From patchwork Fri May 23 03:16:01 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabio Estevam X-Patchwork-Id: 4227871 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 [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id B57EDBF90B for ; Fri, 23 May 2014 03:16:37 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id CBC6E20396 for ; Fri, 23 May 2014 03:16:36 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 8E811202BE for ; Fri, 23 May 2014 03:16:35 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id 5C8D4265667; Fri, 23 May 2014 05:16:34 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=no version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id BC664265644; Fri, 23 May 2014 05:16:24 +0200 (CEST) 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 43EBA265645; Fri, 23 May 2014 05:16:23 +0200 (CEST) Received: from mail-qg0-f44.google.com (mail-qg0-f44.google.com [209.85.192.44]) by alsa0.perex.cz (Postfix) with ESMTP id 3F032265634 for ; Fri, 23 May 2014 05:16:12 +0200 (CEST) Received: by mail-qg0-f44.google.com with SMTP id i50so7073703qgf.17 for ; Thu, 22 May 2014 20:16:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id; bh=wL4Jx7NMEGK288R8yqh7+YFW1HUH64wMWScpJbluhy8=; b=UM17jHHAJ+FznFVKpIPEtEf1oxpdUQq3ugpTt8xstxavAM0S7tMCeBrs18N2aE5H/W BUqxeJ7EfYEcBRXYpkSB2VWuzKR4eRJDCzT4oJdhlN3UOkGOKDxrvG4JPmmsPL+4GW6m 7RPN1FbeKcJbi/uqyA5imXrvSKRqdBTGeANlscC3tSjYTAQtIhjGtx47J1iVZ6g/mpq5 6GhVDZnU3ifOnq6k9FEkjIFISOR7cukkKLje4RaD3tJRYmxhYQhqlFYWVK1M02azK3dg ZiVyXu3qdIP9g2PkWuqu/NDnHHA+wRrQSeNpHjIEL4rf433BSYfBarLIkBBZIyBo/zs4 WIjg== X-Received: by 10.224.88.136 with SMTP id a8mr2384581qam.59.1400814971502; Thu, 22 May 2014 20:16:11 -0700 (PDT) Received: from localhost.localdomain ([177.194.43.224]) by mx.google.com with ESMTPSA id j3sm1152947qgj.24.2014.05.22.20.16.09 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 22 May 2014 20:16:11 -0700 (PDT) From: Fabio Estevam To: broonie@kernel.org Date: Fri, 23 May 2014 00:16:01 -0300 Message-Id: <1400814961-14230-1-git-send-email-festevam@gmail.com> X-Mailer: git-send-email 1.8.3.2 Cc: Fabio Estevam , alsa-devel@alsa-project.org, shawn.guo@freescale.com Subject: [alsa-devel] [PATCH] ASoC: sgtl5000: Fix the cache handling 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: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP From: Fabio Estevam Since commit e5d80e82e32e (ASoC: sgtl5000: Convert to use regmap directly) a kernel oops is observed after a suspend/resume sequence. According to Mark Brown: "Yes, reg_cache isn't there if we're not using ASoC level caching. The fix should just be to replace the direct cache references with snd_soc_read()s which will end up in a cache lookup if the register is cached." Do as suggested and also complete the cache array with the missing registers so that sgtl5000_restore_regs() can properly cache the all the registers it needs. Reported-by: Shawn Guo Signed-off-by: Fabio Estevam --- sound/soc/codecs/sgtl5000.c | 39 ++++++++++++++++++++++++++++----------- 1 file changed, 28 insertions(+), 11 deletions(-) diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index 9626ee0..aac4fbc 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -36,18 +36,32 @@ /* default value of sgtl5000 registers */ static const struct reg_default sgtl5000_reg_defaults[] = { + { SGTL5000_CHIP_DIG_POWER, 0x0000 }, { SGTL5000_CHIP_CLK_CTRL, 0x0008 }, { SGTL5000_CHIP_I2S_CTRL, 0x0010 }, { SGTL5000_CHIP_SSS_CTRL, 0x0010 }, + { SGTL5000_CHIP_ADCDAC_CTRL, 0x020c }, { SGTL5000_CHIP_DAC_VOL, 0x3c3c }, { SGTL5000_CHIP_PAD_STRENGTH, 0x015f }, + { SGTL5000_CHIP_ANA_ADC_CTRL, 0x0000 }, { SGTL5000_CHIP_ANA_HP_CTRL, 0x1818 }, { SGTL5000_CHIP_ANA_CTRL, 0x0111 }, + { SGTL5000_CHIP_LINREG_CTRL, 0x0000 }, + { SGTL5000_CHIP_REF_CTRL, 0x0000 }, + { SGTL5000_CHIP_MIC_CTRL, 0x0000 }, + { SGTL5000_CHIP_LINE_OUT_CTRL, 0x0000 }, { SGTL5000_CHIP_LINE_OUT_VOL, 0x0404 }, { SGTL5000_CHIP_ANA_POWER, 0x7060 }, { SGTL5000_CHIP_PLL_CTRL, 0x5000 }, + { SGTL5000_CHIP_CLK_TOP_CTRL, 0x0000 }, + { SGTL5000_CHIP_ANA_STATUS, 0x0000 }, + { SGTL5000_CHIP_SHORT_CTRL, 0x0000 }, + { SGTL5000_CHIP_ANA_TEST2, 0x0000 }, + { SGTL5000_DAP_CTRL, 0x0000 }, + { SGTL5000_DAP_PEQ, 0x0000 }, { SGTL5000_DAP_BASS_ENHANCE, 0x0040 }, { SGTL5000_DAP_BASS_ENHANCE_CTRL, 0x051f }, + { SGTL5000_DAP_AUDIO_EQ, 0x0000 }, { SGTL5000_DAP_SURROUND, 0x0040 }, { SGTL5000_DAP_EQ_BASS_BAND0, 0x002f }, { SGTL5000_DAP_EQ_BASS_BAND1, 0x002f }, @@ -55,6 +69,7 @@ static const struct reg_default sgtl5000_reg_defaults[] = { { SGTL5000_DAP_EQ_BASS_BAND3, 0x002f }, { SGTL5000_DAP_EQ_BASS_BAND4, 0x002f }, { SGTL5000_DAP_MAIN_CHAN, 0x8000 }, + { SGTL5000_DAP_MIX_CHAN, 0x0000 }, { SGTL5000_DAP_AVC_CTRL, 0x0510 }, { SGTL5000_DAP_AVC_THRESHOLD, 0x1473 }, { SGTL5000_DAP_AVC_ATTACK, 0x0028 }, @@ -925,14 +940,11 @@ static int sgtl5000_set_bias_level(struct snd_soc_codec *codec, return ret; udelay(10); - regcache_cache_only(sgtl5000->regmap, false); - ret = regcache_sync(sgtl5000->regmap); if (ret != 0) { dev_err(codec->dev, "Failed to restore cache: %d\n", ret); - regcache_cache_only(sgtl5000->regmap, true); regulator_bulk_disable(ARRAY_SIZE(sgtl5000->supplies), sgtl5000->supplies); @@ -1063,7 +1075,10 @@ static bool sgtl5000_readable(struct device *dev, unsigned int reg) #ifdef CONFIG_SUSPEND static int sgtl5000_suspend(struct snd_soc_codec *codec) { + struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec); + sgtl5000_set_bias_level(codec, SND_SOC_BIAS_OFF); + regcache_cache_only(sgtl5000->regmap, true); return 0; } @@ -1075,7 +1090,6 @@ static int sgtl5000_suspend(struct snd_soc_codec *codec) */ static int sgtl5000_restore_regs(struct snd_soc_codec *codec) { - u16 *cache = codec->reg_cache; u16 reg; /* restore regular registers */ @@ -1089,12 +1103,12 @@ static int sgtl5000_restore_regs(struct snd_soc_codec *codec) reg == SGTL5000_CHIP_REF_CTRL) continue; - snd_soc_write(codec, reg, cache[reg]); + snd_soc_write(codec, reg, snd_soc_read(codec, reg)); } /* restore dap registers */ for (reg = SGTL5000_DAP_REG_OFFSET; reg < SGTL5000_MAX_REG_OFFSET; reg += 2) - snd_soc_write(codec, reg, cache[reg]); + snd_soc_write(codec, reg, snd_soc_read(codec, reg)); /* * restore these regs according to the power setting sequence in @@ -1110,29 +1124,32 @@ static int sgtl5000_restore_regs(struct snd_soc_codec *codec) * prefer to resotre it after SGTL5000_CHIP_ANA_POWER restored */ snd_soc_write(codec, SGTL5000_CHIP_LINREG_CTRL, - cache[SGTL5000_CHIP_LINREG_CTRL]); + snd_soc_read(codec, SGTL5000_CHIP_LINREG_CTRL)); snd_soc_write(codec, SGTL5000_CHIP_ANA_POWER, - cache[SGTL5000_CHIP_ANA_POWER]); + snd_soc_read(codec, SGTL5000_CHIP_ANA_POWER)); snd_soc_write(codec, SGTL5000_CHIP_CLK_CTRL, - cache[SGTL5000_CHIP_CLK_CTRL]); + snd_soc_read(codec, SGTL5000_CHIP_CLK_CTRL)); snd_soc_write(codec, SGTL5000_CHIP_REF_CTRL, - cache[SGTL5000_CHIP_REF_CTRL]); + snd_soc_read(codec, SGTL5000_CHIP_REF_CTRL)); snd_soc_write(codec, SGTL5000_CHIP_LINE_OUT_CTRL, - cache[SGTL5000_CHIP_LINE_OUT_CTRL]); + snd_soc_read(codec, SGTL5000_CHIP_LINE_OUT_CTRL)); return 0; } static int sgtl5000_resume(struct snd_soc_codec *codec) { + struct sgtl5000_priv *sgtl5000 = snd_soc_codec_get_drvdata(codec); /* Bring the codec back up to standby to enable regulators */ sgtl5000_set_bias_level(codec, SND_SOC_BIAS_STANDBY); /* Restore registers by cached in memory */ sgtl5000_restore_regs(codec); + + regcache_cache_only(sgtl5000->regmap, false); return 0; } #else