Devicetree updates for v6.4, part 2:

- First part of DT header detangling dropping cpu.h from of_device.h
   and replacing some includes with forward declarations. A handful of
   drivers needed some adjustment to their includes as a result.
 
 - Refactor of_device.h to be used by bus drivers rather than various
   device drivers. This moves non-bus related functions out of
   of_device.h. The end goal is for of_platform.h and of_device.h to stop
   including each other.
 
 - Refactor open coded parsing of "ranges" in some bus drivers to use DT
   address parsing functions
 
 - Add some new address parsing functions of_property_read_reg(),
   of_range_count(), and of_range_to_resource() in preparation to convert
   more open coded parsing of DT addresses to use them.
 
 - Treewide clean-ups to use of_property_read_bool() and
   of_property_present() as appropriate. The ones here are the ones
   that didn't get picked up elsewhere.
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Merge tag 'devicetree-for-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull more devicetree updates from Rob Herring:

 - First part of DT header detangling dropping cpu.h from of_device.h
   and replacing some includes with forward declarations. A handful of
   drivers needed some adjustment to their includes as a result.

 - Refactor of_device.h to be used by bus drivers rather than various
   device drivers. This moves non-bus related functions out of
   of_device.h. The end goal is for of_platform.h and of_device.h to
   stop including each other.

 - Refactor open coded parsing of "ranges" in some bus drivers to use DT
   address parsing functions

 - Add some new address parsing functions of_property_read_reg(),
   of_range_count(), and of_range_to_resource() in preparation to
   convert more open coded parsing of DT addresses to use them.

 - Treewide clean-ups to use of_property_read_bool() and
   of_property_present() as appropriate. The ones here are the ones that
   didn't get picked up elsewhere.

* tag 'devicetree-for-6.4-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (34 commits)
  bus: tegra-gmi: Replace of_platform.h with explicit includes
  hte: Use of_property_present() for testing DT property presence
  w1: w1-gpio: Use of_property_read_bool() for boolean properties
  virt: fsl: Use of_property_present() for testing DT property presence
  soc: fsl: Use of_property_present() for testing DT property presence
  sbus: display7seg: Use of_property_read_bool() for boolean properties
  sparc: Use of_property_read_bool() for boolean properties
  sparc: Use of_property_present() for testing DT property presence
  bus: mvebu-mbus: Remove open coded "ranges" parsing
  of/address: Add of_property_read_reg() helper
  of/address: Add of_range_count() helper
  of/address: Add support for 3 address cell bus
  of/address: Add of_range_to_resource() helper
  of: unittest: Add bus address range parsing tests
  of: Drop cpu.h include from of_device.h
  OPP: Adjust includes to remove of_device.h
  irqchip: loongson-eiointc: Add explicit include for cpuhotplug.h
  cpuidle: Adjust includes to remove of_device.h
  cpufreq: sun50i: Add explicit include for cpu.h
  cpufreq: Adjust includes to remove of_device.h
  ...

arch/arm/kernel/cpuidle.c

@@ -5,7 +5,6 @@
 
 #include <linux/cpuidle.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <asm/cpuidle.h>
 
 extern struct of_cpuidle_method __cpuidle_method_of_table[];

arch/arm/mach-sunxi/mc_smp.c

@@ -19,7 +19,6 @@
 #include <linux/irqchip/arm-gic.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
-#include <linux/of_device.h>
 #include <linux/smp.h>
 
 #include <asm/cacheflush.h>

arch/riscv/kernel/cacheinfo.c

@@ -5,7 +5,6 @@
 
 #include <linux/cpu.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <asm/cacheinfo.h>
 
 static struct riscv_cacheinfo_ops *rv_cache_ops;

arch/riscv/kernel/setup.c

@@ -8,6 +8,7 @@
  *  Nick Kossifidis <mick@ics.forth.gr>
  */
 
+#include <linux/cpu.h>
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/memblock.h>
@@ -15,7 +16,6 @@
 #include <linux/console.h>
 #include <linux/screen_info.h>
 #include <linux/of_fdt.h>
-#include <linux/of_platform.h>
 #include <linux/sched/task.h>
 #include <linux/smp.h>
 #include <linux/efi.h>

arch/sparc/include/asm/prom.h

@@ -19,11 +19,14 @@
 #include <linux/mutex.h>
 #include <linux/atomic.h>
 #include <linux/irqdomain.h>
+#include <linux/spinlock.h>
 
 #define of_compat_cmp(s1, s2, l)	strncmp((s1), (s2), (l))
 #define of_prop_cmp(s1, s2)		strcasecmp((s1), (s2))
 #define of_node_cmp(s1, s2)		strcmp((s1), (s2))
 
+extern raw_spinlock_t devtree_lock;
+
 struct of_irq_controller {
 	unsigned int	(*irq_build)(struct device_node *, unsigned int, void *);
 	void		*data;

arch/sparc/kernel/of_device_32.c

@@ -29,7 +29,7 @@ static int of_bus_pci_match(struct device_node *np)
 		 * parent as-is, not with the PCI translate
 		 * method which chops off the top address cell.
 		 */
-		if (!of_find_property(np, "ranges", NULL))
+		if (!of_property_present(np, "ranges"))
 			return 0;
 
 		return 1;
@@ -223,7 +223,7 @@ static int __init build_one_resource(struct device_node *parent,
 static int __init use_1to1_mapping(struct device_node *pp)
 {
 	/* If we have a ranges property in the parent, use it.  */
-	if (of_find_property(pp, "ranges", NULL) != NULL)
+	if (of_property_present(pp, "ranges"))
 		return 0;
 
 	/* Some SBUS devices use intermediate nodes to express

arch/sparc/kernel/of_device_64.c

@@ -58,7 +58,7 @@ static int of_bus_pci_match(struct device_node *np)
 		 * parent as-is, not with the PCI translate
 		 * method which chops off the top address cell.
 		 */
-		if (!of_find_property(np, "ranges", NULL))
+		if (!of_property_present(np, "ranges"))
 			return 0;
 
 		return 1;
@@ -78,7 +78,7 @@ static int of_bus_simba_match(struct device_node *np)
 	 * simba.
 	 */
 	if (of_node_name_eq(np, "pci")) {
-		if (!of_find_property(np, "ranges", NULL))
+		if (!of_property_present(np, "ranges"))
 			return 1;
 	}
 
@@ -283,7 +283,7 @@ static int __init build_one_resource(struct device_node *parent,
 static int __init use_1to1_mapping(struct device_node *pp)
 {
 	/* If we have a ranges property in the parent, use it.  */
-	if (of_find_property(pp, "ranges", NULL) != NULL)
+	if (of_property_present(pp, "ranges"))
 		return 0;
 
 	/* If the parent is the dma node of an ISA bus, pass

arch/sparc/kernel/of_device_common.c

@@ -162,7 +162,7 @@ int of_bus_sbus_match(struct device_node *np)
 		 * don't have some intervening real bus that provides
 		 * ranges based translations.
 		 */
-		if (of_find_property(dp, "ranges", NULL) != NULL)
+		if (of_property_present(dp, "ranges"))
 			break;
 
 		dp = dp->parent;

arch/sparc/kernel/pci_schizo.c

@@ -1270,7 +1270,7 @@ static void schizo_pbm_hw_init(struct pci_pbm_info *pbm)
 	    pbm->chip_version >= 0x2)
 		tmp |= 0x3UL << SCHIZO_PCICTRL_PTO_SHIFT;
 
-	if (!of_find_property(pbm->op->dev.of_node, "no-bus-parking", NULL))
+	if (!of_property_read_bool(pbm->op->dev.of_node, "no-bus-parking"))
 		tmp |= SCHIZO_PCICTRL_PARK;
 	else
 		tmp &= ~SCHIZO_PCICTRL_PARK;

arch/sparc/kernel/power.c

@@ -28,7 +28,7 @@ static int has_button_interrupt(unsigned int irq, struct device_node *dp)
 {
 	if (irq == 0xffffffff)
 		return 0;
-	if (!of_find_property(dp, "button", NULL))
+	if (!of_property_read_bool(dp, "button"))
 		return 0;
 
 	return 1;

arch/sparc/kernel/prom_64.c

@@ -502,7 +502,7 @@ static void *fill_in_one_cpu(struct device_node *dp, int cpuid, int arg)
 	struct device_node *portid_parent = NULL;
 	int portid = -1;
 
-	if (of_find_property(dp, "cpuid", NULL)) {
+	if (of_property_present(dp, "cpuid")) {
 		int limit = 2;
 
 		portid_parent = dp;

arch/sparc/kernel/time_32.c

@@ -277,7 +277,7 @@ static int clock_probe(struct platform_device *op)
 		return -ENODEV;
 
 	/* Only the primary RTC has an address property */
-	if (!of_find_property(dp, "address", NULL))
+	if (!of_property_present(dp, "address"))
 		return -ENODEV;
 
 	m48t59_rtc.resource = &op->resource[0];

drivers/base/cacheinfo.c

@@ -14,7 +14,7 @@
 #include <linux/cpu.h>
 #include <linux/device.h>
 #include <linux/init.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/smp.h>

drivers/bus/mvebu-mbus.c

@@ -1179,74 +1179,32 @@ static int __init mbus_dt_setup_win(struct mvebu_mbus_state *mbus,
 	return 0;
 }
 
-static int __init
-mbus_parse_ranges(struct device_node *node,
-		  int *addr_cells, int *c_addr_cells, int *c_size_cells,
-		  int *cell_count, const __be32 **ranges_start,
-		  const __be32 **ranges_end)
-{
-	const __be32 *prop;
-	int ranges_len, tuple_len;
-
-	/* Allow a node with no 'ranges' property */
-	*ranges_start = of_get_property(node, "ranges", &ranges_len);
-	if (*ranges_start == NULL) {
-		*addr_cells = *c_addr_cells = *c_size_cells = *cell_count = 0;
-		*ranges_start = *ranges_end = NULL;
-		return 0;
-	}
-	*ranges_end = *ranges_start + ranges_len / sizeof(__be32);
-
-	*addr_cells = of_n_addr_cells(node);
-
-	prop = of_get_property(node, "#address-cells", NULL);
-	*c_addr_cells = be32_to_cpup(prop);
-
-	prop = of_get_property(node, "#size-cells", NULL);
-	*c_size_cells = be32_to_cpup(prop);
-
-	*cell_count = *addr_cells + *c_addr_cells + *c_size_cells;
-	tuple_len = (*cell_count) * sizeof(__be32);
-
-	if (ranges_len % tuple_len) {
-		pr_warn("malformed ranges entry '%pOFn'\n", node);
-		return -EINVAL;
-	}
-	return 0;
-}
-
 static int __init mbus_dt_setup(struct mvebu_mbus_state *mbus,
 				struct device_node *np)
 {
-	int addr_cells, c_addr_cells, c_size_cells;
+	int ret;
-	int i, ret, cell_count;
+	struct of_range_parser parser;
-	const __be32 *r, *ranges_start, *ranges_end;
+	struct of_range range;
 
-	ret = mbus_parse_ranges(np, &addr_cells, &c_addr_cells,
+	ret = of_range_parser_init(&parser, np);
-				&c_size_cells, &cell_count,
-				&ranges_start, &ranges_end);
 	if (ret < 0)
-		return ret;
+		return 0;
 
-	for (i = 0, r = ranges_start; r < ranges_end; r += cell_count, i++) {
+	for_each_of_range(&parser, &range) {
-		u32 windowid, base, size;
+		u32 windowid = upper_32_bits(range.bus_addr);
 		u8 target, attr;
 
 		/*
 		 * An entry with a non-zero custom field do not
 		 * correspond to a static window, so skip it.
 		 */
-		windowid = of_read_number(r, 1);
 		if (CUSTOM(windowid))
 			continue;
 
 		target = TARGET(windowid);
 		attr = ATTR(windowid);
 
-		base = of_read_number(r + c_addr_cells, addr_cells);
+		ret = mbus_dt_setup_win(mbus, range.cpu_addr, range.size, target, attr);
-		size = of_read_number(r + c_addr_cells + addr_cells,
-				      c_size_cells);
-		ret = mbus_dt_setup_win(mbus, base, size, target, attr);
 		if (ret < 0)
 			return ret;
 	}

drivers/bus/tegra-gmi.c

@@ -9,7 +9,9 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/reset.h>
 

drivers/bus/uniphier-system-bus.c

@@ -176,10 +176,9 @@ static int uniphier_system_bus_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct uniphier_system_bus_priv *priv;
-	const __be32 *ranges;
+	struct of_range_parser parser;
-	u32 cells, addr, size;
+	struct of_range range;
-	u64 paddr;
+	int ret;
-	int pna, bank, rlen, rone, ret;
 
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
@@ -191,48 +190,17 @@ static int uniphier_system_bus_probe(struct platform_device *pdev)
 
 	priv->dev = dev;
 
-	pna = of_n_addr_cells(dev->of_node);
+	ret = of_range_parser_init(&parser, dev->of_node);
-
+	if (ret)
-	ret = of_property_read_u32(dev->of_node, "#address-cells", &cells);
-	if (ret) {
-		dev_err(dev, "failed to get #address-cells\n");
 		return ret;
-	}
-	if (cells != 2) {
-		dev_err(dev, "#address-cells must be 2\n");
-		return -EINVAL;
-	}
 
-	ret = of_property_read_u32(dev->of_node, "#size-cells", &cells);
+	for_each_of_range(&parser, &range) {
-	if (ret) {
+		if (range.cpu_addr == OF_BAD_ADDR)
-		dev_err(dev, "failed to get #size-cells\n");
-		return ret;
-	}
-	if (cells != 1) {
-		dev_err(dev, "#size-cells must be 1\n");
-		return -EINVAL;
-	}
-
-	ranges = of_get_property(dev->of_node, "ranges", &rlen);
-	if (!ranges) {
-		dev_err(dev, "failed to get ranges property\n");
-		return -ENOENT;
-	}
-
-	rlen /= sizeof(*ranges);
-	rone = pna + 2;
-
-	for (; rlen >= rone; rlen -= rone) {
-		bank = be32_to_cpup(ranges++);
-		addr = be32_to_cpup(ranges++);
-		paddr = of_translate_address(dev->of_node, ranges);
-		if (paddr == OF_BAD_ADDR)
 			return -EINVAL;
-		ranges += pna;
+		ret = uniphier_system_bus_add_bank(priv,
-		size = be32_to_cpup(ranges++);
+						   upper_32_bits(range.bus_addr),
-
+						   lower_32_bits(range.bus_addr),
-		ret = uniphier_system_bus_add_bank(priv, bank, addr,
+						   range.cpu_addr, range.size);
-						   paddr, size);
 		if (ret)
 			return ret;
 	}

drivers/clocksource/ingenic-timer.c

@@ -9,13 +9,12 @@
 #include <linux/clk.h>
 #include <linux/clockchips.h>
 #include <linux/clocksource.h>
+#include <linux/cpuhotplug.h>
 #include <linux/interrupt.h>
 #include <linux/mfd/ingenic-tcu.h>
 #include <linux/mfd/syscon.h>
 #include <linux/of.h>
-#include <linux/of_address.h>
 #include <linux/of_irq.h>
-#include <linux/of_platform.h>
 #include <linux/overflow.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>

drivers/cpufreq/acpi-cpufreq.c

@@ -20,6 +20,7 @@
 #include <linux/dmi.h>
 #include <linux/slab.h>
 #include <linux/string_helpers.h>
+#include <linux/platform_device.h>
 
 #include <linux/acpi.h>
 #include <linux/io.h>

drivers/cpufreq/cpufreq-dt-platdev.c

@@ -6,7 +6,6 @@
 
 #include <linux/err.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 
 #include "cpufreq-dt.h"

drivers/cpufreq/kirkwood-cpufreq.c

@@ -9,7 +9,7 @@
 #include <linux/module.h>
 #include <linux/clk.h>
 #include <linux/cpufreq.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <asm/proc-fns.h>

drivers/cpufreq/maple-cpufreq.c

@@ -23,7 +23,7 @@
 #include <linux/completion.h>
 #include <linux/mutex.h>
 #include <linux/time.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 
 #define DBG(fmt...) pr_debug(fmt)
 

drivers/cpufreq/pcc-cpufreq.c

@@ -31,6 +31,7 @@
 #include <linux/cpufreq.h>
 #include <linux/compiler.h>
 #include <linux/slab.h>
+#include <linux/platform_device.h>
 
 #include <linux/acpi.h>
 #include <linux/io.h>

drivers/cpufreq/pmac32-cpufreq.c

@@ -23,7 +23,7 @@
 #include <linux/init.h>
 #include <linux/device.h>
 #include <linux/hardirq.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 
 #include <asm/machdep.h>
 #include <asm/irq.h>

drivers/cpufreq/pmac64-cpufreq.c

@@ -21,7 +21,7 @@
 #include <linux/init.h>
 #include <linux/completion.h>
 #include <linux/mutex.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 
 #include <asm/machdep.h>
 #include <asm/irq.h>

drivers/cpufreq/qcom-cpufreq-hw.c

@@ -11,8 +11,8 @@
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of_address.h>
+#include <linux/of.h>
-#include <linux/of_platform.h>
+#include <linux/platform_device.h>
 #include <linux/pm_opp.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>

drivers/cpufreq/spear-cpufreq.c

@@ -18,7 +18,7 @@
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/types.h>

drivers/cpufreq/sun50i-cpufreq-nvmem.c

@@ -10,9 +10,10 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <linux/cpu.h>
 #include <linux/module.h>
 #include <linux/nvmem-consumer.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_opp.h>
 #include <linux/slab.h>

drivers/cpufreq/tegra124-cpufreq.c

@@ -11,7 +11,6 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_opp.h>

drivers/cpufreq/tegra20-cpufreq.c

@@ -12,7 +12,7 @@
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_opp.h>
 #include <linux/types.h>

drivers/cpuidle/cpuidle-psci.c

@@ -16,7 +16,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/psci.h>
 #include <linux/pm_domain.h>

drivers/cpuidle/cpuidle-qcom-spm.c

@@ -11,8 +11,7 @@
 #include <linux/io.h>
 #include <linux/slab.h>
 #include <linux/of.h>
-#include <linux/of_address.h>
+#include <linux/of_platform.h>
-#include <linux/of_device.h>
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/cpuidle.h>

drivers/cpuidle/cpuidle-riscv-sbi.c

@@ -8,6 +8,7 @@
 
 #define pr_fmt(fmt) "cpuidle-riscv-sbi: " fmt
 
+#include <linux/cpuhotplug.h>
 #include <linux/cpuidle.h>
 #include <linux/cpumask.h>
 #include <linux/cpu_pm.h>
@@ -15,7 +16,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/slab.h>
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>

drivers/cpuidle/dt_idle_states.c

@@ -14,7 +14,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 
 #include "dt_idle_states.h"
 

drivers/hte/hte.c

@@ -518,7 +518,7 @@ static struct hte_device *hte_of_get_dev(struct device *dev,
 
 	np = dev->of_node;
 
-	if (!of_find_property(np, "timestamp-names", NULL)) {
+	if (!of_property_present(np, "timestamp-names")) {
 		/* Let hte core construct it during request time */
 		desc->attr.name = NULL;
 	} else {

drivers/irqchip/irq-loongson-eiointc.c

@@ -7,16 +7,13 @@
 
 #define pr_fmt(fmt) "eiointc: " fmt
 
+#include <linux/cpuhotplug.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <linux/irqchip.h>
 #include <linux/irqdomain.h>
 #include <linux/irqchip/chained_irq.h>
 #include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/of_platform.h>
 #include <linux/syscore_ops.h>
 
 #define EIOINTC_REG_NODEMAP	0x14a0

drivers/of/Makefile

@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-obj-y = base.o device.o platform.o property.o
+obj-y = base.o cpu.o device.o platform.o property.o
 obj-$(CONFIG_OF_KOBJ) += kobj.o
 obj-$(CONFIG_OF_DYNAMIC) += dynamic.o
 obj-$(CONFIG_OF_FLATTREE) += fdt.o

drivers/of/address.c

@@ -90,11 +90,17 @@ static int of_bus_default_translate(__be32 *addr, u64 offset, int na)
 	return 0;
 }
 
+static unsigned int of_bus_default_flags_get_flags(const __be32 *addr)
+{
+	return of_read_number(addr, 1);
+}
+
 static unsigned int of_bus_default_get_flags(const __be32 *addr)
 {
 	return IORESOURCE_MEM;
 }
 
+
 #ifdef CONFIG_PCI
 static unsigned int of_bus_pci_get_flags(const __be32 *addr)
 {
@@ -213,9 +219,6 @@ int of_pci_range_to_resource(struct of_pci_range *range,
 	res->parent = res->child = res->sibling = NULL;
 	res->name = np->full_name;
 
-	if (!IS_ENABLED(CONFIG_PCI))
-		return -ENOSYS;
-
 	if (res->flags & IORESOURCE_IO) {
 		unsigned long port;
 		err = pci_register_io_range(&np->fwnode, range->cpu_addr,
@@ -247,6 +250,34 @@ int of_pci_range_to_resource(struct of_pci_range *range,
 }
 EXPORT_SYMBOL(of_pci_range_to_resource);
 
+/*
+ * of_range_to_resource - Create a resource from a ranges entry
+ * @np:		device node where the range belongs to
+ * @index:	the 'ranges' index to convert to a resource
+ * @res:	pointer to a valid resource that will be updated to
+ *              reflect the values contained in the range.
+ *
+ * Returns ENOENT if the entry is not found or EINVAL if the range cannot be
+ * converted to resource.
+ */
+int of_range_to_resource(struct device_node *np, int index, struct resource *res)
+{
+	int ret, i = 0;
+	struct of_range_parser parser;
+	struct of_range range;
+
+	ret = of_range_parser_init(&parser, np);
+	if (ret)
+		return ret;
+
+	for_each_of_range(&parser, &range)
+		if (i++ == index)
+			return of_pci_range_to_resource(&range, np, res);
+
+	return -ENOENT;
+}
+EXPORT_SYMBOL(of_range_to_resource);
+
 /*
  * ISA bus specific translator
  */
@@ -303,6 +334,11 @@ static unsigned int of_bus_isa_get_flags(const __be32 *addr)
 	return flags;
 }
 
+static int of_bus_default_flags_match(struct device_node *np)
+{
+	return of_bus_n_addr_cells(np) == 3;
+}
+
 /*
  * Array of bus specific translators
  */
@@ -332,6 +368,17 @@ static struct of_bus of_busses[] = {
 		.has_flags = true,
 		.get_flags = of_bus_isa_get_flags,
 	},
+	/* Default with flags cell */
+	{
+		.name = "default-flags",
+		.addresses = "reg",
+		.match = of_bus_default_flags_match,
+		.count_cells = of_bus_default_count_cells,
+		.map = of_bus_default_map,
+		.translate = of_bus_default_translate,
+		.has_flags = true,
+		.get_flags = of_bus_default_flags_get_flags,
+	},
 	/* Default */
 	{
 		.name = "default",
@@ -697,6 +744,29 @@ const __be32 *__of_get_address(struct device_node *dev, int index, int bar_no,
 }
 EXPORT_SYMBOL(__of_get_address);
 
+/**
+ * of_property_read_reg - Retrieve the specified "reg" entry index without translating
+ * @np: device tree node for which to retrieve "reg" from
+ * @idx: "reg" entry index to read
+ * @addr: return value for the untranslated address
+ * @size: return value for the entry size
+ *
+ * Returns -EINVAL if "reg" is not found. Returns 0 on success with addr and
+ * size values filled in.
+ */
+int of_property_read_reg(struct device_node *np, int idx, u64 *addr, u64 *size)
+{
+	const __be32 *prop = of_get_address(np, idx, size, NULL);
+
+	if (!prop)
+		return -EINVAL;
+
+	*addr = of_read_number(prop, of_n_addr_cells(np));
+
+	return 0;
+}
+EXPORT_SYMBOL(of_property_read_reg);
+
 static int parser_init(struct of_pci_range_parser *parser,
 			struct device_node *node, const char *name)
 {

drivers/of/base.c

@@ -286,193 +286,6 @@ const void *of_get_property(const struct device_node *np, const char *name,
 }
 EXPORT_SYMBOL(of_get_property);
 
-/**
- * of_get_cpu_hwid - Get the hardware ID from a CPU device node
- *
- * @cpun: CPU number(logical index) for which device node is required
- * @thread: The local thread number to get the hardware ID for.
- *
- * Return: The hardware ID for the CPU node or ~0ULL if not found.
- */
-u64 of_get_cpu_hwid(struct device_node *cpun, unsigned int thread)
-{
-	const __be32 *cell;
-	int ac, len;
-
-	ac = of_n_addr_cells(cpun);
-	cell = of_get_property(cpun, "reg", &len);
-	if (!cell || !ac || ((sizeof(*cell) * ac * (thread + 1)) > len))
-		return ~0ULL;
-
-	cell += ac * thread;
-	return of_read_number(cell, ac);
-}
-
-/*
- * arch_match_cpu_phys_id - Match the given logical CPU and physical id
- *
- * @cpu: logical cpu index of a core/thread
- * @phys_id: physical identifier of a core/thread
- *
- * CPU logical to physical index mapping is architecture specific.
- * However this __weak function provides a default match of physical
- * id to logical cpu index. phys_id provided here is usually values read
- * from the device tree which must match the hardware internal registers.
- *
- * Returns true if the physical identifier and the logical cpu index
- * correspond to the same core/thread, false otherwise.
- */
-bool __weak arch_match_cpu_phys_id(int cpu, u64 phys_id)
-{
-	return (u32)phys_id == cpu;
-}
-
-/*
- * Checks if the given "prop_name" property holds the physical id of the
- * core/thread corresponding to the logical cpu 'cpu'. If 'thread' is not
- * NULL, local thread number within the core is returned in it.
- */
-static bool __of_find_n_match_cpu_property(struct device_node *cpun,
-			const char *prop_name, int cpu, unsigned int *thread)
-{
-	const __be32 *cell;
-	int ac, prop_len, tid;
-	u64 hwid;
-
-	ac = of_n_addr_cells(cpun);
-	cell = of_get_property(cpun, prop_name, &prop_len);
-	if (!cell && !ac && arch_match_cpu_phys_id(cpu, 0))
-		return true;
-	if (!cell || !ac)
-		return false;
-	prop_len /= sizeof(*cell) * ac;
-	for (tid = 0; tid < prop_len; tid++) {
-		hwid = of_read_number(cell, ac);
-		if (arch_match_cpu_phys_id(cpu, hwid)) {
-			if (thread)
-				*thread = tid;
-			return true;
-		}
-		cell += ac;
-	}
-	return false;
-}
-
-/*
- * arch_find_n_match_cpu_physical_id - See if the given device node is
- * for the cpu corresponding to logical cpu 'cpu'.  Return true if so,
- * else false.  If 'thread' is non-NULL, the local thread number within the
- * core is returned in it.
- */
-bool __weak arch_find_n_match_cpu_physical_id(struct device_node *cpun,
-					      int cpu, unsigned int *thread)
-{
-	/* Check for non-standard "ibm,ppc-interrupt-server#s" property
-	 * for thread ids on PowerPC. If it doesn't exist fallback to
-	 * standard "reg" property.
-	 */
-	if (IS_ENABLED(CONFIG_PPC) &&
-	    __of_find_n_match_cpu_property(cpun,
-					   "ibm,ppc-interrupt-server#s",
-					   cpu, thread))
-		return true;
-
-	return __of_find_n_match_cpu_property(cpun, "reg", cpu, thread);
-}
-
-/**
- * of_get_cpu_node - Get device node associated with the given logical CPU
- *
- * @cpu: CPU number(logical index) for which device node is required
- * @thread: if not NULL, local thread number within the physical core is
- *          returned
- *
- * The main purpose of this function is to retrieve the device node for the
- * given logical CPU index. It should be used to initialize the of_node in
- * cpu device. Once of_node in cpu device is populated, all the further
- * references can use that instead.
- *
- * CPU logical to physical index mapping is architecture specific and is built
- * before booting secondary cores. This function uses arch_match_cpu_phys_id
- * which can be overridden by architecture specific implementation.
- *
- * Return: A node pointer for the logical cpu with refcount incremented, use
- * of_node_put() on it when done. Returns NULL if not found.
- */
-struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
-{
-	struct device_node *cpun;
-
-	for_each_of_cpu_node(cpun) {
-		if (arch_find_n_match_cpu_physical_id(cpun, cpu, thread))
-			return cpun;
-	}
-	return NULL;
-}
-EXPORT_SYMBOL(of_get_cpu_node);
-
-/**
- * of_cpu_node_to_id: Get the logical CPU number for a given device_node
- *
- * @cpu_node: Pointer to the device_node for CPU.
- *
- * Return: The logical CPU number of the given CPU device_node or -ENODEV if the
- * CPU is not found.
- */
-int of_cpu_node_to_id(struct device_node *cpu_node)
-{
-	int cpu;
-	bool found = false;
-	struct device_node *np;
-
-	for_each_possible_cpu(cpu) {
-		np = of_cpu_device_node_get(cpu);
-		found = (cpu_node == np);
-		of_node_put(np);
-		if (found)
-			return cpu;
-	}
-
-	return -ENODEV;
-}
-EXPORT_SYMBOL(of_cpu_node_to_id);
-
-/**
- * of_get_cpu_state_node - Get CPU's idle state node at the given index
- *
- * @cpu_node: The device node for the CPU
- * @index: The index in the list of the idle states
- *
- * Two generic methods can be used to describe a CPU's idle states, either via
- * a flattened description through the "cpu-idle-states" binding or via the
- * hierarchical layout, using the "power-domains" and the "domain-idle-states"
- * bindings. This function check for both and returns the idle state node for
- * the requested index.
- *
- * Return: An idle state node if found at @index. The refcount is incremented
- * for it, so call of_node_put() on it when done. Returns NULL if not found.
- */
-struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
-					  int index)
-{
-	struct of_phandle_args args;
-	int err;
-
-	err = of_parse_phandle_with_args(cpu_node, "power-domains",
-					"#power-domain-cells", 0, &args);
-	if (!err) {
-		struct device_node *state_node =
-			of_parse_phandle(args.np, "domain-idle-states", index);
-
-		of_node_put(args.np);
-		if (state_node)
-			return state_node;
-	}
-
-	return of_parse_phandle(cpu_node, "cpu-idle-states", index);
-}
-EXPORT_SYMBOL(of_get_cpu_state_node);
-
 /**
  * __of_device_is_compatible() - Check if the node matches given constraints
  * @device: pointer to node

drivers/of/cpu.c

@@ -0,0 +1,210 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/cpu.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+
+/**
+ * of_get_cpu_hwid - Get the hardware ID from a CPU device node
+ *
+ * @cpun: CPU number(logical index) for which device node is required
+ * @thread: The local thread number to get the hardware ID for.
+ *
+ * Return: The hardware ID for the CPU node or ~0ULL if not found.
+ */
+u64 of_get_cpu_hwid(struct device_node *cpun, unsigned int thread)
+{
+	const __be32 *cell;
+	int ac, len;
+
+	ac = of_n_addr_cells(cpun);
+	cell = of_get_property(cpun, "reg", &len);
+	if (!cell || !ac || ((sizeof(*cell) * ac * (thread + 1)) > len))
+		return ~0ULL;
+
+	cell += ac * thread;
+	return of_read_number(cell, ac);
+}
+
+/*
+ * arch_match_cpu_phys_id - Match the given logical CPU and physical id
+ *
+ * @cpu: logical cpu index of a core/thread
+ * @phys_id: physical identifier of a core/thread
+ *
+ * CPU logical to physical index mapping is architecture specific.
+ * However this __weak function provides a default match of physical
+ * id to logical cpu index. phys_id provided here is usually values read
+ * from the device tree which must match the hardware internal registers.
+ *
+ * Returns true if the physical identifier and the logical cpu index
+ * correspond to the same core/thread, false otherwise.
+ */
+bool __weak arch_match_cpu_phys_id(int cpu, u64 phys_id)
+{
+	return (u32)phys_id == cpu;
+}
+
+/*
+ * Checks if the given "prop_name" property holds the physical id of the
+ * core/thread corresponding to the logical cpu 'cpu'. If 'thread' is not
+ * NULL, local thread number within the core is returned in it.
+ */
+static bool __of_find_n_match_cpu_property(struct device_node *cpun,
+			const char *prop_name, int cpu, unsigned int *thread)
+{
+	const __be32 *cell;
+	int ac, prop_len, tid;
+	u64 hwid;
+
+	ac = of_n_addr_cells(cpun);
+	cell = of_get_property(cpun, prop_name, &prop_len);
+	if (!cell && !ac && arch_match_cpu_phys_id(cpu, 0))
+		return true;
+	if (!cell || !ac)
+		return false;
+	prop_len /= sizeof(*cell) * ac;
+	for (tid = 0; tid < prop_len; tid++) {
+		hwid = of_read_number(cell, ac);
+		if (arch_match_cpu_phys_id(cpu, hwid)) {
+			if (thread)
+				*thread = tid;
+			return true;
+		}
+		cell += ac;
+	}
+	return false;
+}
+
+/*
+ * arch_find_n_match_cpu_physical_id - See if the given device node is
+ * for the cpu corresponding to logical cpu 'cpu'.  Return true if so,
+ * else false.  If 'thread' is non-NULL, the local thread number within the
+ * core is returned in it.
+ */
+bool __weak arch_find_n_match_cpu_physical_id(struct device_node *cpun,
+					      int cpu, unsigned int *thread)
+{
+	/* Check for non-standard "ibm,ppc-interrupt-server#s" property
+	 * for thread ids on PowerPC. If it doesn't exist fallback to
+	 * standard "reg" property.
+	 */
+	if (IS_ENABLED(CONFIG_PPC) &&
+	    __of_find_n_match_cpu_property(cpun,
+					   "ibm,ppc-interrupt-server#s",
+					   cpu, thread))
+		return true;
+
+	return __of_find_n_match_cpu_property(cpun, "reg", cpu, thread);
+}
+
+/**
+ * of_get_cpu_node - Get device node associated with the given logical CPU
+ *
+ * @cpu: CPU number(logical index) for which device node is required
+ * @thread: if not NULL, local thread number within the physical core is
+ *          returned
+ *
+ * The main purpose of this function is to retrieve the device node for the
+ * given logical CPU index. It should be used to initialize the of_node in
+ * cpu device. Once of_node in cpu device is populated, all the further
+ * references can use that instead.
+ *
+ * CPU logical to physical index mapping is architecture specific and is built
+ * before booting secondary cores. This function uses arch_match_cpu_phys_id
+ * which can be overridden by architecture specific implementation.
+ *
+ * Return: A node pointer for the logical cpu with refcount incremented, use
+ * of_node_put() on it when done. Returns NULL if not found.
+ */
+struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
+{
+	struct device_node *cpun;
+
+	for_each_of_cpu_node(cpun) {
+		if (arch_find_n_match_cpu_physical_id(cpun, cpu, thread))
+			return cpun;
+	}
+	return NULL;
+}
+EXPORT_SYMBOL(of_get_cpu_node);
+
+/**
+ * of_cpu_device_node_get: Get the CPU device_node for a given logical CPU number
+ *
+ * @cpu: The logical CPU number
+ *
+ * Return: Pointer to the device_node for CPU with its reference count
+ * incremented of the given logical CPU number or NULL if the CPU device_node
+ * is not found.
+ */
+struct device_node *of_cpu_device_node_get(int cpu)
+{
+	struct device *cpu_dev;
+	cpu_dev = get_cpu_device(cpu);
+	if (!cpu_dev)
+		return of_get_cpu_node(cpu, NULL);
+	return of_node_get(cpu_dev->of_node);
+}
+EXPORT_SYMBOL(of_cpu_device_node_get);
+
+/**
+ * of_cpu_node_to_id: Get the logical CPU number for a given device_node
+ *
+ * @cpu_node: Pointer to the device_node for CPU.
+ *
+ * Return: The logical CPU number of the given CPU device_node or -ENODEV if the
+ * CPU is not found.
+ */
+int of_cpu_node_to_id(struct device_node *cpu_node)
+{
+	int cpu;
+	bool found = false;
+	struct device_node *np;
+
+	for_each_possible_cpu(cpu) {
+		np = of_cpu_device_node_get(cpu);
+		found = (cpu_node == np);
+		of_node_put(np);
+		if (found)
+			return cpu;
+	}
+
+	return -ENODEV;
+}
+EXPORT_SYMBOL(of_cpu_node_to_id);
+
+/**
+ * of_get_cpu_state_node - Get CPU's idle state node at the given index
+ *
+ * @cpu_node: The device node for the CPU
+ * @index: The index in the list of the idle states
+ *
+ * Two generic methods can be used to describe a CPU's idle states, either via
+ * a flattened description through the "cpu-idle-states" binding or via the
+ * hierarchical layout, using the "power-domains" and the "domain-idle-states"
+ * bindings. This function check for both and returns the idle state node for
+ * the requested index.
+ *
+ * Return: An idle state node if found at @index. The refcount is incremented
+ * for it, so call of_node_put() on it when done. Returns NULL if not found.
+ */
+struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
+					  int index)
+{
+	struct of_phandle_args args;
+	int err;
+
+	err = of_parse_phandle_with_args(cpu_node, "power-domains",
+					"#power-domain-cells", 0, &args);
+	if (!err) {
+		struct device_node *state_node =
+			of_parse_phandle(args.np, "domain-idle-states", index);
+
+		of_node_put(args.np);
+		if (state_node)
+			return state_node;
+	}
+
+	return of_parse_phandle(cpu_node, "cpu-idle-states", index);
+}
+EXPORT_SYMBOL(of_get_cpu_state_node);

drivers/of/of_private.h

@@ -38,6 +38,7 @@ struct alias_prop {
 #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1
 
 extern struct mutex of_mutex;
+extern raw_spinlock_t devtree_lock;
 extern struct list_head aliases_lookup;
 extern struct kset *of_kset;
 

drivers/of/unittest-data/tests-address.dtsi

@@ -14,7 +14,7 @@ address-tests {
 			#size-cells = <1>;
 			/* ranges here is to make sure we don't use it for
 			 * dma-ranges translation */
-			ranges = <0x70000000 0x70000000 0x40000000>,
+			ranges = <0x70000000 0x70000000 0x50000000>,
 				 <0x00000000 0xd0000000 0x20000000>;
 			dma-ranges = <0x0 0x20000000 0x40000000>;
 
@@ -43,6 +43,13 @@ pci@90000000 {
 					     <0x42000000 0x0 0xc0000000 0x20000000 0x0 0x10000000>;
 			};
 
+			bus@a0000000 {
+				#address-cells = <3>;
+				#size-cells = <2>;
+				ranges = <0xf00baa 0x0 0x0 0xa0000000 0x0 0x100000>,
+					 <0xf00bee 0x1 0x0 0xb0000000 0x0 0x200000>;
+			};
+
 		};
 	};
 };

drivers/of/unittest.c

@@ -1008,6 +1008,153 @@ static void __init of_unittest_pci_dma_ranges(void)
 	of_node_put(np);
 }
 
+static void __init of_unittest_bus_ranges(void)
+{
+	struct device_node *np;
+	struct of_range range;
+	struct of_range_parser parser;
+	struct resource res;
+	int ret, count, i = 0;
+
+	np = of_find_node_by_path("/testcase-data/address-tests");
+	if (!np) {
+		pr_err("missing testcase data\n");
+		return;
+	}
+
+	if (of_range_parser_init(&parser, np)) {
+		pr_err("missing ranges property\n");
+		return;
+	}
+
+	ret = of_range_to_resource(np, 1, &res);
+	unittest(!ret, "of_range_to_resource returned error (%d) node %pOF\n",
+		ret, np);
+	unittest(resource_type(&res) == IORESOURCE_MEM,
+		"of_range_to_resource wrong resource type on node %pOF res=%pR\n",
+		np, &res);
+	unittest(res.start == 0xd0000000,
+		"of_range_to_resource wrong resource start address on node %pOF res=%pR\n",
+		np, &res);
+	unittest(resource_size(&res) == 0x20000000,
+		"of_range_to_resource wrong resource start address on node %pOF res=%pR\n",
+		np, &res);
+
+	count = of_range_count(&parser);
+	unittest(count == 2,
+		"of_range_count wrong size on node %pOF count=%d\n",
+		np, count);
+
+	/*
+	 * Get the "ranges" from the device tree
+	 */
+	for_each_of_range(&parser, &range) {
+		unittest(range.flags == IORESOURCE_MEM,
+			"for_each_of_range wrong flags on node %pOF flags=%x (expected %x)\n",
+			np, range.flags, IORESOURCE_MEM);
+		if (!i) {
+			unittest(range.size == 0x50000000,
+				 "for_each_of_range wrong size on node %pOF size=%llx\n",
+				 np, range.size);
+			unittest(range.cpu_addr == 0x70000000,
+				 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
+				 range.cpu_addr, np);
+			unittest(range.bus_addr == 0x70000000,
+				 "for_each_of_range wrong bus addr (%llx) on node %pOF",
+				 range.pci_addr, np);
+		} else {
+			unittest(range.size == 0x20000000,
+				 "for_each_of_range wrong size on node %pOF size=%llx\n",
+				 np, range.size);
+			unittest(range.cpu_addr == 0xd0000000,
+				 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
+				 range.cpu_addr, np);
+			unittest(range.bus_addr == 0x00000000,
+				 "for_each_of_range wrong bus addr (%llx) on node %pOF",
+				 range.pci_addr, np);
+		}
+		i++;
+	}
+
+	of_node_put(np);
+}
+
+static void __init of_unittest_bus_3cell_ranges(void)
+{
+	struct device_node *np;
+	struct of_range range;
+	struct of_range_parser parser;
+	int i = 0;
+
+	np = of_find_node_by_path("/testcase-data/address-tests/bus@a0000000");
+	if (!np) {
+		pr_err("missing testcase data\n");
+		return;
+	}
+
+	if (of_range_parser_init(&parser, np)) {
+		pr_err("missing ranges property\n");
+		return;
+	}
+
+	/*
+	 * Get the "ranges" from the device tree
+	 */
+	for_each_of_range(&parser, &range) {
+		if (!i) {
+			unittest(range.flags == 0xf00baa,
+				 "for_each_of_range wrong flags on node %pOF flags=%x\n",
+				 np, range.flags);
+			unittest(range.size == 0x100000,
+				 "for_each_of_range wrong size on node %pOF size=%llx\n",
+				 np, range.size);
+			unittest(range.cpu_addr == 0xa0000000,
+				 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
+				 range.cpu_addr, np);
+			unittest(range.bus_addr == 0x0,
+				 "for_each_of_range wrong bus addr (%llx) on node %pOF",
+				 range.pci_addr, np);
+		} else {
+			unittest(range.flags == 0xf00bee,
+				 "for_each_of_range wrong flags on node %pOF flags=%x\n",
+				 np, range.flags);
+			unittest(range.size == 0x200000,
+				 "for_each_of_range wrong size on node %pOF size=%llx\n",
+				 np, range.size);
+			unittest(range.cpu_addr == 0xb0000000,
+				 "for_each_of_range wrong CPU addr (%llx) on node %pOF",
+				 range.cpu_addr, np);
+			unittest(range.bus_addr == 0x100000000,
+				 "for_each_of_range wrong bus addr (%llx) on node %pOF",
+				 range.pci_addr, np);
+		}
+		i++;
+	}
+
+	of_node_put(np);
+}
+
+static void __init of_unittest_reg(void)
+{
+	struct device_node *np;
+	int ret;
+	u64 addr, size;
+
+	np = of_find_node_by_path("/testcase-data/address-tests/bus@80000000/device@1000");
+	if (!np) {
+		pr_err("missing testcase data\n");
+		return;
+	}
+
+	ret = of_property_read_reg(np, 0, &addr, &size);
+	unittest(!ret, "of_property_read_reg(%pOF) returned error %d\n",
+		np, ret);
+	unittest(addr == 0x1000, "of_property_read_reg(%pOF) untranslated address (%llx) incorrect\n",
+		np, addr);
+
+	of_node_put(np);
+}
+
 static void __init of_unittest_parse_interrupts(void)
 {
 	struct device_node *np;
@@ -3635,6 +3782,9 @@ static int __init of_unittest(void)
 	of_unittest_dma_get_max_cpu_address();
 	of_unittest_parse_dma_ranges();
 	of_unittest_pci_dma_ranges();
+	of_unittest_bus_ranges();
+	of_unittest_bus_3cell_ranges();
+	of_unittest_reg();
 	of_unittest_match_node();
 	of_unittest_platform_populate();
 	of_unittest_overlay();

drivers/opp/of.c

@@ -13,7 +13,7 @@
 #include <linux/cpu.h>
 #include <linux/errno.h>
 #include <linux/device.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/pm_domain.h>
 #include <linux/slab.h>
 #include <linux/export.h>

drivers/sbus/char/display7seg.c

@@ -200,9 +200,8 @@ static int d7s_probe(struct platform_device *op)
 	 */
 	regs = readb(p->regs);
 	opts = of_find_node_by_path("/options");
-	if (opts &&
+	if (opts)
-	    of_get_property(opts, "d7s-flipped?", NULL))
+	    p->flipped = of_property_read_bool(opts, "d7s-flipped?");
-		p->flipped = true;
 
 	if (p->flipped)
 		regs |= D7S_FLIP;

drivers/soc/mediatek/mtk-svs.c

@@ -7,6 +7,7 @@
 #include <linux/bits.h>
 #include <linux/clk.h>
 #include <linux/completion.h>
+#include <linux/cpu.h>
 #include <linux/cpuidle.h>
 #include <linux/debugfs.h>
 #include <linux/device.h>

drivers/thermal/cpuidle_cooling.c

@@ -7,12 +7,13 @@
  */
 #define pr_fmt(fmt) "cpuidle cooling: " fmt
 
+#include <linux/cpu.h>
 #include <linux/cpu_cooling.h>
 #include <linux/cpuidle.h>
 #include <linux/device.h>
 #include <linux/err.h>
 #include <linux/idle_inject.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/slab.h>
 #include <linux/thermal.h>
 

drivers/virt/fsl_hypervisor.c

@@ -796,7 +796,7 @@ static int has_fsl_hypervisor(void)
 	if (!node)
 		return 0;
 
-	ret = of_find_property(node, "fsl,hv-version", NULL) != NULL;
+	ret = of_property_present(node, "fsl,hv-version");
 
 	of_node_put(node);
 

drivers/w1/masters/w1-gpio.c

@@ -87,7 +87,7 @@ static int w1_gpio_probe(struct platform_device *pdev)
 		 * driver it high/low like we are in full control of the line and
 		 * open drain will happen transparently.
 		 */
-		if (of_get_property(np, "linux,open-drain", NULL))
+		if (of_property_present(np, "linux,open-drain"))
 			gflags = GPIOD_OUT_LOW;
 
 		pdev->dev.platform_data = pdata;

include/linux/cpufreq.h

@@ -15,7 +15,6 @@
 #include <linux/kobject.h>
 #include <linux/notifier.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/pm_opp.h>
 #include <linux/pm_qos.h>
 #include <linux/spinlock.h>

include/linux/of.h

@@ -16,14 +16,10 @@
 #include <linux/errno.h>
 #include <linux/kobject.h>
 #include <linux/mod_devicetable.h>
-#include <linux/spinlock.h>
-#include <linux/topology.h>
-#include <linux/notifier.h>
 #include <linux/property.h>
 #include <linux/list.h>
 
 #include <asm/byteorder.h>
-#include <asm/errno.h>
 
 typedef u32 phandle;
 typedef u32 ihandle;
@@ -145,7 +141,6 @@ extern struct device_node *of_root;
 extern struct device_node *of_chosen;
 extern struct device_node *of_aliases;
 extern struct device_node *of_stdout;
-extern raw_spinlock_t devtree_lock;
 
 /*
  * struct device_node flag descriptions
@@ -361,6 +356,8 @@ extern const void *of_get_property(const struct device_node *node,
 				const char *name,
 				int *lenp);
 extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
+extern struct device_node *of_cpu_device_node_get(int cpu);
+extern int of_cpu_node_to_id(struct device_node *np);
 extern struct device_node *of_get_next_cpu_node(struct device_node *prev);
 extern struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
 						 int index);
@@ -373,6 +370,7 @@ extern int of_n_addr_cells(struct device_node *np);
 extern int of_n_size_cells(struct device_node *np);
 extern const struct of_device_id *of_match_node(
 	const struct of_device_id *matches, const struct device_node *node);
+extern const void *of_device_get_match_data(const struct device *dev);
 extern int of_modalias_node(struct device_node *node, char *modalias, int len);
 extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args);
 extern int __of_parse_phandle_with_args(const struct device_node *np,
@@ -439,8 +437,6 @@ const char *of_prop_next_string(struct property *prop, const char *cur);
 
 bool of_console_check(struct device_node *dn, char *name, int index);
 
-extern int of_cpu_node_to_id(struct device_node *np);
-
 int of_map_id(struct device_node *np, u32 id,
 	       const char *map_name, const char *map_mask_name,
 	       struct device_node **target, u32 *id_out);
@@ -635,6 +631,16 @@ static inline struct device_node *of_get_cpu_node(int cpu,
 	return NULL;
 }
 
+static inline struct device_node *of_cpu_device_node_get(int cpu)
+{
+	return NULL;
+}
+
+static inline int of_cpu_node_to_id(struct device_node *np)
+{
+	return -ENODEV;
+}
+
 static inline struct device_node *of_get_next_cpu_node(struct device_node *prev)
 {
 	return NULL;
@@ -837,11 +843,6 @@ static inline void of_property_clear_flag(struct property *p, unsigned long flag
 {
 }
 
-static inline int of_cpu_node_to_id(struct device_node *np)
-{
-	return -ENODEV;
-}
-
 static inline int of_map_id(struct device_node *np, u32 id,
 			     const char *map_name, const char *map_mask_name,
 			     struct device_node **target, u32 *id_out)
@@ -854,6 +855,11 @@ static inline phys_addr_t of_dma_get_max_cpu_address(struct device_node *np)
 	return PHYS_ADDR_MAX;
 }
 
+static inline const void *of_device_get_match_data(const struct device *dev)
+{
+	return NULL;
+}
+
 #define of_match_ptr(_ptr)	NULL
 #define of_match_node(_matches, _node)	NULL
 #endif /* CONFIG_OF */
@@ -1512,6 +1518,8 @@ enum of_reconfig_change {
 	OF_RECONFIG_CHANGE_REMOVE,
 };
 
+struct notifier_block;
+
 #ifdef CONFIG_OF_DYNAMIC
 extern int of_reconfig_notifier_register(struct notifier_block *);
 extern int of_reconfig_notifier_unregister(struct notifier_block *);

include/linux/of_address.h

@@ -35,6 +35,22 @@ struct of_pci_range {
 	for (; of_pci_range_parser_one(parser, range);)
 #define for_each_of_range for_each_of_pci_range
 
+/*
+ * of_range_count - Get the number of "ranges" or "dma-ranges" entries
+ * @parser:	Parser state initialized by of_range_parser_init()
+ *
+ * Returns the number of entries or 0 if none.
+ *
+ * Note that calling this within or after the for_each_of_range() iterator will
+ * be inaccurate giving the number of entries remaining.
+ */
+static inline int of_range_count(const struct of_range_parser *parser)
+{
+	if (!parser || !parser->node || !parser->range || parser->range == parser->end)
+		return 0;
+	return (parser->end - parser->range) / (parser->na + parser->pna + parser->ns);
+}
+
 /* Translate a DMA address from device space to CPU space */
 extern u64 of_translate_dma_address(struct device_node *dev,
 				    const __be32 *in_addr);
@@ -56,6 +72,8 @@ void __iomem *of_io_request_and_map(struct device_node *device,
 extern const __be32 *__of_get_address(struct device_node *dev, int index, int bar_no,
 				      u64 *size, unsigned int *flags);
 
+int of_property_read_reg(struct device_node *np, int idx, u64 *addr, u64 *size);
+
 extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,
 			struct device_node *node);
 extern int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,
@@ -68,6 +86,8 @@ extern int of_pci_address_to_resource(struct device_node *dev, int bar,
 extern int of_pci_range_to_resource(struct of_pci_range *range,
 				    struct device_node *np,
 				    struct resource *res);
+extern int of_range_to_resource(struct device_node *np, int index,
+				struct resource *res);
 extern bool of_dma_is_coherent(struct device_node *np);
 #else /* CONFIG_OF_ADDRESS */
 static inline void __iomem *of_io_request_and_map(struct device_node *device,
@@ -88,6 +108,11 @@ static inline const __be32 *__of_get_address(struct device_node *dev, int index,
 	return NULL;
 }
 
+static inline int of_property_read_reg(struct device_node *np, int idx, u64 *addr, u64 *size)
+{
+	return -ENOSYS;
+}
+
 static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,
 			struct device_node *node)
 {
@@ -120,6 +145,12 @@ static inline int of_pci_range_to_resource(struct of_pci_range *range,
 	return -ENOSYS;
 }
 
+static inline int of_range_to_resource(struct device_node *np, int index,
+				       struct resource *res)
+{
+	return -ENOSYS;
+}
+
 static inline bool of_dma_is_coherent(struct device_node *np)
 {
 	return false;

include/linux/of_device.h

@@ -2,14 +2,14 @@
 #ifndef _LINUX_OF_DEVICE_H
 #define _LINUX_OF_DEVICE_H
 
-#include <linux/cpu.h>
 #include <linux/platform_device.h>
 #include <linux/of_platform.h> /* temporary until merge */
 
 #include <linux/of.h>
-#include <linux/mod_devicetable.h>
 
 struct device;
+struct of_device_id;
+struct kobj_uevent_env;
 
 #ifdef CONFIG_OF
 extern const struct of_device_id *of_match_device(
@@ -26,27 +26,12 @@ static inline int of_driver_match_device(struct device *dev,
 	return of_match_device(drv->of_match_table, dev) != NULL;
 }
 
-extern int of_device_add(struct platform_device *pdev);
-extern int of_device_register(struct platform_device *ofdev);
-extern void of_device_unregister(struct platform_device *ofdev);
-
-extern const void *of_device_get_match_data(const struct device *dev);
-
 extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
 extern int of_device_request_module(struct device *dev);
 
 extern void of_device_uevent(const struct device *dev, struct kobj_uevent_env *env);
 extern int of_device_uevent_modalias(const struct device *dev, struct kobj_uevent_env *env);
 
-static inline struct device_node *of_cpu_device_node_get(int cpu)
-{
-	struct device *cpu_dev;
-	cpu_dev = get_cpu_device(cpu);
-	if (!cpu_dev)
-		return of_get_cpu_node(cpu, NULL);
-	return of_node_get(cpu_dev->of_node);
-}
-
 int of_dma_configure_id(struct device *dev,
 		     struct device_node *np,
 		     bool force_dma, const u32 *id);
@@ -67,11 +52,6 @@ static inline int of_driver_match_device(struct device *dev,
 static inline void of_device_uevent(const struct device *dev,
 			struct kobj_uevent_env *env) { }
 
-static inline const void *of_device_get_match_data(const struct device *dev)
-{
-	return NULL;
-}
-
 static inline int of_device_modalias(struct device *dev,
 				     char *str, ssize_t len)
 {
@@ -95,11 +75,6 @@ static inline const struct of_device_id *of_match_device(
 	return NULL;
 }
 
-static inline struct device_node *of_cpu_device_node_get(int cpu)
-{
-	return NULL;
-}
-
 static inline int of_dma_configure_id(struct device *dev,
 				      struct device_node *np,
 				      bool force_dma,

include/linux/of_platform.h

@@ -6,12 +6,13 @@
  *			 <benh@kernel.crashing.org>
  */
 
-#include <linux/device.h>
 #include <linux/mod_devicetable.h>
-#include <linux/pm.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 
+struct device;
+struct of_device_id;
+
 /**
  * struct of_dev_auxdata - lookup table entry for device names & platform_data
  * @compatible: compatible value of node to match against node
@@ -52,6 +53,11 @@ extern const struct of_device_id of_default_bus_match_table[];
 extern struct platform_device *of_device_alloc(struct device_node *np,
 					 const char *bus_id,
 					 struct device *parent);
+
+extern int of_device_add(struct platform_device *pdev);
+extern int of_device_register(struct platform_device *ofdev);
+extern void of_device_unregister(struct platform_device *ofdev);
+
 #ifdef CONFIG_OF
 extern struct platform_device *of_find_device_by_node(struct device_node *np);
 #else