drivers/media/dvb/mantis/mantis_ca.c

   1 /*
   2         Mantis PCI bridge driver
   3
   4         Copyright (C) 2005, 2006 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 "mantis_common.h"
  22 #include "mantis_link.h"
  23 #include "mantis_hif.h"
  24
  25 static int mantis_ca_read_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr)
  26 {
  27         struct mantis_ca *ca = en50221->data;
  28         struct mantis_pci *mantis = ca->ca_priv;
  29
  30         dprintk(verbose, MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Read", slot);
  31
  32         if (slot != 0)
  33                 return -EINVAL;
  34
  35         return mantis_hif_read_mem(ca, addr);
  36 }
  37
  38 static int mantis_ca_write_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr, u8 data)
  39 {
  40         struct mantis_ca *ca = en50221->data;
  41         struct mantis_pci *mantis = ca->ca_priv;
  42
  43         dprintk(verbose, MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Write", slot);
  44
  45         if (slot != 0)
  46                 return -EINVAL;
  47
  48         return mantis_hif_write_mem(ca, addr, data);
  49 }
  50
  51 static int mantis_ca_read_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr)
  52 {
  53         struct mantis_ca *ca = en50221->data;
  54         struct mantis_pci *mantis = ca->ca_priv;
  55
  56         dprintk(verbose, MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Read", slot);
  57
  58         if (slot != 0)
  59                 return -EINVAL;
  60
  61         return mantis_hif_read_iom(ca, addr);
  62 }
  63
  64 static int mantis_ca_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr, u8 data)
  65 {
  66         struct mantis_ca *ca = en50221->data;
  67         struct mantis_pci *mantis = ca->ca_priv;
  68
  69         dprintk(verbose, MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Write", slot);
  70
  71         if (slot != 0)
  72                 return -EINVAL;
  73
  74         return mantis_hif_write_iom(ca, addr, data);
  75 }
  76
  77 static int mantis_ca_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
  78 {
  79         struct mantis_ca *ca = en50221->data;
  80         struct mantis_pci *mantis = ca->ca_priv;
  81
  82         dprintk(verbose, MANTIS_DEBUG, 1, "Slot(%d): Slot RESET", slot);
  83         udelay(500); /* Wait.. */
  84         mmwrite(0xda, MANTIS_PCMCIA_RESET); /* Leading edge assert */
  85         udelay(500);
  86         mmwrite(0x00, MANTIS_PCMCIA_RESET); /* Trailing edge deassert */
  87         msleep(1000);
  88
  89         return 0;
  90 }
  91
  92 static int mantis_ca_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
  93 {
  94         struct mantis_ca *ca = en50221->data;
  95         struct mantis_pci *mantis = ca->ca_priv;
  96
  97         dprintk(verbose, MANTIS_DEBUG, 1, "Slot(%d): Slot shutdown", slot);
  98
  99         return 0;
 100 }
 101
 102 static int mantis_ts_control(struct dvb_ca_en50221 *en50221, int slot)
 103 {
 104         struct mantis_ca *ca = en50221->data;
 105         struct mantis_pci *mantis = ca->ca_priv;
 106
 107         dprintk(verbose, MANTIS_DEBUG, 1, "Slot(%d): TS control", slot);
 108         mantis_set_direction(mantis, 1); /* Enable TS through CAM */
 109
 110         return 0;
 111 }
 112
 113 static int mantis_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open)
 114 {
 115         struct mantis_ca *ca = en50221->data;
 116         struct mantis_pci *mantis = ca->ca_priv;
 117
 118         dprintk(verbose, MANTIS_DEBUG, 1, "Slot(%d): Poll Slot status", slot);
 119
 120         if (ca->slot_state == MODULE_INSERTED)
 121                 return DVB_CA_EN50221_POLL_CAM_PRESENT | DVB_CA_EN50221_POLL_CAM_READY;
 122
 123         return 0;
 124 }
 125
 126 int mantis_ca_init(struct mantis_pci *mantis)
 127 {
 128         struct dvb_adapter *dvb_adapter = &mantis->dvb_adapter;
 129         struct mantis_ca *ca;
 130         int ca_flags = 0, result;
 131
 132         dprintk(verbose, MANTIS_DEBUG, 1, "Initializing Mantis CA");
 133         if (!(ca = kzalloc(sizeof (struct mantis_ca), GFP_KERNEL))) {
 134                 dprintk(verbose, MANTIS_ERROR, 1, "Out of memory!, exiting ..");
 135                 result = -ENOMEM;
 136                 goto err;
 137         }
 138
 139         ca->ca_priv = mantis;
 140         mantis->mantis_ca = ca;
 141
 142         /* register CA interface */
 143         ca->en50221.owner               = THIS_MODULE;
 144         ca->en50221.read_attribute_mem  = mantis_ca_read_attr_mem;
 145         ca->en50221.write_attribute_mem = mantis_ca_write_attr_mem;
 146         ca->en50221.read_cam_control    = mantis_ca_read_cam_ctl;
 147         ca->en50221.write_cam_control   = mantis_ca_write_cam_ctl;
 148         ca->en50221.slot_reset          = mantis_ca_slot_reset;
 149         ca->en50221.slot_shutdown       = mantis_ca_slot_shutdown;
 150         ca->en50221.slot_ts_enable      = mantis_ts_control;
 151         ca->en50221.poll_slot_status    = mantis_slot_status;
 152         ca->en50221.data                = ca;
 153
 154         dprintk(verbose, MANTIS_ERROR, 1, "Registering EN50221 device");
 155         if ((result = dvb_ca_en50221_init(dvb_adapter, &ca->en50221, ca_flags, 1)) != 0) {
 156                 dprintk(verbose, MANTIS_ERROR, 1, "EN50221: Initialization failed");
 157                 goto err;
 158         }
 159         dprintk(verbose, MANTIS_ERROR, 1, "Registered EN50221 device");
 160         mantis_evmgr_init(ca);
 161         return 0;
 162 err:
 163         kfree(ca);
 164         return result;
 165 }
 166
 167 void mantis_ca_exit(struct mantis_pci *mantis)
 168 {
 169         struct mantis_ca *ca = mantis->mantis_ca;
 170
 171         dprintk(verbose, MANTIS_DEBUG, 1, "Mantis CA exit");
 172
 173         mantis_evmgr_exit(ca);
 174         dprintk(verbose, MANTIS_ERROR, 1, "Unregistering EN50221 device");
 175         dvb_ca_en50221_release(&ca->en50221);
 176
 177         kfree(ca);
 178 }