mirror of https://github.com/hak5/openwrt.git
139 lines
4.8 KiB
Diff
139 lines
4.8 KiB
Diff
From ca57dbb5effd245e2619f4b730f8247f7279f954 Mon Sep 17 00:00:00 2001
|
|
From: Simon Kagstrom <simon.kagstrom@gmail.com>
|
|
Date: Thu, 16 Oct 2008 01:19:47 +0100
|
|
Subject: [PATCH] : lis302dl-open-floodgates-on-zero-threshold.patch
|
|
|
|
Generate data ready interrupts if threshold is zero
|
|
|
|
From: Simon Kagstrom <simon.kagstrom@gmail.com>
|
|
|
|
If the threshold is set to zero, enable the data ready interrupt
|
|
(generated one interrupt per datum). Otherwise use the freefall
|
|
interrupt as source.
|
|
|
|
Signed-off-by: Simon Kagstrom <simon.kagstrom@gmail.com>
|
|
---
|
|
drivers/input/misc/lis302dl.c | 64 +++++++++++++++++++++++++++-------------
|
|
1 files changed, 43 insertions(+), 21 deletions(-)
|
|
|
|
diff --git a/drivers/input/misc/lis302dl.c b/drivers/input/misc/lis302dl.c
|
|
index d738199..e404a45 100644
|
|
--- a/drivers/input/misc/lis302dl.c
|
|
+++ b/drivers/input/misc/lis302dl.c
|
|
@@ -44,6 +44,7 @@
|
|
#include <linux/lis302dl.h>
|
|
|
|
/* Utility functions */
|
|
+
|
|
static u8 __reg_read(struct lis302dl_info *lis, u8 reg)
|
|
{
|
|
return (lis->pdata->lis302dl_bitbang_reg_read)(lis, reg);
|
|
@@ -132,6 +133,36 @@ static void __lis302dl_int_mode(struct device *dev, int int_pin,
|
|
}
|
|
}
|
|
|
|
+static void __enable_data_collection(struct lis302dl_info *lis)
|
|
+{
|
|
+ u_int8_t ctrl1 = LIS302DL_CTRL1_PD | LIS302DL_CTRL1_Xen |
|
|
+ LIS302DL_CTRL1_Yen | LIS302DL_CTRL1_Zen;
|
|
+
|
|
+ /* make sure we're powered up and generate data ready */
|
|
+ __reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, ctrl1, ctrl1);
|
|
+
|
|
+ /* If the threshold is zero, let the device generated an interrupt
|
|
+ * on each datum */
|
|
+ if (lis->threshold == 0) {
|
|
+ __reg_write(lis, LIS302DL_REG_CTRL2, 0);
|
|
+ __lis302dl_int_mode(lis->dev, 1, LIS302DL_INTMODE_DATA_READY);
|
|
+ __lis302dl_int_mode(lis->dev, 2, LIS302DL_INTMODE_DATA_READY);
|
|
+ } else {
|
|
+ __reg_write(lis, LIS302DL_REG_CTRL2,
|
|
+ LIS302DL_CTRL2_HPFF1);
|
|
+ __reg_write(lis, LIS302DL_REG_FF_WU_THS_1, lis->threshold);
|
|
+ __reg_write(lis, LIS302DL_REG_FF_WU_DURATION_1, lis->duration);
|
|
+
|
|
+ /* Clear the HP filter "starting point" */
|
|
+ __reg_read(lis, LIS302DL_REG_HP_FILTER_RESET);
|
|
+ __reg_write(lis, LIS302DL_REG_FF_WU_CFG_1,
|
|
+ LIS302DL_FFWUCFG_XHIE | LIS302DL_FFWUCFG_YHIE |
|
|
+ LIS302DL_FFWUCFG_ZHIE);
|
|
+ __lis302dl_int_mode(lis->dev, 1, LIS302DL_INTMODE_FF_WU_12);
|
|
+ __lis302dl_int_mode(lis->dev, 2, LIS302DL_INTMODE_FF_WU_12);
|
|
+ }
|
|
+}
|
|
+
|
|
#if 0
|
|
static void _report_btn_single(struct input_dev *inp, int btn)
|
|
{
|
|
@@ -263,7 +294,7 @@ static ssize_t set_scale(struct device *dev, struct device_attribute *attr,
|
|
/* Adjust the threshold */
|
|
lis->threshold = __mg_to_threshold(lis, threshold_mg);
|
|
if (lis->flags & LIS302DL_F_INPUT_OPEN)
|
|
- __reg_write(lis, LIS302DL_REG_FF_WU_THS_1, lis->threshold);
|
|
+ __enable_data_collection(lis);
|
|
|
|
local_irq_restore(flags);
|
|
|
|
@@ -294,8 +325,14 @@ static ssize_t set_threshold(struct device *dev, struct device_attribute *attr,
|
|
|
|
/* Set the threshold and write it out if the device is used */
|
|
lis->threshold = __mg_to_threshold(lis, val);
|
|
- if (lis->flags & LIS302DL_F_INPUT_OPEN)
|
|
- __reg_write(lis, LIS302DL_REG_FF_WU_THS_1, lis->threshold);
|
|
+
|
|
+ if (lis->flags & LIS302DL_F_INPUT_OPEN) {
|
|
+ unsigned long flags;
|
|
+
|
|
+ local_irq_save(flags);
|
|
+ __enable_data_collection(lis);
|
|
+ local_irq_restore(flags);
|
|
+ }
|
|
|
|
return count;
|
|
}
|
|
@@ -562,29 +599,14 @@ static struct attribute_group lis302dl_attr_group = {
|
|
};
|
|
|
|
/* input device handling and driver core interaction */
|
|
-
|
|
static int lis302dl_input_open(struct input_dev *inp)
|
|
{
|
|
struct lis302dl_info *lis = inp->private;
|
|
- u_int8_t ctrl1 = LIS302DL_CTRL1_PD | LIS302DL_CTRL1_Xen |
|
|
- LIS302DL_CTRL1_Yen | LIS302DL_CTRL1_Zen;
|
|
- u_int8_t ctrl2 = LIS302DL_CTRL2_HPFF1;
|
|
unsigned long flags;
|
|
|
|
local_irq_save(flags);
|
|
- /* make sure we're powered up and generate data ready */
|
|
- __reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, ctrl1, ctrl1);
|
|
-
|
|
- __reg_write(lis, LIS302DL_REG_CTRL2,
|
|
- ctrl2);
|
|
- __reg_write(lis, LIS302DL_REG_FF_WU_THS_1, lis->threshold);
|
|
- __reg_write(lis, LIS302DL_REG_FF_WU_DURATION_1, lis->duration);
|
|
-
|
|
- /* Clear the HP filter "starting point" */
|
|
- __reg_read(lis, LIS302DL_REG_HP_FILTER_RESET);
|
|
- __reg_write(lis, LIS302DL_REG_FF_WU_CFG_1, LIS302DL_FFWUCFG_XHIE |
|
|
- LIS302DL_FFWUCFG_YHIE | LIS302DL_FFWUCFG_ZHIE);
|
|
|
|
+ __enable_data_collection(lis);
|
|
lis->flags |= LIS302DL_F_INPUT_OPEN;
|
|
|
|
/* kick it off -- since we are edge triggered, if we missed the edge
|
|
@@ -736,8 +758,8 @@ static int __devinit lis302dl_probe(struct platform_device *pdev)
|
|
/* push-pull, active-low */
|
|
__reg_write(lis, LIS302DL_REG_CTRL3, LIS302DL_CTRL3_IHL);
|
|
|
|
- __lis302dl_int_mode(lis->dev, 1, LIS302DL_INTMODE_FF_WU_12);
|
|
- __lis302dl_int_mode(lis->dev, 2, LIS302DL_INTMODE_FF_WU_12);
|
|
+ __lis302dl_int_mode(lis->dev, 1, LIS302DL_INTMODE_GND);
|
|
+ __lis302dl_int_mode(lis->dev, 2, LIS302DL_INTMODE_GND);
|
|
|
|
__reg_read(lis, LIS302DL_REG_STATUS);
|
|
__reg_read(lis, LIS302DL_REG_FF_WU_SRC_1);
|
|
--
|
|
1.5.6.5
|
|
|