release/src-rt-6.x.4708/linux/linux-2.6.36/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/ssi.h>
  40 #include <mach/audmux.h>
  41
  42 #include "devices-imx27.h"
  43 #include "devices.h"
  44
  45 static int eukrea_mbimx27_pins[] = {
  46         /* UART2 */
  47         PE3_PF_UART2_CTS,
  48         PE4_PF_UART2_RTS,
  49         PE6_PF_UART2_TXD,
  50         PE7_PF_UART2_RXD,
  51         /* UART3 */
  52         PE8_PF_UART3_TXD,
  53         PE9_PF_UART3_RXD,
  54         PE10_PF_UART3_CTS,
  55         PE11_PF_UART3_RTS,
  56         /* UART4 */
  57 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
  58         PB26_AF_UART4_RTS,
  59         PB28_AF_UART4_TXD,
  60         PB29_AF_UART4_CTS,
  61         PB31_AF_UART4_RXD,
  62 #endif
  63         /* SDHC1*/
  64         PE18_PF_SD1_D0,
  65         PE19_PF_SD1_D1,
  66         PE20_PF_SD1_D2,
  67         PE21_PF_SD1_D3,
  68         PE22_PF_SD1_CMD,
  69         PE23_PF_SD1_CLK,
  70         /* display */
  71         PA5_PF_LSCLK,
  72         PA6_PF_LD0,
  73         PA7_PF_LD1,
  74         PA8_PF_LD2,
  75         PA9_PF_LD3,
  76         PA10_PF_LD4,
  77         PA11_PF_LD5,
  78         PA12_PF_LD6,
  79         PA13_PF_LD7,
  80         PA14_PF_LD8,
  81         PA15_PF_LD9,
  82         PA16_PF_LD10,
  83         PA17_PF_LD11,
  84         PA18_PF_LD12,
  85         PA19_PF_LD13,
  86         PA20_PF_LD14,
  87         PA21_PF_LD15,
  88         PA22_PF_LD16,
  89         PA23_PF_LD17,
  90         PA28_PF_HSYNC,
  91         PA29_PF_VSYNC,
  92         PA30_PF_CONTRAST,
  93         PA31_PF_OE_ACD,
  94         /* SPI1 */
  95         PD29_PF_CSPI1_SCLK,
  96         PD30_PF_CSPI1_MISO,
  97         PD31_PF_CSPI1_MOSI,
  98         /* SSI4 */
  99 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) || \
 100         defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
 101         PC16_PF_SSI4_FS,
 102         PC17_PF_SSI4_RXD | GPIO_PUEN,
 103         PC18_PF_SSI4_TXD | GPIO_PUEN,
 104         PC19_PF_SSI4_CLK,
 105 #endif
 106 };
 107
 108 static const uint32_t eukrea_mbimx27_keymap[] = {
 109         KEY(0, 0, KEY_UP),
 110         KEY(0, 1, KEY_DOWN),
 111         KEY(1, 0, KEY_RIGHT),
 112         KEY(1, 1, KEY_LEFT),
 113 };
 114
 115 static struct matrix_keymap_data eukrea_mbimx27_keymap_data = {
 116         .keymap         = eukrea_mbimx27_keymap,
 117         .keymap_size    = ARRAY_SIZE(eukrea_mbimx27_keymap),
 118 };
 119
 120 static struct gpio_led gpio_leds[] = {
 121         {
 122                 .name                   = "led1",
 123                 .default_trigger        = "heartbeat",
 124                 .active_low             = 1,
 125                 .gpio                   = GPIO_PORTF | 16,
 126         },
 127         {
 128                 .name                   = "led2",
 129                 .default_trigger        = "none",
 130                 .active_low             = 1,
 131                 .gpio                   = GPIO_PORTF | 19,
 132         },
 133 };
 134
 135 static struct gpio_led_platform_data gpio_led_info = {
 136         .leds           = gpio_leds,
 137         .num_leds       = ARRAY_SIZE(gpio_leds),
 138 };
 139
 140 static struct platform_device leds_gpio = {
 141         .name   = "leds-gpio",
 142         .id     = -1,
 143         .dev    = {
 144                 .platform_data  = &gpio_led_info,
 145         },
 146 };
 147
 148 static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
 149         {
 150                 .mode = {
 151                         .name           = "CMO-QVGA",
 152                         .refresh        = 60,
 153                         .xres           = 320,
 154                         .yres           = 240,
 155                         .pixclock       = 156000,
 156                         .hsync_len      = 30,
 157                         .left_margin    = 38,
 158                         .right_margin   = 20,
 159                         .vsync_len      = 3,
 160                         .upper_margin   = 15,
 161                         .lower_margin   = 4,
 162                 },
 163                 .pcr            = 0xFAD08B80,
 164                 .bpp            = 16,
 165         }, {
 166                 .mode = {
 167                         .name           = "DVI-VGA",
 168                         .refresh        = 60,
 169                         .xres           = 640,
 170                         .yres           = 480,
 171                         .pixclock       = 32000,
 172                         .hsync_len      = 1,
 173                         .left_margin    = 35,
 174                         .right_margin   = 0,
 175                         .vsync_len      = 1,
 176                         .upper_margin   = 7,
 177                         .lower_margin   = 0,
 178                 },
 179                 .pcr            = 0xFA208B80,
 180                 .bpp            = 16,
 181         }, {
 182                 .mode = {
 183                         .name           = "DVI-SVGA",
 184                         .refresh        = 60,
 185                         .xres           = 800,
 186                         .yres           = 600,
 187                         .pixclock       = 25000,
 188                         .hsync_len      = 1,
 189                         .left_margin    = 35,
 190                         .right_margin   = 0,
 191                         .vsync_len      = 1,
 192                         .upper_margin   = 7,
 193                         .lower_margin   = 0,
 194                 },
 195                 .pcr            = 0xFA208B80,
 196                 .bpp            = 16,
 197         },
 198 };
 199
 200 static struct imx_fb_platform_data eukrea_mbimx27_fb_data = {
 201         .mode = eukrea_mbimx27_modes,
 202         .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
 203
 204         .pwmr           = 0x00A903FF,
 205         .lscr1          = 0x00120300,
 206         .dmacr          = 0x00040060,
 207 };
 208
 209 static void eukrea_mbimx27_bl_set_intensity(int intensity)
 210 {
 211         if (intensity)
 212                 gpio_direction_output(GPIO_PORTE | 5, 1);
 213         else
 214                 gpio_direction_output(GPIO_PORTE | 5, 0);
 215 }
 216
 217 static struct generic_bl_info eukrea_mbimx27_bl_info = {
 218         .name                   = "eukrea_mbimx27-bl",
 219         .max_intensity          = 0xff,
 220         .default_intensity      = 0xff,
 221         .set_bl_intensity       = eukrea_mbimx27_bl_set_intensity,
 222 };
 223
 224 static struct platform_device eukrea_mbimx27_bl_dev = {
 225         .name                   = "generic-bl",
 226         .id                     = 1,
 227         .dev = {
 228                 .platform_data  = &eukrea_mbimx27_bl_info,
 229         },
 230 };
 231
 232 static void eukrea_mbimx27_lcd_power_set(struct plat_lcd_data *pd,
 233                                    unsigned int power)
 234 {
 235         if (power)
 236                 gpio_direction_output(GPIO_PORTA | 25, 1);
 237         else
 238                 gpio_direction_output(GPIO_PORTA | 25, 0);
 239 }
 240
 241 static struct plat_lcd_data eukrea_mbimx27_lcd_power_data = {
 242         .set_power              = eukrea_mbimx27_lcd_power_set,
 243 };
 244
 245 static struct platform_device eukrea_mbimx27_lcd_powerdev = {
 246         .name                   = "platform-lcd",
 247         .dev.platform_data      = &eukrea_mbimx27_lcd_power_data,
 248 };
 249
 250 static const struct imxuart_platform_data uart_pdata __initconst = {
 251         .flags = IMXUART_HAVE_RTSCTS,
 252 };
 253
 254 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 255
 256 #define ADS7846_PENDOWN (GPIO_PORTD | 25)
 257
 258 static void ads7846_dev_init(void)
 259 {
 260         if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
 261                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 262                 return;
 263         }
 264         gpio_direction_input(ADS7846_PENDOWN);
 265 }
 266
 267 static int ads7846_get_pendown_state(void)
 268 {
 269         return !gpio_get_value(ADS7846_PENDOWN);
 270 }
 271
 272 static struct ads7846_platform_data ads7846_config __initdata = {
 273         .get_pendown_state      = ads7846_get_pendown_state,
 274         .keep_vref_on           = 1,
 275 };
 276 #endif
 277
 278 #if defined(CONFIG_SPI_IMX) || defined(CONFIG_SPI_IMX_MODULE)
 279 static struct spi_board_info eukrea_mbimx27_spi_board_info[] __initdata = {
 280         [0] = {
 281                 .modalias       = "ads7846",
 282                 .bus_num        = 0,
 283                 .chip_select    = 0,
 284                 .max_speed_hz   = 1500000,
 285                 .irq            = IRQ_GPIOD(25),
 286                 .platform_data  = &ads7846_config,
 287                 .mode           = SPI_MODE_2,
 288         },
 289 };
 290
 291 static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
 292
 293 static const struct spi_imx_master eukrea_mbimx27_spi0_data __initconst = {
 294         .chipselect     = eukrea_mbimx27_spi_cs,
 295         .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
 296 };
 297 #endif
 298
 299 static struct i2c_board_info eukrea_mbimx27_i2c_devices[] = {
 300         {
 301                 I2C_BOARD_INFO("tlv320aic23", 0x1a),
 302         },
 303 };
 304
 305 static struct platform_device *platform_devices[] __initdata = {
 306         &leds_gpio,
 307 };
 308
 309 static struct imxmmc_platform_data sdhc_pdata = {
 310         .dat3_card_detect = 1,
 311 };
 312
 313 struct imx_ssi_platform_data eukrea_mbimx27_ssi_pdata = {
 314         .flags = IMX_SSI_DMA | IMX_SSI_USE_I2S_SLAVE,
 315 };
 316
 317 /*
 318  * system init for baseboard usage. Will be called by cpuimx27 init.
 319  *
 320  * Add platform devices present on this baseboard and init
 321  * them from CPU side as far as required to use them later on
 322  */
 323 void __init eukrea_mbimx27_baseboard_init(void)
 324 {
 325         mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
 326                 ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
 327
 328 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) || \
 329         defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
 330         /* SSI unit master I2S codec connected to SSI_PINS_4*/
 331         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 332                         MXC_AUDMUX_V1_PCR_SYN |
 333                         MXC_AUDMUX_V1_PCR_TFSDIR |
 334                         MXC_AUDMUX_V1_PCR_TCLKDIR |
 335                         MXC_AUDMUX_V1_PCR_RFSDIR |
 336                         MXC_AUDMUX_V1_PCR_RCLKDIR |
 337                         MXC_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
 338                         MXC_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
 339                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
 340         );
 341         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
 342                         MXC_AUDMUX_V1_PCR_SYN |
 343                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
 344         );
 345 #endif
 346
 347         imx27_add_imx_uart1(&uart_pdata);
 348         imx27_add_imx_uart2(&uart_pdata);
 349 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
 350         imx27_add_imx_uart3(&uart_pdata);
 351 #endif
 352
 353         mxc_register_device(&mxc_fb_device, &eukrea_mbimx27_fb_data);
 354         mxc_register_device(&mxc_sdhc_device0, &sdhc_pdata);
 355
 356         i2c_register_board_info(0, eukrea_mbimx27_i2c_devices,
 357                                 ARRAY_SIZE(eukrea_mbimx27_i2c_devices));
 358
 359         mxc_register_device(&imx_ssi_device0, &eukrea_mbimx27_ssi_pdata);
 360
 361 #if defined(CONFIG_TOUCHSCREEN_ADS7846) || 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         mxc_register_device(&imx_kpp_device, &eukrea_mbimx27_keymap_data);
 388
 389         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 390 }