drivers/media/pci/mantis/mantis_evm.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3         Mantis PCI bridge driver
   4
   5         Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   6
   7 */
   8
   9 #include <linux/kernel.h>
  10
  11 #include <linux/signal.h>
  12 #include <linux/sched.h>
  13 #include <linux/interrupt.h>
  14 #include <asm/io.h>
  15
  16 #include <media/dmxdev.h>
  17 #include <media/dvbdev.h>
  18 #include <media/dvb_demux.h>
  19 #include <media/dvb_frontend.h>
  20 #include <media/dvb_net.h>
  21
  22 #include "mantis_common.h"
  23 #include "mantis_link.h"
  24 #include "mantis_hif.h"
  25 #include "mantis_reg.h"
  26
  27 static void mantis_hifevm_work(struct work_struct *work)
  28 {
  29         struct mantis_ca *ca = container_of(work, struct mantis_ca, hif_evm_work);
  30         struct mantis_pci *mantis = ca->ca_priv;
  31
  32         u32 gpif_stat;
  33
  34         gpif_stat = mmread(MANTIS_GPIF_STATUS);
  35
  36         if (gpif_stat & MANTIS_GPIF_DETSTAT) {
  37                 if (gpif_stat & MANTIS_CARD_PLUGIN) {
  38                         dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): CAM Plugin", mantis->num);
  39                         mmwrite(0xdada0000, MANTIS_CARD_RESET);
  40                         mantis_event_cam_plugin(ca);
  41                         dvb_ca_en50221_camchange_irq(&ca->en50221,
  42                                                      0,
  43                                                      DVB_CA_EN50221_CAMCHANGE_INSERTED);
  44                 }
  45         } else {
  46                 if (gpif_stat & MANTIS_CARD_PLUGOUT) {
  47                         dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): CAM Unplug", mantis->num);
  48                         mmwrite(0xdada0000, MANTIS_CARD_RESET);
  49                         mantis_event_cam_unplug(ca);
  50                         dvb_ca_en50221_camchange_irq(&ca->en50221,
  51                                                      0,
  52                                                      DVB_CA_EN50221_CAMCHANGE_REMOVED);
  53                 }
  54         }
  55
  56         if (mantis->gpif_status & MANTIS_GPIF_EXTIRQ)
  57                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Ext IRQ", mantis->num);
  58
  59         if (mantis->gpif_status & MANTIS_SBUF_WSTO)
  60                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Timeout", mantis->num);
  61
  62         if (mantis->gpif_status & MANTIS_GPIF_OTHERR)
  63                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Alignment Error", mantis->num);
  64
  65         if (gpif_stat & MANTIS_SBUF_OVFLW)
  66                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Overflow", mantis->num);
  67
  68         if (gpif_stat & MANTIS_GPIF_BRRDY)
  69                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Read Ready", mantis->num);
  70
  71         if (gpif_stat & MANTIS_GPIF_INTSTAT)
  72                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): GPIF IRQ", mantis->num);
  73
  74         if (gpif_stat & MANTIS_SBUF_EMPTY)
  75                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer Empty", mantis->num);
  76
  77         if (gpif_stat & MANTIS_SBUF_OPDONE) {
  78                 dprintk(MANTIS_DEBUG, 1, "Event Mgr: Adapter(%d) Slot(0): Smart Buffer operation complete", mantis->num);
  79                 ca->sbuf_status = MANTIS_SBUF_DATA_AVAIL;
  80                 ca->hif_event = MANTIS_SBUF_OPDONE;
  81                 wake_up(&ca->hif_opdone_wq);
  82         }
  83 }
  84
  85 int mantis_evmgr_init(struct mantis_ca *ca)
  86 {
  87         struct mantis_pci *mantis = ca->ca_priv;
  88
  89         dprintk(MANTIS_DEBUG, 1, "Initializing Mantis Host I/F Event manager");
  90         INIT_WORK(&ca->hif_evm_work, mantis_hifevm_work);
  91         mantis_pcmcia_init(ca);
  92         schedule_work(&ca->hif_evm_work);
  93         mantis_hif_init(ca);
  94         return 0;
  95 }
  96
  97 void mantis_evmgr_exit(struct mantis_ca *ca)
  98 {
  99         struct mantis_pci *mantis = ca->ca_priv;
 100
 101         dprintk(MANTIS_DEBUG, 1, "Mantis Host I/F Event manager exiting");
 102         flush_work(&ca->hif_evm_work);
 103         mantis_hif_exit(ca);
 104         mantis_pcmcia_exit(ca);
 105 }