2 * drivers/gpu/drm/omapdrm/omap_encoder.c
4 * Copyright (C) 2011 Texas Instruments
5 * Author: Rob Clark <rob@ti.com>
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.
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
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/>.
20 #include <drm/drm_edid.h>
25 #include "drm_crtc_helper.h"
27 #include <linux/list.h>
34 #define to_omap_encoder(x) container_of(x, struct omap_encoder, base)
36 /* The encoder and connector both map to same dssdev.. the encoder
37 * handles the 'active' parts, ie. anything the modifies the state
38 * of the hw, and the connector handles the 'read-only' parts, like
39 * detecting connection and reading edid.
42 struct drm_encoder base
;
43 struct omap_dss_device
*dssdev
;
46 struct omap_dss_device
*omap_encoder_get_dssdev(struct drm_encoder
*encoder
)
48 struct omap_encoder
*omap_encoder
= to_omap_encoder(encoder
);
50 return omap_encoder
->dssdev
;
53 static void omap_encoder_destroy(struct drm_encoder
*encoder
)
55 struct omap_encoder
*omap_encoder
= to_omap_encoder(encoder
);
57 omap_encoder_set_enabled(encoder
, false);
59 drm_encoder_cleanup(encoder
);
63 static const struct drm_encoder_funcs omap_encoder_funcs
= {
64 .destroy
= omap_encoder_destroy
,
68 * The CRTC drm_crtc_helper_set_mode() doesn't really give us the right
69 * order.. the easiest way to work around this for now is to make all
70 * the encoder-helper's no-op's and have the omap_crtc code take care
71 * of the sequencing and call us in the right points.
73 * Eventually to handle connecting CRTCs to different encoders properly,
74 * either the CRTC helpers need to change or we need to replace
75 * drm_crtc_helper_set_mode(), but lets wait until atomic-modeset for
79 static void omap_encoder_dpms(struct drm_encoder
*encoder
, int mode
)
83 static bool omap_encoder_mode_fixup(struct drm_encoder
*encoder
,
84 const struct drm_display_mode
*mode
,
85 struct drm_display_mode
*adjusted_mode
)
90 static void omap_encoder_mode_set(struct drm_encoder
*encoder
,
91 struct drm_display_mode
*mode
,
92 struct drm_display_mode
*adjusted_mode
)
94 struct drm_device
*dev
= encoder
->dev
;
95 struct omap_encoder
*omap_encoder
= to_omap_encoder(encoder
);
96 struct omap_dss_device
*dssdev
= omap_encoder
->dssdev
;
97 struct drm_connector
*connector
;
102 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
103 if (connector
->encoder
== encoder
) {
104 hdmi_mode
= omap_connector_get_hdmi_mode(connector
);
109 if (dssdev
->driver
->set_hdmi_mode
)
110 dssdev
->driver
->set_hdmi_mode(dssdev
, hdmi_mode
);
112 if (hdmi_mode
&& dssdev
->driver
->set_hdmi_infoframe
) {
113 struct hdmi_avi_infoframe avi
;
115 r
= drm_hdmi_avi_infoframe_from_display_mode(&avi
, adjusted_mode
);
117 dssdev
->driver
->set_hdmi_infoframe(dssdev
, &avi
);
121 static void omap_encoder_prepare(struct drm_encoder
*encoder
)
125 static void omap_encoder_commit(struct drm_encoder
*encoder
)
129 static const struct drm_encoder_helper_funcs omap_encoder_helper_funcs
= {
130 .dpms
= omap_encoder_dpms
,
131 .mode_fixup
= omap_encoder_mode_fixup
,
132 .mode_set
= omap_encoder_mode_set
,
133 .prepare
= omap_encoder_prepare
,
134 .commit
= omap_encoder_commit
,
138 * Instead of relying on the helpers for modeset, the omap_crtc code
139 * calls these functions in the proper sequence.
142 int omap_encoder_set_enabled(struct drm_encoder
*encoder
, bool enabled
)
144 struct omap_encoder
*omap_encoder
= to_omap_encoder(encoder
);
145 struct omap_dss_device
*dssdev
= omap_encoder
->dssdev
;
146 struct omap_dss_driver
*dssdrv
= dssdev
->driver
;
149 return dssdrv
->enable(dssdev
);
151 dssdrv
->disable(dssdev
);
156 int omap_encoder_update(struct drm_encoder
*encoder
,
157 struct omap_overlay_manager
*mgr
,
158 struct omap_video_timings
*timings
)
160 struct drm_device
*dev
= encoder
->dev
;
161 struct omap_encoder
*omap_encoder
= to_omap_encoder(encoder
);
162 struct omap_dss_device
*dssdev
= omap_encoder
->dssdev
;
163 struct omap_dss_driver
*dssdrv
= dssdev
->driver
;
166 dssdev
->src
->manager
= mgr
;
168 if (dssdrv
->check_timings
) {
169 ret
= dssdrv
->check_timings(dssdev
, timings
);
171 struct omap_video_timings t
= {0};
173 dssdrv
->get_timings(dssdev
, &t
);
175 if (memcmp(timings
, &t
, sizeof(struct omap_video_timings
)))
182 dev_err(dev
->dev
, "could not set timings: %d\n", ret
);
186 if (dssdrv
->set_timings
)
187 dssdrv
->set_timings(dssdev
, timings
);
192 /* initialize encoder */
193 struct drm_encoder
*omap_encoder_init(struct drm_device
*dev
,
194 struct omap_dss_device
*dssdev
)
196 struct drm_encoder
*encoder
= NULL
;
197 struct omap_encoder
*omap_encoder
;
199 omap_encoder
= kzalloc(sizeof(*omap_encoder
), GFP_KERNEL
);
203 omap_encoder
->dssdev
= dssdev
;
205 encoder
= &omap_encoder
->base
;
207 drm_encoder_init(dev
, encoder
, &omap_encoder_funcs
,
208 DRM_MODE_ENCODER_TMDS
);
209 drm_encoder_helper_add(encoder
, &omap_encoder_helper_funcs
);
215 omap_encoder_destroy(encoder
);