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/platform_data/gpio-omap.h>
25 #include <linux/platform_data/keypad-omap.h>
26 #include <linux/soc/ti/omap1-io.h>
36 static int kp_cur_group = -1;
45 	unsigned int debounce;  member
75 	for (col = 0; col < omap_kp->cols; col++) {  in omap_kp_scan_keypad()
79 		udelay(omap_kp->delay);  in omap_kp_scan_keypad()
91 	unsigned short *keycodes = omap_kp_data->input->keycode;  in omap_kp_tasklet()
92 	unsigned int row_shift = get_count_order(omap_kp_data->cols);  in omap_kp_tasklet()
100 	for (col = 0; col < omap_kp_data->cols; col++) {  in omap_kp_tasklet()
106 		for (row = 0; row < omap_kp_data->rows; row++) {  in omap_kp_tasklet()
111 			printk(KERN_INFO "omap-keypad: key %d-%d %s\n", col,  in omap_kp_tasklet()
118 			      kp_cur_group == -1))  in omap_kp_tasklet()
122 			input_report_key(omap_kp_data->input, key & ~GROUP_MASK,  in omap_kp_tasklet()
127 	input_sync(omap_kp_data->input);  in omap_kp_tasklet()
131 		/* some key is pressed - keep irq disabled and use timer  in omap_kp_tasklet()
133 		mod_timer(&omap_kp_data->timer, jiffies + HZ / 20);  in omap_kp_tasklet()
137 		kp_cur_group = -1;  in omap_kp_tasklet()
154 		return -EINVAL;  in omap_kp_enable_store()
157 		return -EINVAL;  in omap_kp_enable_store()
162 			enable_irq(omap_kp->irq);  in omap_kp_enable_store()
164 			disable_irq(omap_kp->irq);  in omap_kp_enable_store()
184 	struct omap_kp_platform_data *pdata = dev_get_platdata(&pdev->dev);  in omap_kp_probe()
188 	if (!pdata->rows || !pdata->cols || !pdata->keymap_data) {  in omap_kp_probe()
190 		return -EINVAL;  in omap_kp_probe()
193 	row_shift = get_count_order(pdata->cols);  in omap_kp_probe()
194 	keycodemax = pdata->rows << row_shift;  in omap_kp_probe()
201 		return -ENOMEM;  in omap_kp_probe()
206 	omap_kp->input = input_dev;  in omap_kp_probe()
211 	if (pdata->delay)  in omap_kp_probe()
212 		omap_kp->delay = pdata->delay;  in omap_kp_probe()
214 	omap_kp->rows = pdata->rows;  in omap_kp_probe()
215 	omap_kp->cols = pdata->cols;  in omap_kp_probe()
217 	timer_setup(&omap_kp->timer, omap_kp_timer, 0);  in omap_kp_probe()
224 	input_dev->name = "omap-keypad";  in omap_kp_probe()
225 	input_dev->phys = "omap-keypad/input0";  in omap_kp_probe()
226 	input_dev->dev.parent = &pdev->dev;  in omap_kp_probe()
228 	input_dev->id.bustype = BUS_HOST;  in omap_kp_probe()
229 	input_dev->id.vendor = 0x0001;  in omap_kp_probe()
230 	input_dev->id.product = 0x0001;  in omap_kp_probe()
231 	input_dev->id.version = 0x0100;  in omap_kp_probe()
233 	if (pdata->rep)  in omap_kp_probe()
234 		__set_bit(EV_REP, input_dev->evbit);  in omap_kp_probe()
236 	ret = matrix_keypad_build_keymap(pdata->keymap_data, NULL,  in omap_kp_probe()
237 					 pdata->rows, pdata->cols,  in omap_kp_probe()
238 					 omap_kp->keymap, input_dev);  in omap_kp_probe()
242 	ret = input_register_device(omap_kp->input);  in omap_kp_probe()
244 		printk(KERN_ERR "Unable to register omap-keypad input device\n");  in omap_kp_probe()
248 	if (pdata->dbounce)  in omap_kp_probe()
253 	omap_kp->irq = platform_get_irq(pdev, 0);  in omap_kp_probe()
254 	if (omap_kp->irq >= 0) {  in omap_kp_probe()
255 		if (request_irq(omap_kp->irq, omap_kp_interrupt, 0,  in omap_kp_probe()
256 				"omap-keypad", omap_kp) < 0)  in omap_kp_probe()
264 	input_unregister_device(omap_kp->input);  in omap_kp_probe()
270 	return -EINVAL;  in omap_kp_probe()
280 	free_irq(omap_kp->irq, omap_kp);  in omap_kp_remove()
282 	timer_shutdown_sync(&omap_kp->timer);  in omap_kp_remove()
286 	input_unregister_device(omap_kp->input);  in omap_kp_remove()
295 		.name	= "omap-keypad",
304 MODULE_ALIAS("platform:omap-keypad");