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, 199 deletions

diff --git a/nvkm/subdev/volt/gk20a.c b/nvkm/subdev/volt/gk20a.c
deleted file mode 100644
index 717368ef3..000000000
--- a/nvkm/subdev/volt/gk20a.c
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
- *
- * 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 AUTHORS OR COPYRIGHT HOLDERS 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.
- */
-
-#ifdef __KERNEL__
-#include <nouveau_platform.h>
-#endif
-#include <subdev/volt.h>
-
-struct cvb_coef {
-	int c0;
-	int c1;
-	int c2;
-	int c3;
-	int c4;
-	int c5;
-};
-
-struct gk20a_volt_priv {
-	struct nouveau_volt base;
-	struct regulator *vdd;
-};
-
-const struct cvb_coef gk20a_cvb_coef[] = {
-	/* MHz,        c0,     c1,   c2,    c3,     c4,   c5 */
-	/*  72 */ { 1209886, -36468,  515,   417, -13123,  203},
-	/* 108 */ { 1130804, -27659,  296,   298, -10834,  221},
-	/* 180 */ { 1162871, -27110,  247,   238, -10681,  268},
-	/* 252 */ { 1220458, -28654,  247,   179, -10376,  298},
-	/* 324 */ { 1280953, -30204,  247,   119,  -9766,  304},
-	/* 396 */ { 1344547, -31777,  247,   119,  -8545,  292},
-	/* 468 */ { 1420168, -34227,  269,    60,  -7172,  256},
-	/* 540 */ { 1490757, -35955,  274,    60,  -5188,  197},
-	/* 612 */ { 1599112, -42583,  398,     0,  -1831,  119},
-	/* 648 */ { 1366986, -16459, -274,     0,  -3204,   72},
-	/* 684 */ { 1391884, -17078, -274,   -60,  -1526,   30},
-	/* 708 */ { 1415522, -17497, -274,   -60,   -458,    0},
-	/* 756 */ { 1464061, -18331, -274,  -119,   1831,  -72},
-	/* 804 */ { 1524225, -20064, -254,  -119,   4272, -155},
-	/* 852 */ { 1608418, -21643, -269,     0,    763,  -48},
-};
-
-/**
- * cvb_mv = ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0)
- */
-static inline int
-gk20a_volt_get_cvb_voltage(int speedo, int s_scale,
-		const struct cvb_coef *coef)
-{
-	int mv;
-
-	mv = DIV_ROUND_CLOSEST(coef->c2 * speedo, s_scale);
-	mv = DIV_ROUND_CLOSEST((mv + coef->c1) * speedo, s_scale) + coef->c0;
-	return mv;
-}
-
-/**
- * cvb_t_mv =
- * ((c2 * speedo / s_scale + c1) * speedo / s_scale + c0) +
- * ((c3 * speedo / s_scale + c4 + c5 * T / t_scale) * T / t_scale)
- */
-static inline int
-gk20a_volt_get_cvb_t_voltage(int speedo, int temp, int s_scale, int t_scale,
-		const struct cvb_coef *coef)
-{
-	int cvb_mv, mv;
-
-	cvb_mv = gk20a_volt_get_cvb_voltage(speedo, s_scale, coef);
-
-	mv = DIV_ROUND_CLOSEST(coef->c3 * speedo, s_scale) + coef->c4 +
-		DIV_ROUND_CLOSEST(coef->c5 * temp, t_scale);
-	mv = DIV_ROUND_CLOSEST(mv * temp, t_scale) + cvb_mv;
-	return mv;
-}
-
-static int
-gk20a_volt_calc_voltage(const struct cvb_coef *coef, int speedo)
-{
-	int mv;
-
-	mv = gk20a_volt_get_cvb_t_voltage(speedo, -10, 100, 10, coef);
-	mv = DIV_ROUND_UP(mv, 1000);
-
-	return mv * 1000;
-}
-
-static int
-gk20a_volt_vid_get(struct nouveau_volt *volt)
-{
-	struct gk20a_volt_priv *priv = (void *)volt;
-	int i, uv;
-
-	uv = regulator_get_voltage(priv->vdd);
-
-	for (i = 0; i < volt->vid_nr; i++)
-		if (volt->vid[i].uv >= uv)
-			return i;
-
-	return -EINVAL;
-}
-
-static int
-gk20a_volt_vid_set(struct nouveau_volt *volt, u8 vid)
-{
-	struct gk20a_volt_priv *priv = (void *)volt;
-
-	nv_debug(volt, "set voltage as %duv\n", volt->vid[vid].uv);
-	return regulator_set_voltage(priv->vdd, volt->vid[vid].uv, 1200000);
-}
-
-static int
-gk20a_volt_set_id(struct nouveau_volt *volt, u8 id, int condition)
-{
-	struct gk20a_volt_priv *priv = (void *)volt;
-	int prev_uv = regulator_get_voltage(priv->vdd);
-	int target_uv = volt->vid[id].uv;
-	int ret;
-
-	nv_debug(volt, "prev=%d, target=%d, condition=%d\n",
-			prev_uv, target_uv, condition);
-	if (!condition ||
-		(condition < 0 && target_uv < prev_uv) ||
-		(condition > 0 && target_uv > prev_uv)) {
-		ret = gk20a_volt_vid_set(volt, volt->vid[id].vid);
-	} else {
-		ret = 0;
-	}
-
-	return ret;
-}
-
-static int
-gk20a_volt_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
-	       struct nouveau_oclass *oclass, void *data, u32 size,
-	       struct nouveau_object **pobject)
-{
-	struct gk20a_volt_priv *priv;
-	struct nouveau_volt *volt;
-	struct nouveau_platform_device *plat;
-	int i, ret, uv;
-
-	ret = nouveau_volt_create(parent, engine, oclass, &priv);
-	*pobject = nv_object(priv);
-	if (ret)
-		return ret;
-
-	volt = &priv->base;
-
-	plat = nv_device_to_platform(nv_device(parent));
-
-	uv = regulator_get_voltage(plat->gpu->vdd);
-	nv_info(priv, "The default voltage is %duV\n", uv);
-
-	priv->vdd = plat->gpu->vdd;
-	priv->base.vid_get = gk20a_volt_vid_get;
-	priv->base.vid_set = gk20a_volt_vid_set;
-	priv->base.set_id = gk20a_volt_set_id;
-
-	volt->vid_nr = ARRAY_SIZE(gk20a_cvb_coef);
-	nv_debug(priv, "%s - vid_nr = %d\n", __func__, volt->vid_nr);
-	for (i = 0; i < volt->vid_nr; i++) {
-		volt->vid[i].vid = i;
-		volt->vid[i].uv = gk20a_volt_calc_voltage(&gk20a_cvb_coef[i],
-					plat->gpu_speedo);
-		nv_debug(priv, "%2d: vid=%d, uv=%d\n", i, volt->vid[i].vid,
-					volt->vid[i].uv);
-	}
-
-	return 0;
-}
-
-struct nouveau_oclass
-gk20a_volt_oclass = {
-	.handle = NV_SUBDEV(VOLT, 0xea),
-	.ofuncs = &(struct nouveau_ofuncs) {
-		.ctor = gk20a_volt_ctor,
-		.dtor = _nouveau_volt_dtor,
-		.init = _nouveau_volt_init,
-		.fini = _nouveau_volt_fini,
-	},
-};