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 #include "pad.h" 26 27 void 28 g94_aux_stat(struct nvkm_i2c *i2c, u32 *hi, u32 *lo, u32 *rq, u32 *tx) 29 { 30 struct nvkm_device *device = i2c->subdev.device; 31 u32 intr = nvkm_rd32(device, 0x00e06c); 32 u32 stat = nvkm_rd32(device, 0x00e068) & intr, i; 33 for (i = 0, *hi = *lo = *rq = *tx = 0; i < 8; i++) { 34 if ((stat & (1 << (i * 4)))) *hi |= 1 << i; 35 if ((stat & (2 << (i * 4)))) *lo |= 1 << i; 36 if ((stat & (4 << (i * 4)))) *rq |= 1 << i; 37 if ((stat & (8 << (i * 4)))) *tx |= 1 << i; 38 } 39 nvkm_wr32(device, 0x00e06c, intr); 40 } 41 42 void 43 g94_aux_mask(struct nvkm_i2c *i2c, u32 type, u32 mask, u32 data) 44 { 45 struct nvkm_device *device = i2c->subdev.device; 46 u32 temp = nvkm_rd32(device, 0x00e068), i; 47 for (i = 0; i < 8; i++) { 48 if (mask & (1 << i)) { 49 if (!(data & (1 << i))) { 50 temp &= ~(type << (i * 4)); 51 continue; 52 } 53 temp |= type << (i * 4); 54 } 55 } 56 nvkm_wr32(device, 0x00e068, temp); 57 } 58 59 static const struct nvkm_i2c_func 60 g94_i2c = { 61 .pad_x_new = g94_i2c_pad_x_new, 62 .pad_s_new = g94_i2c_pad_s_new, 63 .aux = 4, 64 .aux_stat = g94_aux_stat, 65 .aux_mask = g94_aux_mask, 66 }; 67 68 int 69 g94_i2c_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, 70 struct nvkm_i2c **pi2c) 71 { 72 return nvkm_i2c_new_(&g94_i2c, device, type, inst, pi2c); 73 } 74