From patchwork Wed Mar 16 20:14:53 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jarod Wilson X-Patchwork-Id: 639731 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p2GKF9in027545 for ; Wed, 16 Mar 2011 20:15:09 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753761Ab1CPUPI (ORCPT ); Wed, 16 Mar 2011 16:15:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:24303 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753528Ab1CPUPG (ORCPT ); Wed, 16 Mar 2011 16:15:06 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p2GKF5W6030249 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 16 Mar 2011 16:15:05 -0400 Received: from xavier.bos.redhat.com (xavier.bos.redhat.com [10.16.16.50]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id p2GKEvXQ008618; Wed, 16 Mar 2011 16:15:04 -0400 From: Jarod Wilson To: linux-media@vger.kernel.org Cc: "Juan J. Garcia de Soria" , Jarod Wilson Subject: [PATCH 2/2] lirc: remove staging lirc_it87 and lirc_ite8709 drivers Date: Wed, 16 Mar 2011 16:14:53 -0400 Message-Id: <1300306493-18921-2-git-send-email-jarod@redhat.com> In-Reply-To: <1300306493-18921-1-git-send-email-jarod@redhat.com> References: <1300306493-18921-1-git-send-email-jarod@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.23 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Wed, 16 Mar 2011 20:15:10 +0000 (UTC) diff --git a/drivers/staging/lirc/Kconfig b/drivers/staging/lirc/Kconfig index cdaff59..526ec0f 100644 --- a/drivers/staging/lirc/Kconfig +++ b/drivers/staging/lirc/Kconfig @@ -32,18 +32,6 @@ config LIRC_IMON Current generation iMON devices use the input layer imon driver. -config LIRC_IT87 - tristate "ITE IT87XX CIR Port Receiver" - depends on LIRC && PNP - help - Driver for the ITE IT87xx IR Receiver - -config LIRC_ITE8709 - tristate "ITE8709 CIR Port Receiver" - depends on LIRC && PNP - help - Driver for the ITE8709 IR Receiver - config LIRC_PARALLEL tristate "Homebrew Parallel Port Receiver" depends on LIRC && PARPORT diff --git a/drivers/staging/lirc/Makefile b/drivers/staging/lirc/Makefile index 94af218..d76b0fa 100644 --- a/drivers/staging/lirc/Makefile +++ b/drivers/staging/lirc/Makefile @@ -6,8 +6,6 @@ obj-$(CONFIG_LIRC_BT829) += lirc_bt829.o obj-$(CONFIG_LIRC_IGORPLUGUSB) += lirc_igorplugusb.o obj-$(CONFIG_LIRC_IMON) += lirc_imon.o -obj-$(CONFIG_LIRC_IT87) += lirc_it87.o -obj-$(CONFIG_LIRC_ITE8709) += lirc_ite8709.o obj-$(CONFIG_LIRC_PARALLEL) += lirc_parallel.o obj-$(CONFIG_LIRC_SASEM) += lirc_sasem.o obj-$(CONFIG_LIRC_SERIAL) += lirc_serial.o diff --git a/drivers/staging/lirc/lirc_it87.c b/drivers/staging/lirc/lirc_it87.c deleted file mode 100644 index 5938616..0000000 --- a/drivers/staging/lirc/lirc_it87.c +++ /dev/null @@ -1,1027 +0,0 @@ -/* - * LIRC driver for ITE IT8712/IT8705 CIR port - * - * Copyright (C) 2001 Hans-Gunter Lutke Uphues - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - * USA - * - * ITE IT8705 and IT8712(not tested) and IT8720 CIR-port support for lirc based - * via cut and paste from lirc_sir.c (C) 2000 Milan Pikula - * - * Attention: Sendmode only tested with debugging logs - * - * 2001/02/27 Christoph Bartelmus : - * reimplemented read function - * 2005/06/05 Andrew Calkin implemented support for Asus Digimatrix, - * based on work of the following member of the Outertrack Digimatrix - * Forum: Art103 - * 2009/12/24 James Edwards implemeted support - * for ITE8704/ITE8718, on my machine, the DSDT reports 8704, but the - * chip identifies as 18. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include -#include - -#include "lirc_it87.h" - -#ifdef LIRC_IT87_DIGIMATRIX -static int digimatrix = 1; -static int it87_freq = 36; /* kHz */ -static int irq = 9; -#else -static int digimatrix; -static int it87_freq = 38; /* kHz */ -static int irq = IT87_CIR_DEFAULT_IRQ; -#endif - -static unsigned long it87_bits_in_byte_out; -static unsigned long it87_send_counter; -static unsigned char it87_RXEN_mask = IT87_CIR_RCR_RXEN; - -#define RBUF_LEN 1024 - -#define LIRC_DRIVER_NAME "lirc_it87" - -/* timeout for sequences in jiffies (=5/100s) */ -/* must be longer than TIME_CONST */ -#define IT87_TIMEOUT (HZ*5/100) - -/* module parameters */ -static int debug; -#define dprintk(fmt, args...) \ - do { \ - if (debug) \ - printk(KERN_DEBUG LIRC_DRIVER_NAME ": " \ - fmt, ## args); \ - } while (0) - -static int io = IT87_CIR_DEFAULT_IOBASE; -/* receiver demodulator default: off */ -static int it87_enable_demodulator; - -static int timer_enabled; -static DEFINE_SPINLOCK(timer_lock); -static struct timer_list timerlist; -/* time of last signal change detected */ -static struct timeval last_tv = {0, 0}; -/* time of last UART data ready interrupt */ -static struct timeval last_intr_tv = {0, 0}; -static int last_value; - -static DECLARE_WAIT_QUEUE_HEAD(lirc_read_queue); - -static DEFINE_SPINLOCK(hardware_lock); -static DEFINE_SPINLOCK(dev_lock); -static bool device_open; - -static int rx_buf[RBUF_LEN]; -unsigned int rx_tail, rx_head; - -static struct pnp_driver it87_pnp_driver; - -/* SECTION: Prototypes */ - -/* Communication with user-space */ -static int lirc_open(struct inode *inode, struct file *file); -static int lirc_close(struct inode *inode, struct file *file); -static unsigned int lirc_poll(struct file *file, poll_table *wait); -static ssize_t lirc_read(struct file *file, char *buf, - size_t count, loff_t *ppos); -static ssize_t lirc_write(struct file *file, const char *buf, - size_t n, loff_t *pos); -static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); -static void add_read_queue(int flag, unsigned long val); -static int init_chrdev(void); -static void drop_chrdev(void); -/* Hardware */ -static irqreturn_t it87_interrupt(int irq, void *dev_id); -static void send_space(unsigned long len); -static void send_pulse(unsigned long len); -static void init_send(void); -static void terminate_send(unsigned long len); -static int init_hardware(void); -static void drop_hardware(void); -/* Initialisation */ -static int init_port(void); -static void drop_port(void); - - -/* SECTION: Communication with user-space */ - -static int lirc_open(struct inode *inode, struct file *file) -{ - spin_lock(&dev_lock); - if (device_open) { - spin_unlock(&dev_lock); - return -EBUSY; - } - device_open = true; - spin_unlock(&dev_lock); - return 0; -} - - -static int lirc_close(struct inode *inode, struct file *file) -{ - spin_lock(&dev_lock); - device_open = false; - spin_unlock(&dev_lock); - return 0; -} - - -static unsigned int lirc_poll(struct file *file, poll_table *wait) -{ - poll_wait(file, &lirc_read_queue, wait); - if (rx_head != rx_tail) - return POLLIN | POLLRDNORM; - return 0; -} - - -static ssize_t lirc_read(struct file *file, char *buf, - size_t count, loff_t *ppos) -{ - int n = 0; - int retval = 0; - - while (n < count) { - if (file->f_flags & O_NONBLOCK && rx_head == rx_tail) { - retval = -EAGAIN; - break; - } - retval = wait_event_interruptible(lirc_read_queue, - rx_head != rx_tail); - if (retval) - break; - - if (copy_to_user((void *) buf + n, (void *) (rx_buf + rx_head), - sizeof(int))) { - retval = -EFAULT; - break; - } - rx_head = (rx_head + 1) & (RBUF_LEN - 1); - n += sizeof(int); - } - if (n) - return n; - return retval; -} - - -static ssize_t lirc_write(struct file *file, const char *buf, - size_t n, loff_t *pos) -{ - int i = 0; - int *tx_buf; - - if (n % sizeof(int)) - return -EINVAL; - tx_buf = memdup_user(buf, n); - if (IS_ERR(tx_buf)) - return PTR_ERR(tx_buf); - n /= sizeof(int); - init_send(); - while (1) { - if (i >= n) - break; - if (tx_buf[i]) - send_pulse(tx_buf[i]); - i++; - if (i >= n) - break; - if (tx_buf[i]) - send_space(tx_buf[i]); - i++; - } - terminate_send(tx_buf[i - 1]); - kfree(tx_buf); - return n; -} - - -static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) -{ - int retval = 0; - __u32 value = 0; - unsigned long hw_flags; - - if (cmd == LIRC_GET_FEATURES) - value = LIRC_CAN_SEND_PULSE | - LIRC_CAN_SET_SEND_CARRIER | - LIRC_CAN_REC_MODE2; - else if (cmd == LIRC_GET_SEND_MODE) - value = LIRC_MODE_PULSE; - else if (cmd == LIRC_GET_REC_MODE) - value = LIRC_MODE_MODE2; - - switch (cmd) { - case LIRC_GET_FEATURES: - case LIRC_GET_SEND_MODE: - case LIRC_GET_REC_MODE: - retval = put_user(value, (__u32 *) arg); - break; - - case LIRC_SET_SEND_MODE: - case LIRC_SET_REC_MODE: - retval = get_user(value, (__u32 *) arg); - break; - - case LIRC_SET_SEND_CARRIER: - retval = get_user(value, (__u32 *) arg); - if (retval) - return retval; - value /= 1000; - if (value > IT87_CIR_FREQ_MAX || - value < IT87_CIR_FREQ_MIN) - return -EINVAL; - - it87_freq = value; - - spin_lock_irqsave(&hardware_lock, hw_flags); - outb(((inb(io + IT87_CIR_TCR2) & IT87_CIR_TCR2_TXMPW) | - (it87_freq - IT87_CIR_FREQ_MIN) << 3), - io + IT87_CIR_TCR2); - spin_unlock_irqrestore(&hardware_lock, hw_flags); - dprintk("demodulation frequency: %d kHz\n", it87_freq); - - break; - - default: - retval = -EINVAL; - } - - if (retval) - return retval; - - if (cmd == LIRC_SET_REC_MODE) { - if (value != LIRC_MODE_MODE2) - retval = -ENOSYS; - } else if (cmd == LIRC_SET_SEND_MODE) { - if (value != LIRC_MODE_PULSE) - retval = -ENOSYS; - } - return retval; -} - -static void add_read_queue(int flag, unsigned long val) -{ - unsigned int new_rx_tail; - int newval; - - dprintk("add flag %d with val %lu\n", flag, val); - - newval = val & PULSE_MASK; - - /* - * statistically, pulses are ~TIME_CONST/2 too long. we could - * maybe make this more exact, but this is good enough - */ - if (flag) { - /* pulse */ - if (newval > TIME_CONST / 2) - newval -= TIME_CONST / 2; - else /* should not ever happen */ - newval = 1; - newval |= PULSE_BIT; - } else - newval += TIME_CONST / 2; - new_rx_tail = (rx_tail + 1) & (RBUF_LEN - 1); - if (new_rx_tail == rx_head) { - dprintk("Buffer overrun.\n"); - return; - } - rx_buf[rx_tail] = newval; - rx_tail = new_rx_tail; - wake_up_interruptible(&lirc_read_queue); -} - - -static const struct file_operations lirc_fops = { - .owner = THIS_MODULE, - .read = lirc_read, - .write = lirc_write, - .poll = lirc_poll, - .unlocked_ioctl = lirc_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = lirc_ioctl, -#endif - .open = lirc_open, - .release = lirc_close, - .llseek = noop_llseek, -}; - -static int set_use_inc(void *data) -{ - return 0; -} - -static void set_use_dec(void *data) -{ -} - -static struct lirc_driver driver = { - .name = LIRC_DRIVER_NAME, - .minor = -1, - .code_length = 1, - .sample_rate = 0, - .data = NULL, - .add_to_buf = NULL, - .set_use_inc = set_use_inc, - .set_use_dec = set_use_dec, - .fops = &lirc_fops, - .dev = NULL, - .owner = THIS_MODULE, -}; - - -static int init_chrdev(void) -{ - driver.minor = lirc_register_driver(&driver); - - if (driver.minor < 0) { - printk(KERN_ERR LIRC_DRIVER_NAME ": init_chrdev() failed.\n"); - return -EIO; - } - return 0; -} - - -static void drop_chrdev(void) -{ - lirc_unregister_driver(driver.minor); -} - - -/* SECTION: Hardware */ -static long delta(struct timeval *tv1, struct timeval *tv2) -{ - unsigned long deltv; - - deltv = tv2->tv_sec - tv1->tv_sec; - if (deltv > 15) - deltv = 0xFFFFFF; - else - deltv = deltv*1000000 + tv2->tv_usec - tv1->tv_usec; - return deltv; -} - -static void it87_timeout(unsigned long data) -{ - unsigned long flags; - - /* avoid interference with interrupt */ - spin_lock_irqsave(&timer_lock, flags); - - if (digimatrix) { - /* We have timed out. Disable the RX mechanism. */ - - outb((inb(io + IT87_CIR_RCR) & ~IT87_CIR_RCR_RXEN) | - IT87_CIR_RCR_RXACT, io + IT87_CIR_RCR); - if (it87_RXEN_mask) - outb(inb(io + IT87_CIR_RCR) | IT87_CIR_RCR_RXEN, - io + IT87_CIR_RCR); - dprintk(" TIMEOUT\n"); - timer_enabled = 0; - - /* fifo clear */ - outb(inb(io + IT87_CIR_TCR1) | IT87_CIR_TCR1_FIFOCLR, - io+IT87_CIR_TCR1); - - } else { - /* - * if last received signal was a pulse, but receiving stopped - * within the 9 bit frame, we need to finish this pulse and - * simulate a signal change to from pulse to space. Otherwise - * upper layers will receive two sequences next time. - */ - - if (last_value) { - unsigned long pulse_end; - - /* determine 'virtual' pulse end: */ - pulse_end = delta(&last_tv, &last_intr_tv); - dprintk("timeout add %d for %lu usec\n", - last_value, pulse_end); - add_read_queue(last_value, pulse_end); - last_value = 0; - last_tv = last_intr_tv; - } - } - spin_unlock_irqrestore(&timer_lock, flags); -} - -static irqreturn_t it87_interrupt(int irq, void *dev_id) -{ - unsigned char data; - struct timeval curr_tv; - static unsigned long deltv; - unsigned long deltintrtv; - unsigned long flags, hw_flags; - int iir, lsr; - int fifo = 0; - static char lastbit; - char bit; - - /* Bit duration in microseconds */ - const unsigned long bit_duration = 1000000ul / - (115200 / IT87_CIR_BAUDRATE_DIVISOR); - - - iir = inb(io + IT87_CIR_IIR); - - switch (iir & IT87_CIR_IIR_IID) { - case 0x4: - case 0x6: - lsr = inb(io + IT87_CIR_RSR) & (IT87_CIR_RSR_RXFTO | - IT87_CIR_RSR_RXFBC); - fifo = lsr & IT87_CIR_RSR_RXFBC; - dprintk("iir: 0x%x fifo: 0x%x\n", iir, lsr); - - /* avoid interference with timer */ - spin_lock_irqsave(&timer_lock, flags); - spin_lock_irqsave(&hardware_lock, hw_flags); - if (digimatrix) { - static unsigned long acc_pulse; - static unsigned long acc_space; - - do { - data = inb(io + IT87_CIR_DR); - data = ~data; - fifo--; - if (data != 0x00) { - if (timer_enabled) - del_timer(&timerlist); - /* - * start timer for end of - * sequence detection - */ - timerlist.expires = jiffies + - IT87_TIMEOUT; - add_timer(&timerlist); - timer_enabled = 1; - } - /* Loop through */ - for (bit = 0; bit < 8; ++bit) { - if ((data >> bit) & 1) { - ++acc_pulse; - if (lastbit == 0) { - add_read_queue(0, - acc_space * - bit_duration); - acc_space = 0; - } - } else { - ++acc_space; - if (lastbit == 1) { - add_read_queue(1, - acc_pulse * - bit_duration); - acc_pulse = 0; - } - } - lastbit = (data >> bit) & 1; - } - - } while (fifo != 0); - } else { /* Normal Operation */ - do { - del_timer(&timerlist); - data = inb(io + IT87_CIR_DR); - - dprintk("data=%02x\n", data); - do_gettimeofday(&curr_tv); - deltv = delta(&last_tv, &curr_tv); - deltintrtv = delta(&last_intr_tv, &curr_tv); - - dprintk("t %lu , d %d\n", - deltintrtv, (int)data); - - /* - * if nothing came in last 2 cycles, - * it was gap - */ - if (deltintrtv > TIME_CONST * 2) { - if (last_value) { - dprintk("GAP\n"); - - /* simulate signal change */ - add_read_queue(last_value, - deltv - - deltintrtv); - last_value = 0; - last_tv.tv_sec = - last_intr_tv.tv_sec; - last_tv.tv_usec = - last_intr_tv.tv_usec; - deltv = deltintrtv; - } - } - data = 1; - if (data ^ last_value) { - /* - * deltintrtv > 2*TIME_CONST, - * remember ? the other case is - * timeout - */ - add_read_queue(last_value, - deltv-TIME_CONST); - last_value = data; - last_tv = curr_tv; - if (last_tv.tv_usec >= TIME_CONST) - last_tv.tv_usec -= TIME_CONST; - else { - last_tv.tv_sec--; - last_tv.tv_usec += 1000000 - - TIME_CONST; - } - } - last_intr_tv = curr_tv; - if (data) { - /* - * start timer for end of - * sequence detection - */ - timerlist.expires = - jiffies + IT87_TIMEOUT; - add_timer(&timerlist); - } - outb((inb(io + IT87_CIR_RCR) & - ~IT87_CIR_RCR_RXEN) | - IT87_CIR_RCR_RXACT, - io + IT87_CIR_RCR); - if (it87_RXEN_mask) - outb(inb(io + IT87_CIR_RCR) | - IT87_CIR_RCR_RXEN, - io + IT87_CIR_RCR); - fifo--; - } while (fifo != 0); - } - spin_unlock_irqrestore(&hardware_lock, hw_flags); - spin_unlock_irqrestore(&timer_lock, flags); - - return IRQ_RETVAL(IRQ_HANDLED); - - default: - /* not our irq */ - dprintk("unknown IRQ (shouldn't happen) !!\n"); - return IRQ_RETVAL(IRQ_NONE); - } -} - - -static void send_it87(unsigned long len, unsigned long stime, - unsigned char send_byte, unsigned int count_bits) -{ - long count = len / stime; - long time_left = 0; - static unsigned char byte_out; - unsigned long hw_flags; - - dprintk("%s: len=%ld, sb=%d\n", __func__, len, send_byte); - - time_left = (long)len - (long)count * (long)stime; - count += ((2 * time_left) / stime); - while (count) { - long i = 0; - for (i = 0; i < count_bits; i++) { - byte_out = (byte_out << 1) | (send_byte & 1); - it87_bits_in_byte_out++; - } - if (it87_bits_in_byte_out == 8) { - dprintk("out=0x%x, tsr_txfbc: 0x%x\n", - byte_out, - inb(io + IT87_CIR_TSR) & - IT87_CIR_TSR_TXFBC); - - while ((inb(io + IT87_CIR_TSR) & - IT87_CIR_TSR_TXFBC) >= IT87_CIR_FIFO_SIZE) - ; - - spin_lock_irqsave(&hardware_lock, hw_flags); - outb(byte_out, io + IT87_CIR_DR); - spin_unlock_irqrestore(&hardware_lock, hw_flags); - - it87_bits_in_byte_out = 0; - it87_send_counter++; - byte_out = 0; - } - count--; - } -} - - -/*TODO: maybe exchange space and pulse because it8705 only modulates 0-bits */ - -static void send_space(unsigned long len) -{ - send_it87(len, TIME_CONST, IT87_CIR_SPACE, IT87_CIR_BAUDRATE_DIVISOR); -} - -static void send_pulse(unsigned long len) -{ - send_it87(len, TIME_CONST, IT87_CIR_PULSE, IT87_CIR_BAUDRATE_DIVISOR); -} - - -static void init_send() -{ - unsigned long flags; - - spin_lock_irqsave(&hardware_lock, flags); - /* RXEN=0: receiver disable */ - it87_RXEN_mask = 0; - outb(inb(io + IT87_CIR_RCR) & ~IT87_CIR_RCR_RXEN, - io + IT87_CIR_RCR); - spin_unlock_irqrestore(&hardware_lock, flags); - it87_bits_in_byte_out = 0; - it87_send_counter = 0; -} - - -static void terminate_send(unsigned long len) -{ - unsigned long flags; - unsigned long last = 0; - - last = it87_send_counter; - /* make sure all necessary data has been sent */ - while (last == it87_send_counter) - send_space(len); - /* wait until all data sent */ - while ((inb(io + IT87_CIR_TSR) & IT87_CIR_TSR_TXFBC) != 0) - ; - /* then re-enable receiver */ - spin_lock_irqsave(&hardware_lock, flags); - it87_RXEN_mask = IT87_CIR_RCR_RXEN; - outb(inb(io + IT87_CIR_RCR) | IT87_CIR_RCR_RXEN, - io + IT87_CIR_RCR); - spin_unlock_irqrestore(&hardware_lock, flags); -} - - -static int init_hardware(void) -{ - unsigned long flags; - unsigned char it87_rcr = 0; - - spin_lock_irqsave(&hardware_lock, flags); - /* init cir-port */ - /* enable r/w-access to Baudrate-Register */ - outb(IT87_CIR_IER_BR, io + IT87_CIR_IER); - outb(IT87_CIR_BAUDRATE_DIVISOR % 0x100, io+IT87_CIR_BDLR); - outb(IT87_CIR_BAUDRATE_DIVISOR / 0x100, io+IT87_CIR_BDHR); - /* Baudrate Register off, define IRQs: Input only */ - if (digimatrix) { - outb(IT87_CIR_IER_IEC | IT87_CIR_IER_RFOIE, io + IT87_CIR_IER); - /* RX: HCFS=0, RXDCR = 001b (33,75..38,25 kHz), RXEN=1 */ - } else { - outb(IT87_CIR_IER_IEC | IT87_CIR_IER_RDAIE, io + IT87_CIR_IER); - /* RX: HCFS=0, RXDCR = 001b (35,6..40,3 kHz), RXEN=1 */ - } - it87_rcr = (IT87_CIR_RCR_RXEN & it87_RXEN_mask) | 0x1; - if (it87_enable_demodulator) - it87_rcr |= IT87_CIR_RCR_RXEND; - outb(it87_rcr, io + IT87_CIR_RCR); - if (digimatrix) { - /* Set FIFO depth to 1 byte, and disable TX */ - outb(inb(io + IT87_CIR_TCR1) | 0x00, - io + IT87_CIR_TCR1); - - /* - * TX: it87_freq (36kHz), 'reserved' sensitivity - * setting (0x00) - */ - outb(((it87_freq - IT87_CIR_FREQ_MIN) << 3) | 0x00, - io + IT87_CIR_TCR2); - } else { - /* TX: 38kHz, 13,3us (pulse-width) */ - outb(((it87_freq - IT87_CIR_FREQ_MIN) << 3) | 0x06, - io + IT87_CIR_TCR2); - } - spin_unlock_irqrestore(&hardware_lock, flags); - return 0; -} - - -static void drop_hardware(void) -{ - unsigned long flags; - - spin_lock_irqsave(&hardware_lock, flags); - disable_irq(irq); - /* receiver disable */ - it87_RXEN_mask = 0; - outb(0x1, io + IT87_CIR_RCR); - /* turn off irqs */ - outb(0, io + IT87_CIR_IER); - /* fifo clear */ - outb(IT87_CIR_TCR1_FIFOCLR, io+IT87_CIR_TCR1); - /* reset */ - outb(IT87_CIR_IER_RESET, io+IT87_CIR_IER); - enable_irq(irq); - spin_unlock_irqrestore(&hardware_lock, flags); -} - - -static unsigned char it87_read(unsigned char port) -{ - outb(port, IT87_ADRPORT); - return inb(IT87_DATAPORT); -} - - -static void it87_write(unsigned char port, unsigned char data) -{ - outb(port, IT87_ADRPORT); - outb(data, IT87_DATAPORT); -} - - -/* SECTION: Initialisation */ - -static int init_port(void) -{ - unsigned long hw_flags; - int retval = 0; - - unsigned char init_bytes[4] = IT87_INIT; - unsigned char it87_chipid = 0; - unsigned char ldn = 0; - unsigned int it87_io = 0; - unsigned int it87_irq = 0; - - /* Enter MB PnP Mode */ - outb(init_bytes[0], IT87_ADRPORT); - outb(init_bytes[1], IT87_ADRPORT); - outb(init_bytes[2], IT87_ADRPORT); - outb(init_bytes[3], IT87_ADRPORT); - - /* 8712 or 8705 ? */ - it87_chipid = it87_read(IT87_CHIP_ID1); - if (it87_chipid != 0x87) { - retval = -ENXIO; - return retval; - } - it87_chipid = it87_read(IT87_CHIP_ID2); - if ((it87_chipid != 0x05) && - (it87_chipid != 0x12) && - (it87_chipid != 0x18) && - (it87_chipid != 0x20)) { - printk(KERN_INFO LIRC_DRIVER_NAME - ": no IT8704/05/12/18/20 found (claimed IT87%02x), " - "exiting..\n", it87_chipid); - retval = -ENXIO; - return retval; - } - printk(KERN_INFO LIRC_DRIVER_NAME - ": found IT87%02x.\n", - it87_chipid); - - /* get I/O-Port and IRQ */ - if (it87_chipid == 0x12 || it87_chipid == 0x18) - ldn = IT8712_CIR_LDN; - else - ldn = IT8705_CIR_LDN; - it87_write(IT87_LDN, ldn); - - it87_io = it87_read(IT87_CIR_BASE_MSB) * 256 + - it87_read(IT87_CIR_BASE_LSB); - if (it87_io == 0) { - if (io == 0) - io = IT87_CIR_DEFAULT_IOBASE; - printk(KERN_INFO LIRC_DRIVER_NAME - ": set default io 0x%x\n", - io); - it87_write(IT87_CIR_BASE_MSB, io / 0x100); - it87_write(IT87_CIR_BASE_LSB, io % 0x100); - } else - io = it87_io; - - it87_irq = it87_read(IT87_CIR_IRQ); - if (digimatrix || it87_irq == 0) { - if (irq == 0) - irq = IT87_CIR_DEFAULT_IRQ; - printk(KERN_INFO LIRC_DRIVER_NAME - ": set default irq 0x%x\n", - irq); - it87_write(IT87_CIR_IRQ, irq); - } else - irq = it87_irq; - - spin_lock_irqsave(&hardware_lock, hw_flags); - /* reset */ - outb(IT87_CIR_IER_RESET, io+IT87_CIR_IER); - /* fifo clear */ - outb(IT87_CIR_TCR1_FIFOCLR | - /* IT87_CIR_TCR1_ILE | */ - IT87_CIR_TCR1_TXRLE | - IT87_CIR_TCR1_TXENDF, io+IT87_CIR_TCR1); - spin_unlock_irqrestore(&hardware_lock, hw_flags); - - /* get I/O port access and IRQ line */ - if (request_region(io, 8, LIRC_DRIVER_NAME) == NULL) { - printk(KERN_ERR LIRC_DRIVER_NAME - ": i/o port 0x%.4x already in use.\n", io); - /* Leaving MB PnP Mode */ - it87_write(IT87_CFGCTRL, 0x2); - return -EBUSY; - } - - /* activate CIR-Device */ - it87_write(IT87_CIR_ACT, 0x1); - - /* Leaving MB PnP Mode */ - it87_write(IT87_CFGCTRL, 0x2); - - retval = request_irq(irq, it87_interrupt, 0 /*IRQF_DISABLED*/, - LIRC_DRIVER_NAME, NULL); - if (retval < 0) { - printk(KERN_ERR LIRC_DRIVER_NAME - ": IRQ %d already in use.\n", - irq); - release_region(io, 8); - return retval; - } - - printk(KERN_INFO LIRC_DRIVER_NAME - ": I/O port 0x%.4x, IRQ %d.\n", io, irq); - - init_timer(&timerlist); - timerlist.function = it87_timeout; - timerlist.data = 0xabadcafe; - - return 0; -} - - -static void drop_port(void) -{ -#if 0 - unsigned char init_bytes[4] = IT87_INIT; - - /* Enter MB PnP Mode */ - outb(init_bytes[0], IT87_ADRPORT); - outb(init_bytes[1], IT87_ADRPORT); - outb(init_bytes[2], IT87_ADRPORT); - outb(init_bytes[3], IT87_ADRPORT); - - /* deactivate CIR-Device */ - it87_write(IT87_CIR_ACT, 0x0); - - /* Leaving MB PnP Mode */ - it87_write(IT87_CFGCTRL, 0x2); -#endif - - del_timer_sync(&timerlist); - free_irq(irq, NULL); - release_region(io, 8); -} - - -static int init_lirc_it87(void) -{ - int retval; - - init_waitqueue_head(&lirc_read_queue); - retval = init_port(); - if (retval < 0) - return retval; - init_hardware(); - printk(KERN_INFO LIRC_DRIVER_NAME ": Installed.\n"); - return 0; -} - -static int it87_probe(struct pnp_dev *pnp_dev, - const struct pnp_device_id *dev_id) -{ - int retval; - - driver.dev = &pnp_dev->dev; - - retval = init_chrdev(); - if (retval < 0) - return retval; - - retval = init_lirc_it87(); - if (retval) - goto init_lirc_it87_failed; - - return 0; - -init_lirc_it87_failed: - drop_chrdev(); - - return retval; -} - -static int __init lirc_it87_init(void) -{ - return pnp_register_driver(&it87_pnp_driver); -} - - -static void __exit lirc_it87_exit(void) -{ - drop_hardware(); - drop_chrdev(); - drop_port(); - pnp_unregister_driver(&it87_pnp_driver); - printk(KERN_INFO LIRC_DRIVER_NAME ": Uninstalled.\n"); -} - -/* SECTION: PNP for ITE8704/13/18 */ - -static const struct pnp_device_id pnp_dev_table[] = { - {"ITE8704", 0}, - {"ITE8713", 0}, - {} -}; - -MODULE_DEVICE_TABLE(pnp, pnp_dev_table); - -static struct pnp_driver it87_pnp_driver = { - .name = LIRC_DRIVER_NAME, - .id_table = pnp_dev_table, - .probe = it87_probe, -}; - -module_init(lirc_it87_init); -module_exit(lirc_it87_exit); - -MODULE_DESCRIPTION("LIRC driver for ITE IT8704/05/12/18/20 CIR port"); -MODULE_AUTHOR("Hans-Gunter Lutke Uphues"); -MODULE_LICENSE("GPL"); - -module_param(io, int, S_IRUGO); -MODULE_PARM_DESC(io, "I/O base address (default: 0x310)"); - -module_param(irq, int, S_IRUGO); -#ifdef LIRC_IT87_DIGIMATRIX -MODULE_PARM_DESC(irq, "Interrupt (1,3-12) (default: 9)"); -#else -MODULE_PARM_DESC(irq, "Interrupt (1,3-12) (default: 7)"); -#endif - -module_param(it87_enable_demodulator, bool, S_IRUGO); -MODULE_PARM_DESC(it87_enable_demodulator, - "Receiver demodulator enable/disable (1/0), default: 0"); - -module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Enable debugging messages"); - -module_param(digimatrix, bool, S_IRUGO | S_IWUSR); -#ifdef LIRC_IT87_DIGIMATRIX -MODULE_PARM_DESC(digimatrix, - "Asus Digimatrix it87 compat. enable/disable (1/0), default: 1"); -#else -MODULE_PARM_DESC(digimatrix, - "Asus Digimatrix it87 compat. enable/disable (1/0), default: 0"); -#endif - - -module_param(it87_freq, int, S_IRUGO); -#ifdef LIRC_IT87_DIGIMATRIX -MODULE_PARM_DESC(it87_freq, - "Carrier demodulator frequency (kHz), (default: 36)"); -#else -MODULE_PARM_DESC(it87_freq, - "Carrier demodulator frequency (kHz), (default: 38)"); -#endif diff --git a/drivers/staging/lirc/lirc_it87.h b/drivers/staging/lirc/lirc_it87.h deleted file mode 100644 index cf021c8..0000000 --- a/drivers/staging/lirc/lirc_it87.h +++ /dev/null @@ -1,116 +0,0 @@ -/* lirc_it87.h */ -/* SECTION: Definitions */ - -/********************************* ITE IT87xx ************************/ - -/* based on the following documentation from ITE: - a) IT8712F Preliminary CIR Programming Guide V0.1 - b) IT8705F Simple LPC I/O Preliminary Specification V0.3 - c) IT8712F EC-LPC I/O Preliminary Specification V0.5 -*/ - -/* IT8712/05 Ports: */ -#define IT87_ADRPORT 0x2e -#define IT87_DATAPORT 0x2f -#define IT87_INIT {0x87, 0x01, 0x55, 0x55} - -/* alternate Ports: */ -/* -#define IT87_ADRPORT 0x4e -#define IT87_DATAPORT 0x4f -#define IT87_INIT {0x87, 0x01, 0x55, 0xaa} - */ - -/* IT8712/05 Registers */ -#define IT87_CFGCTRL 0x2 -#define IT87_LDN 0x7 -#define IT87_CHIP_ID1 0x20 -#define IT87_CHIP_ID2 0x21 -#define IT87_CFG_VERSION 0x22 -#define IT87_SWSUSPEND 0x23 - -#define IT8712_CIR_LDN 0xa -#define IT8705_CIR_LDN 0x7 - -/* CIR Configuration Registers: */ -#define IT87_CIR_ACT 0x30 -#define IT87_CIR_BASE_MSB 0x60 -#define IT87_CIR_BASE_LSB 0x61 -#define IT87_CIR_IRQ 0x70 -#define IT87_CIR_CONFIG 0xf0 - -/* List of IT87_CIR registers: offset to BaseAddr */ -#define IT87_CIR_DR 0 -#define IT87_CIR_IER 1 -#define IT87_CIR_RCR 2 -#define IT87_CIR_TCR1 3 -#define IT87_CIR_TCR2 4 -#define IT87_CIR_TSR 5 -#define IT87_CIR_RSR 6 -#define IT87_CIR_BDLR 5 -#define IT87_CIR_BDHR 6 -#define IT87_CIR_IIR 7 - -/* Bit Definition */ -/* IER: */ -#define IT87_CIR_IER_TM_EN 0x80 -#define IT87_CIR_IER_RESEVED 0x40 -#define IT87_CIR_IER_RESET 0x20 -#define IT87_CIR_IER_BR 0x10 -#define IT87_CIR_IER_IEC 0x8 -#define IT87_CIR_IER_RFOIE 0x4 -#define IT87_CIR_IER_RDAIE 0x2 -#define IT87_CIR_IER_TLDLIE 0x1 - -/* RCR: */ -#define IT87_CIR_RCR_RDWOS 0x80 -#define IT87_CIR_RCR_HCFS 0x40 -#define IT87_CIR_RCR_RXEN 0x20 -#define IT87_CIR_RCR_RXEND 0x10 -#define IT87_CIR_RCR_RXACT 0x8 -#define IT87_CIR_RCR_RXDCR 0x7 - -/* TCR1: */ -#define IT87_CIR_TCR1_FIFOCLR 0x80 -#define IT87_CIR_TCR1_ILE 0x40 -#define IT87_CIR_TCR1_FIFOTL 0x30 -#define IT87_CIR_TCR1_TXRLE 0x8 -#define IT87_CIR_TCR1_TXENDF 0x4 -#define IT87_CIR_TCR1_TXMPM 0x3 - -/* TCR2: */ -#define IT87_CIR_TCR2_CFQ 0xf8 -#define IT87_CIR_TCR2_TXMPW 0x7 - -/* TSR: */ -#define IT87_CIR_TSR_RESERVED 0xc0 -#define IT87_CIR_TSR_TXFBC 0x3f - -/* RSR: */ -#define IT87_CIR_RSR_RXFTO 0x80 -#define IT87_CIR_RSR_RESERVED 0x40 -#define IT87_CIR_RSR_RXFBC 0x3f - -/* IIR: */ -#define IT87_CIR_IIR_RESERVED 0xf8 -#define IT87_CIR_IIR_IID 0x6 -#define IT87_CIR_IIR_IIP 0x1 - -/* TM: */ -#define IT87_CIR_TM_IL_SEL 0x80 -#define IT87_CIR_TM_RESERVED 0x40 -#define IT87_CIR_TM_TM_REG 0x3f - -#define IT87_CIR_FIFO_SIZE 32 - -/* Baudratedivisor for IT87: power of 2: only 1,2,4 or 8) */ -#define IT87_CIR_BAUDRATE_DIVISOR 0x1 -#define IT87_CIR_DEFAULT_IOBASE 0x310 -#define IT87_CIR_DEFAULT_IRQ 0x7 -#define IT87_CIR_SPACE 0x00 -#define IT87_CIR_PULSE 0xff -#define IT87_CIR_FREQ_MIN 27 -#define IT87_CIR_FREQ_MAX 58 -#define TIME_CONST (IT87_CIR_BAUDRATE_DIVISOR * 8000000ul / 115200ul) - -/********************************* ITE IT87xx ************************/ diff --git a/drivers/staging/lirc/lirc_ite8709.c b/drivers/staging/lirc/lirc_ite8709.c deleted file mode 100644 index cb20cfd..0000000 --- a/drivers/staging/lirc/lirc_ite8709.c +++ /dev/null @@ -1,542 +0,0 @@ -/* - * LIRC driver for ITE8709 CIR port - * - * Copyright (C) 2008 Grégory Lardière - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 - * USA - */ - -#include -#include -#include -#include -#include -#include - -#include -#include - -#define LIRC_DRIVER_NAME "lirc_ite8709" - -#define BUF_CHUNK_SIZE sizeof(int) -#define BUF_SIZE (128*BUF_CHUNK_SIZE) - -/* - * The ITE8709 device seems to be the combination of IT8512 superIO chip and - * a specific firmware running on the IT8512's embedded micro-controller. - * In addition of the embedded micro-controller, the IT8512 chip contains a - * CIR module and several other modules. A few modules are directly accessible - * by the host CPU, but most of them are only accessible by the - * micro-controller. The CIR module is only accessible by the micro-controller. - * The battery-backed SRAM module is accessible by the host CPU and the - * micro-controller. So one of the MC's firmware role is to act as a bridge - * between the host CPU and the CIR module. The firmware implements a kind of - * communication protocol using the SRAM module as a shared memory. The IT8512 - * specification is publicly available on ITE's web site, but the communication - * protocol is not, so it was reverse-engineered. - */ - -/* ITE8709 Registers addresses and values (reverse-engineered) */ -#define ITE8709_MODE 0x1a -#define ITE8709_REG_ADR 0x1b -#define ITE8709_REG_VAL 0x1c -#define ITE8709_IIR 0x1e /* Interrupt identification register */ -#define ITE8709_RFSR 0x1f /* Receiver FIFO status register */ -#define ITE8709_FIFO_START 0x20 - -#define ITE8709_MODE_READY 0X00 -#define ITE8709_MODE_WRITE 0X01 -#define ITE8709_MODE_READ 0X02 -#define ITE8709_IIR_RDAI 0x02 /* Receiver data available interrupt */ -#define ITE8709_IIR_RFOI 0x04 /* Receiver FIFO overrun interrupt */ -#define ITE8709_RFSR_MASK 0x3f /* FIFO byte count mask */ - -/* - * IT8512 CIR-module registers addresses and values - * (from IT8512 E/F specification v0.4.1) - */ -#define IT8512_REG_MSTCR 0x01 /* Master control register */ -#define IT8512_REG_IER 0x02 /* Interrupt enable register */ -#define IT8512_REG_CFR 0x04 /* Carrier frequency register */ -#define IT8512_REG_RCR 0x05 /* Receive control register */ -#define IT8512_REG_BDLR 0x08 /* Baud rate divisor low byte register */ -#define IT8512_REG_BDHR 0x09 /* Baud rate divisor high byte register */ - -#define IT8512_MSTCR_RESET 0x01 /* Reset registers to default value */ -#define IT8512_MSTCR_FIFOCLR 0x02 /* Clear FIFO */ -#define IT8512_MSTCR_FIFOTL_7 0x04 /* FIFO threshold level : 7 */ -#define IT8512_MSTCR_FIFOTL_25 0x0c /* FIFO threshold level : 25 */ -#define IT8512_IER_RDAIE 0x02 /* Enable data interrupt request */ -#define IT8512_IER_RFOIE 0x04 /* Enable FIFO overrun interrupt req */ -#define IT8512_IER_IEC 0x80 /* Enable interrupt request */ -#define IT8512_CFR_CF_36KHZ 0x09 /* Carrier freq : low speed, 36kHz */ -#define IT8512_RCR_RXDCR_1 0x01 /* Demodulation carrier range : 1 */ -#define IT8512_RCR_RXACT 0x08 /* Receiver active */ -#define IT8512_RCR_RXEN 0x80 /* Receiver enable */ -#define IT8512_BDR_6 6 /* Baud rate divisor : 6 */ - -/* Actual values used by this driver */ -#define CFG_FIFOTL IT8512_MSTCR_FIFOTL_25 -#define CFG_CR_FREQ IT8512_CFR_CF_36KHZ -#define CFG_DCR IT8512_RCR_RXDCR_1 -#define CFG_BDR IT8512_BDR_6 -#define CFG_TIMEOUT 100000 /* Rearm interrupt when a space is > 100 ms */ - -static int debug; - -struct ite8709_device { - int use_count; - int io; - int irq; - spinlock_t hardware_lock; - __u64 acc_pulse; - __u64 acc_space; - char lastbit; - struct timeval last_tv; - struct lirc_driver driver; - struct tasklet_struct tasklet; - char force_rearm; - char rearmed; - char device_busy; -}; - -#define dprintk(fmt, args...) \ - do { \ - if (debug) \ - printk(KERN_DEBUG LIRC_DRIVER_NAME ": " \ - fmt, ## args); \ - } while (0) - - -static unsigned char ite8709_read(struct ite8709_device *dev, - unsigned char port) -{ - outb(port, dev->io); - return inb(dev->io+1); -} - -static void ite8709_write(struct ite8709_device *dev, unsigned char port, - unsigned char data) -{ - outb(port, dev->io); - outb(data, dev->io+1); -} - -static void ite8709_wait_device(struct ite8709_device *dev) -{ - int i = 0; - /* - * loop until device tells it's ready to continue - * iterations count is usually ~750 but can sometimes achieve 13000 - */ - for (i = 0; i < 15000; i++) { - udelay(2); - if (ite8709_read(dev, ITE8709_MODE) == ITE8709_MODE_READY) - break; - } -} - -static void ite8709_write_register(struct ite8709_device *dev, - unsigned char reg_adr, unsigned char reg_value) -{ - ite8709_wait_device(dev); - - ite8709_write(dev, ITE8709_REG_VAL, reg_value); - ite8709_write(dev, ITE8709_REG_ADR, reg_adr); - ite8709_write(dev, ITE8709_MODE, ITE8709_MODE_WRITE); -} - -static void ite8709_init_hardware(struct ite8709_device *dev) -{ - spin_lock_irq(&dev->hardware_lock); - dev->device_busy = 1; - spin_unlock_irq(&dev->hardware_lock); - - ite8709_write_register(dev, IT8512_REG_BDHR, (CFG_BDR >> 8) & 0xff); - ite8709_write_register(dev, IT8512_REG_BDLR, CFG_BDR & 0xff); - ite8709_write_register(dev, IT8512_REG_CFR, CFG_CR_FREQ); - ite8709_write_register(dev, IT8512_REG_IER, - IT8512_IER_IEC | IT8512_IER_RFOIE | IT8512_IER_RDAIE); - ite8709_write_register(dev, IT8512_REG_RCR, CFG_DCR); - ite8709_write_register(dev, IT8512_REG_MSTCR, - CFG_FIFOTL | IT8512_MSTCR_FIFOCLR); - ite8709_write_register(dev, IT8512_REG_RCR, - IT8512_RCR_RXEN | IT8512_RCR_RXACT | CFG_DCR); - - spin_lock_irq(&dev->hardware_lock); - dev->device_busy = 0; - spin_unlock_irq(&dev->hardware_lock); - - tasklet_enable(&dev->tasklet); -} - -static void ite8709_drop_hardware(struct ite8709_device *dev) -{ - tasklet_disable(&dev->tasklet); - - spin_lock_irq(&dev->hardware_lock); - dev->device_busy = 1; - spin_unlock_irq(&dev->hardware_lock); - - ite8709_write_register(dev, IT8512_REG_RCR, 0); - ite8709_write_register(dev, IT8512_REG_MSTCR, - IT8512_MSTCR_RESET | IT8512_MSTCR_FIFOCLR); - - spin_lock_irq(&dev->hardware_lock); - dev->device_busy = 0; - spin_unlock_irq(&dev->hardware_lock); -} - -static int ite8709_set_use_inc(void *data) -{ - struct ite8709_device *dev; - dev = data; - if (dev->use_count == 0) - ite8709_init_hardware(dev); - dev->use_count++; - return 0; -} - -static void ite8709_set_use_dec(void *data) -{ - struct ite8709_device *dev; - dev = data; - dev->use_count--; - if (dev->use_count == 0) - ite8709_drop_hardware(dev); -} - -static void ite8709_add_read_queue(struct ite8709_device *dev, int flag, - __u64 val) -{ - int value; - - dprintk("add a %llu usec %s\n", val, flag ? "pulse" : "space"); - - value = (val > PULSE_MASK) ? PULSE_MASK : val; - if (flag) - value |= PULSE_BIT; - - if (!lirc_buffer_full(dev->driver.rbuf)) { - lirc_buffer_write(dev->driver.rbuf, (void *) &value); - wake_up(&dev->driver.rbuf->wait_poll); - } -} - -static irqreturn_t ite8709_interrupt(int irq, void *dev_id) -{ - unsigned char data; - int iir, rfsr, i; - int fifo = 0; - char bit; - struct timeval curr_tv; - - /* Bit duration in microseconds */ - const unsigned long bit_duration = 1000000ul / (115200 / CFG_BDR); - - struct ite8709_device *dev; - dev = dev_id; - - /* - * If device is busy, we simply discard data because we are in one of - * these two cases : shutting down or rearming the device, so this - * doesn't really matter and this avoids waiting too long in IRQ ctx - */ - spin_lock(&dev->hardware_lock); - if (dev->device_busy) { - spin_unlock(&dev->hardware_lock); - return IRQ_RETVAL(IRQ_HANDLED); - } - - iir = ite8709_read(dev, ITE8709_IIR); - - switch (iir) { - case ITE8709_IIR_RFOI: - dprintk("fifo overrun, scheduling forced rearm just in case\n"); - dev->force_rearm = 1; - tasklet_schedule(&dev->tasklet); - spin_unlock(&dev->hardware_lock); - return IRQ_RETVAL(IRQ_HANDLED); - - case ITE8709_IIR_RDAI: - rfsr = ite8709_read(dev, ITE8709_RFSR); - fifo = rfsr & ITE8709_RFSR_MASK; - if (fifo > 32) - fifo = 32; - dprintk("iir: 0x%x rfsr: 0x%x fifo: %d\n", iir, rfsr, fifo); - - if (dev->rearmed) { - do_gettimeofday(&curr_tv); - dev->acc_space += 1000000ull - * (curr_tv.tv_sec - dev->last_tv.tv_sec) - + (curr_tv.tv_usec - dev->last_tv.tv_usec); - dev->rearmed = 0; - } - for (i = 0; i < fifo; i++) { - data = ite8709_read(dev, i+ITE8709_FIFO_START); - data = ~data; - /* Loop through */ - for (bit = 0; bit < 8; ++bit) { - if ((data >> bit) & 1) { - dev->acc_pulse += bit_duration; - if (dev->lastbit == 0) { - ite8709_add_read_queue(dev, 0, - dev->acc_space); - dev->acc_space = 0; - } - } else { - dev->acc_space += bit_duration; - if (dev->lastbit == 1) { - ite8709_add_read_queue(dev, 1, - dev->acc_pulse); - dev->acc_pulse = 0; - } - } - dev->lastbit = (data >> bit) & 1; - } - } - ite8709_write(dev, ITE8709_RFSR, 0); - - if (dev->acc_space > CFG_TIMEOUT) { - dprintk("scheduling rearm IRQ\n"); - do_gettimeofday(&dev->last_tv); - dev->force_rearm = 0; - tasklet_schedule(&dev->tasklet); - } - - spin_unlock(&dev->hardware_lock); - return IRQ_RETVAL(IRQ_HANDLED); - - default: - /* not our irq */ - dprintk("unknown IRQ (shouldn't happen) !!\n"); - spin_unlock(&dev->hardware_lock); - return IRQ_RETVAL(IRQ_NONE); - } -} - -static void ite8709_rearm_irq(unsigned long data) -{ - struct ite8709_device *dev; - unsigned long flags; - dev = (struct ite8709_device *) data; - - spin_lock_irqsave(&dev->hardware_lock, flags); - dev->device_busy = 1; - spin_unlock_irqrestore(&dev->hardware_lock, flags); - - if (dev->force_rearm || dev->acc_space > CFG_TIMEOUT) { - dprintk("rearming IRQ\n"); - ite8709_write_register(dev, IT8512_REG_RCR, - IT8512_RCR_RXACT | CFG_DCR); - ite8709_write_register(dev, IT8512_REG_MSTCR, - CFG_FIFOTL | IT8512_MSTCR_FIFOCLR); - ite8709_write_register(dev, IT8512_REG_RCR, - IT8512_RCR_RXEN | IT8512_RCR_RXACT | CFG_DCR); - if (!dev->force_rearm) - dev->rearmed = 1; - dev->force_rearm = 0; - } - - spin_lock_irqsave(&dev->hardware_lock, flags); - dev->device_busy = 0; - spin_unlock_irqrestore(&dev->hardware_lock, flags); -} - -static int ite8709_cleanup(struct ite8709_device *dev, int stage, int errno, - char *msg) -{ - if (msg != NULL) - printk(KERN_ERR LIRC_DRIVER_NAME ": %s\n", msg); - - switch (stage) { - case 6: - if (dev->use_count > 0) - ite8709_drop_hardware(dev); - case 5: - free_irq(dev->irq, dev); - case 4: - release_region(dev->io, 2); - case 3: - lirc_unregister_driver(dev->driver.minor); - case 2: - lirc_buffer_free(dev->driver.rbuf); - kfree(dev->driver.rbuf); - case 1: - kfree(dev); - case 0: - ; - } - - return errno; -} - -static int __devinit ite8709_pnp_probe(struct pnp_dev *dev, - const struct pnp_device_id *dev_id) -{ - struct lirc_driver *driver; - struct ite8709_device *ite8709_dev; - int ret; - - /* Check resources validity */ - if (!pnp_irq_valid(dev, 0)) - return ite8709_cleanup(NULL, 0, -ENODEV, "invalid IRQ"); - if (!pnp_port_valid(dev, 2)) - return ite8709_cleanup(NULL, 0, -ENODEV, "invalid IO port"); - - /* Allocate memory for device struct */ - ite8709_dev = kzalloc(sizeof(struct ite8709_device), GFP_KERNEL); - if (ite8709_dev == NULL) - return ite8709_cleanup(NULL, 0, -ENOMEM, "kzalloc failed"); - pnp_set_drvdata(dev, ite8709_dev); - - /* Initialize device struct */ - ite8709_dev->use_count = 0; - ite8709_dev->irq = pnp_irq(dev, 0); - ite8709_dev->io = pnp_port_start(dev, 2); - ite8709_dev->hardware_lock = - __SPIN_LOCK_UNLOCKED(ite8709_dev->hardware_lock); - ite8709_dev->acc_pulse = 0; - ite8709_dev->acc_space = 0; - ite8709_dev->lastbit = 0; - do_gettimeofday(&ite8709_dev->last_tv); - tasklet_init(&ite8709_dev->tasklet, ite8709_rearm_irq, - (long) ite8709_dev); - ite8709_dev->force_rearm = 0; - ite8709_dev->rearmed = 0; - ite8709_dev->device_busy = 0; - - /* Initialize driver struct */ - driver = &ite8709_dev->driver; - strcpy(driver->name, LIRC_DRIVER_NAME); - driver->minor = -1; - driver->code_length = sizeof(int) * 8; - driver->sample_rate = 0; - driver->features = LIRC_CAN_REC_MODE2; - driver->data = ite8709_dev; - driver->add_to_buf = NULL; - driver->set_use_inc = ite8709_set_use_inc; - driver->set_use_dec = ite8709_set_use_dec; - driver->dev = &dev->dev; - driver->owner = THIS_MODULE; - - /* Initialize LIRC buffer */ - driver->rbuf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL); - if (!driver->rbuf) - return ite8709_cleanup(ite8709_dev, 1, -ENOMEM, - "can't allocate lirc_buffer"); - if (lirc_buffer_init(driver->rbuf, BUF_CHUNK_SIZE, BUF_SIZE)) - return ite8709_cleanup(ite8709_dev, 1, -ENOMEM, - "lirc_buffer_init() failed"); - - /* Register LIRC driver */ - ret = lirc_register_driver(driver); - if (ret < 0) - return ite8709_cleanup(ite8709_dev, 2, ret, - "lirc_register_driver() failed"); - - /* Reserve I/O port access */ - if (!request_region(ite8709_dev->io, 2, LIRC_DRIVER_NAME)) - return ite8709_cleanup(ite8709_dev, 3, -EBUSY, - "i/o port already in use"); - - /* Reserve IRQ line */ - ret = request_irq(ite8709_dev->irq, ite8709_interrupt, 0, - LIRC_DRIVER_NAME, ite8709_dev); - if (ret < 0) - return ite8709_cleanup(ite8709_dev, 4, ret, - "IRQ already in use"); - - /* Initialize hardware */ - ite8709_drop_hardware(ite8709_dev); /* Shutdown hw until first use */ - - printk(KERN_INFO LIRC_DRIVER_NAME ": device found : irq=%d io=0x%x\n", - ite8709_dev->irq, ite8709_dev->io); - - return 0; -} - -static void __devexit ite8709_pnp_remove(struct pnp_dev *dev) -{ - struct ite8709_device *ite8709_dev; - ite8709_dev = pnp_get_drvdata(dev); - - ite8709_cleanup(ite8709_dev, 6, 0, NULL); - - printk(KERN_INFO LIRC_DRIVER_NAME ": device removed\n"); -} - -#ifdef CONFIG_PM -static int ite8709_pnp_suspend(struct pnp_dev *dev, pm_message_t state) -{ - struct ite8709_device *ite8709_dev; - ite8709_dev = pnp_get_drvdata(dev); - - if (ite8709_dev->use_count > 0) - ite8709_drop_hardware(ite8709_dev); - - return 0; -} - -static int ite8709_pnp_resume(struct pnp_dev *dev) -{ - struct ite8709_device *ite8709_dev; - ite8709_dev = pnp_get_drvdata(dev); - - if (ite8709_dev->use_count > 0) - ite8709_init_hardware(ite8709_dev); - - return 0; -} -#else -#define ite8709_pnp_suspend NULL -#define ite8709_pnp_resume NULL -#endif - -static const struct pnp_device_id pnp_dev_table[] = { - {"ITE8709", 0}, - {} -}; - -MODULE_DEVICE_TABLE(pnp, pnp_dev_table); - -static struct pnp_driver ite8709_pnp_driver = { - .name = LIRC_DRIVER_NAME, - .probe = ite8709_pnp_probe, - .remove = __devexit_p(ite8709_pnp_remove), - .suspend = ite8709_pnp_suspend, - .resume = ite8709_pnp_resume, - .id_table = pnp_dev_table, -}; - -static int __init ite8709_init_module(void) -{ - return pnp_register_driver(&ite8709_pnp_driver); -} -module_init(ite8709_init_module); - -static void __exit ite8709_cleanup_module(void) -{ - pnp_unregister_driver(&ite8709_pnp_driver); -} -module_exit(ite8709_cleanup_module); - -MODULE_DESCRIPTION("LIRC driver for ITE8709 CIR port"); -MODULE_AUTHOR("Grégory Lardière"); -MODULE_LICENSE("GPL"); - -module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Enable debugging messages");