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107cc64b DB |
1 | /* |
2 | * LCD panel support for the TI OMAP OSK board | |
3 | * | |
4 | * Copyright (C) 2004 Nokia Corporation | |
5 | * Author: Imre Deak <imre.deak@nokia.com> | |
6 | * Adapted for OSK by <dirk.behme@de.bosch.com> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2 of the License, or (at your | |
11 | * option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; if not, write to the Free Software Foundation, Inc., | |
20 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #include <linux/module.h> | |
24 | #include <linux/platform_device.h> | |
25 | ||
26 | #include <asm/arch/gpio.h> | |
27 | #include <asm/arch/mux.h> | |
28 | #include <asm/arch/omapfb.h> | |
29 | ||
30 | static int osk_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev) | |
31 | { | |
32 | return 0; | |
33 | } | |
34 | ||
35 | static void osk_panel_cleanup(struct lcd_panel *panel) | |
36 | { | |
37 | } | |
38 | ||
39 | static int osk_panel_enable(struct lcd_panel *panel) | |
40 | { | |
41 | /* configure PWL pin */ | |
42 | omap_cfg_reg(PWL); | |
43 | ||
44 | /* Enable PWL unit */ | |
45 | omap_writeb(0x01, OMAP_PWL_CLK_ENABLE); | |
46 | ||
47 | /* Set PWL level */ | |
48 | omap_writeb(0xFF, OMAP_PWL_ENABLE); | |
49 | ||
50 | /* configure GPIO2 as output */ | |
51 | omap_set_gpio_direction(2, 0); | |
52 | ||
53 | /* set GPIO2 high */ | |
54 | omap_set_gpio_dataout(2, 1); | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | static void osk_panel_disable(struct lcd_panel *panel) | |
60 | { | |
61 | /* Set PWL level to zero */ | |
62 | omap_writeb(0x00, OMAP_PWL_ENABLE); | |
63 | ||
64 | /* Disable PWL unit */ | |
65 | omap_writeb(0x00, OMAP_PWL_CLK_ENABLE); | |
66 | ||
67 | /* set GPIO2 low */ | |
68 | omap_set_gpio_dataout(2, 0); | |
69 | } | |
70 | ||
71 | static unsigned long osk_panel_get_caps(struct lcd_panel *panel) | |
72 | { | |
73 | return 0; | |
74 | } | |
75 | ||
76 | struct lcd_panel osk_panel = { | |
77 | .name = "osk", | |
78 | .config = OMAP_LCDC_PANEL_TFT, | |
79 | ||
80 | .bpp = 16, | |
81 | .data_lines = 16, | |
82 | .x_res = 240, | |
83 | .y_res = 320, | |
84 | .pixel_clock = 12500, | |
85 | .hsw = 40, | |
86 | .hfp = 40, | |
87 | .hbp = 72, | |
88 | .vsw = 1, | |
89 | .vfp = 1, | |
90 | .vbp = 0, | |
91 | .pcd = 12, | |
92 | ||
93 | .init = osk_panel_init, | |
94 | .cleanup = osk_panel_cleanup, | |
95 | .enable = osk_panel_enable, | |
96 | .disable = osk_panel_disable, | |
97 | .get_caps = osk_panel_get_caps, | |
98 | }; | |
99 | ||
100 | static int osk_panel_probe(struct platform_device *pdev) | |
101 | { | |
102 | omapfb_register_panel(&osk_panel); | |
103 | return 0; | |
104 | } | |
105 | ||
106 | static int osk_panel_remove(struct platform_device *pdev) | |
107 | { | |
108 | return 0; | |
109 | } | |
110 | ||
111 | static int osk_panel_suspend(struct platform_device *pdev, pm_message_t mesg) | |
112 | { | |
113 | return 0; | |
114 | } | |
115 | ||
116 | static int osk_panel_resume(struct platform_device *pdev) | |
117 | { | |
118 | return 0; | |
119 | } | |
120 | ||
121 | struct platform_driver osk_panel_driver = { | |
122 | .probe = osk_panel_probe, | |
123 | .remove = osk_panel_remove, | |
124 | .suspend = osk_panel_suspend, | |
125 | .resume = osk_panel_resume, | |
126 | .driver = { | |
127 | .name = "lcd_osk", | |
128 | .owner = THIS_MODULE, | |
129 | }, | |
130 | }; | |
131 | ||
132 | static int osk_panel_drv_init(void) | |
133 | { | |
134 | return platform_driver_register(&osk_panel_driver); | |
135 | } | |
136 | ||
137 | static void osk_panel_drv_cleanup(void) | |
138 | { | |
139 | platform_driver_unregister(&osk_panel_driver); | |
140 | } | |
141 | ||
142 | module_init(osk_panel_drv_init); | |
143 | module_exit(osk_panel_drv_cleanup); | |
144 |