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;
}
}
/*
* 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;
}
/*
* 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;
}
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;
}
