netup-init.c

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/*
 * netup-init.c
 *
 * NetUP Dual DVB-S2 CI driver
 *
 * Copyright (C) 2009 NetUP Inc.
 * Copyright (C) 2009 Igor M. Liplianin <[email protected]>
 * Copyright (C) 2009 Abylay Ospan <[email protected]>
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "cx23885.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)
        printk(KERN_ERR "%s: i2c write error!\n", __func__);
}

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)
        printk(KERN_ERR "%s: i2c write error!\n", __func__);
}

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)
        printk(KERN_ERR "%s: i2c write error!\n", __func__);

    msg.flags = I2C_M_RD;
    msg.len = 1;

    ret = i2c_transfer(i2c, &msg, 1);

    if (ret != 1)
        printk(KERN_ERR "%s: i2c read error!\n", __func__);

    return buf[0];
}

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);
}
/* 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);
}