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" /* temporary due to physical layer stuff */
36 #include "mantis_reg.h"
37
38 /*
39 * If Slot state is already PLUG_IN event and we are called
40 * again, definitely it is jitter alone
41 */
mantis_event_cam_plugin(struct mantis_ca * ca)42 void mantis_event_cam_plugin(struct mantis_ca *ca)
43 {
44 struct mantis_pci *mantis = ca->ca_priv;
45
46 u32 gpif_irqcfg;
47
48 if (ca->slot_state == MODULE_XTRACTED) {
49 dprintk(MANTIS_DEBUG, 1, "Event: CAM Plugged IN: Adapter(%d) Slot(0)", mantis->num);
50 udelay(50);
51 mmwrite(0xda000000, MANTIS_CARD_RESET);
52 gpif_irqcfg = mmread(MANTIS_GPIF_IRQCFG);
53 gpif_irqcfg |= MANTIS_MASK_PLUGOUT;
54 gpif_irqcfg &= ~MANTIS_MASK_PLUGIN;
55 mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
56 udelay(500);
57 ca->slot_state = MODULE_INSERTED;
58 }
59 udelay(100);
60 }
61
62 /*
63 * If Slot state is already UN_PLUG event and we are called
64 * again, definitely it is jitter alone
65 */
mantis_event_cam_unplug(struct mantis_ca * ca)66 void mantis_event_cam_unplug(struct mantis_ca *ca)
67 {
68 struct mantis_pci *mantis = ca->ca_priv;
69
70 u32 gpif_irqcfg;
71
72 if (ca->slot_state == MODULE_INSERTED) {
73 dprintk(MANTIS_DEBUG, 1, "Event: CAM Unplugged: Adapter(%d) Slot(0)", mantis->num);
74 udelay(50);
75 mmwrite(0x00da0000, MANTIS_CARD_RESET);
76 gpif_irqcfg = mmread(MANTIS_GPIF_IRQCFG);
77 gpif_irqcfg |= MANTIS_MASK_PLUGIN;
78 gpif_irqcfg &= ~MANTIS_MASK_PLUGOUT;
79 mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
80 udelay(500);
81 ca->slot_state = MODULE_XTRACTED;
82 }
83 udelay(100);
84 }
85
mantis_pcmcia_init(struct mantis_ca * ca)86 int mantis_pcmcia_init(struct mantis_ca *ca)
87 {
88 struct mantis_pci *mantis = ca->ca_priv;
89
90 u32 gpif_stat, card_stat;
91
92 mantis_unmask_ints(mantis, MANTIS_INT_IRQ0);
93 gpif_stat = mmread(MANTIS_GPIF_STATUS);
94 card_stat = mmread(MANTIS_GPIF_IRQCFG);
95
96 if (gpif_stat & MANTIS_GPIF_DETSTAT) {
97 dprintk(MANTIS_DEBUG, 1, "CAM found on Adapter(%d) Slot(0)", mantis->num);
98 mmwrite(card_stat | MANTIS_MASK_PLUGOUT, MANTIS_GPIF_IRQCFG);
99 ca->slot_state = MODULE_INSERTED;
100 dvb_ca_en50221_camchange_irq(&ca->en50221,
101 0,
102 DVB_CA_EN50221_CAMCHANGE_INSERTED);
103 } else {
104 dprintk(MANTIS_DEBUG, 1, "Empty Slot on Adapter(%d) Slot(0)", mantis->num);
105 mmwrite(card_stat | MANTIS_MASK_PLUGIN, MANTIS_GPIF_IRQCFG);
106 ca->slot_state = MODULE_XTRACTED;
107 dvb_ca_en50221_camchange_irq(&ca->en50221,
108 0,
109 DVB_CA_EN50221_CAMCHANGE_REMOVED);
110 }
111
112 return 0;
113 }
114
mantis_pcmcia_exit(struct mantis_ca * ca)115 void mantis_pcmcia_exit(struct mantis_ca *ca)
116 {
117 struct mantis_pci *mantis = ca->ca_priv;
118
119 mmwrite(mmread(MANTIS_GPIF_STATUS) & (~MANTIS_CARD_PLUGOUT | ~MANTIS_CARD_PLUGIN), MANTIS_GPIF_STATUS);
120 mantis_mask_ints(mantis, MANTIS_INT_IRQ0);
121 }
122