1 /**************************************************************************
3 Copyright © 2006 Dave Airlie
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:
15 The above copyright notice and this permission notice (including the
16 next paragraph) shall be included in all copies or substantial portions
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.
27 **************************************************************************/
31 #define SIL164_VID 0x0001
32 #define SIL164_DID 0x0006
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
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)
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)
59 #define SIL164_REGC 0x0c
61 struct sil164_save_rec {
70 struct sil164_save_rec save_regs;
71 struct sil164_save_rec mode_regs;
74 #define SILPTR(d) ((SIL164Ptr)(d->DriverPrivate.ptr))
76 static bool sil164_readb(struct intel_dvo_device *dvo, int addr, uint8_t *ch)
78 struct sil164_priv *sil = dvo->dev_priv;
79 struct i2c_adapter *adapter = dvo->i2c_bus;
80 struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
84 struct i2c_msg msgs[] = {
86 .addr = dvo->slave_addr,
92 .addr = dvo->slave_addr,
102 if (i2c_transfer(&i2cbus->adapter, msgs, 2) == 2) {
108 DRM_DEBUG("Unable to read register 0x%02x from %s:%02x.\n",
109 addr, i2cbus->adapter.name, dvo->slave_addr);
114 static bool sil164_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch)
116 struct sil164_priv *sil= dvo->dev_priv;
117 struct i2c_adapter *adapter = dvo->i2c_bus;
118 struct intel_i2c_chan *i2cbus = container_of(adapter, struct intel_i2c_chan, adapter);
120 struct i2c_msg msg = {
121 .addr = dvo->slave_addr,
130 if (i2c_transfer(&i2cbus->adapter, &msg, 1) == 1)
134 DRM_DEBUG("Unable to write register 0x%02x to %s:%d.\n",
135 addr, i2cbus->adapter.name, dvo->slave_addr);
141 /* Silicon Image 164 driver for chip on i2c bus */
142 static bool sil164_init(struct intel_dvo_device *dvo,
143 struct i2c_adapter *adapter)
145 /* this will detect the SIL164 chip on the specified i2c bus */
146 struct sil164_priv *sil;
149 sil = kzalloc(sizeof(struct sil164_priv), GFP_KERNEL);
153 dvo->i2c_bus = adapter;
157 if (!sil164_readb(dvo, SIL164_VID_LO, &ch))
160 if (ch != (SIL164_VID & 0xff)) {
161 DRM_DEBUG("sil164 not detected got %d: from %s Slave %d.\n",
162 ch, adapter->name, dvo->slave_addr);
166 if (!sil164_readb(dvo, SIL164_DID_LO, &ch))
169 if (ch != (SIL164_DID & 0xff)) {
170 DRM_DEBUG("sil164 not detected got %d: from %s Slave %d.\n",
171 ch, adapter->name, dvo->slave_addr);
176 DRM_DEBUG("init sil164 dvo controller successfully!\n");
184 static enum drm_connector_status sil164_detect(struct intel_dvo_device *dvo)
188 sil164_readb(dvo, SIL164_REG9, ®9);
190 if (reg9 & SIL164_9_HTPLG)
191 return connector_status_connected;
193 return connector_status_disconnected;
196 static enum drm_mode_status sil164_mode_valid(struct intel_dvo_device *dvo,
197 struct drm_display_mode *mode)
202 static void sil164_mode_set(struct intel_dvo_device *dvo,
203 struct drm_display_mode *mode,
204 struct drm_display_mode *adjusted_mode)
206 /* As long as the basics are set up, since we don't have clock
207 * dependencies in the mode setup, we can just leave the
208 * registers alone and everything will work fine.
210 /* recommended programming sequence from doc */
211 /*sil164_writeb(sil, 0x08, 0x30);
212 sil164_writeb(sil, 0x09, 0x00);
213 sil164_writeb(sil, 0x0a, 0x90);
214 sil164_writeb(sil, 0x0c, 0x89);
215 sil164_writeb(sil, 0x08, 0x31);*/
220 /* set the SIL164 power state */
221 static void sil164_dpms(struct intel_dvo_device *dvo, int mode)
226 ret = sil164_readb(dvo, SIL164_REG8, &ch);
230 if (mode == DRM_MODE_DPMS_ON)
235 sil164_writeb(dvo, SIL164_REG8, ch);
239 static void sil164_dump_regs(struct intel_dvo_device *dvo)
243 sil164_readb(dvo, SIL164_FREQ_LO, &val);
244 DRM_DEBUG("SIL164_FREQ_LO: 0x%02x\n", val);
245 sil164_readb(dvo, SIL164_FREQ_HI, &val);
246 DRM_DEBUG("SIL164_FREQ_HI: 0x%02x\n", val);
247 sil164_readb(dvo, SIL164_REG8, &val);
248 DRM_DEBUG("SIL164_REG8: 0x%02x\n", val);
249 sil164_readb(dvo, SIL164_REG9, &val);
250 DRM_DEBUG("SIL164_REG9: 0x%02x\n", val);
251 sil164_readb(dvo, SIL164_REGC, &val);
252 DRM_DEBUG("SIL164_REGC: 0x%02x\n", val);
255 static void sil164_save(struct intel_dvo_device *dvo)
257 struct sil164_priv *sil= dvo->dev_priv;
259 if (!sil164_readb(dvo, SIL164_REG8, &sil->save_regs.reg8))
262 if (!sil164_readb(dvo, SIL164_REG9, &sil->save_regs.reg9))
265 if (!sil164_readb(dvo, SIL164_REGC, &sil->save_regs.regc))
271 static void sil164_restore(struct intel_dvo_device *dvo)
273 struct sil164_priv *sil = dvo->dev_priv;
275 /* Restore it powered down initially */
276 sil164_writeb(dvo, SIL164_REG8, sil->save_regs.reg8 & ~0x1);
278 sil164_writeb(dvo, SIL164_REG9, sil->save_regs.reg9);
279 sil164_writeb(dvo, SIL164_REGC, sil->save_regs.regc);
280 sil164_writeb(dvo, SIL164_REG8, sil->save_regs.reg8);
283 static void sil164_destroy(struct intel_dvo_device *dvo)
285 struct sil164_priv *sil = dvo->dev_priv;
289 dvo->dev_priv = NULL;
293 struct intel_dvo_dev_ops sil164_ops = {
295 .detect = sil164_detect,
296 .mode_valid = sil164_mode_valid,
297 .mode_set = sil164_mode_set,
299 .dump_regs = sil164_dump_regs,
301 .restore = sil164_restore,
302 .destroy = sil164_destroy,