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