From patchwork Thu May 5 13:22:56 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Guo X-Patchwork-Id: 94267 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [IPv6:::1]) by ozlabs.org (Postfix) with ESMTP id 85844101A6A for ; Fri, 6 May 2011 00:09:16 +1000 (EST) Received: from mail-pz0-f51.google.com (mail-pz0-f51.google.com [209.85.210.51]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 3BC03B6F35; Thu, 5 May 2011 23:19:26 +1000 (EST) Received: by mail-pz0-f51.google.com with SMTP id 26so1141587pzk.38 for ; Thu, 05 May 2011 06:19:25 -0700 (PDT) Received: by 10.142.234.18 with SMTP id g18mr1224816wfh.104.1304601565698; Thu, 05 May 2011 06:19:25 -0700 (PDT) Received: from localhost.localdomain ([114.216.159.114]) by mx.google.com with ESMTPS id v8sm1430628pbk.95.2011.05.05.06.19.03 (version=TLSv1/SSLv3 cipher=OTHER); Thu, 05 May 2011 06:19:24 -0700 (PDT) From: Shawn Guo To: linux-mmc@vger.kernel.org Subject: [PATCH v2 5/7] mmc: sdhci: consolidate sdhci-of-esdhc and sdhci-esdhc-imx Date: Thu, 5 May 2011 21:22:56 +0800 Message-Id: <1304601778-13837-6-git-send-email-shawn.guo@linaro.org> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1304601778-13837-1-git-send-email-shawn.guo@linaro.org> References: <1304601778-13837-1-git-send-email-shawn.guo@linaro.org> X-Mailman-Approved-At: Fri, 06 May 2011 00:07:33 +1000 Cc: Chris Ball , sameo@linux.intel.com, Arnd Bergmann , patches@linaro.org, Shawn Guo , devicetree-discuss@lists.ozlabs.org, Saeed Bishara , Xiaobo Xie , kernel@pengutronix.de, Mike Rapoport , Olof Johansson , Anton Vorontsov , linuxppc-dev@lists.ozlabs.org, Albert Herranz , linux-arm-kernel@lists.infradead.org X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org This patch is to consolidate SDHCI driver for Freescale eSDHC controller found on both MPCxxx and i.MX platforms. It merges sdhci-of-esdhc.c into sdhci-esdhc.c, so that the same pair of .probe/.remove hook works with eSDHC for two platforms. As the results, sdhci-of-esdhc.c and sdhci-esdhc.h are removed, and header esdhc.h containing the definition of esdhc_platform_data is put into the public folder. Signed-off-by: Shawn Guo --- drivers/mmc/host/Kconfig | 38 ++++--- drivers/mmc/host/Makefile | 3 +- drivers/mmc/host/sdhci-esdhc.c | 244 +++++++++++++++++++++++++++++++++---- drivers/mmc/host/sdhci-esdhc.h | 81 ------------ drivers/mmc/host/sdhci-of-esdhc.c | 142 --------------------- include/linux/mmc/esdhc.h | 27 ++++ 6 files changed, 273 insertions(+), 262 deletions(-) delete mode 100644 drivers/mmc/host/sdhci-esdhc.h delete mode 100644 drivers/mmc/host/sdhci-of-esdhc.c create mode 100644 include/linux/mmc/esdhc.h diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index fdd20ad..e32cb76 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -81,17 +81,6 @@ config MMC_RICOH_MMC If unsure, say Y. -config MMC_SDHCI_OF_ESDHC - bool "SDHCI OF support for the Freescale eSDHC controller" - depends on MMC_SDHCI - depends on PPC_OF - select MMC_SDHCI_PLTFM - select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER - help - This selects the Freescale eSDHC controller support. - - If unsure, say N. - config MMC_SDHCI_OF_HLWD bool "SDHCI OF support for the Nintendo Wii SDHCI controllers" depends on MMC_SDHCI @@ -122,15 +111,34 @@ config MMC_SDHCI_CNS3XXX If unsure, say N. +config MMC_SDHCI_ESDHC + bool + depends on MMC_SDHCI + select MMC_SDHCI_PLTFM + help + This selects SDHCI driver for Freescale eSDHC controller. + +config MMC_SDHCI_ESDHC_MPC + bool "SDHCI support for the Freescale eSDHC MPC controller" + depends on MMC_SDHCI + depends on PPC_OF && PPC_CLOCK + select MMC_SDHCI_ESDHC + select MMC_SDHCI_BIG_ENDIAN_32BIT_BYTE_SWAPPER + help + This selects the Freescale eSDHC controller support on the + MPC platforms. + + If unsure, say N. + config MMC_SDHCI_ESDHC_IMX - tristate "SDHCI platform support for the Freescale eSDHC i.MX controller" + tristate "SDHCI support for the Freescale eSDHC i.MX controller" depends on ARCH_MX25 || ARCH_MX35 || ARCH_MX5 depends on MMC_SDHCI - select MMC_SDHCI_PLTFM + select MMC_SDHCI_ESDHC select MMC_SDHCI_IO_ACCESSORS help - This selects the Freescale eSDHC controller support on the platform - bus, found on platforms like mx35/51. + This selects the Freescale eSDHC controller support on platforms + like mx25/mx35/mx5x. If unsure, say N. diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index 186f0ed..a3f1df8 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -45,10 +45,9 @@ obj-$(CONFIG_MMC_USHC) += ushc.o obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o obj-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o -obj-$(CONFIG_MMC_SDHCI_ESDHC_IMX) += sdhci-esdhc.o +obj-$(CONFIG_MMC_SDHCI_ESDHC) += sdhci-esdhc.o obj-$(CONFIG_MMC_SDHCI_DOVE) += sdhci-dove.o obj-$(CONFIG_MMC_SDHCI_TEGRA) += sdhci-tegra.o -obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o ifeq ($(CONFIG_CB710_DEBUG),y) diff --git a/drivers/mmc/host/sdhci-esdhc.c b/drivers/mmc/host/sdhci-esdhc.c index 8da57d4..f3b4ff5 100644 --- a/drivers/mmc/host/sdhci-esdhc.c +++ b/drivers/mmc/host/sdhci-esdhc.c @@ -1,7 +1,11 @@ /* - * Freescale eSDHC i.MX controller driver for the platform bus. + * Freescale eSDHC i.MX controller driver for MPCxxx and i.MX. * - * derived from the OF-version. + * Copyright (c) 2007 Freescale Semiconductor, Inc. + * Author: Xiaobo Xie + * + * Copyright (c) 2009 MontaVista Software, Inc. + * Author: Anton Vorontsov * * Copyright (c) 2010 Pengutronix e.K. * Author: Wolfram Sang @@ -21,11 +25,40 @@ #include #include #include +#include +#ifdef CONFIG_MMC_SDHCI_ESDHC_IMX #include -#include +#endif #include "sdhci.h" #include "sdhci-pltfm.h" -#include "sdhci-esdhc.h" + +/* + * Ops and quirks for the Freescale eSDHC controller. + */ + +#define ESDHC_DEFAULT_QUIRKS (SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \ + SDHCI_QUIRK_NO_BUSY_IRQ | \ + SDHCI_QUIRK_NONSTANDARD_CLOCK | \ + SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \ + SDHCI_QUIRK_PIO_NEEDS_DELAY | \ + SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) + +#define ESDHC_SYSTEM_CONTROL 0x2c +#define ESDHC_CLOCK_MASK 0x0000fff0 +#define ESDHC_PREDIV_SHIFT 8 +#define ESDHC_DIVIDER_SHIFT 4 +#define ESDHC_CLOCK_PEREN 0x00000004 +#define ESDHC_CLOCK_HCKEN 0x00000002 +#define ESDHC_CLOCK_IPGEN 0x00000001 + +/* OF-specific */ +#define ESDHC_DMA_SYSCTL 0x40c +#define ESDHC_DMA_SNOOP 0x00000040 + +#define ESDHC_HOST_CONTROL_RES 0x05 + +/* pltfm-specific */ +#define ESDHC_HOST_CONTROL_LE 0x20 /* VENDOR SPEC register */ #define SDHCI_VENDOR_SPEC 0xC0 @@ -50,6 +83,117 @@ struct pltfm_imx_data { u32 scratchpad; }; +static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock) +{ + int pre_div = 2; + int div = 1; + u32 temp; + + temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL); + temp &= ~(ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN + | ESDHC_CLOCK_MASK); + sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL); + + if (clock == 0) + goto out; + + while (host->max_clk / pre_div / 16 > clock && pre_div < 256) + pre_div *= 2; + + while (host->max_clk / pre_div / div > clock && div < 16) + div++; + + dev_dbg(mmc_dev(host->mmc), "desired SD clock: %d, actual: %d\n", + clock, host->max_clk / pre_div / div); + + pre_div >>= 1; + div--; + + temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL); + temp |= (ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN + | (div << ESDHC_DIVIDER_SHIFT) + | (pre_div << ESDHC_PREDIV_SHIFT)); + sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL); + mdelay(100); +out: + host->clock = clock; +} + +#ifdef CONFIG_MMC_SDHCI_ESDHC_MPC +static u16 esdhc_readw(struct sdhci_host *host, int reg) +{ + u16 ret; + + if (unlikely(reg == SDHCI_HOST_VERSION)) + ret = in_be16(host->ioaddr + reg); + else + ret = sdhci_be32bs_readw(host, reg); + return ret; +} + +static void esdhc_writew(struct sdhci_host *host, u16 val, int reg) +{ + if (reg == SDHCI_BLOCK_SIZE) { + /* + * Two last DMA bits are reserved, and first one is used for + * non-standard blksz of 4096 bytes that we don't support + * yet. So clear the DMA boundary bits. + */ + val &= ~SDHCI_MAKE_BLKSZ(0x7, 0); + } + sdhci_be32bs_writew(host, val, reg); +} + +static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg) +{ + /* Prevent SDHCI core from writing reserved bits (e.g. HISPD). */ + if (reg == SDHCI_HOST_CONTROL) + val &= ~ESDHC_HOST_CONTROL_RES; + sdhci_be32bs_writeb(host, val, reg); +} + +static int esdhc_of_enable_dma(struct sdhci_host *host) +{ + setbits32(host->ioaddr + ESDHC_DMA_SYSCTL, ESDHC_DMA_SNOOP); + return 0; +} + +static unsigned int esdhc_of_get_max_clock(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + + return pltfm_host->clock; +} + +static unsigned int esdhc_of_get_min_clock(struct sdhci_host *host) +{ + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + + return pltfm_host->clock / 256 / 16; +} + +static struct sdhci_ops sdhci_esdhc_mpc_ops = { + .read_l = sdhci_be32bs_readl, + .read_w = esdhc_readw, + .read_b = sdhci_be32bs_readb, + .write_l = sdhci_be32bs_writel, + .write_w = esdhc_writew, + .write_b = esdhc_writeb, + .set_clock = esdhc_set_clock, + .enable_dma = esdhc_of_enable_dma, + .get_max_clock = esdhc_of_get_max_clock, + .get_min_clock = esdhc_of_get_min_clock, +}; + +static struct sdhci_pltfm_data sdhci_esdhc_mpc_pdata = { + /* card detection could be handled via GPIO */ + .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_CARD_DETECTION + | SDHCI_QUIRK_NO_CARD_NO_RESET, + .ops = &sdhci_esdhc_mpc_ops, +}; +#endif /* CONFIG_MMC_SDHCI_ESDHC_MPC */ + +#ifdef CONFIG_MMC_SDHCI_ESDHC_IMX static inline void esdhc_clrset_le(struct sdhci_host *host, u32 mask, u32 val, int reg) { void __iomem *base = host->ioaddr + (reg & ~0x3); @@ -191,7 +335,7 @@ static unsigned int esdhc_pltfm_get_min_clock(struct sdhci_host *host) return clk_get_rate(pltfm_host->clk) / 256 / 16; } -static struct sdhci_ops sdhci_esdhc_ops = { +static struct sdhci_ops sdhci_esdhc_imx_ops = { .read_l = esdhc_readl_le, .read_w = esdhc_readw_le, .write_l = esdhc_writel_le, @@ -206,8 +350,35 @@ static struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = { .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_BROKEN_CARD_DETECTION, /* ADMA has issues. Might be fixable */ - .ops = &sdhci_esdhc_ops, + .ops = &sdhci_esdhc_imx_ops, +}; +#endif /* CONFIG_MMC_SDHCI_ESDHC_IMX */ + +#ifdef CONFIG_OF +#include +static const struct of_device_id sdhci_esdhc_dt_ids[] = { +#ifdef CONFIG_MMC_SDHCI_ESDHC_IMX + { .compatible = "fsl,imx-esdhc", .data = &sdhci_esdhc_imx_pdata }, +#endif +#ifdef CONFIG_MMC_SDHCI_ESDHC_MPC + { .compatible = "fsl,mpc8379-esdhc", .data = &sdhci_esdhc_mpc_pdata }, + { .compatible = "fsl,mpc8536-esdhc", .data = &sdhci_esdhc_mpc_pdata }, + { .compatible = "fsl,esdhc", .data = &sdhci_esdhc_mpc_pdata }, +#endif + { } }; +MODULE_DEVICE_TABLE(platform, sdhci_esdhc_dt_ids); +#else +#define sdhci_esdhc_dt_ids NULL +#endif + +static const struct platform_device_id sdhci_esdhc_pltfm_ids[] = { +#ifdef CONFIG_MMC_SDHCI_ESDHC_IMX + { "sdhci-esdhc-imx", (kernel_ulong_t)&sdhci_esdhc_imx_pdata }, +#endif + { } +}; +MODULE_DEVICE_TABLE(platform, sdhci_esdhc_pltfm_ids); static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host) { @@ -227,8 +398,20 @@ static irqreturn_t cd_irq(int irq, void *data) return IRQ_HANDLED; }; -static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) +#ifndef CONFIG_MMC_SDHCI_ESDHC_IMX +#define cpu_is_mx25() (0) +#define cpu_is_mx35() (0) +#define cpu_is_mx51() (0) +#define cpu_is_imx() (0) +#else +#define cpu_is_imx() (1) +#endif + +static int __devinit sdhci_esdhc_probe(struct platform_device *pdev) { + const struct platform_device_id *platid = platform_get_device_id(pdev); + const struct of_device_id *dtid = pdev->dev.of_match; + struct sdhci_pltfm_data *pdata; struct sdhci_pltfm_host *pltfm_host; struct sdhci_host *host; struct esdhc_platform_data *boarddata; @@ -236,12 +419,24 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) int err; struct pltfm_imx_data *imx_data; - host = sdhci_pltfm_init(pdev, &sdhci_esdhc_imx_pdata); + if (platid && platid->driver_data) + pdata = (void *)platid->driver_data; + else if (dtid && dtid->data) + pdata = dtid->data; + else + pdata = pdev->dev.platform_data; + + host = sdhci_pltfm_init(pdev, pdata); if (IS_ERR(host)) return PTR_ERR(host); + sdhci_get_of_property(pdev); + pltfm_host = sdhci_priv(host); + if (!cpu_is_imx()) + goto add_host; + imx_data = kzalloc(sizeof(struct pltfm_imx_data), GFP_KERNEL); if (!imx_data) return -ENOMEM; @@ -263,7 +458,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) /* Fix errata ENGcm07207 present on i.MX25 and i.MX35 */ host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK; /* write_protect can't be routed to controller, use gpio */ - sdhci_esdhc_ops.get_ro = esdhc_pltfm_get_ro; + pdata->ops->get_ro = esdhc_pltfm_get_ro; } if (!(cpu_is_mx25() || cpu_is_mx35() || cpu_is_mx51())) @@ -302,6 +497,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION; } + add_host: err = sdhci_add_host(host); if (err) goto err_add_host; @@ -322,7 +518,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) return err; } -static int __devexit sdhci_esdhc_imx_remove(struct platform_device *pdev) +static int __devexit sdhci_esdhc_remove(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); @@ -351,31 +547,35 @@ static int __devexit sdhci_esdhc_imx_remove(struct platform_device *pdev) return 0; } -static struct platform_driver sdhci_esdhc_imx_driver = { +static struct platform_driver sdhci_esdhc_driver = { .driver = { - .name = "sdhci-esdhc-imx", + .name = "sdhci-esdhc", .owner = THIS_MODULE, + .of_match_table = sdhci_esdhc_dt_ids, }, - .probe = sdhci_esdhc_imx_probe, - .remove = __devexit_p(sdhci_esdhc_imx_remove), + .probe = sdhci_esdhc_probe, + .remove = __devexit_p(sdhci_esdhc_remove), + .id_table = sdhci_esdhc_pltfm_ids, #ifdef CONFIG_PM .suspend = sdhci_pltfm_suspend, .resume = sdhci_pltfm_resume, #endif }; -static int __init sdhci_esdhc_imx_init(void) +static int __init sdhci_esdhc_init(void) { - return platform_driver_register(&sdhci_esdhc_imx_driver); + return platform_driver_register(&sdhci_esdhc_driver); } -module_init(sdhci_esdhc_imx_init); +module_init(sdhci_esdhc_init); -static void __exit sdhci_esdhc_imx_exit(void) +static void __exit sdhci_esdhc_exit(void) { - platform_driver_unregister(&sdhci_esdhc_imx_driver); + platform_driver_unregister(&sdhci_esdhc_driver); } -module_exit(sdhci_esdhc_imx_exit); +module_exit(sdhci_esdhc_exit); -MODULE_DESCRIPTION("SDHCI driver for Freescale i.MX eSDHC"); -MODULE_AUTHOR("Wolfram Sang "); +MODULE_DESCRIPTION("SDHCI driver for Freescale eSDHC"); +MODULE_AUTHOR("Xiaobo Xie , " + "Anton Vorontsov , " + "Wolfram Sang "); MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h deleted file mode 100644 index c3b08f1..0000000 --- a/drivers/mmc/host/sdhci-esdhc.h +++ /dev/null @@ -1,81 +0,0 @@ -/* - * Freescale eSDHC controller driver generics for OF and pltfm. - * - * Copyright (c) 2007 Freescale Semiconductor, Inc. - * Copyright (c) 2009 MontaVista Software, Inc. - * Copyright (c) 2010 Pengutronix e.K. - * Author: Wolfram Sang - * - * 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. - */ - -#ifndef _DRIVERS_MMC_SDHCI_ESDHC_H -#define _DRIVERS_MMC_SDHCI_ESDHC_H - -/* - * Ops and quirks for the Freescale eSDHC controller. - */ - -#define ESDHC_DEFAULT_QUIRKS (SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \ - SDHCI_QUIRK_NO_BUSY_IRQ | \ - SDHCI_QUIRK_NONSTANDARD_CLOCK | \ - SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \ - SDHCI_QUIRK_PIO_NEEDS_DELAY | \ - SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) - -#define ESDHC_SYSTEM_CONTROL 0x2c -#define ESDHC_CLOCK_MASK 0x0000fff0 -#define ESDHC_PREDIV_SHIFT 8 -#define ESDHC_DIVIDER_SHIFT 4 -#define ESDHC_CLOCK_PEREN 0x00000004 -#define ESDHC_CLOCK_HCKEN 0x00000002 -#define ESDHC_CLOCK_IPGEN 0x00000001 - -/* pltfm-specific */ -#define ESDHC_HOST_CONTROL_LE 0x20 - -/* OF-specific */ -#define ESDHC_DMA_SYSCTL 0x40c -#define ESDHC_DMA_SNOOP 0x00000040 - -#define ESDHC_HOST_CONTROL_RES 0x05 - -static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock) -{ - int pre_div = 2; - int div = 1; - u32 temp; - - temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL); - temp &= ~(ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN - | ESDHC_CLOCK_MASK); - sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL); - - if (clock == 0) - goto out; - - while (host->max_clk / pre_div / 16 > clock && pre_div < 256) - pre_div *= 2; - - while (host->max_clk / pre_div / div > clock && div < 16) - div++; - - dev_dbg(mmc_dev(host->mmc), "desired SD clock: %d, actual: %d\n", - clock, host->max_clk / pre_div / div); - - pre_div >>= 1; - div--; - - temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL); - temp |= (ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN - | (div << ESDHC_DIVIDER_SHIFT) - | (pre_div << ESDHC_PREDIV_SHIFT)); - sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL); - mdelay(100); -out: - host->clock = clock; -} - -#endif /* _DRIVERS_MMC_SDHCI_ESDHC_H */ diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c deleted file mode 100644 index 2db6a45..0000000 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ /dev/null @@ -1,142 +0,0 @@ -/* - * Freescale eSDHC controller driver. - * - * Copyright (c) 2007 Freescale Semiconductor, Inc. - * Copyright (c) 2009 MontaVista Software, Inc. - * - * Authors: Xiaobo Xie - * Anton Vorontsov - * - * 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 "sdhci-pltfm.h" -#include "sdhci.h" -#include "sdhci-esdhc.h" - -static u16 esdhc_readw(struct sdhci_host *host, int reg) -{ - u16 ret; - - if (unlikely(reg == SDHCI_HOST_VERSION)) - ret = in_be16(host->ioaddr + reg); - else - ret = sdhci_be32bs_readw(host, reg); - return ret; -} - -static void esdhc_writew(struct sdhci_host *host, u16 val, int reg) -{ - if (reg == SDHCI_BLOCK_SIZE) { - /* - * Two last DMA bits are reserved, and first one is used for - * non-standard blksz of 4096 bytes that we don't support - * yet. So clear the DMA boundary bits. - */ - val &= ~SDHCI_MAKE_BLKSZ(0x7, 0); - } - sdhci_be32bs_writew(host, val, reg); -} - -static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg) -{ - /* Prevent SDHCI core from writing reserved bits (e.g. HISPD). */ - if (reg == SDHCI_HOST_CONTROL) - val &= ~ESDHC_HOST_CONTROL_RES; - sdhci_be32bs_writeb(host, val, reg); -} - -static int esdhc_of_enable_dma(struct sdhci_host *host) -{ - setbits32(host->ioaddr + ESDHC_DMA_SYSCTL, ESDHC_DMA_SNOOP); - return 0; -} - -static unsigned int esdhc_of_get_max_clock(struct sdhci_host *host) -{ - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - - return pltfm_host->clock; -} - -static unsigned int esdhc_of_get_min_clock(struct sdhci_host *host) -{ - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - - return pltfm_host->clock / 256 / 16; -} - -static struct sdhci_ops sdhci_esdhc_ops = { - .read_l = sdhci_be32bs_readl, - .read_w = esdhc_readw, - .read_b = sdhci_be32bs_readb, - .write_l = sdhci_be32bs_writel, - .write_w = esdhc_writew, - .write_b = esdhc_writeb, - .set_clock = esdhc_set_clock, - .enable_dma = esdhc_of_enable_dma, - .get_max_clock = esdhc_of_get_max_clock, - .get_min_clock = esdhc_of_get_min_clock, -}; - -static struct sdhci_pltfm_data sdhci_esdhc_pdata = { - /* card detection could be handled via GPIO */ - .quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_CARD_DETECTION - | SDHCI_QUIRK_NO_CARD_NO_RESET, - .ops = &sdhci_esdhc_ops, -}; - -static int __devinit sdhci_esdhc_probe(struct platform_device *pdev) -{ - return sdhci_pltfm_register(pdev, &sdhci_esdhc_pdata); -} - -static int __devexit sdhci_esdhc_remove(struct platform_device *pdev) -{ - return sdhci_pltfm_unregister(pdev); -} - -static const struct of_device_id sdhci_esdhc_of_match[] = { - { .compatible = "fsl,mpc8379-esdhc" }, - { .compatible = "fsl,mpc8536-esdhc" }, - { .compatible = "fsl,esdhc" }, - { } -}; -MODULE_DEVICE_TABLE(of, sdhci_esdhc_of_match); - -static struct platform_driver sdhci_esdhc_driver = { - .driver = { - .name = "sdhci-esdhc", - .owner = THIS_MODULE, - .of_match_table = sdhci_esdhc_of_match, - }, - .probe = sdhci_esdhc_probe, - .remove = __devexit_p(sdhci_esdhc_remove), -#ifdef CONFIG_PM - .suspend = sdhci_pltfm_suspend, - .resume = sdhci_pltfm_resume, -#endif -}; - -static int __init sdhci_esdhc_init(void) -{ - return platform_driver_register(&sdhci_esdhc_driver); -} -module_init(sdhci_esdhc_init); - -static void __exit sdhci_esdhc_exit(void) -{ - platform_driver_unregister(&sdhci_esdhc_driver); -} -module_exit(sdhci_esdhc_exit); - -MODULE_DESCRIPTION("SDHCI OF driver for Freescale MPC eSDHC"); -MODULE_AUTHOR("Xiaobo Xie , " - "Anton Vorontsov "); -MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mmc/esdhc.h b/include/linux/mmc/esdhc.h new file mode 100644 index 0000000..e0f6598 --- /dev/null +++ b/include/linux/mmc/esdhc.h @@ -0,0 +1,27 @@ +/* + * Copyright 2010 Wolfram Sang + * + * 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; version 2 + * of the License. + */ + +#ifndef __LINUX_MMC_ESDHC_H +#define __LINUX_MMC_ESDHC_H + +/** + * struct esdhc_platform_data - optional platform data for esdhc + * + * strongly recommended for i.MX25/35, not needed for other variants + * + * @wp_gpio: gpio for write_protect (-EINVAL if unused) + * @cd_gpio: gpio for card_detect interrupt (-EINVAL if unused) + */ + +struct esdhc_platform_data { + unsigned int wp_gpio; + unsigned int cd_gpio; +}; + +#endif /* __LINUX_MMC_ESDHC_H */