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-rw-r--r--drivers/mmc/host/Kconfig9
-rw-r--r--drivers/mmc/host/Makefile5
-rw-r--r--drivers/mmc/host/msm_sdcc.c25
-rw-r--r--drivers/mmc/host/msm_sdcc.h4
-rw-r--r--drivers/mmc/host/omap_hsmmc.c34
-rw-r--r--drivers/mmc/host/sdhci-cns3xxx.c97
-rw-r--r--drivers/mmc/host/sdhci-of-core.c4
-rw-r--r--drivers/mmc/host/sdhci-pci.c49
-rw-r--r--drivers/mmc/host/sdhci-pltfm.c17
-rw-r--r--drivers/mmc/host/sdhci-pltfm.h18
-rw-r--r--drivers/mmc/host/sdhci-s3c.c123
-rw-r--r--drivers/mmc/host/sdhci.c53
-rw-r--r--drivers/mmc/host/sdhci.h10
13 files changed, 399 insertions, 49 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index d25e22cee4c4..c997474c649f 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -121,6 +121,15 @@ config MMC_SDHCI_PLTFM
If unsure, say N.
+config MMC_SDHCI_CNS3XXX
+ bool "SDHCI support on the Cavium Networks CNS3xxx SoC"
+ depends on ARCH_CNS3XXX
+ depends on MMC_SDHCI_PLTFM
+ help
+ This selects the SDHCI support for CNS3xxx System-on-Chip devices.
+
+ If unsure, say N.
+
config MMC_SDHCI_S3C
tristate "SDHCI support on Samsung S3C SoC"
depends on MMC_SDHCI && (PLAT_S3C24XX || PLAT_S3C64XX)
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index f4e53c98d944..fe0ba4e2b8b0 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -12,7 +12,6 @@ obj-$(CONFIG_MMC_IMX) += imxmmc.o
obj-$(CONFIG_MMC_MXC) += mxcmmc.o
obj-$(CONFIG_MMC_SDHCI) += sdhci.o
obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o
-obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o
obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o
obj-$(CONFIG_MMC_SDHCI_SPEAR) += sdhci-spear.o
obj-$(CONFIG_MMC_WBSD) += wbsd.o
@@ -38,6 +37,10 @@ obj-$(CONFIG_SDH_BFIN) += bfin_sdh.o
obj-$(CONFIG_MMC_SH_MMCIF) += sh_mmcif.o
obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o
+obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-platform.o
+sdhci-platform-y := sdhci-pltfm.o
+sdhci-platform-$(CONFIG_MMC_SDHCI_CNS3XXX) += sdhci-cns3xxx.o
+
obj-$(CONFIG_MMC_SDHCI_OF) += sdhci-of.o
sdhci-of-y := sdhci-of-core.o
sdhci-of-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o
diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c
index 24e09454e522..3bd8ff71ec22 100644
--- a/drivers/mmc/host/msm_sdcc.c
+++ b/drivers/mmc/host/msm_sdcc.c
@@ -1057,22 +1057,6 @@ msmsdcc_init_dma(struct msmsdcc_host *host)
return 0;
}
-#ifdef CONFIG_MMC_MSM7X00A_RESUME_IN_WQ
-static void
-do_resume_work(struct work_struct *work)
-{
- struct msmsdcc_host *host =
- container_of(work, struct msmsdcc_host, resume_task);
- struct mmc_host *mmc = host->mmc;
-
- if (mmc) {
- mmc_resume_host(mmc);
- if (host->stat_irq)
- enable_irq(host->stat_irq);
- }
-}
-#endif
-
static int
msmsdcc_probe(struct platform_device *pdev)
{
@@ -1145,15 +1129,6 @@ msmsdcc_probe(struct platform_device *pdev)
host->dmares = dmares;
spin_lock_init(&host->lock);
-#ifdef CONFIG_MMC_EMBEDDED_SDIO
- if (plat->embedded_sdio)
- mmc_set_embedded_sdio_data(mmc,
- &plat->embedded_sdio->cis,
- &plat->embedded_sdio->cccr,
- plat->embedded_sdio->funcs,
- plat->embedded_sdio->num_funcs);
-#endif
-
/*
* Setup DMA
*/
diff --git a/drivers/mmc/host/msm_sdcc.h b/drivers/mmc/host/msm_sdcc.h
index da0039c9285e..d7dedcf33b5b 100644
--- a/drivers/mmc/host/msm_sdcc.h
+++ b/drivers/mmc/host/msm_sdcc.h
@@ -235,10 +235,6 @@ struct msmsdcc_host {
int cmdpoll;
struct msmsdcc_stats stats;
-#ifdef CONFIG_MMC_MSM7X00A_RESUME_IN_WQ
- struct work_struct resume_task;
-#endif
-
/* Command parameters */
unsigned int cmd_timeout;
unsigned int cmd_pio_irqmask;
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index b032828c6126..dc57ef6aef4f 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1273,8 +1273,11 @@ static void omap_hsmmc_dma_cb(int lch, u16 ch_status, void *cb_data)
struct mmc_data *data = host->mrq->data;
int dma_ch, req_in_progress;
- if (ch_status & OMAP2_DMA_MISALIGNED_ERR_IRQ)
- dev_dbg(mmc_dev(host->mmc), "MISALIGNED_ADRS_ERR\n");
+ if (!(ch_status & OMAP_DMA_BLOCK_IRQ)) {
+ dev_warn(mmc_dev(host->mmc), "unexpected dma status %x\n",
+ ch_status);
+ return;
+ }
spin_lock(&host->irq_lock);
if (host->dma_ch < 0) {
@@ -1598,6 +1601,14 @@ static int omap_hsmmc_get_ro(struct mmc_host *mmc)
return mmc_slot(host).get_ro(host->dev, 0);
}
+static void omap_hsmmc_init_card(struct mmc_host *mmc, struct mmc_card *card)
+{
+ struct omap_hsmmc_host *host = mmc_priv(mmc);
+
+ if (mmc_slot(host).init_card)
+ mmc_slot(host).init_card(card);
+}
+
static void omap_hsmmc_conf_bus_power(struct omap_hsmmc_host *host)
{
u32 hctl, capa, value;
@@ -1869,6 +1880,7 @@ static const struct mmc_host_ops omap_hsmmc_ops = {
.set_ios = omap_hsmmc_set_ios,
.get_cd = omap_hsmmc_get_cd,
.get_ro = omap_hsmmc_get_ro,
+ .init_card = omap_hsmmc_init_card,
/* NYET -- enable_sdio_irq */
};
@@ -1879,6 +1891,7 @@ static const struct mmc_host_ops omap_hsmmc_ps_ops = {
.set_ios = omap_hsmmc_set_ios,
.get_cd = omap_hsmmc_get_cd,
.get_ro = omap_hsmmc_get_ro,
+ .init_card = omap_hsmmc_init_card,
/* NYET -- enable_sdio_irq */
};
@@ -2096,10 +2109,23 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED |
MMC_CAP_WAIT_WHILE_BUSY;
- if (mmc_slot(host).wires >= 8)
+ switch (mmc_slot(host).wires) {
+ case 8:
mmc->caps |= MMC_CAP_8_BIT_DATA;
- else if (mmc_slot(host).wires >= 4)
+ /* Fall through */
+ case 4:
mmc->caps |= MMC_CAP_4_BIT_DATA;
+ break;
+ case 1:
+ /* Nothing to crib here */
+ case 0:
+ /* Assuming nothing was given by board, Core use's 1-Bit */
+ break;
+ default:
+ /* Completely unexpected.. Core goes with 1-Bit Width */
+ dev_crit(mmc_dev(host->mmc), "Invalid width %d\n used!"
+ "using 1 instead\n", mmc_slot(host).wires);
+ }
if (mmc_slot(host).nonremovable)
mmc->caps |= MMC_CAP_NONREMOVABLE;
diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c
new file mode 100644
index 000000000000..b7050b380d5f
--- /dev/null
+++ b/drivers/mmc/host/sdhci-cns3xxx.c
@@ -0,0 +1,97 @@
+/*
+ * SDHCI support for CNS3xxx SoC
+ *
+ * Copyright 2008 Cavium Networks
+ * Copyright 2010 MontaVista Software, LLC.
+ *
+ * Authors: Scott Shu
+ * Anton Vorontsov <avorontsov@mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/mmc/host.h>
+#include <linux/sdhci-pltfm.h>
+#include <mach/cns3xxx.h>
+#include "sdhci.h"
+#include "sdhci-pltfm.h"
+
+static unsigned int sdhci_cns3xxx_get_max_clk(struct sdhci_host *host)
+{
+ return 150000000;
+}
+
+static void sdhci_cns3xxx_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ struct device *dev = mmc_dev(host->mmc);
+ int div = 1;
+ u16 clk;
+ unsigned long timeout;
+
+ if (clock == host->clock)
+ return;
+
+ sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+
+ if (clock == 0)
+ goto out;
+
+ while (host->max_clk / div > clock) {
+ /*
+ * On CNS3xxx divider grows linearly up to 4, and then
+ * exponentially up to 256.
+ */
+ if (div < 4)
+ div += 1;
+ else if (div < 256)
+ div *= 2;
+ else
+ break;
+ }
+
+ dev_dbg(dev, "desired SD clock: %d, actual: %d\n",
+ clock, host->max_clk / div);
+
+ /* Divide by 3 is special. */
+ if (div != 3)
+ div >>= 1;
+
+ clk = div << SDHCI_DIVIDER_SHIFT;
+ clk |= SDHCI_CLOCK_INT_EN;
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+
+ timeout = 20;
+ while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
+ & SDHCI_CLOCK_INT_STABLE)) {
+ if (timeout == 0) {
+ dev_warn(dev, "clock is unstable");
+ break;
+ }
+ timeout--;
+ mdelay(1);
+ }
+
+ clk |= SDHCI_CLOCK_CARD_EN;
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+out:
+ host->clock = clock;
+}
+
+static struct sdhci_ops sdhci_cns3xxx_ops = {
+ .get_max_clock = sdhci_cns3xxx_get_max_clk,
+ .set_clock = sdhci_cns3xxx_set_clock,
+};
+
+struct sdhci_pltfm_data sdhci_cns3xxx_pdata = {
+ .ops = &sdhci_cns3xxx_ops,
+ .quirks = SDHCI_QUIRK_BROKEN_DMA |
+ SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
+ SDHCI_QUIRK_INVERTED_WRITE_PROTECT |
+ SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
+ SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
+ SDHCI_QUIRK_NONSTANDARD_CLOCK,
+};
diff --git a/drivers/mmc/host/sdhci-of-core.c b/drivers/mmc/host/sdhci-of-core.c
index a2e9820cd42f..dd1bdd168e66 100644
--- a/drivers/mmc/host/sdhci-of-core.c
+++ b/drivers/mmc/host/sdhci-of-core.c
@@ -154,6 +154,10 @@ static int __devinit sdhci_of_probe(struct of_device *ofdev,
host->ops = &sdhci_of_data->ops;
}
+ if (of_get_property(np, "sdhci,auto-cmd12", NULL))
+ host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12;
+
+
if (of_get_property(np, "sdhci,1-bit-only", NULL))
host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 65483fdea45b..e8aa99deae9a 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -17,6 +17,7 @@
#include <linux/pci.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
+#include <linux/device.h>
#include <linux/mmc/host.h>
@@ -84,7 +85,30 @@ static int ricoh_probe(struct sdhci_pci_chip *chip)
if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
+ return 0;
+}
+
+static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
+{
+ slot->host->caps =
+ ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
+ & SDHCI_TIMEOUT_CLK_MASK) |
+
+ ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
+ & SDHCI_CLOCK_BASE_MASK) |
+ SDHCI_TIMEOUT_CLK_UNIT |
+ SDHCI_CAN_VDD_330 |
+ SDHCI_CAN_DO_SDMA;
+ return 0;
+}
+
+static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
+{
+ /* Apply a delay to allow controller to settle */
+ /* Otherwise it becomes confused if card state changed
+ during suspend */
+ msleep(500);
return 0;
}
@@ -95,6 +119,15 @@ static const struct sdhci_pci_fixes sdhci_ricoh = {
SDHCI_QUIRK_CLOCK_BEFORE_RESET,
};
+static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
+ .probe_slot = ricoh_mmc_probe_slot,
+ .resume = ricoh_mmc_resume,
+ .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
+ SDHCI_QUIRK_CLOCK_BEFORE_RESET |
+ SDHCI_QUIRK_NO_CARD_NO_RESET |
+ SDHCI_QUIRK_MISSING_CAPS
+};
+
static const struct sdhci_pci_fixes sdhci_ene_712 = {
.quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
SDHCI_QUIRK_BROKEN_DMA,
@@ -374,6 +407,22 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
},
{
+ .vendor = PCI_VENDOR_ID_RICOH,
+ .device = 0x843,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
+ },
+
+ {
+ .vendor = PCI_VENDOR_ID_RICOH,
+ .device = 0xe822,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
+ },
+
+ {
.vendor = PCI_VENDOR_ID_ENE,
.device = PCI_DEVICE_ID_ENE_CB712_SD,
.subvendor = PCI_ANY_ID,
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index b6ee0d719698..e045e3c61dde 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -24,6 +24,7 @@
#include <linux/delay.h>
#include <linux/highmem.h>
+#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include <linux/mmc/host.h>
@@ -32,6 +33,7 @@
#include <linux/sdhci-pltfm.h>
#include "sdhci.h"
+#include "sdhci-pltfm.h"
/*****************************************************************************\
* *
@@ -51,10 +53,14 @@ static struct sdhci_ops sdhci_pltfm_ops = {
static int __devinit sdhci_pltfm_probe(struct platform_device *pdev)
{
struct sdhci_pltfm_data *pdata = pdev->dev.platform_data;
+ const struct platform_device_id *platid = platform_get_device_id(pdev);
struct sdhci_host *host;
struct resource *iomem;
int ret;
+ if (!pdata && platid && platid->driver_data)
+ pdata = (void *)platid->driver_data;
+
iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!iomem) {
ret = -ENOMEM;
@@ -150,6 +156,15 @@ static int __devexit sdhci_pltfm_remove(struct platform_device *pdev)
return 0;
}
+static const struct platform_device_id sdhci_pltfm_ids[] = {
+ { "sdhci", },
+#ifdef CONFIG_MMC_SDHCI_CNS3XXX
+ { "sdhci-cns3xxx", (kernel_ulong_t)&sdhci_cns3xxx_pdata },
+#endif
+ { },
+};
+MODULE_DEVICE_TABLE(platform, sdhci_pltfm_ids);
+
static struct platform_driver sdhci_pltfm_driver = {
.driver = {
.name = "sdhci",
@@ -157,6 +172,7 @@ static struct platform_driver sdhci_pltfm_driver = {
},
.probe = sdhci_pltfm_probe,
.remove = __devexit_p(sdhci_pltfm_remove),
+ .id_table = sdhci_pltfm_ids,
};
/*****************************************************************************\
@@ -181,4 +197,3 @@ module_exit(sdhci_drv_exit);
MODULE_DESCRIPTION("Secure Digital Host Controller Interface platform driver");
MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:sdhci");
diff --git a/drivers/mmc/host/sdhci-pltfm.h b/drivers/mmc/host/sdhci-pltfm.h
new file mode 100644
index 000000000000..900f32902f73
--- /dev/null
+++ b/drivers/mmc/host/sdhci-pltfm.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2010 MontaVista Software, LLC.
+ *
+ * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _DRIVERS_MMC_SDHCI_PLTFM_H
+#define _DRIVERS_MMC_SDHCI_PLTFM_H
+
+#include <linux/sdhci-pltfm.h>
+
+extern struct sdhci_pltfm_data sdhci_cns3xxx_pdata;
+
+#endif /* _DRIVERS_MMC_SDHCI_PLTFM_H */
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index ad30f074ee15..0a7f2614c6f0 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -18,6 +18,7 @@
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/io.h>
+#include <linux/gpio.h>
#include <linux/mmc/host.h>
@@ -44,6 +45,8 @@ struct sdhci_s3c {
struct resource *ioarea;
struct s3c_sdhci_platdata *pdata;
unsigned int cur_clk;
+ int ext_cd_irq;
+ int ext_cd_gpio;
struct clk *clk_io;
struct clk *clk_bus[MAX_BUS_CLK];
@@ -110,11 +113,6 @@ static unsigned int sdhci_s3c_get_max_clk(struct sdhci_host *host)
return max;
}
-static unsigned int sdhci_s3c_get_timeout_clk(struct sdhci_host *host)
-{
- return sdhci_s3c_get_max_clk(host) / 1000000;
-}
-
/**
* sdhci_s3c_consider_clock - consider one the bus clocks for current setting
* @ourhost: Our SDHCI instance.
@@ -188,7 +186,6 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
ourhost->cur_clk = best_src;
host->max_clk = clk_get_rate(clk);
- host->timeout_clk = sdhci_s3c_get_timeout_clk(host);
ctrl = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
ctrl &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
@@ -209,12 +206,93 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
}
}
+/**
+ * sdhci_s3c_get_min_clock - callback to get minimal supported clock value
+ * @host: The SDHCI host being queried
+ *
+ * To init mmc host properly a minimal clock value is needed. For high system
+ * bus clock's values the standard formula gives values out of allowed range.
+ * The clock still can be set to lower values, if clock source other then
+ * system bus is selected.
+*/
+static unsigned int sdhci_s3c_get_min_clock(struct sdhci_host *host)
+{
+ struct sdhci_s3c *ourhost = to_s3c(host);
+ unsigned int delta, min = UINT_MAX;
+ int src;
+
+ for (src = 0; src < MAX_BUS_CLK; src++) {
+ delta = sdhci_s3c_consider_clock(ourhost, src, 0);
+ if (delta == UINT_MAX)
+ continue;
+ /* delta is a negative value in this case */
+ if (-delta < min)
+ min = -delta;
+ }
+ return min;
+}
+
static struct sdhci_ops sdhci_s3c_ops = {
.get_max_clock = sdhci_s3c_get_max_clk,
- .get_timeout_clock = sdhci_s3c_get_timeout_clk,
.set_clock = sdhci_s3c_set_clock,
+ .get_min_clock = sdhci_s3c_get_min_clock,
};
+static void sdhci_s3c_notify_change(struct platform_device *dev, int state)
+{
+ struct sdhci_host *host = platform_get_drvdata(dev);
+ if (host) {
+ mutex_lock(&host->lock);
+ if (state) {
+ dev_dbg(&dev->dev, "card inserted.\n");
+ host->flags &= ~SDHCI_DEVICE_DEAD;
+ host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
+ } else {
+ dev_dbg(&dev->dev, "card removed.\n");
+ host->flags |= SDHCI_DEVICE_DEAD;
+ host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;
+ }
+ sdhci_card_detect(host);
+ mutex_unlock(&host->lock);
+ }
+}
+
+static irqreturn_t sdhci_s3c_gpio_card_detect_thread(int irq, void *dev_id)
+{
+ struct sdhci_s3c *sc = dev_id;
+ int status = gpio_get_value(sc->ext_cd_gpio);
+ if (sc->pdata->ext_cd_gpio_invert)
+ status = !status;
+ sdhci_s3c_notify_change(sc->pdev, status);
+ return IRQ_HANDLED;
+}
+
+static void sdhci_s3c_setup_card_detect_gpio(struct sdhci_s3c *sc)
+{
+ struct s3c_sdhci_platdata *pdata = sc->pdata;
+ struct device *dev = &sc->pdev->dev;
+
+ if (gpio_request(pdata->ext_cd_gpio, "SDHCI EXT CD") == 0) {
+ sc->ext_cd_gpio = pdata->ext_cd_gpio;
+ sc->ext_cd_irq = gpio_to_irq(pdata->ext_cd_gpio);
+ if (sc->ext_cd_irq &&
+ request_threaded_irq(sc->ext_cd_irq, NULL,
+ sdhci_s3c_gpio_card_detect_thread,
+ IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+ dev_name(dev), sc) == 0) {
+ int status = gpio_get_value(sc->ext_cd_gpio);
+ if (pdata->ext_cd_gpio_invert)
+ status = !status;
+ sdhci_s3c_notify_change(sc->pdev, status);
+ } else {
+ dev_warn(dev, "cannot request irq for card detect\n");
+ sc->ext_cd_irq = 0;
+ }
+ } else {
+ dev_err(dev, "cannot request gpio for card detect\n");
+ }
+}
+
static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
{
struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data;
@@ -252,6 +330,7 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
sc->host = host;
sc->pdev = pdev;
sc->pdata = pdata;
+ sc->ext_cd_gpio = -1; /* invalid gpio number */
platform_set_drvdata(pdev, host);
@@ -318,6 +397,7 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
/* Setup quirks for the controller */
host->quirks |= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC;
+ host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT;
#ifndef CONFIG_MMC_SDHCI_S3C_DMA
@@ -332,15 +412,34 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
* SDHCI block, or a missing configuration that needs to be set. */
host->quirks |= SDHCI_QUIRK_NO_BUSY_IRQ;
+ if (pdata->cd_type == S3C_SDHCI_CD_NONE ||
+ pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
+ host->quirks |= SDHCI_QUIRK_BROKEN_CARD_DETECTION;
+
+ if (pdata->cd_type == S3C_SDHCI_CD_PERMANENT)
+ host->mmc->caps = MMC_CAP_NONREMOVABLE;
+
host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR |
SDHCI_QUIRK_32BIT_DMA_SIZE);
+ /* HSMMC on Samsung SoCs uses SDCLK as timeout clock */
+ host->quirks |= SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK;
+
ret = sdhci_add_host(host);
if (ret) {
dev_err(dev, "sdhci_add_host() failed\n");
goto err_add_host;
}
+ /* The following two methods of card detection might call
+ sdhci_s3c_notify_change() immediately, so they can be called
+ only after sdhci_add_host(). Setup errors are ignored. */
+ if (pdata->cd_type == S3C_SDHCI_CD_EXTERNAL && pdata->ext_cd_init)
+ pdata->ext_cd_init(&sdhci_s3c_notify_change);
+ if (pdata->cd_type == S3C_SDHCI_CD_GPIO &&
+ gpio_is_valid(pdata->ext_cd_gpio))
+ sdhci_s3c_setup_card_detect_gpio(sc);
+
return 0;
err_add_host:
@@ -365,10 +464,20 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
{
+ struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data;
struct sdhci_host *host = platform_get_drvdata(pdev);
struct sdhci_s3c *sc = sdhci_priv(host);
int ptr;
+ if (pdata->cd_type == S3C_SDHCI_CD_EXTERNAL && pdata->ext_cd_cleanup)
+ pdata->ext_cd_cleanup(&sdhci_s3c_notify_change);
+
+ if (sc->ext_cd_irq)
+ free_irq(sc->ext_cd_irq, sc);
+
+ if (gpio_is_valid(sc->ext_cd_gpio))
+ gpio_free(sc->ext_cd_gpio);
+
sdhci_remove_host(host, 1);
for (ptr = 0; ptr < 3; ptr++) {
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c6d1bd8d4ac4..785512133b50 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -19,6 +19,7 @@
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/scatterlist.h>
+#include <linux/regulator/consumer.h>
#include <linux/leds.h>
@@ -817,8 +818,12 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host,
WARN_ON(!host->data);
mode = SDHCI_TRNS_BLK_CNT_EN;
- if (data->blocks > 1)
- mode |= SDHCI_TRNS_MULTI;
+ if (data->blocks > 1) {
+ if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12)
+ mode |= SDHCI_TRNS_MULTI | SDHCI_TRNS_ACMD12;
+ else
+ mode |= SDHCI_TRNS_MULTI;
+ }
if (data->flags & MMC_DATA_READ)
mode |= SDHCI_TRNS_READ;
if (host->flags & SDHCI_REQ_USE_DMA)
@@ -1108,6 +1113,12 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
#ifndef SDHCI_USE_LEDS_CLASS
sdhci_activate_led(host);
#endif
+ if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12) {
+ if (mrq->stop) {
+ mrq->data->stop = NULL;
+ mrq->stop = NULL;
+ }
+ }
host->mrq = mrq;
@@ -1159,6 +1170,11 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
+ if (ios->bus_width == MMC_BUS_WIDTH_8)
+ ctrl |= SDHCI_CTRL_8BITBUS;
+ else
+ ctrl &= ~SDHCI_CTRL_8BITBUS;
+
if (ios->bus_width == MMC_BUS_WIDTH_4)
ctrl |= SDHCI_CTRL_4BITBUS;
else
@@ -1603,7 +1619,10 @@ int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state)
free_irq(host->irq, host);
- return 0;
+ if (host->vmmc)
+ ret = regulator_disable(host->vmmc);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(sdhci_suspend_host);
@@ -1612,6 +1631,13 @@ int sdhci_resume_host(struct sdhci_host *host)
{
int ret;
+ if (host->vmmc) {
+ int ret = regulator_enable(host->vmmc);
+ if (ret)
+ return ret;
+ }
+
+
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
if (host->ops->enable_dma)
host->ops->enable_dma(host);
@@ -1687,7 +1713,8 @@ int sdhci_add_host(struct sdhci_host *host)
host->version);
}
- caps = sdhci_readl(host, SDHCI_CAPABILITIES);
+ caps = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps :
+ sdhci_readl(host, SDHCI_CAPABILITIES);
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_SDMA;
@@ -1785,13 +1812,12 @@ int sdhci_add_host(struct sdhci_host *host)
* Set host parameters.
*/
mmc->ops = &sdhci_ops;
- if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK &&
- host->ops->set_clock && host->ops->get_min_clock)
+ if (host->ops->get_min_clock)
mmc->f_min = host->ops->get_min_clock(host);
else
mmc->f_min = host->max_clk / 256;
mmc->f_max = host->max_clk;
- mmc->caps = MMC_CAP_SDIO_IRQ;
+ mmc->caps |= MMC_CAP_SDIO_IRQ;
if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA))
mmc->caps |= MMC_CAP_4_BIT_DATA;
@@ -1884,6 +1910,14 @@ int sdhci_add_host(struct sdhci_host *host)
if (ret)
goto untasklet;
+ host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
+ if (IS_ERR(host->vmmc)) {
+ printk(KERN_INFO "%s: no vmmc regulator found\n", mmc_hostname(mmc));
+ host->vmmc = NULL;
+ } else {
+ regulator_enable(host->vmmc);
+ }
+
sdhci_init(host, 0);
#ifdef CONFIG_MMC_DEBUG
@@ -1968,6 +2002,11 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
tasklet_kill(&host->card_tasklet);
tasklet_kill(&host->finish_tasklet);
+ if (host->vmmc) {
+ regulator_disable(host->vmmc);
+ regulator_put(host->vmmc);
+ }
+
kfree(host->adma_desc);
kfree(host->align_buffer);
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index c8468134adc9..036cfae76368 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -72,6 +72,7 @@
#define SDHCI_CTRL_ADMA1 0x08
#define SDHCI_CTRL_ADMA32 0x10
#define SDHCI_CTRL_ADMA64 0x18
+#define SDHCI_CTRL_8BITBUS 0x20
#define SDHCI_POWER_CONTROL 0x29
#define SDHCI_POWER_ON 0x01
@@ -240,12 +241,18 @@ struct sdhci_host {
#define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN (1<<25)
/* Controller cannot support End Attribute in NOP ADMA descriptor */
#define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26)
+/* Controller is missing device caps. Use caps provided by host */
+#define SDHCI_QUIRK_MISSING_CAPS (1<<27)
+/* Controller uses Auto CMD12 command to stop the transfer */
+#define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 (1<<28)
int irq; /* Device IRQ */
void __iomem * ioaddr; /* Mapped address */
const struct sdhci_ops *ops; /* Low level hw interface */
+ struct regulator *vmmc; /* Power regulator */
+
/* Internal data */
struct mmc_host *mmc; /* MMC structure */
u64 dma_mask; /* custom DMA mask */
@@ -292,6 +299,8 @@ struct sdhci_host {
struct timer_list timer; /* Timer for timeouts */
+ unsigned int caps; /* Alternative capabilities */
+
unsigned long private[0] ____cacheline_aligned;
};
@@ -407,6 +416,7 @@ static inline void *sdhci_priv(struct sdhci_host *host)
return (void *)host->private;
}
+extern void sdhci_card_detect(struct sdhci_host *host);
extern int sdhci_add_host(struct sdhci_host *host);
extern void sdhci_remove_host(struct sdhci_host *host, int dead);
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-17 09:53:01 +0300