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 */
42void 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 */
66void 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
86int 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	mmwrite(mmread(MANTIS_INT_MASK) | MANTIS_INT_IRQ0, MANTIS_INT_MASK);
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
115void 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	mmwrite(mmread(MANTIS_INT_MASK) & ~MANTIS_INT_IRQ0, MANTIS_INT_MASK);
121}
122