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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-2.6.24/1308--lis302dl-configure-duration.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-2.6.24/1308--lis302dl-configure-duration.patch.patch')
-rw-r--r--target/linux/s3c24xx/patches-2.6.24/1308--lis302dl-configure-duration.patch.patch167
1 files changed, 167 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.24/1308--lis302dl-configure-duration.patch.patch b/target/linux/s3c24xx/patches-2.6.24/1308--lis302dl-configure-duration.patch.patch
new file mode 100644
index 0000000..dbe08b4
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.24/1308--lis302dl-configure-duration.patch.patch
@@ -0,0 +1,167 @@
+From d3c59382c7e8429e2c86eb92cc2518dce26c4a69 Mon Sep 17 00:00:00 2001
+From: Simon Kagstrom <simon.kagstrom@gmail.com>
+Date: Thu, 16 Oct 2008 01:19:39 +0100
+Subject: [PATCH] : lis302dl-configure-duration.patch
+
+Allow configuration of the duration for thresholds
+
+From: Simon Kagstrom <simon.kagstrom@gmail.com>
+
+This patch allows the configuration of duration used when generating
+filtered data (see the lis302dl application note). Also set a flag when
+the DR bit in the ctrl1 register is set to change the data rate and
+simplify the ms_to_duration utility functions.
+
+The sysfs 'duration' file is used for this.
+
+Signed-off-by: Simon Kagstrom <simon.kagstrom@gmail.com>
+---
+ drivers/input/misc/lis302dl.c | 63 ++++++++++++++++++++++++++++-------------
+ include/linux/lis302dl.h | 2 +
+ 2 files changed, 45 insertions(+), 20 deletions(-)
+
+diff --git a/drivers/input/misc/lis302dl.c b/drivers/input/misc/lis302dl.c
+index c1b1d67..d738199 100644
+--- a/drivers/input/misc/lis302dl.c
++++ b/drivers/input/misc/lis302dl.c
+@@ -69,29 +69,17 @@ static void __reg_set_bit_mask(struct lis302dl_info *lis, u8 reg, u8 mask,
+
+ static int __ms_to_duration(struct lis302dl_info *lis, int ms)
+ {
+- u8 r = __reg_read(lis, LIS302DL_REG_CTRL1);
+-
+ /* If we have 400 ms sampling rate, the stepping is 2.5 ms,
+ * on 100 ms the stepping is 10ms */
+- if (r & LIS302DL_CTRL1_DR) {
+- /* Too large */
+- if (ms > 637)
+- return -1;
+-
+- return (ms * 10) / 25;
+- }
++ if (lis->flags & LIS302DL_F_DR)
++ return min((ms * 10) / 25, 637);
+
+- /* Too large value */
+- if (ms > 2550)
+- return -1;
+- return ms / 10;
++ return min(ms / 10, 2550);
+ }
+
+ static int __duration_to_ms(struct lis302dl_info *lis, int duration)
+ {
+- u8 r = __reg_read(lis, LIS302DL_REG_CTRL1);
+-
+- if (r & LIS302DL_CTRL1_DR)
++ if (lis->flags & LIS302DL_F_DR)
+ return (duration * 25) / 10;
+
+ return duration * 10;
+@@ -218,15 +206,20 @@ static ssize_t set_rate(struct device *dev, struct device_attribute *attr,
+ {
+ struct lis302dl_info *lis = dev_get_drvdata(dev);
+ unsigned long flags;
++ int duration_ms = __duration_to_ms(lis, lis->duration);
+
+ local_irq_save(flags);
+
+- if (!strcmp(buf, "400\n"))
++ if (!strcmp(buf, "400\n")) {
+ __reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_DR,
+ LIS302DL_CTRL1_DR);
+- else
++ lis->flags |= LIS302DL_F_DR;
++ } else {
+ __reg_set_bit_mask(lis, LIS302DL_REG_CTRL1, LIS302DL_CTRL1_DR,
+- 0);
++ 0);
++ lis->flags &= ~LIS302DL_F_DR;
++ }
++ lis->duration = __ms_to_duration(lis, duration_ms);
+ local_irq_restore(flags);
+
+ return count;
+@@ -309,6 +302,34 @@ static ssize_t set_threshold(struct device *dev, struct device_attribute *attr,
+
+ static DEVICE_ATTR(threshold, S_IRUGO | S_IWUSR, show_threshold, set_threshold);
+
++static ssize_t show_duration(struct device *dev, struct device_attribute *attr,
++ char *buf)
++{
++ struct lis302dl_info *lis = dev_get_drvdata(dev);
++
++ return sprintf(buf, "%d\n", __duration_to_ms(lis, lis->duration));
++}
++
++static ssize_t set_duration(struct device *dev, struct device_attribute *attr,
++ const char *buf, size_t count)
++{
++ struct lis302dl_info *lis = dev_get_drvdata(dev);
++ u32 val;
++
++ if (sscanf(buf, "%d\n", &val) != 1)
++ return -EINVAL;
++ if (val < 0 || val > 2550)
++ return -ERANGE;
++
++ lis->duration = __ms_to_duration(lis, val);
++ if (lis->flags & LIS302DL_F_INPUT_OPEN)
++ __reg_write(lis, LIS302DL_REG_FF_WU_DURATION_1, lis->duration);
++
++ return count;
++}
++
++static DEVICE_ATTR(duration, S_IRUGO | S_IWUSR, show_duration, set_duration);
++
+ static ssize_t lis302dl_dump(struct device *dev, struct device_attribute *attr,
+ char *buf)
+ {
+@@ -528,6 +549,7 @@ static struct attribute *lis302dl_sysfs_entries[] = {
+ &dev_attr_sample_rate.attr,
+ &dev_attr_full_scale.attr,
+ &dev_attr_threshold.attr,
++ &dev_attr_duration.attr,
+ &dev_attr_dump.attr,
+ &dev_attr_freefall_wakeup_1.attr,
+ &dev_attr_freefall_wakeup_2.attr,
+@@ -556,7 +578,7 @@ static int lis302dl_input_open(struct input_dev *inp)
+ __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, 0);
++ __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);
+@@ -670,6 +692,7 @@ static int __devinit lis302dl_probe(struct platform_device *pdev)
+ set_bit(BTN_Z, lis->input_dev->keybit);
+ */
+ lis->threshold = 1;
++ lis->duration = 0;
+
+ lis->input_dev->private = lis;
+ lis->input_dev->name = pdata->name;
+diff --git a/include/linux/lis302dl.h b/include/linux/lis302dl.h
+index a756f55..f7aa956 100644
+--- a/include/linux/lis302dl.h
++++ b/include/linux/lis302dl.h
+@@ -30,6 +30,7 @@ struct lis302dl_info {
+ struct input_dev *input_dev;
+ unsigned int flags;
+ unsigned int threshold;
++ unsigned int duration;
+ u_int8_t regs[0x40];
+ };
+
+@@ -142,6 +143,7 @@ enum lis302dl_reg_cloik_src {
+ #define LIS302DL_F_FS 0x0020 /* ADC full scale */
+ #define LIS302DL_F_INPUT_OPEN 0x0040 /* Set if input device is opened */
+ #define LIS302DL_F_IRQ_WAKE 0x0080 /* IRQ is setup in wake mode */
++#define LIS302DL_F_DR 0x0100 /* Data rate, 400Hz/100Hz */
+
+
+ #endif /* _LINUX_LIS302DL_H */
+--
+1.5.6.5
+