1 files changed, 69 insertions, 87 deletions

diff --git a/drivers/media/rc/nuvoton-cir.c b/drivers/media/rc/nuvoton-cir.c
index 85af7a869167..18adf580f502 100644
--- a/drivers/media/rc/nuvoton-cir.c
+++ b/drivers/media/rc/nuvoton-cir.c
@@ -39,6 +39,18 @@
 
 #include "nuvoton-cir.h"
 
+static const struct nvt_chip nvt_chips[] = {
+	{ "w83667hg", NVT_W83667HG },
+	{ "NCT6775F", NVT_6775F },
+	{ "NCT6776F", NVT_6776F },
+	{ "NCT6779D", NVT_6779D },
+};
+
+static inline bool is_w83667hg(struct nvt_dev *nvt)
+{
+	return nvt->chip_ver == NVT_W83667HG;
+}
+
 /* write val to config reg */
 static inline void nvt_cr_write(struct nvt_dev *nvt, u8 val, u8 reg)
 {
@@ -224,74 +236,60 @@ static void cir_wake_dump_regs(struct nvt_dev *nvt)
 	pr_cont("\n");
 }
 
+static inline const char *nvt_find_chip(struct nvt_dev *nvt, int id)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(nvt_chips); i++)
+		if ((id & SIO_ID_MASK) == nvt_chips[i].chip_ver) {
+			nvt->chip_ver = nvt_chips[i].chip_ver;
+			return nvt_chips[i].name;
+		}
+
+	return NULL;
+}
+
+
 /* detect hardware features */
-static int nvt_hw_detect(struct nvt_dev *nvt)
+static void nvt_hw_detect(struct nvt_dev *nvt)
 {
-	unsigned long flags;
-	u8 chip_major, chip_minor;
-	char chip_id[12];
-	bool chip_unknown = false;
+	const char *chip_name;
+	int chip_id;
 
 	nvt_efm_enable(nvt);
 
 	/* Check if we're wired for the alternate EFER setup */
-	chip_major = nvt_cr_read(nvt, CR_CHIP_ID_HI);
-	if (chip_major == 0xff) {
+	nvt->chip_major = nvt_cr_read(nvt, CR_CHIP_ID_HI);
+	if (nvt->chip_major == 0xff) {
 		nvt->cr_efir = CR_EFIR2;
 		nvt->cr_efdr = CR_EFDR2;
 		nvt_efm_enable(nvt);
-		chip_major = nvt_cr_read(nvt, CR_CHIP_ID_HI);
+		nvt->chip_major = nvt_cr_read(nvt, CR_CHIP_ID_HI);
 	}
 
-	chip_minor = nvt_cr_read(nvt, CR_CHIP_ID_LO);
-
-	/* these are the known working chip revisions... */
-	switch (chip_major) {
-	case CHIP_ID_HIGH_667:
-		strcpy(chip_id, "w83667hg\0");
-		if (chip_minor != CHIP_ID_LOW_667)
-			chip_unknown = true;
-		break;
-	case CHIP_ID_HIGH_677B:
-		strcpy(chip_id, "w83677hg\0");
-		if (chip_minor != CHIP_ID_LOW_677B2 &&
-		    chip_minor != CHIP_ID_LOW_677B3)
-			chip_unknown = true;
-		break;
-	case CHIP_ID_HIGH_677C:
-		strcpy(chip_id, "w83677hg-c\0");
-		if (chip_minor != CHIP_ID_LOW_677C)
-			chip_unknown = true;
-		break;
-	default:
-		strcpy(chip_id, "w836x7hg\0");
-		chip_unknown = true;
-		break;
-	}
+	nvt->chip_minor = nvt_cr_read(nvt, CR_CHIP_ID_LO);
+
+	chip_id = nvt->chip_major << 8 | nvt->chip_minor;
+	chip_name = nvt_find_chip(nvt, chip_id);
 
 	/* warn, but still let the driver load, if we don't know this chip */
-	if (chip_unknown)
-		nvt_pr(KERN_WARNING, "%s: unknown chip, id: 0x%02x 0x%02x, "
-		       "it may not work...", chip_id, chip_major, chip_minor);
+	if (!chip_name)
+		dev_warn(&nvt->pdev->dev,
+			 "unknown chip, id: 0x%02x 0x%02x, it may not work...",
+			 nvt->chip_major, nvt->chip_minor);
 	else
-		nvt_dbg("%s: chip id: 0x%02x 0x%02x",
-			chip_id, chip_major, chip_minor);
+		dev_info(&nvt->pdev->dev,
+			 "found %s or compatible: chip id: 0x%02x 0x%02x",
+			 chip_name, nvt->chip_major, nvt->chip_minor);
 
 	nvt_efm_disable(nvt);
-
-	spin_lock_irqsave(&nvt->nvt_lock, flags);
-	nvt->chip_major = chip_major;
-	nvt->chip_minor = chip_minor;
-	spin_unlock_irqrestore(&nvt->nvt_lock, flags);
-
-	return 0;
 }
 
 static void nvt_cir_ldev_init(struct nvt_dev *nvt)
 {
 	u8 val, psreg, psmask, psval;
 
-	if (nvt->chip_major == CHIP_ID_HIGH_667) {
+	if (is_w83667hg(nvt)) {
 		psreg = CR_MULTIFUNC_PIN_SEL;
 		psmask = MULTIFUNC_PIN_SEL_MASK;
 		psval = MULTIFUNC_ENABLE_CIR | MULTIFUNC_ENABLE_CIRWB;
@@ -485,8 +483,9 @@ static u32 nvt_rx_carrier_detect(struct nvt_dev *nvt)
 	duration *= SAMPLE_PERIOD;
 
 	if (!count || !duration) {
-		nvt_pr(KERN_NOTICE, "Unable to determine carrier! (c:%u, d:%u)",
-		       count, duration);
+		dev_notice(&nvt->pdev->dev,
+			   "Unable to determine carrier! (c:%u, d:%u)",
+			   count, duration);
 		return 0;
 	}
 
@@ -661,7 +660,7 @@ static void nvt_process_rx_ir_data(struct nvt_dev *nvt)
 
 static void nvt_handle_rx_fifo_overrun(struct nvt_dev *nvt)
 {
-	nvt_pr(KERN_WARNING, "RX FIFO overrun detected, flushing data!");
+	dev_warn(&nvt->pdev->dev, "RX FIFO overrun detected, flushing data!");
 
 	nvt->pkts = 0;
 	nvt_clear_cir_fifo(nvt);
@@ -719,7 +718,7 @@ static void nvt_get_rx_ir_data(struct nvt_dev *nvt)
 
 static void nvt_cir_log_irqs(u8 status, u8 iren)
 {
-	nvt_pr(KERN_INFO, "IRQ 0x%02x (IREN 0x%02x) :%s%s%s%s%s%s%s%s%s",
+	nvt_dbg("IRQ 0x%02x (IREN 0x%02x) :%s%s%s%s%s%s%s%s%s",
 		status, iren,
 		status & CIR_IRSTS_RDR	? " RDR"	: "",
 		status & CIR_IRSTS_RTR	? " RTR"	: "",
@@ -779,7 +778,7 @@ static irqreturn_t nvt_cir_isr(int irq, void *data)
 	if (!status) {
 		nvt_dbg_verbose("%s exiting, IRSTS 0x0", __func__);
 		nvt_cir_reg_write(nvt, 0xff, CIR_IRSTS);
-		return IRQ_RETVAL(IRQ_NONE);
+		return IRQ_NONE;
 	}
 
 	/* ack/clear all irq flags we've got */
@@ -790,11 +789,10 @@ static irqreturn_t nvt_cir_isr(int irq, void *data)
 	iren = nvt_cir_reg_read(nvt, CIR_IREN);
 	if (!iren) {
 		nvt_dbg_verbose("%s exiting, CIR not enabled", __func__);
-		return IRQ_RETVAL(IRQ_NONE);
+		return IRQ_NONE;
 	}
 
-	if (debug)
-		nvt_cir_log_irqs(status, iren);
+	nvt_cir_log_irqs(status, iren);
 
 	if (status & CIR_IRSTS_RTR) {
 		/* FIXME: add code for study/learn mode */
@@ -853,7 +851,7 @@ static irqreturn_t nvt_cir_isr(int irq, void *data)
 	}
 
 	nvt_dbg_verbose("%s done", __func__);
-	return IRQ_RETVAL(IRQ_HANDLED);
+	return IRQ_HANDLED;
 }
 
 /* Interrupt service routine for CIR Wake */
@@ -867,7 +865,7 @@ static irqreturn_t nvt_cir_wake_isr(int irq, void *data)
 
 	status = nvt_cir_wake_reg_read(nvt, CIR_WAKE_IRSTS);
 	if (!status)
-		return IRQ_RETVAL(IRQ_NONE);
+		return IRQ_NONE;
 
 	if (status & CIR_WAKE_IRSTS_IR_PENDING)
 		nvt_clear_cir_wake_fifo(nvt);
@@ -879,7 +877,7 @@ static irqreturn_t nvt_cir_wake_isr(int irq, void *data)
 	iren = nvt_cir_wake_reg_read(nvt, CIR_WAKE_IREN);
 	if (!iren) {
 		nvt_dbg_wake("%s exiting, wake not enabled", __func__);
-		return IRQ_RETVAL(IRQ_HANDLED);
+		return IRQ_HANDLED;
 	}
 
 	if ((status & CIR_WAKE_IRSTS_PE) &&
@@ -896,7 +894,7 @@ static irqreturn_t nvt_cir_wake_isr(int irq, void *data)
 	}
 
 	nvt_dbg_wake("%s done", __func__);
-	return IRQ_RETVAL(IRQ_HANDLED);
+	return IRQ_HANDLED;
 }
 
 static void nvt_enable_cir(struct nvt_dev *nvt)
@@ -974,7 +972,7 @@ static int nvt_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
 	struct rc_dev *rdev;
 	int ret = -ENOMEM;
 
-	nvt = kzalloc(sizeof(struct nvt_dev), GFP_KERNEL);
+	nvt = devm_kzalloc(&pdev->dev, sizeof(struct nvt_dev), GFP_KERNEL);
 	if (!nvt)
 		return ret;
 
@@ -1026,9 +1024,7 @@ static int nvt_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
 
 	init_waitqueue_head(&nvt->tx.queue);
 
-	ret = nvt_hw_detect(nvt);
-	if (ret)
-		goto exit_free_dev_rdev;
+	nvt_hw_detect(nvt);
 
 	/* Initialize CIR & CIR Wake Logical Devices */
 	nvt_efm_enable(nvt);
@@ -1074,25 +1070,26 @@ static int nvt_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
 
 	ret = -EBUSY;
 	/* now claim resources */
-	if (!request_region(nvt->cir_addr,
+	if (!devm_request_region(&pdev->dev, nvt->cir_addr,
 			    CIR_IOREG_LENGTH, NVT_DRIVER_NAME))
 		goto exit_unregister_device;
 
-	if (request_irq(nvt->cir_irq, nvt_cir_isr, IRQF_SHARED,
-			NVT_DRIVER_NAME, (void *)nvt))
-		goto exit_release_cir_addr;
+	if (devm_request_irq(&pdev->dev, nvt->cir_irq, nvt_cir_isr,
+			     IRQF_SHARED, NVT_DRIVER_NAME, (void *)nvt))
+		goto exit_unregister_device;
 
-	if (!request_region(nvt->cir_wake_addr,
+	if (!devm_request_region(&pdev->dev, nvt->cir_wake_addr,
 			    CIR_IOREG_LENGTH, NVT_DRIVER_NAME))
-		goto exit_free_irq;
+		goto exit_unregister_device;
 
-	if (request_irq(nvt->cir_wake_irq, nvt_cir_wake_isr, IRQF_SHARED,
-			NVT_DRIVER_NAME, (void *)nvt))
-		goto exit_release_cir_wake_addr;
+	if (devm_request_irq(&pdev->dev, nvt->cir_wake_irq,
+			     nvt_cir_wake_isr, IRQF_SHARED,
+			     NVT_DRIVER_NAME, (void *)nvt))
+		goto exit_unregister_device;
 
 	device_init_wakeup(&pdev->dev, true);
 
-	nvt_pr(KERN_NOTICE, "driver has been successfully loaded\n");
+	dev_notice(&pdev->dev, "driver has been successfully loaded\n");
 	if (debug) {
 		cir_dump_regs(nvt);
 		cir_wake_dump_regs(nvt);
@@ -1100,18 +1097,11 @@ static int nvt_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
 
 	return 0;
 
-exit_release_cir_wake_addr:
-	release_region(nvt->cir_wake_addr, CIR_IOREG_LENGTH);
-exit_free_irq:
-	free_irq(nvt->cir_irq, nvt);
-exit_release_cir_addr:
-	release_region(nvt->cir_addr, CIR_IOREG_LENGTH);
 exit_unregister_device:
 	rc_unregister_device(rdev);
 	rdev = NULL;
 exit_free_dev_rdev:
 	rc_free_device(rdev);
-	kfree(nvt);
 
 	return ret;
 }
@@ -1129,15 +1119,7 @@ static void nvt_remove(struct pnp_dev *pdev)
 	nvt_enable_wake(nvt);
 	spin_unlock_irqrestore(&nvt->nvt_lock, flags);
 
-	/* free resources */
-	free_irq(nvt->cir_irq, nvt);
-	free_irq(nvt->cir_wake_irq, nvt);
-	release_region(nvt->cir_addr, CIR_IOREG_LENGTH);
-	release_region(nvt->cir_wake_addr, CIR_IOREG_LENGTH);
-
 	rc_unregister_device(nvt->rdev);
-
-	kfree(nvt);
 }
 
 static int nvt_suspend(struct pnp_dev *pdev, pm_message_t state)