i2c: Split smbus into parts

smbus.c and smbus.h had device side code, master side code, and
smbus.h has some smbus_eeprom.c definitions.  Split them into
separate files.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

1 files changed, 0 insertions, 379 deletions

diff --git a/hw/i2c/smbus.c b/hw/i2c/smbus.c
deleted file mode 100644
index 30028bfcc2..0000000000
--- a/hw/i2c/smbus.c
+++ /dev/null
@@ -1,379 +0,0 @@
-/*
- * QEMU SMBus device emulation.
- *
- * Copyright (c) 2007 CodeSourcery.
- * Written by Paul Brook
- *
- * This code is licensed under the LGPL.
- */
-
-/* TODO: Implement PEC.  */
-
-#include "qemu/osdep.h"
-#include "hw/hw.h"
-#include "hw/i2c/i2c.h"
-#include "hw/i2c/smbus.h"
-
-//#define DEBUG_SMBUS 1
-
-#ifdef DEBUG_SMBUS
-#define DPRINTF(fmt, ...) \
-do { printf("smbus(%02x): " fmt , dev->i2c.address, ## __VA_ARGS__); } while (0)
-#define BADF(fmt, ...) \
-do { fprintf(stderr, "smbus: error: " fmt , ## __VA_ARGS__); exit(1);} while (0)
-#else
-#define DPRINTF(fmt, ...) do {} while(0)
-#define BADF(fmt, ...) \
-do { fprintf(stderr, "smbus: error: " fmt , ## __VA_ARGS__);} while (0)
-#endif
-
-enum {
-    SMBUS_IDLE,
-    SMBUS_WRITE_DATA,
-    SMBUS_RECV_BYTE,
-    SMBUS_READ_DATA,
-    SMBUS_DONE,
-    SMBUS_CONFUSED = -1
-};
-
-static void smbus_do_quick_cmd(SMBusDevice *dev, int recv)
-{
-    SMBusDeviceClass *sc = SMBUS_DEVICE_GET_CLASS(dev);
-
-    DPRINTF("Quick Command %d\n", recv);
-    if (sc->quick_cmd) {
-        sc->quick_cmd(dev, recv);
-    }
-}
-
-static void smbus_do_write(SMBusDevice *dev)
-{
-    SMBusDeviceClass *sc = SMBUS_DEVICE_GET_CLASS(dev);
-
-    if (dev->data_len == 0) {
-        smbus_do_quick_cmd(dev, 0);
-    } else if (dev->data_len == 1) {
-        DPRINTF("Send Byte\n");
-        if (sc->send_byte) {
-            sc->send_byte(dev, dev->data_buf[0]);
-        }
-    } else {
-        dev->command = dev->data_buf[0];
-        DPRINTF("Command %d len %d\n", dev->command, dev->data_len - 1);
-        if (sc->write_data) {
-            sc->write_data(dev, dev->command, dev->data_buf + 1,
-                           dev->data_len - 1);
-        }
-    }
-}
-
-static int smbus_i2c_event(I2CSlave *s, enum i2c_event event)
-{
-    SMBusDevice *dev = SMBUS_DEVICE(s);
-
-    switch (event) {
-    case I2C_START_SEND:
-        switch (dev->mode) {
-        case SMBUS_IDLE:
-            DPRINTF("Incoming data\n");
-            dev->mode = SMBUS_WRITE_DATA;
-            break;
-        default:
-            BADF("Unexpected send start condition in state %d\n", dev->mode);
-            dev->mode = SMBUS_CONFUSED;
-            break;
-        }
-        break;
-
-    case I2C_START_RECV:
-        switch (dev->mode) {
-        case SMBUS_IDLE:
-            DPRINTF("Read mode\n");
-            dev->mode = SMBUS_RECV_BYTE;
-            break;
-        case SMBUS_WRITE_DATA:
-            if (dev->data_len == 0) {
-                BADF("Read after write with no data\n");
-                dev->mode = SMBUS_CONFUSED;
-            } else {
-                if (dev->data_len > 1) {
-                    smbus_do_write(dev);
-                } else {
-                    dev->command = dev->data_buf[0];
-                    DPRINTF("%02x: Command %d\n", dev->i2c.address,
-                            dev->command);
-                }
-                DPRINTF("Read mode\n");
-                dev->data_len = 0;
-                dev->mode = SMBUS_READ_DATA;
-            }
-            break;
-        default:
-            BADF("Unexpected recv start condition in state %d\n", dev->mode);
-            dev->mode = SMBUS_CONFUSED;
-            break;
-        }
-        break;
-
-    case I2C_FINISH:
-        switch (dev->mode) {
-        case SMBUS_WRITE_DATA:
-            smbus_do_write(dev);
-            break;
-        case SMBUS_RECV_BYTE:
-            smbus_do_quick_cmd(dev, 1);
-            break;
-        case SMBUS_READ_DATA:
-            BADF("Unexpected stop during receive\n");
-            break;
-        default:
-            /* Nothing to do.  */
-            break;
-        }
-        dev->mode = SMBUS_IDLE;
-        dev->data_len = 0;
-        break;
-
-    case I2C_NACK:
-        switch (dev->mode) {
-        case SMBUS_DONE:
-            /* Nothing to do.  */
-            break;
-        case SMBUS_READ_DATA:
-            dev->mode = SMBUS_DONE;
-            break;
-        default:
-            BADF("Unexpected NACK in state %d\n", dev->mode);
-            dev->mode = SMBUS_CONFUSED;
-            break;
-        }
-    }
-
-    return 0;
-}
-
-static int smbus_i2c_recv(I2CSlave *s)
-{
-    SMBusDevice *dev = SMBUS_DEVICE(s);
-    SMBusDeviceClass *sc = SMBUS_DEVICE_GET_CLASS(dev);
-    int ret;
-
-    switch (dev->mode) {
-    case SMBUS_RECV_BYTE:
-        if (sc->receive_byte) {
-            ret = sc->receive_byte(dev);
-        } else {
-            ret = 0;
-        }
-        DPRINTF("Receive Byte %02x\n", ret);
-        dev->mode = SMBUS_DONE;
-        break;
-    case SMBUS_READ_DATA:
-        if (sc->read_data) {
-            ret = sc->read_data(dev, dev->command, dev->data_len);
-            dev->data_len++;
-        } else {
-            ret = 0;
-        }
-        DPRINTF("Read data %02x\n", ret);
-        break;
-    default:
-        BADF("Unexpected read in state %d\n", dev->mode);
-        dev->mode = SMBUS_CONFUSED;
-        ret = 0;
-        break;
-    }
-    return ret;
-}
-
-static int smbus_i2c_send(I2CSlave *s, uint8_t data)
-{
-    SMBusDevice *dev = SMBUS_DEVICE(s);
-
-    switch (dev->mode) {
-    case SMBUS_WRITE_DATA:
-        DPRINTF("Write data %02x\n", data);
-        if (dev->data_len >= sizeof(dev->data_buf)) {
-            BADF("Too many bytes sent\n");
-        } else {
-            dev->data_buf[dev->data_len++] = data;
-        }
-        break;
-    default:
-        BADF("Unexpected write in state %d\n", dev->mode);
-        break;
-    }
-    return 0;
-}
-
-/* Master device commands.  */
-int smbus_quick_command(I2CBus *bus, uint8_t addr, int read)
-{
-    if (i2c_start_transfer(bus, addr, read)) {
-        return -1;
-    }
-    i2c_end_transfer(bus);
-    return 0;
-}
-
-int smbus_receive_byte(I2CBus *bus, uint8_t addr)
-{
-    uint8_t data;
-
-    if (i2c_start_transfer(bus, addr, 1)) {
-        return -1;
-    }
-    data = i2c_recv(bus);
-    i2c_nack(bus);
-    i2c_end_transfer(bus);
-    return data;
-}
-
-int smbus_send_byte(I2CBus *bus, uint8_t addr, uint8_t data)
-{
-    if (i2c_start_transfer(bus, addr, 0)) {
-        return -1;
-    }
-    i2c_send(bus, data);
-    i2c_end_transfer(bus);
-    return 0;
-}
-
-int smbus_read_byte(I2CBus *bus, uint8_t addr, uint8_t command)
-{
-    uint8_t data;
-    if (i2c_start_transfer(bus, addr, 0)) {
-        return -1;
-    }
-    i2c_send(bus, command);
-    if (i2c_start_transfer(bus, addr, 1)) {
-        i2c_end_transfer(bus);
-        return -1;
-    }
-    data = i2c_recv(bus);
-    i2c_nack(bus);
-    i2c_end_transfer(bus);
-    return data;
-}
-
-int smbus_write_byte(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t data)
-{
-    if (i2c_start_transfer(bus, addr, 0)) {
-        return -1;
-    }
-    i2c_send(bus, command);
-    i2c_send(bus, data);
-    i2c_end_transfer(bus);
-    return 0;
-}
-
-int smbus_read_word(I2CBus *bus, uint8_t addr, uint8_t command)
-{
-    uint16_t data;
-    if (i2c_start_transfer(bus, addr, 0)) {
-        return -1;
-    }
-    i2c_send(bus, command);
-    if (i2c_start_transfer(bus, addr, 1)) {
-        i2c_end_transfer(bus);
-        return -1;
-    }
-    data = i2c_recv(bus);
-    data |= i2c_recv(bus) << 8;
-    i2c_nack(bus);
-    i2c_end_transfer(bus);
-    return data;
-}
-
-int smbus_write_word(I2CBus *bus, uint8_t addr, uint8_t command, uint16_t data)
-{
-    if (i2c_start_transfer(bus, addr, 0)) {
-        return -1;
-    }
-    i2c_send(bus, command);
-    i2c_send(bus, data & 0xff);
-    i2c_send(bus, data >> 8);
-    i2c_end_transfer(bus);
-    return 0;
-}
-
-int smbus_read_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data,
-                     int len, bool recv_len, bool send_cmd)
-{
-    int rlen;
-    int i;
-
-    if (send_cmd) {
-        if (i2c_start_transfer(bus, addr, 0)) {
-            return -1;
-        }
-        i2c_send(bus, command);
-    }
-    if (i2c_start_transfer(bus, addr, 1)) {
-        if (send_cmd) {
-            i2c_end_transfer(bus);
-        }
-        return -1;
-    }
-    if (recv_len) {
-        rlen = i2c_recv(bus);
-    } else {
-        rlen = len;
-    }
-    if (rlen > len) {
-        rlen = 0;
-    }
-    for (i = 0; i < rlen; i++) {
-        data[i] = i2c_recv(bus);
-    }
-    i2c_nack(bus);
-    i2c_end_transfer(bus);
-    return rlen;
-}
-
-int smbus_write_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data,
-                      int len, bool send_len)
-{
-    int i;
-
-    if (len > 32)
-        len = 32;
-
-    if (i2c_start_transfer(bus, addr, 0)) {
-        return -1;
-    }
-    i2c_send(bus, command);
-    if (send_len) {
-        i2c_send(bus, len);
-    }
-    for (i = 0; i < len; i++) {
-        i2c_send(bus, data[i]);
-    }
-    i2c_end_transfer(bus);
-    return 0;
-}
-
-static void smbus_device_class_init(ObjectClass *klass, void *data)
-{
-    I2CSlaveClass *sc = I2C_SLAVE_CLASS(klass);
-
-    sc->event = smbus_i2c_event;
-    sc->recv = smbus_i2c_recv;
-    sc->send = smbus_i2c_send;
-}
-
-static const TypeInfo smbus_device_type_info = {
-    .name = TYPE_SMBUS_DEVICE,
-    .parent = TYPE_I2C_SLAVE,
-    .instance_size = sizeof(SMBusDevice),
-    .abstract = true,
-    .class_size = sizeof(SMBusDeviceClass),
-    .class_init = smbus_device_class_init,
-};
-
-static void smbus_device_register_types(void)
-{
-    type_register_static(&smbus_device_type_info);
-}
-
-type_init(smbus_device_register_types)