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79 lines
2.6 KiB
79 lines
2.6 KiB
11 years ago
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From f1f13a6b3798161ccc3852320bd2184b85c9209b Mon Sep 17 00:00:00 2001
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From: pjennings <pjennings-git@pjennings.net>
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Date: Wed, 20 Feb 2013 17:51:43 -0600
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Subject: [PATCH 051/174] Added inverted transmitter support
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---
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drivers/staging/media/lirc/lirc_rpi.c | 17 +++++++++++------
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1 file changed, 11 insertions(+), 6 deletions(-)
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--- a/drivers/staging/media/lirc/lirc_rpi.c
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+++ b/drivers/staging/media/lirc/lirc_rpi.c
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@@ -68,6 +68,8 @@ static int debug;
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static int sense = -1;
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/* use softcarrier by default */
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static int softcarrier = 1;
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+/* 0 = do not invert output, 1 = invert output */
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+static int invert = 0;
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struct gpio_chip *gpiochip;
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struct irq_chip *irqchip;
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@@ -135,10 +137,10 @@ static long send_pulse_softcarrier(unsig
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actual = 0; target = 0; flag = 0;
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while (actual < length) {
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if (flag) {
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- gpiochip->set(gpiochip, gpio_out_pin, 0);
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+ gpiochip->set(gpiochip, gpio_out_pin, invert);
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target += space_width;
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} else {
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- gpiochip->set(gpiochip, gpio_out_pin, 1);
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+ gpiochip->set(gpiochip, gpio_out_pin, !invert);
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target += pulse_width;
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}
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d = (target - actual -
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@@ -162,7 +164,7 @@ static long send_pulse(unsigned long len
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if (softcarrier) {
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return send_pulse_softcarrier(length);
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} else {
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- gpiochip->set(gpiochip, gpio_out_pin, 1);
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+ gpiochip->set(gpiochip, gpio_out_pin, !invert);
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safe_udelay(length);
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return 0;
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}
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@@ -170,7 +172,7 @@ static long send_pulse(unsigned long len
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static void send_space(long length)
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{
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- gpiochip->set(gpiochip, gpio_out_pin, 0);
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+ gpiochip->set(gpiochip, gpio_out_pin, invert);
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if (length <= 0)
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return;
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safe_udelay(length);
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@@ -318,7 +320,7 @@ static int init_port(void)
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gpiochip->direction_input(gpiochip, gpio_in_pin);
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gpiochip->direction_output(gpiochip, gpio_out_pin, 1);
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- gpiochip->set(gpiochip, gpio_out_pin, 0);
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+ gpiochip->set(gpiochip, gpio_out_pin, invert);
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irq = gpiochip->to_irq(gpiochip, gpio_in_pin);
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dprintk("to_irq %d\n", irq);
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@@ -457,7 +459,7 @@ static ssize_t lirc_write(struct file *f
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else
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delta = send_pulse(wbuf[i]);
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}
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- gpiochip->set(gpiochip, gpio_out_pin, 0);
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+ gpiochip->set(gpiochip, gpio_out_pin, invert);
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spin_unlock_irqrestore(&lock, flags);
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kfree(wbuf);
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@@ -683,5 +685,8 @@ MODULE_PARM_DESC(sense, "Override autode
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module_param(softcarrier, bool, S_IRUGO);
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MODULE_PARM_DESC(softcarrier, "Software carrier (0 = off, 1 = on, default on)");
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+module_param(invert, bool, S_IRUGO);
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+MODULE_PARM_DESC(invert, "Invert output (0 = off, 1 = on, default off");
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+
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module_param(debug, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug, "Enable debugging messages");
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