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path: root/drivers/gpu/drm/nouveau/nvkm/engine/disp/outpdp.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/outpdp.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/engine/disp/outpdp.c282
1 files changed, 0 insertions, 282 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/outpdp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/outpdp.c
deleted file mode 100644
index de36f73b14dc..000000000000
--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/outpdp.c
+++ /dev/null
@@ -1,282 +0,0 @@
-/*
- * Copyright 2014 Red Hat Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Authors: Ben Skeggs
- */
-#include "outpdp.h"
-#include "conn.h"
-#include "dport.h"
-#include "priv.h"
-
-#include <subdev/i2c.h>
-
-#include <nvif/event.h>
-
-int
-nvkm_output_dp_train(struct nvkm_output *base, u32 datarate)
-{
- struct nvkm_output_dp *outp = nvkm_output_dp(base);
- bool retrain = true;
- u8 link[2], stat[3];
- u32 linkrate;
- int ret, i;
-
- mutex_lock(&outp->mutex);
-
- /* check that the link is trained at a high enough rate */
- ret = nvkm_rdaux(outp->aux, DPCD_LC00_LINK_BW_SET, link, 2);
- if (ret) {
- OUTP_DBG(&outp->base,
- "failed to read link config, assuming no sink");
- goto done;
- }
-
- linkrate = link[0] * 27000 * (link[1] & DPCD_LC01_LANE_COUNT_SET);
- linkrate = (linkrate * 8) / 10; /* 8B/10B coding overhead */
- datarate = (datarate + 9) / 10; /* -> decakilobits */
- if (linkrate < datarate) {
- OUTP_DBG(&outp->base, "link not trained at sufficient rate");
- goto done;
- }
-
- /* check that link is still trained */
- ret = nvkm_rdaux(outp->aux, DPCD_LS02, stat, 3);
- if (ret) {
- OUTP_DBG(&outp->base,
- "failed to read link status, assuming no sink");
- goto done;
- }
-
- if (stat[2] & DPCD_LS04_INTERLANE_ALIGN_DONE) {
- for (i = 0; i < (link[1] & DPCD_LC01_LANE_COUNT_SET); i++) {
- u8 lane = (stat[i >> 1] >> ((i & 1) * 4)) & 0x0f;
- if (!(lane & DPCD_LS02_LANE0_CR_DONE) ||
- !(lane & DPCD_LS02_LANE0_CHANNEL_EQ_DONE) ||
- !(lane & DPCD_LS02_LANE0_SYMBOL_LOCKED)) {
- OUTP_DBG(&outp->base,
- "lane %d not equalised", lane);
- goto done;
- }
- }
- retrain = false;
- } else {
- OUTP_DBG(&outp->base, "no inter-lane alignment");
- }
-
-done:
- if (retrain || !atomic_read(&outp->lt.done)) {
- /* no sink, but still need to configure source */
- if (outp->dpcd[DPCD_RC00_DPCD_REV] == 0x00) {
- outp->dpcd[DPCD_RC01_MAX_LINK_RATE] =
- outp->base.info.dpconf.link_bw;
- outp->dpcd[DPCD_RC02] =
- outp->base.info.dpconf.link_nr;
- }
- nvkm_dp_train(outp);
- }
-
- mutex_unlock(&outp->mutex);
- return ret;
-}
-
-static void
-nvkm_output_dp_enable(struct nvkm_output_dp *outp, bool enable)
-{
- struct nvkm_i2c_aux *aux = outp->aux;
-
- if (enable) {
- if (!outp->present) {
- OUTP_DBG(&outp->base, "aux power -> always");
- nvkm_i2c_aux_monitor(aux, true);
- outp->present = true;
- }
-
- if (!nvkm_rdaux(aux, DPCD_RC00_DPCD_REV, outp->dpcd,
- sizeof(outp->dpcd))) {
- nvkm_output_dp_train(&outp->base, 0);
- return;
- }
- }
-
- if (outp->present) {
- OUTP_DBG(&outp->base, "aux power -> demand");
- nvkm_i2c_aux_monitor(aux, false);
- outp->present = false;
- }
-
- atomic_set(&outp->lt.done, 0);
-}
-
-static int
-nvkm_output_dp_hpd(struct nvkm_notify *notify)
-{
- const struct nvkm_i2c_ntfy_rep *line = notify->data;
- struct nvkm_output_dp *outp = container_of(notify, typeof(*outp), hpd);
- struct nvkm_connector *conn = outp->base.conn;
- struct nvkm_disp *disp = outp->base.disp;
- struct nvif_notify_conn_rep_v0 rep = {};
-
- OUTP_DBG(&outp->base, "HPD: %d", line->mask);
- nvkm_output_dp_enable(outp, true);
-
- if (line->mask & NVKM_I2C_UNPLUG)
- rep.mask |= NVIF_NOTIFY_CONN_V0_UNPLUG;
- if (line->mask & NVKM_I2C_PLUG)
- rep.mask |= NVIF_NOTIFY_CONN_V0_PLUG;
-
- nvkm_event_send(&disp->hpd, rep.mask, conn->index, &rep, sizeof(rep));
- return NVKM_NOTIFY_KEEP;
-}
-
-static int
-nvkm_output_dp_irq(struct nvkm_notify *notify)
-{
- const struct nvkm_i2c_ntfy_rep *line = notify->data;
- struct nvkm_output_dp *outp = container_of(notify, typeof(*outp), irq);
- struct nvkm_connector *conn = outp->base.conn;
- struct nvkm_disp *disp = outp->base.disp;
- struct nvif_notify_conn_rep_v0 rep = {
- .mask = NVIF_NOTIFY_CONN_V0_IRQ,
- };
-
- OUTP_DBG(&outp->base, "IRQ: %d", line->mask);
- nvkm_output_dp_train(&outp->base, 0);
-
- nvkm_event_send(&disp->hpd, rep.mask, conn->index, &rep, sizeof(rep));
- return NVKM_NOTIFY_KEEP;
-}
-
-static void
-nvkm_output_dp_fini(struct nvkm_output *base)
-{
- struct nvkm_output_dp *outp = nvkm_output_dp(base);
- nvkm_notify_put(&outp->hpd);
- nvkm_notify_put(&outp->irq);
- nvkm_output_dp_enable(outp, false);
-}
-
-static void
-nvkm_output_dp_init(struct nvkm_output *base)
-{
- struct nvkm_output_dp *outp = nvkm_output_dp(base);
- nvkm_notify_put(&outp->base.conn->hpd);
- nvkm_output_dp_enable(outp, true);
- nvkm_notify_get(&outp->irq);
- nvkm_notify_get(&outp->hpd);
-}
-
-static void *
-nvkm_output_dp_dtor(struct nvkm_output *base)
-{
- struct nvkm_output_dp *outp = nvkm_output_dp(base);
- nvkm_notify_fini(&outp->hpd);
- nvkm_notify_fini(&outp->irq);
- return outp;
-}
-
-static const struct nvkm_output_func
-nvkm_output_dp_func = {
- .dtor = nvkm_output_dp_dtor,
- .init = nvkm_output_dp_init,
- .fini = nvkm_output_dp_fini,
-};
-
-int
-nvkm_output_dp_ctor(const struct nvkm_output_dp_func *func,
- struct nvkm_disp *disp, int index, struct dcb_output *dcbE,
- struct nvkm_i2c_aux *aux, struct nvkm_output_dp *outp)
-{
- struct nvkm_device *device = disp->engine.subdev.device;
- struct nvkm_bios *bios = device->bios;
- struct nvkm_i2c *i2c = device->i2c;
- u8 hdr, cnt, len;
- u32 data;
- int ret;
-
- nvkm_output_ctor(&nvkm_output_dp_func, disp, index, dcbE, &outp->base);
- outp->func = func;
- outp->aux = aux;
- if (!outp->aux) {
- OUTP_ERR(&outp->base, "no aux");
- return -ENODEV;
- }
-
- /* bios data is not optional */
- data = nvbios_dpout_match(bios, outp->base.info.hasht,
- outp->base.info.hashm, &outp->version,
- &hdr, &cnt, &len, &outp->info);
- if (!data) {
- OUTP_ERR(&outp->base, "no bios dp data");
- return -ENODEV;
- }
-
- OUTP_DBG(&outp->base, "bios dp %02x %02x %02x %02x",
- outp->version, hdr, cnt, len);
-
- /* link maintenance */
- ret = nvkm_notify_init(NULL, &i2c->event, nvkm_output_dp_irq, true,
- &(struct nvkm_i2c_ntfy_req) {
- .mask = NVKM_I2C_IRQ,
- .port = outp->aux->id,
- },
- sizeof(struct nvkm_i2c_ntfy_req),
- sizeof(struct nvkm_i2c_ntfy_rep),
- &outp->irq);
- if (ret) {
- OUTP_ERR(&outp->base, "error monitoring aux irq: %d", ret);
- return ret;
- }
-
- mutex_init(&outp->mutex);
- atomic_set(&outp->lt.done, 0);
-
- /* hotplug detect, replaces gpio-based mechanism with aux events */
- ret = nvkm_notify_init(NULL, &i2c->event, nvkm_output_dp_hpd, true,
- &(struct nvkm_i2c_ntfy_req) {
- .mask = NVKM_I2C_PLUG | NVKM_I2C_UNPLUG,
- .port = outp->aux->id,
- },
- sizeof(struct nvkm_i2c_ntfy_req),
- sizeof(struct nvkm_i2c_ntfy_rep),
- &outp->hpd);
- if (ret) {
- OUTP_ERR(&outp->base, "error monitoring aux hpd: %d", ret);
- return ret;
- }
-
- return 0;
-}
-
-int
-nvkm_output_dp_new_(const struct nvkm_output_dp_func *func,
- struct nvkm_disp *disp, int index, struct dcb_output *dcbE,
- struct nvkm_output **poutp)
-{
- struct nvkm_i2c *i2c = disp->engine.subdev.device->i2c;
- struct nvkm_i2c_aux *aux = nvkm_i2c_aux_find(i2c, dcbE->i2c_index);
- struct nvkm_output_dp *outp;
-
- if (!(outp = kzalloc(sizeof(*outp), GFP_KERNEL)))
- return -ENOMEM;
- *poutp = &outp->base;
-
- return nvkm_output_dp_ctor(func, disp, index, dcbE, aux, outp);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 14:02:35 +0000