2 * LCD panel support for the Gumstix Overo
4 * Author: Steve Sakoman <steve@sakoman.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 #include <linux/module.h>
23 #include <linux/platform_device.h>
24 #include <linux/i2c/twl.h>
26 #include <mach/gpio.h>
28 #include <asm/mach-types.h>
32 #define LCD_ENABLE 144
34 static int overo_panel_init(struct lcd_panel *panel,
35 struct omapfb_device *fbdev)
37 if ((gpio_request(LCD_ENABLE, "LCD_ENABLE") == 0) &&
38 (gpio_direction_output(LCD_ENABLE, 1) == 0))
39 gpio_export(LCD_ENABLE, 0);
41 printk(KERN_ERR "could not obtain gpio for LCD_ENABLE\n");
46 static void overo_panel_cleanup(struct lcd_panel *panel)
48 gpio_free(LCD_ENABLE);
51 static int overo_panel_enable(struct lcd_panel *panel)
53 gpio_set_value(LCD_ENABLE, 1);
57 static void overo_panel_disable(struct lcd_panel *panel)
59 gpio_set_value(LCD_ENABLE, 0);
62 static unsigned long overo_panel_get_caps(struct lcd_panel *panel)
67 struct lcd_panel overo_panel = {
69 .config = OMAP_LCDC_PANEL_TFT,
73 #if defined CONFIG_FB_OMAP_031M3R
75 /* 640 x 480 @ 60 Hz Reduced blanking VESA CVT 0.31M3-R */
86 #elif defined CONFIG_FB_OMAP_048M3R
88 /* 800 x 600 @ 60 Hz Reduced blanking VESA CVT 0.48M3-R */
99 #elif defined CONFIG_FB_OMAP_079M3R
101 /* 1024 x 768 @ 60 Hz Reduced blanking VESA CVT 0.79M3-R */
110 .pixel_clock = 56000,
112 #elif defined CONFIG_FB_OMAP_092M9R
114 /* 1280 x 720 @ 60 Hz Reduced blanking VESA CVT 0.92M9-R */
123 .pixel_clock = 64000,
127 /* use 640 x 480 if no config option */
128 /* 640 x 480 @ 60 Hz Reduced blanking VESA CVT 0.31M3-R */
137 .pixel_clock = 23500,
141 .init = overo_panel_init,
142 .cleanup = overo_panel_cleanup,
143 .enable = overo_panel_enable,
144 .disable = overo_panel_disable,
145 .get_caps = overo_panel_get_caps,
148 static int overo_panel_probe(struct platform_device *pdev)
150 omapfb_register_panel(&overo_panel);
154 static int overo_panel_remove(struct platform_device *pdev)
156 /* omapfb does not have unregister_panel */
160 static struct platform_driver overo_panel_driver = {
161 .probe = overo_panel_probe,
162 .remove = overo_panel_remove,
165 .owner = THIS_MODULE,
169 static int __init overo_panel_drv_init(void)
171 return platform_driver_register(&overo_panel_driver);
174 static void __exit overo_panel_drv_exit(void)
176 platform_driver_unregister(&overo_panel_driver);
179 module_init(overo_panel_drv_init);
180 module_exit(overo_panel_drv_exit);