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