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authorGlenn Elliott <gelliott@cs.unc.edu>2012-03-04 19:47:13 -0500
committerGlenn Elliott <gelliott@cs.unc.edu>2012-03-04 19:47:13 -0500
commitc71c03bda1e86c9d5198c5d83f712e695c4f2a1e (patch)
treeecb166cb3e2b7e2adb3b5e292245fefd23381ac8 /drivers/mfd/ezx-pcap.c
parentea53c912f8a86a8567697115b6a0d8152beee5c8 (diff)
parent6a00f206debf8a5c8899055726ad127dbeeed098 (diff)
Merge branch 'mpi-master' into wip-k-fmlpwip-k-fmlp
Conflicts: litmus/sched_cedf.c
Diffstat (limited to 'drivers/mfd/ezx-pcap.c')
-rw-r--r--drivers/mfd/ezx-pcap.c72
1 files changed, 36 insertions, 36 deletions
diff --git a/drivers/mfd/ezx-pcap.c b/drivers/mfd/ezx-pcap.c
index 134c69aa4790..43a76c41cfcc 100644
--- a/drivers/mfd/ezx-pcap.c
+++ b/drivers/mfd/ezx-pcap.c
@@ -144,26 +144,27 @@ int pcap_to_irq(struct pcap_chip *pcap, int irq)
144} 144}
145EXPORT_SYMBOL_GPL(pcap_to_irq); 145EXPORT_SYMBOL_GPL(pcap_to_irq);
146 146
147static void pcap_mask_irq(unsigned int irq) 147static void pcap_mask_irq(struct irq_data *d)
148{ 148{
149 struct pcap_chip *pcap = get_irq_chip_data(irq); 149 struct pcap_chip *pcap = irq_data_get_irq_chip_data(d);
150 150
151 pcap->msr |= 1 << irq_to_pcap(pcap, irq); 151 pcap->msr |= 1 << irq_to_pcap(pcap, d->irq);
152 queue_work(pcap->workqueue, &pcap->msr_work); 152 queue_work(pcap->workqueue, &pcap->msr_work);
153} 153}
154 154
155static void pcap_unmask_irq(unsigned int irq) 155static void pcap_unmask_irq(struct irq_data *d)
156{ 156{
157 struct pcap_chip *pcap = get_irq_chip_data(irq); 157 struct pcap_chip *pcap = irq_data_get_irq_chip_data(d);
158 158
159 pcap->msr &= ~(1 << irq_to_pcap(pcap, irq)); 159 pcap->msr &= ~(1 << irq_to_pcap(pcap, d->irq));
160 queue_work(pcap->workqueue, &pcap->msr_work); 160 queue_work(pcap->workqueue, &pcap->msr_work);
161} 161}
162 162
163static struct irq_chip pcap_irq_chip = { 163static struct irq_chip pcap_irq_chip = {
164 .name = "pcap", 164 .name = "pcap",
165 .mask = pcap_mask_irq, 165 .irq_disable = pcap_mask_irq,
166 .unmask = pcap_unmask_irq, 166 .irq_mask = pcap_mask_irq,
167 .irq_unmask = pcap_unmask_irq,
167}; 168};
168 169
169static void pcap_msr_work(struct work_struct *work) 170static void pcap_msr_work(struct work_struct *work)
@@ -184,7 +185,7 @@ static void pcap_isr_work(struct work_struct *work)
184 ezx_pcap_read(pcap, PCAP_REG_MSR, &msr); 185 ezx_pcap_read(pcap, PCAP_REG_MSR, &msr);
185 ezx_pcap_read(pcap, PCAP_REG_ISR, &isr); 186 ezx_pcap_read(pcap, PCAP_REG_ISR, &isr);
186 187
187 /* We cant service/ack irqs that are assigned to port 2 */ 188 /* We can't service/ack irqs that are assigned to port 2 */
188 if (!(pdata->config & PCAP_SECOND_PORT)) { 189 if (!(pdata->config & PCAP_SECOND_PORT)) {
189 ezx_pcap_read(pcap, PCAP_REG_INT_SEL, &int_sel); 190 ezx_pcap_read(pcap, PCAP_REG_INT_SEL, &int_sel);
190 isr &= ~int_sel; 191 isr &= ~int_sel;
@@ -196,18 +197,8 @@ static void pcap_isr_work(struct work_struct *work)
196 local_irq_disable(); 197 local_irq_disable();
197 service = isr & ~msr; 198 service = isr & ~msr;
198 for (irq = pcap->irq_base; service; service >>= 1, irq++) { 199 for (irq = pcap->irq_base; service; service >>= 1, irq++) {
199 if (service & 1) { 200 if (service & 1)
200 struct irq_desc *desc = irq_to_desc(irq); 201 generic_handle_irq(irq);
201
202 if (WARN(!desc, KERN_WARNING
203 "Invalid PCAP IRQ %d\n", irq))
204 break;
205
206 if (desc->status & IRQ_DISABLED)
207 note_interrupt(irq, desc, IRQ_NONE);
208 else
209 desc->handle_irq(irq, desc);
210 }
211 } 202 }
212 local_irq_enable(); 203 local_irq_enable();
213 ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr); 204 ezx_pcap_write(pcap, PCAP_REG_MSR, pcap->msr);
@@ -216,9 +207,9 @@ static void pcap_isr_work(struct work_struct *work)
216 207
217static void pcap_irq_handler(unsigned int irq, struct irq_desc *desc) 208static void pcap_irq_handler(unsigned int irq, struct irq_desc *desc)
218{ 209{
219 struct pcap_chip *pcap = get_irq_data(irq); 210 struct pcap_chip *pcap = irq_get_handler_data(irq);
220 211
221 desc->chip->ack(irq); 212 desc->irq_data.chip->irq_ack(&desc->irq_data);
222 queue_work(pcap->workqueue, &pcap->isr_work); 213 queue_work(pcap->workqueue, &pcap->isr_work);
223 return; 214 return;
224} 215}
@@ -282,7 +273,7 @@ static irqreturn_t pcap_adc_irq(int irq, void *_pcap)
282 mutex_lock(&pcap->adc_mutex); 273 mutex_lock(&pcap->adc_mutex);
283 req = pcap->adc_queue[pcap->adc_head]; 274 req = pcap->adc_queue[pcap->adc_head];
284 275
285 if (WARN(!req, KERN_WARNING "adc irq without pending request\n")) { 276 if (WARN(!req, "adc irq without pending request\n")) {
286 mutex_unlock(&pcap->adc_mutex); 277 mutex_unlock(&pcap->adc_mutex);
287 return IRQ_HANDLED; 278 return IRQ_HANDLED;
288 } 279 }
@@ -384,12 +375,20 @@ static int __devinit pcap_add_subdev(struct pcap_chip *pcap,
384 struct pcap_subdev *subdev) 375 struct pcap_subdev *subdev)
385{ 376{
386 struct platform_device *pdev; 377 struct platform_device *pdev;
378 int ret;
387 379
388 pdev = platform_device_alloc(subdev->name, subdev->id); 380 pdev = platform_device_alloc(subdev->name, subdev->id);
381 if (!pdev)
382 return -ENOMEM;
383
389 pdev->dev.parent = &pcap->spi->dev; 384 pdev->dev.parent = &pcap->spi->dev;
390 pdev->dev.platform_data = subdev->platform_data; 385 pdev->dev.platform_data = subdev->platform_data;
391 386
392 return platform_device_add(pdev); 387 ret = platform_device_add(pdev);
388 if (ret)
389 platform_device_put(pdev);
390
391 return ret;
393} 392}
394 393
395static int __devexit ezx_pcap_remove(struct spi_device *spi) 394static int __devexit ezx_pcap_remove(struct spi_device *spi)
@@ -412,7 +411,7 @@ static int __devexit ezx_pcap_remove(struct spi_device *spi)
412 411
413 /* cleanup irqchip */ 412 /* cleanup irqchip */
414 for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++) 413 for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++)
415 set_irq_chip_and_handler(i, NULL, NULL); 414 irq_set_chip_and_handler(i, NULL, NULL);
416 415
417 destroy_workqueue(pcap->workqueue); 416 destroy_workqueue(pcap->workqueue);
418 417
@@ -457,7 +456,8 @@ static int __devinit ezx_pcap_probe(struct spi_device *spi)
457 pcap->irq_base = pdata->irq_base; 456 pcap->irq_base = pdata->irq_base;
458 pcap->workqueue = create_singlethread_workqueue("pcapd"); 457 pcap->workqueue = create_singlethread_workqueue("pcapd");
459 if (!pcap->workqueue) { 458 if (!pcap->workqueue) {
460 dev_err(&spi->dev, "cant create pcap thread\n"); 459 ret = -ENOMEM;
460 dev_err(&spi->dev, "can't create pcap thread\n");
461 goto free_pcap; 461 goto free_pcap;
462 } 462 }
463 463
@@ -468,12 +468,12 @@ static int __devinit ezx_pcap_probe(struct spi_device *spi)
468 468
469 /* setup irq chip */ 469 /* setup irq chip */
470 for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++) { 470 for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++) {
471 set_irq_chip_and_handler(i, &pcap_irq_chip, handle_simple_irq); 471 irq_set_chip_and_handler(i, &pcap_irq_chip, handle_simple_irq);
472 set_irq_chip_data(i, pcap); 472 irq_set_chip_data(i, pcap);
473#ifdef CONFIG_ARM 473#ifdef CONFIG_ARM
474 set_irq_flags(i, IRQF_VALID); 474 set_irq_flags(i, IRQF_VALID);
475#else 475#else
476 set_irq_noprobe(i); 476 irq_set_noprobe(i);
477#endif 477#endif
478 } 478 }
479 479
@@ -482,10 +482,10 @@ static int __devinit ezx_pcap_probe(struct spi_device *spi)
482 ezx_pcap_write(pcap, PCAP_REG_ISR, PCAP_CLEAR_INTERRUPT_REGISTER); 482 ezx_pcap_write(pcap, PCAP_REG_ISR, PCAP_CLEAR_INTERRUPT_REGISTER);
483 pcap->msr = PCAP_MASK_ALL_INTERRUPT; 483 pcap->msr = PCAP_MASK_ALL_INTERRUPT;
484 484
485 set_irq_type(spi->irq, IRQ_TYPE_EDGE_RISING); 485 irq_set_irq_type(spi->irq, IRQ_TYPE_EDGE_RISING);
486 set_irq_data(spi->irq, pcap); 486 irq_set_handler_data(spi->irq, pcap);
487 set_irq_chained_handler(spi->irq, pcap_irq_handler); 487 irq_set_chained_handler(spi->irq, pcap_irq_handler);
488 set_irq_wake(spi->irq, 1); 488 irq_set_irq_wake(spi->irq, 1);
489 489
490 /* ADC */ 490 /* ADC */
491 adc_irq = pcap_to_irq(pcap, (pdata->config & PCAP_SECOND_PORT) ? 491 adc_irq = pcap_to_irq(pcap, (pdata->config & PCAP_SECOND_PORT) ?
@@ -514,7 +514,7 @@ remove_subdevs:
514 free_irq(adc_irq, pcap); 514 free_irq(adc_irq, pcap);
515free_irqchip: 515free_irqchip:
516 for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++) 516 for (i = pcap->irq_base; i < (pcap->irq_base + PCAP_NIRQS); i++)
517 set_irq_chip_and_handler(i, NULL, NULL); 517 irq_set_chip_and_handler(i, NULL, NULL);
518/* destroy_workqueue: */ 518/* destroy_workqueue: */
519 destroy_workqueue(pcap->workqueue); 519 destroy_workqueue(pcap->workqueue);
520free_pcap: 520free_pcap: