path: root/arch/arm/common/sa1111.c

/*
 * linux/arch/arm/common/sa1111.c
 *
 * SA1111 support
 *
 * Original code by John Dorsey
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This file contains all generic SA1111 support.
 *
 * All initialization functions provided here are intended to be called
 * from machine specific code with proper arguments when required.
 */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/io.h>

#include <mach/hardware.h>
#include <asm/mach/irq.h>
#include <asm/mach-types.h>
#include <asm/sizes.h>

#include <asm/hardware/sa1111.h>

/* SA1111 IRQs */
#define IRQ_GPAIN0		(0)
#define IRQ_GPAIN1		(1)
#define IRQ_GPAIN2		(2)
#define IRQ_GPAIN3		(3)
#define IRQ_GPBIN0		(4)
#define IRQ_GPBIN1		(5)
#define IRQ_GPBIN2		(6)
#define IRQ_GPBIN3		(7)
#define IRQ_GPBIN4		(8)
#define IRQ_GPBIN5		(9)
#define IRQ_GPCIN0		(10)
#define IRQ_GPCIN1		(11)
#define IRQ_GPCIN2		(12)
#define IRQ_GPCIN3		(13)
#define IRQ_GPCIN4		(14)
#define IRQ_GPCIN5		(15)
#define IRQ_GPCIN6		(16)
#define IRQ_GPCIN7		(17)
#define IRQ_MSTXINT		(18)
#define IRQ_MSRXINT		(19)
#define IRQ_MSSTOPERRINT	(20)
#define IRQ_TPTXINT		(21)
#define IRQ_TPRXINT		(22)
#define IRQ_TPSTOPERRINT	(23)
#define SSPXMTINT		(24)
#define SSPRCVINT		(25)
#define SSPROR			(26)
#define AUDXMTDMADONEA		(32)
#define AUDRCVDMADONEA		(33)
#define AUDXMTDMADONEB		(34)
#define AUDRCVDMADONEB		(35)
#define AUDTFSR			(36)
#define AUDRFSR			(37)
#define AUDTUR			(38)
#define AUDROR			(39)
#define AUDDTS			(40)
#define AUDRDD			(41)
#define AUDSTO			(42)
#define IRQ_USBPWR		(43)
#define IRQ_HCIM		(44)
#define IRQ_HCIBUFFACC		(45)
#define IRQ_HCIRMTWKP		(46)
#define IRQ_NHCIMFCIR		(47)
#define IRQ_USB_PORT_RESUME	(48)
#define IRQ_S0_READY_NINT	(49)
#define IRQ_S1_READY_NINT	(50)
#define IRQ_S0_CD_VALID		(51)
#define IRQ_S1_CD_VALID		(52)
#define IRQ_S0_BVD1_STSCHG	(53)
#define IRQ_S1_BVD1_STSCHG	(54)
#define SA1111_IRQ_NR		(55)

extern void sa1110_mb_enable(void);
extern void sa1110_mb_disable(void);

/*
 * We keep the following data for the overall SA1111.  Note that the
 * struct device and struct resource are "fake"; they should be supplied
 * by the bus above us.  However, in the interests of getting all SA1111
 * drivers converted over to the device model, we provide this as an
 * anchor point for all the other drivers.
 */
struct sa1111 {
	struct device	*dev;
	struct clk	*clk;
	unsigned long	phys;
	int		irq;
	int		irq_base;	/* base for cascaded on-chip IRQs */
	spinlock_t	lock;
	void __iomem	*base;
	struct sa1111_platform_data *pdata;
#ifdef CONFIG_PM
	void		*saved_state;
#endif
};

/*
 * We _really_ need to eliminate this.  Its only users
 * are the PWM and DMA checking code.
 */
static struct sa1111 *g_sa1111;

struct sa1111_dev_info {
	unsigned long	offset;
	unsigned long	skpcr_mask;
	bool		dma;
	unsigned int	devid;
	unsigned int	irq[6];
};

static struct sa1111_dev_info sa1111_devices[] = {
	{
		.offset		= SA1111_USB,
		.skpcr_mask	= SKPCR_UCLKEN,
		.dma		= true,
		.devid		= SA1111_DEVID_USB,
		.irq = {
			IRQ_USBPWR,
			IRQ_HCIM,
			IRQ_HCIBUFFACC,
			IRQ_HCIRMTWKP,
			IRQ_NHCIMFCIR,
			IRQ_USB_PORT_RESUME
		},
	},
	{
		.offset		= 0x0600,
		.skpcr_mask	= SKPCR_I2SCLKEN | SKPCR_L3CLKEN,
		.dma		= true,
		.devid		= SA1111_DEVID_SAC,
		.irq = {
			AUDXMTDMADONEA,
			AUDXMTDMADONEB,
			AUDRCVDMADONEA,
			AUDRCVDMADONEB
		},
	},
	{
		.offset		= 0x0800,
		.skpcr_mask	= SKPCR_SCLKEN,
		.devid		= SA1111_DEVID_SSP,
	},
	{
		.offset		= SA1111_KBD,
		.skpcr_mask	= SKPCR_PTCLKEN,
		.devid