diff options
| -rw-r--r-- | drivers/staging/media/lirc/lirc_serial.c | 677 |
1 files changed, 274 insertions, 403 deletions
diff --git a/drivers/staging/media/lirc/lirc_serial.c b/drivers/staging/media/lirc/lirc_serial.c index b798b311d32c..05a8a47aecef 100644 --- a/drivers/staging/media/lirc/lirc_serial.c +++ b/drivers/staging/media/lirc/lirc_serial.c @@ -9,6 +9,7 @@ * Copyright (C) 1998 Ben Pfaff <blp@gnu.org> * Copyright (C) 1999 Christoph Bartelmus <lirc@bartelmus.de> * Copyright (C) 2007 Andrei Tanas <andrei@tanas.ca> (suspend/resume support) + * Copyright (C) 2016 Sean Young <sean@mess.org> (port to rc-core) * 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 @@ -18,18 +19,13 @@ * 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 - * */ /* * Steve's changes to improve transmission fidelity: * - for systems with the rdtsc instruction and the clock counter, a * send_pule that times the pulses directly using the counter. - * This means that the LIRC_SERIAL_TRANSMITTER_LATENCY fudge is + * This means that the IR_SERIAL_TRANSMITTER_LATENCY fudge is * not needed. Measurement shows very stable waveform, even where * PCI activity slows the access to the UART, which trips up other * versions. @@ -52,56 +48,34 @@ #include <linux/module.h> #include <linux/errno.h> -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/fs.h> #include <linux/interrupt.h> -#include <linux/ioport.h> #include <linux/kernel.h> #include <linux/serial_reg.h> -#include <linux/ktime.h> -#include <linux/string.h> #include <linux/types.h> -#include <linux/wait.h> -#include <linux/mm.h> #include <linux/delay.h> -#include <linux/poll.h> #include <linux/platform_device.h> -#include <linux/gpio.h> -#include <linux/io.h> -#include <linux/irq.h> -#include <linux/fcntl.h> #include <linux/spinlock.h> +#include <media/rc-core.h> -/* From Intel IXP42X Developer's Manual (#252480-005): */ -/* ftp://download.intel.com/design/network/manuals/25248005.pdf */ -#define UART_IE_IXP42X_UUE 0x40 /* IXP42X UART Unit enable */ -#define UART_IE_IXP42X_RTOIE 0x10 /* IXP42X Receiver Data Timeout int.enable */ - -#include <media/lirc.h> -#include <media/lirc_dev.h> - -#define LIRC_DRIVER_NAME "lirc_serial" - -struct lirc_serial { +struct serial_ir_hw { int signal_pin; int signal_pin_change; u8 on; u8 off; + unsigned set_send_carrier:1; + unsigned set_duty_cycle:1; long (*send_pulse)(unsigned long length); void (*send_space)(long length); - int features; spinlock_t lock; }; -#define LIRC_HOMEBREW 0 -#define LIRC_IRDEO 1 -#define LIRC_IRDEO_REMOTE 2 -#define LIRC_ANIMAX 3 -#define LIRC_IGOR 4 -#define LIRC_NSLU2 5 +#define IR_HOMEBREW 0 +#define IR_IRDEO 1 +#define IR_IRDEO_REMOTE 2 +#define IR_ANIMAX 3 +#define IR_IGOR 4 -/*** module parameters ***/ +/* module parameters */ static int type; static int io; static int irq; @@ -114,107 +88,89 @@ static bool txsense; /* 0 = active high, 1 = active low */ /* forward declarations */ static long send_pulse_irdeo(unsigned long length); -static long send_pulse_homebrew(unsigned long length); static void send_space_irdeo(long length); +#ifdef CONFIG_IR_SERIAL_TRANSMITTER +static long send_pulse_homebrew(unsigned long length); static void send_space_homebrew(long length); +#endif -static struct lirc_serial hardware[] = { - [LIRC_HOMEBREW] = { - .lock = __SPIN_LOCK_UNLOCKED(hardware[LIRC_HOMEBREW].lock), - .signal_pin = UART_MSR_DCD, +static struct serial_ir_hw hardware[] = { + [IR_HOMEBREW] = { + .lock = __SPIN_LOCK_UNLOCKED(hardware[IR_HOMEBREW].lock), + .signal_pin = UART_MSR_DCD, .signal_pin_change = UART_MSR_DDCD, .on = (UART_MCR_RTS | UART_MCR_OUT2 | UART_MCR_DTR), .off = (UART_MCR_RTS | UART_MCR_OUT2), +#ifdef CONFIG_IR_SERIAL_TRANSMITTER .send_pulse = send_pulse_homebrew, .send_space = send_space_homebrew, -#ifdef CONFIG_LIRC_SERIAL_TRANSMITTER - .features = (LIRC_CAN_SET_SEND_DUTY_CYCLE | - LIRC_CAN_SET_SEND_CARRIER | - LIRC_CAN_SEND_PULSE | LIRC_CAN_REC_MODE2) -#else - .features = LIRC_CAN_REC_MODE2 + .set_send_carrier = true, + .set_duty_cycle = true, #endif }, - [LIRC_IRDEO] = { - .lock = __SPIN_LOCK_UNLOCKED(hardware[LIRC_IRDEO].lock), - .signal_pin = UART_MSR_DSR, + [IR_IRDEO] = { + .lock = __SPIN_LOCK_UNLOCKED(hardware[IR_IRDEO].lock), + .signal_pin = UART_MSR_DSR, .signal_pin_change = UART_MSR_DDSR, .on = UART_MCR_OUT2, .off = (UART_MCR_RTS | UART_MCR_DTR | UART_MCR_OUT2), - .send_pulse = send_pulse_irdeo, - .send_space = send_space_irdeo, - .features = (LIRC_CAN_SET_SEND_DUTY_CYCLE | - LIRC_CAN_SEND_PULSE | LIRC_CAN_REC_MODE2) + .send_pulse = send_pulse_irdeo, + .send_space = send_space_irdeo, + .set_duty_cycle = true, }, - [LIRC_IRDEO_REMOTE] = { - .lock = __SPIN_LOCK_UNLOCKED(hardware[LIRC_IRDEO_REMOTE].lock), - .signal_pin = UART_MSR_DSR, + [IR_IRDEO_REMOTE] = { + .lock = __SPIN_LOCK_UNLOCKED(hardware[IR_IRDEO_REMOTE].lock), + .signal_pin = UART_MSR_DSR, .signal_pin_change = UART_MSR_DDSR, .on = (UART_MCR_RTS | UART_MCR_DTR | UART_MCR_OUT2), .off = (UART_MCR_RTS | UART_MCR_DTR | UART_MCR_OUT2), - .send_pulse = send_pulse_irdeo, - .send_space = send_space_irdeo, - .features = (LIRC_CAN_SET_SEND_DUTY_CYCLE | - LIRC_CAN_SEND_PULSE | LIRC_CAN_REC_MODE2) + .send_pulse = send_pulse_irdeo, + .send_space = send_space_irdeo, + .set_duty_cycle = true, }, - [LIRC_ANIMAX] = { - .lock = __SPIN_LOCK_UNLOCKED(hardware[LIRC_ANIMAX].lock), - .signal_pin = UART_MSR_DCD, + [IR_ANIMAX] = { + .lock = __SPIN_LOCK_UNLOCKED(hardware[IR_ANIMAX].lock), + .signal_pin = UART_MSR_DCD, .signal_pin_change = UART_MSR_DDCD, .on = 0, .off = (UART_MCR_RTS | UART_MCR_DTR | UART_MCR_OUT2), .send_pulse = NULL, .send_space = NULL, - .features = LIRC_CAN_REC_MODE2 }, - [LIRC_IGOR] = { - .lock = __SPIN_LOCK_UNLOCKED(hardware[LIRC_IGOR].lock), - .signal_pin = UART_MSR_DSR, + [IR_IGOR] = { + .lock = __SPIN_LOCK_UNLOCKED(hardware[IR_IGOR].lock), + .signal_pin = UART_MSR_DSR, .signal_pin_change = UART_MSR_DDSR, .on = (UART_MCR_RTS | UART_MCR_OUT2 | UART_MCR_DTR), .off = (UART_MCR_RTS | UART_MCR_OUT2), +#ifdef CONFIG_IR_SERIAL_TRANSMITTER .send_pulse = send_pulse_homebrew, .send_space = send_space_homebrew, -#ifdef CONFIG_LIRC_SERIAL_TRANSMITTER - .features = (LIRC_CAN_SET_SEND_DUTY_CYCLE | - LIRC_CAN_SET_SEND_CARRIER | - LIRC_CAN_SEND_PULSE | LIRC_CAN_REC_MODE2) -#else - .features = LIRC_CAN_REC_MODE2 + .set_send_carrier = true, + .set_duty_cycle = true, #endif }, }; #define RS_ISR_PASS_LIMIT 256 -/* - * A long pulse code from a remote might take up to 300 bytes. The - * daemon should read the bytes as soon as they are generated, so take - * the number of keys you think you can push before the daemon runs - * and multiply by 300. The driver will warn you if you overrun this - * buffer. If you have a slow computer or non-busmastering IDE disks, - * maybe you will need to increase this. - */ - -/* This MUST be a power of two! It has to be larger than 1 as well. */ - -#define RBUF_LEN 256 +struct serial_ir { + ktime_t lastkt; + struct rc_dev *rcdev; + struct platform_device *pdev; -static ktime_t lastkt; + unsigned int freq; + unsigned int duty_cycle; -static struct lirc_buffer rbuf; - -static unsigned int freq = 38000; -static unsigned int duty_cycle = 50; + unsigned long period; + unsigned long pulse_width, space_width; +}; -/* Initialized in init_timing_params() */ -static unsigned long period; -static unsigned long pulse_width; -static unsigned long space_width; +static struct serial_ir serial_ir; #if defined(__i386__) /* @@ -241,18 +197,18 @@ static unsigned long space_width; * changed from 400 to 450 as this works better on slower machines; * faster machines will use the rdtsc code anyway */ -#define LIRC_SERIAL_TRANSMITTER_LATENCY 450 +#define IR_SERIAL_TRANSMITTER_LATENCY 450 #else /* does anybody have information on other platforms ? */ /* 256 = 1<<8 */ -#define LIRC_SERIAL_TRANSMITTER_LATENCY 256 +#define IR_SERIAL_TRANSMITTER_LATENCY 256 -#endif /* __i386__ */ +#endif /* __i386__ */ /* * FIXME: should we be using hrtimers instead of this - * LIRC_SERIAL_TRANSMITTER_LATENCY nonsense? + * IR_SERIAL_TRANSMITTER_LATENCY nonsense? */ /* fetch serial input packet (1 byte) from register offset */ @@ -324,8 +280,8 @@ static int init_timing_params(unsigned int new_duty_cycle, { __u64 loops_per_sec, work; - duty_cycle = new_duty_cycle; - freq = new_freq; + serial_ir.duty_cycle = new_duty_cycle; + serial_ir.freq = new_freq; loops_per_sec = __this_cpu_read(cpu.info.loops_per_jiffy); loops_per_sec *= HZ; @@ -338,12 +294,12 @@ static int init_timing_params(unsigned int new_duty_cycle, * Carrier period in clocks, approach good up to 32GHz clock, * gets carrier frequency within 8Hz */ - period = loops_per_sec >> 3; - period /= (freq >> 3); + serial_ir.period = loops_per_sec >> 3; + serial_ir.pperiod /= (freq >> 3); /* Derive pulse and space from the period */ - pulse_width = period * duty_cycle / 100; - space_width = period - pulse_width; + serial_ir.ppulse_width = serial_ir.period * serial.ir.duty_cycle / 100; + serial_ir.pspace_width = serial_ir.period - serial_ir.pulse_width; pr_debug("in init_timing_params, freq=%d, duty_cycle=%d, clk/jiffy=%ld, pulse=%ld, space=%ld, conv_us_to_clocks=%ld\n", freq, duty_cycle, __this_cpu_read(cpu_info.loops_per_jiffy), pulse_width, space_width, conv_us_to_clocks); @@ -358,18 +314,19 @@ static int init_timing_params(unsigned int new_duty_cycle, * IE multiplied by 256. */ if (256 * 1000000L / new_freq * new_duty_cycle / 100 <= - LIRC_SERIAL_TRANSMITTER_LATENCY) + IR_SERIAL_TRANSMITTER_LATENCY) return -EINVAL; if (256 * 1000000L / new_freq * (100 - new_duty_cycle) / 100 <= - LIRC_SERIAL_TRANSMITTER_LATENCY) + IR_SERIAL_TRANSMITTER_LATENCY) return -EINVAL; - duty_cycle = new_duty_cycle; - freq = new_freq; - period = 256 * 1000000L / freq; - pulse_width = period * duty_cycle / 100; - space_width = period - pulse_width; + serial_ir.duty_cycle = new_duty_cycle; + serial_ir.freq = new_freq; + serial_ir.period = 256 * 1000000L / serial_ir.freq; + serial_ir.pulse_width = serial_ir.period * serial_ir.duty_cycle / 100; + serial_ir.space_width = serial_ir.period - serial_ir.pulse_width; pr_debug("in init_timing_params, freq=%d pulse=%ld, space=%ld\n", - freq, pulse_width, space_width); + serial_ir.freq, serial_ir.pulse_width, + serial_ir.space_width); return 0; } #endif /* USE_RDTSC */ @@ -386,7 +343,7 @@ static long send_pulse_irdeo(unsigned long length) /* how many bits have to be sent ? */ rawbits = length * 1152 / 10000; - if (duty_cycle > 50) + if (serial_ir.duty_cycle > 50) chunk = 3; else chunk = 1; @@ -429,6 +386,15 @@ static long send_pulse_irdeo(unsigned long length) /* To match 8 fractional bits used for pulse/space length */ +static void send_space_irdeo(long length) +{ + if (length <= 0) + return; + + safe_udelay(length); +} + +#ifdef CONFIG_IR_SERIAL_TRANSMITTER static long send_pulse_homebrew_softcarrier(unsigned long length) { int flag; @@ -440,19 +406,19 @@ static long send_pulse_homebrew_softcarrier(unsigned long length) while (actual < length) { if (flag) { off(); - target += space_width; + target += serial_ir.space_width; } else { on(); - target += pulse_width; + target += serial_ir.pulse_width; } d = (target - actual - - LIRC_SERIAL_TRANSMITTER_LATENCY + 128) >> 8; + IR_SERIAL_TRANSMITTER_LATENCY + 128) >> 8; /* * Note - we've checked in ioctl that the pulse/space * widths are big enough so that d is > 0 */ udelay(d); - actual += (d << 8) + LIRC_SERIAL_TRANSMITTER_LATENCY; + actual += (d << 8) + IR_SERIAL_TRANSMITTER_LATENCY; flag = !flag; } return (actual-length) >> 8; @@ -471,14 +437,6 @@ static long send_pulse_homebrew(unsigned long length) return 0; } -static void send_space_irdeo(long length) -{ - if (length <= 0) - return; - - safe_udelay(length); -} - static void send_space_homebrew(long length) { off(); @@ -486,67 +444,70 @@ static void send_space_homebrew(long length) return; safe_udelay(length); } +#endif -static void rbwrite(int l) -{ - if (lirc_buffer_full(&rbuf)) { - /* no new signals will be accepted */ - pr_debug("Buffer overrun\n"); - return; - } - lirc_buffer_write(&rbuf, (void *)&l); -} - -static void frbwrite(int l) +static void frbwrite(unsigned int l, bool is_pulse) { /* simple noise filter */ - static int pulse, space; - static unsigned int ptr; - - if (ptr > 0 && (l & PULSE_BIT)) { - pulse += l & PULSE_MASK; - if (pulse > 250) { - rbwrite(space); - rbwrite(pulse | PULSE_BIT); + static unsigned int ptr, pulse, space; + DEFINE_IR_RAW_EVENT(ev); + + if (ptr > 0 && is_pulse) { + pulse += l; + if (pulse > 250000) { + ev.duration = space; + ev.pulse = false; + ir_raw_event_store_with_filter(serial_ir.rcdev, &ev); + ev.duration = pulse; + ev.pulse = true; + ir_raw_event_store_with_filter(serial_ir.rcdev, &ev); ptr = 0; pulse = 0; } return; } - if (!(l & PULSE_BIT)) { + if (!is_pulse) { if (ptr == 0) { - if (l > 20000) { + if (l > 20000000) { space = l; ptr++; return; } } else { - if (l > 20000) { + if (l > 20000000) { space += pulse; - if (space > PULSE_MASK) - space = PULSE_MASK; + if (space > IR_MAX_DURATION) + space = IR_MAX_DURATION; space += l; - if (space > PULSE_MASK) - space = PULSE_MASK; + if (space > IR_MAX_DURATION) + space = IR_MAX_DURATION; pulse = 0; return; } - rbwrite(space); - rbwrite(pulse | PULSE_BIT); + + ev.duration = space; + ev.pulse = false; + ir_raw_event_store_with_filter(serial_ir.rcdev, &ev); + ev.duration = pulse; + ev.pulse = true; + ir_raw_event_store_with_filter(serial_ir.rcdev, &ev); ptr = 0; pulse = 0; } } - rbwrite(l); + + ev.duration = l; + ev.pulse = is_pulse; + ir_raw_event_store_with_filter(serial_ir.rcdev, &ev); } -static irqreturn_t lirc_irq_handler(int i, void *blah) +static irqreturn_t serial_ir_irq_handler(int i, void *blah) { ktime_t kt; int counter, dcd; u8 status; ktime_t delkt; - int data; + unsigned int data; static int last_dcd = -1; if ((sinp(UART_IIR) & UART_IIR_NO_INT)) { @@ -559,7 +520,7 @@ static irqreturn_t lirc_irq_handler(int i, void *blah) counter++; status = sinp(UART_MSR); if (counter > RS_ISR_PASS_LIMIT) { - pr_warn("AIEEEE: We're caught!\n"); + dev_err(&serial_ir.pdev->dev, "Trapped in interrupt"); break; } if ((status & hardware[type].signal_pin_change) @@ -567,47 +528,32 @@ static irqreturn_t lirc_irq_handler(int i, void *blah) /* get current time */ kt = ktime_get(); - /* New mode, written by Trent Piepho - <xyzzy@u.washington.edu>. */ - /* - * The old format was not very portable. - * We now use an int to pass pulses - * and spaces to user space. - * - * If PULSE_BIT is set a pulse has been - * received, otherwise a space has been - * received. The driver needs to know if your - * receiver is active high or active low, or - * the space/pulse sense could be - * inverted. The bits denoted by PULSE_MASK are - * the length in microseconds. Lengths greater - * than or equal to 16 seconds are clamped to - * PULSE_MASK. All other bits are unused. - * This is a much simpler interface for user - * programs, as well as eliminating "out of - * phase" errors with space/pulse - * autodetection. + * The driver needs to know if your receiver is + * active high or active low, or the space/pulse + * sense could be inverted. */ - /* calc time since last interrupt in microseconds */ + /* calc time since last interrupt in nanoseconds */ dcd = (status & hardware[type].signal_pin) ? 1 : 0; if (dcd == last_dcd) { - pr_warn("ignoring spike: %d %d %llx %llx\n", - dcd, sense, ktime_to_us(kt), - ktime_to_us(lastkt)); + dev_err(&serial_ir.pdev->dev, + "ignoring spike: %d %d %lldns %lldns\n", + dcd, sense, ktime_to_ns(kt), + ktime_to_ns(serial_ir.lastkt)); continue; } - delkt = ktime_sub(kt, lastkt); + delkt = ktime_sub(kt, serial_ir.lastkt); if (ktime_compare(delkt, ktime_set(15, 0)) > 0) { - data = PULSE_MASK; /* really long time */ + data = IR_MAX_DURATION; /* really long time */ if (!(dcd^sense)) { /* sanity check */ - pr_warn("AIEEEE: %d %d %llx %llx\n", - dcd, sense, ktime_to_us(kt), - ktime_to_us(lastkt)); + dev_err(&serial_ir.pdev->dev, + "dcd unexpected: %d %d %lldns %lldns\n", + dcd, sense, ktime_to_ns(kt), + ktime_to_ns(serial_ir.lastkt)); /* * detecting pulse while this * MUST be a space! @@ -615,11 +561,11 @@ static irqreturn_t lirc_irq_handler(int i, void *blah) sense = sense ? 0 : 1; } } else - data = (int) ktime_to_us(delkt); - frbwrite(dcd^sense ? data : (data|PULSE_BIT)); - lastkt = kt; + data = ktime_to_ns(delkt); + frbwrite(data, !(dcd ^ sense)); + serial_ir.lastkt = kt; last_dcd = dcd; - wake_up_interruptible(&rbuf.wait_poll); + ir_raw_event_handle(serial_ir.rcdev); } } while (!(sinp(UART_IIR) & UART_IIR_NO_INT)); /* still pending ? */ return IRQ_HANDLED; @@ -652,8 +598,6 @@ static int hardware_init_port(void) return -ENODEV; } - - /* Set DLAB 0. */ soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB)); @@ -677,8 +621,8 @@ static int hardware_init_port(void) sinp(UART_MSR); switch (type) { - case LIRC_IRDEO: - case LIRC_IRDEO_REMOTE: + case IR_IRDEO: + case IR_IRDEO_REMOTE: /* setup port to 7N1 @ 115200 Baud */ /* 7N1+start = 9 bits at 115200 ~ 3 bits at 38kHz */ @@ -698,13 +642,13 @@ static int hardware_init_port(void) return 0; } -static int lirc_serial_probe(struct platform_device *dev) +static int serial_ir_probe(struct platform_device *dev) { int i, nlow, nhigh, result; - result = devm_request_irq(&dev->dev, irq, lirc_irq_handler, - (share_irq ? IRQF_SHARED : 0), - LIRC_DRIVER_NAME, &hardware); + result = devm_request_irq(&dev->dev, irq, serial_ir_irq_handler, + share_irq ? IRQF_SHARED : 0, + KBUILD_MODNAME, &hardware); if (result < 0) { if (result == -EBUSY) dev_err(&dev->dev, "IRQ %d busy\n", irq); @@ -714,17 +658,12 @@ static int lirc_serial_probe(struct platform_device *dev) } /* Reserve io region. */ - /* - * Future MMAP-Developers: Attention! - * For memory mapped I/O you *might* need to use ioremap() first, - * for the NSLU2 it's done in boot code. - */ if (((iommap) && (devm_request_mem_region(&dev->dev, iommap, 8 << ioshift, - LIRC_DRIVER_NAME) == NULL)) + KBUILD_MODNAME) == NULL)) || ((!iommap) && (devm_request_region(&dev->dev, io, 8, - LIRC_DRIVER_NAME) == NULL))) { + KBUILD_MODNAME) == NULL))) { dev_err(&dev->dev, "port %04x already in use\n", io); dev_warn(&dev->dev, "use 'setserial /dev/ttySX uart none'\n"); dev_warn(&dev->dev, @@ -738,7 +677,7 @@ static int lirc_serial_probe(struct platform_device *dev) return result; /* Initialize pulse/space widths */ - init_timing_params(duty_cycle, freq); + init_timing_params(50, 38000); /* If pin is high, then this must be an active low receiver. */ if (sense == -1) { @@ -769,12 +708,12 @@ static int lirc_serial_probe(struct platform_device *dev) return 0; } -static int set_use_inc(void *data) +static int serial_ir_open(struct rc_dev *rcdev) { unsigned long flags; /* initialize timestamp */ - lastkt = ktime_get(); + serial_ir.lastkt = ktime_get(); spin_lock_irqsave(&hardware[type].lock, flags); @@ -788,8 +727,9 @@ static int set_use_inc(void *data) return 0; } -static void set_use_dec(void *data) -{ unsigned long flags; +static void serial_ir_close(struct rc_dev *rcdev) +{ + unsigned long flags; spin_lock_irqsave(&hardware[type].lock, flags); @@ -802,136 +742,44 @@ static void set_use_dec(void *data) spin_unlock_irqrestore(&hardware[type].lock, flags); } -static ssize_t lirc_write(struct file *file, const char __user *buf, - size_t n, loff_t *ppos) +static int serial_ir_tx(struct rc_dev *dev, unsigned int *txbuf, + unsigned int count) { - int i, count; unsigned long flags; long delta = 0; - int *wbuf; - - if (!(hardware[type].features & LIRC_CAN_SEND_PULSE)) - return -EPERM; + int i; - count = n / sizeof(int); - if (n % sizeof(int) || count % 2 == 0) - return -EINVAL; - wbuf = memdup_user(buf, n); - if (IS_ERR(wbuf)) - return PTR_ERR(wbuf); spin_lock_irqsave(&hardware[type].lock, flags); - if (type == LIRC_IRDEO) { + if (type == IR_IRDEO) { /* DTR, RTS down */ on(); } for (i = 0; i < count; i++) { if (i%2) - hardware[type].send_space(wbuf[i] - delta); + hardware[type].send_space(txbuf[i] - delta); else - delta = hardware[type].send_pulse(wbuf[i]); + delta = hardware[type].send_pulse(txbuf[i]); } off(); spin_unlock_irqrestore(&hardware[type].lock, flags); - kfree(wbuf); - return n; + return count; } -static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) +static int serial_ir_tx_duty_cycle(struct rc_dev *dev, u32 cycle) { - int result; - u32 __user *uptr = (u32 __user *)arg; - u32 value; - - switch (cmd) { - case LIRC_GET_SEND_MODE: - if (!(hardware[type].features&LIRC_CAN_SEND_MASK)) - return -ENOIOCTLCMD; - - result = put_user(LIRC_SEND2MODE - (hardware[type].features&LIRC_CAN_SEND_MASK), - uptr); - if (result) - return result; - break; - - case LIRC_SET_SEND_MODE: - if (!(hardware[type].features&LIRC_CAN_SEND_MASK)) - return -ENOIOCTLCMD; - - result = get_user(value, uptr); - if (result) - return result; - /* only LIRC_MODE_PULSE supported */ - if (value != LIRC_MODE_PULSE) - return -EINVAL; - break; - - case LIRC_GET_LENGTH: - return -ENOIOCTLCMD; - - case LIRC_SET_SEND_DUTY_CYCLE: - pr_debug("SET_SEND_DUTY_CYCLE\n"); - if (!(hardware[type].features&LIRC_CAN_SET_SEND_DUTY_CYCLE)) - return -ENOIOCTLCMD; - - result = get_user(value, uptr); - if (result) - return result; - if (value <= 0 || value > 100) - return -EINVAL; - return init_timing_params(value, freq); - - case LIRC_SET_SEND_CARRIER: - pr_debug("SET_SEND_CARRIER\n"); - if (!(hardware[type].features&LIRC_CAN_SET_SEND_CARRIER)) - return -ENOIOCTLCMD; - - result = get_user(value, uptr); - if (result) - return result; - if (value > 500000 || value < 20000) - return -EINVAL; - return init_timing_params(duty_cycle, value); - - default: - return lirc_dev_fop_ioctl(filep, cmd, arg); - } - return 0; + return init_timing_params(cycle, serial_ir.freq); } -static const struct file_operations lirc_fops = { - .owner = THIS_MODULE, - .write = lirc_write, - .unlocked_ioctl = lirc_ioctl, -#ifdef CONFIG_COMPAT - .compat_ioctl = lirc_ioctl, -#endif - .read = lirc_dev_fop_read, - .poll = lirc_dev_fop_poll, - .open = lirc_dev_fop_open, - .release = lirc_dev_fop_close, - .llseek = no_llseek, -}; - -static struct lirc_driver driver = { - .name = LIRC_DRIVER_NAME, - .minor = -1, - .code_length = 1, - .sample_rate = 0, - .data = NULL, - .add_to_buf = NULL, - .rbuf = &rbuf, - .set_use_inc = set_use_inc, - .set_use_dec = set_use_dec, - .fops = &lirc_fops, - .dev = NULL, - .owner = THIS_MODULE, -}; +static int serial_ir_tx_carrier(struct rc_dev *dev, u32 carrier) +{ + if (carrier > 500000 || carrier < 20000) + return -EINVAL; -static struct platform_device *lirc_serial_dev; + return init_timing_params(serial_ir.duty_cycle, carrier); +} -static int lirc_serial_suspend(struct platform_device *dev, - pm_message_t state) +static int serial_ir_suspend(struct platform_device *dev, + pm_message_t state) { /* Set DLAB 0. */ soutp(UART_LCR, sinp(UART_LCR) & (~UART_LCR_DLAB)); @@ -949,10 +797,7 @@ static int lirc_serial_suspend(struct platform_device *dev, return 0; } -/* twisty maze... need a forward-declaration here... */ -static void lirc_serial_exit(void); - -static int lirc_serial_resume(struct platform_device *dev) +static int serial_ir_resume(struct platform_device *dev) { unsigned long flags; int result; @@ -963,79 +808,68 @@ static int lirc_serial_resume(struct platform_device *dev) spin_lock_irqsave(&hardware[type].lock, flags); /* Enable Interrupt */ - lastkt = ktime_get(); + serial_ir.lastkt = ktime_get(); soutp(UART_IER, sinp(UART_IER)|UART_IER_MSI); off(); - lirc_buffer_clear(&rbuf); - spin_unlock_irqrestore(&hardware[type].lock, flags); return 0; } -static struct platform_driver lirc_serial_driver = { - .probe = lirc_serial_probe, - .suspend = lirc_serial_suspend, - .resume = lirc_serial_resume, +static struct platform_driver serial_ir_driver = { + .probe = serial_ir_probe, + .suspend = serial_ir_suspend, + .resume = serial_ir_resume, .driver = { - .name = "lirc_serial", + .name = "serial_ir", }, }; -static int __init lirc_serial_init(void) +static int __init serial_ir_init(void) { int result; - /* Init read buffer. */ - result = lirc_buffer_init(&rbuf, sizeof(int), RBUF_LEN); - if (result < 0) + result = platform_driver_register(&serial_ir_driver); + if (result) return result; - result = platform_driver_register(&lirc_serial_driver); - if (result) { - printk("lirc register returned %d\n", result); - goto exit_buffer_free; - } - - lirc_serial_dev = platform_device_alloc("lirc_serial", 0); - if (!lirc_serial_dev) { + serial_ir.pdev = platform_device_alloc("serial_ir", 0); + if (!serial_ir.pdev) { result = -ENOMEM; goto exit_driver_unregister; } - result = platform_device_add(lirc_serial_dev); + result = platform_device_add(serial_ir.pdev); if (result) goto exit_device_put; return 0; exit_device_put: - platform_device_put(lirc_serial_dev); + platform_device_put(serial_ir.pdev); exit_driver_unregister: - platform_driver_unregister(&lirc_serial_driver); -exit_buffer_free: - lirc_buffer_free(&rbuf); + platform_driver_unregister(&serial_ir_driver); return result; } -static void lirc_serial_exit(void) +static void serial_ir_exit(void) { - platform_device_unregister(lirc_serial_dev); - platform_driver_unregister(&lirc_serial_driver); - lirc_buffer_free(&rbuf); + platform_device_unregister(serial_ir.pdev); + platform_driver_unregister(&serial_ir_driver); } -static int __init lirc_serial_init_module(void) +static int __init serial_ir_init_module(void) { + struct rc_dev *rcdev; int result; switch (type) { - case LIRC_HOMEBREW: - case LIRC_IRDEO: - case LIRC_IRDEO_REMOTE: - case LIRC_ANIMAX: - case LIRC_IGOR: + case IR_HOMEBREW: + case IR_IRDEO: + case IR_IRDEO_REMOTE: + case IR_ANIMAX: + case IR_IGOR: /* if nothing specified, use ttyS0/com1 and irq 4 */ io = io ? io : 0x3f8; irq = irq ? irq : 4; @@ -1045,11 +879,10 @@ static int __init lirc_serial_init_module(void) } if (!softcarrier) { switch (type) { - case LIRC_HOMEBREW: - case LIRC_IGOR: - hardware[type].features &= - ~(LIRC_CAN_SET_SEND_DUTY_CYCLE| - LIRC_CAN_SET_SEND_CARRIER); + case IR_HOMEBREW: + case IR_IGOR: + hardware[type].set_send_carrier = false; + hardware[type].set_duty_cycle = false; break; } } @@ -1058,73 +891,111 @@ static int __init lirc_serial_init_module(void) if (sense != -1) sense = !!sense; - result = lirc_serial_init(); + result = serial_ir_init(); if (result) return result; - driver.features = hardware[type].features; - driver.dev = &lirc_serial_dev->dev; - driver.minor = lirc_register_driver(&driver); - if (driver.minor < 0) { - pr_err("register_chrdev failed!\n"); - lirc_serial_exit(); - return driver.minor; + rcdev = devm_rc_allocate_device(&serial_ir.pdev->dev); + if (!rcdev) { + result = -ENOMEM; + goto serial_cleanup; } - return 0; + + if (hardware[type].send_pulse && hardware[type].send_space) + rcdev->tx_ir = serial_ir_tx; + if (hardware[type].set_send_carrier) + rcdev->s_tx_carrier = serial_ir_tx_carrier; + if (hardware[type].set_duty_cycle) + rcdev->s_tx_duty_cycle = serial_ir_tx_duty_cycle; + + switch (type) { + case IR_HOMEBREW: + rcdev->input_name = "Serial IR type home-brew"; + break; + case IR_IRDEO: + rcdev->input_name = "Serial IR type IRdeo"; + break; + case IR_IRDEO_REMOTE: + rcdev->input_name = "Serial IR type IRdeo remote"; + break; + case IR_ANIMAX: + rcdev->input_name = "Serial IR type AnimaX"; + break; + case IR_IGOR: + rcdev->input_name = "Serial IR type IgorPlug"; + break; + } + + 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->open = serial_ir_open; + rcdev->close = serial_ir_close; + rcdev->dev.parent = &serial_ir.pdev->dev; + rcdev->driver_type = RC_DRIVER_IR_RAW; + rcdev->allowed_protocols = RC_BIT_ALL; + rcdev->driver_name = KBUILD_MODNAME; + rcdev->map_name = RC_MAP_RC6_MCE; + rcdev->timeout = IR_DEFAULT_TIMEOUT; + rcdev->rx_resolution = 250000; + + serial_ir.rcdev = rcdev; + + result = rc_register_device(rcdev); + + if (!result) + return 0; +serial_cleanup: + serial_ir_exit(); + return result; } -static void __exit lirc_serial_exit_module(void) +static void __exit serial_ir_exit_module(void) { - lirc_unregister_driver(driver.minor); - lirc_serial_exit(); - pr_debug("cleaned up module\n"); + rc_unregister_device(serial_ir.rcdev); + serial_ir_exit(); } - -module_init(lirc_serial_init_module); -module_exit(lirc_serial_exit_module); +module_init(serial_ir_init_module); +module_exit(serial_ir_exit_module); MODULE_DESCRIPTION("Infra-red receiver driver for serial ports."); -MODULE_AUTHOR("Ralph Metzler, Trent Piepho, Ben Pfaff, " - "Christoph Bartelmus, Andrei Tanas"); +MODULE_AUTHOR("Ralph Metzler, Trent Piepho, Ben Pfaff, Christoph Bartelmus, Andrei Tanas"); MODULE_LICENSE("GPL"); -module_param(type, int, S_IRUGO); -MODULE_PARM_DESC(type, "Hardware type (0 = home-brew, 1 = IRdeo," - " 2 = IRdeo Remote, 3 = AnimaX, 4 = IgorPlug," - " 5 = NSLU2 RX:CTS2/TX:GreenLED)"); +module_param(type, int, 0444); +MODULE_PARM_DESC(type, "Hardware type (0 = home-brew, 1 = IRdeo, 2 = IRdeo Remote, 3 = AnimaX, 4 = IgorPlug"); -module_param(io, int, S_IRUGO); +module_param(io, int, 0444); MODULE_PARM_DESC(io, "I/O address base (0x3f8 or 0x2f8)"); /* some architectures (e.g. intel xscale) have memory mapped registers */ -module_param(iommap, bool, S_IRUGO); -MODULE_PARM_DESC(iommap, "physical base for memory mapped I/O" - " (0 = no memory mapped io)"); +module_param(iommap, bool, 0444); +MODULE_PARM_DESC(iommap, "physical base for memory mapped I/O (0 = no memory mapped io)"); /* * some architectures (e.g. intel xscale) align the 8bit serial registers * on 32bit word boundaries. * See linux-kernel/drivers/tty/serial/8250/8250.c serial_in()/out() */ -module_param(ioshift, int, S_IRUGO); +module_param(ioshift, int, 0444); MODULE_PARM_DESC(ioshift, "shift I/O register offset (0 = no shift)"); -module_param(irq, int, S_IRUGO); +module_param(irq, int, 0444); MODULE_PARM_DESC(irq, "Interrupt (4 or 3)"); -module_param(share_irq, bool, S_IRUGO); +module_param(share_irq, bool, 0444); MODULE_PARM_DESC(share_irq, "Share interrupts (0 = off, 1 = on)"); -module_param(sense, int, S_IRUGO); -MODULE_PARM_DESC(sense, "Override autodetection of IR receiver circuit" - " (0 = active high, 1 = active low )"); +module_param(sense, int, 0444); +MODULE_PARM_DESC(sense, "Override autodetection of IR receiver circuit (0 = active high, 1 = active low )"); -#ifdef CONFIG_LIRC_SERIAL_TRANSMITTER -module_param(txsense, bool, S_IRUGO); -MODULE_PARM_DESC(txsense, "Sense of transmitter circuit" - " (0 = active high, 1 = active low )"); +#ifdef CONFIG_IR_SERIAL_TRANSMITTER +module_param(txsense, bool, 0444); +MODULE_PARM_DESC(txsense, "Sense of transmitter circuit (0 = active high, 1 = active low )"); #endif -module_param(softcarrier, bool, S_IRUGO); +module_param(softcarrier, bool, 0444); MODULE_PARM_DESC(softcarrier, "Software carrier (0 = off, 1 = on, default on)"); |