* [RFC PATCH 1/4] Changes to core input subsystem to allow send and receive of IR messages. Encode and decode state machines are provided for common IR porotocols such as Sony, JVC, NEC, Philips, etc.
2008-09-29 16:17 [RFC PATCH 0/4] Implementation of IR support using the input subsystem Jon Smirl
@ 2008-09-29 16:17 ` Jon Smirl
2008-09-29 16:17 ` [RFC PATCH 2/4] Example of PowerPC device tree support for GPT based IR Jon Smirl
` (3 subsequent siblings)
4 siblings, 0 replies; 11+ messages in thread
From: Jon Smirl @ 2008-09-29 16:17 UTC (permalink / raw)
To: linux-kernel, lirc-list, lirc
Received IR messages generate event in the input queue.
IR messages are sent using an input IOCTL.
Jon Smirl
<jonsmirl@gmail.com>
---
drivers/input/Kconfig | 2
drivers/input/Makefile | 3
drivers/input/evdev.c | 55 +++++
drivers/input/input.c | 4
drivers/input/ir-core.c | 523 +++++++++++++++++++++++++++++++++++++++++++++
drivers/input/ir/Kconfig | 14 +
drivers/input/ir/Makefile | 5
include/linux/input.h | 70 ++++++
8 files changed, 675 insertions(+), 1 deletions(-)
create mode 100644 drivers/input/ir-core.c
create mode 100644 drivers/input/ir/Kconfig
create mode 100644 drivers/input/ir/Makefile
diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig
index 747633c..780d321 100644
--- a/drivers/input/Kconfig
+++ b/drivers/input/Kconfig
@@ -172,6 +172,8 @@ source "drivers/input/touchscreen/Kconfig"
source "drivers/input/misc/Kconfig"
+source "drivers/input/ir/Kconfig"
+
endif
menu "Hardware I/O ports"
diff --git a/drivers/input/Makefile b/drivers/input/Makefile
index 6a1049b..da47340 100644
--- a/drivers/input/Makefile
+++ b/drivers/input/Makefile
@@ -5,7 +5,7 @@
# Each configuration option enables a list of files.
obj-$(CONFIG_INPUT) += input-core.o
-input-core-objs := input.o ff-core.o
+input-core-objs := input.o ff-core.o ir-core.o
obj-$(CONFIG_INPUT_FF_MEMLESS) += ff-memless.o
obj-$(CONFIG_INPUT_POLLDEV) += input-polldev.o
@@ -21,6 +21,7 @@ obj-$(CONFIG_INPUT_JOYSTICK) += joystick/
obj-$(CONFIG_INPUT_TABLET) += tablet/
obj-$(CONFIG_INPUT_TOUCHSCREEN) += touchscreen/
obj-$(CONFIG_INPUT_MISC) += misc/
+obj-$(CONFIG_INPUT_IR) += ir/
obj-$(CONFIG_INPUT_APMPOWER) += apm-power.o
diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c
index 3524bef..7a3f935 100644
--- a/drivers/input/evdev.c
+++ b/drivers/input/evdev.c
@@ -329,6 +329,14 @@ struct ff_effect_compat {
} u;
};
+struct ir_command_compat {
+ __u32 protocol;
+ __u32 device;
+ __u32 command;
+ __u32 transmitters;
+};
+
+
/* Note to the author of this code: did it ever occur to
you why the ifdefs are needed? Think about it again. -AK */
#ifdef CONFIG_X86_64
@@ -433,6 +441,32 @@ static int evdev_ff_effect_from_user(const char __user *buffer, size_t size,
return 0;
}
+static int evdev_ir_send_from_user(const char __user *buffer, size_t size,
+ struct ir_command *ir_command)
+{
+ if (COMPAT_TEST) {
+ struct ir_command_compat *compat_ir_command;
+
+ if (size != sizeof(struct ir_command_compat))
+ return -EINVAL;
+
+ compat_ir_command = (struct ir_command_compat *)ir_command;
+
+ if (copy_from_user(compat_ir_command, buffer,
+ sizeof(struct ir_command_compat)))
+ return -EFAULT;
+
+ } else {
+ if (size != sizeof(struct ir_command))
+ return -EINVAL;
+
+ if (copy_from_user(ir_command, buffer, sizeof(struct ir_command)))
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
#else
static inline size_t evdev_event_size(void)
@@ -470,6 +504,18 @@ static int evdev_ff_effect_from_user(const char __user *buffer, size_t size,
return 0;
}
+static int evdev_ir_send_from_user(const char __user *buffer, size_t size,
+ struct ir_command *ir_command)
+{
+ if (size != sizeof(struct ir_command))
+ return -EINVAL;
+
+ if (copy_from_user(ir_command, buffer, sizeof(struct ir_command)))
+ return -EFAULT;
+
+ return 0;
+}
+
#endif /* CONFIG_COMPAT */
static ssize_t evdev_write(struct file *file, const char __user *buffer,
@@ -696,6 +742,7 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
struct input_dev *dev = evdev->handle.dev;
struct input_absinfo abs;
struct ff_effect effect;
+ struct ir_command ir_command;
int __user *ip = (int __user *)p;
int i, t, u, v;
int error;
@@ -860,6 +907,14 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
return 0;
}
+
+ if (_IOC_NR(cmd) == _IOC_NR(EVIOIRSEND)) {
+
+ if (evdev_ir_send_from_user(p, _IOC_SIZE(cmd), &ir_command))
+ return -EFAULT;
+
+ return input_ir_send(dev, &ir_command, file);
+ }
}
}
return -EINVAL;
diff --git a/drivers/input/input.c b/drivers/input/input.c
index c13ced3..2159be8 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -240,6 +240,10 @@ static void input_handle_event(struct input_dev *dev,
case EV_PWR:
disposition = INPUT_PASS_TO_ALL;
break;
+
+ case EV_IR:
+ disposition = INPUT_PASS_TO_ALL;
+ break;
}
if (disposition != INPUT_IGNORE_EVENT && type != EV_SYN)
diff --git a/drivers/input/ir-core.c b/drivers/input/ir-core.c
new file mode 100644
index 0000000..2f0595c
--- /dev/null
+++ b/drivers/input/ir-core.c
@@ -0,0 +1,523 @@
+/*
+ * Core routines for IR support
+ *
+ * Copyright (C) 2008 Jon Smirl <jonsmirl@gmail.com>
+ */
+
+#include <linux/input.h>
+
+static int encode_sony(struct ir_device *ir, struct ir_command *command)
+{
+ /* Sony SIRC IR code */
+ /* http://www.sbprojects.com/knowledge/ir/sirc.htm */
+ int i, bit, dev, cmd, total;
+
+ ir->count = 0;
+ switch (command->protocol) {
+ default:
+ case IR_PROTOCOL_SONY_12:
+ dev = 5; cmd = 7; break;
+ case IR_PROTOCOL_SONY_15:
+ dev = 8; cmd = 7; break;
+ case IR_PROTOCOL_SONY_20:
+ dev = 10; cmd = 10; break;
+ }
+ ir->buffer[ir->count++] = 2400;
+ ir->buffer[ir->count++] = 600;
+
+ for (i = 0; i < cmd; i++) {
+ bit = command->command & 1;
+ command->command >>= 1;
+ ir->buffer[ir->count++] = (bit ? 1200 : 600);
+ ir->buffer[ir->count++] = 600;
+ }
+ for (i = 0; i < dev; i++) {
+ bit = command->device & 1;
+ command->device >>= 1;
+ ir->buffer[ir->count++] = (bit ? 1200 : 600);
+ ir->buffer[ir->count++] = 600;
+ }
+ total = 0;
+ for (i = 0; i < ir->count; i++)
+ total += ir->buffer[i];
+ ir->buffer[ir->count++] = 45000 - total;
+
+ memcpy(&ir->buffer[ir->count], &ir->buffer[0], ir->count * sizeof ir->buffer[0]);
+ ir->count += ir->count;
+ memcpy(&ir->buffer[ir->count], &ir->buffer[0], ir->count * sizeof ir->buffer[0]);
+ ir->count += ir->count;
+
+ return 0;
+}
+
+static int decode_sony(struct input_dev *dev, struct ir_protocol *sony, unsigned int d, unsigned int bit)
+{
+ /* Sony SIRC IR code */
+ /* http://www.sbprojects.com/knowledge/ir/sirc.htm */
+ /* based on a 600us cadence */
+ int ret = 0, delta = d;
+
+ delta = (delta + 300) / 600;
+ printk("D %d %d %d\n", d, delta, bit);
+
+ if ((bit == 0) && (delta > 22)) {
+ printk("SIRC state 1\n");
+ if ((sony->state == 26) || (sony->state == 32) || (sony->state == 42)) {
+ if (sony->good && (sony->good == sony->code)) {
+
+ input_report_ir(dev, IR_PROTOCOL, (sony->state == 26) ? IR_PROTOCOL_SONY_12 :
+ (sony->state == 32) ? IR_PROTOCOL_SONY_15 : IR_PROTOCOL_SONY_20);
+
+ if (sony->state == 26) {
+ input_report_ir(dev, IR_DEVICE, sony->code & 0x1F);
+ input_report_ir(dev, IR_COMMAND, sony->code >> 5);
+ } else {
+ input_report_ir(dev, IR_DEVICE, sony->code & 0xFF);
+ input_report_ir(dev, IR_COMMAND, sony->code >> 8);
+ }
+ input_sync(dev);
+
+ sony->good = 0;
+ ret = 1;
+ } else {
+ printk("SIRC - Saving %d bit %05x\n", (sony->state - 2) / 2, sony->code);
+ sony->good = sony->code;
+ }
+ }
+ sony->state = 1;
+ sony->code = 0;
+ return ret;
+ }
+ if ((sony->state == 1) && (bit == 1) && (delta == 4)) {
+ sony->state = 2;
+ printk("SIRC state 2\n");
+ return 0;
+ }
+ if ((sony->state == 2) && (bit == 0) && (delta == 1)) {
+ sony->state = 3;
+ printk("SIRC state 3\n");
+ return 0;
+ }
+ if ((sony->state >= 3) && (sony->state & 1) && (bit == 1) && ((delta == 1) || (delta == 2))) {
+ sony->state++;
+ sony->code |= ((delta - 1) << ((sony->state - 4) / 2));
+ printk("SIRC state %d bit %d\n", sony->state, delta - 1);
+ return 0;
+ }
+ if ((sony->state >= 3) && !(sony->state & 1) && (bit == 0) && (delta == 1)) {
+ sony->state++;
+ printk("SIRC state %d\n", sony-> state);
+ return 0;
+ }
+ sony->state = 0;
+ return 0;
+}
+
+
+static int encode_jvc(struct ir_device *ir, struct ir_command *command)
+{
+ /* JVC IR code */
+ /* http://www.sbprojects.com/knowledge/ir/jvc.htm */
+ int i, bit, total;
+
+ ir->count = 0;
+
+ ir->buffer[ir->count++] = 8400;
+ ir->buffer[ir->count++] = 4200;
+
+ for (i = 0; i < 8; i++) {
+ bit = command->device & 1;
+ command->device >>= 1;
+ ir->buffer[ir->count++] = 525;
+ ir->buffer[ir->count++] = (bit ? 1575 : 525);
+ }
+ for (i = 0; i < 8; i++) {
+ bit = command->command & 1;
+ command->command >>= 1;
+ ir->buffer[ir->count++] = 525;
+ ir->buffer[ir->count++] = (bit ? 1575 : 525);
+ }
+ ir->buffer[ir->count++] = 525;
+
+ total = 0;
+ for (i = 0; i < ir->count; i++)
+ total += ir->buffer[i];
+ ir->buffer[ir->count] = 55000 - total;
+
+ return 0;
+}
+
+static int decode_jvc(struct input_dev *dev, struct ir_protocol *jvc, unsigned int d, unsigned int bit)
+{
+ /* JVC IR code */
+ /* http://www.sbprojects.com/knowledge/ir/jvc.htm */
+ /* based on a 525us cadence */
+ int ret = 0, delta = d;
+
+ delta = (delta + 263) / 525;
+ //printk("D %d %d %d\n", d, delta, bit);
+
+ if ((bit == 0) && (delta > 22)) {
+ //printk("JVC state 1\n");
+ jvc->state = 1;
+ jvc->code = 0;
+ return ret;
+ }
+ if ((jvc->state == 1) && (bit == 1) && (delta == 16)) {
+ jvc->state = 2;
+ //printk("JVC state 2\n");
+ return 0;
+ }
+ if ((jvc->state == 2) && (bit == 0) && (delta == 8)) {
+ jvc->state = 3;
+ //printk("JVC state 3\n");
+ return 0;
+ }
+ if ((jvc->state >= 3) && (jvc->state & 1) && (bit == 1) && (delta == 1)) {
+ jvc->state++;
+ //printk("JVC state %d\n", jvc-> state);
+ return 0;
+ }
+ if ((jvc->state >= 3) && !(jvc->state & 1) && (bit == 0) && ((delta == 1) || (delta == 3))) {
+ if (delta == 3)
+ jvc->code |= 1 << ((jvc->state - 4) / 2);
+ jvc->state++;
+ //printk("JVC state %d bit %d\n", jvc->state, delta - 1);
+ if (jvc->state == 34) {
+ jvc->state = 3;
+ if (jvc->good && (jvc->good == jvc->code)) {
+ input_report_ir(dev, IR_PROTOCOL, IR_PROTOCOL_JVC);
+ input_report_ir(dev, IR_DEVICE, jvc->code >> 8);
+ input_report_ir(dev, IR_COMMAND, jvc->code & 0xFF);
+ input_sync(dev);
+ jvc->good = 0;
+ ret = 1;
+ } else {
+ //printk("JVC - Saving 16 bit %05x\n", jvc->code);
+ jvc->good = jvc->code;
+ }
+ jvc->code = 0;
+ }
+ return 0;
+ }
+ jvc->state = 0;
+ return 0;
+}
+
+
+static int encode_nec(struct ir_device *ir, struct ir_command *command)
+{
+ /* NEC IR code */
+ /* http://www.sbprojects.com/knowledge/ir/nec.htm */
+ int i, bit, total;
+
+ ir->count = 0;
+
+ ir->buffer[ir->count++] = 9000;
+ ir->buffer[ir->count++] = 4500;
+
+ for (i = 0; i < 8; i++) {
+ bit = command->device & 1;
+ command->device >>= 1;
+ ir->buffer[ir->count++] = 563;
+ ir->buffer[ir->count++] = (bit ? 1687 : 562);
+ }
+ for (i = 0; i < 8; i++) {
+ bit = command->command & 1;
+ command->command >>= 1;
+ ir->buffer[ir->count++] = 563;
+ ir->buffer[ir->count++] = (bit ? 1687 : 562);
+ }
+ ir->buffer[ir->count++] = 562;
+
+ total = 0;
+ for (i = 0; i < ir->count; i++)
+ total += ir->buffer[i];
+ ir->buffer[ir->count] = 110000 - total;
+
+ return 0;
+}
+
+static int decode_nec(struct input_dev *dev, struct ir_protocol *nec, unsigned int d, unsigned int bit)
+{
+ /* NEC IR code */
+ /* http://www.sbprojects.com/knowledge/ir/nec.htm */
+ /* based on a 560us cadence */
+ int delta = d;
+
+ delta = (delta + 280) / 560;
+ //printk("D %d %d %d\n", d, delta, bit);
+
+ if ((bit == 0) && (delta > 22)) {
+ //printk("nec state 1\n");
+ nec->state = 1;
+ nec->code = 0;
+ return 0;
+ }
+ if ((nec->state == 1) && (bit == 1) && (delta == 16)) {
+ nec->state = 2;
+ //printk("nec state 2\n");
+ return 0;
+ }
+ if ((nec->state == 2) && (bit == 0) && (delta == 8)) {
+ nec->state = 3;
+ //printk("nec state 3\n");
+ return 0;
+ }
+ if ((nec->state >= 3) && (nec->state & 1) && (bit == 1) && (delta == 1)) {
+ nec->state++;
+ //printk("nec state %d\n", nec-> state);
+ if (nec->state == 68) {
+ input_report_ir(dev, IR_PROTOCOL, IR_PROTOCOL_NEC);
+ input_report_ir(dev, IR_DEVICE, nec->code >> 16);
+ input_report_ir(dev, IR_COMMAND, nec->code & 0xFFFF);
+ input_sync(dev);
+ return 1;
+ }
+ return 0;
+ }
+ if ((nec->state >= 3) && !(nec->state & 1) && (bit == 0) && ((delta == 1) || (delta == 3))) {
+ if (delta == 3)
+ nec->code |= 1 << ((nec->state - 4) / 2);
+ nec->state++;
+ //printk("nec state %d bit %d\n", nec->state, delta - 1);
+ return 0;
+ }
+ nec->state = 0;
+ nec->code = 0;
+ return 0;
+}
+
+
+static int encode_rc5(struct ir_device *ir, struct ir_command *command)
+{
+ /* Philips RC-5 IR code */
+ /* http://www.sbprojects.com/knowledge/ir/rc5.htm */
+ return 0;
+}
+
+static int decode_rc5(struct input_dev *dev, struct ir_protocol *rc5, unsigned int d, unsigned int bit)
+{
+ /* Philips RC-5 IR code */
+ /* http://www.sbprojects.com/knowledge/ir/rc5.htm */
+ /* based on a 889us cadence */
+ int delta = d;
+
+ delta = (delta + 444) / 889;
+ //printk("D %d %d %d\n", d, delta, bit);
+
+ return 0;
+}
+
+
+static int encode_rc6(struct ir_device *ir, struct ir_command *command)
+{
+ /* Philips RC-6 IR code */
+ /* http://www.sbprojects.com/knowledge/ir/rc6.htm */
+ int i, bit, last;
+
+ ir->count = 0;
+
+ ir->buffer[ir->count++] = 2666;
+ ir->buffer[ir->count++] = 889;
+
+ ir->buffer[ir->count++] = 444;
+ ir->buffer[ir->count++] = 444;
+
+ last = 1;
+ for (i = 0; i < 8; i++) {
+ bit = command->device & 1;
+ command->device >>= 1;
+
+ if (last != bit)
+ ir->buffer[ir->count - 1] += 444;
+ else
+ ir->buffer[ir->count++] = 444;
+ ir->buffer[ir->count++] = 444;
+ last = bit;
+ }
+ for (i = 0; i < 8; i++) {
+ bit = command->command & 1;
+ command->command >>= 1;
+
+ if (last != bit)
+ ir->buffer[ir->count - 1] += 444;
+ else
+ ir->buffer[ir->count++] = 444;
+ ir->buffer[ir->count++] = 444;
+ last = bit;
+ }
+ ir->buffer[ir->count] = 2666;
+
+ return 0;
+}
+
+static void decode_rc6_bit(struct input_dev *dev, struct ir_protocol *rc6, unsigned int bit)
+{
+ /* bits come in one at a time */
+ /* when two are collected look for a symbol */
+ /* rc6->bits == 1 is a zero symbol */
+ /* rc6->bits == 2 is a one symbol */
+ rc6->count++;
+ rc6->bits <<= 1;
+ rc6->bits |= bit;
+ if (rc6->count == 2) {
+ if ((rc6->bits == 0) || (rc6->bits == 3)) {
+ rc6->mode = rc6->code;
+ rc6->code = 0;
+ } else {
+ rc6->code <<= 1;
+ if (rc6->bits == 2)
+ rc6->code |= 1;
+ }
+ rc6->count = 0;
+ if (rc6->state == 23) {
+ input_report_ir(dev, IR_PROTOCOL, IR_PROTOCOL_PHILIPS_RC6);
+ input_report_ir(dev, IR_DEVICE, rc6->code >> 8);
+ input_report_ir(dev, IR_COMMAND, rc6->code & 0xFF);
+ input_sync(dev);
+ rc6->state = 0;
+ } else
+ rc6->state++;
+ //printk("rc6 state %d bit %d\n", rc6->state, rc6->bits == 2);
+ rc6->bits = 0;
+ }
+}
+
+static int decode_rc6(struct input_dev *dev, struct ir_protocol *rc6, unsigned int d, unsigned int bit)
+{
+ /* Philips RC-6 IR code */
+ /* http://www.sbprojects.com/knowledge/ir/rc6.htm */
+ /* based on a 444us cadence */
+
+ int delta = d;
+
+ delta = (delta + 222) / 444;
+ //printk("D %d %d %d\n", d, delta, bit);
+
+ if ((bit == 0) && (delta > 19)) {
+ rc6->count = 0;
+ rc6->bits = 0;
+ rc6->state = 1;
+ rc6->code = 0;
+ //printk("rc6 state 1\n");
+ return 0;
+ }
+ if ((rc6->state == 1) && (bit == 1) && (delta == 6)) {
+ rc6->state = 2;
+ //printk("rc6 state 2\n");
+ return 0;
+ }
+ if ((rc6->state == 2) && (bit == 0) && (delta == 2)) {
+ rc6->state = 3;
+ //printk("rc6 state 3\n");
+ return 0;
+ }
+ if (rc6->state >= 3) {
+ if ((delta >= 1) || (delta <= 3)) {
+ while (delta-- >= 1)
+ decode_rc6_bit(dev, rc6, bit);
+ return 0;
+ }
+ }
+ rc6->state = 0;
+ rc6->code = 0;
+ return 0;
+}
+
+void input_ir_decode(struct input_dev *dev, unsigned int delta, unsigned int bit)
+{
+ decode_sony(dev, &dev->ir->sony, delta, bit);
+ decode_jvc(dev, &dev->ir->jvc, delta, bit);
+ decode_nec(dev, &dev->ir->nec, delta, bit);
+ decode_rc5(dev, &dev->ir->rc5, delta, bit);
+ decode_rc6(dev, &dev->ir->rc6, delta, bit);
+}
+EXPORT_SYMBOL_GPL(input_ir_decode);
+
+
+int input_ir_create(struct input_dev *dev, void *private, send_func send)
+{
+ dev->ir = kzalloc(sizeof(struct ir_device), GFP_KERNEL);
+ if (!dev->ir)
+ return -ENOMEM;
+
+ dev->evbit[0] = BIT_MASK(EV_IR);
+ dev->ir->private = private;
+ dev->ir->send = send;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(input_ir_create);
+
+
+void input_ir_destroy(struct input_dev *dev)
+{
+ if (dev->ir) {
+ kfree(dev->ir);
+ dev->ir = NULL;
+ }
+}
+EXPORT_SYMBOL_GPL(input_ir_destroy);
+
+int input_ir_send(struct input_dev *dev, struct ir_command *ir_command, struct file *file)
+{
+ unsigned freq, xmit = 0;
+ int ret;
+
+ mutex_lock(&dev->ir->lock);
+
+ switch (ir_command->protocol) {
+ case IR_PROTOCOL_PHILIPS_RC5:
+ freq = 36000;
+ encode_rc5(dev->ir, ir_command);
+ break;
+ case IR_PROTOCOL_PHILIPS_RC6:
+ freq = 36000;
+ encode_rc6(dev->ir, ir_command);
+ break;
+ case IR_PROTOCOL_PHILIPS_RCMM:
+ freq = 36000;
+ encode_rc5(dev->ir, ir_command);
+ break;
+ case IR_PROTOCOL_JVC:
+ freq = 38000;
+ encode_jvc(dev->ir, ir_command);
+ break;
+ case IR_PROTOCOL_NEC:
+ freq = 38000;
+ encode_nec(dev->ir, ir_command);
+ break;
+ case IR_PROTOCOL_NOKIA:
+ case IR_PROTOCOL_SHARP:
+ case IR_PROTOCOL_PHILIPS_RECS80:
+ freq = 38000;
+ break;
+ case IR_PROTOCOL_SONY_12:
+ case IR_PROTOCOL_SONY_15:
+ case IR_PROTOCOL_SONY_20:
+ encode_sony(dev->ir, ir_command);
+ freq = 40000;
+ break;
+ case IR_PROTOCOL_RCA:
+ freq = 56000;
+ break;
+ case IR_PROTOCOL_ITT:
+ freq = 0;
+ break;
+ default:
+ ret = -ENODEV;
+ goto exit;
+ }
+
+ if (dev->ir && dev->ir->send)
+ ret = dev->ir->send(dev->ir->private, dev->ir->buffer, dev->ir->count, freq, xmit);
+ else
+ ret = -ENODEV;
+
+exit:
+ mutex_unlock(&dev->ir->lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(input_ir_send);
+
diff --git a/drivers/input/ir/Kconfig b/drivers/input/ir/Kconfig
new file mode 100644
index 0000000..8afd2d6
--- /dev/null
+++ b/drivers/input/ir/Kconfig
@@ -0,0 +1,14 @@
+#
+# LIRC driver(s) configuration
+#
+menuconfig INPUT_IR
+ bool "Infrared Remote (IR) receiver/transmitter drivers"
+ default n
+ help
+ Say Y here, and all supported Infrared Remote Control IR
+ receiver and transmitter drivers will be displayed. The receiver drivers
+ allow control of your Linux system via remote control.
+
+if INPUT_IR
+
+endif
diff --git a/drivers/input/ir/Makefile b/drivers/input/ir/Makefile
new file mode 100644
index 0000000..08e6954
--- /dev/null
+++ b/drivers/input/ir/Makefile
@@ -0,0 +1,5 @@
+# Makefile for the ir drivers.
+#
+
+# Each configuration option enables a list of files.
+
diff --git a/include/linux/input.h b/include/linux/input.h
index a5802c9..2e3be0b 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -79,6 +79,8 @@ struct input_absinfo {
#define EVIOCRMFF _IOW('E', 0x81, int) /* Erase a force effect */
#define EVIOCGEFFECTS _IOR('E', 0x84, int) /* Report number of effects playable at the same time */
+#define EVIOIRSEND _IOC(_IOC_WRITE, 'E', 0x80, sizeof(struct ir_command)) /* send an IR command */
+
#define EVIOCGRAB _IOW('E', 0x90, int) /* Grab/Release device */
/*
@@ -97,6 +99,7 @@ struct input_absinfo {
#define EV_FF 0x15
#define EV_PWR 0x16
#define EV_FF_STATUS 0x17
+#define EV_IR 0x18
#define EV_MAX 0x1f
#define EV_CNT (EV_MAX+1)
@@ -946,6 +949,36 @@ struct ff_effect {
#define FF_MAX 0x7f
#define FF_CNT (FF_MAX+1)
+/*
+ * IR Support
+ */
+
+#define IR_PROTOCOL_JVC 1
+#define IR_PROTOCOL_NEC 2
+#define IR_PROTOCOL_NOKIA 3
+#define IR_PROTOCOL_SHARP 4
+#define IR_PROTOCOL_SONY_12 5
+#define IR_PROTOCOL_SONY_15 6
+#define IR_PROTOCOL_SONY_20 7
+#define IR_PROTOCOL_PHILIPS_RC5 8
+#define IR_PROTOCOL_PHILIPS_RC6 9
+#define IR_PROTOCOL_PHILIPS_RCMM 10
+#define IR_PROTOCOL_PHILIPS_RECS80 11
+#define IR_PROTOCOL_RCA 12
+#define IR_PROTOCOL_ITT 13
+
+#define IR_PROTOCOL 1
+#define IR_DEVICE 2
+#define IR_COMMAND 3
+
+struct ir_command {
+ __u32 protocol;
+ __u32 device;
+ __u32 command;
+ __u32 transmitters;
+};
+
+
#ifdef __KERNEL__
/*
@@ -1053,6 +1086,7 @@ struct input_dev {
int (*getkeycode)(struct input_dev *dev, int scancode, int *keycode);
struct ff_device *ff;
+ struct ir_device *ir;
unsigned int repeat_key;
struct timer_list timer;
@@ -1288,6 +1322,11 @@ static inline void input_report_switch(struct input_dev *dev, unsigned int code,
input_event(dev, EV_SW, code, !!value);
}
+static inline void input_report_ir(struct input_dev *dev, unsigned int code, int value)
+{
+ input_event(dev, EV_IR, code, value);
+}
+
static inline void input_sync(struct input_dev *dev)
{
input_event(dev, EV_SYN, SYN_REPORT, 0);
@@ -1366,5 +1405,36 @@ int input_ff_erase(struct input_dev *dev, int effect_id, struct file *file);
int input_ff_create_memless(struct input_dev *dev, void *data,
int (*play_effect)(struct input_dev *, void *, struct ff_effect *));
+/**
+ * struct ir_device - IR support structures
+ */
+
+struct ir_protocol {
+ unsigned int state, code, good, count, bits, mode;
+};
+
+typedef int (*send_func)(void *private, unsigned int *buffer, unsigned int count,
+ unsigned int frequency, unsigned int xmitters);
+
+struct ir_device {
+ struct ir_protocol sony;
+ struct ir_protocol jvc;
+ struct ir_protocol nec;
+ struct ir_protocol rc5;
+ struct ir_protocol rc6;
+ send_func send;
+ void *private;
+ struct mutex lock;
+ unsigned int buffer[200];
+ unsigned int count;
+};
+
+int input_ir_create(struct input_dev *dev, void *private, send_func send);
+void input_ir_destroy(struct input_dev *dev);
+
+void input_ir_decode(struct input_dev *dev, unsigned int delta, unsigned int bit);
+int input_ir_send(struct input_dev *dev, struct ir_command *ir_command, struct file *file);
+
+
#endif
#endif
^ permalink raw reply related [flat|nested] 11+ messages in thread* [RFC PATCH 2/4] Example of PowerPC device tree support for GPT based IR
2008-09-29 16:17 [RFC PATCH 0/4] Implementation of IR support using the input subsystem Jon Smirl
2008-09-29 16:17 ` [RFC PATCH 1/4] Changes to core input subsystem to allow send and receive of IR messages. Encode and decode state machines are provided for common IR porotocols such as Sony, JVC, NEC, Philips, etc Jon Smirl
@ 2008-09-29 16:17 ` Jon Smirl
2008-09-29 16:17 ` [RFC PATCH 3/4] GPT driver for in-kernel IR support Jon Smirl
` (2 subsequent siblings)
4 siblings, 0 replies; 11+ messages in thread
From: Jon Smirl @ 2008-09-29 16:17 UTC (permalink / raw)
To: linux-kernel, lirc-list, lirc
---
arch/powerpc/boot/dts/dspeak01.dts | 19 ++++++++-----------
1 files changed, 8 insertions(+), 11 deletions(-)
diff --git a/arch/powerpc/boot/dts/dspeak01.dts b/arch/powerpc/boot/dts/dspeak01.dts
index 1d10f0a..cbb22a1 100644
--- a/arch/powerpc/boot/dts/dspeak01.dts
+++ b/arch/powerpc/boot/dts/dspeak01.dts
@@ -131,16 +131,6 @@
#gpio-cells = <2>;
};
- gpt7: timer@670 { /* General Purpose Timer in GPIO mode */
- compatible = "fsl,mpc5200b-gpt-gpio","fsl,mpc5200-gpt-gpio";
- cell-index = <7>;
- reg = <0x670 0x10>;
- interrupts = <0x1 0x10 0x0>;
- interrupt-parent = <&mpc5200_pic>;
- gpio-controller;
- #gpio-cells = <2>;
- };
-
rtc@800 { // Real time clock
compatible = "fsl,mpc5200b-rtc","fsl,mpc5200-rtc";
device_type = "rtc";
@@ -328,6 +318,14 @@
reg = <0x8000 0x4000>;
};
+ ir0: timer@670 { /* General Purpose Timer 6 in Input mode */
+ compatible = "gpt-ir";
+ cell-index = <7>;
+ reg = <0x670 0x10>;
+ interrupts = <0x1 0x10 0x0>;
+ interrupt-parent = <&mpc5200_pic>;
+ };
+
/* This is only an example device to show the usage of gpios. It maps all available
* gpios to the "gpio-provider" device.
*/
@@ -345,7 +343,6 @@
&gpt4 0 0 /* timer4 61c x2-16 */
&gpt5 0 0 /* timer5 44c x7-11 */
&gpt6 0 0 /* timer6 60c x8-15 */
- &gpt7 0 0 /* timer7 36a x17-9 */
>;
};
};
^ permalink raw reply related [flat|nested] 11+ messages in thread* [RFC PATCH 3/4] GPT driver for in-kernel IR support.
2008-09-29 16:17 [RFC PATCH 0/4] Implementation of IR support using the input subsystem Jon Smirl
2008-09-29 16:17 ` [RFC PATCH 1/4] Changes to core input subsystem to allow send and receive of IR messages. Encode and decode state machines are provided for common IR porotocols such as Sony, JVC, NEC, Philips, etc Jon Smirl
2008-09-29 16:17 ` [RFC PATCH 2/4] Example of PowerPC device tree support for GPT based IR Jon Smirl
@ 2008-09-29 16:17 ` Jon Smirl
2008-09-29 16:17 ` [RFC PATCH 4/4] Microsoft mceusb2 driver for in-kernel IR subsystem Jon Smirl
2008-09-29 20:14 ` [RFC PATCH 0/4] Implementation of IR support using the input subsystem Maxim Levitsky
4 siblings, 0 replies; 11+ messages in thread
From: Jon Smirl @ 2008-09-29 16:17 UTC (permalink / raw)
To: linux-kernel, lirc-list, lirc
GPT is a GPIO pin that is cable able of measuring the lenght of pulses.
GPTs are common on embedded systems
---
drivers/input/ir/Kconfig | 6 +
drivers/input/ir/Makefile | 1
drivers/input/ir/ir-gpt.c | 214 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 221 insertions(+), 0 deletions(-)
create mode 100644 drivers/input/ir/ir-gpt.c
diff --git a/drivers/input/ir/Kconfig b/drivers/input/ir/Kconfig
index 8afd2d6..b80ab31 100644
--- a/drivers/input/ir/Kconfig
+++ b/drivers/input/ir/Kconfig
@@ -11,4 +11,10 @@ menuconfig INPUT_IR
if INPUT_IR
+config IR_GPT
+ tristate "GPT Based IR Receiver"
+ default m
+ help
+ Driver for GPT-based IR receiver found on Digispeaker
+
endif
diff --git a/drivers/input/ir/Makefile b/drivers/input/ir/Makefile
index 08e6954..7082f1d 100644
--- a/drivers/input/ir/Makefile
+++ b/drivers/input/ir/Makefile
@@ -3,3 +3,4 @@
# Each configuration option enables a list of files.
+obj-$(CONFIG_IR_GPT) += ir-gpt.o
diff --git a/drivers/input/ir/ir-gpt.c b/drivers/input/ir/ir-gpt.c
new file mode 100644
index 0000000..445ff27
--- /dev/null
+++ b/drivers/input/ir/ir-gpt.c
@@ -0,0 +1,214 @@
+/*
+ * GPT timer based IR device
+ *
+ * Copyright (C) 2008 Jon Smirl <jonsmirl@gmail.com>
+ */
+
+#define DEBUG
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/input.h>
+#include <asm/io.h>
+#include <asm/mpc52xx.h>
+
+#define MAX_SAMPLES 200
+
+struct ir_gpt {
+ int irq;
+ struct mpc52xx_gpt __iomem *regs;
+ spinlock_t lock;
+ struct work_struct queue;
+ int head, tail, previous;
+ unsigned int samples[MAX_SAMPLES];
+ struct input_dev *input;
+};
+
+static void ir_event(struct work_struct *work)
+{
+ unsigned long flags;
+ int delta, count;
+ unsigned int sample, wrap, bit;
+ struct ir_gpt *ir_gpt = container_of(work, struct ir_gpt, queue);
+
+ while (1) {
+ spin_lock_irqsave(ir_gpt->lock, flags);
+ if (ir_gpt->tail == ir_gpt->head) {
+ spin_unlock_irqrestore(ir_gpt->lock, flags);
+ break;
+ }
+ sample = ir_gpt->samples[ir_gpt->tail];
+
+ ir_gpt->tail++;
+ if (ir_gpt->tail >= MAX_SAMPLES)
+ ir_gpt->tail = 0;
+
+ spin_unlock_irqrestore(ir_gpt->lock, flags);
+
+ count = sample >> 16;
+ wrap = (sample >> 12) & 7;
+ bit = (sample >> 8) & 1;
+
+ delta = count - ir_gpt->previous;
+ delta += wrap * 0x10000;
+
+ ir_gpt->previous = count;
+
+ input_ir_decode(ir_gpt->input, delta, bit);
+ }
+}
+
+/*
+ * Interrupt handlers
+ */
+static irqreturn_t dpeak_ir_irq(int irq, void *_ir)
+{
+ unsigned long flags;
+ unsigned int sample, next;
+ struct ir_gpt *ir_gpt = _ir;
+
+ sample = in_be32(&ir_gpt->regs->status);
+ out_be32(&ir_gpt->regs->status, 0xF);
+
+ spin_lock_irqsave(ir_gpt->lock, flags);
+ ir_gpt->samples[ir_gpt->head] = sample;
+ next = ir_gpt->head + 1;
+ ir_gpt->head = (next >= MAX_SAMPLES ? 0 : next);
+ spin_unlock_irqrestore(ir_gpt->lock, flags);
+
+ schedule_work(&ir_gpt->queue);
+
+ return IRQ_HANDLED;
+}
+
+
+/* ---------------------------------------------------------------------
+ * OF platform bus binding code:
+ * - Probe/remove operations
+ * - OF device match table
+ */
+static int __devinit ir_gpt_of_probe(struct of_device *op,
+ const struct of_device_id *match)
+{
+ struct ir_gpt *ir_gpt;
+ struct resource res;
+ int ret, rc;
+
+ dev_dbg(&op->dev, "ir_gpt_of_probe\n");
+
+ /* Allocate and initialize the driver private data */
+ ir_gpt = kzalloc(sizeof *ir_gpt, GFP_KERNEL);
+ if (!ir_gpt)
+ return -ENOMEM;
+
+ ir_gpt->input = input_allocate_device();
+ if (!ir_gpt->input) {
+ ret = -ENOMEM;
+ goto free_mem;
+ }
+ ret = input_ir_create(ir_gpt->input, ir_gpt, NULL);
+ if (ret)
+ goto free_input;
+
+ ir_gpt->input->name = "GPT IR Receiver";
+ ret = input_register_device(ir_gpt->input);
+ if (ret)
+ goto free_input;
+
+ spin_lock_init(&ir_gpt->lock);
+ INIT_WORK (&ir_gpt->queue, ir_event);
+
+ /* Fetch the registers and IRQ of the GPT */
+ if (of_address_to_resource(op->node, 0, &res)) {
+ dev_err(&op->dev, "Missing reg property\n");
+ ret = -ENODEV;
+ goto free_input;
+ }
+ ir_gpt->regs = ioremap(res.start, 1 + res.end - res.start);
+ if (!ir_gpt->regs) {
+ dev_err(&op->dev, "Could not map registers\n");
+ ret = -ENODEV;
+ goto free_input;
+ }
+ ir_gpt->irq = irq_of_parse_and_map(op->node, 0);
+ if (ir_gpt->irq == NO_IRQ) {
+ ret = -ENODEV;
+ goto free_input;
+ }
+ dev_dbg(&op->dev, "ir_gpt_of_probe irq=%d\n", ir_gpt->irq);
+
+ rc = request_irq(ir_gpt->irq, &dpeak_ir_irq, IRQF_SHARED,
+ "gpt-ir", ir_gpt);
+ dev_dbg(&op->dev, "ir_gpt_of_probe request irq rc=%d\n", rc);
+
+ /* set prescale to ? */
+ out_be32(&ir_gpt->regs->count, 0x00870000);
+
+ /* Select input capture, enable the counter, and interrupt */
+ out_be32(&ir_gpt->regs->mode, 0x0);
+ out_be32(&ir_gpt->regs->mode, 0x00000501);
+
+ /* Save what we've done so it can be found again later */
+ dev_set_drvdata(&op->dev, ir_gpt);
+
+ printk("GPT IR Receiver driver\n");
+
+ return 0;
+
+free_input:
+ input_ir_destroy(ir_gpt->input);
+ input_free_device(ir_gpt->input);
+free_mem:
+ kfree(ir_gpt);
+ return ret;
+}
+
+static int __devexit ir_gpt_of_remove(struct of_device *op)
+{
+ struct ir_gpt *ir_gpt = dev_get_drvdata(&op->dev);
+
+ dev_dbg(&op->dev, "ir_gpt_remove()\n");
+
+ input_ir_destroy(ir_gpt->input);
+ input_free_device(ir_gpt->input);
+ kfree(ir_gpt);
+ dev_set_drvdata(&op->dev, NULL);
+
+ return 0;
+}
+
+/* Match table for of_platform binding */
+static struct of_device_id ir_gpt_match[] __devinitdata = {
+ { .compatible = "gpt-ir", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, ir_gpt_match);
+
+static struct of_platform_driver ir_gpt_driver = {
+ .match_table = ir_gpt_match,
+ .probe = ir_gpt_of_probe,
+ .remove = __devexit_p(ir_gpt_of_remove),
+ .driver = {
+ .name = "ir-gpt",
+ .owner = THIS_MODULE,
+ },
+};
+
+/* ---------------------------------------------------------------------
+ * Module setup and teardown; simply register the of_platform driver
+ */
+static int __init ir_gpt_init(void)
+{
+ return of_register_platform_driver(&ir_gpt_driver);
+}
+module_init(ir_gpt_init);
+
+static void __exit ir_gpt_exit(void)
+{
+ of_unregister_platform_driver(&ir_gpt_driver);
+}
+module_exit(ir_gpt_exit);
^ permalink raw reply related [flat|nested] 11+ messages in thread* [RFC PATCH 4/4] Microsoft mceusb2 driver for in-kernel IR subsystem
2008-09-29 16:17 [RFC PATCH 0/4] Implementation of IR support using the input subsystem Jon Smirl
` (2 preceding siblings ...)
2008-09-29 16:17 ` [RFC PATCH 3/4] GPT driver for in-kernel IR support Jon Smirl
@ 2008-09-29 16:17 ` Jon Smirl
2008-09-29 20:14 ` [RFC PATCH 0/4] Implementation of IR support using the input subsystem Maxim Levitsky
4 siblings, 0 replies; 11+ messages in thread
From: Jon Smirl @ 2008-09-29 16:17 UTC (permalink / raw)
To: linux-kernel, lirc-list, lirc
USB device commonly found on Microsoft Media Center boxes.
Hardware can send and recieve at all common IR frequencies - 36K, 38K, 40K, 56K
---
drivers/input/ir/Kconfig | 6
drivers/input/ir/Makefile | 1
drivers/input/ir/ir-mceusb2.c | 729 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 736 insertions(+), 0 deletions(-)
create mode 100644 drivers/input/ir/ir-mceusb2.c
diff --git a/drivers/input/ir/Kconfig b/drivers/input/ir/Kconfig
index b80ab31..29657d0 100644
--- a/drivers/input/ir/Kconfig
+++ b/drivers/input/ir/Kconfig
@@ -16,5 +16,11 @@ config IR_GPT
default m
help
Driver for GPT-based IR receiver found on Digispeaker
+
+config IR_MCEUSB2
+ tristate "Microsoft Media Center Ed. Receiver, v2"
+ default m
+ help
+ Driver for the Microsoft Media Center Ed. Receiver, v2
endif
diff --git a/drivers/input/ir/Makefile b/drivers/input/ir/Makefile
index 7082f1d..780de6c 100644
--- a/drivers/input/ir/Makefile
+++ b/drivers/input/ir/Makefile
@@ -4,3 +4,4 @@
# Each configuration option enables a list of files.
obj-$(CONFIG_IR_GPT) += ir-gpt.o
+obj-$(CONFIG_IR_MCEUSB2) += ir-mceusb2.o
diff --git a/drivers/input/ir/ir-mceusb2.c b/drivers/input/ir/ir-mceusb2.c
new file mode 100644
index 0000000..14f5a53
--- /dev/null
+++ b/drivers/input/ir/ir-mceusb2.c
@@ -0,0 +1,729 @@
+/*
+ * LIRC driver for Philips eHome USB Infrared Transceiver
+ * and the Microsoft MCE 2005 Remote Control
+ *
+ * (C) by Martin A. Blatter <martin_a_blatter@yahoo.com>
+ *
+ * Transmitter support and reception code cleanup.
+ * (C) by Daniel Melander <lirc@rajidae.se>
+ *
+ * Derived from ATI USB driver by Paul Miller and the original
+ * MCE USB driver by Dan Corti
+ *
+ * This driver will only work reliably with kernel version 2.6.10
+ * or higher, probably because of differences in USB device enumeration
+ * in the kernel code. Device initialization fails most of the time
+ * with earlier kernel versions.
+ *
+ **********************************************************************
+ *
+ * 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
+ *
+ */
+
+#define DEBUG
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/input.h>
+
+#define DRIVER_AUTHOR "Daniel Melander <lirc@rajidae.se>, " \
+ "Martin Blatter <martin_a_blatter@yahoo.com>"
+#define DRIVER_DESC "Philips eHome USB IR Transceiver and Microsoft " \
+ "MCE 2005 Remote Control driver"
+#define DRIVER_NAME "ir_mceusb2"
+
+#define USB_BUFLEN 16 /* USB reception buffer length */
+#define LIRCBUF_SIZE 256 /* LIRC work buffer length */
+
+/* MCE constants */
+#define MCE_CMDBUF_SIZE 384 /* MCE Command buffer length */
+#define MCE_TIME_UNIT 50 /* Approx 50us resolution */
+#define MCE_CODE_LENGTH 5 /* Normal length of packet (with header) */
+#define MCE_PACKET_SIZE 4 /* Normal length of packet (without header) */
+#define MCE_PACKET_HEADER 0x84 /* Actual header format is 0x80 + num_bytes */
+#define MCE_CONTROL_HEADER 0x9F /* MCE status header */
+#define MCE_TX_HEADER_LENGTH 3 /* # of bytes in the initializing tx header */
+#define MCE_MAX_CHANNELS 2 /* Two transmitters, hardware dependent? */
+#define MCE_DEFAULT_TX_MASK 0x03 /* Val opts: TX1=0x01, TX2=0x02, ALL=0x03 */
+#define MCE_PULSE_BIT 0x80 /* Pulse bit, MSB set == PULSE else SPACE */
+#define MCE_PULSE_MASK 0x7F /* Pulse mask */
+#define MCE_MAX_PULSE_LENGTH 0x7F /* Longest transmittable pulse symbol */
+#define MCE_PACKET_LENGTH_MASK 0x7 /* Packet length */
+
+
+/* general constants */
+#define SEND_FLAG_IN_PROGRESS 1
+#define SEND_FLAG_COMPLETE 2
+#define RECV_FLAG_IN_PROGRESS 3
+#define RECV_FLAG_COMPLETE 4
+
+#define PHILUSB_RECEIVE 1
+#define PHILUSB_SEND 2
+
+#define VENDOR_PHILIPS 0x0471
+#define VENDOR_SMK 0x0609
+#define VENDOR_TATUNG 0x1460
+#define VENDOR_GATEWAY 0x107b
+#define VENDOR_SHUTTLE 0x1308
+#define VENDOR_SHUTTLE2 0x051c
+#define VENDOR_MITSUMI 0x03ee
+#define VENDOR_TOPSEED 0x1784
+#define VENDOR_RICAVISION 0x179d
+#define VENDOR_ITRON 0x195d
+#define VENDOR_FIC 0x1509
+#define VENDOR_LG 0x043e
+#define VENDOR_MICROSOFT 0x045e
+#define VENDOR_FORMOSA 0x147a
+#define VENDOR_FINTEK 0x1934
+#define VENDOR_PINNACLE 0x2304
+
+static struct usb_device_id usb_remote_table[] = {
+ /* Philips eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x0815) },
+ /* Philips Infrared Transceiver - HP branded */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x060c) },
+ /* Philips SRM5100 */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x060d) },
+ /* Philips Infrared Transceiver - Omaura */
+ { USB_DEVICE(VENDOR_PHILIPS, 0x060f) },
+ /* SMK/Toshiba G83C0004D410 */
+ { USB_DEVICE(VENDOR_SMK, 0x031d) },
+ /* SMK eHome Infrared Transceiver (Sony VAIO) */
+ { USB_DEVICE(VENDOR_SMK, 0x0322) },
+ /* bundled with Hauppauge PVR-150 */
+ { USB_DEVICE(VENDOR_SMK, 0x0334) },
+ /* Tatung eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TATUNG, 0x9150) },
+ /* Shuttle eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_SHUTTLE, 0xc001) },
+ /* Shuttle eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_SHUTTLE2, 0xc001) },
+ /* Gateway eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_GATEWAY, 0x3009) },
+ /* Mitsumi */
+ { USB_DEVICE(VENDOR_MITSUMI, 0x2501) },
+ /* Topseed eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
+ /* Topseed HP eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0006) },
+ /* Topseed eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
+ /* Topseed eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
+ /* Ricavision internal Infrared Transceiver */
+ { USB_DEVICE(VENDOR_RICAVISION, 0x0010) },
+ /* Itron ione Libra Q-11 */
+ { USB_DEVICE(VENDOR_ITRON, 0x7002) },
+ /* FIC eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_FIC, 0x9242) },
+ /* LG eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_LG, 0x9803) },
+ /* Microsoft MCE Infrared Transceiver */
+ { USB_DEVICE(VENDOR_MICROSOFT, 0x00a0) },
+ /* Formosa eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe015) },
+ /* Formosa21 / eHome Infrared Receiver */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe016) },
+ /* Formosa aim / Trust MCE Infrared Receiver */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe017) },
+ /* Formosa Industrial Computing / Beanbag Emulation Device */
+ { USB_DEVICE(VENDOR_FORMOSA, 0xe018) },
+ /* Fintek eHome Infrared Transceiver */
+ { USB_DEVICE(VENDOR_FINTEK, 0x0602) },
+ /* Pinnacle Remote Kit */
+ { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
+ /* Terminating entry */
+ { }
+};
+
+static struct usb_device_id pinnacle_list[] = {
+ { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
+ {}
+};
+
+static struct usb_device_id xmit_inverted[] = {
+ { USB_DEVICE(VENDOR_SMK, 0x031d) },
+ { USB_DEVICE(VENDOR_SMK, 0x0322) },
+ { USB_DEVICE(VENDOR_SMK, 0x0334) },
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0001) },
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0007) },
+ { USB_DEVICE(VENDOR_TOPSEED, 0x0008) },
+ { USB_DEVICE(VENDOR_PINNACLE, 0x0225) },
+ {}
+};
+
+/* data structure for each usb remote */
+struct irctl {
+
+ /* usb */
+ struct usb_device *usbdev;
+ struct urb *urb_in;
+ struct usb_endpoint_descriptor *usb_ep_in;
+ struct usb_endpoint_descriptor *usb_ep_out;
+
+ /* buffers and dma */
+ unsigned char *buf_in;
+ unsigned int len_in;
+ dma_addr_t dma_in;
+ dma_addr_t dma_out;
+
+ struct {
+ u32 connected:1;
+ u32 pinnacle:1;
+ u32 transmitter_mask_inverted:1;
+ u32 reserved:29;
+ } flags;
+
+ /* handle sending (init strings) */
+ int send_flags;
+
+ int carrier;
+
+ struct {
+ unsigned int command, partial, delta, bit;
+ } last;
+ struct input_dev *input;
+};
+
+/* init strings */
+static char init1[] = {0x00, 0xff, 0xaa, 0xff, 0x0b};
+static char init2[] = {0xff, 0x18};
+
+static char pin_init1[] = { 0x9f, 0x07};
+static char pin_init2[] = { 0x9f, 0x13};
+static char pin_init3[] = { 0x9f, 0x0d};
+
+static void usb_remote_printdata(struct irctl *ir, char *buf, int len)
+{
+#ifdef DEBUG
+ int i;
+
+ if (len <= 0)
+ return;
+
+ dev_dbg(&ir->usbdev->dev, "data received ");
+ for (i = 0; i < len && i < USB_BUFLEN; i++)
+ printk("%02x ", buf[i] & 0xFF);
+ printk("\n");
+#endif
+}
+
+static void usb_send_callback(struct urb *urb, struct pt_regs *regs)
+{
+ struct irctl *ir = urb->context;
+ int len= urb->actual_length;
+
+ dev_dbg(&ir->usbdev->dev, "usb_send_callback (status=%d len=%d)\n", urb->status, len);
+ usb_remote_printdata(ir, urb->transfer_buffer, len);
+}
+
+
+static void usb_receive_callback(struct urb *urb, struct pt_regs *regs)
+{
+ struct irctl *ir = urb->context;
+ int len= urb->actual_length;
+
+ dev_dbg(&ir->usbdev->dev, "usb_receive_callback (status=%d len=%d)\n", urb->status, len);
+ usb_remote_printdata(ir, urb->transfer_buffer, len);
+}
+
+
+/* request incoming or send outgoing usb packet - used to initialize remote */
+static int request_packet_async(struct irctl *ir, struct usb_endpoint_descriptor *ep,
+ unsigned char *data, int size, int urb_type)
+{
+ int res;
+ struct urb *async_urb;
+ unsigned char *async_buf;
+
+ switch (urb_type) {
+ case PHILUSB_SEND:
+ case PHILUSB_RECEIVE:
+ async_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (!async_urb) {
+ dev_dbg(&ir->usbdev->dev, "Filed to allocate URB\n");
+ return -ENOMEM;
+ }
+ /* alloc buffer */
+ async_buf = kmalloc(size, GFP_KERNEL);
+ if (!async_buf) {
+ usb_free_urb(async_urb);
+ dev_dbg(&ir->usbdev->dev, "Filed to allocate async_buf\n");
+ return -ENOMEM;
+ }
+
+ if (urb_type == PHILUSB_SEND) {
+ /* outbound data */
+ usb_fill_int_urb(async_urb, ir->usbdev,
+ usb_sndintpipe(ir->usbdev, ep->bEndpointAddress),
+ async_buf, size, (usb_complete_t) usb_send_callback,
+ ir, ep->bInterval);
+
+ memcpy(async_buf, data, size);
+ dev_dbg(&ir->usbdev->dev, "request_packet_async called (size=%#x, send)\n", size);
+ } else {
+ /* inbound data */
+ usb_fill_int_urb(async_urb, ir->usbdev,
+ usb_rcvintpipe(ir->usbdev, ep->bEndpointAddress),
+ async_buf, size, (usb_complete_t) usb_receive_callback,
+ ir, ep->bInterval);
+ dev_dbg(&ir->usbdev->dev, "request_packet_async called (size=%#x, receive)\n", size);
+ }
+ break;
+ default:
+ case 0:
+ /* standard request */
+ async_urb = ir->urb_in;
+ ir->send_flags = RECV_FLAG_IN_PROGRESS;
+ dev_dbg(&ir->usbdev->dev, "request_packet_async called (size=%#x, standard)\n", size);
+ break;
+ }
+
+ async_urb->transfer_buffer_length = size;
+ async_urb->dev = ir->usbdev;
+
+ res = usb_submit_urb(async_urb, GFP_ATOMIC);
+ if (res)
+ dev_dbg(&ir->usbdev->dev, "request_packet_async (res=%d)\n", res);
+ return res;
+}
+
+static void usb_remote_recv(struct urb *urb, struct pt_regs *regs)
+{
+ struct irctl *ir;
+ int buf_len;
+ int i, delta, bit;
+
+ if (!urb)
+ return;
+
+ ir = urb->context;
+ if (!ir) {
+ usb_unlink_urb(urb);
+ return;
+ }
+ buf_len = urb->actual_length;
+
+ usb_remote_printdata(ir, urb->transfer_buffer, buf_len);
+
+ if (ir->send_flags == RECV_FLAG_IN_PROGRESS) {
+ ir->send_flags = SEND_FLAG_COMPLETE;
+ dev_dbg(&ir->usbdev->dev, "setup answer received %d bytes\n", buf_len);
+ }
+ switch (urb->status) {
+ /* success */
+ case 0:
+ for (i = 0; i < buf_len;) {
+ if (ir->last.partial == 0) {
+ /* decode mce packets of the form (84),AA,BB,CC,DD */
+ /* IR data packets can span USB messages - partial */
+ ir->last.partial = (ir->buf_in[i] & MCE_PACKET_LENGTH_MASK);
+ ir->last.command = ir->buf_in[i] & ~MCE_PACKET_LENGTH_MASK;
+ i++;
+ }
+ for (; (ir->last.partial > 0) && (i < buf_len); i++) {
+ ir->last.partial--;
+
+ if (ir->last.command == 0x80) {
+ bit = ((ir->buf_in[i] & MCE_PULSE_BIT) != 0);
+ delta = (ir->buf_in[i] & MCE_PULSE_MASK) * MCE_TIME_UNIT;
+
+ if ((ir->buf_in[i] & MCE_PULSE_MASK) == 0x7f) {
+ if (ir->last.bit == bit)
+ ir->last.delta += delta;
+ else {
+ ir->last.delta = delta;
+ ir->last.bit = bit;
+ }
+ continue;
+ }
+ delta += ir->last.delta;
+ ir->last.delta = 0;
+ ir->last.bit = bit;
+
+ dev_dbg(&ir->usbdev->dev, "bit %d delta %d\n", bit, delta);
+ input_ir_decode(ir->input, delta, bit);
+ }
+ }
+ }
+ break;
+
+ /* unlink */
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ usb_unlink_urb(urb);
+ return;
+
+ case -EPIPE:
+ default:
+ break;
+ }
+
+ /* resubmit urb */
+ usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+
+/* Sets the send carrier frequency */
+static int set_carrier(struct irctl *ir, int carrier)
+{
+ int clk = 10000000;
+ int prescaler = 0, divisor = 0;
+ unsigned char cmdbuf[] = { 0x9F, 0x06, 0x01, 0x80 };
+
+ /* Carrier is changed */
+ if (ir->carrier != carrier) {
+
+ if (carrier <= 0) {
+ ir->carrier = carrier;
+ dev_dbg(&ir->usbdev->dev, "SET_CARRIER disabling carrier modulation\n");
+ request_packet_async(ir, ir->usb_ep_out,
+ cmdbuf, sizeof(cmdbuf), PHILUSB_SEND);
+ return carrier;
+ }
+
+ for (prescaler = 0; prescaler < 4; ++prescaler) {
+ divisor = (clk >> (2 * prescaler)) / carrier;
+ if (divisor <= 0xFF) {
+ ir->carrier = carrier;
+ cmdbuf[2] = prescaler;
+ cmdbuf[3] = divisor;
+ dev_dbg(&ir->usbdev->dev, "SET_CARRIER requesting %d Hz\n", carrier);
+
+ /* Transmit the new carrier to the mce
+ device */
+ request_packet_async(ir, ir->usb_ep_out,
+ cmdbuf, sizeof(cmdbuf), PHILUSB_SEND);
+ return carrier;
+ }
+ }
+ return -EINVAL;
+ }
+ return carrier;
+}
+
+static int send(void *private, unsigned int *buffer, unsigned int count,
+ unsigned int frequency, unsigned int xmitters)
+{
+ struct irctl *ir = (struct irctl *)private;
+
+ int i, cmdcount = 0;
+ unsigned char cmdbuf[MCE_CMDBUF_SIZE]; /* MCE command buffer */
+ unsigned long signal_duration = 0; /* Singnal length in us */
+
+ if (!ir && !ir->usb_ep_out)
+ return -EFAULT;
+
+ set_carrier(ir, frequency);
+
+ /* MCE tx init header */
+ cmdbuf[cmdcount++] = MCE_CONTROL_HEADER;
+ cmdbuf[cmdcount++] = 0x08;
+ cmdbuf[cmdcount++] = (ir->flags.transmitter_mask_inverted ? ~xmitters : xmitters) << 1;
+
+ /* Generate mce packet data */
+ for (i = 0; (i < count) && (cmdcount < MCE_CMDBUF_SIZE); i++) {
+ signal_duration += buffer[i];
+ buffer[i] = buffer[i] / MCE_TIME_UNIT;
+
+ do { /* loop to support long pulses/spaces > 127*50us=6.35ms */
+
+ /* Insert mce packet header every 4th entry */
+ if ((cmdcount < MCE_CMDBUF_SIZE) && (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH == 0)
+ cmdbuf[cmdcount++] = MCE_PACKET_HEADER;
+
+ /* Insert mce packet data */
+ if (cmdcount < MCE_CMDBUF_SIZE)
+ cmdbuf[cmdcount++] = (buffer[i] < MCE_PULSE_BIT ? buffer[i] :
+ MCE_MAX_PULSE_LENGTH) | (i & 1 ? 0x00 : MCE_PULSE_BIT);
+ else
+ return -EINVAL;
+ } while ((buffer[i] > MCE_MAX_PULSE_LENGTH) && (buffer[i] -= MCE_MAX_PULSE_LENGTH));
+ }
+
+ /* Fix packet length in last header */
+ cmdbuf[cmdcount - (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH] =
+ 0x80 + (cmdcount - MCE_TX_HEADER_LENGTH) % MCE_CODE_LENGTH - 1;
+
+ /* Check if we have room for the empty packet at the end */
+ if (cmdcount >= MCE_CMDBUF_SIZE)
+ return -EINVAL;
+
+ /* All mce commands end with an empty packet (0x80) */
+ cmdbuf[cmdcount++] = 0x80;
+
+ /* Transmit the command to the mce device */
+ request_packet_async(ir, ir->usb_ep_out, cmdbuf,
+ cmdcount, PHILUSB_SEND);
+
+ return 0;
+}
+
+static int usb_remote_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev(intf);
+ struct usb_host_interface *idesc;
+ struct usb_endpoint_descriptor *ep = NULL;
+ struct usb_endpoint_descriptor *ep_in = NULL;
+ struct usb_endpoint_descriptor *ep_out = NULL;
+ struct usb_host_config *config;
+ struct irctl *ir = NULL;
+ int i, devnum, pipe, maxp, ret, is_pinnacle;
+ char name[128];
+
+ dev_dbg(&dev->dev, "usb probe called\n");
+
+ usb_reset_device(dev);
+
+ config = dev->actconfig;
+
+ idesc = intf->cur_altsetting;
+
+ is_pinnacle = usb_match_id(intf, pinnacle_list) ? 1 : 0;
+
+ /* step through the endpoints to find first bulk in and out endpoint */
+ for (i = 0; i < idesc->desc.bNumEndpoints; ++i) {
+ ep = &idesc->endpoint[i].desc;
+
+ if ((ep_in == NULL)
+ && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_IN)
+ && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK)
+ || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT))) {
+
+ dev_dbg(&dev->dev, "acceptable inbound endpoint found\n");
+ ep_in = ep;
+ ep_in->bmAttributes = USB_ENDPOINT_XFER_INT;
+
+ /*
+ * setting seems to 1 seem to cause issues with
+ * Pinnacle timing out on transfer.
+ */
+ if (is_pinnacle)
+ ep_in->bInterval = ep->bInterval;
+ else
+ ep_in->bInterval = 1;
+ }
+ if ((ep_out == NULL)
+ && ((ep->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == USB_DIR_OUT)
+ && (((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK)
+ || ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT))) {
+
+ dev_dbg(&dev->dev, "acceptable outbound endpoint found\n");
+ ep_out = ep;
+ ep_out->bmAttributes = USB_ENDPOINT_XFER_INT;
+
+ /*
+ * setting seems to 1 seem to cause issues with
+ * Pinnacle timing out on transfer.
+ */
+ if (is_pinnacle)
+ ep_out->bInterval = ep->bInterval;
+ else
+ ep_out->bInterval = 1;
+ }
+ }
+ if (ep_in == NULL) {
+ dev_dbg(&dev->dev, "inbound and/or endpoint not found\n");
+ return -ENODEV;
+ }
+ devnum = dev->devnum;
+ pipe = usb_rcvintpipe(dev, ep_in->bEndpointAddress);
+ maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
+
+ /* allocate kernel memory */
+ ir = kzalloc(sizeof(struct irctl), GFP_KERNEL);
+ if (!ir)
+ return -ENOMEM;
+
+ ir->buf_in = usb_buffer_alloc(dev, maxp, GFP_ATOMIC, &ir->dma_in);
+ if (!ir->buf_in) {
+ ret = -ENOMEM;
+ goto free_mem;
+ }
+ ir->urb_in = usb_alloc_urb(0, GFP_KERNEL);
+ if (!ir->urb_in) {
+ ret = -ENOMEM;
+ goto free_buffer;
+ }
+
+ ir->usbdev = dev;
+ ir->len_in = maxp;
+ ir->flags.connected = 0;
+ ir->flags.pinnacle = is_pinnacle;
+ ir->flags.transmitter_mask_inverted =
+ usb_match_id(intf, xmit_inverted) ? 0 : 1;
+
+ /* Saving usb interface data for use by the transmitter routine */
+ ir->usb_ep_in = ep_in;
+ ir->usb_ep_out = ep_out;
+
+ name[0] = '\0';
+ if (dev->descriptor.iManufacturer)
+ usb_string(dev, dev->descriptor.iManufacturer, name, sizeof(name));
+ i = strlen(name);
+ name[i++] = ' ';
+ if (dev->descriptor.iProduct)
+ usb_string(dev, dev->descriptor.iProduct, &name[i], sizeof(name) - i);
+ dev_info(&dev->dev, "%s\n", name);
+
+ /* inbound data */
+ usb_fill_int_urb(ir->urb_in, dev, pipe, ir->buf_in,
+ maxp, (usb_complete_t) usb_remote_recv, ir, ep_in->bInterval);
+
+ /* initialize device */
+ if (ir->flags.pinnacle) {
+ int usbret;
+
+ /*
+ * I have no idea why but this reset seems to be crucial to
+ * getting the device to do outbound IO correctly - without
+ * this the device seems to hang, ignoring all input - although
+ * IR signals are correctly sent from the device, no input is
+ * interpreted by the device and the host never does the
+ * completion routine
+ */
+
+ usbret = usb_reset_configuration(dev);
+ dev_info(&dev->dev, "usb reset config ret %x\n", usbret);
+
+ /*
+ * its possible we really should wait for a return
+ * for each of these...
+ */
+ request_packet_async(ir, ep_in, NULL, maxp, PHILUSB_RECEIVE);
+ request_packet_async(ir, ep_out, pin_init1, sizeof(pin_init1), PHILUSB_SEND);
+ request_packet_async(ir, ep_in, NULL, maxp, PHILUSB_RECEIVE);
+ request_packet_async(ir, ep_out, pin_init2, sizeof(pin_init2), PHILUSB_SEND);
+ request_packet_async(ir, ep_in, NULL, maxp, PHILUSB_RECEIVE);
+ request_packet_async(ir, ep_out, pin_init3, sizeof(pin_init3), PHILUSB_SEND);
+ /* if we dont issue the correct number of receives
+ * (PHILUSB_RECEIVE) for each outbound, then the first few ir
+ * pulses will be interpreted by the usb_async_callback routine
+ * - we should ensure we have the right amount OR less - as the
+ * usb_remote_recv routine will handle the control packets OK -
+ * they start with 0x9f - but the async callback doesnt handle
+ * ir pulse packets
+ */
+ request_packet_async(ir, ep_in, NULL, maxp, 0);
+ } else {
+ request_packet_async(ir, ep_in, NULL, maxp, PHILUSB_RECEIVE);
+ request_packet_async(ir, ep_out, init1, sizeof(init1), PHILUSB_SEND);
+ request_packet_async(ir, ep_in, NULL, maxp, PHILUSB_RECEIVE);
+ request_packet_async(ir, ep_out, init2, sizeof(init2), PHILUSB_SEND);
+ request_packet_async(ir, ep_in, NULL, maxp, 0);
+ }
+ usb_set_intfdata(intf, ir);
+
+ ir->input = input_allocate_device();
+ if (!ir->input) {
+ ret = -ENOMEM;
+ goto free_urb;
+ }
+ ret = input_ir_create(ir->input, ir, send);
+ if (ret)
+ goto free_input;
+
+ ir->input->name = " Microsoft MCE2 IR Transceiver";
+ ret = input_register_device(ir->input);
+ if (ret)
+ goto free_input;
+
+ return 0;
+
+free_input:
+ input_ir_destroy(ir->input);
+ input_free_device(ir->input);
+free_urb:
+ usb_free_urb(ir->urb_in);
+free_buffer:
+ usb_buffer_free(dev, maxp, ir->buf_in, ir->dma_in);
+free_mem:
+ kfree(ir);
+ dev_err(&dev->dev, "failed to load (code=%d)\n", ret);
+ return ret;
+}
+
+
+static void usb_remote_disconnect(struct usb_interface *intf)
+{
+ struct usb_device *dev = interface_to_usbdev(intf);
+ struct irctl *ir = usb_get_intfdata(intf);
+
+ usb_set_intfdata(intf, NULL);
+
+ if (!ir)
+ return;
+
+ ir->usbdev = NULL;
+
+ usb_kill_urb(ir->urb_in);
+ usb_free_urb(ir->urb_in);
+ usb_buffer_free(dev, ir->len_in, ir->buf_in, ir->dma_in);
+}
+
+static int usb_remote_suspend(struct usb_interface *intf, pm_message_t message)
+{
+ struct irctl *ir = usb_get_intfdata(intf);
+ dev_dbg(&ir->usbdev->dev, "suspend\n");
+ usb_kill_urb(ir->urb_in);
+ return 0;
+}
+
+static int usb_remote_resume(struct usb_interface *intf)
+{
+ struct irctl *ir = usb_get_intfdata(intf);
+ dev_dbg(&ir->usbdev->dev, "resume\n");
+ if (usb_submit_urb(ir->urb_in, GFP_ATOMIC))
+ return -EIO;
+ return 0;
+}
+
+static struct usb_driver usb_remote_driver = {
+ .name = DRIVER_NAME,
+ .probe = usb_remote_probe,
+ .disconnect = usb_remote_disconnect,
+ .suspend = usb_remote_suspend,
+ .resume = usb_remote_resume,
+ .id_table = usb_remote_table
+};
+
+static int __init usb_remote_init(void)
+{
+ int ret;
+
+ ret = usb_register(&usb_remote_driver);
+ if (ret < 0) {
+ printk(DRIVER_NAME ": usb register failed, result = %d\n", ret);
+ return ret;
+ }
+ return 0;
+}
+
+static void __exit usb_remote_exit(void)
+{
+ usb_deregister(&usb_remote_driver);
+}
+
+module_init(usb_remote_init);
+module_exit(usb_remote_exit);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(usb, usb_remote_table);
^ permalink raw reply related [flat|nested] 11+ messages in thread* Re: [RFC PATCH 0/4] Implementation of IR support using the input subsystem
2008-09-29 16:17 [RFC PATCH 0/4] Implementation of IR support using the input subsystem Jon Smirl
` (3 preceding siblings ...)
2008-09-29 16:17 ` [RFC PATCH 4/4] Microsoft mceusb2 driver for in-kernel IR subsystem Jon Smirl
@ 2008-09-29 20:14 ` Maxim Levitsky
2008-09-29 20:52 ` Jon Smirl
4 siblings, 1 reply; 11+ messages in thread
From: Maxim Levitsky @ 2008-09-29 20:14 UTC (permalink / raw)
To: Jon Smirl; +Cc: linux-kernel, lirc-list, lirc
Jon Smirl wrote:
> Second pass at implementing evdev support for IR. The goal of in-kernel IR is to integrate IR events into the evdev input event queue and maintain ordering of events from all input devices.
>
> Note that user space IR device drivers can use the existing support in evdev to inject events into the input queue.
>
> Send and receive are implemented. Received IR messages are decoded and sent to user space as input messages. Send is done via an IOCTL on the input device.
>
> Two drivers are supplied. mceusb2 implements send and receive support for the Microsoft USB IR dongle.
>
> The GPT driver implements receive only support for a GPT pin - GPT is a GPIO with a timer attached.
>
> Encoders and decoders have not been written for all protocols. Repeat is not handled for any protocol.
> I'm looking for help. There are 15 more existing LIRC drivers.
Hi,
One thing worries me, there are bazillion of different IR protocols,
but in-kernel decode support will mean that only handful of known protocols will work.
Suppose I take an old remote which has some unknown protocol.
I want to be able to teach the system to listen to it.
But how this can be done if protocols are hard coded?
I think that it would be much better to pass raw ir codes to userspace, and
make it deal with bazillion protocols, and you can always make it auto learn too, and save
results in configuration file.
My .02 cents.
Best regards,
Maxim Levitsky
^ permalink raw reply [flat|nested] 11+ messages in thread* Re: [RFC PATCH 0/4] Implementation of IR support using the input subsystem
2008-09-29 20:14 ` [RFC PATCH 0/4] Implementation of IR support using the input subsystem Maxim Levitsky
@ 2008-09-29 20:52 ` Jon Smirl
0 siblings, 0 replies; 11+ messages in thread
From: Jon Smirl @ 2008-09-29 20:52 UTC (permalink / raw)
To: Maxim Levitsky; +Cc: linux-kernel, lirc-list, lirc
On Mon, Sep 29, 2008 at 4:14 PM, Maxim Levitsky <maximlevitsky@gmail.com> wrote:
> Jon Smirl wrote:
>>
>> Second pass at implementing evdev support for IR. The goal of in-kernel IR
>> is to integrate IR events into the evdev input event queue and maintain
>> ordering of events from all input devices.
>>
>> Note that user space IR device drivers can use the existing support in
>> evdev to inject events into the input queue.
>>
>> Send and receive are implemented. Received IR messages are decoded and
>> sent to user space as input messages. Send is done via an IOCTL on the input
>> device.
>>
>> Two drivers are supplied. mceusb2 implements send and receive support for
>> the Microsoft USB IR dongle.
>> The GPT driver implements receive only support for a GPT pin - GPT is a
>> GPIO with a timer attached.
>>
>> Encoders and decoders have not been written for all protocols. Repeat is
>> not handled for any protocol. I'm looking for help. There are 15 more
>> existing LIRC drivers.
>
>
> Hi,
>
> One thing worries me, there are bazillion of different IR protocols,
> but in-kernel decode support will mean that only handful of known protocols
> will work.
> Suppose I take an old remote which has some unknown protocol.
> I want to be able to teach the system to listen to it.
> But how this can be done if protocols are hard coded?
There's not a bazillion different protocols.
For example thirty different vendors may use the NEC encoding. They
will each use a unique device number and their own commands. While
each of the thirty vendors may assign different device/command codes
they are all still using the NEC encoding. These remotes won't trigger
the other devices because the device fields won't match.
This code only converts raw IR timing of NEC/etc encoding into
device/command. User space has to then figure out how to interpret
device/command.
Christoph has pointed out that their are some more obscure encodings
from RCMM, Grundig, Bang&Olufsen, Goldstar, Serial, Denon, RECS80, and
Motorola that are different than the common ones at
http://www.sbprojects.com.
It takes about 1KB of code to add an encoding. We could make an "extra
encoding" module for these obscure ones.
You can't have an infinite variety of encodings or table based
universal remote controls wouldn't work.
>
> I think that it would be much better to pass raw ir codes to userspace, and
> make it deal with bazillion protocols, and you can always make it auto learn
> too, and save
> results in configuration file.
>
> My .02 cents.
>
> Best regards,
> Maxim Levitsky
>
--
Jon Smirl
jonsmirl@gmail.com
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