24 static int gpio_decoder_get_gpios_state(struct gpio_decoder *decoder)  in gpio_decoder_get_gpios_state()  argument
26 	struct gpio_descs *gpios = decoder->input_gpios;  in gpio_decoder_get_gpios_state()
33 			dev_err(decoder->dev,  in gpio_decoder_get_gpios_state()
48 	struct gpio_decoder *decoder = input_get_drvdata(input);  in gpio_decoder_poll_gpios()  local
51 	state = gpio_decoder_get_gpios_state(decoder);  in gpio_decoder_poll_gpios()
52 	if (state >= 0 && state != decoder->last_stable) {  in gpio_decoder_poll_gpios()
53 		input_report_abs(input, decoder->axis, state);  in gpio_decoder_poll_gpios()
55 		decoder->last_stable = state;  in gpio_decoder_poll_gpios()
62 	struct gpio_decoder *decoder;  in gpio_decoder_probe()  local
67 	decoder = devm_kzalloc(dev, sizeof(*decoder), GFP_KERNEL);  in gpio_decoder_probe()
68 	if (!decoder)  in gpio_decoder_probe()
71 	decoder->dev = dev;  in gpio_decoder_probe()
72 	device_property_read_u32(dev, "linux,axis", &decoder->axis);  in gpio_decoder_probe()
74 	decoder->input_gpios = devm_gpiod_get_array(dev, NULL, GPIOD_IN);  in gpio_decoder_probe()
75 	if (IS_ERR(decoder->input_gpios)) {  in gpio_decoder_probe()
77 		return PTR_ERR(decoder->input_gpios);  in gpio_decoder_probe()
80 	if (decoder->input_gpios->ndescs < 2) {  in gpio_decoder_probe()
85 	if (device_property_read_u32(dev, "decoder-max-value", &max))  in gpio_decoder_probe()
86 		max = (1U << decoder->input_gpios->ndescs) - 1;  in gpio_decoder_probe()
92 	input_set_drvdata(input, decoder);  in gpio_decoder_probe()
96 	input_set_abs_params(input, decoder->axis, 0, max, 0, 0);  in gpio_decoder_probe()
115 	{ .compatible = "gpio-decoder", },
124 		.name	= "gpio-decoder",
130 MODULE_DESCRIPTION("GPIO decoder input driver");