1 files changed, 174 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/conn.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/conn.c
new file mode 100644
index 000000000000..cf03e0240ced
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/conn.c
@@ -0,0 +1,174 @@
+/*
+ * 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 "conn.h"
+#include "outp.h"
+#include "priv.h"
+
+#include <subdev/gpio.h>
+
+#include <nvif/event.h>
+
+static int
+nvkm_connector_hpd(struct nvkm_notify *notify)
+{
+	struct nvkm_connector *conn = container_of(notify, typeof(*conn), hpd);
+	struct nvkm_disp *disp = nvkm_disp(conn);
+	struct nvkm_gpio *gpio = nvkm_gpio(conn);
+	const struct nvkm_gpio_ntfy_rep *line = notify->data;
+	struct nvif_notify_conn_rep_v0 rep;
+	int index = conn->index;
+
+	DBG("HPD: %d\n", line->mask);
+
+	if (!gpio->get(gpio, 0, DCB_GPIO_UNUSED, conn->hpd.index))
+		rep.mask = NVIF_NOTIFY_CONN_V0_UNPLUG;
+	else
+		rep.mask = NVIF_NOTIFY_CONN_V0_PLUG;
+	rep.version = 0;
+
+	nvkm_event_send(&disp->hpd, rep.mask, index, &rep, sizeof(rep));
+	return NVKM_NOTIFY_KEEP;
+}
+
+int
+_nvkm_connector_fini(struct nvkm_object *object, bool suspend)
+{
+	struct nvkm_connector *conn = (void *)object;
+	nvkm_notify_put(&conn->hpd);
+	return nvkm_object_fini(&conn->base, suspend);
+}
+
+int
+_nvkm_connector_init(struct nvkm_object *object)
+{
+	struct nvkm_connector *conn = (void *)object;
+	int ret = nvkm_object_init(&conn->base);
+	if (ret == 0)
+		nvkm_notify_get(&conn->hpd);
+	return ret;
+}
+
+void
+_nvkm_connector_dtor(struct nvkm_object *object)
+{
+	struct nvkm_connector *conn = (void *)object;
+	nvkm_notify_fini(&conn->hpd);
+	nvkm_object_destroy(&conn->base);
+}
+
+int
+nvkm_connector_create_(struct nvkm_object *parent,
+		       struct nvkm_object *engine,
+		       struct nvkm_oclass *oclass,
+		       struct nvbios_connE *info, int index,
+		       int length, void **pobject)
+{
+	static const u8 hpd[] = { 0x07, 0x08, 0x51, 0x52, 0x5e, 0x5f, 0x60 };
+	struct nvkm_disp *disp = nvkm_disp(parent);
+	struct nvkm_gpio *gpio = nvkm_gpio(parent);
+	struct nvkm_connector *conn;
+	struct nvkm_output *outp;
+	struct dcb_gpio_func func;
+	int ret;
+
+	list_for_each_entry(outp, &disp->outp, head) {
+		if (outp->conn && outp->conn->index == index) {
+			atomic_inc(&nv_object(outp->conn)->refcount);
+			*pobject = outp->conn;
+			return 1;
+		}
+	}
+
+	ret = nvkm_object_create_(parent, engine, oclass, 0, length, pobject);
+	conn = *pobject;
+	if (ret)
+		return ret;
+
+	conn->info = *info;
+	conn->index = index;
+
+	DBG("type %02x loc %d hpd %02x dp %x di %x sr %x lcdid %x\n",
+	    info->type, info->location, info->hpd, info->dp,
+	    info->di, info->sr, info->lcdid);
+
+	if ((info->hpd = ffs(info->hpd))) {
+		if (--info->hpd >= ARRAY_SIZE(hpd)) {
+			ERR("hpd %02x unknown\n", info->hpd);
+			return 0;
+		}
+		info->hpd = hpd[info->hpd];
+
+		ret = gpio->find(gpio, 0, info->hpd, DCB_GPIO_UNUSED, &func);
+		if (ret) {
+			ERR("func %02x lookup failed, %d\n", info->hpd, ret);
+			return 0;
+		}
+
+		ret = nvkm_notify_init(NULL, &gpio->event, nvkm_connector_hpd,
+				       true, &(struct nvkm_gpio_ntfy_req) {
+					.mask = NVKM_GPIO_TOGGLED,
+					.line = func.line,
+				       },
+				       sizeof(struct nvkm_gpio_ntfy_req),
+				       sizeof(struct nvkm_gpio_ntfy_rep),
+				       &conn->hpd);
+		if (ret) {
+			ERR("func %02x failed, %d\n", info->hpd, ret);
+		} else {
+			DBG("func %02x (HPD)\n", info->hpd);
+		}
+	}
+
+	return 0;
+}
+
+int
+_nvkm_connector_ctor(struct nvkm_object *parent,
+		     struct nvkm_object *engine,
+		     struct nvkm_oclass *oclass, void *info, u32 index,
+		     struct nvkm_object **pobject)
+{
+	struct nvkm_connector *conn;
+	int ret;
+
+	ret = nvkm_connector_create(parent, engine, oclass, info, index, &conn);
+	*pobject = nv_object(conn);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+struct nvkm_oclass *
+nvkm_connector_oclass = &(struct nvkm_connector_impl) {
+	.base = {
+		.handle = 0,
+		.ofuncs = &(struct nvkm_ofuncs) {
+			.ctor = _nvkm_connector_ctor,
+			.dtor = _nvkm_connector_dtor,
+			.init = _nvkm_connector_init,
+			.fini = _nvkm_connector_fini,
+		},
+	},
+}.base;