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
66 #define SILPTR(d) ((SIL164Ptr)(d->DriverPrivate.ptr))
68 static bool sil164_readb(struct intel_dvo_device *dvo, int addr, uint8_t *ch)
70 struct intel_iic_softc *sc;
71 struct sil164_priv *sil = dvo->dev_priv;
72 struct i2c_adapter *adapter = dvo->i2c_bus;
76 struct i2c_msg msgs[] = {
78 .slave = dvo->slave_addr << 1,
84 .slave = dvo->slave_addr << 1,
91 *ch = 0; /* silence gcc warnings */
95 sc = device_get_softc(adapter);
97 if (iicbus_transfer(adapter, msgs, 2) == 0) {
103 DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n",
104 addr, sc->name, dvo->slave_addr);
109 static bool sil164_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch)
111 struct intel_iic_softc *sc;
112 struct sil164_priv *sil = dvo->dev_priv;
113 struct i2c_adapter *adapter = dvo->i2c_bus;
115 struct i2c_msg msg = {
116 .slave = dvo->slave_addr << 1,
125 sc = device_get_softc(adapter);
127 if (iicbus_transfer(adapter, &msg, 1) == 0)
131 DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n",
132 addr, sc->name, dvo->slave_addr);
138 /* Silicon Image 164 driver for chip on i2c bus */
139 static bool sil164_init(struct intel_dvo_device *dvo,
140 struct i2c_adapter *adapter)
142 struct intel_iic_softc *sc;
143 /* this will detect the SIL164 chip on the specified i2c bus */
144 struct sil164_priv *sil;
147 sc = device_get_softc(adapter);
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_KMS("sil164 not detected got %d: from %s Slave %d.\n",
162 ch, sc->name, dvo->slave_addr);
166 if (!sil164_readb(dvo, SIL164_DID_LO, &ch))
169 if (ch != (SIL164_DID & 0xff)) {
170 DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n",
171 ch, sc->name, dvo->slave_addr);
176 DRM_DEBUG_KMS("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 const struct drm_display_mode *mode,
204 const 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, bool enable)
226 ret = sil164_readb(dvo, SIL164_REG8, &ch);
235 sil164_writeb(dvo, SIL164_REG8, ch);
239 static bool sil164_get_hw_state(struct intel_dvo_device *dvo)
244 ret = sil164_readb(dvo, SIL164_REG8, &ch);
248 if (ch & SIL164_8_PD)
254 static void sil164_dump_regs(struct intel_dvo_device *dvo)
258 sil164_readb(dvo, SIL164_FREQ_LO, &val);
259 DRM_DEBUG_KMS("SIL164_FREQ_LO: 0x%02x\n", val);
260 sil164_readb(dvo, SIL164_FREQ_HI, &val);
261 DRM_DEBUG_KMS("SIL164_FREQ_HI: 0x%02x\n", val);
262 sil164_readb(dvo, SIL164_REG8, &val);
263 DRM_DEBUG_KMS("SIL164_REG8: 0x%02x\n", val);
264 sil164_readb(dvo, SIL164_REG9, &val);
265 DRM_DEBUG_KMS("SIL164_REG9: 0x%02x\n", val);
266 sil164_readb(dvo, SIL164_REGC, &val);
267 DRM_DEBUG_KMS("SIL164_REGC: 0x%02x\n", val);
270 static void sil164_destroy(struct intel_dvo_device *dvo)
272 struct sil164_priv *sil = dvo->dev_priv;
276 dvo->dev_priv = NULL;
280 struct intel_dvo_dev_ops sil164_ops = {
282 .detect = sil164_detect,
283 .mode_valid = sil164_mode_valid,
284 .mode_set = sil164_mode_set,
286 .get_hw_state = sil164_get_hw_state,
287 .dump_regs = sil164_dump_regs,
288 .destroy = sil164_destroy,