From patchwork Thu Dec 12 14:13:11 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhangfei Gao X-Patchwork-Id: 3332021 Return-Path: X-Original-To: patchwork-linux-mmc@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 7970D9F374 for ; Thu, 12 Dec 2013 14:13:42 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EDB2E20702 for ; Thu, 12 Dec 2013 14:13:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F3CCA206C4 for ; Thu, 12 Dec 2013 14:13:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751755Ab3LLONf (ORCPT ); Thu, 12 Dec 2013 09:13:35 -0500 Received: from mail-wg0-f46.google.com ([74.125.82.46]:49051 "EHLO mail-wg0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751461Ab3LLONe (ORCPT ); Thu, 12 Dec 2013 09:13:34 -0500 Received: by mail-wg0-f46.google.com with SMTP id m15so480008wgh.25 for ; Thu, 12 Dec 2013 06:13:32 -0800 (PST) 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=cLbd/BhlWP/Yp6jdSJGdpVDMv04/KwaTM5CmU+JHX4o=; b=Byno6xcDAorv7wNsa37RJf+Uk2seVOUCZFcDE/h20B11qcVeKyxXGkhXCogkbzcsSE OPkX0l930t9bfDSW9MI9UwX9eyiLOzZOke4XGCASohM1ij3v3BpF1/lSuaHLhlXn1dRu SmSE7jDhbFZRCpwfkhYUyqxXB8DfqW538pzsYwMlleBtiPizXttB6C+h91Ukk9E6+4Xm ANP6hyHwxZSYdGpUi/lusKd+HAbzKgIqPR2DULNLJEPdrP64vwosu2vmWoxbtc7LEzEy oPGldSfsZrS6O/A4XXscLV/rla9NfEyUNneqMivvGbAONJnT8yV5LzkHUL8Q1XQVe2TM xDug== X-Gm-Message-State: ALoCoQnpOlBmmENaxP3Wa7y5t52/N2CsQsqS/jP2ey0YRJ1XsbmLLgMJLl22oGT5nzKU2/Q4CCBX X-Received: by 10.180.74.174 with SMTP id u14mr29758946wiv.45.1386857612726; Thu, 12 Dec 2013 06:13:32 -0800 (PST) Received: from localhost.localdomain ([213.122.173.130]) by mx.google.com with ESMTPSA id mz10sm25338743wic.2.2013.12.12.06.13.20 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 12 Dec 2013 06:13:31 -0800 (PST) From: Zhangfei Gao To: Chris Ball , Arnd Bergmann , Mike Turquette , Rob Herring , Jaehoon Chung , Seungwon Jeon , Kumar Gala , Haojian Zhuang Cc: linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, patches@linaro.org, devicetree@vger.kernel.org, Zhangfei Gao , Zhigang Wang Subject: [PATCH 2/3] mmc: dw_mmc: add dw_mmc-k3 for k3 platform Date: Thu, 12 Dec 2013 22:13:11 +0800 Message-Id: <1386857591-22507-1-git-send-email-zhangfei.gao@linaro.org> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <52A9B9B4.3080105@linaro.org> References: <52A9B9B4.3080105@linaro.org> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 Add dw_mmc-k3.c for k3v2, support sd/emmc Signed-off-by: Zhangfei Gao Signed-off-by: Zhigang Wang --- .../devicetree/bindings/mmc/k3-dw-mshc.txt | 59 +++++++++ drivers/mmc/host/Kconfig | 10 ++ drivers/mmc/host/Makefile | 1 + drivers/mmc/host/dw_mmc-k3.c | 128 ++++++++++++++++++++ 4 files changed, 198 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt create mode 100644 drivers/mmc/host/dw_mmc-k3.c diff --git a/Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt new file mode 100644 index 000000000000..5501c7c1138f --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt @@ -0,0 +1,59 @@ +* Hisilicon specific extensions to the Synopsys Designware Mobile + Storage Host Controller + +Read synopsys-dw-mshc.txt for more details + +The Synopsys designware mobile storage host controller is used to interface +a SoC with storage medium such as eMMC or SD/MMC cards. This file documents +differences between the core Synopsys dw mshc controller properties described +by synopsys-dw-mshc.txt and the properties used by the Hisilicon specific +extensions to the Synopsys Designware Mobile Storage Host Controller. + +Required Properties: + +* compatible: should be one of the following. + - "hisilicon,hi4511-dw-mshc": for controllers with hi4511 specific extentions. +* clock-freq-table: should be the frequency (in Hz) array of the ciu clock + in each supported timing mode. + 1. CIU clock rate in HZ for MMC_TIMING_LEGACY mode + 2. CIU clock rate in HZ for MMC_TIMING_MMC_HS mode + 3. CIU clock rate in HZ for MMC_TIMING_SD_HS mode + 4. CIU clock rate in HZ for MMC_TIMING_UHS_SDR12 mode + 5. CIU clock rate in HZ for MMC_TIMING_UHS_SDR25 mode + 6. CIU clock rate in HZ for MMC_TIMING_UHS_SDR50 mode + 7. CIU clock rate in HZ for MMC_TIMING_UHS_SDR104 mode + 8. CIU clock rate in HZ for MMC_TIMING_SD_HS mode + 9. CIU clock rate in HZ for MMC_TIMING_MMC_HS200 mode + +Example: + + /* for Hi3620 */ + + /* SoC portion */ + dwmmc_0: dwmmc0@fcd03000 { + compatible = "hisilicon,hi4511-dw-mshc"; + reg = <0xfcd03000 0x1000>; + interrupts = <0 16 4>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&mmc_clock HI3620_SD_CIUCLK>, <&clock HI3620_DDRC_PER_CLK>; + clock-names = "ciu", "biu"; + clk-table = + <25000000 0 50000000 25000000 50000000 100000000 0 50000000>; + }; + + /* Board portion */ + dwmmc0@fcd03000 { + num-slots = <1>; + vmmc-supply = <&ldo12>; + fifo-depth = <0x100>; + supports-highspeed; + pinctrl-names = "default"; + pinctrl-0 = <&sd_pmx_pins &sd_cfg_func1 &sd_cfg_func2>; + slot@0 { + reg = <0>; + bus-width = <4>; + disable-wp; + cd-gpios = <&gpio10 3 0>; + }; + }; diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index 7fc5099e44b2..45aaa2de0f58 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -575,6 +575,16 @@ config MMC_DW_SOCFPGA This selects support for Altera SoCFPGA specific extensions to the Synopsys DesignWare Memory Card Interface driver. +config MMC_DW_K3 + tristate "K3 specific extensions for Synopsys DW Memory Card Interface" + depends on MMC_DW + select MMC_DW_PLTFM + select MMC_DW_IDMAC + help + This selects support for Hisilicon K3 SoC specific extensions to the + Synopsys DesignWare Memory Card Interface driver. Select this option + for platforms based on Hisilicon K3 SoC's. + config MMC_DW_PCI tristate "Synopsys Designware MCI support on PCI bus" depends on MMC_DW && PCI diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index c41d0c364509..64f5f8d35839 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_MMC_DW) += dw_mmc.o obj-$(CONFIG_MMC_DW_PLTFM) += dw_mmc-pltfm.o obj-$(CONFIG_MMC_DW_EXYNOS) += dw_mmc-exynos.o obj-$(CONFIG_MMC_DW_SOCFPGA) += dw_mmc-socfpga.o +obj-$(CONFIG_MMC_DW_K3) += dw_mmc-k3.o obj-$(CONFIG_MMC_DW_PCI) += dw_mmc-pci.o obj-$(CONFIG_MMC_SH_MMCIF) += sh_mmcif.o obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o diff --git a/drivers/mmc/host/dw_mmc-k3.c b/drivers/mmc/host/dw_mmc-k3.c new file mode 100644 index 000000000000..54b2503b211f --- /dev/null +++ b/drivers/mmc/host/dw_mmc-k3.c @@ -0,0 +1,128 @@ +/* + * Copyright (c) 2013 Linaro Ltd. + * Copyright (c) 2013 Hisilicon Limited. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include + +#include "dw_mmc.h" +#include "dw_mmc-pltfm.h" + +#define MAX_NUMS 10 +struct dw_mci_k3_priv_data { + u32 clk_table[MAX_NUMS]; +}; + +static void dw_mci_k3_set_ios(struct dw_mci *host, struct mmc_ios *ios) +{ + struct dw_mci_k3_priv_data *priv = host->priv; + + clk_set_rate(host->ciu_clk, priv->clk_table[ios->timing]); + host->bus_hz = clk_get_rate(host->ciu_clk); +} + +static int dw_mci_k3_parse_dt(struct dw_mci *host) +{ + struct dw_mci_k3_priv_data *priv; + struct device_node *node = host->dev->of_node; + struct property *prop; + const __be32 *cur; + u32 val, num = 0; + + priv = devm_kzalloc(host->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) { + dev_err(host->dev, "mem alloc failed for private data\n"); + return -ENOMEM; + } + host->priv = priv; + + of_property_for_each_u32(node, "clock-freq-table", prop, cur, val) { + if (num >= MAX_NUMS) + break; + priv->clk_table[num++] = val; + } + return 0; +} + +static unsigned long k3_dwmmc_caps[4] = { + MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED, + MMC_CAP_8_BIT_DATA | MMC_CAP_MMC_HIGHSPEED, + 0, + 0, +}; + +static const struct dw_mci_drv_data k3_drv_data = { + .caps = k3_dwmmc_caps, + .set_ios = dw_mci_k3_set_ios, + .parse_dt = dw_mci_k3_parse_dt, +}; + +static const struct of_device_id dw_mci_k3_match[] = { + { .compatible = "hisilicon,hi4511-dw-mshc", + .data = &k3_drv_data, }, + {}, +}; +MODULE_DEVICE_TABLE(of, dw_mci_k3_match); + +static int dw_mci_k3_probe(struct platform_device *pdev) +{ + const struct dw_mci_drv_data *drv_data; + const struct of_device_id *match; + + match = of_match_node(dw_mci_k3_match, pdev->dev.of_node); + drv_data = match->data; + + return dw_mci_pltfm_register(pdev, drv_data); +} + +static int dw_mci_k3_suspend(struct device *dev) +{ + struct dw_mci *host = dev_get_drvdata(dev); + + if (!IS_ERR(host->ciu_clk)) + clk_disable_unprepare(host->ciu_clk); + + return dw_mci_suspend(host); +} + +static int dw_mci_k3_resume(struct device *dev) +{ + struct dw_mci *host = dev_get_drvdata(dev); + int ret = 0; + + ret = clk_prepare_enable(host->ciu_clk); + if (ret) { + dev_err(host->dev, "failed to enable ciu clock\n"); + return ret; + } + + return dw_mci_resume(host); +} + +SIMPLE_DEV_PM_OPS(dw_mci_k3_pmops, dw_mci_k3_suspend, dw_mci_k3_resume); + +static struct platform_driver dw_mci_k3_pltfm_driver = { + .probe = dw_mci_k3_probe, + .remove = dw_mci_pltfm_remove, + .driver = { + .name = "dwmmc_k3", + .of_match_table = dw_mci_k3_match, + .pm = &dw_mci_k3_pmops, + }, +}; + +module_platform_driver(dw_mci_k3_pltfm_driver); + +MODULE_DESCRIPTION("K3 Specific DW-MSHC Driver Extension"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:dwmmc-k3");