1*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_count_count_mode_available 2*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_count_noise_error_available 3*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_count_quadrature_mode_available 4*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_index_index_polarity_available 5*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_index_synchronous_mode_available 6*4882a593SmuzhiyunKernelVersion: 4.10 7*4882a593SmuzhiyunContact: linux-iio@vger.kernel.org 8*4882a593SmuzhiyunDescription: 9*4882a593Smuzhiyun This interface is deprecated; please use the Counter subsystem. 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun Discrete set of available values for the respective counter 12*4882a593Smuzhiyun configuration are listed in this file. 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_countY_count_mode 15*4882a593SmuzhiyunKernelVersion: 4.10 16*4882a593SmuzhiyunContact: linux-iio@vger.kernel.org 17*4882a593SmuzhiyunDescription: 18*4882a593Smuzhiyun This interface is deprecated; please use the Counter subsystem. 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun Count mode for channel Y. Four count modes are available: 21*4882a593Smuzhiyun normal, range limit, non-recycle, and modulo-n. The preset value 22*4882a593Smuzhiyun for channel Y is used by the count mode where required. 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun Normal: 25*4882a593Smuzhiyun Counting is continuous in either direction. 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun Range Limit: 28*4882a593Smuzhiyun An upper or lower limit is set, mimicking limit switches 29*4882a593Smuzhiyun in the mechanical counterpart. The upper limit is set to 30*4882a593Smuzhiyun the preset value, while the lower limit is set to 0. The 31*4882a593Smuzhiyun counter freezes at count = preset when counting up, and 32*4882a593Smuzhiyun at count = 0 when counting down. At either of these 33*4882a593Smuzhiyun limits, the counting is resumed only when the count 34*4882a593Smuzhiyun direction is reversed. 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun Non-recycle: 37*4882a593Smuzhiyun Counter is disabled whenever a 24-bit count overflow or 38*4882a593Smuzhiyun underflow takes place. The counter is re-enabled when a 39*4882a593Smuzhiyun new count value is loaded to the counter via a preset 40*4882a593Smuzhiyun operation or write to raw. 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun Modulo-N: 43*4882a593Smuzhiyun A count boundary is set between 0 and the preset value. 44*4882a593Smuzhiyun The counter is reset to 0 at count = preset when 45*4882a593Smuzhiyun counting up, while the counter is set to the preset 46*4882a593Smuzhiyun value at count = 0 when counting down; the counter does 47*4882a593Smuzhiyun not freeze at the bundary points, but counts 48*4882a593Smuzhiyun continuously throughout. 49*4882a593Smuzhiyun 50*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_countY_noise_error 51*4882a593SmuzhiyunKernelVersion: 4.10 52*4882a593SmuzhiyunContact: linux-iio@vger.kernel.org 53*4882a593SmuzhiyunDescription: 54*4882a593Smuzhiyun This interface is deprecated; please use the Counter subsystem. 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun Read-only attribute that indicates whether excessive noise is 57*4882a593Smuzhiyun present at the channel Y count inputs in quadrature clock mode; 58*4882a593Smuzhiyun irrelevant in non-quadrature clock mode. 59*4882a593Smuzhiyun 60*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_countY_preset 61*4882a593SmuzhiyunKernelVersion: 4.10 62*4882a593SmuzhiyunContact: linux-iio@vger.kernel.org 63*4882a593SmuzhiyunDescription: 64*4882a593Smuzhiyun This interface is deprecated; please use the Counter subsystem. 65*4882a593Smuzhiyun 66*4882a593Smuzhiyun If the counter device supports preset registers, the preset 67*4882a593Smuzhiyun count for channel Y is provided by this attribute. 68*4882a593Smuzhiyun 69*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_countY_quadrature_mode 70*4882a593SmuzhiyunKernelVersion: 4.10 71*4882a593SmuzhiyunContact: linux-iio@vger.kernel.org 72*4882a593SmuzhiyunDescription: 73*4882a593Smuzhiyun This interface is deprecated; please use the Counter subsystem. 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun Configure channel Y counter for non-quadrature or quadrature 76*4882a593Smuzhiyun clock mode. Selecting non-quadrature clock mode will disable 77*4882a593Smuzhiyun synchronous load mode. In quadrature clock mode, the channel Y 78*4882a593Smuzhiyun scale attribute selects the encoder phase division (scale of 1 79*4882a593Smuzhiyun selects full-cycle, scale of 0.5 selects half-cycle, scale of 80*4882a593Smuzhiyun 0.25 selects quarter-cycle) processed by the channel Y counter. 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun Non-quadrature: 83*4882a593Smuzhiyun The filter and decoder circuit are bypassed. Encoder A 84*4882a593Smuzhiyun input serves as the count input and B as the UP/DOWN 85*4882a593Smuzhiyun direction control input, with B = 1 selecting UP Count 86*4882a593Smuzhiyun mode and B = 0 selecting Down Count mode. 87*4882a593Smuzhiyun 88*4882a593Smuzhiyun Quadrature: 89*4882a593Smuzhiyun Encoder A and B inputs are digitally filtered and 90*4882a593Smuzhiyun decoded for UP/DN clock. 91*4882a593Smuzhiyun 92*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_countY_set_to_preset_on_index 93*4882a593SmuzhiyunKernelVersion: 4.10 94*4882a593SmuzhiyunContact: linux-iio@vger.kernel.org 95*4882a593SmuzhiyunDescription: 96*4882a593Smuzhiyun This interface is deprecated; please use the Counter subsystem. 97*4882a593Smuzhiyun 98*4882a593Smuzhiyun Whether to set channel Y counter with channel Y preset value 99*4882a593Smuzhiyun when channel Y index input is active, or continuously count. 100*4882a593Smuzhiyun Valid attribute values are boolean. 101*4882a593Smuzhiyun 102*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_indexY_index_polarity 103*4882a593SmuzhiyunKernelVersion: 4.10 104*4882a593SmuzhiyunContact: linux-iio@vger.kernel.org 105*4882a593SmuzhiyunDescription: 106*4882a593Smuzhiyun This interface is deprecated; please use the Counter subsystem. 107*4882a593Smuzhiyun 108*4882a593Smuzhiyun Active level of channel Y index input; irrelevant in 109*4882a593Smuzhiyun non-synchronous load mode. 110*4882a593Smuzhiyun 111*4882a593SmuzhiyunWhat: /sys/bus/iio/devices/iio:deviceX/in_indexY_synchronous_mode 112*4882a593SmuzhiyunKernelVersion: 4.10 113*4882a593SmuzhiyunContact: linux-iio@vger.kernel.org 114*4882a593SmuzhiyunDescription: 115*4882a593Smuzhiyun This interface is deprecated; please use the Counter subsystem. 116*4882a593Smuzhiyun 117*4882a593Smuzhiyun Configure channel Y counter for non-synchronous or synchronous 118*4882a593Smuzhiyun load mode. Synchronous load mode cannot be selected in 119*4882a593Smuzhiyun non-quadrature clock mode. 120*4882a593Smuzhiyun 121*4882a593Smuzhiyun Non-synchronous: 122*4882a593Smuzhiyun A logic low level is the active level at this index 123*4882a593Smuzhiyun input. The index function (as enabled via 124*4882a593Smuzhiyun set_to_preset_on_index) is performed directly on the 125*4882a593Smuzhiyun active level of the index input. 126*4882a593Smuzhiyun 127*4882a593Smuzhiyun Synchronous: 128*4882a593Smuzhiyun Intended for interfacing with encoder Index output in 129*4882a593Smuzhiyun quadrature clock mode. The active level is configured 130*4882a593Smuzhiyun via index_polarity. The index function (as enabled via 131*4882a593Smuzhiyun set_to_preset_on_index) is performed synchronously with 132*4882a593Smuzhiyun the quadrature clock on the active level of the index 133*4882a593Smuzhiyun input. 134