From f143778d90829ac37e6a481772dc0f26e3071de7 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Wed, 7 Jul 2021 11:36:31 +0200 Subject: [PATCH] drm/vc4: hdmi: Remove redundant variables The vc4_hdmi_audio_prepare function and the functions it's calling have in several occurences multiple dereferences of either the sample rate or the number of channels. It turns out that these variables are also passed through the hdmi codec parameters structure. Convert all the users to use this structure, and if it's used multiple times use a variable to store it instead of dereferencing it every time. Reviewed-by: Nicolas Saenz Julienne Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20210707093632.1468127-1-maxime@cerno.tech --- drivers/gpu/drm/vc4/vc4_hdmi.c | 26 ++++++++++++-------------- drivers/gpu/drm/vc4/vc4_hdmi.h | 2 -- 2 files changed, 12 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index b20530cf6a23..8321238b3fe7 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -1184,12 +1184,13 @@ static u32 vc5_hdmi_channel_map(struct vc4_hdmi *vc4_hdmi, u32 channel_mask) } /* HDMI audio codec callbacks */ -static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi) +static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi, + unsigned int samplerate) { u32 hsm_clock = clk_get_rate(vc4_hdmi->audio_clock); unsigned long n, m; - rational_best_approximation(hsm_clock, vc4_hdmi->audio.samplerate, + rational_best_approximation(hsm_clock, samplerate, VC4_HD_MAI_SMP_N_MASK >> VC4_HD_MAI_SMP_N_SHIFT, (VC4_HD_MAI_SMP_M_MASK >> @@ -1201,12 +1202,11 @@ static void vc4_hdmi_audio_set_mai_clock(struct vc4_hdmi *vc4_hdmi) VC4_SET_FIELD(m - 1, VC4_HD_MAI_SMP_M)); } -static void vc4_hdmi_set_n_cts(struct vc4_hdmi *vc4_hdmi) +static void vc4_hdmi_set_n_cts(struct vc4_hdmi *vc4_hdmi, unsigned int samplerate) { struct drm_connector *connector = &vc4_hdmi->connector; struct drm_crtc *crtc = connector->state->crtc; const struct drm_display_mode *mode = &crtc->state->adjusted_mode; - u32 samplerate = vc4_hdmi->audio.samplerate; u32 n, cts; u64 tmp; @@ -1340,27 +1340,25 @@ static int vc4_hdmi_audio_prepare(struct device *dev, void *data, { struct vc4_hdmi *vc4_hdmi = dev_get_drvdata(dev); struct drm_encoder *encoder = &vc4_hdmi->encoder.base.base; + unsigned int sample_rate = params->sample_rate; + unsigned int channels = params->channels; u32 audio_packet_config, channel_mask; u32 channel_map; u32 mai_audio_format; u32 mai_sample_rate; dev_dbg(dev, "%s: %u Hz, %d bit, %d channels\n", __func__, - params->sample_rate, params->sample_width, - params->channels); - - vc4_hdmi->audio.channels = params->channels; - vc4_hdmi->audio.samplerate = params->sample_rate; + sample_rate, params->sample_width, channels); HDMI_WRITE(HDMI_MAI_CTL, - VC4_SET_FIELD(params->channels, VC4_HD_MAI_CTL_CHNUM) | + VC4_SET_FIELD(channels, VC4_HD_MAI_CTL_CHNUM) | VC4_HD_MAI_CTL_WHOLSMP | VC4_HD_MAI_CTL_CHALIGN | VC4_HD_MAI_CTL_ENABLE); - vc4_hdmi_audio_set_mai_clock(vc4_hdmi); + vc4_hdmi_audio_set_mai_clock(vc4_hdmi, sample_rate); - mai_sample_rate = sample_rate_to_mai_fmt(vc4_hdmi->audio.samplerate); + mai_sample_rate = sample_rate_to_mai_fmt(sample_rate); if (params->iec.status[0] & IEC958_AES0_NONAUDIO && params->channels == 8) mai_audio_format = VC4_HDMI_MAI_FORMAT_HBR; @@ -1378,7 +1376,7 @@ static int vc4_hdmi_audio_prepare(struct device *dev, void *data, VC4_HDMI_AUDIO_PACKET_ZERO_DATA_ON_INACTIVE_CHANNELS | VC4_SET_FIELD(0x8, VC4_HDMI_AUDIO_PACKET_B_FRAME_IDENTIFIER); - channel_mask = GENMASK(vc4_hdmi->audio.channels - 1, 0); + channel_mask = GENMASK(channels - 1, 0); audio_packet_config |= VC4_SET_FIELD(channel_mask, VC4_HDMI_AUDIO_PACKET_CEA_MASK); @@ -1397,7 +1395,7 @@ static int vc4_hdmi_audio_prepare(struct device *dev, void *data, channel_map = vc4_hdmi->variant->channel_map(vc4_hdmi, channel_mask); HDMI_WRITE(HDMI_MAI_CHANNEL_MAP, channel_map); HDMI_WRITE(HDMI_AUDIO_PACKET_CONFIG, audio_packet_config); - vc4_hdmi_set_n_cts(vc4_hdmi); + vc4_hdmi_set_n_cts(vc4_hdmi, sample_rate); memcpy(&vc4_hdmi->audio.infoframe, ¶ms->cea, sizeof(params->cea)); vc4_hdmi_set_audio_infoframe(encoder); diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h index b6697b695f71..33e9f665ab8e 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.h +++ b/drivers/gpu/drm/vc4/vc4_hdmi.h @@ -111,8 +111,6 @@ struct vc4_hdmi_audio { struct snd_soc_dai_link_component cpu; struct snd_soc_dai_link_component codec; struct snd_soc_dai_link_component platform; - int samplerate; - int channels; struct snd_dmaengine_dai_dma_data dma_data; struct hdmi_audio_infoframe infoframe; bool streaming;