/* FIXME: Implement join handling correctly */
static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
const struct i2c_msg *msg, int joined_rlen)
{
int i, strobe = 0;
struct au0828_dev *dev = i2c_adap->algo_data;
dprintk(4, "%s()\n", __func__);
au0828_write(dev, REG_2FF, 0x01);
au0828_write(dev, REG_202, 0x07);
/* Hardware needs 8 bit addresses */
au0828_write(dev, REG_203, msg->addr << 1);
dprintk(4, "SEND: %02x\n", msg->addr);
for (i = 0; i < msg->len;) {
dprintk(4, " %02x\n", msg->buf[i]);
au0828_write(dev, REG_205, msg->buf[i]);
strobe++;
i++;
if ((strobe >= 4) || (i >= msg->len)) {
/* Strobe the byte into the bus */
if (i < msg->len)
au0828_write(dev, REG_200, 0x41);
else
au0828_write(dev, REG_200, 0x01);
/* Reset strobe trigger */
strobe = 0;
if (!i2c_wait_write_done(i2c_adap))
return -EIO;
}
}
if (!i2c_wait_done(i2c_adap))
return -EIO;
dprintk(4, "\n");
return msg->len;
}
/* FIXME: Implement join handling correctly */
static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
const struct i2c_msg *msg, int joined_rlen)
{
int i, strobe = 0;
struct au0828_dev *dev = i2c_adap->algo_data;
dprintk(4, "%s()\n", __func__);
au0828_write(dev, AU0828_I2C_MULTIBYTE_MODE_2FF, 0x01);
/* Set the I2C clock */
au0828_write(dev, AU0828_I2C_CLK_DIVIDER_202,
dev->board.i2c_clk_divider);
/* Hardware needs 8 bit addresses */
au0828_write(dev, AU0828_I2C_DEST_ADDR_203, msg->addr << 1);
dprintk(4, "SEND: %02x\n", msg->addr);
/* Deal with i2c_scan */
if (msg->len == 0) {
/* The analog tuner detection code makes use of the SMBUS_QUICK
message (which involves a zero length i2c write). To avoid
checking the status register when we didn't strobe out any
actual bytes to the bus, just do a read check. This is
consistent with how I saw i2c device checking done in the
USB trace of the Windows driver */
au0828_write(dev, AU0828_I2C_TRIGGER_200,
AU0828_I2C_TRIGGER_READ);
if (!i2c_wait_done(i2c_adap))
return -EIO;
if (i2c_wait_read_ack(i2c_adap))
return -EIO;
return 0;
}
for (i = 0; i < msg->len;) {
dprintk(4, " %02x\n", msg->buf[i]);
au0828_write(dev, AU0828_I2C_WRITE_FIFO_205, msg->buf[i]);
strobe++;
i++;
if ((strobe >= 4) || (i >= msg->len)) {
/* Strobe the byte into the bus */
if (i < msg->len)
au0828_write(dev, AU0828_I2C_TRIGGER_200,
AU0828_I2C_TRIGGER_WRITE |
AU0828_I2C_TRIGGER_HOLD);
else
au0828_write(dev, AU0828_I2C_TRIGGER_200,
AU0828_I2C_TRIGGER_WRITE);
/* Reset strobe trigger */
strobe = 0;
if (!i2c_wait_write_done(i2c_adap))
return -EIO;
}
}
if (!i2c_wait_done(i2c_adap))
return -EIO;
dprintk(4, "\n");
return msg->len;
}
static int i2c_sendbytes(struct i2c_adapter *i2c_adap,
const struct i2c_msg *msg, int joined_rlen)
{
int i, strobe = 0;
struct au0828_dev *dev = i2c_adap->algo_data;
dprintk(4, "%s()\n", __func__);
au0828_write(dev, AU0828_I2C_MULTIBYTE_MODE_2FF, 0x01);
au0828_write(dev, AU0828_I2C_CLK_DIVIDER_202,
dev->board.i2c_clk_divider);
au0828_write(dev, AU0828_I2C_DEST_ADDR_203, msg->addr << 1);
dprintk(4, "SEND: %02x\n", msg->addr);
if (msg->len == 0) {
au0828_write(dev, AU0828_I2C_TRIGGER_200,
AU0828_I2C_TRIGGER_READ);
if (!i2c_wait_done(i2c_adap))
return -EIO;
if (i2c_wait_read_ack(i2c_adap))
return -EIO;
return 0;
}
for (i = 0; i < msg->len;) {
dprintk(4, " %02x\n", msg->buf[i]);
au0828_write(dev, AU0828_I2C_WRITE_FIFO_205, msg->buf[i]);
strobe++;
i++;
if ((strobe >= 4) || (i >= msg->len)) {
if (i < msg->len)
au0828_write(dev, AU0828_I2C_TRIGGER_200,
AU0828_I2C_TRIGGER_WRITE |
AU0828_I2C_TRIGGER_HOLD);
else
au0828_write(dev, AU0828_I2C_TRIGGER_200,
AU0828_I2C_TRIGGER_WRITE);
strobe = 0;
if (!i2c_wait_write_done(i2c_adap))
return -EIO;
}
}
if (!i2c_wait_done(i2c_adap))
return -EIO;
dprintk(4, "\n");
return msg->len;
}
