kernel_samsung_msm8974/drivers/media/isdbt/fc8150_spi/fc8150_ppi.c

/*****************************************************************************
 Copyright(c) 2012 FCI Inc. All Rights Reserved

 File name : fc8150_ppi.c

 Description : fc8150 host interface

*******************************************************************************/
#include "linux/io.h"

#include "fci_types.h"
#include "fc8150_regs.h"
#include "fci_oal.h"

#define BBM_BASE_ADDR       0x00

#define PPI_BMODE           0x00
#define PPI_WMODE           0x10
#define PPI_LMODE           0x20
#define PPI_READ            0x40
#define PPI_WRITE           0x00
#define PPI_AINC            0x80

#define FC8150_PPI_REG_OUT(x)      outb(x, BBM_BASE_ADDR)
#define FC8150_PPI_REG_IN      inb(BBM_BASE_ADDR)

int fc8150_ppi_init(HANDLE hDevice, u16 param1, u16 param2)
{
	OAL_CREATE_SEMAPHORE();

	return BBM_OK;
}

int fc8150_ppi_byteread(HANDLE hDevice, u16 addr, u8 *data)
{
	u32 length = 1;

	OAL_OBTAIN_SEMAPHORE();
	FC8150_PPI_REG_OUT(addr & 0xff);
	FC8150_PPI_REG_OUT((addr & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(PPI_READ | ((length & 0x0f0000) >> 16));
	FC8150_PPI_REG_OUT((length & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(length & 0xff);

	*data = FC8150_PPI_REG_IN;
	OAL_RELEASE_SEMAPHORE();
	return BBM_OK;
}

int fc8150_ppi_wordread(HANDLE hDevice, u16 addr, u16 *data)
{
	u32 length = 2;
	u8 command = PPI_AINC | PPI_READ | PPI_BMODE;

	OAL_OBTAIN_SEMAPHORE();
	FC8150_PPI_REG_OUT(addr & 0xff);
	FC8150_PPI_REG_OUT((addr & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(command | ((length & 0x0f0000) >> 16));
	FC8150_PPI_REG_OUT((length & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(length & 0xff);

	*data = FC8150_PPI_REG_IN;
	*data |= FC8150_PPI_REG_IN << 8;
	OAL_RELEASE_SEMAPHORE();

	return BBM_OK;
}

int fc8150_ppi_longread(HANDLE hDevice, u16 addr, u32 *data)
{
	u32 length = 4;
	u8 command = PPI_AINC | PPI_READ | PPI_BMODE;

	OAL_OBTAIN_SEMAPHORE();
	FC8150_PPI_REG_OUT(addr & 0xff);
	FC8150_PPI_REG_OUT((addr & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(command | ((length & 0x0f0000) >> 16));
	FC8150_PPI_REG_OUT((length & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(length & 0xff);

	*data = FC8150_PPI_REG_IN;
	*data |= FC8150_PPI_REG_IN << 8;
	*data |= FC8150_PPI_REG_IN << 16;
	*data |= FC8150_PPI_REG_IN << 24;
	OAL_RELEASE_SEMAPHORE();

	return BBM_OK;
}

int fc8150_ppi_bulkread(HANDLE hDevice, u16 addr, u8 *data, u16 length)
{
	int i;
	u8 command = PPI_AINC | PPI_READ | PPI_BMODE;

	OAL_OBTAIN_SEMAPHORE();
	FC8150_PPI_REG_OUT(addr & 0xff);
	FC8150_PPI_REG_OUT((addr & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(command | ((length & 0x0f0000) >> 16));
	FC8150_PPI_REG_OUT((length & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(length & 0xff);

	for (i = 0; i < length; i++)
		data[i] = FC8150_PPI_REG_IN;

	OAL_RELEASE_SEMAPHORE();

	return BBM_OK;
}

int fc8150_ppi_bytewrite(HANDLE hDevice, u16 addr, u8 data)
{
	u32 length = 1;

	OAL_OBTAIN_SEMAPHORE();
	FC8150_PPI_REG_OUT(addr & 0xff);
	FC8150_PPI_REG_OUT((addr & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(PPI_WRITE | ((length & 0x0f0000) >> 16));
	FC8150_PPI_REG_OUT((length & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(length & 0xff);

	FC8150_PPI_REG_OUT(data);
	OAL_RELEASE_SEMAPHORE();

	return BBM_OK;
}

int fc8150_ppi_wordwrite(HANDLE hDevice, u16 addr, u16 data)
{
	u32 length = 2;
	u8 command = PPI_AINC | PPI_WRITE | PPI_BMODE;

	OAL_OBTAIN_SEMAPHORE();
	FC8150_PPI_REG_OUT(addr & 0xff);
	FC8150_PPI_REG_OUT((addr & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(command | ((length & 0x0f0000) >> 16));
	FC8150_PPI_REG_OUT((length & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(length & 0xff);

	FC8150_PPI_REG_OUT(data & 0xff);
	FC8150_PPI_REG_OUT((data & 0xff00) >> 8);
	OAL_RELEASE_SEMAPHORE();

	return BBM_OK;
}

int fc8150_ppi_longwrite(HANDLE hDevice, u16 addr, u32 data)
{
	u32 length = 4;
	u8 command = PPI_AINC | PPI_WRITE | PPI_BMODE;

	OAL_OBTAIN_SEMAPHORE();
	FC8150_PPI_REG_OUT(addr & 0xff);
	FC8150_PPI_REG_OUT((addr & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(command | ((length & 0x0f0000) >> 16));
	FC8150_PPI_REG_OUT((length & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(length & 0xff);

	FC8150_PPI_REG_OUT(data &  0x000000ff);
	FC8150_PPI_REG_OUT((data & 0x0000ff00) >> 8);
	FC8150_PPI_REG_OUT((data & 0x00ff0000) >> 16);
	FC8150_PPI_REG_OUT((data & 0xff000000) >> 24);
	OAL_RELEASE_SEMAPHORE();

	return BBM_OK;
}

int fc8150_ppi_bulkwrite(HANDLE hDevice, u16 addr, u8 *data, u16 length)
{
	int i;
	u8 command = PPI_AINC | PPI_WRITE | PPI_BMODE;

	OAL_OBTAIN_SEMAPHORE();
	FC8150_PPI_REG_OUT(addr & 0xff);
	FC8150_PPI_REG_OUT((addr & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(command | ((length & 0x0f0000) >> 16));
	FC8150_PPI_REG_OUT((length & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(length & 0xff);

	for (i = 0; i < length; i++)
		FC8150_PPI_REG_OUT(data[i]);

	OAL_RELEASE_SEMAPHORE();

	return BBM_OK;
}

int fc8150_ppi_dataread(HANDLE hDevice, u16 addr, u8 *data, u32 length)
{
	int i;
	u8 command = PPI_READ | PPI_BMODE;

	OAL_OBTAIN_SEMAPHORE();
	FC8150_PPI_REG_OUT(addr & 0xff);
	FC8150_PPI_REG_OUT((addr & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(command | ((length & 0x0f0000) >> 16));
	FC8150_PPI_REG_OUT((length & 0xff00) >> 8);
	FC8150_PPI_REG_OUT(length & 0xff);

	for (i = 0; i < length; i++)
		data[i] = FC8150_PPI_REG_IN;

	OAL_RELEASE_SEMAPHORE();

	return BBM_OK;
}

int fc8150_ppi_deinit(HANDLE hDevice)
{
	OAL_DELETE_SEMAPHORE();

	return BBM_OK;
}