34 static int gpio_decoder_get_gpios_state(struct gpio_decoder *decoder)  in gpio_decoder_get_gpios_state()  argument
36 	struct gpio_descs *gpios = decoder->input_gpios;  in gpio_decoder_get_gpios_state()
43 			dev_err(decoder->dev,  in gpio_decoder_get_gpios_state()
58 	struct gpio_decoder *decoder = poll_dev->private;  in gpio_decoder_poll_gpios()  local
61 	state = gpio_decoder_get_gpios_state(decoder);  in gpio_decoder_poll_gpios()
62 	if (state >= 0 && state != decoder->last_stable) {  in gpio_decoder_poll_gpios()
63 		input_report_abs(poll_dev->input, decoder->axis, state);  in gpio_decoder_poll_gpios()
65 		decoder->last_stable = state;  in gpio_decoder_poll_gpios()
72 	struct gpio_decoder *decoder;  in gpio_decoder_probe()  local
77 	decoder = devm_kzalloc(dev, sizeof(struct gpio_decoder), GFP_KERNEL);  in gpio_decoder_probe()
78 	if (!decoder)  in gpio_decoder_probe()
81 	device_property_read_u32(dev, "linux,axis", &decoder->axis);  in gpio_decoder_probe()
82 	decoder->input_gpios = devm_gpiod_get_array(dev, NULL, GPIOD_IN);  in gpio_decoder_probe()
83 	if (IS_ERR(decoder->input_gpios)) {  in gpio_decoder_probe()
85 		return PTR_ERR(decoder->input_gpios);  in gpio_decoder_probe()
87 	if (decoder->input_gpios->ndescs < 2) {  in gpio_decoder_probe()
93 		max = (1U << decoder->input_gpios->ndescs) - 1;  in gpio_decoder_probe()
95 	decoder->dev = dev;  in gpio_decoder_probe()
96 	poll_dev = devm_input_allocate_polled_device(decoder->dev);  in gpio_decoder_probe()
100 	poll_dev->private = decoder;  in gpio_decoder_probe()
102 	decoder->poll_dev = poll_dev;  in gpio_decoder_probe()
106 	input_set_abs_params(poll_dev->input, decoder->axis, 0, max, 0, 0);  in gpio_decoder_probe()