LXR linux/drivers/media/pci/mantis/mantis

   1/*
   2        Mantis PCI bridge driver
   3
   4        Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   5
   6        This program is free software; you can redistribute it and/or modify
   7        it under the terms of the GNU General Public License as published by
   8        the Free Software Foundation; either version 2 of the License, or
   9        (at your option) any later version.
  10
  11        This program is distributed in the hope that it will be useful,
  12        but WITHOUT ANY WARRANTY; without even the implied warranty of
  13        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14        GNU General Public License for more details.
  15
  16        You should have received a copy of the GNU General Public License
  17        along with this program; if not, write to the Free Software
  18        Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19*/
  20
  21#include <linux/kernel.h>
  22#include <linux/i2c.h>
  23
  24#include <linux/signal.h>
  25#include <linux/sched.h>
  26#include <linux/interrupt.h>
  27#include <asm/io.h>
  28
  29#include "dmxdev.h"
  30#include "dvbdev.h"
  31#include "dvb_demux.h"
  32#include "dvb_frontend.h"
  33#include "dvb_net.h"
  34
  35#include "mantis_common.h"
  36#include "mantis_reg.h"
  37#include "mantis_ioc.h"
  38
  39static int read_eeprom_bytes(struct mantis_pci *mantis, u8 reg, u8 *data, u8 length)
  40{
  41        struct i2c_adapter *adapter = &mantis->adapter;
  42        int err;
  43        u8 buf = reg;
  44
  45        struct i2c_msg msg[] = {
  46                { .addr = 0x50, .flags = 0, .buf = &buf, .len = 1 },
  47                { .addr = 0x50, .flags = I2C_M_RD, .buf = data, .len = length },
  48        };
  49
  50        err = i2c_transfer(adapter, msg, 2);
  51        if (err < 0) {
  52                dprintk(MANTIS_ERROR, 1, "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >",
  53                        err, data[0], data[1]);
  54
  55                return err;
  56        }
  57
  58        return 0;
  59}
  60int mantis_get_mac(struct mantis_pci *mantis)
  61{
  62        int err;
  63        u8 mac_addr[6] = {0};
  64
  65        err = read_eeprom_bytes(mantis, 0x08, mac_addr, 6);
  66        if (err < 0) {
  67                dprintk(MANTIS_ERROR, 1, "ERROR: Mantis EEPROM read error <%d>", err);
  68
  69                return err;
  70        }
  71
  72        dprintk(MANTIS_ERROR, 0, "    MAC Address=[%pM]\n", mac_addr);
  73
  74        return 0;
  75}
  76EXPORT_SYMBOL_GPL(mantis_get_mac);
  77
  78/* Turn the given bit on or off. */
  79void mantis_gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
  80{
  81        u32 cur;
  82
  83        dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value);
  84        cur = mmread(MANTIS_GPIF_ADDR);
  85        if (value)
  86                mantis->gpio_status = cur | (1 << bitpos);
  87        else
  88                mantis->gpio_status = cur & (~(1 << bitpos));
  89
  90        dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status);
  91        mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
  92        mmwrite(0x00, MANTIS_GPIF_DOUT);
  93}
  94EXPORT_SYMBOL_GPL(mantis_gpio_set_bits);
  95
  96int mantis_stream_control(struct mantis_pci *mantis, enum mantis_stream_control stream_ctl)
  97{
  98        u32 reg;
  99
 100        reg = mmread(MANTIS_CONTROL);
 101        switch (stream_ctl) {
 102        case STREAM_TO_HIF:
 103                dprintk(MANTIS_DEBUG, 1, "Set stream to HIF");
 104                reg &= 0xff - MANTIS_BYPASS;
 105                mmwrite(reg, MANTIS_CONTROL);
 106                reg |= MANTIS_BYPASS;
 107                mmwrite(reg, MANTIS_CONTROL);
 108                break;
 109
 110        case STREAM_TO_CAM:
 111                dprintk(MANTIS_DEBUG, 1, "Set stream to CAM");
 112                reg |= MANTIS_BYPASS;
 113                mmwrite(reg, MANTIS_CONTROL);
 114                reg &= 0xff - MANTIS_BYPASS;
 115                mmwrite(reg, MANTIS_CONTROL);
 116                break;
 117        default:
 118                dprintk(MANTIS_ERROR, 1, "Unknown MODE <%02x>", stream_ctl);
 119                return -1;
 120        }
 121
 122        return 0;
 123}
 124EXPORT_SYMBOL_GPL(mantis_stream_control);
 125