From patchwork Fri Aug 25 02:43:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Reka Norman X-Patchwork-Id: 13364950 Received: from mail-pf1-f176.google.com (mail-pf1-f176.google.com [209.85.210.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 865E87E0 for ; Fri, 25 Aug 2023 02:51:05 +0000 (UTC) Received: by mail-pf1-f176.google.com with SMTP id d2e1a72fcca58-68a410316a2so442137b3a.0 for ; Thu, 24 Aug 2023 19:51:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1692931865; x=1693536665; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Y4EGzm9bw0XByI1m8+dZAvw1r82ELdr/2MKF8VZnDhM=; b=L/peUxfv5ek1T9o7T4v/BvKO3klCtt5UyahYL2j2G6cWn+PuHUyKzkMFohwOPvt6cE hvdVtBIHC04XCH9bmcBvDAvr3SKql2+OHyX7CrprdBHGfQvQRTGxgHxTEkjtj3+3hzv3 /KSYrOS8DSJLx9HIpLQJVR1l6cNPvJIAwjjt8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692931865; x=1693536665; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Y4EGzm9bw0XByI1m8+dZAvw1r82ELdr/2MKF8VZnDhM=; b=ST7xYLOtOenhFY3SRSA2A/nCWhDYBLD3kNStxxQo/N5cXftahYkkIbU787bh+0WpFE wB/7dVmbzraml5dNgGfoh7ENU59IRM8l/10Hb/lmoi+ldJRjAwy+sa/QmIp8k4Q5N+BY PHFYKqUKRmH//OPJ3Xjjk2su2oQZ34z+jOW7zWtmKTpayOHx/AbBPYHXhbDd6UnEmLbu K+glgpsfuWSIENzRN/LYN71sk27Vx3gaaBymDfNbXWapNbnwnUSUCZinPEKLZrGCaiah 7XgFNdZ4C0s6V44G+Pno5h0xXmjKTJxdsgnwBC9wn5l5DBN7B1XX5INYtN0FyPUTNEve GGqw== X-Gm-Message-State: AOJu0Yxtwfuw3vfs425X9PwGkB/6x+V+inSElJldiPhL4CsXETO9kDi6 Q3LZppVUugzmU5QkYDf3oKTfjA== X-Google-Smtp-Source: AGHT+IGNvt6/DD1lGIo+aVfNdQV4LtnbDVTQ3+AyPfWDl8BKFxGOBCCuVYRHGLggtterkcO3Ny3whg== X-Received: by 2002:a05:6a20:2449:b0:13f:3d25:d83 with SMTP id t9-20020a056a20244900b0013f3d250d83mr18540213pzc.19.1692931864876; Thu, 24 Aug 2023 19:51:04 -0700 (PDT) Received: from rekanorman3.syd.corp.google.com ([2401:fa00:9:14:9fe1:d4b1:42cc:882f]) by smtp.gmail.com with ESMTPSA id q10-20020a170902a3ca00b001bb0eebd90asm420847plb.245.2023.08.24.19.51.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Aug 2023 19:51:03 -0700 (PDT) From: Reka Norman To: Hans Verkuil Cc: Daisuke Nojiri , Neil Armstrong , Stefan Adolfsson , Reka Norman , Benson Leung , Guenter Roeck , Mauro Carvalho Chehab , chrome-platform@lists.linux.dev, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org Subject: [PATCH v2 3/9] media: cros-ec-cec: Support multiple ports in set/get host commands Date: Fri, 25 Aug 2023 12:43:56 +1000 Message-ID: <20230825024735.1443836-4-rekanorman@chromium.org> X-Mailer: git-send-email 2.42.0.rc2.253.gd59a3bf2b4-goog In-Reply-To: <20230825024735.1443836-1-rekanorman@chromium.org> References: <20230825024735.1443836-1-rekanorman@chromium.org> Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Reuse the top four bits of the cmd field to specify the port number. The reason for doing this as opposed to adding a separate uint8_t field is it avoids the need to add new versions of these commands. The change is backwards compatible since these bits were previously always zero, so the default behaviour is to always operate on port 0. Signed-off-by: Reka Norman --- (no changes since v1) drivers/media/cec/platform/cros-ec/cros-ec-cec.c | 2 ++ include/linux/platform_data/cros_ec_commands.h | 8 ++++++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/media/cec/platform/cros-ec/cros-ec-cec.c b/drivers/media/cec/platform/cros-ec/cros-ec-cec.c index d76a25ae0cf1..e969031e1e0e 100644 --- a/drivers/media/cec/platform/cros-ec/cros-ec-cec.c +++ b/drivers/media/cec/platform/cros-ec/cros-ec-cec.c @@ -118,6 +118,7 @@ static int cros_ec_cec_set_log_addr(struct cec_adapter *adap, u8 logical_addr) struct cros_ec_device *cros_ec = cros_ec_cec->cros_ec; struct ec_params_cec_set params = { .cmd = CEC_CMD_LOGICAL_ADDRESS, + .port = port->port_num, .val = logical_addr, }; int ret; @@ -162,6 +163,7 @@ static int cros_ec_cec_adap_enable(struct cec_adapter *adap, bool enable) struct cros_ec_device *cros_ec = cros_ec_cec->cros_ec; struct ec_params_cec_set params = { .cmd = CEC_CMD_ENABLE, + .port = port->port_num, .val = enable, }; int ret; diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h index cb2ddd10a613..e8bb05db360f 100644 --- a/include/linux/platform_data/cros_ec_commands.h +++ b/include/linux/platform_data/cros_ec_commands.h @@ -4457,13 +4457,15 @@ struct ec_params_cec_write { /** * struct ec_params_cec_set - CEC parameters set * @cmd: parameter type, can be CEC_CMD_ENABLE or CEC_CMD_LOGICAL_ADDRESS + * @port: CEC port to set the parameter on * @val: in case cmd is CEC_CMD_ENABLE, this field can be 0 to disable CEC * or 1 to enable CEC functionality, 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 */ + uint8_t cmd : 4; /* enum cec_command */ + uint8_t port : 4; uint8_t val; } __ec_align1; @@ -4473,9 +4475,11 @@ struct ec_params_cec_set { /** * struct ec_params_cec_get - CEC parameters get * @cmd: parameter type, can be CEC_CMD_ENABLE or CEC_CMD_LOGICAL_ADDRESS + * @port: CEC port to get the parameter on */ struct ec_params_cec_get { - uint8_t cmd; /* enum cec_command */ + uint8_t cmd : 4; /* enum cec_command */ + uint8_t port : 4; } __ec_align1; /**