119 lines
3.2 KiB
C
119 lines
3.2 KiB
C
/*
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* Copyright (C) 2009 Francisco Jerez.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include "priv.h"
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static int
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nv10_gpio_sense(struct nvkm_gpio *gpio, int line)
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{
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struct nvkm_device *device = gpio->subdev.device;
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if (line < 2) {
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line = line * 16;
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line = nvkm_rd32(device, 0x600818) >> line;
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return !!(line & 0x0100);
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} else
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if (line < 10) {
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line = (line - 2) * 4;
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line = nvkm_rd32(device, 0x60081c) >> line;
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return !!(line & 0x04);
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} else
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if (line < 14) {
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line = (line - 10) * 4;
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line = nvkm_rd32(device, 0x600850) >> line;
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return !!(line & 0x04);
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}
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return -EINVAL;
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}
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static int
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nv10_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out)
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{
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struct nvkm_device *device = gpio->subdev.device;
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u32 reg, mask, data;
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if (line < 2) {
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line = line * 16;
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reg = 0x600818;
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mask = 0x00000011;
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data = (dir << 4) | out;
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} else
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if (line < 10) {
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line = (line - 2) * 4;
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reg = 0x60081c;
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mask = 0x00000003;
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data = (dir << 1) | out;
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} else
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if (line < 14) {
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line = (line - 10) * 4;
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reg = 0x600850;
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mask = 0x00000003;
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data = (dir << 1) | out;
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} else {
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return -EINVAL;
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}
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nvkm_mask(device, reg, mask << line, data << line);
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return 0;
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}
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static void
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nv10_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)
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{
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struct nvkm_device *device = gpio->subdev.device;
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u32 intr = nvkm_rd32(device, 0x001104);
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u32 stat = nvkm_rd32(device, 0x001144) & intr;
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*lo = (stat & 0xffff0000) >> 16;
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*hi = (stat & 0x0000ffff);
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nvkm_wr32(device, 0x001104, intr);
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}
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static void
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nv10_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data)
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{
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struct nvkm_device *device = gpio->subdev.device;
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u32 inte = nvkm_rd32(device, 0x001144);
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if (type & NVKM_GPIO_LO)
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inte = (inte & ~(mask << 16)) | (data << 16);
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if (type & NVKM_GPIO_HI)
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inte = (inte & ~mask) | data;
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nvkm_wr32(device, 0x001144, inte);
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}
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static const struct nvkm_gpio_func
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nv10_gpio = {
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.lines = 16,
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.intr_stat = nv10_gpio_intr_stat,
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.intr_mask = nv10_gpio_intr_mask,
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.drive = nv10_gpio_drive,
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.sense = nv10_gpio_sense,
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};
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int
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nv10_gpio_new(struct nvkm_device *device, int index, struct nvkm_gpio **pgpio)
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{
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return nvkm_gpio_new_(&nv10_gpio, device, index, pgpio);
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}
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