+++ /dev/null
-diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
-index d84c880..3e79f43 100644
---- a/drivers/mmc/core/core.c
-+++ b/drivers/mmc/core/core.c
-@@ -59,10 +59,11 @@ static int mmc_schedule_delayed_work(struct delayed_work *work,
- /*
- * Internal function. Flush all scheduled work from the MMC work queue.
- */
--static void mmc_flush_scheduled_work(void)
-+void mmc_flush_scheduled_work(void)
- {
- flush_workqueue(workqueue);
- }
-+EXPORT_SYMBOL_GPL(mmc_flush_scheduled_work);
-
- /**
- * mmc_request_done - finish processing an MMC request
---- a/include/linux/mmc/core.h
-+++ b/include/linux/mmc/core.h
-@@ -129,6 +129,8 @@ struct mmc_request {
- struct mmc_host;
- struct mmc_card;
-
-+extern void mmc_flush_scheduled_work(void);
-+
- extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
- extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
- extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *,
-diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
-index 891ef18..fa1889a 100644
---- a/drivers/mmc/host/Kconfig
-+++ b/drivers/mmc/host/Kconfig
-@@ -55,6 +55,18 @@ config MMC_SDHCI_PCI
-
- If unsure, say N.
-
-+config MMC_SDHCI_S3C
-+ tristate "SDHCI support on Samsung S3C SoC"
-+ depends on MMC_SDHCI && PLAT_S3C24XX
-+ help
-+ This selects the Secure Digital Host Controller Interface (SDHCI)
-+ often referrered to as the HSMMC block in some of the Samsung S3C
-+ range of SoC.
-+
-+ If you have a controller with this interface, say Y or M here.
-+
-+ If unsure, say N.
-+
- config MMC_RICOH_MMC
- tristate "Ricoh MMC Controller Disabler (EXPERIMENTAL)"
- depends on MMC_SDHCI_PCI
-diff --git a/arch/arm/plat-s3c/include/plat/sdhci.h b/arch/arm/plat-s3c/include/plat/sdhci.h
-index f615308..570da2d 100644
---- a/arch/arm/plat-s3c/include/plat/sdhci.h
-+++ b/arch/arm/plat-s3c/include/plat/sdhci.h
-@@ -29,6 +29,7 @@ struct mmc_ios;
- * is necessary the controllers and/or GPIO blocks require the
- * changing of driver-strength and other controls dependant on
- * the card and speed of operation.
-+ * sdhci_host: Pointer kept during init, allows presence change notification
- *
- * Initialisation data specific to either the machine or the platform
- * for the device driver to use or call-back when configuring gpio or
-@@ -45,8 +46,11 @@ struct s3c_sdhci_platdata {
- void __iomem *regbase,
- struct mmc_ios *ios,
- struct mmc_card *card);
-+ struct sdhci_host * sdhci_host;
- };
-
-+extern void sdhci_s3c_force_presence_change(struct platform_device *pdev);
-+
- /**
- * s3c_sdhci0_set_platdata - Set platform data for S3C SDHCI device.
- * @pd: Platform data to register to device.
---- /dev/null
-+++ b/arch/arm/mach-s3c2410/include/mach/mci.h
-@@ -0,0 +1,13 @@
-+#ifndef _ARCH_MCI_H
-+#define _ARCH_MCI_H
-+
-+struct s3c24xx_mci_pdata {
-+ unsigned int gpio_detect;
-+ unsigned int gpio_wprotect;
-+ unsigned long ocr_avail;
-+ unsigned int do_dma;
-+ void (*set_power)(unsigned char power_mode,
-+ unsigned short vdd);
-+};
-+
-+#endif /* _ARCH_NCI_H */
-diff --git a/arch/arm/mach-s3c2440/s3c2440.c b/arch/arm/mach-s3c2440/s3c2440.c
-index ac1f7ea..f7f8f31 100644
---- a/arch/arm/mach-s3c2440/s3c2440.c
-+++ b/arch/arm/mach-s3c2440/s3c2440.c
-@@ -46,6 +46,9 @@ int __init s3c2440_init(void)
- s3c_device_wdt.resource[1].start = IRQ_S3C2440_WDT;
- s3c_device_wdt.resource[1].end = IRQ_S3C2440_WDT;
-
-+ /* make sure SD/MMC driver can distinguish 2440 from 2410 */
-+ s3c_device_sdi.name = "s3c2440-sdi";
-+
- /* register our system device for everything else */
-
- return sysdev_register(&s3c2440_sysdev);
-diff --git a/arch/arm/mach-s3c2442/s3c2442.c b/arch/arm/mach-s3c2442/s3c2442.c
-index 4663bdc..9602d57 100644
---- a/arch/arm/mach-s3c2442/s3c2442.c
-+++ b/arch/arm/mach-s3c2442/s3c2442.c
-@@ -21,6 +21,7 @@
-
- #include <plat/s3c2442.h>
- #include <plat/cpu.h>
-+#include <plat/devs.h>
-
- static struct sys_device s3c2442_sysdev = {
- .cls = &s3c2442_sysclass,
-@@ -30,5 +31,8 @@ int __init s3c2442_init(void)
- {
- printk("S3C2442: Initialising architecture\n");
-
-+ /* make sure SD/MMC driver can distinguish 2440 from 2410 */
-+ s3c_device_sdi.name = "s3c2440-sdi";
-+
- return sysdev_register(&s3c2442_sysdev);
- }
-diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
-index cf153f6..c25f464 100644
---- a/drivers/mmc/host/Makefile
-+++ b/drivers/mmc/host/Makefile
-@@ -13,6 +13,7 @@ endif
- obj-$(CONFIG_MMC_MXC) += mxcmmc.o
- obj-$(CONFIG_MMC_SDHCI) += sdhci.o
- obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o
-+obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o
- obj-$(CONFIG_MMC_RICOH_MMC) += ricoh_mmc.o
- obj-$(CONFIG_MMC_SDHCI_OF) += sdhci-of.o
- obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o
-diff --git a/drivers/mmc/host/s3cmci.h b/drivers/mmc/host/s3cmci.h
-index ca1ba3d..7f80047 100644
---- a/drivers/mmc/host/s3cmci.h
-+++ b/drivers/mmc/host/s3cmci.h
-@@ -8,6 +8,10 @@
- * published by the Free Software Foundation.
- */
-
-+
-+#include <mach/regs-sdi.h>
-+#include <linux/regulator/consumer.h>
-+
- /* FIXME: DMA Resource management ?! */
- #define S3CMCI_DMA 0
-
-@@ -68,7 +72,16 @@ struct s3cmci_host {
- unsigned int ccnt, dcnt;
- struct tasklet_struct pio_tasklet;
-
-+ /*
-+ * Here's where we save the registers during suspend. Note that we skip
-+ * SDIDATA, which is at different positions on 2410 and 2440, so
-+ * there's no "+1" in the array size.
-+ */
-+ u32 saved[(S3C2410_SDIIMSK-S3C2410_SDICON)/4];
-+
- #ifdef CONFIG_CPU_FREQ
- struct notifier_block freq_transition;
- #endif
-+
-+ struct regulator *regulator;
- };
-diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
-index 8c08cd7..b3cded4 100644
---- a/drivers/mmc/host/s3cmci.c
-+++ b/drivers/mmc/host/s3cmci.c
-@@ -2,6 +2,7 @@
- * linux/drivers/mmc/s3cmci.h - Samsung S3C MCI driver
- *
- * Copyright (C) 2004-2006 maintech GmbH, Thomas Kleffel <tk@maintech.de>
-+ * Copyright (C) 2007 Harald Welte <laforge@gnumonks.org>
- *
- * Current driver maintained by Ben Dooks and Simtec Electronics
- * Copyright (C) 2008 Simtec Electronics <ben-linux@fluff.org>
-@@ -25,9 +26,18 @@
-
- #include <mach/regs-sdi.h>
- #include <mach/regs-gpio.h>
-+#include <mach/hardware.h>
-
- #include <plat/mci.h>
-
-+#include <asm/dma.h>
-+#include <asm/dma-mapping.h>
-+
-+#include <asm/io.h>
-+#include <mach/regs-gpio.h>
-+#include <mach/mci.h>
-+#include <mach/dma.h>
-+
- #include "s3cmci.h"
-
- #define DRIVER_NAME "s3c-mci"
-@@ -48,6 +58,9 @@ static const int dbgmap_err = dbg_fail;
- static const int dbgmap_info = dbg_info | dbg_conf;
- static const int dbgmap_debug = dbg_err | dbg_debug;
-
-+static int f_max = -1; /* override maximum frequency limit */
-+static int persist; /* keep interface alive across suspend/resume */
-+
- #define dbg(host, channels, args...) \
- do { \
- if (dbgmap_err & channels) \
-@@ -281,8 +294,11 @@ static void do_pio_read(struct s3cmci_host *host)
- * an even multiple of 4. */
- if (fifo >= host->pio_bytes)
- fifo = host->pio_bytes;
-- else
-+ else {
- fifo -= fifo & 3;
-+ if (!fifo)
-+ break;
-+ }
-
- host->pio_bytes -= fifo;
- host->pio_count += fifo;
-@@ -330,7 +346,7 @@ static void do_pio_write(struct s3cmci_host *host)
-
- to_ptr = host->base + host->sdidata;
-
-- while ((fifo = fifo_free(host)) > 3) {
-+ while ((fifo = fifo_free(host))) {
- if (!host->pio_bytes) {
- res = get_data_buffer(host, &host->pio_bytes,
- &host->pio_ptr);
-@@ -354,8 +370,11 @@ static void do_pio_write(struct s3cmci_host *host)
- * words, so round down to an even multiple of 4. */
- if (fifo >= host->pio_bytes)
- fifo = host->pio_bytes;
-- else
-+ else {
- fifo -= fifo & 3;
-+ if (!fifo)
-+ break;
-+ }
-
- host->pio_bytes -= fifo;
- host->pio_count += fifo;
-@@ -374,7 +393,6 @@ static void pio_tasklet(unsigned long data)
- {
- struct s3cmci_host *host = (struct s3cmci_host *) data;
-
--
- disable_irq(host->irq);
-
- if (host->pio_active == XFER_WRITE)
-@@ -615,7 +633,6 @@ irq_out:
-
- spin_unlock_irqrestore(&host->complete_lock, iflags);
- return IRQ_HANDLED;
--
- }
-
- /*
-@@ -1027,6 +1044,7 @@ static void s3cmci_send_request(struct mmc_host *mmc)
- dbg(host, dbg_err, "data prepare error %d\n", res);
- cmd->error = res;
- cmd->data->error = res;
-+ cmd->data->error = -EIO;
-
- mmc_request_done(mmc, mrq);
- return;
-@@ -1264,10 +1282,8 @@ static int __devinit s3cmci_probe(struct platform_device *pdev, int is2440)
- host->is2440 = is2440;
-
- host->pdata = pdev->dev.platform_data;
-- if (!host->pdata) {
-- pdev->dev.platform_data = &s3cmci_def_pdata;
-+ if (!host->pdata)
- host->pdata = &s3cmci_def_pdata;
-- }
-
- spin_lock_init(&host->complete_lock);
- tasklet_init(&host->pio_tasklet, pio_tasklet, (unsigned long) host);
-@@ -1380,6 +1396,18 @@ static int __devinit s3cmci_probe(struct platform_device *pdev, int is2440)
- mmc->f_min = host->clk_rate / (host->clk_div * 256);
- mmc->f_max = host->clk_rate / host->clk_div;
-
-+ if (f_max >= 0) {
-+ unsigned f = f_max;
-+
-+ if (f < mmc->f_min)
-+ f = mmc->f_min;
-+ if (mmc->f_max > f) {
-+ dev_info(&pdev->dev, "f_max lowered from %u to %u Hz\n",
-+ mmc->f_max, f);
-+ mmc->f_max = f;
-+ }
-+ }
-+
- if (host->pdata->ocr_avail)
- mmc->ocr_avail = host->pdata->ocr_avail;
-
-@@ -1492,18 +1520,60 @@ static int __devinit s3cmci_2440_probe(struct platform_device *dev)
-
- #ifdef CONFIG_PM
-
-+static int save_regs(struct mmc_host *mmc)
-+{
-+ struct s3cmci_host *host = mmc_priv(mmc);
-+ unsigned long flags;
-+ unsigned from;
-+ u32 *to = host->saved;
-+
-+ mmc_flush_scheduled_work();
-+
-+ local_irq_save(flags);
-+ for (from = S3C2410_SDICON; from != S3C2410_SDIIMSK+4; from += 4)
-+ if (from != host->sdidata)
-+ *to++ = readl(host->base + from);
-+ BUG_ON(to-host->saved != ARRAY_SIZE(host->saved));
-+ local_irq_restore(flags);
-+
-+ return 0;
-+}
-+
-+static int restore_regs(struct mmc_host *mmc)
-+{
-+ struct s3cmci_host *host = mmc_priv(mmc);
-+ unsigned long flags;
-+ unsigned to;
-+ u32 *from = host->saved;
-+
-+ /*
-+ * Before we begin with the necromancy, make sure we don't
-+ * inadvertently start something we'll regret microseconds later.
-+ */
-+ from[S3C2410_SDICMDCON - S3C2410_SDICON] = 0;
-+
-+ local_irq_save(flags);
-+ for (to = S3C2410_SDICON; to != S3C2410_SDIIMSK+4; to += 4)
-+ if (to != host->sdidata)
-+ writel(*from++, host->base + to);
-+ BUG_ON(from-host->saved != ARRAY_SIZE(host->saved));
-+ local_irq_restore(flags);
-+
-+ return 0;
-+}
-+
- static int s3cmci_suspend(struct platform_device *dev, pm_message_t state)
- {
- struct mmc_host *mmc = platform_get_drvdata(dev);
-
-- return mmc_suspend_host(mmc, state);
-+ return persist ? save_regs(mmc) : mmc_suspend_host(mmc, state);
- }
-
- static int s3cmci_resume(struct platform_device *dev)
- {
- struct mmc_host *mmc = platform_get_drvdata(dev);
-
-- return mmc_resume_host(mmc);
-+ return persist ? restore_regs(mmc) : mmc_resume_host(mmc);
- }
-
- #else /* CONFIG_PM */
-@@ -1561,9 +1631,13 @@ static void __exit s3cmci_exit(void)
- module_init(s3cmci_init);
- module_exit(s3cmci_exit);
-
-+module_param(f_max, int, 0644);
-+module_param(persist, int, 0644);
-+
- MODULE_DESCRIPTION("Samsung S3C MMC/SD Card Interface driver");
- MODULE_LICENSE("GPL v2");
- MODULE_AUTHOR("Thomas Kleffel <tk@maintech.de>, Ben Dooks <ben-linux@fluff.org>");
- MODULE_ALIAS("platform:s3c2410-sdi");
- MODULE_ALIAS("platform:s3c2412-sdi");
- MODULE_ALIAS("platform:s3c2440-sdi");
-+
-
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