9  * TC35893 MFD Keypad Controller driver
22 /* Maximum supported keypad matrix row/columns size */
26 /* keypad related Constants */
74  * struct tc35893_keypad_platform_data - platform specific keypad data
81  * @enable_wakeup:      specifies if keypad event can wake up system from sleep
96  * struct tc_keypad - data structure used by keypad driver
99  * @board:      keypad platform device
103  * @keypad_stopped: holds keypad status
115 static int tc3589x_keypad_init_key_hardware(struct tc_keypad *keypad)  in tc3589x_keypad_init_key_hardware()  argument
118 	struct tc3589x *tc3589x = keypad->tc3589x;  in tc3589x_keypad_init_key_hardware()
119 	const struct tc3589x_keypad_platform_data *board = keypad->board;  in tc3589x_keypad_init_key_hardware()
152 	/* Start of initialise keypad GPIOs */  in tc3589x_keypad_init_key_hardware()
192 	struct tc_keypad *keypad = dev;  in tc3589x_keypad_irq()  local
193 	struct tc3589x *tc3589x = keypad->tc3589x;  in tc3589x_keypad_irq()
212 		input_event(keypad->input, EV_MSC, MSC_SCAN, code);  in tc3589x_keypad_irq()
213 		input_report_key(keypad->input, keypad->keymap[code], !up);  in tc3589x_keypad_irq()
214 		input_sync(keypad->input);  in tc3589x_keypad_irq()
227 static int tc3589x_keypad_enable(struct tc_keypad *keypad)  in tc3589x_keypad_enable()  argument
229 	struct tc3589x *tc3589x = keypad->tc3589x;  in tc3589x_keypad_enable()
232 	/* pull the keypad module out of reset */  in tc3589x_keypad_enable()
242 	/* enable the keypad clock */  in tc3589x_keypad_enable()
258 	keypad->keypad_stopped = false;  in tc3589x_keypad_enable()
263 static int tc3589x_keypad_disable(struct tc_keypad *keypad)  in tc3589x_keypad_disable()  argument
265 	struct tc3589x *tc3589x = keypad->tc3589x;  in tc3589x_keypad_disable()
280 	/* disable the keypad module */  in tc3589x_keypad_disable()
285 	/* put the keypad module into reset */  in tc3589x_keypad_disable()
288 	keypad->keypad_stopped = true;  in tc3589x_keypad_disable()
296 	struct tc_keypad *keypad = input_get_drvdata(input);  in tc3589x_keypad_open()  local
298 	/* enable the keypad module */  in tc3589x_keypad_open()
299 	error = tc3589x_keypad_enable(keypad);  in tc3589x_keypad_open()
301 		dev_err(&input->dev, "failed to enable keypad module\n");  in tc3589x_keypad_open()
305 	error = tc3589x_keypad_init_key_hardware(keypad);  in tc3589x_keypad_open()
307 		dev_err(&input->dev, "failed to configure keypad module\n");  in tc3589x_keypad_open()
316 	struct tc_keypad *keypad = input_get_drvdata(input);  in tc3589x_keypad_close()  local
318 	/* disable the keypad module */  in tc3589x_keypad_close()
319 	tc3589x_keypad_disable(keypad);  in tc3589x_keypad_close()
338 	of_property_read_u32(np, "keypad,num-columns", &cols);  in tc3589x_keypad_of_probe()
339 	of_property_read_u32(np, "keypad,num-rows", &rows);  in tc3589x_keypad_of_probe()
345 			"keypad columns/rows not properly specified (%ux%u)\n",  in tc3589x_keypad_of_probe()
378 	struct tc_keypad *keypad;  in tc3589x_keypad_probe()  local
385 		dev_err(&pdev->dev, "invalid keypad platform data\n");  in tc3589x_keypad_probe()
393 	keypad = devm_kzalloc(&pdev->dev, sizeof(struct tc_keypad),  in tc3589x_keypad_probe()
395 	if (!keypad)  in tc3589x_keypad_probe()
404 	keypad->board = plat;  in tc3589x_keypad_probe()
405 	keypad->input = input;  in tc3589x_keypad_probe()
406 	keypad->tc3589x = tc3589x;  in tc3589x_keypad_probe()
423 	keypad->keymap = input->keycode;  in tc3589x_keypad_probe()
429 	input_set_drvdata(input, keypad);  in tc3589x_keypad_probe()
431 	tc3589x_keypad_disable(keypad);  in tc3589x_keypad_probe()
436 					  "tc3589x-keypad", keypad);  in tc3589x_keypad_probe()
450 	/* let platform decide if keypad is a wakeup source or not */  in tc3589x_keypad_probe()
454 	platform_set_drvdata(pdev, keypad);  in tc3589x_keypad_probe()
463 	struct tc_keypad *keypad = platform_get_drvdata(pdev);  in tc3589x_keypad_suspend()  local
466 	/* keypad is already off; we do nothing */  in tc3589x_keypad_suspend()
467 	if (keypad->keypad_stopped)  in tc3589x_keypad_suspend()
472 		tc3589x_keypad_disable(keypad);  in tc3589x_keypad_suspend()
482 	struct tc_keypad *keypad = platform_get_drvdata(pdev);  in tc3589x_keypad_resume()  local
485 	if (!keypad->keypad_stopped)  in tc3589x_keypad_resume()
490 		tc3589x_keypad_enable(keypad);  in tc3589x_keypad_resume()
503 		.name	= "tc3589x-keypad",
512 MODULE_DESCRIPTION("TC35893 Keypad Driver");
513 MODULE_ALIAS("platform:tc3589x-keypad");