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-rw-r--r--qemu/include/hw/i2c/i2c.h86
-rw-r--r--qemu/include/hw/i2c/pm_smbus.h20
-rw-r--r--qemu/include/hw/i2c/smbus.h83
3 files changed, 189 insertions, 0 deletions
diff --git a/qemu/include/hw/i2c/i2c.h b/qemu/include/hw/i2c/i2c.h
new file mode 100644
index 000000000..4986ebc73
--- /dev/null
+++ b/qemu/include/hw/i2c/i2c.h
@@ -0,0 +1,86 @@
+#ifndef QEMU_I2C_H
+#define QEMU_I2C_H
+
+#include "hw/qdev.h"
+
+/* The QEMU I2C implementation only supports simple transfers that complete
+ immediately. It does not support slave devices that need to be able to
+ defer their response (eg. CPU slave interfaces where the data is supplied
+ by the device driver in response to an interrupt). */
+
+enum i2c_event {
+ I2C_START_RECV,
+ I2C_START_SEND,
+ I2C_FINISH,
+ I2C_NACK /* Masker NACKed a receive byte. */
+};
+
+typedef struct I2CSlave I2CSlave;
+
+#define TYPE_I2C_SLAVE "i2c-slave"
+#define I2C_SLAVE(obj) \
+ OBJECT_CHECK(I2CSlave, (obj), TYPE_I2C_SLAVE)
+#define I2C_SLAVE_CLASS(klass) \
+ OBJECT_CLASS_CHECK(I2CSlaveClass, (klass), TYPE_I2C_SLAVE)
+#define I2C_SLAVE_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(I2CSlaveClass, (obj), TYPE_I2C_SLAVE)
+
+typedef struct I2CSlaveClass
+{
+ DeviceClass parent_class;
+
+ /* Callbacks provided by the device. */
+ int (*init)(I2CSlave *dev);
+
+ /* Master to slave. */
+ int (*send)(I2CSlave *s, uint8_t data);
+
+ /* Slave to master. */
+ int (*recv)(I2CSlave *s);
+
+ /* Notify the slave of a bus state change. */
+ void (*event)(I2CSlave *s, enum i2c_event event);
+} I2CSlaveClass;
+
+struct I2CSlave
+{
+ DeviceState qdev;
+
+ /* Remaining fields for internal use by the I2C code. */
+ uint8_t address;
+};
+
+I2CBus *i2c_init_bus(DeviceState *parent, const char *name);
+void i2c_set_slave_address(I2CSlave *dev, uint8_t address);
+int i2c_bus_busy(I2CBus *bus);
+int i2c_start_transfer(I2CBus *bus, uint8_t address, int recv);
+void i2c_end_transfer(I2CBus *bus);
+void i2c_nack(I2CBus *bus);
+int i2c_send(I2CBus *bus, uint8_t data);
+int i2c_recv(I2CBus *bus);
+
+DeviceState *i2c_create_slave(I2CBus *bus, const char *name, uint8_t addr);
+
+/* wm8750.c */
+void wm8750_data_req_set(DeviceState *dev,
+ void (*data_req)(void *, int, int), void *opaque);
+void wm8750_dac_dat(void *opaque, uint32_t sample);
+uint32_t wm8750_adc_dat(void *opaque);
+void *wm8750_dac_buffer(void *opaque, int samples);
+void wm8750_dac_commit(void *opaque);
+void wm8750_set_bclk_in(void *opaque, int new_hz);
+
+/* lm832x.c */
+void lm832x_key_event(DeviceState *dev, int key, int state);
+
+extern const VMStateDescription vmstate_i2c_slave;
+
+#define VMSTATE_I2C_SLAVE(_field, _state) { \
+ .name = (stringify(_field)), \
+ .size = sizeof(I2CSlave), \
+ .vmsd = &vmstate_i2c_slave, \
+ .flags = VMS_STRUCT, \
+ .offset = vmstate_offset_value(_state, _field, I2CSlave), \
+}
+
+#endif
diff --git a/qemu/include/hw/i2c/pm_smbus.h b/qemu/include/hw/i2c/pm_smbus.h
new file mode 100644
index 000000000..926603fdf
--- /dev/null
+++ b/qemu/include/hw/i2c/pm_smbus.h
@@ -0,0 +1,20 @@
+#ifndef PM_SMBUS_H
+#define PM_SMBUS_H
+
+typedef struct PMSMBus {
+ I2CBus *smbus;
+ MemoryRegion io;
+
+ uint8_t smb_stat;
+ uint8_t smb_ctl;
+ uint8_t smb_cmd;
+ uint8_t smb_addr;
+ uint8_t smb_data0;
+ uint8_t smb_data1;
+ uint8_t smb_data[32];
+ uint8_t smb_index;
+} PMSMBus;
+
+void pm_smbus_init(DeviceState *parent, PMSMBus *smb);
+
+#endif /* !PM_SMBUS_H */
diff --git a/qemu/include/hw/i2c/smbus.h b/qemu/include/hw/i2c/smbus.h
new file mode 100644
index 000000000..544bbc195
--- /dev/null
+++ b/qemu/include/hw/i2c/smbus.h
@@ -0,0 +1,83 @@
+#ifndef QEMU_SMBUS_H
+#define QEMU_SMBUS_H
+
+/*
+ * QEMU SMBus API
+ *
+ * Copyright (c) 2007 Arastra, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "hw/i2c/i2c.h"
+
+#define TYPE_SMBUS_DEVICE "smbus-device"
+#define SMBUS_DEVICE(obj) \
+ OBJECT_CHECK(SMBusDevice, (obj), TYPE_SMBUS_DEVICE)
+#define SMBUS_DEVICE_CLASS(klass) \
+ OBJECT_CLASS_CHECK(SMBusDeviceClass, (klass), TYPE_SMBUS_DEVICE)
+#define SMBUS_DEVICE_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(SMBusDeviceClass, (obj), TYPE_SMBUS_DEVICE)
+
+typedef struct SMBusDeviceClass
+{
+ I2CSlaveClass parent_class;
+ int (*init)(SMBusDevice *dev);
+ void (*quick_cmd)(SMBusDevice *dev, uint8_t read);
+ void (*send_byte)(SMBusDevice *dev, uint8_t val);
+ uint8_t (*receive_byte)(SMBusDevice *dev);
+ /* We can't distinguish between a word write and a block write with
+ length 1, so pass the whole data block including the length byte
+ (if present). The device is responsible figuring out what type of
+ command this is. */
+ void (*write_data)(SMBusDevice *dev, uint8_t cmd, uint8_t *buf, int len);
+ /* Likewise we can't distinguish between different reads, or even know
+ the length of the read until the read is complete, so read data a
+ byte at a time. The device is responsible for adding the length
+ byte on block reads. */
+ uint8_t (*read_data)(SMBusDevice *dev, uint8_t cmd, int n);
+} SMBusDeviceClass;
+
+struct SMBusDevice {
+ /* The SMBus protocol is implemented on top of I2C. */
+ I2CSlave i2c;
+
+ /* Remaining fields for internal use only. */
+ int mode;
+ int data_len;
+ uint8_t data_buf[34]; /* command + len + 32 bytes of data. */
+ uint8_t command;
+};
+
+/* Master device commands. */
+int smbus_quick_command(I2CBus *bus, uint8_t addr, int read);
+int smbus_receive_byte(I2CBus *bus, uint8_t addr);
+int smbus_send_byte(I2CBus *bus, uint8_t addr, uint8_t data);
+int smbus_read_byte(I2CBus *bus, uint8_t addr, uint8_t command);
+int smbus_write_byte(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t data);
+int smbus_read_word(I2CBus *bus, uint8_t addr, uint8_t command);
+int smbus_write_word(I2CBus *bus, uint8_t addr, uint8_t command, uint16_t data);
+int smbus_read_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data);
+int smbus_write_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data,
+ int len);
+
+void smbus_eeprom_init(I2CBus *smbus, int nb_eeprom,
+ const uint8_t *eeprom_spd, int size);
+
+#endif