drm/nouveau/disp/nv50-: fetch head/OR state at beginning of supervisor

This data will be used by essentially every part of the supervisor
handling process.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/engine/disp/dacgf119.c

@@ -21,8 +21,27 @@
  */
 #include "ior.h"
 
+static void
+gf119_dac_state(struct nvkm_ior *dac, struct nvkm_ior_state *state)
+{
+	struct nvkm_device *device = dac->disp->engine.subdev.device;
+	const u32 coff = (state == &dac->asy) * 0x20000 + dac->id * 0x20;
+	u32 ctrl = nvkm_rd32(device, 0x640180 + coff);
+
+	state->proto_evo = (ctrl & 0x00000f00) >> 8;
+	switch (state->proto_evo) {
+	case 0: state->proto = CRT; break;
+	default:
+		state->proto = UNKNOWN;
+		break;
+	}
+
+	state->head = ctrl & 0x0000000f;
+}
+
 static const struct nvkm_ior_func
 gf119_dac = {
+	.state = gf119_dac_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/dacnv50.c

@@ -126,8 +126,27 @@ nv50_dac_power(NV50_DISP_MTHD_V1)
 	return 0;
 }
 
+static void
+nv50_dac_state(struct nvkm_ior *dac, struct nvkm_ior_state *state)
+{
+	struct nvkm_device *device = dac->disp->engine.subdev.device;
+	const u32 coff = dac->id * 8 + (state == &dac->arm) * 4;
+	u32 ctrl = nvkm_rd32(device, 0x610b58 + coff);
+
+	state->proto_evo = (ctrl & 0x00000f00) >> 8;
+	switch (state->proto_evo) {
+	case 0: state->proto = CRT; break;
+	default:
+		state->proto = UNKNOWN;
+		break;
+	}
+
+	state->head = ctrl & 0x00000003;
+}
+
 static const struct nvkm_ior_func
 nv50_dac = {
+	.state = nv50_dac_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.c

@@ -362,6 +362,7 @@ gf119_disp_super(struct work_struct *work)
 
 	if (disp->super & 0x00000001) {
 		nv50_disp_chan_mthd(disp->chan[0], NV_DBG_DEBUG);
+		nv50_disp_super_1(disp);
 		list_for_each_entry(head, &disp->base.head, head) {
 			if (!(mask[head->id] & 0x00001000))
 				continue;

drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.h

@@ -16,6 +16,8 @@ struct nvkm_ior {
 	struct list_head head;
 
 	struct nvkm_ior_state {
+		unsigned rgdiv;
+		unsigned proto_evo:4;
 		enum nvkm_ior_proto {
 			CRT,
 			TMDS,
@@ -23,6 +25,8 @@ struct nvkm_ior {
 			DP,
 			UNKNOWN
 		} proto:3;
+		unsigned link:2;
+		unsigned head:4;
 	} arm, asy;
 
 	/* Armed DP state. */
@@ -35,6 +39,7 @@ struct nvkm_ior {
 };
 
 struct nvkm_ior_func {
+	void (*state)(struct nvkm_ior *, struct nvkm_ior_state *);
 };
 
 int nvkm_ior_new_(const struct nvkm_ior_func *func, struct nvkm_disp *,
@@ -42,6 +47,10 @@ int nvkm_ior_new_(const struct nvkm_ior_func *func, struct nvkm_disp *,
 void nvkm_ior_del(struct nvkm_ior **);
 struct nvkm_ior *nvkm_ior_find(struct nvkm_disp *, enum nvkm_ior_type, int id);
 
+void nv50_sor_state(struct nvkm_ior *, struct nvkm_ior_state *);
+void g94_sor_state(struct nvkm_ior *, struct nvkm_ior_state *);
+void gf119_sor_state(struct nvkm_ior *, struct nvkm_ior_state *);
+
 #define IOR_MSG(i,l,f,a...) do {                                               \
 	struct nvkm_ior *_ior = (i);                                           \
 	nvkm_##l(&_ior->disp->engine.subdev, "%s: "f, _ior->name, ##a);        \

drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c

@@ -678,6 +678,23 @@ nv50_disp_intr_unk10_0(struct nv50_disp *disp, int head)
 	exec_script(disp, head, 1);
 }
 
+void
+nv50_disp_super_1(struct nv50_disp *disp)
+{
+	struct nvkm_head *head;
+	struct nvkm_ior *ior;
+
+	list_for_each_entry(head, &disp->base.head, head) {
+		head->func->state(head, &head->arm);
+		head->func->state(head, &head->asy);
+	}
+
+	list_for_each_entry(ior, &disp->base.ior, head) {
+		ior->func->state(ior, &ior->arm);
+		ior->func->state(ior, &ior->asy);
+	}
+}
+
 void
 nv50_disp_super(struct work_struct *work)
 {
@@ -692,6 +709,7 @@ nv50_disp_super(struct work_struct *work)
 
 	if (disp->super & 0x00000010) {
 		nv50_disp_chan_mthd(disp->chan[0], NV_DBG_DEBUG);
+		nv50_disp_super_1(disp);
 		list_for_each_entry(head, &disp->base.head, head) {
 			if (!(super & (0x00000020 << head->id)))
 				continue;

drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.h

@@ -29,6 +29,8 @@ struct nv50_disp {
 	struct nv50_disp_chan *chan[17];
 };
 
+void nv50_disp_super_1(struct nv50_disp *);
+
 int nv50_dac_power(NV50_DISP_MTHD_V1);
 int nv50_dac_sense(NV50_DISP_MTHD_V1);
 

drivers/gpu/drm/nouveau/nvkm/engine/disp/piornv50.c

@@ -121,8 +121,28 @@ nv50_pior_power(NV50_DISP_MTHD_V1)
 	return 0;
 }
 
+static void
+nv50_pior_state(struct nvkm_ior *pior, struct nvkm_ior_state *state)
+{
+	struct nvkm_device *device = pior->disp->engine.subdev.device;
+	const u32 coff = pior->id * 8 + (state == &pior->arm) * 4;
+	u32 ctrl = nvkm_rd32(device, 0x610b80 + coff);
+
+	state->proto_evo = (ctrl & 0x00000f00) >> 8;
+	state->rgdiv = 1;
+	switch (state->proto_evo) {
+	case 0: state->proto = TMDS; break;
+	default:
+		state->proto = UNKNOWN;
+		break;
+	}
+
+	state->head = ctrl & 0x00000003;
+}
+
 static const struct nvkm_ior_func
 nv50_pior = {
+	.state = nv50_pior_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/sorg84.c

@@ -23,6 +23,7 @@
 
 static const struct nvkm_ior_func
 g84_sor = {
+	.state = nv50_sor_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/sorg94.c

@@ -278,8 +278,32 @@ nv50_disp_dptmds_war_2(struct nv50_disp *disp, struct dcb_output *outp)
 	}
 }
 
+void
+g94_sor_state(struct nvkm_ior *sor, struct nvkm_ior_state *state)
+{
+	struct nvkm_device *device = sor->disp->engine.subdev.device;
+	const u32 coff = sor->id * 8 + (state == &sor->arm) * 4;
+	u32 ctrl = nvkm_rd32(device, 0x610794 + coff);
+
+	state->proto_evo = (ctrl & 0x00000f00) >> 8;
+	switch (state->proto_evo) {
+	case 0: state->proto = LVDS; state->link = 1; break;
+	case 1: state->proto = TMDS; state->link = 1; break;
+	case 2: state->proto = TMDS; state->link = 2; break;
+	case 5: state->proto = TMDS; state->link = 3; break;
+	case 8: state->proto =   DP; state->link = 1; break;
+	case 9: state->proto =   DP; state->link = 2; break;
+	default:
+		state->proto = UNKNOWN;
+		break;
+	}
+
+	state->head = ctrl & 0x00000003;
+}
+
 static const struct nvkm_ior_func
 g94_sor = {
+	.state = g94_sor_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgf119.c

@@ -130,8 +130,32 @@ gf119_sor_dp_new(struct nvkm_disp *disp, int index,
 	return nvkm_output_dp_new_(&gf119_sor_dp_func, disp, index, dcbE, poutp);
 }
 
+void
+gf119_sor_state(struct nvkm_ior *sor, struct nvkm_ior_state *state)
+{
+	struct nvkm_device *device = sor->disp->engine.subdev.device;
+	const u32 coff = (state == &sor->asy) * 0x20000 + sor->id * 0x20;
+	u32 ctrl = nvkm_rd32(device, 0x640200 + coff);
+
+	state->proto_evo = (ctrl & 0x00000f00) >> 8;
+	switch (state->proto_evo) {
+	case 0: state->proto = LVDS; state->link = 1; break;
+	case 1: state->proto = TMDS; state->link = 1; break;
+	case 2: state->proto = TMDS; state->link = 2; break;
+	case 5: state->proto = TMDS; state->link = 3; break;
+	case 8: state->proto =   DP; state->link = 1; break;
+	case 9: state->proto =   DP; state->link = 2; break;
+	default:
+		state->proto = UNKNOWN;
+		break;
+	}
+
+	state->head = ctrl & 0x0000000f;
+}
+
 static const struct nvkm_ior_func
 gf119_sor = {
+	.state = gf119_sor_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgk104.c

@@ -23,6 +23,7 @@
 
 static const struct nvkm_ior_func
 gk104_sor = {
+	.state = gf119_sor_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgm107.c

@@ -55,6 +55,7 @@ gm107_sor_dp_new(struct nvkm_disp *disp, int index,
 
 static const struct nvkm_ior_func
 gm107_sor = {
+	.state = gf119_sor_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgm200.c

@@ -132,6 +132,7 @@ gm200_sor_magic(struct nvkm_output *outp)
 
 static const struct nvkm_ior_func
 gm200_sor = {
+	.state = gf119_sor_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/sorgt215.c

@@ -23,6 +23,7 @@
 
 static const struct nvkm_ior_func
 gt215_sor = {
+	.state = g94_sor_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/sormcp77.c

@@ -23,6 +23,7 @@
 
 static const struct nvkm_ior_func
 mcp77_sor = {
+	.state = g94_sor_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/sormcp89.c

@@ -23,6 +23,7 @@
 
 static const struct nvkm_ior_func
 mcp89_sor = {
+	.state = g94_sor_state,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/engine/disp/sornv50.c

@@ -79,8 +79,30 @@ nv50_sor_power(NV50_DISP_MTHD_V1)
 	return 0;
 }
 
+void
+nv50_sor_state(struct nvkm_ior *sor, struct nvkm_ior_state *state)
+{
+	struct nvkm_device *device = sor->disp->engine.subdev.device;
+	const u32 coff = sor->id * 8 + (state == &sor->arm) * 4;
+	u32 ctrl = nvkm_rd32(device, 0x610b70 + coff);
+
+	state->proto_evo = (ctrl & 0x00000f00) >> 8;
+	switch (state->proto_evo) {
+	case 0: state->proto = LVDS; state->link = 1; break;
+	case 1: state->proto = TMDS; state->link = 1; break;
+	case 2: state->proto = TMDS; state->link = 2; break;
+	case 5: state->proto = TMDS; state->link = 3; break;
+	default:
+		state->proto = UNKNOWN;
+		break;
+	}
+
+	state->head = ctrl & 0x00000003;
+}
+
 static const struct nvkm_ior_func
 nv50_sor = {
+	.state = nv50_sor_state,
 };
 
 int