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