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>

3 files changed, 64 insertions, 19 deletions

diff --git a/arch/arm/plat-omap/devices.c b/arch/arm/plat-omap/devices.c
index 10245b837c10..7d9f815cedec 100644
--- a/arch/arm/plat-omap/devices.c
+++ b/arch/arm/plat-omap/devices.c
@@ -35,8 +35,8 @@
 
 static struct platform_device **omap_mcbsp_devices;
 
-void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
-					int size)
+void omap_mcbsp_register_board_cfg(struct resource *res, int res_count,
+			struct omap_mcbsp_platform_data *config, int size)
 {
 	int i;
 
@@ -54,6 +54,8 @@ void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 		new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
 		if (!new_mcbsp)
 			continue;
+		platform_device_add_resources(new_mcbsp, &res[i * res_count],
+					res_count);
 		new_mcbsp->dev.platform_data = &config[i];
 		ret = platform_device_add(new_mcbsp);
 		if (ret) {
@@ -65,8 +67,8 @@ void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
 }
 
 #else
-void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
-					int size)
+void omap_mcbsp_register_board_cfg(struct resource *res, int res_count,
+			struct omap_mcbsp_platform_data *config, int size)
 {  }
 #endif
 
diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h
index 6ecf1051e5f4..dc1a28299ae2 100644
--- a/arch/arm/plat-omap/include/plat/mcbsp.h
+++ b/arch/arm/plat-omap/include/plat/mcbsp.h
@@ -63,9 +63,12 @@ static struct platform_device omap_mcbsp##port_nr = {	\
 #define OMAP34XX_MCBSP4_BASE	0x49026000
 #define OMAP34XX_MCBSP5_BASE	0x48096000
 
-#define OMAP44XX_MCBSP1_BASE	0x49022000
-#define OMAP44XX_MCBSP2_BASE	0x49024000
-#define OMAP44XX_MCBSP3_BASE	0x49026000
+#define OMAP44XX_MCBSP1_BASE	0x40122000
+#define OMAP44XX_MCBSP1_DMA_BASE	0x49022000
+#define OMAP44XX_MCBSP2_BASE	0x40124000
+#define OMAP44XX_MCBSP2_DMA_BASE	0x49024000
+#define OMAP44XX_MCBSP3_BASE	0x40126000
+#define OMAP44XX_MCBSP3_DMA_BASE	0x49026000
 #define OMAP44XX_MCBSP4_BASE	0x48096000
 
 #if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
@@ -431,6 +434,7 @@ struct omap_mcbsp_st_data {
 struct omap_mcbsp {
 	struct device *dev;
 	unsigned long phys_base;
+	unsigned long phys_dma_base;
 	void __iomem *io_base;
 	u8 id;
 	u8 free;
@@ -474,8 +478,8 @@ extern int omap_mcbsp_count, omap_mcbsp_cache_size;
 #define id_to_mcbsp_ptr(id)		mcbsp_ptr[id];
 
 int omap_mcbsp_init(void);
-void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
-					int size);
+void omap_mcbsp_register_board_cfg(struct resource *res, int res_count,
+			struct omap_mcbsp_platform_data *config, int size);
 void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg * config);
 #ifdef CONFIG_ARCH_OMAP3
 void omap_mcbsp_set_tx_threshold(unsigned int id, u16 threshold);
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);