8  * TC35893 MFD Keypad Controller driver
21 /* Maximum supported keypad matrix row/columns size */
25 /* keypad related Constants */
73  * struct tc3589x_keypad_platform_data - platform specific keypad data
80  * @enable_wakeup:      specifies if keypad event can wake up system from sleep
95  * struct tc_keypad - data structure used by keypad driver
98  * @board:      keypad platform device
102  * @keypad_stopped: holds keypad status
114 static int tc3589x_keypad_init_key_hardware(struct tc_keypad *keypad)  in tc3589x_keypad_init_key_hardware()  argument
117 	struct tc3589x *tc3589x = keypad->tc3589x;  in tc3589x_keypad_init_key_hardware()
118 	const struct tc3589x_keypad_platform_data *board = keypad->board;  in tc3589x_keypad_init_key_hardware()
151 	/* Start of initialise keypad GPIOs */  in tc3589x_keypad_init_key_hardware()
191 	struct tc_keypad *keypad = dev;  in tc3589x_keypad_irq()  local
192 	struct tc3589x *tc3589x = keypad->tc3589x;  in tc3589x_keypad_irq()
211 		input_event(keypad->input, EV_MSC, MSC_SCAN, code);  in tc3589x_keypad_irq()
212 		input_report_key(keypad->input, keypad->keymap[code], !up);  in tc3589x_keypad_irq()
213 		input_sync(keypad->input);  in tc3589x_keypad_irq()
226 static int tc3589x_keypad_enable(struct tc_keypad *keypad)  in tc3589x_keypad_enable()  argument
228 	struct tc3589x *tc3589x = keypad->tc3589x;  in tc3589x_keypad_enable()
231 	/* pull the keypad module out of reset */  in tc3589x_keypad_enable()
241 	/* enable the keypad clock */  in tc3589x_keypad_enable()
257 	keypad->keypad_stopped = false;  in tc3589x_keypad_enable()
262 static int tc3589x_keypad_disable(struct tc_keypad *keypad)  in tc3589x_keypad_disable()  argument
264 	struct tc3589x *tc3589x = keypad->tc3589x;  in tc3589x_keypad_disable()
279 	/* disable the keypad module */  in tc3589x_keypad_disable()
284 	/* put the keypad module into reset */  in tc3589x_keypad_disable()
287 	keypad->keypad_stopped = true;  in tc3589x_keypad_disable()
295 	struct tc_keypad *keypad = input_get_drvdata(input);  in tc3589x_keypad_open()  local
297 	/* enable the keypad module */  in tc3589x_keypad_open()
298 	error = tc3589x_keypad_enable(keypad);  in tc3589x_keypad_open()
300 		dev_err(&input->dev, "failed to enable keypad module\n");  in tc3589x_keypad_open()
304 	error = tc3589x_keypad_init_key_hardware(keypad);  in tc3589x_keypad_open()
306 		dev_err(&input->dev, "failed to configure keypad module\n");  in tc3589x_keypad_open()
315 	struct tc_keypad *keypad = input_get_drvdata(input);  in tc3589x_keypad_close()  local
317 	/* disable the keypad module */  in tc3589x_keypad_close()
318 	tc3589x_keypad_disable(keypad);  in tc3589x_keypad_close()
337 	of_property_read_u32(np, "keypad,num-columns", &cols);  in tc3589x_keypad_of_probe()
338 	of_property_read_u32(np, "keypad,num-rows", &rows);  in tc3589x_keypad_of_probe()
344 			"keypad columns/rows not properly specified (%ux%u)\n",  in tc3589x_keypad_of_probe()
377 	struct tc_keypad *keypad;  in tc3589x_keypad_probe()  local
384 		dev_err(&pdev->dev, "invalid keypad platform data\n");  in tc3589x_keypad_probe()
392 	keypad = devm_kzalloc(&pdev->dev, sizeof(struct tc_keypad),  in tc3589x_keypad_probe()
394 	if (!keypad)  in tc3589x_keypad_probe()
403 	keypad->board = plat;  in tc3589x_keypad_probe()
404 	keypad->input = input;  in tc3589x_keypad_probe()
405 	keypad->tc3589x = tc3589x;  in tc3589x_keypad_probe()
422 	keypad->keymap = input->keycode;  in tc3589x_keypad_probe()
428 	input_set_drvdata(input, keypad);  in tc3589x_keypad_probe()
430 	tc3589x_keypad_disable(keypad);  in tc3589x_keypad_probe()
435 					  "tc3589x-keypad", keypad);  in tc3589x_keypad_probe()
449 	/* let platform decide if keypad is a wakeup source or not */  in tc3589x_keypad_probe()
453 	platform_set_drvdata(pdev, keypad);  in tc3589x_keypad_probe()
462 	struct tc_keypad *keypad = platform_get_drvdata(pdev);  in tc3589x_keypad_suspend()  local
465 	/* keypad is already off; we do nothing */  in tc3589x_keypad_suspend()
466 	if (keypad->keypad_stopped)  in tc3589x_keypad_suspend()
471 		tc3589x_keypad_disable(keypad);  in tc3589x_keypad_suspend()
481 	struct tc_keypad *keypad = platform_get_drvdata(pdev);  in tc3589x_keypad_resume()  local
484 	if (!keypad->keypad_stopped)  in tc3589x_keypad_resume()
489 		tc3589x_keypad_enable(keypad);  in tc3589x_keypad_resume()
502 		.name	= "tc3589x-keypad",
511 MODULE_DESCRIPTION("TC35893 Keypad Driver");
512 MODULE_ALIAS("platform:tc3589x-keypad");