1 /*
2 * drivers/staging/omapdrm/omap_encoder.c
3 *
4 * Copyright (C) 2011 Texas Instruments
5 * Author: Rob Clark <rob@ti.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "omap_drv.h"
21
22 #include "drm_crtc.h"
23 #include "drm_crtc_helper.h"
24
25 /*
26 * encoder funcs
27 */
28
29 #define to_omap_encoder(x) container_of(x, struct omap_encoder, base)
30
31 struct omap_encoder {
32 struct drm_encoder base;
33 struct omap_overlay_manager *mgr;
34 };
35
omap_encoder_destroy(struct drm_encoder * encoder)36 static void omap_encoder_destroy(struct drm_encoder *encoder)
37 {
38 struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
39 DBG("%s", omap_encoder->mgr->name);
40 drm_encoder_cleanup(encoder);
41 kfree(omap_encoder);
42 }
43
omap_encoder_dpms(struct drm_encoder * encoder,int mode)44 static void omap_encoder_dpms(struct drm_encoder *encoder, int mode)
45 {
46 struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
47 DBG("%s: %d", omap_encoder->mgr->name, mode);
48 }
49
omap_encoder_mode_fixup(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)50 static bool omap_encoder_mode_fixup(struct drm_encoder *encoder,
51 struct drm_display_mode *mode,
52 struct drm_display_mode *adjusted_mode)
53 {
54 struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
55 DBG("%s", omap_encoder->mgr->name);
56 return true;
57 }
58
omap_encoder_mode_set(struct drm_encoder * encoder,struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)59 static void omap_encoder_mode_set(struct drm_encoder *encoder,
60 struct drm_display_mode *mode,
61 struct drm_display_mode *adjusted_mode)
62 {
63 struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
64 struct drm_device *dev = encoder->dev;
65 struct omap_drm_private *priv = dev->dev_private;
66 int i;
67
68 mode = adjusted_mode;
69
70 DBG("%s: set mode: %dx%d", omap_encoder->mgr->name,
71 mode->hdisplay, mode->vdisplay);
72
73 for (i = 0; i < priv->num_connectors; i++) {
74 struct drm_connector *connector = priv->connectors[i];
75 if (connector->encoder == encoder) {
76 omap_connector_mode_set(connector, mode);
77 }
78 }
79 }
80
omap_encoder_prepare(struct drm_encoder * encoder)81 static void omap_encoder_prepare(struct drm_encoder *encoder)
82 {
83 struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
84 struct drm_encoder_helper_funcs *encoder_funcs =
85 encoder->helper_private;
86 DBG("%s", omap_encoder->mgr->name);
87 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
88 }
89
omap_encoder_commit(struct drm_encoder * encoder)90 static void omap_encoder_commit(struct drm_encoder *encoder)
91 {
92 struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
93 struct drm_encoder_helper_funcs *encoder_funcs =
94 encoder->helper_private;
95 DBG("%s", omap_encoder->mgr->name);
96 omap_encoder->mgr->apply(omap_encoder->mgr);
97 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
98 }
99
100 static const struct drm_encoder_funcs omap_encoder_funcs = {
101 .destroy = omap_encoder_destroy,
102 };
103
104 static const struct drm_encoder_helper_funcs omap_encoder_helper_funcs = {
105 .dpms = omap_encoder_dpms,
106 .mode_fixup = omap_encoder_mode_fixup,
107 .mode_set = omap_encoder_mode_set,
108 .prepare = omap_encoder_prepare,
109 .commit = omap_encoder_commit,
110 };
111
omap_encoder_get_manager(struct drm_encoder * encoder)112 struct omap_overlay_manager *omap_encoder_get_manager(
113 struct drm_encoder *encoder)
114 {
115 struct omap_encoder *omap_encoder = to_omap_encoder(encoder);
116 return omap_encoder->mgr;
117 }
118
119 /* initialize encoder */
omap_encoder_init(struct drm_device * dev,struct omap_overlay_manager * mgr)120 struct drm_encoder *omap_encoder_init(struct drm_device *dev,
121 struct omap_overlay_manager *mgr)
122 {
123 struct drm_encoder *encoder = NULL;
124 struct omap_encoder *omap_encoder;
125 struct omap_overlay_manager_info info;
126 int ret;
127
128 DBG("%s", mgr->name);
129
130 omap_encoder = kzalloc(sizeof(*omap_encoder), GFP_KERNEL);
131 if (!omap_encoder) {
132 dev_err(dev->dev, "could not allocate encoder\n");
133 goto fail;
134 }
135
136 omap_encoder->mgr = mgr;
137 encoder = &omap_encoder->base;
138
139 drm_encoder_init(dev, encoder, &omap_encoder_funcs,
140 DRM_MODE_ENCODER_TMDS);
141 drm_encoder_helper_add(encoder, &omap_encoder_helper_funcs);
142
143 mgr->get_manager_info(mgr, &info);
144
145 /* TODO: fix hard-coded setup.. */
146 info.default_color = 0x00000000;
147 info.trans_key = 0x00000000;
148 info.trans_key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
149 info.trans_enabled = false;
150
151 ret = mgr->set_manager_info(mgr, &info);
152 if (ret) {
153 dev_err(dev->dev, "could not set manager info\n");
154 goto fail;
155 }
156
157 ret = mgr->apply(mgr);
158 if (ret) {
159 dev_err(dev->dev, "could not apply\n");
160 goto fail;
161 }
162
163 return encoder;
164
165 fail:
166 if (encoder) {
167 omap_encoder_destroy(encoder);
168 }
169
170 return NULL;
171 }
172