5 files changed, 200 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/clk.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/clk.h
index d5d8877064a7..6a09d397c651 100644
--- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/clk.h
+++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/clk.h
@@ -134,4 +134,5 @@ int gf100_clk_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct
 int gk104_clk_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_clk **);
 int gk20a_clk_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_clk **);
 int gm20b_clk_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_clk **);
+int gp10b_clk_new(struct nvkm_device *, enum nvkm_subdev_type, int inst, struct nvkm_clk **);
 #endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
index 3375a59ebf1a..2517b65d8faa 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/base.c
@@ -2280,6 +2280,7 @@ nv13b_chipset = {
 	.acr      = { 0x00000001, gp10b_acr_new },
 	.bar      = { 0x00000001, gm20b_bar_new },
 	.bus      = { 0x00000001, gf100_bus_new },
+	.clk      = { 0x00000001, gp10b_clk_new },
 	.fault    = { 0x00000001, gp10b_fault_new },
 	.fb       = { 0x00000001, gp10b_fb_new },
 	.fuse     = { 0x00000001, gm107_fuse_new },
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/Kbuild
index dcecd499d8df..9fe394740f56 100644
--- a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/Kbuild
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/Kbuild
@@ -10,6 +10,7 @@ nvkm-y += nvkm/subdev/clk/gf100.o
 nvkm-y += nvkm/subdev/clk/gk104.o
 nvkm-y += nvkm/subdev/clk/gk20a.o
 nvkm-y += nvkm/subdev/clk/gm20b.o
+nvkm-y += nvkm/subdev/clk/gp10b.o
 
 nvkm-y += nvkm/subdev/clk/pllnv04.o
 nvkm-y += nvkm/subdev/clk/pllgt215.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gp10b.c b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gp10b.c
new file mode 100644
index 000000000000..a0be53ffeb44
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gp10b.c
@@ -0,0 +1,180 @@
+// SPDX-License-Identifier: MIT
+#include <subdev/clk.h>
+#include <subdev/timer.h>
+#include <core/device.h>
+#include <core/tegra.h>
+
+#include "priv.h"
+#include "gk20a.h"
+#include "gp10b.h"
+
+static int
+gp10b_clk_init(struct nvkm_clk *base)
+{
+	struct gp10b_clk *clk = gp10b_clk(base);
+	struct nvkm_subdev *subdev = &clk->base.subdev;
+	int ret;
+
+	/* Start with the highest frequency, matching the BPMP default */
+	base->func->calc(base, &base->func->pstates[base->func->nr_pstates - 1].base);
+	ret = base->func->prog(base);
+	if (ret) {
+		nvkm_error(subdev, "cannot initialize clock\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int
+gp10b_clk_read(struct nvkm_clk *base, enum nv_clk_src src)
+{
+	struct gp10b_clk *clk = gp10b_clk(base);
+	struct nvkm_subdev *subdev = &clk->base.subdev;
+
+	switch (src) {
+	case nv_clk_src_gpc:
+		return clk_get_rate(clk->clk) / GK20A_CLK_GPC_MDIV;
+	default:
+		nvkm_error(subdev, "invalid clock source %d\n", src);
+		return -EINVAL;
+	}
+}
+
+static int
+gp10b_clk_calc(struct nvkm_clk *base, struct nvkm_cstate *cstate)
+{
+	struct gp10b_clk *clk = gp10b_clk(base);
+	u32 target_rate = cstate->domain[nv_clk_src_gpc] * GK20A_CLK_GPC_MDIV;
+
+	clk->new_rate = clk_round_rate(clk->clk, target_rate) / GK20A_CLK_GPC_MDIV;
+
+	return 0;
+}
+
+static int
+gp10b_clk_prog(struct nvkm_clk *base)
+{
+	struct gp10b_clk *clk = gp10b_clk(base);
+	int ret;
+
+	ret = clk_set_rate(clk->clk, clk->new_rate * GK20A_CLK_GPC_MDIV);
+	if (ret < 0)
+		return ret;
+
+	clk->rate = clk_get_rate(clk->clk) / GK20A_CLK_GPC_MDIV;
+
+	return 0;
+}
+
+static struct nvkm_pstate
+gp10b_pstates[] = {
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 114750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 216750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 318750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 420750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 522750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 624750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 726750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 828750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 930750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 1032750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 1134750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 1236750,
+		},
+	},
+	{
+		.base = {
+			.domain[nv_clk_src_gpc] = 1300500,
+		},
+	},
+};
+
+static const struct nvkm_clk_func
+gp10b_clk = {
+	.init = gp10b_clk_init,
+	.read = gp10b_clk_read,
+	.calc = gp10b_clk_calc,
+	.prog = gp10b_clk_prog,
+	.tidy = gk20a_clk_tidy,
+	.pstates = gp10b_pstates,
+	.nr_pstates = ARRAY_SIZE(gp10b_pstates),
+	.domains = {
+		{ nv_clk_src_gpc, 0xff, 0, "core", GK20A_CLK_GPC_MDIV },
+		{ nv_clk_src_max }
+	}
+};
+
+int
+gp10b_clk_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
+	      struct nvkm_clk **pclk)
+{
+	struct nvkm_device_tegra *tdev = device->func->tegra(device);
+	const struct nvkm_clk_func *func = &gp10b_clk;
+	struct gp10b_clk *clk;
+	int ret, i;
+
+	clk = kzalloc(sizeof(*clk), GFP_KERNEL);
+	if (!clk)
+		return -ENOMEM;
+	*pclk = &clk->base;
+	clk->clk = tdev->clk;
+
+	/* Finish initializing the pstates */
+	for (i = 0; i < func->nr_pstates; i++) {
+		INIT_LIST_HEAD(&func->pstates[i].list);
+		func->pstates[i].pstate = i + 1;
+	}
+
+	ret = nvkm_clk_ctor(func, device, type, inst, true, &clk->base);
+	if (ret)
+		return ret;
+
+	return 0;
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gp10b.h b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gp10b.h
new file mode 100644
index 000000000000..3c7ca5207824
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/clk/gp10b.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_CLK_GP10B_H__
+#define __NVKM_CLK_GP10B_H__
+
+struct gp10b_clk {
+	/* currently applied parameters */
+	struct nvkm_clk base;
+	struct clk *clk;
+	u32 rate;
+
+	/* new parameters to apply */
+	u32 new_rate;
+};
+
+#define gp10b_clk(p) container_of((p), struct gp10b_clk, base)
+
+#endif