1 // SPDX-License-Identifier: GPL-2.0-or-later
17 #include <linux/mfd/syscon.h>
18 #include <linux/mfd/syscon/clps711x.h>
28 	struct regmap			*syscon;  member
36 	const unsigned short *keycodes = input->keycode;  in clps711x_keypad_poll()
43 		regmap_update_bits(priv->syscon, SYSCON_OFFSET,  in clps711x_keypad_poll()
48 		for (row = 0; row < priv->row_count; row++) {  in clps711x_keypad_poll()
49 			struct clps711x_gpio_data *data = &priv->gpio_data[row];  in clps711x_keypad_poll()
54 				state = gpiod_get_value_cansleep(data->desc);  in clps711x_keypad_poll()
56 				state1 = gpiod_get_value_cansleep(data->desc);  in clps711x_keypad_poll()
59 			if (test_bit(col, data->last_state) != state) {  in clps711x_keypad_poll()
61 							    priv->row_shift);  in clps711x_keypad_poll()
64 					set_bit(col, data->last_state);  in clps711x_keypad_poll()
68 					clear_bit(col, data->last_state);  in clps711x_keypad_poll()
79 		regmap_update_bits(priv->syscon, SYSCON_OFFSET,  in clps711x_keypad_poll()
90 	struct device *dev = &pdev->dev;  in clps711x_keypad_probe()  local
95 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);  in clps711x_keypad_probe()
97 		return -ENOMEM;  in clps711x_keypad_probe()
99 	priv->syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");  in clps711x_keypad_probe()
100 	if (IS_ERR(priv->syscon))  in clps711x_keypad_probe()
101 		return PTR_ERR(priv->syscon);  in clps711x_keypad_probe()
103 	priv->row_count = gpiod_count(dev, "row");  in clps711x_keypad_probe()
104 	if (priv->row_count < 1)  in clps711x_keypad_probe()
105 		return -EINVAL;  in clps711x_keypad_probe()
107 	priv->gpio_data = devm_kcalloc(dev,  in clps711x_keypad_probe()
108 				priv->row_count, sizeof(*priv->gpio_data),  in clps711x_keypad_probe()
110 	if (!priv->gpio_data)  in clps711x_keypad_probe()
111 		return -ENOMEM;  in clps711x_keypad_probe()
113 	priv->row_shift = get_count_order(CLPS711X_KEYPAD_COL_COUNT);  in clps711x_keypad_probe()
115 	for (i = 0; i < priv->row_count; i++) {  in clps711x_keypad_probe()
116 		struct clps711x_gpio_data *data = &priv->gpio_data[i];  in clps711x_keypad_probe()
118 		data->desc = devm_gpiod_get_index(dev, "row", i, GPIOD_IN);  in clps711x_keypad_probe()
119 		if (IS_ERR(data->desc))  in clps711x_keypad_probe()
120 			return PTR_ERR(data->desc);  in clps711x_keypad_probe()
123 	err = device_property_read_u32(dev, "poll-interval", &poll_interval);  in clps711x_keypad_probe()
127 	input = devm_input_allocate_device(dev);  in clps711x_keypad_probe()
129 		return -ENOMEM;  in clps711x_keypad_probe()
133 	input->name		= pdev->name;  in clps711x_keypad_probe()
134 	input->dev.parent	= dev;  in clps711x_keypad_probe()
135 	input->id.bustype	= BUS_HOST;  in clps711x_keypad_probe()
136 	input->id.vendor	= 0x0001;  in clps711x_keypad_probe()
137 	input->id.product	= 0x0001;  in clps711x_keypad_probe()
138 	input->id.version	= 0x0100;  in clps711x_keypad_probe()
140 	err = matrix_keypad_build_keymap(NULL, NULL, priv->row_count,  in clps711x_keypad_probe()
147 	if (device_property_read_bool(dev, "autorepeat"))  in clps711x_keypad_probe()
148 		__set_bit(EV_REP, input->evbit);  in clps711x_keypad_probe()
151 	regmap_update_bits(priv->syscon, SYSCON_OFFSET, SYSCON1_KBDSCAN_MASK,  in clps711x_keypad_probe()
169 	{ .compatible = "cirrus,ep7209-keypad", },
176 		.name		= "clps711x-keypad",