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authorMirko Vogt <mirko@openwrt.org>2008-12-12 11:58:53 +0000
committerMirko Vogt <mirko@openwrt.org>2008-12-12 11:58:53 +0000
commit614683faf8029100802db06a825648d0b6490285 (patch)
tree7401b135dc7ce24ff0175e67e0f2ce7f96296ff0 /target/linux/s3c24xx/patches-2.6.24/1307--lis302dl-threshold-configuration-in-mg.patch.patch
parent4a018d2445c5f249179ff82c8fffb0e3b717f738 (diff)
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changed Makefile and profiles, added patches for kernel 2.6.24 (stable-branch of Openmoko)
SVN-Revision: 13613
Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.24/1307--lis302dl-threshold-configuration-in-mg.patch.patch')
-rw-r--r--target/linux/s3c24xx/patches-2.6.24/1307--lis302dl-threshold-configuration-in-mg.patch.patch131
1 files changed, 131 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1307--lis302dl-threshold-configuration-in-mg.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1307--lis302dl-threshold-configuration-in-mg.patch.patch
new file mode 100644
index 0000000..9aa9a3a
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.24/1307--lis302dl-threshold-configuration-in-mg.patch.patch
@@ -0,0 +1,131 @@
+From 5e2b5ddaf95985744e0e0c28ba6dac83c093fd15 Mon Sep 17 00:00:00 2001
+From: Simon Kagstrom <simon.kagstrom@gmail.com>
+Date: Thu, 16 Oct 2008 01:19:29 +0100
+Subject: [PATCH] : lis302dl-threshold-configuration-in-mg.patch
+
+Change the threshold configuration to be set in mg instead
+
+From: Simon Kagstrom <simon.kagstrom@gmail.com>
+
+This patch changes the threshold sysfs file to handle values in mg
+instead of the device-values. Overrun values have also been corrected
+and the sampler function now honors the FS bit.
+
+Signed-off-by: Simon Kagstrom <simon.kagstrom@gmail.com>
+---
+ drivers/input/misc/lis302dl.c | 49 ++++++++++++++++++++++++++++++++--------
+ 1 files changed, 39 insertions(+), 10 deletions(-)
+
+diff --git a/drivers/input/misc/lis302dl.c b/drivers/input/misc/lis302dl.c
+index 300918d..c1b1d67 100644
+--- a/drivers/input/misc/lis302dl.c
++++ b/drivers/input/misc/lis302dl.c
+@@ -97,6 +97,24 @@ static int __duration_to_ms(struct lis302dl_info *lis, int duration)
+ return duration * 10;
+ }
+
++static u8 __mg_to_threshold(struct lis302dl_info *lis, int mg)
++{
++ /* If FS is set each bit is 71mg, otherwise 18mg. The THS register
++ * has 7 bits for the threshold value */
++ if (lis->flags & LIS302DL_F_FS)
++ return min(mg / 71, 127);
++
++ return min(mg / 18, 127);
++}
++
++static int __threshold_to_mg(struct lis302dl_info *lis, u8 threshold)
++{
++ if (lis->flags & LIS302DL_F_FS)
++ return threshold * 71;
++
++ return threshold * 18;
++}
++
+ /* interrupt handling related */
+
+ enum lis302dl_intmode {
+@@ -146,23 +164,24 @@ static void _report_btn_double(struct input_dev *inp, int btn)
+ }
+ #endif
+
+-#define MG_PER_SAMPLE 18
+
+ static void lis302dl_bitbang_read_sample(struct lis302dl_info *lis)
+ {
+ u8 data = 0xc0 | LIS302DL_REG_OUT_X; /* read, autoincrement */
+ u8 read[5];
+ unsigned long flags;
++ int mg_per_sample;
+
+ local_irq_save(flags);
++ mg_per_sample = __threshold_to_mg(lis, 1);
+
+ (lis->pdata->lis302dl_bitbang)(lis, &data, 1, &read[0], 5);
+
+ local_irq_restore(flags);
+
+- input_report_rel(lis->input_dev, REL_X, MG_PER_SAMPLE * (s8)read[0]);
+- input_report_rel(lis->input_dev, REL_Y, MG_PER_SAMPLE * (s8)read[2]);
+- input_report_rel(lis->input_dev, REL_Z, MG_PER_SAMPLE * (s8)read[4]);
++ input_report_rel(lis->input_dev, REL_X, mg_per_sample * (s8)read[0]);
++ input_report_rel(lis->input_dev, REL_Y, mg_per_sample * (s8)read[2]);
++ input_report_rel(lis->input_dev, REL_Z, mg_per_sample * (s8)read[4]);
+
+ input_sync(lis->input_dev);
+
+@@ -234,15 +253,24 @@ static ssize_t set_scale(struct device *dev, struct device_attribute *attr,
+ {
+ struct lis302dl_info *lis = dev_get_drvdata(dev);
+ unsigned long flags;
++ int threshold_mg = __threshold_to_mg(lis, lis->threshold);
+
+ local_irq_save(flags);
+
+- if (!strcmp(buf, "9.2\n"))
++ if (!strcmp(buf, "9.2\n")) {
+ __reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_FS,
+ LIS302DL_CTRL1_FS);
+- else
++ lis->flags |= LIS302DL_F_FS;
++ } else {
+ __reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_FS,
+- 0);
++ 0);
++ lis->flags &= ~LIS302DL_F_FS;
++ }
++
++ /* 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);
+
+ local_irq_restore(flags);
+
+@@ -256,7 +284,7 @@ static ssize_t show_threshold(struct device *dev, struct device_attribute *attr,
+ {
+ struct lis302dl_info *lis = dev_get_drvdata(dev);
+
+- return sprintf(buf, "%d\n", lis->threshold);
++ return sprintf(buf, "%d\n", __threshold_to_mg(lis, lis->threshold));
+ }
+
+ static ssize_t set_threshold(struct device *dev, struct device_attribute *attr,
+@@ -267,11 +295,12 @@ static ssize_t set_threshold(struct device *dev, struct device_attribute *attr,
+
+ if (sscanf(buf, "%d\n", &val) != 1)
+ return -EINVAL;
+- if (val < 0 || val > 255)
++ /* 8g is the maximum if FS is 1 */
++ if (val < 0 || val > 8000)
+ return -ERANGE;
+
+ /* Set the threshold and write it out if the device is used */
+- lis->threshold = val;
++ 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);
+
+--
+1.5.6.5
+