diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c b/drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c new file mode 100644 index 0000000..ea6483d --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/engine/disp/outpdp.c @@ -0,0 +1,144 @@ +/* + * 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 <subdev/i2c.h> + +#include "outpdp.h" +#include "conn.h" + +static int +nvkm_output_dp_service(void *data, u32 type, int index) +{ + struct nvkm_output_dp *outp = data; + DBG("IRQ: %d\n", type); + return NVKM_EVENT_KEEP; +} + +static int +nvkm_output_dp_hotplug(void *data, u32 type, int index) +{ + struct nvkm_output_dp *outp = data; + DBG("HPD: %d\n", type); + return NVKM_EVENT_KEEP; +} + +int +_nvkm_output_dp_fini(struct nouveau_object *object, bool suspend) +{ + struct nvkm_output_dp *outp = (void *)object; + nouveau_event_put(outp->irq); + return nvkm_output_fini(&outp->base, suspend); +} + +int +_nvkm_output_dp_init(struct nouveau_object *object) +{ + struct nvkm_output_dp *outp = (void *)object; + return nvkm_output_init(&outp->base); +} + +void +_nvkm_output_dp_dtor(struct nouveau_object *object) +{ + struct nvkm_output_dp *outp = (void *)object; + nouveau_event_ref(NULL, &outp->irq); + nvkm_output_destroy(&outp->base); +} + +int +nvkm_output_dp_create_(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, + struct dcb_output *info, int index, + int length, void **pobject) +{ + struct nouveau_bios *bios = nouveau_bios(parent); + struct nouveau_i2c *i2c = nouveau_i2c(parent); + struct nvkm_output_dp *outp; + u8 hdr, cnt, len; + u32 data; + int ret; + + ret = nvkm_output_create_(parent, engine, oclass, info, index, + length, pobject); + outp = *pobject; + if (ret) + return ret; + + nouveau_event_ref(NULL, &outp->base.conn->hpd.event); + + /* access to the aux channel is not optional... */ + if (!outp->base.edid) { + ERR("aux channel not found\n"); + return -ENODEV; + } + + /* nor is the bios data for this output... */ + data = nvbios_dpout_match(bios, outp->base.info.hasht, + outp->base.info.hashm, &outp->version, + &hdr, &cnt, &len, &outp->info); + if (!data) { + ERR("no bios dp data\n"); + return -ENODEV; + } + + DBG("bios dp %02x %02x %02x %02x\n", outp->version, hdr, cnt, len); + + /* link maintenance */ + ret = nouveau_event_new(i2c->ntfy, NVKM_I2C_IRQ, outp->base.edid->index, + nvkm_output_dp_service, outp, &outp->irq); + if (ret) { + ERR("error monitoring aux irq event: %d\n", ret); + return ret; + } + + /* hotplug detect, replaces gpio-based mechanism with aux events */ + ret = nouveau_event_new(i2c->ntfy, NVKM_I2C_PLUG | NVKM_I2C_UNPLUG, + outp->base.edid->index, + nvkm_output_dp_hotplug, outp, + &outp->base.conn->hpd.event); + if (ret) { + ERR("error monitoring aux hpd events: %d\n", ret); + return ret; + } + + return 0; +} + +int +_nvkm_output_dp_ctor(struct nouveau_object *parent, + struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *info, u32 index, + struct nouveau_object **pobject) +{ + struct nvkm_output_dp *outp; + int ret; + + ret = nvkm_output_dp_create(parent, engine, oclass, info, index, &outp); + *pobject = nv_object(outp); + if (ret) + return ret; + + return 0; +} |
