl",
 225         .id                     = 1,
 226         .dev = {
 227                 .platform_data  = &eukrea_mbimx27_bl_info,
 228         },
 229 };
 230
 231 static void eukrea_mbimx27_lcd_power_set(struct plat_lcd_data *pd,
 232                                    unsigned int power)
 233 {
 234         if (power)
 235                 gpio_direction_output(GPIO_PORTA | 25, 1);
 236         else
 237                 gpio_direction_output(GPIO_PORTA | 25, 0);
 238 }
 239
 240 static struct plat_lcd_data eukrea_mbimx27_lcd_power_data = {
 241         .set_power              = eukrea_mbimx27_lcd_power_set,
 242 };
 243
 244 static struct platform_device eukrea_mbimx27_lcd_powerdev = {
 245         .name                   = "platform-lcd",
 246         .dev.platform_data      = &eukrea_mbimx27_lcd_power_data,
 247 };
 248
 249 static const struct imxuart_platform_data uart_pdata __initconst = {
 250         .flags = IMXUART_HAVE_RTSCTS,
 251 };
 252
 253 #define ADS7846_PENDOWN (GPIO_PORTD | 25)
 254
 255 static void ads7846_dev_init(void)
 256 {
 257         if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
 258                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 259                 return;
 260         }
 261         gpio_direction_input(ADS7846_PENDOWN);
 262 }
 263
 264 static int ads7846_get_pendown_state(void)
 265 {
 266         return !gpio_get_value(ADS7846_PENDOWN);
 267 }
 268
 269 static struct ads7846_platform_data ads7846_config __initdata = {
 270         .get_pendown_state      = ads7846_get_pendown_state,
 271         .keep_vref_on           = 1,
 272 };
 273
 274 static struct spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = {
 275         [0] = {
 276                 .modalias       = "ads7846",
 277                 .bus_num        = 0,
 278                 .chip_select    = 0,
 279                 .max_speed_hz   = 1500000,
 280                 .irq            = IRQ_GPIOD(25),
 281                 .platform_data  = &ads7846_config,
 282                 .mode           = SPI_MODE_2,
 283         },
 284 };
 285
 286 static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
 287
 288 static const struct spi_imx_master eukrea_mbimx27_spi0_data __initconst = {
 289         .chipselect     = eukrea_mbimx27_spi_cs,
 290         .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
 291 };
 292
 293 static struct i2c_board_info eukrea_mbimx27_i2c_devices[] = {
 294         {
 295                 I2C_BOARD_INFO("tlv320aic23", 0x1a),
 296         },
 297 };
 298
 299 static struct platform_device *platform_devices[] __initdata = {
 300         &leds_gpio,
 301 };
 302
 303 static struct imxmmc_platform_data sdhc_pdata = {
 304         .dat3_card_detect = 1,
 305 };
 306
 307 static const
 308 struct imx_ssi_platform_data eukrea_mbimx27_ssi_pdata __initconst = {
 309         .flags = IMX_SSI_DMA | IMX_SSI_USE_I2S_SLAVE,
 310 };
 311
 312 /*
 313  * system init for baseboard usage. Will be called by cpuimx27 init.
 314  *
 315  * Add platform devices present on this baseboard and init
 316  * them from CPU side as far as required to use them later on
 317  */
 318 void __init eukrea_mbimx27_baseboard_init(void)
 319 {
 320         mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
 321                 ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
 322
 323 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
 324         || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
 325         /* SSI unit master I2S codec connected to SSI_PINS_4*/
 326         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 327                         MXC_AUDMUX_V1_PCR_SYN |
 328                         MXC_AUDMUX_V1_PCR_TFSDIR |
 329                         MXC_AUDMUX_V1_PCR_TCLKDIR |
 330                         MXC_AUDMUX_V1_PCR_RFSDIR |
 331                         MXC_AUDMUX_V1_PCR_RCLKDIR |
 332                         MXC_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
 333                         MXC_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
 334                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
 335         );
 336         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
 337                         MXC_AUDMUX_V1_PCR_SYN |
 338                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
 339         );
 340 #endif
 341
 342         imx27_add_imx_uart1(&uart_pdata);
 343         imx27_add_imx_uart2(&uart_pdata);
 344 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
 345         imx27_add_imx_uart3(&uart_pdata);
 346 #endif
 347
 348         mxc_register_device(&mxc_fb_device, &eukrea_mbimx27_fb_data);
 349         mxc_register_device(&mxc_sdhc_device0, &sdhc_pdata);
 350
 351         i2c_register_board_info(0, eukrea_mbimx27_i2c_devices,
 352                                 ARRAY_SIZE(eukrea_mbimx27_i2c_devices));
 353
 354         imx27_add_imx_ssi(0, &eukrea_mbimx27_ssi_pdata);
 355
 356 #if defined(CONFIG_TOUCHSCREEN_ADS7846) \
 357         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 358         /* ADS7846 Touchscreen controller init */
 359         mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
 360         ads7846_dev_init();
 361 #endif
 362
 363 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
 364         /* SPI_CS0 init */
 365         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
 366         imx27_add_spi_imx0(&eukrea_mbimx27_spi0_data);
 367         spi_register_board_info(eukrea_mbimx27_spi_board_info,
 368                         ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
 369 #endif
 370
 371         /* Leds configuration */
 372         mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
 373         mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
 374         /* Backlight */
 375         mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
 376         gpio_request(GPIO_PORTE | 5, "backlight");
 377         platform_device_register(&eukrea_mbimx27_bl_dev);
 378         /* LCD Reset */
 379         mxc_gpio_mode(GPIO_PORTA | 25 | GPIO_GPIO | GPIO_OUT);
 380         gpio_request(GPIO_PORTA | 25, "lcd_enable");
 381         platform_device_register(&eukrea_mbimx27_lcd_powerdev);
 382
 383         mxc_register_device(&imx_kpp_device, &eukrea_mbimx27_keymap_data);
 384
 385         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 386 }