Messages in this thread | | | Date | Tue, 8 Aug 2006 12:19:39 +0000 | From | Pavel Machek <> | Subject | Re: [PATCH 09/12] hdaps: Add new sysfs attributes |
| |
Hi!
> This patch adds 4 new r/w sysfs attributes to the hdaps driver: > > /sys/devices/platform/hdaps/sampling_rate: > This determines the frequency of hardware queries and input device updates. > Default=50. > /sys/devices/platform/hdaps/oversampling_ratio: > When set to X, the embedded controller is told to do physical accelerometer > measurements at a rate that is X times higher than the rate at which > the driver reads those measurements (i.e., X*sampling_rate). This > reduces sample phase difference is, and useful for the running average > filter (see next). Default=5 > /sys/devices/platform/hdaps/running_avg_filter_order: > When set to X, reported readouts will be the average of the last X physical > accelerometer measurements. Current firmware allows 1<=X<=8. Setting to a > high value decreases readout fluctuations. The averaging is handled > by the embedded controller, so no CPU resources are used. Default=2. > /sys/devices/platform/hdaps/fake_data_mode: > If set to 1, enables a test mode where the physical accelerometer readouts > are replaced with an incrementing counter. This is useful for checking the > regularity of the sampling interval and driver<->userspace communication, > which is useful for development and testing of the hdapd userspace daemon. > > Signed-off-by: Shem Multinymous <multinymous@gmail.com>
Signed-off-by: Pavel Machek <pavel@suse.cz>
> +static ssize_t hdaps_fake_data_mode_store(struct device *dev, > + struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + int on, ret; > + if (sscanf(buf, "%d", &on) != 1 || on<0 || on>1) { > + printk(KERN_WARNING > + "fake_data should be 0 or 1\n");
Kill the printk? Pavel -- Thanks for all the (sleeping) penguins. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |