78 static int ttsp_read_block_data(struct cyttsp *ts, u8 command,  in ttsp_read_block_data()  argument
85 		error = ts->bus_ops->read(ts->dev, ts->xfer_buf, command,  in ttsp_read_block_data()
96 static int ttsp_write_block_data(struct cyttsp *ts, u8 command,  in ttsp_write_block_data()  argument
103 		error = ts->bus_ops->write(ts->dev, ts->xfer_buf, command,  in ttsp_write_block_data()
114 static int ttsp_send_command(struct cyttsp *ts, u8 cmd)  in ttsp_send_command()  argument
116 	return ttsp_write_block_data(ts, CY_REG_BASE, sizeof(cmd), &cmd);  in ttsp_send_command()
119 static int cyttsp_handshake(struct cyttsp *ts)  in cyttsp_handshake()  argument
121 	if (ts->use_hndshk)  in cyttsp_handshake()
122 		return ttsp_send_command(ts,  in cyttsp_handshake()
123 				ts->xy_data.hst_mode ^ CY_HNDSHK_BIT);  in cyttsp_handshake()
128 static int cyttsp_load_bl_regs(struct cyttsp *ts)  in cyttsp_load_bl_regs()  argument
130 	memset(&ts->bl_data, 0, sizeof(ts->bl_data));  in cyttsp_load_bl_regs()
131 	ts->bl_data.bl_status = 0x10;  in cyttsp_load_bl_regs()
133 	return ttsp_read_block_data(ts, CY_REG_BASE,  in cyttsp_load_bl_regs()
134 				    sizeof(ts->bl_data), &ts->bl_data);  in cyttsp_load_bl_regs()
137 static int cyttsp_exit_bl_mode(struct cyttsp *ts)  in cyttsp_exit_bl_mode()  argument
143 	if (ts->bl_keys)  in cyttsp_exit_bl_mode()
145 			ts->bl_keys, CY_NUM_BL_KEYS);  in cyttsp_exit_bl_mode()
147 	error = ttsp_write_block_data(ts, CY_REG_BASE,  in cyttsp_exit_bl_mode()
155 	error = cyttsp_load_bl_regs(ts);  in cyttsp_exit_bl_mode()
159 	if (GET_BOOTLOADERMODE(ts->bl_data.bl_status))  in cyttsp_exit_bl_mode()
165 static int cyttsp_set_operational_mode(struct cyttsp *ts)  in cyttsp_set_operational_mode()  argument
169 	error = ttsp_send_command(ts, CY_OPERATE_MODE);  in cyttsp_set_operational_mode()
174 	error = ttsp_read_block_data(ts, CY_REG_BASE,  in cyttsp_set_operational_mode()
175 				     sizeof(ts->xy_data), &ts->xy_data);  in cyttsp_set_operational_mode()
179 	error = cyttsp_handshake(ts);  in cyttsp_set_operational_mode()
183 	return ts->xy_data.act_dist == CY_ACT_DIST_DFLT ? -EIO : 0;  in cyttsp_set_operational_mode()
186 static int cyttsp_set_sysinfo_mode(struct cyttsp *ts)  in cyttsp_set_sysinfo_mode()  argument
190 	memset(&ts->sysinfo_data, 0, sizeof(ts->sysinfo_data));  in cyttsp_set_sysinfo_mode()
193 	error = ttsp_send_command(ts, CY_SYSINFO_MODE);  in cyttsp_set_sysinfo_mode()
199 	error = ttsp_read_block_data(ts, CY_REG_BASE, sizeof(ts->sysinfo_data),  in cyttsp_set_sysinfo_mode()
200 				      &ts->sysinfo_data);  in cyttsp_set_sysinfo_mode()
204 	error = cyttsp_handshake(ts);  in cyttsp_set_sysinfo_mode()
208 	if (!ts->sysinfo_data.tts_verh && !ts->sysinfo_data.tts_verl)  in cyttsp_set_sysinfo_mode()
214 static int cyttsp_set_sysinfo_regs(struct cyttsp *ts)  in cyttsp_set_sysinfo_regs()  argument
218 	if (ts->act_intrvl != CY_ACT_INTRVL_DFLT ||  in cyttsp_set_sysinfo_regs()
219 	    ts->tch_tmout != CY_TCH_TMOUT_DFLT ||  in cyttsp_set_sysinfo_regs()
220 	    ts->lp_intrvl != CY_LP_INTRVL_DFLT) {  in cyttsp_set_sysinfo_regs()
223 			ts->act_intrvl,  in cyttsp_set_sysinfo_regs()
224 			ts->tch_tmout,  in cyttsp_set_sysinfo_regs()
225 			ts->lp_intrvl  in cyttsp_set_sysinfo_regs()
229 		retval = ttsp_write_block_data(ts, CY_REG_ACT_INTRVL,  in cyttsp_set_sysinfo_regs()
237 static void cyttsp_hard_reset(struct cyttsp *ts)  in cyttsp_hard_reset()  argument
239 	if (ts->reset_gpio) {  in cyttsp_hard_reset()
246 		gpiod_set_value_cansleep(ts->reset_gpio, 1);  in cyttsp_hard_reset()
248 		gpiod_set_value_cansleep(ts->reset_gpio, 0);  in cyttsp_hard_reset()
253 static int cyttsp_soft_reset(struct cyttsp *ts)  in cyttsp_soft_reset()  argument
258 	reinit_completion(&ts->bl_ready);  in cyttsp_soft_reset()
259 	ts->state = CY_BL_STATE;  in cyttsp_soft_reset()
261 	enable_irq(ts->irq);  in cyttsp_soft_reset()
263 	retval = ttsp_send_command(ts, CY_SOFT_RESET_MODE);  in cyttsp_soft_reset()
265 		dev_err(ts->dev, "failed to send soft reset\n");  in cyttsp_soft_reset()
269 	if (!wait_for_completion_timeout(&ts->bl_ready,  in cyttsp_soft_reset()
271 		dev_err(ts->dev, "timeout waiting for soft reset\n");  in cyttsp_soft_reset()
276 	ts->state = CY_IDLE_STATE;  in cyttsp_soft_reset()
277 	disable_irq(ts->irq);  in cyttsp_soft_reset()
281 static int cyttsp_act_dist_setup(struct cyttsp *ts)  in cyttsp_act_dist_setup()  argument
283 	u8 act_dist_setup = ts->act_dist;  in cyttsp_act_dist_setup()
286 	return ttsp_write_block_data(ts, CY_REG_ACT_DIST,  in cyttsp_act_dist_setup()
315 static void cyttsp_report_tchdata(struct cyttsp *ts)  in cyttsp_report_tchdata()  argument
317 	struct cyttsp_xydata *xy_data = &ts->xy_data;  in cyttsp_report_tchdata()
318 	struct input_dev *input = ts->input;  in cyttsp_report_tchdata()
328 		dev_dbg(ts->dev, "%s: Large area detected\n", __func__);  in cyttsp_report_tchdata()
332 		dev_dbg(ts->dev, "%s: Num touch error detected\n", __func__);  in cyttsp_report_tchdata()
336 		dev_dbg(ts->dev, "%s: Invalid buffer detected\n", __func__);  in cyttsp_report_tchdata()
368 	struct cyttsp *ts = handle;  in cyttsp_irq()  local
371 	if (unlikely(ts->state == CY_BL_STATE)) {  in cyttsp_irq()
372 		complete(&ts->bl_ready);  in cyttsp_irq()
377 	error = ttsp_read_block_data(ts, CY_REG_BASE,  in cyttsp_irq()
378 				 sizeof(struct cyttsp_xydata), &ts->xy_data);  in cyttsp_irq()
383 	error = cyttsp_handshake(ts);  in cyttsp_irq()
387 	if (unlikely(ts->state == CY_IDLE_STATE))  in cyttsp_irq()
390 	if (GET_BOOTLOADERMODE(ts->xy_data.tt_mode)) {  in cyttsp_irq()
395 		error = cyttsp_exit_bl_mode(ts);  in cyttsp_irq()
397 			dev_err(ts->dev,  in cyttsp_irq()
400 			ts->state = CY_IDLE_STATE;  in cyttsp_irq()
403 		cyttsp_report_tchdata(ts);  in cyttsp_irq()
410 static int cyttsp_power_on(struct cyttsp *ts)  in cyttsp_power_on()  argument
414 	error = cyttsp_soft_reset(ts);  in cyttsp_power_on()
418 	error = cyttsp_load_bl_regs(ts);  in cyttsp_power_on()
422 	if (GET_BOOTLOADERMODE(ts->bl_data.bl_status) &&  in cyttsp_power_on()
423 	    IS_VALID_APP(ts->bl_data.bl_status)) {  in cyttsp_power_on()
424 		error = cyttsp_exit_bl_mode(ts);  in cyttsp_power_on()
426 			dev_err(ts->dev, "failed to exit bootloader mode\n");  in cyttsp_power_on()
431 	if (GET_HSTMODE(ts->bl_data.bl_file) != CY_OPERATE_MODE ||  in cyttsp_power_on()
432 	    IS_OPERATIONAL_ERR(ts->bl_data.bl_status)) {  in cyttsp_power_on()
436 	error = cyttsp_set_sysinfo_mode(ts);  in cyttsp_power_on()
440 	error = cyttsp_set_sysinfo_regs(ts);  in cyttsp_power_on()
444 	error = cyttsp_set_operational_mode(ts);  in cyttsp_power_on()
449 	error = cyttsp_act_dist_setup(ts);  in cyttsp_power_on()
453 	ts->state = CY_ACTIVE_STATE;  in cyttsp_power_on()
458 static int cyttsp_enable(struct cyttsp *ts)  in cyttsp_enable()  argument
468 	error = ttsp_read_block_data(ts, CY_REG_BASE,  in cyttsp_enable()
469 				     sizeof(ts->xy_data), &ts->xy_data);  in cyttsp_enable()
473 	if (GET_HSTMODE(ts->xy_data.hst_mode))  in cyttsp_enable()
476 	enable_irq(ts->irq);  in cyttsp_enable()
481 static int cyttsp_disable(struct cyttsp *ts)  in cyttsp_disable()  argument
485 	error = ttsp_send_command(ts, CY_LOW_POWER_MODE);  in cyttsp_disable()
489 	disable_irq(ts->irq);  in cyttsp_disable()
496 	struct cyttsp *ts = dev_get_drvdata(dev);  in cyttsp_suspend()  local
499 	mutex_lock(&ts->input->mutex);  in cyttsp_suspend()
501 	if (input_device_enabled(ts->input)) {  in cyttsp_suspend()
502 		retval = cyttsp_disable(ts);  in cyttsp_suspend()
504 			ts->suspended = true;  in cyttsp_suspend()
507 	mutex_unlock(&ts->input->mutex);  in cyttsp_suspend()
514 	struct cyttsp *ts = dev_get_drvdata(dev);  in cyttsp_resume()  local
516 	mutex_lock(&ts->input->mutex);  in cyttsp_resume()
518 	if (input_device_enabled(ts->input))  in cyttsp_resume()
519 		cyttsp_enable(ts);  in cyttsp_resume()
521 	ts->suspended = false;  in cyttsp_resume()
523 	mutex_unlock(&ts->input->mutex);  in cyttsp_resume()
532 	struct cyttsp *ts = input_get_drvdata(dev);  in cyttsp_open()  local
535 	if (!ts->suspended)  in cyttsp_open()
536 		retval = cyttsp_enable(ts);  in cyttsp_open()
543 	struct cyttsp *ts = input_get_drvdata(dev);  in cyttsp_close()  local
545 	if (!ts->suspended)  in cyttsp_close()
546 		cyttsp_disable(ts);  in cyttsp_close()
549 static int cyttsp_parse_properties(struct cyttsp *ts)  in cyttsp_parse_properties()  argument
551 	struct device *dev = ts->dev;  in cyttsp_parse_properties()
555 	ts->bl_keys = devm_kzalloc(dev, CY_NUM_BL_KEYS, GFP_KERNEL);  in cyttsp_parse_properties()
556 	if (!ts->bl_keys)  in cyttsp_parse_properties()
560 	ts->use_hndshk = false;  in cyttsp_parse_properties()
561 	ts->act_dist = CY_ACT_DIST_DFLT;  in cyttsp_parse_properties()
562 	ts->act_intrvl = CY_ACT_INTRVL_DFLT;  in cyttsp_parse_properties()
563 	ts->tch_tmout = CY_TCH_TMOUT_DFLT;  in cyttsp_parse_properties()
564 	ts->lp_intrvl = CY_LP_INTRVL_DFLT;  in cyttsp_parse_properties()
567 					    ts->bl_keys, CY_NUM_BL_KEYS);  in cyttsp_parse_properties()
574 	ts->use_hndshk = device_property_present(dev, "use-handshake");  in cyttsp_parse_properties()
582 		ts->act_dist &= ~CY_ACT_DIST_MASK;  in cyttsp_parse_properties()
583 		ts->act_dist |= dt_value;  in cyttsp_parse_properties()
592 		ts->act_intrvl = dt_value;  in cyttsp_parse_properties()
602 		ts->lp_intrvl = dt_value / 10;  in cyttsp_parse_properties()
612 		ts->tch_tmout = dt_value / 10;  in cyttsp_parse_properties()
620 	struct cyttsp *ts = _ts;  in cyttsp_disable_regulators()  local
622 	regulator_bulk_disable(ARRAY_SIZE(ts->regulators),  in cyttsp_disable_regulators()
623 			       ts->regulators);  in cyttsp_disable_regulators()
629 	struct cyttsp *ts;  in cyttsp_probe()  local
633 	ts = devm_kzalloc(dev, sizeof(*ts) + xfer_buf_size, GFP_KERNEL);  in cyttsp_probe()
634 	if (!ts)  in cyttsp_probe()
641 	ts->dev = dev;  in cyttsp_probe()
642 	ts->input = input_dev;  in cyttsp_probe()
643 	ts->bus_ops = bus_ops;  in cyttsp_probe()
644 	ts->irq = irq;  in cyttsp_probe()
650 	ts->regulators[0].supply = "vcpin";  in cyttsp_probe()
651 	ts->regulators[1].supply = "vdd";  in cyttsp_probe()
652 	error = devm_regulator_bulk_get(dev, ARRAY_SIZE(ts->regulators),  in cyttsp_probe()
653 					ts->regulators);  in cyttsp_probe()
659 	error = regulator_bulk_enable(ARRAY_SIZE(ts->regulators),  in cyttsp_probe()
660 				      ts->regulators);  in cyttsp_probe()
666 	error = devm_add_action_or_reset(dev, cyttsp_disable_regulators, ts);  in cyttsp_probe()
672 	ts->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in cyttsp_probe()
673 	if (IS_ERR(ts->reset_gpio)) {  in cyttsp_probe()
674 		error = PTR_ERR(ts->reset_gpio);  in cyttsp_probe()
679 	error = cyttsp_parse_properties(ts);  in cyttsp_probe()
683 	init_completion(&ts->bl_ready);  in cyttsp_probe()
687 	input_dev->dev.parent = ts->dev;  in cyttsp_probe()
692 	input_set_drvdata(input_dev, ts);  in cyttsp_probe()
707 	error = devm_request_threaded_irq(dev, ts->irq, NULL, cyttsp_irq,  in cyttsp_probe()
709 					  "cyttsp", ts);  in cyttsp_probe()
711 		dev_err(ts->dev, "failed to request IRQ %d, err: %d\n",  in cyttsp_probe()
712 			ts->irq, error);  in cyttsp_probe()
716 	cyttsp_hard_reset(ts);  in cyttsp_probe()
718 	error = cyttsp_power_on(ts);  in cyttsp_probe()
724 		dev_err(ts->dev, "failed to register input device: %d\n",  in cyttsp_probe()
729 	return ts;  in cyttsp_probe()