Lines Matching full:pcap
14 #include <linux/mfd/ezx-pcap.h>
50 static int ezx_pcap_putget(struct pcap_chip *pcap, u32 *data) in ezx_pcap_putget() argument
61 pcap->buf = *data; in ezx_pcap_putget()
62 t.tx_buf = (u8 *) &pcap->buf; in ezx_pcap_putget()
63 t.rx_buf = (u8 *) &pcap->buf; in ezx_pcap_putget()
64 status = spi_sync(pcap->spi, &m); in ezx_pcap_putget()
67 *data = pcap->buf; in ezx_pcap_putget()
72 int ezx_pcap_write(struct pcap_chip *pcap, u8 reg_num, u32 value) in ezx_pcap_write() argument
77 spin_lock_irqsave(&pcap->io_lock, flags); in ezx_pcap_write()
81 ret = ezx_pcap_putget(pcap, &value); in ezx_pcap_write()
82 spin_unlock_irqrestore(&pcap->io_lock, flags); in ezx_pcap_write()
88 int ezx_pcap_read(struct pcap_chip *pcap, u8 reg_num, u32 *value) in ezx_pcap_read() argument
93 spin_lock_irqsave(&pcap->io_lock, flags); in ezx_pcap_read()
97 ret = ezx_pcap_putget(pcap, value); in ezx_pcap_read()
98 spin_unlock_irqrestore(&pcap->io_lock, flags); in ezx_pcap_read()
104 int ezx_pcap_set_bits(struct pcap_chip *pcap, u8 reg_num, u32 mask, u32 val) in ezx_pcap_set_bits() argument
111 spin_lock_irqsave(&pcap->io_lock, flags); in ezx_pcap_set_bits()
112 ret = ezx_pcap_putget(pcap, &tmp); in ezx_pcap_set_bits()
120 ret = ezx_pcap_putget(pcap, &tmp); in ezx_pcap_set_bits()
122 spin_unlock_irqrestore(&pcap->io_lock, flags); in ezx_pcap_set_bits()
129 int irq_to_pcap(struct pcap_chip *pcap, int irq) in irq_to_pcap() argument
131 return irq - pcap->irq_base; in irq_to_pcap()
135 int pcap_to_irq(struct pcap_chip *pcap, int irq) in pcap_to_irq() argument
137 return pcap->irq_base + irq; in pcap_to_irq()
143 struct pcap_chip *pcap = irq_data_get_irq_chip_data(d); in pcap_mask_irq() local
145 pcap->msr |= 1 << irq_to_pcap(pcap, d->irq); in pcap_mask_irq()
146 queue_work(pcap->workqueue, &pcap->msr_work); in pcap_mask_irq()
151 struct pcap_chip *pcap = irq_data_get_irq_chip_data(d); in pcap_unmask_irq() local
153 pcap->msr &= ~(1 << irq_to_pcap(pcap, d->irq)); in pcap_unmask_irq()
154 queue_work(pcap->workqueue, &pcap->msr_work); in pcap_unmask_irq()
158 .name = "pcap",
166 struct pcap_chip *pcap = container_of(work, struct pcap_chip, msr_work); in pcap_msr_work() local
168 ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr); in pcap_msr_work()
173 struct pcap_chip *pcap = container_of(work, struct pcap_chip, isr_work); in pcap_isr_work() local
174 struct pcap_platform_data *pdata = dev_get_platdata(&pcap->spi->dev); in pcap_isr_work()
179 ezx_pcap_read(pcap, PCAP_REG_MSR, &msr); in pcap_isr_work()
180 ezx_pcap_read(pcap, PCAP_REG_ISR, &isr); in pcap_isr_work()
184 ezx_pcap_read(pcap, PCAP_REG_INT_SEL, &int_sel); in pcap_isr_work()
188 ezx_pcap_write(pcap, PCAP_REG_MSR, isr | msr); in pcap_isr_work()
189 ezx_pcap_write(pcap, PCAP_REG_ISR, isr); in pcap_isr_work()
192 for (irq = pcap->irq_base; service; service >>= 1, irq++) { in pcap_isr_work()
196 ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr); in pcap_isr_work()
202 struct pcap_chip *pcap = irq_desc_get_handler_data(desc); in pcap_irq_handler() local
205 queue_work(pcap->workqueue, &pcap->isr_work); in pcap_irq_handler()
209 void pcap_set_ts_bits(struct pcap_chip *pcap, u32 bits) in pcap_set_ts_bits() argument
214 spin_lock_irqsave(&pcap->adc_lock, flags); in pcap_set_ts_bits()
215 ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp); in pcap_set_ts_bits()
218 ezx_pcap_write(pcap, PCAP_REG_ADC, tmp); in pcap_set_ts_bits()
219 spin_unlock_irqrestore(&pcap->adc_lock, flags); in pcap_set_ts_bits()
223 static void pcap_disable_adc(struct pcap_chip *pcap) in pcap_disable_adc() argument
227 ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp); in pcap_disable_adc()
229 ezx_pcap_write(pcap, PCAP_REG_ADC, tmp); in pcap_disable_adc()
232 static void pcap_adc_trigger(struct pcap_chip *pcap) in pcap_adc_trigger() argument
238 spin_lock_irqsave(&pcap->adc_lock, flags); in pcap_adc_trigger()
239 head = pcap->adc_head; in pcap_adc_trigger()
240 if (!pcap->adc_queue[head]) { in pcap_adc_trigger()
242 pcap_disable_adc(pcap); in pcap_adc_trigger()
243 spin_unlock_irqrestore(&pcap->adc_lock, flags); in pcap_adc_trigger()
247 ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp); in pcap_adc_trigger()
249 tmp |= pcap->adc_queue[head]->flags | PCAP_ADC_ADEN; in pcap_adc_trigger()
251 if (pcap->adc_queue[head]->bank == PCAP_ADC_BANK_1) in pcap_adc_trigger()
254 ezx_pcap_write(pcap, PCAP_REG_ADC, tmp); in pcap_adc_trigger()
255 spin_unlock_irqrestore(&pcap->adc_lock, flags); in pcap_adc_trigger()
256 ezx_pcap_write(pcap, PCAP_REG_ADR, PCAP_ADR_ASC); in pcap_adc_trigger()
261 struct pcap_chip *pcap = _pcap; in pcap_adc_irq() local
266 spin_lock(&pcap->adc_lock); in pcap_adc_irq()
267 req = pcap->adc_queue[pcap->adc_head]; in pcap_adc_irq()
270 spin_unlock(&pcap->adc_lock); in pcap_adc_irq()
275 ezx_pcap_read(pcap, PCAP_REG_ADC, &tmp); in pcap_adc_irq()
279 ezx_pcap_write(pcap, PCAP_REG_ADC, tmp); in pcap_adc_irq()
280 ezx_pcap_read(pcap, PCAP_REG_ADR, &tmp); in pcap_adc_irq()
284 pcap->adc_queue[pcap->adc_head] = NULL; in pcap_adc_irq()
285 pcap->adc_head = (pcap->adc_head + 1) & (PCAP_ADC_MAXQ - 1); in pcap_adc_irq()
286 spin_unlock(&pcap->adc_lock); in pcap_adc_irq()
293 pcap_adc_trigger(pcap); in pcap_adc_irq()
298 int pcap_adc_async(struct pcap_chip *pcap, u8 bank, u32 flags, u8 ch[], in pcap_adc_async() argument
316 spin_lock_irqsave(&pcap->adc_lock, irq_flags); in pcap_adc_async()
317 if (pcap->adc_queue[pcap->adc_tail]) { in pcap_adc_async()
318 spin_unlock_irqrestore(&pcap->adc_lock, irq_flags); in pcap_adc_async()
322 pcap->adc_queue[pcap->adc_tail] = req; in pcap_adc_async()
323 pcap->adc_tail = (pcap->adc_tail + 1) & (PCAP_ADC_MAXQ - 1); in pcap_adc_async()
324 spin_unlock_irqrestore(&pcap->adc_lock, irq_flags); in pcap_adc_async()
327 pcap_adc_trigger(pcap); in pcap_adc_async()
340 static int pcap_add_subdev(struct pcap_chip *pcap, in pcap_add_subdev() argument
350 pdev->dev.parent = &pcap->spi->dev; in pcap_add_subdev()
362 struct pcap_chip *pcap = spi_get_drvdata(spi); in ezx_pcap_remove() local
370 spin_lock_irqsave(&pcap->adc_lock, flags); in ezx_pcap_remove()
372 kfree(pcap->adc_queue[i]); in ezx_pcap_remove()
373 spin_unlock_irqrestore(&pcap->adc_lock, flags); in ezx_pcap_remove()
376 for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++) in ezx_pcap_remove()
379 destroy_workqueue(pcap->workqueue); in ezx_pcap_remove()
385 struct pcap_chip *pcap; in ezx_pcap_probe() local
393 pcap = devm_kzalloc(&spi->dev, sizeof(*pcap), GFP_KERNEL); in ezx_pcap_probe()
394 if (!pcap) { in ezx_pcap_probe()
399 spin_lock_init(&pcap->io_lock); in ezx_pcap_probe()
400 spin_lock_init(&pcap->adc_lock); in ezx_pcap_probe()
401 INIT_WORK(&pcap->isr_work, pcap_isr_work); in ezx_pcap_probe()
402 INIT_WORK(&pcap->msr_work, pcap_msr_work); in ezx_pcap_probe()
403 spi_set_drvdata(spi, pcap); in ezx_pcap_probe()
412 pcap->spi = spi; in ezx_pcap_probe()
415 pcap->irq_base = pdata->irq_base; in ezx_pcap_probe()
416 pcap->workqueue = create_singlethread_workqueue("pcapd"); in ezx_pcap_probe()
417 if (!pcap->workqueue) { in ezx_pcap_probe()
419 dev_err(&spi->dev, "can't create pcap thread\n"); in ezx_pcap_probe()
425 ezx_pcap_write(pcap, PCAP_REG_INT_SEL, in ezx_pcap_probe()
429 for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++) { in ezx_pcap_probe()
431 irq_set_chip_data(i, pcap); in ezx_pcap_probe()
435 /* mask/ack all PCAP interrupts */ in ezx_pcap_probe()
436 ezx_pcap_write(pcap, PCAP_REG_MSR, PCAP_MASK_ALL_INTERRUPT); in ezx_pcap_probe()
437 ezx_pcap_write(pcap, PCAP_REG_ISR, PCAP_CLEAR_INTERRUPT_REGISTER); in ezx_pcap_probe()
438 pcap->msr = PCAP_MASK_ALL_INTERRUPT; in ezx_pcap_probe()
441 irq_set_chained_handler_and_data(spi->irq, pcap_irq_handler, pcap); in ezx_pcap_probe()
445 adc_irq = pcap_to_irq(pcap, (pdata->config & PCAP_SECOND_PORT) ? in ezx_pcap_probe()
449 pcap); in ezx_pcap_probe()
455 ret = pcap_add_subdev(pcap, &pdata->subdevs[i]); in ezx_pcap_probe()
462 pdata->init(pcap); in ezx_pcap_probe()
469 for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++) in ezx_pcap_probe()
472 destroy_workqueue(pcap->workqueue); in ezx_pcap_probe()
481 .name = "ezx-pcap",
500 MODULE_ALIAS("spi:ezx-pcap");