Merge tag 'i3c/for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux

Pull i3c updates from Alexandre Belloni:
 "This adds support for the I3C HCI controller of the AMD SoC which as
  expected requires quirks. Also fixes for the other drivers, including
  rate selection fixes for svc.

  Core:
   - allow adjusting first broadcast address speed

  Drivers:
   - cdns: few fixes
   - mipi-i3c-hci: Add AMD SoC I3C controller support and quirks, fix
     get_i3c_mode
   - svc: adjust rates, fix race condition"

* tag 'i3c/for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
  i3c: master: svc: Fix use after free vulnerability in svc_i3c_master Driver Due to Race Condition
  i3c: master: cdns: Fix use after free vulnerability in cdns_i3c_master Driver Due to Race Condition
  i3c: master: svc: adjust SDR according to i3c spec
  i3c: master: svc: use slow speed for first broadcast address
  i3c: master: support to adjust first broadcast address speed
  i3c/master: cmd_v1: Fix the rule for getting i3c mode
  i3c: master: cdns: fix module autoloading
  i3c: mipi-i3c-hci: Add a quirk to set Response buffer threshold
  i3c: mipi-i3c-hci: Add a quirk to set timing parameters
  i3c: mipi-i3c-hci: Relocate helper macros to HCI header file
  i3c: mipi-i3c-hci: Add a quirk to set PIO mode
  i3c: mipi-i3c-hci: Read HC_CONTROL_PIO_MODE only after i3c hci v1.1
  i3c: mipi-i3c-hci: Add AMDI5017 ACPI ID to the I3C Support List

1 files changed, 16 insertions, 0 deletions

diff --git a/include/linux/i3c/master.h b/include/linux/i3c/master.h
index 074f632868d9..2a1ed05d5782 100644
--- a/include/linux/i3c/master.h
+++ b/include/linux/i3c/master.h
@@ -278,6 +278,20 @@ enum i3c_bus_mode {
 };
 
 /**
+ * enum i3c_open_drain_speed - I3C open-drain speed
+ * @I3C_OPEN_DRAIN_SLOW_SPEED: Slow open-drain speed for sending the first
+ *				broadcast address. The first broadcast address at this speed
+ *				will be visible to all devices on the I3C bus. I3C devices
+ *				working in I2C mode will turn off their spike filter when
+ *				switching into I3C mode.
+ * @I3C_OPEN_DRAIN_NORMAL_SPEED: Normal open-drain speed in I3C bus mode.
+ */
+enum i3c_open_drain_speed {
+	I3C_OPEN_DRAIN_SLOW_SPEED,
+	I3C_OPEN_DRAIN_NORMAL_SPEED,
+};
+
+/**
  * enum i3c_addr_slot_status - I3C address slot status
  * @I3C_ADDR_SLOT_FREE: address is free
  * @I3C_ADDR_SLOT_RSVD: address is reserved
@@ -436,6 +450,7 @@ struct i3c_bus {
  *		      NULL.
  * @enable_hotjoin: enable hot join event detect.
  * @disable_hotjoin: disable hot join event detect.
+ * @set_speed: adjust I3C open drain mode timing.
  */
 struct i3c_master_controller_ops {
 	int (*bus_init)(struct i3c_master_controller *master);
@@ -464,6 +479,7 @@ struct i3c_master_controller_ops {
 				 struct i3c_ibi_slot *slot);
 	int (*enable_hotjoin)(struct i3c_master_controller *master);
 	int (*disable_hotjoin)(struct i3c_master_controller *master);
+	int (*set_speed)(struct i3c_master_controller *master, enum i3c_open_drain_speed speed);
 };
 
 /**