5  * SPDX-License-Identifier: Apache-2.0
34 	/* Keyboard scan input (KSI) wake-up irq */
36 	/* Size of keyboard inputs-wui mapping array */
59 	const struct npcx_kbd_config *const config = dev->config;  in npcx_kbd_set_detect_mode()
60 	const struct input_kbd_matrix_common_config *common = &config->common;  in npcx_kbd_set_detect_mode()
63 		for (int i = 0; i < common->row_size; i++) {  in npcx_kbd_set_detect_mode()
64 			npcx_miwu_irq_get_and_clear_pending(&config->wui_maps[i]);  in npcx_kbd_set_detect_mode()
67 		irq_enable(config->irq);  in npcx_kbd_set_detect_mode()
69 		irq_disable(config->irq);  in npcx_kbd_set_detect_mode()
73 static void npcx_kbd_drive_column(const struct device *dev, int col)  in npcx_kbd_drive_column()  argument
75 	const struct npcx_kbd_config *config = dev->config;  in npcx_kbd_drive_column()
76 	const struct input_kbd_matrix_common_config *common = &config->common;  in npcx_kbd_drive_column()
77 	struct kbs_reg *const inst = config->base;  in npcx_kbd_drive_column()
80 	if (col >= common->col_size) {  in npcx_kbd_drive_column()
81 		LOG_ERR("invalid column: %d", col);  in npcx_kbd_drive_column()
85 	if (col == INPUT_KBD_MATRIX_COLUMN_DRIVE_NONE) {  in npcx_kbd_drive_column()
88 	} else if (col == INPUT_KBD_MATRIX_COLUMN_DRIVE_ALL) {  in npcx_kbd_drive_column()
90 		mask = ~BIT_MASK(common->col_size);  in npcx_kbd_drive_column()
96 		mask = ~BIT(col);  in npcx_kbd_drive_column()
99 	LOG_DBG("Drive col mask: %x", mask);  in npcx_kbd_drive_column()
101 	inst->KBSOUT0 = (mask & 0xFFFF);  in npcx_kbd_drive_column()
102 	inst->KBSOUT1 = ((mask >> 16) & 0x03);  in npcx_kbd_drive_column()
107 	const struct npcx_kbd_config *config = dev->config;  in npcx_kbd_read_row()
108 	const struct input_kbd_matrix_common_config *common = &config->common;  in npcx_kbd_read_row()
109 	struct kbs_reg *const inst = config->base;  in npcx_kbd_read_row()
112 	val = inst->KBSIN;  in npcx_kbd_read_row()
115 	val = ~val & BIT_MASK(common->row_size);  in npcx_kbd_read_row()
125 	/* KSI signal which has no wake-up input source */  in npcx_kbd_init_ksi_wui_callback()
126 	if (wui->table == NPCX_MIWU_TABLE_NONE) {  in npcx_kbd_init_ksi_wui_callback()
142 	const struct npcx_kbd_config *const config = dev->config;  in npcx_kbd_init()
143 	const struct input_kbd_matrix_common_config *common = &config->common;  in npcx_kbd_init()
144 	struct npcx_kbd_data *const data = dev->data;  in npcx_kbd_init()
145 	struct kbs_reg *const inst = config->base;  in npcx_kbd_init()
149 		LOG_ERR("%s device not ready", clk_dev->name);  in npcx_kbd_init()
150 		return -ENODEV;  in npcx_kbd_init()
154 	ret = clock_control_on(clk_dev, (clock_control_subsys_t)&config->clk_cfg);  in npcx_kbd_init()
157 		return -EIO;  in npcx_kbd_init()
160 	/* Pull-up KBSIN0-7 internally */  in npcx_kbd_init()
161 	inst->KBSINPU = 0xFF;  in npcx_kbd_init()
166 	 * [6:7] - KBHDRV KBSOUTn signals output buffers are open-drain.  in npcx_kbd_init()
167 	 * [3] - KBSINC   Auto-increment of Buffer Data register is disabled  in npcx_kbd_init()
168 	 * [2] - KBSIEN   Interrupt of Auto-Scan is disabled  in npcx_kbd_init()
169 	 * [1] - KBSMODE  Key detection mechanism is implemented by firmware  in npcx_kbd_init()
170 	 * [0] - START    Write 0 to this field is not affected  in npcx_kbd_init()
172 	inst->KBSCTL = 0x00;  in npcx_kbd_init()
175 	 * Select quasi-bidirectional buffers for KSO pins. It reduces the  in npcx_kbd_init()
176 	 * low-to-high transition time. This feature only supports in npcx7.  in npcx_kbd_init()
179 		SET_FIELD(inst->KBSCTL, NPCX_KBSCTL_KBHDRV_FIELD, 0x01);  in npcx_kbd_init()
185 	if (common->row_size != ROW_SIZE) {  in npcx_kbd_init()
186 		LOG_ERR("Unexpected ROW_SIZE: %d != %d", common->row_size, ROW_SIZE);  in npcx_kbd_init()
187 		return -EINVAL;  in npcx_kbd_init()
190 	/* Configure wake-up input and callback for keyboard input signal */  in npcx_kbd_init()
191 	for (int i = 0; i < common->row_size; i++) {  in npcx_kbd_init()
193 				dev, &data->ksi_callback[i], &config->wui_maps[i],  in npcx_kbd_init()
197 	/* Configure pin-mux for keyboard scan device */  in npcx_kbd_init()
198 	ret = pinctrl_apply_state(config->pcfg, PINCTRL_STATE_DEFAULT);  in npcx_kbd_init()
240 	     "only one nuvoton,npcx-kbd compatible node can be supported");
241 BUILD_ASSERT(IN_RANGE(DT_INST_PROP(0, row_size), 1, 8), "invalid row-size");
242 BUILD_ASSERT(IN_RANGE(DT_INST_PROP(0, col_size), 1, 18), "invalid col-size");