cregit-Linux how code gets into the kernel

Release 4.11 drivers/media/pci/cx23885/netup-init.c

/*
 * netup-init.c
 *
 * NetUP Dual DVB-S2 CI driver
 *
 * Copyright (C) 2009 NetUP Inc.
 * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
 * Copyright (C) 2009 Abylay Ospan <aospan@netup.ru>
 *
 * 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 "cx23885.h"
#include "netup-init.h"


static void i2c_av_write(struct i2c_adapter *i2c, u16 reg, u8 val) { int ret; u8 buf[3]; struct i2c_msg msg = { .addr = 0x88 >> 1, .flags = 0, .buf = buf, .len = 3 }; buf[0] = reg >> 8; buf[1] = reg & 0xff; buf[2] = val; ret = i2c_transfer(i2c, &msg, 1); if (ret != 1) pr_err("%s: i2c write error!\n", __func__); }

Contributors

PersonTokensPropCommitsCommitProp
Abylay Ospan10399.04%150.00%
Mauro Carvalho Chehab10.96%150.00%
Total104100.00%2100.00%


static void i2c_av_write4(struct i2c_adapter *i2c, u16 reg, u32 val) { int ret; u8 buf[6]; struct i2c_msg msg = { .addr = 0x88 >> 1, .flags = 0, .buf = buf, .len = 6 }; buf[0] = reg >> 8; buf[1] = reg & 0xff; buf[2] = val & 0xff; buf[3] = (val >> 8) & 0xff; buf[4] = (val >> 16) & 0xff; buf[5] = val >> 24; ret = i2c_transfer(i2c, &msg, 1); if (ret != 1) pr_err("%s: i2c write error!\n", __func__); }

Contributors

PersonTokensPropCommitsCommitProp
Abylay Ospan14099.29%150.00%
Mauro Carvalho Chehab10.71%150.00%
Total141100.00%2100.00%


static u8 i2c_av_read(struct i2c_adapter *i2c, u16 reg) { int ret; u8 buf[2]; struct i2c_msg msg = { .addr = 0x88 >> 1, .flags = 0, .buf = buf, .len = 2 }; buf[0] = reg >> 8; buf[1] = reg & 0xff; ret = i2c_transfer(i2c, &msg, 1); if (ret != 1) pr_err("%s: i2c write error!\n", __func__); msg.flags = I2C_M_RD; msg.len = 1; ret = i2c_transfer(i2c, &msg, 1); if (ret != 1) pr_err("%s: i2c read error!\n", __func__); return buf[0]; }

Contributors

PersonTokensPropCommitsCommitProp
Abylay Ospan13598.54%150.00%
Mauro Carvalho Chehab21.46%150.00%
Total137100.00%2100.00%


static void i2c_av_and_or(struct i2c_adapter *i2c, u16 reg, unsigned and_mask, u8 or_value) { i2c_av_write(i2c, reg, (i2c_av_read(i2c, reg) & and_mask) | or_value); }

Contributors

PersonTokensPropCommitsCommitProp
Abylay Ospan40100.00%1100.00%
Total40100.00%1100.00%

/* set 27MHz on AUX_CLK */
void netup_initialize(struct cx23885_dev *dev) { struct cx23885_i2c *i2c_bus = &dev->i2c_bus[2]; struct i2c_adapter *i2c = &i2c_bus->i2c_adap; /* Stop microcontroller */ i2c_av_and_or(i2c, 0x803, ~0x10, 0x00); /* Aux PLL frac for 27 MHz */ i2c_av_write4(i2c, 0x114, 0xea0eb3); /* Aux PLL int for 27 MHz */ i2c_av_write4(i2c, 0x110, 0x090319); /* start microcontroller */ i2c_av_and_or(i2c, 0x803, ~0x10, 0x10); }

Contributors

PersonTokensPropCommitsCommitProp
Abylay Ospan79100.00%1100.00%
Total79100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Abylay Ospan50198.43%125.00%
Mauro Carvalho Chehab71.38%250.00%
Hans Verkuil10.20%125.00%
Total509100.00%4100.00%
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