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      1 /*	$NetBSD: nouveau_nvkm_subdev_i2c_padg94.c,v 1.3 2021/12/18 23:45:40 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2014 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Ben Skeggs
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_i2c_padg94.c,v 1.3 2021/12/18 23:45:40 riastradh Exp $");
     28 
     29 #include "pad.h"
     30 #include "aux.h"
     31 #include "bus.h"
     32 
     33 void
     34 g94_i2c_pad_mode(struct nvkm_i2c_pad *pad, enum nvkm_i2c_pad_mode mode)
     35 {
     36 	struct nvkm_subdev *subdev = &pad->i2c->subdev;
     37 	struct nvkm_device *device = subdev->device;
     38 	const u32 base = (pad->id - NVKM_I2C_PAD_HYBRID(0)) * 0x50;
     39 
     40 	switch (mode) {
     41 	case NVKM_I2C_PAD_OFF:
     42 		nvkm_mask(device, 0x00e50c + base, 0x00000001, 0x00000001);
     43 		break;
     44 	case NVKM_I2C_PAD_I2C:
     45 		nvkm_mask(device, 0x00e500 + base, 0x0000c003, 0x0000c001);
     46 		nvkm_mask(device, 0x00e50c + base, 0x00000001, 0x00000000);
     47 		break;
     48 	case NVKM_I2C_PAD_AUX:
     49 		nvkm_mask(device, 0x00e500 + base, 0x0000c003, 0x00000002);
     50 		nvkm_mask(device, 0x00e50c + base, 0x00000001, 0x00000000);
     51 		break;
     52 	default:
     53 		WARN_ON(1);
     54 		break;
     55 	}
     56 }
     57 
     58 static const struct nvkm_i2c_pad_func
     59 g94_i2c_pad_s_func = {
     60 	.bus_new_4 = nv50_i2c_bus_new,
     61 	.aux_new_6 = g94_i2c_aux_new,
     62 	.mode = g94_i2c_pad_mode,
     63 };
     64 
     65 int
     66 g94_i2c_pad_s_new(struct nvkm_i2c *i2c, int id, struct nvkm_i2c_pad **ppad)
     67 {
     68 	return nvkm_i2c_pad_new_(&g94_i2c_pad_s_func, i2c, id, ppad);
     69 }
     70 
     71 static const struct nvkm_i2c_pad_func
     72 g94_i2c_pad_x_func = {
     73 	.bus_new_4 = nv50_i2c_bus_new,
     74 	.aux_new_6 = g94_i2c_aux_new,
     75 };
     76 
     77 int
     78 g94_i2c_pad_x_new(struct nvkm_i2c *i2c, int id, struct nvkm_i2c_pad **ppad)
     79 {
     80 	return nvkm_i2c_pad_new_(&g94_i2c_pad_x_func, i2c, id, ppad);
     81 }
     82