As of today, the only know user of the DSS HDMI audio support is ASoC. Hence, it makes sense to remap the speaker order to match the ALSA speaker order. In the future, a dynamic mapping mechanism may be implemented. Remapping is needed as the HDMI speaker order is FL/FR/LFE/C/RL/RR/ RLC-FLC/RRC-FLC while the ALSA order is FL/FR/RL/RR/C/LFE/SL/SR. Refer to CEA-861 Section 6.6.2 for further details. Signed-off-by: Ricardo Neri <ricardo.neri@xxxxxx> --- drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-) diff --git a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c index 74d9420..4dcdbbb 100644 --- a/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c +++ b/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c @@ -1154,6 +1154,14 @@ static void ti_hdmi_4xxx_core_audio_config(struct hdmi_ip_data *ip_data, r = FLD_MOD(r, cfg->en_parallel_aud_input, 2, 2); r = FLD_MOD(r, cfg->en_spdif, 1, 1); hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_MODE, r); + + /* Audio channel mappings */ + /* TODO: Make channel mapping dynamic. For now, map channels + * in the ALSA order: FL/FR/RL/RR/C/LFE/SL/SR. Remapping is needed as + * HDMI speaker order is different. See CEA-861 Section 6.6.2. + */ + hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_MAP, 0x78); + REG_FLD_MOD(av_base, HDMI_CORE_AV_SWAP_I2S, 1, 5, 5); } static void ti_hdmi_4xxx_core_audio_infoframe_cfg(struct hdmi_ip_data *ip_data, -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
