示例#1
0
static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp)
{
	mcbsp->dma_op_mode = MCBSP_DMA_MODE_ELEMENT;
	if (cpu_is_omap34xx()) {
		/*
		 * Initially configure the maximum thresholds to a safe value.
		 * The McBSP FIFO usage with these values should not go under
		 * 16 locations.
		 * If the whole FIFO without safety buffer is used, than there
		 * is a possibility that the DMA will be not able to push the
		 * new data on time, causing channel shifts in runtime.
		 */
		mcbsp->max_tx_thres = max_thres(mcbsp) - 0x10;
		mcbsp->max_rx_thres = max_thres(mcbsp) - 0x10;
		/*
		 * REVISIT: Set dmap_op_mode to THRESHOLD as default
		 * for mcbsp2 instances.
		 */
		if (omap_additional_add(mcbsp->dev))
			dev_warn(mcbsp->dev,
				"Unable to create additional controls\n");

		if (mcbsp->id == 2 || mcbsp->id == 3)
			if (omap_st_add(mcbsp))
				dev_warn(mcbsp->dev,
				 "Unable to create sidetone controls\n");

	} else {
		mcbsp->max_tx_thres = -EINVAL;
		mcbsp->max_rx_thres = -EINVAL;
	}
}
示例#2
0
文件: mcbsp.c 项目: 020gzh/linux
/*
 * McBSP1 and McBSP3 are directly mapped on 1610 and 1510.
 * 730 has only 2 McBSP, and both of them are MPU peripherals.
 */
int omap_mcbsp_init(struct platform_device *pdev)
{
	struct omap_mcbsp *mcbsp = platform_get_drvdata(pdev);
	struct resource *res;
	int ret = 0;

	spin_lock_init(&mcbsp->lock);
	mcbsp->free = true;

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mpu");
	if (!res)
		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

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

	mcbsp->phys_base = res->start;
	mcbsp->reg_cache_size = resource_size(res);

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dma");
	if (!res)
		mcbsp->phys_dma_base = mcbsp->phys_base;
	else
		mcbsp->phys_dma_base = res->start;

	/*
	 * OMAP1, 2 uses two interrupt lines: TX, RX
	 * OMAP2430, OMAP3 SoC have combined IRQ line as well.
	 * OMAP4 and newer SoC only have the combined IRQ line.
	 * Use the combined IRQ if available since it gives better debugging
	 * possibilities.
	 */
	mcbsp->irq = platform_get_irq_byname(pdev, "common");
	if (mcbsp->irq == -ENXIO) {
		mcbsp->tx_irq = platform_get_irq_byname(pdev, "tx");

		if (mcbsp->tx_irq == -ENXIO) {
			mcbsp->irq = platform_get_irq(pdev, 0);
			mcbsp->tx_irq = 0;
		} else {
			mcbsp->rx_irq = platform_get_irq_byname(pdev, "rx");
			mcbsp->irq = 0;
		}
	}

	if (!pdev->dev.of_node) {
		res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
		if (!res) {
			dev_err(&pdev->dev, "invalid tx DMA channel\n");
			return -ENODEV;
		}
		mcbsp->dma_req[0] = res->start;
		mcbsp->dma_data[0].filter_data = &mcbsp->dma_req[0];

		res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
		if (!res) {
			dev_err(&pdev->dev, "invalid rx DMA channel\n");
			return -ENODEV;
		}
		mcbsp->dma_req[1] = res->start;
		mcbsp->dma_data[1].filter_data = &mcbsp->dma_req[1];
	} else {
		mcbsp->dma_data[0].filter_data = "tx";
		mcbsp->dma_data[1].filter_data = "rx";
	}

	mcbsp->dma_data[0].addr = omap_mcbsp_dma_reg_params(mcbsp, 0);
	mcbsp->dma_data[0].maxburst = 4;

	mcbsp->dma_data[1].addr = omap_mcbsp_dma_reg_params(mcbsp, 1);
	mcbsp->dma_data[1].maxburst = 4;

	mcbsp->fclk = clk_get(&pdev->dev, "fck");
	if (IS_ERR(mcbsp->fclk)) {
		ret = PTR_ERR(mcbsp->fclk);
		dev_err(mcbsp->dev, "unable to get fck: %d\n", ret);
		return ret;
	}

	mcbsp->dma_op_mode = MCBSP_DMA_MODE_ELEMENT;
	if (mcbsp->pdata->buffer_size) {
		/*
		 * Initially configure the maximum thresholds to a safe value.
		 * The McBSP FIFO usage with these values should not go under
		 * 16 locations.
		 * If the whole FIFO without safety buffer is used, than there
		 * is a possibility that the DMA will be not able to push the
		 * new data on time, causing channel shifts in runtime.
		 */
		mcbsp->max_tx_thres = max_thres(mcbsp) - 0x10;
		mcbsp->max_rx_thres = max_thres(mcbsp) - 0x10;

		ret = sysfs_create_group(&mcbsp->dev->kobj,
					 &additional_attr_group);
		if (ret) {
			dev_err(mcbsp->dev,
				"Unable to create additional controls\n");
			goto err_thres;
		}
	} else {
		mcbsp->max_tx_thres = -EINVAL;
		mcbsp->max_rx_thres = -EINVAL;
	}

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sidetone");
	if (res) {
		ret = omap_st_add(mcbsp, res);
		if (ret) {
			dev_err(mcbsp->dev,
				"Unable to create sidetone controls\n");
			goto err_st;
		}
	}

	return 0;

err_st:
	if (mcbsp->pdata->buffer_size)
		sysfs_remove_group(&mcbsp->dev->kobj, &additional_attr_group);
err_thres:
	clk_put(mcbsp->fclk);
	return ret;
}
示例#3
0
文件: mcbsp.c 项目: 08opt/linux
/*
 * McBSP1 and McBSP3 are directly mapped on 1610 and 1510.
 * 730 has only 2 McBSP, and both of them are MPU peripherals.
 */
static int __devinit omap_mcbsp_probe(struct platform_device *pdev)
{
	struct omap_mcbsp_platform_data *pdata = pdev->dev.platform_data;
	struct omap_mcbsp *mcbsp;
	int id = pdev->id - 1;
	struct resource *res;
	int ret = 0;

	if (!pdata) {
		dev_err(&pdev->dev, "McBSP device initialized without"
				"platform data\n");
		ret = -EINVAL;
		goto exit;
	}

	dev_dbg(&pdev->dev, "Initializing OMAP McBSP (%d).\n", pdev->id);

	if (id >= omap_mcbsp_count) {
		dev_err(&pdev->dev, "Invalid McBSP device id (%d)\n", id);
		ret = -EINVAL;
		goto exit;
	}

	mcbsp = kzalloc(sizeof(struct omap_mcbsp), GFP_KERNEL);
	if (!mcbsp) {
		ret = -ENOMEM;
		goto exit;
	}

	spin_lock_init(&mcbsp->lock);
	mcbsp->id = id + 1;
	mcbsp->free = true;

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mpu");
	if (!res) {
		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		if (!res) {
			dev_err(&pdev->dev, "%s:mcbsp%d has invalid memory"
					"resource\n", __func__, pdev->id);
			ret = -ENOMEM;
			goto exit;
		}
	}
	mcbsp->phys_base = res->start;
	mcbsp->reg_cache_size = resource_size(res);
	mcbsp->io_base = ioremap(res->start, resource_size(res));
	if (!mcbsp->io_base) {
		ret = -ENOMEM;
		goto err_ioremap;
	}

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dma");
	if (!res)
		mcbsp->phys_dma_base = mcbsp->phys_base;
	else
		mcbsp->phys_dma_base = res->start;

	mcbsp->tx_irq = platform_get_irq_byname(pdev, "tx");
	mcbsp->rx_irq = platform_get_irq_byname(pdev, "rx");

	/* From OMAP4 there will be a single irq line */
	if (mcbsp->tx_irq == -ENXIO)
		mcbsp->tx_irq = platform_get_irq(pdev, 0);

	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
	if (!res) {
		dev_err(&pdev->dev, "%s:mcbsp%d has invalid rx DMA channel\n",
					__func__, pdev->id);
		ret = -ENODEV;
		goto err_res;
	}
	mcbsp->dma_rx_sync = res->start;

	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
	if (!res) {
		dev_err(&pdev->dev, "%s:mcbsp%d has invalid tx DMA channel\n",
					__func__, pdev->id);
		ret = -ENODEV;
		goto err_res;
	}
	mcbsp->dma_tx_sync = res->start;

	mcbsp->fclk = clk_get(&pdev->dev, "fck");
	if (IS_ERR(mcbsp->fclk)) {
		ret = PTR_ERR(mcbsp->fclk);
		dev_err(&pdev->dev, "unable to get fck: %d\n", ret);
		goto err_res;
	}

	mcbsp->pdata = pdata;
	mcbsp->dev = &pdev->dev;
	mcbsp_ptr[id] = mcbsp;
	platform_set_drvdata(pdev, mcbsp);
	pm_runtime_enable(mcbsp->dev);

	mcbsp->dma_op_mode = MCBSP_DMA_MODE_ELEMENT;
	if (mcbsp->pdata->buffer_size) {
		/*
		 * Initially configure the maximum thresholds to a safe value.
		 * The McBSP FIFO usage with these values should not go under
		 * 16 locations.
		 * If the whole FIFO without safety buffer is used, than there
		 * is a possibility that the DMA will be not able to push the
		 * new data on time, causing channel shifts in runtime.
		 */
		mcbsp->max_tx_thres = max_thres(mcbsp) - 0x10;
		mcbsp->max_rx_thres = max_thres(mcbsp) - 0x10;

		ret = sysfs_create_group(&mcbsp->dev->kobj,
					 &additional_attr_group);
		if (ret) {
			dev_err(mcbsp->dev,
				"Unable to create additional controls\n");
			goto err_thres;
		}
	} else {
		mcbsp->max_tx_thres = -EINVAL;
		mcbsp->max_rx_thres = -EINVAL;
	}

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sidetone");
	if (res) {
		ret = omap_st_add(mcbsp, res);
		if (ret) {
			dev_err(mcbsp->dev,
				"Unable to create sidetone controls\n");
			goto err_st;
		}
	}

	return 0;

err_st:
	if (mcbsp->pdata->buffer_size)
		sysfs_remove_group(&mcbsp->dev->kobj,
				   &additional_attr_group);
err_thres:
	clk_put(mcbsp->fclk);
err_res:
	iounmap(mcbsp->io_base);
err_ioremap:
	kfree(mcbsp);
exit:
	return ret;
}
示例#4
0
int __devinit omap_mcbsp_init(struct platform_device *pdev)
{
	struct omap_mcbsp *mcbsp = platform_get_drvdata(pdev);
	struct resource *res;
	int ret = 0;

	spin_lock_init(&mcbsp->lock);
	mcbsp->free = true;

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mpu");
	if (!res) {
		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		if (!res) {
			dev_err(mcbsp->dev, "invalid memory resource\n");
			return -ENOMEM;
		}
	}
	if (!devm_request_mem_region(&pdev->dev, res->start, resource_size(res),
				     dev_name(&pdev->dev))) {
		dev_err(mcbsp->dev, "memory region already claimed\n");
		return -ENODEV;
	}

	mcbsp->phys_base = res->start;
	mcbsp->reg_cache_size = resource_size(res);
	mcbsp->io_base = devm_ioremap(&pdev->dev, res->start,
				      resource_size(res));
	if (!mcbsp->io_base)
		return -ENOMEM;

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dma");
	if (!res)
		mcbsp->phys_dma_base = mcbsp->phys_base;
	else
		mcbsp->phys_dma_base = res->start;

	mcbsp->tx_irq = platform_get_irq_byname(pdev, "tx");
	mcbsp->rx_irq = platform_get_irq_byname(pdev, "rx");

	
	if (mcbsp->tx_irq == -ENXIO) {
		mcbsp->tx_irq = platform_get_irq(pdev, 0);
		mcbsp->rx_irq = 0;
	}

	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
	if (!res) {
		dev_err(&pdev->dev, "invalid rx DMA channel\n");
		return -ENODEV;
	}
	
	mcbsp->dma_data[1].name = "Audio Capture";
	mcbsp->dma_data[1].dma_req = res->start;
	mcbsp->dma_data[1].port_addr = omap_mcbsp_dma_reg_params(mcbsp, 1);

	res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
	if (!res) {
		dev_err(&pdev->dev, "invalid tx DMA channel\n");
		return -ENODEV;
	}
	
	mcbsp->dma_data[0].name = "Audio Playback";
	mcbsp->dma_data[0].dma_req = res->start;
	mcbsp->dma_data[0].port_addr = omap_mcbsp_dma_reg_params(mcbsp, 0);

	mcbsp->fclk = clk_get(&pdev->dev, "fck");
	if (IS_ERR(mcbsp->fclk)) {
		ret = PTR_ERR(mcbsp->fclk);
		dev_err(mcbsp->dev, "unable to get fck: %d\n", ret);
		return ret;
	}

	mcbsp->dma_op_mode = MCBSP_DMA_MODE_ELEMENT;
	if (mcbsp->pdata->buffer_size) {
		mcbsp->max_tx_thres = max_thres(mcbsp) - 0x10;
		mcbsp->max_rx_thres = max_thres(mcbsp) - 0x10;

		ret = sysfs_create_group(&mcbsp->dev->kobj,
					 &additional_attr_group);
		if (ret) {
			dev_err(mcbsp->dev,
				"Unable to create additional controls\n");
			goto err_thres;
		}
	} else {
		mcbsp->max_tx_thres = -EINVAL;
		mcbsp->max_rx_thres = -EINVAL;
	}

	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sidetone");
	if (res) {
		ret = omap_st_add(mcbsp, res);
		if (ret) {
			dev_err(mcbsp->dev,
				"Unable to create sidetone controls\n");
			goto err_st;
		}
	}

	return 0;

err_st:
	if (mcbsp->pdata->buffer_size)
		sysfs_remove_group(&mcbsp->dev->kobj, &additional_attr_group);
err_thres:
	clk_put(mcbsp->fclk);
	return ret;
}