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
  23#include <linux/signal.h>
  24#include <linux/sched.h>
  25#include <linux/interrupt.h>
  26#include <asm/io.h>
  27
  28#include "dmxdev.h"
  29#include "dvbdev.h"
  30#include "dvb_demux.h"
  31#include "dvb_frontend.h"
  32#include "dvb_net.h"
  33
  34#include "mantis_common.h"
  35#include "mantis_link.h" /* temporary due to physical layer stuff */
  36#include "mantis_reg.h"
  37
  38/*
  39 * If Slot state is already PLUG_IN event and we are called
  40 * again, definitely it is jitter alone
  41 */
  42void mantis_event_cam_plugin(struct mantis_ca *ca)
  43{
  44        struct mantis_pci *mantis = ca->ca_priv;
  45
  46        u32 gpif_irqcfg;
  47
  48        if (ca->slot_state == MODULE_XTRACTED) {
  49                dprintk(MANTIS_DEBUG, 1, "Event: CAM Plugged IN: Adapter(%d) Slot(0)", mantis->num);
  50                udelay(50);
  51                mmwrite(0xda000000, MANTIS_CARD_RESET);
  52                gpif_irqcfg  = mmread(MANTIS_GPIF_IRQCFG);
  53                gpif_irqcfg |= MANTIS_MASK_PLUGOUT;
  54                gpif_irqcfg &= ~MANTIS_MASK_PLUGIN;
  55                mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
  56                udelay(500);
  57                ca->slot_state = MODULE_INSERTED;
  58        }
  59        udelay(100);
  60}
  61
  62/*
  63 * If Slot state is already UN_PLUG event and we are called
  64 * again, definitely it is jitter alone
  65 */
  66void mantis_event_cam_unplug(struct mantis_ca *ca)
  67{
  68        struct mantis_pci *mantis = ca->ca_priv;
  69
  70        u32 gpif_irqcfg;
  71
  72        if (ca->slot_state == MODULE_INSERTED) {
  73                dprintk(MANTIS_DEBUG, 1, "Event: CAM Unplugged: Adapter(%d) Slot(0)", mantis->num);
  74                udelay(50);
  75                mmwrite(0x00da0000, MANTIS_CARD_RESET);
  76                gpif_irqcfg  = mmread(MANTIS_GPIF_IRQCFG);
  77                gpif_irqcfg |= MANTIS_MASK_PLUGIN;
  78                gpif_irqcfg &= ~MANTIS_MASK_PLUGOUT;
  79                mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
  80                udelay(500);
  81                ca->slot_state = MODULE_XTRACTED;
  82        }
  83        udelay(100);
  84}
  85
  86int mantis_pcmcia_init(struct mantis_ca *ca)
  87{
  88        struct mantis_pci *mantis = ca->ca_priv;
  89
  90        u32 gpif_stat, card_stat;
  91
  92        mmwrite(mmread(MANTIS_INT_MASK) | MANTIS_INT_IRQ0, MANTIS_INT_MASK);
  93        gpif_stat = mmread(MANTIS_GPIF_STATUS);
  94        card_stat = mmread(MANTIS_GPIF_IRQCFG);
  95
  96        if (gpif_stat & MANTIS_GPIF_DETSTAT) {
  97                dprintk(MANTIS_DEBUG, 1, "CAM found on Adapter(%d) Slot(0)", mantis->num);
  98                mmwrite(card_stat | MANTIS_MASK_PLUGOUT, MANTIS_GPIF_IRQCFG);
  99                ca->slot_state = MODULE_INSERTED;
 100                dvb_ca_en50221_camchange_irq(&ca->en50221,
 101                                             0,
 102                                             DVB_CA_EN50221_CAMCHANGE_INSERTED);
 103        } else {
 104                dprintk(MANTIS_DEBUG, 1, "Empty Slot on Adapter(%d) Slot(0)", mantis->num);
 105                mmwrite(card_stat | MANTIS_MASK_PLUGIN, MANTIS_GPIF_IRQCFG);
 106                ca->slot_state = MODULE_XTRACTED;
 107                dvb_ca_en50221_camchange_irq(&ca->en50221,
 108                                             0,
 109                                             DVB_CA_EN50221_CAMCHANGE_REMOVED);
 110        }
 111
 112        return 0;
 113}
 114
 115void mantis_pcmcia_exit(struct mantis_ca *ca)
 116{
 117        struct mantis_pci *mantis = ca->ca_priv;
 118
 119        mmwrite(mmread(MANTIS_GPIF_STATUS) & (~MANTIS_CARD_PLUGOUT | ~MANTIS_CARD_PLUGIN), MANTIS_GPIF_STATUS);
 120        mmwrite(mmread(MANTIS_INT_MASK) & ~MANTIS_INT_IRQ0, MANTIS_INT_MASK);
 121}
 122