tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * rcar_du_lvdscon.c -- R-Car Display Unit LVDS Connector
3 *
4 * Copyright (C) 2013 Renesas Corporation
5 *
6 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14#include <drm/drmP.h>
15#include <drm/drm_crtc.h>
16#include <drm/drm_crtc_helper.h>
17
18#include "rcar_du_drv.h"
19#include "rcar_du_encoder.h"
20#include "rcar_du_kms.h"
21#include "rcar_du_lvdscon.h"
22
23struct rcar_du_lvds_connector {
24 struct rcar_du_connector connector;
25
26 const struct rcar_du_panel_data *panel;
27};
28
29#define to_rcar_lvds_connector(c) \
30 container_of(c, struct rcar_du_lvds_connector, connector.connector)
31
32static int rcar_du_lvds_connector_get_modes(struct drm_connector *connector)
33{
34 struct rcar_du_lvds_connector *lvdscon =
35 to_rcar_lvds_connector(connector);
36 struct drm_display_mode *mode;
37
38 mode = drm_mode_create(connector->dev);
39 if (mode == NULL)
40 return 0;
41
42 mode->type = DRM_MODE_TYPE_PREFERRED | DRM_MODE_TYPE_DRIVER;
43 mode->clock = lvdscon->panel->mode.clock;
44 mode->hdisplay = lvdscon->panel->mode.hdisplay;
45 mode->hsync_start = lvdscon->panel->mode.hsync_start;
46 mode->hsync_end = lvdscon->panel->mode.hsync_end;
47 mode->htotal = lvdscon->panel->mode.htotal;
48 mode->vdisplay = lvdscon->panel->mode.vdisplay;
49 mode->vsync_start = lvdscon->panel->mode.vsync_start;
50 mode->vsync_end = lvdscon->panel->mode.vsync_end;
51 mode->vtotal = lvdscon->panel->mode.vtotal;
52 mode->flags = lvdscon->panel->mode.flags;
53
54 drm_mode_set_name(mode);
55 drm_mode_probed_add(connector, mode);
56
57 return 1;
58}
59
60static int rcar_du_lvds_connector_mode_valid(struct drm_connector *connector,
61 struct drm_display_mode *mode)
62{
63 return MODE_OK;
64}
65
66static const struct drm_connector_helper_funcs connector_helper_funcs = {
67 .get_modes = rcar_du_lvds_connector_get_modes,
68 .mode_valid = rcar_du_lvds_connector_mode_valid,
69 .best_encoder = rcar_du_connector_best_encoder,
70};
71
72static void rcar_du_lvds_connector_destroy(struct drm_connector *connector)
73{
74 drm_sysfs_connector_remove(connector);
75 drm_connector_cleanup(connector);
76}
77
78static enum drm_connector_status
79rcar_du_lvds_connector_detect(struct drm_connector *connector, bool force)
80{
81 return connector_status_connected;
82}
83
84static const struct drm_connector_funcs connector_funcs = {
85 .dpms = drm_helper_connector_dpms,
86 .detect = rcar_du_lvds_connector_detect,
87 .fill_modes = drm_helper_probe_single_connector_modes,
88 .destroy = rcar_du_lvds_connector_destroy,
89};
90
91int rcar_du_lvds_connector_init(struct rcar_du_device *rcdu,
92 struct rcar_du_encoder *renc,
93 const struct rcar_du_panel_data *panel)
94{
95 struct rcar_du_lvds_connector *lvdscon;
96 struct drm_connector *connector;
97 int ret;
98
99 lvdscon = devm_kzalloc(rcdu->dev, sizeof(*lvdscon), GFP_KERNEL);
100 if (lvdscon == NULL)
101 return -ENOMEM;
102
103 lvdscon->panel = panel;
104
105 connector = &lvdscon->connector.connector;
106 connector->display_info.width_mm = panel->width_mm;
107 connector->display_info.height_mm = panel->height_mm;
108
109 ret = drm_connector_init(rcdu->ddev, connector, &connector_funcs,
110 DRM_MODE_CONNECTOR_LVDS);
111 if (ret < 0)
112 return ret;
113
114 drm_connector_helper_add(connector, &connector_helper_funcs);
115 ret = drm_sysfs_connector_add(connector);
116 if (ret < 0)
117 return ret;
118
119 drm_helper_connector_dpms(connector, DRM_MODE_DPMS_OFF);
120 drm_object_property_set_value(&connector->base,
121 rcdu->ddev->mode_config.dpms_property, DRM_MODE_DPMS_OFF);
122
123 ret = drm_mode_connector_attach_encoder(connector, &renc->encoder);
124 if (ret < 0)
125 return ret;
126
127 connector->encoder = &renc->encoder;
128 lvdscon->connector.encoder = renc;
129
130 return 0;
131}