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79e53945 JB |
1 | /************************************************************************** |
2 | ||
3 | Copyright © 2006 Dave Airlie | |
4 | ||
5 | All Rights Reserved. | |
6 | ||
7 | Permission is hereby granted, free of charge, to any person obtaining a | |
8 | copy of this software and associated documentation files (the | |
9 | "Software"), to deal in the Software without restriction, including | |
10 | without limitation the rights to use, copy, modify, merge, publish, | |
11 | distribute, sub license, and/or sell copies of the Software, and to | |
12 | permit persons to whom the Software is furnished to do so, subject to | |
13 | the following conditions: | |
14 | ||
15 | The above copyright notice and this permission notice (including the | |
16 | next paragraph) shall be included in all copies or substantial portions | |
17 | of the Software. | |
18 | ||
19 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
20 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
21 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. | |
22 | IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
23 | ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | |
24 | TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | |
25 | SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
26 | ||
27 | **************************************************************************/ | |
28 | ||
29 | #include "dvo.h" | |
30 | ||
31 | #define SIL164_VID 0x0001 | |
32 | #define SIL164_DID 0x0006 | |
33 | ||
34 | #define SIL164_VID_LO 0x00 | |
35 | #define SIL164_VID_HI 0x01 | |
36 | #define SIL164_DID_LO 0x02 | |
37 | #define SIL164_DID_HI 0x03 | |
38 | #define SIL164_REV 0x04 | |
39 | #define SIL164_RSVD 0x05 | |
40 | #define SIL164_FREQ_LO 0x06 | |
41 | #define SIL164_FREQ_HI 0x07 | |
42 | ||
43 | #define SIL164_REG8 0x08 | |
44 | #define SIL164_8_VEN (1<<5) | |
45 | #define SIL164_8_HEN (1<<4) | |
46 | #define SIL164_8_DSEL (1<<3) | |
47 | #define SIL164_8_BSEL (1<<2) | |
48 | #define SIL164_8_EDGE (1<<1) | |
49 | #define SIL164_8_PD (1<<0) | |
50 | ||
51 | #define SIL164_REG9 0x09 | |
52 | #define SIL164_9_VLOW (1<<7) | |
53 | #define SIL164_9_MSEL_MASK (0x7<<4) | |
54 | #define SIL164_9_TSEL (1<<3) | |
55 | #define SIL164_9_RSEN (1<<2) | |
56 | #define SIL164_9_HTPLG (1<<1) | |
57 | #define SIL164_9_MDI (1<<0) | |
58 | ||
59 | #define SIL164_REGC 0x0c | |
60 | ||
79e53945 JB |
61 | struct sil164_priv { |
62 | //I2CDevRec d; | |
63 | bool quiet; | |
79e53945 JB |
64 | }; |
65 | ||
66 | #define SILPTR(d) ((SIL164Ptr)(d->DriverPrivate.ptr)) | |
67 | ||
68 | static bool sil164_readb(struct intel_dvo_device *dvo, int addr, uint8_t *ch) | |
69 | { | |
70 | struct sil164_priv *sil = dvo->dev_priv; | |
f9c10a9b | 71 | struct i2c_adapter *adapter = dvo->i2c_bus; |
79e53945 JB |
72 | u8 out_buf[2]; |
73 | u8 in_buf[2]; | |
74 | ||
75 | struct i2c_msg msgs[] = { | |
76 | { | |
f9c10a9b | 77 | .addr = dvo->slave_addr, |
79e53945 JB |
78 | .flags = 0, |
79 | .len = 1, | |
80 | .buf = out_buf, | |
81 | }, | |
82 | { | |
f9c10a9b | 83 | .addr = dvo->slave_addr, |
79e53945 JB |
84 | .flags = I2C_M_RD, |
85 | .len = 1, | |
86 | .buf = in_buf, | |
87 | } | |
88 | }; | |
89 | ||
90 | out_buf[0] = addr; | |
91 | out_buf[1] = 0; | |
92 | ||
f899fc64 | 93 | if (i2c_transfer(adapter, msgs, 2) == 2) { |
79e53945 JB |
94 | *ch = in_buf[0]; |
95 | return true; | |
6ed6bd84 | 96 | } |
79e53945 JB |
97 | |
98 | if (!sil->quiet) { | |
d0c3b04a | 99 | DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n", |
f899fc64 | 100 | addr, adapter->name, dvo->slave_addr); |
79e53945 JB |
101 | } |
102 | return false; | |
103 | } | |
104 | ||
105 | static bool sil164_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch) | |
106 | { | |
0206e353 | 107 | struct sil164_priv *sil = dvo->dev_priv; |
f9c10a9b | 108 | struct i2c_adapter *adapter = dvo->i2c_bus; |
79e53945 JB |
109 | uint8_t out_buf[2]; |
110 | struct i2c_msg msg = { | |
f9c10a9b | 111 | .addr = dvo->slave_addr, |
79e53945 JB |
112 | .flags = 0, |
113 | .len = 2, | |
114 | .buf = out_buf, | |
115 | }; | |
116 | ||
117 | out_buf[0] = addr; | |
118 | out_buf[1] = ch; | |
119 | ||
f899fc64 | 120 | if (i2c_transfer(adapter, &msg, 1) == 1) |
79e53945 JB |
121 | return true; |
122 | ||
123 | if (!sil->quiet) { | |
d0c3b04a | 124 | DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n", |
f899fc64 | 125 | addr, adapter->name, dvo->slave_addr); |
79e53945 JB |
126 | } |
127 | ||
128 | return false; | |
129 | } | |
130 | ||
131 | /* Silicon Image 164 driver for chip on i2c bus */ | |
132 | static bool sil164_init(struct intel_dvo_device *dvo, | |
f9c10a9b | 133 | struct i2c_adapter *adapter) |
79e53945 JB |
134 | { |
135 | /* this will detect the SIL164 chip on the specified i2c bus */ | |
136 | struct sil164_priv *sil; | |
137 | unsigned char ch; | |
138 | ||
139 | sil = kzalloc(sizeof(struct sil164_priv), GFP_KERNEL); | |
140 | if (sil == NULL) | |
141 | return false; | |
142 | ||
f9c10a9b | 143 | dvo->i2c_bus = adapter; |
79e53945 JB |
144 | dvo->dev_priv = sil; |
145 | sil->quiet = true; | |
146 | ||
147 | if (!sil164_readb(dvo, SIL164_VID_LO, &ch)) | |
148 | goto out; | |
149 | ||
150 | if (ch != (SIL164_VID & 0xff)) { | |
d0c3b04a | 151 | DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n", |
f9c10a9b | 152 | ch, adapter->name, dvo->slave_addr); |
79e53945 JB |
153 | goto out; |
154 | } | |
155 | ||
156 | if (!sil164_readb(dvo, SIL164_DID_LO, &ch)) | |
157 | goto out; | |
158 | ||
159 | if (ch != (SIL164_DID & 0xff)) { | |
d0c3b04a | 160 | DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n", |
f9c10a9b | 161 | ch, adapter->name, dvo->slave_addr); |
79e53945 JB |
162 | goto out; |
163 | } | |
164 | sil->quiet = false; | |
165 | ||
d0c3b04a | 166 | DRM_DEBUG_KMS("init sil164 dvo controller successfully!\n"); |
79e53945 JB |
167 | return true; |
168 | ||
169 | out: | |
170 | kfree(sil); | |
171 | return false; | |
172 | } | |
173 | ||
174 | static enum drm_connector_status sil164_detect(struct intel_dvo_device *dvo) | |
175 | { | |
176 | uint8_t reg9; | |
177 | ||
178 | sil164_readb(dvo, SIL164_REG9, ®9); | |
179 | ||
180 | if (reg9 & SIL164_9_HTPLG) | |
181 | return connector_status_connected; | |
182 | else | |
183 | return connector_status_disconnected; | |
184 | } | |
185 | ||
186 | static enum drm_mode_status sil164_mode_valid(struct intel_dvo_device *dvo, | |
187 | struct drm_display_mode *mode) | |
188 | { | |
189 | return MODE_OK; | |
190 | } | |
191 | ||
192 | static void sil164_mode_set(struct intel_dvo_device *dvo, | |
193 | struct drm_display_mode *mode, | |
194 | struct drm_display_mode *adjusted_mode) | |
195 | { | |
196 | /* As long as the basics are set up, since we don't have clock | |
197 | * dependencies in the mode setup, we can just leave the | |
198 | * registers alone and everything will work fine. | |
199 | */ | |
200 | /* recommended programming sequence from doc */ | |
201 | /*sil164_writeb(sil, 0x08, 0x30); | |
202 | sil164_writeb(sil, 0x09, 0x00); | |
203 | sil164_writeb(sil, 0x0a, 0x90); | |
204 | sil164_writeb(sil, 0x0c, 0x89); | |
205 | sil164_writeb(sil, 0x08, 0x31);*/ | |
206 | /* don't do much */ | |
207 | return; | |
208 | } | |
209 | ||
210 | /* set the SIL164 power state */ | |
fac3274c | 211 | static void sil164_dpms(struct intel_dvo_device *dvo, bool enable) |
79e53945 JB |
212 | { |
213 | int ret; | |
214 | unsigned char ch; | |
215 | ||
216 | ret = sil164_readb(dvo, SIL164_REG8, &ch); | |
217 | if (ret == false) | |
218 | return; | |
219 | ||
fac3274c | 220 | if (enable) |
79e53945 JB |
221 | ch |= SIL164_8_PD; |
222 | else | |
223 | ch &= ~SIL164_8_PD; | |
224 | ||
225 | sil164_writeb(dvo, SIL164_REG8, ch); | |
226 | return; | |
227 | } | |
228 | ||
732ce74f DV |
229 | static bool sil164_get_hw_state(struct intel_dvo_device *dvo) |
230 | { | |
231 | int ret; | |
232 | unsigned char ch; | |
233 | ||
234 | ret = sil164_readb(dvo, SIL164_REG8, &ch); | |
235 | if (ret == false) | |
236 | return false; | |
237 | ||
238 | if (ch & SIL164_8_PD) | |
239 | return true; | |
240 | else | |
241 | return false; | |
242 | } | |
243 | ||
79e53945 JB |
244 | static void sil164_dump_regs(struct intel_dvo_device *dvo) |
245 | { | |
246 | uint8_t val; | |
247 | ||
248 | sil164_readb(dvo, SIL164_FREQ_LO, &val); | |
29139e4b | 249 | DRM_DEBUG_KMS("SIL164_FREQ_LO: 0x%02x\n", val); |
79e53945 | 250 | sil164_readb(dvo, SIL164_FREQ_HI, &val); |
29139e4b | 251 | DRM_DEBUG_KMS("SIL164_FREQ_HI: 0x%02x\n", val); |
79e53945 | 252 | sil164_readb(dvo, SIL164_REG8, &val); |
29139e4b | 253 | DRM_DEBUG_KMS("SIL164_REG8: 0x%02x\n", val); |
79e53945 | 254 | sil164_readb(dvo, SIL164_REG9, &val); |
29139e4b | 255 | DRM_DEBUG_KMS("SIL164_REG9: 0x%02x\n", val); |
79e53945 | 256 | sil164_readb(dvo, SIL164_REGC, &val); |
29139e4b | 257 | DRM_DEBUG_KMS("SIL164_REGC: 0x%02x\n", val); |
79e53945 JB |
258 | } |
259 | ||
79e53945 JB |
260 | static void sil164_destroy(struct intel_dvo_device *dvo) |
261 | { | |
262 | struct sil164_priv *sil = dvo->dev_priv; | |
263 | ||
264 | if (sil) { | |
265 | kfree(sil); | |
266 | dvo->dev_priv = NULL; | |
267 | } | |
268 | } | |
269 | ||
270 | struct intel_dvo_dev_ops sil164_ops = { | |
271 | .init = sil164_init, | |
272 | .detect = sil164_detect, | |
273 | .mode_valid = sil164_mode_valid, | |
274 | .mode_set = sil164_mode_set, | |
275 | .dpms = sil164_dpms, | |
732ce74f | 276 | .get_hw_state = sil164_get_hw_state, |
79e53945 | 277 | .dump_regs = sil164_dump_regs, |
79e53945 JB |
278 | .destroy = sil164_destroy, |
279 | }; |