diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_dp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_dp.c | 633 |
1 files changed, 44 insertions, 589 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dp.c b/drivers/gpu/drm/nouveau/nouveau_dp.c index 4562f309ae3..5675ffc175a 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dp.c +++ b/drivers/gpu/drm/nouveau/nouveau_dp.c @@ -22,618 +22,73 @@ * Authors: Ben Skeggs */ -#include "drmP.h" +#include <drm/drmP.h> +#include <drm/drm_dp_helper.h> -#include "nouveau_drv.h" -#include "nouveau_i2c.h" +#include "nouveau_drm.h" #include "nouveau_connector.h" #include "nouveau_encoder.h" +#include "nouveau_crtc.h" -static int -auxch_rd(struct drm_encoder *encoder, int address, uint8_t *buf, int size) -{ - struct drm_device *dev = encoder->dev; - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - struct nouveau_i2c_chan *auxch; - int ret; - - auxch = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index); - if (!auxch) - return -ENODEV; +#include <core/class.h> - ret = nouveau_dp_auxch(auxch, 9, address, buf, size); - if (ret) - return ret; - - return 0; -} +#include <subdev/gpio.h> +#include <subdev/i2c.h> -static int -auxch_wr(struct drm_encoder *encoder, int address, uint8_t *buf, int size) +static void +nouveau_dp_probe_oui(struct drm_device *dev, struct nouveau_i2c_port *auxch, + u8 *dpcd) { - struct drm_device *dev = encoder->dev; - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - struct nouveau_i2c_chan *auxch; - int ret; + struct nouveau_drm *drm = nouveau_drm(dev); + u8 buf[3]; - auxch = nouveau_i2c_find(dev, nv_encoder->dcb->i2c_index); - if (!auxch) - return -ENODEV; + if (!(dpcd[DP_DOWN_STREAM_PORT_COUNT] & DP_OUI_SUPPORT)) + return; - ret = nouveau_dp_auxch(auxch, 8, address, buf, size); - return ret; -} + if (!nv_rdaux(auxch, DP_SINK_OUI, buf, 3)) + NV_DEBUG(drm, "Sink OUI: %02hx%02hx%02hx\n", + buf[0], buf[1], buf[2]); -static int -nouveau_dp_lane_count_set(struct drm_encoder *encoder, uint8_t cmd) -{ - struct drm_device *dev = encoder->dev; - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - uint32_t tmp; - int or = nv_encoder->or, link = !(nv_encoder->dcb->sorconf.link & 1); + if (!nv_rdaux(auxch, DP_BRANCH_OUI, buf, 3)) + NV_DEBUG(drm, "Branch OUI: %02hx%02hx%02hx\n", + buf[0], buf[1], buf[2]); - tmp = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link)); - tmp &= ~(NV50_SOR_DP_CTRL_ENHANCED_FRAME_ENABLED | - NV50_SOR_DP_CTRL_LANE_MASK); - tmp |= ((1 << (cmd & DP_LANE_COUNT_MASK)) - 1) << 16; - if (cmd & DP_LANE_COUNT_ENHANCED_FRAME_EN) - tmp |= NV50_SOR_DP_CTRL_ENHANCED_FRAME_ENABLED; - nv_wr32(dev, NV50_SOR_DP_CTRL(or, link), tmp); - - return auxch_wr(encoder, DP_LANE_COUNT_SET, &cmd, 1); } -static int -nouveau_dp_link_bw_set(struct drm_encoder *encoder, uint8_t cmd) -{ - struct drm_device *dev = encoder->dev; - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - uint32_t tmp; - int reg = 0x614300 + (nv_encoder->or * 0x800); - - tmp = nv_rd32(dev, reg); - tmp &= 0xfff3ffff; - if (cmd == DP_LINK_BW_2_7) - tmp |= 0x00040000; - nv_wr32(dev, reg, tmp); - - return auxch_wr(encoder, DP_LINK_BW_SET, &cmd, 1); -} - -static int -nouveau_dp_link_train_set(struct drm_encoder *encoder, int pattern) +int +nouveau_dp_detect(struct nouveau_encoder *nv_encoder) { - struct drm_device *dev = encoder->dev; - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - uint32_t tmp; - uint8_t cmd; - int or = nv_encoder->or, link = !(nv_encoder->dcb->sorconf.link & 1); + struct drm_device *dev = nv_encoder->base.base.dev; + struct nouveau_drm *drm = nouveau_drm(dev); + struct nouveau_i2c_port *auxch; + u8 *dpcd = nv_encoder->dp.dpcd; int ret; - tmp = nv_rd32(dev, NV50_SOR_DP_CTRL(or, link)); - tmp &= ~NV50_SOR_DP_CTRL_TRAINING_PATTERN; - tmp |= (pattern << 24); - nv_wr32(dev, NV50_SOR_DP_CTRL(or, link), tmp); + auxch = nv_encoder->i2c; + if (!auxch) + return -ENODEV; - ret = auxch_rd(encoder, DP_TRAINING_PATTERN_SET, &cmd, 1); + ret = nv_rdaux(auxch, DP_DPCD_REV, dpcd, 8); if (ret) return ret; - cmd &= ~DP_TRAINING_PATTERN_MASK; - cmd |= (pattern & DP_TRAINING_PATTERN_MASK); - return auxch_wr(encoder, DP_TRAINING_PATTERN_SET, &cmd, 1); -} - -static int -nouveau_dp_max_voltage_swing(struct drm_encoder *encoder) -{ - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - struct drm_device *dev = encoder->dev; - struct bit_displayport_encoder_table_entry *dpse; - struct bit_displayport_encoder_table *dpe; - int i, dpe_headerlen, max_vs = 0; - - dpe = nouveau_bios_dp_table(dev, nv_encoder->dcb, &dpe_headerlen); - if (!dpe) - return false; - dpse = (void *)((char *)dpe + dpe_headerlen); - - for (i = 0; i < dpe_headerlen; i++, dpse++) { - if (dpse->vs_level > max_vs) - max_vs = dpse->vs_level; - } - - return max_vs; -} - -static int -nouveau_dp_max_pre_emphasis(struct drm_encoder *encoder, int vs) -{ - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - struct drm_device *dev = encoder->dev; - struct bit_displayport_encoder_table_entry *dpse; - struct bit_displayport_encoder_table *dpe; - int i, dpe_headerlen, max_pre = 0; - - dpe = nouveau_bios_dp_table(dev, nv_encoder->dcb, &dpe_headerlen); - if (!dpe) - return false; - dpse = (void *)((char *)dpe + dpe_headerlen); - - for (i = 0; i < dpe_headerlen; i++, dpse++) { - if (dpse->vs_level != vs) - continue; - - if (dpse->pre_level > max_pre) - max_pre = dpse->pre_level; - } - - return max_pre; -} - -static bool -nouveau_dp_link_train_adjust(struct drm_encoder *encoder, uint8_t *config) -{ - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - struct drm_device *dev = encoder->dev; - struct bit_displayport_encoder_table_entry *dpse; - struct bit_displayport_encoder_table *dpe; - int ret, i, dpe_headerlen, vs = 0, pre = 0; - uint8_t request[2]; - - dpe = nouveau_bios_dp_table(dev, nv_encoder->dcb, &dpe_headerlen); - if (!dpe) - return false; - dpse = (void *)((char *)dpe + dpe_headerlen); - - ret = auxch_rd(encoder, DP_ADJUST_REQUEST_LANE0_1, request, 2); - if (ret) - return false; - - NV_DEBUG_KMS(dev, "\t\tadjust 0x%02x 0x%02x\n", request[0], request[1]); - - /* Keep all lanes at the same level.. */ - for (i = 0; i < nv_encoder->dp.link_nr; i++) { - int lane_req = (request[i >> 1] >> ((i & 1) << 2)) & 0xf; - int lane_vs = lane_req & 3; - int lane_pre = (lane_req >> 2) & 3; - - if (lane_vs > vs) - vs = lane_vs; - if (lane_pre > pre) - pre = lane_pre; - } - - if (vs >= nouveau_dp_max_voltage_swing(encoder)) { - vs = nouveau_dp_max_voltage_swing(encoder); - vs |= 4; - } - - if (pre >= nouveau_dp_max_pre_emphasis(encoder, vs & 3)) { - pre = nouveau_dp_max_pre_emphasis(encoder, vs & 3); - pre |= 4; - } - - /* Update the configuration for all lanes.. */ - for (i = 0; i < nv_encoder->dp.link_nr; i++) - config[i] = (pre << 3) | vs; - - return true; -} - -static bool -nouveau_dp_link_train_commit(struct drm_encoder *encoder, uint8_t *config) -{ - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - struct drm_device *dev = encoder->dev; - struct bit_displayport_encoder_table_entry *dpse; - struct bit_displayport_encoder_table *dpe; - int or = nv_encoder->or, link = !(nv_encoder->dcb->sorconf.link & 1); - int dpe_headerlen, ret, i; - - NV_DEBUG_KMS(dev, "\t\tconfig 0x%02x 0x%02x 0x%02x 0x%02x\n", - config[0], config[1], config[2], config[3]); - - dpe = nouveau_bios_dp_table(dev, nv_encoder->dcb, &dpe_headerlen); - if (!dpe) - return false; - dpse = (void *)((char *)dpe + dpe_headerlen); - - for (i = 0; i < dpe->record_nr; i++, dpse++) { - if (dpse->vs_level == (config[0] & 3) && - dpse->pre_level == ((config[0] >> 3) & 3)) - break; - } - BUG_ON(i == dpe->record_nr); - - for (i = 0; i < nv_encoder->dp.link_nr; i++) { - const int shift[4] = { 16, 8, 0, 24 }; - uint32_t mask = 0xff << shift[i]; - uint32_t reg0, reg1, reg2; - - reg0 = nv_rd32(dev, NV50_SOR_DP_UNK118(or, link)) & ~mask; - reg0 |= (dpse->reg0 << shift[i]); - reg1 = nv_rd32(dev, NV50_SOR_DP_UNK120(or, link)) & ~mask; - reg1 |= (dpse->reg1 << shift[i]); - reg2 = nv_rd32(dev, NV50_SOR_DP_UNK130(or, link)) & 0xffff00ff; - reg2 |= (dpse->reg2 << 8); - nv_wr32(dev, NV50_SOR_DP_UNK118(or, link), reg0); - nv_wr32(dev, NV50_SOR_DP_UNK120(or, link), reg1); - nv_wr32(dev, NV50_SOR_DP_UNK130(or, link), reg2); - } - - ret = auxch_wr(encoder, DP_TRAINING_LANE0_SET, config, 4); - if (ret) - return false; - - return true; -} - -bool -nouveau_dp_link_train(struct drm_encoder *encoder) -{ - struct drm_device *dev = encoder->dev; - struct drm_nouveau_private *dev_priv = dev->dev_private; - struct nouveau_gpio_engine *pgpio = &dev_priv->engine.gpio; - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - struct nouveau_connector *nv_connector; - struct bit_displayport_encoder_table *dpe; - int dpe_headerlen; - uint8_t config[4], status[3]; - bool cr_done, cr_max_vs, eq_done; - int ret = 0, i, tries, voltage; - - NV_DEBUG_KMS(dev, "link training!!\n"); - - nv_connector = nouveau_encoder_connector_get(nv_encoder); - if (!nv_connector) - return false; - - dpe = nouveau_bios_dp_table(dev, nv_encoder->dcb, &dpe_headerlen); - if (!dpe) { - NV_ERROR(dev, "SOR-%d: no DP encoder table!\n", nv_encoder->or); - return false; - } - - /* disable hotplug detect, this flips around on some panels during - * link training. - */ - pgpio->irq_enable(dev, nv_connector->dcb->gpio_tag, false); - - if (dpe->script0) { - NV_DEBUG_KMS(dev, "SOR-%d: running DP script 0\n", nv_encoder->or); - nouveau_bios_run_init_table(dev, le16_to_cpu(dpe->script0), - nv_encoder->dcb); - } - -train: - cr_done = eq_done = false; - - /* set link configuration */ - NV_DEBUG_KMS(dev, "\tbegin train: bw %d, lanes %d\n", - nv_encoder->dp.link_bw, nv_encoder->dp.link_nr); - - ret = nouveau_dp_link_bw_set(encoder, nv_encoder->dp.link_bw); - if (ret) - return false; - - config[0] = nv_encoder->dp.link_nr; - if (nv_encoder->dp.dpcd_version >= 0x11 && - nv_encoder->dp.enhanced_frame) - config[0] |= DP_LANE_COUNT_ENHANCED_FRAME_EN; - - ret = nouveau_dp_lane_count_set(encoder, config[0]); - if (ret) - return false; - - /* clock recovery */ - NV_DEBUG_KMS(dev, "\tbegin cr\n"); - ret = nouveau_dp_link_train_set(encoder, DP_TRAINING_PATTERN_1); - if (ret) - goto stop; - - tries = 0; - voltage = -1; - memset(config, 0x00, sizeof(config)); - for (;;) { - if (!nouveau_dp_link_train_commit(encoder, config)) - break; - - udelay(100); - - ret = auxch_rd(encoder, DP_LANE0_1_STATUS, status, 2); - if (ret) - break; - NV_DEBUG_KMS(dev, "\t\tstatus: 0x%02x 0x%02x\n", - status[0], status[1]); - - cr_done = true; - cr_max_vs = false; - for (i = 0; i < nv_encoder->dp.link_nr; i++) { - int lane = (status[i >> 1] >> ((i & 1) * 4)) & 0xf; - - if (!(lane & DP_LANE_CR_DONE)) { - cr_done = false; - if (config[i] & DP_TRAIN_MAX_PRE_EMPHASIS_REACHED) - cr_max_vs = true; - break; - } - } - - if ((config[0] & DP_TRAIN_VOLTAGE_SWING_MASK) != voltage) { - voltage = config[0] & DP_TRAIN_VOLTAGE_SWING_MASK; - tries = 0; - } - - if (cr_done || cr_max_vs || (++tries == 5)) - break; - - if (!nouveau_dp_link_train_adjust(encoder, config)) - break; - } - - if (!cr_done) - goto stop; - - /* channel equalisation */ - NV_DEBUG_KMS(dev, "\tbegin eq\n"); - ret = nouveau_dp_link_train_set(encoder, DP_TRAINING_PATTERN_2); - if (ret) - goto stop; - - for (tries = 0; tries <= 5; tries++) { - udelay(400); - - ret = auxch_rd(encoder, DP_LANE0_1_STATUS, status, 3); - if (ret) - break; - NV_DEBUG_KMS(dev, "\t\tstatus: 0x%02x 0x%02x\n", - status[0], status[1]); - - eq_done = true; - if (!(status[2] & DP_INTERLANE_ALIGN_DONE)) - eq_done = false; - - for (i = 0; eq_done && i < nv_encoder->dp.link_nr; i++) { - int lane = (status[i >> 1] >> ((i & 1) * 4)) & 0xf; - - if (!(lane & DP_LANE_CR_DONE)) { - cr_done = false; - break; - } - - if (!(lane & DP_LANE_CHANNEL_EQ_DONE) || - !(lane & DP_LANE_SYMBOL_LOCKED)) { - eq_done = false; - break; - } - } - - if (eq_done || !cr_done) - break; - - if (!nouveau_dp_link_train_adjust(encoder, config) || - !nouveau_dp_link_train_commit(encoder, config)) - break; - } - -stop: - /* end link training */ - ret = nouveau_dp_link_train_set(encoder, DP_TRAINING_PATTERN_DISABLE); - if (ret) - return false; - - /* retry at a lower setting, if possible */ - if (!ret && !(eq_done && cr_done)) { - NV_DEBUG_KMS(dev, "\twe failed\n"); - if (nv_encoder->dp.link_bw != DP_LINK_BW_1_62) { - NV_DEBUG_KMS(dev, "retry link training at low rate\n"); - nv_encoder->dp.link_bw = DP_LINK_BW_1_62; - goto train; - } - } - - if (dpe->script1) { - NV_DEBUG_KMS(dev, "SOR-%d: running DP script 1\n", nv_encoder->or); - nouveau_bios_run_init_table(dev, le16_to_cpu(dpe->script1), - nv_encoder->dcb); - } - - /* re-enable hotplug detect */ - pgpio->irq_enable(dev, nv_connector->dcb->gpio_tag, true); - - return eq_done; -} - -bool -nouveau_dp_detect(struct drm_encoder *encoder) -{ - struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder); - struct drm_device *dev = encoder->dev; - uint8_t dpcd[4]; - int ret; - - ret = auxch_rd(encoder, 0x0000, dpcd, 4); - if (ret) - return false; - - NV_DEBUG_KMS(dev, "encoder: link_bw %d, link_nr %d\n" - "display: link_bw %d, link_nr %d version 0x%02x\n", - nv_encoder->dcb->dpconf.link_bw, - nv_encoder->dcb->dpconf.link_nr, - dpcd[1], dpcd[2] & 0x0f, dpcd[0]); - - nv_encoder->dp.dpcd_version = dpcd[0]; - - nv_encoder->dp.link_bw = dpcd[1]; - if (nv_encoder->dp.link_bw != DP_LINK_BW_1_62 && - !nv_encoder->dcb->dpconf.link_bw) - nv_encoder->dp.link_bw = DP_LINK_BW_1_62; + nv_encoder->dp.link_bw = 27000 * dpcd[1]; nv_encoder->dp.link_nr = dpcd[2] & DP_MAX_LANE_COUNT_MASK; - if (nv_encoder->dp.link_nr > nv_encoder->dcb->dpconf.link_nr) - nv_encoder->dp.link_nr = nv_encoder->dcb->dpconf.link_nr; - - nv_encoder->dp.enhanced_frame = (dpcd[2] & DP_ENHANCED_FRAME_CAP); - - return true; -} - -int -nouveau_dp_auxch(struct nouveau_i2c_chan *auxch, int cmd, int addr, - uint8_t *data, int data_nr) -{ - struct drm_device *dev = auxch->dev; - uint32_t tmp, ctrl, stat = 0, data32[4] = {}; - int ret = 0, i, index = auxch->rd; - - NV_DEBUG_KMS(dev, "ch %d cmd %d addr 0x%x len %d\n", index, cmd, addr, data_nr); - - tmp = nv_rd32(dev, NV50_AUXCH_CTRL(auxch->rd)); - nv_wr32(dev, NV50_AUXCH_CTRL(auxch->rd), tmp | 0x00100000); - tmp = nv_rd32(dev, NV50_AUXCH_CTRL(auxch->rd)); - if (!(tmp & 0x01000000)) { - NV_ERROR(dev, "expected bit 24 == 1, got 0x%08x\n", tmp); - ret = -EIO; - goto out; - } - - for (i = 0; i < 3; i++) { - tmp = nv_rd32(dev, NV50_AUXCH_STAT(auxch->rd)); - if (tmp & NV50_AUXCH_STAT_STATE_READY) - break; - udelay(100); - } - - if (i == 3) { - ret = -EBUSY; - goto out; - } - - if (!(cmd & 1)) { - memcpy(data32, data, data_nr); - for (i = 0; i < 4; i++) { - NV_DEBUG_KMS(dev, "wr %d: 0x%08x\n", i, data32[i]); - nv_wr32(dev, NV50_AUXCH_DATA_OUT(index, i), data32[i]); - } - } - - nv_wr32(dev, NV50_AUXCH_ADDR(index), addr); - ctrl = nv_rd32(dev, NV50_AUXCH_CTRL(index)); - ctrl &= ~(NV50_AUXCH_CTRL_CMD | NV50_AUXCH_CTRL_LEN); - ctrl |= (cmd << NV50_AUXCH_CTRL_CMD_SHIFT); - ctrl |= ((data_nr - 1) << NV50_AUXCH_CTRL_LEN_SHIFT); - - for (i = 0; i < 16; i++) { - nv_wr32(dev, NV50_AUXCH_CTRL(index), ctrl | 0x80000000); - nv_wr32(dev, NV50_AUXCH_CTRL(index), ctrl); - nv_wr32(dev, NV50_AUXCH_CTRL(index), ctrl | 0x00010000); - if (!nv_wait(dev, NV50_AUXCH_CTRL(index), - 0x00010000, 0x00000000)) { - NV_ERROR(dev, "expected bit 16 == 0, got 0x%08x\n", - nv_rd32(dev, NV50_AUXCH_CTRL(index))); - ret = -EBUSY; - goto out; - } - - udelay(400); - - stat = nv_rd32(dev, NV50_AUXCH_STAT(index)); - if ((stat & NV50_AUXCH_STAT_REPLY_AUX) != - NV50_AUXCH_STAT_REPLY_AUX_DEFER) - break; - } - - if (i == 16) { - NV_ERROR(dev, "auxch DEFER too many times, bailing\n"); - ret = -EREMOTEIO; - goto out; - } - - if (cmd & 1) { - if ((stat & NV50_AUXCH_STAT_COUNT) != data_nr) { - ret = -EREMOTEIO; - goto out; - } - for (i = 0; i < 4; i++) { - data32[i] = nv_rd32(dev, NV50_AUXCH_DATA_IN(index, i)); - NV_DEBUG_KMS(dev, "rd %d: 0x%08x\n", i, data32[i]); - } - memcpy(data, data32, data_nr); - } + NV_DEBUG(drm, "display: %dx%d dpcd 0x%02x\n", + nv_encoder->dp.link_nr, nv_encoder->dp.link_bw, dpcd[0]); + NV_DEBUG(drm, "encoder: %dx%d\n", + nv_encoder->dcb->dpconf.link_nr, + nv_encoder->dcb->dpconf.link_bw); -out: - tmp = nv_rd32(dev, NV50_AUXCH_CTRL(auxch->rd)); - nv_wr32(dev, NV50_AUXCH_CTRL(auxch->rd), tmp & ~0x00100000); - tmp = nv_rd32(dev, NV50_AUXCH_CTRL(auxch->rd)); - if (tmp & 0x01000000) { - NV_ERROR(dev, "expected bit 24 == 0, got 0x%08x\n", tmp); - ret = -EIO; - } - - udelay(400); - - return ret ? ret : (stat & NV50_AUXCH_STAT_REPLY); -} - -static int -nouveau_dp_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) -{ - struct nouveau_i2c_chan *auxch = (struct nouveau_i2c_chan *)adap; - struct drm_device *dev = auxch->dev; - struct i2c_msg *msg = msgs; - int ret, mcnt = num; - - while (mcnt--) { - u8 remaining = msg->len; - u8 *ptr = msg->buf; - - while (remaining) { - u8 cnt = (remaining > 16) ? 16 : remaining; - u8 cmd; - - if (msg->flags & I2C_M_RD) - cmd = AUX_I2C_READ; - else - cmd = AUX_I2C_WRITE; - - if (mcnt || remaining > 16) - cmd |= AUX_I2C_MOT; - - ret = nouveau_dp_auxch(auxch, cmd, msg->addr, ptr, cnt); - if (ret < 0) - return ret; - - switch (ret & NV50_AUXCH_STAT_REPLY_I2C) { - case NV50_AUXCH_STAT_REPLY_I2C_ACK: - break; - case NV50_AUXCH_STAT_REPLY_I2C_NACK: - return -EREMOTEIO; - case NV50_AUXCH_STAT_REPLY_I2C_DEFER: - udelay(100); - continue; - default: - NV_ERROR(dev, "bad auxch reply: 0x%08x\n", ret); - return -EREMOTEIO; - } - - ptr += cnt; - remaining -= cnt; - } + if (nv_encoder->dcb->dpconf.link_nr < nv_encoder->dp.link_nr) + nv_encoder->dp.link_nr = nv_encoder->dcb->dpconf.link_nr; + if (nv_encoder->dcb->dpconf.link_bw < nv_encoder->dp.link_bw) + nv_encoder->dp.link_bw = nv_encoder->dcb->dpconf.link_bw; - msg++; - } + NV_DEBUG(drm, "maximum: %dx%d\n", + nv_encoder->dp.link_nr, nv_encoder->dp.link_bw); - return num; -} - -static u32 -nouveau_dp_i2c_func(struct i2c_adapter *adap) -{ - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; + nouveau_dp_probe_oui(dev, auxch, dpcd); + return 0; } - -const struct i2c_algorithm nouveau_dp_i2c_algo = { - .master_xfer = nouveau_dp_i2c_xfer, - .functionality = nouveau_dp_i2c_func -}; |