cregit-Linux how code gets into the kernel

Release 4.11 drivers/media/pci/solo6x10/solo6x10-gpio.c

/*
 * Copyright (C) 2010-2013 Bluecherry, LLC <http://www.bluecherrydvr.com>
 *
 * Original author:
 * Ben Collins <bcollins@ubuntu.com>
 *
 * Additional work by:
 * John Brooks <john.brooks@bluecherry.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/delay.h>
#include <linux/uaccess.h>

#include "solo6x10.h"


static void solo_gpio_mode(struct solo_dev *solo_dev, unsigned int port_mask, unsigned int mode) { int port; unsigned int ret; ret = solo_reg_read(solo_dev, SOLO_GPIO_CONFIG_0); /* To set gpio */ for (port = 0; port < 16; port++) { if (!((1 << port) & port_mask)) continue; ret &= (~(3 << (port << 1))); ret |= ((mode & 3) << (port << 1)); } solo_reg_write(solo_dev, SOLO_GPIO_CONFIG_0, ret); /* To set extended gpio - sensor */ ret = solo_reg_read(solo_dev, SOLO_GPIO_CONFIG_1); for (port = 0; port < 16; port++) { if (!((1 << (port + 16)) & port_mask)) continue; if (!mode) ret &= ~(1 << port); else ret |= 1 << port; } solo_reg_write(solo_dev, SOLO_GPIO_CONFIG_1, ret); }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Collins17799.44%150.00%
Krzysztof Hałasa10.56%150.00%
Total178100.00%2100.00%


static void solo_gpio_set(struct solo_dev *solo_dev, unsigned int value) { solo_reg_write(solo_dev, SOLO_GPIO_DATA_OUT, solo_reg_read(solo_dev, SOLO_GPIO_DATA_OUT) | value); }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Collins3096.77%150.00%
Krzysztof Hałasa13.23%150.00%
Total31100.00%2100.00%


static void solo_gpio_clear(struct solo_dev *solo_dev, unsigned int value) { solo_reg_write(solo_dev, SOLO_GPIO_DATA_OUT, solo_reg_read(solo_dev, SOLO_GPIO_DATA_OUT) & ~value); }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Collins3196.88%150.00%
Krzysztof Hałasa13.12%150.00%
Total32100.00%2100.00%


static void solo_gpio_config(struct solo_dev *solo_dev) { /* Video reset */ solo_gpio_mode(solo_dev, 0x30, 1); solo_gpio_clear(solo_dev, 0x30); udelay(100); solo_gpio_set(solo_dev, 0x30); udelay(100); /* Warning: Don't touch the next line unless you're sure of what * you're doing: first four gpio [0-3] are used for video. */ solo_gpio_mode(solo_dev, 0x0f, 2); /* We use bit 8-15 of SOLO_GPIO_CONFIG_0 for relay purposes */ solo_gpio_mode(solo_dev, 0xff00, 1); /* Initially set relay status to 0 */ solo_gpio_clear(solo_dev, 0xff00); }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Collins7298.63%150.00%
Krzysztof Hałasa11.37%150.00%
Total73100.00%2100.00%


int solo_gpio_init(struct solo_dev *solo_dev) { solo_gpio_config(solo_dev); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Collins1794.44%150.00%
Krzysztof Hałasa15.56%150.00%
Total18100.00%2100.00%


void solo_gpio_exit(struct solo_dev *solo_dev) { solo_gpio_clear(solo_dev, 0x30); solo_gpio_config(solo_dev); }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Collins2195.45%150.00%
Krzysztof Hałasa14.55%150.00%
Total22100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Benjamin Collins35896.76%120.00%
Krzysztof Hałasa71.89%240.00%
Hans Verkuil51.35%240.00%
Total370100.00%5100.00%
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