1 /* 2 * Copyright (C) 2012 Freescale Semiconductor, Inc. 3 * Fabio Estevam <fabio.estevam@freescale.com> 4 * 5 * See file CREDITS for list of people who contributed to this 6 * project. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License as 10 * published by the Free Software Foundation; either version 2 of 11 * the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 21 * MA 02111-1307 USA 22 */ 23 24 #include <common.h> 25 #include <linux/list.h> 26 #include <asm/gpio.h> 27 #include <asm/arch/iomux.h> 28 #include <linux/fb.h> 29 #include <ipu_pixfmt.h> 30 31 #define MX51EVK_LCD_3V3 IMX_GPIO_NR(4, 9) 32 #define MX51EVK_LCD_5V IMX_GPIO_NR(4, 10) 33 #define MX51EVK_LCD_BACKLIGHT IMX_GPIO_NR(3, 4) 34 35 static struct fb_videomode const claa_wvga = { 36 .name = "CLAA07LC0ACW", 37 .refresh = 57, 38 .xres = 800, 39 .yres = 480, 40 .pixclock = 37037, 41 .left_margin = 40, 42 .right_margin = 60, 43 .upper_margin = 10, 44 .lower_margin = 10, 45 .hsync_len = 20, 46 .vsync_len = 10, 47 .sync = 0, 48 .vmode = FB_VMODE_NONINTERLACED 49 }; 50 51 void setup_iomux_lcd(void) 52 { 53 /* DI2_PIN15 */ 54 mxc_request_iomux(MX51_PIN_DI_GP4, IOMUX_CONFIG_ALT4); 55 56 /* Pad settings for MX51_PIN_DI2_DISP_CLK */ 57 mxc_iomux_set_pad(MX51_PIN_DI2_DISP_CLK, PAD_CTL_HYS_NONE | 58 PAD_CTL_PKE_ENABLE | PAD_CTL_PUE_KEEPER | 59 PAD_CTL_DRV_MAX | PAD_CTL_SRE_SLOW); 60 61 /* Turn on 3.3V voltage for LCD */ 62 mxc_request_iomux(MX51_PIN_CSI2_D12, IOMUX_CONFIG_ALT3); 63 gpio_direction_output(MX51EVK_LCD_3V3, 1); 64 65 /* Turn on 5V voltage for LCD */ 66 mxc_request_iomux(MX51_PIN_CSI2_D13, IOMUX_CONFIG_ALT3); 67 gpio_direction_output(MX51EVK_LCD_5V, 1); 68 69 /* Turn on GPIO backlight */ 70 mxc_request_iomux(MX51_PIN_DI1_D1_CS, IOMUX_CONFIG_ALT4); 71 mxc_iomux_set_input(MX51_GPIO3_IPP_IND_G_IN_4_SELECT_INPUT, 72 INPUT_CTL_PATH1); 73 gpio_direction_output(MX51EVK_LCD_BACKLIGHT, 1); 74 } 75 76 void lcd_enable(void) 77 { 78 int ret = ipuv3_fb_init(&claa_wvga, 1, IPU_PIX_FMT_RGB565); 79 if (ret) 80 printf("LCD cannot be configured: %d\n", ret); 81 } 82