From patchwork Mon Oct 5 16:44:39 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 7329121 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id E4E539F2F7 for ; Mon, 5 Oct 2015 16:45:22 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B6B1220693 for ; Mon, 5 Oct 2015 16:45:20 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 58C372068E for ; Mon, 5 Oct 2015 16:45:19 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id E809D261AFF; Mon, 5 Oct 2015 18:45:17 +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=-2.6 required=5.0 tests=BAYES_00,NO_DNS_FOR_FROM, RCVD_IN_DNSWL_LOW, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 35B0D261527; Mon, 5 Oct 2015 18:45:09 +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 8A562261536; Mon, 5 Oct 2015 18:45:08 +0200 (CEST) Received: from mezzanine.sirena.org.uk (mezzanine.sirena.org.uk [106.187.55.193]) by alsa0.perex.cz (Postfix) with ESMTP id 2ABF12608CF for ; Mon, 5 Oct 2015 18:45:01 +0200 (CEST) Received: from [89.101.192.72] (helo=finisterre) by mezzanine.sirena.org.uk with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1Zj8sc-0004Af-H9; Mon, 05 Oct 2015 16:44:51 +0000 Received: from broonie by finisterre with local (Exim 4.86) (envelope-from ) id 1Zj8sR-0003H5-Ui; Mon, 05 Oct 2015 17:44:39 +0100 From: Mark Brown To: Zidan Wang , Nicolin Chen , Mark Brown In-Reply-To: <410baabbc6d51a2a5bc2f0496368764214a2abc6.1438928296.git.zidan.wang@freescale.com> Message-Id: Date: Mon, 05 Oct 2015 17:44:39 +0100 X-SA-Exim-Connect-IP: 89.101.192.72 X-SA-Exim-Mail-From: broonie@sirena.org.uk X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on mezzanine.sirena.org.uk) Cc: alsa-devel@alsa-project.org Subject: [alsa-devel] Applied "ASoC: fsl_esai: Add driver suspend and resume to support MEGA Fast" to the asoc tree 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 The patch ASoC: fsl_esai: Add driver suspend and resume to support MEGA Fast 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 c64c60763b4e3c72a3520c8d51be858cd67bacb5 Mon Sep 17 00:00:00 2001 From: Zidan Wang Date: Fri, 18 Sep 2015 11:09:13 +0800 Subject: [PATCH] ASoC: fsl_esai: Add driver suspend and resume to support MEGA Fast For i.MX6 SoloX, there is a mode of the SoC to shutdown all power source of modules during system suspend and resume procedure. Thus, ESAI needs to save all the values of registers before the system suspend and restore them after the system resume. Signed-off-by: Zidan Wang Acked-by: Nicolin Chen Signed-off-by: Mark Brown --- sound/soc/fsl/fsl_esai.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c index 837979e..aab675a 100644 --- a/sound/soc/fsl/fsl_esai.c +++ b/sound/soc/fsl/fsl_esai.c @@ -652,6 +652,24 @@ static const struct snd_soc_component_driver fsl_esai_component = { .name = "fsl-esai", }; +static const struct reg_default fsl_esai_reg_defaults[] = { + {0x8, 0x00000000}, + {0x10, 0x00000000}, + {0x18, 0x00000000}, + {0x98, 0x00000000}, + {0xd0, 0x00000000}, + {0xd4, 0x00000000}, + {0xd8, 0x00000000}, + {0xdc, 0x00000000}, + {0xe0, 0x00000000}, + {0xe4, 0x0000ffff}, + {0xe8, 0x0000ffff}, + {0xec, 0x0000ffff}, + {0xf0, 0x0000ffff}, + {0xf8, 0x00000000}, + {0xfc, 0x00000000}, +}; + static bool fsl_esai_readable_reg(struct device *dev, unsigned int reg) { switch (reg) { @@ -684,6 +702,31 @@ static bool fsl_esai_readable_reg(struct device *dev, unsigned int reg) } } +static bool fsl_esai_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case REG_ESAI_ETDR: + case REG_ESAI_ERDR: + case REG_ESAI_ESR: + case REG_ESAI_TFSR: + case REG_ESAI_RFSR: + case REG_ESAI_TX0: + case REG_ESAI_TX1: + case REG_ESAI_TX2: + case REG_ESAI_TX3: + case REG_ESAI_TX4: + case REG_ESAI_TX5: + case REG_ESAI_RX0: + case REG_ESAI_RX1: + case REG_ESAI_RX2: + case REG_ESAI_RX3: + case REG_ESAI_SAISR: + return true; + default: + return false; + } +} + static bool fsl_esai_writeable_reg(struct device *dev, unsigned int reg) { switch (reg) { @@ -721,8 +764,12 @@ static const struct regmap_config fsl_esai_regmap_config = { .val_bits = 32, .max_register = REG_ESAI_PCRC, + .reg_defaults = fsl_esai_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(fsl_esai_reg_defaults), .readable_reg = fsl_esai_readable_reg, + .volatile_reg = fsl_esai_volatile_reg, .writeable_reg = fsl_esai_writeable_reg, + .cache_type = REGCACHE_RBTREE, }; static int fsl_esai_probe(struct platform_device *pdev) @@ -853,10 +900,51 @@ static const struct of_device_id fsl_esai_dt_ids[] = { }; MODULE_DEVICE_TABLE(of, fsl_esai_dt_ids); +#if CONFIG_PM_SLEEP +static int fsl_esai_suspend(struct device *dev) +{ + struct fsl_esai *esai = dev_get_drvdata(dev); + + regcache_cache_only(esai->regmap, true); + regcache_mark_dirty(esai->regmap); + + return 0; +} + +static int fsl_esai_resume(struct device *dev) +{ + struct fsl_esai *esai = dev_get_drvdata(dev); + int ret; + + regcache_cache_only(esai->regmap, false); + + /* FIFO reset for safety */ + regmap_update_bits(esai->regmap, REG_ESAI_TFCR, + ESAI_xFCR_xFR, ESAI_xFCR_xFR); + regmap_update_bits(esai->regmap, REG_ESAI_RFCR, + ESAI_xFCR_xFR, ESAI_xFCR_xFR); + + ret = regcache_sync(esai->regmap); + if (ret) + return ret; + + /* FIFO reset done */ + regmap_update_bits(esai->regmap, REG_ESAI_TFCR, ESAI_xFCR_xFR, 0); + regmap_update_bits(esai->regmap, REG_ESAI_RFCR, ESAI_xFCR_xFR, 0); + + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +static const struct dev_pm_ops fsl_esai_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(fsl_esai_suspend, fsl_esai_resume) +}; + static struct platform_driver fsl_esai_driver = { .probe = fsl_esai_probe, .driver = { .name = "fsl-esai-dai", + .pm = &fsl_esai_pm_ops, .of_match_table = fsl_esai_dt_ids, }, };