Rename lirc_sir to sir_ir in the process.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---help---
Serial Port Transmitter support
+config IR_SIR
+ tristate "Built-in SIR IrDA port"
+ depends on RC_CORE
+ ---help---
+ Say Y if you want to use a IrDA SIR port Transceivers.
+
+ To compile this driver as a module, choose M here: the module will
+ be called sir-ir.
+
endif #RC_DEVICES
obj-$(CONFIG_IR_SUNXI) += sunxi-cir.o
obj-$(CONFIG_IR_IMG) += img-ir/
obj-$(CONFIG_IR_SERIAL) += serial_ir.o
+obj-$(CONFIG_IR_SIR) += sir_ir.o
obj-$(CONFIG_IR_MTK) += mtk-cir.o
--- /dev/null
+/*
+ * IR SIR driver, (C) 2000 Milan Pikula <www@fornax.sk>
+ *
+ * sir_ir - Device driver for use with SIR (serial infra red)
+ * mode of IrDA on many notebooks.
+ *
+ * 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.
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/serial_reg.h>
+#include <linux/ktime.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+
+#include <media/rc-core.h>
+
+/* SECTION: Definitions */
+#define PULSE '['
+
+/* 9bit * 1s/115200bit in milli seconds = 78.125ms*/
+#define TIME_CONST (9000000ul / 115200ul)
+
+/* timeout for sequences in jiffies (=5/100s), must be longer than TIME_CONST */
+#define SIR_TIMEOUT (HZ * 5 / 100)
+
+/* onboard sir ports are typically com3 */
+static int io = 0x3e8;
+static int irq = 4;
+static int threshold = 3;
+
+static DEFINE_SPINLOCK(timer_lock);
+static struct timer_list timerlist;
+/* time of last signal change detected */
+static ktime_t last;
+/* time of last UART data ready interrupt */
+static ktime_t last_intr_time;
+static int last_value;
+static struct rc_dev *rcdev;
+
+static struct platform_device *sir_ir_dev;
+
+static DEFINE_SPINLOCK(hardware_lock);
+
+/* SECTION: Prototypes */
+
+/* Communication with user-space */
+static void add_read_queue(int flag, unsigned long val);
+static int init_chrdev(void);
+/* Hardware */
+static irqreturn_t sir_interrupt(int irq, void *dev_id);
+static void send_space(unsigned long len);
+static void send_pulse(unsigned long len);
+static int init_hardware(void);
+static void drop_hardware(void);
+/* Initialisation */
+static int init_port(void);
+static void drop_port(void);
+
+static inline unsigned int sinp(int offset)
+{
+ return inb(io + offset);
+}
+
+static inline void soutp(int offset, int value)
+{
+ outb(value, io + offset);
+}
+
+/* SECTION: Communication with user-space */
+static int sir_tx_ir(struct rc_dev *dev, unsigned int *tx_buf,
+ unsigned int count)
+{
+ unsigned long flags;
+ int i;
+
+ local_irq_save(flags);
+ for (i = 0; i < count;) {
+ if (tx_buf[i])
+ send_pulse(tx_buf[i]);
+ i++;
+ if (i >= count)
+ break;
+ if (tx_buf[i])
+ send_space(tx_buf[i]);
+ i++;
+ }
+ local_irq_restore(flags);
+
+ return count;
+}
+
+static void add_read_queue(int flag, unsigned long val)
+{
+ DEFINE_IR_RAW_EVENT(ev);
+
+ pr_debug("add flag %d with val %lu\n", flag, val);
+
+ /*
+ * statistically, pulses are ~TIME_CONST/2 too long. we could
+ * maybe make this more exact, but this is good enough
+ */
+ if (flag) {
+ /* pulse */
+ if (val > TIME_CONST / 2)
+ val -= TIME_CONST / 2;
+ else /* should not ever happen */
+ val = 1;
+ ev.pulse = true;
+ } else {
+ val += TIME_CONST / 2;
+ }
+ ev.duration = US_TO_NS(val);
+
+ ir_raw_event_store_with_filter(rcdev, &ev);
+}
+
+static int init_chrdev(void)
+{
+ rcdev = devm_rc_allocate_device(&sir_ir_dev->dev, RC_DRIVER_IR_RAW);
+ if (!rcdev)
+ return -ENOMEM;
+
+ rcdev->input_name = "SIR IrDA port";
+ rcdev->input_phys = KBUILD_MODNAME "/input0";
+ rcdev->input_id.bustype = BUS_HOST;
+ rcdev->input_id.vendor = 0x0001;
+ rcdev->input_id.product = 0x0001;
+ rcdev->input_id.version = 0x0100;
+ rcdev->tx_ir = sir_tx_ir;
+ rcdev->allowed_protocols = RC_BIT_ALL_IR_DECODER;
+ rcdev->driver_name = KBUILD_MODNAME;
+ rcdev->map_name = RC_MAP_RC6_MCE;
+ rcdev->timeout = IR_DEFAULT_TIMEOUT;
+ rcdev->dev.parent = &sir_ir_dev->dev;
+
+ return devm_rc_register_device(&sir_ir_dev->dev, rcdev);
+}
+
+/* SECTION: Hardware */
+static void sir_timeout(unsigned long data)
+{
+ /*
+ * 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.
+ */
+
+ unsigned long flags;
+ unsigned long pulse_end;
+
+ /* avoid interference with interrupt */
+ spin_lock_irqsave(&timer_lock, flags);
+ if (last_value) {
+ /* clear unread bits in UART and restart */
+ outb(UART_FCR_CLEAR_RCVR, io + UART_FCR);
+ /* determine 'virtual' pulse end: */
+ pulse_end = min_t(unsigned long,
+ ktime_us_delta(last, last_intr_time),
+ IR_MAX_DURATION);
+ dev_dbg(&sir_ir_dev->dev, "timeout add %d for %lu usec\n",
+ last_value, pulse_end);
+ add_read_queue(last_value, pulse_end);
+ last_value = 0;
+ last = last_intr_time;
+ }
+ spin_unlock_irqrestore(&timer_lock, flags);
+ ir_raw_event_handle(rcdev);
+}
+
+static irqreturn_t sir_interrupt(int irq, void *dev_id)
+{
+ unsigned char data;
+ ktime_t curr_time;
+ static unsigned long delt;
+ unsigned long deltintr;
+ unsigned long flags;
+ int iir, lsr;
+
+ while ((iir = inb(io + UART_IIR) & UART_IIR_ID)) {
+ switch (iir & UART_IIR_ID) { /* FIXME toto treba preriedit */
+ case UART_IIR_MSI:
+ (void)inb(io + UART_MSR);
+ break;
+ case UART_IIR_RLSI:
+ case UART_IIR_THRI:
+ (void)inb(io + UART_LSR);
+ break;
+ case UART_IIR_RDI:
+ /* avoid interference with timer */
+ spin_lock_irqsave(&timer_lock, flags);
+ do {
+ del_timer(&timerlist);
+ data = inb(io + UART_RX);
+ curr_time = ktime_get();
+ delt = min_t(unsigned long,
+ ktime_us_delta(last, curr_time),
+ IR_MAX_DURATION);
+ deltintr = min_t(unsigned long,
+ ktime_us_delta(last_intr_time,
+ curr_time),
+ IR_MAX_DURATION);
+ dev_dbg(&sir_ir_dev->dev, "t %lu, d %d\n",
+ deltintr, (int)data);
+ /*
+ * if nothing came in last X cycles,
+ * it was gap
+ */
+ if (deltintr > TIME_CONST * threshold) {
+ if (last_value) {
+ dev_dbg(&sir_ir_dev->dev, "GAP\n");
+ /* simulate signal change */
+ add_read_queue(last_value,
+ delt -
+ deltintr);
+ last_value = 0;
+ last = last_intr_time;
+ delt = deltintr;
+ }
+ }
+ data = 1;
+ if (data ^ last_value) {
+ /*
+ * deltintr > 2*TIME_CONST, remember?
+ * the other case is timeout
+ */
+ add_read_queue(last_value,
+ delt - TIME_CONST);
+ last_value = data;
+ last = curr_time;
+ last = ktime_sub_us(last,
+ TIME_CONST);
+ }
+ last_intr_time = curr_time;
+ if (data) {
+ /*
+ * start timer for end of
+ * sequence detection
+ */
+ timerlist.expires = jiffies +
+ SIR_TIMEOUT;
+ add_timer(&timerlist);
+ }
+
+ lsr = inb(io + UART_LSR);
+ } while (lsr & UART_LSR_DR); /* data ready */
+ spin_unlock_irqrestore(&timer_lock, flags);
+ break;
+ default:
+ break;
+ }
+ }
+ ir_raw_event_handle(rcdev);
+ return IRQ_RETVAL(IRQ_HANDLED);
+}
+
+static void send_space(unsigned long len)
+{
+ usleep_range(len, len + 25);
+}
+
+static void send_pulse(unsigned long len)
+{
+ long bytes_out = len / TIME_CONST;
+
+ if (bytes_out == 0)
+ bytes_out++;
+
+ while (bytes_out--) {
+ outb(PULSE, io + UART_TX);
+ /* FIXME treba seriozne cakanie z char/serial.c */
+ while (!(inb(io + UART_LSR) & UART_LSR_THRE))
+ ;
+ }
+}
+
+static int init_hardware(void)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&hardware_lock, flags);
+ /* reset UART */
+ outb(0, io + UART_MCR);
+ outb(0, io + UART_IER);
+ /* init UART */
+ /* set DLAB, speed = 115200 */
+ outb(UART_LCR_DLAB | UART_LCR_WLEN7, io + UART_LCR);
+ outb(1, io + UART_DLL); outb(0, io + UART_DLM);
+ /* 7N1+start = 9 bits at 115200 ~ 3 bits at 44000 */
+ outb(UART_LCR_WLEN7, io + UART_LCR);
+ /* FIFO operation */
+ outb(UART_FCR_ENABLE_FIFO, io + UART_FCR);
+ /* interrupts */
+ /* outb(UART_IER_RLSI|UART_IER_RDI|UART_IER_THRI, io + UART_IER); */
+ outb(UART_IER_RDI, io + UART_IER);
+ /* turn on UART */
+ outb(UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2, io + UART_MCR);
+ spin_unlock_irqrestore(&hardware_lock, flags);
+ return 0;
+}
+
+static void drop_hardware(void)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&hardware_lock, flags);
+
+ /* turn off interrupts */
+ outb(0, io + UART_IER);
+
+ spin_unlock_irqrestore(&hardware_lock, flags);
+}
+
+/* SECTION: Initialisation */
+
+static int init_port(void)
+{
+ int retval;
+
+ setup_timer(&timerlist, sir_timeout, 0);
+
+ /* get I/O port access and IRQ line */
+ if (!request_region(io, 8, KBUILD_MODNAME)) {
+ pr_err("i/o port 0x%.4x already in use.\n", io);
+ return -EBUSY;
+ }
+ retval = request_irq(irq, sir_interrupt, 0,
+ KBUILD_MODNAME, NULL);
+ if (retval < 0) {
+ release_region(io, 8);
+ pr_err("IRQ %d already in use.\n", irq);
+ return retval;
+ }
+ pr_info("I/O port 0x%.4x, IRQ %d.\n", io, irq);
+
+ return 0;
+}
+
+static void drop_port(void)
+{
+ free_irq(irq, NULL);
+ del_timer_sync(&timerlist);
+ release_region(io, 8);
+}
+
+static int init_sir_ir(void)
+{
+ int retval;
+
+ retval = init_port();
+ if (retval < 0)
+ return retval;
+ init_hardware();
+ return 0;
+}
+
+static int sir_ir_probe(struct platform_device *dev)
+{
+ int retval;
+
+ retval = init_chrdev();
+ if (retval < 0)
+ return retval;
+
+ return init_sir_ir();
+}
+
+static int sir_ir_remove(struct platform_device *dev)
+{
+ return 0;
+}
+
+static struct platform_driver sir_ir_driver = {
+ .probe = sir_ir_probe,
+ .remove = sir_ir_remove,
+ .driver = {
+ .name = "sir_ir",
+ },
+};
+
+static int __init sir_ir_init(void)
+{
+ int retval;
+
+ retval = platform_driver_register(&sir_ir_driver);
+ if (retval)
+ return retval;
+
+ sir_ir_dev = platform_device_alloc("sir_ir", 0);
+ if (!sir_ir_dev) {
+ retval = -ENOMEM;
+ goto pdev_alloc_fail;
+ }
+
+ retval = platform_device_add(sir_ir_dev);
+ if (retval)
+ goto pdev_add_fail;
+
+ return 0;
+
+pdev_add_fail:
+ platform_device_put(sir_ir_dev);
+pdev_alloc_fail:
+ platform_driver_unregister(&sir_ir_driver);
+ return retval;
+}
+
+static void __exit sir_ir_exit(void)
+{
+ drop_hardware();
+ drop_port();
+ platform_device_unregister(sir_ir_dev);
+ platform_driver_unregister(&sir_ir_driver);
+}
+
+module_init(sir_ir_init);
+module_exit(sir_ir_exit);
+
+MODULE_DESCRIPTION("Infrared receiver driver for SIR type serial ports");
+MODULE_AUTHOR("Milan Pikula");
+MODULE_LICENSE("GPL");
+
+module_param(io, int, 0444);
+MODULE_PARM_DESC(io, "I/O address base (0x3f8 or 0x2f8)");
+
+module_param(irq, int, 0444);
+MODULE_PARM_DESC(irq, "Interrupt (4 or 3)");
+
+module_param(threshold, int, 0444);
+MODULE_PARM_DESC(threshold, "space detection threshold (3)");
help
Driver for the Sasem OnAir Remocon-V or Dign HV5 HTPC IR/VFD Module
-config LIRC_SIR
- tristate "Built-in SIR IrDA port"
- depends on RC_CORE
- help
- Driver for the SIR IrDA port
-
config LIRC_ZILOG
tristate "Zilog/Hauppauge IR Transmitter"
depends on LIRC && I2C
# Each configuration option enables a list of files.
obj-$(CONFIG_LIRC_SASEM) += lirc_sasem.o
-obj-$(CONFIG_LIRC_SIR) += lirc_sir.o
obj-$(CONFIG_LIRC_ZILOG) += lirc_zilog.o
+++ /dev/null
-/*
- * IR SIR driver, (C) 2000 Milan Pikula <www@fornax.sk>
- *
- * sir_ir - Device driver for use with SIR (serial infra red)
- * mode of IrDA on many notebooks.
- *
- * 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.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/serial_reg.h>
-#include <linux/ktime.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-
-#include <media/rc-core.h>
-
-/* SECTION: Definitions */
-#define PULSE '['
-
-/* 9bit * 1s/115200bit in milli seconds = 78.125ms*/
-#define TIME_CONST (9000000ul / 115200ul)
-
-/* timeout for sequences in jiffies (=5/100s), must be longer than TIME_CONST */
-#define SIR_TIMEOUT (HZ * 5 / 100)
-
-/* onboard sir ports are typically com3 */
-static int io = 0x3e8;
-static int irq = 4;
-static int threshold = 3;
-
-static DEFINE_SPINLOCK(timer_lock);
-static struct timer_list timerlist;
-/* time of last signal change detected */
-static ktime_t last;
-/* time of last UART data ready interrupt */
-static ktime_t last_intr_time;
-static int last_value;
-static struct rc_dev *rcdev;
-
-static struct platform_device *sir_ir_dev;
-
-static DEFINE_SPINLOCK(hardware_lock);
-
-/* SECTION: Prototypes */
-
-/* Communication with user-space */
-static void add_read_queue(int flag, unsigned long val);
-static int init_chrdev(void);
-/* Hardware */
-static irqreturn_t sir_interrupt(int irq, void *dev_id);
-static void send_space(unsigned long len);
-static void send_pulse(unsigned long len);
-static int init_hardware(void);
-static void drop_hardware(void);
-/* Initialisation */
-static int init_port(void);
-static void drop_port(void);
-
-static inline unsigned int sinp(int offset)
-{
- return inb(io + offset);
-}
-
-static inline void soutp(int offset, int value)
-{
- outb(value, io + offset);
-}
-
-/* SECTION: Communication with user-space */
-static int sir_tx_ir(struct rc_dev *dev, unsigned int *tx_buf,
- unsigned int count)
-{
- unsigned long flags;
- int i;
-
- local_irq_save(flags);
- for (i = 0; i < count;) {
- if (tx_buf[i])
- send_pulse(tx_buf[i]);
- i++;
- if (i >= count)
- break;
- if (tx_buf[i])
- send_space(tx_buf[i]);
- i++;
- }
- local_irq_restore(flags);
-
- return count;
-}
-
-static void add_read_queue(int flag, unsigned long val)
-{
- DEFINE_IR_RAW_EVENT(ev);
-
- pr_debug("add flag %d with val %lu\n", flag, val);
-
- /*
- * statistically, pulses are ~TIME_CONST/2 too long. we could
- * maybe make this more exact, but this is good enough
- */
- if (flag) {
- /* pulse */
- if (val > TIME_CONST / 2)
- val -= TIME_CONST / 2;
- else /* should not ever happen */
- val = 1;
- ev.pulse = true;
- } else {
- val += TIME_CONST / 2;
- }
- ev.duration = US_TO_NS(val);
-
- ir_raw_event_store_with_filter(rcdev, &ev);
-}
-
-static int init_chrdev(void)
-{
- rcdev = devm_rc_allocate_device(&sir_ir_dev->dev, RC_DRIVER_IR_RAW);
- if (!rcdev)
- return -ENOMEM;
-
- rcdev->input_name = "SIR IrDA port";
- rcdev->input_phys = KBUILD_MODNAME "/input0";
- rcdev->input_id.bustype = BUS_HOST;
- rcdev->input_id.vendor = 0x0001;
- rcdev->input_id.product = 0x0001;
- rcdev->input_id.version = 0x0100;
- rcdev->tx_ir = sir_tx_ir;
- rcdev->allowed_protocols = RC_BIT_ALL_IR_DECODER;
- rcdev->driver_name = KBUILD_MODNAME;
- rcdev->map_name = RC_MAP_RC6_MCE;
- rcdev->timeout = IR_DEFAULT_TIMEOUT;
- rcdev->dev.parent = &sir_ir_dev->dev;
-
- return devm_rc_register_device(&sir_ir_dev->dev, rcdev);
-}
-
-/* SECTION: Hardware */
-static void sir_timeout(unsigned long data)
-{
- /*
- * 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.
- */
-
- unsigned long flags;
- unsigned long pulse_end;
-
- /* avoid interference with interrupt */
- spin_lock_irqsave(&timer_lock, flags);
- if (last_value) {
- /* clear unread bits in UART and restart */
- outb(UART_FCR_CLEAR_RCVR, io + UART_FCR);
- /* determine 'virtual' pulse end: */
- pulse_end = min_t(unsigned long,
- ktime_us_delta(last, last_intr_time),
- IR_MAX_DURATION);
- dev_dbg(&sir_ir_dev->dev, "timeout add %d for %lu usec\n",
- last_value, pulse_end);
- add_read_queue(last_value, pulse_end);
- last_value = 0;
- last = last_intr_time;
- }
- spin_unlock_irqrestore(&timer_lock, flags);
- ir_raw_event_handle(rcdev);
-}
-
-static irqreturn_t sir_interrupt(int irq, void *dev_id)
-{
- unsigned char data;
- ktime_t curr_time;
- static unsigned long delt;
- unsigned long deltintr;
- unsigned long flags;
- int iir, lsr;
-
- while ((iir = inb(io + UART_IIR) & UART_IIR_ID)) {
- switch (iir & UART_IIR_ID) { /* FIXME toto treba preriedit */
- case UART_IIR_MSI:
- (void)inb(io + UART_MSR);
- break;
- case UART_IIR_RLSI:
- case UART_IIR_THRI:
- (void)inb(io + UART_LSR);
- break;
- case UART_IIR_RDI:
- /* avoid interference with timer */
- spin_lock_irqsave(&timer_lock, flags);
- do {
- del_timer(&timerlist);
- data = inb(io + UART_RX);
- curr_time = ktime_get();
- delt = min_t(unsigned long,
- ktime_us_delta(last, curr_time),
- IR_MAX_DURATION);
- deltintr = min_t(unsigned long,
- ktime_us_delta(last_intr_time,
- curr_time),
- IR_MAX_DURATION);
- dev_dbg(&sir_ir_dev->dev, "t %lu, d %d\n",
- deltintr, (int)data);
- /*
- * if nothing came in last X cycles,
- * it was gap
- */
- if (deltintr > TIME_CONST * threshold) {
- if (last_value) {
- dev_dbg(&sir_ir_dev->dev, "GAP\n");
- /* simulate signal change */
- add_read_queue(last_value,
- delt -
- deltintr);
- last_value = 0;
- last = last_intr_time;
- delt = deltintr;
- }
- }
- data = 1;
- if (data ^ last_value) {
- /*
- * deltintr > 2*TIME_CONST, remember?
- * the other case is timeout
- */
- add_read_queue(last_value,
- delt - TIME_CONST);
- last_value = data;
- last = curr_time;
- last = ktime_sub_us(last,
- TIME_CONST);
- }
- last_intr_time = curr_time;
- if (data) {
- /*
- * start timer for end of
- * sequence detection
- */
- timerlist.expires = jiffies +
- SIR_TIMEOUT;
- add_timer(&timerlist);
- }
-
- lsr = inb(io + UART_LSR);
- } while (lsr & UART_LSR_DR); /* data ready */
- spin_unlock_irqrestore(&timer_lock, flags);
- break;
- default:
- break;
- }
- }
- ir_raw_event_handle(rcdev);
- return IRQ_RETVAL(IRQ_HANDLED);
-}
-
-static void send_space(unsigned long len)
-{
- usleep_range(len, len + 25);
-}
-
-static void send_pulse(unsigned long len)
-{
- long bytes_out = len / TIME_CONST;
-
- if (bytes_out == 0)
- bytes_out++;
-
- while (bytes_out--) {
- outb(PULSE, io + UART_TX);
- /* FIXME treba seriozne cakanie z char/serial.c */
- while (!(inb(io + UART_LSR) & UART_LSR_THRE))
- ;
- }
-}
-
-static int init_hardware(void)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&hardware_lock, flags);
- /* reset UART */
- outb(0, io + UART_MCR);
- outb(0, io + UART_IER);
- /* init UART */
- /* set DLAB, speed = 115200 */
- outb(UART_LCR_DLAB | UART_LCR_WLEN7, io + UART_LCR);
- outb(1, io + UART_DLL); outb(0, io + UART_DLM);
- /* 7N1+start = 9 bits at 115200 ~ 3 bits at 44000 */
- outb(UART_LCR_WLEN7, io + UART_LCR);
- /* FIFO operation */
- outb(UART_FCR_ENABLE_FIFO, io + UART_FCR);
- /* interrupts */
- /* outb(UART_IER_RLSI|UART_IER_RDI|UART_IER_THRI, io + UART_IER); */
- outb(UART_IER_RDI, io + UART_IER);
- /* turn on UART */
- outb(UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2, io + UART_MCR);
- spin_unlock_irqrestore(&hardware_lock, flags);
- return 0;
-}
-
-static void drop_hardware(void)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&hardware_lock, flags);
-
- /* turn off interrupts */
- outb(0, io + UART_IER);
-
- spin_unlock_irqrestore(&hardware_lock, flags);
-}
-
-/* SECTION: Initialisation */
-
-static int init_port(void)
-{
- int retval;
-
- setup_timer(&timerlist, sir_timeout, 0);
-
- /* get I/O port access and IRQ line */
- if (!request_region(io, 8, KBUILD_MODNAME)) {
- pr_err("i/o port 0x%.4x already in use.\n", io);
- return -EBUSY;
- }
- retval = request_irq(irq, sir_interrupt, 0,
- KBUILD_MODNAME, NULL);
- if (retval < 0) {
- release_region(io, 8);
- pr_err("IRQ %d already in use.\n", irq);
- return retval;
- }
- pr_info("I/O port 0x%.4x, IRQ %d.\n", io, irq);
-
- return 0;
-}
-
-static void drop_port(void)
-{
- free_irq(irq, NULL);
- del_timer_sync(&timerlist);
- release_region(io, 8);
-}
-
-static int init_sir_ir(void)
-{
- int retval;
-
- retval = init_port();
- if (retval < 0)
- return retval;
- init_hardware();
- return 0;
-}
-
-static int sir_ir_probe(struct platform_device *dev)
-{
- int retval;
-
- retval = init_chrdev();
- if (retval < 0)
- return retval;
-
- return init_sir_ir();
-}
-
-static int sir_ir_remove(struct platform_device *dev)
-{
- return 0;
-}
-
-static struct platform_driver sir_ir_driver = {
- .probe = sir_ir_probe,
- .remove = sir_ir_remove,
- .driver = {
- .name = "sir_ir",
- },
-};
-
-static int __init sir_ir_init(void)
-{
- int retval;
-
- retval = platform_driver_register(&sir_ir_driver);
- if (retval)
- return retval;
-
- sir_ir_dev = platform_device_alloc("sir_ir", 0);
- if (!sir_ir_dev) {
- retval = -ENOMEM;
- goto pdev_alloc_fail;
- }
-
- retval = platform_device_add(sir_ir_dev);
- if (retval)
- goto pdev_add_fail;
-
- return 0;
-
-pdev_add_fail:
- platform_device_put(sir_ir_dev);
-pdev_alloc_fail:
- platform_driver_unregister(&sir_ir_driver);
- return retval;
-}
-
-static void __exit sir_ir_exit(void)
-{
- drop_hardware();
- drop_port();
- platform_device_unregister(sir_ir_dev);
- platform_driver_unregister(&sir_ir_driver);
-}
-
-module_init(sir_ir_init);
-module_exit(sir_ir_exit);
-
-MODULE_DESCRIPTION("Infrared receiver driver for SIR type serial ports");
-MODULE_AUTHOR("Milan Pikula");
-MODULE_LICENSE("GPL");
-
-module_param(io, int, 0444);
-MODULE_PARM_DESC(io, "I/O address base (0x3f8 or 0x2f8)");
-
-module_param(irq, int, 0444);
-MODULE_PARM_DESC(irq, "Interrupt (4 or 3)");
-
-module_param(threshold, int, 0444);
-MODULE_PARM_DESC(threshold, "space detection threshold (3)");
projects / mirror_ubuntu-eoan-kernel.git / commitdiff