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C++ devm_request_mem_region函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中devm_request_mem_region函数的典型用法代码示例。如果您正苦于以下问题：C++ devm_request_mem_region函数的具体用法？C++ devm_request_mem_region怎么用？C++ devm_request_mem_region使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了devm_request_mem_region函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: ltq_stp_probe

static int __devinit ltq_stp_probe(struct platform_device *pdev)
{
	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	int ret = 0;

	if (!res)
		return -ENOENT;
	res = devm_request_mem_region(&pdev->dev, res->start,
		resource_size(res), dev_name(&pdev->dev));
	if (!res) {
		dev_err(&pdev->dev, "failed to request STP memory\n");
		return -EBUSY;
	}
	ltq_stp_membase = devm_ioremap_nocache(&pdev->dev, res->start,
		resource_size(res));
	if (!ltq_stp_membase) {
		dev_err(&pdev->dev, "failed to remap STP memory\n");
		return -ENOMEM;
	}
	ret = gpiochip_add(&ltq_stp_chip);
	if (!ret)
		ret = ltq_stp_hw_init();

	return ret;
}
开发者ID:08opt，项目名称:linux，代码行数:25，代码来源:gpio_stp.c


示例2: imx2_wdt_probe

static int __init imx2_wdt_probe(struct platform_device *pdev)
{
	int ret;
	int res_size;
	struct resource *res;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "can't get device resources\n");
		return -ENODEV;
	}

	res_size = resource_size(res);
	if (!devm_request_mem_region(&pdev->dev, res->start, res_size,
		res->name)) {
		dev_err(&pdev->dev, "can't allocate %d bytes at %d address\n",
			res_size, res->start);
		return -ENOMEM;
	}

	imx2_wdt.base = devm_ioremap_nocache(&pdev->dev, res->start, res_size);
	if (!imx2_wdt.base) {
		dev_err(&pdev->dev, "ioremap failed\n");
		return -ENOMEM;
	}

<<<<<<< HEAD
开发者ID:Core2idiot，项目名称:Kernel-Samsung-3.0...-，代码行数:27，代码来源:imx2_wdt.c


示例3: BUG_ON

/**
 * devm_request_and_ioremap() - Check, request region, and ioremap resource
 * @dev: Generic device to handle the resource for
 * @res: resource to be handled
 *
 * Takes all necessary steps to ioremap a mem resource. Uses managed device, so
 * everything is undone on driver detach. Checks arguments, so you can feed
 * it the result from e.g. platform_get_resource() directly. Returns the
 * remapped pointer or NULL on error. Usage example:
 *
 *	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 *	base = devm_request_and_ioremap(&pdev->dev, res);
 *	if (!base)
 *		return -EADDRNOTAVAIL;
 */
void __iomem *devm_request_and_ioremap(struct device *dev,
			struct resource *res)
{
	resource_size_t size;
	const char *name;
	void __iomem *dest_ptr;

	BUG_ON(!dev);

	if (!res || resource_type(res) != IORESOURCE_MEM) {
		dev_err(dev, "invalid resource\n");
		return NULL;
	}

	size = resource_size(res);
	name = res->name ?: dev_name(dev);

	if (!devm_request_mem_region(dev, res->start, size, name)) {
		dev_err(dev, "can't request region for resource %pR\n", res);
		return NULL;
	}

	if (res->flags & IORESOURCE_CACHEABLE)
		dest_ptr = devm_ioremap(dev, res->start, size);
	else
		dest_ptr = devm_ioremap_nocache(dev, res->start, size);

	if (!dest_ptr) {
		dev_err(dev, "ioremap failed for resource %pR\n", res);
		devm_release_mem_region(dev, res->start, size);
	}

	return dest_ptr;
}
开发者ID:AndroidDeveloperAlliance，项目名称:ZenKernel_Grouper，代码行数:49，代码来源:devres.c


示例4: meson_uart_request_port

static int meson_uart_request_port(struct uart_port *port)
{
	struct platform_device *pdev = to_platform_device(port->dev);
	struct resource *res;
	int size;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "cannot obtain I/O memory region");
		return -ENODEV;
	}
	size = resource_size(res);

	if (!devm_request_mem_region(port->dev, port->mapbase, size,
				     dev_name(port->dev))) {
		dev_err(port->dev, "Memory region busy\n");
		return -EBUSY;
	}

	if (port->flags & UPF_IOREMAP) {
		port->membase = devm_ioremap_nocache(port->dev,
						     port->mapbase,
						     size);
		if (port->membase == NULL)
			return -ENOMEM;
	}

	return 0;
}
开发者ID:3null，项目名称:linux，代码行数:29，代码来源:meson_uart.c


示例5: BUG_ON

/**
 * devm_ioremap_resource() - check, request region, and ioremap resource
 * @dev: generic device to handle the resource for
 * @res: resource to be handled
 *
 * Checks that a resource is a valid memory region, requests the memory
 * region and ioremaps it. All operations are managed and will be undone
 * on driver detach.
 *
 * Returns a pointer to the remapped memory or an ERR_PTR() encoded error code
 * on failure. Usage example:
 *
 *	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 *	base = devm_ioremap_resource(&pdev->dev, res);
 *	if (IS_ERR(base))
 *		return PTR_ERR(base);
 */
void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res)
{
	resource_size_t size;
	const char *name;
	void __iomem *dest_ptr;

	BUG_ON(!dev);

	if (!res || resource_type(res) != IORESOURCE_MEM) {
		dev_err(dev, "invalid resource\n");
		return IOMEM_ERR_PTR(-EINVAL);
	}

	size = resource_size(res);
	name = res->name ?: dev_name(dev);

	if (!devm_request_mem_region(dev, res->start, size, name)) {
		dev_err(dev, "can't request region for resource %pR\n", res);
		return IOMEM_ERR_PTR(-EBUSY);
	}

	dest_ptr = devm_ioremap(dev, res->start, size);
	if (!dest_ptr) {
		dev_err(dev, "ioremap failed for resource %pR\n", res);
		devm_release_mem_region(dev, res->start, size);
		dest_ptr = IOMEM_ERR_PTR(-ENOMEM);
	}

	return dest_ptr;
}
开发者ID:pironex，项目名称:pia-linux-kernel，代码行数:47，代码来源:devres.c


示例6: ltq_wdt_probe

static int __init
ltq_wdt_probe(struct platform_device *pdev)
{
    struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
    struct clk *clk;

    if (!res) {
        dev_err(&pdev->dev, "cannot obtain I/O memory region");
        return -ENOENT;
    }
    res = devm_request_mem_region(&pdev->dev, res->start,
                                  resource_size(res), dev_name(&pdev->dev));
    if (!res) {
        dev_err(&pdev->dev, "cannot request I/O memory region");
        return -EBUSY;
    }
    ltq_wdt_membase = devm_ioremap_nocache(&pdev->dev, res->start,
                                           resource_size(res));
    if (!ltq_wdt_membase) {
        dev_err(&pdev->dev, "cannot remap I/O memory region\n");
        return -ENOMEM;
    }

    /* we do not need to enable the clock as it is always running */
    clk = clk_get(&pdev->dev, "io");
    WARN_ON(!clk);
    ltq_io_region_clk_rate = clk_get_rate(clk);
    clk_put(clk);

    if (ltq_reset_cause() == LTQ_RST_CAUSE_WDTRST)
        ltq_wdt_bootstatus = WDIOF_CARDRESET;

    return misc_register(&ltq_wdt_miscdev);
}
开发者ID:openube，项目名称:android_kernel_sony_c2305，代码行数:34，代码来源:lantiq_wdt.c


示例7: mga_vram_init

/* Map the framebuffer from the card and configure the core */
static int mga_vram_init(struct mga_device *mdev)
{
	void __iomem *mem;
	struct apertures_struct *aper = alloc_apertures(1);
	if (!aper)
		return -ENOMEM;

	/* BAR 0 is VRAM */
	mdev->mc.vram_base = pci_resource_start(mdev->dev->pdev, 0);
	mdev->mc.vram_window = pci_resource_len(mdev->dev->pdev, 0);

	aper->ranges[0].base = mdev->mc.vram_base;
	aper->ranges[0].size = mdev->mc.vram_window;

	remove_conflicting_framebuffers(aper, "mgafb", true);
	kfree(aper);

	if (!devm_request_mem_region(mdev->dev->dev, mdev->mc.vram_base, mdev->mc.vram_window,
				"mgadrmfb_vram")) {
		DRM_ERROR("can't reserve VRAM\n");
		return -ENXIO;
	}

	mem = pci_iomap(mdev->dev->pdev, 0, 0);

	mdev->mc.vram_size = mga_probe_vram(mdev, mem);

	pci_iounmap(mdev->dev->pdev, mem);

	return 0;
}
开发者ID:AD5GB，项目名称:kernel_n5_3.10-experimental，代码行数:32，代码来源:mgag200_main.c


示例8: ds1553_rtc_probe

static int ds1553_rtc_probe(struct platform_device *pdev)
{
	struct rtc_device *rtc;
	struct resource *res;
	unsigned int cen, sec;
	struct rtc_plat_data *pdata;
	void __iomem *ioaddr;
	int ret = 0;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res)
		return -ENODEV;
	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
	if (!pdata)
		return -ENOMEM;
	if (!devm_request_mem_region(&pdev->dev, res->start, RTC_REG_SIZE,
			pdev->name))
		return -EBUSY;

	ioaddr = devm_ioremap(&pdev->dev, res->start, RTC_REG_SIZE);
	if (!ioaddr)
		return -ENOMEM;
	pdata->ioaddr = ioaddr;
	pdata->irq = platform_get_irq(pdev, 0);

	/* turn RTC on if it was not on */
	sec = readb(ioaddr + RTC_SECONDS);
	if (sec & RTC_STOP) {
		sec &= RTC_SECONDS_MASK;
		cen = readb(ioaddr + RTC_CENTURY) & RTC_CENTURY_MASK;
		writeb(RTC_WRITE, ioaddr + RTC_CONTROL);
		writeb(sec, ioaddr + RTC_SECONDS);
		writeb(cen & RTC_CENTURY_MASK, ioaddr + RTC_CONTROL);
	}
	if (readb(ioaddr + RTC_FLAGS) & RTC_FLAGS_BLF)
		dev_warn(&pdev->dev, "voltage-low detected.\n");

	spin_lock_init(&pdata->lock);
	pdata->last_jiffies = jiffies;
	platform_set_drvdata(pdev, pdata);
	if (pdata->irq > 0) {
		writeb(0, ioaddr + RTC_INTERRUPTS);
		if (devm_request_irq(&pdev->dev, pdata->irq,
				ds1553_rtc_interrupt,
				0, pdev->name, pdev) < 0) {
			dev_warn(&pdev->dev, "interrupt not available.\n");
			pdata->irq = 0;
		}
	}

	rtc = devm_rtc_device_register(&pdev->dev, pdev->name,
				  &ds1553_rtc_ops, THIS_MODULE);
	if (IS_ERR(rtc))
		return PTR_ERR(rtc);
	pdata->rtc = rtc;

	ret = sysfs_create_bin_file(&pdev->dev.kobj, &ds1553_nvram_attr);

	return ret;
}
开发者ID:AD5GB，项目名称:kernel_n5_3.10-experimental，代码行数:60，代码来源:rtc-ds1553.c


示例9: fsl_create_mc_io

/**
 * Creates an MC I/O object
 *
 * @dev: device to be associated with the MC I/O object
 * @mc_portal_phys_addr: physical address of the MC portal to use
 * @mc_portal_size: size in bytes of the MC portal
 * @dpmcp-dev: Pointer to the DPMCP object associated with this MC I/O
 * object or NULL if none.
 * @flags: flags for the new MC I/O object
 * @new_mc_io: Area to return pointer to newly created MC I/O object
 *
 * Returns '0' on Success; Error code otherwise.
 */
int __must_check fsl_create_mc_io(struct device *dev,
				  phys_addr_t mc_portal_phys_addr,
				  u32 mc_portal_size,
				  struct fsl_mc_device *dpmcp_dev,
				  u32 flags, struct fsl_mc_io **new_mc_io)
{
	int error;
	struct fsl_mc_io *mc_io;
	void __iomem *mc_portal_virt_addr;
	struct resource *res;

	mc_io = devm_kzalloc(dev, sizeof(*mc_io), GFP_KERNEL);
	if (!mc_io)
		return -ENOMEM;

	mc_io->dev = dev;
	mc_io->flags = flags;
	mc_io->portal_phys_addr = mc_portal_phys_addr;
	mc_io->portal_size = mc_portal_size;
	if (flags & FSL_MC_IO_ATOMIC_CONTEXT_PORTAL)
		spin_lock_init(&mc_io->spinlock);
	else
		mutex_init(&mc_io->mutex);

	res = devm_request_mem_region(dev,
				      mc_portal_phys_addr,
				      mc_portal_size,
				      "mc_portal");
	if (!res) {
		dev_err(dev,
			"devm_request_mem_region failed for MC portal %#llx\n",
			mc_portal_phys_addr);
		return -EBUSY;
	}

	mc_portal_virt_addr = devm_ioremap_nocache(dev,
						   mc_portal_phys_addr,
						   mc_portal_size);
	if (!mc_portal_virt_addr) {
		dev_err(dev,
			"devm_ioremap_nocache failed for MC portal %#llx\n",
			mc_portal_phys_addr);
		return -ENXIO;
	}

	mc_io->portal_virt_addr = mc_portal_virt_addr;
	if (dpmcp_dev) {
		error = fsl_mc_io_set_dpmcp(mc_io, dpmcp_dev);
		if (error < 0)
			goto error_destroy_mc_io;
	}

	*new_mc_io = mc_io;
	return 0;

error_destroy_mc_io:
	fsl_destroy_mc_io(mc_io);
	return error;
}
开发者ID:AK101111，项目名称:linux，代码行数:72，代码来源:mc-sys.c


示例10: custom_uart_driver_probe

int custom_uart_driver_probe(struct platform_device *pdev)
{
//		uart_am33x_port up;
//		int ret;
//		int irq;
        void __iomem *membase;
		struct resource  *mem_res;
		void __iomem *cm_per;
		unsigned int uart5_clkctrl=0;

       cm_per = ioremap(CM_PER_START_ADDR, CM_PER_SIZE);
	   if(!cm_per)
	   {
			printk (KERN_ERR "HI: ERROR: Failed to remap memory for CM_PER.\n");
			return 0;
	   }
		uart5_clkctrl = ioread32(cm_per+CM_PER_UART4_CLKCTRL); 
		printk("\n uart5_clkctrl=%x\n",uart5_clkctrl);
		iowrite32(0x02,cm_per+CM_PER_UART4_CLKCTRL);    //Enable the clock for UART5 
		uart5_clkctrl = ioread32(cm_per+CM_PER_UART4_CLKCTRL); 
		printk("\n uart5_clkctrl=%x\n",uart5_clkctrl);
	    iounmap(cm_per);

		printk("in probe: of_get_uart_port_info\n");


        mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        if (!mem_res)
     {
                dev_err(&pdev->dev, "no mem resource?\n");
                return -ENODEV;
     }
       if (!devm_request_mem_region(&pdev->dev, mem_res->start, resource_size(mem_res),
                                pdev->dev.driver->name)) {
                dev_err(&pdev->dev, "memory region already claimed\n");
                return -EBUSY;
        }
        membase = devm_ioremap_nocache(&pdev->dev, mem_res->start,resource_size(mem_res));
        if (!membase)
            return -ENODEV;


	printk("LCR=%x\n",ioread16(membase+0X0C));
	iowrite16(0x00BF,membase+0X0C);
	printk("LCR=%x\n",ioread16(membase+0X0C));

	iowrite16( (ioread16(membase+0X0C))^0x01,membase+0X0C);
	printk("LCR=%x\n",ioread16(membase+0X0C));

	{
//	unsigned int reg_val=0;
	printk("MDR1=%x\n",ioread32(membase+0X20));
	iowrite32((ioread32(membase+0X20))^0x01,membase+0X20); // FCR : TX_FIFO_CLEAR,RX_FIFO_CLEAR,FIFO_1byte
	printk("MDR1=%x\n",ioread32(membase+0X20));
	} 

return 0;
}
开发者ID:FourierSignal，项目名称:UART_driver，代码行数:58，代码来源:custom_uart_driver.c


示例11: au1xac97c_drvprobe

static int au1xac97c_drvprobe(struct platform_device *pdev)
{
	int ret;
	struct resource *iores, *dmares;
	struct au1xpsc_audio_data *ctx;

	ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
	if (!ctx)
		return -ENOMEM;

	mutex_init(&ctx->lock);

	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!iores)
		return -ENODEV;

	if (!devm_request_mem_region(&pdev->dev, iores->start,
				     resource_size(iores),
				     pdev->name))
		return -EBUSY;

	ctx->mmio = devm_ioremap_nocache(&pdev->dev, iores->start,
					 resource_size(iores));
	if (!ctx->mmio)
		return -EBUSY;

	dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
	if (!dmares)
		return -EBUSY;
	ctx->dmaids[SNDRV_PCM_STREAM_PLAYBACK] = dmares->start;

	dmares = platform_get_resource(pdev, IORESOURCE_DMA, 1);
	if (!dmares)
		return -EBUSY;
	ctx->dmaids[SNDRV_PCM_STREAM_CAPTURE] = dmares->start;

	/* switch it on */
	WR(ctx, AC97_ENABLE, EN_D | EN_CE);
	WR(ctx, AC97_ENABLE, EN_CE);

	ctx->cfg = CFG_RC(3) | CFG_XS(3);
	WR(ctx, AC97_CONFIG, ctx->cfg);

	platform_set_drvdata(pdev, ctx);

	ret = snd_soc_set_ac97_ops(&ac97c_bus_ops);
	if (ret)
		return ret;

	ret = snd_soc_register_component(&pdev->dev, &au1xac97c_component,
					 &au1xac97c_dai_driver, 1);
	if (ret)
		return ret;

	ac97c_workdata = ctx;
	return 0;
}
开发者ID:020gzh，项目名称:linux，代码行数:57，代码来源:ac97c.c


示例12: bcm63xx_rng_probe

static int bcm63xx_rng_probe(struct platform_device *pdev)
{
	struct resource *r;
	struct clk *clk;
	int ret;
	struct bcm63xx_rng_priv *priv;
	struct hwrng *rng;

	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!r) {
		dev_err(&pdev->dev, "no iomem resource\n");
		return -ENXIO;
	}

	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->rng.name = pdev->name;
	priv->rng.init = bcm63xx_rng_init;
	priv->rng.cleanup = bcm63xx_rng_cleanup;
	prov->rng.data_present = bcm63xx_rng_data_present;
	priv->rng.data_read = bcm63xx_rng_data_read;

	priv->clk = devm_clk_get(&pdev->dev, "ipsec");
	if (IS_ERR(priv->clk)) {
		error = PTR_ERR(priv->clk);
		dev_err(&pdev->dev, "no clock for device: %d\n", error);
		return error;
	}

	if (!devm_request_mem_region(&pdev->dev, r->start,
					resource_size(r), pdev->name)) {
		dev_err(&pdev->dev, "request mem failed");
		return -EBUSY;
	}

	priv->regs = devm_ioremap_nocache(&pdev->dev, r->start,
					resource_size(r));
	if (!priv->regs) {
		dev_err(&pdev->dev, "ioremap failed");
		return -ENOMEM;
	}

	error = devm_hwrng_register(&pdev->dev, &priv->rng);
	if (error) {
		dev_err(&pdev->dev, "failed to register rng device: %d\n",
			error);
		return error;
	}

	dev_info(&pdev->dev, "registered RNG driver\n");

	return 0;
}
开发者ID:Abhi1919，项目名称:ath，代码行数:55，代码来源:bcm63xx-rng.c


示例13: imx2_wdt_probe

static int __init imx2_wdt_probe(struct platform_device *pdev)
{
	int ret;
	int res_size;
	struct resource *res;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "can't get device resources\n");
		return -ENODEV;
	}

	res_size = resource_size(res);
	if (!devm_request_mem_region(&pdev->dev, res->start, res_size,
		res->name)) {
		dev_err(&pdev->dev, "can't allocate %d bytes at %d address\n",
			res_size, res->start);
		return -ENOMEM;
	}

	imx2_wdt.base = devm_ioremap_nocache(&pdev->dev, res->start, res_size);
	if (!imx2_wdt.base) {
		dev_err(&pdev->dev, "ioremap failed\n");
		return -ENOMEM;
	}

	imx2_wdt.clk = clk_get(&pdev->dev, NULL);
	if (IS_ERR(imx2_wdt.clk)) {
		dev_err(&pdev->dev, "can't get Watchdog clock\n");
		return PTR_ERR(imx2_wdt.clk);
	}

	imx2_wdt.timeout = clamp_t(unsigned, timeout, 1, IMX2_WDT_MAX_TIME);
	if (imx2_wdt.timeout != timeout)
		dev_warn(&pdev->dev, "Initial timeout out of range! "
			"Clamped from %u to %u\n", timeout, imx2_wdt.timeout);

	setup_timer(&imx2_wdt.timer, imx2_wdt_timer_ping, 0);

	imx2_wdt_miscdev.parent = &pdev->dev;
	ret = misc_register(&imx2_wdt_miscdev);
	if (ret)
		goto fail;

	dev_info(&pdev->dev,
		"IMX2+ Watchdog Timer enabled. timeout=%ds (nowayout=%d)\n",
						imx2_wdt.timeout, nowayout);
	return 0;

fail:
	imx2_wdt_miscdev.parent = NULL;
	clk_put(imx2_wdt.clk);
	return ret;
}
开发者ID:303750856，项目名称:linux-3.1，代码行数:54，代码来源:imx2_wdt.c


示例14: spdif_out_probe

static int spdif_out_probe(struct platform_device *pdev)
{
	struct spdif_out_dev *host;
	struct spear_spdif_platform_data *pdata;
	struct resource *res;
	int ret;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res)
		return -EINVAL;

	if (!devm_request_mem_region(&pdev->dev, res->start,
				resource_size(res), pdev->name)) {
		dev_warn(&pdev->dev, "Failed to get memory resourse\n");
		return -ENOENT;
	}

	host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL);
	if (!host) {
		dev_warn(&pdev->dev, "kzalloc fail\n");
		return -ENOMEM;
	}

	host->io_base = devm_ioremap(&pdev->dev, res->start,
				resource_size(res));
	if (!host->io_base) {
		dev_warn(&pdev->dev, "ioremap failed\n");
		return -ENOMEM;
	}

	host->clk = clk_get(&pdev->dev, NULL);
	if (IS_ERR(host->clk))
		return PTR_ERR(host->clk);

	pdata = dev_get_platdata(&pdev->dev);

	host->dma_params.data = pdata->dma_params;
	host->dma_params.addr = res->start + SPDIF_OUT_FIFO_DATA;
	host->dma_params.max_burst = 16;
	host->dma_params.addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
	host->dma_params.filter = pdata->filter;

	dev_set_drvdata(&pdev->dev, host);

	ret = snd_soc_register_component(&pdev->dev, &spdif_out_component,
					 &spdif_out_dai, 1);
	if (ret != 0) {
		clk_put(host->clk);
		return ret;
	}

	return 0;
}
开发者ID:AD5GB，项目名称:kernel_n5_3.10-experimental，代码行数:53，代码来源:spdif_out.c


示例15: sp805_wdt_probe

static int __devinit
sp805_wdt_probe(struct amba_device *adev, const struct amba_id *id)
{
	int ret = 0;

	if (!devm_request_mem_region(&adev->dev, adev->res.start,
				resource_size(&adev->res), "sp805_wdt")) {
		dev_warn(&adev->dev, "Failed to get memory region resource\n");
		ret = -ENOENT;
		goto err;
	}

	wdt = devm_kzalloc(&adev->dev, sizeof(*wdt), GFP_KERNEL);
	if (!wdt) {
		dev_warn(&adev->dev, "Kzalloc failed\n");
		ret = -ENOMEM;
		goto err;
	}

	wdt->base = devm_ioremap(&adev->dev, adev->res.start,
			resource_size(&adev->res));
	if (!wdt->base) {
		ret = -ENOMEM;
		dev_warn(&adev->dev, "ioremap fail\n");
		goto err;
	}

	wdt->clk = clk_get(&adev->dev, NULL);
	if (IS_ERR(wdt->clk)) {
		dev_warn(&adev->dev, "Clock not found\n");
		ret = PTR_ERR(wdt->clk);
		goto err;
	}

	wdt->adev = adev;
	spin_lock_init(&wdt->lock);
	wdt_setload(DEFAULT_TIMEOUT);

	ret = misc_register(&sp805_wdt_miscdev);
	if (ret < 0) {
		dev_warn(&adev->dev, "cannot register misc device\n");
		goto err_misc_register;
	}

	dev_info(&adev->dev, "registration successful\n");
	return 0;

err_misc_register:
	clk_put(wdt->clk);
err:
	dev_err(&adev->dev, "Probe Failed!!!\n");
	return ret;
}
开发者ID:romanbb，项目名称:android_kernel_lge_d851，代码行数:53，代码来源:sp805_wdt.c


示例16: virtio_mmio_probe

static int __devinit virtio_mmio_probe(struct platform_device *pdev)
{
	struct virtio_mmio_device *vm_dev;
	struct resource *mem;
	unsigned long magic;

	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!mem)
		return -EINVAL;

	if (!devm_request_mem_region(&pdev->dev, mem->start,
			resource_size(mem), pdev->name))
		return -EBUSY;

	vm_dev = devm_kzalloc(&pdev->dev, sizeof(*vm_dev), GFP_KERNEL);
	if (!vm_dev)
		return  -ENOMEM;

	vm_dev->vdev.dev.parent = &pdev->dev;
	vm_dev->vdev.config = &virtio_mmio_config_ops;
	vm_dev->pdev = pdev;
	INIT_LIST_HEAD(&vm_dev->virtqueues);
	spin_lock_init(&vm_dev->lock);

	vm_dev->base = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
	if (vm_dev->base == NULL)
		return -EFAULT;

	/* Check magic value */
	magic = readl(vm_dev->base + VIRTIO_MMIO_MAGIC_VALUE);
	if (memcmp(&magic, "virt", 4) != 0) {
		dev_warn(&pdev->dev, "Wrong magic value 0x%08lx!\n", magic);
		return -ENODEV;
	}

	/* Check device version */
	vm_dev->version = readl(vm_dev->base + VIRTIO_MMIO_VERSION);
	if (vm_dev->version != 1) {
		dev_err(&pdev->dev, "Version %ld not supported!\n",
				vm_dev->version);
		return -ENXIO;
	}

	vm_dev->vdev.id.device = readl(vm_dev->base + VIRTIO_MMIO_DEVICE_ID);
	vm_dev->vdev.id.vendor = readl(vm_dev->base + VIRTIO_MMIO_VENDOR_ID);

	writel(PAGE_SIZE, vm_dev->base + VIRTIO_MMIO_GUEST_PAGE_SIZE);

	platform_set_drvdata(pdev, vm_dev);

	return register_virtio_device(&vm_dev->vdev);
}
开发者ID:ashang，项目名称:xpenology-3.x，代码行数:52，代码来源:virtio_mmio.c


示例17: s5p_aes_probe

static int s5p_aes_probe(struct platform_device *pdev)
{
	int                 i, j, err = -ENODEV;
	struct s5p_aes_dev *pdata;
	struct device      *dev = &pdev->dev;
	struct resource    *res;

	if (s5p_dev)
		return -EEXIST;

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res)
		return -ENODEV;

	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
	if (!pdata)
		return -ENOMEM;

	if (!devm_request_mem_region(dev, res->start,
				     resource_size(res), pdev->name))
		return -EBUSY;

	pdata->clk = clk_get(dev, "secss");
	if (IS_ERR(pdata->clk)) {
		dev_err(dev, "failed to find secss clock source\n");
		return -ENOENT;
	}

	clk_enable(pdata->clk);

	spin_lock_init(&pdata->lock);
	pdata->ioaddr = devm_ioremap(dev, res->start,
				     resource_size(res));

	pdata->irq_hash = platform_get_irq_byname(pdev, "hash");
	if (pdata->irq_hash < 0) {
		err = pdata->irq_hash;
		dev_warn(dev, "hash interrupt is not available.\n");
		goto err_irq;
	}
	err = devm_request_irq(dev, pdata->irq_hash, s5p_aes_interrupt,
			       IRQF_SHARED, pdev->name, pdev);
	if (err < 0) {
		dev_warn(dev, "hash interrupt is not available.\n");
		goto err_irq;
	}

	pdata->irq_fc = platform_get_irq_byname(pdev, "feed control");
	if (pdata->irq_fc < 0) {
		err = pdata->irq_fc;
		dev_warn(dev, "feed control interrupt is not ava
开发者ID:Huanglihan，项目名称:linux，代码行数:51，代码来源:s5p-sss.c


示例18: picoxcell_trng_probe

static int picoxcell_trng_probe(struct platform_device *pdev)
{
    int ret;
    struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);

    if (!mem) {
        dev_warn(&pdev->dev, "no memory resource\n");
        return -ENOMEM;
    }

    if (!devm_request_mem_region(&pdev->dev, mem->start, resource_size(mem),
                                 "picoxcell_trng")) {
        dev_warn(&pdev->dev, "unable to request io mem\n");
        return -EBUSY;
    }

    rng_base = devm_ioremap(&pdev->dev, mem->start, resource_size(mem));
    if (!rng_base) {
        dev_warn(&pdev->dev, "unable to remap io mem\n");
        return -ENOMEM;
    }

    rng_clk = clk_get(&pdev->dev, NULL);
    if (IS_ERR(rng_clk)) {
        dev_warn(&pdev->dev, "no clk\n");
        return PTR_ERR(rng_clk);
    }

    ret = clk_enable(rng_clk);
    if (ret) {
        dev_warn(&pdev->dev, "unable to enable clk\n");
        goto err_enable;
    }

    picoxcell_trng_start();
    ret = hwrng_register(&picoxcell_trng);
    if (ret)
        goto err_register;

    rng_dev = &pdev->dev;
    dev_info(&pdev->dev, "pixoxcell random number generator active\n");

    return 0;

err_register:
    clk_disable(rng_clk);
err_enable:
    clk_put(rng_clk);

    return ret;
}
开发者ID:wx1183618058，项目名称:m463，代码行数:51，代码来源:picoxcell-rng.c


示例19: gpio_apu2_probe

static int gpio_apu2_probe (struct platform_device *dev)
{
	int ret = 0;
	int i;
	struct pci_dev *pci_dev = NULL;

	/* Match the PCI device */
	for_each_pci_dev (pci_dev) {
		if (pci_match_id (gpio_apu2_pci_tbl, pci_dev) != NULL) {
			gpio_apu2_pci = pci_dev;
			break;
		}
	}

	if (!gpio_apu2_pci)
		return -ENODEV;

	pr_info ("%s: PCI Revision ID: 0x%x\n", DEVNAME, gpio_apu2_pci->revision);

	/* Determine type of southbridge chipset */
	if (gpio_apu2_pci->revision < 0x40) {
		return -EACCES;
	}

	/* Request memory region for GPIO's */
	if (!devm_request_mem_region (&dev->dev, FCH_GPIO_BASE,
		FCH_GPIO_SIZE, DEVNAME)){
		pr_err ("%s: request GPIO mem region failed\n", DEVNAME);
		return -ENXIO;
	}

	/* Map IO's for GPIO's */
	for (i = 0; i < APU_NUM_GPIO; i++) {
		gpio_addr[i] = devm_ioremap (&dev->dev,
			FCH_GPIO_BASE + (gpio_offset[i] * sizeof (u32)), sizeof (u32));
		if (!gpio_addr[i]) {
			pr_err ("%s: map GPIO%d address failed\n", DEVNAME, gpio_offset[i]);
			return -ENXIO;
		}
	}

	gpio_apu2_chip.dev = &dev->dev;
	ret = gpiochip_add (&gpio_apu2_chip);
	if (ret) {
		pr_err ("%s: adding gpiochip failed\n", DEVNAME);
	}

	return ret;
}
开发者ID:DPini，项目名称:LEDE-source，代码行数:49，代码来源:leds-apu2.c


示例20: stm_gpio_irqmux_probe

static int __devinit stm_gpio_irqmux_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct stm_plat_pio_irqmux_data *plat_data = dev->platform_data;
	struct stm_gpio_irqmux *irqmux;
	struct resource *memory;
	int irq;
	int port_no;

	BUG_ON(!plat_data);

	irqmux = devm_kzalloc(dev, sizeof(*irqmux), GFP_KERNEL);
	if (!irqmux)
		return -ENOMEM;

	memory = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	irq = platform_get_irq(pdev, 0);
	if (!memory || irq < 0)
		return -EINVAL;

	if (!devm_request_mem_region(dev, memory->start,
			memory->end - memory->start + 1, pdev->name))
		return -EBUSY;

	irqmux->base = devm_ioremap_nocache(dev, memory->start,
			memory->end - memory->start + 1);
	if (!irqmux->base)
		return -ENOMEM;

	irqmux->port_first = plat_data->port_first;

	set_irq_chained_handler(irq, stm_gpio_irqmux_handler);
	set_irq_data(irq, irqmux);

	for (port_no = irqmux->port_first;
			port_no < irqmux->port_first + plat_data->ports_num;
			port_no++) {
		BUG_ON(port_no >= stm_gpio_num);

		if (stm_gpio_irq_init(port_no) != 0) {
			printk(KERN_ERR "stm_gpio: Failed to init gpio "
					"interrupt for port %d!\n", port_no);
			return -EINVAL;
		}
	}

	return 0;
}
开发者ID:coolshou，项目名称:kernel-pdk7105，代码行数:48，代码来源:gpio.c



注：本文中的devm_request_mem_region函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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