VT1211_REG_PWM_CTL
val = vt1211_read8(data, VT1211_REG_PWM_CTL);
reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
vt1211_write8(data, VT1211_REG_PWM_CTL,
reg = vt1211_read8(data, VT1211_REG_PWM_CTL);
vt1211_write8(data, VT1211_REG_PWM_CTL,
reg = vt1211_read8(data, VT1211_REG_PWM_CTL);