drivers/gpu/drm/nouveau/nvkm/subdev/gpio/gk104.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24 #include "priv.h"
  25
  26 static void
  27 gk104_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)
  28 {
  29         struct nvkm_device *device = gpio->subdev.device;
  30         u32 intr0 = nvkm_rd32(device, 0x00dc00);
  31         u32 intr1 = nvkm_rd32(device, 0x00dc80);
  32         u32 stat0 = nvkm_rd32(device, 0x00dc08) & intr0;
  33         u32 stat1 = nvkm_rd32(device, 0x00dc88) & intr1;
  34         *lo = (stat1 & 0xffff0000) | (stat0 >> 16);
  35         *hi = (stat1 << 16) | (stat0 & 0x0000ffff);
  36         nvkm_wr32(device, 0x00dc00, intr0);
  37         nvkm_wr32(device, 0x00dc80, intr1);
  38 }
  39
  40 static void
  41 gk104_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data)
  42 {
  43         struct nvkm_device *device = gpio->subdev.device;
  44         u32 inte0 = nvkm_rd32(device, 0x00dc08);
  45         u32 inte1 = nvkm_rd32(device, 0x00dc88);
  46         if (type & NVKM_GPIO_LO)
  47                 inte0 = (inte0 & ~(mask << 16)) | (data << 16);
  48         if (type & NVKM_GPIO_HI)
  49                 inte0 = (inte0 & ~(mask & 0xffff)) | (data & 0xffff);
  50         mask >>= 16;
  51         data >>= 16;
  52         if (type & NVKM_GPIO_LO)
  53                 inte1 = (inte1 & ~(mask << 16)) | (data << 16);
  54         if (type & NVKM_GPIO_HI)
  55                 inte1 = (inte1 & ~mask) | data;
  56         nvkm_wr32(device, 0x00dc08, inte0);
  57         nvkm_wr32(device, 0x00dc88, inte1);
  58 }
  59
  60 static const struct nvkm_gpio_func
  61 gk104_gpio = {
  62         .lines = 32,
  63         .intr_stat = gk104_gpio_intr_stat,
  64         .intr_mask = gk104_gpio_intr_mask,
  65         .drive = gf119_gpio_drive,
  66         .sense = gf119_gpio_sense,
  67         .reset = gf119_gpio_reset,
  68 };
  69
  70 int
  71 gk104_gpio_new(struct nvkm_device *device, int index, struct nvkm_gpio **pgpio)
  72 {
  73         return nvkm_gpio_new_(&gk104_gpio, device, index, pgpio);
  74 }