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authorLinus Torvalds <torvalds@linux-foundation.org>2011-03-24 10:56:52 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-03-24 10:56:52 -0400
commit4cc4d24efce4672f9b0e7fa27963770ae602998f (patch)
treee69e7209db5500164eedb82c46ea657499b72287 /drivers/video/omap2/dss/hdmi_omap4_panel.c
parentb81a618dcd3ea99de292dbe624f41ca68f464376 (diff)
parent56be1416453c31d32f984328b5193489ab63ffcf (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-2.6: (140 commits) MAINTAINERS: de-orphan fbdev. MAINTAINERS: Add file pattern for fb dt bindings. video: Move sm501fb devicetree binding documentation to a better place. fbcon: fix situation where fbcon gets deinitialised and can't reinit. video, sm501: add OF binding to support SM501 video, sm501: add edid and commandline support video, sm501: add I/O functions for use on powerpc video: Fix EDID macros H_SYNC_WIDTH and H_SYNC_OFFSET fbcon: Bugfix soft cursor detection in Tile Blitting video: add missing framebuffer_release in error path video: metronomefb: add __devexit_p around reference to metronomefb_remove video: hecubafb: add __devexit_p around reference to hecubafb_remove drivers:video:aty:radeon_base Fix typo occationally to occasionally atmel_lcdfb: add fb_blank function atmel_lcdfb: implement inverted contrast pwm video: s3c-fb: return proper error if clk_get fails uvesafb,vesafb: create WC or WB PAT-entries video: ffb: fix ffb_probe error path radeonfb: Let hwmon driver probe the "monid" I2C bus fbdev: sh_mobile_lcdc: checking NULL instead of IS_ERR() ...
Diffstat (limited to 'drivers/video/omap2/dss/hdmi_omap4_panel.c')
-rw-r--r--drivers/video/omap2/dss/hdmi_omap4_panel.c222
1 files changed, 222 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/hdmi_omap4_panel.c b/drivers/video/omap2/dss/hdmi_omap4_panel.c
new file mode 100644
index 00000000000..ffb5de94131
--- /dev/null
+++ b/drivers/video/omap2/dss/hdmi_omap4_panel.c
@@ -0,0 +1,222 @@
1/*
2 * hdmi_omap4_panel.c
3 *
4 * HDMI library support functions for TI OMAP4 processors.
5 *
6 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
7 * Authors: Mythri P k <mythripk@ti.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License version 2 as published by
11 * the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * more details.
17 *
18 * You should have received a copy of the GNU General Public License along with
19 * this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22#include <linux/kernel.h>
23#include <linux/err.h>
24#include <linux/io.h>
25#include <linux/mutex.h>
26#include <linux/module.h>
27#include <plat/display.h>
28
29#include "dss.h"
30
31static struct {
32 struct mutex hdmi_lock;
33} hdmi;
34
35
36static int hdmi_panel_probe(struct omap_dss_device *dssdev)
37{
38 DSSDBG("ENTER hdmi_panel_probe\n");
39
40 dssdev->panel.config = OMAP_DSS_LCD_TFT |
41 OMAP_DSS_LCD_IVS | OMAP_DSS_LCD_IHS;
42
43 /*
44 * Initialize the timings to 640 * 480
45 * This is only for framebuffer update not for TV timing setting
46 * Setting TV timing will be done only on enable
47 */
48 dssdev->panel.timings.x_res = 640;
49 dssdev->panel.timings.y_res = 480;
50
51 DSSDBG("hdmi_panel_probe x_res= %d y_res = %d\n",
52 dssdev->panel.timings.x_res,
53 dssdev->panel.timings.y_res);
54 return 0;
55}
56
57static void hdmi_panel_remove(struct omap_dss_device *dssdev)
58{
59
60}
61
62static int hdmi_panel_enable(struct omap_dss_device *dssdev)
63{
64 int r = 0;
65 DSSDBG("ENTER hdmi_panel_enable\n");
66
67 mutex_lock(&hdmi.hdmi_lock);
68
69 if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
70 r = -EINVAL;
71 goto err;
72 }
73
74 r = omapdss_hdmi_display_enable(dssdev);
75 if (r) {
76 DSSERR("failed to power on\n");
77 goto err;
78 }
79
80 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
81
82err:
83 mutex_unlock(&hdmi.hdmi_lock);
84
85 return r;
86}
87
88static void hdmi_panel_disable(struct omap_dss_device *dssdev)
89{
90 mutex_lock(&hdmi.hdmi_lock);
91
92 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE)
93 omapdss_hdmi_display_disable(dssdev);
94
95 dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
96
97 mutex_unlock(&hdmi.hdmi_lock);
98}
99
100static int hdmi_panel_suspend(struct omap_dss_device *dssdev)
101{
102 int r = 0;
103
104 mutex_lock(&hdmi.hdmi_lock);
105
106 if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) {
107 r = -EINVAL;
108 goto err;
109 }
110
111 dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED;
112
113 omapdss_hdmi_display_disable(dssdev);
114
115err:
116 mutex_unlock(&hdmi.hdmi_lock);
117
118 return r;
119}
120
121static int hdmi_panel_resume(struct omap_dss_device *dssdev)
122{
123 int r = 0;
124
125 mutex_lock(&hdmi.hdmi_lock);
126
127 if (dssdev->state != OMAP_DSS_DISPLAY_SUSPENDED) {
128 r = -EINVAL;
129 goto err;
130 }
131
132 r = omapdss_hdmi_display_enable(dssdev);
133 if (r) {
134 DSSERR("failed to power on\n");
135 goto err;
136 }
137
138 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
139
140err:
141 mutex_unlock(&hdmi.hdmi_lock);
142
143 return r;
144}
145
146static void hdmi_get_timings(struct omap_dss_device *dssdev,
147 struct omap_video_timings *timings)
148{
149 mutex_lock(&hdmi.hdmi_lock);
150
151 *timings = dssdev->panel.timings;
152
153 mutex_unlock(&hdmi.hdmi_lock);
154}
155
156static void hdmi_set_timings(struct omap_dss_device *dssdev,
157 struct omap_video_timings *timings)
158{
159 DSSDBG("hdmi_set_timings\n");
160
161 mutex_lock(&hdmi.hdmi_lock);
162
163 dssdev->panel.timings = *timings;
164
165 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
166 /* turn the hdmi off and on to get new timings to use */
167 omapdss_hdmi_display_disable(dssdev);
168 omapdss_hdmi_display_set_timing(dssdev);
169 }
170
171 mutex_unlock(&hdmi.hdmi_lock);
172}
173
174static int hdmi_check_timings(struct omap_dss_device *dssdev,
175 struct omap_video_timings *timings)
176{
177 int r = 0;
178
179 DSSDBG("hdmi_check_timings\n");
180
181 mutex_lock(&hdmi.hdmi_lock);
182
183 r = omapdss_hdmi_display_check_timing(dssdev, timings);
184 if (r) {
185 DSSERR("Timing cannot be applied\n");
186 goto err;
187 }
188err:
189 mutex_unlock(&hdmi.hdmi_lock);
190 return r;
191}
192
193static struct omap_dss_driver hdmi_driver = {
194 .probe = hdmi_panel_probe,
195 .remove = hdmi_panel_remove,
196 .enable = hdmi_panel_enable,
197 .disable = hdmi_panel_disable,
198 .suspend = hdmi_panel_suspend,
199 .resume = hdmi_panel_resume,
200 .get_timings = hdmi_get_timings,
201 .set_timings = hdmi_set_timings,
202 .check_timings = hdmi_check_timings,
203 .driver = {
204 .name = "hdmi_panel",
205 .owner = THIS_MODULE,
206 },
207};
208
209int hdmi_panel_init(void)
210{
211 mutex_init(&hdmi.hdmi_lock);
212
213 omap_dss_register_driver(&hdmi_driver);
214
215 return 0;
216}
217
218void hdmi_panel_exit(void)
219{
220 omap_dss_unregister_driver(&hdmi_driver);
221
222}