[media] IR: add driver for Nuvoton w836x7hg integrated CIR
This is a new ir-core pnp driver for the Nuvoton w836x7hg integrated CIR function. The chip is found on at least the ASRock ION 330HT boxes and apparently, on a number of Intel DP55-series motherboards: http://www.asrock.com/nettop/overview.asp?Model=ION%20330HT http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=17685&lang=eng This driver was made possible by a hardware donation from Nuvoton, along with sample code (in the form of an lirc driver) and datasheet, so huge thanks to them for supporting this effort. Note that this driver constitutes a massive rewrite, porting from the lirc interfaces to the ir-core interfaces, and restructuring the driver to look more like Maxim Levitsky's ene_ir driver (as well as generally making it look more like kernel code). There's some work left to be done on this driver, to fully support the range of functionality possible, but receive and IR power-on/wake are both functional (may require setting wake key under another OS atm). The hardware I've got (one of the ASRock boxes) only supports RX, so TX is completely untested as of yet. Certain RX parameters, like sample resolution and RX IRQ sample length trigger level could possibly stand to be made tweakable via modparams or sysfs nodes, but the current values work well enough for me w/an MCE RC6A remote. The original lirc driver carried support for the Windows MCE IR keyboard/mouse device, which I plan to add back generically, in a way that should be usable by any raw IR receiver (or at least by this driver and the mceusb driver). Suspend and resume have also been tested, the power button on my remote can be used to wake the machine, and CIR functionality resumes just fine. Module unload/reload has also been tested, though not extensively or repetitively. Also tested to work with the lirc bridge plugin for userspace decoding. Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jarod Wilson
Mauro Carvalho Chehab
parent
72b667ebc1
commit
6d2f5c2788
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@ -113,6 +113,19 @@ config IR_IMON
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To compile this driver as a module, choose M here: the
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module will be called imon.
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config IR_NUVOTON
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tristate "Nuvoton w836x7hg Consumer Infrared Transceiver"
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depends on PNP
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depends on IR_CORE
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---help---
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Say Y here to enable support for integrated infrared receiver
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/transciever made by Nuvoton (formerly Winbond). This chip is
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found in the ASRock ION 330HT, as well as assorted Intel
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DP55-series motherboards (and of course, possibly others).
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To compile this driver as a module, choose M here: the
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module will be called nuvoton-cir.
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config IR_MCEUSB
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tristate "Windows Media Center Ed. eHome Infrared Transceiver"
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depends on USB_ARCH_HAS_HCD
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@ -17,5 +17,6 @@ obj-$(CONFIG_IR_LIRC_CODEC) += ir-lirc-codec.o
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# stand-alone IR receivers/transmitters
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obj-$(CONFIG_IR_IMON) += imon.o
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obj-$(CONFIG_IR_MCEUSB) += mceusb.o
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obj-$(CONFIG_IR_NUVOTON) += nuvoton-cir.o
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obj-$(CONFIG_IR_ENE) += ene_ir.o
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obj-$(CONFIG_IR_STREAMZAP) += streamzap.o
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File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,408 @@
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/*
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* Driver for Nuvoton Technology Corporation w83667hg/w83677hg-i CIR
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*
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* Copyright (C) 2010 Jarod Wilson <jarod@redhat.com>
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* Copyright (C) 2009 Nuvoton PS Team
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*
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* Special thanks to Nuvoton for providing hardware, spec sheets and
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* sample code upon which portions of this driver are based. Indirect
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* thanks also to Maxim Levitsky, whose ene_ir driver this driver is
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* modeled after.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*/
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#include <linux/spinlock.h>
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#include <asm/ioctl.h>
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/* platform driver name to register */
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#define NVT_DRIVER_NAME "nuvoton-cir"
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/* debugging module parameter */
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static int debug;
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#define nvt_pr(level, text, ...) \
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printk(level KBUILD_MODNAME ": " text, ## __VA_ARGS__)
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#define nvt_dbg(text, ...) \
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if (debug) \
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printk(KERN_DEBUG \
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KBUILD_MODNAME ": " text "\n" , ## __VA_ARGS__)
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#define nvt_dbg_verbose(text, ...) \
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if (debug > 1) \
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printk(KERN_DEBUG \
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KBUILD_MODNAME ": " text "\n" , ## __VA_ARGS__)
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#define nvt_dbg_wake(text, ...) \
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if (debug > 2) \
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printk(KERN_DEBUG \
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KBUILD_MODNAME ": " text "\n" , ## __VA_ARGS__)
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/*
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* Original lirc driver said min value of 76, and recommended value of 256
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* for the buffer length, but then used 2048. Never mind that the size of the
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* RX FIFO is 32 bytes... So I'm using 32 for RX and 256 for TX atm, but I'm
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* not sure if maybe that TX value is off by a factor of 8 (bits vs. bytes),
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* and I don't have TX-capable hardware to test/debug on...
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*/
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#define TX_BUF_LEN 256
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#define RX_BUF_LEN 32
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struct nvt_dev {
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struct pnp_dev *pdev;
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struct input_dev *rdev;
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struct ir_dev_props *props;
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struct ir_raw_event rawir;
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spinlock_t nvt_lock;
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bool in_use;
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/* for rx */
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u8 buf[RX_BUF_LEN];
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unsigned int pkts;
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struct {
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spinlock_t lock;
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u8 buf[TX_BUF_LEN];
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unsigned int buf_count;
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unsigned int cur_buf_num;
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wait_queue_head_t queue;
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u8 tx_state;
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} tx;
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/* EFER Config register index/data pair */
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u8 cr_efir;
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u8 cr_efdr;
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/* hardware I/O settings */
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unsigned long cir_addr;
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unsigned long cir_wake_addr;
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int cir_irq;
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int cir_wake_irq;
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/* hardware id */
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u8 chip_major;
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u8 chip_minor;
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/* hardware features */
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bool hw_learning_capable;
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bool hw_tx_capable;
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/* rx settings */
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bool learning_enabled;
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bool carrier_detect_enabled;
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/* track cir wake state */
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u8 wake_state;
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/* for study */
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u8 study_state;
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/* carrier period = 1 / frequency */
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u32 carrier;
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};
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/* study states */
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#define ST_STUDY_NONE 0x0
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#define ST_STUDY_START 0x1
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#define ST_STUDY_CARRIER 0x2
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#define ST_STUDY_ALL_RECV 0x4
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/* wake states */
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#define ST_WAKE_NONE 0x0
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#define ST_WAKE_START 0x1
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#define ST_WAKE_FINISH 0x2
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/* receive states */
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#define ST_RX_WAIT_7F 0x1
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#define ST_RX_WAIT_HEAD 0x2
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#define ST_RX_WAIT_SILENT_END 0x4
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/* send states */
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#define ST_TX_NONE 0x0
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#define ST_TX_REQUEST 0x2
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#define ST_TX_REPLY 0x4
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/* buffer packet constants */
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#define BUF_PULSE_BIT 0x80
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#define BUF_LEN_MASK 0x7f
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#define BUF_REPEAT_BYTE 0x70
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#define BUF_REPEAT_MASK 0xf0
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/* CIR settings */
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/* total length of CIR and CIR WAKE */
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#define CIR_IOREG_LENGTH 0x0f
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/* RX limit length, 8 high bits for SLCH, 8 low bits for SLCL (0x7d0 = 2000) */
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#define CIR_RX_LIMIT_COUNT 0x7d0
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/* CIR Regs */
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#define CIR_IRCON 0x00
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#define CIR_IRSTS 0x01
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#define CIR_IREN 0x02
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#define CIR_RXFCONT 0x03
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#define CIR_CP 0x04
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#define CIR_CC 0x05
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#define CIR_SLCH 0x06
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#define CIR_SLCL 0x07
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#define CIR_FIFOCON 0x08
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#define CIR_IRFIFOSTS 0x09
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#define CIR_SRXFIFO 0x0a
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#define CIR_TXFCONT 0x0b
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#define CIR_STXFIFO 0x0c
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#define CIR_FCCH 0x0d
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#define CIR_FCCL 0x0e
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#define CIR_IRFSM 0x0f
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/* CIR IRCON settings */
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#define CIR_IRCON_RECV 0x80
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#define CIR_IRCON_WIREN 0x40
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#define CIR_IRCON_TXEN 0x20
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#define CIR_IRCON_RXEN 0x10
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#define CIR_IRCON_WRXINV 0x08
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#define CIR_IRCON_RXINV 0x04
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#define CIR_IRCON_SAMPLE_PERIOD_SEL_1 0x00
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#define CIR_IRCON_SAMPLE_PERIOD_SEL_25 0x01
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#define CIR_IRCON_SAMPLE_PERIOD_SEL_50 0x02
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#define CIR_IRCON_SAMPLE_PERIOD_SEL_100 0x03
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/* FIXME: make this a runtime option */
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/* select sample period as 50us */
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#define CIR_IRCON_SAMPLE_PERIOD_SEL CIR_IRCON_SAMPLE_PERIOD_SEL_50
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/* CIR IRSTS settings */
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#define CIR_IRSTS_RDR 0x80
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#define CIR_IRSTS_RTR 0x40
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#define CIR_IRSTS_PE 0x20
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#define CIR_IRSTS_RFO 0x10
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#define CIR_IRSTS_TE 0x08
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#define CIR_IRSTS_TTR 0x04
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#define CIR_IRSTS_TFU 0x02
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#define CIR_IRSTS_GH 0x01
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/* CIR IREN settings */
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#define CIR_IREN_RDR 0x80
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#define CIR_IREN_RTR 0x40
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#define CIR_IREN_PE 0x20
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#define CIR_IREN_RFO 0x10
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#define CIR_IREN_TE 0x08
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#define CIR_IREN_TTR 0x04
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#define CIR_IREN_TFU 0x02
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#define CIR_IREN_GH 0x01
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/* CIR FIFOCON settings */
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#define CIR_FIFOCON_TXFIFOCLR 0x80
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#define CIR_FIFOCON_TX_TRIGGER_LEV_31 0x00
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#define CIR_FIFOCON_TX_TRIGGER_LEV_24 0x10
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#define CIR_FIFOCON_TX_TRIGGER_LEV_16 0x20
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#define CIR_FIFOCON_TX_TRIGGER_LEV_8 0x30
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/* FIXME: make this a runtime option */
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/* select TX trigger level as 16 */
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#define CIR_FIFOCON_TX_TRIGGER_LEV CIR_FIFOCON_TX_TRIGGER_LEV_16
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#define CIR_FIFOCON_RXFIFOCLR 0x08
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#define CIR_FIFOCON_RX_TRIGGER_LEV_1 0x00
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#define CIR_FIFOCON_RX_TRIGGER_LEV_8 0x01
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#define CIR_FIFOCON_RX_TRIGGER_LEV_16 0x02
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#define CIR_FIFOCON_RX_TRIGGER_LEV_24 0x03
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/* FIXME: make this a runtime option */
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/* select RX trigger level as 24 */
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#define CIR_FIFOCON_RX_TRIGGER_LEV CIR_FIFOCON_RX_TRIGGER_LEV_24
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/* CIR IRFIFOSTS settings */
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#define CIR_IRFIFOSTS_IR_PENDING 0x80
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#define CIR_IRFIFOSTS_RX_GS 0x40
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#define CIR_IRFIFOSTS_RX_FTA 0x20
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#define CIR_IRFIFOSTS_RX_EMPTY 0x10
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#define CIR_IRFIFOSTS_RX_FULL 0x08
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#define CIR_IRFIFOSTS_TX_FTA 0x04
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#define CIR_IRFIFOSTS_TX_EMPTY 0x02
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#define CIR_IRFIFOSTS_TX_FULL 0x01
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/* CIR WAKE UP Regs */
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#define CIR_WAKE_IRCON 0x00
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#define CIR_WAKE_IRSTS 0x01
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#define CIR_WAKE_IREN 0x02
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#define CIR_WAKE_FIFO_CMP_DEEP 0x03
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#define CIR_WAKE_FIFO_CMP_TOL 0x04
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#define CIR_WAKE_FIFO_COUNT 0x05
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#define CIR_WAKE_SLCH 0x06
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#define CIR_WAKE_SLCL 0x07
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#define CIR_WAKE_FIFOCON 0x08
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#define CIR_WAKE_SRXFSTS 0x09
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#define CIR_WAKE_SAMPLE_RX_FIFO 0x0a
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#define CIR_WAKE_WR_FIFO_DATA 0x0b
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#define CIR_WAKE_RD_FIFO_ONLY 0x0c
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#define CIR_WAKE_RD_FIFO_ONLY_IDX 0x0d
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#define CIR_WAKE_FIFO_IGNORE 0x0e
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#define CIR_WAKE_IRFSM 0x0f
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/* CIR WAKE UP IRCON settings */
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#define CIR_WAKE_IRCON_DEC_RST 0x80
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#define CIR_WAKE_IRCON_MODE1 0x40
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#define CIR_WAKE_IRCON_MODE0 0x20
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#define CIR_WAKE_IRCON_RXEN 0x10
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#define CIR_WAKE_IRCON_R 0x08
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#define CIR_WAKE_IRCON_RXINV 0x04
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/* FIXME/jarod: make this a runtime option */
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/* select a same sample period like cir register */
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#define CIR_WAKE_IRCON_SAMPLE_PERIOD_SEL CIR_IRCON_SAMPLE_PERIOD_SEL_50
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/* CIR WAKE IRSTS Bits */
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#define CIR_WAKE_IRSTS_RDR 0x80
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#define CIR_WAKE_IRSTS_RTR 0x40
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#define CIR_WAKE_IRSTS_PE 0x20
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#define CIR_WAKE_IRSTS_RFO 0x10
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#define CIR_WAKE_IRSTS_GH 0x08
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#define CIR_WAKE_IRSTS_IR_PENDING 0x01
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/* CIR WAKE UP IREN Bits */
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#define CIR_WAKE_IREN_RDR 0x80
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#define CIR_WAKE_IREN_RTR 0x40
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#define CIR_WAKE_IREN_PE 0x20
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#define CIR_WAKE_IREN_RFO 0x10
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#define CIR_WAKE_IREN_TE 0x08
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#define CIR_WAKE_IREN_TTR 0x04
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#define CIR_WAKE_IREN_TFU 0x02
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#define CIR_WAKE_IREN_GH 0x01
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/* CIR WAKE FIFOCON settings */
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#define CIR_WAKE_FIFOCON_RXFIFOCLR 0x08
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#define CIR_WAKE_FIFOCON_RX_TRIGGER_LEV_67 0x00
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#define CIR_WAKE_FIFOCON_RX_TRIGGER_LEV_66 0x01
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#define CIR_WAKE_FIFOCON_RX_TRIGGER_LEV_65 0x02
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#define CIR_WAKE_FIFOCON_RX_TRIGGER_LEV_64 0x03
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/* FIXME: make this a runtime option */
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/* select WAKE UP RX trigger level as 67 */
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#define CIR_WAKE_FIFOCON_RX_TRIGGER_LEV CIR_WAKE_FIFOCON_RX_TRIGGER_LEV_67
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/* CIR WAKE SRXFSTS settings */
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#define CIR_WAKE_IRFIFOSTS_RX_GS 0x80
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#define CIR_WAKE_IRFIFOSTS_RX_FTA 0x40
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#define CIR_WAKE_IRFIFOSTS_RX_EMPTY 0x20
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#define CIR_WAKE_IRFIFOSTS_RX_FULL 0x10
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/* CIR Wake FIFO buffer is 67 bytes long */
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#define CIR_WAKE_FIFO_LEN 67
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/* CIR Wake byte comparison tolerance */
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#define CIR_WAKE_CMP_TOLERANCE 5
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/*
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* Extended Function Enable Registers:
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* Extended Function Index Register
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* Extended Function Data Register
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*/
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#define CR_EFIR 0x2e
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#define CR_EFDR 0x2f
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/* Possible alternate EFER values, depends on how the chip is wired */
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#define CR_EFIR2 0x4e
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#define CR_EFDR2 0x4f
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/* Extended Function Mode enable/disable magic values */
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#define EFER_EFM_ENABLE 0x87
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#define EFER_EFM_DISABLE 0xaa
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/* Chip IDs found in CR_CHIP_ID_{HI,LO} */
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#define CHIP_ID_HIGH 0xb4
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#define CHIP_ID_LOW 0x72
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#define CHIP_ID_LOW2 0x73
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/* Config regs we need to care about */
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#define CR_SOFTWARE_RESET 0x02
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#define CR_LOGICAL_DEV_SEL 0x07
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#define CR_CHIP_ID_HI 0x20
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#define CR_CHIP_ID_LO 0x21
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#define CR_DEV_POWER_DOWN 0x22 /* bit 2 is CIR power, default power on */
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#define CR_OUTPUT_PIN_SEL 0x27
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#define CR_LOGICAL_DEV_EN 0x30 /* valid for all logical devices */
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/* next three regs valid for both the CIR and CIR_WAKE logical devices */
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#define CR_CIR_BASE_ADDR_HI 0x60
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#define CR_CIR_BASE_ADDR_LO 0x61
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#define CR_CIR_IRQ_RSRC 0x70
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/* next three regs valid only for ACPI logical dev */
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#define CR_ACPI_CIR_WAKE 0xe0
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#define CR_ACPI_IRQ_EVENTS 0xf6
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#define CR_ACPI_IRQ_EVENTS2 0xf7
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/* Logical devices that we need to care about */
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#define LOGICAL_DEV_LPT 0x01
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#define LOGICAL_DEV_CIR 0x06
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#define LOGICAL_DEV_ACPI 0x0a
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#define LOGICAL_DEV_CIR_WAKE 0x0e
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#define LOGICAL_DEV_DISABLE 0x00
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#define LOGICAL_DEV_ENABLE 0x01
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#define CIR_WAKE_ENABLE_BIT 0x08
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#define CIR_INTR_MOUSE_IRQ_BIT 0x80
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#define PME_INTR_CIR_PASS_BIT 0x08
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#define OUTPUT_PIN_SEL_MASK 0xbc
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#define OUTPUT_ENABLE_CIR 0x01 /* Pin95=CIRRX, Pin96=CIRTX1 */
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#define OUTPUT_ENABLE_CIRWB 0x40 /* enable wide-band sensor */
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/* MCE CIR signal length, related on sample period */
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/* MCE CIR controller signal length: about 43ms
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* 43ms / 50us (sample period) * 0.85 (inaccuracy)
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*/
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#define CONTROLLER_BUF_LEN_MIN 830
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||||
/* MCE CIR keyboard signal length: about 26ms
|
||||
* 26ms / 50us (sample period) * 0.85 (inaccuracy)
|
||||
*/
|
||||
#define KEYBOARD_BUF_LEN_MAX 650
|
||||
#define KEYBOARD_BUF_LEN_MIN 610
|
||||
|
||||
/* MCE CIR mouse signal length: about 24ms
|
||||
* 24ms / 50us (sample period) * 0.85 (inaccuracy)
|
||||
*/
|
||||
#define MOUSE_BUF_LEN_MIN 565
|
||||
|
||||
#define CIR_SAMPLE_PERIOD 50
|
||||
#define CIR_SAMPLE_LOW_INACCURACY 0.85
|
||||
|
||||
/* MAX silence time that driver will sent to lirc */
|
||||
#define MAX_SILENCE_TIME 60000
|
||||
|
||||
#if CIR_IRCON_SAMPLE_PERIOD_SEL == CIR_IRCON_SAMPLE_PERIOD_SEL_100
|
||||
#define SAMPLE_PERIOD 100
|
||||
|
||||
#elif CIR_IRCON_SAMPLE_PERIOD_SEL == CIR_IRCON_SAMPLE_PERIOD_SEL_50
|
||||
#define SAMPLE_PERIOD 50
|
||||
|
||||
#elif CIR_IRCON_SAMPLE_PERIOD_SEL == CIR_IRCON_SAMPLE_PERIOD_SEL_25
|
||||
#define SAMPLE_PERIOD 25
|
||||
|
||||
#else
|
||||
#define SAMPLE_PERIOD 1
|
||||
#endif
|
||||
|
||||
/* as VISTA MCE definition, valid carrier value */
|
||||
#define MAX_CARRIER 60000
|
||||
#define MIN_CARRIER 30000
|
||||
Loading…
Reference in New Issue