ARM: OMAP: McBSP: Prepare for splitting into omap1 and omap2 code

This patch transform mcbsp code to use platform data
from arch/arm/plat-omap/devices.c

It also gets ride of ifdefs on mcbsp.c code.
To do it, a platform data structure was defined.
Signed-off-by: Eduardo Valentin <eduardo.valentin@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/plat-omap/devices.c

@@ -24,6 +24,7 @@
 #include <asm/arch/mux.h>
 #include <asm/arch/gpio.h>
 #include <asm/arch/menelaus.h>
+#include <asm/arch/mcbsp.h>
 
 #if	defined(CONFIG_OMAP_DSP) || defined(CONFIG_OMAP_DSP_MODULE)
 
@@ -144,6 +145,53 @@ static void omap_init_kp(void)
 static inline void omap_init_kp(void) {}
 #endif
 
+/*-------------------------------------------------------------------------*/
+#if defined(CONFIG_OMAP_MCBSP) || defined(CONFIG_OMAP_MCBSP_MODULE)
+
+static struct platform_device **omap_mcbsp_devices;
+
+void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
+					int size)
+{
+	int i;
+
+	if (size > OMAP_MAX_MCBSP_COUNT) {
+		printk(KERN_WARNING "Registered too many McBSPs platform_data."
+			" Using maximum (%d) available.\n",
+			OMAP_MAX_MCBSP_COUNT);
+		size = OMAP_MAX_MCBSP_COUNT;
+	}
+
+	omap_mcbsp_devices = kzalloc(size * sizeof(struct platform_device *),
+				     GFP_KERNEL);
+	if (!omap_mcbsp_devices) {
+		printk(KERN_ERR "Could not register McBSP devices\n");
+		return;
+	}
+
+	for (i = 0; i < size; i++) {
+		struct platform_device *new_mcbsp;
+		int ret;
+
+		new_mcbsp = platform_device_alloc("omap-mcbsp", i + 1);
+		if (!new_mcbsp)
+			continue;
+		new_mcbsp->dev.platform_data = &config[i];
+		ret = platform_device_add(new_mcbsp);
+		if (ret) {
+			platform_device_put(new_mcbsp);
+			continue;
+		}
+		omap_mcbsp_devices[i] = new_mcbsp;
+	}
+}
+
+#else
+void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
+					int size)
+{  }
+#endif
+
 /*-------------------------------------------------------------------------*/
 
 #if	defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)

include/asm-arm/arch-omap/mcbsp.h

@@ -24,7 +24,11 @@
 #ifndef __ASM_ARCH_OMAP_MCBSP_H
 #define __ASM_ARCH_OMAP_MCBSP_H
 
+#include <linux/completion.h>
+#include <linux/spinlock.h>
+
 #include <asm/hardware.h>
+#include <asm/arch/clock.h>
 
 #define OMAP730_MCBSP1_BASE	0xfffb1000
 #define OMAP730_MCBSP2_BASE	0xfffb1800
@@ -40,6 +44,9 @@
 #define OMAP24XX_MCBSP1_BASE	0x48074000
 #define OMAP24XX_MCBSP2_BASE	0x48076000
 
+#define OMAP34XX_MCBSP1_BASE	0x48074000
+#define OMAP34XX_MCBSP2_BASE	0x49022000
+
 #if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP730)
 
 #define OMAP_MCBSP_REG_DRR2	0x00
@@ -74,7 +81,8 @@
 #define OMAP_MCBSP_REG_XCERG	0x3A
 #define OMAP_MCBSP_REG_XCERH	0x3C
 
-#define OMAP_MAX_MCBSP_COUNT 3
+#define OMAP_MAX_MCBSP_COUNT	3
+#define MAX_MCBSP_CLOCKS	3
 
 #define AUDIO_MCBSP_DATAWRITE	(OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DXR1)
 #define AUDIO_MCBSP_DATAREAD	(OMAP1510_MCBSP1_BASE + OMAP_MCBSP_REG_DRR1)
@@ -117,7 +125,8 @@
 #define OMAP_MCBSP_REG_XCERG	0x74
 #define OMAP_MCBSP_REG_XCERH	0x78
 
-#define OMAP_MAX_MCBSP_COUNT 2
+#define OMAP_MAX_MCBSP_COUNT	2
+#define MAX_MCBSP_CLOCKS	2
 
 #define AUDIO_MCBSP_DATAWRITE	(OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DXR1)
 #define AUDIO_MCBSP_DATAREAD	(OMAP24XX_MCBSP2_BASE + OMAP_MCBSP_REG_DRR1)
@@ -298,6 +307,55 @@ struct omap_mcbsp_spi_cfg {
 	omap_mcbsp_word_length		word_length;
 };
 
+/* Platform specific configuration */
+struct omap_mcbsp_ops {
+	void (*request)(unsigned int);
+	void (*free)(unsigned int);
+	int (*check)(unsigned int);
+};
+
+struct omap_mcbsp_platform_data {
+	u32 virt_base;
+	u8 dma_rx_sync, dma_tx_sync;
+	u16 rx_irq, tx_irq;
+	struct omap_mcbsp_ops *ops;
+	char const *clk_name;
+};
+
+struct omap_mcbsp {
+	struct device *dev;
+	u32 io_base;
+	u8 id;
+	u8 free;
+	omap_mcbsp_word_length rx_word_length;
+	omap_mcbsp_word_length tx_word_length;
+
+	omap_mcbsp_io_type_t io_type; /* IRQ or poll */
+	/* IRQ based TX/RX */
+	int rx_irq;
+	int tx_irq;
+
+	/* DMA stuff */
+	u8 dma_rx_sync;
+	short dma_rx_lch;
+	u8 dma_tx_sync;
+	short dma_tx_lch;
+
+	/* Completion queues */
+	struct completion tx_irq_completion;
+	struct completion rx_irq_completion;
+	struct completion tx_dma_completion;
+	struct completion rx_dma_completion;
+
+	/* Protect the field .free, while checking if the mcbsp is in use */
+	spinlock_t lock;
+	struct omap_mcbsp_platform_data *pdata;
+	struct clk *clk;
+};
+
+int omap_mcbsp_init(void);
+void omap_mcbsp_register_board_cfg(struct omap_mcbsp_platform_data *config,
+					int size);
 void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg * config);
 int omap_mcbsp_request(unsigned int id);
 void omap_mcbsp_free(unsigned int id);