Thread (30 messages) 30 messages, 2 authors, 2016-05-10

Re: [PATCH V3 16/17] irqchip/gic: Prepare for adding platform driver

From: Marc Zyngier <hidden>
Date: 2016-05-06 14:27:38
Also in: linux-omap, linux-tegra, lkml

On Fri, 6 May 2016 15:09:51 +0100
Jon Hunter [off-list ref] wrote:

Hi Jon,

[...]
quoted
+int gic_of_setup(struct device_node *node, struct device *dev,
+		 struct gic_chip_data **gicp)
+{
+	struct gic_chip_data *gic;
 
-	*cpu_base = of_iomap(node, 1);
-	if (WARN(!*cpu_base, "unable to map gic cpu registers\n")) {
-		iounmap(*dist_base);
-		return -ENOMEM;
+	if (!node || !gicp)
+		return -EINVAL;
+
+	if (dev) {
+		*gicp = devm_kzalloc(dev, sizeof(*gic), GFP_KERNEL);
+		if (!*gicp)
+			return -ENOMEM;
 	}
 
-	if (of_property_read_u32(node, "cpu-offset", percpu_offset))
-		*percpu_offset = 0;
+	gic = *gicp;
+
+	gic->raw_dist_base = of_iomap(node, 0);
+	if (WARN(!gic->raw_dist_base, "unable to map gic dist registers\n"))
+		goto err;
+
+	gic->raw_cpu_base = of_iomap(node, 1);
+	if (WARN(!gic->raw_cpu_base, "unable to map gic cpu registers\n"))
+		goto err;
+
+	if (of_property_read_u32(node, "cpu-offset", &gic->percpu_offset))
+		gic->percpu_offset = 0;
 
+	gic->chip.parent_device = dev;
We can't initialise the device here as it gets overwritten in the
gic_init_bases. So I have had to re-organise things a bit. Good news is
that I have eliminated the call from the platform driver to
gic_init_bases so we only have a single call to initialise the GIC.
Ah, good. That sounds a lot better. Looking forward to v4.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny.
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