Merge tag 'char-misc-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the big set of char, misc, and other assorted driver subsystem
  patches for 5.10-rc1.

  There's a lot of different things in here, all over the drivers/
  directory. Some summaries:

   - soundwire driver updates

   - habanalabs driver updates

   - extcon driver updates

   - nitro_enclaves new driver

   - fsl-mc driver and core updates

   - mhi core and bus updates

   - nvmem driver updates

   - eeprom driver updates

   - binder driver updates and fixes

   - vbox minor bugfixes

   - fsi driver updates

   - w1 driver updates

   - coresight driver updates

   - interconnect driver updates

   - misc driver updates

   - other minor driver updates

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (396 commits)
  binder: fix UAF when releasing todo list
  docs: w1: w1_therm: Fix broken xref, mistakes, clarify text
  misc: Kconfig: fix a HISI_HIKEY_USB dependency
  LSM: Fix type of id parameter in kernel_post_load_data prototype
  misc: Kconfig: add a new dependency for HISI_HIKEY_USB
  firmware_loader: fix a kernel-doc markup
  w1: w1_therm: make w1_poll_completion static
  binder: simplify the return expression of binder_mmap
  test_firmware: Test partial read support
  firmware: Add request_partial_firmware_into_buf()
  firmware: Store opt_flags in fw_priv
  fs/kernel_file_read: Add "offset" arg for partial reads
  IMA: Add support for file reads without contents
  LSM: Add "contents" flag to kernel_read_file hook
  module: Call security_kernel_post_load_data()
  firmware_loader: Use security_post_load_data()
  LSM: Introduce kernel_post_load_data() hook
  fs/kernel_read_file: Add file_size output argument
  fs/kernel_read_file: Switch buffer size arg to size_t
  fs/kernel_read_file: Remove redundant size argument
  ...

1 files changed, 92 insertions, 11 deletions

diff --git a/drivers/fpga/dfl.h b/drivers/fpga/dfl.h
index a32dfba2a88b..5dc758f655b7 100644
--- a/drivers/fpga/dfl.h
+++ b/drivers/fpga/dfl.h
@@ -197,7 +197,7 @@ int dfl_fpga_check_port_id(struct platform_device *pdev, void *pport_id);
  * @id: unique dfl private feature id.
  */
 struct dfl_feature_id {
-	u64 id;
+	u16 id;
 };
 
 /**
@@ -236,16 +236,18 @@ struct dfl_feature_irq_ctx {
  * @irq_ctx: interrupt context list.
  * @nr_irqs: number of interrupt contexts.
  * @ops: ops of this sub feature.
+ * @ddev: ptr to the dfl device of this sub feature.
  * @priv: priv data of this feature.
  */
 struct dfl_feature {
 	struct platform_device *dev;
-	u64 id;
+	u16 id;
 	int resource_index;
 	void __iomem *ioaddr;
 	struct dfl_feature_irq_ctx *irq_ctx;
 	unsigned int nr_irqs;
 	const struct dfl_feature_ops *ops;
+	struct dfl_device *ddev;
 	void *priv;
 };
 
@@ -365,7 +367,7 @@ struct platform_device *dfl_fpga_inode_to_feature_dev(struct inode *inode)
 	   (feature) < (pdata)->features + (pdata)->num; (feature)++)
 
 static inline
-struct dfl_feature *dfl_get_feature_by_id(struct device *dev, u64 id)
+struct dfl_feature *dfl_get_feature_by_id(struct device *dev, u16 id)
 {
 	struct dfl_feature_platform_data *pdata = dev_get_platdata(dev);
 	struct dfl_feature *feature;
@@ -378,7 +380,7 @@ struct dfl_feature *dfl_get_feature_by_id(struct device *dev, u64 id)
 }
 
 static inline
-void __iomem *dfl_get_feature_ioaddr_by_id(struct device *dev, u64 id)
+void __iomem *dfl_get_feature_ioaddr_by_id(struct device *dev, u16 id)
 {
 	struct dfl_feature *feature = dfl_get_feature_by_id(dev, id);
 
@@ -389,7 +391,7 @@ void __iomem *dfl_get_feature_ioaddr_by_id(struct device *dev, u64 id)
 	return NULL;
 }
 
-static inline bool is_dfl_feature_present(struct device *dev, u64 id)
+static inline bool is_dfl_feature_present(struct device *dev, u16 id)
 {
 	return !!dfl_get_feature_ioaddr_by_id(dev, id);
 }
@@ -441,22 +443,17 @@ struct dfl_fpga_enum_info {
  *
  * @start: base address of this device feature list.
  * @len: size of this device feature list.
- * @ioaddr: mapped base address of this device feature list.
  * @node: node in list of device feature lists.
  */
 struct dfl_fpga_enum_dfl {
 	resource_size_t start;
 	resource_size_t len;
-
-	void __iomem *ioaddr;
-
 	struct list_head node;
 };
 
 struct dfl_fpga_enum_info *dfl_fpga_enum_info_alloc(struct device *dev);
 int dfl_fpga_enum_info_add_dfl(struct dfl_fpga_enum_info *info,
-			       resource_size_t start, resource_size_t len,
-			       void __iomem *ioaddr);
+			       resource_size_t start, resource_size_t len);
 int dfl_fpga_enum_info_add_irq(struct dfl_fpga_enum_info *info,
 			       unsigned int nr_irqs, int *irq_table);
 void dfl_fpga_enum_info_free(struct dfl_fpga_enum_info *info);
@@ -519,4 +516,88 @@ long dfl_feature_ioctl_set_irq(struct platform_device *pdev,
 			       struct dfl_feature *feature,
 			       unsigned long arg);
 
+/**
+ * enum dfl_id_type - define the DFL FIU types
+ */
+enum dfl_id_type {
+	FME_ID,
+	PORT_ID,
+	DFL_ID_MAX,
+};
+
+/**
+ * struct dfl_device_id -  dfl device identifier
+ * @type: contains 4 bits DFL FIU type of the device. See enum dfl_id_type.
+ * @feature_id: contains 12 bits feature identifier local to its DFL FIU type.
+ * @driver_data: driver specific data.
+ */
+struct dfl_device_id {
+	u8 type;
+	u16 feature_id;
+	unsigned long driver_data;
+};
+
+/**
+ * struct dfl_device - represent an dfl device on dfl bus
+ *
+ * @dev: generic device interface.
+ * @id: id of the dfl device.
+ * @type: type of DFL FIU of the device. See enum dfl_id_type.
+ * @feature_id: 16 bits feature identifier local to its DFL FIU type.
+ * @mmio_res: mmio resource of this dfl device.
+ * @irqs: list of Linux IRQ numbers of this dfl device.
+ * @num_irqs: number of IRQs supported by this dfl device.
+ * @cdev: pointer to DFL FPGA container device this dfl device belongs to.
+ * @id_entry: matched id entry in dfl driver's id table.
+ */
+struct dfl_device {
+	struct device dev;
+	int id;
+	u8 type;
+	u16 feature_id;
+	struct resource mmio_res;
+	int *irqs;
+	unsigned int num_irqs;
+	struct dfl_fpga_cdev *cdev;
+	const struct dfl_device_id *id_entry;
+};
+
+/**
+ * struct dfl_driver - represent an dfl device driver
+ *
+ * @drv: driver model structure.
+ * @id_table: pointer to table of device IDs the driver is interested in.
+ *	      { } member terminated.
+ * @probe: mandatory callback for device binding.
+ * @remove: callback for device unbinding.
+ */
+struct dfl_driver {
+	struct device_driver drv;
+	const struct dfl_device_id *id_table;
+
+	int (*probe)(struct dfl_device *dfl_dev);
+	void (*remove)(struct dfl_device *dfl_dev);
+};
+
+#define to_dfl_dev(d) container_of(d, struct dfl_device, dev)
+#define to_dfl_drv(d) container_of(d, struct dfl_driver, drv)
+
+/*
+ * use a macro to avoid include chaining to get THIS_MODULE.
+ */
+#define dfl_driver_register(drv) \
+	__dfl_driver_register(drv, THIS_MODULE)
+int __dfl_driver_register(struct dfl_driver *dfl_drv, struct module *owner);
+void dfl_driver_unregister(struct dfl_driver *dfl_drv);
+
+/*
+ * module_dfl_driver() - Helper macro for drivers that don't do
+ * anything special in module init/exit.  This eliminates a lot of
+ * boilerplate.  Each module may only use this macro once, and
+ * calling it replaces module_init() and module_exit().
+ */
+#define module_dfl_driver(__dfl_driver) \
+	module_driver(__dfl_driver, dfl_driver_register, \
+		      dfl_driver_unregister)
+
 #endif /* __FPGA_DFL_H */