Dave Airlie | 746c1aa | 2009-12-08 07:07:28 +1000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2007-8 Advanced Micro Devices, Inc. |
| 3 | * Copyright 2008 Red Hat Inc. |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 6 | * copy of this software and associated documentation files (the "Software"), |
| 7 | * to deal in the Software without restriction, including without limitation |
| 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 9 | * and/or sell copies of the Software, and to permit persons to whom the |
| 10 | * Software is furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice shall be included in |
| 13 | * all copies or substantial portions of the 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| 19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| 20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| 21 | * OTHER DEALINGS IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: Dave Airlie |
| 24 | * Alex Deucher |
| 25 | */ |
| 26 | #include "drmP.h" |
| 27 | #include "radeon_drm.h" |
| 28 | #include "radeon.h" |
| 29 | |
| 30 | #include "atom.h" |
| 31 | #include "atom-bits.h" |
| 32 | #include "drm_dp_helper.h" |
| 33 | |
| 34 | #define DP_LINK_STATUS_SIZE 6 |
| 35 | |
| 36 | bool radeon_process_aux_ch(struct radeon_i2c_chan *chan, u8 *req_bytes, |
| 37 | int num_bytes, u8 *read_byte, |
| 38 | u8 read_buf_len, u8 delay) |
| 39 | { |
| 40 | struct drm_device *dev = chan->dev; |
| 41 | struct radeon_device *rdev = dev->dev_private; |
| 42 | PROCESS_AUX_CHANNEL_TRANSACTION_PS_ALLOCATION args; |
| 43 | int index = GetIndexIntoMasterTable(COMMAND, ProcessAuxChannelTransaction); |
| 44 | unsigned char *base; |
| 45 | |
| 46 | memset(&args, 0, sizeof(args)); |
| 47 | |
| 48 | base = (unsigned char *)rdev->mode_info.atom_context->scratch; |
| 49 | |
| 50 | memcpy(base, req_bytes, num_bytes); |
| 51 | |
| 52 | args.lpAuxRequest = 0; |
| 53 | args.lpDataOut = 16; |
| 54 | args.ucDataOutLen = 0; |
| 55 | args.ucChannelID = chan->i2c_id; |
| 56 | args.ucDelay = delay; |
| 57 | |
| 58 | atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); |
| 59 | |
| 60 | if (args.ucReplyStatus) { |
| 61 | DRM_ERROR("failed to get auxch %02x%02x %02x %02x 0x%02x %02x\n", |
| 62 | req_bytes[1], req_bytes[0], req_bytes[2], req_bytes[3], |
| 63 | chan->i2c_id, args.ucReplyStatus); |
| 64 | return false; |
| 65 | } |
| 66 | |
| 67 | if (args.ucDataOutLen && read_byte && read_buf_len) { |
| 68 | if (read_buf_len < args.ucDataOutLen) { |
| 69 | DRM_ERROR("Buffer to small for return answer %d %d\n", |
| 70 | read_buf_len, args.ucDataOutLen); |
| 71 | return false; |
| 72 | } |
| 73 | { |
| 74 | int len = min(read_buf_len, args.ucDataOutLen); |
| 75 | memcpy(read_byte, base + 16, len); |
| 76 | } |
| 77 | } |
| 78 | return true; |
| 79 | } |
| 80 | |
| 81 | int radeon_dp_encoder_service(struct radeon_device *rdev, int action, int dp_clock, |
| 82 | uint8_t ucconfig, uint8_t lane_num) |
| 83 | { |
| 84 | DP_ENCODER_SERVICE_PARAMETERS args; |
| 85 | int index = GetIndexIntoMasterTable(COMMAND, DPEncoderService); |
| 86 | |
| 87 | memset(&args, 0, sizeof(args)); |
| 88 | args.ucLinkClock = dp_clock / 10; |
| 89 | args.ucConfig = ucconfig; |
| 90 | args.ucAction = action; |
| 91 | args.ucLaneNum = lane_num; |
| 92 | args.ucStatus = 0; |
| 93 | |
| 94 | atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args); |
| 95 | return args.ucStatus; |
| 96 | } |
| 97 | |
| 98 | int radeon_dp_getsinktype(struct radeon_connector *radeon_connector) |
| 99 | { |
| 100 | struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv; |
| 101 | struct drm_device *dev = radeon_connector->base.dev; |
| 102 | struct radeon_device *rdev = dev->dev_private; |
| 103 | |
| 104 | return radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_GET_SINK_TYPE, 0, |
| 105 | radeon_dig_connector->uc_i2c_id, 0); |
| 106 | } |
| 107 | |
| 108 | union dig_transmitter_control { |
| 109 | DIG_TRANSMITTER_CONTROL_PS_ALLOCATION v1; |
| 110 | DIG_TRANSMITTER_CONTROL_PARAMETERS_V2 v2; |
| 111 | }; |
| 112 | |
| 113 | bool radeon_dp_aux_native_write(struct radeon_connector *radeon_connector, uint16_t address, |
| 114 | uint8_t send_bytes, uint8_t *send) |
| 115 | { |
| 116 | struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv; |
| 117 | struct drm_device *dev = radeon_connector->base.dev; |
| 118 | struct radeon_device *rdev = dev->dev_private; |
| 119 | u8 msg[20]; |
| 120 | u8 msg_len, dp_msg_len; |
| 121 | bool ret; |
| 122 | |
| 123 | dp_msg_len = 4; |
| 124 | msg[0] = address; |
| 125 | msg[1] = address >> 8; |
| 126 | msg[2] = AUX_NATIVE_WRITE << 4; |
| 127 | dp_msg_len += send_bytes; |
| 128 | msg[3] = (dp_msg_len << 4) | (send_bytes - 1); |
| 129 | |
| 130 | if (send_bytes > 16) |
| 131 | return false; |
| 132 | |
| 133 | memcpy(&msg[4], send, send_bytes); |
| 134 | msg_len = 4 + send_bytes; |
| 135 | ret = radeon_process_aux_ch(radeon_dig_connector->dp_i2c_bus, msg, msg_len, NULL, 0, 0); |
| 136 | return ret; |
| 137 | } |
| 138 | |
| 139 | bool radeon_dp_aux_native_read(struct radeon_connector *radeon_connector, uint16_t address, |
| 140 | uint8_t delay, uint8_t expected_bytes, |
| 141 | uint8_t *read_p) |
| 142 | { |
| 143 | struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv; |
| 144 | struct drm_device *dev = radeon_connector->base.dev; |
| 145 | struct radeon_device *rdev = dev->dev_private; |
| 146 | u8 msg[20]; |
| 147 | u8 msg_len, dp_msg_len; |
| 148 | bool ret = false; |
| 149 | msg_len = 4; |
| 150 | dp_msg_len = 4; |
| 151 | msg[0] = address; |
| 152 | msg[1] = address >> 8; |
| 153 | msg[2] = AUX_NATIVE_READ << 4; |
| 154 | msg[3] = (dp_msg_len) << 4; |
| 155 | msg[3] |= expected_bytes - 1; |
| 156 | |
| 157 | ret = radeon_process_aux_ch(radeon_dig_connector->dp_i2c_bus, msg, msg_len, read_p, expected_bytes, delay); |
| 158 | return ret; |
| 159 | } |
| 160 | |
| 161 | void radeon_dp_getdpcp(struct radeon_connector *radeon_connector) |
| 162 | { |
| 163 | struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv; |
| 164 | u8 msg[25]; |
| 165 | int ret; |
| 166 | |
| 167 | ret = radeon_dp_aux_native_read(radeon_connector, DP_DPCP_REV, 0, 8, msg); |
| 168 | if (ret) { |
| 169 | memcpy(radeon_dig_connector->dpcp, msg, 8); |
| 170 | { |
| 171 | int i; |
| 172 | printk("DPCP: "); |
| 173 | for (i = 0; i < 8; i++) |
| 174 | printk("%02x ", msg[i]); |
| 175 | printk("\n"); |
| 176 | } |
| 177 | } |
| 178 | radeon_dig_connector->dpcp[0] = 0; |
| 179 | return; |
| 180 | } |
| 181 | |
| 182 | static bool atom_dp_get_link_status(struct radeon_connector *radeon_connector, |
| 183 | u8 link_status[DP_LINK_STATUS_SIZE]) |
| 184 | { |
| 185 | int ret; |
| 186 | ret = radeon_dp_aux_native_read(radeon_connector, DP_LANE0_1_STATUS, 100, |
| 187 | DP_LINK_STATUS_SIZE, link_status); |
| 188 | if (!ret) { |
| 189 | DRM_ERROR("displayport link status failed\n"); |
| 190 | return false; |
| 191 | } |
| 192 | |
| 193 | DRM_INFO("link status %02x %02x %02x %02x %02x %02x\n", |
| 194 | link_status[0], link_status[1], link_status[2], |
| 195 | link_status[3], link_status[4], link_status[5]); |
| 196 | return true; |
| 197 | } |
| 198 | |
| 199 | static void dp_set_power(struct radeon_connector *radeon_connector, u8 power_state) |
| 200 | { |
| 201 | struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv; |
| 202 | if (radeon_dig_connector->dpcp[0] >= 0x11) { |
| 203 | radeon_dp_aux_native_write(radeon_connector, 0x600, 1, |
| 204 | &power_state); |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | static void dp_update_dpvs_emph(struct radeon_connector *radeon_connector, |
| 209 | u8 train_set[4]) |
| 210 | { |
| 211 | struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv; |
| 212 | |
| 213 | // radeon_dp_digtransmitter_setup_vsemph(); |
| 214 | radeon_dp_aux_native_write(radeon_connector, DP_TRAINING_LANE0_SET, |
| 215 | 0/* lc */, train_set); |
| 216 | } |
| 217 | |
| 218 | static void dp_set_training(struct radeon_connector *radeon_connector, |
| 219 | u8 training) |
| 220 | { |
| 221 | radeon_dp_aux_native_write(radeon_connector, DP_TRAINING_PATTERN_SET, |
| 222 | 1, &training); |
| 223 | } |
| 224 | |
| 225 | int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode, |
| 226 | uint8_t write_byte, uint8_t *read_byte) |
| 227 | { |
| 228 | struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data; |
| 229 | struct radeon_i2c_chan *auxch = (struct radeon_i2c_chan *)adapter; |
| 230 | int ret = 0; |
| 231 | uint16_t address = algo_data->address; |
| 232 | uint8_t msg[5]; |
| 233 | uint8_t reply[2]; |
| 234 | int msg_len, dp_msg_len; |
| 235 | int reply_bytes; |
| 236 | |
| 237 | /* Set up the command byte */ |
| 238 | if (mode & MODE_I2C_READ) |
| 239 | msg[2] = AUX_I2C_READ << 4; |
| 240 | else |
| 241 | msg[2] = AUX_I2C_WRITE << 4; |
| 242 | |
| 243 | if (!(mode & MODE_I2C_STOP)) |
| 244 | msg[2] |= AUX_I2C_MOT << 4; |
| 245 | |
| 246 | msg[0] = address; |
| 247 | msg[1] = address >> 8; |
| 248 | |
| 249 | reply_bytes = 1; |
| 250 | |
| 251 | msg_len = 4; |
| 252 | dp_msg_len = 3; |
| 253 | switch (mode) { |
| 254 | case MODE_I2C_WRITE: |
| 255 | msg[4] = write_byte; |
| 256 | msg_len++; |
| 257 | dp_msg_len += 2; |
| 258 | break; |
| 259 | case MODE_I2C_READ: |
| 260 | dp_msg_len += 1; |
| 261 | break; |
| 262 | default: |
| 263 | break; |
| 264 | } |
| 265 | |
| 266 | msg[3] = (dp_msg_len) << 4; |
| 267 | ret = radeon_process_aux_ch(auxch, msg, msg_len, reply, reply_bytes, 0); |
| 268 | |
| 269 | if (ret) { |
| 270 | if (read_byte) |
| 271 | *read_byte = reply[0]; |
| 272 | return reply_bytes; |
| 273 | } |
| 274 | return -EREMOTEIO; |
| 275 | } |