drm: remove symlinks from build, use Kbuild files for lib build

The DRM build used a separate, symlinked, source tree out of a desire
to avoid Kbuild/autotools' object files conflicting.

Not only is this very annoying to maintain, but it's made worse by
having two entirely separate source file lists to maintain too.

Fixes both these issues by ditching automake (it doesn't approve of
the kernel's Kbuild syntax) in favour of custom makefiles that can
build libnvif.so from the Kbuild files.

Like the previous commit, this will never show up in the kernel tree
(it has its own version).

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 0 insertions, 402 deletions

diff --git a/nvkm/engine/disp/dport.c b/nvkm/engine/disp/dport.c
deleted file mode 100644
index 16db08dfb..000000000
--- a/nvkm/engine/disp/dport.c
+++ /dev/null
@@ -1,402 +0,0 @@
-/*
- * Copyright 2013 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 <subdev/bios.h>
-#include <subdev/bios/dcb.h>
-#include <subdev/bios/dp.h>
-#include <subdev/bios/init.h>
-#include <subdev/i2c.h>
-
-#include "nv50.h"
-
-#include <nvif/class.h>
-
-#include "dport.h"
-#include "outpdp.h"
-
-/******************************************************************************
- * link training
- *****************************************************************************/
-struct dp_state {
-	struct nvkm_output_dp *outp;
-	int link_nr;
-	u32 link_bw;
-	u8  stat[6];
-	u8  conf[4];
-	bool pc2;
-	u8  pc2stat;
-	u8  pc2conf[2];
-};
-
-static int
-dp_set_link_config(struct dp_state *dp)
-{
-	struct nvkm_output_dp_impl *impl = (void *)nv_oclass(dp->outp);
-	struct nvkm_output_dp *outp = dp->outp;
-	struct nouveau_disp *disp = nouveau_disp(outp);
-	struct nouveau_bios *bios = nouveau_bios(disp);
-	struct nvbios_init init = {
-		.subdev = nv_subdev(disp),
-		.bios = bios,
-		.offset = 0x0000,
-		.outp = &outp->base.info,
-		.crtc = -1,
-		.execute = 1,
-	};
-	u32 lnkcmp;
-	u8 sink[2];
-	int ret;
-
-	DBG("%d lanes at %d KB/s\n", dp->link_nr, dp->link_bw);
-
-	/* set desired link configuration on the source */
-	if ((lnkcmp = dp->outp->info.lnkcmp)) {
-		if (outp->version < 0x30) {
-			while ((dp->link_bw / 10) < nv_ro16(bios, lnkcmp))
-				lnkcmp += 4;
-			init.offset = nv_ro16(bios, lnkcmp + 2);
-		} else {
-			while ((dp->link_bw / 27000) < nv_ro08(bios, lnkcmp))
-				lnkcmp += 3;
-			init.offset = nv_ro16(bios, lnkcmp + 1);
-		}
-
-		nvbios_exec(&init);
-	}
-
-	ret = impl->lnk_ctl(outp, dp->link_nr, dp->link_bw / 27000,
-			    outp->dpcd[DPCD_RC02] &
-				       DPCD_RC02_ENHANCED_FRAME_CAP);
-	if (ret) {
-		if (ret < 0)
-			ERR("lnk_ctl failed with %d\n", ret);
-		return ret;
-	}
-
-	impl->lnk_pwr(outp, dp->link_nr);
-
-	/* set desired link configuration on the sink */
-	sink[0] = dp->link_bw / 27000;
-	sink[1] = dp->link_nr;
-	if (outp->dpcd[DPCD_RC02] & DPCD_RC02_ENHANCED_FRAME_CAP)
-		sink[1] |= DPCD_LC01_ENHANCED_FRAME_EN;
-
-	return nv_wraux(outp->base.edid, DPCD_LC00_LINK_BW_SET, sink, 2);
-}
-
-static void
-dp_set_training_pattern(struct dp_state *dp, u8 pattern)
-{
-	struct nvkm_output_dp_impl *impl = (void *)nv_oclass(dp->outp);
-	struct nvkm_output_dp *outp = dp->outp;
-	u8 sink_tp;
-
-	DBG("training pattern %d\n", pattern);
-	impl->pattern(outp, pattern);
-
-	nv_rdaux(outp->base.edid, DPCD_LC02, &sink_tp, 1);
-	sink_tp &= ~DPCD_LC02_TRAINING_PATTERN_SET;
-	sink_tp |= pattern;
-	nv_wraux(outp->base.edid, DPCD_LC02, &sink_tp, 1);
-}
-
-static int
-dp_link_train_commit(struct dp_state *dp, bool pc)
-{
-	struct nvkm_output_dp_impl *impl = (void *)nv_oclass(dp->outp);
-	struct nvkm_output_dp *outp = dp->outp;
-	int ret, i;
-
-	for (i = 0; i < dp->link_nr; i++) {
-		u8 lane = (dp->stat[4 + (i >> 1)] >> ((i & 1) * 4)) & 0xf;
-		u8 lpc2 = (dp->pc2stat >> (i * 2)) & 0x3;
-		u8 lpre = (lane & 0x0c) >> 2;
-		u8 lvsw = (lane & 0x03) >> 0;
-		u8 hivs = 3 - lpre;
-		u8 hipe = 3;
-		u8 hipc = 3;
-
-		if (lpc2 >= hipc)
-			lpc2 = hipc | DPCD_LC0F_LANE0_MAX_POST_CURSOR2_REACHED;
-		if (lpre >= hipe) {
-			lpre = hipe | DPCD_LC03_MAX_SWING_REACHED; /* yes. */
-			lvsw = hivs = 3 - (lpre & 3);
-		} else
-		if (lvsw >= hivs) {
-			lvsw = hivs | DPCD_LC03_MAX_SWING_REACHED;
-		}
-
-		dp->conf[i] = (lpre << 3) | lvsw;
-		dp->pc2conf[i >> 1] |= lpc2 << ((i & 1) * 4);
-
-		DBG("config lane %d %02x %02x\n", i, dp->conf[i], lpc2);
-		impl->drv_ctl(outp, i, lvsw & 3, lpre & 3, lpc2 & 3);
-	}
-
-	ret = nv_wraux(outp->base.edid, DPCD_LC03(0), dp->conf, 4);
-	if (ret)
-		return ret;
-
-	if (pc) {
-		ret = nv_wraux(outp->base.edid, DPCD_LC0F, dp->pc2conf, 2);
-		if (ret)
-			return ret;
-	}
-
-	return 0;
-}
-
-static int
-dp_link_train_update(struct dp_state *dp, bool pc, u32 delay)
-{
-	struct nvkm_output_dp *outp = dp->outp;
-	int ret;
-
-	if (outp->dpcd[DPCD_RC0E_AUX_RD_INTERVAL])
-		mdelay(outp->dpcd[DPCD_RC0E_AUX_RD_INTERVAL] * 4);
-	else
-		udelay(delay);
-
-	ret = nv_rdaux(outp->base.edid, DPCD_LS02, dp->stat, 6);
-	if (ret)
-		return ret;
-
-	if (pc) {
-		ret = nv_rdaux(outp->base.edid, DPCD_LS0C, &dp->pc2stat, 1);
-		if (ret)
-			dp->pc2stat = 0x00;
-		DBG("status %6ph pc2 %02x\n", dp->stat, dp->pc2stat);
-	} else {
-		DBG("status %6ph\n", dp->stat);
-	}
-
-	return 0;
-}
-
-static int
-dp_link_train_cr(struct dp_state *dp)
-{
-	bool cr_done = false, abort = false;
-	int voltage = dp->conf[0] & DPCD_LC03_VOLTAGE_SWING_SET;
-	int tries = 0, i;
-
-	dp_set_training_pattern(dp, 1);
-
-	do {
-		if (dp_link_train_commit(dp, false) ||
-		    dp_link_train_update(dp, false, 100))
-			break;
-
-		cr_done = true;
-		for (i = 0; i < dp->link_nr; i++) {
-			u8 lane = (dp->stat[i >> 1] >> ((i & 1) * 4)) & 0xf;
-			if (!(lane & DPCD_LS02_LANE0_CR_DONE)) {
-				cr_done = false;
-				if (dp->conf[i] & DPCD_LC03_MAX_SWING_REACHED)
-					abort = true;
-				break;
-			}
-		}
-
-		if ((dp->conf[0] & DPCD_LC03_VOLTAGE_SWING_SET) != voltage) {
-			voltage = dp->conf[0] & DPCD_LC03_VOLTAGE_SWING_SET;
-			tries = 0;
-		}
-	} while (!cr_done && !abort && ++tries < 5);
-
-	return cr_done ? 0 : -1;
-}
-
-static int
-dp_link_train_eq(struct dp_state *dp)
-{
-	struct nvkm_output_dp *outp = dp->outp;
-	bool eq_done = false, cr_done = true;
-	int tries = 0, i;
-
-	if (outp->dpcd[2] & DPCD_RC02_TPS3_SUPPORTED)
-		dp_set_training_pattern(dp, 3);
-	else
-		dp_set_training_pattern(dp, 2);
-
-	do {
-		if ((tries &&
-		    dp_link_train_commit(dp, dp->pc2)) ||
-		    dp_link_train_update(dp, dp->pc2, 400))
-			break;
-
-		eq_done = !!(dp->stat[2] & DPCD_LS04_INTERLANE_ALIGN_DONE);
-		for (i = 0; i < dp->link_nr && eq_done; i++) {
-			u8 lane = (dp->stat[i >> 1] >> ((i & 1) * 4)) & 0xf;
-			if (!(lane & DPCD_LS02_LANE0_CR_DONE))
-				cr_done = false;
-			if (!(lane & DPCD_LS02_LANE0_CHANNEL_EQ_DONE) ||
-			    !(lane & DPCD_LS02_LANE0_SYMBOL_LOCKED))
-				eq_done = false;
-		}
-	} while (!eq_done && cr_done && ++tries <= 5);
-
-	return eq_done ? 0 : -1;
-}
-
-static void
-dp_link_train_init(struct dp_state *dp, bool spread)
-{
-	struct nvkm_output_dp *outp = dp->outp;
-	struct nouveau_disp *disp = nouveau_disp(outp);
-	struct nouveau_bios *bios = nouveau_bios(disp);
-	struct nvbios_init init = {
-		.subdev = nv_subdev(disp),
-		.bios = bios,
-		.outp = &outp->base.info,
-		.crtc = -1,
-		.execute = 1,
-	};
-
-	/* set desired spread */
-	if (spread)
-		init.offset = outp->info.script[2];
-	else
-		init.offset = outp->info.script[3];
-	nvbios_exec(&init);
-
-	/* pre-train script */
-	init.offset = outp->info.script[0];
-	nvbios_exec(&init);
-}
-
-static void
-dp_link_train_fini(struct dp_state *dp)
-{
-	struct nvkm_output_dp *outp = dp->outp;
-	struct nouveau_disp *disp = nouveau_disp(outp);
-	struct nouveau_bios *bios = nouveau_bios(disp);
-	struct nvbios_init init = {
-		.subdev = nv_subdev(disp),
-		.bios = bios,
-		.outp = &outp->base.info,
-		.crtc = -1,
-		.execute = 1,
-	};
-
-	/* post-train script */
-	init.offset = outp->info.script[1],
-	nvbios_exec(&init);
-}
-
-static const struct dp_rates {
-	u32 rate;
-	u8  bw;
-	u8  nr;
-} nouveau_dp_rates[] = {
-	{ 2160000, 0x14, 4 },
-	{ 1080000, 0x0a, 4 },
-	{ 1080000, 0x14, 2 },
-	{  648000, 0x06, 4 },
-	{  540000, 0x0a, 2 },
-	{  540000, 0x14, 1 },
-	{  324000, 0x06, 2 },
-	{  270000, 0x0a, 1 },
-	{  162000, 0x06, 1 },
-	{}
-};
-
-void
-nouveau_dp_train(struct work_struct *w)
-{
-	struct nvkm_output_dp *outp = container_of(w, typeof(*outp), lt.work);
-	struct nv50_disp_priv *priv = (void *)nouveau_disp(outp);
-	const struct dp_rates *cfg = nouveau_dp_rates;
-	struct dp_state _dp = {
-		.outp = outp,
-	}, *dp = &_dp;
-	u32 datarate = 0;
-	int ret;
-
-	if (!outp->base.info.location && priv->sor.magic)
-		priv->sor.magic(&outp->base);
-
-	/* bring capabilities within encoder limits */
-	if (nv_mclass(priv) < GF110_DISP)
-		outp->dpcd[2] &= ~DPCD_RC02_TPS3_SUPPORTED;
-	if ((outp->dpcd[2] & 0x1f) > outp->base.info.dpconf.link_nr) {
-		outp->dpcd[2] &= ~DPCD_RC02_MAX_LANE_COUNT;
-		outp->dpcd[2] |= outp->base.info.dpconf.link_nr;
-	}
-	if (outp->dpcd[1] > outp->base.info.dpconf.link_bw)
-		outp->dpcd[1] = outp->base.info.dpconf.link_bw;
-	dp->pc2 = outp->dpcd[2] & DPCD_RC02_TPS3_SUPPORTED;
-
-	/* restrict link config to the lowest required rate, if requested */
-	if (datarate) {
-		datarate = (datarate / 8) * 10; /* 8B/10B coding overhead */
-		while (cfg[1].rate >= datarate)
-			cfg++;
-	}
-	cfg--;
-
-	/* disable link interrupt handling during link training */
-	nvkm_notify_put(&outp->irq);
-
-	/* enable down-spreading and execute pre-train script from vbios */
-	dp_link_train_init(dp, outp->dpcd[3] & 0x01);
-
-	while (ret = -EIO, (++cfg)->rate) {
-		/* select next configuration supported by encoder and sink */
-		while (cfg->nr > (outp->dpcd[2] & DPCD_RC02_MAX_LANE_COUNT) ||
-		       cfg->bw > (outp->dpcd[DPCD_RC01_MAX_LINK_RATE]))
-			cfg++;
-		dp->link_bw = cfg->bw * 27000;
-		dp->link_nr = cfg->nr;
-
-		/* program selected link configuration */
-		ret = dp_set_link_config(dp);
-		if (ret == 0) {
-			/* attempt to train the link at this configuration */
-			memset(dp->stat, 0x00, sizeof(dp->stat));
-			if (!dp_link_train_cr(dp) &&
-			    !dp_link_train_eq(dp))
-				break;
-		} else
-		if (ret) {
-			/* dp_set_link_config() handled training, or
-			 * we failed to communicate with the sink.
-			 */
-			break;
-		}
-	}
-
-	/* finish link training and execute post-train script from vbios */
-	dp_set_training_pattern(dp, 0);
-	if (ret < 0)
-		ERR("link training failed\n");
-
-	dp_link_train_fini(dp);
-
-	/* signal completion and enable link interrupt handling */
-	DBG("training complete\n");
-	atomic_set(&outp->lt.done, 1);
-	wake_up(&outp->lt.wait);
-	nvkm_notify_get(&outp->irq);
-}