mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-27 17:18:59 +00:00
83 lines
2.6 KiB
Diff
83 lines
2.6 KiB
Diff
|
From 0143ee8d373f04e443645072a24ff0c7c87036c6 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Andy Green <andy@openmoko.com>
|
||
|
|
Date: Fri, 25 Jul 2008 23:06:05 +0100
|
||
|
|
Subject: [PATCH] fix-jack-interrupt-debounce-loss-window.patch
|
||
|
|
|
||
|
|
Make sure we can't lose a jack interrupt in debounce, despite it is
|
||
|
|
a one-in-a-million thing that just needs replug to clear
|
||
|
|
|
||
|
|
Signed-off-by: Andy Green <andy@openmoko.com>
|
||
|
|
---
|
||
|
|
drivers/input/keyboard/neo1973kbd.c | 50 +++++++++++++++++++++++-----------
|
||
|
|
1 files changed, 34 insertions(+), 16 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/drivers/input/keyboard/neo1973kbd.c b/drivers/input/keyboard/neo1973kbd.c
|
||
|
|
index a1fc7a3..8b9a420 100644
|
||
|
|
--- a/drivers/input/keyboard/neo1973kbd.c
|
||
|
|
+++ b/drivers/input/keyboard/neo1973kbd.c
|
||
|
|
@@ -62,27 +62,45 @@ static irqreturn_t neo1973kbd_hold_irq(int irq, void *dev_id)
|
||
|
|
static void neo1973kbd_debounce_jack(struct work_struct *work)
|
||
|
|
{
|
||
|
|
struct neo1973kbd *kbd = container_of(work, struct neo1973kbd, work);
|
||
|
|
-
|
||
|
|
- /* we wait out any multiple interrupt stuttering in 100ms lumps */
|
||
|
|
+ unsigned long flags;
|
||
|
|
+ int loop = 0;
|
||
|
|
|
||
|
|
do {
|
||
|
|
- kbd->hp_irq_count_in_work = kbd->hp_irq_count;
|
||
|
|
- msleep(100);
|
||
|
|
- } while (kbd->hp_irq_count != kbd->hp_irq_count_in_work);
|
||
|
|
-
|
||
|
|
- /* no new interrupts on jack for 100ms... ok we will report it */
|
||
|
|
-
|
||
|
|
- input_report_switch(kbd->input,
|
||
|
|
- SW_HEADPHONE_INSERT,
|
||
|
|
- gpio_get_value(irq_to_gpio(kbd->jack_irq)));
|
||
|
|
- input_sync(kbd->input);
|
||
|
|
-
|
||
|
|
- /* next time we get an interrupt on jack we need new work action */
|
||
|
|
- kbd->work_in_progress = 0;
|
||
|
|
+ /*
|
||
|
|
+ * we wait out any multiple interrupt
|
||
|
|
+ * stuttering in 100ms lumps
|
||
|
|
+ */
|
||
|
|
+ do {
|
||
|
|
+ kbd->hp_irq_count_in_work = kbd->hp_irq_count;
|
||
|
|
+ msleep(100);
|
||
|
|
+ } while (kbd->hp_irq_count != kbd->hp_irq_count_in_work);
|
||
|
|
+ /*
|
||
|
|
+ * no new interrupts on jack for 100ms...
|
||
|
|
+ * ok we will report it
|
||
|
|
+ */
|
||
|
|
+ input_report_switch(kbd->input, SW_HEADPHONE_INSERT,
|
||
|
|
+ gpio_get_value(irq_to_gpio(kbd->jack_irq)));
|
||
|
|
+ input_sync(kbd->input);
|
||
|
|
+ /*
|
||
|
|
+ * we go around the outer loop again if we detect that more
|
||
|
|
+ * interrupts came while we are servicing here. But we have
|
||
|
|
+ * to sequence it carefully with interrupts off
|
||
|
|
+ */
|
||
|
|
+ local_save_flags(flags);
|
||
|
|
+ /* no interrupts during this work means we can exit the work */
|
||
|
|
+ loop = !!(kbd->hp_irq_count != kbd->hp_irq_count_in_work);
|
||
|
|
+ if (!loop)
|
||
|
|
+ kbd->work_in_progress = 0;
|
||
|
|
+ local_irq_restore(flags);
|
||
|
|
+ /*
|
||
|
|
+ * interrupt that comes here will either queue a new work action
|
||
|
|
+ * since work_in_progress is cleared now, or be dealt with
|
||
|
|
+ * when we loop.
|
||
|
|
+ */
|
||
|
|
+ } while (loop);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
-
|
||
|
|
static irqreturn_t neo1973kbd_headphone_irq(int irq, void *dev_id)
|
||
|
|
{
|
||
|
|
struct neo1973kbd *neo1973kbd_data = dev_id;
|
||
|
|
--
|
||
|
|
1.5.6.3
|
||
|
|
|