diff options
Diffstat (limited to 'nvkm/subdev/volt/gpio.c')
-rw-r--r-- | nvkm/subdev/volt/gpio.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/nvkm/subdev/volt/gpio.c b/nvkm/subdev/volt/gpio.c deleted file mode 100644 index 755fa91bc..000000000 --- a/nvkm/subdev/volt/gpio.c +++ /dev/null @@ -1,96 +0,0 @@ -/* - * Copyright 2013 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/volt.h> -#include <subdev/gpio.h> -#include <subdev/bios/gpio.h> - -static const u8 tags[] = { - DCB_GPIO_VID0, DCB_GPIO_VID1, DCB_GPIO_VID2, DCB_GPIO_VID3, - DCB_GPIO_VID4, DCB_GPIO_VID5, DCB_GPIO_VID6, DCB_GPIO_VID7, -}; - -int -nouveau_voltgpio_get(struct nouveau_volt *volt) -{ - struct nouveau_gpio *gpio = nouveau_gpio(volt); - u8 vid = 0; - int i; - - for (i = 0; i < ARRAY_SIZE(tags); i++) { - if (volt->vid_mask & (1 << i)) { - int ret = gpio->get(gpio, 0, tags[i], 0xff); - if (ret < 0) - return ret; - vid |= ret << i; - } - } - - return vid; -} - -int -nouveau_voltgpio_set(struct nouveau_volt *volt, u8 vid) -{ - struct nouveau_gpio *gpio = nouveau_gpio(volt); - int i; - - for (i = 0; i < ARRAY_SIZE(tags); i++, vid >>= 1) { - if (volt->vid_mask & (1 << i)) { - int ret = gpio->set(gpio, 0, tags[i], 0xff, vid & 1); - if (ret < 0) - return ret; - } - } - - return 0; -} - -int -nouveau_voltgpio_init(struct nouveau_volt *volt) -{ - struct nouveau_gpio *gpio = nouveau_gpio(volt); - struct dcb_gpio_func func; - int i; - - /* check we have gpio function info for each vid bit. on some - * boards (ie. nvs295) the vid mask has more bits than there - * are valid gpio functions... from traces, nvidia appear to - * just touch the existing ones, so let's mask off the invalid - * bits and continue with life - */ - for (i = 0; i < ARRAY_SIZE(tags); i++) { - if (volt->vid_mask & (1 << i)) { - int ret = gpio->find(gpio, 0, tags[i], 0xff, &func); - if (ret) { - if (ret != -ENOENT) - return ret; - nv_debug(volt, "VID bit %d has no GPIO\n", i); - volt->vid_mask &= ~(1 << i); - } - } - } - - return 0; -} |