From patchwork Tue Jan 18 07:26:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Torokhov X-Patchwork-Id: 12716026 X-Patchwork-Delegate: jikos@jikos.cz Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2941CC433EF for ; Tue, 18 Jan 2022 07:27:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245665AbiARH13 (ORCPT ); Tue, 18 Jan 2022 02:27:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43498 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245189AbiARH0t (ORCPT ); Tue, 18 Jan 2022 02:26:49 -0500 Received: from mail-pj1-x102e.google.com (mail-pj1-x102e.google.com [IPv6:2607:f8b0:4864:20::102e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B50FC06174E; Mon, 17 Jan 2022 23:26:43 -0800 (PST) Received: by mail-pj1-x102e.google.com with SMTP id hv15so22492997pjb.5; Mon, 17 Jan 2022 23:26:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=v5cTrYGjBflhhMN+moNPPDrBhqrz1YMurZIOtJGj4T8=; b=PnRPOQlOkC0+w2q3TwAX4p9rjPF13nnic+JiOLS5P8IioE7xRg7kDifNJFNd5SlbkQ j6dMtDwMty2mP0hn8n7tVG7AsxYnsioWbIicTCvWfJ7+VEgLgTjWC9mi6SrU8GY4mkqw 8WOVL9z6/eUBlcsEgbtA8NYreBsjnoduNm4xGaIRz9HSLa2PNOMAqf8sQwLEyELf/a0J CpgPBR8xt9HtpFbvqLXBeggS+AWdI+ZiM0bBYvz8aDrisIduD3nFtxV0d2gzn6xqdLhD Lc2Nh/rYifYppCk1Z91OpwuTIlfnkxQOHSu5DD8+Up0OQql7j9S7tLIOuz0xkiU7lQMY E6kQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=v5cTrYGjBflhhMN+moNPPDrBhqrz1YMurZIOtJGj4T8=; b=UCRI4YXQ0i3Ln1FdCUe48HQjTM8QlanY189CJxlkeccsEWmcxqUjX2pTI+3ms227SM qOi2+pTbRC0tpBz7RMVmCmLgIxCMym1BpLZPhx9EdQXpjwP8aTTJoGee8u1N5OYLkQ7p lzNhZDuU9TC/5y9c9TUqhdGwrUY5ihvaE1DJxSKnq2Owc3Dsei7XhdwrVyVqH8LD2z2R /wxrr6CdE3naBCKl2K3tiQj8u4K4aBf73t+QsX5d+0Xxxmn7Vh4DnEdt+STqDzgup8tZ EUOZHyOdKVYiRhvBorz4LyRK/L9D+p0XI/sstKQlqpObYfj0K8Pnf2DD9aVOXz0EHLrB iQqg== X-Gm-Message-State: AOAM532CqZjDoGq9S2+hV42PS/kiNAVYOPad/6ROIjZvnq3j+xKIedKX vSmWHMj6/kqqWuUj0C+6MEqxtMSch5Q= X-Google-Smtp-Source: ABdhPJyGmwVLeZUI6G30LQqbTTobWIVDhijM49SVWx7lgNZEcFLEghjxLpa0gExdKXDoVRn9AtBD+w== X-Received: by 2002:a17:902:ecc9:b0:14a:7a70:1fb8 with SMTP id a9-20020a170902ecc900b0014a7a701fb8mr25230777plh.22.1642490803026; Mon, 17 Jan 2022 23:26:43 -0800 (PST) Received: from dtor-ws.mtv.corp.google.com ([2620:15c:202:201:bf2e:59:5029:f4c5]) by smtp.gmail.com with ESMTPSA id y18sm11079816pfl.156.2022.01.17.23.26.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Jan 2022 23:26:42 -0800 (PST) From: Dmitry Torokhov To: Jiri Kosina , Benjamin Tissoires Cc: Angela Czubak , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 07/12] HID: i2c-hid: create a helper for SET_POWER command Date: Mon, 17 Jan 2022 23:26:23 -0800 Message-Id: <20220118072628.1617172-8-dmitry.torokhov@gmail.com> X-Mailer: git-send-email 2.34.1.703.g22d0c6ccf7-goog In-Reply-To: <20220118072628.1617172-1-dmitry.torokhov@gmail.com> References: <20220118072628.1617172-1-dmitry.torokhov@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Another case where creating a dedicated helper allows for cleaner code that shows exactly what communication happens with the device when toggling its power. Signed-off-by: Dmitry Torokhov --- drivers/hid/i2c-hid/i2c-hid-core.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/hid/i2c-hid/i2c-hid-core.c b/drivers/hid/i2c-hid/i2c-hid-core.c index b1a2c6ad374d..da673e3f2910 100644 --- a/drivers/hid/i2c-hid/i2c-hid-core.c +++ b/drivers/hid/i2c-hid/i2c-hid-core.c @@ -107,7 +107,6 @@ struct i2c_hid_cmd { /* commands */ static const struct i2c_hid_cmd hid_reset_cmd = { I2C_HID_CMD(0x01) }; static const struct i2c_hid_cmd hid_get_report_cmd = { I2C_HID_CMD(0x02) }; -static const struct i2c_hid_cmd hid_set_power_cmd = { I2C_HID_CMD(0x08) }; /* * These definitions are not used here, but are defined by the spec. @@ -396,6 +395,22 @@ static int i2c_hid_set_or_send_report(struct i2c_hid *ihid, return data_len; } +static int i2c_hid_set_power_command(struct i2c_hid *ihid, int power_state) +{ + size_t length; + + /* SET_POWER uses command register */ + *(__le16 *)ihid->cmdbuf = ihid->hdesc.wCommandRegister; + length = sizeof(__le16); + + /* Now the command itself */ + length += i2c_hid_encode_command(ihid->cmdbuf + length, + I2C_HID_OPCODE_SET_POWER, + 0, power_state); + + return i2c_hid_xfer(ihid, ihid->cmdbuf, length, NULL, 0); +} + static int i2c_hid_set_power(struct i2c_hid *ihid, int power_state) { int ret; @@ -409,15 +424,14 @@ static int i2c_hid_set_power(struct i2c_hid *ihid, int power_state) */ if (power_state == I2C_HID_PWR_ON && ihid->quirks & I2C_HID_QUIRK_SET_PWR_WAKEUP_DEV) { - ret = i2c_hid_command(ihid, &hid_set_power_cmd, NULL, 0); + ret = i2c_hid_set_power_command(ihid, I2C_HID_PWR_ON); /* Device was already activated */ if (!ret) goto set_pwr_exit; } - ret = __i2c_hid_command(ihid, &hid_set_power_cmd, power_state, - 0, NULL, 0, NULL, 0); + ret = i2c_hid_set_power_command(ihid, power_state); if (ret) dev_err(&ihid->client->dev, "failed to change power setting.\n");