diff options
Diffstat (limited to 'drivers/staging/media/deprecated/saa7146/av7110/av7110_ir.c')
| -rw-r--r-- | drivers/staging/media/deprecated/saa7146/av7110/av7110_ir.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/staging/media/deprecated/saa7146/av7110/av7110_ir.c b/drivers/staging/media/deprecated/saa7146/av7110/av7110_ir.c new file mode 100644 index 000000000000..a851ba328e4a --- /dev/null +++ b/drivers/staging/media/deprecated/saa7146/av7110/av7110_ir.c @@ -0,0 +1,158 @@ +// 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"); |