From patchwork Mon Nov 9 17:28:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= X-Patchwork-Id: 323284 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9BCD6C56202 for ; Mon, 9 Nov 2020 17:29:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4493820E65 for ; Mon, 9 Nov 2020 17:29:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=rere.qmqm.pl header.i=@rere.qmqm.pl header.b="dTrxN2xJ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731664AbgKIR2s (ORCPT ); Mon, 9 Nov 2020 12:28:48 -0500 Received: from rere.qmqm.pl ([91.227.64.183]:14655 "EHLO rere.qmqm.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731112AbgKIR2r (ORCPT ); Mon, 9 Nov 2020 12:28:47 -0500 Received: from remote.user (localhost [127.0.0.1]) by rere.qmqm.pl (Postfix) with ESMTPSA id 4CVHz141lVzC4; Mon, 9 Nov 2020 18:28:45 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rere.qmqm.pl; s=1; t=1604942925; bh=3doK0FUutvkvWAsR9+JjynwPIbyNyVd+O7Di1WbQwyM=; h=Date:In-Reply-To:References:From:Subject:To:Cc:From; b=dTrxN2xJGLOqz/iCzZU8NkaV6/9Wr5hTNhEFFyldNrypE0gsiLkmvJEmxVPjMuI/c n5/AsZrkZ07gzk0MoGEKSm5CnTjU4j1FLvlefi+mDTO+yx0oV11i5sQQ3G6wWSmWu3 AjtRtyD5Pctqh2Md7F4uQgbIqZRDGVfr58qy/+xmTlgZ2ZDPhRUzDdlAwEeIHi4dl6 /qK1D5rDnwpwJG8lmdSR9gCtKuCdhl5xXNs6KiGLTVIFMhIc8lQBGEiB4sOoZh3gDS f8Sw0rcm5irgFeARXNCh2UWSZNAF74fvPRZcIroYVg20VH8uuu9/xHnZQX6dZDvNbc F63PzFmuGr3Mw== X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.102.4 at mail Date: Mon, 09 Nov 2020 18:28:45 +0100 Message-Id: <38eaa55540d62898fdf7e17c541e916663b9b24e.1604942771.git.mirq-linux@rere.qmqm.pl> In-Reply-To: References: From: =?utf-8?b?TWljaGHFgiBNaXJvc8WCYXc=?= Subject: [PATCH RESEND v8 1/4] input: elants: document some registers and values MIME-Version: 1.0 To: Dmitry Torokhov , Johnny Chuang Cc: Peter Hutterer , Dmitry Osipenko , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Add information found in downstream kernels, to make the code less magic. Signed-off-by: Michał Mirosław Reviewed-by: Dmitry Osipenko Tested-by: Dmitry Osipenko --- drivers/input/touchscreen/elants_i2c.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/input/touchscreen/elants_i2c.c b/drivers/input/touchscreen/elants_i2c.c index 50c348297e38..d51cb910fba1 100644 --- a/drivers/input/touchscreen/elants_i2c.c +++ b/drivers/input/touchscreen/elants_i2c.c @@ -82,7 +82,7 @@ #define HEADER_REPORT_10_FINGER 0x62 -/* Header (4 bytes) plus 3 fill 10-finger packets */ +/* Header (4 bytes) plus 3 full 10-finger packets */ #define MAX_PACKET_SIZE 169 #define BOOT_TIME_DELAY_MS 50 @@ -97,6 +97,10 @@ #define E_INFO_PHY_SCAN 0xD7 #define E_INFO_PHY_DRIVER 0xD8 +/* FW write command, 0x54 0x?? 0x0, 0x01 */ +#define E_POWER_STATE_SLEEP 0x50 +#define E_POWER_STATE_RESUME 0x58 + #define MAX_RETRIES 3 #define MAX_FW_UPDATE_RETRIES 30 @@ -269,8 +273,8 @@ static int elants_i2c_calibrate(struct elants_data *ts) { struct i2c_client *client = ts->client; int ret, error; - static const u8 w_flashkey[] = { 0x54, 0xC0, 0xE1, 0x5A }; - static const u8 rek[] = { 0x54, 0x29, 0x00, 0x01 }; + static const u8 w_flashkey[] = { CMD_HEADER_WRITE, 0xC0, 0xE1, 0x5A }; + static const u8 rek[] = { CMD_HEADER_WRITE, 0x29, 0x00, 0x01 }; static const u8 rek_resp[] = { CMD_HEADER_REK, 0x66, 0x66, 0x66 }; disable_irq(client->irq); @@ -1388,7 +1392,9 @@ static int __maybe_unused elants_i2c_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct elants_data *ts = i2c_get_clientdata(client); - const u8 set_sleep_cmd[] = { 0x54, 0x50, 0x00, 0x01 }; + const u8 set_sleep_cmd[] = { + CMD_HEADER_WRITE, E_POWER_STATE_SLEEP, 0x00, 0x01 + }; int retry_cnt; int error; @@ -1425,7 +1431,9 @@ static int __maybe_unused elants_i2c_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct elants_data *ts = i2c_get_clientdata(client); - const u8 set_active_cmd[] = { 0x54, 0x58, 0x00, 0x01 }; + const u8 set_active_cmd[] = { + CMD_HEADER_WRITE, E_POWER_STATE_RESUME, 0x00, 0x01 + }; int retry_cnt; int error;