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 ...

Linus Torvalds committed 3 years ago

Commit 5f5ce6b2 parents 239451e b0d8a6719 files · +846 −147Browse files

Showing the changes to include/linux/platform_data (2 of 19 files). Show all

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include/linux/platform_data/cros_ec_commands.h +64 −5
include/linux/platform_data/cros_ec_proto.h +23 −1

include/linux/platform_data/cros_ec_commands.h+64−5

 } __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.
  */
 	 * 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)
 /* Issue AP reset */
 #define EC_CMD_AP_RESET 0x0125
-/**
+/*
  * Get the number of peripheral charge ports
  */
 #define EC_CMD_PCHG_COUNT 0x0134
 	uint8_t port_count;
 } __ec_align1;
-/**
+/*
  * Get the status of a peripheral charge port
  */
 #define EC_CMD_PCHG 0x0135
 	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 */
 	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 */
 		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;
 #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;
 	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+23−1

 #define __LINUX_CROS_EC_PROTO_H
 #include <linux/device.h>
+#include <linux/lockdep_types.h>
 #include <linux/mutex.h>
 #include <linux/notifier.h>
 #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
 #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.
  */
  *            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
  * @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
  *      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 */
 			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;
 	/* The platform devices used by the mfd driver */
 	struct platform_device *ec;
 	struct platform_device *pd;
+	struct blocking_notifier_head panic_notifier;
 };
 /**

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

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