Il 20/12/24 04:47, CK Hu (胡俊光) ha scritto:
Hi, Angelo: On Tue, 2024-12-17 at 16:43 +0100, AngeloGioacchino Del Regno wrote:External email : Please do not click links or open attachments until you have verified the sender or the content. In preparation for splitting common bits of this driver, move the audio params (codec, sample rate/size, input type, i2s format, etc) selection to a new function called mtk_hdmi_audio_params(). Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> --- drivers/gpu/drm/mediatek/mtk_hdmi.c | 46 +++++++++++++++++------------ 1 file changed, 27 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index d2f1d6286fbc..8f5ab97a0261 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1479,12 +1479,11 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, * HDMI audio codec callbacks */ -static int mtk_hdmi_audio_hw_params(struct device *dev, void *data, - struct hdmi_codec_daifmt *daifmt, - struct hdmi_codec_params *params) +static int mtk_hdmi_audio_params(struct mtk_hdmi *hdmi, + struct hdmi_codec_daifmt *daifmt, + struct hdmi_codec_params *params) { - struct mtk_hdmi *hdmi = dev_get_drvdata(dev); - struct hdmi_audio_param hdmi_params; + struct hdmi_audio_param aud_params = { 0 }; unsigned int chan = params->cea.channels; dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__, @@ -1495,16 +1494,16 @@ static int mtk_hdmi_audio_hw_params(struct device *dev, void *data, switch (chan) { case 2: - hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0; + aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0; break; case 4: - hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0; + aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0; break; case 6: - hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1; + aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1; break; case 8: - hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1; + aud_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1; break; default: dev_err(hdmi->dev, "channel[%d] not supported!\n", chan); @@ -1528,26 +1527,35 @@ static int mtk_hdmi_audio_hw_params(struct device *dev, void *data, switch (daifmt->fmt) { case HDMI_I2S: - hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; - hdmi_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16; - hdmi_params.aud_input_type = HDMI_AUD_INPUT_I2S; - hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT; - hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS; + aud_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; + aud_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16; + aud_params.aud_input_type = HDMI_AUD_INPUT_I2S; + aud_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT; + aud_params.aud_mclk = HDMI_AUD_MCLK_128FS; break; case HDMI_SPDIF: - hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; - hdmi_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16; - hdmi_params.aud_input_type = HDMI_AUD_INPUT_SPDIF; + aud_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; + aud_params.aud_sample_size = HDMI_AUDIO_SAMPLE_SIZE_16; + aud_params.aud_input_type = HDMI_AUD_INPUT_SPDIF; break; default: dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__, daifmt->fmt); return -EINVAL; } + memcpy(&aud_params.codec_params, params, sizeof(aud_params.codec_params));You copy to local variable, so this function does nothing.+ + return 0; +} - memcpy(&hdmi_params.codec_params, params, - sizeof(hdmi_params.codec_params)); +static int mtk_hdmi_audio_hw_params(struct device *dev, void *data, + struct hdmi_codec_daifmt *daifmt, + struct hdmi_codec_params *params) +{ + struct mtk_hdmi *hdmi = dev_get_drvdata(dev); + struct hdmi_audio_param hdmi_params; + mtk_hdmi_audio_params(hdmi, daifmt, params); mtk_hdmi_audio_set_param(hdmi, &hdmi_params);hdmi_params has not been initialized.
That was done on purpose: we are anyway rewriting all fields of that structure with the call to mtk_hdmi_audio_set_param(), so if that was stack-initialized to zero, that would be a double initialization. Cheers, Angelo
