C++ (Cpp) sdma_init Examples

Example #1

File: kernel-gigabeat-s.c Project: CrashSerious/rockbox_psgroove

void INIT_ATTR kernel_device_init(void)
{
    sdma_init();
    spi_init();
    mc13783_init();
    dvfs_dptc_init();
    dvfs_wfi_monitor(true); /* Monitor the WFI signal */
#ifndef BOOTLOADER
    dvfs_dptc_start(); /* Should be ok to start even so early */
#endif
}

Example #2

File: kernel-imx31.c Project: BurntBrunch/rockbox-fft

void kernel_device_init(void)
{
    sdma_init();
    spi_init();
    mc13783_init();
}

Example #3

File: imx-sdma.c Project: boseji/kernel_imx

static int __init sdma_probe(struct platform_device *pdev)
{
	int ret;
	int irq;
	struct resource *iores;
	struct sdma_platform_data *pdata = pdev->dev.platform_data;
	int i;
	struct sdma_engine *sdma;

	sdma = kzalloc(sizeof(*sdma), GFP_KERNEL);
	if (!sdma)
		return -ENOMEM;

	sdma->dev = &pdev->dev;

	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	irq = platform_get_irq(pdev, 0);
	if (!iores || irq < 0 || !pdata) {
		ret = -EINVAL;
		goto err_irq;
	}

	if (!request_mem_region(iores->start, resource_size(iores), pdev->name)) {
		ret = -EBUSY;
		goto err_request_region;
	}

	sdma->clk = clk_get(&pdev->dev, NULL);
	if (IS_ERR(sdma->clk)) {
		ret = PTR_ERR(sdma->clk);
		goto err_clk;
	}

	sdma->regs = ioremap(iores->start, resource_size(iores));
	if (!sdma->regs) {
		ret = -ENOMEM;
		goto err_ioremap;
	}

	ret = request_irq(irq, sdma_int_handler, 0, "sdma", sdma);
	if (ret)
		goto err_request_irq;

	sdma->script_addrs = kzalloc(sizeof(*sdma->script_addrs), GFP_KERNEL);
	if (!sdma->script_addrs)
		goto err_alloc;

	sdma->version = pdata->sdma_version;

	dma_cap_set(DMA_SLAVE, sdma->dma_device.cap_mask);
	dma_cap_set(DMA_CYCLIC, sdma->dma_device.cap_mask);

	INIT_LIST_HEAD(&sdma->dma_device.channels);
	/* Initialize channel parameters */
	for (i = 0; i < MAX_DMA_CHANNELS; i++) {
		struct sdma_channel *sdmac = &sdma->channel[i];

		sdmac->sdma = sdma;
		spin_lock_init(&sdmac->lock);

		sdmac->chan.device = &sdma->dma_device;
		sdmac->channel = i;

		/*
		 * Add the channel to the DMAC list. Do not add channel 0 though
		 * because we need it internally in the SDMA driver. This also means
		 * that channel 0 in dmaengine counting matches sdma channel 1.
		 */
		if (i)
			list_add_tail(&sdmac->chan.device_node,
					&sdma->dma_device.channels);
	}

	ret = sdma_init(sdma);
	if (ret)
		goto err_init;

	if (pdata->script_addrs)
		sdma_add_scripts(sdma, pdata->script_addrs);

	sdma_get_firmware(sdma, pdata->cpu_name, pdata->to_version);

	sdma->dma_device.dev = &pdev->dev;

	sdma->dma_device.device_alloc_chan_resources = sdma_alloc_chan_resources;
	sdma->dma_device.device_free_chan_resources = sdma_free_chan_resources;
	sdma->dma_device.device_tx_status = sdma_tx_status;
	sdma->dma_device.device_prep_slave_sg = sdma_prep_slave_sg;
	sdma->dma_device.device_prep_dma_cyclic = sdma_prep_dma_cyclic;
	sdma->dma_device.device_control = sdma_control;
	sdma->dma_device.device_issue_pending = sdma_issue_pending;
	sdma->dma_device.dev->dma_parms = &sdma->dma_parms;
	dma_set_max_seg_size(sdma->dma_device.dev, 65535);

	ret = dma_async_device_register(&sdma->dma_device);
	if (ret) {
		dev_err(&pdev->dev, "unable to register\n");
		goto err_init;
	}

	dev_info(sdma->dev, "initialized\n");

	return 0;

err_init:
	kfree(sdma->script_addrs);
err_alloc:
	free_irq(irq, sdma);
err_request_irq:
	iounmap(sdma->regs);
err_ioremap:
	clk_put(sdma->clk);
err_clk:
	release_mem_region(iores->start, resource_size(iores));
err_request_region:
err_irq:
	kfree(sdma);
	return ret;
}