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/drivers/media/dvb/mantis/mantis_pcmcia.c

https://bitbucket.org/ndreys/linux-sunxi
C | 120 lines | 76 code | 17 blank | 27 comment | 6 complexity | 261c3b52c568be0a2ca609dd2e2c3c51 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  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
 27#include "dmxdev.h"
 28#include "dvbdev.h"
 29#include "dvb_demux.h"
 30#include "dvb_frontend.h"
 31#include "dvb_net.h"
 32
 33#include "mantis_common.h"
 34#include "mantis_link.h" /* temporary due to physical layer stuff */
 35#include "mantis_reg.h"
 36
 37/*
 38 * If Slot state is already PLUG_IN event and we are called
 39 * again, definitely it is jitter alone
 40 */
 41void mantis_event_cam_plugin(struct mantis_ca *ca)
 42{
 43	struct mantis_pci *mantis = ca->ca_priv;
 44
 45	u32 gpif_irqcfg;
 46
 47	if (ca->slot_state == MODULE_XTRACTED) {
 48		dprintk(MANTIS_DEBUG, 1, "Event: CAM Plugged IN: Adapter(%d) Slot(0)", mantis->num);
 49		udelay(50);
 50		mmwrite(0xda000000, MANTIS_CARD_RESET);
 51		gpif_irqcfg  = mmread(MANTIS_GPIF_IRQCFG);
 52		gpif_irqcfg |= MANTIS_MASK_PLUGOUT;
 53		gpif_irqcfg &= ~MANTIS_MASK_PLUGIN;
 54		mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
 55		udelay(500);
 56		ca->slot_state = MODULE_INSERTED;
 57	}
 58	udelay(100);
 59}
 60
 61/*
 62 * If Slot state is already UN_PLUG event and we are called
 63 * again, definitely it is jitter alone
 64 */
 65void mantis_event_cam_unplug(struct mantis_ca *ca)
 66{
 67	struct mantis_pci *mantis = ca->ca_priv;
 68
 69	u32 gpif_irqcfg;
 70
 71	if (ca->slot_state == MODULE_INSERTED) {
 72		dprintk(MANTIS_DEBUG, 1, "Event: CAM Unplugged: Adapter(%d) Slot(0)", mantis->num);
 73		udelay(50);
 74		mmwrite(0x00da0000, MANTIS_CARD_RESET);
 75		gpif_irqcfg  = mmread(MANTIS_GPIF_IRQCFG);
 76		gpif_irqcfg |= MANTIS_MASK_PLUGIN;
 77		gpif_irqcfg &= ~MANTIS_MASK_PLUGOUT;
 78		mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
 79		udelay(500);
 80		ca->slot_state = MODULE_XTRACTED;
 81	}
 82	udelay(100);
 83}
 84
 85int mantis_pcmcia_init(struct mantis_ca *ca)
 86{
 87	struct mantis_pci *mantis = ca->ca_priv;
 88
 89	u32 gpif_stat, card_stat;
 90
 91	mmwrite(mmread(MANTIS_INT_MASK) | MANTIS_INT_IRQ0, MANTIS_INT_MASK);
 92	gpif_stat = mmread(MANTIS_GPIF_STATUS);
 93	card_stat = mmread(MANTIS_GPIF_IRQCFG);
 94
 95	if (gpif_stat & MANTIS_GPIF_DETSTAT) {
 96		dprintk(MANTIS_DEBUG, 1, "CAM found on Adapter(%d) Slot(0)", mantis->num);
 97		mmwrite(card_stat | MANTIS_MASK_PLUGOUT, MANTIS_GPIF_IRQCFG);
 98		ca->slot_state = MODULE_INSERTED;
 99		dvb_ca_en50221_camchange_irq(&ca->en50221,
100					     0,
101					     DVB_CA_EN50221_CAMCHANGE_INSERTED);
102	} else {
103		dprintk(MANTIS_DEBUG, 1, "Empty Slot on Adapter(%d) Slot(0)", mantis->num);
104		mmwrite(card_stat | MANTIS_MASK_PLUGIN, MANTIS_GPIF_IRQCFG);
105		ca->slot_state = MODULE_XTRACTED;
106		dvb_ca_en50221_camchange_irq(&ca->en50221,
107					     0,
108					     DVB_CA_EN50221_CAMCHANGE_REMOVED);
109	}
110
111	return 0;
112}
113
114void mantis_pcmcia_exit(struct mantis_ca *ca)
115{
116	struct mantis_pci *mantis = ca->ca_priv;
117
118	mmwrite(mmread(MANTIS_GPIF_STATUS) & (~MANTIS_CARD_PLUGOUT | ~MANTIS_CARD_PLUGIN), MANTIS_GPIF_STATUS);
119	mmwrite(mmread(MANTIS_INT_MASK) & ~MANTIS_INT_IRQ0, MANTIS_INT_MASK);
120}