--- /dev/null
+/*
+ * Toshiba TC6393XB SoC support
+ *
+ * Copyright(c) 2005-2006 Chris Humbert
+ * Copyright(c) 2005 Dirk Opfer
+ * Copyright(c) 2005 Ian Molton <spyro@f2s.com>
+ * Copyright(c) 2007 Dmitry Baryshkov
+ *
+ * Based on code written by Sharp/Lineo for 2.4 kernels
+ * Based on locomo.c
+ *
+ * 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/kernel.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/tmio.h>
+#include <linux/mfd/tc6393xb.h>
+#include <linux/gpio.h>
+#include <linux/slab.h>
+
+#define SCR_REVID 0x08 /* b Revision ID */
+#define SCR_ISR 0x50 /* b Interrupt Status */
+#define SCR_IMR 0x52 /* b Interrupt Mask */
+#define SCR_IRR 0x54 /* b Interrupt Routing */
+#define SCR_GPER 0x60 /* w GP Enable */
+#define SCR_GPI_SR(i) (0x64 + (i)) /* b3 GPI Status */
+#define SCR_GPI_IMR(i) (0x68 + (i)) /* b3 GPI INT Mask */
+#define SCR_GPI_EDER(i) (0x6c + (i)) /* b3 GPI Edge Detect Enable */
+#define SCR_GPI_LIR(i) (0x70 + (i)) /* b3 GPI Level Invert */
+#define SCR_GPO_DSR(i) (0x78 + (i)) /* b3 GPO Data Set */
+#define SCR_GPO_DOECR(i) (0x7c + (i)) /* b3 GPO Data OE Control */
+#define SCR_GP_IARCR(i) (0x80 + (i)) /* b3 GP Internal Active Register Control */
+#define SCR_GP_IARLCR(i) (0x84 + (i)) /* b3 GP INTERNAL Active Register Level Control */
+#define SCR_GPI_BCR(i) (0x88 + (i)) /* b3 GPI Buffer Control */
+#define SCR_GPA_IARCR 0x8c /* w GPa Internal Active Register Control */
+#define SCR_GPA_IARLCR 0x90 /* w GPa Internal Active Register Level Control */
+#define SCR_GPA_BCR 0x94 /* w GPa Buffer Control */
+#define SCR_CCR 0x98 /* w Clock Control */
+#define SCR_PLL2CR 0x9a /* w PLL2 Control */
+#define SCR_PLL1CR 0x9c /* l PLL1 Control */
+#define SCR_DIARCR 0xa0 /* b Device Internal Active Register Control */
+#define SCR_DBOCR 0xa1 /* b Device Buffer Off Control */
+#define SCR_FER 0xe0 /* b Function Enable */
+#define SCR_MCR 0xe4 /* w Mode Control */
+#define SCR_CONFIG 0xfc /* b Configuration Control */
+#define SCR_DEBUG 0xff /* b Debug */
+
+#define SCR_CCR_CK32K BIT(0)
+#define SCR_CCR_USBCK BIT(1)
+#define SCR_CCR_UNK1 BIT(4)
+#define SCR_CCR_MCLK_MASK (7 << 8)
+#define SCR_CCR_MCLK_OFF (0 << 8)
+#define SCR_CCR_MCLK_12 (1 << 8)
+#define SCR_CCR_MCLK_24 (2 << 8)
+#define SCR_CCR_MCLK_48 (3 << 8)
+#define SCR_CCR_HCLK_MASK (3 << 12)
+#define SCR_CCR_HCLK_24 (0 << 12)
+#define SCR_CCR_HCLK_48 (1 << 12)
+
+#define SCR_FER_USBEN BIT(0) /* USB host enable */
+#define SCR_FER_LCDCVEN BIT(1) /* polysilicon TFT enable */
+#define SCR_FER_SLCDEN BIT(2) /* SLCD enable */
+
+#define SCR_MCR_RDY_MASK (3 << 0)
+#define SCR_MCR_RDY_OPENDRAIN (0 << 0)
+#define SCR_MCR_RDY_TRISTATE (1 << 0)
+#define SCR_MCR_RDY_PUSHPULL (2 << 0)
+#define SCR_MCR_RDY_UNK BIT(2)
+#define SCR_MCR_RDY_EN BIT(3)
+#define SCR_MCR_INT_MASK (3 << 4)
+#define SCR_MCR_INT_OPENDRAIN (0 << 4)
+#define SCR_MCR_INT_TRISTATE (1 << 4)
+#define SCR_MCR_INT_PUSHPULL (2 << 4)
+#define SCR_MCR_INT_UNK BIT(6)
+#define SCR_MCR_INT_EN BIT(7)
+/* bits 8 - 16 are unknown */
+
+#define TC_GPIO_BIT(i) (1 << (i & 0x7))
+
+/*--------------------------------------------------------------------------*/
+
+struct tc6393xb {
+ void __iomem *scr;
+
+ struct gpio_chip gpio;
+
+ struct clk *clk; /* 3,6 Mhz */
+
+ spinlock_t lock; /* protects RMW cycles */
+
+ struct {
+ u8 fer;
+ u16 ccr;
+ u8 gpi_bcr[3];
+ u8 gpo_dsr[3];
+ u8 gpo_doecr[3];
+ } suspend_state;
+
+ struct resource rscr;
+ struct resource *iomem;
+ int irq;
+ int irq_base;
+};
+
+enum {
+ TC6393XB_CELL_NAND,
+ TC6393XB_CELL_MMC,
+ TC6393XB_CELL_OHCI,
+ TC6393XB_CELL_FB,
+};
+
+/*--------------------------------------------------------------------------*/
+
+static int tc6393xb_nand_enable(struct platform_device *nand)
+{
+ struct platform_device *dev = to_platform_device(nand->dev.parent);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+
+ /* SMD buffer on */
+ dev_dbg(&dev->dev, "SMD buffer on\n");
+ tmio_iowrite8(0xff, tc6393xb->scr + SCR_GPI_BCR(1));
+
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+ return 0;
+}
+
+static struct resource tc6393xb_nand_resources[] = {
+ {
+ .start = 0x1000,
+ .end = 0x1007,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0x0100,
+ .end = 0x01ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_TC6393_NAND,
+ .end = IRQ_TC6393_NAND,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource tc6393xb_mmc_resources[] = {
+ {
+ .start = 0x800,
+ .end = 0x9ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_TC6393_MMC,
+ .end = IRQ_TC6393_MMC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static const struct resource tc6393xb_ohci_resources[] = {
+ {
+ .start = 0x3000,
+ .end = 0x31ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0x0300,
+ .end = 0x03ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0x010000,
+ .end = 0x017fff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0x018000,
+ .end = 0x01ffff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_TC6393_OHCI,
+ .end = IRQ_TC6393_OHCI,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct resource tc6393xb_fb_resources[] = {
+ {
+ .start = 0x5000,
+ .end = 0x51ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0x0500,
+ .end = 0x05ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = 0x100000,
+ .end = 0x1fffff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_TC6393_FB,
+ .end = IRQ_TC6393_FB,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static int tc6393xb_ohci_enable(struct platform_device *dev)
+{
+ struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
+ unsigned long flags;
+ u16 ccr;
+ u8 fer;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+
+ ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
+ ccr |= SCR_CCR_USBCK;
+ tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
+
+ fer = tmio_ioread8(tc6393xb->scr + SCR_FER);
+ fer |= SCR_FER_USBEN;
+ tmio_iowrite8(fer, tc6393xb->scr + SCR_FER);
+
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+ return 0;
+}
+
+static int tc6393xb_ohci_disable(struct platform_device *dev)
+{
+ struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
+ unsigned long flags;
+ u16 ccr;
+ u8 fer;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+
+ fer = tmio_ioread8(tc6393xb->scr + SCR_FER);
+ fer &= ~SCR_FER_USBEN;
+ tmio_iowrite8(fer, tc6393xb->scr + SCR_FER);
+
+ ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
+ ccr &= ~SCR_CCR_USBCK;
+ tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
+
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+ return 0;
+}
+
+static int tc6393xb_ohci_suspend(struct platform_device *dev)
+{
+ struct tc6393xb_platform_data *tcpd = dev_get_platdata(dev->dev.parent);
+
+ /* We can't properly store/restore OHCI state, so fail here */
+ if (tcpd->resume_restore)
+ return -EBUSY;
+
+ return tc6393xb_ohci_disable(dev);
+}
+
+static int tc6393xb_fb_enable(struct platform_device *dev)
+{
+ struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
+ unsigned long flags;
+ u16 ccr;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+
+ ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
+ ccr &= ~SCR_CCR_MCLK_MASK;
+ ccr |= SCR_CCR_MCLK_48;
+ tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
+
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+ return 0;
+}
+
+static int tc6393xb_fb_disable(struct platform_device *dev)
+{
+ struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
+ unsigned long flags;
+ u16 ccr;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+
+ ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
+ ccr &= ~SCR_CCR_MCLK_MASK;
+ ccr |= SCR_CCR_MCLK_OFF;
+ tmio_iowrite16(ccr, tc6393xb->scr + SCR_CCR);
+
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+ return 0;
+}
+
+int tc6393xb_lcd_set_power(struct platform_device *fb, bool on)
+{
+ struct platform_device *dev = to_platform_device(fb->dev.parent);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+ u8 fer;
+ unsigned long flags;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+
+ fer = ioread8(tc6393xb->scr + SCR_FER);
+ if (on)
+ fer |= SCR_FER_SLCDEN;
+ else
+ fer &= ~SCR_FER_SLCDEN;
+ iowrite8(fer, tc6393xb->scr + SCR_FER);
+
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL(tc6393xb_lcd_set_power);
+
+int tc6393xb_lcd_mode(struct platform_device *fb,
+ const struct fb_videomode *mode) {
+ struct platform_device *dev = to_platform_device(fb->dev.parent);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+
+ iowrite16(mode->pixclock, tc6393xb->scr + SCR_PLL1CR + 0);
+ iowrite16(mode->pixclock >> 16, tc6393xb->scr + SCR_PLL1CR + 2);
+
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL(tc6393xb_lcd_mode);
+
+static int tc6393xb_mmc_enable(struct platform_device *mmc)
+{
+ struct platform_device *dev = to_platform_device(mmc->dev.parent);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+
+ tmio_core_mmc_enable(tc6393xb->scr + 0x200, 0,
+ tc6393xb_mmc_resources[0].start & 0xfffe);
+
+ return 0;
+}
+
+static int tc6393xb_mmc_resume(struct platform_device *mmc)
+{
+ struct platform_device *dev = to_platform_device(mmc->dev.parent);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+
+ tmio_core_mmc_resume(tc6393xb->scr + 0x200, 0,
+ tc6393xb_mmc_resources[0].start & 0xfffe);
+
+ return 0;
+}
+
+static void tc6393xb_mmc_pwr(struct platform_device *mmc, int state)
+{
+ struct platform_device *dev = to_platform_device(mmc->dev.parent);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+
+ tmio_core_mmc_pwr(tc6393xb->scr + 0x200, 0, state);
+}
+
+static void tc6393xb_mmc_clk_div(struct platform_device *mmc, int state)
+{
+ struct platform_device *dev = to_platform_device(mmc->dev.parent);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+
+ tmio_core_mmc_clk_div(tc6393xb->scr + 0x200, 0, state);
+}
+
+static struct tmio_mmc_data tc6393xb_mmc_data = {
+ .hclk = 24000000,
+ .set_pwr = tc6393xb_mmc_pwr,
+ .set_clk_div = tc6393xb_mmc_clk_div,
+};
+
+static struct mfd_cell tc6393xb_cells[] = {
+ [TC6393XB_CELL_NAND] = {
+ .name = "tmio-nand",
+ .enable = tc6393xb_nand_enable,
+ .num_resources = ARRAY_SIZE(tc6393xb_nand_resources),
+ .resources = tc6393xb_nand_resources,
+ },
+ [TC6393XB_CELL_MMC] = {
+ .name = "tmio-mmc",
+ .enable = tc6393xb_mmc_enable,
+ .resume = tc6393xb_mmc_resume,
+ .platform_data = &tc6393xb_mmc_data,
+ .pdata_size = sizeof(tc6393xb_mmc_data),
+ .num_resources = ARRAY_SIZE(tc6393xb_mmc_resources),
+ .resources = tc6393xb_mmc_resources,
+ },
+ [TC6393XB_CELL_OHCI] = {
+ .name = "tmio-ohci",
+ .num_resources = ARRAY_SIZE(tc6393xb_ohci_resources),
+ .resources = tc6393xb_ohci_resources,
+ .enable = tc6393xb_ohci_enable,
+ .suspend = tc6393xb_ohci_suspend,
+ .resume = tc6393xb_ohci_enable,
+ .disable = tc6393xb_ohci_disable,
+ },
+ [TC6393XB_CELL_FB] = {
+ .name = "tmio-fb",
+ .num_resources = ARRAY_SIZE(tc6393xb_fb_resources),
+ .resources = tc6393xb_fb_resources,
+ .enable = tc6393xb_fb_enable,
+ .suspend = tc6393xb_fb_disable,
+ .resume = tc6393xb_fb_enable,
+ .disable = tc6393xb_fb_disable,
+ },
+};
+
+/*--------------------------------------------------------------------------*/
+
+static int tc6393xb_gpio_get(struct gpio_chip *chip,
+ unsigned offset)
+{
+ struct tc6393xb *tc6393xb = container_of(chip, struct tc6393xb, gpio);
+
+ /* XXX: does dsr also represent inputs? */
+ return tmio_ioread8(tc6393xb->scr + SCR_GPO_DSR(offset / 8))
+ & TC_GPIO_BIT(offset);
+}
+
+static void __tc6393xb_gpio_set(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct tc6393xb *tc6393xb = container_of(chip, struct tc6393xb, gpio);
+ u8 dsr;
+
+ dsr = tmio_ioread8(tc6393xb->scr + SCR_GPO_DSR(offset / 8));
+ if (value)
+ dsr |= TC_GPIO_BIT(offset);
+ else
+ dsr &= ~TC_GPIO_BIT(offset);
+
+ tmio_iowrite8(dsr, tc6393xb->scr + SCR_GPO_DSR(offset / 8));
+}
+
+static void tc6393xb_gpio_set(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct tc6393xb *tc6393xb = container_of(chip, struct tc6393xb, gpio);
+ unsigned long flags;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+
+ __tc6393xb_gpio_set(chip, offset, value);
+
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+}
+
+static int tc6393xb_gpio_direction_input(struct gpio_chip *chip,
+ unsigned offset)
+{
+ struct tc6393xb *tc6393xb = container_of(chip, struct tc6393xb, gpio);
+ unsigned long flags;
+ u8 doecr;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+
+ doecr = tmio_ioread8(tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
+ doecr &= ~TC_GPIO_BIT(offset);
+ tmio_iowrite8(doecr, tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
+
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+ return 0;
+}
+
+static int tc6393xb_gpio_direction_output(struct gpio_chip *chip,
+ unsigned offset, int value)
+{
+ struct tc6393xb *tc6393xb = container_of(chip, struct tc6393xb, gpio);
+ unsigned long flags;
+ u8 doecr;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+
+ __tc6393xb_gpio_set(chip, offset, value);
+
+ doecr = tmio_ioread8(tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
+ doecr |= TC_GPIO_BIT(offset);
+ tmio_iowrite8(doecr, tc6393xb->scr + SCR_GPO_DOECR(offset / 8));
+
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+
+ return 0;
+}
+
+static int tc6393xb_register_gpio(struct tc6393xb *tc6393xb, int gpio_base)
+{
+ tc6393xb->gpio.label = "tc6393xb";
+ tc6393xb->gpio.base = gpio_base;
+ tc6393xb->gpio.ngpio = 16;
+ tc6393xb->gpio.set = tc6393xb_gpio_set;
+ tc6393xb->gpio.get = tc6393xb_gpio_get;
+ tc6393xb->gpio.direction_input = tc6393xb_gpio_direction_input;
+ tc6393xb->gpio.direction_output = tc6393xb_gpio_direction_output;
+
+ return gpiochip_add(&tc6393xb->gpio);
+}
+
+/*--------------------------------------------------------------------------*/
+
+static void
+tc6393xb_irq(unsigned int irq, struct irq_desc *desc)
+{
+ struct tc6393xb *tc6393xb = irq_get_handler_data(irq);
+ unsigned int isr;
+ unsigned int i, irq_base;
+
+ irq_base = tc6393xb->irq_base;
+
+ 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);
+ }
+}
+
+static void tc6393xb_irq_ack(struct irq_data *data)
+{
+}
+
+static void tc6393xb_irq_mask(struct irq_data *data)
+{
+ struct tc6393xb *tc6393xb = irq_data_get_irq_chip_data(data);
+ unsigned long flags;
+ u8 imr;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+ imr = tmio_ioread8(tc6393xb->scr + SCR_IMR);
+ imr |= 1 << (data->irq - tc6393xb->irq_base);
+ tmio_iowrite8(imr, tc6393xb->scr + SCR_IMR);
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+}
+
+static void tc6393xb_irq_unmask(struct irq_data *data)
+{
+ struct tc6393xb *tc6393xb = irq_data_get_irq_chip_data(data);
+ unsigned long flags;
+ u8 imr;
+
+ spin_lock_irqsave(&tc6393xb->lock, flags);
+ imr = tmio_ioread8(tc6393xb->scr + SCR_IMR);
+ imr &= ~(1 << (data->irq - tc6393xb->irq_base));
+ tmio_iowrite8(imr, tc6393xb->scr + SCR_IMR);
+ spin_unlock_irqrestore(&tc6393xb->lock, flags);
+}
+
+static struct irq_chip tc6393xb_chip = {
+ .name = "tc6393xb",
+ .irq_ack = tc6393xb_irq_ack,
+ .irq_mask = tc6393xb_irq_mask,
+ .irq_unmask = tc6393xb_irq_unmask,
+};
+
+static void tc6393xb_attach_irq(struct platform_device *dev)
+{
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+ unsigned int irq, irq_base;
+
+ irq_base = tc6393xb->irq_base;
+
+ for (irq = irq_base; irq < irq_base + TC6393XB_NR_IRQS; irq++) {
+ irq_set_chip_and_handler(irq, &tc6393xb_chip, handle_edge_irq);
+ irq_set_chip_data(irq, tc6393xb);
+ set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
+ }
+
+ irq_set_irq_type(tc6393xb->irq, IRQ_TYPE_EDGE_FALLING);
+ irq_set_handler_data(tc6393xb->irq, tc6393xb);
+ irq_set_chained_handler(tc6393xb->irq, tc6393xb_irq);
+}
+
+static void tc6393xb_detach_irq(struct platform_device *dev)
+{
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+ unsigned int irq, irq_base;
+
+ irq_set_chained_handler(tc6393xb->irq, NULL);
+ irq_set_handler_data(tc6393xb->irq, NULL);
+
+ irq_base = tc6393xb->irq_base;
+
+ for (irq = irq_base; irq < irq_base + TC6393XB_NR_IRQS; irq++) {
+ set_irq_flags(irq, 0);
+ irq_set_chip(irq, NULL);
+ irq_set_chip_data(irq, NULL);
+ }
+}
+
+/*--------------------------------------------------------------------------*/
+
+static int tc6393xb_probe(struct platform_device *dev)
+{
+ struct tc6393xb_platform_data *tcpd = dev_get_platdata(&dev->dev);
+ struct tc6393xb *tc6393xb;
+ struct resource *iomem, *rscr;
+ int ret;
+
+ iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
+ if (!iomem)
+ return -EINVAL;
+
+ tc6393xb = kzalloc(sizeof *tc6393xb, GFP_KERNEL);
+ if (!tc6393xb) {
+ 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_base = tcpd->irq_base;
+
+ tc6393xb->clk = clk_get(&dev->dev, "CLK_CK3P6MI");
+ if (IS_ERR(tc6393xb->clk)) {
+ ret = PTR_ERR(tc6393xb->clk);
+ goto err_clk_get;
+ }
+
+ rscr = &tc6393xb->rscr;
+ rscr->name = "tc6393xb-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;
+
+ tc6393xb->scr = ioremap(rscr->start, resource_size(rscr));
+ if (!tc6393xb->scr) {
+ ret = -ENOMEM;
+ goto err_ioremap;
+ }
+
+ ret = clk_prepare_enable(tc6393xb->clk);
+ if (ret)
+ goto err_clk_enable;
+
+ ret = tcpd->enable(dev);
+ if (ret)
+ goto err_enable;
+
+ iowrite8(0, tc6393xb->scr + SCR_FER);
+ iowrite16(tcpd->scr_pll2cr, tc6393xb->scr + SCR_PLL2CR);
+ iowrite16(SCR_CCR_UNK1 | SCR_CCR_HCLK_48,
+ tc6393xb->scr + SCR_CCR);
+ iowrite16(SCR_MCR_RDY_OPENDRAIN | SCR_MCR_RDY_UNK | SCR_MCR_RDY_EN |
+ SCR_MCR_INT_OPENDRAIN | SCR_MCR_INT_UNK | SCR_MCR_INT_EN |
+ BIT(15), tc6393xb->scr + SCR_MCR);
+ iowrite16(tcpd->scr_gper, tc6393xb->scr + SCR_GPER);
+ iowrite8(0, tc6393xb->scr + SCR_IRR);
+ iowrite8(0xbf, tc6393xb->scr + SCR_IMR);
+
+ printk(KERN_INFO "Toshiba tc6393xb revision %d at 0x%08lx, irq %d\n",
+ tmio_ioread8(tc6393xb->scr + SCR_REVID),
+ (unsigned long) iomem->start, tc6393xb->irq);
+
+ tc6393xb->gpio.base = -1;
+
+ if (tcpd->gpio_base >= 0) {
+ ret = tc6393xb_register_gpio(tc6393xb, tcpd->gpio_base);
+ if (ret)
+ goto err_gpio_add;
+ }
+
+ tc6393xb_attach_irq(dev);
+
+ if (tcpd->setup) {
+ ret = tcpd->setup(dev);
+ if (ret)
+ goto err_setup;
+ }
+
+ tc6393xb_cells[TC6393XB_CELL_NAND].platform_data = tcpd->nand_data;
+ tc6393xb_cells[TC6393XB_CELL_NAND].pdata_size =
+ sizeof(*tcpd->nand_data);
+ tc6393xb_cells[TC6393XB_CELL_FB].platform_data = tcpd->fb_data;
+ tc6393xb_cells[TC6393XB_CELL_FB].pdata_size = sizeof(*tcpd->fb_data);
+
+ ret = mfd_add_devices(&dev->dev, dev->id,
+ tc6393xb_cells, ARRAY_SIZE(tc6393xb_cells),
+ iomem, tcpd->irq_base, NULL);
+
+ if (!ret)
+ return 0;
+
+ if (tcpd->teardown)
+ tcpd->teardown(dev);
+
+err_setup:
+ tc6393xb_detach_irq(dev);
+
+err_gpio_add:
+ if (tc6393xb->gpio.base != -1)
+ gpiochip_remove(&tc6393xb->gpio);
+ tcpd->disable(dev);
+err_enable:
+ clk_disable_unprepare(tc6393xb->clk);
+err_clk_enable:
+ iounmap(tc6393xb->scr);
+err_ioremap:
+ release_resource(&tc6393xb->rscr);
+err_request_scr:
+ clk_put(tc6393xb->clk);
+err_noirq:
+err_clk_get:
+ kfree(tc6393xb);
+err_kzalloc:
+ return ret;
+}
+
+static int tc6393xb_remove(struct platform_device *dev)
+{
+ struct tc6393xb_platform_data *tcpd = dev_get_platdata(&dev->dev);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+ int ret;
+
+ mfd_remove_devices(&dev->dev);
+
+ if (tcpd->teardown)
+ tcpd->teardown(dev);
+
+ tc6393xb_detach_irq(dev);
+
+ if (tc6393xb->gpio.base != -1)
+ gpiochip_remove(&tc6393xb->gpio);
+
+ ret = tcpd->disable(dev);
+ clk_disable_unprepare(tc6393xb->clk);
+ iounmap(tc6393xb->scr);
+ release_resource(&tc6393xb->rscr);
+ clk_put(tc6393xb->clk);
+ kfree(tc6393xb);
+
+ return ret;
+}
+
+#ifdef CONFIG_PM
+static int tc6393xb_suspend(struct platform_device *dev, pm_message_t state)
+{
+ struct tc6393xb_platform_data *tcpd = dev_get_platdata(&dev->dev);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+ int i, ret;
+
+ tc6393xb->suspend_state.ccr = ioread16(tc6393xb->scr + SCR_CCR);
+ tc6393xb->suspend_state.fer = ioread8(tc6393xb->scr + SCR_FER);
+
+ for (i = 0; i < 3; i++) {
+ tc6393xb->suspend_state.gpo_dsr[i] =
+ ioread8(tc6393xb->scr + SCR_GPO_DSR(i));
+ tc6393xb->suspend_state.gpo_doecr[i] =
+ ioread8(tc6393xb->scr + SCR_GPO_DOECR(i));
+ tc6393xb->suspend_state.gpi_bcr[i] =
+ ioread8(tc6393xb->scr + SCR_GPI_BCR(i));
+ }
+ ret = tcpd->suspend(dev);
+ clk_disable_unprepare(tc6393xb->clk);
+
+ return ret;
+}
+
+static int tc6393xb_resume(struct platform_device *dev)
+{
+ struct tc6393xb_platform_data *tcpd = dev_get_platdata(&dev->dev);
+ struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
+ int ret;
+ int i;
+
+ clk_prepare_enable(tc6393xb->clk);
+
+ ret = tcpd->resume(dev);
+ if (ret)
+ return ret;
+
+ if (!tcpd->resume_restore)
+ return 0;
+
+ iowrite8(tc6393xb->suspend_state.fer, tc6393xb->scr + SCR_FER);
+ iowrite16(tcpd->scr_pll2cr, tc6393xb->scr + SCR_PLL2CR);
+ iowrite16(tc6393xb->suspend_state.ccr, tc6393xb->scr + SCR_CCR);
+ iowrite16(SCR_MCR_RDY_OPENDRAIN | SCR_MCR_RDY_UNK | SCR_MCR_RDY_EN |
+ SCR_MCR_INT_OPENDRAIN | SCR_MCR_INT_UNK | SCR_MCR_INT_EN |
+ BIT(15), tc6393xb->scr + SCR_MCR);
+ iowrite16(tcpd->scr_gper, tc6393xb->scr + SCR_GPER);
+ iowrite8(0, tc6393xb->scr + SCR_IRR);
+ iowrite8(0xbf, tc6393xb->scr + SCR_IMR);
+
+ for (i = 0; i < 3; i++) {
+ iowrite8(tc6393xb->suspend_state.gpo_dsr[i],
+ tc6393xb->scr + SCR_GPO_DSR(i));
+ iowrite8(tc6393xb->suspend_state.gpo_doecr[i],
+ tc6393xb->scr + SCR_GPO_DOECR(i));
+ iowrite8(tc6393xb->suspend_state.gpi_bcr[i],
+ tc6393xb->scr + SCR_GPI_BCR(i));
+ }
+
+ return 0;
+}
+#else
+#define tc6393xb_suspend NULL
+#define tc6393xb_resume NULL
+#endif
+
+static struct platform_driver tc6393xb_driver = {
+ .probe = tc6393xb_probe,
+ .remove = tc6393xb_remove,
+ .suspend = tc6393xb_suspend,
+ .resume = tc6393xb_resume,
+
+ .driver = {
+ .name = "tc6393xb",
+ },
+};
+
+static int __init tc6393xb_init(void)
+{
+ return platform_driver_register(&tc6393xb_driver);
+}
+
+static void __exit tc6393xb_exit(void)
+{
+ platform_driver_unregister(&tc6393xb_driver);
+}
+
+subsys_initcall(tc6393xb_init);
+module_exit(tc6393xb_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Ian Molton, Dmitry Baryshkov and Dirk Opfer");
+MODULE_DESCRIPTION("tc6393xb Toshiba Mobile IO Controller");
+MODULE_ALIAS("platform:tc6393xb");
+
Code Review / kvmfornfv.git / blobdiff