Merge tag 'char-misc-4.19-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 bit set of char/misc drivers for 4.19-rc1

  There is a lot here, much more than normal, seems like everyone is
  writing new driver subsystems these days... Anyway, major things here
  are:

   - new FSI driver subsystem, yet-another-powerpc low-level hardware
     bus

   - gnss, finally an in-kernel GPS subsystem to try to tame all of the
     crazy out-of-tree drivers that have been floating around for years,
     combined with some really hacky userspace implementations. This is
     only for GNSS receivers, but you have to start somewhere, and this
     is great to see.

  Other than that, there are new slimbus drivers, new coresight drivers,
  new fpga drivers, and loads of DT bindings for all of these and
  existing drivers.

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

* tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (255 commits)
  android: binder: Rate-limit debug and userspace triggered err msgs
  fsi: sbefifo: Bump max command length
  fsi: scom: Fix NULL dereference
  misc: mic: SCIF Fix scif_get_new_port() error handling
  misc: cxl: changed asterisk position
  genwqe: card_base: Use true and false for boolean values
  misc: eeprom: assignment outside the if statement
  uio: potential double frees if __uio_register_device() fails
  eeprom: idt_89hpesx: clean up an error pointer vs NULL inconsistency
  misc: ti-st: Fix memory leak in the error path of probe()
  android: binder: Show extra_buffers_size in trace
  firmware: vpd: Fix section enabled flag on vpd_section_destroy
  platform: goldfish: Retire pdev_bus
  goldfish: Use dedicated macros instead of manual bit shifting
  goldfish: Add missing includes to goldfish.h
  mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux
  dt-bindings: mux: add adi,adgs1408
  Drivers: hv: vmbus: Cleanup synic memory free path
  Drivers: hv: vmbus: Remove use of slow_virt_to_phys()
  Drivers: hv: vmbus: Reset the channel callback in vmbus_onoffer_rescind()
  ...

1 files changed, 37 insertions, 0 deletions

diff --git a/drivers/fsi/fsi-master.h b/drivers/fsi/fsi-master.h
index ee0b46086026..040a7d4cf717 100644
--- a/drivers/fsi/fsi-master.h
+++ b/drivers/fsi/fsi-master.h
@@ -18,7 +18,41 @@
 #define DRIVERS_FSI_MASTER_H
 
 #include <linux/device.h>
+#include <linux/mutex.h>
 
+/* Various protocol delays */
+#define	FSI_ECHO_DELAY_CLOCKS	16	/* Number clocks for echo delay */
+#define	FSI_SEND_DELAY_CLOCKS	16	/* Number clocks for send delay */
+#define	FSI_PRE_BREAK_CLOCKS	50	/* Number clocks to prep for break */
+#define	FSI_BREAK_CLOCKS	256	/* Number of clocks to issue break */
+#define	FSI_POST_BREAK_CLOCKS	16000	/* Number clocks to set up cfam */
+#define	FSI_INIT_CLOCKS		5000	/* Clock out any old data */
+#define	FSI_MASTER_DPOLL_CLOCKS	50      /* < 21 will cause slave to hang */
+#define	FSI_MASTER_EPOLL_CLOCKS	50      /* Number of clocks for E_POLL retry */
+
+/* Various retry maximums */
+#define FSI_CRC_ERR_RETRIES	10
+#define	FSI_MASTER_MAX_BUSY	200
+#define	FSI_MASTER_MTOE_COUNT	1000
+
+/* Command encodings */
+#define	FSI_CMD_DPOLL		0x2
+#define	FSI_CMD_EPOLL		0x3
+#define	FSI_CMD_TERM		0x3f
+#define FSI_CMD_ABS_AR		0x4
+#define FSI_CMD_REL_AR		0x5
+#define FSI_CMD_SAME_AR		0x3	/* but only a 2-bit opcode... */
+
+/* Slave responses */
+#define	FSI_RESP_ACK		0	/* Success */
+#define	FSI_RESP_BUSY		1	/* Slave busy */
+#define	FSI_RESP_ERRA		2	/* Any (misc) Error */
+#define	FSI_RESP_ERRC		3	/* Slave reports master CRC error */
+
+/* Misc */
+#define	FSI_CRC_SIZE		4
+
+/* fsi-master definition and flags */
 #define FSI_MASTER_FLAG_SWCLOCK		0x1
 
 struct fsi_master {
@@ -26,6 +60,7 @@ struct fsi_master {
 	int		idx;
 	int		n_links;
 	int		flags;
+	struct mutex	scan_lock;
 	int		(*read)(struct fsi_master *, int link, uint8_t id,
 				uint32_t addr, void *val, size_t size);
 	int		(*write)(struct fsi_master *, int link, uint8_t id,
@@ -33,6 +68,8 @@ struct fsi_master {
 	int		(*term)(struct fsi_master *, int link, uint8_t id);
 	int		(*send_break)(struct fsi_master *, int link);
 	int		(*link_enable)(struct fsi_master *, int link);
+	int		(*link_config)(struct fsi_master *, int link,
+				       u8 t_send_delay, u8 t_echo_delay);
 };
 
 #define dev_to_fsi_master(d) container_of(d, struct fsi_master, dev)