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      1 /*	$NetBSD: nouveau_nvkm_subdev_gpio_g94.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012 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_gpio_g94.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $");
     28 
     29 #include "priv.h"
     30 
     31 void
     32 g94_gpio_intr_stat(struct nvkm_gpio *gpio, u32 *hi, u32 *lo)
     33 {
     34 	struct nvkm_device *device = gpio->subdev.device;
     35 	u32 intr0 = nvkm_rd32(device, 0x00e054);
     36 	u32 intr1 = nvkm_rd32(device, 0x00e074);
     37 	u32 stat0 = nvkm_rd32(device, 0x00e050) & intr0;
     38 	u32 stat1 = nvkm_rd32(device, 0x00e070) & intr1;
     39 	*lo = (stat1 & 0xffff0000) | (stat0 >> 16);
     40 	*hi = (stat1 << 16) | (stat0 & 0x0000ffff);
     41 	nvkm_wr32(device, 0x00e054, intr0);
     42 	nvkm_wr32(device, 0x00e074, intr1);
     43 }
     44 
     45 void
     46 g94_gpio_intr_mask(struct nvkm_gpio *gpio, u32 type, u32 mask, u32 data)
     47 {
     48 	struct nvkm_device *device = gpio->subdev.device;
     49 	u32 inte0 = nvkm_rd32(device, 0x00e050);
     50 	u32 inte1 = nvkm_rd32(device, 0x00e070);
     51 	if (type & NVKM_GPIO_LO)
     52 		inte0 = (inte0 & ~(mask << 16)) | (data << 16);
     53 	if (type & NVKM_GPIO_HI)
     54 		inte0 = (inte0 & ~(mask & 0xffff)) | (data & 0xffff);
     55 	mask >>= 16;
     56 	data >>= 16;
     57 	if (type & NVKM_GPIO_LO)
     58 		inte1 = (inte1 & ~(mask << 16)) | (data << 16);
     59 	if (type & NVKM_GPIO_HI)
     60 		inte1 = (inte1 & ~mask) | data;
     61 	nvkm_wr32(device, 0x00e050, inte0);
     62 	nvkm_wr32(device, 0x00e070, inte1);
     63 }
     64 
     65 static const struct nvkm_gpio_func
     66 g94_gpio = {
     67 	.lines = 32,
     68 	.intr_stat = g94_gpio_intr_stat,
     69 	.intr_mask = g94_gpio_intr_mask,
     70 	.drive = nv50_gpio_drive,
     71 	.sense = nv50_gpio_sense,
     72 	.reset = nv50_gpio_reset,
     73 };
     74 
     75 int
     76 g94_gpio_new(struct nvkm_device *device, int index, struct nvkm_gpio **pgpio)
     77 {
     78 	return nvkm_gpio_new_(&g94_gpio, device, index, pgpio);
     79 }
     80