1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * linux/drivers/input/keyboard/omap-keypad.c
8  * Written by Timo Teräs <ext-timo.teras@nokia.com>
24 #include <linux/gpio.h>
25 #include <linux/platform_data/gpio-omap.h>
26 #include <linux/platform_data/keypad-omap.h>
36 static int kp_cur_group = -1;
46 	unsigned short keymap[];  member
78 	for (col = 0; col < omap_kp->cols; col++) {  in omap_kp_scan_keypad()
82 		udelay(omap_kp->delay);  in omap_kp_scan_keypad()
94 	unsigned short *keycodes = omap_kp_data->input->keycode;  in omap_kp_tasklet()
95 	unsigned int row_shift = get_count_order(omap_kp_data->cols);  in omap_kp_tasklet()
103 	for (col = 0; col < omap_kp_data->cols; col++) {  in omap_kp_tasklet()
109 		for (row = 0; row < omap_kp_data->rows; row++) {  in omap_kp_tasklet()
114 			printk(KERN_INFO "omap-keypad: key %d-%d %s\n", col,  in omap_kp_tasklet()
121 			      kp_cur_group == -1))  in omap_kp_tasklet()
125 			input_report_key(omap_kp_data->input, key & ~GROUP_MASK,  in omap_kp_tasklet()
130 	input_sync(omap_kp_data->input);  in omap_kp_tasklet()
134 		/* some key is pressed - keep irq disabled and use timer  in omap_kp_tasklet()
136 		mod_timer(&omap_kp_data->timer, jiffies + HZ / 20);  in omap_kp_tasklet()
140 		kp_cur_group = -1;  in omap_kp_tasklet()
157 		return -EINVAL;  in omap_kp_enable_store()
160 		return -EINVAL;  in omap_kp_enable_store()
165 			enable_irq(omap_kp->irq);  in omap_kp_enable_store()
167 			disable_irq(omap_kp->irq);  in omap_kp_enable_store()
181 	struct omap_kp_platform_data *pdata = dev_get_platdata(&pdev->dev);  in omap_kp_probe()
185 	if (!pdata->rows || !pdata->cols || !pdata->keymap_data) {  in omap_kp_probe()
187 		return -EINVAL;  in omap_kp_probe()
190 	row_shift = get_count_order(pdata->cols);  in omap_kp_probe()
191 	keycodemax = pdata->rows << row_shift;  in omap_kp_probe()
199 		return -ENOMEM;  in omap_kp_probe()
204 	omap_kp->input = input_dev;  in omap_kp_probe()
209 	if (pdata->delay)  in omap_kp_probe()
210 		omap_kp->delay = pdata->delay;  in omap_kp_probe()
212 	if (pdata->row_gpios && pdata->col_gpios) {  in omap_kp_probe()
213 		row_gpios = pdata->row_gpios;  in omap_kp_probe()
214 		col_gpios = pdata->col_gpios;  in omap_kp_probe()
217 	omap_kp->rows = pdata->rows;  in omap_kp_probe()
218 	omap_kp->cols = pdata->cols;  in omap_kp_probe()
223 	timer_setup(&omap_kp->timer, omap_kp_timer, 0);  in omap_kp_probe()
229 	ret = device_create_file(&pdev->dev, &dev_attr_enable);  in omap_kp_probe()
234 	input_dev->name = "omap-keypad";  in omap_kp_probe()
235 	input_dev->phys = "omap-keypad/input0";  in omap_kp_probe()
236 	input_dev->dev.parent = &pdev->dev;  in omap_kp_probe()
238 	input_dev->id.bustype = BUS_HOST;  in omap_kp_probe()
239 	input_dev->id.vendor = 0x0001;  in omap_kp_probe()
240 	input_dev->id.product = 0x0001;  in omap_kp_probe()
241 	input_dev->id.version = 0x0100;  in omap_kp_probe()
243 	if (pdata->rep)  in omap_kp_probe()
244 		__set_bit(EV_REP, input_dev->evbit);  in omap_kp_probe()
246 	ret = matrix_keypad_build_keymap(pdata->keymap_data, NULL,  in omap_kp_probe()
247 					 pdata->rows, pdata->cols,  in omap_kp_probe()
248 					 omap_kp->keymap, input_dev);  in omap_kp_probe()
252 	ret = input_register_device(omap_kp->input);  in omap_kp_probe()
254 		printk(KERN_ERR "Unable to register omap-keypad input device\n");  in omap_kp_probe()
258 	if (pdata->dbounce)  in omap_kp_probe()
263 	omap_kp->irq = platform_get_irq(pdev, 0);  in omap_kp_probe()
264 	if (omap_kp->irq >= 0) {  in omap_kp_probe()
265 		if (request_irq(omap_kp->irq, omap_kp_interrupt, 0,  in omap_kp_probe()
266 				"omap-keypad", omap_kp) < 0)  in omap_kp_probe()
274 	input_unregister_device(omap_kp->input);  in omap_kp_probe()
277 	device_remove_file(&pdev->dev, &dev_attr_enable);  in omap_kp_probe()
279 	for (i = row_idx - 1; i >= 0; i--)  in omap_kp_probe()
281 	for (i = col_idx - 1; i >= 0; i--)  in omap_kp_probe()
287 	return -EINVAL;  in omap_kp_probe()
297 	free_irq(omap_kp->irq, omap_kp);  in omap_kp_remove()
299 	del_timer_sync(&omap_kp->timer);  in omap_kp_remove()
303 	input_unregister_device(omap_kp->input);  in omap_kp_remove()
314 		.name	= "omap-keypad",
322 MODULE_ALIAS("platform:omap-keypad");