From patchwork Wed Feb 12 08:41:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Wang, Jiada" X-Patchwork-Id: 11377931 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DC754921 for ; Wed, 12 Feb 2020 08:45:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C443C20873 for ; Wed, 12 Feb 2020 08:45:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728656AbgBLIo6 (ORCPT ); Wed, 12 Feb 2020 03:44:58 -0500 Received: from esa1.mentor.iphmx.com ([68.232.129.153]:29711 "EHLO esa1.mentor.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728493AbgBLIo6 (ORCPT ); Wed, 12 Feb 2020 03:44:58 -0500 IronPort-SDR: t+FBzItMqP1D370gev4Up3EGcP2zueTW8cFjhuFjl7lwTW6qK+G5V8apQ8beorhm4jLTWr4gMY APxJyH3xN7ugzKSCINj7ukq9pKw8VIIPOefBTpv6ZTX33FwPpasbhhdCvFtXofyVU4HD8QL6cU j7S0dMLMqBX2qk8Vh27UfFzzoY4HDeJfddI8M5vYUtfrvtEt9HnG4Jv+4p6HWzN+2pP1EdBnQn VGFfmK7rPHdkw2CSnZJBM3R/8MwyBG3DMa48WwB7OOq5TIZZ/p8Erg50AsDD/BP8mw4pZQLUe6 e/8= X-IronPort-AV: E=Sophos;i="5.70,428,1574150400"; d="scan'208";a="47667032" Received: from orw-gwy-01-in.mentorg.com ([192.94.38.165]) by esa1.mentor.iphmx.com with ESMTP; 12 Feb 2020 00:44:56 -0800 IronPort-SDR: d2dLF8SrtTUQ17GivWzp1RlLKMOnhjK5VXMA3jIZdWuiIeQtAXOGPZBfVjMqWcqVg9f3zwjwZP ceUTV0rxgJRXPOxgVjhMAkZoh+n2BlzaZ3zycl/rr7IOYLoa7ke1200dmBciTXw0RlmQU5xA7A Dk1qxPplPK0V/4MY7mZD7S0QZ83sPzJEv+iycOwxb3Ns4tXlA0/Hp3FMwhLICJM5IzmWR6rzic nwwgQBDg0x9D0hLEOCqEIrKkVVxM5/im4+X7DVcyVxC/tq7I8fZeFjb/+pATcGjO4DlZXbB6YE ew4= From: Jiada Wang To: , , , , , CC: , , , , Subject: [PATCH v7 19/48] Input: atmel_mxt_ts - refactor firmware flash to extract context into struct Date: Wed, 12 Feb 2020 00:41:49 -0800 Message-ID: <20200212084218.32344-20-jiada_wang@mentor.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200212084218.32344-1-jiada_wang@mentor.com> References: <20200212084218.32344-1-jiada_wang@mentor.com> MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org From: Nick Dyer Signed-off-by: Nick Dyer (cherry picked from ndyer/linux/for-upstream commit 1bbe20ff3dcd6612e7942c495929eae5c138ece2) Signed-off-by: George G. Davis Signed-off-by: Jiada Wang --- drivers/input/touchscreen/atmel_mxt_ts.c | 59 +++++++++++++++--------- 1 file changed, 36 insertions(+), 23 deletions(-) diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 7abaca26dcba..3c5058cfc012 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -291,6 +291,22 @@ struct mxt_cfg { struct mxt_info info; }; +/* Firmware frame structure */ +struct mxt_fw_frame { + __be16 size; + u8 data[]; +}; + +/* Firmware update context */ +struct mxt_flash { + const struct firmware *fw; + struct mxt_fw_frame *frame; + loff_t pos; + size_t frame_size; + unsigned int count; + unsigned int retry; +}; + /* Each client has this additional data */ struct mxt_data { struct i2c_client *client; @@ -3244,21 +3260,17 @@ static int mxt_check_firmware_format(struct device *dev, static int mxt_load_fw(struct device *dev) { struct mxt_data *data = dev_get_drvdata(dev); - const struct firmware *fw = NULL; - unsigned int frame_size; - unsigned int pos = 0; - unsigned int retry = 0; - unsigned int frame = 0; + struct mxt_flash f = { 0, }; int ret; - ret = request_firmware(&fw, data->fw_name, dev); + ret = request_firmware(&f.fw, data->fw_name, dev); if (ret) { dev_err(dev, "Unable to open firmware %s\n", data->fw_name); return ret; } /* Check for incorrect enc file */ - ret = mxt_check_firmware_format(dev, fw); + ret = mxt_check_firmware_format(dev, f.fw); if (ret) goto release_firmware; @@ -3312,41 +3324,42 @@ static int mxt_load_fw(struct device *dev) goto disable_irq; } - while (pos < fw->size) { + while (f.pos < f.fw->size) { + f.frame = (struct mxt_fw_frame *)(f.fw->data + f.pos); + ret = mxt_check_bootloader(data, MXT_WAITING_FRAME_DATA, true); if (ret) goto disable_irq; - frame_size = ((*(fw->data + pos) << 8) | *(fw->data + pos + 1)); - /* Take account of CRC bytes */ - frame_size += 2; + f.frame_size = __be16_to_cpu(f.frame->size) + 2U; /* Write one frame to device */ - ret = mxt_bootloader_write(data, fw->data + pos, frame_size); + ret = mxt_bootloader_write(data, f.fw->data + f.pos, + f.frame_size); if (ret) goto disable_irq; ret = mxt_check_bootloader(data, MXT_FRAME_CRC_PASS, true); if (ret) { - retry++; + f.retry++; /* Back off by 20ms per retry */ - msleep(retry * 20); + msleep(f.retry * 20); - if (retry > 20) { + if (f.retry > 20) { dev_err(dev, "Retry count exceeded\n"); goto disable_irq; } } else { - retry = 0; - pos += frame_size; - frame++; + f.retry = 0; + f.pos += f.frame_size; + f.count++; } - if (frame % 50 == 0) - dev_dbg(dev, "Sent %d frames, %d/%zd bytes\n", - frame, pos, fw->size); + if (f.count % 50 == 0) + dev_dbg(dev, "Sent %u frames, %lld/%zu bytes\n", + f.count, f.pos, f.fw->size); } /* Wait for flash. */ @@ -3355,7 +3368,7 @@ static int mxt_load_fw(struct device *dev) if (ret) goto disable_irq; - dev_dbg(dev, "Sent %d frames, %d bytes\n", frame, pos); + dev_dbg(dev, "Sent %u frames, %lld bytes\n", f.count, f.pos); /* * Wait for device to reset. Some bootloader versions do not assert @@ -3369,7 +3382,7 @@ static int mxt_load_fw(struct device *dev) disable_irq: disable_irq(data->irq); release_firmware: - release_firmware(fw); + release_firmware(f.fw); return ret; }