On Tue, Aug 02, 2016 at 03:05:07PM +0300, Jyri Sarha wrote: > @@ -787,19 +792,13 @@ tda998x_configure_audio(struct tda998x_priv *priv, > reg_clear(priv, REG_AIP_CNTRL_0, AIP_CNTRL_0_RST_CTS); > > /* Write the channel status */ > - buf[0] = IEC958_AES0_CON_NOT_COPYRIGHT; > - buf[1] = 0x00; > - buf[2] = IEC958_AES3_CON_FS_NOTID; > - buf[3] = IEC958_AES4_CON_ORIGFS_NOTID | > - IEC958_AES4_CON_MAX_WORDLEN_24; > - reg_write_range(priv, REG_CH_STAT_B(0), buf, 4); > + reg_write_range(priv, REG_CH_STAT_B(0), params->status, 4);
Another couple of points here: 1. I think we should only write the channel status if I2S mode is selected - channel status won't be used on SPDIF mode as SPDIF supplies its own channel status. 2. I think we should continue writing all the channel status in a single I2C transaction, and not breaking it into several different transactions to cater for the odd register order. I don't have any direct evidence that one way is better than the other in terms of atomicity of the update, but I think having it as a single transaction stands a better chance of the chip atomically updating the channel status. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.
