soc: ixp4xx: npe: Pass addresses as resources

Instead of using hardcoded base addresses implicitly
obtained through <linux/io.h>, pass the physical base
for the three NPE blocks as memory resources and remap
these in the driver.

Drop the memory request region business, this will
anyways be done by devm_* remapping functions.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 20 insertions, 16 deletions

diff --git a/drivers/soc/ixp4xx/ixp4xx-npe.c b/drivers/soc/ixp4xx/ixp4xx-npe.c
index e3294457b5de..d2dd916816d4 100644
--- a/drivers/soc/ixp4xx/ixp4xx-npe.c
+++ b/drivers/soc/ixp4xx/ixp4xx-npe.c
@@ -155,16 +155,10 @@ static struct {
 static struct npe npe_tab[NPE_COUNT] = {
 	{
 		.id	= 0,
-		.regs	= (struct npe_regs __iomem *)IXP4XX_NPEA_BASE_VIRT,
-		.regs_phys = IXP4XX_NPEA_BASE_PHYS,
 	}, {
 		.id	= 1,
-		.regs	= (struct npe_regs __iomem *)IXP4XX_NPEB_BASE_VIRT,
-		.regs_phys = IXP4XX_NPEB_BASE_PHYS,
 	}, {
 		.id	= 2,
-		.regs	= (struct npe_regs __iomem *)IXP4XX_NPEC_BASE_VIRT,
-		.regs_phys = IXP4XX_NPEC_BASE_PHYS,
 	}
 };
 
@@ -687,23 +681,34 @@ void npe_release(struct npe *npe)
 static int ixp4xx_npe_probe(struct platform_device *pdev)
 {
 	int i, found = 0;
+	struct device *dev = &pdev->dev;
+	struct resource *res;
 
 	for (i = 0; i < NPE_COUNT; i++) {
 		struct npe *npe = &npe_tab[i];
+
+		res = platform_get_resource(pdev, IORESOURCE_MEM, i);
+		if (!res)
+			return -ENODEV;
+
 		if (!(ixp4xx_read_feature_bits() &
-		      (IXP4XX_FEATURE_RESET_NPEA << i)))
+		      (IXP4XX_FEATURE_RESET_NPEA << i))) {
+			dev_info(dev, "NPE%d at 0x%08x-0x%08x not available\n",
+				 i, res->start, res->end);
 			continue; /* NPE already disabled or not present */
-		if (!(npe->mem_res = request_mem_region(npe->regs_phys,
-							REGS_SIZE,
-							npe_name(npe)))) {
-			print_npe(KERN_ERR, npe,
-				  "failed to request memory region\n");
-			continue;
 		}
+		npe->regs = devm_ioremap_resource(dev, res);
+		if (!npe->regs)
+			return -ENOMEM;
 
-		if (npe_reset(npe))
+		if (npe_reset(npe)) {
+			dev_info(dev, "NPE%d at 0x%08x-0x%08x does not reset\n",
+				 i, res->start, res->end);
 			continue;
+		}
 		npe->valid = 1;
+		dev_info(dev, "NPE%d at 0x%08x-0x%08x registered\n",
+			 i, res->start, res->end);
 		found++;
 	}
 
@@ -717,9 +722,8 @@ static int ixp4xx_npe_remove(struct platform_device *pdev)
 	int i;
 
 	for (i = 0; i < NPE_COUNT; i++)
-		if (npe_tab[i].mem_res) {
+		if (npe_tab[i].regs) {
 			npe_reset(&npe_tab[i]);
-			release_resource(npe_tab[i].mem_res);
 		}
 
 	return 0;