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6f2627c29f
A sample resolution of 2us generates more than 300 interrupts per key and this resolution is not needed unless carrier reports are enabled. Revert to a resolution of 10us unless carrier reports are needed. This generates up to a fifth of the interrupts. Signed-off-by: Sean Young <sean@mess.org> Acked-by: David Härdeman <david@hardeman.nu> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
1254 lines
34 KiB
C
1254 lines
34 KiB
C
/*
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* winbond-cir.c - Driver for the Consumer IR functionality of Winbond
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* SuperI/O chips.
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*
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* Currently supports the Winbond WPCD376i chip (PNP id WEC1022), but
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* could probably support others (Winbond WEC102X, NatSemi, etc)
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* with minor modifications.
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*
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* Original Author: David Härdeman <david@hardeman.nu>
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* Copyright (C) 2012 Sean Young <sean@mess.org>
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* Copyright (C) 2009 - 2011 David Härdeman <david@hardeman.nu>
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*
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* Dedicated to my daughter Matilda, without whose loving attention this
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* driver would have been finished in half the time and with a fraction
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* of the bugs.
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*
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* Written using:
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* o Winbond WPCD376I datasheet helpfully provided by Jesse Barnes at Intel
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* o NatSemi PC87338/PC97338 datasheet (for the serial port stuff)
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* o DSDT dumps
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*
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* Supported features:
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* o IR Receive
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* o IR Transmit
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* o Wake-On-CIR functionality
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* o Carrier detection
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/pnp.h>
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#include <linux/interrupt.h>
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#include <linux/timer.h>
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#include <linux/leds.h>
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#include <linux/spinlock.h>
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#include <linux/pci_ids.h>
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#include <linux/io.h>
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#include <linux/bitrev.h>
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#include <linux/slab.h>
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#include <linux/wait.h>
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#include <linux/sched.h>
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#include <media/rc-core.h>
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#define DRVNAME "winbond-cir"
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/* CEIR Wake-Up Registers, relative to data->wbase */
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#define WBCIR_REG_WCEIR_CTL 0x03 /* CEIR Receiver Control */
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#define WBCIR_REG_WCEIR_STS 0x04 /* CEIR Receiver Status */
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#define WBCIR_REG_WCEIR_EV_EN 0x05 /* CEIR Receiver Event Enable */
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#define WBCIR_REG_WCEIR_CNTL 0x06 /* CEIR Receiver Counter Low */
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#define WBCIR_REG_WCEIR_CNTH 0x07 /* CEIR Receiver Counter High */
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#define WBCIR_REG_WCEIR_INDEX 0x08 /* CEIR Receiver Index */
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#define WBCIR_REG_WCEIR_DATA 0x09 /* CEIR Receiver Data */
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#define WBCIR_REG_WCEIR_CSL 0x0A /* CEIR Re. Compare Strlen */
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#define WBCIR_REG_WCEIR_CFG1 0x0B /* CEIR Re. Configuration 1 */
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#define WBCIR_REG_WCEIR_CFG2 0x0C /* CEIR Re. Configuration 2 */
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/* CEIR Enhanced Functionality Registers, relative to data->ebase */
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#define WBCIR_REG_ECEIR_CTS 0x00 /* Enhanced IR Control Status */
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#define WBCIR_REG_ECEIR_CCTL 0x01 /* Infrared Counter Control */
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#define WBCIR_REG_ECEIR_CNT_LO 0x02 /* Infrared Counter LSB */
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#define WBCIR_REG_ECEIR_CNT_HI 0x03 /* Infrared Counter MSB */
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#define WBCIR_REG_ECEIR_IREM 0x04 /* Infrared Emitter Status */
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/* SP3 Banked Registers, relative to data->sbase */
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#define WBCIR_REG_SP3_BSR 0x03 /* Bank Select, all banks */
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/* Bank 0 */
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#define WBCIR_REG_SP3_RXDATA 0x00 /* FIFO RX data (r) */
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#define WBCIR_REG_SP3_TXDATA 0x00 /* FIFO TX data (w) */
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#define WBCIR_REG_SP3_IER 0x01 /* Interrupt Enable */
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#define WBCIR_REG_SP3_EIR 0x02 /* Event Identification (r) */
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#define WBCIR_REG_SP3_FCR 0x02 /* FIFO Control (w) */
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#define WBCIR_REG_SP3_MCR 0x04 /* Mode Control */
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#define WBCIR_REG_SP3_LSR 0x05 /* Link Status */
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#define WBCIR_REG_SP3_MSR 0x06 /* Modem Status */
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#define WBCIR_REG_SP3_ASCR 0x07 /* Aux Status and Control */
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/* Bank 2 */
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#define WBCIR_REG_SP3_BGDL 0x00 /* Baud Divisor LSB */
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#define WBCIR_REG_SP3_BGDH 0x01 /* Baud Divisor MSB */
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#define WBCIR_REG_SP3_EXCR1 0x02 /* Extended Control 1 */
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#define WBCIR_REG_SP3_EXCR2 0x04 /* Extended Control 2 */
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#define WBCIR_REG_SP3_TXFLV 0x06 /* TX FIFO Level */
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#define WBCIR_REG_SP3_RXFLV 0x07 /* RX FIFO Level */
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/* Bank 3 */
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#define WBCIR_REG_SP3_MRID 0x00 /* Module Identification */
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#define WBCIR_REG_SP3_SH_LCR 0x01 /* LCR Shadow */
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#define WBCIR_REG_SP3_SH_FCR 0x02 /* FCR Shadow */
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/* Bank 4 */
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#define WBCIR_REG_SP3_IRCR1 0x02 /* Infrared Control 1 */
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/* Bank 5 */
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#define WBCIR_REG_SP3_IRCR2 0x04 /* Infrared Control 2 */
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/* Bank 6 */
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#define WBCIR_REG_SP3_IRCR3 0x00 /* Infrared Control 3 */
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#define WBCIR_REG_SP3_SIR_PW 0x02 /* SIR Pulse Width */
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/* Bank 7 */
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#define WBCIR_REG_SP3_IRRXDC 0x00 /* IR RX Demod Control */
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#define WBCIR_REG_SP3_IRTXMC 0x01 /* IR TX Mod Control */
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#define WBCIR_REG_SP3_RCCFG 0x02 /* CEIR Config */
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#define WBCIR_REG_SP3_IRCFG1 0x04 /* Infrared Config 1 */
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#define WBCIR_REG_SP3_IRCFG4 0x07 /* Infrared Config 4 */
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/*
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* Magic values follow
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*/
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/* No interrupts for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
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#define WBCIR_IRQ_NONE 0x00
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/* RX data bit for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
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#define WBCIR_IRQ_RX 0x01
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/* TX data low bit for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
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#define WBCIR_IRQ_TX_LOW 0x02
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/* Over/Under-flow bit for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
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#define WBCIR_IRQ_ERR 0x04
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/* TX data empty bit for WBCEIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
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#define WBCIR_IRQ_TX_EMPTY 0x20
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/* Led enable/disable bit for WBCIR_REG_ECEIR_CTS */
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#define WBCIR_LED_ENABLE 0x80
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/* RX data available bit for WBCIR_REG_SP3_LSR */
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#define WBCIR_RX_AVAIL 0x01
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/* RX data overrun error bit for WBCIR_REG_SP3_LSR */
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#define WBCIR_RX_OVERRUN 0x02
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/* TX End-Of-Transmission bit for WBCIR_REG_SP3_ASCR */
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#define WBCIR_TX_EOT 0x04
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/* RX disable bit for WBCIR_REG_SP3_ASCR */
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#define WBCIR_RX_DISABLE 0x20
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/* TX data underrun error bit for WBCIR_REG_SP3_ASCR */
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#define WBCIR_TX_UNDERRUN 0x40
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/* Extended mode enable bit for WBCIR_REG_SP3_EXCR1 */
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#define WBCIR_EXT_ENABLE 0x01
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/* Select compare register in WBCIR_REG_WCEIR_INDEX (bits 5 & 6) */
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#define WBCIR_REGSEL_COMPARE 0x10
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/* Select mask register in WBCIR_REG_WCEIR_INDEX (bits 5 & 6) */
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#define WBCIR_REGSEL_MASK 0x20
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/* Starting address of selected register in WBCIR_REG_WCEIR_INDEX */
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#define WBCIR_REG_ADDR0 0x00
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/* Enable carrier counter */
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#define WBCIR_CNTR_EN 0x01
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/* Reset carrier counter */
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#define WBCIR_CNTR_R 0x02
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/* Invert TX */
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#define WBCIR_IRTX_INV 0x04
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/* Receiver oversampling */
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#define WBCIR_RX_T_OV 0x40
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/* Valid banks for the SP3 UART */
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enum wbcir_bank {
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WBCIR_BANK_0 = 0x00,
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WBCIR_BANK_1 = 0x80,
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WBCIR_BANK_2 = 0xE0,
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WBCIR_BANK_3 = 0xE4,
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WBCIR_BANK_4 = 0xE8,
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WBCIR_BANK_5 = 0xEC,
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WBCIR_BANK_6 = 0xF0,
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WBCIR_BANK_7 = 0xF4,
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};
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/* Supported power-on IR Protocols */
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enum wbcir_protocol {
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IR_PROTOCOL_RC5 = 0x0,
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IR_PROTOCOL_NEC = 0x1,
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IR_PROTOCOL_RC6 = 0x2,
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};
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/* Possible states for IR reception */
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enum wbcir_rxstate {
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WBCIR_RXSTATE_INACTIVE = 0,
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WBCIR_RXSTATE_ACTIVE,
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WBCIR_RXSTATE_ERROR
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};
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/* Possible states for IR transmission */
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enum wbcir_txstate {
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WBCIR_TXSTATE_INACTIVE = 0,
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WBCIR_TXSTATE_ACTIVE,
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WBCIR_TXSTATE_ERROR
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};
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/* Misc */
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#define WBCIR_NAME "Winbond CIR"
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#define WBCIR_ID_FAMILY 0xF1 /* Family ID for the WPCD376I */
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#define WBCIR_ID_CHIP 0x04 /* Chip ID for the WPCD376I */
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#define INVALID_SCANCODE 0x7FFFFFFF /* Invalid with all protos */
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#define WAKEUP_IOMEM_LEN 0x10 /* Wake-Up I/O Reg Len */
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#define EHFUNC_IOMEM_LEN 0x10 /* Enhanced Func I/O Reg Len */
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#define SP_IOMEM_LEN 0x08 /* Serial Port 3 (IR) Reg Len */
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/* Per-device data */
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struct wbcir_data {
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spinlock_t spinlock;
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struct rc_dev *dev;
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struct led_classdev led;
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unsigned long wbase; /* Wake-Up Baseaddr */
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unsigned long ebase; /* Enhanced Func. Baseaddr */
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unsigned long sbase; /* Serial Port Baseaddr */
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unsigned int irq; /* Serial Port IRQ */
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u8 irqmask;
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/* RX state */
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enum wbcir_rxstate rxstate;
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struct led_trigger *rxtrigger;
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int carrier_report_enabled;
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u32 pulse_duration;
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/* TX state */
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enum wbcir_txstate txstate;
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struct led_trigger *txtrigger;
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u32 txlen;
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u32 txoff;
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u32 *txbuf;
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u8 txmask;
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u32 txcarrier;
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};
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static enum wbcir_protocol protocol = IR_PROTOCOL_RC6;
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module_param(protocol, uint, 0444);
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MODULE_PARM_DESC(protocol, "IR protocol to use for the power-on command "
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"(0 = RC5, 1 = NEC, 2 = RC6A, default)");
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static bool invert; /* default = 0 */
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module_param(invert, bool, 0444);
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MODULE_PARM_DESC(invert, "Invert the signal from the IR receiver");
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static bool txandrx; /* default = 0 */
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module_param(txandrx, bool, 0444);
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MODULE_PARM_DESC(txandrx, "Allow simultaneous TX and RX");
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static unsigned int wake_sc = 0x800F040C;
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module_param(wake_sc, uint, 0644);
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MODULE_PARM_DESC(wake_sc, "Scancode of the power-on IR command");
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static unsigned int wake_rc6mode = 6;
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module_param(wake_rc6mode, uint, 0644);
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MODULE_PARM_DESC(wake_rc6mode, "RC6 mode for the power-on command "
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"(0 = 0, 6 = 6A, default)");
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/*****************************************************************************
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*
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* UTILITY FUNCTIONS
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*
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*****************************************************************************/
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/* Caller needs to hold wbcir_lock */
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static void
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wbcir_set_bits(unsigned long addr, u8 bits, u8 mask)
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{
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u8 val;
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val = inb(addr);
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val = ((val & ~mask) | (bits & mask));
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outb(val, addr);
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}
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/* Selects the register bank for the serial port */
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static inline void
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wbcir_select_bank(struct wbcir_data *data, enum wbcir_bank bank)
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{
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outb(bank, data->sbase + WBCIR_REG_SP3_BSR);
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}
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static inline void
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wbcir_set_irqmask(struct wbcir_data *data, u8 irqmask)
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{
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if (data->irqmask == irqmask)
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return;
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wbcir_select_bank(data, WBCIR_BANK_0);
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outb(irqmask, data->sbase + WBCIR_REG_SP3_IER);
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data->irqmask = irqmask;
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}
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static enum led_brightness
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wbcir_led_brightness_get(struct led_classdev *led_cdev)
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{
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struct wbcir_data *data = container_of(led_cdev,
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struct wbcir_data,
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led);
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if (inb(data->ebase + WBCIR_REG_ECEIR_CTS) & WBCIR_LED_ENABLE)
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return LED_FULL;
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else
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return LED_OFF;
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}
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static void
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wbcir_led_brightness_set(struct led_classdev *led_cdev,
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enum led_brightness brightness)
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{
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struct wbcir_data *data = container_of(led_cdev,
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struct wbcir_data,
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led);
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wbcir_set_bits(data->ebase + WBCIR_REG_ECEIR_CTS,
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brightness == LED_OFF ? 0x00 : WBCIR_LED_ENABLE,
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WBCIR_LED_ENABLE);
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}
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/* Manchester encodes bits to RC6 message cells (see wbcir_shutdown) */
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static u8
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wbcir_to_rc6cells(u8 val)
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{
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u8 coded = 0x00;
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int i;
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val &= 0x0F;
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for (i = 0; i < 4; i++) {
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if (val & 0x01)
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coded |= 0x02 << (i * 2);
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else
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coded |= 0x01 << (i * 2);
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val >>= 1;
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}
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return coded;
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}
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/*****************************************************************************
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*
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* INTERRUPT FUNCTIONS
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*
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*****************************************************************************/
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static void
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wbcir_carrier_report(struct wbcir_data *data)
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{
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unsigned counter = inb(data->ebase + WBCIR_REG_ECEIR_CNT_LO) |
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inb(data->ebase + WBCIR_REG_ECEIR_CNT_HI) << 8;
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if (counter > 0 && counter < 0xffff) {
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DEFINE_IR_RAW_EVENT(ev);
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ev.carrier_report = 1;
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ev.carrier = DIV_ROUND_CLOSEST(counter * 1000000u,
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data->pulse_duration);
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ir_raw_event_store(data->dev, &ev);
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}
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/* reset and restart the counter */
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data->pulse_duration = 0;
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wbcir_set_bits(data->ebase + WBCIR_REG_ECEIR_CCTL, WBCIR_CNTR_R,
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WBCIR_CNTR_EN | WBCIR_CNTR_R);
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wbcir_set_bits(data->ebase + WBCIR_REG_ECEIR_CCTL, WBCIR_CNTR_EN,
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WBCIR_CNTR_EN | WBCIR_CNTR_R);
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}
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static void
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wbcir_idle_rx(struct rc_dev *dev, bool idle)
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{
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struct wbcir_data *data = dev->priv;
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if (!idle && data->rxstate == WBCIR_RXSTATE_INACTIVE) {
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data->rxstate = WBCIR_RXSTATE_ACTIVE;
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led_trigger_event(data->rxtrigger, LED_FULL);
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}
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if (idle && data->rxstate != WBCIR_RXSTATE_INACTIVE) {
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data->rxstate = WBCIR_RXSTATE_INACTIVE;
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led_trigger_event(data->rxtrigger, LED_OFF);
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if (data->carrier_report_enabled)
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wbcir_carrier_report(data);
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/* Tell hardware to go idle by setting RXINACTIVE */
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outb(WBCIR_RX_DISABLE, data->sbase + WBCIR_REG_SP3_ASCR);
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}
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}
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static void
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wbcir_irq_rx(struct wbcir_data *data, struct pnp_dev *device)
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{
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u8 irdata;
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DEFINE_IR_RAW_EVENT(rawir);
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unsigned duration;
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/* Since RXHDLEV is set, at least 8 bytes are in the FIFO */
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while (inb(data->sbase + WBCIR_REG_SP3_LSR) & WBCIR_RX_AVAIL) {
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irdata = inb(data->sbase + WBCIR_REG_SP3_RXDATA);
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if (data->rxstate == WBCIR_RXSTATE_ERROR)
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continue;
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duration = ((irdata & 0x7F) + 1) *
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(data->carrier_report_enabled ? 2 : 10);
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rawir.pulse = irdata & 0x80 ? false : true;
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rawir.duration = US_TO_NS(duration);
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if (rawir.pulse)
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data->pulse_duration += duration;
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ir_raw_event_store_with_filter(data->dev, &rawir);
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}
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ir_raw_event_handle(data->dev);
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}
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static void
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wbcir_irq_tx(struct wbcir_data *data)
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{
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unsigned int space;
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unsigned int used;
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u8 bytes[16];
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u8 byte;
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if (!data->txbuf)
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return;
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switch (data->txstate) {
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case WBCIR_TXSTATE_INACTIVE:
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/* TX FIFO empty */
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space = 16;
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led_trigger_event(data->txtrigger, LED_FULL);
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break;
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case WBCIR_TXSTATE_ACTIVE:
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/* TX FIFO low (3 bytes or less) */
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space = 13;
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break;
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case WBCIR_TXSTATE_ERROR:
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space = 0;
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break;
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default:
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return;
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}
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/*
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* TX data is run-length coded in bytes: YXXXXXXX
|
|
* Y = space (1) or pulse (0)
|
|
* X = duration, encoded as (X + 1) * 10us (i.e 10 to 1280 us)
|
|
*/
|
|
for (used = 0; used < space && data->txoff != data->txlen; used++) {
|
|
if (data->txbuf[data->txoff] == 0) {
|
|
data->txoff++;
|
|
continue;
|
|
}
|
|
byte = min((u32)0x80, data->txbuf[data->txoff]);
|
|
data->txbuf[data->txoff] -= byte;
|
|
byte--;
|
|
byte |= (data->txoff % 2 ? 0x80 : 0x00); /* pulse/space */
|
|
bytes[used] = byte;
|
|
}
|
|
|
|
while (data->txbuf[data->txoff] == 0 && data->txoff != data->txlen)
|
|
data->txoff++;
|
|
|
|
if (used == 0) {
|
|
/* Finished */
|
|
if (data->txstate == WBCIR_TXSTATE_ERROR)
|
|
/* Clear TX underrun bit */
|
|
outb(WBCIR_TX_UNDERRUN, data->sbase + WBCIR_REG_SP3_ASCR);
|
|
wbcir_set_irqmask(data, WBCIR_IRQ_RX | WBCIR_IRQ_ERR);
|
|
led_trigger_event(data->txtrigger, LED_OFF);
|
|
kfree(data->txbuf);
|
|
data->txbuf = NULL;
|
|
data->txstate = WBCIR_TXSTATE_INACTIVE;
|
|
} else if (data->txoff == data->txlen) {
|
|
/* At the end of transmission, tell the hw before last byte */
|
|
outsb(data->sbase + WBCIR_REG_SP3_TXDATA, bytes, used - 1);
|
|
outb(WBCIR_TX_EOT, data->sbase + WBCIR_REG_SP3_ASCR);
|
|
outb(bytes[used - 1], data->sbase + WBCIR_REG_SP3_TXDATA);
|
|
wbcir_set_irqmask(data, WBCIR_IRQ_RX | WBCIR_IRQ_ERR |
|
|
WBCIR_IRQ_TX_EMPTY);
|
|
} else {
|
|
/* More data to follow... */
|
|
outsb(data->sbase + WBCIR_REG_SP3_RXDATA, bytes, used);
|
|
if (data->txstate == WBCIR_TXSTATE_INACTIVE) {
|
|
wbcir_set_irqmask(data, WBCIR_IRQ_RX | WBCIR_IRQ_ERR |
|
|
WBCIR_IRQ_TX_LOW);
|
|
data->txstate = WBCIR_TXSTATE_ACTIVE;
|
|
}
|
|
}
|
|
}
|
|
|
|
static irqreturn_t
|
|
wbcir_irq_handler(int irqno, void *cookie)
|
|
{
|
|
struct pnp_dev *device = cookie;
|
|
struct wbcir_data *data = pnp_get_drvdata(device);
|
|
unsigned long flags;
|
|
u8 status;
|
|
|
|
spin_lock_irqsave(&data->spinlock, flags);
|
|
wbcir_select_bank(data, WBCIR_BANK_0);
|
|
status = inb(data->sbase + WBCIR_REG_SP3_EIR);
|
|
status &= data->irqmask;
|
|
|
|
if (!status) {
|
|
spin_unlock_irqrestore(&data->spinlock, flags);
|
|
return IRQ_NONE;
|
|
}
|
|
|
|
if (status & WBCIR_IRQ_ERR) {
|
|
/* RX overflow? (read clears bit) */
|
|
if (inb(data->sbase + WBCIR_REG_SP3_LSR) & WBCIR_RX_OVERRUN) {
|
|
data->rxstate = WBCIR_RXSTATE_ERROR;
|
|
ir_raw_event_reset(data->dev);
|
|
}
|
|
|
|
/* TX underflow? */
|
|
if (inb(data->sbase + WBCIR_REG_SP3_ASCR) & WBCIR_TX_UNDERRUN)
|
|
data->txstate = WBCIR_TXSTATE_ERROR;
|
|
}
|
|
|
|
if (status & WBCIR_IRQ_RX)
|
|
wbcir_irq_rx(data, device);
|
|
|
|
if (status & (WBCIR_IRQ_TX_LOW | WBCIR_IRQ_TX_EMPTY))
|
|
wbcir_irq_tx(data);
|
|
|
|
spin_unlock_irqrestore(&data->spinlock, flags);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* RC-CORE INTERFACE FUNCTIONS
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static int
|
|
wbcir_set_carrier_report(struct rc_dev *dev, int enable)
|
|
{
|
|
struct wbcir_data *data = dev->priv;
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&data->spinlock, flags);
|
|
|
|
if (data->carrier_report_enabled == enable) {
|
|
spin_unlock_irqrestore(&data->spinlock, flags);
|
|
return 0;
|
|
}
|
|
|
|
data->pulse_duration = 0;
|
|
wbcir_set_bits(data->ebase + WBCIR_REG_ECEIR_CCTL, WBCIR_CNTR_R,
|
|
WBCIR_CNTR_EN | WBCIR_CNTR_R);
|
|
|
|
if (enable && data->dev->idle)
|
|
wbcir_set_bits(data->ebase + WBCIR_REG_ECEIR_CCTL,
|
|
WBCIR_CNTR_EN, WBCIR_CNTR_EN | WBCIR_CNTR_R);
|
|
|
|
/* Set a higher sampling resolution if carrier reports are enabled */
|
|
wbcir_select_bank(data, WBCIR_BANK_2);
|
|
data->dev->rx_resolution = US_TO_NS(enable ? 2 : 10);
|
|
outb(enable ? 0x03 : 0x0f, data->sbase + WBCIR_REG_SP3_BGDL);
|
|
outb(0x00, data->sbase + WBCIR_REG_SP3_BGDH);
|
|
|
|
/* Enable oversampling if carrier reports are enabled */
|
|
wbcir_select_bank(data, WBCIR_BANK_7);
|
|
wbcir_set_bits(data->sbase + WBCIR_REG_SP3_RCCFG,
|
|
enable ? WBCIR_RX_T_OV : 0, WBCIR_RX_T_OV);
|
|
|
|
data->carrier_report_enabled = enable;
|
|
spin_unlock_irqrestore(&data->spinlock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
wbcir_txcarrier(struct rc_dev *dev, u32 carrier)
|
|
{
|
|
struct wbcir_data *data = dev->priv;
|
|
unsigned long flags;
|
|
u8 val;
|
|
u32 freq;
|
|
|
|
freq = DIV_ROUND_CLOSEST(carrier, 1000);
|
|
if (freq < 30 || freq > 60)
|
|
return -EINVAL;
|
|
|
|
switch (freq) {
|
|
case 58:
|
|
case 59:
|
|
case 60:
|
|
val = freq - 58;
|
|
freq *= 1000;
|
|
break;
|
|
case 57:
|
|
val = freq - 27;
|
|
freq = 56900;
|
|
break;
|
|
default:
|
|
val = freq - 27;
|
|
freq *= 1000;
|
|
break;
|
|
}
|
|
|
|
spin_lock_irqsave(&data->spinlock, flags);
|
|
if (data->txstate != WBCIR_TXSTATE_INACTIVE) {
|
|
spin_unlock_irqrestore(&data->spinlock, flags);
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (data->txcarrier != freq) {
|
|
wbcir_select_bank(data, WBCIR_BANK_7);
|
|
wbcir_set_bits(data->sbase + WBCIR_REG_SP3_IRTXMC, val, 0x1F);
|
|
data->txcarrier = freq;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&data->spinlock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
wbcir_txmask(struct rc_dev *dev, u32 mask)
|
|
{
|
|
struct wbcir_data *data = dev->priv;
|
|
unsigned long flags;
|
|
u8 val;
|
|
|
|
/* Four outputs, only one output can be enabled at a time */
|
|
switch (mask) {
|
|
case 0x1:
|
|
val = 0x0;
|
|
break;
|
|
case 0x2:
|
|
val = 0x1;
|
|
break;
|
|
case 0x4:
|
|
val = 0x2;
|
|
break;
|
|
case 0x8:
|
|
val = 0x3;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
spin_lock_irqsave(&data->spinlock, flags);
|
|
if (data->txstate != WBCIR_TXSTATE_INACTIVE) {
|
|
spin_unlock_irqrestore(&data->spinlock, flags);
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (data->txmask != mask) {
|
|
wbcir_set_bits(data->ebase + WBCIR_REG_ECEIR_CTS, val, 0x0c);
|
|
data->txmask = mask;
|
|
}
|
|
|
|
spin_unlock_irqrestore(&data->spinlock, flags);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
wbcir_tx(struct rc_dev *dev, unsigned *b, unsigned count)
|
|
{
|
|
struct wbcir_data *data = dev->priv;
|
|
unsigned *buf;
|
|
unsigned i;
|
|
unsigned long flags;
|
|
|
|
buf = kmalloc(count * sizeof(*b), GFP_KERNEL);
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
|
|
/* Convert values to multiples of 10us */
|
|
for (i = 0; i < count; i++)
|
|
buf[i] = DIV_ROUND_CLOSEST(b[i], 10);
|
|
|
|
/* Not sure if this is possible, but better safe than sorry */
|
|
spin_lock_irqsave(&data->spinlock, flags);
|
|
if (data->txstate != WBCIR_TXSTATE_INACTIVE) {
|
|
spin_unlock_irqrestore(&data->spinlock, flags);
|
|
kfree(buf);
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Fill the TX fifo once, the irq handler will do the rest */
|
|
data->txbuf = buf;
|
|
data->txlen = count;
|
|
data->txoff = 0;
|
|
wbcir_irq_tx(data);
|
|
|
|
/* We're done */
|
|
spin_unlock_irqrestore(&data->spinlock, flags);
|
|
return count;
|
|
}
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* SETUP/INIT/SUSPEND/RESUME FUNCTIONS
|
|
*
|
|
*****************************************************************************/
|
|
|
|
static void
|
|
wbcir_shutdown(struct pnp_dev *device)
|
|
{
|
|
struct device *dev = &device->dev;
|
|
struct wbcir_data *data = pnp_get_drvdata(device);
|
|
bool do_wake = true;
|
|
u8 match[11];
|
|
u8 mask[11];
|
|
u8 rc6_csl = 0;
|
|
int i;
|
|
|
|
memset(match, 0, sizeof(match));
|
|
memset(mask, 0, sizeof(mask));
|
|
|
|
if (wake_sc == INVALID_SCANCODE || !device_may_wakeup(dev)) {
|
|
do_wake = false;
|
|
goto finish;
|
|
}
|
|
|
|
switch (protocol) {
|
|
case IR_PROTOCOL_RC5:
|
|
if (wake_sc > 0xFFF) {
|
|
do_wake = false;
|
|
dev_err(dev, "RC5 - Invalid wake scancode\n");
|
|
break;
|
|
}
|
|
|
|
/* Mask = 13 bits, ex toggle */
|
|
mask[0] = 0xFF;
|
|
mask[1] = 0x17;
|
|
|
|
match[0] = (wake_sc & 0x003F); /* 6 command bits */
|
|
match[0] |= (wake_sc & 0x0180) >> 1; /* 2 address bits */
|
|
match[1] = (wake_sc & 0x0E00) >> 9; /* 3 address bits */
|
|
if (!(wake_sc & 0x0040)) /* 2nd start bit */
|
|
match[1] |= 0x10;
|
|
|
|
break;
|
|
|
|
case IR_PROTOCOL_NEC:
|
|
if (wake_sc > 0xFFFFFF) {
|
|
do_wake = false;
|
|
dev_err(dev, "NEC - Invalid wake scancode\n");
|
|
break;
|
|
}
|
|
|
|
mask[0] = mask[1] = mask[2] = mask[3] = 0xFF;
|
|
|
|
match[1] = bitrev8((wake_sc & 0xFF));
|
|
match[0] = ~match[1];
|
|
|
|
match[3] = bitrev8((wake_sc & 0xFF00) >> 8);
|
|
if (wake_sc > 0xFFFF)
|
|
match[2] = bitrev8((wake_sc & 0xFF0000) >> 16);
|
|
else
|
|
match[2] = ~match[3];
|
|
|
|
break;
|
|
|
|
case IR_PROTOCOL_RC6:
|
|
|
|
if (wake_rc6mode == 0) {
|
|
if (wake_sc > 0xFFFF) {
|
|
do_wake = false;
|
|
dev_err(dev, "RC6 - Invalid wake scancode\n");
|
|
break;
|
|
}
|
|
|
|
/* Command */
|
|
match[0] = wbcir_to_rc6cells(wake_sc >> 0);
|
|
mask[0] = 0xFF;
|
|
match[1] = wbcir_to_rc6cells(wake_sc >> 4);
|
|
mask[1] = 0xFF;
|
|
|
|
/* Address */
|
|
match[2] = wbcir_to_rc6cells(wake_sc >> 8);
|
|
mask[2] = 0xFF;
|
|
match[3] = wbcir_to_rc6cells(wake_sc >> 12);
|
|
mask[3] = 0xFF;
|
|
|
|
/* Header */
|
|
match[4] = 0x50; /* mode1 = mode0 = 0, ignore toggle */
|
|
mask[4] = 0xF0;
|
|
match[5] = 0x09; /* start bit = 1, mode2 = 0 */
|
|
mask[5] = 0x0F;
|
|
|
|
rc6_csl = 44;
|
|
|
|
} else if (wake_rc6mode == 6) {
|
|
i = 0;
|
|
|
|
/* Command */
|
|
match[i] = wbcir_to_rc6cells(wake_sc >> 0);
|
|
mask[i++] = 0xFF;
|
|
match[i] = wbcir_to_rc6cells(wake_sc >> 4);
|
|
mask[i++] = 0xFF;
|
|
|
|
/* Address + Toggle */
|
|
match[i] = wbcir_to_rc6cells(wake_sc >> 8);
|
|
mask[i++] = 0xFF;
|
|
match[i] = wbcir_to_rc6cells(wake_sc >> 12);
|
|
mask[i++] = 0x3F;
|
|
|
|
/* Customer bits 7 - 0 */
|
|
match[i] = wbcir_to_rc6cells(wake_sc >> 16);
|
|
mask[i++] = 0xFF;
|
|
match[i] = wbcir_to_rc6cells(wake_sc >> 20);
|
|
mask[i++] = 0xFF;
|
|
|
|
if (wake_sc & 0x80000000) {
|
|
/* Customer range bit and bits 15 - 8 */
|
|
match[i] = wbcir_to_rc6cells(wake_sc >> 24);
|
|
mask[i++] = 0xFF;
|
|
match[i] = wbcir_to_rc6cells(wake_sc >> 28);
|
|
mask[i++] = 0xFF;
|
|
rc6_csl = 76;
|
|
} else if (wake_sc <= 0x007FFFFF) {
|
|
rc6_csl = 60;
|
|
} else {
|
|
do_wake = false;
|
|
dev_err(dev, "RC6 - Invalid wake scancode\n");
|
|
break;
|
|
}
|
|
|
|
/* Header */
|
|
match[i] = 0x93; /* mode1 = mode0 = 1, submode = 0 */
|
|
mask[i++] = 0xFF;
|
|
match[i] = 0x0A; /* start bit = 1, mode2 = 1 */
|
|
mask[i++] = 0x0F;
|
|
|
|
} else {
|
|
do_wake = false;
|
|
dev_err(dev, "RC6 - Invalid wake mode\n");
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
do_wake = false;
|
|
break;
|
|
}
|
|
|
|
finish:
|
|
if (do_wake) {
|
|
/* Set compare and compare mask */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_INDEX,
|
|
WBCIR_REGSEL_COMPARE | WBCIR_REG_ADDR0,
|
|
0x3F);
|
|
outsb(data->wbase + WBCIR_REG_WCEIR_DATA, match, 11);
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_INDEX,
|
|
WBCIR_REGSEL_MASK | WBCIR_REG_ADDR0,
|
|
0x3F);
|
|
outsb(data->wbase + WBCIR_REG_WCEIR_DATA, mask, 11);
|
|
|
|
/* RC6 Compare String Len */
|
|
outb(rc6_csl, data->wbase + WBCIR_REG_WCEIR_CSL);
|
|
|
|
/* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_STS, 0x17, 0x17);
|
|
|
|
/* Clear BUFF_EN, Clear END_EN, Set MATCH_EN */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x01, 0x07);
|
|
|
|
/* Set CEIR_EN */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x01, 0x01);
|
|
|
|
} else {
|
|
/* Clear BUFF_EN, Clear END_EN, Clear MATCH_EN */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
|
|
|
|
/* Clear CEIR_EN */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x00, 0x01);
|
|
}
|
|
|
|
/*
|
|
* ACPI will set the HW disable bit for SP3 which means that the
|
|
* output signals are left in an undefined state which may cause
|
|
* spurious interrupts which we need to ignore until the hardware
|
|
* is reinitialized.
|
|
*/
|
|
wbcir_set_irqmask(data, WBCIR_IRQ_NONE);
|
|
disable_irq(data->irq);
|
|
|
|
/* Disable LED */
|
|
led_trigger_event(data->rxtrigger, LED_OFF);
|
|
led_trigger_event(data->txtrigger, LED_OFF);
|
|
}
|
|
|
|
static int
|
|
wbcir_suspend(struct pnp_dev *device, pm_message_t state)
|
|
{
|
|
wbcir_shutdown(device);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
wbcir_init_hw(struct wbcir_data *data)
|
|
{
|
|
u8 tmp;
|
|
|
|
/* Disable interrupts */
|
|
wbcir_set_irqmask(data, WBCIR_IRQ_NONE);
|
|
|
|
/* Set PROT_SEL, RX_INV, Clear CEIR_EN (needed for the led) */
|
|
tmp = protocol << 4;
|
|
if (invert)
|
|
tmp |= 0x08;
|
|
outb(tmp, data->wbase + WBCIR_REG_WCEIR_CTL);
|
|
|
|
/* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_STS, 0x17, 0x17);
|
|
|
|
/* Clear BUFF_EN, Clear END_EN, Clear MATCH_EN */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
|
|
|
|
/* Set RC5 cell time to correspond to 36 kHz */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CFG1, 0x4A, 0x7F);
|
|
|
|
/* Set IRTX_INV */
|
|
if (invert)
|
|
outb(WBCIR_IRTX_INV, data->ebase + WBCIR_REG_ECEIR_CCTL);
|
|
else
|
|
outb(0x00, data->ebase + WBCIR_REG_ECEIR_CCTL);
|
|
|
|
/*
|
|
* Clear IR LED, set SP3 clock to 24Mhz, set TX mask to IRTX1,
|
|
* set SP3_IRRX_SW to binary 01, helpfully not documented
|
|
*/
|
|
outb(0x10, data->ebase + WBCIR_REG_ECEIR_CTS);
|
|
data->txmask = 0x1;
|
|
|
|
/* Enable extended mode */
|
|
wbcir_select_bank(data, WBCIR_BANK_2);
|
|
outb(WBCIR_EXT_ENABLE, data->sbase + WBCIR_REG_SP3_EXCR1);
|
|
|
|
/*
|
|
* Configure baud generator, IR data will be sampled at
|
|
* a bitrate of: (24Mhz * prescaler) / (divisor * 16).
|
|
*
|
|
* The ECIR registers include a flag to change the
|
|
* 24Mhz clock freq to 48Mhz.
|
|
*
|
|
* It's not documented in the specs, but fifo levels
|
|
* other than 16 seems to be unsupported.
|
|
*/
|
|
|
|
/* prescaler 1.0, tx/rx fifo lvl 16 */
|
|
outb(0x30, data->sbase + WBCIR_REG_SP3_EXCR2);
|
|
|
|
/* Set baud divisor to sample every 10 us */
|
|
outb(0x0f, data->sbase + WBCIR_REG_SP3_BGDL);
|
|
outb(0x00, data->sbase + WBCIR_REG_SP3_BGDH);
|
|
|
|
/* Set CEIR mode */
|
|
wbcir_select_bank(data, WBCIR_BANK_0);
|
|
outb(0xC0, data->sbase + WBCIR_REG_SP3_MCR);
|
|
inb(data->sbase + WBCIR_REG_SP3_LSR); /* Clear LSR */
|
|
inb(data->sbase + WBCIR_REG_SP3_MSR); /* Clear MSR */
|
|
|
|
/* Disable RX demod, enable run-length enc/dec, set freq span */
|
|
wbcir_select_bank(data, WBCIR_BANK_7);
|
|
outb(0x90, data->sbase + WBCIR_REG_SP3_RCCFG);
|
|
|
|
/* Disable timer */
|
|
wbcir_select_bank(data, WBCIR_BANK_4);
|
|
outb(0x00, data->sbase + WBCIR_REG_SP3_IRCR1);
|
|
|
|
/* Disable MSR interrupt, clear AUX_IRX, mask RX during TX? */
|
|
wbcir_select_bank(data, WBCIR_BANK_5);
|
|
outb(txandrx ? 0x03 : 0x02, data->sbase + WBCIR_REG_SP3_IRCR2);
|
|
|
|
/* Disable CRC */
|
|
wbcir_select_bank(data, WBCIR_BANK_6);
|
|
outb(0x20, data->sbase + WBCIR_REG_SP3_IRCR3);
|
|
|
|
/* Set RX demodulation freq, not really used */
|
|
wbcir_select_bank(data, WBCIR_BANK_7);
|
|
outb(0xF2, data->sbase + WBCIR_REG_SP3_IRRXDC);
|
|
|
|
/* Set TX modulation, 36kHz, 7us pulse width */
|
|
outb(0x69, data->sbase + WBCIR_REG_SP3_IRTXMC);
|
|
data->txcarrier = 36000;
|
|
|
|
/* Set invert and pin direction */
|
|
if (invert)
|
|
outb(0x10, data->sbase + WBCIR_REG_SP3_IRCFG4);
|
|
else
|
|
outb(0x00, data->sbase + WBCIR_REG_SP3_IRCFG4);
|
|
|
|
/* Set FIFO thresholds (RX = 8, TX = 3), reset RX/TX */
|
|
wbcir_select_bank(data, WBCIR_BANK_0);
|
|
outb(0x97, data->sbase + WBCIR_REG_SP3_FCR);
|
|
|
|
/* Clear AUX status bits */
|
|
outb(0xE0, data->sbase + WBCIR_REG_SP3_ASCR);
|
|
|
|
/* Clear RX state */
|
|
data->rxstate = WBCIR_RXSTATE_INACTIVE;
|
|
ir_raw_event_reset(data->dev);
|
|
ir_raw_event_set_idle(data->dev, true);
|
|
|
|
/* Clear TX state */
|
|
if (data->txstate == WBCIR_TXSTATE_ACTIVE) {
|
|
kfree(data->txbuf);
|
|
data->txbuf = NULL;
|
|
data->txstate = WBCIR_TXSTATE_INACTIVE;
|
|
}
|
|
|
|
/* Enable interrupts */
|
|
wbcir_set_irqmask(data, WBCIR_IRQ_RX | WBCIR_IRQ_ERR);
|
|
}
|
|
|
|
static int
|
|
wbcir_resume(struct pnp_dev *device)
|
|
{
|
|
struct wbcir_data *data = pnp_get_drvdata(device);
|
|
|
|
wbcir_init_hw(data);
|
|
enable_irq(data->irq);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
wbcir_probe(struct pnp_dev *device, const struct pnp_device_id *dev_id)
|
|
{
|
|
struct device *dev = &device->dev;
|
|
struct wbcir_data *data;
|
|
int err;
|
|
|
|
if (!(pnp_port_len(device, 0) == EHFUNC_IOMEM_LEN &&
|
|
pnp_port_len(device, 1) == WAKEUP_IOMEM_LEN &&
|
|
pnp_port_len(device, 2) == SP_IOMEM_LEN)) {
|
|
dev_err(dev, "Invalid resources\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
|
if (!data) {
|
|
err = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
pnp_set_drvdata(device, data);
|
|
|
|
spin_lock_init(&data->spinlock);
|
|
data->ebase = pnp_port_start(device, 0);
|
|
data->wbase = pnp_port_start(device, 1);
|
|
data->sbase = pnp_port_start(device, 2);
|
|
data->irq = pnp_irq(device, 0);
|
|
|
|
if (data->wbase == 0 || data->ebase == 0 ||
|
|
data->sbase == 0 || data->irq == 0) {
|
|
err = -ENODEV;
|
|
dev_err(dev, "Invalid resources\n");
|
|
goto exit_free_data;
|
|
}
|
|
|
|
dev_dbg(&device->dev, "Found device "
|
|
"(w: 0x%lX, e: 0x%lX, s: 0x%lX, i: %u)\n",
|
|
data->wbase, data->ebase, data->sbase, data->irq);
|
|
|
|
led_trigger_register_simple("cir-tx", &data->txtrigger);
|
|
if (!data->txtrigger) {
|
|
err = -ENOMEM;
|
|
goto exit_free_data;
|
|
}
|
|
|
|
led_trigger_register_simple("cir-rx", &data->rxtrigger);
|
|
if (!data->rxtrigger) {
|
|
err = -ENOMEM;
|
|
goto exit_unregister_txtrigger;
|
|
}
|
|
|
|
data->led.name = "cir::activity";
|
|
data->led.default_trigger = "cir-rx";
|
|
data->led.brightness_set = wbcir_led_brightness_set;
|
|
data->led.brightness_get = wbcir_led_brightness_get;
|
|
err = led_classdev_register(&device->dev, &data->led);
|
|
if (err)
|
|
goto exit_unregister_rxtrigger;
|
|
|
|
data->dev = rc_allocate_device();
|
|
if (!data->dev) {
|
|
err = -ENOMEM;
|
|
goto exit_unregister_led;
|
|
}
|
|
|
|
data->dev->driver_type = RC_DRIVER_IR_RAW;
|
|
data->dev->driver_name = DRVNAME;
|
|
data->dev->input_name = WBCIR_NAME;
|
|
data->dev->input_phys = "wbcir/cir0";
|
|
data->dev->input_id.bustype = BUS_HOST;
|
|
data->dev->input_id.vendor = PCI_VENDOR_ID_WINBOND;
|
|
data->dev->input_id.product = WBCIR_ID_FAMILY;
|
|
data->dev->input_id.version = WBCIR_ID_CHIP;
|
|
data->dev->map_name = RC_MAP_RC6_MCE;
|
|
data->dev->s_idle = wbcir_idle_rx;
|
|
data->dev->s_carrier_report = wbcir_set_carrier_report;
|
|
data->dev->s_tx_mask = wbcir_txmask;
|
|
data->dev->s_tx_carrier = wbcir_txcarrier;
|
|
data->dev->tx_ir = wbcir_tx;
|
|
data->dev->priv = data;
|
|
data->dev->dev.parent = &device->dev;
|
|
data->dev->timeout = MS_TO_NS(100);
|
|
data->dev->rx_resolution = US_TO_NS(2);
|
|
data->dev->allowed_protos = RC_BIT_ALL;
|
|
|
|
err = rc_register_device(data->dev);
|
|
if (err)
|
|
goto exit_free_rc;
|
|
|
|
if (!request_region(data->wbase, WAKEUP_IOMEM_LEN, DRVNAME)) {
|
|
dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
|
|
data->wbase, data->wbase + WAKEUP_IOMEM_LEN - 1);
|
|
err = -EBUSY;
|
|
goto exit_unregister_device;
|
|
}
|
|
|
|
if (!request_region(data->ebase, EHFUNC_IOMEM_LEN, DRVNAME)) {
|
|
dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
|
|
data->ebase, data->ebase + EHFUNC_IOMEM_LEN - 1);
|
|
err = -EBUSY;
|
|
goto exit_release_wbase;
|
|
}
|
|
|
|
if (!request_region(data->sbase, SP_IOMEM_LEN, DRVNAME)) {
|
|
dev_err(dev, "Region 0x%lx-0x%lx already in use!\n",
|
|
data->sbase, data->sbase + SP_IOMEM_LEN - 1);
|
|
err = -EBUSY;
|
|
goto exit_release_ebase;
|
|
}
|
|
|
|
err = request_irq(data->irq, wbcir_irq_handler,
|
|
IRQF_DISABLED, DRVNAME, device);
|
|
if (err) {
|
|
dev_err(dev, "Failed to claim IRQ %u\n", data->irq);
|
|
err = -EBUSY;
|
|
goto exit_release_sbase;
|
|
}
|
|
|
|
device_init_wakeup(&device->dev, 1);
|
|
|
|
wbcir_init_hw(data);
|
|
|
|
return 0;
|
|
|
|
exit_release_sbase:
|
|
release_region(data->sbase, SP_IOMEM_LEN);
|
|
exit_release_ebase:
|
|
release_region(data->ebase, EHFUNC_IOMEM_LEN);
|
|
exit_release_wbase:
|
|
release_region(data->wbase, WAKEUP_IOMEM_LEN);
|
|
exit_unregister_device:
|
|
rc_unregister_device(data->dev);
|
|
exit_free_rc:
|
|
rc_free_device(data->dev);
|
|
exit_unregister_led:
|
|
led_classdev_unregister(&data->led);
|
|
exit_unregister_rxtrigger:
|
|
led_trigger_unregister_simple(data->rxtrigger);
|
|
exit_unregister_txtrigger:
|
|
led_trigger_unregister_simple(data->txtrigger);
|
|
exit_free_data:
|
|
kfree(data);
|
|
pnp_set_drvdata(device, NULL);
|
|
exit:
|
|
return err;
|
|
}
|
|
|
|
static void
|
|
wbcir_remove(struct pnp_dev *device)
|
|
{
|
|
struct wbcir_data *data = pnp_get_drvdata(device);
|
|
|
|
/* Disable interrupts */
|
|
wbcir_set_irqmask(data, WBCIR_IRQ_NONE);
|
|
free_irq(data->irq, device);
|
|
|
|
/* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_STS, 0x17, 0x17);
|
|
|
|
/* Clear CEIR_EN */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_CTL, 0x00, 0x01);
|
|
|
|
/* Clear BUFF_EN, END_EN, MATCH_EN */
|
|
wbcir_set_bits(data->wbase + WBCIR_REG_WCEIR_EV_EN, 0x00, 0x07);
|
|
|
|
rc_unregister_device(data->dev);
|
|
|
|
led_trigger_unregister_simple(data->rxtrigger);
|
|
led_trigger_unregister_simple(data->txtrigger);
|
|
led_classdev_unregister(&data->led);
|
|
|
|
/* This is ok since &data->led isn't actually used */
|
|
wbcir_led_brightness_set(&data->led, LED_OFF);
|
|
|
|
release_region(data->wbase, WAKEUP_IOMEM_LEN);
|
|
release_region(data->ebase, EHFUNC_IOMEM_LEN);
|
|
release_region(data->sbase, SP_IOMEM_LEN);
|
|
|
|
kfree(data);
|
|
|
|
pnp_set_drvdata(device, NULL);
|
|
}
|
|
|
|
static const struct pnp_device_id wbcir_ids[] = {
|
|
{ "WEC1022", 0 },
|
|
{ "", 0 }
|
|
};
|
|
MODULE_DEVICE_TABLE(pnp, wbcir_ids);
|
|
|
|
static struct pnp_driver wbcir_driver = {
|
|
.name = WBCIR_NAME,
|
|
.id_table = wbcir_ids,
|
|
.probe = wbcir_probe,
|
|
.remove = wbcir_remove,
|
|
.suspend = wbcir_suspend,
|
|
.resume = wbcir_resume,
|
|
.shutdown = wbcir_shutdown
|
|
};
|
|
|
|
static int __init
|
|
wbcir_init(void)
|
|
{
|
|
int ret;
|
|
|
|
switch (protocol) {
|
|
case IR_PROTOCOL_RC5:
|
|
case IR_PROTOCOL_NEC:
|
|
case IR_PROTOCOL_RC6:
|
|
break;
|
|
default:
|
|
pr_err("Invalid power-on protocol\n");
|
|
}
|
|
|
|
ret = pnp_register_driver(&wbcir_driver);
|
|
if (ret)
|
|
pr_err("Unable to register driver\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void __exit
|
|
wbcir_exit(void)
|
|
{
|
|
pnp_unregister_driver(&wbcir_driver);
|
|
}
|
|
|
|
module_init(wbcir_init);
|
|
module_exit(wbcir_exit);
|
|
|
|
MODULE_AUTHOR("David Härdeman <david@hardeman.nu>");
|
|
MODULE_DESCRIPTION("Winbond SuperI/O Consumer IR Driver");
|
|
MODULE_LICENSE("GPL");
|