From mboxrd@z Thu Jan 1 00:00:00 1970 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=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 920E1CA9EA0 for ; Tue, 22 Oct 2019 23:55:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7035320578 for ; Tue, 22 Oct 2019 23:55:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388220AbfJVXzL (ORCPT ); Tue, 22 Oct 2019 19:55:11 -0400 Received: from mga09.intel.com ([134.134.136.24]:15717 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733008AbfJVXzC (ORCPT ); Tue, 22 Oct 2019 19:55:02 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Oct 2019 16:55:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,218,1569308400"; d="scan'208";a="196612870" Received: from srajamoh-mobl2.amr.corp.intel.com (HELO pbossart-mobl3.intel.com) ([10.251.20.203]) by fmsmga008.fm.intel.com with ESMTP; 22 Oct 2019 16:55:01 -0700 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org, tiwai@suse.de, broonie@kernel.org, vkoul@kernel.org, gregkh@linuxfoundation.org, jank@cadence.com, srinivas.kandagatla@linaro.org, slawomir.blauciak@intel.com, Bard liao , Rander Wang , Ranjani Sridharan , Pierre-Louis Bossart , Sanyog Kale Subject: [PATCH v3 4/5] soundwire: intel/cadence: add flag for interrupt enable Date: Tue, 22 Oct 2019 18:54:47 -0500 Message-Id: <20191022235448.17586-5-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191022235448.17586-1-pierre-louis.bossart@linux.intel.com> References: <20191022235448.17586-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Prepare for future PM support and fix error handling by disabling interrupts as needed. Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/cadence_master.c | 18 ++++++++++++------ drivers/soundwire/cadence_master.h | 2 +- drivers/soundwire/intel.c | 13 +++++++------ 3 files changed, 20 insertions(+), 13 deletions(-) diff --git a/drivers/soundwire/cadence_master.c b/drivers/soundwire/cadence_master.c index 7476e867468d..d2c44bfff53a 100644 --- a/drivers/soundwire/cadence_master.c +++ b/drivers/soundwire/cadence_master.c @@ -815,14 +815,17 @@ EXPORT_SYMBOL(sdw_cdns_exit_reset); * sdw_cdns_enable_interrupt() - Enable SDW interrupts and update config * @cdns: Cadence instance */ -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state) { - u32 mask; + u32 slave_intmask0 = 0; + u32 slave_intmask1 = 0; + u32 mask = 0; + + if (!state) + goto update_masks; - cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, - CDNS_MCP_SLAVE_INTMASK0_MASK); - cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, - CDNS_MCP_SLAVE_INTMASK1_MASK); + slave_intmask0 = CDNS_MCP_SLAVE_INTMASK0_MASK; + slave_intmask1 = CDNS_MCP_SLAVE_INTMASK1_MASK; /* enable detection of all slave state changes */ mask = CDNS_MCP_INT_SLAVE_MASK; @@ -845,6 +848,9 @@ int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns) if (interrupt_mask) /* parameter override */ mask = interrupt_mask; +update_masks: + cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK0, slave_intmask0); + cdns_writel(cdns, CDNS_MCP_SLAVE_INTMASK1, slave_intmask1); cdns_writel(cdns, CDNS_MCP_INTMASK, mask); /* commit changes */ diff --git a/drivers/soundwire/cadence_master.h b/drivers/soundwire/cadence_master.h index 6199e71edeab..a106aea6fe53 100644 --- a/drivers/soundwire/cadence_master.h +++ b/drivers/soundwire/cadence_master.h @@ -142,7 +142,7 @@ int sdw_cdns_init(struct sdw_cdns *cdns); int sdw_cdns_pdi_init(struct sdw_cdns *cdns, struct sdw_cdns_stream_config config); int sdw_cdns_exit_reset(struct sdw_cdns *cdns); -int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns); +int sdw_cdns_enable_interrupt(struct sdw_cdns *cdns, bool state); #ifdef CONFIG_DEBUG_FS void sdw_cdns_debugfs_init(struct sdw_cdns *cdns, struct dentry *root); diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 891cd08e6037..d2fd8bdca55d 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -945,7 +945,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_add_bus_master(&sdw->cdns.bus); if (ret) { dev_err(&pdev->dev, "sdw_add_bus_master fail: %d\n", ret); - goto err_master_reg; + return ret; } if (sdw->cdns.bus.prop.hw_disabled) { @@ -976,7 +976,7 @@ static int intel_probe(struct platform_device *pdev) goto err_init; } - ret = sdw_cdns_enable_interrupt(&sdw->cdns); + ret = sdw_cdns_enable_interrupt(&sdw->cdns, true); if (ret < 0) { dev_err(sdw->cdns.dev, "cannot enable interrupts\n"); goto err_init; @@ -985,7 +985,7 @@ static int intel_probe(struct platform_device *pdev) ret = sdw_cdns_exit_reset(&sdw->cdns); if (ret < 0) { dev_err(sdw->cdns.dev, "unable to exit bus reset sequence\n"); - goto err_init; + goto err_interrupt; } /* Register DAIs */ @@ -993,18 +993,18 @@ static int intel_probe(struct platform_device *pdev) if (ret) { dev_err(sdw->cdns.dev, "DAI registration failed: %d\n", ret); snd_soc_unregister_component(sdw->cdns.dev); - goto err_dai; + goto err_interrupt; } intel_debugfs_init(sdw); return 0; -err_dai: +err_interrupt: + sdw_cdns_enable_interrupt(&sdw->cdns, false); free_irq(sdw->res->irq, sdw); err_init: sdw_delete_bus_master(&sdw->cdns.bus); -err_master_reg: return ret; } @@ -1016,6 +1016,7 @@ static int intel_remove(struct platform_device *pdev) if (!sdw->cdns.bus.prop.hw_disabled) { intel_debugfs_exit(sdw); + sdw_cdns_enable_interrupt(&sdw->cdns, false); free_irq(sdw->res->irq, sdw); snd_soc_unregister_component(sdw->cdns.dev); } -- 2.20.1