cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/gpio/gf119.c

/*
 * Copyright 2012 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Ben Skeggs
 */
#include "priv.h"


void gf119_gpio_reset(struct nvkm_gpio *gpio, u8 match) { struct nvkm_device *device = gpio->subdev.device; struct nvkm_bios *bios = device->bios; u8 ver, len; u16 entry; int ent = -1; while ((entry = dcb_gpio_entry(bios, 0, ++ent, &ver, &len))) { u32 data = nvbios_rd32(bios, entry); u8 line = (data & 0x0000003f); u8 defs = !!(data & 0x00000080); u8 func = (data & 0x0000ff00) >> 8; u8 unk0 = (data & 0x00ff0000) >> 16; u8 unk1 = (data & 0x1f000000) >> 24; if ( func == DCB_GPIO_UNUSED || (match != DCB_GPIO_UNUSED && match != func)) continue; nvkm_gpio_set(gpio, 0, func, line, defs); nvkm_mask(device, 0x00d610 + (line * 4), 0xff, unk0); if (unk1--) nvkm_mask(device, 0x00d740 + (unk1 * 4), 0xff, line); } }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs203100.00%7100.00%
Total203100.00%7100.00%


int gf119_gpio_drive(struct nvkm_gpio *gpio, int line, int dir, int out) { struct nvkm_device *device = gpio->subdev.device; u32 data = ((dir ^ 1) << 13) | (out << 12); nvkm_mask(device, 0x00d610 + (line * 4), 0x00003000, data); nvkm_mask(device, 0x00d604, 0x00000001, 0x00000001); /* update? */ return 0; }

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PersonTokensPropCommitsCommitProp
Ben Skeggs81100.00%4100.00%
Total81100.00%4100.00%


int gf119_gpio_sense(struct nvkm_gpio *gpio, int line) { struct nvkm_device *device = gpio->subdev.device; return !!(nvkm_rd32(device, 0x00d610 + (line * 4)) & 0x00004000); }

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PersonTokensPropCommitsCommitProp
Ben Skeggs44100.00%4100.00%
Total44100.00%4100.00%

static const struct nvkm_gpio_func gf119_gpio = { .lines = 32, .intr_stat = g94_gpio_intr_stat, .intr_mask = g94_gpio_intr_mask, .drive = gf119_gpio_drive, .sense = gf119_gpio_sense, .reset = gf119_gpio_reset, };
int gf119_gpio_new(struct nvkm_device *device, int index, struct nvkm_gpio **pgpio) { return nvkm_gpio_new_(&gf119_gpio, device, index, pgpio); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs32100.00%1100.00%
Total32100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs402100.00%11100.00%
Total402100.00%11100.00%
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