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 */
mantis_event_cam_plugin(struct mantis_ca * ca)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 */
mantis_event_cam_unplug(struct mantis_ca * ca)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
mantis_pcmcia_init(struct mantis_ca * ca)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(&ca->en50221,
89 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(&ca->en50221,
96 0,
97 DVB_CA_EN50221_CAMCHANGE_REMOVED);
98 }
99
100 return 0;
101 }
102
mantis_pcmcia_exit(struct mantis_ca * ca)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