| /* |
| * 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> |
| |
| #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, |
| }; |
| |
| /*--------------------------------------------------------------------------*/ |
| |
| 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 __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, |
| }, |
| }; |
| |
| const static 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 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 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", |
| .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, |
| }, |
| }; |
| |
| /*--------------------------------------------------------------------------*/ |
| |
| 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 = get_irq_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(unsigned int irq) |
| { |
| } |
| |
| static void tc6393xb_irq_mask(unsigned int irq) |
| { |
| struct tc6393xb *tc6393xb = get_irq_chip_data(irq); |
| unsigned long flags; |
| u8 imr; |
| |
| spin_lock_irqsave(&tc6393xb->lock, flags); |
| imr = tmio_ioread8(tc6393xb->scr + SCR_IMR); |
| imr |= 1 << (irq - tc6393xb->irq_base); |
| tmio_iowrite8(imr, tc6393xb->scr + SCR_IMR); |
| spin_unlock_irqrestore(&tc6393xb->lock, flags); |
| } |
| |
| static void tc6393xb_irq_unmask(unsigned int irq) |
| { |
| struct tc6393xb *tc6393xb = get_irq_chip_data(irq); |
| unsigned long flags; |
| u8 imr; |
| |
| spin_lock_irqsave(&tc6393xb->lock, flags); |
| imr = tmio_ioread8(tc6393xb->scr + SCR_IMR); |
| imr &= ~(1 << (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", |
| .ack = tc6393xb_irq_ack, |
| .mask = tc6393xb_irq_mask, |
| .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++) { |
| set_irq_chip(irq, &tc6393xb_chip); |
| set_irq_chip_data(irq, tc6393xb); |
| set_irq_handler(irq, handle_edge_irq); |
| set_irq_flags(irq, IRQF_VALID | IRQF_PROBE); |
| } |
| |
| set_irq_type(tc6393xb->irq, IRQ_TYPE_EDGE_FALLING); |
| set_irq_data(tc6393xb->irq, tc6393xb); |
| set_irq_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; |
| |
| set_irq_chained_handler(tc6393xb->irq, NULL); |
| set_irq_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); |
| set_irq_chip(irq, NULL); |
| set_irq_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, rscr->end - rscr->start + 1); |
| 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].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]); |
| |
| tc6393xb_cells[TC6393XB_CELL_OHCI].platform_data = |
| &tc6393xb_cells[TC6393XB_CELL_OHCI]; |
| tc6393xb_cells[TC6393XB_CELL_OHCI].data_size = |
| sizeof(tc6393xb_cells[TC6393XB_CELL_OHCI]); |
| |
| |
| 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_clk_enable: |
| clk_disable(tc6393xb->clk); |
| err_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"); |