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path: root/drivers/mfd/t7l66xb.c
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Diffstat (limited to 'drivers/mfd/t7l66xb.c')
-rw-r--r--drivers/mfd/t7l66xb.c427
1 files changed, 0 insertions, 427 deletions
diff --git a/drivers/mfd/t7l66xb.c b/drivers/mfd/t7l66xb.c
deleted file mode 100644
index 1d9d1d38d068..000000000000
--- a/drivers/mfd/t7l66xb.c
+++ /dev/null
@@ -1,427 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *
- * Toshiba T7L66XB core mfd support
- *
- * Copyright (c) 2005, 2007, 2008 Ian Molton
- * Copyright (c) 2008 Dmitry Baryshkov
- *
- * 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/err.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <linux/irq.h>
-#include <linux/clk.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,
-};
-
-static const struct resource t7l66xb_mmc_resources[] = {
- DEFINE_RES_MEM(0x800, 0x200),
- DEFINE_RES_IRQ(IRQ_T7L66XB_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. */
- raw_spinlock_t lock;
-
- struct resource rscr;
- struct clk *clk48m;
- struct clk *clk32k;
- int irq;
- int irq_base;
-};
-
-/*--------------------------------------------------------------------------*/
-
-static int t7l66xb_mmc_enable(struct platform_device *mmc)
-{
- struct t7l66xb *t7l66xb = dev_get_drvdata(mmc->dev.parent);
- unsigned long flags;
- u8 dev_ctl;
- int ret;
-
- ret = clk_prepare_enable(t7l66xb->clk32k);
- if (ret)
- return ret;
-
- raw_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);
-
- raw_spin_unlock_irqrestore(&t7l66xb->lock, flags);
-
- tmio_core_mmc_enable(t7l66xb->scr + 0x200, 0,
- t7l66xb_mmc_resources[0].start & 0xfffe);
-
- return 0;
-}
-
-static int t7l66xb_mmc_disable(struct platform_device *mmc)
-{
- struct t7l66xb *t7l66xb = dev_get_drvdata(mmc->dev.parent);
- unsigned long flags;
- u8 dev_ctl;
-
- raw_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);
-
- raw_spin_unlock_irqrestore(&t7l66xb->lock, flags);
-
- clk_disable_unprepare(t7l66xb->clk32k);
-
- return 0;
-}
-
-static void t7l66xb_mmc_pwr(struct platform_device *mmc, int state)
-{
- struct t7l66xb *t7l66xb = dev_get_drvdata(mmc->dev.parent);
-
- tmio_core_mmc_pwr(t7l66xb->scr + 0x200, 0, state);
-}
-
-static void t7l66xb_mmc_clk_div(struct platform_device *mmc, int state)
-{
- struct t7l66xb *t7l66xb = dev_get_drvdata(mmc->dev.parent);
-
- tmio_core_mmc_clk_div(t7l66xb->scr + 0x200, 0, state);
-}
-
-/*--------------------------------------------------------------------------*/
-
-static struct tmio_mmc_data t7166xb_mmc_data = {
- .hclk = 24000000,
- .set_pwr = t7l66xb_mmc_pwr,
- .set_clk_div = t7l66xb_mmc_clk_div,
-};
-
-static const 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,
- .platform_data = &t7166xb_mmc_data,
- .pdata_size = sizeof(t7166xb_mmc_data),
- .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(struct irq_desc *desc)
-{
- struct t7l66xb *t7l66xb = irq_desc_get_handler_data(desc);
- 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(struct irq_data *data)
-{
- struct t7l66xb *t7l66xb = irq_data_get_irq_chip_data(data);
- unsigned long flags;
- u8 imr;
-
- raw_spin_lock_irqsave(&t7l66xb->lock, flags);
- imr = tmio_ioread8(t7l66xb->scr + SCR_IMR);
- imr |= 1 << (data->irq - t7l66xb->irq_base);
- tmio_iowrite8(imr, t7l66xb->scr + SCR_IMR);
- raw_spin_unlock_irqrestore(&t7l66xb->lock, flags);
-}
-
-static void t7l66xb_irq_unmask(struct irq_data *data)
-{
- struct t7l66xb *t7l66xb = irq_data_get_irq_chip_data(data);
- unsigned long flags;
- u8 imr;
-
- raw_spin_lock_irqsave(&t7l66xb->lock, flags);
- imr = tmio_ioread8(t7l66xb->scr + SCR_IMR);
- imr &= ~(1 << (data->irq - t7l66xb->irq_base));
- tmio_iowrite8(imr, t7l66xb->scr + SCR_IMR);
- raw_spin_unlock_irqrestore(&t7l66xb->lock, flags);
-}
-
-static struct irq_chip t7l66xb_chip = {
- .name = "t7l66xb",
- .irq_ack = t7l66xb_irq_mask,
- .irq_mask = t7l66xb_irq_mask,
- .irq_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++) {
- irq_set_chip_and_handler(irq, &t7l66xb_chip, handle_level_irq);
- irq_set_chip_data(irq, t7l66xb);
- }
-
- irq_set_irq_type(t7l66xb->irq, IRQ_TYPE_EDGE_FALLING);
- irq_set_chained_handler_and_data(t7l66xb->irq, t7l66xb_irq, t7l66xb);
-}
-
-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;
-
- irq_set_chained_handler_and_data(t7l66xb->irq, NULL, NULL);
-
- for (irq = irq_base; irq < irq_base + T7L66XB_NR_IRQS; irq++) {
- irq_set_chip(irq, NULL);
- irq_set_chip_data(irq, NULL);
- }
-}
-
-/*--------------------------------------------------------------------------*/
-
-static int t7l66xb_suspend(struct platform_device *dev, pm_message_t state)
-{
- struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
- struct t7l66xb_platform_data *pdata = dev_get_platdata(&dev->dev);
-
- if (pdata && pdata->suspend)
- pdata->suspend(dev);
- clk_disable_unprepare(t7l66xb->clk48m);
-
- return 0;
-}
-
-static int t7l66xb_resume(struct platform_device *dev)
-{
- struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
- struct t7l66xb_platform_data *pdata = dev_get_platdata(&dev->dev);
- int ret;
-
- ret = clk_prepare_enable(t7l66xb->clk48m);
- if (ret)
- return ret;
-
- if (pdata && pdata->resume)
- pdata->resume(dev);
-
- tmio_core_mmc_enable(t7l66xb->scr + 0x200, 0,
- t7l66xb_mmc_resources[0].start & 0xfffe);
-
- return 0;
-}
-
-/*--------------------------------------------------------------------------*/
-
-static int t7l66xb_probe(struct platform_device *dev)
-{
- struct t7l66xb_platform_data *pdata = dev_get_platdata(&dev->dev);
- struct t7l66xb *t7l66xb;
- struct resource *iomem, *rscr;
- int ret;
-
- if (!pdata)
- return -EINVAL;
-
- iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
- if (!iomem)
- return -EINVAL;
-
- t7l66xb = kzalloc(sizeof *t7l66xb, GFP_KERNEL);
- if (!t7l66xb)
- return -ENOMEM;
-
- raw_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;
-
- t7l66xb->clk32k = clk_get(&dev->dev, "CLK_CK32K");
- if (IS_ERR(t7l66xb->clk32k)) {
- ret = PTR_ERR(t7l66xb->clk32k);
- goto err_clk32k_get;
- }
-
- t7l66xb->clk48m = clk_get(&dev->dev, "CLK_CK48M");
- if (IS_ERR(t7l66xb->clk48m)) {
- ret = PTR_ERR(t7l66xb->clk48m);
- goto err_clk48m_get;
- }
-
- 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, resource_size(rscr));
- if (!t7l66xb->scr) {
- ret = -ENOMEM;
- goto err_ioremap;
- }
-
- ret = clk_prepare_enable(t7l66xb->clk48m);
- if (ret)
- goto err_clk_enable;
-
- if (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].platform_data = pdata->nand_data;
- t7l66xb_cells[T7L66XB_CELL_NAND].pdata_size = sizeof(*pdata->nand_data);
-
- ret = mfd_add_devices(&dev->dev, dev->id,
- t7l66xb_cells, ARRAY_SIZE(t7l66xb_cells),
- iomem, t7l66xb->irq_base, NULL);
-
- if (!ret)
- return 0;
-
- t7l66xb_detach_irq(dev);
- clk_disable_unprepare(t7l66xb->clk48m);
-err_clk_enable:
- iounmap(t7l66xb->scr);
-err_ioremap:
- release_resource(&t7l66xb->rscr);
-err_request_scr:
- clk_put(t7l66xb->clk48m);
-err_clk48m_get:
- clk_put(t7l66xb->clk32k);
-err_clk32k_get:
-err_noirq:
- kfree(t7l66xb);
- return ret;
-}
-
-static int t7l66xb_remove(struct platform_device *dev)
-{
- struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
-
- clk_disable_unprepare(t7l66xb->clk48m);
- clk_put(t7l66xb->clk48m);
- clk_disable_unprepare(t7l66xb->clk32k);
- clk_put(t7l66xb->clk32k);
- t7l66xb_detach_irq(dev);
- iounmap(t7l66xb->scr);
- release_resource(&t7l66xb->rscr);
- mfd_remove_devices(&dev->dev);
- kfree(t7l66xb);
-
- return 0;
-}
-
-static struct platform_driver t7l66xb_platform_driver = {
- .driver = {
- .name = "t7l66xb",
- },
- .suspend = pm_sleep_ptr(t7l66xb_suspend),
- .resume = pm_sleep_ptr(t7l66xb_resume),
- .probe = t7l66xb_probe,
- .remove = t7l66xb_remove,
-};
-
-/*--------------------------------------------------------------------------*/
-
-module_platform_driver(t7l66xb_platform_driver);
-
-MODULE_DESCRIPTION("Toshiba T7L66XB core driver");
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Ian Molton");
-MODULE_ALIAS("platform:t7l66xb");
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-16 11:35:13 +0000