From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965636AbeEXIzY (ORCPT ); Thu, 24 May 2018 04:55:24 -0400 Received: from mail-wr0-f194.google.com ([209.85.128.194]:44763 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965604AbeEXIzN (ORCPT ); Thu, 24 May 2018 04:55:13 -0400 X-Google-Smtp-Source: AB8JxZrO5gyqJolhdVL79kWBzDwCDYyv3E5oafLv8zp/MoLKB3M7TOi5xlSF/WDXROHTFUyY6VhVVw== From: Neil Armstrong To: airlied@linux.ie, hans.verkuil@cisco.com, lee.jones@linaro.org, olof@lixom.net, seanpaul@google.com Cc: Neil Armstrong , sadolfsson@google.com, felixe@google.com, bleung@google.com, darekm@google.com, marcheu@chromium.org, fparent@baylibre.com, dri-devel@lists.freedesktop.org, linux-media@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, eballetbo@gmail.com Subject: [PATCH v5 4/6] mfd: cros-ec: Introduce CEC commands and events definitions. Date: Thu, 24 May 2018 10:54:59 +0200 Message-Id: <1527152101-17278-5-git-send-email-narmstrong@baylibre.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1527152101-17278-1-git-send-email-narmstrong@baylibre.com> References: <1527152101-17278-1-git-send-email-narmstrong@baylibre.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The EC can expose a CEC bus, this patch adds the CEC related definitions needed by the cros-ec-cec driver. Signed-off-by: Neil Armstrong Tested-by: Enric Balletbo i Serra --- include/linux/mfd/cros_ec_commands.h | 85 ++++++++++++++++++++++++++++++++++++ 1 file changed, 85 insertions(+) diff --git a/include/linux/mfd/cros_ec_commands.h b/include/linux/mfd/cros_ec_commands.h index cc0768e..ea9646f 100644 --- a/include/linux/mfd/cros_ec_commands.h +++ b/include/linux/mfd/cros_ec_commands.h @@ -804,6 +804,8 @@ enum ec_feature_code { EC_FEATURE_MOTION_SENSE_FIFO = 24, /* EC has RTC feature that can be controlled by host commands */ EC_FEATURE_RTC = 27, + /* EC supports CEC commands */ + EC_FEATURE_CEC = 35, }; #define EC_FEATURE_MASK_0(event_code) (1UL << (event_code % 32)) @@ -2078,6 +2080,12 @@ enum ec_mkbp_event { /* EC sent a sysrq command */ EC_MKBP_EVENT_SYSRQ = 6, + /* Notify the AP that something happened on CEC */ + EC_MKBP_CEC_EVENT = 8, + + /* Send an incoming CEC message to the AP */ + EC_MKBP_EVENT_CEC_MESSAGE = 9, + /* Number of MKBP events */ EC_MKBP_EVENT_COUNT, }; @@ -2850,6 +2858,83 @@ struct ec_params_reboot_ec { /*****************************************************************************/ /* + * HDMI CEC commands + * + * These commands are for sending and receiving message via HDMI CEC + */ +#define MAX_CEC_MSG_LEN 16 + +/* CEC message from the AP to be written on the CEC bus */ +#define EC_CMD_CEC_WRITE_MSG 0x00B8 + +/** + * struct ec_params_cec_write - Message to write to the CEC bus + * @msg: message content to write to the CEC bus + */ +struct ec_params_cec_write { + uint8_t msg[MAX_CEC_MSG_LEN]; +} __packed; + +/* Set various CEC parameters */ +#define EC_CMD_CEC_SET 0x00BA + +/** + * struct ec_params_cec_set - CEC parameters set + * @cmd: parameter type, can be CEC_CMD_ENABLE or CEC_CMD_LOGICAL_ADDRESS + * @enable: in case cmd is CEC_CMD_ENABLE, this field can be 0 to disable CEC + * or 1 to enable CEC functionnality + * @address: in case cmd is CEC_CMD_LOGICAL_ADDRESS, this field encodes the + * requested logical address between 0 and 15 or 0xff to unregister + */ +struct ec_params_cec_set { + uint8_t cmd; /* enum cec_command */ + union { + uint8_t enable; + uint8_t address; + }; +} __packed; + +/* Read various CEC parameters */ +#define EC_CMD_CEC_GET 0x00BB + +/** + * struct ec_params_cec_get - CEC parameters get + * @cmd: parameter type, can be CEC_CMD_ENABLE or CEC_CMD_LOGICAL_ADDRESS + */ +struct ec_params_cec_get { + uint8_t cmd; /* enum cec_command */ +} __packed; + +/** + * struct ec_response_cec_get - CEC parameters get response + * @enable: in case cmd was CEC_CMD_ENABLE, this field will 0 if CEC is + * disabled or 1 if CEC functionnality is enabled + * @address: in case cmd was CEC_CMD_LOGICAL_ADDRESS, this will encode the + * configured logical address between 0 and 15 or 0xff if unregistered + */ +struct ec_response_cec_get { + union { + uint8_t enable; + uint8_t address; + }; +} __packed; + +/* CEC parameters command */ +enum cec_command { + /* CEC reading, writing and events enable */ + CEC_CMD_ENABLE, + /* CEC logical address */ + CEC_CMD_LOGICAL_ADDRESS, +}; + +/* Events from CEC to AP */ +enum mkbp_cec_event { + EC_MKBP_CEC_SEND_OK = BIT(0), + EC_MKBP_CEC_SEND_FAILED = BIT(1), +}; + +/*****************************************************************************/ +/* * Special commands * * These do not follow the normal rules for commands. See each command for -- 2.7.4