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
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
|
/*
* Copyright © 2007 Dave Mueller
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Dave Mueller <dave.mueller@gmx.ch>
*
*/
#include "dvo.h"
/* register definitions according to the TFP410 data sheet */
#define TFP410_VID 0x014C
#define TFP410_DID 0x0410
#define TFP410_VID_LO 0x00
#define TFP410_VID_HI 0x01
#define TFP410_DID_LO 0x02
#define TFP410_DID_HI 0x03
#define TFP410_REV 0x04
#define TFP410_CTL_1 0x08
#define TFP410_CTL_1_TDIS (1<<6)
#define TFP410_CTL_1_VEN (1<<5)
#define TFP410_CTL_1_HEN (1<<4)
#define TFP410_CTL_1_DSEL (1<<3)
#define TFP410_CTL_1_BSEL (1<<2)
#define TFP410_CTL_1_EDGE (1<<1)
#define TFP410_CTL_1_PD (1<<0)
#define TFP410_CTL_2 0x09
#define TFP410_CTL_2_VLOW (1<<7)
#define TFP410_CTL_2_MSEL_MASK (0x7<<4)
#define TFP410_CTL_2_MSEL (1<<4)
#define TFP410_CTL_2_TSEL (1<<3)
#define TFP410_CTL_2_RSEN (1<<2)
#define TFP410_CTL_2_HTPLG (1<<1)
#define TFP410_CTL_2_MDI (1<<0)
#define TFP410_CTL_3 0x0A
#define TFP410_CTL_3_DK_MASK (0x7<<5)
#define TFP410_CTL_3_DK (1<<5)
#define TFP410_CTL_3_DKEN (1<<4)
#define TFP410_CTL_3_CTL_MASK (0x7<<1)
#define TFP410_CTL_3_CTL (1<<1)
#define TFP410_USERCFG 0x0B
#define TFP410_DE_DLY 0x32
#define TFP410_DE_CTL 0x33
#define TFP410_DE_CTL_DEGEN (1<<6)
#define TFP410_DE_CTL_VSPOL (1<<5)
#define TFP410_DE_CTL_HSPOL (1<<4)
#define TFP410_DE_CTL_DEDLY8 (1<<0)
#define TFP410_DE_TOP 0x34
#define TFP410_DE_CNT_LO 0x36
#define TFP410_DE_CNT_HI 0x37
#define TFP410_DE_LIN_LO 0x38
#define TFP410_DE_LIN_HI 0x39
#define TFP410_H_RES_LO 0x3A
#define TFP410_H_RES_HI 0x3B
#define TFP410_V_RES_LO 0x3C
#define TFP410_V_RES_HI 0x3D
struct tfp410_priv {
bool quiet;
};
static bool tfp410_readb(struct intel_dvo_device *dvo, int addr, uint8_t *ch)
{
struct tfp410_priv *tfp = dvo->dev_priv;
struct i2c_adapter *adapter = dvo->i2c_bus;
u8 out_buf[2];
u8 in_buf[2];
struct i2c_msg msgs[] = {
{
.addr = dvo->slave_addr,
.flags = 0,
.len = 1,
.buf = out_buf,
},
{
.addr = dvo->slave_addr,
.flags = I2C_M_RD,
.len = 1,
.buf = in_buf,
}
};
out_buf[0] = addr;
out_buf[1] = 0;
if (i2c_transfer(adapter, msgs, 2) == 2) {
*ch = in_buf[0];
return true;
};
if (!tfp->quiet) {
DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
addr, adapter->name, dvo->slave_addr);
}
return false;
}
static bool tfp410_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch)
{
struct tfp410_priv *tfp = dvo->dev_priv;
struct i2c_adapter *adapter = dvo->i2c_bus;
uint8_t out_buf[2];
struct i2c_msg msg = {
.addr = dvo->slave_addr,
.flags = 0,
.len = 2,
.buf = out_buf,
};
out_buf[0] = addr;
out_buf[1] = ch;
if (i2c_transfer(adapter, &msg, 1) == 1)
return true;
if (!tfp->quiet) {
DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
addr, adapter->name, dvo->slave_addr);
}
return false;
}
static int tfp410_getid(struct intel_dvo_device *dvo, int addr)
{
uint8_t ch1, ch2;
if (tfp410_readb(dvo, addr+0, &ch1) &&
tfp410_readb(dvo, addr+1, &ch2))
return ((ch2 << 8) & 0xFF00) | (ch1 & 0x00FF);
return -1;
}
/* Ti TFP410 driver for chip on i2c bus */
static bool tfp410_init(struct intel_dvo_device *dvo,
struct i2c_adapter *adapter)
{
/* this will detect the tfp410 chip on the specified i2c bus */
struct tfp410_priv *tfp;
int id;
tfp = kzalloc(sizeof(struct tfp410_priv), GFP_KERNEL);
if (tfp == NULL)
return false;
dvo->i2c_bus = adapter;
dvo->dev_priv = tfp;
tfp->quiet = true;
if ((id = tfp410_getid(dvo, TFP410_VID_LO)) != TFP410_VID) {
DRM_DEBUG_KMS("tfp410 not detected got VID %X: from %s "
"Slave %d.\n",
id, adapter->name, dvo->slave_addr);
goto out;
}
if ((id = tfp410_getid(dvo, TFP410_DID_LO)) != TFP410_DID) {
DRM_DEBUG_KMS("tfp410 not detected got DID %X: from %s "
"Slave %d.\n",
id, adapter->name, dvo->slave_addr);
goto out;
}
tfp->quiet = false;
return true;
out:
kfree(tfp);
return false;
}
static enum drm_connector_status tfp410_detect(struct intel_dvo_device *dvo)
{
enum drm_connector_status ret = connector_status_disconnected;
uint8_t ctl2;
if (tfp410_readb(dvo, TFP410_CTL_2, &ctl2)) {
if (ctl2 & TFP410_CTL_2_RSEN)
ret = connector_status_connected;
else
ret = connector_status_disconnected;
}
return ret;
}
static enum drm_mode_status tfp410_mode_valid(struct intel_dvo_device *dvo,
struct drm_display_mode *mode)
{
return MODE_OK;
}
static void tfp410_mode_set(struct intel_dvo_device *dvo,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
/* As long as the basics are set up, since we don't have clock dependencies
* in the mode setup, we can just leave the registers alone and everything
* will work fine.
*/
/* don't do much */
return;
}
/* set the tfp410 power state */
static void tfp410_dpms(struct intel_dvo_device *dvo, bool enable)
{
uint8_t ctl1;
if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1))
return;
if (enable)
ctl1 |= TFP410_CTL_1_PD;
else
ctl1 &= ~TFP410_CTL_1_PD;
tfp410_writeb(dvo, TFP410_CTL_1, ctl1);
}
static bool tfp410_get_hw_state(struct intel_dvo_device *dvo)
{
uint8_t ctl1;
if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1))
return false;
if (ctl1 & TFP410_CTL_1_PD)
return true;
else
return false;
}
static void tfp410_dump_regs(struct intel_dvo_device *dvo)
{
uint8_t val, val2;
tfp410_readb(dvo, TFP410_REV, &val);
DRM_LOG_KMS("TFP410_REV: 0x%02X\n", val);
tfp410_readb(dvo, TFP410_CTL_1, &val);
DRM_LOG_KMS("TFP410_CTL1: 0x%02X\n", val);
tfp410_readb(dvo, TFP410_CTL_2, &val);
DRM_LOG_KMS("TFP410_CTL2: 0x%02X\n", val);
tfp410_readb(dvo, TFP410_CTL_3, &val);
DRM_LOG_KMS("TFP410_CTL3: 0x%02X\n", val);
tfp410_readb(dvo, TFP410_USERCFG, &val);
DRM_LOG_KMS("TFP410_USERCFG: 0x%02X\n", val);
tfp410_readb(dvo, TFP410_DE_DLY, &val);
DRM_LOG_KMS("TFP410_DE_DLY: 0x%02X\n", val);
tfp410_readb(dvo, TFP410_DE_CTL, &val);
DRM_LOG_KMS("TFP410_DE_CTL: 0x%02X\n", val);
tfp410_readb(dvo, TFP410_DE_TOP, &val);
DRM_LOG_KMS("TFP410_DE_TOP: 0x%02X\n", val);
tfp410_readb(dvo, TFP410_DE_CNT_LO, &val);
tfp410_readb(dvo, TFP410_DE_CNT_HI, &val2);
DRM_LOG_KMS("TFP410_DE_CNT: 0x%02X%02X\n", val2, val);
tfp410_readb(dvo, TFP410_DE_LIN_LO, &val);
tfp410_readb(dvo, TFP410_DE_LIN_HI, &val2);
DRM_LOG_KMS("TFP410_DE_LIN: 0x%02X%02X\n", val2, val);
tfp410_readb(dvo, TFP410_H_RES_LO, &val);
tfp410_readb(dvo, TFP410_H_RES_HI, &val2);
DRM_LOG_KMS("TFP410_H_RES: 0x%02X%02X\n", val2, val);
tfp410_readb(dvo, TFP410_V_RES_LO, &val);
tfp410_readb(dvo, TFP410_V_RES_HI, &val2);
DRM_LOG_KMS("TFP410_V_RES: 0x%02X%02X\n", val2, val);
}
static void tfp410_destroy(struct intel_dvo_device *dvo)
{
struct tfp410_priv *tfp = dvo->dev_priv;
if (tfp) {
kfree(tfp);
dvo->dev_priv = NULL;
}
}
struct intel_dvo_dev_ops tfp410_ops = {
.init = tfp410_init,
.detect = tfp410_detect,
.mode_valid = tfp410_mode_valid,
.mode_set = tfp410_mode_set,
.dpms = tfp410_dpms,
.get_hw_state = tfp410_get_hw_state,
.dump_regs = tfp410_dump_regs,
.destroy = tfp410_destroy,
};
|
