116  * struct stmpe_keypad - STMPE keypad state container
141 static int stmpe_keypad_read_data(struct stmpe_keypad *keypad, u8 *data)  in stmpe_keypad_read_data()  argument
143 	const struct stmpe_keypad_variant *variant = keypad->variant;  in stmpe_keypad_read_data()
144 	struct stmpe *stmpe = keypad->stmpe;  in stmpe_keypad_read_data()
165 	struct stmpe_keypad *keypad = dev;  in stmpe_keypad_irq()  local
166 	struct input_dev *input = keypad->input;  in stmpe_keypad_irq()
167 	const struct stmpe_keypad_variant *variant = keypad->variant;  in stmpe_keypad_irq()
172 	ret = stmpe_keypad_read_data(keypad, fifo);  in stmpe_keypad_irq()
188 		input_report_key(input, keypad->keymap[code], !up);  in stmpe_keypad_irq()
195 static int stmpe_keypad_altfunc_init(struct stmpe_keypad *keypad)  in stmpe_keypad_altfunc_init()  argument
197 	const struct stmpe_keypad_variant *variant = keypad->variant;  in stmpe_keypad_altfunc_init()
200 	struct stmpe *stmpe = keypad->stmpe;  in stmpe_keypad_altfunc_init()
208 	 * Figure out which pins need to be set to the keypad alternate  in stmpe_keypad_altfunc_init()
212 	 * for the keypad.  in stmpe_keypad_altfunc_init()
214 	 * keypad->{cols,rows} are a bitmask of which pins (of the ones useable  in stmpe_keypad_altfunc_init()
215 	 * for the keypad) are used on the board.  in stmpe_keypad_altfunc_init()
221 		if (keypad->cols & (1 << i)) {  in stmpe_keypad_altfunc_init()
232 		if (keypad->rows & (1 << i))  in stmpe_keypad_altfunc_init()
243 	 * On STMPE24xx, set pin bias to pull-up on all keypad input  in stmpe_keypad_altfunc_init()
265 static int stmpe_keypad_chip_init(struct stmpe_keypad *keypad)  in stmpe_keypad_chip_init()  argument
267 	const struct stmpe_keypad_variant *variant = keypad->variant;  in stmpe_keypad_chip_init()
268 	struct stmpe *stmpe = keypad->stmpe;  in stmpe_keypad_chip_init()
271 	if (keypad->debounce_ms > STMPE_KEYPAD_MAX_DEBOUNCE)  in stmpe_keypad_chip_init()
274 	if (keypad->scan_count > STMPE_KEYPAD_MAX_SCAN_COUNT)  in stmpe_keypad_chip_init()
281 	ret = stmpe_keypad_altfunc_init(keypad);  in stmpe_keypad_chip_init()
285 	ret = stmpe_reg_write(stmpe, STMPE_KPC_COL, keypad->cols);  in stmpe_keypad_chip_init()
289 	ret = stmpe_reg_write(stmpe, STMPE_KPC_ROW_LSB, keypad->rows);  in stmpe_keypad_chip_init()
296 				     keypad->rows >> 8);  in stmpe_keypad_chip_init()
303 			     keypad->scan_count << 4);  in stmpe_keypad_chip_init()
311 			      (keypad->debounce_ms << 1));  in stmpe_keypad_chip_init()
314 static void stmpe_keypad_fill_used_pins(struct stmpe_keypad *keypad,  in stmpe_keypad_fill_used_pins()  argument
323 			if (keypad->keymap[code] != KEY_RESERVED) {  in stmpe_keypad_fill_used_pins()
324 				keypad->rows |= 1 << row;  in stmpe_keypad_fill_used_pins()
325 				keypad->cols |= 1 << col;  in stmpe_keypad_fill_used_pins()
335 	struct stmpe_keypad *keypad;  in stmpe_keypad_probe()  local
346 	keypad = devm_kzalloc(&pdev->dev, sizeof(struct stmpe_keypad),  in stmpe_keypad_probe()
348 	if (!keypad)  in stmpe_keypad_probe()
351 	keypad->stmpe = stmpe;  in stmpe_keypad_probe()
352 	keypad->variant = &stmpe_keypad_variants[stmpe->partnum];  in stmpe_keypad_probe()
354 	of_property_read_u32(np, "debounce-interval", &keypad->debounce_ms);  in stmpe_keypad_probe()
355 	of_property_read_u32(np, "st,scan-count", &keypad->scan_count);  in stmpe_keypad_probe()
356 	keypad->no_autorepeat = of_property_read_bool(np, "st,no-autorepeat");  in stmpe_keypad_probe()
362 	input->name = "STMPE keypad";  in stmpe_keypad_probe()
371 					   keypad->keymap, input);  in stmpe_keypad_probe()
376 	if (!keypad->no_autorepeat)  in stmpe_keypad_probe()
379 	stmpe_keypad_fill_used_pins(keypad, rows, cols);  in stmpe_keypad_probe()
381 	keypad->input = input;  in stmpe_keypad_probe()
383 	error = stmpe_keypad_chip_init(keypad);  in stmpe_keypad_probe()
389 					  IRQF_ONESHOT, "stmpe-keypad", keypad);  in stmpe_keypad_probe()
402 	platform_set_drvdata(pdev, keypad);  in stmpe_keypad_probe()
409 	struct stmpe_keypad *keypad = platform_get_drvdata(pdev);  in stmpe_keypad_remove()  local
411 	stmpe_disable(keypad->stmpe, STMPE_BLOCK_KEYPAD);  in stmpe_keypad_remove()
415 	.driver.name	= "stmpe-keypad",
422 MODULE_DESCRIPTION("STMPExxxx keypad driver");