mirror of https://gitee.com/openkylin/linux.git
[media] ir-rx51: port to rc-core
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 <sean@mess.org> Cc: Timo Kokkonen <timo.t.kokkonen@iki.fi> Cc: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Sean Young
Mauro Carvalho Chehab
parent
fe052da492
commit
a92def1bec
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@ -484,15 +484,15 @@ static struct pwm_omap_dmtimer_pdata pwm_dmtimer_pdata = {
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};
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#endif
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static struct lirc_rx51_platform_data __maybe_unused rx51_lirc_data = {
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static struct ir_rx51_platform_data __maybe_unused rx51_ir_data = {
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.set_max_mpu_wakeup_lat = omap_pm_set_max_mpu_wakeup_lat,
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};
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static struct platform_device __maybe_unused rx51_lirc_device = {
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.name = "lirc_rx51",
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static struct platform_device __maybe_unused rx51_ir_device = {
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.name = "ir_rx51",
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.id = -1,
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.dev = {
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.platform_data = &rx51_lirc_data,
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.platform_data = &rx51_ir_data,
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},
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};
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@ -345,7 +345,7 @@ config IR_TTUSBIR
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config IR_RX51
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tristate "Nokia N900 IR transmitter diode"
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depends on OMAP_DM_TIMER && PWM_OMAP_DMTIMER && ARCH_OMAP2PLUS && LIRC
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depends on (OMAP_DM_TIMER && PWM_OMAP_DMTIMER && ARCH_OMAP2PLUS || COMPILE_TEST) && RC_CORE
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---help---
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Say Y or M here if you want to enable support for the IR
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transmitter diode built in the Nokia N900 (RX51) device.
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@ -15,32 +15,23 @@
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*/
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#include <linux/clk.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/uaccess.h>
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#include <linux/platform_device.h>
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#include <linux/sched.h>
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#include <linux/wait.h>
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#include <linux/pwm.h>
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#include <linux/of.h>
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#include <linux/hrtimer.h>
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#include <media/lirc.h>
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#include <media/lirc_dev.h>
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#include <media/rc-core.h>
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#include <linux/platform_data/media/ir-rx51.h>
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#define LIRC_RX51_DRIVER_FEATURES (LIRC_CAN_SET_SEND_DUTY_CYCLE | \
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LIRC_CAN_SET_SEND_CARRIER | \
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LIRC_CAN_SEND_PULSE)
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#define DRIVER_NAME "lirc_rx51"
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#define WBUF_LEN 256
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struct lirc_rx51 {
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struct ir_rx51 {
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struct rc_dev *rcdev;
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struct pwm_device *pwm;
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struct hrtimer timer;
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struct device *dev;
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struct lirc_rx51_platform_data *pdata;
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struct ir_rx51_platform_data *pdata;
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wait_queue_head_t wqueue;
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unsigned int freq; /* carrier frequency */
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@ -50,38 +41,37 @@ struct lirc_rx51 {
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unsigned long device_is_open;
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};
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static inline void lirc_rx51_on(struct lirc_rx51 *lirc_rx51)
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static inline void ir_rx51_on(struct ir_rx51 *ir_rx51)
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{
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pwm_enable(lirc_rx51->pwm);
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pwm_enable(ir_rx51->pwm);
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}
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static inline void lirc_rx51_off(struct lirc_rx51 *lirc_rx51)
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static inline void ir_rx51_off(struct ir_rx51 *ir_rx51)
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{
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pwm_disable(lirc_rx51->pwm);
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pwm_disable(ir_rx51->pwm);
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}
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static int init_timing_params(struct lirc_rx51 *lirc_rx51)
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static int init_timing_params(struct ir_rx51 *ir_rx51)
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{
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struct pwm_device *pwm = lirc_rx51->pwm;
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int duty, period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, lirc_rx51->freq);
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struct pwm_device *pwm = ir_rx51->pwm;
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int duty, period = DIV_ROUND_CLOSEST(NSEC_PER_SEC, ir_rx51->freq);
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duty = DIV_ROUND_CLOSEST(lirc_rx51->duty_cycle * period, 100);
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duty = DIV_ROUND_CLOSEST(ir_rx51->duty_cycle * period, 100);
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pwm_config(pwm, duty, period);
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return 0;
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}
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static enum hrtimer_restart lirc_rx51_timer_cb(struct hrtimer *timer)
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static enum hrtimer_restart ir_rx51_timer_cb(struct hrtimer *timer)
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{
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struct lirc_rx51 *lirc_rx51 =
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container_of(timer, struct lirc_rx51, timer);
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struct ir_rx51 *ir_rx51 = container_of(timer, struct ir_rx51, timer);
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ktime_t now;
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if (lirc_rx51->wbuf_index < 0) {
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dev_err_ratelimited(lirc_rx51->dev,
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"BUG wbuf_index has value of %i\n",
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lirc_rx51->wbuf_index);
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if (ir_rx51->wbuf_index < 0) {
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dev_err_ratelimited(ir_rx51->dev,
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"BUG wbuf_index has value of %i\n",
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ir_rx51->wbuf_index);
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goto end;
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}
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@ -92,20 +82,20 @@ static enum hrtimer_restart lirc_rx51_timer_cb(struct hrtimer *timer)
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do {
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u64 ns;
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if (lirc_rx51->wbuf_index >= WBUF_LEN)
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if (ir_rx51->wbuf_index >= WBUF_LEN)
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goto end;
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if (lirc_rx51->wbuf[lirc_rx51->wbuf_index] == -1)
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if (ir_rx51->wbuf[ir_rx51->wbuf_index] == -1)
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goto end;
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if (lirc_rx51->wbuf_index % 2)
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lirc_rx51_off(lirc_rx51);
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if (ir_rx51->wbuf_index % 2)
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ir_rx51_off(ir_rx51);
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else
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lirc_rx51_on(lirc_rx51);
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ir_rx51_on(ir_rx51);
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ns = 1000 * lirc_rx51->wbuf[lirc_rx51->wbuf_index];
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ns = US_TO_NS(ir_rx51->wbuf[ir_rx51->wbuf_index]);
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hrtimer_add_expires_ns(timer, ns);
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lirc_rx51->wbuf_index++;
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ir_rx51->wbuf_index++;
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now = timer->base->get_time();
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@ -114,203 +104,112 @@ static enum hrtimer_restart lirc_rx51_timer_cb(struct hrtimer *timer)
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return HRTIMER_RESTART;
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end:
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/* Stop TX here */
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lirc_rx51_off(lirc_rx51);
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lirc_rx51->wbuf_index = -1;
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ir_rx51_off(ir_rx51);
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ir_rx51->wbuf_index = -1;
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wake_up_interruptible(&lirc_rx51->wqueue);
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wake_up_interruptible(&ir_rx51->wqueue);
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return HRTIMER_NORESTART;
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}
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static ssize_t lirc_rx51_write(struct file *file, const char *buf,
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size_t n, loff_t *ppos)
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static int ir_rx51_tx(struct rc_dev *dev, unsigned int *buffer,
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unsigned int count)
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{
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int count, i;
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struct lirc_rx51 *lirc_rx51 = file->private_data;
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struct ir_rx51 *ir_rx51 = dev->priv;
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if (n % sizeof(int))
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if (count > WBUF_LEN)
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return -EINVAL;
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count = n / sizeof(int);
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if ((count > WBUF_LEN) || (count % 2 == 0))
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return -EINVAL;
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memcpy(ir_rx51->wbuf, buffer, count * sizeof(unsigned int));
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/* Wait any pending transfers to finish */
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wait_event_interruptible(lirc_rx51->wqueue, lirc_rx51->wbuf_index < 0);
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wait_event_interruptible(ir_rx51->wqueue, ir_rx51->wbuf_index < 0);
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if (copy_from_user(lirc_rx51->wbuf, buf, n))
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return -EFAULT;
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/* Sanity check the input pulses */
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for (i = 0; i < count; i++)
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if (lirc_rx51->wbuf[i] < 0)
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return -EINVAL;
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init_timing_params(lirc_rx51);
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init_timing_params(ir_rx51);
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if (count < WBUF_LEN)
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lirc_rx51->wbuf[count] = -1; /* Insert termination mark */
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ir_rx51->wbuf[count] = -1; /* Insert termination mark */
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/*
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* Adjust latency requirements so the device doesn't go in too
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* deep sleep states
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*/
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lirc_rx51->pdata->set_max_mpu_wakeup_lat(lirc_rx51->dev, 50);
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ir_rx51->pdata->set_max_mpu_wakeup_lat(ir_rx51->dev, 50);
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lirc_rx51_on(lirc_rx51);
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lirc_rx51->wbuf_index = 1;
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hrtimer_start(&lirc_rx51->timer,
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ns_to_ktime(1000 * lirc_rx51->wbuf[0]),
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ir_rx51_on(ir_rx51);
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ir_rx51->wbuf_index = 1;
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hrtimer_start(&ir_rx51->timer,
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ns_to_ktime(US_TO_NS(ir_rx51->wbuf[0])),
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HRTIMER_MODE_REL);
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/*
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* Don't return back to the userspace until the transfer has
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* finished
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*/
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wait_event_interruptible(lirc_rx51->wqueue, lirc_rx51->wbuf_index < 0);
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wait_event_interruptible(ir_rx51->wqueue, ir_rx51->wbuf_index < 0);
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/* We can sleep again */
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lirc_rx51->pdata->set_max_mpu_wakeup_lat(lirc_rx51->dev, -1);
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ir_rx51->pdata->set_max_mpu_wakeup_lat(ir_rx51->dev, -1);
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return n;
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return count;
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}
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static long lirc_rx51_ioctl(struct file *filep,
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unsigned int cmd, unsigned long arg)
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static int ir_rx51_open(struct rc_dev *dev)
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{
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int result;
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unsigned long value;
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unsigned int ivalue;
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struct lirc_rx51 *lirc_rx51 = filep->private_data;
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struct ir_rx51 *ir_rx51 = dev->priv;
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switch (cmd) {
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case LIRC_GET_SEND_MODE:
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result = put_user(LIRC_MODE_PULSE, (unsigned long *)arg);
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if (result)
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return result;
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break;
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case LIRC_SET_SEND_MODE:
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result = get_user(value, (unsigned long *)arg);
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if (result)
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return result;
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/* only LIRC_MODE_PULSE supported */
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if (value != LIRC_MODE_PULSE)
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return -ENOSYS;
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break;
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case LIRC_GET_REC_MODE:
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result = put_user(0, (unsigned long *) arg);
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if (result)
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return result;
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break;
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case LIRC_GET_LENGTH:
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return -ENOSYS;
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break;
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case LIRC_SET_SEND_DUTY_CYCLE:
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result = get_user(ivalue, (unsigned int *) arg);
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if (result)
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return result;
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if (ivalue <= 0 || ivalue > 100) {
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dev_err(lirc_rx51->dev, ": invalid duty cycle %d\n",
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ivalue);
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return -EINVAL;
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}
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lirc_rx51->duty_cycle = ivalue;
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break;
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case LIRC_SET_SEND_CARRIER:
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result = get_user(ivalue, (unsigned int *) arg);
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if (result)
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return result;
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if (ivalue > 500000 || ivalue < 20000) {
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dev_err(lirc_rx51->dev, ": invalid carrier freq %d\n",
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ivalue);
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return -EINVAL;
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}
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lirc_rx51->freq = ivalue;
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break;
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case LIRC_GET_FEATURES:
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result = put_user(LIRC_RX51_DRIVER_FEATURES,
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(unsigned long *) arg);
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if (result)
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return result;
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break;
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default:
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return -ENOIOCTLCMD;
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}
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return 0;
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}
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static int lirc_rx51_open(struct inode *inode, struct file *file)
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{
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struct lirc_rx51 *lirc_rx51 = lirc_get_pdata(file);
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BUG_ON(!lirc_rx51);
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file->private_data = lirc_rx51;
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if (test_and_set_bit(1, &lirc_rx51->device_is_open))
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if (test_and_set_bit(1, &ir_rx51->device_is_open))
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return -EBUSY;
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lirc_rx51->pwm = pwm_get(lirc_rx51->dev, NULL);
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if (IS_ERR(lirc_rx51->pwm)) {
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int res = PTR_ERR(lirc_rx51->pwm);
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ir_rx51->pwm = pwm_get(ir_rx51->dev, NULL);
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if (IS_ERR(ir_rx51->pwm)) {
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int res = PTR_ERR(ir_rx51->pwm);
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dev_err(lirc_rx51->dev, "pwm_get failed: %d\n", res);
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dev_err(ir_rx51->dev, "pwm_get failed: %d\n", res);
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return res;
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}
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return 0;
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}
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static int lirc_rx51_release(struct inode *inode, struct file *file)
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static void ir_rx51_release(struct rc_dev *dev)
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{
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struct lirc_rx51 *lirc_rx51 = file->private_data;
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struct ir_rx51 *ir_rx51 = dev->priv;
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hrtimer_cancel(&lirc_rx51->timer);
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lirc_rx51_off(lirc_rx51);
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pwm_put(lirc_rx51->pwm);
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hrtimer_cancel(&ir_rx51->timer);
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ir_rx51_off(ir_rx51);
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pwm_put(ir_rx51->pwm);
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clear_bit(1, &lirc_rx51->device_is_open);
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return 0;
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clear_bit(1, &ir_rx51->device_is_open);
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}
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static struct lirc_rx51 lirc_rx51 = {
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static struct ir_rx51 ir_rx51 = {
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.duty_cycle = 50,
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.wbuf_index = -1,
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};
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static const struct file_operations lirc_fops = {
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.owner = THIS_MODULE,
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.write = lirc_rx51_write,
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.unlocked_ioctl = lirc_rx51_ioctl,
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.read = lirc_dev_fop_read,
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.poll = lirc_dev_fop_poll,
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.open = lirc_rx51_open,
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.release = lirc_rx51_release,
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};
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static int ir_rx51_set_duty_cycle(struct rc_dev *dev, u32 duty)
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{
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struct ir_rx51 *ir_rx51 = dev->priv;
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static struct lirc_driver lirc_rx51_driver = {
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.name = DRIVER_NAME,
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.minor = -1,
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.code_length = 1,
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.data = &lirc_rx51,
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.fops = &lirc_fops,
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.owner = THIS_MODULE,
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};
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ir_rx51->duty_cycle = duty;
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return 0;
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}
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static int ir_rx51_set_tx_carrier(struct rc_dev *dev, u32 carrier)
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{
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struct ir_rx51 *ir_rx51 = dev->priv;
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if (carrier > 500000 || carrier < 20000)
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return -EINVAL;
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ir_rx51->freq = carrier;
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return 0;
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}
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#ifdef CONFIG_PM
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static int lirc_rx51_suspend(struct platform_device *dev, pm_message_t state)
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static int ir_rx51_suspend(struct platform_device *dev, pm_message_t state)
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{
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/*
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* In case the device is still open, do not suspend. Normally
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|
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@ -320,34 +219,34 @@ static int lirc_rx51_suspend(struct platform_device *dev, pm_message_t state)
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* were in a middle of a transmit. Thus, we defer any suspend
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* actions until transmit has completed.
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*/
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if (test_and_set_bit(1, &lirc_rx51.device_is_open))
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if (test_and_set_bit(1, &ir_rx51.device_is_open))
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return -EAGAIN;
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clear_bit(1, &lirc_rx51.device_is_open);
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clear_bit(1, &ir_rx51.device_is_open);
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return 0;
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}
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static int lirc_rx51_resume(struct platform_device *dev)
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static int ir_rx51_resume(struct platform_device *dev)
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{
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return 0;
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}
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#else
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#define lirc_rx51_suspend NULL
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#define lirc_rx51_resume NULL
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#define ir_rx51_suspend NULL
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#define ir_rx51_resume NULL
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#endif /* CONFIG_PM */
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static int lirc_rx51_probe(struct platform_device *dev)
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static int ir_rx51_probe(struct platform_device *dev)
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{
|
||||
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;
|
||||
|
||||
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 ir_rx51_remove(struct platform_device *dev)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int lirc_rx51_remove(struct platform_device *dev)
|
||||
{
|
||||
return lirc_unregister_driver(lirc_rx51_driver.minor);
|
||||
}
|
||||
|
||||
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");
|
||||
|
|
|
|||
|
|
@ -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);
|
||||
};
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue