1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun Mantis PCI bridge driver
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun Copyright (C) Manu Abraham (abraham.manu@gmail.com)
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/kernel.h>
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #include <linux/signal.h>
12*4882a593Smuzhiyun #include <linux/sched.h>
13*4882a593Smuzhiyun #include <linux/interrupt.h>
14*4882a593Smuzhiyun #include <asm/io.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #include <media/dmxdev.h>
17*4882a593Smuzhiyun #include <media/dvbdev.h>
18*4882a593Smuzhiyun #include <media/dvb_demux.h>
19*4882a593Smuzhiyun #include <media/dvb_frontend.h>
20*4882a593Smuzhiyun #include <media/dvb_net.h>
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun #include "mantis_common.h"
23*4882a593Smuzhiyun #include "mantis_link.h" /* temporary due to physical layer stuff */
24*4882a593Smuzhiyun #include "mantis_reg.h"
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun /*
27*4882a593Smuzhiyun * If Slot state is already PLUG_IN event and we are called
28*4882a593Smuzhiyun * again, definitely it is jitter alone
29*4882a593Smuzhiyun */
mantis_event_cam_plugin(struct mantis_ca * ca)30*4882a593Smuzhiyun void mantis_event_cam_plugin(struct mantis_ca *ca)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun struct mantis_pci *mantis = ca->ca_priv;
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun u32 gpif_irqcfg;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun if (ca->slot_state == MODULE_XTRACTED) {
37*4882a593Smuzhiyun dprintk(MANTIS_DEBUG, 1, "Event: CAM Plugged IN: Adapter(%d) Slot(0)", mantis->num);
38*4882a593Smuzhiyun udelay(50);
39*4882a593Smuzhiyun mmwrite(0xda000000, MANTIS_CARD_RESET);
40*4882a593Smuzhiyun gpif_irqcfg = mmread(MANTIS_GPIF_IRQCFG);
41*4882a593Smuzhiyun gpif_irqcfg |= MANTIS_MASK_PLUGOUT;
42*4882a593Smuzhiyun gpif_irqcfg &= ~MANTIS_MASK_PLUGIN;
43*4882a593Smuzhiyun mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
44*4882a593Smuzhiyun udelay(500);
45*4882a593Smuzhiyun ca->slot_state = MODULE_INSERTED;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun udelay(100);
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun /*
51*4882a593Smuzhiyun * If Slot state is already UN_PLUG event and we are called
52*4882a593Smuzhiyun * again, definitely it is jitter alone
53*4882a593Smuzhiyun */
mantis_event_cam_unplug(struct mantis_ca * ca)54*4882a593Smuzhiyun void mantis_event_cam_unplug(struct mantis_ca *ca)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun struct mantis_pci *mantis = ca->ca_priv;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun u32 gpif_irqcfg;
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun if (ca->slot_state == MODULE_INSERTED) {
61*4882a593Smuzhiyun dprintk(MANTIS_DEBUG, 1, "Event: CAM Unplugged: Adapter(%d) Slot(0)", mantis->num);
62*4882a593Smuzhiyun udelay(50);
63*4882a593Smuzhiyun mmwrite(0x00da0000, MANTIS_CARD_RESET);
64*4882a593Smuzhiyun gpif_irqcfg = mmread(MANTIS_GPIF_IRQCFG);
65*4882a593Smuzhiyun gpif_irqcfg |= MANTIS_MASK_PLUGIN;
66*4882a593Smuzhiyun gpif_irqcfg &= ~MANTIS_MASK_PLUGOUT;
67*4882a593Smuzhiyun mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
68*4882a593Smuzhiyun udelay(500);
69*4882a593Smuzhiyun ca->slot_state = MODULE_XTRACTED;
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun udelay(100);
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun
mantis_pcmcia_init(struct mantis_ca * ca)74*4882a593Smuzhiyun int mantis_pcmcia_init(struct mantis_ca *ca)
75*4882a593Smuzhiyun {
76*4882a593Smuzhiyun struct mantis_pci *mantis = ca->ca_priv;
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun u32 gpif_stat, card_stat;
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun mantis_unmask_ints(mantis, MANTIS_INT_IRQ0);
81*4882a593Smuzhiyun gpif_stat = mmread(MANTIS_GPIF_STATUS);
82*4882a593Smuzhiyun card_stat = mmread(MANTIS_GPIF_IRQCFG);
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun if (gpif_stat & MANTIS_GPIF_DETSTAT) {
85*4882a593Smuzhiyun dprintk(MANTIS_DEBUG, 1, "CAM found on Adapter(%d) Slot(0)", mantis->num);
86*4882a593Smuzhiyun mmwrite(card_stat | MANTIS_MASK_PLUGOUT, MANTIS_GPIF_IRQCFG);
87*4882a593Smuzhiyun ca->slot_state = MODULE_INSERTED;
88*4882a593Smuzhiyun dvb_ca_en50221_camchange_irq(&ca->en50221,
89*4882a593Smuzhiyun 0,
90*4882a593Smuzhiyun DVB_CA_EN50221_CAMCHANGE_INSERTED);
91*4882a593Smuzhiyun } else {
92*4882a593Smuzhiyun dprintk(MANTIS_DEBUG, 1, "Empty Slot on Adapter(%d) Slot(0)", mantis->num);
93*4882a593Smuzhiyun mmwrite(card_stat | MANTIS_MASK_PLUGIN, MANTIS_GPIF_IRQCFG);
94*4882a593Smuzhiyun ca->slot_state = MODULE_XTRACTED;
95*4882a593Smuzhiyun dvb_ca_en50221_camchange_irq(&ca->en50221,
96*4882a593Smuzhiyun 0,
97*4882a593Smuzhiyun DVB_CA_EN50221_CAMCHANGE_REMOVED);
98*4882a593Smuzhiyun }
99*4882a593Smuzhiyun
100*4882a593Smuzhiyun return 0;
101*4882a593Smuzhiyun }
102*4882a593Smuzhiyun
mantis_pcmcia_exit(struct mantis_ca * ca)103*4882a593Smuzhiyun void mantis_pcmcia_exit(struct mantis_ca *ca)
104*4882a593Smuzhiyun {
105*4882a593Smuzhiyun struct mantis_pci *mantis = ca->ca_priv;
106*4882a593Smuzhiyun
107*4882a593Smuzhiyun mmwrite(mmread(MANTIS_GPIF_STATUS) & (~MANTIS_CARD_PLUGOUT | ~MANTIS_CARD_PLUGIN), MANTIS_GPIF_STATUS);
108*4882a593Smuzhiyun mantis_mask_ints(mantis, MANTIS_INT_IRQ0);
109*4882a593Smuzhiyun }
110