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81dee67e SM |
1 | #define USE_DVICHIP |
2 | #ifdef USE_DVICHIP | |
3 | ||
4 | #include "ddk750_sii164.h" | |
5 | #include "ddk750_hwi2c.h" | |
6 | ||
7 | /* I2C Address of each SII164 chip */ | |
8 | #define SII164_I2C_ADDRESS 0x70 | |
9 | ||
10 | /* Define this definition to use hardware i2c. */ | |
11 | #define USE_HW_I2C | |
12 | ||
13 | #ifdef USE_HW_I2C | |
14 | #define i2cWriteReg hwI2CWriteReg | |
15 | #define i2cReadReg hwI2CReadReg | |
16 | #else | |
17 | #define i2cWriteReg swI2CWriteReg | |
18 | #define i2cReadReg swI2CReadReg | |
19 | #endif | |
20 | ||
21 | /* SII164 Vendor and Device ID */ | |
22 | #define SII164_VENDOR_ID 0x0001 | |
23 | #define SII164_DEVICE_ID 0x0006 | |
24 | ||
25 | #ifdef SII164_FULL_FUNCTIONS | |
26 | /* Name of the DVI Controller chip */ | |
27 | static char *gDviCtrlChipName = "Silicon Image SiI 164"; | |
28 | #endif | |
29 | ||
30 | /* | |
31 | * sii164GetVendorID | |
32 | * This function gets the vendor ID of the DVI controller chip. | |
33 | * | |
34 | * Output: | |
35 | * Vendor ID | |
36 | */ | |
6fa7db83 | 37 | unsigned short sii164GetVendorID(void) |
81dee67e SM |
38 | { |
39 | unsigned short vendorID; | |
40 | ||
41 | vendorID = ((unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_VENDOR_ID_HIGH) << 8) | | |
42 | (unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_VENDOR_ID_LOW); | |
43 | ||
44 | return vendorID; | |
45 | } | |
46 | ||
47 | /* | |
48 | * sii164GetDeviceID | |
49 | * This function gets the device ID of the DVI controller chip. | |
50 | * | |
51 | * Output: | |
52 | * Device ID | |
53 | */ | |
6fa7db83 | 54 | unsigned short sii164GetDeviceID(void) |
81dee67e SM |
55 | { |
56 | unsigned short deviceID; | |
57 | ||
58 | deviceID = ((unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_DEVICE_ID_HIGH) << 8) | | |
59 | (unsigned short) i2cReadReg(SII164_I2C_ADDRESS, SII164_DEVICE_ID_LOW); | |
60 | ||
61 | return deviceID; | |
62 | } | |
63 | ||
64 | ||
65 | ||
66 | /* DVI.C will handle all SiI164 chip stuffs and try it best to make code minimal and useful */ | |
67 | ||
68 | /* | |
69 | * sii164InitChip | |
70 | * This function initialize and detect the DVI controller chip. | |
71 | * | |
72 | * Input: | |
73 | * edgeSelect - Edge Select: | |
74 | * 0 = Input data is falling edge latched (falling edge | |
75 | * latched first in dual edge mode) | |
76 | * 1 = Input data is rising edge latched (rising edge | |
77 | * latched first in dual edge mode) | |
78 | * busSelect - Input Bus Select: | |
79 | * 0 = Input data bus is 12-bits wide | |
80 | * 1 = Input data bus is 24-bits wide | |
81 | * dualEdgeClkSelect - Dual Edge Clock Select | |
82 | * 0 = Input data is single edge latched | |
83 | * 1 = Input data is dual edge latched | |
84 | * hsyncEnable - Horizontal Sync Enable: | |
85 | * 0 = HSYNC input is transmitted as fixed LOW | |
86 | * 1 = HSYNC input is transmitted as is | |
87 | * vsyncEnable - Vertical Sync Enable: | |
88 | * 0 = VSYNC input is transmitted as fixed LOW | |
89 | * 1 = VSYNC input is transmitted as is | |
90 | * deskewEnable - De-skewing Enable: | |
91 | * 0 = De-skew disabled | |
92 | * 1 = De-skew enabled | |
93 | * deskewSetting - De-skewing Setting (increment of 260psec) | |
94 | * 0 = 1 step --> minimum setup / maximum hold | |
95 | * 1 = 2 step | |
96 | * 2 = 3 step | |
97 | * 3 = 4 step | |
98 | * 4 = 5 step | |
99 | * 5 = 6 step | |
100 | * 6 = 7 step | |
101 | * 7 = 8 step --> maximum setup / minimum hold | |
102 | * continuousSyncEnable- SYNC Continuous: | |
103 | * 0 = Disable | |
104 | * 1 = Enable | |
105 | * pllFilterEnable - PLL Filter Enable | |
106 | * 0 = Disable PLL Filter | |
107 | * 1 = Enable PLL Filter | |
108 | * pllFilterValue - PLL Filter characteristics: | |
109 | * 0~7 (recommended value is 4) | |
110 | * | |
111 | * Output: | |
112 | * 0 - Success | |
113 | * -1 - Fail. | |
114 | */ | |
115 | long sii164InitChip( | |
116 | unsigned char edgeSelect, | |
117 | unsigned char busSelect, | |
118 | unsigned char dualEdgeClkSelect, | |
119 | unsigned char hsyncEnable, | |
120 | unsigned char vsyncEnable, | |
121 | unsigned char deskewEnable, | |
122 | unsigned char deskewSetting, | |
123 | unsigned char continuousSyncEnable, | |
124 | unsigned char pllFilterEnable, | |
125 | unsigned char pllFilterValue | |
126 | ) | |
127 | { | |
128 | //unsigned char ucRegIndex, ucRegValue; | |
129 | //unsigned char ucDeviceAddress, | |
130 | unsigned char config; | |
131 | //unsigned long delayCount; | |
132 | ||
133 | /* Initialize the i2c bus */ | |
134 | #ifdef USE_HW_I2C | |
135 | /* Use fast mode. */ | |
136 | hwI2CInit(1); | |
137 | #else | |
138 | swI2CInit(DEFAULT_I2C_SCL, DEFAULT_I2C_SDA); | |
139 | #endif | |
140 | ||
141 | /* Check if SII164 Chip exists */ | |
142 | if ((sii164GetVendorID() == SII164_VENDOR_ID) && (sii164GetDeviceID() == SII164_DEVICE_ID)) | |
143 | { | |
144 | ||
145 | #ifdef DDKDEBUG | |
146 | //sii164PrintRegisterValues(); | |
147 | #endif | |
148 | /* | |
149 | * Initialize SII164 controller chip. | |
150 | */ | |
151 | ||
152 | /* Select the edge */ | |
153 | if (edgeSelect == 0) | |
154 | config = SII164_CONFIGURATION_LATCH_FALLING; | |
155 | else | |
156 | config = SII164_CONFIGURATION_LATCH_RISING; | |
157 | ||
158 | /* Select bus wide */ | |
159 | if (busSelect == 0) | |
160 | config |= SII164_CONFIGURATION_BUS_12BITS; | |
161 | else | |
162 | config |= SII164_CONFIGURATION_BUS_24BITS; | |
163 | ||
164 | /* Select Dual/Single Edge Clock */ | |
165 | if (dualEdgeClkSelect == 0) | |
166 | config |= SII164_CONFIGURATION_CLOCK_SINGLE; | |
167 | else | |
168 | config |= SII164_CONFIGURATION_CLOCK_DUAL; | |
169 | ||
170 | /* Select HSync Enable */ | |
171 | if (hsyncEnable == 0) | |
172 | config |= SII164_CONFIGURATION_HSYNC_FORCE_LOW; | |
173 | else | |
174 | config |= SII164_CONFIGURATION_HSYNC_AS_IS; | |
175 | ||
176 | /* Select VSync Enable */ | |
177 | if (vsyncEnable == 0) | |
178 | config |= SII164_CONFIGURATION_VSYNC_FORCE_LOW; | |
179 | else | |
180 | config |= SII164_CONFIGURATION_VSYNC_AS_IS; | |
181 | ||
182 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config); | |
183 | ||
184 | /* De-skew enabled with default 111b value. | |
185 | This will fix some artifacts problem in some mode on board 2.2. | |
186 | Somehow this fix does not affect board 2.1. | |
187 | */ | |
188 | if (deskewEnable == 0) | |
189 | config = SII164_DESKEW_DISABLE; | |
190 | else | |
191 | config = SII164_DESKEW_ENABLE; | |
192 | ||
193 | switch (deskewSetting) | |
194 | { | |
195 | case 0: | |
196 | config |= SII164_DESKEW_1_STEP; | |
197 | break; | |
198 | case 1: | |
199 | config |= SII164_DESKEW_2_STEP; | |
200 | break; | |
201 | case 2: | |
202 | config |= SII164_DESKEW_3_STEP; | |
203 | break; | |
204 | case 3: | |
205 | config |= SII164_DESKEW_4_STEP; | |
206 | break; | |
207 | case 4: | |
208 | config |= SII164_DESKEW_5_STEP; | |
209 | break; | |
210 | case 5: | |
211 | config |= SII164_DESKEW_6_STEP; | |
212 | break; | |
213 | case 6: | |
214 | config |= SII164_DESKEW_7_STEP; | |
215 | break; | |
216 | case 7: | |
217 | config |= SII164_DESKEW_8_STEP; | |
218 | break; | |
219 | } | |
220 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_DESKEW, config); | |
221 | ||
222 | /* Enable/Disable Continuous Sync. */ | |
223 | if (continuousSyncEnable == 0) | |
224 | config = SII164_PLL_FILTER_SYNC_CONTINUOUS_DISABLE; | |
225 | else | |
226 | config = SII164_PLL_FILTER_SYNC_CONTINUOUS_ENABLE; | |
227 | ||
228 | /* Enable/Disable PLL Filter */ | |
229 | if (pllFilterEnable == 0) | |
230 | config |= SII164_PLL_FILTER_DISABLE; | |
231 | else | |
232 | config |= SII164_PLL_FILTER_ENABLE; | |
233 | ||
234 | /* Set the PLL Filter value */ | |
235 | config |= ((pllFilterValue & 0x07) << 1); | |
236 | ||
237 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_PLL, config); | |
238 | ||
239 | /* Recover from Power Down and enable output. */ | |
240 | config = i2cReadReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION); | |
241 | config |= SII164_CONFIGURATION_POWER_NORMAL; | |
242 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config); | |
243 | ||
244 | #ifdef DDKDEBUG | |
245 | //sii164PrintRegisterValues(); | |
246 | #endif | |
247 | ||
248 | return 0; | |
249 | } | |
250 | ||
251 | /* Return -1 if initialization fails. */ | |
252 | return (-1); | |
253 | } | |
254 | ||
255 | ||
256 | ||
257 | ||
258 | ||
259 | /* below sii164 function is not neccessary */ | |
260 | ||
261 | #ifdef SII164_FULL_FUNCTIONS | |
262 | ||
263 | /* | |
264 | * sii164ResetChip | |
265 | * This function resets the DVI Controller Chip. | |
266 | */ | |
6fa7db83 | 267 | void sii164ResetChip(void) |
81dee67e SM |
268 | { |
269 | /* Power down */ | |
270 | sii164SetPower(0); | |
271 | sii164SetPower(1); | |
272 | } | |
273 | ||
274 | ||
275 | /* | |
276 | * sii164GetChipString | |
277 | * This function returns a char string name of the current DVI Controller chip. | |
278 | * It's convenient for application need to display the chip name. | |
279 | */ | |
6fa7db83 | 280 | char *sii164GetChipString(void) |
81dee67e SM |
281 | { |
282 | return gDviCtrlChipName; | |
283 | } | |
284 | ||
285 | ||
286 | /* | |
287 | * sii164SetPower | |
288 | * This function sets the power configuration of the DVI Controller Chip. | |
289 | * | |
290 | * Input: | |
291 | * powerUp - Flag to set the power down or up | |
292 | */ | |
293 | void sii164SetPower( | |
294 | unsigned char powerUp | |
295 | ) | |
296 | { | |
297 | unsigned char config; | |
298 | ||
299 | config = i2cReadReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION); | |
300 | if (powerUp == 1) | |
301 | { | |
302 | /* Power up the chip */ | |
303 | config &= ~SII164_CONFIGURATION_POWER_MASK; | |
304 | config |= SII164_CONFIGURATION_POWER_NORMAL; | |
305 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config); | |
306 | } | |
307 | else | |
308 | { | |
309 | /* Power down the chip */ | |
310 | config &= ~SII164_CONFIGURATION_POWER_MASK; | |
311 | config |= SII164_CONFIGURATION_POWER_DOWN; | |
312 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_CONFIGURATION, config); | |
313 | } | |
314 | } | |
315 | ||
316 | ||
317 | /* | |
318 | * sii164SelectHotPlugDetectionMode | |
319 | * This function selects the mode of the hot plug detection. | |
320 | */ | |
321 | static void sii164SelectHotPlugDetectionMode( | |
322 | sii164_hot_plug_mode_t hotPlugMode | |
323 | ) | |
324 | { | |
325 | unsigned char detectReg; | |
326 | ||
327 | detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & ~SII164_DETECT_MONITOR_SENSE_OUTPUT_FLAG; | |
328 | switch (hotPlugMode) | |
329 | { | |
330 | case SII164_HOTPLUG_DISABLE: | |
331 | detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_HIGH; | |
332 | break; | |
333 | case SII164_HOTPLUG_USE_MDI: | |
334 | detectReg &= ~SII164_DETECT_INTERRUPT_MASK; | |
335 | detectReg |= SII164_DETECT_INTERRUPT_BY_HTPLG_PIN; | |
336 | detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_MDI; | |
337 | break; | |
338 | case SII164_HOTPLUG_USE_RSEN: | |
339 | detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_RSEN; | |
340 | break; | |
341 | case SII164_HOTPLUG_USE_HTPLG: | |
342 | detectReg |= SII164_DETECT_MONITOR_SENSE_OUTPUT_HTPLG; | |
343 | break; | |
344 | } | |
345 | ||
346 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_DETECT, detectReg); | |
347 | } | |
348 | ||
349 | /* | |
350 | * sii164EnableHotPlugDetection | |
351 | * This function enables the Hot Plug detection. | |
352 | * | |
353 | * enableHotPlug - Enable (=1) / disable (=0) Hot Plug detection | |
354 | */ | |
355 | void sii164EnableHotPlugDetection( | |
356 | unsigned char enableHotPlug | |
357 | ) | |
358 | { | |
359 | unsigned char detectReg; | |
360 | detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT); | |
361 | ||
362 | /* Depending on each DVI controller, need to enable the hot plug based on each | |
363 | individual chip design. */ | |
364 | if (enableHotPlug != 0) | |
365 | sii164SelectHotPlugDetectionMode(SII164_HOTPLUG_USE_MDI); | |
366 | else | |
367 | sii164SelectHotPlugDetectionMode(SII164_HOTPLUG_DISABLE); | |
368 | } | |
369 | ||
370 | /* | |
371 | * sii164IsConnected | |
372 | * Check if the DVI Monitor is connected. | |
373 | * | |
374 | * Output: | |
375 | * 0 - Not Connected | |
376 | * 1 - Connected | |
377 | */ | |
6fa7db83 | 378 | unsigned char sii164IsConnected(void) |
81dee67e SM |
379 | { |
380 | unsigned char hotPlugValue; | |
381 | ||
382 | hotPlugValue = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & SII164_DETECT_HOT_PLUG_STATUS_MASK; | |
383 | if (hotPlugValue == SII164_DETECT_HOT_PLUG_STATUS_ON) | |
384 | return 1; | |
385 | else | |
386 | return 0; | |
387 | } | |
388 | ||
389 | /* | |
390 | * sii164CheckInterrupt | |
391 | * Checks if interrupt has occured. | |
392 | * | |
393 | * Output: | |
394 | * 0 - No interrupt | |
395 | * 1 - Interrupt occurs | |
396 | */ | |
6fa7db83 | 397 | unsigned char sii164CheckInterrupt(void) |
81dee67e SM |
398 | { |
399 | unsigned char detectReg; | |
400 | ||
401 | detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT) & SII164_DETECT_MONITOR_STATE_MASK; | |
402 | if (detectReg == SII164_DETECT_MONITOR_STATE_CHANGE) | |
403 | return 1; | |
404 | else | |
405 | return 0; | |
406 | } | |
407 | ||
408 | /* | |
409 | * sii164ClearInterrupt | |
410 | * Clear the hot plug interrupt. | |
411 | */ | |
6fa7db83 | 412 | void sii164ClearInterrupt(void) |
81dee67e SM |
413 | { |
414 | unsigned char detectReg; | |
415 | ||
416 | /* Clear the MDI interrupt */ | |
417 | detectReg = i2cReadReg(SII164_I2C_ADDRESS, SII164_DETECT); | |
418 | i2cWriteReg(SII164_I2C_ADDRESS, SII164_DETECT, detectReg | SII164_DETECT_MONITOR_STATE_CLEAR); | |
419 | } | |
420 | ||
421 | #endif | |
422 | ||
423 | #endif | |
424 | ||
425 |