static int snd_cs8427_send_corudata(struct snd_i2c_device *device,
int udata,
unsigned char *ndata,
int count)
{
struct cs8427 *chip = device->private_data;
char *hw_data = udata ?
chip->playback.hw_udata : chip->playback.hw_status;
char data[32];
int err, idx;
if (!memcmp(hw_data, ndata, count))
return 0;
if ((err = snd_cs8427_select_corudata(device, udata)) < 0)
return err;
memcpy(hw_data, ndata, count);
if (udata) {
memset(data, 0, sizeof(data));
if (memcmp(hw_data, data, count) == 0) {
chip->regmap[CS8427_REG_UDATABUF] &= ~CS8427_UBMMASK;
chip->regmap[CS8427_REG_UDATABUF] |= CS8427_UBMZEROS |
CS8427_EFTUI;
err = snd_cs8427_reg_write(device, CS8427_REG_UDATABUF,
chip->regmap[CS8427_REG_UDATABUF]);
return err < 0 ? err : 0;
}
}
data[0] = CS8427_REG_AUTOINC | CS8427_REG_CORU_DATABUF;
for (idx = 0; idx < count; idx++)
data[idx + 1] = bitrev8(ndata[idx]);
if (snd_i2c_sendbytes(device, data, count + 1) != count + 1)
return -EIO;
return 1;
}
static int snd_cs8427_send_corudata(struct cs8427 *obj,
int udata,
unsigned char *ndata,
int count)
{
struct cs8427 *chip = obj;
char *hw_data = udata ?
chip->playback.hw_udata : chip->playback.hw_status;
char data[32];
int err, idx;
unsigned char addr = 0;
int ret = 0;
if (!memcmp(hw_data, ndata, count))
return 0;
err = snd_cs8427_select_corudata(chip, udata);
if (err < 0)
return err;
memcpy(hw_data, ndata, count);
if (udata) {
memset(data, 0, sizeof(data));
if (count > sizeof(data)) {
count = sizeof(data);
}
if (memcmp(hw_data, data, count) == 0) {
chip->regmap[CS8427_REG_UDATABUF] &= ~CS8427_UBMMASK;
chip->regmap[CS8427_REG_UDATABUF] |= CS8427_UBMZEROS |
CS8427_EFTUI;
err = cs8427_i2c_write(chip, CS8427_REG_UDATABUF,
1, &chip->regmap[CS8427_REG_UDATABUF]);
return err < 0 ? err : 0;
}
}
idx = 0;
memcpy(data, ndata, CHANNEL_STATUS_SIZE);
addr = 0x20;
ret = cs8427_i2c_sendbytes(chip, &addr, data, count);
if (ret != count)
return -EIO;
return 1;
}
