drivers/media/pci/mantis/mantis_evm.c

   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"
  36 #include "mantis_hif.h"
  37 #include "mantis_reg.h"
  38
  39 static void mantis_hifevm_work(struct work_struct *work)
  40 {
  41         struct mantis_ca *ca = container_of(work, struct mantis_ca, hif_evm_work);
  42         struct mantis_pci *mantis = ca->ca_priv;
  43
  44         u32 gpif_stat;
  45
  46         gpif_stat = mmread(MANTIS_GPIF_STATUS);
  47
  48         if (gpif_stat & MANTIS_GPIF_DETSTAT) {
  49                 if (gpif_stat & MANTIS_CARD_PLUGIN) {
  50                         dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): CAM Plugin", mantis->num);
  51                         mmwrite(0xdada0000, MANTIS_CARD_RESET);
  52                         mantis_event_cam_plugin(ca);
  53                         dvb_ca_en50221_camchange_irq(&ca->en50221,
  54                                                      0,
  55                                                      DVB_CA_EN50221_CAMCHANGE_INSERTED);
  56                 }
  57         } else {
  58                 if (gpif_stat & MANTIS_CARD_PLUGOUT) {
  59                         dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): CAM Unplug", mantis->num);
  60                         mmwrite(0xdada0000, MANTIS_CARD_RESET);
  61                         mantis_event_cam_unplug(ca);
  62                         dvb_ca_en50221_camchange_irq(&ca->en50221,
  63                                                      0,
  64                                                      DVB_CA_EN50221_CAMCHANGE_REMOVED);
  65                 }
  66         }
  67
  68         if (mantis->gpif_status & MANTIS_GPIF_EXTIRQ)
  69                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Ext IRQ", mantis->num);
  70
  71         if (mantis->gpif_status & MANTIS_SBUF_WSTO)
  72                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Timeout", mantis->num);
  73
  74         if (mantis->gpif_status & MANTIS_GPIF_OTHERR)
  75                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Alignment Error", mantis->num);
  76
  77         if (gpif_stat & MANTIS_SBUF_OVFLW)
  78                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Overflow", mantis->num);
  79
  80         if (gpif_stat & MANTIS_GPIF_BRRDY)
  81                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Read Ready", mantis->num);
  82
  83         if (gpif_stat & MANTIS_GPIF_INTSTAT)
  84                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): GPIF IRQ", mantis->num);
  85
  86         if (gpif_stat & MANTIS_SBUF_EMPTY)
  87                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Empty", mantis->num);
  88
  89         if (gpif_stat & MANTIS_SBUF_OPDONE) {
  90                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer operation complete", mantis->num);
  91                 ca->sbuf_status = MANTIS_SBUF_DATA_AVAIL;
  92                 ca->hif_event = MANTIS_SBUF_OPDONE;
  93                 wake_up(&ca->hif_opdone_wq);
  94         }
  95 }
  96
  97 int mantis_evmgr_init(struct mantis_ca *ca)
  98 {
  99         struct mantis_pci *mantis = ca->ca_priv;
 100
 101         dprintk(MANTIS_DEBUG, 1, "Initializing Mantis Host I/F Event manager");
 102         INIT_WORK(&ca->hif_evm_work, mantis_hifevm_work);
 103         mantis_pcmcia_init(ca);
 104         schedule_work(&ca->hif_evm_work);
 105         mantis_hif_init(ca);
 106         return 0;
 107 }
 108
 109 void mantis_evmgr_exit(struct mantis_ca *ca)
 110 {
 111         struct mantis_pci *mantis = ca->ca_priv;
 112
 113         dprintk(MANTIS_DEBUG, 1, "Mantis Host I/F Event manager exiting");
 114         flush_work(&ca->hif_evm_work);
 115         mantis_hif_exit(ca);
 116         mantis_pcmcia_exit(ca);
 117 }