This driver was written using lirc since rc-core did not support
transmitter-only hardware at that time. Now that it does, port
this driver.
Compile tested only.
Signed-off-by: Sean Young <s...@mess.org>
Cc: Timo Kokkonen <timo.t.kokko...@iki.fi>
Cc: Ivaylo Dimitrov <ivo.g.dimitrov...@gmail.com>
---
arch/arm/mach-omap2/pdata-quirks.c | 8 +-
drivers/media/rc/Kconfig | 2 +-
drivers/media/rc/ir-rx51.c | 332 ++++++++++------------------
include/linux/platform_data/media/ir-rx51.h | 6 +-
4 files changed, 126 insertions(+), 222 deletions(-)
diff --git a/arch/arm/mach-omap2/pdata-quirks.c
b/arch/arm/mach-omap2/pdata-quirks.c
index 05e20aa..fdd6e7f 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -485,15 +485,15 @@ static struct pwm_omap_dmtimer_pdata pwm_dmtimer_pdata = {
};
#endif
-static struct lirc_rx51_platform_data __maybe_unused rx51_lirc_data = {
+static struct ir_rx51_platform_data __maybe_unused rx51_ir_data = {
.set_max_mpu_wakeup_lat = omap_pm_set_max_mpu_wakeup_lat,
};
-static struct platform_device __maybe_unused rx51_lirc_device = {
- .name = "lirc_rx51",
+static struct platform_device __maybe_unused rx51_ir_device = {
+ .name = "ir_rx51",
.id = -1,
.dev = {
- .platform_data = &rx51_lirc_data,
+ .platform_data = &rx51_ir_data,
},
};
diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig
index 3351e25..d0ddbd3 100644
--- a/drivers/media/rc/Kconfig
+++ b/drivers/media/rc/Kconfig
@@ -345,7 +345,7 @@ config IR_TTUSBIR
config IR_RX51
tristate "Nokia N900 IR transmitter diode"
- depends on OMAP_DM_TIMER && PWM_OMAP_DMTIMER && ARCH_OMAP2PLUS && LIRC
+ depends on (OMAP_DM_TIMER && PWM_OMAP_DMTIMER && ARCH_OMAP2PLUS ||
COMPILE_TEST) && RC_CORE
---help---
Say Y or M here if you want to enable support for the IR
transmitter diode built in the Nokia N900 (RX51) device.
diff --git a/drivers/media/rc/ir-rx51.c b/drivers/media/rc/ir-rx51.c
index 82fb6f2..e897c15 100644
--- a/drivers/media/rc/ir-rx51.c
+++ b/drivers/media/rc/ir-rx51.c
@@ -15,32 +15,23 @@
*/
#include <linux/clk.h>
#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/uaccess.h>
#include <linux/platform_device.h>
-#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/pwm.h>
#include <linux/of.h>
#include <linux/hrtimer.h>
-#include <media/lirc.h>
-#include <media/lirc_dev.h>
+#include <media/rc-core.h>
#include <linux/platform_data/media/ir-rx51.h>
-#define LIRC_RX51_DRIVER_FEATURES (LIRC_CAN_SET_SEND_DUTY_CYCLE | \
- LIRC_CAN_SET_SEND_CARRIER | \
- LIRC_CAN_SEND_PULSE)
-
-#define DRIVER_NAME "lirc_rx51"
-
#define WBUF_LEN 256
-struct lirc_rx51 {
+struct ir_rx51 {
+ struct rc_dev *rcdev;
struct pwm_device *pwm;
struct hrtimer timer;
struct device *dev;
- struct lirc_rx51_platform_data *pdata;
+ struct ir_rx51_platform_data *pdata;
wait_queue_head_t wqueue;
unsigned int freq; /* carrier frequency */
@@ -50,38 +41,37 @@ struct lirc_rx51 {
unsigned long device_is_open;
};
-static inline void lirc_rx51_on(struct lirc_rx51 *lirc_rx51)
+static inline void ir_rx51_on(struct ir_rx51 *ir_rx51)
{
- pwm_enable(lirc_rx51->pwm);
+ pwm_enable(ir_rx51->pwm);
}
-static inline void lirc_rx51_off(struct lirc_rx51 *lirc_rx51)
+static inline void ir_rx51_off(struct ir_rx51 *ir_rx51)
{
- pwm_disable(lirc_rx51->pwm);
+ pwm_disable(ir_rx51->pwm);
}
-static int init_timing_params(struct lirc_rx51 *lirc_rx51)
+static int init_timing_params(struct ir_rx51 *ir_rx51)
{
- struct pwm_device *pwm = lirc_rx51->pwm;
- int duty, period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, lirc_rx51->freq);
+ struct pwm_device *pwm = ir_rx51->pwm;
+ int duty, period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, ir_rx51->freq);
- duty = DIV_ROUND_CLOSEST(lirc_rx51->duty_cycle * period, 100);
+ duty = DIV_ROUND_CLOSEST(ir_rx51->duty_cycle * period, 100);
pwm_config(pwm, duty, period);
return 0;
}
-static enum hrtimer_restart lirc_rx51_timer_cb(struct hrtimer *timer)
+static enum hrtimer_restart ir_rx51_timer_cb(struct hrtimer *timer)
{
- struct lirc_rx51 *lirc_rx51 =
- container_of(timer, struct lirc_rx51, timer);
+ struct ir_rx51 *ir_rx51 = container_of(timer, struct ir_rx51, timer);
ktime_t now;
- if (lirc_rx51->wbuf_index < 0) {
- dev_err_ratelimited(lirc_rx51->dev,
- "BUG wbuf_index has value of %i\n",
- lirc_rx51->wbuf_index);
+ if (ir_rx51->wbuf_index < 0) {
+ dev_err_ratelimited(ir_rx51->dev,
+ "BUG wbuf_index has value of %i\n",
+ ir_rx51->wbuf_index);
goto end;
}
@@ -92,20 +82,20 @@ static enum hrtimer_restart lirc_rx51_timer_cb(struct
hrtimer *timer)
do {
u64 ns;
- if (lirc_rx51->wbuf_index >= WBUF_LEN)
+ if (ir_rx51->wbuf_index >= WBUF_LEN)
goto end;
- if (lirc_rx51->wbuf[lirc_rx51->wbuf_index] == -1)
+ if (ir_rx51->wbuf[ir_rx51->wbuf_index] == -1)
goto end;
- if (lirc_rx51->wbuf_index % 2)
- lirc_rx51_off(lirc_rx51);
+ if (ir_rx51->wbuf_index % 2)
+ ir_rx51_off(ir_rx51);
else
- lirc_rx51_on(lirc_rx51);
+ ir_rx51_on(ir_rx51);
- ns = 1000 * lirc_rx51->wbuf[lirc_rx51->wbuf_index];
+ ns = US_TO_NS(ir_rx51->wbuf[ir_rx51->wbuf_index]);
hrtimer_add_expires_ns(timer, ns);
- lirc_rx51->wbuf_index++;
+ ir_rx51->wbuf_index++;
now = timer->base->get_time();
@@ -114,203 +104,112 @@ static enum hrtimer_restart lirc_rx51_timer_cb(struct
hrtimer *timer)
return HRTIMER_RESTART;
end:
/* Stop TX here */
- lirc_rx51_off(lirc_rx51);
- lirc_rx51->wbuf_index = -1;
+ ir_rx51_off(ir_rx51);
+ ir_rx51->wbuf_index = -1;
- wake_up_interruptible(&lirc_rx51->wqueue);
+ wake_up_interruptible(&ir_rx51->wqueue);
return HRTIMER_NORESTART;
}
-static ssize_t lirc_rx51_write(struct file *file, const char *buf,
- size_t n, loff_t *ppos)
+static int ir_rx51_tx(struct rc_dev *dev, unsigned int *buffer,
+ unsigned int count)
{
- int count, i;
- struct lirc_rx51 *lirc_rx51 = file->private_data;
+ struct ir_rx51 *ir_rx51 = dev->priv;
- if (n % sizeof(int))
+ if (count > WBUF_LEN)
return -EINVAL;
- count = n / sizeof(int);
- if ((count > WBUF_LEN) || (count % 2 == 0))
- return -EINVAL;
+ memcpy(ir_rx51->wbuf, buffer, count * sizeof(unsigned int));
/* Wait any pending transfers to finish */
- wait_event_interruptible(lirc_rx51->wqueue, lirc_rx51->wbuf_index < 0);
-
- if (copy_from_user(lirc_rx51->wbuf, buf, n))
- return -EFAULT;
-
- /* Sanity check the input pulses */
- for (i = 0; i < count; i++)
- if (lirc_rx51->wbuf[i] < 0)
- return -EINVAL;
+ wait_event_interruptible(ir_rx51->wqueue, ir_rx51->wbuf_index < 0);
- init_timing_params(lirc_rx51);
+ init_timing_params(ir_rx51);
if (count < WBUF_LEN)
- lirc_rx51->wbuf[count] = -1; /* Insert termination mark */
+ ir_rx51->wbuf[count] = -1; /* Insert termination mark */
/*
* Adjust latency requirements so the device doesn't go in too
* deep sleep states
*/
- lirc_rx51->pdata->set_max_mpu_wakeup_lat(lirc_rx51->dev, 50);
+ ir_rx51->pdata->set_max_mpu_wakeup_lat(ir_rx51->dev, 50);
- lirc_rx51_on(lirc_rx51);
- lirc_rx51->wbuf_index = 1;
- hrtimer_start(&lirc_rx51->timer,
- ns_to_ktime(1000 * lirc_rx51->wbuf[0]),
+ ir_rx51_on(ir_rx51);
+ ir_rx51->wbuf_index = 1;
+ hrtimer_start(&ir_rx51->timer,
+ ns_to_ktime(US_TO_NS(ir_rx51->wbuf[0])),
HRTIMER_MODE_REL);
/*
* Don't return back to the userspace until the transfer has
* finished
*/
- wait_event_interruptible(lirc_rx51->wqueue, lirc_rx51->wbuf_index < 0);
+ wait_event_interruptible(ir_rx51->wqueue, ir_rx51->wbuf_index < 0);
/* We can sleep again */
- lirc_rx51->pdata->set_max_mpu_wakeup_lat(lirc_rx51->dev, -1);
+ ir_rx51->pdata->set_max_mpu_wakeup_lat(ir_rx51->dev, -1);
- return n;
+ return count;
}
-static long lirc_rx51_ioctl(struct file *filep,
- unsigned int cmd, unsigned long arg)
+static int ir_rx51_open(struct rc_dev *dev)
{
- int result;
- unsigned long value;
- unsigned int ivalue;
- struct lirc_rx51 *lirc_rx51 = filep->private_data;
-
- switch (cmd) {
- case LIRC_GET_SEND_MODE:
- result = put_user(LIRC_MODE_PULSE, (unsigned long *)arg);
- if (result)
- return result;
- break;
-
- case LIRC_SET_SEND_MODE:
- result = get_user(value, (unsigned long *)arg);
- if (result)
- return result;
-
- /* only LIRC_MODE_PULSE supported */
- if (value != LIRC_MODE_PULSE)
- return -ENOSYS;
- break;
-
- case LIRC_GET_REC_MODE:
- result = put_user(0, (unsigned long *) arg);
- if (result)
- return result;
- break;
-
- case LIRC_GET_LENGTH:
- return -ENOSYS;
- break;
-
- case LIRC_SET_SEND_DUTY_CYCLE:
- result = get_user(ivalue, (unsigned int *) arg);
- if (result)
- return result;
-
- if (ivalue <= 0 || ivalue > 100) {
- dev_err(lirc_rx51->dev, ": invalid duty cycle %d\n",
- ivalue);
- return -EINVAL;
- }
-
- lirc_rx51->duty_cycle = ivalue;
- break;
-
- case LIRC_SET_SEND_CARRIER:
- result = get_user(ivalue, (unsigned int *) arg);
- if (result)
- return result;
-
- if (ivalue > 500000 || ivalue < 20000) {
- dev_err(lirc_rx51->dev, ": invalid carrier freq %d\n",
- ivalue);
- return -EINVAL;
- }
-
- lirc_rx51->freq = ivalue;
- break;
-
- case LIRC_GET_FEATURES:
- result = put_user(LIRC_RX51_DRIVER_FEATURES,
- (unsigned long *) arg);
- if (result)
- return result;
- break;
-
- default:
- return -ENOIOCTLCMD;
- }
-
- return 0;
-}
+ struct ir_rx51 *ir_rx51 = dev->priv;
-static int lirc_rx51_open(struct inode *inode, struct file *file)
-{
- struct lirc_rx51 *lirc_rx51 = lirc_get_pdata(file);
- BUG_ON(!lirc_rx51);
-
- file->private_data = lirc_rx51;
-
- if (test_and_set_bit(1, &lirc_rx51->device_is_open))
+ if (test_and_set_bit(1, &ir_rx51->device_is_open))
return -EBUSY;
- lirc_rx51->pwm = pwm_get(lirc_rx51->dev, NULL);
- if (IS_ERR(lirc_rx51->pwm)) {
- int res = PTR_ERR(lirc_rx51->pwm);
+ ir_rx51->pwm = pwm_get(ir_rx51->dev, NULL);
+ if (IS_ERR(ir_rx51->pwm)) {
+ int res = PTR_ERR(ir_rx51->pwm);
- dev_err(lirc_rx51->dev, "pwm_get failed: %d\n", res);
+ dev_err(ir_rx51->dev, "pwm_get failed: %d\n", res);
return res;
}
return 0;
}
-static int lirc_rx51_release(struct inode *inode, struct file *file)
+static void ir_rx51_release(struct rc_dev *dev)
{
- struct lirc_rx51 *lirc_rx51 = file->private_data;
-
- hrtimer_cancel(&lirc_rx51->timer);
- lirc_rx51_off(lirc_rx51);
- pwm_put(lirc_rx51->pwm);
+ struct ir_rx51 *ir_rx51 = dev->priv;
- clear_bit(1, &lirc_rx51->device_is_open);
+ hrtimer_cancel(&ir_rx51->timer);
+ ir_rx51_off(ir_rx51);
+ pwm_put(ir_rx51->pwm);
- return 0;
+ clear_bit(1, &ir_rx51->device_is_open);
}
-static struct lirc_rx51 lirc_rx51 = {
+static struct ir_rx51 ir_rx51 = {
.duty_cycle = 50,
.wbuf_index = -1,
};
-static const struct file_operations lirc_fops = {
- .owner = THIS_MODULE,
- .write = lirc_rx51_write,
- .unlocked_ioctl = lirc_rx51_ioctl,
- .read = lirc_dev_fop_read,
- .poll = lirc_dev_fop_poll,
- .open = lirc_rx51_open,
- .release = lirc_rx51_release,
-};
+static int ir_rx51_set_duty_cycle(struct rc_dev *dev, u32 duty)
+{
+ struct ir_rx51 *ir_rx51 = dev->priv;
-static struct lirc_driver lirc_rx51_driver = {
- .name = DRIVER_NAME,
- .minor = -1,
- .code_length = 1,
- .data = &lirc_rx51,
- .fops = &lirc_fops,
- .owner = THIS_MODULE,
-};
+ ir_rx51->duty_cycle = duty;
+
+ return 0;
+}
+
+static int ir_rx51_set_tx_carrier(struct rc_dev *dev, u32 carrier)
+{
+ struct ir_rx51 *ir_rx51 = dev->priv;
+
+ if (carrier > 500000 || carrier < 20000)
+ return -EINVAL;
+
+ ir_rx51->freq = carrier;
+
+ return 0;
+}
#ifdef CONFIG_PM
-static int lirc_rx51_suspend(struct platform_device *dev, pm_message_t state)
+static int ir_rx51_suspend(struct platform_device *dev, pm_message_t state)
{
/*
* In case the device is still open, do not suspend. Normally
@@ -320,34 +219,34 @@ static int lirc_rx51_suspend(struct platform_device *dev,
pm_message_t state)
* were in a middle of a transmit. Thus, we defer any suspend
* actions until transmit has completed.
*/
- if (test_and_set_bit(1, &lirc_rx51.device_is_open))
+ if (test_and_set_bit(1, &ir_rx51.device_is_open))
return -EAGAIN;
- clear_bit(1, &lirc_rx51.device_is_open);
+ clear_bit(1, &ir_rx51.device_is_open);
return 0;
}
-static int lirc_rx51_resume(struct platform_device *dev)
+static int ir_rx51_resume(struct platform_device *dev)
{
return 0;
}
#else
-#define lirc_rx51_suspend NULL
-#define lirc_rx51_resume NULL
+#define ir_rx51_suspend NULL
+#define ir_rx51_resume NULL
#endif /* CONFIG_PM */
-static int lirc_rx51_probe(struct platform_device *dev)
+static int ir_rx51_probe(struct platform_device *dev)
{
struct pwm_device *pwm;
+ struct rc_dev *rcdev;
- lirc_rx51_driver.features = LIRC_RX51_DRIVER_FEATURES;
- lirc_rx51.pdata = dev->dev.platform_data;
+ ir_rx51.pdata = dev->dev.platform_data;
- if (!lirc_rx51.pdata) {
+ if (!ir_rx51.pdata) {
dev_err(&dev->dev, "Platform Data is missing\n");
return -ENXIO;
}
@@ -362,51 +261,56 @@ static int lirc_rx51_probe(struct platform_device *dev)
}
/* Use default, in case userspace does not set the carrier */
- lirc_rx51.freq = DIV_ROUND_CLOSEST(pwm_get_period(pwm), NSEC_PER_SEC);
+ ir_rx51.freq = DIV_ROUND_CLOSEST(pwm_get_period(pwm), NSEC_PER_SEC);
pwm_put(pwm);
- hrtimer_init(&lirc_rx51.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
- lirc_rx51.timer.function = lirc_rx51_timer_cb;
+ hrtimer_init(&ir_rx51.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ ir_rx51.timer.function = ir_rx51_timer_cb;
- lirc_rx51.dev = &dev->dev;
- lirc_rx51_driver.dev = &dev->dev;
- lirc_rx51_driver.minor = lirc_register_driver(&lirc_rx51_driver);
- init_waitqueue_head(&lirc_rx51.wqueue);
+ ir_rx51.dev = &dev->dev;
- if (lirc_rx51_driver.minor < 0) {
- dev_err(lirc_rx51.dev, ": lirc_register_driver failed: %d\n",
- lirc_rx51_driver.minor);
- return lirc_rx51_driver.minor;
- }
+ rcdev = devm_rc_allocate_device(&dev->dev, RC_DRIVER_IR_RAW_TX);
+ if (!rcdev)
+ return -ENOMEM;
- return 0;
+ rcdev->priv = &ir_rx51;
+ rcdev->open = ir_rx51_open;
+ rcdev->close = ir_rx51_release;
+ rcdev->tx_ir = ir_rx51_tx;
+ rcdev->s_tx_duty_cycle = ir_rx51_set_duty_cycle;
+ rcdev->s_tx_carrier = ir_rx51_set_tx_carrier;
+ rcdev->driver_name = KBUILD_MODNAME;
+
+ ir_rx51.rcdev = rcdev;
+
+ return devm_rc_register_device(&dev->dev, ir_rx51.rcdev);
}
-static int lirc_rx51_remove(struct platform_device *dev)
+static int ir_rx51_remove(struct platform_device *dev)
{
- return lirc_unregister_driver(lirc_rx51_driver.minor);
+ return 0;
}
-static const struct of_device_id lirc_rx51_match[] = {
+static const struct of_device_id ir_rx51_match[] = {
{
.compatible = "nokia,n900-ir",
},
{},
};
-MODULE_DEVICE_TABLE(of, lirc_rx51_match);
+MODULE_DEVICE_TABLE(of, ir_rx51_match);
-struct platform_driver lirc_rx51_platform_driver = {
- .probe = lirc_rx51_probe,
- .remove = lirc_rx51_remove,
- .suspend = lirc_rx51_suspend,
- .resume = lirc_rx51_resume,
+static struct platform_driver ir_rx51_platform_driver = {
+ .probe = ir_rx51_probe,
+ .remove = ir_rx51_remove,
+ .suspend = ir_rx51_suspend,
+ .resume = ir_rx51_resume,
.driver = {
- .name = DRIVER_NAME,
- .of_match_table = of_match_ptr(lirc_rx51_match),
+ .name = KBUILD_MODNAME,
+ .of_match_table = of_match_ptr(ir_rx51_match),
},
};
-module_platform_driver(lirc_rx51_platform_driver);
+module_platform_driver(ir_rx51_platform_driver);
-MODULE_DESCRIPTION("LIRC TX driver for Nokia RX51");
+MODULE_DESCRIPTION("IR TX driver for Nokia RX51");
MODULE_AUTHOR("Nokia Corporation");
MODULE_LICENSE("GPL");
diff --git a/include/linux/platform_data/media/ir-rx51.h
b/include/linux/platform_data/media/ir-rx51.h
index 812d873..2c94ab5 100644
--- a/include/linux/platform_data/media/ir-rx51.h
+++ b/include/linux/platform_data/media/ir-rx51.h
@@ -1,7 +1,7 @@
-#ifndef _LIRC_RX51_H
-#define _LIRC_RX51_H
+#ifndef _IR_RX51_H
+#define _IR_RX51_H
-struct lirc_rx51_platform_data {
+struct ir_rx51_platform_data {
int(*set_max_mpu_wakeup_lat)(struct device *dev, long t);
};
--
2.9.3
--
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