c0825c63cf
Create an i2c-bus interface, corresponding to the I2CAdapter struct. Wrap IMXI2C and OMAPI2C with a QOSGraphObject, and add the get_driver function to retrieve the I2CAdapter. The conversion is still not complete; for simplicity, i2c_recv and i2c_send (along with their wrappers) still take an adapter/address pair. Fixing that would be complicated until the tests are converted to qgraph, so it is left for after the conversion. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/*
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* I2C libqos
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*
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* Copyright (c) 2012 Andreas Färber
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef LIBQOS_I2C_H
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#define LIBQOS_I2C_H
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#include "libqtest.h"
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#include "libqos/qgraph.h"
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typedef struct I2CAdapter I2CAdapter;
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struct I2CAdapter {
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void (*send)(I2CAdapter *adapter, uint8_t addr,
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const uint8_t *buf, uint16_t len);
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void (*recv)(I2CAdapter *adapter, uint8_t addr,
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uint8_t *buf, uint16_t len);
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QTestState *qts;
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};
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typedef struct QI2CDevice QI2CDevice;
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struct QI2CDevice {
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/*
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* For now, all devices are simple enough that there is no need for
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* them to define their own constructor and get_driver functions.
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* Therefore, QOSGraphObject is included directly in QI2CDevice;
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* the tests expect to get a QI2CDevice rather than doing something
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* like obj->get_driver("i2c-device").
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*
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* In fact there is no i2c-device interface even, because there are
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* no generic I2C tests).
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*/
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QOSGraphObject obj;
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I2CAdapter *bus;
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};
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#define OMAP2_I2C_1_BASE 0x48070000
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void *i2c_device_create(void *i2c_bus, QGuestAllocator *alloc, void *addr);
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void i2c_send(I2CAdapter *i2c, uint8_t addr,
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const uint8_t *buf, uint16_t len);
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void i2c_recv(I2CAdapter *i2c, uint8_t addr,
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uint8_t *buf, uint16_t len);
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void i2c_read_block(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
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uint8_t *buf, uint16_t len);
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void i2c_write_block(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
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const uint8_t *buf, uint16_t len);
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uint8_t i2c_get8(I2CAdapter *i2c, uint8_t addr, uint8_t reg);
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uint16_t i2c_get16(I2CAdapter *i2c, uint8_t addr, uint8_t reg);
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void i2c_set8(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
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uint8_t value);
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void i2c_set16(I2CAdapter *i2c, uint8_t addr, uint8_t reg,
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uint16_t value);
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/* i2c-omap.c */
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typedef struct OMAPI2C {
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QOSGraphObject obj;
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I2CAdapter parent;
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uint64_t addr;
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} OMAPI2C;
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void omap_i2c_init(OMAPI2C *s, QTestState *qts, uint64_t addr);
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I2CAdapter *omap_i2c_create(QTestState *qts, uint64_t addr);
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void omap_i2c_free(I2CAdapter *i2c);
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/* i2c-imx.c */
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typedef struct IMXI2C {
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QOSGraphObject obj;
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I2CAdapter parent;
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uint64_t addr;
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} IMXI2C;
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void imx_i2c_init(IMXI2C *s, QTestState *qts, uint64_t addr);
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I2CAdapter *imx_i2c_create(QTestState *qts, uint64_t addr);
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void imx_i2c_free(I2CAdapter *i2c);
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#endif
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