// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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Mantis PCI bridge driver
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Copyright (C) Manu Abraham (abraham.manu@gmail.com)
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*/
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#include <linux/signal.h>
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#include <linux/slab.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"
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#include "mantis_hif.h"
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#include "mantis_reg.h"
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#include "mantis_ca.h"
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static int mantis_ca_read_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr)
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{
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struct mantis_ca *ca = en50221->data;
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struct mantis_pci *mantis = ca->ca_priv;
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dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Read", slot);
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if (slot != 0)
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return -EINVAL;
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return mantis_hif_read_mem(ca, addr);
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}
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static int mantis_ca_write_attr_mem(struct dvb_ca_en50221 *en50221, int slot, int addr, u8 data)
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{
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struct mantis_ca *ca = en50221->data;
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struct mantis_pci *mantis = ca->ca_priv;
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dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request Attribute Mem Write", slot);
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if (slot != 0)
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return -EINVAL;
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return mantis_hif_write_mem(ca, addr, data);
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}
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static int mantis_ca_read_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr)
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{
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struct mantis_ca *ca = en50221->data;
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struct mantis_pci *mantis = ca->ca_priv;
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dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Read", slot);
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if (slot != 0)
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return -EINVAL;
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return mantis_hif_read_iom(ca, addr);
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}
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static int mantis_ca_write_cam_ctl(struct dvb_ca_en50221 *en50221, int slot, u8 addr, u8 data)
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{
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struct mantis_ca *ca = en50221->data;
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struct mantis_pci *mantis = ca->ca_priv;
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dprintk(MANTIS_DEBUG, 1, "Slot(%d): Request CAM control Write", slot);
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if (slot != 0)
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return -EINVAL;
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return mantis_hif_write_iom(ca, addr, data);
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}
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static int mantis_ca_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
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{
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struct mantis_ca *ca = en50221->data;
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struct mantis_pci *mantis = ca->ca_priv;
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dprintk(MANTIS_DEBUG, 1, "Slot(%d): Slot RESET", slot);
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udelay(500); /* Wait.. */
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mmwrite(0xda, MANTIS_PCMCIA_RESET); /* Leading edge assert */
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udelay(500);
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mmwrite(0x00, MANTIS_PCMCIA_RESET); /* Trailing edge deassert */
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msleep(1000);
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dvb_ca_en50221_camready_irq(&ca->en50221, 0);
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return 0;
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}
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static int mantis_ca_slot_shutdown(struct dvb_ca_en50221 *en50221, int slot)
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{
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struct mantis_ca *ca = en50221->data;
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struct mantis_pci *mantis = ca->ca_priv;
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dprintk(MANTIS_DEBUG, 1, "Slot(%d): Slot shutdown", slot);
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return 0;
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}
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static int mantis_ts_control(struct dvb_ca_en50221 *en50221, int slot)
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{
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struct mantis_ca *ca = en50221->data;
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struct mantis_pci *mantis = ca->ca_priv;
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dprintk(MANTIS_DEBUG, 1, "Slot(%d): TS control", slot);
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/* mantis_set_direction(mantis, 1); */ /* Enable TS through CAM */
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return 0;
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}
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static int mantis_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open)
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{
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struct mantis_ca *ca = en50221->data;
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struct mantis_pci *mantis = ca->ca_priv;
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dprintk(MANTIS_DEBUG, 1, "Slot(%d): Poll Slot status", slot);
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if (ca->slot_state == MODULE_INSERTED) {
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dprintk(MANTIS_DEBUG, 1, "CA Module present and ready");
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return DVB_CA_EN50221_POLL_CAM_PRESENT | DVB_CA_EN50221_POLL_CAM_READY;
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} else {
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dprintk(MANTIS_DEBUG, 1, "CA Module not present or not ready");
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}
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return 0;
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}
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int mantis_ca_init(struct mantis_pci *mantis)
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{
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struct dvb_adapter *dvb_adapter = &mantis->dvb_adapter;
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struct mantis_ca *ca;
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int ca_flags = 0, result;
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dprintk(MANTIS_DEBUG, 1, "Initializing Mantis CA");
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ca = kzalloc(sizeof(struct mantis_ca), GFP_KERNEL);
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if (!ca) {
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dprintk(MANTIS_ERROR, 1, "Out of memory!, exiting ..");
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result = -ENOMEM;
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goto err;
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}
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ca->ca_priv = mantis;
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mantis->mantis_ca = ca;
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ca_flags = DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE;
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/* register CA interface */
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ca->en50221.owner = THIS_MODULE;
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ca->en50221.read_attribute_mem = mantis_ca_read_attr_mem;
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ca->en50221.write_attribute_mem = mantis_ca_write_attr_mem;
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ca->en50221.read_cam_control = mantis_ca_read_cam_ctl;
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ca->en50221.write_cam_control = mantis_ca_write_cam_ctl;
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ca->en50221.slot_reset = mantis_ca_slot_reset;
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ca->en50221.slot_shutdown = mantis_ca_slot_shutdown;
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ca->en50221.slot_ts_enable = mantis_ts_control;
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ca->en50221.poll_slot_status = mantis_slot_status;
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ca->en50221.data = ca;
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mutex_init(&ca->ca_lock);
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init_waitqueue_head(&ca->hif_data_wq);
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init_waitqueue_head(&ca->hif_opdone_wq);
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init_waitqueue_head(&ca->hif_write_wq);
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dprintk(MANTIS_ERROR, 1, "Registering EN50221 device");
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result = dvb_ca_en50221_init(dvb_adapter, &ca->en50221, ca_flags, 1);
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if (result != 0) {
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dprintk(MANTIS_ERROR, 1, "EN50221: Initialization failed <%d>", result);
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goto err;
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}
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dprintk(MANTIS_ERROR, 1, "Registered EN50221 device");
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mantis_evmgr_init(ca);
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return 0;
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err:
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kfree(ca);
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return result;
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}
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EXPORT_SYMBOL_GPL(mantis_ca_init);
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void mantis_ca_exit(struct mantis_pci *mantis)
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{
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struct mantis_ca *ca = mantis->mantis_ca;
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dprintk(MANTIS_DEBUG, 1, "Mantis CA exit");
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if (!ca)
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return;
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mantis_evmgr_exit(ca);
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dprintk(MANTIS_ERROR, 1, "Unregistering EN50221 device");
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dvb_ca_en50221_release(&ca->en50221);
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kfree(ca);
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}
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EXPORT_SYMBOL_GPL(mantis_ca_exit);
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