mirror of https://gitee.com/openkylin/linux.git
drm/radeon/dp: switch to the common i2c over aux code
Provides a nice cleanup in radeon. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Alex Deucher
Christian König
parent
732d50b431
commit
379dfc25e2
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@ -207,98 +207,15 @@ radeon_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *msg)
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void radeon_dp_aux_init(struct radeon_connector *radeon_connector)
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{
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struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
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dig_connector->dp_i2c_bus->aux.dev = radeon_connector->base.kdev;
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dig_connector->dp_i2c_bus->aux.transfer = radeon_dp_aux_transfer;
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}
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int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
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u8 write_byte, u8 *read_byte)
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{
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struct i2c_algo_dp_aux_data *algo_data = adapter->algo_data;
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struct radeon_i2c_chan *auxch = i2c_get_adapdata(adapter);
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u16 address = algo_data->address;
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u8 msg[5];
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u8 reply[2];
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unsigned retry;
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int msg_bytes;
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int reply_bytes = 1;
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int ret;
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u8 ack;
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/* Set up the address */
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msg[0] = address;
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msg[1] = address >> 8;
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radeon_connector->ddc_bus->aux.dev = radeon_connector->base.kdev;
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radeon_connector->ddc_bus->aux.transfer = radeon_dp_aux_transfer;
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ret = drm_dp_aux_register_i2c_bus(&radeon_connector->ddc_bus->aux);
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if (!ret)
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radeon_connector->ddc_bus->has_aux = true;
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/* Set up the command byte */
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if (mode & MODE_I2C_READ) {
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msg[2] = DP_AUX_I2C_READ << 4;
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msg_bytes = 4;
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msg[3] = msg_bytes << 4;
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} else {
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msg[2] = DP_AUX_I2C_WRITE << 4;
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msg_bytes = 5;
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msg[3] = msg_bytes << 4;
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msg[4] = write_byte;
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}
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/* special handling for start/stop */
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if (mode & (MODE_I2C_START | MODE_I2C_STOP))
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msg[3] = 3 << 4;
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/* Set MOT bit for all but stop */
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if ((mode & MODE_I2C_STOP) == 0)
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msg[2] |= DP_AUX_I2C_MOT << 4;
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for (retry = 0; retry < 7; retry++) {
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ret = radeon_process_aux_ch(auxch,
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msg, msg_bytes, reply, reply_bytes, 0, &ack);
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if (ret == -EBUSY)
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continue;
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else if (ret < 0) {
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DRM_DEBUG_KMS("aux_ch failed %d\n", ret);
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return ret;
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}
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switch ((ack >> 4) & DP_AUX_NATIVE_REPLY_MASK) {
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case DP_AUX_NATIVE_REPLY_ACK:
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/* I2C-over-AUX Reply field is only valid
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* when paired with AUX ACK.
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*/
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break;
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case DP_AUX_NATIVE_REPLY_NACK:
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DRM_DEBUG_KMS("aux_ch native nack\n");
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return -EREMOTEIO;
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case DP_AUX_NATIVE_REPLY_DEFER:
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DRM_DEBUG_KMS("aux_ch native defer\n");
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usleep_range(500, 600);
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continue;
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default:
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DRM_ERROR("aux_ch invalid native reply 0x%02x\n", ack);
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return -EREMOTEIO;
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}
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switch ((ack >> 4) & DP_AUX_I2C_REPLY_MASK) {
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case DP_AUX_I2C_REPLY_ACK:
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if (mode == MODE_I2C_READ)
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*read_byte = reply[0];
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return ret;
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case DP_AUX_I2C_REPLY_NACK:
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DRM_DEBUG_KMS("aux_i2c nack\n");
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return -EREMOTEIO;
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case DP_AUX_I2C_REPLY_DEFER:
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DRM_DEBUG_KMS("aux_i2c defer\n");
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usleep_range(400, 500);
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break;
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default:
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DRM_ERROR("aux_i2c invalid reply 0x%02x\n", ack);
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return -EREMOTEIO;
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}
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}
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DRM_DEBUG_KMS("aux i2c too many retries, giving up\n");
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return -EREMOTEIO;
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WARN(ret, "drm_dp_aux_register_i2c_bus() failed with error %d\n", ret);
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}
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/***** general DP utility functions *****/
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@ -433,12 +350,11 @@ static u8 radeon_dp_encoder_service(struct radeon_device *rdev,
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u8 radeon_dp_getsinktype(struct radeon_connector *radeon_connector)
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{
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struct radeon_connector_atom_dig *dig_connector = radeon_connector->con_priv;
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struct drm_device *dev = radeon_connector->base.dev;
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struct radeon_device *rdev = dev->dev_private;
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return radeon_dp_encoder_service(rdev, ATOM_DP_ACTION_GET_SINK_TYPE, 0,
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dig_connector->dp_i2c_bus->rec.i2c_id, 0);
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radeon_connector->ddc_bus->rec.i2c_id, 0);
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}
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static void radeon_dp_probe_oui(struct radeon_connector *radeon_connector)
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@ -449,11 +365,11 @@ static void radeon_dp_probe_oui(struct radeon_connector *radeon_connector)
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if (!(dig_connector->dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT))
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return;
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if (drm_dp_dpcd_read(&dig_connector->dp_i2c_bus->aux, DP_SINK_OUI, buf, 3))
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if (drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, DP_SINK_OUI, buf, 3))
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DRM_DEBUG_KMS("Sink OUI: %02hx%02hx%02hx\n",
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buf[0], buf[1], buf[2]);
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if (drm_dp_dpcd_read(&dig_connector->dp_i2c_bus->aux, DP_BRANCH_OUI, buf, 3))
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if (drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, DP_BRANCH_OUI, buf, 3))
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DRM_DEBUG_KMS("Branch OUI: %02hx%02hx%02hx\n",
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buf[0], buf[1], buf[2]);
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}
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@ -464,7 +380,7 @@ bool radeon_dp_getdpcd(struct radeon_connector *radeon_connector)
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u8 msg[DP_DPCD_SIZE];
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int ret, i;
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ret = drm_dp_dpcd_read(&dig_connector->dp_i2c_bus->aux, DP_DPCD_REV, msg,
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ret = drm_dp_dpcd_read(&radeon_connector->ddc_bus->aux, DP_DPCD_REV, msg,
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DP_DPCD_SIZE);
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if (ret > 0) {
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memcpy(dig_connector->dpcd, msg, DP_DPCD_SIZE);
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@ -502,7 +418,7 @@ int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
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if (dp_bridge != ENCODER_OBJECT_ID_NONE) {
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/* DP bridge chips */
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drm_dp_dpcd_readb(&dig_connector->dp_i2c_bus->aux,
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drm_dp_dpcd_readb(&radeon_connector->ddc_bus->aux,
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DP_EDP_CONFIGURATION_CAP, &tmp);
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if (tmp & 1)
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panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
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@ -513,7 +429,7 @@ int radeon_dp_get_panel_mode(struct drm_encoder *encoder,
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panel_mode = DP_PANEL_MODE_EXTERNAL_DP_MODE;
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} else if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
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/* eDP */
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drm_dp_dpcd_readb(&dig_connector->dp_i2c_bus->aux,
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drm_dp_dpcd_readb(&radeon_connector->ddc_bus->aux,
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DP_EDP_CONFIGURATION_CAP, &tmp);
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if (tmp & 1)
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panel_mode = DP_PANEL_MODE_INTERNAL_DP2_MODE;
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@ -567,7 +483,8 @@ bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector)
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u8 link_status[DP_LINK_STATUS_SIZE];
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struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
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if (drm_dp_dpcd_read_link_status(&dig->dp_i2c_bus->aux, link_status) <= 0)
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if (drm_dp_dpcd_read_link_status(&radeon_connector->ddc_bus->aux, link_status)
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<= 0)
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return false;
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if (drm_dp_channel_eq_ok(link_status, dig->dp_lane_count))
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return false;
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@ -587,7 +504,7 @@ void radeon_dp_set_rx_power_state(struct drm_connector *connector,
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/* power up/down the sink */
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if (dig_connector->dpcd[0] >= 0x11) {
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drm_dp_dpcd_writeb(&dig_connector->dp_i2c_bus->aux,
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drm_dp_dpcd_writeb(&radeon_connector->ddc_bus->aux,
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DP_SET_POWER, power_state);
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usleep_range(1000, 2000);
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}
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@ -891,7 +808,7 @@ void radeon_dp_link_train(struct drm_encoder *encoder,
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else
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dp_info.enc_id |= ATOM_DP_CONFIG_LINK_A;
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drm_dp_dpcd_readb(&dig_connector->dp_i2c_bus->aux, DP_MAX_LANE_COUNT, &tmp);
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drm_dp_dpcd_readb(&radeon_connector->ddc_bus->aux, DP_MAX_LANE_COUNT, &tmp);
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if (ASIC_IS_DCE5(rdev) && (tmp & DP_TPS3_SUPPORTED))
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dp_info.tp3_supported = true;
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else
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@ -903,7 +820,7 @@ void radeon_dp_link_train(struct drm_encoder *encoder,
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dp_info.connector = connector;
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dp_info.dp_lane_count = dig_connector->dp_lane_count;
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dp_info.dp_clock = dig_connector->dp_clock;
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dp_info.aux = &dig_connector->dp_i2c_bus->aux;
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dp_info.aux = &radeon_connector->ddc_bus->aux;
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if (radeon_dp_link_train_init(&dp_info))
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goto done;
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@ -1261,21 +1261,6 @@ static const struct drm_connector_funcs radeon_dvi_connector_funcs = {
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.force = radeon_dvi_force,
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};
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static void radeon_dp_connector_destroy(struct drm_connector *connector)
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{
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struct radeon_connector *radeon_connector = to_radeon_connector(connector);
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struct radeon_connector_atom_dig *radeon_dig_connector = radeon_connector->con_priv;
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if (radeon_connector->edid)
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kfree(radeon_connector->edid);
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if (radeon_dig_connector->dp_i2c_bus)
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radeon_i2c_destroy(radeon_dig_connector->dp_i2c_bus);
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kfree(radeon_connector->con_priv);
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drm_sysfs_connector_remove(connector);
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drm_connector_cleanup(connector);
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kfree(connector);
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}
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static int radeon_dp_get_modes(struct drm_connector *connector)
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{
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struct radeon_connector *radeon_connector = to_radeon_connector(connector);
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@ -1553,7 +1538,7 @@ static const struct drm_connector_funcs radeon_dp_connector_funcs = {
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.detect = radeon_dp_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.set_property = radeon_connector_set_property,
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.destroy = radeon_dp_connector_destroy,
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.destroy = radeon_connector_destroy,
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.force = radeon_dvi_force,
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};
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@ -1562,7 +1547,7 @@ static const struct drm_connector_funcs radeon_edp_connector_funcs = {
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.detect = radeon_dp_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.set_property = radeon_lvds_set_property,
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.destroy = radeon_dp_connector_destroy,
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.destroy = radeon_connector_destroy,
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.force = radeon_dvi_force,
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};
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@ -1571,7 +1556,7 @@ static const struct drm_connector_funcs radeon_lvds_bridge_connector_funcs = {
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.detect = radeon_dp_detect,
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.fill_modes = drm_helper_probe_single_connector_modes,
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.set_property = radeon_lvds_set_property,
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.destroy = radeon_dp_connector_destroy,
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.destroy = radeon_connector_destroy,
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.force = radeon_dvi_force,
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};
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@ -1668,17 +1653,10 @@ radeon_add_atom_connector(struct drm_device *dev,
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radeon_dig_connector->igp_lane_info = igp_lane_info;
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radeon_connector->con_priv = radeon_dig_connector;
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if (i2c_bus->valid) {
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/* add DP i2c bus */
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if (connector_type == DRM_MODE_CONNECTOR_eDP)
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radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "eDP-auxch");
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else
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radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "DP-auxch");
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if (radeon_dig_connector->dp_i2c_bus)
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radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
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if (radeon_connector->ddc_bus)
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has_aux = true;
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else
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DRM_ERROR("DP: Failed to assign dp ddc bus! Check dmesg for i2c errors.\n");
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radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
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if (!radeon_connector->ddc_bus)
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DRM_ERROR("DP: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
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}
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switch (connector_type) {
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@ -1893,10 +1871,6 @@ radeon_add_atom_connector(struct drm_device *dev,
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drm_connector_init(dev, &radeon_connector->base, &radeon_dp_connector_funcs, connector_type);
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drm_connector_helper_add(&radeon_connector->base, &radeon_dp_connector_helper_funcs);
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if (i2c_bus->valid) {
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/* add DP i2c bus */
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radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "DP-auxch");
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if (!radeon_dig_connector->dp_i2c_bus)
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DRM_ERROR("DP: Failed to assign dp ddc bus! Check dmesg for i2c errors.\n");
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radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
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if (radeon_connector->ddc_bus)
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has_aux = true;
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@ -1942,14 +1916,10 @@ radeon_add_atom_connector(struct drm_device *dev,
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drm_connector_init(dev, &radeon_connector->base, &radeon_edp_connector_funcs, connector_type);
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drm_connector_helper_add(&radeon_connector->base, &radeon_dp_connector_helper_funcs);
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if (i2c_bus->valid) {
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/* add DP i2c bus */
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radeon_dig_connector->dp_i2c_bus = radeon_i2c_create_dp(dev, i2c_bus, "eDP-auxch");
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if (radeon_dig_connector->dp_i2c_bus)
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radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
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if (radeon_connector->ddc_bus)
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has_aux = true;
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else
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DRM_ERROR("DP: Failed to assign dp ddc bus! Check dmesg for i2c errors.\n");
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radeon_connector->ddc_bus = radeon_i2c_lookup(rdev, i2c_bus);
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if (!radeon_connector->ddc_bus)
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DRM_ERROR("DP: Failed to assign ddc bus! Check dmesg for i2c errors.\n");
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}
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drm_object_attach_property(&radeon_connector->base.base,
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@ -759,19 +759,18 @@ int radeon_ddc_get_modes(struct radeon_connector *radeon_connector)
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if (radeon_connector_encoder_get_dp_bridge_encoder_id(&radeon_connector->base) !=
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ENCODER_OBJECT_ID_NONE) {
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struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
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if (dig->dp_i2c_bus)
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if (radeon_connector->ddc_bus->has_aux)
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radeon_connector->edid = drm_get_edid(&radeon_connector->base,
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&dig->dp_i2c_bus->adapter);
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&radeon_connector->ddc_bus->aux.ddc);
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} else if ((radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_DisplayPort) ||
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(radeon_connector->base.connector_type == DRM_MODE_CONNECTOR_eDP)) {
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struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
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if ((dig->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT ||
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dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) && dig->dp_i2c_bus)
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dig->dp_sink_type == CONNECTOR_OBJECT_ID_eDP) &&
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radeon_connector->ddc_bus->has_aux)
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radeon_connector->edid = drm_get_edid(&radeon_connector->base,
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&dig->dp_i2c_bus->adapter);
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&radeon_connector->ddc_bus->aux.ddc);
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else if (radeon_connector->ddc_bus && !radeon_connector->edid)
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radeon_connector->edid = drm_get_edid(&radeon_connector->base,
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&radeon_connector->ddc_bus->adapter);
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@ -64,8 +64,7 @@ bool radeon_ddc_probe(struct radeon_connector *radeon_connector, bool use_aux)
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radeon_router_select_ddc_port(radeon_connector);
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if (use_aux) {
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struct radeon_connector_atom_dig *dig = radeon_connector->con_priv;
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ret = i2c_transfer(&dig->dp_i2c_bus->adapter, msgs, 2);
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ret = i2c_transfer(&radeon_connector->ddc_bus->aux.ddc, msgs, 2);
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} else {
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ret = i2c_transfer(&radeon_connector->ddc_bus->adapter, msgs, 2);
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}
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@ -950,16 +949,16 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
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/* set the radeon bit adapter */
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snprintf(i2c->adapter.name, sizeof(i2c->adapter.name),
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"Radeon i2c bit bus %s", name);
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i2c->adapter.algo_data = &i2c->algo.bit;
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i2c->algo.bit.pre_xfer = pre_xfer;
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i2c->algo.bit.post_xfer = post_xfer;
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i2c->algo.bit.setsda = set_data;
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i2c->algo.bit.setscl = set_clock;
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i2c->algo.bit.getsda = get_data;
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i2c->algo.bit.getscl = get_clock;
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i2c->algo.bit.udelay = 10;
|
||||
i2c->algo.bit.timeout = usecs_to_jiffies(2200); /* from VESA */
|
||||
i2c->algo.bit.data = i2c;
|
||||
i2c->adapter.algo_data = &i2c->bit;
|
||||
i2c->bit.pre_xfer = pre_xfer;
|
||||
i2c->bit.post_xfer = post_xfer;
|
||||
i2c->bit.setsda = set_data;
|
||||
i2c->bit.setscl = set_clock;
|
||||
i2c->bit.getsda = get_data;
|
||||
i2c->bit.getscl = get_clock;
|
||||
i2c->bit.udelay = 10;
|
||||
i2c->bit.timeout = usecs_to_jiffies(2200); /* from VESA */
|
||||
i2c->bit.data = i2c;
|
||||
ret = i2c_bit_add_bus(&i2c->adapter);
|
||||
if (ret) {
|
||||
DRM_ERROR("Failed to register bit i2c %s\n", name);
|
||||
|
|
@ -974,46 +973,13 @@ struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
|
|||
|
||||
}
|
||||
|
||||
struct radeon_i2c_chan *radeon_i2c_create_dp(struct drm_device *dev,
|
||||
struct radeon_i2c_bus_rec *rec,
|
||||
const char *name)
|
||||
{
|
||||
struct radeon_i2c_chan *i2c;
|
||||
int ret;
|
||||
|
||||
i2c = kzalloc(sizeof(struct radeon_i2c_chan), GFP_KERNEL);
|
||||
if (i2c == NULL)
|
||||
return NULL;
|
||||
|
||||
i2c->rec = *rec;
|
||||
i2c->adapter.owner = THIS_MODULE;
|
||||
i2c->adapter.class = I2C_CLASS_DDC;
|
||||
i2c->adapter.dev.parent = &dev->pdev->dev;
|
||||
i2c->dev = dev;
|
||||
snprintf(i2c->adapter.name, sizeof(i2c->adapter.name),
|
||||
"Radeon aux bus %s", name);
|
||||
i2c_set_adapdata(&i2c->adapter, i2c);
|
||||
i2c->adapter.algo_data = &i2c->algo.dp;
|
||||
i2c->algo.dp.aux_ch = radeon_dp_i2c_aux_ch;
|
||||
i2c->algo.dp.address = 0;
|
||||
ret = i2c_dp_aux_add_bus(&i2c->adapter);
|
||||
if (ret) {
|
||||
DRM_INFO("Failed to register i2c %s\n", name);
|
||||
goto out_free;
|
||||
}
|
||||
|
||||
return i2c;
|
||||
out_free:
|
||||
kfree(i2c);
|
||||
return NULL;
|
||||
|
||||
}
|
||||
|
||||
void radeon_i2c_destroy(struct radeon_i2c_chan *i2c)
|
||||
{
|
||||
if (!i2c)
|
||||
return;
|
||||
i2c_del_adapter(&i2c->adapter);
|
||||
if (i2c->has_aux)
|
||||
drm_dp_aux_unregister_i2c_bus(&i2c->aux);
|
||||
kfree(i2c);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -187,12 +187,10 @@ struct radeon_pll {
|
|||
struct radeon_i2c_chan {
|
||||
struct i2c_adapter adapter;
|
||||
struct drm_device *dev;
|
||||
union {
|
||||
struct i2c_algo_bit_data bit;
|
||||
struct i2c_algo_dp_aux_data dp;
|
||||
} algo;
|
||||
struct i2c_algo_bit_data bit;
|
||||
struct radeon_i2c_bus_rec rec;
|
||||
struct drm_dp_aux aux;
|
||||
bool has_aux;
|
||||
};
|
||||
|
||||
/* mostly for macs, but really any system without connector tables */
|
||||
|
|
@ -440,7 +438,6 @@ struct radeon_encoder {
|
|||
struct radeon_connector_atom_dig {
|
||||
uint32_t igp_lane_info;
|
||||
/* displayport */
|
||||
struct radeon_i2c_chan *dp_i2c_bus;
|
||||
u8 dpcd[DP_RECEIVER_CAP_SIZE];
|
||||
u8 dp_sink_type;
|
||||
int dp_clock;
|
||||
|
|
@ -702,8 +699,6 @@ extern void atombios_dig_transmitter_setup(struct drm_encoder *encoder,
|
|||
uint8_t lane_set);
|
||||
extern void radeon_atom_ext_encoder_setup_ddc(struct drm_encoder *encoder);
|
||||
extern struct drm_encoder *radeon_get_external_encoder(struct drm_encoder *encoder);
|
||||
extern int radeon_dp_i2c_aux_ch(struct i2c_adapter *adapter, int mode,
|
||||
u8 write_byte, u8 *read_byte);
|
||||
void radeon_atom_copy_swap(u8 *dst, u8 *src, u8 num_bytes, bool to_le);
|
||||
|
||||
extern void radeon_i2c_init(struct radeon_device *rdev);
|
||||
|
|
@ -715,9 +710,6 @@ extern void radeon_i2c_add(struct radeon_device *rdev,
|
|||
const char *name);
|
||||
extern struct radeon_i2c_chan *radeon_i2c_lookup(struct radeon_device *rdev,
|
||||
struct radeon_i2c_bus_rec *i2c_bus);
|
||||
extern struct radeon_i2c_chan *radeon_i2c_create_dp(struct drm_device *dev,
|
||||
struct radeon_i2c_bus_rec *rec,
|
||||
const char *name);
|
||||
extern struct radeon_i2c_chan *radeon_i2c_create(struct drm_device *dev,
|
||||
struct radeon_i2c_bus_rec *rec,
|
||||
const char *name);
|
||||
|
|
|
|||
Loading…
Reference in New Issue