257 lines
6.2 KiB
C
257 lines
6.2 KiB
C
/*
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* Copyright 2011 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs
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*/
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#include "priv.h"
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#include <core/option.h>
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#include <core/notify.h>
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static int
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nvkm_gpio_drive(struct nvkm_gpio *gpio, int idx, int line, int dir, int out)
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{
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return gpio->func->drive(gpio, line, dir, out);
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}
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static int
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nvkm_gpio_sense(struct nvkm_gpio *gpio, int idx, int line)
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{
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return gpio->func->sense(gpio, line);
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}
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void
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nvkm_gpio_reset(struct nvkm_gpio *gpio, u8 func)
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{
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if (gpio->func->reset)
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gpio->func->reset(gpio, func);
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}
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int
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nvkm_gpio_find(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line,
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struct dcb_gpio_func *func)
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{
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struct nvkm_device *device = gpio->subdev.device;
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struct nvkm_bios *bios = device->bios;
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u8 ver, len;
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u16 data;
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if (line == 0xff && tag == 0xff)
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return -EINVAL;
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data = dcb_gpio_match(bios, idx, tag, line, &ver, &len, func);
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if (data)
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return 0;
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/* Apple iMac G4 NV18 */
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if (device->quirk && device->quirk->tv_gpio) {
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if (tag == DCB_GPIO_TVDAC0) {
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*func = (struct dcb_gpio_func) {
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.func = DCB_GPIO_TVDAC0,
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.line = device->quirk->tv_gpio,
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.log[0] = 0,
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.log[1] = 1,
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};
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return 0;
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}
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}
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return -ENOENT;
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}
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int
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nvkm_gpio_set(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line, int state)
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{
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struct dcb_gpio_func func;
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int ret;
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ret = nvkm_gpio_find(gpio, idx, tag, line, &func);
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if (ret == 0) {
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int dir = !!(func.log[state] & 0x02);
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int out = !!(func.log[state] & 0x01);
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ret = nvkm_gpio_drive(gpio, idx, func.line, dir, out);
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}
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return ret;
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}
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int
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nvkm_gpio_get(struct nvkm_gpio *gpio, int idx, u8 tag, u8 line)
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{
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struct dcb_gpio_func func;
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int ret;
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ret = nvkm_gpio_find(gpio, idx, tag, line, &func);
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if (ret == 0) {
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ret = nvkm_gpio_sense(gpio, idx, func.line);
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if (ret >= 0)
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ret = (ret == (func.log[1] & 1));
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}
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return ret;
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}
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static void
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nvkm_gpio_intr_fini(struct nvkm_event *event, int type, int index)
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{
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struct nvkm_gpio *gpio = container_of(event, typeof(*gpio), event);
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gpio->func->intr_mask(gpio, type, 1 << index, 0);
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}
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static void
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nvkm_gpio_intr_init(struct nvkm_event *event, int type, int index)
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{
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struct nvkm_gpio *gpio = container_of(event, typeof(*gpio), event);
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gpio->func->intr_mask(gpio, type, 1 << index, 1 << index);
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}
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static int
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nvkm_gpio_intr_ctor(struct nvkm_object *object, void *data, u32 size,
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struct nvkm_notify *notify)
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{
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struct nvkm_gpio_ntfy_req *req = data;
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if (!WARN_ON(size != sizeof(*req))) {
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notify->size = sizeof(struct nvkm_gpio_ntfy_rep);
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notify->types = req->mask;
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notify->index = req->line;
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return 0;
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}
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return -EINVAL;
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}
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static const struct nvkm_event_func
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nvkm_gpio_intr_func = {
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.ctor = nvkm_gpio_intr_ctor,
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.init = nvkm_gpio_intr_init,
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.fini = nvkm_gpio_intr_fini,
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};
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static void
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nvkm_gpio_intr(struct nvkm_subdev *subdev)
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{
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struct nvkm_gpio *gpio = nvkm_gpio(subdev);
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u32 hi, lo, i;
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gpio->func->intr_stat(gpio, &hi, &lo);
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for (i = 0; (hi | lo) && i < gpio->func->lines; i++) {
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struct nvkm_gpio_ntfy_rep rep = {
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.mask = (NVKM_GPIO_HI * !!(hi & (1 << i))) |
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(NVKM_GPIO_LO * !!(lo & (1 << i))),
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};
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nvkm_event_send(&gpio->event, rep.mask, i, &rep, sizeof(rep));
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}
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}
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static int
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nvkm_gpio_fini(struct nvkm_subdev *subdev, bool suspend)
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{
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struct nvkm_gpio *gpio = nvkm_gpio(subdev);
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u32 mask = (1ULL << gpio->func->lines) - 1;
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gpio->func->intr_mask(gpio, NVKM_GPIO_TOGGLED, mask, 0);
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gpio->func->intr_stat(gpio, &mask, &mask);
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return 0;
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}
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static const struct dmi_system_id gpio_reset_ids[] = {
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{
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.ident = "Apple Macbook 10,1",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
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DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro10,1"),
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}
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},
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{ }
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};
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static enum dcb_gpio_func_name power_checks[] = {
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DCB_GPIO_THERM_EXT_POWER_EVENT,
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DCB_GPIO_POWER_ALERT,
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DCB_GPIO_EXT_POWER_LOW,
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};
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static int
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nvkm_gpio_init(struct nvkm_subdev *subdev)
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{
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struct nvkm_gpio *gpio = nvkm_gpio(subdev);
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struct dcb_gpio_func func;
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int ret;
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int i;
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if (dmi_check_system(gpio_reset_ids))
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nvkm_gpio_reset(gpio, DCB_GPIO_UNUSED);
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if (nvkm_boolopt(subdev->device->cfgopt, "NvPowerChecks", true)) {
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for (i = 0; i < ARRAY_SIZE(power_checks); ++i) {
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ret = nvkm_gpio_find(gpio, 0, power_checks[i],
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DCB_GPIO_UNUSED, &func);
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if (ret)
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continue;
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ret = nvkm_gpio_get(gpio, 0, func.func, func.line);
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if (!ret)
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continue;
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nvkm_error(&gpio->subdev,
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"GPU is missing power, check its power "
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"cables. Boot with "
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"nouveau.config=NvPowerChecks=0 to "
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"disable.\n");
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return -EINVAL;
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}
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}
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return 0;
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}
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static void *
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nvkm_gpio_dtor(struct nvkm_subdev *subdev)
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{
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struct nvkm_gpio *gpio = nvkm_gpio(subdev);
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nvkm_event_fini(&gpio->event);
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return gpio;
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}
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static const struct nvkm_subdev_func
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nvkm_gpio = {
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.dtor = nvkm_gpio_dtor,
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.init = nvkm_gpio_init,
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.fini = nvkm_gpio_fini,
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.intr = nvkm_gpio_intr,
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};
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int
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nvkm_gpio_new_(const struct nvkm_gpio_func *func, struct nvkm_device *device,
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enum nvkm_subdev_type type, int inst, struct nvkm_gpio **pgpio)
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{
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struct nvkm_gpio *gpio;
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if (!(gpio = *pgpio = kzalloc(sizeof(*gpio), GFP_KERNEL)))
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return -ENOMEM;
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nvkm_subdev_ctor(&nvkm_gpio, device, type, inst, &gpio->subdev);
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gpio->func = func;
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return nvkm_event_init(&nvkm_gpio_intr_func, 2, func->lines,
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&gpio->event);
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}
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