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/*
* SPI interface.
*
* Copyright (C) 2007-2010 Nokia Corporation
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 or
* (at your option) any later version of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef HW_SPI_H__
#define HW_SPI_H__
#include "hw.h"
#include "qdev.h"
typedef struct spi_device_s SPIDevice;
typedef struct spi_bus_s SPIBus;
typedef int (*spi_device_initfn)(SPIDevice *dev);
typedef uint32_t (*spi_txrx_cb)(SPIDevice *dev, uint32_t, int);
typedef struct {
DeviceInfo qdev;
spi_device_initfn init;
spi_txrx_cb txrx;
} SPIDeviceInfo;
struct spi_device_s {
DeviceState qdev;
SPIDeviceInfo *info;
/* internal fields used by SPI code */
uint8_t channel;
};
SPIBus *spi_init_bus(DeviceState *parent, const char *name, int num_channels);
uint32_t spi_txrx(SPIBus *bus, int channel, uint32_t data, int len);
#define SPI_DEVICE_FROM_QDEV(dev) DO_UPCAST(SPIDevice, qdev, dev)
#define FROM_SPI_DEVICE(type, dev) DO_UPCAST(type, spi, dev)
void spi_register_device(SPIDeviceInfo *info);
DeviceState *spi_create_device(SPIBus *bus, const char *name, int ch);
DeviceState *spi_create_device_noinit(SPIBus *bus, const char *name, int ch);
#endif
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