59 static int ezx_pcap_putget(struct pcap_chip *pcap, u32 *data)  in ezx_pcap_putget()  argument
70 	pcap->buf = *data;  in ezx_pcap_putget()
71 	t.tx_buf = (u8 *) &pcap->buf;  in ezx_pcap_putget()
72 	t.rx_buf = (u8 *) &pcap->buf;  in ezx_pcap_putget()
73 	status = spi_sync(pcap->spi, &m);  in ezx_pcap_putget()
76 		*data = pcap->buf;  in ezx_pcap_putget()
81 int ezx_pcap_write(struct pcap_chip *pcap, u8 reg_num, u32 value)  in ezx_pcap_write()  argument
85 	mutex_lock(&pcap->io_mutex);  in ezx_pcap_write()
89 	ret = ezx_pcap_putget(pcap, &value);  in ezx_pcap_write()
90 	mutex_unlock(&pcap->io_mutex);  in ezx_pcap_write()
96 int ezx_pcap_read(struct pcap_chip *pcap, u8 reg_num, u32 *value)  in ezx_pcap_read()  argument
100 	mutex_lock(&pcap->io_mutex);  in ezx_pcap_read()
104 	ret = ezx_pcap_putget(pcap, value);  in ezx_pcap_read()
105 	mutex_unlock(&pcap->io_mutex);  in ezx_pcap_read()
111 int ezx_pcap_set_bits(struct pcap_chip *pcap, u8 reg_num, u32 mask, u32 val)  in ezx_pcap_set_bits()  argument
117 	mutex_lock(&pcap->io_mutex);  in ezx_pcap_set_bits()
118 	ret = ezx_pcap_putget(pcap, &tmp);  in ezx_pcap_set_bits()
126 	ret = ezx_pcap_putget(pcap, &tmp);  in ezx_pcap_set_bits()
128 	mutex_unlock(&pcap->io_mutex);  in ezx_pcap_set_bits()
135 int irq_to_pcap(struct pcap_chip *pcap, int irq)  in irq_to_pcap()  argument
137 	return irq - pcap->irq_base;  in irq_to_pcap()
141 int pcap_to_irq(struct pcap_chip *pcap, int irq)  in pcap_to_irq()  argument
143 	return pcap->irq_base + irq;  in pcap_to_irq()
149 	struct pcap_chip *pcap = irq_data_get_irq_chip_data(d);  in pcap_mask_irq()  local
151 	pcap->msr |= 1 << irq_to_pcap(pcap, d->irq);  in pcap_mask_irq()
152 	queue_work(pcap->workqueue, &pcap->msr_work);  in pcap_mask_irq()
157 	struct pcap_chip *pcap = irq_data_get_irq_chip_data(d);  in pcap_unmask_irq()  local
159 	pcap->msr &= ~(1 << irq_to_pcap(pcap, d->irq));  in pcap_unmask_irq()
160 	queue_work(pcap->workqueue, &pcap->msr_work);  in pcap_unmask_irq()
172 	struct pcap_chip *pcap = container_of(work, struct pcap_chip, msr_work);  in pcap_msr_work()  local
174 	ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr);  in pcap_msr_work()
179 	struct pcap_chip *pcap = container_of(work, struct pcap_chip, isr_work);  in pcap_isr_work()  local
180 	struct pcap_platform_data *pdata = dev_get_platdata(&pcap->spi->dev);  in pcap_isr_work()
185 		ezx_pcap_read(pcap, PCAP_REG_MSR, &msr);  in pcap_isr_work()
186 		ezx_pcap_read(pcap, PCAP_REG_ISR, &isr);  in pcap_isr_work()
190 			ezx_pcap_read(pcap, PCAP_REG_INT_SEL, &int_sel);  in pcap_isr_work()
194 		ezx_pcap_write(pcap, PCAP_REG_MSR, isr | msr);  in pcap_isr_work()
195 		ezx_pcap_write(pcap, PCAP_REG_ISR, isr);  in pcap_isr_work()
199 		for (irq = pcap->irq_base; service; service >>= 1, irq++) {  in pcap_isr_work()
204 		ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr);  in pcap_isr_work()
210 	struct pcap_chip *pcap = irq_desc_get_handler_data(desc);  in pcap_irq_handler()  local
213 	queue_work(pcap->workqueue, &pcap->isr_work);  in pcap_irq_handler()
217 void pcap_set_ts_bits(struct pcap_chip *pcap, u32 bits)  in pcap_set_ts_bits()  argument
221 	mutex_lock(&pcap->adc_mutex);  in pcap_set_ts_bits()
222 	ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);  in pcap_set_ts_bits()
225 	ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);  in pcap_set_ts_bits()
226 	mutex_unlock(&pcap->adc_mutex);  in pcap_set_ts_bits()
230 static void pcap_disable_adc(struct pcap_chip *pcap)  in pcap_disable_adc()  argument
234 	ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);  in pcap_disable_adc()
236 	ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);  in pcap_disable_adc()
239 static void pcap_adc_trigger(struct pcap_chip *pcap)  in pcap_adc_trigger()  argument
244 	mutex_lock(&pcap->adc_mutex);  in pcap_adc_trigger()
245 	head = pcap->adc_head;  in pcap_adc_trigger()
246 	if (!pcap->adc_queue[head]) {  in pcap_adc_trigger()
248 		pcap_disable_adc(pcap);  in pcap_adc_trigger()
249 		mutex_unlock(&pcap->adc_mutex);  in pcap_adc_trigger()
253 	ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);  in pcap_adc_trigger()
255 	tmp |= pcap->adc_queue[head]->flags | PCAP_ADC_ADEN;  in pcap_adc_trigger()
257 	if (pcap->adc_queue[head]->bank == PCAP_ADC_BANK_1)  in pcap_adc_trigger()
260 	ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);  in pcap_adc_trigger()
261 	mutex_unlock(&pcap->adc_mutex);  in pcap_adc_trigger()
262 	ezx_pcap_write(pcap, PCAP_REG_ADR, PCAP_ADR_ASC);  in pcap_adc_trigger()
267 	struct pcap_chip *pcap = _pcap;  in pcap_adc_irq()  local
272 	mutex_lock(&pcap->adc_mutex);  in pcap_adc_irq()
273 	req = pcap->adc_queue[pcap->adc_head];  in pcap_adc_irq()
276 		mutex_unlock(&pcap->adc_mutex);  in pcap_adc_irq()
281 	ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp);  in pcap_adc_irq()
285 	ezx_pcap_write(pcap, PCAP_REG_ADC, tmp);  in pcap_adc_irq()
286 	ezx_pcap_read(pcap, PCAP_REG_ADR, &tmp);  in pcap_adc_irq()
290 	pcap->adc_queue[pcap->adc_head] = NULL;  in pcap_adc_irq()
291 	pcap->adc_head = (pcap->adc_head + 1) & (PCAP_ADC_MAXQ - 1);  in pcap_adc_irq()
292 	mutex_unlock(&pcap->adc_mutex);  in pcap_adc_irq()
299 	pcap_adc_trigger(pcap);  in pcap_adc_irq()
304 int pcap_adc_async(struct pcap_chip *pcap, u8 bank, u32 flags, u8 ch[],  in pcap_adc_async()  argument
321 	mutex_lock(&pcap->adc_mutex);  in pcap_adc_async()
322 	if (pcap->adc_queue[pcap->adc_tail]) {  in pcap_adc_async()
323 		mutex_unlock(&pcap->adc_mutex);  in pcap_adc_async()
327 	pcap->adc_queue[pcap->adc_tail] = req;  in pcap_adc_async()
328 	pcap->adc_tail = (pcap->adc_tail + 1) & (PCAP_ADC_MAXQ - 1);  in pcap_adc_async()
329 	mutex_unlock(&pcap->adc_mutex);  in pcap_adc_async()
332 	pcap_adc_trigger(pcap);  in pcap_adc_async()
347 int pcap_adc_sync(struct pcap_chip *pcap, u8 bank, u32 flags, u8 ch[],  in pcap_adc_sync()  argument
354 	ret = pcap_adc_async(pcap, bank, flags, ch, pcap_adc_sync_cb,  in pcap_adc_sync()
373 static int pcap_add_subdev(struct pcap_chip *pcap,  in pcap_add_subdev()  argument
383 	pdev->dev.parent = &pcap->spi->dev;  in pcap_add_subdev()
395 	struct pcap_chip *pcap = spi_get_drvdata(spi);  in ezx_pcap_remove()  local
402 	mutex_lock(&pcap->adc_mutex);  in ezx_pcap_remove()
404 		kfree(pcap->adc_queue[i]);  in ezx_pcap_remove()
405 	mutex_unlock(&pcap->adc_mutex);  in ezx_pcap_remove()
408 	for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++)  in ezx_pcap_remove()
411 	destroy_workqueue(pcap->workqueue);  in ezx_pcap_remove()
419 	struct pcap_chip *pcap;  in ezx_pcap_probe()  local
427 	pcap = devm_kzalloc(&spi->dev, sizeof(*pcap), GFP_KERNEL);  in ezx_pcap_probe()
428 	if (!pcap) {  in ezx_pcap_probe()
433 	mutex_init(&pcap->io_mutex);  in ezx_pcap_probe()
434 	mutex_init(&pcap->adc_mutex);  in ezx_pcap_probe()
435 	INIT_WORK(&pcap->isr_work, pcap_isr_work);  in ezx_pcap_probe()
436 	INIT_WORK(&pcap->msr_work, pcap_msr_work);  in ezx_pcap_probe()
437 	spi_set_drvdata(spi, pcap);  in ezx_pcap_probe()
446 	pcap->spi = spi;  in ezx_pcap_probe()
449 	pcap->irq_base = pdata->irq_base;  in ezx_pcap_probe()
450 	pcap->workqueue = create_singlethread_workqueue("pcapd");  in ezx_pcap_probe()
451 	if (!pcap->workqueue) {  in ezx_pcap_probe()
459 		ezx_pcap_write(pcap, PCAP_REG_INT_SEL,  in ezx_pcap_probe()
463 	for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++) {  in ezx_pcap_probe()
465 		irq_set_chip_data(i, pcap);  in ezx_pcap_probe()
470 	ezx_pcap_write(pcap, PCAP_REG_MSR, PCAP_MASK_ALL_INTERRUPT);  in ezx_pcap_probe()
471 	ezx_pcap_write(pcap, PCAP_REG_ISR, PCAP_CLEAR_INTERRUPT_REGISTER);  in ezx_pcap_probe()
472 	pcap->msr = PCAP_MASK_ALL_INTERRUPT;  in ezx_pcap_probe()
475 	irq_set_chained_handler_and_data(spi->irq, pcap_irq_handler, pcap);  in ezx_pcap_probe()
479 	adc_irq = pcap_to_irq(pcap, (pdata->config & PCAP_SECOND_PORT) ?  in ezx_pcap_probe()
483 				pcap);  in ezx_pcap_probe()
489 		ret = pcap_add_subdev(pcap, &pdata->subdevs[i]);  in ezx_pcap_probe()
496 		pdata->init(pcap);  in ezx_pcap_probe()
503 	for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++)  in ezx_pcap_probe()
506 	destroy_workqueue(pcap->workqueue);  in ezx_pcap_probe()