1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include "edp.h"
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun struct edp_bridge {
9*4882a593Smuzhiyun struct drm_bridge base;
10*4882a593Smuzhiyun struct msm_edp *edp;
11*4882a593Smuzhiyun };
12*4882a593Smuzhiyun #define to_edp_bridge(x) container_of(x, struct edp_bridge, base)
13*4882a593Smuzhiyun
edp_bridge_destroy(struct drm_bridge * bridge)14*4882a593Smuzhiyun void edp_bridge_destroy(struct drm_bridge *bridge)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun }
17*4882a593Smuzhiyun
edp_bridge_pre_enable(struct drm_bridge * bridge)18*4882a593Smuzhiyun static void edp_bridge_pre_enable(struct drm_bridge *bridge)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun struct edp_bridge *edp_bridge = to_edp_bridge(bridge);
21*4882a593Smuzhiyun struct msm_edp *edp = edp_bridge->edp;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun DBG("");
24*4882a593Smuzhiyun msm_edp_ctrl_power(edp->ctrl, true);
25*4882a593Smuzhiyun }
26*4882a593Smuzhiyun
edp_bridge_enable(struct drm_bridge * bridge)27*4882a593Smuzhiyun static void edp_bridge_enable(struct drm_bridge *bridge)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun DBG("");
30*4882a593Smuzhiyun }
31*4882a593Smuzhiyun
edp_bridge_disable(struct drm_bridge * bridge)32*4882a593Smuzhiyun static void edp_bridge_disable(struct drm_bridge *bridge)
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun DBG("");
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
edp_bridge_post_disable(struct drm_bridge * bridge)37*4882a593Smuzhiyun static void edp_bridge_post_disable(struct drm_bridge *bridge)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun struct edp_bridge *edp_bridge = to_edp_bridge(bridge);
40*4882a593Smuzhiyun struct msm_edp *edp = edp_bridge->edp;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun DBG("");
43*4882a593Smuzhiyun msm_edp_ctrl_power(edp->ctrl, false);
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun
edp_bridge_mode_set(struct drm_bridge * bridge,const struct drm_display_mode * mode,const struct drm_display_mode * adjusted_mode)46*4882a593Smuzhiyun static void edp_bridge_mode_set(struct drm_bridge *bridge,
47*4882a593Smuzhiyun const struct drm_display_mode *mode,
48*4882a593Smuzhiyun const struct drm_display_mode *adjusted_mode)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun struct drm_device *dev = bridge->dev;
51*4882a593Smuzhiyun struct drm_connector *connector;
52*4882a593Smuzhiyun struct edp_bridge *edp_bridge = to_edp_bridge(bridge);
53*4882a593Smuzhiyun struct msm_edp *edp = edp_bridge->edp;
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun DBG("set mode: " DRM_MODE_FMT, DRM_MODE_ARG(mode));
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
58*4882a593Smuzhiyun struct drm_encoder *encoder = connector->encoder;
59*4882a593Smuzhiyun struct drm_bridge *first_bridge;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun if (!connector->encoder)
62*4882a593Smuzhiyun continue;
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun first_bridge = drm_bridge_chain_get_first_bridge(encoder);
65*4882a593Smuzhiyun if (bridge == first_bridge) {
66*4882a593Smuzhiyun msm_edp_ctrl_timing_cfg(edp->ctrl,
67*4882a593Smuzhiyun adjusted_mode, &connector->display_info);
68*4882a593Smuzhiyun break;
69*4882a593Smuzhiyun }
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun }
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun static const struct drm_bridge_funcs edp_bridge_funcs = {
74*4882a593Smuzhiyun .pre_enable = edp_bridge_pre_enable,
75*4882a593Smuzhiyun .enable = edp_bridge_enable,
76*4882a593Smuzhiyun .disable = edp_bridge_disable,
77*4882a593Smuzhiyun .post_disable = edp_bridge_post_disable,
78*4882a593Smuzhiyun .mode_set = edp_bridge_mode_set,
79*4882a593Smuzhiyun };
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun /* initialize bridge */
msm_edp_bridge_init(struct msm_edp * edp)82*4882a593Smuzhiyun struct drm_bridge *msm_edp_bridge_init(struct msm_edp *edp)
83*4882a593Smuzhiyun {
84*4882a593Smuzhiyun struct drm_bridge *bridge = NULL;
85*4882a593Smuzhiyun struct edp_bridge *edp_bridge;
86*4882a593Smuzhiyun int ret;
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun edp_bridge = devm_kzalloc(edp->dev->dev,
89*4882a593Smuzhiyun sizeof(*edp_bridge), GFP_KERNEL);
90*4882a593Smuzhiyun if (!edp_bridge) {
91*4882a593Smuzhiyun ret = -ENOMEM;
92*4882a593Smuzhiyun goto fail;
93*4882a593Smuzhiyun }
94*4882a593Smuzhiyun
95*4882a593Smuzhiyun edp_bridge->edp = edp;
96*4882a593Smuzhiyun
97*4882a593Smuzhiyun bridge = &edp_bridge->base;
98*4882a593Smuzhiyun bridge->funcs = &edp_bridge_funcs;
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun ret = drm_bridge_attach(edp->encoder, bridge, NULL, 0);
101*4882a593Smuzhiyun if (ret)
102*4882a593Smuzhiyun goto fail;
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun return bridge;
105*4882a593Smuzhiyun
106*4882a593Smuzhiyun fail:
107*4882a593Smuzhiyun if (bridge)
108*4882a593Smuzhiyun edp_bridge_destroy(bridge);
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun return ERR_PTR(ret);
111*4882a593Smuzhiyun }
112