2 * LCD panel support for the TI 2430SDP board
4 * Copyright (C) 2007 MontaVista
5 * Author: Hunyue Yau <hyau@mvista.com>
7 * Derived from drivers/video/omap/lcd-apollon.c
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 #include <linux/module.h>
25 #include <linux/platform_device.h>
27 #include <asm/arch/gpio.h>
28 #include <asm/arch/mux.h>
29 #include <asm/arch/omapfb.h>
30 #include <asm/arch/twl4030.h>
32 #define LCD_PANEL_BACKLIGHT_GPIO 91
33 #define LCD_PANEL_ENABLE_GPIO 154
34 #define LCD_PIXCLOCK_MAX 5400 /* freq 5.4 MHz */
35 #define PM_RECEIVER TWL4030_MODULE_PM_RECEIVER
36 #define ENABLE_VAUX2_DEDICATED 0x09
37 #define ENABLE_VAUX2_DEV_GRP 0x20
40 #define t2_out(c, r, v) twl4030_i2c_write_u8(c, r, v)
43 static int sdp2430_panel_init(struct lcd_panel *panel,
44 struct omapfb_device *fbdev)
46 omap_request_gpio(LCD_PANEL_ENABLE_GPIO); /* LCD panel */
47 omap_request_gpio(LCD_PANEL_BACKLIGHT_GPIO); /* LCD backlight */
48 omap_set_gpio_direction(LCD_PANEL_ENABLE_GPIO, 0); /* output */
49 omap_set_gpio_direction(LCD_PANEL_BACKLIGHT_GPIO, 0); /* output */
54 static void sdp2430_panel_cleanup(struct lcd_panel *panel)
58 static int sdp2430_panel_enable(struct lcd_panel *panel)
60 omap_set_gpio_dataout(LCD_PANEL_ENABLE_GPIO, 1);
61 omap_set_gpio_dataout(LCD_PANEL_BACKLIGHT_GPIO, 1);
63 if(0!= t2_out(PM_RECEIVER, ENABLE_VAUX2_DEDICATED,
64 TWL4030_VAUX2_DEDICATED)) return -EIO;
65 if(0!= t2_out(PM_RECEIVER, ENABLE_VAUX2_DEV_GRP,
66 TWL4030_VAUX2_DEV_GRP)) return -EIO;
71 static void sdp2430_panel_disable(struct lcd_panel *panel)
73 omap_set_gpio_dataout(LCD_PANEL_ENABLE_GPIO, 0);
74 omap_set_gpio_dataout(LCD_PANEL_BACKLIGHT_GPIO, 0);
77 static unsigned long sdp2430_panel_get_caps(struct lcd_panel *panel)
82 struct lcd_panel sdp2430_panel = {
84 .config = OMAP_LCDC_PANEL_TFT | OMAP_LCDC_INV_VSYNC |
91 .hsw = 3, /* hsync_len (4) - 1 */
92 .hfp = 3, /* right_margin (4) - 1 */
93 .hbp = 39, /* left_margin (40) - 1 */
94 .vsw = 1, /* vsync_len (2) - 1 */
95 .vfp = 2, /* lower_margin */
96 .vbp = 7, /* upper_margin (8) - 1 */
98 .pixel_clock = LCD_PIXCLOCK_MAX,
100 .init = sdp2430_panel_init,
101 .cleanup = sdp2430_panel_cleanup,
102 .enable = sdp2430_panel_enable,
103 .disable = sdp2430_panel_disable,
104 .get_caps = sdp2430_panel_get_caps,
107 static int sdp2430_panel_probe(struct platform_device *pdev)
109 omapfb_register_panel(&sdp2430_panel);
113 static int sdp2430_panel_remove(struct platform_device *pdev)
118 static int sdp2430_panel_suspend(struct platform_device *pdev, pm_message_t mesg)
123 static int sdp2430_panel_resume(struct platform_device *pdev)
128 struct platform_driver sdp2430_panel_driver = {
129 .probe = sdp2430_panel_probe,
130 .remove = sdp2430_panel_remove,
131 .suspend = sdp2430_panel_suspend,
132 .resume = sdp2430_panel_resume,
134 .name = "sdp2430_lcd",
135 .owner = THIS_MODULE,
139 static int __init sdp2430_panel_drv_init(void)
141 return platform_driver_register(&sdp2430_panel_driver);
144 static void __exit sdp2430_panel_drv_exit(void)
146 platform_driver_unregister(&sdp2430_panel_driver);
149 module_init(sdp2430_panel_drv_init);
150 module_exit(sdp2430_panel_drv_exit);