From patchwork Fri Mar 21 12:14:03 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 3873491 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 9C15C9F370 for ; Fri, 21 Mar 2014 12:17:53 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A5E5F2026C for ; Fri, 21 Mar 2014 12:17:52 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6E4DB20268 for ; Fri, 21 Mar 2014 12:17:51 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WQyN1-0007Dz-64; Fri, 21 Mar 2014 12:16:20 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WQyMi-0003Ob-B8; Fri, 21 Mar 2014 12:16:00 +0000 Received: from mail-lb0-f181.google.com ([209.85.217.181]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WQyLx-0003Fy-Dh for linux-arm-kernel@lists.infradead.org; Fri, 21 Mar 2014 12:15:14 +0000 Received: by mail-lb0-f181.google.com with SMTP id c11so1555932lbj.40 for ; Fri, 21 Mar 2014 05:14:51 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=pU6iCOpSf7jBeDGWU8L9g8G/Ogz8RLULRy7EmhdA7V8=; b=U4dvpUveB2u9rttDBZuCj3HM8eqPUTbX7AiN3G/RJd2d9npaKQn3REmM0WLSCE/ZqV ohC8wWSd7F4t4tdDdWM4v4+BMrknWak5+oTKR7FerdXyGE82m57sqoKzvje/FB/eCB5a qLIcRVugtrTaKF+HagfwFINjWVNae4aSrxxMXN8CTxNN4ozFjqNa2EO7Qga3xaimPGKJ 2D7eobPX+X7kGC2VyhRLBu9YSJ5JvnICMM97Ap5MgNFPp0GUFAT8fXxVWQ4RUQW/uZis wR3mDQn7XRu0TtSQeFzxhR1ZDNrhtM2xBADim2q3qdLY3a6ChNYmNr5J3K+btmOpJX/c x7cw== X-Gm-Message-State: ALoCoQlIdkdSjgPd5dqFz1/6Yd2H9uCPyIk66EfQuytXFx3BWlZ12VoZASlBDkc2KJg4xXceLc6D X-Received: by 10.112.118.20 with SMTP id ki20mr1229890lbb.45.1395404091369; Fri, 21 Mar 2014 05:14:51 -0700 (PDT) Received: from linaro-ulf.lan (90-231-160-185-no158.tbcn.telia.com. [90.231.160.185]) by mx.google.com with ESMTPSA id tq9sm3255263lbb.10.2014.03.21.05.14.49 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 21 Mar 2014 05:14:50 -0700 (PDT) From: Ulf Hansson To: linux-arm-kernel@lists.infradead.org, Russell King , Linus Walleij Subject: [PATCH 06/20] mmc: mmci: Use the common mmc DT parser Date: Fri, 21 Mar 2014 13:14:03 +0100 Message-Id: <1395404057-27835-7-git-send-email-ulf.hansson@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1395404057-27835-1-git-send-email-ulf.hansson@linaro.org> References: <1395404057-27835-1-git-send-email-ulf.hansson@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140321_081513_722214_E648355F X-CRM114-Status: GOOD ( 20.84 ) X-Spam-Score: -2.6 (--) Cc: devicetree@vger.kernel.org, Ulf Hansson X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Let mmci DT parser only handle the specific bindings related to mmci and extend the DT support by converting to the common mmc DT parser. While both DT and platform data exist, DT takes precedence. If there are supplied DT data, the card detect and write protect GPIOS are enforced to be provided through it. Signed-off-by: Ulf Hansson --- drivers/mmc/host/mmci.c | 92 +++++++++++++++++------------------------------ 1 file changed, 33 insertions(+), 59 deletions(-) diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 76e41ba..2e1d1b2 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -1386,58 +1386,31 @@ static struct mmc_host_ops mmci_ops = { .start_signal_voltage_switch = mmci_sig_volt_switch, }; -#ifdef CONFIG_OF static void mmci_dt_populate_generic_pdata(struct device_node *np, struct mmci_platform_data *pdata) { u32 sigdir = 0; - int bus_width = 0; if (!of_property_read_u32(np, "signal-direction", &sigdir)) { sigdir &= MCI_ST_DATA2DIREN|MCI_ST_CMDDIREN|MCI_ST_DATA0DIREN| MCI_ST_DATA31DIREN|MCI_ST_FBCLKEN|MCI_ST_DATA74DIREN; pdata->sigdir = sigdir; } +} - pdata->gpio_wp = of_get_named_gpio(np, "wp-gpios", 0); - pdata->gpio_cd = of_get_named_gpio(np, "cd-gpios", 0); - - if (of_get_property(np, "cd-inverted", NULL)) - pdata->cd_invert = true; - else - pdata->cd_invert = false; - - of_property_read_u32(np, "max-frequency", &pdata->f_max); - if (!pdata->f_max) - pr_warn("%s has no 'max-frequency' property\n", np->full_name); +static int mmci_of_parse(struct device_node *np, struct mmc_host *mmc) +{ + int ret = mmc_of_parse(mmc); + if (ret) + return ret; if (of_get_property(np, "mmc-cap-mmc-highspeed", NULL)) - pdata->capabilities |= MMC_CAP_MMC_HIGHSPEED; + mmc->caps |= MMC_CAP_MMC_HIGHSPEED; if (of_get_property(np, "mmc-cap-sd-highspeed", NULL)) - pdata->capabilities |= MMC_CAP_SD_HIGHSPEED; + mmc->caps |= MMC_CAP_SD_HIGHSPEED; - of_property_read_u32(np, "bus-width", &bus_width); - switch (bus_width) { - case 0 : - /* No bus-width supplied. */ - break; - case 4 : - pdata->capabilities |= MMC_CAP_4_BIT_DATA; - break; - case 8 : - pdata->capabilities |= MMC_CAP_8_BIT_DATA; - break; - default : - pr_warn("%s: Unsupported bus width\n", np->full_name); - } -} -#else -static void mmci_dt_populate_generic_pdata(struct device_node *np, - struct mmci_platform_data *pdata) -{ - return; + return 0; } -#endif static int mmci_probe(struct amba_device *dev, const struct amba_id *id) @@ -1472,6 +1445,10 @@ static int mmci_probe(struct amba_device *dev, if (!mmc) return -ENOMEM; + ret = mmci_of_parse(np, mmc); + if (ret) + goto host_free; + host = mmc_priv(mmc); host->mmc = mmc; @@ -1525,14 +1502,15 @@ static int mmci_probe(struct amba_device *dev, else mmc->f_min = DIV_ROUND_UP(host->mclk, 512); /* - * If the platform data supplies a maximum operating - * frequency, this takes precedence. Else, we fall back - * to using the module parameter, which has a (low) - * default value in case it is not specified. Either - * value must not exceed the clock rate into the block, - * of course. + * If no maximum operating frequency is supplied, fall back to use + * the module parameter, which has a (low) default value in case it + * is not specified. Either value must not exceed the clock rate into + * the block, of course. Also note that DT takes precedence over + * platform data. */ - if (plat->f_max) + if (mmc->f_max) + mmc->f_max = min(host->mclk, mmc->f_max); + else if (plat->f_max) mmc->f_max = min(host->mclk, plat->f_max); else mmc->f_max = min(host->mclk, fmax); @@ -1545,11 +1523,14 @@ static int mmci_probe(struct amba_device *dev, else if (plat->ocr_mask) dev_warn(mmc_dev(mmc), "Platform OCR mask is ignored\n"); - mmc->caps = plat->capabilities; - mmc->caps2 = plat->capabilities2; - if (!plat->cd_invert) - mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; - mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; + /* DT takes precedence over platform data. */ + mmc->caps = np ? mmc->caps : plat->capabilities; + mmc->caps2 = np ? mmc->caps2 : plat->capabilities2; + if (!np) { + if (!plat->cd_invert) + mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; + mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; + } if (variant->busy_detect) { mmci_ops.card_busy = mmci_card_busy; @@ -1561,7 +1542,7 @@ static int mmci_probe(struct amba_device *dev, mmc->ops = &mmci_ops; /* We support these PM capabilities. */ - mmc->pm_caps = MMC_PM_KEEP_POWER; + mmc->pm_caps |= MMC_PM_KEEP_POWER; /* * We can do SGIO @@ -1598,20 +1579,13 @@ static int mmci_probe(struct amba_device *dev, writel(0, host->base + MMCIMASK1); writel(0xfff, host->base + MMCICLEAR); - if (plat->gpio_cd == -EPROBE_DEFER) { - ret = -EPROBE_DEFER; - goto clk_disable; - } - if (gpio_is_valid(plat->gpio_cd)) { + /* If DT, cd/wp gpios must be supplied through it. */ + if (!np && gpio_is_valid(plat->gpio_cd)) { ret = mmc_gpio_request_cd(mmc, plat->gpio_cd, 0); if (ret) goto clk_disable; } - if (plat->gpio_wp == -EPROBE_DEFER) { - ret = -EPROBE_DEFER; - goto clk_disable; - } - if (gpio_is_valid(plat->gpio_wp)) { + if (!np && gpio_is_valid(plat->gpio_wp)) { ret = mmc_gpio_request_ro(mmc, plat->gpio_wp); if (ret) goto clk_disable;