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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt)"[drm-dp] %s: " fmt, __func__
#include <linux/debugfs.h>
#include <drm/drm_connector.h>
#include <drm/drm_file.h>
#include "dp_parser.h"
#include "dp_catalog.h"
#include "dp_aux.h"
#include "dp_ctrl.h"
#include "dp_debug.h"
#include "dp_display.h"
#define DEBUG_NAME "msm_dp"
struct dp_debug_private {
struct dp_link *link;
struct dp_panel *panel;
struct drm_connector *connector;
struct dp_debug dp_debug;
};
static int dp_debug_show(struct seq_file *seq, void *p)
{
struct dp_debug_private *debug = seq->private;
u64 lclk = 0;
u32 link_params_rate;
const struct drm_display_mode *drm_mode;
if (!debug)
return -ENODEV;
drm_mode = &debug->panel->dp_mode.drm_mode;
seq_printf(seq, "\tname = %s\n", DEBUG_NAME);
seq_printf(seq, "\tdrm_dp_link\n\t\trate = %u\n",
debug->panel->link_info.rate);
seq_printf(seq, "\t\tnum_lanes = %u\n",
debug->panel->link_info.num_lanes);
seq_printf(seq, "\t\tcapabilities = %lu\n",
debug->panel->link_info.capabilities);
seq_printf(seq, "\tdp_panel_info:\n\t\tactive = %dx%d\n",
drm_mode->hdisplay,
drm_mode->vdisplay);
seq_printf(seq, "\t\tback_porch = %dx%d\n",
drm_mode->htotal - drm_mode->hsync_end,
drm_mode->vtotal - drm_mode->vsync_end);
seq_printf(seq, "\t\tfront_porch = %dx%d\n",
drm_mode->hsync_start - drm_mode->hdisplay,
drm_mode->vsync_start - drm_mode->vdisplay);
seq_printf(seq, "\t\tsync_width = %dx%d\n",
drm_mode->hsync_end - drm_mode->hsync_start,
drm_mode->vsync_end - drm_mode->vsync_start);
seq_printf(seq, "\t\tactive_low = %dx%d\n",
debug->panel->dp_mode.h_active_low,
debug->panel->dp_mode.v_active_low);
seq_printf(seq, "\t\th_skew = %d\n",
drm_mode->hskew);
seq_printf(seq, "\t\trefresh rate = %d\n",
drm_mode_vrefresh(drm_mode));
seq_printf(seq, "\t\tpixel clock khz = %d\n",
drm_mode->clock);
seq_printf(seq, "\t\tbpp = %d\n",
debug->panel->dp_mode.bpp);
/* Link Information */
seq_printf(seq, "\tdp_link:\n\t\ttest_requested = %d\n",
debug->link->sink_request);
seq_printf(seq, "\t\tnum_lanes = %d\n",
debug->link->link_params.num_lanes);
link_params_rate = debug->link->link_params.rate;
seq_printf(seq, "\t\tbw_code = %d\n",
drm_dp_link_rate_to_bw_code(link_params_rate));
lclk = debug->link->link_params.rate * 1000;
seq_printf(seq, "\t\tlclk = %lld\n", lclk);
seq_printf(seq, "\t\tv_level = %d\n",
debug->link->phy_params.v_level);
seq_printf(seq, "\t\tp_level = %d\n",
debug->link->phy_params.p_level);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(dp_debug);
static int dp_test_data_show(struct seq_file *m, void *data)
{
const struct dp_debug_private *debug = m->private;
const struct drm_connector *connector = debug->connector;
u32 bpc;
if (connector->status == connector_status_connected) {
bpc = debug->link->test_video.test_bit_depth;
seq_printf(m, "hdisplay: %d\n",
debug->link->test_video.test_h_width);
seq_printf(m, "vdisplay: %d\n",
debug->link->test_video.test_v_height);
seq_printf(m, "bpc: %u\n",
dp_link_bit_depth_to_bpc(bpc));
} else {
seq_puts(m, "0");
}
return 0;
}
DEFINE_SHOW_ATTRIBUTE(dp_test_data);
static int dp_test_type_show(struct seq_file *m, void *data)
{
const struct dp_debug_private *debug = m->private;
const struct drm_connector *connector = debug->connector;
if (connector->status == connector_status_connected)
seq_printf(m, "%02x", DP_TEST_LINK_VIDEO_PATTERN);
else
seq_puts(m, "0");
return 0;
}
DEFINE_SHOW_ATTRIBUTE(dp_test_type);
static ssize_t dp_test_active_write(struct file *file,
const char __user *ubuf,
size_t len, loff_t *offp)
{
char *input_buffer;
int status = 0;
const struct dp_debug_private *debug;
const struct drm_connector *connector;
int val = 0;
debug = ((struct seq_file *)file->private_data)->private;
connector = debug->connector;
if (len == 0)
return 0;
input_buffer = memdup_user_nul(ubuf, len);
if (IS_ERR(input_buffer))
return PTR_ERR(input_buffer);
DRM_DEBUG_DRIVER("Copied %d bytes from user\n", (unsigned int)len);
if (connector->status == connector_status_connected) {
status = kstrtoint(input_buffer, 10, &val);
if (status < 0) {
kfree(input_buffer);
return status;
}
DRM_DEBUG_DRIVER("Got %d for test active\n", val);
/* To prevent erroneous activation of the compliance
* testing code, only accept an actual value of 1 here
*/
if (val == 1)
debug->panel->video_test = true;
else
debug->panel->video_test = false;
}
kfree(input_buffer);
*offp += len;
return len;
}
static int dp_test_active_show(struct seq_file *m, void *data)
{
struct dp_debug_private *debug = m->private;
struct drm_connector *connector = debug->connector;
if (connector->status == connector_status_connected) {
if (debug->panel->video_test)
seq_puts(m, "1");
else
seq_puts(m, "0");
} else {
seq_puts(m, "0");
}
return 0;
}
static int dp_test_active_open(struct inode *inode,
struct file *file)
{
return single_open(file, dp_test_active_show,
inode->i_private);
}
static const struct file_operations test_active_fops = {
.owner = THIS_MODULE,
.open = dp_test_active_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = dp_test_active_write
};
static void dp_debug_init(struct dp_debug *dp_debug, struct dentry *root, bool is_edp)
{
struct dp_debug_private *debug = container_of(dp_debug,
struct dp_debug_private, dp_debug);
debugfs_create_file("dp_debug", 0444, root,
debug, &dp_debug_fops);
if (!is_edp) {
debugfs_create_file("msm_dp_test_active", 0444,
root,
debug, &test_active_fops);
debugfs_create_file("msm_dp_test_data", 0444,
root,
debug, &dp_test_data_fops);
debugfs_create_file("msm_dp_test_type", 0444,
root,
debug, &dp_test_type_fops);
}
}
struct dp_debug *dp_debug_get(struct device *dev, struct dp_panel *panel,
struct dp_link *link,
struct drm_connector *connector,
struct dentry *root, bool is_edp)
{
struct dp_debug_private *debug;
struct dp_debug *dp_debug;
int rc;
if (!dev || !panel || !link) {
DRM_ERROR("invalid input\n");
rc = -EINVAL;
goto error;
}
debug = devm_kzalloc(dev, sizeof(*debug), GFP_KERNEL);
if (!debug) {
rc = -ENOMEM;
goto error;
}
debug->dp_debug.debug_en = false;
debug->link = link;
debug->panel = panel;
dp_debug = &debug->dp_debug;
dp_debug->vdisplay = 0;
dp_debug->hdisplay = 0;
dp_debug->vrefresh = 0;
dp_debug_init(dp_debug, root, is_edp);
return dp_debug;
error:
return ERR_PTR(rc);
}
|
