From patchwork Sat Dec 31 19:19:25 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 9492765 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4FD2A62ABD for ; Sat, 31 Dec 2016 19:19:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3AEBA1FEBD for ; Sat, 31 Dec 2016 19:19:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2F5B01FF29; Sat, 31 Dec 2016 19:19:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8C1531FF29 for ; Sat, 31 Dec 2016 19:19:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754814AbcLaTTd (ORCPT ); Sat, 31 Dec 2016 14:19:33 -0500 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:52020 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754690AbcLaTTb (ORCPT ); Sat, 31 Dec 2016 14:19:31 -0500 Received: from [2001:470:1f1d:6b5::3] (helo=debutante) by mezzanine.sirena.org.uk with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1cNPBf-00074p-VO; Sat, 31 Dec 2016 19:19:30 +0000 Received: from broonie by debutante with local (Exim 4.88) (envelope-from ) id 1cNPBd-0003zv-AH; Sat, 31 Dec 2016 19:19:25 +0000 From: Mark Brown To: Marek Szyprowski Cc: Mark Brown , alsa-devel@alsa-project.org, linux-samsung-soc@vger.kernel.org, Bartlomiej Zolnierkiewicz , Sangbeom Kim , Krzysztof Kozlowski , Inki Dae , Javier Martinez Canillas , Mark Brown , Sylwester Nawrocki In-Reply-To: <1483011247-21613-3-git-send-email-m.szyprowski@samsung.com> Message-Id: Date: Sat, 31 Dec 2016 19:19:25 +0000 X-SA-Exim-Connect-IP: 2001:470:1f1d:6b5::3 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Applied "ASoC: samsung: i2s: Ensure proper runtime PM state of I2S device" to the asoc tree X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: No (on mezzanine.sirena.org.uk); Unknown failure Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The patch ASoC: samsung: i2s: Ensure proper runtime PM state of I2S device has been applied to the asoc tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark From dc938ddb56283a0b71d987e7ecd4be90390985d6 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Thu, 29 Dec 2016 12:34:04 +0100 Subject: [PATCH] ASoC: samsung: i2s: Ensure proper runtime PM state of I2S device This patch adds calls to pm_runtime_get/put to ensure that any access to I2S registers is done with proper (active) runtime PM state of I2S device. Till now the driver enabled runtime PM, but didn't manage the state during driver operation. The driver worked fine only because the runtime PM callbacks managed device clock, which was enabled all the time because of the additional enable call in the driver's probe function. Signed-off-by: Marek Szyprowski Signed-off-by: Mark Brown --- sound/soc/samsung/i2s.c | 54 +++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 46 insertions(+), 8 deletions(-) diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index 10b19a4afe86..8d8965e7107c 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -477,6 +477,9 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, unsigned int rsrc_mask = 1 << i2s_regs->rclksrc_off; u32 mod, mask, val = 0; unsigned long flags; + int ret = 0; + + pm_runtime_get_sync(dai->dev); spin_lock_irqsave(i2s->lock, flags); mod = readl(i2s->addr + I2SMOD); @@ -501,7 +504,8 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, && (mod & cdcon_mask))))) { dev_err(&i2s->pdev->dev, "%s:%d Other DAI busy\n", __func__, __LINE__); - return -EAGAIN; + ret = -EAGAIN; + goto err; } if (dir == SND_SOC_CLOCK_IN) @@ -529,7 +533,7 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, } else { i2s->rclk_srcrate = clk_get_rate(i2s->op_clk); - return 0; + goto done; } } @@ -540,8 +544,10 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, i2s->op_clk = clk_get(&i2s->pdev->dev, "i2s_opclk0"); - if (WARN_ON(IS_ERR(i2s->op_clk))) - return PTR_ERR(i2s->op_clk); + if (WARN_ON(IS_ERR(i2s->op_clk))) { + ret = PTR_ERR(i2s->op_clk); + goto err; + } clk_prepare_enable(i2s->op_clk); i2s->rclk_srcrate = clk_get_rate(i2s->op_clk); @@ -555,12 +561,13 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, || (clk_id && !(mod & rsrc_mask))) { dev_err(&i2s->pdev->dev, "%s:%d Other DAI busy\n", __func__, __LINE__); - return -EAGAIN; + ret = -EAGAIN; + goto err; } else { /* Call can't be on the active DAI */ i2s->op_clk = other->op_clk; i2s->rclk_srcrate = other->rclk_srcrate; - return 0; + goto done; } if (clk_id == 1) @@ -568,7 +575,8 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, break; default: dev_err(&i2s->pdev->dev, "We don't serve that!\n"); - return -EINVAL; + ret = -EINVAL; + goto err; } spin_lock_irqsave(i2s->lock, flags); @@ -576,8 +584,13 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, mod = (mod & ~mask) | val; writel(mod, i2s->addr + I2SMOD); spin_unlock_irqrestore(i2s->lock, flags); +done: + pm_runtime_put(dai->dev); return 0; +err: + pm_runtime_put(dai->dev); + return ret; } static int i2s_set_fmt(struct snd_soc_dai *dai, @@ -646,6 +659,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, return -EINVAL; } + pm_runtime_get_sync(dai->dev); spin_lock_irqsave(i2s->lock, flags); mod = readl(i2s->addr + I2SMOD); /* @@ -655,6 +669,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, if (any_active(i2s) && ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) { spin_unlock_irqrestore(i2s->lock, flags); + pm_runtime_put(dai->dev); dev_err(&i2s->pdev->dev, "%s:%d Other DAI busy\n", __func__, __LINE__); return -EAGAIN; @@ -664,6 +679,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, mod |= tmp; writel(mod, i2s->addr + I2SMOD); spin_unlock_irqrestore(i2s->lock, flags); + pm_runtime_put(dai->dev); return 0; } @@ -675,6 +691,8 @@ static int i2s_hw_params(struct snd_pcm_substream *substream, u32 mod, mask = 0, val = 0; unsigned long flags; + WARN_ON(!pm_runtime_active(dai->dev)); + if (!is_secondary(i2s)) mask |= (MOD_DC2_EN | MOD_DC1_EN); @@ -763,6 +781,8 @@ static int i2s_startup(struct snd_pcm_substream *substream, struct i2s_dai *other = get_other_dai(i2s); unsigned long flags; + pm_runtime_get_sync(dai->dev); + spin_lock_irqsave(&lock, flags); i2s->mode |= DAI_OPENED; @@ -800,6 +820,8 @@ static void i2s_shutdown(struct snd_pcm_substream *substream, i2s->bfs = 0; spin_unlock_irqrestore(&lock, flags); + + pm_runtime_put(dai->dev); } static int config_setup(struct i2s_dai *i2s) @@ -874,6 +896,7 @@ static int i2s_trigger(struct snd_pcm_substream *substream, case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + pm_runtime_get_sync(dai->dev); spin_lock_irqsave(i2s->lock, flags); if (config_setup(i2s)) { @@ -902,6 +925,7 @@ static int i2s_trigger(struct snd_pcm_substream *substream, } spin_unlock_irqrestore(i2s->lock, flags); + pm_runtime_put(dai->dev); break; } @@ -916,13 +940,16 @@ static int i2s_set_clkdiv(struct snd_soc_dai *dai, switch (div_id) { case SAMSUNG_I2S_DIV_BCLK: + pm_runtime_get_sync(dai->dev); if ((any_active(i2s) && div && (get_bfs(i2s) != div)) || (other && other->bfs && (other->bfs != div))) { + pm_runtime_put(dai->dev); dev_err(&i2s->pdev->dev, "%s:%d Other DAI busy\n", __func__, __LINE__); return -EAGAIN; } i2s->bfs = div; + pm_runtime_put(dai->dev); break; default: dev_err(&i2s->pdev->dev, @@ -941,6 +968,8 @@ i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) snd_pcm_sframes_t delay; const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs; + WARN_ON(!pm_runtime_active(dai->dev)); + if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) delay = FIC_RXCOUNT(reg); else if (is_secondary(i2s)) @@ -984,6 +1013,8 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) struct i2s_dai *other = get_other_dai(i2s); unsigned long flags; + pm_runtime_get_sync(dai->dev); + if (is_secondary(i2s)) { /* If this is probe on the secondary DAI */ snd_soc_dai_init_dma_data(dai, &other->sec_dai->dma_playback, NULL); @@ -1016,6 +1047,7 @@ static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) if (!is_opened(other)) i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, 0, SND_SOC_CLOCK_IN); + pm_runtime_put(dai->dev); return 0; } @@ -1025,6 +1057,8 @@ static int samsung_i2s_dai_remove(struct snd_soc_dai *dai) struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai); unsigned long flags; + pm_runtime_get_sync(dai->dev); + if (!is_secondary(i2s)) { if (i2s->quirks & QUIRK_NEED_RSTCLR) { spin_lock_irqsave(i2s->lock, flags); @@ -1033,6 +1067,8 @@ static int samsung_i2s_dai_remove(struct snd_soc_dai *dai) } } + pm_runtime_put(dai->dev); + return 0; } @@ -1322,7 +1358,7 @@ static int samsung_i2s_probe(struct platform_device *pdev) dev_set_drvdata(&pdev->dev, pri_dai); - + pm_runtime_set_active(&pdev->dev); pm_runtime_enable(&pdev->dev); ret = i2s_register_clock_provider(pdev); @@ -1345,10 +1381,12 @@ static int samsung_i2s_remove(struct platform_device *pdev) pri_dai->sec_dai = NULL; sec_dai->pri_dai = NULL; + pm_runtime_get_sync(&pdev->dev); pm_runtime_disable(&pdev->dev); i2s_unregister_clock_provider(pdev); clk_disable_unprepare(pri_dai->clk); + pm_runtime_put_noidle(&pdev->dev); return 0; }