Merge tag 'tag-chrome-platform-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux

Pull chrome platform updates from Tzung-Bi Shih:
 "New drivers:
   - cros_ec_uart for ChromeOS EC protocol over UART
   - cros_typec_vdm for USB PD Vendor Defined Message

  Improvements:
   - Preserve logs as much as possible when EC panics
   - Shutdown to refrain from potential HW damages when EC panics

  Fixes:
   - Fix DP_PORT_VDO to include DP_CAP_RECEPTACLE
   - Fix a lockdep false positive

  Cleanups:
   - Use sysfs_emit*() instead of scnprintf()
   - Use asm instead of asm-generic for unaligned.h

  Misc:
   - Rename module name from cros_ec_typec to cros-ec-typec
   - Minor fixes"

* tag 'tag-chrome-platform-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: (34 commits)
  platform/chrome: cros_ec_typec: Fix spelling mistake
  platform/chrome: cros_typec_vdm: Add Attention support
  platform/chrome: cros_ec: Add VDM attention headers
  platform/chrome: cros_typec_vdm: Fix VDO copy
  platform/chrome: cros_ec_typec: allow deferred probe of switch handles
  platform/chrome: cros_ec_proto: remove big stub objects from stack
  platform/chrome: cros_ec_uart: fix negative type promoted to high
  platform/chrome: cros_ec: Use per-device lockdep key
  platform/chrome: fix kernel-doc warnings for cros_ec_command
  platform/chrome: fix kernel-doc warning for last_resume_result
  platform/chrome: fix kernel-doc warning for suspend_timeout_ms
  platform/chrome: fix kernel-doc warnings for panic notifier
  platform/chrome: cros_ec_lpc: initialize the buf variable
  platform/chrome: cros_ec: Fix panic notifier registration
  platform/chrome: cros_typec_switch: Check for retimer flag
  platform/chrome: cros_typec_switch: Use fwnode* prop check
  platform/chrome: cros_typec_vdm: Add VDM send support
  platform/chrome: cros_typec_vdm: Add VDM reply support
  platform/chrome: cros_ec_typec: Add initial VDM support
  platform/chrome: cros_ec_typec: Alter module name with hyphens
  ...

include/linux/platform_data/cros_ec_commands.h

@@ -1082,7 +1082,7 @@ struct ec_params_get_cmd_versions_v1 {
 } __ec_align2;
 
 /**
- * struct ec_response_get_cmd_version - Response to the get command versions.
+ * struct ec_response_get_cmd_versions - Response to the get command versions.
  * @version_mask: Mask of supported versions; use EC_VER_MASK() to compare with
  *                a desired version.
  */
@@ -1300,8 +1300,18 @@ enum ec_feature_code {
 	 * mux.
 	 */
 	EC_FEATURE_TYPEC_MUX_REQUIRE_AP_ACK = 43,
-	/* The MCU is a System Companion Processor (SCP) 2nd Core. */
-	EC_FEATURE_SCP_C1 = 45,
+	/*
+	 * The EC supports entering and residing in S4.
+	 */
+	EC_FEATURE_S4_RESIDENCY = 44,
+	/*
+	 * The EC supports the AP directing mux sets for the board.
+	 */
+	EC_FEATURE_TYPEC_AP_MUX_SET = 45,
+	/*
+	 * The EC supports the AP composing VDMs for us to send.
+	 */
+	EC_FEATURE_TYPEC_AP_VDM_SEND = 46,
 };
 
 #define EC_FEATURE_MASK_0(event_code) BIT(event_code % 32)
@@ -5470,7 +5480,7 @@ struct ec_response_rollback_info {
 /* Issue AP reset */
 #define EC_CMD_AP_RESET 0x0125
 
-/**
+/*
  * Get the number of peripheral charge ports
  */
 #define EC_CMD_PCHG_COUNT 0x0134
@@ -5481,7 +5491,7 @@ struct ec_response_pchg_count {
 	uint8_t port_count;
 } __ec_align1;
 
-/**
+/*
  * Get the status of a peripheral charge port
  */
 #define EC_CMD_PCHG 0x0135
@@ -5726,6 +5736,8 @@ enum typec_control_command {
 	TYPEC_CONTROL_COMMAND_ENTER_MODE,
 	TYPEC_CONTROL_COMMAND_TBT_UFP_REPLY,
 	TYPEC_CONTROL_COMMAND_USB_MUX_SET,
+	TYPEC_CONTROL_COMMAND_BIST_SHARE_MODE,
+	TYPEC_CONTROL_COMMAND_SEND_VDM_REQ,
 };
 
 /* Replies the AP may specify to the TBT EnterMode command as a UFP */
@@ -5739,6 +5751,17 @@ struct typec_usb_mux_set {
 	uint8_t mux_flags;	/* USB_PD_MUX_*-encoded USB mux state to set */
 } __ec_align1;
 
+#define VDO_MAX_SIZE 7
+
+struct typec_vdm_req {
+	/* VDM data, including VDM header */
+	uint32_t vdm_data[VDO_MAX_SIZE];
+	/* Number of 32-bit fields filled in */
+	uint8_t vdm_data_objects;
+	/* Partner to address - see enum typec_partner_type */
+	uint8_t partner_type;
+} __ec_align1;
+
 struct ec_params_typec_control {
 	uint8_t port;
 	uint8_t command;	/* enum typec_control_command */
@@ -5754,6 +5777,8 @@ struct ec_params_typec_control {
 		uint8_t mode_to_enter;      /* enum typec_mode */
 		uint8_t tbt_ufp_reply;      /* enum typec_tbt_ufp_reply */
 		struct typec_usb_mux_set mux_params;
+		/* Used for VMD_REQ */
+		struct typec_vdm_req vdm_req_params;
 		uint8_t placeholder[128];
 	};
 } __ec_align1;
@@ -5835,6 +5860,9 @@ enum tcpc_cc_polarity {
 #define PD_STATUS_EVENT_DISCONNECTED		BIT(3)
 #define PD_STATUS_EVENT_MUX_0_SET_DONE		BIT(4)
 #define PD_STATUS_EVENT_MUX_1_SET_DONE		BIT(5)
+#define PD_STATUS_EVENT_VDM_REQ_REPLY		BIT(6)
+#define PD_STATUS_EVENT_VDM_REQ_FAILED		BIT(7)
+#define PD_STATUS_EVENT_VDM_ATTENTION		BIT(8)
 
 struct ec_params_typec_status {
 	uint8_t port;
@@ -5878,6 +5906,37 @@ struct ec_response_typec_status {
 	uint32_t sink_cap_pdos[7];	/* Max 7 PDOs can be present */
 } __ec_align1;
 
+/*
+ * Gather the response to the most recent VDM REQ from the AP, as well
+ * as popping the oldest VDM:Attention from the DPM queue
+ */
+#define EC_CMD_TYPEC_VDM_RESPONSE 0x013C
+
+struct ec_params_typec_vdm_response {
+	uint8_t port;
+} __ec_align1;
+
+struct ec_response_typec_vdm_response {
+	/* Number of 32-bit fields filled in */
+	uint8_t vdm_data_objects;
+	/* Partner to address - see enum typec_partner_type */
+	uint8_t partner_type;
+	/* enum ec_status describing VDM response */
+	uint16_t vdm_response_err;
+	/* VDM data, including VDM header */
+	uint32_t vdm_response[VDO_MAX_SIZE];
+	/* Number of 32-bit Attention fields filled in */
+	uint8_t vdm_attention_objects;
+	/* Number of remaining messages to consume */
+	uint8_t vdm_attention_left;
+	/* Reserved */
+	uint16_t reserved1;
+	/* VDM:Attention contents */
+	uint32_t vdm_attention[2];
+} __ec_align1;
+
+#undef VDO_MAX_SIZE
+
 /*****************************************************************************/
 /* The command range 0x200-0x2FF is reserved for Rotor. */
 

include/linux/platform_data/cros_ec_proto.h

@@ -9,6 +9,7 @@
 #define __LINUX_CROS_EC_PROTO_H
 
 #include <linux/device.h>
+#include <linux/lockdep_types.h>
 #include <linux/mutex.h>
 #include <linux/notifier.h>
 
@@ -19,7 +20,6 @@
 #define CROS_EC_DEV_ISH_NAME	"cros_ish"
 #define CROS_EC_DEV_PD_NAME	"cros_pd"
 #define CROS_EC_DEV_SCP_NAME	"cros_scp"
-#define CROS_EC_DEV_SCP_C1_NAME	"cros_scp_c1"
 #define CROS_EC_DEV_TP_NAME	"cros_tp"
 
 #define CROS_EC_DEV_EC_INDEX 0
@@ -41,6 +41,13 @@
 #define EC_MAX_REQUEST_OVERHEAD		1
 #define EC_MAX_RESPONSE_OVERHEAD	32
 
+/*
+ * EC panic is not covered by the standard (0-F) ACPI notify values.
+ * Arbitrarily choosing B0 to notify ec panic, which is in the 84-BF
+ * device specific ACPI notify range.
+ */
+#define ACPI_NOTIFY_CROS_EC_PANIC 0xB0
+
 /*
  * Command interface between EC and AP, for LPC, I2C and SPI interfaces.
  */
@@ -116,6 +123,8 @@ struct cros_ec_command {
  *            command. The caller should check msg.result for the EC's result
  *            code.
  * @pkt_xfer: Send packet to EC and get response.
+ * @lockdep_key: Lockdep class for each instance. Unused if CONFIG_LOCKDEP is
+ *		 not enabled.
  * @lock: One transaction at a time.
  * @mkbp_event_supported: 0 if MKBP not supported. Otherwise its value is
  *                        the maximum supported version of the MKBP host event
@@ -125,6 +134,15 @@ struct cros_ec_command {
  * @event_data: Raw payload transferred with the MKBP event.
  * @event_size: Size in bytes of the event data.
  * @host_event_wake_mask: Mask of host events that cause wake from suspend.
+ * @suspend_timeout_ms: The timeout in milliseconds between when sleep event
+ *                      is received and when the EC will declare sleep
+ *                      transition failure if the sleep signal is not
+ *                      asserted.  See also struct
+ *                      ec_params_host_sleep_event_v1 in cros_ec_commands.h.
+ * @last_resume_result: The number of sleep power signal transitions that
+ *                      occurred since the suspend message. The high bit
+ *                      indicates a timeout occurred.  See also struct
+ *                      ec_response_host_sleep_event_v1 in cros_ec_commands.h.
  * @last_event_time: exact time from the hard irq when we got notified of
  *     a new event.
  * @notifier_ready: The notifier_block to let the kernel re-query EC
@@ -134,6 +152,7 @@ struct cros_ec_command {
  *      main EC.
  * @pd: The platform_device used by the mfd driver to interface with the
  *      PD behind an EC.
+ * @panic_notifier: EC panic notifier.
  */
 struct cros_ec_device {
 	/* These are used by other drivers that want to talk to the EC */
@@ -160,6 +179,7 @@ struct cros_ec_device {
 			struct cros_ec_command *msg);
 	int (*pkt_xfer)(struct cros_ec_device *ec,
 			struct cros_ec_command *msg);
+	struct lock_class_key lockdep_key;
 	struct mutex lock;
 	u8 mkbp_event_supported;
 	bool host_sleep_v1;
@@ -176,6 +196,8 @@ struct cros_ec_device {
 	/* The platform devices used by the mfd driver */
 	struct platform_device *ec;
 	struct platform_device *pd;
+
+	struct blocking_notifier_head panic_notifier;
 };
 
 /**