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 #include <mach/spi.h>
  36 #include <mach/audmux.h>
  37
  38 #include "devices-imx27.h"
  39 #include "devices.h"
  40
  41 static const int eukrea_mbimx27_pins[] __initconst = {
  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 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
  54         PB26_AF_UART4_RTS,
  55         PB28_AF_UART4_TXD,
  56         PB29_AF_UART4_CTS,
  57         PB31_AF_UART4_RXD,
  58 #endif
  59         /* SDHC1*/
  60         PE18_PF_SD1_D0,
  61         PE19_PF_SD1_D1,
  62         PE20_PF_SD1_D2,
  63         PE21_PF_SD1_D3,
  64         PE22_PF_SD1_CMD,
  65         PE23_PF_SD1_CLK,
  66         /* display */
  67         PA5_PF_LSCLK,
  68         PA6_PF_LD0,
  69         PA7_PF_LD1,
  70         PA8_PF_LD2,
  71         PA9_PF_LD3,
  72         PA10_PF_LD4,
  73         PA11_PF_LD5,
  74         PA12_PF_LD6,
  75         PA13_PF_LD7,
  76         PA14_PF_LD8,
  77         PA15_PF_LD9,
  78         PA16_PF_LD10,
  79         PA17_PF_LD11,
  80         PA18_PF_LD12,
  81         PA19_PF_LD13,
  82         PA20_PF_LD14,
  83         PA21_PF_LD15,
  84         PA22_PF_LD16,
  85         PA23_PF_LD17,
  86         PA28_PF_HSYNC,
  87         PA29_PF_VSYNC,
  88         PA30_PF_CONTRAST,
  89         PA31_PF_OE_ACD,
  90         /* SPI1 */
  91         PD29_PF_CSPI1_SCLK,
  92         PD30_PF_CSPI1_MISO,
  93         PD31_PF_CSPI1_MOSI,
  94         /* SSI4 */
  95 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
  96         || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
  97         PC16_PF_SSI4_FS,
  98         PC17_PF_SSI4_RXD | GPIO_PUEN,
  99         PC18_PF_SSI4_TXD | GPIO_PUEN,
 100         PC19_PF_SSI4_CLK,
 101 #endif
 102 };
 103
 104 static const uint32_t eukrea_mbimx27_keymap[] = {
 105         KEY(0, 0, KEY_UP),
 106         KEY(0, 1, KEY_DOWN),
 107         KEY(1, 0, KEY_RIGHT),
 108         KEY(1, 1, KEY_LEFT),
 109 };
 110
 111 static const struct matrix_keymap_data
 112 eukrea_mbimx27_keymap_data __initconst = {
 113         .keymap         = eukrea_mbimx27_keymap,
 114         .keymap_size    = ARRAY_SIZE(eukrea_mbimx27_keymap),
 115 };
 116
 117 static struct gpio_led gpio_leds[] = {
 118         {
 119                 .name                   = "led1",
 120                 .default_trigger        = "heartbeat",
 121                 .active_low             = 1,
 122                 .gpio                   = GPIO_PORTF | 16,
 123         },
 124         {
 125                 .name                   = "led2",
 126                 .default_trigger        = "none",
 127                 .active_low             = 1,
 128                 .gpio                   = GPIO_PORTF | 19,
 129         },
 130 };
 131
 132 static struct gpio_led_platform_data gpio_led_info = {
 133         .leds           = gpio_leds,
 134         .num_leds       = ARRAY_SIZE(gpio_leds),
 135 };
 136
 137 static struct platform_device leds_gpio = {
 138         .name   = "leds-gpio",
 139         .id     = -1,
 140         .dev    = {
 141                 .platform_data  = &gpio_led_info,
 142         },
 143 };
 144
 145 static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
 146         {
 147                 .mode = {
 148                         .name           = "CMO-QVGA",
 149                         .refresh        = 60,
 150                         .xres           = 320,
 151                         .yres           = 240,
 152                         .pixclock       = 156000,
 153                         .hsync_len      = 30,
 154                         .left_margin    = 38,
 155                         .right_margin   = 20,
 156                         .vsync_len      = 3,
 157                         .upper_margin   = 15,
 158                         .lower_margin   = 4,
 159                 },
 160                 .pcr            = 0xFAD08B80,
 161                 .bpp            = 16,
 162         }, {
 163                 .mode = {
 164                         .name           = "DVI-VGA",
 165                         .refresh        = 60,
 166                         .xres           = 640,
 167                         .yres           = 480,
 168                         .pixclock       = 32000,
 169                         .hsync_len      = 1,
 170                         .left_margin    = 35,
 171                         .right_margin   = 0,
 172                         .vsync_len      = 1,
 173                         .upper_margin   = 7,
 174                         .lower_margin   = 0,
 175                 },
 176                 .pcr            = 0xFA208B80,
 177                 .bpp            = 16,
 178         }, {
 179                 .mode = {
 180                         .name           = "DVI-SVGA",
 181                         .refresh        = 60,
 182                         .xres           = 800,
 183                         .yres           = 600,
 184                         .pixclock       = 25000,
 185                         .hsync_len      = 1,
 186                         .left_margin    = 35,
 187                         .right_margin   = 0,
 188                         .vsync_len      = 1,
 189                         .upper_margin   = 7,
 190                         .lower_margin   = 0,
 191                 },
 192                 .pcr            = 0xFA208B80,
 193                 .bpp            = 16,
 194         },
 195 };
 196
 197 static const struct imx_fb_platform_data eukrea_mbimx27_fb_data __initconst = {
 198         .mode = eukrea_mbimx27_modes,
 199         .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
 200
 201         .pwmr           = 0x00A903FF,
 202         .lscr1          = 0x00120300,
 203         .dmacr          = 0x00040060,
 204 };
 205
 206 static void eukrea_mbimx27_bl_set_intensity(int intensity)
 207 {
 208         if (intensity)
 209                 gpio_direction_output(GPIO_PORTE | 5, 1);
 210         else
 211                 gpio_direction_output(GPIO_PORTE | 5, 0);
 212 }
 213
 214 static struct generic_bl_info eukrea_mbimx27_bl_info = {
 215         .name                   = "eukrea_mbimx27-bl",
 216         .max_intensity          = 0xff,
 217         .default_intensity      = 0xff,
 218         .set_bl_intensity       = eukrea_mbimx27_bl_set_intensity,
 219 };
 220
 221 static struct platform_device eukrea_mbimx27_bl_dev = {
 222         .name                   = "generic-bl",
 223         .id                     = 1,
 224         .dev = {
 225                 .platform_data  = &eukrea_mbimx27_bl_info,
 226         },
 227 };
 228
 229 static void eukrea_mbimx27_lcd_power_set(struct plat_lcd_data *pd,
 230                                    unsigned int power)
 231 {
 232         if (power)
 233                 gpio_direction_output(GPIO_PORTA | 25, 1);
 234         else
 235                 gpio_direction_output(GPIO_PORTA | 25, 0);
 236 }
 237
 238 static struct plat_lcd_data eukrea_mbimx27_lcd_power_data = {
 239         .set_power              = eukrea_mbimx27_lcd_power_set,
 240 };
 241
 242 static struct platform_device eukrea_mbimx27_lcd_powerdev = {
 243         .name                   = "platform-lcd",
 244         .dev.platform_data      = &eukrea_mbimx27_lcd_power_data,
 245 };
 246
 247 static const struct imxuart_platform_data uart_pdata __initconst = {
 248         .flags = IMXUART_HAVE_RTSCTS,
 249 };
 250
 251 #if defined(CONFIG_TOUCHSCREEN_ADS7846) \
 252         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 253
 254 #define ADS7846_PENDOWN (GPIO_PORTD | 25)
 255
 256 static void ads7846_dev_init(void)
 257 {
 258         if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
 259                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 260                 return;
 261         }
 262         gpio_direction_input(ADS7846_PENDOWN);
 263 }
 264
 265 static int ads7846_get_pendown_state(void)
 266 {
 267         return !gpio_get_value(ADS7846_PENDOWN);
 268 }
 269
 270 static struct ads7846_platform_data ads7846_config __initdata = {
 271         .get_pendown_state      = ads7846_get_pendown_state,
 272         .keep_vref_on           = 1,
 273 };
 274 #endif
 275
 276 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
 277 static struct spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = {
 278         [0] = {
 279                 .modalias       = "ads7846",
 280                 .bus_num        = 0,
 281                 .chip_select    = 0,
 282                 .max_speed_hz   = 1500000,
 283                 .irq            = IRQ_GPIOD(25),
 284                 .platform_data  = &ads7846_config,
 285                 .mode           = SPI_MODE_2,
 286         },
 287 };
 288
 289 static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
 290
 291 static const struct spi_imx_master eukrea_mbimx27_spi0_data __initconst = {
 292         .chipselect     = eukrea_mbimx27_spi_cs,
 293         .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
 294 };
 295 #endif
 296
 297 static struct i2c_board_info eukrea_mbimx27_i2c_devices[] = {
 298         {
 299                 I2C_BOARD_INFO("tlv320aic23", 0x1a),
 300         },
 301 };
 302
 303 static struct platform_device *platform_devices[] __initdata = {
 304         &leds_gpio,
 305 };
 306
 307 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
 308         .dat3_card_detect = 1,
 309 };
 310
 311 static const
 312 struct imx_ssi_platform_data eukrea_mbimx27_ssi_pdata __initconst = {
 313         .flags = IMX_SSI_DMA | IMX_SSI_USE_I2S_SLAVE,
 314 };
 315
 316 /*
 317  * system init for baseboard usage. Will be called by cpuimx27 init.
 318  *
 319  * Add platform devices present on this baseboard and init
 320  * them from CPU side as far as required to use them later on
 321  */
 322 void __init eukrea_mbimx27_baseboard_init(void)
 323 {
 324         mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
 325                 ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
 326
 327 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
 328         || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
 329         /* SSI unit master I2S codec connected to SSI_PINS_4*/
 330         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 331                         MXC_AUDMUX_V1_PCR_SYN |
 332                         MXC_AUDMUX_V1_PCR_TFSDIR |
 333                         MXC_AUDMUX_V1_PCR_TCLKDIR |
 334                         MXC_AUDMUX_V1_PCR_RFSDIR |
 335                         MXC_AUDMUX_V1_PCR_RCLKDIR |
 336                         MXC_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
 337                         MXC_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
 338                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
 339         );
 340         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
 341                         MXC_AUDMUX_V1_PCR_SYN |
 342                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
 343         );
 344 #endif
 345
 346         imx27_add_imx_uart1(&uart_pdata);
 347         imx27_add_imx_uart2(&uart_pdata);
 348 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
 349         imx27_add_imx_uart3(&uart_pdata);
 350 #endif
 351
 352         imx27_add_imx_fb(&eukrea_mbimx27_fb_data);
 353         imx27_add_mxc_mmc(0, &sdhc_pdata);
 354
 355         i2c_register_board_info(0, eukrea_mbimx27_i2c_devices,
 356                                 ARRAY_SIZE(eukrea_mbimx27_i2c_devices));
 357
 358         imx27_add_imx_ssi(0, &eukrea_mbimx27_ssi_pdata);
 359
 360 #if defined(CONFIG_TOUCHSCREEN_ADS7846) \
 361         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 362         /* ADS7846 Touchscreen controller init */
 363         mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
 364         ads7846_dev_init();
 365 #endif
 366
 367 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
 368         /* SPI_CS0 init */
 369         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
 370         imx27_add_spi_imx0(&eukrea_mbimx27_spi0_data);
 371         spi_register_board_info(eukrea_mbimx27_spi_board_info,
 372                         ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
 373 #endif
 374
 375         /* Leds configuration */
 376         mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
 377         mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
 378         /* Backlight */
 379         mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
 380         gpio_request(GPIO_PORTE | 5, "backlight");
 381         platform_device_register(&eukrea_mbimx27_bl_dev);
 382         /* LCD Reset */
 383         mxc_gpio_mode(GPIO_PORTA | 25 | GPIO_GPIO | GPIO_OUT);
 384         gpio_request(GPIO_PORTA | 25, "lcd_enable");
 385         platform_device_register(&eukrea_mbimx27_lcd_powerdev);
 386
 387         imx27_add_imx_keypad(&eukrea_mbimx27_keymap_data);
 388
 389         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 390 }