174 static int lm8323_write(struct lm8323_chip *lm, int len, ...)  in lm8323_write()  argument
183 		dev_err(&lm->client->dev, "tried to send %d bytes\n", len);  in lm8323_write()
197 	ret = i2c_master_send(lm->client, data, len);  in lm8323_write()
199 		ret = i2c_master_send(lm->client, data, len);  in lm8323_write()
201 		dev_err(&lm->client->dev, "sent %d bytes of %d total\n",  in lm8323_write()
211 static int lm8323_read(struct lm8323_chip *lm, u8 cmd, u8 *buf, int len)  in lm8323_read()  argument
219 	ret = i2c_master_send(lm->client, &cmd, 1);  in lm8323_read()
221 		ret = i2c_master_send(lm->client, &cmd, 1);  in lm8323_read()
223 		dev_err(&lm->client->dev, "sending read cmd 0x%02x failed\n",  in lm8323_read()
228 	ret = i2c_master_recv(lm->client, buf, len);  in lm8323_read()
230 		dev_err(&lm->client->dev, "wanted %d bytes, got %d\n",  in lm8323_read()
239 static void lm8323_set_active_time(struct lm8323_chip *lm, int time)  in lm8323_set_active_time()  argument
241 	lm8323_write(lm, 2, LM8323_CMD_SET_ACTIVE, time >> 2);  in lm8323_set_active_time()
258 static void process_keys(struct lm8323_chip *lm)  in process_keys()  argument
262 	int old_keys_down = lm->keys_down;  in process_keys()
270 	ret = lm8323_read(lm, LM8323_CMD_READ_FIFO, key_fifo, LM8323_FIFO_LEN);  in process_keys()
273 		dev_err(&lm->client->dev, "Failed reading fifo \n");  in process_keys()
281 		unsigned short keycode = lm->keymap[key];  in process_keys()
283 		dev_vdbg(&lm->client->dev, "key 0x%02x %s\n",  in process_keys()
286 		if (lm->kp_enabled) {  in process_keys()
287 			input_event(lm->idev, EV_MSC, MSC_SCAN, key);  in process_keys()
288 			input_report_key(lm->idev, keycode, isdown);  in process_keys()
289 			input_sync(lm->idev);  in process_keys()
293 			lm->keys_down++;  in process_keys()
295 			lm->keys_down--;  in process_keys()
303 	if (!old_keys_down && lm->keys_down)  in process_keys()
304 		lm8323_set_active_time(lm, 0);  in process_keys()
305 	if (old_keys_down && !lm->keys_down)  in process_keys()
306 		lm8323_set_active_time(lm, lm->active_time);  in process_keys()
309 static void lm8323_process_error(struct lm8323_chip *lm)  in lm8323_process_error()  argument
313 	if (lm8323_read(lm, LM8323_CMD_READ_ERR, &error, 1) == 1) {  in lm8323_process_error()
315 			dev_vdbg(&lm->client->dev, "fifo overflow!\n");  in lm8323_process_error()
317 			dev_vdbg(&lm->client->dev,  in lm8323_process_error()
320 			dev_vdbg(&lm->client->dev,  in lm8323_process_error()
323 			dev_vdbg(&lm->client->dev, "bad command parameter\n");  in lm8323_process_error()
327 static void lm8323_reset(struct lm8323_chip *lm)  in lm8323_reset()  argument
330 	lm8323_write(lm, 2, LM8323_CMD_RESET, 0xAA);  in lm8323_reset()
333 static int lm8323_configure(struct lm8323_chip *lm)  in lm8323_configure()  argument
335 	int keysize = (lm->size_x << 4) | lm->size_y;  in lm8323_configure()
337 	int debounce = lm->debounce_time >> 2;  in lm8323_configure()
338 	int active = lm->active_time >> 2;  in lm8323_configure()
347 	lm8323_write(lm, 2, LM8323_CMD_WRITE_CFG, 0);  in lm8323_configure()
348 	lm8323_write(lm, 2, LM8323_CMD_WRITE_CLOCK, clock);  in lm8323_configure()
349 	lm8323_write(lm, 2, LM8323_CMD_SET_KEY_SIZE, keysize);  in lm8323_configure()
350 	lm8323_set_active_time(lm, lm->active_time);  in lm8323_configure()
351 	lm8323_write(lm, 2, LM8323_CMD_SET_DEBOUNCE, debounce);  in lm8323_configure()
352 	lm8323_write(lm, 3, LM8323_CMD_WRITE_PORT_STATE, 0xff, 0xff);  in lm8323_configure()
353 	lm8323_write(lm, 3, LM8323_CMD_WRITE_PORT_SEL, 0, 0);  in lm8323_configure()
378 	struct lm8323_chip *lm = _lm;  in lm8323_irq()  local
382 	mutex_lock(&lm->lock);  in lm8323_irq()
384 	while ((lm8323_read(lm, LM8323_CMD_READ_INT, &ints, 1) == 1) && ints) {  in lm8323_irq()
386 			process_keys(lm);  in lm8323_irq()
389 			dev_vdbg(&lm->client->dev, "rotator fired\n");  in lm8323_irq()
392 			dev_vdbg(&lm->client->dev, "error!\n");  in lm8323_irq()
393 			lm8323_process_error(lm);  in lm8323_irq()
396 			dev_err(&lm->client->dev, "chip lost config; "  in lm8323_irq()
398 			lm8323_configure(lm);  in lm8323_irq()
402 				dev_vdbg(&lm->client->dev,  in lm8323_irq()
404 				pwm_done(&lm->pwm[i]);  in lm8323_irq()
409 	mutex_unlock(&lm->lock);  in lm8323_irq()
417 static int lm8323_read_id(struct lm8323_chip *lm, u8 *buf)  in lm8323_read_id()  argument
421 	bytes = lm8323_read(lm, LM8323_CMD_READ_ID, buf, 2);  in lm8323_read_id()
513 	struct lm8323_chip *lm = pwm->chip;  in lm8323_pwm_set_brightness()  local
525 		mutex_lock(&lm->lock);  in lm8323_pwm_set_brightness()
526 		if (likely(!lm->pm_suspend))  in lm8323_pwm_set_brightness()
530 		mutex_unlock(&lm->lock);  in lm8323_pwm_set_brightness()
567 static int init_pwm(struct lm8323_chip *lm, int id, struct device *dev,  in init_pwm()  argument
574 	pwm = &lm->pwm[id - 1];  in init_pwm()
584 	pwm->chip = lm;  in init_pwm()
605 	struct lm8323_chip *lm = dev_get_drvdata(dev);  in lm8323_show_disable()  local
607 	return sprintf(buf, "%u\n", !lm->kp_enabled);  in lm8323_show_disable()
614 	struct lm8323_chip *lm = dev_get_drvdata(dev);  in lm8323_set_disable()  local
622 	mutex_lock(&lm->lock);  in lm8323_set_disable()
623 	lm->kp_enabled = !i;  in lm8323_set_disable()
624 	mutex_unlock(&lm->lock);  in lm8323_set_disable()
635 	struct lm8323_chip *lm;  in lm8323_probe()  local
658 	lm = kzalloc(sizeof *lm, GFP_KERNEL);  in lm8323_probe()
660 	if (!lm || !idev) {  in lm8323_probe()
665 	lm->client = client;  in lm8323_probe()
666 	lm->idev = idev;  in lm8323_probe()
667 	mutex_init(&lm->lock);  in lm8323_probe()
669 	lm->size_x = pdata->size_x;  in lm8323_probe()
670 	lm->size_y = pdata->size_y;  in lm8323_probe()
672 		 lm->size_x, lm->size_y);  in lm8323_probe()
674 	lm->debounce_time = pdata->debounce_time;  in lm8323_probe()
675 	lm->active_time = pdata->active_time;  in lm8323_probe()
677 	lm8323_reset(lm);  in lm8323_probe()
682 	while (lm8323_read(lm, LM8323_CMD_READ_INT, data, 1) == 1) {  in lm8323_probe()
695 	lm8323_configure(lm);  in lm8323_probe()
698 	if (lm8323_read_id(lm, data) != 0) {  in lm8323_probe()
705 		err = init_pwm(lm, pwm + 1, &client->dev,  in lm8323_probe()
711 	lm->kp_enabled = true;  in lm8323_probe()
717 	snprintf(lm->phys, sizeof(lm->phys),  in lm8323_probe()
719 	idev->phys = lm->phys;  in lm8323_probe()
725 		lm->keymap[i] = pdata->keymap[i];  in lm8323_probe()
739 			  IRQF_TRIGGER_LOW|IRQF_ONESHOT, "lm8323", lm);  in lm8323_probe()
745 	i2c_set_clientdata(client, lm);  in lm8323_probe()
759 		if (lm->pwm[pwm].enabled)  in lm8323_probe()
760 			led_classdev_unregister(&lm->pwm[pwm].cdev);  in lm8323_probe()
763 	kfree(lm);  in lm8323_probe()
769 	struct lm8323_chip *lm = i2c_get_clientdata(client);  in lm8323_remove()  local
773 	free_irq(client->irq, lm);  in lm8323_remove()
775 	input_unregister_device(lm->idev);  in lm8323_remove()
777 	device_remove_file(&lm->client->dev, &dev_attr_disable_kp);  in lm8323_remove()
780 		if (lm->pwm[i].enabled)  in lm8323_remove()
781 			led_classdev_unregister(&lm->pwm[i].cdev);  in lm8323_remove()
783 	kfree(lm);  in lm8323_remove()
796 	struct lm8323_chip *lm = i2c_get_clientdata(client);  in lm8323_suspend()  local
802 	mutex_lock(&lm->lock);  in lm8323_suspend()
803 	lm->pm_suspend = true;  in lm8323_suspend()
804 	mutex_unlock(&lm->lock);  in lm8323_suspend()
807 		if (lm->pwm[i].enabled)  in lm8323_suspend()
808 			led_classdev_suspend(&lm->pwm[i].cdev);  in lm8323_suspend()
816 	struct lm8323_chip *lm = i2c_get_clientdata(client);  in lm8323_resume()  local
819 	mutex_lock(&lm->lock);  in lm8323_resume()
820 	lm->pm_suspend = false;  in lm8323_resume()
821 	mutex_unlock(&lm->lock);  in lm8323_resume()
824 		if (lm->pwm[i].enabled)  in lm8323_resume()
825 			led_classdev_resume(&lm->pwm[i].cdev);  in lm8323_resume()