Merge tag 'vexpress/updates-for-3.16' of git://git.linaro.org/people/pawel.moll/linux into next/cleanup

Merge "ARM Versatile Express updates for 3.16" from Pawel Moll:

This series reworks VE's platform configuration infrastructure by:

- making it possible to instantiate selected devices from the
  Device Tree, prior to massive population,
- converting custom "func" API into standard "regmap",
- splitting the existing MFD driver into smaller ones and placing
  them into relevant directories.

The common clock framework driver can now be selected individually
(mostly for arm64 sake, where some of them are not used at all).

It also simplifies the machine code, by:

- moving the shed clock info clocksource driver,
- simplifying SMP operations to base them entirely of the DT data,
- moving platform ID checks into relevant driver.

* tag 'vexpress/updates-for-3.16' of git://git.linaro.org/people/pawel.moll/linux:
  ARM: vexpress: move HBI check to sysreg driver
  ARM: vexpress: Simplify SMP operations for DT-powered system
  ARM: vexpress: remove redundant vexpress_dt_cpus_num to get cpu count
  clocksource: Sched clock source for Versatile Express
  clk: versatile: Split config options for sp810 and vexpress_osc
  mfd: vexpress: Define the device as MFD cells
  mfd: syscon: Add platform data with a regmap config name
  mfd: vexpress: Convert custom func API to regmap
  of: Keep track of populated platform devices
  + Linux 3.15-rc5

Signed-off-by: Olof Johansson <olof@lixom.net>

18 files changed, 84 insertions, 87 deletions

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 3b9bfdb83ba6..3c7ec327ebd2 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -221,6 +221,8 @@ struct dentry_operations {
 #define DCACHE_SYMLINK_TYPE		0x00300000 /* Symlink */
 #define DCACHE_FILE_TYPE		0x00400000 /* Other file type */
 
+#define DCACHE_MAY_FREE			0x00800000
+
 extern seqlock_t rename_lock;
 
 static inline int dname_external(const struct dentry *dentry)
diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h
index 9212b017bc72..ae9504b4b67d 100644
--- a/include/linux/ftrace.h
+++ b/include/linux/ftrace.h
@@ -535,6 +535,7 @@ static inline int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_a
 extern int ftrace_arch_read_dyn_info(char *buf, int size);
 
 extern int skip_trace(unsigned long ip);
+extern void ftrace_module_init(struct module *mod);
 
 extern void ftrace_disable_daemon(void);
 extern void ftrace_enable_daemon(void);
@@ -544,6 +545,7 @@ static inline int ftrace_force_update(void) { return 0; }
 static inline void ftrace_disable_daemon(void) { }
 static inline void ftrace_enable_daemon(void) { }
 static inline void ftrace_release_mod(struct module *mod) {}
+static inline void ftrace_module_init(struct module *mod) {}
 static inline __init int register_ftrace_command(struct ftrace_func_command *cmd)
 {
 	return -EINVAL;
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 5b337cf8fb86..b65166de1d9d 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -412,6 +412,16 @@ static inline spinlock_t *huge_pte_lockptr(struct hstate *h,
 	return &mm->page_table_lock;
 }
 
+static inline bool hugepages_supported(void)
+{
+	/*
+	 * Some platform decide whether they support huge pages at boot
+	 * time. On these, such as powerpc, HPAGE_SHIFT is set to 0 when
+	 * there is no such support
+	 */
+	return HPAGE_SHIFT != 0;
+}
+
 #else	/* CONFIG_HUGETLB_PAGE */
 struct hstate {};
 #define alloc_huge_page_node(h, nid) NULL
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 8834a7e5b944..97ac926c78a7 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -210,7 +210,7 @@ extern int __irq_set_affinity(unsigned int irq, const struct cpumask *cpumask,
 /**
  * irq_set_affinity - Set the irq affinity of a given irq
  * @irq:	Interrupt to set affinity
- * @mask:	cpumask
+ * @cpumask:	cpumask
  *
  * Fails if cpumask does not contain an online CPU
  */
@@ -223,7 +223,7 @@ irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
 /**
  * irq_force_affinity - Force the irq affinity of a given irq
  * @irq:	Interrupt to set affinity
- * @mask:	cpumask
+ * @cpumask:	cpumask
  *
  * Same as irq_set_affinity, but without checking the mask against
  * online cpus.
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 10a0b1ac4ea0..5c57efb863d0 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -603,6 +603,8 @@ static inline u32 irq_get_trigger_type(unsigned int irq)
 	return d ? irqd_get_trigger_type(d) : 0;
 }
 
+unsigned int arch_dynirq_lower_bound(unsigned int from);
+
 int __irq_alloc_descs(int irq, unsigned int from, unsigned int cnt, int node,
 		struct module *owner);
 
diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index 34a513a2727b..a6a42dd02466 100644
--- a/include/linux/linkage.h
+++ b/include/linux/linkage.h
@@ -12,9 +12,9 @@
 #endif
 
 #ifdef __cplusplus
-#define CPP_ASMLINKAGE extern "C" __visible
+#define CPP_ASMLINKAGE extern "C"
 #else
-#define CPP_ASMLINKAGE __visible
+#define CPP_ASMLINKAGE
 #endif
 
 #ifndef asmlinkage
diff --git a/include/linux/mfd/rtsx_common.h b/include/linux/mfd/rtsx_common.h
index 7c36cc55d2c7..443176ee1ab0 100644
--- a/include/linux/mfd/rtsx_common.h
+++ b/include/linux/mfd/rtsx_common.h
@@ -45,7 +45,6 @@ struct platform_device;
 struct rtsx_slot {
 	struct platform_device	*p_dev;
 	void			(*card_event)(struct platform_device *p_dev);
-	void			(*done_transfer)(struct platform_device *p_dev);
 };
 
 #endif
diff --git a/include/linux/mfd/rtsx_pci.h b/include/linux/mfd/rtsx_pci.h
index 8d6bbd609ad9..a3835976f7c6 100644
--- a/include/linux/mfd/rtsx_pci.h
+++ b/include/linux/mfd/rtsx_pci.h
@@ -943,12 +943,6 @@ void rtsx_pci_send_cmd_no_wait(struct rtsx_pcr *pcr);
 int rtsx_pci_send_cmd(struct rtsx_pcr *pcr, int timeout);
 int rtsx_pci_transfer_data(struct rtsx_pcr *pcr, struct scatterlist *sglist,
 		int num_sg, bool read, int timeout);
-int rtsx_pci_dma_map_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
-		int num_sg, bool read);
-int rtsx_pci_dma_unmap_sg(struct rtsx_pcr *pcr, struct scatterlist *sglist,
-		int num_sg, bool read);
-int rtsx_pci_dma_transfer(struct rtsx_pcr *pcr, struct scatterlist *sglist,
-		int sg_count, bool read);
 int rtsx_pci_read_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len);
 int rtsx_pci_write_ppbuf(struct rtsx_pcr *pcr, u8 *buf, int buf_len);
 int rtsx_pci_card_pull_ctl_enable(struct rtsx_pcr *pcr, int card);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index bf9811e1321a..d6777060449f 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -370,6 +370,8 @@ static inline int is_vmalloc_or_module_addr(const void *x)
 }
 #endif
 
+extern void kvfree(const void *addr);
+
 static inline void compound_lock(struct page *page)
 {
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
diff --git a/include/linux/netlink.h b/include/linux/netlink.h
index aad8eeaf416d..f64b01787ddc 100644
--- a/include/linux/netlink.h
+++ b/include/linux/netlink.h
@@ -169,4 +169,11 @@ struct netlink_tap {
 extern int netlink_add_tap(struct netlink_tap *nt);
 extern int netlink_remove_tap(struct netlink_tap *nt);
 
+bool __netlink_ns_capable(const struct netlink_skb_parms *nsp,
+			  struct user_namespace *ns, int cap);
+bool netlink_ns_capable(const struct sk_buff *skb,
+			struct user_namespace *ns, int cap);
+bool netlink_capable(const struct sk_buff *skb, int cap);
+bool netlink_net_capable(const struct sk_buff *skb, int cap);
+
 #endif	/* __LINUX_NETLINK_H */
diff --git a/include/linux/of.h b/include/linux/of.h
index 3bad8d106e0e..4c50d0b78b89 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -130,6 +130,12 @@ static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
 	return test_bit(flag, &n->_flags);
 }
 
+static inline int of_node_test_and_set_flag(struct device_node *n,
+					    unsigned long flag)
+{
+	return test_and_set_bit(flag, &n->_flags);
+}
+
 static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
 {
 	set_bit(flag, &n->_flags);
@@ -197,6 +203,7 @@ static inline unsigned long of_read_ulong(const __be32 *cell, int size)
 /* flag descriptions */
 #define OF_DYNAMIC	1 /* node and properties were allocated via kmalloc */
 #define OF_DETACHED	2 /* node has been detached from the device tree */
+#define OF_POPULATED	3 /* device already created for the node */
 
 #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
 #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 3f23b4472c31..6404253d810d 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -44,11 +44,16 @@ extern void of_irq_init(const struct of_device_id *matches);
 
 #ifdef CONFIG_OF_IRQ
 extern int of_irq_count(struct device_node *dev);
+extern int of_irq_get(struct device_node *dev, int index);
 #else
 static inline int of_irq_count(struct device_node *dev)
 {
 	return 0;
 }
+static inline int of_irq_get(struct device_node *dev, int index)
+{
+	return 0;
+}
 #endif
 
 #if defined(CONFIG_OF)
diff --git a/include/linux/of_platform.h b/include/linux/of_platform.h
index 05cb4a928252..b1010eeaac0d 100644
--- a/include/linux/of_platform.h
+++ b/include/linux/of_platform.h
@@ -72,6 +72,7 @@ extern int of_platform_populate(struct device_node *root,
 				const struct of_device_id *matches,
 				const struct of_dev_auxdata *lookup,
 				struct device *parent);
+extern int of_platform_depopulate(struct device *parent);
 #else
 static inline int of_platform_populate(struct device_node *root,
 					const struct of_device_id *matches,
@@ -80,6 +81,10 @@ static inline int of_platform_populate(struct device_node *root,
 {
 	return -ENODEV;
 }
+static inline int of_platform_depopulate(struct device *parent)
+{
+	return -ENODEV;
+}
 #endif
 
 #endif	/* _LINUX_OF_PLATFORM_H */
diff --git a/include/linux/platform_data/syscon.h b/include/linux/platform_data/syscon.h
new file mode 100644
index 000000000000..2354c6fa3726
--- /dev/null
+++ b/include/linux/platform_data/syscon.h
@@ -0,0 +1,8 @@
+#ifndef PLATFORM_DATA_SYSCON_H
+#define PLATFORM_DATA_SYSCON_H
+
+struct syscon_platform_data {
+	const char *label;
+};
+
+#endif
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index f2f7398848cf..d82abd40a3c0 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -101,4 +101,13 @@ struct kmem_cache {
 	struct kmem_cache_node *node[MAX_NUMNODES];
 };
 
+#ifdef CONFIG_SYSFS
+#define SLAB_SUPPORTS_SYSFS
+void sysfs_slab_remove(struct kmem_cache *);
+#else
+static inline void sysfs_slab_remove(struct kmem_cache *s)
+{
+}
+#endif
+
 #endif /* _LINUX_SLUB_DEF_H */
diff --git a/include/linux/sock_diag.h b/include/linux/sock_diag.h
index 54f91d35e5fd..46cca4c06848 100644
--- a/include/linux/sock_diag.h
+++ b/include/linux/sock_diag.h
@@ -23,7 +23,7 @@ int sock_diag_check_cookie(void *sk, __u32 *cookie);
 void sock_diag_save_cookie(void *sk, __u32 *cookie);
 
 int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attr);
-int sock_diag_put_filterinfo(struct user_namespace *user_ns, struct sock *sk,
+int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
 			     struct sk_buff *skb, int attrtype);
 
 #endif
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 036cccd80d9f..1c3316a47d7e 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -61,7 +61,6 @@ struct tty_bufhead {
 	struct tty_buffer *head;	/* Queue head */
 	struct work_struct work;
 	struct mutex	   lock;
-	spinlock_t	   flush_lock;
 	atomic_t	   priority;
 	struct tty_buffer sentinel;
 	struct llist_head free;		/* Free queue head */
diff --git a/include/linux/vexpress.h b/include/linux/vexpress.h
index 617c01b8f74a..a4c9547aae64 100644
--- a/include/linux/vexpress.h
+++ b/include/linux/vexpress.h
@@ -15,28 +15,15 @@
 #define _LINUX_VEXPRESS_H
 
 #include <linux/device.h>
+#include <linux/platform_device.h>
 #include <linux/reboot.h>
+#include <linux/regmap.h>
 
 #define VEXPRESS_SITE_MB		0
 #define VEXPRESS_SITE_DB1		1
 #define VEXPRESS_SITE_DB2		2
 #define VEXPRESS_SITE_MASTER		0xf
 
-#define VEXPRESS_CONFIG_STATUS_DONE	0
-#define VEXPRESS_CONFIG_STATUS_WAIT	1
-
-#define VEXPRESS_GPIO_MMC_CARDIN	0
-#define VEXPRESS_GPIO_MMC_WPROT		1
-#define VEXPRESS_GPIO_FLASH_WPn		2
-#define VEXPRESS_GPIO_LED0		3
-#define VEXPRESS_GPIO_LED1		4
-#define VEXPRESS_GPIO_LED2		5
-#define VEXPRESS_GPIO_LED3		6
-#define VEXPRESS_GPIO_LED4		7
-#define VEXPRESS_GPIO_LED5		8
-#define VEXPRESS_GPIO_LED6		9
-#define VEXPRESS_GPIO_LED7		10
-
 #define VEXPRESS_RES_FUNC(_site, _func)	\
 {					\
 	.start = (_site),		\
@@ -44,84 +31,43 @@
 	.flags = IORESOURCE_BUS,	\
 }
 
-/* Config bridge API */
+/* Config infrastructure */
 
-/**
- * struct vexpress_config_bridge_info - description of the platform
- * configuration infrastructure bridge.
- *
- * @name:	Bridge name
- *
- * @func_get:	Obtains pointer to a configuration function for a given
- *		device or a Device Tree node, to be used with @func_put
- *		and @func_exec. The node pointer should take precedence
- *		over device pointer when both are passed.
- *
- * @func_put:	Tells the bridge that the function will not be used any
- *		more, so all allocated resources can be released.
- *
- * @func_exec:	Executes a configuration function read or write operation.
- *		The offset selects a 32 bit word of the value accessed.
- *		Must return VEXPRESS_CONFIG_STATUS_DONE when operation
- *		is finished immediately, VEXPRESS_CONFIG_STATUS_WAIT when
- *		will be completed in some time or negative value in case
- *		of error.
- */
-struct vexpress_config_bridge_info {
-	const char *name;
-	void *(*func_get)(struct device *dev, struct device_node *node);
-	void (*func_put)(void *func);
-	int (*func_exec)(void *func, int offset, bool write, u32 *data);
-};
+void vexpress_config_set_master(u32 site);
+u32 vexpress_config_get_master(void);
 
-struct vexpress_config_bridge;
+void vexpress_config_lock(void *arg);
+void vexpress_config_unlock(void *arg);
 
-struct vexpress_config_bridge *vexpress_config_bridge_register(
-		struct device_node *node,
-		struct vexpress_config_bridge_info *info);
-void vexpress_config_bridge_unregister(struct vexpress_config_bridge *bridge);
+int vexpress_config_get_topo(struct device_node *node, u32 *site,
+		u32 *position, u32 *dcc);
 
-void vexpress_config_complete(struct vexpress_config_bridge *bridge,
-		int status);
+/* Config bridge API */
 
-/* Config function API */
+struct vexpress_config_bridge_ops {
+	struct regmap * (*regmap_init)(struct device *dev, void *context);
+	void (*regmap_exit)(struct regmap *regmap, void *context);
+};
 
-struct vexpress_config_func;
+struct device *vexpress_config_bridge_register(struct device *parent,
+		struct vexpress_config_bridge_ops *ops, void *context);
 
-struct vexpress_config_func *__vexpress_config_func_get(struct device *dev,
-		struct device_node *node);
-#define vexpress_config_func_get_by_dev(dev) \
-		__vexpress_config_func_get(dev, NULL)
-#define vexpress_config_func_get_by_node(node) \
-		__vexpress_config_func_get(NULL, node)
-void vexpress_config_func_put(struct vexpress_config_func *func);
+/* Config regmap API */
 
-/* Both may sleep! */
-int vexpress_config_read(struct vexpress_config_func *func, int offset,
-		u32 *data);
-int vexpress_config_write(struct vexpress_config_func *func, int offset,
-		u32 data);
+struct regmap *devm_regmap_init_vexpress_config(struct device *dev);
 
 /* Platform control */
 
+unsigned int vexpress_get_mci_cardin(struct device *dev);
 u32 vexpress_get_procid(int site);
-u32 vexpress_get_hbi(int site);
 void *vexpress_get_24mhz_clock_base(void);
 void vexpress_flags_set(u32 data);
 
-#define vexpress_get_site_by_node(node) __vexpress_get_site(NULL, node)
-#define vexpress_get_site_by_dev(dev) __vexpress_get_site(dev, NULL)
-unsigned __vexpress_get_site(struct device *dev, struct device_node *node);
-
 void vexpress_sysreg_early_init(void __iomem *base);
-void vexpress_sysreg_of_early_init(void);
+int vexpress_syscfg_device_register(struct platform_device *pdev);
 
 /* Clocks */
 
-struct clk *vexpress_osc_setup(struct device *dev);
-void vexpress_osc_of_setup(struct device_node *node);
-
 void vexpress_clk_init(void __iomem *sp810_base);
-void vexpress_clk_of_init(void);
 
 #endif