mirror of https://gitee.com/openkylin/linux.git
122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
/*
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Mantis PCI bridge driver
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Copyright (C) Manu Abraham (abraham.manu@gmail.com)
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/signal.h>
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#include <linux/sched.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <media/dmxdev.h>
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#include <media/dvbdev.h>
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#include <media/dvb_demux.h>
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#include <media/dvb_frontend.h>
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#include <media/dvb_net.h>
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#include "mantis_common.h"
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#include "mantis_link.h" /* temporary due to physical layer stuff */
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#include "mantis_reg.h"
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/*
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* If Slot state is already PLUG_IN event and we are called
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* again, definitely it is jitter alone
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*/
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void mantis_event_cam_plugin(struct mantis_ca *ca)
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{
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struct mantis_pci *mantis = ca->ca_priv;
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u32 gpif_irqcfg;
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if (ca->slot_state == MODULE_XTRACTED) {
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dprintk(MANTIS_DEBUG, 1, "Event: CAM Plugged IN: Adapter(%d) Slot(0)", mantis->num);
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udelay(50);
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mmwrite(0xda000000, MANTIS_CARD_RESET);
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gpif_irqcfg = mmread(MANTIS_GPIF_IRQCFG);
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gpif_irqcfg |= MANTIS_MASK_PLUGOUT;
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gpif_irqcfg &= ~MANTIS_MASK_PLUGIN;
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mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
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udelay(500);
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ca->slot_state = MODULE_INSERTED;
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}
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udelay(100);
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}
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/*
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* If Slot state is already UN_PLUG event and we are called
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* again, definitely it is jitter alone
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*/
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void mantis_event_cam_unplug(struct mantis_ca *ca)
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{
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struct mantis_pci *mantis = ca->ca_priv;
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u32 gpif_irqcfg;
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if (ca->slot_state == MODULE_INSERTED) {
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dprintk(MANTIS_DEBUG, 1, "Event: CAM Unplugged: Adapter(%d) Slot(0)", mantis->num);
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udelay(50);
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mmwrite(0x00da0000, MANTIS_CARD_RESET);
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gpif_irqcfg = mmread(MANTIS_GPIF_IRQCFG);
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gpif_irqcfg |= MANTIS_MASK_PLUGIN;
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gpif_irqcfg &= ~MANTIS_MASK_PLUGOUT;
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mmwrite(gpif_irqcfg, MANTIS_GPIF_IRQCFG);
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udelay(500);
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ca->slot_state = MODULE_XTRACTED;
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}
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udelay(100);
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}
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int mantis_pcmcia_init(struct mantis_ca *ca)
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{
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struct mantis_pci *mantis = ca->ca_priv;
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u32 gpif_stat, card_stat;
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mantis_unmask_ints(mantis, MANTIS_INT_IRQ0);
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gpif_stat = mmread(MANTIS_GPIF_STATUS);
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card_stat = mmread(MANTIS_GPIF_IRQCFG);
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if (gpif_stat & MANTIS_GPIF_DETSTAT) {
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dprintk(MANTIS_DEBUG, 1, "CAM found on Adapter(%d) Slot(0)", mantis->num);
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mmwrite(card_stat | MANTIS_MASK_PLUGOUT, MANTIS_GPIF_IRQCFG);
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ca->slot_state = MODULE_INSERTED;
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dvb_ca_en50221_camchange_irq(&ca->en50221,
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0,
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DVB_CA_EN50221_CAMCHANGE_INSERTED);
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} else {
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dprintk(MANTIS_DEBUG, 1, "Empty Slot on Adapter(%d) Slot(0)", mantis->num);
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mmwrite(card_stat | MANTIS_MASK_PLUGIN, MANTIS_GPIF_IRQCFG);
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ca->slot_state = MODULE_XTRACTED;
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dvb_ca_en50221_camchange_irq(&ca->en50221,
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0,
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DVB_CA_EN50221_CAMCHANGE_REMOVED);
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}
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return 0;
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}
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void mantis_pcmcia_exit(struct mantis_ca *ca)
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{
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struct mantis_pci *mantis = ca->ca_priv;
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mmwrite(mmread(MANTIS_GPIF_STATUS) & (~MANTIS_CARD_PLUGOUT | ~MANTIS_CARD_PLUGIN), MANTIS_GPIF_STATUS);
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mantis_mask_ints(mantis, MANTIS_INT_IRQ0);
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}
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