From patchwork Tue Dec 8 16:08:26 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Charles Keepax X-Patchwork-Id: 7799451 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 29120BEEE5 for ; Tue, 8 Dec 2015 16:11:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AB9ED204E3 for ; Tue, 8 Dec 2015 16:11:14 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id BC873204FB for ; Tue, 8 Dec 2015 16:11:08 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 84E97260527; Tue, 8 Dec 2015 17:11:07 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id D3CCE26043E; Tue, 8 Dec 2015 17:10:04 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 82C8D260442; Tue, 8 Dec 2015 17:10:03 +0100 (CET) Received: from mx0b-001ae601.pphosted.com (mx0b-001ae601.pphosted.com [67.231.152.168]) by alsa0.perex.cz (Postfix) with ESMTP id 0F0D026043E for ; Tue, 8 Dec 2015 17:09:06 +0100 (CET) Received: from pps.filterd (m0077474.ppops.net [127.0.0.1]) by mx0b-001ae601.pphosted.com (8.15.0.59/8.15.0.59) with SMTP id tB8G4XHD015421; Tue, 8 Dec 2015 10:09:06 -0600 Received: from mail1.cirrus.com (mail1.cirrus.com [141.131.3.20]) by mx0b-001ae601.pphosted.com with ESMTP id 1yn59fajea-1; Tue, 08 Dec 2015 10:09:05 -0600 Received: from EX12.ad.cirrus.com (unknown [172.19.9.182]) by mail1.cirrus.com (Postfix) with ESMTP id 6069B34036; Tue, 8 Dec 2015 10:09:25 -0600 (CST) Received: from imbe.wolfsonmicro.main (172.20.9.178) by EX12.ad.cirrus.com (172.19.9.182) with Microsoft SMTP Server id 14.3.248.2; Tue, 8 Dec 2015 16:08:43 +0000 Received: from algalon.wolfsonmicro.main ([172.22.20.24]) by imbe.wolfsonmicro.main (8.14.4/8.14.4) with ESMTP id tB8G8c0K003920; Tue, 8 Dec 2015 16:08:43 GMT From: Charles Keepax To: Date: Tue, 8 Dec 2015 16:08:26 +0000 Message-ID: <1449590917-21170-2-git-send-email-ckeepax@opensource.wolfsonmicro.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1449590917-21170-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> References: <1449590917-21170-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> MIME-Version: 1.0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1507310000 definitions=main-1512080278 Cc: alsa-devel@alsa-project.org, vinod.koul@intel.com, patches@opensource.wolfsonmicro.com, lgirdwood@gmail.com, tiwai@suse.com Subject: [alsa-devel] [PATCH 02/13] ASoC: wm_adsp: Replace debugfs lock with more general DSP power lock X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Most events around the DSP just need to be locked to ensure that the DSP can't change power state whilst they are happening. This includes the debugfs entries and this will make sorting the rest of the locking simpler. Signed-off-by: Charles Keepax --- sound/soc/codecs/wm_adsp.c | 75 ++++++++++++++++++++++++++-------------------- sound/soc/codecs/wm_adsp.h | 3 +- 2 files changed, 44 insertions(+), 34 deletions(-) diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 3808190..d3b7726 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -275,30 +275,24 @@ static void wm_adsp_debugfs_save_wmfwname(struct wm_adsp *dsp, const char *s) { char *tmp = kasprintf(GFP_KERNEL, "%s\n", s); - mutex_lock(&dsp->debugfs_lock); kfree(dsp->wmfw_file_name); dsp->wmfw_file_name = tmp; - mutex_unlock(&dsp->debugfs_lock); } static void wm_adsp_debugfs_save_binname(struct wm_adsp *dsp, const char *s) { char *tmp = kasprintf(GFP_KERNEL, "%s\n", s); - mutex_lock(&dsp->debugfs_lock); kfree(dsp->bin_file_name); dsp->bin_file_name = tmp; - mutex_unlock(&dsp->debugfs_lock); } static void wm_adsp_debugfs_clear(struct wm_adsp *dsp) { - mutex_lock(&dsp->debugfs_lock); kfree(dsp->wmfw_file_name); kfree(dsp->bin_file_name); dsp->wmfw_file_name = NULL; dsp->bin_file_name = NULL; - mutex_unlock(&dsp->debugfs_lock); } static ssize_t wm_adsp_debugfs_wmfw_read(struct file *file, @@ -308,7 +302,7 @@ static ssize_t wm_adsp_debugfs_wmfw_read(struct file *file, struct wm_adsp *dsp = file->private_data; ssize_t ret; - mutex_lock(&dsp->debugfs_lock); + mutex_lock(&dsp->pwr_lock); if (!dsp->wmfw_file_name || !dsp->running) ret = 0; @@ -317,7 +311,7 @@ static ssize_t wm_adsp_debugfs_wmfw_read(struct file *file, dsp->wmfw_file_name, strlen(dsp->wmfw_file_name)); - mutex_unlock(&dsp->debugfs_lock); + mutex_unlock(&dsp->pwr_lock); return ret; } @@ -328,7 +322,7 @@ static ssize_t wm_adsp_debugfs_bin_read(struct file *file, struct wm_adsp *dsp = file->private_data; ssize_t ret; - mutex_lock(&dsp->debugfs_lock); + mutex_lock(&dsp->pwr_lock); if (!dsp->bin_file_name || !dsp->running) ret = 0; @@ -337,7 +331,7 @@ static ssize_t wm_adsp_debugfs_bin_read(struct file *file, dsp->bin_file_name, strlen(dsp->bin_file_name)); - mutex_unlock(&dsp->debugfs_lock); + mutex_unlock(&dsp->pwr_lock); return ret; } @@ -1798,9 +1792,8 @@ int wm_adsp1_init(struct wm_adsp *dsp) { INIT_LIST_HEAD(&dsp->alg_regions); -#ifdef CONFIG_DEBUG_FS - mutex_init(&dsp->debugfs_lock); -#endif + mutex_init(&dsp->pwr_lock); + return 0; } EXPORT_SYMBOL_GPL(wm_adsp1_init); @@ -1819,6 +1812,8 @@ int wm_adsp1_event(struct snd_soc_dapm_widget *w, dsp->card = codec->component.card; + mutex_lock(&dsp->pwr_lock); + switch (event) { case SND_SOC_DAPM_POST_PMU: regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30, @@ -1833,7 +1828,7 @@ int wm_adsp1_event(struct snd_soc_dapm_widget *w, if (ret != 0) { adsp_err(dsp, "Failed to read SYSCLK state: %d\n", ret); - return ret; + goto err_mutex; } val = (val & dsp->sysclk_mask) @@ -1845,31 +1840,31 @@ int wm_adsp1_event(struct snd_soc_dapm_widget *w, if (ret != 0) { adsp_err(dsp, "Failed to set clock rate: %d\n", ret); - return ret; + goto err_mutex; } } ret = wm_adsp_load(dsp); if (ret != 0) - goto err; + goto err_ena; ret = wm_adsp1_setup_algs(dsp); if (ret != 0) - goto err; + goto err_ena; ret = wm_adsp_load_coeff(dsp); if (ret != 0) - goto err; + goto err_ena; /* Initialize caches for enabled and unset controls */ ret = wm_coeff_init_control_caches(dsp); if (ret != 0) - goto err; + goto err_ena; /* Sync set controls */ ret = wm_coeff_sync_controls(dsp); if (ret != 0) - goto err; + goto err_ena; /* Start the core running */ regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30, @@ -1904,11 +1899,16 @@ int wm_adsp1_event(struct snd_soc_dapm_widget *w, break; } + mutex_unlock(&dsp->pwr_lock); + return 0; -err: +err_ena: regmap_update_bits(dsp->regmap, dsp->base + ADSP1_CONTROL_30, ADSP1_SYS_ENA, 0); +err_mutex: + mutex_unlock(&dsp->pwr_lock); + return ret; } EXPORT_SYMBOL_GPL(wm_adsp1_event); @@ -1954,6 +1954,8 @@ static void wm_adsp2_boot_work(struct work_struct *work) int ret; unsigned int val; + mutex_lock(&dsp->pwr_lock); + /* * For simplicity set the DSP clock rate to be the * SYSCLK rate rather than making it configurable. @@ -1961,7 +1963,7 @@ static void wm_adsp2_boot_work(struct work_struct *work) ret = regmap_read(dsp->regmap, ARIZONA_SYSTEM_CLOCK_1, &val); if (ret != 0) { adsp_err(dsp, "Failed to read SYSCLK state: %d\n", ret); - return; + goto err_mutex; } val = (val & ARIZONA_SYSCLK_FREQ_MASK) >> ARIZONA_SYSCLK_FREQ_SHIFT; @@ -1971,42 +1973,46 @@ static void wm_adsp2_boot_work(struct work_struct *work) ADSP2_CLK_SEL_MASK, val); if (ret != 0) { adsp_err(dsp, "Failed to set clock rate: %d\n", ret); - return; + goto err_mutex; } ret = wm_adsp2_ena(dsp); if (ret != 0) - return; + goto err_mutex; ret = wm_adsp_load(dsp); if (ret != 0) - goto err; + goto err_ena; ret = wm_adsp2_setup_algs(dsp); if (ret != 0) - goto err; + goto err_ena; ret = wm_adsp_load_coeff(dsp); if (ret != 0) - goto err; + goto err_ena; /* Initialize caches for enabled and unset controls */ ret = wm_coeff_init_control_caches(dsp); if (ret != 0) - goto err; + goto err_ena; /* Sync set controls */ ret = wm_coeff_sync_controls(dsp); if (ret != 0) - goto err; + goto err_ena; dsp->running = true; + mutex_unlock(&dsp->pwr_lock); + return; -err: +err_ena: regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL, ADSP2_SYS_ENA | ADSP2_CORE_ENA | ADSP2_START, 0); +err_mutex: + mutex_unlock(&dsp->pwr_lock); } int wm_adsp2_early_event(struct snd_soc_dapm_widget *w, @@ -2059,6 +2065,8 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w, /* Log firmware state, it can be useful for analysis */ wm_adsp2_show_fw_status(dsp); + mutex_lock(&dsp->pwr_lock); + wm_adsp_debugfs_clear(dsp); dsp->fw_id = 0; @@ -2085,6 +2093,8 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w, kfree(alg_region); } + mutex_unlock(&dsp->pwr_lock); + adsp_dbg(dsp, "Shutdown complete\n"); break; @@ -2137,9 +2147,8 @@ int wm_adsp2_init(struct wm_adsp *dsp) INIT_LIST_HEAD(&dsp->ctl_list); INIT_WORK(&dsp->boot_work, wm_adsp2_boot_work); -#ifdef CONFIG_DEBUG_FS - mutex_init(&dsp->debugfs_lock); -#endif + mutex_init(&dsp->pwr_lock); + return 0; } EXPORT_SYMBOL_GPL(wm_adsp2_init); diff --git a/sound/soc/codecs/wm_adsp.h b/sound/soc/codecs/wm_adsp.h index 89b7d71..d2a8c78 100644 --- a/sound/soc/codecs/wm_adsp.h +++ b/sound/soc/codecs/wm_adsp.h @@ -59,9 +59,10 @@ struct wm_adsp { struct work_struct boot_work; + struct mutex pwr_lock; + #ifdef CONFIG_DEBUG_FS struct dentry *debugfs_root; - struct mutex debugfs_lock; char *wmfw_file_name; char *bin_file_name; #endif