Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / media / pci / mantis / mantis_ca.c
blob4f0ba457c7e5ae5b32989075c45d6c1f7563565c
1 /*
2 Mantis PCI bridge driver
4 Copyright (C) Manu Abraham (abraham.manu@gmail.com)
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.
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.
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.
21 #include <linux/signal.h>
22 #include <linux/slab.h>
23 #include <linux/sched.h>
24 #include <linux/interrupt.h>
25 #include <asm/io.h>
27 #include <media/dmxdev.h>
28 #include <media/dvbdev.h>
29 #include <media/dvb_demux.h>
30 #include <media/dvb_frontend.h>
31 #include <media/dvb_net.h>
33 #include "mantis_common.h"
34 #include "mantis_link.h"
35 #include "mantis_hif.h"
36 #include "mantis_reg.h"
38 #include "mantis_ca.h"
40 static int mantis_ca_read_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr)
42 struct mantis_ca *ca = en50221->data;
43 struct mantis_pci *mantis = ca->ca_priv;
45 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Read", slot);
47 if (slot != 0)
48 return -EINVAL;
50 return mantis_hif_read_mem(ca, addr);
53 static int mantis_ca_write_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr, u8 data)
55 struct mantis_ca *ca = en50221->data;
56 struct mantis_pci *mantis = ca->ca_priv;
58 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Write", slot);
60 if (slot != 0)
61 return -EINVAL;
63 return mantis_hif_write_mem(ca, addr, data);
66 static int mantis_ca_read_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr)
68 struct mantis_ca *ca = en50221->data;
69 struct mantis_pci *mantis = ca->ca_priv;
71 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Read", slot);
73 if (slot != 0)
74 return -EINVAL;
76 return mantis_hif_read_iom(ca, addr);
79 static int mantis_ca_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr, u8 data)
81 struct mantis_ca *ca = en50221->data;
82 struct mantis_pci *mantis = ca->ca_priv;
84 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Write", slot);
86 if (slot != 0)
87 return -EINVAL;
89 return mantis_hif_write_iom(ca, addr, data);
92 static int mantis_ca_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
94 struct mantis_ca *ca = en50221->data;
95 struct mantis_pci *mantis = ca->ca_priv;
97 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Slot RESET", slot);
98 udelay(500); /* Wait.. */
99 mmwrite(0xda, MANTIS_PCMCIA_RESET); /* Leading edge assert */
100 udelay(500);
101 mmwrite(0x00, MANTIS_PCMCIA_RESET); /* Trailing edge deassert */
102 msleep(1000);
103 dvb_ca_en50221_camready_irq(&ca->en50221, 0);
105 return 0;
108 static int mantis_ca_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
110 struct mantis_ca *ca = en50221->data;
111 struct mantis_pci *mantis = ca->ca_priv;
113 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Slot shutdown", slot);
115 return 0;
118 static int mantis_ts_control(struct dvb_ca_en50221 *en50221, int slot)
120 struct mantis_ca *ca = en50221->data;
121 struct mantis_pci *mantis = ca->ca_priv;
123 dprintk(MANTIS_DEBUG, 1, "Slot(%d): TS control", slot);
124 /* mantis_set_direction(mantis, 1); */ /* Enable TS through CAM */
126 return 0;
129 static int mantis_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open)
131 struct mantis_ca *ca = en50221->data;
132 struct mantis_pci *mantis = ca->ca_priv;
134 dprintk(MANTIS_DEBUG, 1, "Slot(%d): Poll Slot status", slot);
136 if (ca->slot_state == MODULE_INSERTED) {
137 dprintk(MANTIS_DEBUG, 1, "CA Module present and ready");
138 return DVB_CA_EN50221_POLL_CAM_PRESENT | DVB_CA_EN50221_POLL_CAM_READY;
139 } else {
140 dprintk(MANTIS_DEBUG, 1, "CA Module not present or not ready");
143 return 0;
146 int mantis_ca_init(struct mantis_pci *mantis)
148 struct dvb_adapter *dvb_adapter = &mantis->dvb_adapter;
149 struct mantis_ca *ca;
150 int ca_flags = 0, result;
152 dprintk(MANTIS_DEBUG, 1, "Initializing Mantis CA");
153 ca = kzalloc(sizeof(struct mantis_ca), GFP_KERNEL);
154 if (!ca) {
155 dprintk(MANTIS_ERROR, 1, "Out of memory!, exiting ..");
156 result = -ENOMEM;
157 goto err;
160 ca->ca_priv = mantis;
161 mantis->mantis_ca = ca;
162 ca_flags = DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE;
163 /* register CA interface */
164 ca->en50221.owner = THIS_MODULE;
165 ca->en50221.read_attribute_mem = mantis_ca_read_attr_mem;
166 ca->en50221.write_attribute_mem = mantis_ca_write_attr_mem;
167 ca->en50221.read_cam_control = mantis_ca_read_cam_ctl;
168 ca->en50221.write_cam_control = mantis_ca_write_cam_ctl;
169 ca->en50221.slot_reset = mantis_ca_slot_reset;
170 ca->en50221.slot_shutdown = mantis_ca_slot_shutdown;
171 ca->en50221.slot_ts_enable = mantis_ts_control;
172 ca->en50221.poll_slot_status = mantis_slot_status;
173 ca->en50221.data = ca;
175 mutex_init(&ca->ca_lock);
177 init_waitqueue_head(&ca->hif_data_wq);
178 init_waitqueue_head(&ca->hif_opdone_wq);
179 init_waitqueue_head(&ca->hif_write_wq);
181 dprintk(MANTIS_ERROR, 1, "Registering EN50221 device");
182 result = dvb_ca_en50221_init(dvb_adapter, &ca->en50221, ca_flags, 1);
183 if (result != 0) {
184 dprintk(MANTIS_ERROR, 1, "EN50221: Initialization failed <%d>", result);
185 goto err;
187 dprintk(MANTIS_ERROR, 1, "Registered EN50221 device");
188 mantis_evmgr_init(ca);
189 return 0;
190 err:
191 kfree(ca);
192 return result;
194 EXPORT_SYMBOL_GPL(mantis_ca_init);
196 void mantis_ca_exit(struct mantis_pci *mantis)
198 struct mantis_ca *ca = mantis->mantis_ca;
200 dprintk(MANTIS_DEBUG, 1, "Mantis CA exit");
201 if (!ca)
202 return;
204 mantis_evmgr_exit(ca);
205 dprintk(MANTIS_ERROR, 1, "Unregistering EN50221 device");
206 dvb_ca_en50221_release(&ca->en50221);
208 kfree(ca);
210 EXPORT_SYMBOL_GPL(mantis_ca_exit);