drm/gm204/i2c: add pad driver

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

diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile
index fe0f770..b7dd0dc 100644 (file)
--- a/drivers/gpu/drm/nouveau/Makefile
+++ b/drivers/gpu/drm/nouveau/Makefile
@@ -158,6 +158,7 @@ nouveau-y += core/subdev/i2c/bit.o
 nouveau-y += core/subdev/i2c/pad.o
 nouveau-y += core/subdev/i2c/padnv04.o
 nouveau-y += core/subdev/i2c/padnv94.o
+nouveau-y += core/subdev/i2c/padgm204.o
 nouveau-y += core/subdev/i2c/nv04.o
 nouveau-y += core/subdev/i2c/nv4e.o
 nouveau-y += core/subdev/i2c/nv50.o

diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/padgm204.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/padgm204.c
new file mode 100644 (file)
index 0000000..f0e6fbb
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/padgm204.c
@@ -0,0 +1,86 @@
+/*
+ * 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 "pad.h"
+
+struct gm204_i2c_pad {
+       struct nvkm_i2c_pad base;
+       int addr;
+};
+
+static int
+gm204_i2c_pad_fini(struct nouveau_object *object, bool suspend)
+{
+       struct nouveau_i2c *i2c = (void *)object->engine;
+       struct gm204_i2c_pad *pad = (void *)object;
+       nv_mask(i2c, 0x00d97c + pad->addr, 0x00000001, 0x00000001);
+       return nvkm_i2c_pad_fini(&pad->base, suspend);
+}
+
+static int
+gm204_i2c_pad_init(struct nouveau_object *object)
+{
+       struct nouveau_i2c *i2c = (void *)object->engine;
+       struct gm204_i2c_pad *pad = (void *)object;
+
+       switch (nv_oclass(pad->base.next)->handle) {
+       case NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_AUX):
+               nv_mask(i2c, 0x00d970 + pad->addr, 0x0000c003, 0x00000002);
+               break;
+       case NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT):
+       default:
+               nv_mask(i2c, 0x00d970 + pad->addr, 0x0000c003, 0x0000c001);
+               break;
+       }
+
+       nv_mask(i2c, 0x00d97c + pad->addr, 0x00000001, 0x00000000);
+       return nvkm_i2c_pad_init(&pad->base);
+}
+
+static int
+gm204_i2c_pad_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+                 struct nouveau_oclass *oclass, void *data, u32 index,
+                 struct nouveau_object **pobject)
+{
+       struct gm204_i2c_pad *pad;
+       int ret;
+
+       ret = nvkm_i2c_pad_create(parent, engine, oclass, index, &pad);
+       *pobject = nv_object(pad);
+       if (ret)
+               return ret;
+
+       pad->addr = index * 0x50;;
+       return 0;
+}
+
+struct nouveau_oclass
+gm204_i2c_pad_oclass = {
+       .ofuncs = &(struct nouveau_ofuncs) {
+               .ctor = gm204_i2c_pad_ctor,
+               .dtor = _nvkm_i2c_pad_dtor,
+               .init = gm204_i2c_pad_init,
+               .fini = gm204_i2c_pad_fini,
+       },
+};

diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h b/drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h
index 780090b..25acf8c 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h
+++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h
@@ -5,6 +5,7 @@
 
 extern struct nouveau_oclass nv04_i2c_pad_oclass;
 extern struct nouveau_oclass nv94_i2c_pad_oclass;
+extern struct nouveau_oclass gm204_i2c_pad_oclass;
 
 #define nouveau_i2c_port_create(p,e,o,i,a,f,d)                                 \
        nouveau_i2c_port_create_((p), (e), (o), (i), (a), (f),                 \