OMAP: McBSP: Convert McBSP to platform device model

Implement McBSP as platform device and add support for
registering through platform device layer using resource
structures.

Later in this patch series, OMAP2+ McBSP driver would be modified to
use hwmod framework after populating the omap2+ hwmod database.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 49 insertions, 10 deletions

diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index b5a6e178a7f9..5f25ae5f9c1d 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -1649,7 +1649,8 @@ static const struct attribute_group sidetone_attr_group = {
 
 static int __devinit omap_st_add(struct omap_mcbsp *mcbsp)
 {
-        struct omap_mcbsp_platform_data *pdata = mcbsp->pdata;
+        struct platform_device *pdev;
+        struct resource *res;
         struct omap_mcbsp_st_data *st_data;
         int err;
 
@@ -1659,7 +1660,10 @@ static int __devinit omap_st_add(struct omap_mcbsp *mcbsp)
                 goto err1;
         }
 
-        st_data->io_base_st = ioremap(pdata->phys_base_st, SZ_4K);
+        pdev = container_of(mcbsp->dev, struct platform_device, dev);
+
+        res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sidetone");
+        st_data->io_base_st = ioremap(res->start, resource_size(res));
         if (!st_data->io_base_st) {
                 err = -ENOMEM;
                 goto err2;
@@ -1748,6 +1752,7 @@ 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) {
@@ -1777,25 +1782,59 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev)
         mcbsp->dma_tx_lch = -1;
         mcbsp->dma_rx_lch = -1;
 
-        mcbsp->phys_base = pdata->phys_base;
-        mcbsp->io_base = ioremap(pdata->phys_base, SZ_4K);
+        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;
+        omap_mcbsp_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;
+
         /* Default I/O is IRQ based */
         mcbsp->io_type = OMAP_MCBSP_IRQ_IO;
-        mcbsp->tx_irq = pdata->tx_irq;
-        mcbsp->rx_irq = pdata->rx_irq;
-        mcbsp->dma_rx_sync = pdata->dma_rx_sync;
-        mcbsp->dma_tx_sync = pdata->dma_tx_sync;
+
+        mcbsp->tx_irq = platform_get_irq_byname(pdev, "tx");
+        mcbsp->rx_irq = platform_get_irq_byname(pdev, "rx");
+
+        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->iclk = clk_get(&pdev->dev, "ick");
         if (IS_ERR(mcbsp->iclk)) {
                 ret = PTR_ERR(mcbsp->iclk);
                 dev_err(&pdev->dev, "unable to get ick: %d\n", ret);
-                goto err_iclk;
+                goto err_res;
         }
 
         mcbsp->fclk = clk_get(&pdev->dev, "fck");
@@ -1817,7 +1856,7 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev)
 
 err_fclk:
         clk_put(mcbsp->iclk);
-err_iclk:
+err_res:
         iounmap(mcbsp->io_base);
 err_ioremap:
         kfree(mcbsp);