/* * 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 __devinitdata 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 __devinitdata 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_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 __devinitdata 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_disable, .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 __devinit tc6393xb_probe(struct platform_device *dev) { struct tc6393xb_platform_data *tcpd = dev->dev.platform_data; struct tc6393xb *tc6393xb; struct resource *iomem, *rscr; int ret, temp; 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_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); if (!ret) return 0; if (tcpd->teardown) tcpd->teardown(dev); err_setup: tc6393xb_detach_irq(dev); err_gpio_add: if (tc6393xb->gpio.base != -1) temp = gpiochip_remove(&tc6393xb->gpio); tcpd->disable(dev); err_enable: clk_disable(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 __devexit tc6393xb_remove(struct platform_device *dev) { struct tc6393xb_platform_data *tcpd = dev->dev.platform_data; 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) { ret = gpiochip_remove(&tc6393xb->gpio); if (ret) { dev_err(&dev->dev, "Can't remove gpio chip: %d\n", ret); return ret; } } 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; } #ifdef CONFIG_PM 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, 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(tc6393xb->clk); return ret; } static int tc6393xb_resume(struct platform_device *dev) { struct tc6393xb_platform_data *tcpd = dev->dev.platform_data; struct tc6393xb *tc6393xb = platform_get_drvdata(dev); int ret; int i; clk_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 = __devexit_p(tc6393xb_remove), .suspend = tc6393xb_suspend, .resume = tc6393xb_resume, .driver = { .name = "tc6393xb", .owner = THIS_MODULE, }, }; 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");