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 */
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>
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)
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 };
51 void setup_iomux_lcd(void)
52 {
53 /* DI2_PIN15 */
54 mxc_request_iomux(MX51_PIN_DI_GP4, IOMUX_CONFIG_ALT4);
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);
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);
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);
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 }
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 }