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2330 | Serge | 1 | /************************************************************************** |
2 | |||
3 | Copyright © 2006 Dave Airlie |
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4 | |||
5 | All Rights Reserved. |
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6 | |||
7 | Permission is hereby granted, free of charge, to any person obtaining a |
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8 | copy of this software and associated documentation files (the |
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9 | "Software"), to deal in the Software without restriction, including |
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10 | without limitation the rights to use, copy, modify, merge, publish, |
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11 | distribute, sub license, and/or sell copies of the Software, and to |
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12 | permit persons to whom the Software is furnished to do so, subject to |
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13 | the following conditions: |
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14 | |||
15 | The above copyright notice and this permission notice (including the |
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16 | next paragraph) shall be included in all copies or substantial portions |
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17 | of the Software. |
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18 | |||
19 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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20 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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21 | MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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22 | IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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23 | ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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24 | TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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25 | SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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26 | |||
27 | **************************************************************************/ |
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28 | |||
29 | #include "dvo.h" |
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30 | |||
31 | #define SIL164_VID 0x0001 |
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32 | #define SIL164_DID 0x0006 |
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33 | |||
34 | #define SIL164_VID_LO 0x00 |
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35 | #define SIL164_VID_HI 0x01 |
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36 | #define SIL164_DID_LO 0x02 |
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37 | #define SIL164_DID_HI 0x03 |
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38 | #define SIL164_REV 0x04 |
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39 | #define SIL164_RSVD 0x05 |
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40 | #define SIL164_FREQ_LO 0x06 |
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41 | #define SIL164_FREQ_HI 0x07 |
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42 | |||
43 | #define SIL164_REG8 0x08 |
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44 | #define SIL164_8_VEN (1<<5) |
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45 | #define SIL164_8_HEN (1<<4) |
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46 | #define SIL164_8_DSEL (1<<3) |
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47 | #define SIL164_8_BSEL (1<<2) |
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48 | #define SIL164_8_EDGE (1<<1) |
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49 | #define SIL164_8_PD (1<<0) |
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50 | |||
51 | #define SIL164_REG9 0x09 |
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52 | #define SIL164_9_VLOW (1<<7) |
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53 | #define SIL164_9_MSEL_MASK (0x7<<4) |
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54 | #define SIL164_9_TSEL (1<<3) |
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55 | #define SIL164_9_RSEN (1<<2) |
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56 | #define SIL164_9_HTPLG (1<<1) |
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57 | #define SIL164_9_MDI (1<<0) |
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58 | |||
59 | #define SIL164_REGC 0x0c |
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60 | |||
61 | struct sil164_priv { |
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62 | //I2CDevRec d; |
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63 | bool quiet; |
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64 | }; |
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65 | |||
66 | #define SILPTR(d) ((SIL164Ptr)(d->DriverPrivate.ptr)) |
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67 | |||
68 | static bool sil164_readb(struct intel_dvo_device *dvo, int addr, uint8_t *ch) |
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69 | { |
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70 | struct sil164_priv *sil = dvo->dev_priv; |
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71 | struct i2c_adapter *adapter = dvo->i2c_bus; |
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72 | u8 out_buf[2]; |
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73 | u8 in_buf[2]; |
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74 | |||
75 | struct i2c_msg msgs[] = { |
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76 | { |
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77 | .addr = dvo->slave_addr, |
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78 | .flags = 0, |
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79 | .len = 1, |
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80 | .buf = out_buf, |
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81 | }, |
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82 | { |
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83 | .addr = dvo->slave_addr, |
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84 | .flags = I2C_M_RD, |
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85 | .len = 1, |
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86 | .buf = in_buf, |
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87 | } |
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88 | }; |
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89 | |||
90 | out_buf[0] = addr; |
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91 | out_buf[1] = 0; |
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92 | |||
93 | if (i2c_transfer(adapter, msgs, 2) == 2) { |
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94 | *ch = in_buf[0]; |
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95 | return true; |
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5060 | serge | 96 | } |
2330 | Serge | 97 | |
98 | if (!sil->quiet) { |
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99 | DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n", |
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100 | addr, adapter->name, dvo->slave_addr); |
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101 | } |
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102 | return false; |
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103 | } |
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104 | |||
105 | static bool sil164_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch) |
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106 | { |
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2342 | Serge | 107 | struct sil164_priv *sil = dvo->dev_priv; |
2330 | Serge | 108 | struct i2c_adapter *adapter = dvo->i2c_bus; |
109 | uint8_t out_buf[2]; |
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110 | struct i2c_msg msg = { |
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111 | .addr = dvo->slave_addr, |
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112 | .flags = 0, |
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113 | .len = 2, |
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114 | .buf = out_buf, |
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115 | }; |
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116 | |||
117 | out_buf[0] = addr; |
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118 | out_buf[1] = ch; |
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119 | |||
120 | if (i2c_transfer(adapter, &msg, 1) == 1) |
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121 | return true; |
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122 | |||
123 | if (!sil->quiet) { |
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124 | DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n", |
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125 | addr, adapter->name, dvo->slave_addr); |
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126 | } |
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127 | |||
128 | return false; |
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129 | } |
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130 | |||
131 | /* Silicon Image 164 driver for chip on i2c bus */ |
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132 | static bool sil164_init(struct intel_dvo_device *dvo, |
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133 | struct i2c_adapter *adapter) |
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134 | { |
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135 | /* this will detect the SIL164 chip on the specified i2c bus */ |
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136 | struct sil164_priv *sil; |
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137 | unsigned char ch; |
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138 | |||
139 | sil = kzalloc(sizeof(struct sil164_priv), GFP_KERNEL); |
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140 | if (sil == NULL) |
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141 | return false; |
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142 | |||
143 | dvo->i2c_bus = adapter; |
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144 | dvo->dev_priv = sil; |
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145 | sil->quiet = true; |
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146 | |||
147 | if (!sil164_readb(dvo, SIL164_VID_LO, &ch)) |
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148 | goto out; |
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149 | |||
150 | if (ch != (SIL164_VID & 0xff)) { |
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151 | DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n", |
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152 | ch, adapter->name, dvo->slave_addr); |
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153 | goto out; |
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154 | } |
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155 | |||
156 | if (!sil164_readb(dvo, SIL164_DID_LO, &ch)) |
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157 | goto out; |
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158 | |||
159 | if (ch != (SIL164_DID & 0xff)) { |
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160 | DRM_DEBUG_KMS("sil164 not detected got %d: from %s Slave %d.\n", |
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161 | ch, adapter->name, dvo->slave_addr); |
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162 | goto out; |
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163 | } |
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164 | sil->quiet = false; |
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165 | |||
166 | DRM_DEBUG_KMS("init sil164 dvo controller successfully!\n"); |
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167 | return true; |
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168 | |||
169 | out: |
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170 | kfree(sil); |
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171 | return false; |
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172 | } |
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173 | |||
174 | static enum drm_connector_status sil164_detect(struct intel_dvo_device *dvo) |
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175 | { |
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176 | uint8_t reg9; |
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177 | |||
178 | sil164_readb(dvo, SIL164_REG9, ®9); |
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179 | |||
180 | if (reg9 & SIL164_9_HTPLG) |
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181 | return connector_status_connected; |
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182 | else |
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183 | return connector_status_disconnected; |
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184 | } |
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185 | |||
186 | static enum drm_mode_status sil164_mode_valid(struct intel_dvo_device *dvo, |
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187 | struct drm_display_mode *mode) |
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188 | { |
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189 | return MODE_OK; |
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190 | } |
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191 | |||
192 | static void sil164_mode_set(struct intel_dvo_device *dvo, |
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6084 | serge | 193 | const struct drm_display_mode *mode, |
194 | const struct drm_display_mode *adjusted_mode) |
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2330 | Serge | 195 | { |
196 | /* As long as the basics are set up, since we don't have clock |
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197 | * dependencies in the mode setup, we can just leave the |
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198 | * registers alone and everything will work fine. |
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199 | */ |
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200 | /* recommended programming sequence from doc */ |
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201 | /*sil164_writeb(sil, 0x08, 0x30); |
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202 | sil164_writeb(sil, 0x09, 0x00); |
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203 | sil164_writeb(sil, 0x0a, 0x90); |
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204 | sil164_writeb(sil, 0x0c, 0x89); |
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205 | sil164_writeb(sil, 0x08, 0x31);*/ |
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206 | /* don't do much */ |
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207 | return; |
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208 | } |
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209 | |||
210 | /* set the SIL164 power state */ |
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3031 | serge | 211 | static void sil164_dpms(struct intel_dvo_device *dvo, bool enable) |
2330 | Serge | 212 | { |
213 | int ret; |
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214 | unsigned char ch; |
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215 | |||
216 | ret = sil164_readb(dvo, SIL164_REG8, &ch); |
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217 | if (ret == false) |
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218 | return; |
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219 | |||
3031 | serge | 220 | if (enable) |
2330 | Serge | 221 | ch |= SIL164_8_PD; |
222 | else |
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223 | ch &= ~SIL164_8_PD; |
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224 | |||
225 | sil164_writeb(dvo, SIL164_REG8, ch); |
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226 | return; |
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227 | } |
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228 | |||
3031 | serge | 229 | static bool sil164_get_hw_state(struct intel_dvo_device *dvo) |
230 | { |
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231 | int ret; |
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232 | unsigned char ch; |
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233 | |||
234 | ret = sil164_readb(dvo, SIL164_REG8, &ch); |
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235 | if (ret == false) |
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236 | return false; |
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237 | |||
238 | if (ch & SIL164_8_PD) |
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239 | return true; |
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240 | else |
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241 | return false; |
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242 | } |
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243 | |||
2330 | Serge | 244 | static void sil164_dump_regs(struct intel_dvo_device *dvo) |
245 | { |
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246 | uint8_t val; |
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247 | |||
248 | sil164_readb(dvo, SIL164_FREQ_LO, &val); |
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5060 | serge | 249 | DRM_DEBUG_KMS("SIL164_FREQ_LO: 0x%02x\n", val); |
2330 | Serge | 250 | sil164_readb(dvo, SIL164_FREQ_HI, &val); |
5060 | serge | 251 | DRM_DEBUG_KMS("SIL164_FREQ_HI: 0x%02x\n", val); |
2330 | Serge | 252 | sil164_readb(dvo, SIL164_REG8, &val); |
5060 | serge | 253 | DRM_DEBUG_KMS("SIL164_REG8: 0x%02x\n", val); |
2330 | Serge | 254 | sil164_readb(dvo, SIL164_REG9, &val); |
5060 | serge | 255 | DRM_DEBUG_KMS("SIL164_REG9: 0x%02x\n", val); |
2330 | Serge | 256 | sil164_readb(dvo, SIL164_REGC, &val); |
5060 | serge | 257 | DRM_DEBUG_KMS("SIL164_REGC: 0x%02x\n", val); |
2330 | Serge | 258 | } |
259 | |||
260 | static void sil164_destroy(struct intel_dvo_device *dvo) |
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261 | { |
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262 | struct sil164_priv *sil = dvo->dev_priv; |
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263 | |||
264 | if (sil) { |
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265 | kfree(sil); |
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266 | dvo->dev_priv = NULL; |
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267 | } |
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268 | } |
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269 | |||
270 | struct intel_dvo_dev_ops sil164_ops = { |
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271 | .init = sil164_init, |
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272 | .detect = sil164_detect, |
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273 | .mode_valid = sil164_mode_valid, |
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274 | .mode_set = sil164_mode_set, |
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275 | .dpms = sil164_dpms, |
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3031 | serge | 276 | .get_hw_state = sil164_get_hw_state, |
2330 | Serge | 277 | .dump_regs = sil164_dump_regs, |
278 | .destroy = sil164_destroy, |
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279 | };0) |