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[80.251.214.228]) by smtp.gmail.com with ESMTPSA id v69sm17397130pfc.18.2021.06.28.19.30.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Jun 2021 19:30:30 -0700 (PDT) From: Shawn Guo To: Nick Dyer , Dmitry Torokhov Cc: Loic Poulain , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Shawn Guo Subject: [PATCH] Input: atmel_mxt_ts - add config_crc sysfs entry Date: Tue, 29 Jun 2021 10:30:23 +0800 Message-Id: <20210629023023.32017-1-shawn.guo@linaro.org> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org It's useful for checking the config version that is currently installed on the device. The code is taken from downstream maXTouch_linux tree. Signed-off-by: Shawn Guo --- drivers/input/touchscreen/atmel_mxt_ts.c | 11 +++++++++++ 1 file changed, 11 insertions(+) -- 2.17.1 diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 05de92c0293b..41a3d4df3ebd 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -3002,16 +3002,27 @@ static ssize_t mxt_update_fw_store(struct device *dev, return count; } +/* Configuration crc check sum is returned as hex xxxxxx */ +static ssize_t mxt_config_crc_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mxt_data *data = dev_get_drvdata(dev); + + return scnprintf(buf, PAGE_SIZE, "%06x\n", data->config_crc); +} + static DEVICE_ATTR(fw_version, S_IRUGO, mxt_fw_version_show, NULL); static DEVICE_ATTR(hw_version, S_IRUGO, mxt_hw_version_show, NULL); static DEVICE_ATTR(object, S_IRUGO, mxt_object_show, NULL); static DEVICE_ATTR(update_fw, S_IWUSR, NULL, mxt_update_fw_store); +static DEVICE_ATTR(config_crc, S_IRUGO, mxt_config_crc_show, NULL); static struct attribute *mxt_attrs[] = { &dev_attr_fw_version.attr, &dev_attr_hw_version.attr, &dev_attr_object.attr, &dev_attr_update_fw.attr, + &dev_attr_config_crc.attr, NULL };