1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
/* $OpenBSD: rkanxdp.c,v 1.4 2020/06/08 04:47:58 jsg Exp $ */
/* $NetBSD: rk_anxdp.c,v 1.2 2020/01/04 12:08:32 jmcneill Exp $ */
/*-
* Copyright (c) 2019 Jonathan A. Kollasch <jakllsch@kollasch.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <machine/bus.h>
#include <machine/fdt.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_clock.h>
#include <dev/ofw/ofw_gpio.h>
#include <dev/ofw/ofw_misc.h>
#include <dev/ofw/ofw_pinctrl.h>
#include <dev/ofw/fdt.h>
#include <drm/drm_crtc_helper.h>
#include <dev/ic/anxdp.h>
#define RK3399_GRF_SOC_CON20 0x6250
#define EDP_LCDC_SEL (1 << 5)
enum {
ANXDP_PORT_INPUT = 0,
ANXDP_PORT_OUTPUT = 1,
};
struct rkanxdp_softc {
struct anxdp_softc sc_base;
struct drm_encoder sc_encoder;
struct drm_display_mode sc_curmode;
struct regmap *sc_grf;
int sc_activated;
struct device_ports sc_ports;
};
#define to_rkanxdp_softc(x) container_of(x, struct rkanxdp_softc, sc_base)
#define to_rkanxdp_encoder(x) container_of(x, struct rkanxdp_softc, sc_encoder)
int rkanxdp_match(struct device *, void *, void *);
void rkanxdp_attach(struct device *, struct device *, void *);
void rkanxdp_select_input(struct rkanxdp_softc *, u_int);
void rkanxdp_encoder_enable(struct drm_encoder *);
void rkanxdp_encoder_dpms(struct drm_encoder *, int);
int rkanxdp_ep_activate(void *, struct endpoint *, void *);
void *rkanxdp_ep_get_cookie(void *, struct endpoint *);
struct cfattach rkanxdp_ca = {
sizeof (struct rkanxdp_softc), rkanxdp_match, rkanxdp_attach
};
struct cfdriver rkanxdp_cd = {
NULL, "rkanxdp", DV_DULL
};
int
rkanxdp_match(struct device *parent, void *match, void *aux)
{
struct fdt_attach_args *faa = aux;
return OF_is_compatible(faa->fa_node, "rockchip,rk3399-edp");
}
void
rkanxdp_attach(struct device *parent, struct device *self, void *aux)
{
struct rkanxdp_softc *sc = (struct rkanxdp_softc *)self;
struct fdt_attach_args *faa = aux;
uint32_t grf;
if (faa->fa_nreg < 1) {
printf(": no registers\n");
return;
}
pinctrl_byname(faa->fa_node, "default");
reset_deassert(faa->fa_node, "dp");
clock_enable(faa->fa_node, "pclk");
clock_enable(faa->fa_node, "dp");
clock_enable(faa->fa_node, "grf");
sc->sc_base.sc_iot = faa->fa_iot;
if (bus_space_map(sc->sc_base.sc_iot, faa->fa_reg[0].addr,
faa->fa_reg[0].size, 0, &sc->sc_base.sc_ioh)) {
printf(": can't map registers\n");
return;
}
grf = OF_getpropint(faa->fa_node, "rockchip,grf", 0);
sc->sc_grf = regmap_byphandle(grf);
if (sc->sc_grf == NULL) {
printf(": can't get grf\n");
return;
}
printf(": eDP TX\n");
sc->sc_base.sc_flags |= ANXDP_FLAG_ROCKCHIP;
if (anxdp_attach(&sc->sc_base) != 0) {
printf("%s: failed to attach driver\n",
sc->sc_base.sc_dev.dv_xname);
return;
}
sc->sc_ports.dp_node = faa->fa_node;
sc->sc_ports.dp_cookie = sc;
sc->sc_ports.dp_ep_activate = rkanxdp_ep_activate;
sc->sc_ports.dp_ep_get_cookie = rkanxdp_ep_get_cookie;
device_ports_register(&sc->sc_ports, EP_DRM_ENCODER);
}
void
rkanxdp_select_input(struct rkanxdp_softc *sc, u_int crtc_index)
{
uint32_t write_mask = EDP_LCDC_SEL << 16;
uint32_t write_val = crtc_index == 0 ? EDP_LCDC_SEL : 0;
regmap_write_4(sc->sc_grf, RK3399_GRF_SOC_CON20, write_mask | write_val);
}
void
rkanxdp_encoder_enable(struct drm_encoder *encoder)
{
struct rkanxdp_softc *sc = to_rkanxdp_encoder(encoder);
u_int crtc_index = drm_crtc_index(encoder->crtc);
rkanxdp_select_input(sc, crtc_index);
}
void
rkanxdp_encoder_dpms(struct drm_encoder *encoder, int mode)
{
struct rkanxdp_softc *sc = to_rkanxdp_encoder(encoder);
anxdp_dpms(&sc->sc_base, mode);
}
struct drm_encoder_funcs rkanxdp_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
struct drm_encoder_helper_funcs rkanxdp_encoder_helper_funcs = {
.enable = rkanxdp_encoder_enable,
.dpms = rkanxdp_encoder_dpms,
};
int
rkanxdp_ep_activate(void *cookie, struct endpoint *ep, void *arg)
{
struct rkanxdp_softc *sc = cookie;
struct drm_crtc *crtc = NULL;
struct endpoint *rep;
int error;
if (sc->sc_activated)
return 0;
if (ep->ep_port->dp_reg != ANXDP_PORT_INPUT)
return EINVAL;
rep = endpoint_remote(ep);
if (rep && rep->ep_type == EP_DRM_CRTC)
crtc = endpoint_get_cookie(rep);
if (crtc == NULL)
return EINVAL;
sc->sc_encoder.possible_crtcs = 0x3; /* XXX */
drm_encoder_init(crtc->dev, &sc->sc_encoder, &rkanxdp_encoder_funcs,
DRM_MODE_ENCODER_TMDS, NULL);
drm_encoder_helper_add(&sc->sc_encoder, &rkanxdp_encoder_helper_funcs);
ep = endpoint_byreg(&sc->sc_ports, ANXDP_PORT_OUTPUT, 0);
if (ep) {
rep = endpoint_remote(ep);
if (rep && rep->ep_type == EP_DRM_PANEL)
sc->sc_base.sc_panel = endpoint_get_cookie(rep);
}
sc->sc_base.sc_connector.base.connector_type = DRM_MODE_CONNECTOR_eDP;
error = anxdp_bind(&sc->sc_base, &sc->sc_encoder);
if (error != 0)
return error;
sc->sc_activated = 1;
return 0;
}
void *
rkanxdp_ep_get_cookie(void *cookie, struct endpoint *ep)
{
struct rkanxdp_softc *sc = cookie;
return &sc->sc_encoder;
}
|
