diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/display/sm501.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/hw/display/sm501.c b/hw/display/sm501.c index f276276..569661a 100644 --- a/hw/display/sm501.c +++ b/hw/display/sm501.c @@ -1033,17 +1033,18 @@ static void sm501_i2c_write(void *opaque, hwaddr addr, uint64_t value, case SM501_I2C_CONTROL: if (value & SM501_I2C_CONTROL_ENABLE) { if (value & SM501_I2C_CONTROL_START) { + bool is_recv = s->i2c_addr & 1; int res = i2c_start_transfer(s->i2c_bus, s->i2c_addr >> 1, - s->i2c_addr & 1); + is_recv); if (res) { s->i2c_status |= SM501_I2C_STATUS_ERROR; } else { int i; for (i = 0; i <= s->i2c_byte_count; i++) { - res = i2c_send_recv(s->i2c_bus, &s->i2c_data[i], - !(s->i2c_addr & 1)); - if (res) { + if (is_recv) { + s->i2c_data[i] = i2c_recv(s->i2c_bus); + } else if (i2c_send(s->i2c_bus, s->i2c_data[i]) < 0) { s->i2c_status |= SM501_I2C_STATUS_ERROR; return; } |