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" /* temporary due to physical layer stuff */ |
24 | #include "mantis_reg.h" |
25 | |
26 | /* |
27 | * If Slot state is already PLUG_IN event and we are called |
28 | * again, definitely it is jitter alone |
29 | */ |
30 | void mantis_event_cam_plugin(struct mantis_ca *ca) |
31 | { |
32 | struct mantis_pci *mantis = ca->ca_priv; |
33 | |
34 | u32 gpif_irqcfg; |
35 | |
36 | if (ca->slot_state == MODULE_XTRACTED) { |
37 | dprintk(MANTIS_DEBUG, 1, "Event: CAM Plugged IN: Adapter(%d) Slot(0)" , mantis->num); |
38 | udelay(50); |
39 | mmwrite(0xda000000, MANTIS_CARD_RESET); |
40 | gpif_irqcfg = mmread(MANTIS_GPIF_IRQCFG); |
41 | gpif_irqcfg |= MANTIS_MASK_PLUGOUT; |
42 | gpif_irqcfg &= ~MANTIS_MASK_PLUGIN; |
43 | mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG); |
44 | udelay(500); |
45 | ca->slot_state = MODULE_INSERTED; |
46 | } |
47 | udelay(100); |
48 | } |
49 | |
50 | /* |
51 | * If Slot state is already UN_PLUG event and we are called |
52 | * again, definitely it is jitter alone |
53 | */ |
54 | void mantis_event_cam_unplug(struct mantis_ca *ca) |
55 | { |
56 | struct mantis_pci *mantis = ca->ca_priv; |
57 | |
58 | u32 gpif_irqcfg; |
59 | |
60 | if (ca->slot_state == MODULE_INSERTED) { |
61 | dprintk(MANTIS_DEBUG, 1, "Event: CAM Unplugged: Adapter(%d) Slot(0)" , mantis->num); |
62 | udelay(50); |
63 | mmwrite(0x00da0000, MANTIS_CARD_RESET); |
64 | gpif_irqcfg = mmread(MANTIS_GPIF_IRQCFG); |
65 | gpif_irqcfg |= MANTIS_MASK_PLUGIN; |
66 | gpif_irqcfg &= ~MANTIS_MASK_PLUGOUT; |
67 | mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG); |
68 | udelay(500); |
69 | ca->slot_state = MODULE_XTRACTED; |
70 | } |
71 | udelay(100); |
72 | } |
73 | |
74 | int mantis_pcmcia_init(struct mantis_ca *ca) |
75 | { |
76 | struct mantis_pci *mantis = ca->ca_priv; |
77 | |
78 | u32 gpif_stat, card_stat; |
79 | |
80 | mantis_unmask_ints(mantis, MANTIS_INT_IRQ0); |
81 | gpif_stat = mmread(MANTIS_GPIF_STATUS); |
82 | card_stat = mmread(MANTIS_GPIF_IRQCFG); |
83 | |
84 | if (gpif_stat & MANTIS_GPIF_DETSTAT) { |
85 | dprintk(MANTIS_DEBUG, 1, "CAM found on Adapter(%d) Slot(0)" , mantis->num); |
86 | mmwrite(card_stat | MANTIS_MASK_PLUGOUT, MANTIS_GPIF_IRQCFG); |
87 | ca->slot_state = MODULE_INSERTED; |
88 | dvb_ca_en50221_camchange_irq(pubca: &ca->en50221, |
89 | slot: 0, |
90 | DVB_CA_EN50221_CAMCHANGE_INSERTED); |
91 | } else { |
92 | dprintk(MANTIS_DEBUG, 1, "Empty Slot on Adapter(%d) Slot(0)" , mantis->num); |
93 | mmwrite(card_stat | MANTIS_MASK_PLUGIN, MANTIS_GPIF_IRQCFG); |
94 | ca->slot_state = MODULE_XTRACTED; |
95 | dvb_ca_en50221_camchange_irq(pubca: &ca->en50221, |
96 | slot: 0, |
97 | DVB_CA_EN50221_CAMCHANGE_REMOVED); |
98 | } |
99 | |
100 | return 0; |
101 | } |
102 | |
103 | void mantis_pcmcia_exit(struct mantis_ca *ca) |
104 | { |
105 | struct mantis_pci *mantis = ca->ca_priv; |
106 | |
107 | mmwrite(mmread(MANTIS_GPIF_STATUS) & (~MANTIS_CARD_PLUGOUT | ~MANTIS_CARD_PLUGIN), MANTIS_GPIF_STATUS); |
108 | mantis_mask_ints(mantis, MANTIS_INT_IRQ0); |
109 | } |
110 | |