[ARM] 5128/1: tc6393xb: tmio-nand support
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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@ -45,6 +45,7 @@ config HTC_PASIC3
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config MFD_TC6393XB
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bool "Support Toshiba TC6393XB"
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depends on HAVE_GPIO_LIB
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select MFD_CORE
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help
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Support for Toshiba Mobile IO Controller TC6393XB
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@ -21,6 +21,8 @@
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#include <linux/platform_device.h>
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#include <linux/fb.h>
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#include <linux/clk.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/tmio.h>
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#include <linux/mfd/tc6393xb.h>
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#include <linux/gpio.h>
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@ -108,6 +110,59 @@ struct tc6393xb {
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int irq_base;
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};
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enum {
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TC6393XB_CELL_NAND,
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};
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/*--------------------------------------------------------------------------*/
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static int tc6393xb_nand_enable(struct platform_device *nand)
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{
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struct platform_device *dev = to_platform_device(nand->dev.parent);
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struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
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unsigned long flags;
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spin_lock_irqsave(&tc6393xb->lock, flags);
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/* SMD buffer on */
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dev_dbg(&dev->dev, "SMD buffer on\n");
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iowrite8(0xff, tc6393xb->scr + SCR_GPI_BCR(1));
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spin_unlock_irqrestore(&tc6393xb->lock, flags);
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return 0;
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}
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static struct resource __devinitdata tc6393xb_nand_resources[] = {
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{
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.name = TMIO_NAND_CONFIG,
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.start = 0x0100,
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.end = 0x01ff,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = TMIO_NAND_CONTROL,
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.start = 0x1000,
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.end = 0x1007,
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.flags = IORESOURCE_MEM,
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},
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{
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.name = TMIO_NAND_IRQ,
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.start = IRQ_TC6393_NAND,
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.end = IRQ_TC6393_NAND,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct mfd_cell __devinitdata tc6393xb_cells[] = {
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[TC6393XB_CELL_NAND] = {
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.name = "tmio-nand",
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.enable = tc6393xb_nand_enable,
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.num_resources = ARRAY_SIZE(tc6393xb_nand_resources),
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.resources = tc6393xb_nand_resources,
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},
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};
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/*--------------------------------------------------------------------------*/
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static int tc6393xb_gpio_get(struct gpio_chip *chip,
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@ -410,6 +465,12 @@ static int __devinit tc6393xb_probe(struct platform_device *dev)
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if (tc6393xb->irq)
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tc6393xb_attach_irq(dev);
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tc6393xb_cells[TC6393XB_CELL_NAND].driver_data = tcpd->nand_data;
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retval = mfd_add_devices(dev,
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tc6393xb_cells, ARRAY_SIZE(tc6393xb_cells),
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iomem, tcpd->irq_base);
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return 0;
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if (tc6393xb->irq)
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@ -440,6 +501,8 @@ static int __devexit tc6393xb_remove(struct platform_device *dev)
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struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
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int ret;
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mfd_remove_devices(dev);
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if (tc6393xb->irq)
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tc6393xb_detach_irq(dev);
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@ -31,6 +31,8 @@ struct tc6393xb_platform_data {
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int irq_base; /* a base for cascaded irq */
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int gpio_base;
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struct tmio_nand_data *nand_data;
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};
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/*
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17
include/linux/mfd/tmio.h
Normal file
17
include/linux/mfd/tmio.h
Normal file
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@ -0,0 +1,17 @@
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#ifndef MFD_TMIO_H
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#define MFD_TMIO_H
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/*
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* data for the NAND controller
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*/
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struct tmio_nand_data {
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struct nand_bbt_descr *badblock_pattern;
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struct mtd_partition *partition;
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unsigned int num_partitions;
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};
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#define TMIO_NAND_CONFIG "tmio-nand-config"
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#define TMIO_NAND_CONTROL "tmio-nand-control"
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#define TMIO_NAND_IRQ "tmio-nand"
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#endif
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