2024-04-03 18:06:25

by Pavan Holla

Subject: [PATCH v3 1/2] platform/chrome: Update ChromeOS EC header for UCSI

Add EC host commands for reading and writing UCSI structures
in the EC. The corresponding kernel driver is cros-ec-ucsi.

Also update PD events supported by the EC.

Signed-off-by: Pavan Holla <[email protected]>
---
include/linux/platform_data/cros_ec_commands.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
index ecc47d5fe239..c0f6d054a566 100644
--- a/include/linux/platform_data/cros_ec_commands.h
+++ b/include/linux/platform_data/cros_ec_commands.h
@@ -4933,6 +4933,8 @@ struct ec_response_pd_status {
#define PD_EVENT_POWER_CHANGE BIT(1)
#define PD_EVENT_IDENTITY_RECEIVED BIT(2)
#define PD_EVENT_DATA_SWAP BIT(3)
+#define PD_EVENT_TYPEC BIT(4)
+#define PD_EVENT_PPM BIT(5)
struct ec_response_host_event_status {
uint32_t status; /* PD MCU host event status */
} __ec_align4;
@@ -5994,6 +5996,24 @@ struct ec_response_typec_vdm_response {

#undef VDO_MAX_SIZE

+/*
+ * Read/write interface for UCSI OPM <-> PPM communication.
+ */
+#define EC_CMD_UCSI_PPM_SET 0x0140
+
+/* The data size is stored in the host command protocol header. */
+struct ec_params_ucsi_ppm_set {
+ uint16_t offset;
+ uint8_t data[];
+} __ec_align2;
+
+#define EC_CMD_UCSI_PPM_GET 0x0141
+
+struct ec_params_ucsi_ppm_get {
+ uint16_t offset;
+ uint8_t size;
+} __ec_align2;
+
/*****************************************************************************/
/* The command range 0x200-0x2FF is reserved for Rotor. */


--
2.44.0.478.gd926399ef9-goog

2024-04-08 08:15:06

by Tzung-Bi Shih

Subject: Re: [PATCH v3 1/2] platform/chrome: Update ChromeOS EC header for UCSI

On Wed, Apr 03, 2024 at 06:05:21PM +0000, Pavan Holla wrote:
> Add EC host commands for reading and writing UCSI structures
> in the EC. The corresponding kernel driver is cros-ec-ucsi.

FWIW, the new host commands haven't been in [1] yet.

[1]: https://chromium.googlesource.com/chromiumos/platform/ec/+/refs/heads/main/include/ec_commands.h