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/audmux.h>
  36
  37 #include "devices-imx27.h"
  38
  39 static const int eukrea_mbimx27_pins[] __initconst = {
  40         /* UART2 */
  41         PE3_PF_UART2_CTS,
  42         PE4_PF_UART2_RTS,
  43         PE6_PF_UART2_TXD,
  44         PE7_PF_UART2_RXD,
  45         /* UART3 */
  46         PE8_PF_UART3_TXD,
  47         PE9_PF_UART3_RXD,
  48         PE10_PF_UART3_CTS,
  49         PE11_PF_UART3_RTS,
  50         /* UART4 */
  51 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
  52         PB26_AF_UART4_RTS,
  53         PB28_AF_UART4_TXD,
  54         PB29_AF_UART4_CTS,
  55         PB31_AF_UART4_RXD,
  56 #endif
  57         /* SDHC1*/
  58         PE18_PF_SD1_D0,
  59         PE19_PF_SD1_D1,
  60         PE20_PF_SD1_D2,
  61         PE21_PF_SD1_D3,
  62         PE22_PF_SD1_CMD,
  63         PE23_PF_SD1_CLK,
  64         /* display */
  65         PA5_PF_LSCLK,
  66         PA6_PF_LD0,
  67         PA7_PF_LD1,
  68         PA8_PF_LD2,
  69         PA9_PF_LD3,
  70         PA10_PF_LD4,
  71         PA11_PF_LD5,
  72         PA12_PF_LD6,
  73         PA13_PF_LD7,
  74         PA14_PF_LD8,
  75         PA15_PF_LD9,
  76         PA16_PF_LD10,
  77         PA17_PF_LD11,
  78         PA18_PF_LD12,
  79         PA19_PF_LD13,
  80         PA20_PF_LD14,
  81         PA21_PF_LD15,
  82         PA22_PF_LD16,
  83         PA23_PF_LD17,
  84         PA28_PF_HSYNC,
  85         PA29_PF_VSYNC,
  86         PA30_PF_CONTRAST,
  87         PA31_PF_OE_ACD,
  88         /* SPI1 */
  89         PD29_PF_CSPI1_SCLK,
  90         PD30_PF_CSPI1_MISO,
  91         PD31_PF_CSPI1_MOSI,
  92         /* SSI4 */
  93 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
  94         || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
  95         PC16_PF_SSI4_FS,
  96         PC17_PF_SSI4_RXD | GPIO_PUEN,
  97         PC18_PF_SSI4_TXD | GPIO_PUEN,
  98         PC19_PF_SSI4_CLK,
  99 #endif
 100 };
 101
 102 static const uint32_t eukrea_mbimx27_keymap[] = {
 103         KEY(0, 0, KEY_UP),
 104         KEY(0, 1, KEY_DOWN),
 105         KEY(1, 0, KEY_RIGHT),
 106         KEY(1, 1, KEY_LEFT),
 107 };
 108
 109 static const struct matrix_keymap_data
 110 eukrea_mbimx27_keymap_data __initconst = {
 111         .keymap         = eukrea_mbimx27_keymap,
 112         .keymap_size    = ARRAY_SIZE(eukrea_mbimx27_keymap),
 113 };
 114
 115 static struct gpio_led gpio_leds[] = {
 116         {
 117                 .name                   = "led1",
 118                 .default_trigger        = "heartbeat",
 119                 .active_low             = 1,
 120                 .gpio                   = GPIO_PORTF | 16,
 121         },
 122         {
 123                 .name                   = "led2",
 124                 .default_trigger        = "none",
 125                 .active_low             = 1,
 126                 .gpio                   = GPIO_PORTF | 19,
 127         },
 128 };
 129
 130 static struct gpio_led_platform_data gpio_led_info = {
 131         .leds           = gpio_leds,
 132         .num_leds       = ARRAY_SIZE(gpio_leds),
 133 };
 134
 135 static struct platform_device leds_gpio = {
 136         .name   = "leds-gpio",
 137         .id     = -1,
 138         .dev    = {
 139                 .platform_data  = &gpio_led_info,
 140         },
 141 };
 142
 143 static struct imx_fb_videomode eukrea_mbimx27_modes[] = {
 144         {
 145                 .mode = {
 146                         .name           = "CMO-QVGA",
 147                         .refresh        = 60,
 148                         .xres           = 320,
 149                         .yres           = 240,
 150                         .pixclock       = 156000,
 151                         .hsync_len      = 30,
 152                         .left_margin    = 38,
 153                         .right_margin   = 20,
 154                         .vsync_len      = 3,
 155                         .upper_margin   = 15,
 156                         .lower_margin   = 4,
 157                 },
 158                 .pcr            = 0xFAD08B80,
 159                 .bpp            = 16,
 160         }, {
 161                 .mode = {
 162                         .name           = "DVI-VGA",
 163                         .refresh        = 60,
 164                         .xres           = 640,
 165                         .yres           = 480,
 166                         .pixclock       = 32000,
 167                         .hsync_len      = 1,
 168                         .left_margin    = 35,
 169                         .right_margin   = 0,
 170                         .vsync_len      = 1,
 171                         .upper_margin   = 7,
 172                         .lower_margin   = 0,
 173                 },
 174                 .pcr            = 0xFA208B80,
 175                 .bpp            = 16,
 176         }, {
 177                 .mode = {
 178                         .name           = "DVI-SVGA",
 179                         .refresh        = 60,
 180                         .xres           = 800,
 181                         .yres           = 600,
 182                         .pixclock       = 25000,
 183                         .hsync_len      = 1,
 184                         .left_margin    = 35,
 185                         .right_margin   = 0,
 186                         .vsync_len      = 1,
 187                         .upper_margin   = 7,
 188                         .lower_margin   = 0,
 189                 },
 190                 .pcr            = 0xFA208B80,
 191                 .bpp            = 16,
 192         },
 193 };
 194
 195 static const struct imx_fb_platform_data eukrea_mbimx27_fb_data __initconst = {
 196         .mode = eukrea_mbimx27_modes,
 197         .num_modes = ARRAY_SIZE(eukrea_mbimx27_modes),
 198
 199         .pwmr           = 0x00A903FF,
 200         .lscr1          = 0x00120300,
 201         .dmacr          = 0x00040060,
 202 };
 203
 204 static void eukrea_mbimx27_bl_set_intensity(int intensity)
 205 {
 206         if (intensity)
 207                 gpio_direction_output(GPIO_PORTE | 5, 1);
 208         else
 209                 gpio_direction_output(GPIO_PORTE | 5, 0);
 210 }
 211
 212 static struct generic_bl_info eukrea_mbimx27_bl_info = {
 213         .name                   = "eukrea_mbimx27-bl",
 214         .max_intensity          = 0xff,
 215         .default_intensity      = 0xff,
 216         .set_bl_intensity       = eukrea_mbimx27_bl_set_intensity,
 217 };
 218
 219 static struct platform_device eukrea_mbimx27_bl_dev = {
 220         .name                   = "generic-bl",
 221         .id                     = 1,
 222         .dev = {
 223                 .platform_data  = &eukrea_mbimx27_bl_info,
 224         },
 225 };
 226
 227 static void eukrea_mbimx27_lcd_power_set(struct plat_lcd_data *pd,
 228                                    unsigned int power)
 229 {
 230         if (power)
 231                 gpio_direction_output(GPIO_PORTA | 25, 1);
 232         else
 233                 gpio_direction_output(GPIO_PORTA | 25, 0);
 234 }
 235
 236 static struct plat_lcd_data eukrea_mbimx27_lcd_power_data = {
 237         .set_power              = eukrea_mbimx27_lcd_power_set,
 238 };
 239
 240 static struct platform_device eukrea_mbimx27_lcd_powerdev = {
 241         .name                   = "platform-lcd",
 242         .dev.platform_data      = &eukrea_mbimx27_lcd_power_data,
 243 };
 244
 245 static const struct imxuart_platform_data uart_pdata __initconst = {
 246         .flags = IMXUART_HAVE_RTSCTS,
 247 };
 248
 249 #define ADS7846_PENDOWN (GPIO_PORTD | 25)
 250
 251 static void __maybe_unused ads7846_dev_init(void)
 252 {
 253         if (gpio_request(ADS7846_PENDOWN, "ADS7846 pendown") < 0) {
 254                 printk(KERN_ERR "can't get ads746 pen down GPIO\n");
 255                 return;
 256         }
 257         gpio_direction_input(ADS7846_PENDOWN);
 258 }
 259
 260 static int ads7846_get_pendown_state(void)
 261 {
 262         return !gpio_get_value(ADS7846_PENDOWN);
 263 }
 264
 265 static struct ads7846_platform_data ads7846_config __initdata = {
 266         .get_pendown_state      = ads7846_get_pendown_state,
 267         .keep_vref_on           = 1,
 268 };
 269
 270 static struct spi_board_info __maybe_unused
 271                 eukrea_mbimx27_spi_board_info[] __initdata = {
 272         [0] = {
 273                 .modalias       = "ads7846",
 274                 .bus_num        = 0,
 275                 .chip_select    = 0,
 276                 .max_speed_hz   = 1500000,
 277                 .irq            = IRQ_GPIOD(25),
 278                 .platform_data  = &ads7846_config,
 279                 .mode           = SPI_MODE_2,
 280         },
 281 };
 282
 283 static int eukrea_mbimx27_spi_cs[] = {GPIO_PORTD | 28};
 284
 285 static const struct spi_imx_master eukrea_mbimx27_spi0_data __initconst = {
 286         .chipselect     = eukrea_mbimx27_spi_cs,
 287         .num_chipselect = ARRAY_SIZE(eukrea_mbimx27_spi_cs),
 288 };
 289
 290 static struct i2c_board_info eukrea_mbimx27_i2c_devices[] = {
 291         {
 292                 I2C_BOARD_INFO("tlv320aic23", 0x1a),
 293         },
 294 };
 295
 296 static struct platform_device *platform_devices[] __initdata = {
 297         &leds_gpio,
 298 };
 299
 300 static const struct imxmmc_platform_data sdhc_pdata __initconst = {
 301         .dat3_card_detect = 1,
 302 };
 303
 304 static const
 305 struct imx_ssi_platform_data eukrea_mbimx27_ssi_pdata __initconst = {
 306         .flags = IMX_SSI_DMA | IMX_SSI_USE_I2S_SLAVE,
 307 };
 308
 309 /*
 310  * system init for baseboard usage. Will be called by cpuimx27 init.
 311  *
 312  * Add platform devices present on this baseboard and init
 313  * them from CPU side as far as required to use them later on
 314  */
 315 void __init eukrea_mbimx27_baseboard_init(void)
 316 {
 317         mxc_gpio_setup_multiple_pins(eukrea_mbimx27_pins,
 318                 ARRAY_SIZE(eukrea_mbimx27_pins), "MBIMX27");
 319
 320 #if defined(CONFIG_SND_SOC_EUKREA_TLV320) \
 321         || defined(CONFIG_SND_SOC_EUKREA_TLV320_MODULE)
 322         /* SSI unit master I2S codec connected to SSI_PINS_4*/
 323         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR1_SSI0,
 324                         MXC_AUDMUX_V1_PCR_SYN |
 325                         MXC_AUDMUX_V1_PCR_TFSDIR |
 326                         MXC_AUDMUX_V1_PCR_TCLKDIR |
 327                         MXC_AUDMUX_V1_PCR_RFSDIR |
 328                         MXC_AUDMUX_V1_PCR_RCLKDIR |
 329                         MXC_AUDMUX_V1_PCR_TFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
 330                         MXC_AUDMUX_V1_PCR_RFCSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4) |
 331                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR3_SSI_PINS_4)
 332         );
 333         mxc_audmux_v1_configure_port(MX27_AUDMUX_HPCR3_SSI_PINS_4,
 334                         MXC_AUDMUX_V1_PCR_SYN |
 335                         MXC_AUDMUX_V1_PCR_RXDSEL(MX27_AUDMUX_HPCR1_SSI0)
 336         );
 337 #endif
 338
 339         imx27_add_imx_uart1(&uart_pdata);
 340         imx27_add_imx_uart2(&uart_pdata);
 341 #if !defined(MACH_EUKREA_CPUIMX27_USEUART4)
 342         imx27_add_imx_uart3(&uart_pdata);
 343 #endif
 344
 345         imx27_add_imx_fb(&eukrea_mbimx27_fb_data);
 346         imx27_add_mxc_mmc(0, &sdhc_pdata);
 347
 348         i2c_register_board_info(0, eukrea_mbimx27_i2c_devices,
 349                                 ARRAY_SIZE(eukrea_mbimx27_i2c_devices));
 350
 351         imx27_add_imx_ssi(0, &eukrea_mbimx27_ssi_pdata);
 352
 353 #if defined(CONFIG_TOUCHSCREEN_ADS7846) \
 354         || defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
 355         /* ADS7846 Touchscreen controller init */
 356         mxc_gpio_mode(GPIO_PORTD | 25 | GPIO_GPIO | GPIO_IN);
 357         ads7846_dev_init();
 358 #endif
 359
 360         /* SPI_CS0 init */
 361         mxc_gpio_mode(GPIO_PORTD | 28 | GPIO_GPIO | GPIO_OUT);
 362         imx27_add_spi_imx0(&eukrea_mbimx27_spi0_data);
 363         spi_register_board_info(eukrea_mbimx27_spi_board_info,
 364                         ARRAY_SIZE(eukrea_mbimx27_spi_board_info));
 365
 366         /* Leds configuration */
 367         mxc_gpio_mode(GPIO_PORTF | 16 | GPIO_GPIO | GPIO_OUT);
 368         mxc_gpio_mode(GPIO_PORTF | 19 | GPIO_GPIO | GPIO_OUT);
 369         /* Backlight */
 370         mxc_gpio_mode(GPIO_PORTE | 5 | GPIO_GPIO | GPIO_OUT);
 371         gpio_request(GPIO_PORTE | 5, "backlight");
 372         platform_device_register(&eukrea_mbimx27_bl_dev);
 373         /* LCD Reset */
 374         mxc_gpio_mode(GPIO_PORTA | 25 | GPIO_GPIO | GPIO_OUT);
 375         gpio_request(GPIO_PORTA | 25, "lcd_enable");
 376         platform_device_register(&eukrea_mbimx27_lcd_powerdev);
 377
 378         imx27_add_imx_keypad(&eukrea_mbimx27_keymap_data);
 379
 380         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
 381 }