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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for the remote control of SAA7146 based AV7110 cards
*
* Copyright (C) 1999-2003 Holger Waechtler <holger@convergence.de>
* Copyright (C) 2003-2007 Oliver Endriss <o.endriss@gmx.de>
* Copyright (C) 2019 Sean Young <sean@mess.org>
*/
#include <linux/kernel.h>
#include <media/rc-core.h>
#include "av7110.h"
#include "av7110_hw.h"
#define IR_RC5 0
#define IR_RCMM 1
#define IR_RC5_EXT 2 /* internal only */
/* interrupt handler */
void av7110_ir_handler(struct av7110 *av7110, u32 ircom)
{
struct rc_dev *rcdev = av7110->ir.rcdev;
enum rc_proto proto;
u32 command, addr, scancode;
u32 toggle;
dprintk(4, "ir command = %08x\n", ircom);
if (rcdev) {
switch (av7110->ir.ir_config) {
case IR_RC5: /* RC5: 5 bits device address, 6 bits command */
command = ircom & 0x3f;
addr = (ircom >> 6) & 0x1f;
scancode = RC_SCANCODE_RC5(addr, command);
toggle = ircom & 0x0800;
proto = RC_PROTO_RC5;
break;
case IR_RCMM: /* RCMM: 32 bits scancode */
scancode = ircom & ~0x8000;
toggle = ircom & 0x8000;
proto = RC_PROTO_RCMM32;
break;
case IR_RC5_EXT:
/*
* extended RC5: 5 bits device address, 7 bits command
*
* Extended RC5 uses only one start bit. The second
* start bit is re-assigned bit 6 of the command bit.
*/
command = ircom & 0x3f;
addr = (ircom >> 6) & 0x1f;
if (!(ircom & 0x1000))
command |= 0x40;
scancode = RC_SCANCODE_RC5(addr, command);
toggle = ircom & 0x0800;
proto = RC_PROTO_RC5;
break;
default:
dprintk(2, "unknown ir config %d\n",
av7110->ir.ir_config);
return;
}
rc_keydown(rcdev, proto, scancode, toggle != 0);
}
}
int av7110_set_ir_config(struct av7110 *av7110)
{
dprintk(4, "ir config = %08x\n", av7110->ir.ir_config);
return av7110_fw_cmd(av7110, COMTYPE_PIDFILTER, SetIR, 1,
av7110->ir.ir_config);
}
static int change_protocol(struct rc_dev *rcdev, u64 *rc_type)
{
struct av7110 *av7110 = rcdev->priv;
u32 ir_config;
if (*rc_type & RC_PROTO_BIT_RCMM32) {
ir_config = IR_RCMM;
*rc_type = RC_PROTO_BIT_RCMM32;
} else if (*rc_type & RC_PROTO_BIT_RC5) {
if (FW_VERSION(av7110->arm_app) >= 0x2620)
ir_config = IR_RC5_EXT;
else
ir_config = IR_RC5;
*rc_type = RC_PROTO_BIT_RC5;
} else {
return -EINVAL;
}
if (ir_config == av7110->ir.ir_config)
return 0;
av7110->ir.ir_config = ir_config;
return av7110_set_ir_config(av7110);
}
int av7110_ir_init(struct av7110 *av7110)
{
struct rc_dev *rcdev;
struct pci_dev *pci;
int ret;
rcdev = rc_allocate_device(RC_DRIVER_SCANCODE);
if (!rcdev)
return -ENOMEM;
pci = av7110->dev->pci;
snprintf(av7110->ir.input_phys, sizeof(av7110->ir.input_phys),
"pci-%s/ir0", pci_name(pci));
rcdev->device_name = av7110->card_name;
rcdev->driver_name = KBUILD_MODNAME;
rcdev->input_phys = av7110->ir.input_phys;
rcdev->input_id.bustype = BUS_PCI;
rcdev->input_id.version = 2;
if (pci->subsystem_vendor) {
rcdev->input_id.vendor = pci->subsystem_vendor;
rcdev->input_id.product = pci->subsystem_device;
} else {
rcdev->input_id.vendor = pci->vendor;
rcdev->input_id.product = pci->device;
}
rcdev->dev.parent = &pci->dev;
rcdev->allowed_protocols = RC_PROTO_BIT_RC5 | RC_PROTO_BIT_RCMM32;
rcdev->change_protocol = change_protocol;
rcdev->map_name = RC_MAP_HAUPPAUGE;
rcdev->priv = av7110;
av7110->ir.rcdev = rcdev;
av7110->ir.ir_config = IR_RC5;
av7110_set_ir_config(av7110);
ret = rc_register_device(rcdev);
if (ret) {
av7110->ir.rcdev = NULL;
rc_free_device(rcdev);
}
return ret;
}
void av7110_ir_exit(struct av7110 *av7110)
{
rc_unregister_device(av7110->ir.rcdev);
}
//MODULE_AUTHOR("Holger Waechtler <holger@convergence.de>, Oliver Endriss <o.endriss@gmx.de>");
//MODULE_LICENSE("GPL");
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