From 9efc583ea9a474a8d89421da8aad4a2265f2ac5a Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Thu, 29 May 2014 11:35:10 +1000 Subject: [PATCH] drm/nouveau/i2c: introduce locking at a per-port level There's also provisions to allow a pad to be locked with a specific routing, for an indefinite period of time. This will be used in future patches. The G94+ pad driver will now also power-down pads when not required. Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/Makefile | 3 + .../gpu/drm/nouveau/core/include/subdev/i2c.h | 8 +- .../gpu/drm/nouveau/core/subdev/i2c/base.c | 102 ++++++++++++++++-- .../gpu/drm/nouveau/core/subdev/i2c/nv04.c | 1 + .../gpu/drm/nouveau/core/subdev/i2c/nv4e.c | 1 + .../gpu/drm/nouveau/core/subdev/i2c/nv50.c | 1 + .../gpu/drm/nouveau/core/subdev/i2c/nv94.c | 22 +--- .../gpu/drm/nouveau/core/subdev/i2c/nvd0.c | 4 +- .../gpu/drm/nouveau/core/subdev/i2c/nve0.c | 2 + drivers/gpu/drm/nouveau/core/subdev/i2c/pad.c | 84 +++++++++++++++ drivers/gpu/drm/nouveau/core/subdev/i2c/pad.h | 58 ++++++++++ .../gpu/drm/nouveau/core/subdev/i2c/padnv04.c | 35 ++++++ .../gpu/drm/nouveau/core/subdev/i2c/padnv94.c | 86 +++++++++++++++ .../gpu/drm/nouveau/core/subdev/i2c/priv.h | 7 +- 14 files changed, 380 insertions(+), 34 deletions(-) create mode 100644 drivers/gpu/drm/nouveau/core/subdev/i2c/pad.c create mode 100644 drivers/gpu/drm/nouveau/core/subdev/i2c/pad.h create mode 100644 drivers/gpu/drm/nouveau/core/subdev/i2c/padnv04.c create mode 100644 drivers/gpu/drm/nouveau/core/subdev/i2c/padnv94.c diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile index ee4a557ec86a..d647e7487a0d 100644 --- a/drivers/gpu/drm/nouveau/Makefile +++ b/drivers/gpu/drm/nouveau/Makefile @@ -132,6 +132,9 @@ nouveau-y += core/subdev/i2c/base.o nouveau-y += core/subdev/i2c/anx9805.o nouveau-y += core/subdev/i2c/aux.o 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/nv04.o nouveau-y += core/subdev/i2c/nv4e.o nouveau-y += core/subdev/i2c/nv50.o diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h b/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h index 9c150568dbb3..db1b39d08013 100644 --- a/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h +++ b/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h @@ -28,6 +28,7 @@ enum nvkm_i2c_event { struct nouveau_i2c_port { struct nouveau_object base; struct i2c_adapter adapter; + struct mutex mutex; struct list_head head; u8 index; @@ -37,9 +38,6 @@ struct nouveau_i2c_port { }; struct nouveau_i2c_func { - void (*acquire)(struct nouveau_i2c_port *); - void (*release)(struct nouveau_i2c_port *); - void (*drive_scl)(struct nouveau_i2c_port *, int); void (*drive_sda)(struct nouveau_i2c_port *, int); int (*sense_scl)(struct nouveau_i2c_port *); @@ -62,12 +60,16 @@ struct nouveau_i2c { struct nouveau_i2c_port *(*find)(struct nouveau_i2c *, u8 index); struct nouveau_i2c_port *(*find_type)(struct nouveau_i2c *, u16 type); + int (*acquire_pad)(struct nouveau_i2c_port *, unsigned long timeout); + void (*release_pad)(struct nouveau_i2c_port *); int (*acquire)(struct nouveau_i2c_port *, unsigned long timeout); void (*release)(struct nouveau_i2c_port *); int (*identify)(struct nouveau_i2c *, int index, const char *what, struct nouveau_i2c_board_info *, bool (*match)(struct nouveau_i2c_port *, struct i2c_board_info *, void *), void *); + + wait_queue_head_t wait; struct list_head ports; }; diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c index a230465f5e65..09ba2cc851cf 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c @@ -31,6 +31,7 @@ #include #include "priv.h" +#include "pad.h" /****************************************************************************** * interface to linux i2c bit-banging algorithm @@ -90,6 +91,15 @@ nouveau_i2c_getsda(void *data) * base i2c "port" class implementation *****************************************************************************/ +int +_nouveau_i2c_port_fini(struct nouveau_object *object, bool suspend) +{ + struct nouveau_i2c_port *port = (void *)object; + struct nvkm_i2c_pad *pad = nvkm_i2c_pad(port); + nv_ofuncs(pad)->fini(nv_object(pad), suspend); + return nouveau_object_fini(&port->base, suspend); +} + void _nouveau_i2c_port_dtor(struct nouveau_object *object) { @@ -106,7 +116,7 @@ nouveau_i2c_port_create_(struct nouveau_object *parent, const struct nouveau_i2c_func *func, int size, void **pobject) { - struct nouveau_device *device = nv_device(parent); + struct nouveau_device *device = nv_device(engine); struct nouveau_i2c *i2c = (void *)engine; struct nouveau_i2c_port *port; int ret; @@ -123,6 +133,7 @@ nouveau_i2c_port_create_(struct nouveau_object *parent, port->index = index; port->aux = -1; port->func = func; + mutex_init(&port->mutex); if ( algo == &nouveau_i2c_bit_algo && !nouveau_boolopt(device->cfgopt, "NvI2C", CSTMSEL)) { @@ -201,19 +212,73 @@ nouveau_i2c_find_type(struct nouveau_i2c *i2c, u16 type) return NULL; } +static void +nouveau_i2c_release_pad(struct nouveau_i2c_port *port) +{ + struct nvkm_i2c_pad *pad = nvkm_i2c_pad(port); + struct nouveau_i2c *i2c = nouveau_i2c(port); + + if (atomic_dec_and_test(&nv_object(pad)->usecount)) { + nv_ofuncs(pad)->fini(nv_object(pad), false); + wake_up_all(&i2c->wait); + } +} + +static int +nouveau_i2c_try_acquire_pad(struct nouveau_i2c_port *port) +{ + struct nvkm_i2c_pad *pad = nvkm_i2c_pad(port); + + if (atomic_add_return(1, &nv_object(pad)->usecount) != 1) { + struct nouveau_object *owner = (void *)pad->port; + do { + if (owner == (void *)port) + return 0; + owner = owner->parent; + } while(owner); + nouveau_i2c_release_pad(port); + return -EBUSY; + } + + pad->next = port; + nv_ofuncs(pad)->init(nv_object(pad)); + return 0; +} + +static int +nouveau_i2c_acquire_pad(struct nouveau_i2c_port *port, unsigned long timeout) +{ + struct nouveau_i2c *i2c = nouveau_i2c(port); + + if (timeout) { + if (wait_event_timeout(i2c->wait, + nouveau_i2c_try_acquire_pad(port) == 0, + timeout) == 0) + return -EBUSY; + } else { + wait_event(i2c->wait, nouveau_i2c_try_acquire_pad(port) == 0); + } + + return 0; +} + static void nouveau_i2c_release(struct nouveau_i2c_port *port) +__releases(pad->mutex) { - if (port->func->release) - port->func->release(port); + nouveau_i2c(port)->release_pad(port); + mutex_unlock(&port->mutex); } static int nouveau_i2c_acquire(struct nouveau_i2c_port *port, unsigned long timeout) +__acquires(pad->mutex) { - if (port->func->acquire) - port->func->acquire(port); - return 0; + int ret; + mutex_lock(&port->mutex); + if ((ret = nouveau_i2c(port)->acquire_pad(port, timeout))) + mutex_unlock(&port->mutex); + return ret; } static int @@ -391,7 +456,7 @@ nouveau_i2c_create_(struct nouveau_object *parent, struct nouveau_i2c *i2c; struct nouveau_object *object; struct dcb_i2c_entry info; - int ret, i, j, index = -1; + int ret, i, j, index = -1, pad; struct dcb_output outp; u8 ver, hdr; u32 data; @@ -405,24 +470,45 @@ nouveau_i2c_create_(struct nouveau_object *parent, nv_subdev(i2c)->intr = nouveau_i2c_intr; i2c->find = nouveau_i2c_find; i2c->find_type = nouveau_i2c_find_type; + i2c->acquire_pad = nouveau_i2c_acquire_pad; + i2c->release_pad = nouveau_i2c_release_pad; i2c->acquire = nouveau_i2c_acquire; i2c->release = nouveau_i2c_release; i2c->identify = nouveau_i2c_identify; + init_waitqueue_head(&i2c->wait); INIT_LIST_HEAD(&i2c->ports); while (!dcb_i2c_parse(bios, ++index, &info)) { if (info.type == DCB_I2C_UNUSED) continue; + if (info.share != DCB_I2C_UNUSED) { + if (info.type == DCB_I2C_NVIO_AUX) + pad = info.drive; + else + pad = info.share; + oclass = impl->pad_s; + } else { + pad = 0x100 + info.drive; + oclass = impl->pad_x; + } + + ret = nouveau_object_ctor(NULL, *pobject, oclass, + NULL, pad, &parent); + if (ret < 0) + continue; + oclass = impl->sclass; do { ret = -EINVAL; if (oclass->handle == info.type) { - ret = nouveau_object_ctor(*pobject, *pobject, + ret = nouveau_object_ctor(parent, *pobject, oclass, &info, index, &object); } } while (ret && (++oclass)->handle); + + nouveau_object_ref(NULL, &parent); } /* in addition to the busses specified in the i2c table, there diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c index a37528d5cc94..b1725bdea967 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv04.c @@ -126,4 +126,5 @@ nv04_i2c_oclass = &(struct nouveau_i2c_impl) { .fini = _nouveau_i2c_fini, }, .sclass = nv04_i2c_sclass, + .pad_x = &nv04_i2c_pad_oclass, }.base; diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c index d97101b3c695..f16c87ce5ba1 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv4e.c @@ -118,4 +118,5 @@ nv4e_i2c_oclass = &(struct nouveau_i2c_impl) { .fini = _nouveau_i2c_fini, }, .sclass = nv4e_i2c_sclass, + .pad_x = &nv04_i2c_pad_oclass, }.base; diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c index bb854981a24b..7b8756d4df08 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv50.c @@ -131,4 +131,5 @@ nv50_i2c_oclass = &(struct nouveau_i2c_impl) { .fini = _nouveau_i2c_fini, }, .sclass = nv50_i2c_sclass, + .pad_x = &nv04_i2c_pad_oclass, }.base; diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c index ec0bd68a9027..f59c3a255462 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nv94.c @@ -185,26 +185,8 @@ out: return ret < 0 ? ret : (stat & 0x000f0000) >> 16; } -void -nv94_i2c_acquire(struct nouveau_i2c_port *base) -{ - struct nv50_i2c_priv *priv = (void *)nv_object(base)->engine; - struct nv50_i2c_port *port = (void *)base; - if (port->ctrl) { - nv_mask(priv, port->ctrl + 0x0c, 0x00000001, 0x00000000); - nv_mask(priv, port->ctrl + 0x00, 0x0000f003, port->data); - } -} - -void -nv94_i2c_release(struct nouveau_i2c_port *base) -{ -} - static const struct nouveau_i2c_func nv94_i2c_func = { - .acquire = nv94_i2c_acquire, - .release = nv94_i2c_release, .drive_scl = nv50_i2c_drive_scl, .drive_sda = nv50_i2c_drive_sda, .sense_scl = nv50_i2c_sense_scl, @@ -241,8 +223,6 @@ nv94_i2c_port_ctor(struct nouveau_object *parent, struct nouveau_object *engine, static const struct nouveau_i2c_func nv94_aux_func = { - .acquire = nv94_i2c_acquire, - .release = nv94_i2c_release, .aux = nv94_aux, }; @@ -303,6 +283,8 @@ nv94_i2c_oclass = &(struct nouveau_i2c_impl) { .fini = _nouveau_i2c_fini, }, .sclass = nv94_i2c_sclass, + .pad_x = &nv04_i2c_pad_oclass, + .pad_s = &nv94_i2c_pad_oclass, .aux = 4, .aux_stat = nv94_aux_stat, .aux_mask = nv94_aux_mask, diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c index 35b8253f324d..364ddb1c5f03 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nvd0.c @@ -42,8 +42,6 @@ nvd0_i2c_sense_sda(struct nouveau_i2c_port *base) static const struct nouveau_i2c_func nvd0_i2c_func = { - .acquire = nv94_i2c_acquire, - .release = nv94_i2c_release, .drive_scl = nv50_i2c_drive_scl, .drive_sda = nv50_i2c_drive_sda, .sense_scl = nvd0_i2c_sense_scl, @@ -106,6 +104,8 @@ nvd0_i2c_oclass = &(struct nouveau_i2c_impl) { .fini = _nouveau_i2c_fini, }, .sclass = nvd0_i2c_sclass, + .pad_x = &nv04_i2c_pad_oclass, + .pad_s = &nv94_i2c_pad_oclass, .aux = 4, .aux_stat = nv94_aux_stat, .aux_mask = nv94_aux_mask, diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/nve0.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/nve0.c index fb53389af89e..cae77e1ad8dc 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/nve0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/nve0.c @@ -64,6 +64,8 @@ nve0_i2c_oclass = &(struct nouveau_i2c_impl) { .fini = _nouveau_i2c_fini, }, .sclass = nvd0_i2c_sclass, + .pad_x = &nv04_i2c_pad_oclass, + .pad_s = &nv94_i2c_pad_oclass, .aux = 4, .aux_stat = nve0_aux_stat, .aux_mask = nve0_aux_mask, diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/pad.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/pad.c new file mode 100644 index 000000000000..e9e412477c12 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/pad.c @@ -0,0 +1,84 @@ +/* + * 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" + +int +_nvkm_i2c_pad_fini(struct nouveau_object *object, bool suspend) +{ + struct nvkm_i2c_pad *pad = (void *)object; + DBG("-> NULL\n"); + pad->port = NULL; + return nouveau_object_fini(&pad->base, suspend); +} + +int +_nvkm_i2c_pad_init(struct nouveau_object *object) +{ + struct nvkm_i2c_pad *pad = (void *)object; + DBG("-> PORT:%02x\n", pad->next->index); + pad->port = pad->next; + return nouveau_object_init(&pad->base); +} + +int +nvkm_i2c_pad_create_(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, int index, + int size, void **pobject) +{ + struct nouveau_i2c *i2c = (void *)engine; + struct nouveau_i2c_port *port; + struct nvkm_i2c_pad *pad; + int ret; + + list_for_each_entry(port, &i2c->ports, head) { + pad = nvkm_i2c_pad(port); + if (pad->index == index) { + atomic_inc(&nv_object(pad)->refcount); + *pobject = pad; + return 1; + } + } + + ret = nouveau_object_create_(parent, engine, oclass, 0, size, pobject); + pad = *pobject; + if (ret) + return ret; + + pad->index = index; + return 0; +} + +int +_nvkm_i2c_pad_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 index, + struct nouveau_object **pobject) +{ + struct nvkm_i2c_pad *pad; + int ret; + ret = nvkm_i2c_pad_create(parent, engine, oclass, index, &pad); + *pobject = nv_object(pad); + return ret; +} diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/pad.h b/drivers/gpu/drm/nouveau/core/subdev/i2c/pad.h new file mode 100644 index 000000000000..452ac10c3004 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/pad.h @@ -0,0 +1,58 @@ +#ifndef __NVKM_I2C_PAD_H__ +#define __NVKM_I2C_PAD_H__ + +#include "priv.h" + +struct nvkm_i2c_pad { + struct nouveau_object base; + int index; + struct nouveau_i2c_port *port; + struct nouveau_i2c_port *next; +}; + +static inline struct nvkm_i2c_pad * +nvkm_i2c_pad(struct nouveau_i2c_port *port) +{ + struct nouveau_object *pad = nv_object(port); + while (pad->parent) + pad = pad->parent; + return (void *)pad; +} + +#define nvkm_i2c_pad_create(p,e,o,i,d) \ + nvkm_i2c_pad_create_((p), (e), (o), (i), sizeof(**d), (void **)d) +#define nvkm_i2c_pad_destroy(p) ({ \ + struct nvkm_i2c_pad *_p = (p); \ + _nvkm_i2c_pad_dtor(nv_object(_p)); \ +}) +#define nvkm_i2c_pad_init(p) ({ \ + struct nvkm_i2c_pad *_p = (p); \ + _nvkm_i2c_pad_init(nv_object(_p)); \ +}) +#define nvkm_i2c_pad_fini(p,s) ({ \ + struct nvkm_i2c_pad *_p = (p); \ + _nvkm_i2c_pad_fini(nv_object(_p), (s)); \ +}) + +int nvkm_i2c_pad_create_(struct nouveau_object *, struct nouveau_object *, + struct nouveau_oclass *, int index, int, void **); + +int _nvkm_i2c_pad_ctor(struct nouveau_object *, struct nouveau_object *, + struct nouveau_oclass *, void *, u32, + struct nouveau_object **); +#define _nvkm_i2c_pad_dtor nouveau_object_destroy +int _nvkm_i2c_pad_init(struct nouveau_object *); +int _nvkm_i2c_pad_fini(struct nouveau_object *, bool); + +#ifndef MSG +#define MSG(l,f,a...) do { \ + struct nvkm_i2c_pad *_pad = (void *)pad; \ + nv_##l(nv_object(_pad)->engine, "PAD:%c:%02x: "f, \ + _pad->index >= 0x100 ? 'X' : 'S', \ + _pad->index >= 0x100 ? _pad->index - 0x100 : _pad->index, ##a); \ +} while(0) +#define DBG(f,a...) MSG(debug, f, ##a) +#define ERR(f,a...) MSG(error, f, ##a) +#endif + +#endif diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/padnv04.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/padnv04.c new file mode 100644 index 000000000000..2c4b61296dd1 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/padnv04.c @@ -0,0 +1,35 @@ +/* + * 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 nouveau_oclass +nv04_i2c_pad_oclass = { + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = _nvkm_i2c_pad_ctor, + .dtor = _nvkm_i2c_pad_dtor, + .init = _nvkm_i2c_pad_init, + .fini = _nvkm_i2c_pad_fini, + }, +}; diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/padnv94.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/padnv94.c new file mode 100644 index 000000000000..0dc6753014f0 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/padnv94.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 nv94_i2c_pad { + struct nvkm_i2c_pad base; + int addr; +}; + +static int +nv94_i2c_pad_fini(struct nouveau_object *object, bool suspend) +{ + struct nouveau_i2c *i2c = (void *)object->engine; + struct nv94_i2c_pad *pad = (void *)object; + nv_mask(i2c, 0x00e50c + pad->addr, 0x00000001, 0x00000001); + return nvkm_i2c_pad_fini(&pad->base, suspend); +} + +static int +nv94_i2c_pad_init(struct nouveau_object *object) +{ + struct nouveau_i2c *i2c = (void *)object->engine; + struct nv94_i2c_pad *pad = (void *)object; + + switch (nv_oclass(pad->base.next)->handle) { + case NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_AUX): + nv_mask(i2c, 0x00e500 + pad->addr, 0x0000c003, 0x00000002); + break; + case NV_I2C_TYPE_DCBI2C(DCB_I2C_NVIO_BIT): + default: + nv_mask(i2c, 0x00e500 + pad->addr, 0x0000c003, 0x0000c001); + break; + } + + nv_mask(i2c, 0x00e50c + pad->addr, 0x00000001, 0x00000000); + return nvkm_i2c_pad_init(&pad->base); +} + +static int +nv94_i2c_pad_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 index, + struct nouveau_object **pobject) +{ + struct nv94_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 +nv94_i2c_pad_oclass = { + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nv94_i2c_pad_ctor, + .dtor = _nvkm_i2c_pad_dtor, + .init = nv94_i2c_pad_init, + .fini = nv94_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 9a1e420e2fd1..780090b6425a 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/priv.h @@ -3,6 +3,9 @@ #include +extern struct nouveau_oclass nv04_i2c_pad_oclass; +extern struct nouveau_oclass nv94_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), \ sizeof(**d), (void **)d) @@ -22,7 +25,7 @@ int nouveau_i2c_port_create_(struct nouveau_object *, struct nouveau_object *, int, void **); void _nouveau_i2c_port_dtor(struct nouveau_object *); #define _nouveau_i2c_port_init nouveau_object_init -#define _nouveau_i2c_port_fini nouveau_object_fini +int _nouveau_i2c_port_fini(struct nouveau_object *, bool); #define nouveau_i2c_create(p,e,o,d) \ nouveau_i2c_create_((p), (e), (o), sizeof(**d), (void **)d) @@ -59,6 +62,8 @@ struct nouveau_i2c_impl { /* supported i2c port classes */ struct nouveau_oclass *sclass; + struct nouveau_oclass *pad_x; + struct nouveau_oclass *pad_s; /* number of native dp aux channels present */ int aux; -- 2.20.1