C++ pm_runtime_get_sync函数代码示例

static ssize_t get_idac_debugfs_read(struct file *filp, char __user *buf,
		size_t count, loff_t *ppos)
{
	struct cyttsp5_device_access_debugfs_data *data = filp->private_data;
	struct cyttsp5_device_access_data *dad = data->dad;
	struct device *dev = dad->dev;
	int status = STATUS_FAIL;
	u8 cmd_status = 0;
	u8 data_format = 0;
	u16 act_length = 0;
	int length = 0;
	int rc;

	if (*ppos)
		goto exit;

	mutex_lock(&dad->sysfs_lock);

	pm_runtime_get_sync(dev);

	rc = cmd->request_exclusive(dev, CY_REQUEST_EXCLUSIVE_TIMEOUT);
	if (rc < 0) {
		dev_err(dev, "%s: Error on request exclusive r=%d\n",
				__func__, rc);
		goto put_pm_runtime;
	}

	rc = cyttsp5_suspend_scan_cmd_(dev);
	if (rc < 0) {
		dev_err(dev, "%s: Error on suspend scan r=%d\n",
				__func__, rc);
		goto release_exclusive;
	}

	rc = cyttsp5_get_data_structure_cmd_(dev, 0, PIP_CMD_MAX_LENGTH,
			dad->get_idac_data_id, &cmd_status, &data_format,
			&act_length, &dad->ic_buf[5]);
	if (rc < 0) {
		dev_err(dev, "%s: Error on get data structure r=%d\n",
				__func__, rc);
		goto resume_scan;
	}

	dad->ic_buf[0] = cmd_status;
	dad->ic_buf[1] = dad->get_idac_data_id;
	dad->ic_buf[2] = LOW_BYTE(act_length);
	dad->ic_buf[3] = HI_BYTE(act_length);
	dad->ic_buf[4] = data_format;

	length = 5 + act_length;

	status = STATUS_SUCCESS;

resume_scan:
	cyttsp5_resume_scan_cmd_(dev);

release_exclusive:
	cmd->release_exclusive(dev);

put_pm_runtime:
	pm_runtime_put(dev);

	if (status == STATUS_FAIL)
		length = 0;

	data->pr_buf_len = prepare_print_buffer(status, dad->ic_buf, length,
			data->pr_buf, sizeof(data->pr_buf));

	mutex_unlock(&dad->sysfs_lock);

exit:
	return simple_read_from_buffer(buf, count, ppos, data->pr_buf,
			data->pr_buf_len);
}

static int dwc3_omap_probe(struct platform_device *pdev)
{
	struct device_node	*node = pdev->dev.of_node;

	struct dwc3_omap	*omap;
	struct resource		*res;
	struct device		*dev = &pdev->dev;
	struct regulator	*vbus_reg = NULL;

	int			ret;
	int			irq;

	u32			reg;

	void __iomem		*base;

	if (!node) {
		dev_err(dev, "device node not found\n");
		return -EINVAL;
	}

	omap = devm_kzalloc(dev, sizeof(*omap), GFP_KERNEL);
	if (!omap) {
		dev_err(dev, "not enough memory\n");
		return -ENOMEM;
	}

	platform_set_drvdata(pdev, omap);

	irq = platform_get_irq(pdev, 0);
	if (irq < 0) {
		dev_err(dev, "missing IRQ resource\n");
		return -EINVAL;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	base = devm_ioremap_resource(dev, res);
	if (IS_ERR(base))
		return PTR_ERR(base);

	if (of_property_read_bool(node, "vbus-supply")) {
		vbus_reg = devm_regulator_get(dev, "vbus");
		if (IS_ERR(vbus_reg)) {
			dev_err(dev, "vbus init failed\n");
			return PTR_ERR(vbus_reg);
		}
	}

	omap->dev	= dev;
	omap->irq	= irq;
	omap->base	= base;
	omap->vbus_reg	= vbus_reg;
	dev->dma_mask	= &dwc3_omap_dma_mask;

	pm_runtime_enable(dev);
	ret = pm_runtime_get_sync(dev);
	if (ret < 0) {
		dev_err(dev, "get_sync failed with err %d\n", ret);
		goto err0;
	}

	dwc3_omap_map_offset(omap);
	dwc3_omap_set_utmi_mode(omap);

	/* check the DMA Status */
	reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG);
	omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE);

	ret = devm_request_irq(dev, omap->irq, dwc3_omap_interrupt, 0,
			"dwc3-omap", omap);
	if (ret) {
		dev_err(dev, "failed to request IRQ #%d --> %d\n",
				omap->irq, ret);
		goto err1;
	}

	dwc3_omap_enable_irqs(omap);

	ret = dwc3_omap_extcon_register(omap);
	if (ret < 0)
		goto err2;

	ret = of_platform_populate(node, NULL, NULL, dev);
	if (ret) {
		dev_err(&pdev->dev, "failed to create dwc3 core\n");
		goto err3;
	}

	return 0;

err3:
	if (omap->extcon_vbus_dev.edev)
		extcon_unregister_interest(&omap->extcon_vbus_dev);
	if (omap->extcon_id_dev.edev)
		extcon_unregister_interest(&omap->extcon_id_dev);

err2:
	dwc3_omap_disable_irqs(omap);

err1:
//.........这里部分代码省略.........

static int __devinit ti_tscadc_probe(struct platform_device *pdev)
{
	struct ti_tscadc_dev	*tscadc;
	struct resource		*res;
	struct clk		*clk;
	struct mfd_tscadc_board	*pdata = pdev->dev.platform_data;
	struct mfd_cell		*cell;
	int			err, ctrl, children = 0;
	int			clk_value, clock_rate;
	int			tsc_wires = 0, adc_channels = 0, total_channels;

	if (!pdata) {
		dev_err(&pdev->dev, "Could not find platform data\n");
		return -EINVAL;
	}

	if (pdata->adc_init)
		adc_channels = pdata->adc_init->adc_channels;

	if (pdata->tsc_init)
		tsc_wires = pdata->tsc_init->wires;

	total_channels = tsc_wires + adc_channels;

	if (total_channels > 8) {
		dev_err(&pdev->dev, "Number of i/p channels more than 8\n");
		return -EINVAL;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	if (!res) {
		dev_err(&pdev->dev, "no memory resource defined.\n");
		return -EINVAL;
	}

	/* Allocate memory for device */
	tscadc = kzalloc(sizeof(struct ti_tscadc_dev), GFP_KERNEL);
	if (!tscadc) {
		dev_err(&pdev->dev, "failed to allocate memory.\n");
		return -ENOMEM;
	}

	res = request_mem_region(res->start, resource_size(res),
			pdev->name);
	if (!res) {
		dev_err(&pdev->dev, "failed to reserve registers.\n");
		err = -EBUSY;
		goto err_free_mem;
	}

	tscadc->tscadc_base = ioremap(res->start, resource_size(res));
	if (!tscadc->tscadc_base) {
		dev_err(&pdev->dev, "failed to map registers.\n");
		err = -ENOMEM;
		goto err_release_mem;
	}

	tscadc->irq = platform_get_irq(pdev, 0);
	if (tscadc->irq < 0) {
		dev_err(&pdev->dev, "no irq ID is specified.\n");
		return -ENODEV;
	}

	tscadc->dev = &pdev->dev;

	pm_runtime_enable(&pdev->dev);
	pm_runtime_get_sync(&pdev->dev);

	/*
	 * The TSC_ADC_Subsystem has 2 clock domains
	 * OCP_CLK and ADC_CLK.
	 * The ADC clock is expected to run at target of 3MHz,
	 * and expected to capture 12-bit data at a rate of 200 KSPS.
	 * The TSC_ADC_SS controller design assumes the OCP clock is
	 * at least 6x faster than the ADC clock.
	 */
	clk = clk_get(&pdev->dev, "adc_tsc_fck");
	if (IS_ERR(clk)) {
		dev_err(&pdev->dev, "failed to get TSC fck\n");
		err = PTR_ERR(clk);
		goto err_fail;
	}
	clock_rate = clk_get_rate(clk);
	clk_put(clk);
	clk_value = clock_rate / ADC_CLK;
	/* TSCADC_CLKDIV needs to be configured to the value minus 1 */
	clk_value = clk_value - 1;
	tscadc_writel(tscadc, TSCADC_REG_CLKDIV, clk_value);

	/* Set the control register bits */
	ctrl = TSCADC_CNTRLREG_STEPCONFIGWRT |
			TSCADC_CNTRLREG_STEPID;
	if (pdata->tsc_init)
		ctrl |= TSCADC_CNTRLREG_4WIRE |
				TSCADC_CNTRLREG_TSCENB;
	tscadc_writel(tscadc, TSCADC_REG_CTRL, ctrl);

	/* Set register bits for Idle Config Mode */
	if (pdata->tsc_init)
		tscadc_idle_config(tscadc);
//.........这里部分代码省略.........

/*
 ****************************************************************************
 * - Device operation such as;
 *   probe, init/exit, remove
 ****************************************************************************
 */
static int __devinit lm3561_probe(struct i2c_client *client,
	  const struct i2c_device_id *id)
{
	struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
	struct lm3561_platform_data *pdata = client->dev.platform_data;
	struct lm3561_drv_data *data;
	int result;

	dev_dbg(&client->dev, "%s\n", __func__);

	if (!pdata) {
		dev_err(&client->dev,
			"%s(): failed during init",
				__func__);
		return -EINVAL;
	}

	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) {
		dev_err(&client->dev,
			"%s(): failed during i2c_check_functionality",
			__func__);
		return -EIO;
	}

	data = kzalloc(sizeof(*data), GFP_KERNEL);
	if (!data) {
		dev_err(&client->dev, "%s(): failed during kzalloc", __func__);
		return -ENOMEM;
	}

	dev_set_drvdata(&client->dev, data);
	data->client = client;
	data->led_nums = 1;
	data->torch_current_shift = 0;
	data->flash_current_shift = 0;
	if (pdata->current_limit >= 1500000) {
		data->reg_flash_duration_limit =
			LM3561_FLASH_DURATION_CL_1500MA;
	} else if (pdata->current_limit >= 1000000) {
		data->reg_flash_duration_limit =
			LM3561_FLASH_DURATION_CL_1000MA;
	} else {
		/* current_limit > 1500000uA || current_limit < 1000000uA */
		dev_err(&data->client->dev,
			"%s(): current_limit(%luuA) is invalid\n",
			__func__, pdata->current_limit);
		result = -EINVAL;
		goto err_init;
	}
	mutex_init(&data->lock);
	pm_runtime_enable(&client->dev);
	pm_suspend_ignore_children(&client->dev, true);
	result = pm_runtime_get_sync(&client->dev);
	if (result < 0)
		goto err_setup;
	result = lm3561_chip_init(data, pdata);
	if (result) {
		dev_err(&client->dev, "%s:chip init error\n", __func__);
		goto err_chip_init;
	}
	result = lm3561_create_sysfs_interfaces(&client->dev);
	if (result) {
		dev_err(&data->client->dev,
			"%s(): create sysfs failed",
				__func__);
		goto err_chip_init;
	}
	pm_runtime_set_autosuspend_delay(&client->dev, autosuspend_delay_ms);
	pm_runtime_use_autosuspend(&client->dev);
	pm_runtime_mark_last_busy(&data->client->dev);
	pm_runtime_put_autosuspend(&data->client->dev);
	dev_info(&data->client->dev, "%s: loaded\n", __func__);
	return 0;

err_chip_init:
	pm_runtime_suspend(&client->dev);
err_setup:
	pm_runtime_disable(&client->dev);
	if (pdata->platform_init)
		pdata->platform_init(&client->dev, 0);
err_init:
	dev_set_drvdata(&client->dev, NULL);
	kfree(data);
	dev_err(&client->dev,
		"%s: failed with code %d.\n", __func__, result);

	return result;
}

//.........这里部分代码省略.........
	/*
	 * The V4L2 specification clearly documents the colorspace fields
	 * as being set by drivers for capture devices. Using the values
	 * supplied by userspace thus wouldn't comply with the API. Until
	 * the API is updated force fixed vaules.
	 */
	pix->colorspace = RVIN_DEFAULT_COLORSPACE;
	pix->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix->colorspace);
	pix->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix->colorspace);
	pix->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, pix->colorspace,
							  pix->ycbcr_enc);

	rvin_format_align(vin, pix);
}

static int rvin_mc_try_fmt_vid_cap(struct file *file, void *priv,
				   struct v4l2_format *f)
{
	struct rvin_dev *vin = video_drvdata(file);

	rvin_mc_try_format(vin, &f->fmt.pix);

	return 0;
}

static int rvin_mc_s_fmt_vid_cap(struct file *file, void *priv,
				 struct v4l2_format *f)
{
	struct rvin_dev *vin = video_drvdata(file);

	if (vb2_is_busy(&vin->queue))
		return -EBUSY;

	rvin_mc_try_format(vin, &f->fmt.pix);

	vin->format = f->fmt.pix;

	vin->crop.top = 0;
	vin->crop.left = 0;
	vin->crop.width = vin->format.width;
	vin->crop.height = vin->format.height;
	vin->compose = vin->crop;

	return 0;
}

static int rvin_mc_enum_input(struct file *file, void *priv,
			      struct v4l2_input *i)
{
	if (i->index != 0)
		return -EINVAL;

	i->type = V4L2_INPUT_TYPE_CAMERA;
	strscpy(i->name, "Camera", sizeof(i->name));

	return 0;
}

static const struct v4l2_ioctl_ops rvin_mc_ioctl_ops = {
	.vidioc_querycap		= rvin_querycap,
	.vidioc_try_fmt_vid_cap		= rvin_mc_try_fmt_vid_cap,
	.vidioc_g_fmt_vid_cap		= rvin_g_fmt_vid_cap,
	.vidioc_s_fmt_vid_cap		= rvin_mc_s_fmt_vid_cap,
	.vidioc_enum_fmt_vid_cap	= rvin_enum_fmt_vid_cap,

	.vidioc_enum_input		= rvin_mc_enum_input,
	.vidioc_g_input			= rvin_g_input,
	.vidioc_s_input			= rvin_s_input,

	.vidioc_reqbufs			= vb2_ioctl_reqbufs,
	.vidioc_create_bufs		= vb2_ioctl_create_bufs,
	.vidioc_querybuf		= vb2_ioctl_querybuf,
	.vidioc_qbuf			= vb2_ioctl_qbuf,
	.vidioc_dqbuf			= vb2_ioctl_dqbuf,
	.vidioc_expbuf			= vb2_ioctl_expbuf,
	.vidioc_prepare_buf		= vb2_ioctl_prepare_buf,
	.vidioc_streamon		= vb2_ioctl_streamon,
	.vidioc_streamoff		= vb2_ioctl_streamoff,

	.vidioc_log_status		= v4l2_ctrl_log_status,
	.vidioc_subscribe_event		= rvin_subscribe_event,
	.vidioc_unsubscribe_event	= v4l2_event_unsubscribe,
};

/* -----------------------------------------------------------------------------
 * File Operations
 */

static int rvin_power_on(struct rvin_dev *vin)
{
	int ret;
	struct v4l2_subdev *sd = vin_to_source(vin);

	pm_runtime_get_sync(vin->v4l2_dev.dev);

	ret = v4l2_subdev_call(sd, core, s_power, 1);
	if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
		return ret;
	return 0;
}

void scsi_autopm_get_target(struct scsi_target *starget)
{
	pm_runtime_get_sync(&starget->dev);
}

/**
 * spi_mem_exec_op() - Execute a memory operation
 * @mem: the SPI memory
 * @op: the memory operation to execute
 *
 * Executes a memory operation.
 *
 * This function first checks that @op is supported and then tries to execute
 * it.
 *
 * Return: 0 in case of success, a negative error code otherwise.
 */
int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op)
{
	unsigned int tmpbufsize, xferpos = 0, totalxferlen = 0;
	struct spi_controller *ctlr = mem->spi->controller;
	struct spi_transfer xfers[4] = { };
	struct spi_message msg;
	u8 *tmpbuf;
	int ret;

	ret = spi_mem_check_op(op);
	if (ret)
		return ret;

	if (!spi_mem_internal_supports_op(mem, op))
		return -ENOTSUPP;

	if (ctlr->mem_ops) {
		/*
		 * Flush the message queue before executing our SPI memory
		 * operation to prevent preemption of regular SPI transfers.
		 */
		spi_flush_queue(ctlr);

		if (ctlr->auto_runtime_pm) {
			ret = pm_runtime_get_sync(ctlr->dev.parent);
			if (ret < 0) {
				dev_err(&ctlr->dev,
					"Failed to power device: %d\n",
					ret);
				return ret;
			}
		}

		mutex_lock(&ctlr->bus_lock_mutex);
		mutex_lock(&ctlr->io_mutex);
		ret = ctlr->mem_ops->exec_op(mem, op);
		mutex_unlock(&ctlr->io_mutex);
		mutex_unlock(&ctlr->bus_lock_mutex);

		if (ctlr->auto_runtime_pm)
			pm_runtime_put(ctlr->dev.parent);

		/*
		 * Some controllers only optimize specific paths (typically the
		 * read path) and expect the core to use the regular SPI
		 * interface in other cases.
		 */
		if (!ret || ret != -ENOTSUPP)
			return ret;
	}

	tmpbufsize = sizeof(op->cmd.opcode) + op->addr.nbytes +
		     op->dummy.nbytes;

	/*
	 * Allocate a buffer to transmit the CMD, ADDR cycles with kmalloc() so
	 * we're guaranteed that this buffer is DMA-able, as required by the
	 * SPI layer.
	 */
	tmpbuf = kzalloc(tmpbufsize, GFP_KERNEL | GFP_DMA);
	if (!tmpbuf)
		return -ENOMEM;

	spi_message_init(&msg);

	tmpbuf[0] = op->cmd.opcode;
	xfers[xferpos].tx_buf = tmpbuf;
	xfers[xferpos].len = sizeof(op->cmd.opcode);
	xfers[xferpos].tx_nbits = op->cmd.buswidth;
	spi_message_add_tail(&xfers[xferpos], &msg);
	xferpos++;
	totalxferlen++;

	if (op->addr.nbytes) {
		int i;

		for (i = 0; i < op->addr.nbytes; i++)
			tmpbuf[i + 1] = op->addr.val >>
					(8 * (op->addr.nbytes - i - 1));

		xfers[xferpos].tx_buf = tmpbuf + 1;
		xfers[xferpos].len = op->addr.nbytes;
		xfers[xferpos].tx_nbits = op->addr.buswidth;
		spi_message_add_tail(&xfers[xferpos], &msg);
		xferpos++;
		totalxferlen += op->addr.nbytes;
	}

static int s3c_camif_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct s3c_camif_plat_data *pdata = dev->platform_data;
	struct s3c_camif_drvdata *drvdata;
	struct camif_dev *camif;
	struct resource *mres;
	int ret = 0;

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

	spin_lock_init(&camif->slock);
	mutex_init(&camif->lock);

	camif->dev = dev;

	if (!pdata || !pdata->gpio_get || !pdata->gpio_put) {
		dev_err(dev, "wrong platform data\n");
		return -EINVAL;
	}

	camif->pdata = *pdata;
	drvdata = (void *)platform_get_device_id(pdev)->driver_data;
	camif->variant = drvdata->variant;

	mres = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	camif->io_base = devm_ioremap_resource(dev, mres);
	if (IS_ERR(camif->io_base))
		return PTR_ERR(camif->io_base);

	ret = camif_request_irqs(pdev, camif);
	if (ret < 0)
		return ret;

	ret = pdata->gpio_get();
	if (ret < 0)
		return ret;

	ret = s3c_camif_create_subdev(camif);
	if (ret < 0)
		goto err_sd;

	ret = camif_clk_get(camif);
	if (ret < 0)
		goto err_clk;

	platform_set_drvdata(pdev, camif);
	clk_set_rate(camif->clock[CLK_CAM],
			camif->pdata.sensor.clock_frequency);

	dev_info(dev, "sensor clock frequency: %lu\n",
		 clk_get_rate(camif->clock[CLK_CAM]));
	/*
	 * Set initial pixel format, resolution and crop rectangle.
	 * Must be done before a sensor subdev is registered as some
	 * settings are overrode with values from sensor subdev.
	 */
	s3c_camif_set_defaults(camif);

	pm_runtime_enable(dev);

	ret = pm_runtime_get_sync(dev);
	if (ret < 0)
		goto err_pm;

	ret = camif_media_dev_init(camif);
	if (ret < 0)
		goto err_alloc;

	ret = camif_register_sensor(camif);
	if (ret < 0)
		goto err_sens;

	ret = v4l2_device_register_subdev(&camif->v4l2_dev, &camif->subdev);
	if (ret < 0)
		goto err_sens;

	ret = v4l2_device_register_subdev_nodes(&camif->v4l2_dev);
	if (ret < 0)
		goto err_sens;

	ret = camif_register_video_nodes(camif);
	if (ret < 0)
		goto err_sens;

	ret = camif_create_media_links(camif);
	if (ret < 0)
		goto err_sens;

	ret = media_device_register(&camif->media_dev);
	if (ret < 0)
		goto err_sens;

	pm_runtime_put(dev);
	return 0;

err_sens:
//.........这里部分代码省略.........

static int dwc3_of_simple_probe(struct platform_device *pdev)
{
	struct dwc3_of_simple	*simple;
	struct device		*dev = &pdev->dev;
	struct device_node	*np = dev->of_node;

	int			ret;
	int			i;
	bool			shared_resets = false;

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

	platform_set_drvdata(pdev, simple);
	simple->dev = dev;

	/*
	 * Some controllers need to toggle the usb3-otg reset before trying to
	 * initialize the PHY, otherwise the PHY times out.
	 */
	if (of_device_is_compatible(np, "rockchip,rk3399-dwc3"))
		simple->need_reset = true;

	if (of_device_is_compatible(np, "amlogic,meson-axg-dwc3") ||
	    of_device_is_compatible(np, "amlogic,meson-gxl-dwc3")) {
		shared_resets = true;
		simple->pulse_resets = true;
	}

	simple->resets = of_reset_control_array_get(np, shared_resets, true);
	if (IS_ERR(simple->resets)) {
		ret = PTR_ERR(simple->resets);
		dev_err(dev, "failed to get device resets, err=%d\n", ret);
		return ret;
	}

	if (simple->pulse_resets) {
		ret = reset_control_reset(simple->resets);
		if (ret)
			goto err_resetc_put;
	} else {
		ret = reset_control_deassert(simple->resets);
		if (ret)
			goto err_resetc_put;
	}

	ret = dwc3_of_simple_clk_init(simple, of_count_phandle_with_args(np,
						"clocks", "#clock-cells"));
	if (ret)
		goto err_resetc_assert;

	ret = of_platform_populate(np, NULL, NULL, dev);
	if (ret) {
		for (i = 0; i < simple->num_clocks; i++) {
			clk_disable_unprepare(simple->clks[i]);
			clk_put(simple->clks[i]);
		}

		goto err_resetc_assert;
	}

	pm_runtime_set_active(dev);
	pm_runtime_enable(dev);
	pm_runtime_get_sync(dev);

	return 0;

err_resetc_assert:
	if (!simple->pulse_resets)
		reset_control_assert(simple->resets);

err_resetc_put:
	reset_control_put(simple->resets);
	return ret;
}

struct msm_kms *mdp5_kms_init(struct drm_device *dev)
{
	struct msm_drm_private *priv = dev->dev_private;
	struct platform_device *pdev;
	struct mdp5_kms *mdp5_kms;
	struct mdp5_cfg *config;
	struct msm_kms *kms;
	struct msm_gem_address_space *aspace;
	int irq, i, ret;

	/* priv->kms would have been populated by the MDP5 driver */
	kms = priv->kms;
	if (!kms)
		return NULL;

	mdp5_kms = to_mdp5_kms(to_mdp_kms(kms));

	mdp_kms_init(&mdp5_kms->base, &kms_funcs);

	pdev = mdp5_kms->pdev;

	irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
	if (irq < 0) {
		ret = irq;
		DRM_DEV_ERROR(&pdev->dev, "failed to get irq: %d\n", ret);
		goto fail;
	}

	kms->irq = irq;

	config = mdp5_cfg_get_config(mdp5_kms->cfg);

	/* make sure things are off before attaching iommu (bootloader could
	 * have left things on, in which case we'll start getting faults if
	 * we don't disable):
	 */
	pm_runtime_get_sync(&pdev->dev);
	for (i = 0; i < MDP5_INTF_NUM_MAX; i++) {
		if (mdp5_cfg_intf_is_virtual(config->hw->intf.connect[i]) ||
		    !config->hw->intf.base[i])
			continue;
		mdp5_write(mdp5_kms, REG_MDP5_INTF_TIMING_ENGINE_EN(i), 0);

		mdp5_write(mdp5_kms, REG_MDP5_INTF_FRAME_LINE_COUNT_EN(i), 0x3);
	}
	mdelay(16);

	if (config->platform.iommu) {
		aspace = msm_gem_address_space_create(&pdev->dev,
				config->platform.iommu, "mdp5");
		if (IS_ERR(aspace)) {
			ret = PTR_ERR(aspace);
			goto fail;
		}

		kms->aspace = aspace;

		ret = aspace->mmu->funcs->attach(aspace->mmu, iommu_ports,
				ARRAY_SIZE(iommu_ports));
		if (ret) {
			DRM_DEV_ERROR(&pdev->dev, "failed to attach iommu: %d\n",
				ret);
			goto fail;
		}
	} else {
		DRM_DEV_INFO(&pdev->dev,
			 "no iommu, fallback to phys contig buffers for scanout\n");
		aspace = NULL;
	}

	pm_runtime_put_sync(&pdev->dev);

	ret = modeset_init(mdp5_kms);
	if (ret) {
		DRM_DEV_ERROR(&pdev->dev, "modeset_init failed: %d\n", ret);
		goto fail;
	}

	dev->mode_config.min_width = 0;
	dev->mode_config.min_height = 0;
	dev->mode_config.max_width = 0xffff;
	dev->mode_config.max_height = 0xffff;

	dev->driver->get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos;
	dev->driver->get_scanout_position = mdp5_get_scanoutpos;
	dev->driver->get_vblank_counter = mdp5_get_vblank_counter;
	dev->max_vblank_count = 0xffffffff;
	dev->vblank_disable_immediate = true;

	return kms;
fail:
	if (kms)
		mdp5_kms_destroy(kms);
	return ERR_PTR(ret);
}

static int intc_irqpin_probe(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct renesas_intc_irqpin_config *pdata = dev->platform_data;
	const struct of_device_id *of_id;
	struct intc_irqpin_priv *p;
	struct intc_irqpin_iomem *i;
	struct resource *io[INTC_IRQPIN_REG_NR];
	struct resource *irq;
	struct irq_chip *irq_chip;
	void (*enable_fn)(struct irq_data *d);
	void (*disable_fn)(struct irq_data *d);
	const char *name = dev_name(dev);
	int ref_irq;
	int ret;
	int k;

	p = devm_kzalloc(dev, sizeof(*p), GFP_KERNEL);
	if (!p) {
		dev_err(dev, "failed to allocate driver data\n");
		return -ENOMEM;
	}

	/* deal with driver instance configuration */
	if (pdata) {
		memcpy(&p->config, pdata, sizeof(*pdata));
	} else {
		of_property_read_u32(dev->of_node, "sense-bitfield-width",
				     &p->config.sense_bitfield_width);
		p->config.control_parent = of_property_read_bool(dev->of_node,
								 "control-parent");
	}
	if (!p->config.sense_bitfield_width)
		p->config.sense_bitfield_width = 4; /* default to 4 bits */

	p->pdev = pdev;
	platform_set_drvdata(pdev, p);

	p->clk = devm_clk_get(dev, NULL);
	if (IS_ERR(p->clk)) {
		dev_warn(dev, "unable to get clock\n");
		p->clk = NULL;
	}

	pm_runtime_enable(dev);
	pm_runtime_get_sync(dev);

	/* get hold of register banks */
	memset(io, 0, sizeof(io));
	for (k = 0; k < INTC_IRQPIN_REG_NR; k++) {
		io[k] = platform_get_resource(pdev, IORESOURCE_MEM, k);
		if (!io[k] && k < INTC_IRQPIN_REG_NR_MANDATORY) {
			dev_err(dev, "not enough IOMEM resources\n");
			ret = -EINVAL;
			goto err0;
		}
	}

	/* allow any number of IRQs between 1 and INTC_IRQPIN_MAX */
	for (k = 0; k < INTC_IRQPIN_MAX; k++) {
		irq = platform_get_resource(pdev, IORESOURCE_IRQ, k);
		if (!irq)
			break;

		p->irq[k].p = p;
		p->irq[k].requested_irq = irq->start;
	}

	p->number_of_irqs = k;
	if (p->number_of_irqs < 1) {
		dev_err(dev, "not enough IRQ resources\n");
		ret = -EINVAL;
		goto err0;
	}

	/* ioremap IOMEM and setup read/write callbacks */
	for (k = 0; k < INTC_IRQPIN_REG_NR; k++) {
		i = &p->iomem[k];

		/* handle optional registers */
		if (!io[k])
			continue;

		switch (resource_size(io[k])) {
		case 1:
			i->width = 8;
			i->read = intc_irqpin_read8;
			i->write = intc_irqpin_write8;
			break;
		case 4:
			i->width = 32;
			i->read = intc_irqpin_read32;
			i->write = intc_irqpin_write32;
			break;
		default:
			dev_err(dev, "IOMEM size mismatch\n");
			ret = -EINVAL;
			goto err0;
		}

//.........这里部分代码省略.........

//.........这里部分代码省略.........
				return ret;
		}
	}

	dp->clock = devm_clk_get(&pdev->dev, "dp");
	if (IS_ERR(dp->clock)) {
		dev_err(&pdev->dev, "failed to get clock\n");
		return PTR_ERR(dp->clock);
	}

	clk_prepare_enable(dp->clock);

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	dp->reg_base = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(dp->reg_base))
		return PTR_ERR(dp->reg_base);

	dp->force_hpd = of_property_read_bool(dev->of_node, "force-hpd");

	dp->hpd_gpio = of_get_named_gpio(dev->of_node, "hpd-gpios", 0);
	if (!gpio_is_valid(dp->hpd_gpio))
		dp->hpd_gpio = of_get_named_gpio(dev->of_node,
						 "samsung,hpd-gpio", 0);

	if (gpio_is_valid(dp->hpd_gpio)) {
		/*
		 * Set up the hotplug GPIO from the device tree as an interrupt.
		 * Simply specifying a different interrupt in the device tree
		 * doesn't work since we handle hotplug rather differently when
		 * using a GPIO.  We also need the actual GPIO specifier so
		 * that we can get the current state of the GPIO.
		 */
		ret = devm_gpio_request_one(&pdev->dev, dp->hpd_gpio, GPIOF_IN,
					    "hpd_gpio");
		if (ret) {
			dev_err(&pdev->dev, "failed to get hpd gpio\n");
			return ret;
		}
		dp->irq = gpio_to_irq(dp->hpd_gpio);
		irq_flags = IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING;
	} else {
		dp->hpd_gpio = -ENODEV;
		dp->irq = platform_get_irq(pdev, 0);
		irq_flags = 0;
	}

	if (dp->irq == -ENXIO) {
		dev_err(&pdev->dev, "failed to get irq\n");
		return -ENODEV;
	}

	pm_runtime_enable(dev);

	pm_runtime_get_sync(dev);
	phy_power_on(dp->phy);

	analogix_dp_init_dp(dp);

	ret = devm_request_threaded_irq(&pdev->dev, dp->irq,
					analogix_dp_hardirq,
					analogix_dp_irq_thread,
					irq_flags, "analogix-dp", dp);
	if (ret) {
		dev_err(&pdev->dev, "failed to request irq\n");
		goto err_disable_pm_runtime;
	}
	disable_irq(dp->irq);

	dp->drm_dev = drm_dev;
	dp->encoder = dp->plat_data->encoder;

	dp->aux.name = "DP-AUX";
	dp->aux.transfer = analogix_dpaux_transfer;
	dp->aux.dev = &pdev->dev;

	ret = drm_dp_aux_register(&dp->aux);
	if (ret)
		goto err_disable_pm_runtime;

	ret = analogix_dp_create_bridge(drm_dev, dp);
	if (ret) {
		DRM_ERROR("failed to create bridge (%d)\n", ret);
		drm_encoder_cleanup(dp->encoder);
		goto err_disable_pm_runtime;
	}

	phy_power_off(dp->phy);
	pm_runtime_put(dev);

	return 0;

err_disable_pm_runtime:

	phy_power_off(dp->phy);
	pm_runtime_put(dev);
	pm_runtime_disable(dev);

	return ret;
}

static int usbhs_enable(struct device *dev)
{
	struct usbhs_hcd_omap		*omap = dev_get_drvdata(dev);
	struct usbhs_omap_platform_data	*pdata = &omap->platdata;
	unsigned long			flags = 0;
	int				ret = 0;
	unsigned			reg;

	dev_dbg(dev, "starting TI HSUSB Controller\n");
	if (!pdata) {
		dev_dbg(dev, "missing platform_data\n");
		return  -ENODEV;
	}

	spin_lock_irqsave(&omap->lock, flags);
	if (omap->count > 0)
		goto end_count;

	pm_runtime_get_sync(dev);

	if (pdata->ehci_data->phy_reset) {
		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) {
			gpio_request(pdata->ehci_data->reset_gpio_port[0],
						"USB1 PHY reset");
			gpio_direction_output
				(pdata->ehci_data->reset_gpio_port[0], 0);
		}

		if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) {
			gpio_request(pdata->ehci_data->reset_gpio_port[1],
						"USB2 PHY reset");
			gpio_direction_output
				(pdata->ehci_data->reset_gpio_port[1], 0);
		}

		/* Hold the PHY in RESET for enough time till DIR is high */
		udelay(10);
	}

	omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION);
	dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev);

	reg = usbhs_read(omap->uhh_base, OMAP_UHH_HOSTCONFIG);
	/* setup ULPI bypass and burst configurations */
	reg |= (OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN
			| OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN
			| OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN);
	reg |= OMAP4_UHH_HOSTCONFIG_APP_START_CLK;
	reg &= ~OMAP_UHH_HOSTCONFIG_INCRX_ALIGN_EN;

	if (is_omap_usbhs_rev1(omap)) {
		if (pdata->port_mode[0] == OMAP_USBHS_PORT_MODE_UNUSED)
			reg &= ~OMAP_UHH_HOSTCONFIG_P1_CONNECT_STATUS;
		if (pdata->port_mode[1] == OMAP_USBHS_PORT_MODE_UNUSED)
			reg &= ~OMAP_UHH_HOSTCONFIG_P2_CONNECT_STATUS;
		if (pdata->port_mode[2] == OMAP_USBHS_PORT_MODE_UNUSED)
			reg &= ~OMAP_UHH_HOSTCONFIG_P3_CONNECT_STATUS;

		/* Bypass the TLL module for PHY mode operation */
		if (cpu_is_omap3430() && (omap_rev() <= OMAP3430_REV_ES2_1)) {
			dev_dbg(dev, "OMAP3 ES version <= ES2.1\n");
			if (is_ehci_phy_mode(pdata->port_mode[0]) ||
				is_ehci_phy_mode(pdata->port_mode[1]) ||
					is_ehci_phy_mode(pdata->port_mode[2]))
				reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
			else
				reg |= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
		} else {
			dev_dbg(dev, "OMAP3 ES version > ES2.1\n");
			if (is_ehci_phy_mode(pdata->port_mode[0]))
				reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
			else
				reg |= OMAP_UHH_HOSTCONFIG_ULPI_P1_BYPASS;
			if (is_ehci_phy_mode(pdata->port_mode[1]))
				reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
			else
				reg |= OMAP_UHH_HOSTCONFIG_ULPI_P2_BYPASS;
			if (is_ehci_phy_mode(pdata->port_mode[2]))
				reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
			else
				reg |= OMAP_UHH_HOSTCONFIG_ULPI_P3_BYPASS;
		}
	} else if (is_omap_usbhs_rev2(omap)) {
		/* Clear port mode fields for PHY mode*/
		reg &= ~OMAP4_P1_MODE_CLEAR;
		reg &= ~OMAP4_P2_MODE_CLEAR;

		if (is_ehci_phy_mode(pdata->port_mode[0])) {
			ret = clk_set_parent(omap->utmi_p1_fck,
						omap->xclk60mhsp1_ck);
			if (ret != 0) {
				dev_err(dev, "xclk60mhsp1_ck set parent"
				"failed error:%d\n", ret);
				goto err_tll;
			}
		} else if (is_ehci_tll_mode(pdata->port_mode[0])) {
			ret = clk_set_parent(omap->utmi_p1_fck,
						omap->init_60m_fclk);
			if (ret != 0) {
				dev_err(dev, "init_60m_fclk set parent"
//.........这里部分代码省略.........

static ssize_t baseline_debugfs_read(struct file *filp, char __user *buf,
		size_t count, loff_t *ppos)
{
	struct cyttsp5_device_access_debugfs_data *data = filp->private_data;
	struct cyttsp5_device_access_data *dad = data->dad;
	struct device *dev = dad->dev;
	int status = STATUS_FAIL;
	int length = 0;
	int rc;

	if (*ppos)
		goto exit;

	mutex_lock(&dad->sysfs_lock);

	pm_runtime_get_sync(dev);

	rc = cmd->request_exclusive(dev, CY_REQUEST_EXCLUSIVE_TIMEOUT);
	if (rc < 0) {
		dev_err(dev, "%s: Error on request exclusive r=%d\n",
				__func__, rc);
		goto put_pm_runtime;
	}

	rc = cyttsp5_suspend_scan_cmd_(dev);
	if (rc < 0) {
		dev_err(dev, "%s: Error on suspend scan r=%d\n",
				__func__, rc);
		goto release_exclusive;
	}

	rc = _cyttsp5_initialize_baselines_cmd(dev, dad->baseline_sensing_mode,
			&dad->ic_buf[0]);
	if (rc < 0) {
		dev_err(dev, "%s: Error on initialize baselines r=%d\n",
				__func__, rc);
		goto resume_scan;
	}

	length = 1;

	status = STATUS_SUCCESS;

resume_scan:
	cyttsp5_resume_scan_cmd_(dev);

release_exclusive:
	cmd->release_exclusive(dev);

put_pm_runtime:
	pm_runtime_put(dev);

	if (status == STATUS_FAIL)
		length = 0;

	data->pr_buf_len = prepare_print_buffer(status, dad->ic_buf, length,
			data->pr_buf, sizeof(data->pr_buf));

	mutex_unlock(&dad->sysfs_lock);

exit:
	return simple_read_from_buffer(buf, count, ppos, data->pr_buf,
			data->pr_buf_len);
}

static irqreturn_t regmap_irq_thread(int irq, void *d)
{
	struct regmap_irq_chip_data *data = d;
	const struct regmap_irq_chip *chip = data->chip;
	struct regmap *map = data->map;
	int ret, i;
	bool handled = false;
	bool print_wakeup = false;
	int sub_irq;
	u32 reg;

	if (data->wakeup_print_enable && (irq == get_wakeup_reason_irq()))
		print_wakeup = true;

	mutex_lock(&data->shutdown_lock);
	if (data->shutdown) {
		dev_err(map->dev, "IRQ %d thread calls after shutdown\n", irq);
		goto exit;
	}

	if (chip->pre_irq && chip->pre_post_irq_data)
		chip->pre_irq(chip->pre_post_irq_data);

	if (chip->runtime_pm) {
		ret = pm_runtime_get_sync(map->dev);
		if (ret < 0) {
			dev_err(map->dev, "IRQ thread failed to resume: %d\n",
				ret);
			pm_runtime_put(map->dev);
			goto exit;
		}
	}

	/*
	 * Read in the statuses, using a single bulk read if possible
	 * in order to reduce the I/O overheads.
	 */
	if (!map->use_single_rw && map->reg_stride == 1 &&
	    data->irq_reg_stride == 1) {
		u8 *buf8 = data->status_reg_buf;
		u16 *buf16 = data->status_reg_buf;
		u32 *buf32 = data->status_reg_buf;

		BUG_ON(!data->status_reg_buf);

		ret = regmap_bulk_read(map, chip->status_base,
				       data->status_reg_buf,
				       chip->num_regs);
		if (ret != 0) {
			dev_err(map->dev, "Failed to read IRQ status: %d\n",
				ret);
			goto exit;
		}

		for (i = 0; i < data->chip->num_regs; i++) {
			switch (map->format.val_bytes) {
			case 1:
				data->status_buf[i] = buf8[i];
				break;
			case 2:
				data->status_buf[i] = buf16[i];
				break;
			case 4:
				data->status_buf[i] = buf32[i];
				break;
			default:
				BUG();
				goto exit;
			}
		}

	} else {
		for (i = 0; i < data->chip->num_regs; i++) {
			ret = regmap_read(map, chip->status_base +
					  (i * map->reg_stride
					   * data->irq_reg_stride),
					  &data->status_buf[i]);

			if (ret != 0) {
				dev_err(map->dev,
					"Failed to read IRQ status: %d\n",
					ret);
				if (chip->runtime_pm)
					pm_runtime_put(map->dev);
				goto exit;
			}
		}
	}

	/*
	 * Ignore masked IRQs and ack if we need to; we ack early so
	 * there is no race between handling and acknowleding the
	 * interrupt.  We assume that typically few of the interrupts
	 * will fire simultaneously so don't worry about overhead from
	 * doing a write per register.
	 */
	for (i = 0; i < data->chip->num_regs; i++) {
		data->status_buf[i] &= ~data->mask_buf[i];

		if (data->status_buf[i] && chip->ack_base) {
//.........这里部分代码省略.........