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-rw-r--r--drivers/mfd/Kconfig21
-rw-r--r--drivers/mfd/Makefile2
-rw-r--r--drivers/mfd/t7l66xb.c419
-rw-r--r--drivers/mfd/tc6387xb.c181
-rw-r--r--drivers/mfd/tc6393xb.c159
-rw-r--r--drivers/mmc/host/Kconfig6
-rw-r--r--drivers/mmc/host/Makefile1
-rw-r--r--drivers/mmc/host/tmio_mmc.c691
-rw-r--r--drivers/mmc/host/tmio_mmc.h194
-rw-r--r--drivers/mtd/nand/Kconfig7
-rw-r--r--drivers/mtd/nand/Makefile1
-rw-r--r--drivers/mtd/nand/tmio_nand.c556
12 files changed, 2172 insertions, 66 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 883e7ea31de..10c44d3fe01 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -50,10 +50,31 @@ config HTC_PASIC3
HTC Magician devices, respectively. Actual functionality is
handled by the leds-pasic3 and ds1wm drivers.
+config MFD_TMIO
+ bool
+ default n
+
+config MFD_T7L66XB
+ bool "Support Toshiba T7L66XB"
+ depends on ARM
+ select MFD_CORE
+ select MFD_TMIO
+ help
+ Support for Toshiba Mobile IO Controller T7L66XB
+
+config MFD_TC6387XB
+ bool "Support Toshiba TC6387XB"
+ depends on ARM
+ select MFD_CORE
+ select MFD_TMIO
+ help
+ Support for Toshiba Mobile IO Controller TC6387XB
+
config MFD_TC6393XB
bool "Support Toshiba TC6393XB"
depends on GPIOLIB && ARM
select MFD_CORE
+ select MFD_TMIO
help
Support for Toshiba Mobile IO Controller TC6393XB
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 33daa2f45dd..03ad239ecef 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -8,6 +8,8 @@ obj-$(CONFIG_MFD_ASIC3) += asic3.o
obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o
obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
+obj-$(CONFIG_MFD_T7L66XB) += t7l66xb.o
+obj-$(CONFIG_MFD_TC6387XB) += tc6387xb.o
obj-$(CONFIG_MFD_TC6393XB) += tc6393xb.o
obj-$(CONFIG_MFD_CORE) += mfd-core.o
diff --git a/drivers/mfd/t7l66xb.c b/drivers/mfd/t7l66xb.c
new file mode 100644
index 00000000000..49a0fffc02a
--- /dev/null
+++ b/drivers/mfd/t7l66xb.c
@@ -0,0 +1,419 @@
+/*
+ *
+ * Toshiba T7L66XB core mfd support
+ *
+ * Copyright (c) 2005, 2007, 2008 Ian Molton
+ * Copyright (c) 2008 Dmitry Baryshkov
+ *
+ * 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.
+ *
+ * T7L66 features:
+ *
+ * Supported in this driver:
+ * SD/MMC
+ * SM/NAND flash controller
+ *
+ * As yet not supported
+ * GPIO interface (on NAND pins)
+ * Serial interface
+ * TFT 'interface converter'
+ * PCMCIA interface logic
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/tmio.h>
+#include <linux/mfd/t7l66xb.h>
+
+enum {
+ T7L66XB_CELL_NAND,
+ T7L66XB_CELL_MMC,
+};
+
+#define SCR_REVID 0x08 /* b Revision ID */
+#define SCR_IMR 0x42 /* b Interrupt Mask */
+#define SCR_DEV_CTL 0xe0 /* b Device control */
+#define SCR_ISR 0xe1 /* b Interrupt Status */
+#define SCR_GPO_OC 0xf0 /* b GPO output control */
+#define SCR_GPO_OS 0xf1 /* b GPO output enable */
+#define SCR_GPI_S 0xf2 /* w GPI status */
+#define SCR_APDC 0xf8 /* b Active pullup down ctrl */
+
+#define SCR_DEV_CTL_USB BIT(0) /* USB enable */
+#define SCR_DEV_CTL_MMC BIT(1) /* MMC enable */
+
+/*--------------------------------------------------------------------------*/
+
+struct t7l66xb {
+ void __iomem *scr;
+ /* Lock to protect registers requiring read/modify/write ops. */
+ spinlock_t lock;
+
+ struct resource rscr;
+ int irq;
+ int irq_base;
+};
+
+/*--------------------------------------------------------------------------*/
+
+static int t7l66xb_mmc_enable(struct platform_device *mmc)
+{
+ struct platform_device *dev = to_platform_device(mmc->dev.parent);
+ struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
+ struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
+ unsigned long flags;
+ u8 dev_ctl;
+
+ if (pdata->enable_clk32k)
+ pdata->enable_clk32k(dev);
+
+ spin_lock_irqsave(&t7l66xb->lock, flags);
+
+ dev_ctl = tmio_ioread8(t7l66xb->scr + SCR_DEV_CTL);
+ dev_ctl |= SCR_DEV_CTL_MMC;
+ tmio_iowrite8(dev_ctl, t7l66xb->scr + SCR_DEV_CTL);
+
+ spin_unlock_irqrestore(&t7l66xb->lock, flags);
+
+ return 0;
+}
+
+static int t7l66xb_mmc_disable(struct platform_device *mmc)
+{
+ struct platform_device *dev = to_platform_device(mmc->dev.parent);
+ struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
+ struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
+ unsigned long flags;
+ u8 dev_ctl;
+
+ spin_lock_irqsave(&t7l66xb->lock, flags);
+
+ dev_ctl = tmio_ioread8(t7l66xb->scr + SCR_DEV_CTL);
+ dev_ctl &= ~SCR_DEV_CTL_MMC;
+ tmio_iowrite8(dev_ctl, t7l66xb->scr + SCR_DEV_CTL);
+
+ spin_unlock_irqrestore(&t7l66xb->lock, flags);
+
+ if (pdata->disable_clk32k)
+ pdata->disable_clk32k(dev);
+
+ return 0;
+}
+
+/*--------------------------------------------------------------------------*/
+
+const static struct resource t7l66xb_mmc_resources[] = {
+ {
+ .start = 0x800,
+ .end = 0x9ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0x200,
+ .end = 0x2ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_T7L66XB_MMC,
+ .end = IRQ_T7L66XB_MMC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+const static struct resource t7l66xb_nand_resources[] = {
+ {
+ .start = 0xc00,
+ .end = 0xc07,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0x0100,
+ .end = 0x01ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_T7L66XB_NAND,
+ .end = IRQ_T7L66XB_NAND,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct mfd_cell t7l66xb_cells[] = {
+ [T7L66XB_CELL_MMC] = {
+ .name = "tmio-mmc",
+ .enable = t7l66xb_mmc_enable,
+ .disable = t7l66xb_mmc_disable,
+ .num_resources = ARRAY_SIZE(t7l66xb_mmc_resources),
+ .resources = t7l66xb_mmc_resources,
+ },
+ [T7L66XB_CELL_NAND] = {
+ .name = "tmio-nand",
+ .num_resources = ARRAY_SIZE(t7l66xb_nand_resources),
+ .resources = t7l66xb_nand_resources,
+ },
+};
+
+/*--------------------------------------------------------------------------*/
+
+/* Handle the T7L66XB interrupt mux */
+static void t7l66xb_irq(unsigned int irq, struct irq_desc *desc)
+{
+ struct t7l66xb *t7l66xb = get_irq_data(irq);
+ unsigned int isr;
+ unsigned int i, irq_base;
+
+ irq_base = t7l66xb->irq_base;
+
+ while ((isr = tmio_ioread8(t7l66xb->scr + SCR_ISR) &
+ ~tmio_ioread8(t7l66xb->scr + SCR_IMR)))
+ for (i = 0; i < T7L66XB_NR_IRQS; i++)
+ if (isr & (1 << i))
+ generic_handle_irq(irq_base + i);
+}
+
+static void t7l66xb_irq_mask(unsigned int irq)
+{
+ struct t7l66xb *t7l66xb = get_irq_chip_data(irq);
+ unsigned long flags;
+ u8 imr;
+
+ spin_lock_irqsave(&t7l66xb->lock, flags);
+ imr = tmio_ioread8(t7l66xb->scr + SCR_IMR);
+ imr |= 1 << (irq - t7l66xb->irq_base);
+ tmio_iowrite8(imr, t7l66xb->scr + SCR_IMR);
+ spin_unlock_irqrestore(&t7l66xb->lock, flags);
+}
+
+static void t7l66xb_irq_unmask(unsigned int irq)
+{
+ struct t7l66xb *t7l66xb = get_irq_chip_data(irq);
+ unsigned long flags;
+ u8 imr;
+
+ spin_lock_irqsave(&t7l66xb->lock, flags);
+ imr = tmio_ioread8(t7l66xb->scr + SCR_IMR);
+ imr &= ~(1 << (irq - t7l66xb->irq_base));
+ tmio_iowrite8(imr, t7l66xb->scr + SCR_IMR);
+ spin_unlock_irqrestore(&t7l66xb->lock, flags);
+}
+
+static struct irq_chip t7l66xb_chip = {
+ .name = "t7l66xb",
+ .ack = t7l66xb_irq_mask,
+ .mask = t7l66xb_irq_mask,
+ .unmask = t7l66xb_irq_unmask,
+};
+
+/*--------------------------------------------------------------------------*/
+
+/* Install the IRQ handler */
+static void t7l66xb_attach_irq(struct platform_device *dev)
+{
+ struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
+ unsigned int irq, irq_base;
+
+ irq_base = t7l66xb->irq_base;
+
+ for (irq = irq_base; irq < irq_base + T7L66XB_NR_IRQS; irq++) {
+ set_irq_chip(irq, &t7l66xb_chip);
+ set_irq_chip_data(irq, t7l66xb);
+ set_irq_handler(irq, handle_level_irq);
+#ifdef CONFIG_ARM
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+#endif
+ }
+
+ set_irq_type(t7l66xb->irq, IRQ_TYPE_EDGE_FALLING);
+ set_irq_data(t7l66xb->irq, t7l66xb);
+ set_irq_chained_handler(t7l66xb->irq, t7l66xb_irq);
+}
+
+static void t7l66xb_detach_irq(struct platform_device *dev)
+{
+ struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
+ unsigned int irq, irq_base;
+
+ irq_base = t7l66xb->irq_base;
+
+ set_irq_chained_handler(t7l66xb->irq, NULL);
+ set_irq_data(t7l66xb->irq, NULL);
+
+ for (irq = irq_base; irq < irq_base + T7L66XB_NR_IRQS; irq++) {
+#ifdef CONFIG_ARM
+ set_irq_flags(irq, 0);
+#endif
+ set_irq_chip(irq, NULL);
+ set_irq_chip_data(irq, NULL);
+ }
+}
+
+/*--------------------------------------------------------------------------*/
+
+#ifdef CONFIG_PM
+static int t7l66xb_suspend(struct platform_device *dev, pm_message_t state)
+{
+ struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
+
+ if (pdata && pdata->suspend)
+ pdata->suspend(dev);
+
+ return 0;
+}
+
+static int t7l66xb_resume(struct platform_device *dev)
+{
+ struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
+
+ if (pdata && pdata->resume)
+ pdata->resume(dev);
+
+ return 0;
+}
+#else
+#define t7l66xb_suspend NULL
+#define t7l66xb_resume NULL
+#endif
+
+/*--------------------------------------------------------------------------*/
+
+static int t7l66xb_probe(struct platform_device *dev)
+{
+ struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
+ struct t7l66xb *t7l66xb;
+ struct resource *iomem, *rscr;
+ int ret;
+
+ iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!iomem)
+ return -EINVAL;
+
+ t7l66xb = kzalloc(sizeof *t7l66xb, GFP_KERNEL);
+ if (!t7l66xb)
+ return -ENOMEM;
+
+ spin_lock_init(&t7l66xb->lock);
+
+ platform_set_drvdata(dev, t7l66xb);
+
+ ret = platform_get_irq(dev, 0);
+ if (ret >= 0)
+ t7l66xb->irq = ret;
+ else
+ goto err_noirq;
+
+ t7l66xb->irq_base = pdata->irq_base;
+
+ rscr = &t7l66xb->rscr;
+ rscr->name = "t7l66xb-core";
+ rscr->start = iomem->start;
+ rscr->end = iomem->start + 0xff;
+ rscr->flags = IORESOURCE_MEM;
+
+ ret = request_resource(iomem, rscr);
+ if (ret)
+ goto err_request_scr;
+
+ t7l66xb->scr = ioremap(rscr->start, rscr->end - rscr->start + 1);
+ if (!t7l66xb->scr) {
+ ret = -ENOMEM;
+ goto err_ioremap;
+ }
+
+ if (pdata && pdata->enable)
+ pdata->enable(dev);
+
+ /* Mask all interrupts */
+ tmio_iowrite8(0xbf, t7l66xb->scr + SCR_IMR);
+
+ printk(KERN_INFO "%s rev %d @ 0x%08lx, irq %d\n",
+ dev->name, tmio_ioread8(t7l66xb->scr + SCR_REVID),
+ (unsigned long)iomem->start, t7l66xb->irq);
+
+ t7l66xb_attach_irq(dev);
+
+ t7l66xb_cells[T7L66XB_CELL_NAND].driver_data = pdata->nand_data;
+ t7l66xb_cells[T7L66XB_CELL_NAND].platform_data =
+ &t7l66xb_cells[T7L66XB_CELL_NAND];
+ t7l66xb_cells[T7L66XB_CELL_NAND].data_size =
+ sizeof(t7l66xb_cells[T7L66XB_CELL_NAND]);
+
+ t7l66xb_cells[T7L66XB_CELL_MMC].platform_data =
+ &t7l66xb_cells[T7L66XB_CELL_MMC];
+ t7l66xb_cells[T7L66XB_CELL_MMC].data_size =
+ sizeof(t7l66xb_cells[T7L66XB_CELL_MMC]);
+
+ ret = mfd_add_devices(&dev->dev, dev->id,
+ t7l66xb_cells, ARRAY_SIZE(t7l66xb_cells),
+ iomem, t7l66xb->irq_base);
+
+ if (!ret)
+ return 0;
+
+ t7l66xb_detach_irq(dev);
+ iounmap(t7l66xb->scr);
+err_ioremap:
+ release_resource(&t7l66xb->rscr);
+err_noirq:
+err_request_scr:
+ kfree(t7l66xb);
+ return ret;
+}
+
+static int t7l66xb_remove(struct platform_device *dev)
+{
+ struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
+ struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
+ int ret;
+
+ ret = pdata->disable(dev);
+
+ t7l66xb_detach_irq(dev);
+ iounmap(t7l66xb->scr);
+ release_resource(&t7l66xb->rscr);
+ mfd_remove_devices(&dev->dev);
+ platform_set_drvdata(dev, NULL);
+ kfree(t7l66xb);
+
+ return ret;
+
+}
+
+static struct platform_driver t7l66xb_platform_driver = {
+ .driver = {
+ .name = "t7l66xb",
+ .owner = THIS_MODULE,
+ },
+ .suspend = t7l66xb_suspend,
+ .resume = t7l66xb_resume,
+ .probe = t7l66xb_probe,
+ .remove = t7l66xb_remove,
+};
+
+/*--------------------------------------------------------------------------*/
+
+static int __init t7l66xb_init(void)
+{
+ int retval = 0;
+
+ retval = platform_driver_register(&t7l66xb_platform_driver);
+ return retval;
+}
+
+static void __exit t7l66xb_exit(void)
+{
+ platform_driver_unregister(&t7l66xb_platform_driver);
+}
+
+module_init(t7l66xb_init);
+module_exit(t7l66xb_exit);
+
+MODULE_DESCRIPTION("Toshiba T7L66XB core driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Ian Molton");
+MODULE_ALIAS("platform:t7l66xb");
diff --git a/drivers/mfd/tc6387xb.c b/drivers/mfd/tc6387xb.c
new file mode 100644
index 00000000000..a22b21ac6cf
--- /dev/null
+++ b/drivers/mfd/tc6387xb.c
@@ -0,0 +1,181 @@
+/*
+ * Toshiba TC6387XB support
+ * Copyright (c) 2005 Ian Molton
+ *
+ * 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.
+ *
+ * This file contains TC6387XB base support.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/tmio.h>
+#include <linux/mfd/tc6387xb.h>
+
+enum {
+ TC6387XB_CELL_MMC,
+};
+
+#ifdef CONFIG_PM
+static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state)
+{
+ struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev);
+
+ if (pdata && pdata->suspend)
+ pdata->suspend(dev);
+
+ return 0;
+}
+
+static int tc6387xb_resume(struct platform_device *dev)
+{
+ struct tc6387xb_platform_data *pdata = platform_get_drvdata(dev);
+
+ if (pdata && pdata->resume)
+ pdata->resume(dev);
+
+ return 0;
+}
+#else
+#define tc6387xb_suspend NULL
+#define tc6387xb_resume NULL
+#endif
+
+/*--------------------------------------------------------------------------*/
+
+static int tc6387xb_mmc_enable(struct platform_device *mmc)
+{
+ struct platform_device *dev = to_platform_device(mmc->dev.parent);
+ struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data;
+
+ if (tc6387xb->enable_clk32k)
+ tc6387xb->enable_clk32k(dev);
+
+ return 0;
+}
+
+static int tc6387xb_mmc_disable(struct platform_device *mmc)
+{
+ struct platform_device *dev = to_platform_device(mmc->dev.parent);
+ struct tc6387xb_platform_data *tc6387xb = dev->dev.platform_data;
+
+ if (tc6387xb->disable_clk32k)
+ tc6387xb->disable_clk32k(dev);
+
+ return 0;
+}
+
+/*--------------------------------------------------------------------------*/
+
+static struct resource tc6387xb_mmc_resources[] = {
+ {
+ .start = 0x800,
+ .end = 0x9ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0x200,
+ .end = 0x2ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct mfd_cell tc6387xb_cells[] = {
+ [TC6387XB_CELL_MMC] = {
+ .name = "tmio-mmc",
+ .enable = tc6387xb_mmc_enable,
+ .disable = tc6387xb_mmc_disable,
+ .num_resources = ARRAY_SIZE(tc6387xb_mmc_resources),
+ .resources = tc6387xb_mmc_resources,
+ },
+};
+
+static int tc6387xb_probe(struct platform_device *dev)
+{
+ struct tc6387xb_platform_data *data = platform_get_drvdata(dev);
+ struct resource *iomem;
+ int irq, ret;
+
+ iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!iomem) {
+ ret = -EINVAL;
+ goto err_resource;
+ }
+
+ ret = platform_get_irq(dev, 0);
+ if (ret >= 0)
+ irq = ret;
+ else
+ goto err_resource;
+
+ if (data && data->enable)
+ data->enable(dev);
+
+ printk(KERN_INFO "Toshiba tc6387xb initialised\n");
+
+ tc6387xb_cells[TC6387XB_CELL_MMC].platform_data =
+ &tc6387xb_cells[TC6387XB_CELL_MMC];
+ tc6387xb_cells[TC6387XB_CELL_MMC].data_size =
+ sizeof(tc6387xb_cells[TC6387XB_CELL_MMC]);
+
+ ret = mfd_add_devices(&dev->dev, dev->id, tc6387xb_cells,
+ ARRAY_SIZE(tc6387xb_cells), iomem, irq);
+
+ if (!ret)
+ return 0;
+
+err_resource:
+ return ret;
+}
+
+static int tc6387xb_remove(struct platform_device *dev)
+{
+ struct tc6387xb_platform_data *data = platform_get_drvdata(dev);
+
+ if (data && data->disable)
+ data->disable(dev);
+
+ /* FIXME - free the resources! */
+
+ return 0;
+}
+
+
+static struct platform_driver tc6387xb_platform_driver = {
+ .driver = {
+ .name = "tc6387xb",
+ },
+ .probe = tc6387xb_probe,
+ .remove = tc6387xb_remove,
+ .suspend = tc6387xb_suspend,
+ .resume = tc6387xb_resume,
+};
+
+
+static int __init tc6387xb_init(void)
+{
+ return platform_driver_register(&tc6387xb_platform_driver);
+}
+
+static void __exit tc6387xb_exit(void)
+{
+ platform_driver_unregister(&tc6387xb_platform_driver);
+}
+
+module_init(tc6387xb_init);
+module_exit(tc6387xb_exit);
+
+MODULE_DESCRIPTION("Toshiba TC6387XB core driver");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Ian Molton");
+MODULE_ALIAS("platform:tc6387xb");
diff --git a/drivers/mfd/tc6393xb.c b/drivers/mfd/tc6393xb.c
index f4fd797c159..e4c1c788b5f 100644
--- a/drivers/mfd/tc6393xb.c
+++ b/drivers/mfd/tc6393xb.c
@@ -19,8 +19,8 @@
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
-#include <linux/fb.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tmio.h>
#include <linux/mfd/tc6393xb.h>
@@ -112,6 +112,7 @@ struct tc6393xb {
enum {
TC6393XB_CELL_NAND,
+ TC6393XB_CELL_MMC,
};
/*--------------------------------------------------------------------------*/
@@ -126,7 +127,7 @@ static int tc6393xb_nand_enable(struct platform_device *nand)
/* SMD buffer on */
dev_dbg(&dev->dev, "SMD buffer on\n");
- iowrite8(0xff, tc6393xb->scr + SCR_GPI_BCR(1));
+ tmio_iowrite8(0xff, tc6393xb->scr + SCR_GPI_BCR(1));
spin_unlock_irqrestore(&tc6393xb->lock, flags);
@@ -135,25 +136,40 @@ static int tc6393xb_nand_enable(struct platform_device *nand)
static struct resource __devinitdata tc6393xb_nand_resources[] = {
{
- .name = TMIO_NAND_CONFIG,
- .start = 0x0100,
- .end = 0x01ff,
+ .start = 0x1000,
+ .end = 0x1007,
.flags = IORESOURCE_MEM,
},
{
- .name = TMIO_NAND_CONTROL,
- .start = 0x1000,
- .end = 0x1007,
+ .start = 0x0100,
+ .end = 0x01ff,
.flags = IORESOURCE_MEM,
},
{
- .name = TMIO_NAND_IRQ,
.start = IRQ_TC6393_NAND,
.end = IRQ_TC6393_NAND,
.flags = IORESOURCE_IRQ,
},
};
+static struct resource __devinitdata tc6393xb_mmc_resources[] = {
+ {
+ .start = 0x800,
+ .end = 0x9ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0x200,
+ .end = 0x2ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_TC6393_MMC,
+ .end = IRQ_TC6393_MMC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
static struct mfd_cell __devinitdata tc6393xb_cells[] = {
[TC6393XB_CELL_NAND] = {
.name = "tmio-nand",
@@ -161,6 +177,11 @@ static struct mfd_cell __devinitdata tc6393xb_cells[] = {
.num_resources = ARRAY_SIZE(tc6393xb_nand_resources),
.resources = tc6393xb_nand_resources,
},
+ [TC6393XB_CELL_MMC] = {
+ .name = "tmio-mmc",
+ .num_resources = ARRAY_SIZE(tc6393xb_mmc_resources),
+ .resources = tc6393xb_mmc_resources,
+ },
};
/*--------------------------------------------------------------------------*/
@@ -171,7 +192,7 @@ static int tc6393xb_gpio_get(struct gpio_chip *chip,
struct tc6393xb *tc6393xb = container_of(chip, struct tc6393xb, gpio);
/* XXX: does dsr also represent inputs? */
- return ioread8(tc6393xb->scr + SCR_GPO_DSR(offset / 8))
+ return tmio_ioread8(tc6393xb->scr + SCR_GPO_DSR(offset / 8))
& TC_GPIO_BIT(offset);
}
@@ -181,13 +202,13 @@ static void __tc6393xb_gpio_set(struct gpio_chip *chip,
struct tc6393xb *tc6393xb = container_of(chip, struct tc6393xb, gpio);
u8 dsr;
- dsr = ioread8(tc6393xb->scr + SCR_GPO_DSR(offset / 8));
+ dsr = tmio_ioread8(tc6393xb->scr + SCR_GPO_DSR(offset / 8));
if (value)
dsr |= TC_GPIO_BIT(offset);
else
dsr &= ~TC_GPIO_BIT(offset);
- iowrite8(dsr, tc6393xb->scr + SCR_GPO_DSR(offset / 8));
+ tmio_iowrite8(dsr, tc6393xb->scr + SCR_GPO_DSR(offset / 8));
}
static void tc6393xb_gpio_set(struct gpio_chip *chip,
@@ -212,9 +233,9 @@ static int tc6393xb_gpio_direction_input(struct gpio_chip *chip,
spin_lock_irqsave(&tc6393xb->lock, flags);
- doecr = ioread8(tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
+ doecr = tmio_ioread8(tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
doecr &= ~TC_GPIO_BIT(offset);
- iowrite8(doecr, tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
+ tmio_iowrite8(doecr, tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
spin_unlock_irqrestore(&tc6393xb->lock, flags);
@@ -232,9 +253,9 @@ static int tc6393xb_gpio_direction_output(struct gpio_chip *chip,
__tc6393xb_gpio_set(chip, offset, value);
- doecr = ioread8(tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
+ doecr = tmio_ioread8(tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
doecr |= TC_GPIO_BIT(offset);
- iowrite8(doecr, tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
+ tmio_iowrite8(doecr, tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
spin_unlock_irqrestore(&tc6393xb->lock, flags);
@@ -265,8 +286,8 @@ tc6393xb_irq(unsigned int irq, struct irq_desc *desc)
irq_base = tc6393xb->irq_base;
- while ((isr = ioread8(tc6393xb->scr + SCR_ISR) &
- ~ioread8(tc6393xb->scr + SCR_IMR)))
+ while ((isr = tmio_ioread8(tc6393xb->scr + SCR_ISR) &
+ ~tmio_ioread8(tc6393xb->scr + SCR_IMR)))
for (i = 0; i < TC6393XB_NR_IRQS; i++) {
if (isr & (1 << i))
generic_handle_irq(irq_base + i);
@@ -284,9 +305,9 @@ static void tc6393xb_irq_mask(unsigned int irq)
u8 imr;
spin_lock_irqsave(&tc6393xb->lock, flags);
- imr = ioread8(tc6393xb->scr + SCR_IMR);
+ imr = tmio_ioread8(tc6393xb->scr + SCR_IMR);
imr |= 1 << (irq - tc6393xb->irq_base);
- iowrite8(imr, tc6393xb->scr + SCR_IMR);
+ tmio_iowrite8(imr, tc6393xb->scr + SCR_IMR);
spin_unlock_irqrestore(&tc6393xb->lock, flags);
}
@@ -297,9 +318,9 @@ static void tc6393xb_irq_unmask(unsigned int irq)
u8 imr;
spin_lock_irqsave(&tc6393xb->lock, flags);
- imr = ioread8(tc6393xb->scr + SCR_IMR);
+ imr = tmio_ioread8(tc6393xb->scr + SCR_IMR);
imr &= ~(1 << (irq - tc6393xb->irq_base));
- iowrite8(imr, tc6393xb->scr + SCR_IMR);
+ tmio_iowrite8(imr, tc6393xb->scr + SCR_IMR);
spin_unlock_irqrestore(&tc6393xb->lock, flags);
}
@@ -380,9 +401,8 @@ static int __devinit tc6393xb_probe(struct platform_device *dev)
{
struct tc6393xb_platform_data *tcpd = dev->dev.platform_data;
struct tc6393xb *tc6393xb;
- struct resource *iomem;
- struct resource *rscr;
- int retval, temp;
+ struct resource *iomem, *rscr;
+ int ret, temp;
int i;
iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
@@ -391,20 +411,26 @@ static int __devinit tc6393xb_probe(struct platform_device *dev)
tc6393xb = kzalloc(sizeof *tc6393xb, GFP_KERNEL);
if (!tc6393xb) {
- retval = -ENOMEM;
+ ret = -ENOMEM;
goto err_kzalloc;
}
spin_lock_init(&tc6393xb->lock);
platform_set_drvdata(dev, tc6393xb);
+
+ ret = platform_get_irq(dev, 0);
+ if (ret >= 0)
+ tc6393xb->irq = ret;
+ else
+ goto err_noirq;
+
tc6393xb->iomem = iomem;
- tc6393xb->irq = platform_get_irq(dev, 0);
tc6393xb->irq_base = tcpd->irq_base;
- tc6393xb->clk = clk_get(&dev->dev, "GPIO27_CLK" /* "CK3P6MI" */);
+ tc6393xb->clk = clk_get(&dev->dev, "CLK_CK3P6MI");
if (IS_ERR(tc6393xb->clk)) {
- retval = PTR_ERR(tc6393xb->clk);
+ ret = PTR_ERR(tc6393xb->clk);
goto err_clk_get;
}
@@ -414,71 +440,73 @@ static int __devinit tc6393xb_probe(struct platform_device *dev)
rscr->end = iomem->start + 0xff;
rscr->flags = IORESOURCE_MEM;
- retval = request_resource(iomem, rscr);
- if (retval)
+ ret = request_resource(iomem, rscr);
+ if (ret)
goto err_request_scr;
tc6393xb->scr = ioremap(rscr->start, rscr->end - rscr->start + 1);
if (!tc6393xb->scr) {
- retval = -ENOMEM;
+ ret = -ENOMEM;
goto err_ioremap;
}
- retval = clk_enable(tc6393xb->clk);
- if (retval)
+ ret = clk_enable(tc6393xb->clk);
+ if (ret)
goto err_clk_enable;
- retval = tcpd->enable(dev);
- if (retval)
+ ret = tcpd->enable(dev);
+ if (ret)
goto err_enable;
tc6393xb->suspend_state.fer = 0;
+
for (i = 0; i < 3; i++) {
tc6393xb->suspend_state.gpo_dsr[i] =
(tcpd->scr_gpo_dsr >> (8 * i)) & 0xff;
tc6393xb->suspend_state.gpo_doecr[i] =
(tcpd->scr_gpo_doecr >> (8 * i)) & 0xff;
}
- /*
- * It may be necessary to change this back to
- * platform-dependant code
- */
+
tc6393xb->suspend_state.ccr = SCR_CCR_UNK1 |
SCR_CCR_HCLK_48;
- retval = tc6393xb_hw_init(dev);
- if (retval)
+ ret = tc6393xb_hw_init(dev);
+ if (ret)
goto err_hw_init;
printk(KERN_INFO "Toshiba tc6393xb revision %d at 0x%08lx, irq %d\n",
- ioread8(tc6393xb->scr + SCR_REVID),
+ tmio_ioread8(tc6393xb->scr + SCR_REVID),
(unsigned long) iomem->start, tc6393xb->irq);
tc6393xb->gpio.base = -1;
if (tcpd->gpio_base >= 0) {
- retval = tc6393xb_register_gpio(tc6393xb, tcpd->gpio_base);
- if (retval)
+ ret = tc6393xb_register_gpio(tc6393xb, tcpd->gpio_base);
+ if (ret)
goto err_gpio_add;
}
- if (tc6393xb->irq)
- tc6393xb_attach_irq(dev);
+ tc6393xb_attach_irq(dev);
tc6393xb_cells[TC6393XB_CELL_NAND].driver_data = tcpd->nand_data;
tc6393xb_cells[TC6393XB_CELL_NAND].platform_data =
&tc6393xb_cells[TC6393XB_CELL_NAND];
tc6393xb_cells[TC6393XB_CELL_NAND].data_size =
sizeof(tc6393xb_cells[TC6393XB_CELL_NAND]);
+ tc6393xb_cells[TC6393XB_CELL_MMC].platform_data =
+ &tc6393xb_cells[TC6393XB_CELL_MMC];
+ tc6393xb_cells[TC6393XB_CELL_MMC].data_size =
+ sizeof(tc6393xb_cells[TC6393XB_CELL_MMC]);
+
- retval = mfd_add_devices(&dev->dev, dev->id,
+ ret = mfd_add_devices(&dev->dev, dev->id,
tc6393xb_cells, ARRAY_SIZE(tc6393xb_cells),
iomem, tcpd->irq_base);
- return 0;
+ if (!ret)
+ return 0;
- if (tc6393xb->irq)
- tc6393xb_detach_irq(dev);
+ tc6393xb_detach_irq(dev);
err_gpio_add:
if (tc6393xb->gpio.base != -1)
@@ -493,10 +521,11 @@ err_ioremap:
release_resource(&tc6393xb->rscr);
err_request_scr:
clk_put(tc6393xb->clk);
+err_noirq:
err_clk_get:
kfree(tc6393xb);
err_kzalloc:
- return retval;
+ return ret;
}
static int __devexit tc6393xb_remove(struct platform_device *dev)
@@ -506,9 +535,7 @@ static int __devexit tc6393xb_remove(struct platform_device *dev)
int ret;
mfd_remove_devices(&dev->dev);
-
- if (tc6393xb->irq)
- tc6393xb_detach_irq(dev);
+ tc6393xb_detach_irq(dev);
if (tc6393xb->gpio.base != -1) {
ret = gpiochip_remove(&tc6393xb->gpio);
@@ -519,17 +546,11 @@ static int __devexit tc6393xb_remove(struct platform_device *dev)
}
ret = tcpd->disable(dev);
-
clk_disable(tc6393xb->clk);
-
iounmap(tc6393xb->scr);
-
release_resource(&tc6393xb->rscr);
-
platform_set_drvdata(dev, NULL);
-
clk_put(tc6393xb->clk);
-
kfree(tc6393xb);
return ret;
@@ -540,8 +561,7 @@ static int tc6393xb_suspend(struct platform_device *dev, pm_message_t state)
{
struct tc6393xb_platform_data *tcpd = dev->dev.platform_data;
struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
- int i;
-
+ int i, ret;
tc6393xb->suspend_state.ccr = ioread16(tc6393xb->scr + SCR_CCR);
tc6393xb->suspend_state.fer = ioread8(tc6393xb->scr + SCR_FER);
@@ -554,14 +574,21 @@ static int tc6393xb_suspend(struct platform_device *dev, pm_message_t state)
tc6393xb->suspend_state.gpi_bcr[i] =
ioread8(tc6393xb->scr + SCR_GPI_BCR(i));
}
+ ret = tcpd->suspend(dev);
+ clk_disable(tc6393xb->clk);
- return tcpd->suspend(dev);
+ return ret;
}
static int tc6393xb_resume(struct platform_device *dev)
{
struct tc6393xb_platform_data *tcpd = dev->dev.platform_data;
- int ret = tcpd->resume(dev);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+ int ret;
+
+ clk_enable(tc6393xb->clk);
+
+ ret = tcpd->resume(dev);
if (ret)
return ret;
@@ -598,7 +625,7 @@ static void __exit tc6393xb_exit(void)
subsys_initcall(tc6393xb_init);
module_exit(tc6393xb_exit);
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Ian Molton, Dmitry Baryshkov and Dirk Opfer");
MODULE_DESCRIPTION("tc6393xb Toshiba Mobile IO Controller");
MODULE_ALIAS("platform:tc6393xb");
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index dc6f2579f85..ea8d7a3490d 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -174,3 +174,9 @@ config MMC_SDRICOH_CS
To compile this driver as a module, choose M here: the
module will be called sdricoh_cs.
+config MMC_TMIO
+ tristate "Toshiba Mobile IO Controller (TMIO) MMC/SD function support"
+ depends on MFD_TMIO
+ help
+ This provides support for the SD/MMC cell found in TC6393XB,
+ T7L66XB and also ipaq ASIC3
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index db52eebfb50..c794cc5ce44 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -21,4 +21,5 @@ obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
obj-$(CONFIG_MMC_SPI) += mmc_spi.o
obj-$(CONFIG_MMC_S3C) += s3cmci.o
obj-$(CONFIG_MMC_SDRICOH_CS) += sdricoh_cs.o
+obj-$(CONFIG_MMC_TMIO) += tmio_mmc.o
diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c
new file mode 100644
index 00000000000..95430b81ec1
--- /dev/null
+++ b/drivers/mmc/host/tmio_mmc.c
@@ -0,0 +1,691 @@
+/*
+ * linux/drivers/mmc/tmio_mmc.c
+ *
+ * Copyright (C) 2004 Ian Molton
+ * Copyright (C) 2007 Ian Molton
+ *
+ * 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.
+ *
+ * Driver for the MMC / SD / SDIO cell found in:
+ *
+ * TC6393XB TC6391XB TC6387XB T7L66XB
+ *
+ * This driver draws mainly on scattered spec sheets, Reverse engineering
+ * of the toshiba e800 SD driver and some parts of the 2.4 ASIC3 driver (4 bit
+ * support). (Further 4 bit support from a later datasheet).
+ *
+ * TODO:
+ * Investigate using a workqueue for PIO transfers
+ * Eliminate FIXMEs
+ * SDIO support
+ * Better Power management
+ * Handle MMC errors better
+ * double buffer support
+ *
+ */
+#include <linux/module.h>
+#include <linux/irq.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/mmc/host.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/tmio.h>
+
+#include "tmio_mmc.h"
+
+/*
+ * Fixme - documentation conflicts on what the clock values are for the
+ * various dividers.
+ * One document I have says that its a divisor of a 24MHz clock, another 33.
+ * This probably depends on HCLK for a given platform, so we may need to
+ * require HCLK be passed to us from the MFD core.
+ *
+ */
+
+static void tmio_mmc_set_clock(struct tmio_mmc_host *host, int new_clock)
+{
+ void __iomem *cnf = host->cnf;
+ void __iomem *ctl = host->ctl;
+ u32 clk = 0, clock;
+
+ if (new_clock) {
+ for (clock = 46875, clk = 0x100; new_clock >= (clock<<1); ) {
+ clock <<= 1;
+ clk >>= 1;
+ }
+ if (clk & 0x1)
+ clk = 0x20000;
+
+ clk >>= 2;
+ tmio_iowrite8((clk & 0x8000) ? 0 : 1, cnf + CNF_SD_CLK_MODE);
+ clk |= 0x100;
+ }
+
+ tmio_iowrite16(clk, ctl + CTL_SD_CARD_CLK_CTL);
+}
+
+static void tmio_mmc_clk_stop(struct tmio_mmc_host *host)
+{
+ void __iomem *ctl = host->ctl;
+
+ tmio_iowrite16(0x0000, ctl + CTL_CLK_AND_WAIT_CTL);
+ msleep(10);
+ tmio_iowrite16(tmio_ioread16(ctl + CTL_SD_CARD_CLK_CTL) & ~0x0100,
+ ctl + CTL_SD_CARD_CLK_CTL);
+ msleep(10);
+}
+
+static void tmio_mmc_clk_start(struct tmio_mmc_host *host)
+{
+ void __iomem *ctl = host->ctl;
+
+ tmio_iowrite16(tmio_ioread16(ctl + CTL_SD_CARD_CLK_CTL) | 0x0100,
+ ctl + CTL_SD_CARD_CLK_CTL);
+ msleep(10);
+ tmio_iowrite16(0x0100, ctl + CTL_CLK_AND_WAIT_CTL);
+ msleep(10);
+}
+
+static void reset(struct tmio_mmc_host *host)
+{
+ void __iomem *ctl = host->ctl;
+
+ /* FIXME - should we set stop clock reg here */
+ tmio_iowrite16(0x0000, ctl + CTL_RESET_SD);
+ tmio_iowrite16(0x0000, ctl + CTL_RESET_SDIO);
+ msleep(10);
+ tmio_iowrite16(0x0001, ctl + CTL_RESET_SD);
+ tmio_iowrite16(0x0001, ctl + CTL_RESET_SDIO);
+ msleep(10);
+}
+
+static void
+tmio_mmc_finish_request(struct tmio_mmc_host *host)
+{
+ struct mmc_request *mrq = host->mrq;
+
+ host->mrq = NULL;
+ host->cmd = NULL;
+ host->data = NULL;
+
+ mmc_request_done(host->mmc, mrq);
+}
+
+/* These are the bitmasks the tmio chip requires to implement the MMC response
+ * types. Note that R1 and R6 are the same in this scheme. */
+#define APP_CMD 0x0040
+#define RESP_NONE 0x0300
+#define RESP_R1 0x0400
+#define RESP_R1B 0x0500
+#define RESP_R2 0x0600
+#define RESP_R3 0x0700
+#define DATA_PRESENT 0x0800
+#define TRANSFER_READ 0x1000
+#define TRANSFER_MULTI 0x2000
+#define SECURITY_CMD 0x4000
+
+static int
+tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command *cmd)
+{
+ void __iomem *ctl = host->ctl;
+ struct mmc_data *data = host->data;
+ int c = cmd->opcode;
+
+ /* Command 12 is handled by hardware */
+ if (cmd->opcode == 12 && !cmd->arg) {
+ tmio_iowrite16(0x001, ctl + CTL_STOP_INTERNAL_ACTION);
+ return 0;
+ }
+
+ switch (mmc_resp_type(cmd)) {
+ case MMC_RSP_NONE: c |= RESP_NONE; break;
+ case MMC_RSP_R1: c |= RESP_R1; break;
+ case MMC_RSP_R1B: c |= RESP_R1B; break;
+ case MMC_RSP_R2: c |= RESP_R2; break;
+ case MMC_RSP_R3: c |= RESP_R3; break;
+ default:
+ pr_debug("Unknown response type %d\n", mmc_resp_type(cmd));
+ return -EINVAL;
+ }
+
+ host->cmd = cmd;
+
+/* FIXME - this seems to be ok comented out but the spec suggest this bit should
+ * be set when issuing app commands.
+ * if(cmd->flags & MMC_FLAG_ACMD)
+ * c |= APP_CMD;
+ */
+ if (data) {
+ c |= DATA_PRESENT;
+ if (data->blocks > 1) {
+ tmio_iowrite16(0x100, ctl + CTL_STOP_INTERNAL_ACTION);
+ c |= TRANSFER_MULTI;
+ }
+ if (data->flags & MMC_DATA_READ)
+ c |= TRANSFER_READ;
+ }
+
+ enable_mmc_irqs(ctl, TMIO_MASK_CMD);
+
+ /* Fire off the command */
+ tmio_iowrite32(cmd->arg, ctl + CTL_ARG_REG);
+ tmio_iowrite16(c, ctl + CTL_SD_CMD);
+
+ return 0;
+}
+
+/* This chip always returns (at least?) as much data as you ask for.
+ * I'm unsure what happens if you ask for less than a block. This should be
+ * looked into to ensure that a funny length read doesnt hose the controller.
+ *
+ */
+static inline void tmio_mmc_pio_irq(struct tmio_mmc_host *host)
+{
+ void __iomem *ctl = host->ctl;
+ struct mmc_data *data = host->data;
+ unsigned short *buf;
+ unsigned int count;
+ unsigned long flags;
+
+ if (!data) {
+ pr_debug("Spurious PIO IRQ\n");
+ return;
+ }
+
+ buf = (unsigned short *)(tmio_mmc_kmap_atomic(host, &flags) +
+ host->sg_off);
+
+ count = host->sg_ptr->length - host->sg_off;
+ if (count > data->blksz)
+ count = data->blksz;
+
+ pr_debug("count: %08x offset: %08x flags %08x\n",
+ count, host->sg_off, data->flags);
+
+ /* Transfer the data */
+ if (data->flags & MMC_DATA_READ)
+ tmio_ioread16_rep(ctl + CTL_SD_DATA_PORT, buf, count >> 1);
+ else
+ tmio_iowrite16_rep(ctl + CTL_SD_DATA_PORT, buf, count >> 1);
+
+ host->sg_off += count;
+
+ tmio_mmc_kunmap_atomic(host, &flags);
+
+ if (host->sg_off == host->sg_ptr->length)
+ tmio_mmc_next_sg(host);
+
+ return;
+}
+
+static inline void tmio_mmc_data_irq(struct tmio_mmc_host *host)
+{
+ void __iomem *ctl = host->ctl;
+ struct mmc_data *data = host->data;
+ struct mmc_command *stop = data->stop;
+
+ host->data = NULL;
+
+ if (!data) {
+ pr_debug("Spurious data end IRQ\n");
+ return;
+ }
+
+ /* FIXME - return correct transfer count on errors */
+ if (!data->error)
+ data->bytes_xfered = data->blocks * data->blksz;
+ else
+ data->bytes_xfered = 0;
+
+ pr_debug("Completed data request\n");
+
+ /*FIXME - other drivers allow an optional stop command of any given type
+ * which we dont do, as the chip can auto generate them.
+ * Perhaps we can be smarter about when to use auto CMD12 and
+ * only issue the auto request when we know this is the desired
+ * stop command, allowing fallback to the stop command the
+ * upper layers expect. For now, we do what works.
+ */
+
+ if (data->flags & MMC_DATA_READ)
+ disable_mmc_irqs(ctl, TMIO_MASK_READOP);
+ else
+ disable_mmc_irqs(ctl, TMIO_MASK_WRITEOP);
+
+ if (stop) {
+ if (stop->opcode == 12 && !stop->arg)
+ tmio_iowrite16(0x000, ctl + CTL_STOP_INTERNAL_ACTION);
+ else
+ BUG();
+ }
+
+ tmio_mmc_finish_request(host);
+}
+
+static inline void tmio_mmc_cmd_irq(struct tmio_mmc_host *host,
+ unsigned int stat)
+{
+ void __iomem *ctl = host->ctl, *addr;
+ struct mmc_command *cmd = host->cmd;
+ int i;
+
+ if (!host->cmd) {
+ pr_debug("Spurious CMD irq\n");
+ return;
+ }
+
+ host->cmd = NULL;
+
+ /* This controller is sicker than the PXA one. Not only do we need to
+ * drop the top 8 bits of the first response word, we also need to
+ * modify the order of the response for short response command types.
+ */
+
+ for (i = 3, addr = ctl + CTL_RESPONSE ; i >= 0 ; i--, addr += 4)
+ cmd->resp[i] = tmio_ioread32(addr);
+
+ if (cmd->flags & MMC_RSP_136) {
+ cmd->resp[0] = (cmd->resp[0] << 8) | (cmd->resp[1] >> 24);
+ cmd->resp[1] = (cmd->resp[1] << 8) | (cmd->resp[2] >> 24);
+ cmd->resp[2] = (cmd->resp[2] << 8) | (cmd->resp[3] >> 24);
+ cmd->resp[3] <<= 8;
+ } else if (cmd->flags & MMC_RSP_R3) {
+ cmd->resp[0] = cmd->resp[3];
+ }
+
+ if (stat & TMIO_STAT_CMDTIMEOUT)
+ cmd->error = -ETIMEDOUT;
+ else if (stat & TMIO_STAT_CRCFAIL && cmd->flags & MMC_RSP_CRC)
+ cmd->error = -EILSEQ;
+
+ /* If there is data to handle we enable data IRQs here, and
+ * we will ultimatley finish the request in the data_end handler.
+ * If theres no data or we encountered an error, finish now.
+ */
+ if (host->data && !cmd->error) {
+ if (host->data->flags & MMC_DATA_READ)
+ enable_mmc_irqs(ctl, TMIO_MASK_READOP);
+ else
+ enable_mmc_irqs(ctl, TMIO_MASK_WRITEOP);
+ } else {
+ tmio_mmc_finish_request(host);
+ }
+
+ return;
+}
+
+
+static irqreturn_t tmio_mmc_irq(int irq, void *devid)
+{
+ struct tmio_mmc_host *host = devid;
+ void __iomem *ctl = host->ctl;
+ unsigned int ireg, irq_mask, status;
+
+ pr_debug("MMC IRQ begin\n");
+
+ status = tmio_ioread32(ctl + CTL_STATUS);
+ irq_mask = tmio_ioread32(ctl + CTL_IRQ_MASK);
+ ireg = status & TMIO_MASK_IRQ & ~irq_mask;
+
+ pr_debug_status(status);
+ pr_debug_status(ireg);
+
+ if (!ireg) {
+ disable_mmc_irqs(ctl, status & ~irq_mask);
+
+ pr_debug("tmio_mmc: Spurious irq, disabling! "
+ "0x%08x 0x%08x 0x%08x\n", status, irq_mask, ireg);
+ pr_debug_status(status);
+
+ goto out;
+ }
+
+ while (ireg) {
+ /* Card insert / remove attempts */
+ if (ireg & (TMIO_STAT_CARD_INSERT | TMIO_STAT_CARD_REMOVE)) {
+ ack_mmc_irqs(ctl, TMIO_STAT_CARD_INSERT |
+ TMIO_STAT_CARD_REMOVE);
+ mmc_detect_change(host->mmc, 0);
+ }
+
+ /* CRC and other errors */
+/* if (ireg & TMIO_STAT_ERR_IRQ)
+ * handled |= tmio_error_irq(host, irq, stat);
+ */
+
+ /* Command completion */
+ if (ireg & TMIO_MASK_CMD) {
+ ack_mmc_irqs(ctl, TMIO_MASK_CMD);
+ tmio_mmc_cmd_irq(host, status);
+ }
+
+ /* Data transfer */
+ if (ireg & (TMIO_STAT_RXRDY | TMIO_STAT_TXRQ)) {
+ ack_mmc_irqs(ctl, TMIO_STAT_RXRDY | TMIO_STAT_TXRQ);
+ tmio_mmc_pio_irq(host);
+ }
+
+ /* Data transfer completion */
+ if (ireg & TMIO_STAT_DATAEND) {
+ ack_mmc_irqs(ctl, TMIO_STAT_DATAEND);
+ tmio_mmc_data_irq(host);
+ }
+
+ /* Check status - keep going until we've handled it all */
+ status = tmio_ioread32(ctl + CTL_STATUS);
+ irq_mask = tmio_ioread32(ctl + CTL_IRQ_MASK);
+ ireg = status & TMIO_MASK_IRQ & ~irq_mask;
+
+ pr_debug("Status at end of loop: %08x\n", status);
+ pr_debug_status(status);
+ }
+ pr_debug("MMC IRQ end\n");
+
+out:
+ return IRQ_HANDLED;
+}
+
+static int tmio_mmc_start_data(struct tmio_mmc_host *host,
+ struct mmc_data *data)
+{
+ void __iomem *ctl = host->ctl;
+
+ pr_debug("setup data transfer: blocksize %08x nr_blocks %d\n",
+ data->blksz, data->blocks);
+
+ /* Hardware cannot perform 1 and 2 byte requests in 4 bit mode */
+ if (data->blksz < 4 && host->mmc->ios.bus_width == MMC_BUS_WIDTH_4) {
+ printk(KERN_ERR "%s: %d byte block unsupported in 4 bit mode\n",
+ mmc_hostname(host->mmc), data->blksz);
+ return -EINVAL;
+ }
+
+ tmio_mmc_init_sg(host, data);
+ host->data = data;
+
+ /* Set transfer length / blocksize */
+ tmio_iowrite16(data->blksz, ctl + CTL_SD_XFER_LEN);
+ tmio_iowrite16(data->blocks, ctl + CTL_XFER_BLK_COUNT);
+
+ return 0;
+}
+
+/* Process requests from the MMC layer */
+static void tmio_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ int ret;
+
+ if (host->mrq)
+ pr_debug("request not null\n");
+
+ host->mrq = mrq;
+
+ if (mrq->data) {
+ ret = tmio_mmc_start_data(host, mrq->data);
+ if (ret)
+ goto fail;
+ }
+
+ ret = tmio_mmc_start_command(host, mrq->cmd);
+
+ if (!ret)
+ return;
+
+fail:
+ mrq->cmd->error = ret;
+ mmc_request_done(mmc, mrq);
+}
+
+/* Set MMC clock / power.
+ * Note: This controller uses a simple divider scheme therefore it cannot
+ * run a MMC card at full speed (20MHz). The max clock is 24MHz on SD, but as
+ * MMC wont run that fast, it has to be clocked at 12MHz which is the next
+ * slowest setting.
+ */
+static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ void __iomem *cnf = host->cnf;
+ void __iomem *ctl = host->ctl;
+
+ if (ios->clock)
+ tmio_mmc_set_clock(host, ios->clock);
+
+ /* Power sequence - OFF -> ON -> UP */
+ switch (ios->power_mode) {
+ case MMC_POWER_OFF: /* power down SD bus */
+ tmio_iowrite8(0x00, cnf + CNF_PWR_CTL_2);
+ tmio_mmc_clk_stop(host);
+ break;
+ case MMC_POWER_ON: /* power up SD bus */
+
+ tmio_iowrite8(0x02, cnf + CNF_PWR_CTL_2);
+ break;
+ case MMC_POWER_UP: /* start bus clock */
+ tmio_mmc_clk_start(host);
+ break;
+ }
+
+ switch (ios->bus_width) {
+ case MMC_BUS_WIDTH_1:
+ tmio_iowrite16(0x80e0, ctl + CTL_SD_MEM_CARD_OPT);
+ break;
+ case MMC_BUS_WIDTH_4:
+ tmio_iowrite16(0x00e0, ctl + CTL_SD_MEM_CARD_OPT);
+ break;
+ }
+
+ /* Let things settle. delay taken from winCE driver */
+ udelay(140);
+}
+
+static int tmio_mmc_get_ro(struct mmc_host *mmc)
+{
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ void __iomem *ctl = host->ctl;
+
+ return (tmio_ioread16(ctl + CTL_STATUS) & TMIO_STAT_WRPROTECT) ? 0 : 1;
+}
+
+static struct mmc_host_ops tmio_mmc_ops = {
+ .request = tmio_mmc_request,
+ .set_ios = tmio_mmc_set_ios,
+ .get_ro = tmio_mmc_get_ro,
+};
+
+#ifdef CONFIG_PM
+static int tmio_mmc_suspend(struct platform_device *dev, pm_message_t state)
+{
+ struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data;
+ struct mmc_host *mmc = platform_get_drvdata(dev);
+ int ret;
+
+ ret = mmc_suspend_host(mmc, state);
+
+ /* Tell MFD core it can disable us now.*/
+ if (!ret && cell->disable)
+ cell->disable(dev);
+
+ return ret;
+}
+
+static int tmio_mmc_resume(struct platform_device *dev)
+{
+ struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data;
+ struct mmc_host *mmc = platform_get_drvdata(dev);
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ void __iomem *cnf = host->cnf;
+ int ret = 0;
+
+ /* Enable the MMC/SD Control registers */
+ tmio_iowrite16(SDCREN, cnf + CNF_CMD);
+ tmio_iowrite32(dev->resource[0].start & 0xfffe, cnf + CNF_CTL_BASE);
+
+ /* Tell the MFD core we are ready to be enabled */
+ if (cell->enable) {
+ ret = cell->enable(dev);
+ if (ret)
+ goto out;
+ }
+
+ mmc_resume_host(mmc);
+
+out:
+ return ret;
+}
+#else
+#define tmio_mmc_suspend NULL
+#define tmio_mmc_resume NULL
+#endif
+
+static int __devinit tmio_mmc_probe(struct platform_device *dev)
+{
+ struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data;
+ struct resource *res_ctl, *res_cnf;
+ struct tmio_mmc_host *host;
+ struct mmc_host *mmc;
+ int ret = -ENOMEM;
+
+ if (dev->num_resources != 3)
+ goto out;
+
+ res_ctl = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ res_cnf = platform_get_resource(dev, IORESOURCE_MEM, 1);
+ if (!res_ctl || !res_cnf) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ mmc = mmc_alloc_host(sizeof(struct tmio_mmc_host), &dev->dev);
+ if (!mmc)
+ goto out;
+
+ host = mmc_priv(mmc);
+ host->mmc = mmc;
+ platform_set_drvdata(dev, mmc);
+
+ host->ctl = ioremap(res_ctl->start, res_ctl->end - res_ctl->start);
+ if (!host->ctl)
+ goto host_free;
+
+ host->cnf = ioremap(res_cnf->start, res_cnf->end - res_cnf->start);
+ if (!host->cnf)
+ goto unmap_ctl;
+
+ mmc->ops = &tmio_mmc_ops;
+ mmc->caps = MMC_CAP_4_BIT_DATA;
+ mmc->f_min = 46875; /* 24000000 / 512 */
+ mmc->f_max = 24000000;
+ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+
+ /* Enable the MMC/SD Control registers */
+ tmio_iowrite16(SDCREN, host->cnf + CNF_CMD);
+ tmio_iowrite32(dev->resource[0].start & 0xfffe,
+ host->cnf + CNF_CTL_BASE);
+
+ /* Tell the MFD core we are ready to be enabled */
+ if (cell->enable) {
+ ret = cell->enable(dev);
+ if (ret)
+ goto unmap_cnf;
+ }
+
+ /* Disable SD power during suspend */
+ tmio_iowrite8(0x01, host->cnf + CNF_PWR_CTL_3);
+
+ /* The below is required but why? FIXME */
+ tmio_iowrite8(0x1f, host->cnf + CNF_STOP_CLK_CTL);
+
+ /* Power down SD bus*/
+ tmio_iowrite8(0x0, host->cnf + CNF_PWR_CTL_2);
+
+ tmio_mmc_clk_stop(host);
+ reset(host);
+
+ ret = platform_get_irq(dev, 0);
+ if (ret >= 0)
+ host->irq = ret;
+ else
+ goto unmap_cnf;
+
+ disable_mmc_irqs(host->ctl, TMIO_MASK_ALL);
+
+ ret = request_irq(host->irq, tmio_mmc_irq, IRQF_DISABLED, "tmio-mmc",
+ host);
+ if (ret)
+ goto unmap_cnf;
+
+ set_irq_type(host->irq, IRQ_TYPE_EDGE_FALLING);
+
+ mmc_add_host(mmc);
+
+ printk(KERN_INFO "%s at 0x%08lx irq %d\n", mmc_hostname(host->mmc),
+ (unsigned long)host->ctl, host->irq);
+
+ /* Unmask the IRQs we want to know about */
+ enable_mmc_irqs(host->ctl, TMIO_MASK_IRQ);
+
+ return 0;
+
+unmap_cnf:
+ iounmap(host->cnf);
+unmap_ctl:
+ iounmap(host->ctl);
+host_free:
+ mmc_free_host(mmc);
+out:
+ return ret;
+}
+
+static int __devexit tmio_mmc_remove(struct platform_device *dev)
+{
+ struct mmc_host *mmc = platform_get_drvdata(dev);
+
+ platform_set_drvdata(dev, NULL);
+
+ if (mmc) {
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ mmc_remove_host(mmc);
+ mmc_free_host(mmc);
+ free_irq(host->irq, host);
+ iounmap(host->ctl);
+ iounmap(host->cnf);
+ }
+
+ return 0;
+}
+
+/* ------------------- device registration ----------------------- */
+
+static struct platform_driver tmio_mmc_driver = {
+ .driver = {
+ .name = "tmio-mmc",
+ .owner = THIS_MODULE,
+ },
+ .probe = tmio_mmc_probe,
+ .remove = __devexit_p(tmio_mmc_remove),
+ .suspend = tmio_mmc_suspend,
+ .resume = tmio_mmc_resume,
+};
+
+
+static int __init tmio_mmc_init(void)
+{
+ return platform_driver_register(&tmio_mmc_driver);
+}
+
+static void __exit tmio_mmc_exit(void)
+{
+ platform_driver_unregister(&tmio_mmc_driver);
+}
+
+module_init(tmio_mmc_init);
+module_exit(tmio_mmc_exit);
+
+MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver");
+MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:tmio-mmc");
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
new file mode 100644
index 00000000000..9e647a06054
--- /dev/null
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -0,0 +1,194 @@
+/* Definitons for use with the tmio_mmc.c
+ *
+ * (c) 2004 Ian Molton <spyro@f2s.com>
+ * (c) 2007 Ian Molton <spyro@f2s.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.
+ *
+ */
+#define CNF_CMD 0x04
+#define CNF_CTL_BASE 0x10
+#define CNF_INT_PIN 0x3d
+#define CNF_STOP_CLK_CTL 0x40
+#define CNF_GCLK_CTL 0x41
+#define CNF_SD_CLK_MODE 0x42
+#define CNF_PIN_STATUS 0x44
+#define CNF_PWR_CTL_1 0x48
+#define CNF_PWR_CTL_2 0x49
+#define CNF_PWR_CTL_3 0x4a
+#define CNF_CARD_DETECT_MODE 0x4c
+#define CNF_SD_SLOT 0x50
+#define CNF_EXT_GCLK_CTL_1 0xf0
+#define CNF_EXT_GCLK_CTL_2 0xf1
+#define CNF_EXT_GCLK_CTL_3 0xf9
+#define CNF_SD_LED_EN_1 0xfa
+#define CNF_SD_LED_EN_2 0xfe
+
+#define SDCREN 0x2 /* Enable access to MMC CTL regs. (flag in COMMAND_REG)*/
+
+#define CTL_SD_CMD 0x00
+#define CTL_ARG_REG 0x04
+#define CTL_STOP_INTERNAL_ACTION 0x08
+#define CTL_XFER_BLK_COUNT 0xa
+#define CTL_RESPONSE 0x0c
+#define CTL_STATUS 0x1c
+#define CTL_IRQ_MASK 0x20
+#define CTL_SD_CARD_CLK_CTL 0x24
+#define CTL_SD_XFER_LEN 0x26
+#define CTL_SD_MEM_CARD_OPT 0x28
+#define CTL_SD_ERROR_DETAIL_STATUS 0x2c
+#define CTL_SD_DATA_PORT 0x30
+#define CTL_TRANSACTION_CTL 0x34
+#define CTL_RESET_SD 0xe0
+#define CTL_SDIO_REGS 0x100
+#define CTL_CLK_AND_WAIT_CTL 0x138
+#define CTL_RESET_SDIO 0x1e0
+
+/* Definitions for values the CTRL_STATUS register can take. */
+#define TMIO_STAT_CMDRESPEND 0x00000001
+#define TMIO_STAT_DATAEND 0x00000004
+#define TMIO_STAT_CARD_REMOVE 0x00000008
+#define TMIO_STAT_CARD_INSERT 0x00000010
+#define TMIO_STAT_SIGSTATE 0x00000020
+#define TMIO_STAT_WRPROTECT 0x00000080
+#define TMIO_STAT_CARD_REMOVE_A 0x00000100
+#define TMIO_STAT_CARD_INSERT_A 0x00000200
+#define TMIO_STAT_SIGSTATE_A 0x00000400
+#define TMIO_STAT_CMD_IDX_ERR 0x00010000
+#define TMIO_STAT_CRCFAIL 0x00020000
+#define TMIO_STAT_STOPBIT_ERR 0x00040000
+#define TMIO_STAT_DATATIMEOUT 0x00080000
+#define TMIO_STAT_RXOVERFLOW 0x00100000
+#define TMIO_STAT_TXUNDERRUN 0x00200000
+#define TMIO_STAT_CMDTIMEOUT 0x00400000
+#define TMIO_STAT_RXRDY 0x01000000
+#define TMIO_STAT_TXRQ 0x02000000
+#define TMIO_STAT_ILL_FUNC 0x20000000
+#define TMIO_STAT_CMD_BUSY 0x40000000
+#define TMIO_STAT_ILL_ACCESS 0x80000000
+
+/* Define some IRQ masks */
+/* This is the mask used at reset by the chip */
+#define TMIO_MASK_ALL 0x837f031d
+#define TMIO_MASK_READOP (TMIO_STAT_RXRDY | TMIO_STAT_DATAEND | \
+ TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)
+#define TMIO_MASK_WRITEOP (TMIO_STAT_TXRQ | TMIO_STAT_DATAEND | \
+ TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)
+#define TMIO_MASK_CMD (TMIO_STAT_CMDRESPEND | TMIO_STAT_CMDTIMEOUT | \
+ TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT)
+#define TMIO_MASK_IRQ (TMIO_MASK_READOP | TMIO_MASK_WRITEOP | TMIO_MASK_CMD)
+
+#define enable_mmc_irqs(ctl, i) \
+ do { \
+ u32 mask;\
+ mask = tmio_ioread32((ctl) + CTL_IRQ_MASK); \
+ mask &= ~((i) & TMIO_MASK_IRQ); \
+ tmio_iowrite32(mask, (ctl) + CTL_IRQ_MASK); \
+ } while (0)
+
+#define disable_mmc_irqs(ctl, i) \
+ do { \
+ u32 mask;\
+ mask = tmio_ioread32((ctl) + CTL_IRQ_MASK); \
+ mask |= ((i) & TMIO_MASK_IRQ); \
+ tmio_iowrite32(mask, (ctl) + CTL_IRQ_MASK); \
+ } while (0)
+
+#define ack_mmc_irqs(ctl, i) \
+ do { \
+ u32 mask;\
+ mask = tmio_ioread32((ctl) + CTL_STATUS); \
+ mask &= ~((i) & TMIO_MASK_IRQ); \
+ tmio_iowrite32(mask, (ctl) + CTL_STATUS); \
+ } while (0)
+
+
+struct tmio_mmc_host {
+ void __iomem *cnf;
+ void __iomem *ctl;
+ struct mmc_command *cmd;
+ struct mmc_request *mrq;
+ struct mmc_data *data;
+ struct mmc_host *mmc;
+ int irq;
+
+ /* pio related stuff */
+ struct scatterlist *sg_ptr;
+ unsigned int sg_len;
+ unsigned int sg_off;
+};
+
+#include <linux/scatterlist.h>
+#include <linux/blkdev.h>
+
+static inline void tmio_mmc_init_sg(struct tmio_mmc_host *host,
+ struct mmc_data *data)
+{
+ host->sg_len = data->sg_len;
+ host->sg_ptr = data->sg;
+ host->sg_off = 0;
+}
+
+static inline int tmio_mmc_next_sg(struct tmio_mmc_host *host)
+{
+ host->sg_ptr = sg_next(host->sg_ptr);
+ host->sg_off = 0;
+ return --host->sg_len;
+}
+
+static inline char *tmio_mmc_kmap_atomic(struct tmio_mmc_host *host,
+ unsigned long *flags)
+{
+ struct scatterlist *sg = host->sg_ptr;
+
+ local_irq_save(*flags);
+ return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset;
+}
+
+static inline void tmio_mmc_kunmap_atomic(struct tmio_mmc_host *host,
+ unsigned long *flags)
+{
+ kunmap_atomic(sg_page(host->sg_ptr), KM_BIO_SRC_IRQ);
+ local_irq_restore(*flags);
+}
+
+#ifdef CONFIG_MMC_DEBUG
+
+#define STATUS_TO_TEXT(a) \
+ do { \
+ if (status & TMIO_STAT_##a) \
+ printf(#a); \
+ } while (0)
+
+void debug_status(u32 status)
+{
+ printk(KERN_DEBUG "status: %08x = ", status);
+ STATUS_TO_TEXT(CARD_REMOVE);
+ STATUS_TO_TEXT(CARD_INSERT);
+ STATUS_TO_TEXT(SIGSTATE);
+ STATUS_TO_TEXT(WRPROTECT);
+ STATUS_TO_TEXT(CARD_REMOVE_A);
+ STATUS_TO_TEXT(CARD_INSERT_A);
+ STATUS_TO_TEXT(SIGSTATE_A);
+ STATUS_TO_TEXT(CMD_IDX_ERR);
+ STATUS_TO_TEXT(STOPBIT_ERR);
+ STATUS_TO_TEXT(ILL_FUNC);
+ STATUS_TO_TEXT(CMD_BUSY);
+ STATUS_TO_TEXT(CMDRESPEND);
+ STATUS_TO_TEXT(DATAEND);
+ STATUS_TO_TEXT(CRCFAIL);
+ STATUS_TO_TEXT(DATATIMEOUT);
+ STATUS_TO_TEXT(CMDTIMEOUT);
+ STATUS_TO_TEXT(RXOVERFLOW);
+ STATUS_TO_TEXT(TXUNDERRUN);
+ STATUS_TO_TEXT(RXRDY);
+ STATUS_TO_TEXT(TXRQ);
+ STATUS_TO_TEXT(ILL_ACCESS);
+ printk("\n");
+}
+
+#else
+#define pr_debug_status(s) do { } while (0)
+#endif
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 02f9cc30d77..41f361c49b3 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -351,6 +351,13 @@ config MTD_NAND_PASEMI
Enables support for NAND Flash interface on PA Semi PWRficient
based boards
+config MTD_NAND_TMIO
+ tristate "NAND Flash device on Toshiba Mobile IO Controller"
+ depends on MTD_NAND && MFD_TMIO
+ help
+ Support for NAND flash connected to a Toshiba Mobile IO
+ Controller in some PDAs, including the Sharp SL6000x.
+
config MTD_NAND_NANDSIM
tristate "Support for NAND Flash Simulator"
depends on MTD_PARTITIONS
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index d772581de57..b786c5da82d 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -27,6 +27,7 @@ obj-$(CONFIG_MTD_NAND_ATMEL) += atmel_nand.o
obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) += excite_nandflash.o
obj-$(CONFIG_MTD_NAND_PXA3xx) += pxa3xx_nand.o
+obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o
obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o
obj-$(CONFIG_MTD_ALAUDA) += alauda.o
obj-$(CONFIG_MTD_NAND_PASEMI) += pasemi_nand.o
diff --git a/drivers/mtd/nand/tmio_nand.c b/drivers/mtd/nand/tmio_nand.c
new file mode 100644
index 00000000000..cbab654b03c
--- /dev/null
+++ b/drivers/mtd/nand/tmio_nand.c
@@ -0,0 +1,556 @@
+/*
+ * Toshiba TMIO NAND flash controller driver
+ *
+ * Slightly murky pre-git history of the driver:
+ *
+ * Copyright (c) Ian Molton 2004, 2005, 2008
+ * Original work, independant of sharps code. Included hardware ECC support.
+ * Hard ECC did not work for writes in the early revisions.
+ * Copyright (c) Dirk Opfer 2005.
+ * Modifications developed from sharps code but
+ * NOT containing any, ported onto Ians base.
+ * Copyright (c) Chris Humbert 2005
+ * Copyright (c) Dmitry Baryshkov 2008
+ * Minor fixes
+ *
+ * Parts copyright Sebastian Carlier
+ *
+ * This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/tmio.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/nand.h>
+#include <linux/mtd/nand_ecc.h>
+#include <linux/mtd/partitions.h>
+
+/*--------------------------------------------------------------------------*/
+
+/*
+ * NAND Flash Host Controller Configuration Register
+ */
+#define CCR_COMMAND 0x04 /* w Command */
+#define CCR_BASE 0x10 /* l NAND Flash Control Reg Base Addr */
+#define CCR_INTP 0x3d /* b Interrupt Pin */
+#define CCR_INTE 0x48 /* b Interrupt Enable */
+#define CCR_EC 0x4a /* b Event Control */
+#define CCR_ICC 0x4c /* b Internal Clock Control */
+#define CCR_ECCC 0x5b /* b ECC Control */
+#define CCR_NFTC 0x60 /* b NAND Flash Transaction Control */
+#define CCR_NFM 0x61 /* b NAND Flash Monitor */
+#define CCR_NFPSC 0x62 /* b NAND Flash Power Supply Control */
+#define CCR_NFDC 0x63 /* b NAND Flash Detect Control */
+
+/*
+ * NAND Flash Control Register
+ */
+#define FCR_DATA 0x00 /* bwl Data Register */
+#define FCR_MODE 0x04 /* b Mode Register */
+#define FCR_STATUS 0x05 /* b Status Register */
+#define FCR_ISR 0x06 /* b Interrupt Status Register */
+#define FCR_IMR 0x07 /* b Interrupt Mask Register */
+
+/* FCR_MODE Register Command List */
+#define FCR_MODE_DATA 0x94 /* Data Data_Mode */
+#define FCR_MODE_COMMAND 0x95 /* Data Command_Mode */
+#define FCR_MODE_ADDRESS 0x96 /* Data Address_Mode */
+
+#define FCR_MODE_HWECC_CALC 0xB4 /* HW-ECC Data */
+#define FCR_MODE_HWECC_RESULT 0xD4 /* HW-ECC Calc result Read_Mode */
+#define FCR_MODE_HWECC_RESET 0xF4 /* HW-ECC Reset */
+
+#define FCR_MODE_POWER_ON 0x0C /* Power Supply ON to SSFDC card */
+#define FCR_MODE_POWER_OFF 0x08 /* Power Supply OFF to SSFDC card */
+
+#define FCR_MODE_LED_OFF 0x00 /* LED OFF */
+#define FCR_MODE_LED_ON 0x04 /* LED ON */
+
+#define FCR_MODE_EJECT_ON 0x68 /* Ejection events active */
+#define FCR_MODE_EJECT_OFF 0x08 /* Ejection events ignored */
+
+#define FCR_MODE_LOCK 0x6C /* Lock_Mode. Eject Switch Invalid */
+#define FCR_MODE_UNLOCK 0x0C /* UnLock_Mode. Eject Switch is valid */
+
+#define FCR_MODE_CONTROLLER_ID 0x40 /* Controller ID Read */
+#define FCR_MODE_STANDBY 0x00 /* SSFDC card Changes Standby State */
+
+#define FCR_MODE_WE 0x80
+#define FCR_MODE_ECC1 0x40
+#define FCR_MODE_ECC0 0x20
+#define FCR_MODE_CE 0x10
+#define FCR_MODE_PCNT1 0x08
+#define FCR_MODE_PCNT0 0x04
+#define FCR_MODE_ALE 0x02
+#define FCR_MODE_CLE 0x01
+
+#define FCR_STATUS_BUSY 0x80
+
+/*--------------------------------------------------------------------------*/
+
+struct tmio_nand {
+ struct mtd_info mtd;
+ struct nand_chip chip;
+
+ struct platform_device *dev;
+
+ void __iomem *ccr;
+ void __iomem *fcr;
+ unsigned long fcr_phys;
+
+ unsigned int irq;
+
+ /* for tmio_nand_read_byte */
+ u8 read;
+ unsigned read_good:1;
+};
+
+#define mtd_to_tmio(m) container_of(m, struct tmio_nand, mtd)
+
+#ifdef CONFIG_MTD_CMDLINE_PARTS
+static const char *part_probes[] = { "cmdlinepart", NULL };
+#endif
+
+/*--------------------------------------------------------------------------*/
+
+static void tmio_nand_hwcontrol(struct mtd_info *mtd, int cmd,
+ unsigned int ctrl)
+{
+ struct tmio_nand *tmio = mtd_to_tmio(mtd);
+ struct nand_chip *chip = mtd->priv;
+
+ if (ctrl & NAND_CTRL_CHANGE) {
+ u8 mode;
+
+ if (ctrl & NAND_NCE) {
+ mode = FCR_MODE_DATA;
+
+ if (ctrl & NAND_CLE)
+ mode |= FCR_MODE_CLE;
+ else
+ mode &= ~FCR_MODE_CLE;
+
+ if (ctrl & NAND_ALE)
+ mode |= FCR_MODE_ALE;
+ else
+ mode &= ~FCR_MODE_ALE;
+ } else {
+ mode = FCR_MODE_STANDBY;
+ }
+
+ tmio_iowrite8(mode, tmio->fcr + FCR_MODE);
+ tmio->read_good = 0;
+ }
+
+ if (cmd != NAND_CMD_NONE)
+ tmio_iowrite8(cmd, chip->IO_ADDR_W);
+}
+
+static int tmio_nand_dev_ready(struct mtd_info *mtd)
+{
+ struct tmio_nand *tmio = mtd_to_tmio(mtd);
+
+ return !(tmio_ioread8(tmio->fcr + FCR_STATUS) & FCR_STATUS_BUSY);
+}
+
+static irqreturn_t tmio_irq(int irq, void *__tmio)
+{
+ struct tmio_nand *tmio = __tmio;
+ struct nand_chip *nand_chip = &tmio->chip;
+
+ /* disable RDYREQ interrupt */
+ tmio_iowrite8(0x00, tmio->fcr + FCR_IMR);
+
+ if (unlikely(!waitqueue_active(&nand_chip->controller->wq)))
+ dev_warn(&tmio->dev->dev, "spurious interrupt\n");
+
+ wake_up(&nand_chip->controller->wq);
+ return IRQ_HANDLED;
+}
+
+/*
+ *The TMIO core has a RDYREQ interrupt on the posedge of #SMRB.
+ *This interrupt is normally disabled, but for long operations like
+ *erase and write, we enable it to wake us up. The irq handler
+ *disables the interrupt.
+ */
+static int
+tmio_nand_wait(struct mtd_info *mtd, struct nand_chip *nand_chip)
+{
+ struct tmio_nand *tmio = mtd_to_tmio(mtd);
+ long timeout;
+
+ /* enable RDYREQ interrupt */
+ tmio_iowrite8(0x0f, tmio->fcr + FCR_ISR);
+ tmio_iowrite8(0x81, tmio->fcr + FCR_IMR);
+
+ timeout = wait_event_timeout(nand_chip->controller->wq,
+ tmio_nand_dev_ready(mtd),
+ msecs_to_jiffies(nand_chip->state == FL_ERASING ? 400 : 20));
+
+ if (unlikely(!tmio_nand_dev_ready(mtd))) {
+ tmio_iowrite8(0x00, tmio->fcr + FCR_IMR);
+ dev_warn(&tmio->dev->dev, "still busy with %s after %d ms\n",
+ nand_chip->state == FL_ERASING ? "erase" : "program",
+ nand_chip->state == FL_ERASING ? 400 : 20);
+
+ } else if (unlikely(!timeout)) {
+ tmio_iowrite8(0x00, tmio->fcr + FCR_IMR);
+ dev_warn(&tmio->dev->dev, "timeout waiting for interrupt\n");
+ }
+
+ nand_chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
+ return nand_chip->read_byte(mtd);
+}
+
+/*
+ *The TMIO controller combines two 8-bit data bytes into one 16-bit
+ *word. This function separates them so nand_base.c works as expected,
+ *especially its NAND_CMD_READID routines.
+ *
+ *To prevent stale data from being read, tmio_nand_hwcontrol() clears
+ *tmio->read_good.
+ */
+static u_char tmio_nand_read_byte(struct mtd_info *mtd)
+{
+ struct tmio_nand *tmio = mtd_to_tmio(mtd);
+ unsigned int data;
+
+ if (tmio->read_good--)
+ return tmio->read;
+
+ data = tmio_ioread16(tmio->fcr + FCR_DATA);
+ tmio->read = data >> 8;
+ return data;
+}
+
+/*
+ *The TMIO controller converts an 8-bit NAND interface to a 16-bit
+ *bus interface, so all data reads and writes must be 16-bit wide.
+ *Thus, we implement 16-bit versions of the read, write, and verify
+ *buffer functions.
+ */
+static void
+tmio_nand_write_buf(struct mtd_info *mtd, const u_char *buf, int len)
+{
+ struct tmio_nand *tmio = mtd_to_tmio(mtd);
+
+ tmio_iowrite16_rep(tmio->fcr + FCR_DATA, buf, len >> 1);
+}
+
+static void tmio_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
+{
+ struct tmio_nand *tmio = mtd_to_tmio(mtd);
+
+ tmio_ioread16_rep(tmio->fcr + FCR_DATA, buf, len >> 1);
+}
+
+static int
+tmio_nand_verify_buf(struct mtd_info *mtd, const u_char *buf, int len)
+{
+ struct tmio_nand *tmio = mtd_to_tmio(mtd);
+ u16 *p = (u16 *) buf;
+
+ for (len >>= 1; len; len--)
+ if (*(p++) != tmio_ioread16(tmio->fcr + FCR_DATA))
+ return -EFAULT;
+ return 0;
+}
+
+static void tmio_nand_enable_hwecc(struct mtd_info *mtd, int mode)
+{
+ struct tmio_nand *tmio = mtd_to_tmio(mtd);
+
+ tmio_iowrite8(FCR_MODE_HWECC_RESET, tmio->fcr + FCR_MODE);
+ tmio_ioread8(tmio->fcr + FCR_DATA); /* dummy read */
+ tmio_iowrite8(FCR_MODE_HWECC_CALC, tmio->fcr + FCR_MODE);
+}
+
+static int tmio_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat,
+ u_char *ecc_code)
+{
+ struct tmio_nand *tmio = mtd_to_tmio(mtd);
+ unsigned int ecc;
+
+ tmio_iowrite8(FCR_MODE_HWECC_RESULT, tmio->fcr + FCR_MODE);
+
+ ecc = tmio_ioread16(tmio->fcr + FCR_DATA);
+ ecc_code[1] = ecc; /* 000-255 LP7-0 */
+ ecc_code[0] = ecc >> 8; /* 000-255 LP15-8 */
+ ecc = tmio_ioread16(tmio->fcr + FCR_DATA);
+ ecc_code[2] = ecc; /* 000-255 CP5-0,11b */
+ ecc_code[4] = ecc >> 8; /* 256-511 LP7-0 */
+ ecc = tmio_ioread16(tmio->fcr + FCR_DATA);
+ ecc_code[3] = ecc; /* 256-511 LP15-8 */
+ ecc_code[5] = ecc >> 8; /* 256-511 CP5-0,11b */
+
+ tmio_iowrite8(FCR_MODE_DATA, tmio->fcr + FCR_MODE);
+ return 0;
+}
+
+static int tmio_hw_init(struct platform_device *dev, struct tmio_nand *tmio)
+{
+ struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data;
+ int ret;
+
+ if (cell->enable) {
+ ret = cell->enable(dev);
+ if (ret)
+ return ret;
+ }
+
+ /* (4Ch) CLKRUN Enable 1st spcrunc */
+ tmio_iowrite8(0x81, tmio->ccr + CCR_ICC);
+
+ /* (10h)BaseAddress 0x1000 spba.spba2 */
+ tmio_iowrite16(tmio->fcr_phys, tmio->ccr + CCR_BASE);
+ tmio_iowrite16(tmio->fcr_phys >> 16, tmio->ccr + CCR_BASE + 16);
+
+ /* (04h)Command Register I/O spcmd */
+ tmio_iowrite8(0x02, tmio->ccr + CCR_COMMAND);
+
+ /* (62h) Power Supply Control ssmpwc */
+ /* HardPowerOFF - SuspendOFF - PowerSupplyWait_4MS */
+ tmio_iowrite8(0x02, tmio->ccr + CCR_NFPSC);
+
+ /* (63h) Detect Control ssmdtc */
+ tmio_iowrite8(0x02, tmio->ccr + CCR_NFDC);
+
+ /* Interrupt status register clear sintst */
+ tmio_iowrite8(0x0f, tmio->fcr + FCR_ISR);
+
+ /* After power supply, Media are reset smode */
+ tmio_iowrite8(FCR_MODE_POWER_ON, tmio->fcr + FCR_MODE);
+ tmio_iowrite8(FCR_MODE_COMMAND, tmio->fcr + FCR_MODE);
+ tmio_iowrite8(NAND_CMD_RESET, tmio->fcr + FCR_DATA);
+
+ /* Standby Mode smode */
+ tmio_iowrite8(FCR_MODE_STANDBY, tmio->fcr + FCR_MODE);
+
+ mdelay(5);
+
+ return 0;
+}
+
+static void tmio_hw_stop(struct platform_device *dev, struct tmio_nand *tmio)
+{
+ struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data;
+
+ tmio_iowrite8(FCR_MODE_POWER_OFF, tmio->fcr + FCR_MODE);
+ if (cell->disable)
+ cell->disable(dev);
+}
+
+static int tmio_probe(struct platform_device *dev)
+{
+ struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data;
+ struct tmio_nand_data *data = cell->driver_data;
+ struct resource *fcr = platform_get_resource(dev,
+ IORESOURCE_MEM, 0);
+ struct resource *ccr = platform_get_resource(dev,
+ IORESOURCE_MEM, 1);
+ int irq = platform_get_irq(dev, 0);
+ struct tmio_nand *tmio;
+ struct mtd_info *mtd;
+ struct nand_chip *nand_chip;
+#ifdef CONFIG_MTD_PARTITIONS
+ struct mtd_partition *parts;
+ int nbparts = 0;
+#endif
+ int retval;
+
+ if (data == NULL)
+ dev_warn(&dev->dev, "NULL platform data!\n");
+
+ tmio = kzalloc(sizeof *tmio, GFP_KERNEL);
+ if (!tmio) {
+ retval = -ENOMEM;
+ goto err_kzalloc;
+ }
+
+ tmio->dev = dev;
+
+ platform_set_drvdata(dev, tmio);
+ mtd = &tmio->mtd;
+ nand_chip = &tmio->chip;
+ mtd->priv = nand_chip;
+ mtd->name = "tmio-nand";
+
+ tmio->ccr = ioremap(ccr->start, ccr->end - ccr->start + 1);
+ if (!tmio->ccr) {
+ retval = -EIO;
+ goto err_iomap_ccr;
+ }
+
+ tmio->fcr_phys = (unsigned long)fcr->start;
+ tmio->fcr = ioremap(fcr->start, fcr->end - fcr->start + 1);
+ if (!tmio->fcr) {
+ retval = -EIO;
+ goto err_iomap_fcr;
+ }
+
+ retval = tmio_hw_init(dev, tmio);
+ if (retval)
+ goto err_hwinit;
+
+ /* Set address of NAND IO lines */
+ nand_chip->IO_ADDR_R = tmio->fcr;
+ nand_chip->IO_ADDR_W = tmio->fcr;
+
+ /* Set address of hardware control function */
+ nand_chip->cmd_ctrl = tmio_nand_hwcontrol;
+ nand_chip->dev_ready = tmio_nand_dev_ready;
+ nand_chip->read_byte = tmio_nand_read_byte;
+ nand_chip->write_buf = tmio_nand_write_buf;
+ nand_chip->read_buf = tmio_nand_read_buf;
+ nand_chip->verify_buf = tmio_nand_verify_buf;
+
+ /* set eccmode using hardware ECC */
+ nand_chip->ecc.mode = NAND_ECC_HW;
+ nand_chip->ecc.size = 512;
+ nand_chip->ecc.bytes = 6;
+ nand_chip->ecc.hwctl = tmio_nand_enable_hwecc;
+ nand_chip->ecc.calculate = tmio_nand_calculate_ecc;
+ nand_chip->ecc.correct = nand_correct_data;
+
+ if (data)
+ nand_chip->badblock_pattern = data->badblock_pattern;
+
+ /* 15 us command delay time */
+ nand_chip->chip_delay = 15;
+
+ retval = request_irq(irq, &tmio_irq,
+ IRQF_DISABLED, dev->dev.bus_id, tmio);
+ if (retval) {
+ dev_err(&dev->dev, "request_irq error %d\n", retval);
+ goto err_irq;
+ }
+
+ tmio->irq = irq;
+ nand_chip->waitfunc = tmio_nand_wait;
+
+ /* Scan to find existence of the device */
+ if (nand_scan(mtd, 1)) {
+ retval = -ENODEV;
+ goto err_scan;
+ }
+ /* Register the partitions */
+#ifdef CONFIG_MTD_PARTITIONS
+#ifdef CONFIG_MTD_CMDLINE_PARTS
+ nbparts = parse_mtd_partitions(mtd, part_probes, &parts, 0);
+#endif
+ if (nbparts <= 0 && data) {
+ parts = data->partition;
+ nbparts = data->num_partitions;
+ }
+
+ if (nbparts)
+ retval = add_mtd_partitions(mtd, parts, nbparts);
+ else
+#endif
+ retval = add_mtd_device(mtd);
+
+ if (!retval)
+ return retval;
+
+ nand_release(mtd);
+
+err_scan:
+ if (tmio->irq)
+ free_irq(tmio->irq, tmio);
+err_irq:
+ tmio_hw_stop(dev, tmio);
+err_hwinit:
+ iounmap(tmio->fcr);
+err_iomap_fcr:
+ iounmap(tmio->ccr);
+err_iomap_ccr:
+ kfree(tmio);
+err_kzalloc:
+ return retval;
+}
+
+static int tmio_remove(struct platform_device *dev)
+{
+ struct tmio_nand *tmio = platform_get_drvdata(dev);
+
+ nand_release(&tmio->mtd);
+ if (tmio->irq)
+ free_irq(tmio->irq, tmio);
+ tmio_hw_stop(dev, tmio);
+ iounmap(tmio->fcr);
+ iounmap(tmio->ccr);
+ kfree(tmio);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int tmio_suspend(struct platform_device *dev, pm_message_t state)
+{
+ struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data;
+
+ if (cell->suspend)
+ cell->suspend(dev);
+
+ tmio_hw_stop(dev, platform_get_drvdata(dev));
+ return 0;
+}
+
+static int tmio_resume(struct platform_device *dev)
+{
+ struct mfd_cell *cell = (struct mfd_cell *)dev->dev.platform_data;
+
+ /* FIXME - is this required or merely another attack of the broken
+ * SHARP platform? Looks suspicious.
+ */
+ tmio_hw_init(dev, platform_get_drvdata(dev));
+
+ if (cell->resume)
+ cell->resume(dev);
+
+ return 0;
+}
+#else
+#define tmio_suspend NULL
+#define tmio_resume NULL
+#endif
+
+static struct platform_driver tmio_driver = {
+ .driver.name = "tmio-nand",
+ .driver.owner = THIS_MODULE,
+ .probe = tmio_probe,
+ .remove = tmio_remove,
+ .suspend = tmio_suspend,
+ .resume = tmio_resume,
+};
+
+static int __init tmio_init(void)
+{
+ return platform_driver_register(&tmio_driver);
+}
+
+static void __exit tmio_exit(void)
+{
+ platform_driver_unregister(&tmio_driver);
+}
+
+module_init(tmio_init);
+module_exit(tmio_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Ian Molton, Dirk Opfer, Chris Humbert, Dmitry Baryshkov");
+MODULE_DESCRIPTION("NAND flash driver on Toshiba Mobile IO controller");
+MODULE_ALIAS("platform:tmio-nand");
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 05:38:43 +0000