From patchwork Sat Jan 30 13:56:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Young X-Patchwork-Id: 12057221 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=-13.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, URIBL_BLOCKED,USER_AGENT_GIT 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 7DAF2C433E6 for ; Sat, 30 Jan 2021 13:57:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 465DF64E0E for ; Sat, 30 Jan 2021 13:57:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230080AbhA3N5X (ORCPT ); Sat, 30 Jan 2021 08:57:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229620AbhA3N5T (ORCPT ); Sat, 30 Jan 2021 08:57:19 -0500 Received: from gofer.mess.org (gofer.mess.org [IPv6:2a02:8011:d000:212::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5F492C061573; Sat, 30 Jan 2021 05:56:39 -0800 (PST) Received: by gofer.mess.org (Postfix, from userid 1000) id 548D9C6379; Sat, 30 Jan 2021 13:56:36 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mess.org; s=2020; t=1612014996; bh=o+v5JicLaYZiiRnM4H+3R6+OQDhXMGSY4o+W8jt2QpQ=; h=From:To:Cc:Subject:Date:From; b=E9kzjPMtTcsHRb5FETTLtBs0e/ePeCmkTm8YX6wf/MkMb1qgMyMt8SzjUZopv800q kYRaObm25smCovOevAbxUK9YWmjHNo3z6xX7s0zZ3hN/wM8DSOly5Z+qxgWo3CtK/z nc8MSxZiVR+QGKmXFA4Q2RhyjE487QSCFxGK0jT3O3AMIula3LB9dSYn+5IgbTecjI yvPgnikU5AyruhKqTajlUNsBOzLJVEG9OGy43NXYWq4PbOGy5Ht22G66N9JqTwkp6s WqoDiMYojn/VElgxRzHWxd8PibMKQ3A8ZayhTtG8E4T/oU+j/VSDl90HAshBBYPQMy 1dWeoGmKpugTw== From: Sean Young To: linux-media@vger.kernel.org Cc: Laz Lev , stable@vger.kernel.org Subject: [PATCH] media: smipcie: fix interrupt handling and IR timeout Date: Sat, 30 Jan 2021 13:56:36 +0000 Message-Id: <20210130135636.20834-1-sean@mess.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org After the first IR message, interrupts are no longer received. In addition, the code generates a timeout IR message of 10ms but sets the timeout value to 100ms, so no timeout was ever generated. Fixes: a49a7a4635de ("media: smipcie: add universal ir capability") Tested-by: Laz Lev Link: https://bugzilla.kernel.org/show_bug.cgi?id=204317 Cc: stable@vger.kernel.org # v5.2+ Signed-off-by: Sean Young --- drivers/media/pci/smipcie/smipcie-ir.c | 46 +++++++++++++++----------- 1 file changed, 26 insertions(+), 20 deletions(-) diff --git a/drivers/media/pci/smipcie/smipcie-ir.c b/drivers/media/pci/smipcie/smipcie-ir.c index e6b74e161a05..c0604d9c7011 100644 --- a/drivers/media/pci/smipcie/smipcie-ir.c +++ b/drivers/media/pci/smipcie/smipcie-ir.c @@ -60,38 +60,44 @@ static void smi_ir_decode(struct smi_rc *ir) { struct smi_dev *dev = ir->dev; struct rc_dev *rc_dev = ir->rc_dev; - u32 dwIRControl, dwIRData; - u8 index, ucIRCount, readLoop; + u32 control, data; + u8 index, ir_count, read_loop; - dwIRControl = smi_read(IR_Init_Reg); + control = smi_read(IR_Init_Reg); - if (dwIRControl & rbIRVld) { - ucIRCount = (u8) smi_read(IR_Data_Cnt); + dev_dbg(&rc_dev->dev, "ircontrol: 0x%08x\n", control); - readLoop = ucIRCount/4; - if (ucIRCount % 4) - readLoop += 1; - for (index = 0; index < readLoop; index++) { - dwIRData = smi_read(IR_DATA_BUFFER_BASE + (index * 4)); + if (control & rbIRVld) { + ir_count = (u8)smi_read(IR_Data_Cnt); - ir->irData[index*4 + 0] = (u8)(dwIRData); - ir->irData[index*4 + 1] = (u8)(dwIRData >> 8); - ir->irData[index*4 + 2] = (u8)(dwIRData >> 16); - ir->irData[index*4 + 3] = (u8)(dwIRData >> 24); + dev_dbg(&rc_dev->dev, "ircount %d\n", ir_count); + + read_loop = ir_count / 4; + if (ir_count % 4) + read_loop += 1; + for (index = 0; index < read_loop; index++) { + data = smi_read(IR_DATA_BUFFER_BASE + (index * 4)); + dev_dbg(&rc_dev->dev, "IRData 0x%08x\n", data); + + ir->irData[index * 4 + 0] = (u8)(data); + ir->irData[index * 4 + 1] = (u8)(data >> 8); + ir->irData[index * 4 + 2] = (u8)(data >> 16); + ir->irData[index * 4 + 3] = (u8)(data >> 24); } - smi_raw_process(rc_dev, ir->irData, ucIRCount); - smi_set(IR_Init_Reg, rbIRVld); + smi_raw_process(rc_dev, ir->irData, ir_count); } - if (dwIRControl & rbIRhighidle) { + if (control & rbIRhighidle) { struct ir_raw_event rawir = {}; + dev_dbg(&rc_dev->dev, "high idle\n"); + rawir.pulse = 0; rawir.duration = SMI_SAMPLE_PERIOD * SMI_SAMPLE_IDLEMIN; ir_raw_event_store_with_filter(rc_dev, &rawir); - smi_set(IR_Init_Reg, rbIRhighidle); } + smi_set(IR_Init_Reg, rbIRVld); ir_raw_event_handle(rc_dev); } @@ -150,7 +156,7 @@ int smi_ir_init(struct smi_dev *dev) rc_dev->dev.parent = &dev->pci_dev->dev; rc_dev->map_name = dev->info->rc_map; - rc_dev->timeout = MS_TO_US(100); + rc_dev->timeout = SMI_SAMPLE_PERIOD * SMI_SAMPLE_IDLEMIN; rc_dev->rx_resolution = SMI_SAMPLE_PERIOD; ir->rc_dev = rc_dev; @@ -173,7 +179,7 @@ void smi_ir_exit(struct smi_dev *dev) struct smi_rc *ir = &dev->ir; struct rc_dev *rc_dev = ir->rc_dev; - smi_ir_stop(ir); rc_unregister_device(rc_dev); + smi_ir_stop(ir); ir->rc_dev = NULL; }