Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2007 Dave Mueller |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 21 | * IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Dave Mueller <dave.mueller@gmx.ch> |
| 25 | * |
| 26 | */ |
| 27 | |
| 28 | #include "dvo.h" |
| 29 | |
| 30 | /* register definitions according to the TFP410 data sheet */ |
| 31 | #define TFP410_VID 0x014C |
| 32 | #define TFP410_DID 0x0410 |
| 33 | |
| 34 | #define TFP410_VID_LO 0x00 |
| 35 | #define TFP410_VID_HI 0x01 |
| 36 | #define TFP410_DID_LO 0x02 |
| 37 | #define TFP410_DID_HI 0x03 |
| 38 | #define TFP410_REV 0x04 |
| 39 | |
| 40 | #define TFP410_CTL_1 0x08 |
| 41 | #define TFP410_CTL_1_TDIS (1<<6) |
| 42 | #define TFP410_CTL_1_VEN (1<<5) |
| 43 | #define TFP410_CTL_1_HEN (1<<4) |
| 44 | #define TFP410_CTL_1_DSEL (1<<3) |
| 45 | #define TFP410_CTL_1_BSEL (1<<2) |
| 46 | #define TFP410_CTL_1_EDGE (1<<1) |
| 47 | #define TFP410_CTL_1_PD (1<<0) |
| 48 | |
| 49 | #define TFP410_CTL_2 0x09 |
| 50 | #define TFP410_CTL_2_VLOW (1<<7) |
| 51 | #define TFP410_CTL_2_MSEL_MASK (0x7<<4) |
| 52 | #define TFP410_CTL_2_MSEL (1<<4) |
| 53 | #define TFP410_CTL_2_TSEL (1<<3) |
| 54 | #define TFP410_CTL_2_RSEN (1<<2) |
| 55 | #define TFP410_CTL_2_HTPLG (1<<1) |
| 56 | #define TFP410_CTL_2_MDI (1<<0) |
| 57 | |
| 58 | #define TFP410_CTL_3 0x0A |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 59 | #define TFP410_CTL_3_DK_MASK (0x7<<5) |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 60 | #define TFP410_CTL_3_DK (1<<5) |
| 61 | #define TFP410_CTL_3_DKEN (1<<4) |
| 62 | #define TFP410_CTL_3_CTL_MASK (0x7<<1) |
| 63 | #define TFP410_CTL_3_CTL (1<<1) |
| 64 | |
| 65 | #define TFP410_USERCFG 0x0B |
| 66 | |
| 67 | #define TFP410_DE_DLY 0x32 |
| 68 | |
| 69 | #define TFP410_DE_CTL 0x33 |
| 70 | #define TFP410_DE_CTL_DEGEN (1<<6) |
| 71 | #define TFP410_DE_CTL_VSPOL (1<<5) |
| 72 | #define TFP410_DE_CTL_HSPOL (1<<4) |
| 73 | #define TFP410_DE_CTL_DEDLY8 (1<<0) |
| 74 | |
| 75 | #define TFP410_DE_TOP 0x34 |
| 76 | |
| 77 | #define TFP410_DE_CNT_LO 0x36 |
| 78 | #define TFP410_DE_CNT_HI 0x37 |
| 79 | |
| 80 | #define TFP410_DE_LIN_LO 0x38 |
| 81 | #define TFP410_DE_LIN_HI 0x39 |
| 82 | |
| 83 | #define TFP410_H_RES_LO 0x3A |
| 84 | #define TFP410_H_RES_HI 0x3B |
| 85 | |
| 86 | #define TFP410_V_RES_LO 0x3C |
| 87 | #define TFP410_V_RES_HI 0x3D |
| 88 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 89 | struct tfp410_priv { |
| 90 | bool quiet; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 91 | }; |
| 92 | |
| 93 | static bool tfp410_readb(struct intel_dvo_device *dvo, int addr, uint8_t *ch) |
| 94 | { |
| 95 | struct tfp410_priv *tfp = dvo->dev_priv; |
Keith Packard | f9c10a9 | 2009-05-30 12:16:25 -0700 | [diff] [blame] | 96 | struct i2c_adapter *adapter = dvo->i2c_bus; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 97 | u8 out_buf[2]; |
| 98 | u8 in_buf[2]; |
| 99 | |
| 100 | struct i2c_msg msgs[] = { |
| 101 | { |
Keith Packard | f9c10a9 | 2009-05-30 12:16:25 -0700 | [diff] [blame] | 102 | .addr = dvo->slave_addr, |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 103 | .flags = 0, |
| 104 | .len = 1, |
| 105 | .buf = out_buf, |
| 106 | }, |
| 107 | { |
Keith Packard | f9c10a9 | 2009-05-30 12:16:25 -0700 | [diff] [blame] | 108 | .addr = dvo->slave_addr, |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 109 | .flags = I2C_M_RD, |
| 110 | .len = 1, |
| 111 | .buf = in_buf, |
| 112 | } |
| 113 | }; |
| 114 | |
| 115 | out_buf[0] = addr; |
| 116 | out_buf[1] = 0; |
| 117 | |
Chris Wilson | f899fc6 | 2010-07-20 15:44:45 -0700 | [diff] [blame] | 118 | if (i2c_transfer(adapter, msgs, 2) == 2) { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 119 | *ch = in_buf[0]; |
| 120 | return true; |
| 121 | }; |
| 122 | |
| 123 | if (!tfp->quiet) { |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 124 | DRM_DEBUG_KMS("Unable to read register 0x%02x from %s:%02x.\n", |
Chris Wilson | f899fc6 | 2010-07-20 15:44:45 -0700 | [diff] [blame] | 125 | addr, adapter->name, dvo->slave_addr); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 126 | } |
| 127 | return false; |
| 128 | } |
| 129 | |
| 130 | static bool tfp410_writeb(struct intel_dvo_device *dvo, int addr, uint8_t ch) |
| 131 | { |
| 132 | struct tfp410_priv *tfp = dvo->dev_priv; |
Keith Packard | f9c10a9 | 2009-05-30 12:16:25 -0700 | [diff] [blame] | 133 | struct i2c_adapter *adapter = dvo->i2c_bus; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 134 | uint8_t out_buf[2]; |
| 135 | struct i2c_msg msg = { |
Keith Packard | f9c10a9 | 2009-05-30 12:16:25 -0700 | [diff] [blame] | 136 | .addr = dvo->slave_addr, |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 137 | .flags = 0, |
| 138 | .len = 2, |
| 139 | .buf = out_buf, |
| 140 | }; |
| 141 | |
| 142 | out_buf[0] = addr; |
| 143 | out_buf[1] = ch; |
| 144 | |
Chris Wilson | f899fc6 | 2010-07-20 15:44:45 -0700 | [diff] [blame] | 145 | if (i2c_transfer(adapter, &msg, 1) == 1) |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 146 | return true; |
| 147 | |
| 148 | if (!tfp->quiet) { |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 149 | DRM_DEBUG_KMS("Unable to write register 0x%02x to %s:%d.\n", |
Chris Wilson | f899fc6 | 2010-07-20 15:44:45 -0700 | [diff] [blame] | 150 | addr, adapter->name, dvo->slave_addr); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 151 | } |
| 152 | |
| 153 | return false; |
| 154 | } |
| 155 | |
| 156 | static int tfp410_getid(struct intel_dvo_device *dvo, int addr) |
| 157 | { |
| 158 | uint8_t ch1, ch2; |
| 159 | |
| 160 | if (tfp410_readb(dvo, addr+0, &ch1) && |
| 161 | tfp410_readb(dvo, addr+1, &ch2)) |
| 162 | return ((ch2 << 8) & 0xFF00) | (ch1 & 0x00FF); |
| 163 | |
| 164 | return -1; |
| 165 | } |
| 166 | |
| 167 | /* Ti TFP410 driver for chip on i2c bus */ |
| 168 | static bool tfp410_init(struct intel_dvo_device *dvo, |
Keith Packard | f9c10a9 | 2009-05-30 12:16:25 -0700 | [diff] [blame] | 169 | struct i2c_adapter *adapter) |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 170 | { |
| 171 | /* this will detect the tfp410 chip on the specified i2c bus */ |
| 172 | struct tfp410_priv *tfp; |
| 173 | int id; |
| 174 | |
| 175 | tfp = kzalloc(sizeof(struct tfp410_priv), GFP_KERNEL); |
| 176 | if (tfp == NULL) |
| 177 | return false; |
| 178 | |
Keith Packard | f9c10a9 | 2009-05-30 12:16:25 -0700 | [diff] [blame] | 179 | dvo->i2c_bus = adapter; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 180 | dvo->dev_priv = tfp; |
| 181 | tfp->quiet = true; |
| 182 | |
| 183 | if ((id = tfp410_getid(dvo, TFP410_VID_LO)) != TFP410_VID) { |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 184 | DRM_DEBUG_KMS("tfp410 not detected got VID %X: from %s " |
| 185 | "Slave %d.\n", |
Keith Packard | f9c10a9 | 2009-05-30 12:16:25 -0700 | [diff] [blame] | 186 | id, adapter->name, dvo->slave_addr); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 187 | goto out; |
| 188 | } |
| 189 | |
| 190 | if ((id = tfp410_getid(dvo, TFP410_DID_LO)) != TFP410_DID) { |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 191 | DRM_DEBUG_KMS("tfp410 not detected got DID %X: from %s " |
| 192 | "Slave %d.\n", |
Keith Packard | f9c10a9 | 2009-05-30 12:16:25 -0700 | [diff] [blame] | 193 | id, adapter->name, dvo->slave_addr); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 194 | goto out; |
| 195 | } |
| 196 | tfp->quiet = false; |
| 197 | return true; |
| 198 | out: |
| 199 | kfree(tfp); |
| 200 | return false; |
| 201 | } |
| 202 | |
| 203 | static enum drm_connector_status tfp410_detect(struct intel_dvo_device *dvo) |
| 204 | { |
| 205 | enum drm_connector_status ret = connector_status_disconnected; |
| 206 | uint8_t ctl2; |
| 207 | |
| 208 | if (tfp410_readb(dvo, TFP410_CTL_2, &ctl2)) { |
Dave Müller | f458823 | 2010-06-04 16:39:59 -0700 | [diff] [blame] | 209 | if (ctl2 & TFP410_CTL_2_RSEN) |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 210 | ret = connector_status_connected; |
| 211 | else |
| 212 | ret = connector_status_disconnected; |
| 213 | } |
| 214 | |
| 215 | return ret; |
| 216 | } |
| 217 | |
| 218 | static enum drm_mode_status tfp410_mode_valid(struct intel_dvo_device *dvo, |
| 219 | struct drm_display_mode *mode) |
| 220 | { |
| 221 | return MODE_OK; |
| 222 | } |
| 223 | |
| 224 | static void tfp410_mode_set(struct intel_dvo_device *dvo, |
| 225 | struct drm_display_mode *mode, |
| 226 | struct drm_display_mode *adjusted_mode) |
| 227 | { |
Akshay Joshi | 0206e35 | 2011-08-16 15:34:10 -0400 | [diff] [blame] | 228 | /* As long as the basics are set up, since we don't have clock dependencies |
| 229 | * in the mode setup, we can just leave the registers alone and everything |
| 230 | * will work fine. |
| 231 | */ |
| 232 | /* don't do much */ |
| 233 | return; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | /* set the tfp410 power state */ |
| 237 | static void tfp410_dpms(struct intel_dvo_device *dvo, int mode) |
| 238 | { |
| 239 | uint8_t ctl1; |
| 240 | |
| 241 | if (!tfp410_readb(dvo, TFP410_CTL_1, &ctl1)) |
| 242 | return; |
| 243 | |
| 244 | if (mode == DRM_MODE_DPMS_ON) |
| 245 | ctl1 |= TFP410_CTL_1_PD; |
| 246 | else |
| 247 | ctl1 &= ~TFP410_CTL_1_PD; |
| 248 | |
| 249 | tfp410_writeb(dvo, TFP410_CTL_1, ctl1); |
| 250 | } |
| 251 | |
| 252 | static void tfp410_dump_regs(struct intel_dvo_device *dvo) |
| 253 | { |
| 254 | uint8_t val, val2; |
| 255 | |
| 256 | tfp410_readb(dvo, TFP410_REV, &val); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 257 | DRM_LOG_KMS("TFP410_REV: 0x%02X\n", val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 258 | tfp410_readb(dvo, TFP410_CTL_1, &val); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 259 | DRM_LOG_KMS("TFP410_CTL1: 0x%02X\n", val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 260 | tfp410_readb(dvo, TFP410_CTL_2, &val); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 261 | DRM_LOG_KMS("TFP410_CTL2: 0x%02X\n", val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 262 | tfp410_readb(dvo, TFP410_CTL_3, &val); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 263 | DRM_LOG_KMS("TFP410_CTL3: 0x%02X\n", val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 264 | tfp410_readb(dvo, TFP410_USERCFG, &val); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 265 | DRM_LOG_KMS("TFP410_USERCFG: 0x%02X\n", val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 266 | tfp410_readb(dvo, TFP410_DE_DLY, &val); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 267 | DRM_LOG_KMS("TFP410_DE_DLY: 0x%02X\n", val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 268 | tfp410_readb(dvo, TFP410_DE_CTL, &val); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 269 | DRM_LOG_KMS("TFP410_DE_CTL: 0x%02X\n", val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 270 | tfp410_readb(dvo, TFP410_DE_TOP, &val); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 271 | DRM_LOG_KMS("TFP410_DE_TOP: 0x%02X\n", val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 272 | tfp410_readb(dvo, TFP410_DE_CNT_LO, &val); |
| 273 | tfp410_readb(dvo, TFP410_DE_CNT_HI, &val2); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 274 | DRM_LOG_KMS("TFP410_DE_CNT: 0x%02X%02X\n", val2, val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 275 | tfp410_readb(dvo, TFP410_DE_LIN_LO, &val); |
| 276 | tfp410_readb(dvo, TFP410_DE_LIN_HI, &val2); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 277 | DRM_LOG_KMS("TFP410_DE_LIN: 0x%02X%02X\n", val2, val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 278 | tfp410_readb(dvo, TFP410_H_RES_LO, &val); |
| 279 | tfp410_readb(dvo, TFP410_H_RES_HI, &val2); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 280 | DRM_LOG_KMS("TFP410_H_RES: 0x%02X%02X\n", val2, val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 281 | tfp410_readb(dvo, TFP410_V_RES_LO, &val); |
| 282 | tfp410_readb(dvo, TFP410_V_RES_HI, &val2); |
Zhao Yakui | d0c3b04 | 2009-10-09 11:39:43 +0800 | [diff] [blame] | 283 | DRM_LOG_KMS("TFP410_V_RES: 0x%02X%02X\n", val2, val); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 284 | } |
| 285 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 286 | static void tfp410_destroy(struct intel_dvo_device *dvo) |
| 287 | { |
| 288 | struct tfp410_priv *tfp = dvo->dev_priv; |
| 289 | |
| 290 | if (tfp) { |
| 291 | kfree(tfp); |
| 292 | dvo->dev_priv = NULL; |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | struct intel_dvo_dev_ops tfp410_ops = { |
| 297 | .init = tfp410_init, |
| 298 | .detect = tfp410_detect, |
| 299 | .mode_valid = tfp410_mode_valid, |
| 300 | .mode_set = tfp410_mode_set, |
| 301 | .dpms = tfp410_dpms, |
| 302 | .dump_regs = tfp410_dump_regs, |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 303 | .destroy = tfp410_destroy, |
| 304 | }; |