linux-kernel - [PATCH 10/11] drm/vc4: hdmi: Remove redundant variables

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Date:   Fri,  7 May 2021 16:03:33 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Mark Brown <broonie@...nel.org>, Takashi Iwai <tiwai@...e.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        dri-devel@...ts.freedesktop.org,
        Daniel Vetter <daniel.vetter@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Maxime Ripard <maxime@...no.tech>
Cc:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        alsa-devel@...a-project.org, bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org,
        Maxime Ripard <mripard@...nel.org>,
        linux-kernel@...r.kernel.org,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Phil Elwell <phil@...pberrypi.com>,
        Tim Gover <tim.gover@...pberrypi.com>,
        Dom Cobley <dom@...pberrypi.com>,
        Daniel Vetter <daniel@...ll.ch>,
        linux-rpi-kernel@...ts.infradead.org, Eric Anholt <eric@...olt.net>
Subject: [PATCH 10/11] drm/vc4: hdmi: Remove redundant variables

Signed-off-by: Maxime Ripard <maxime@...no.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 19739b57d067..a5780da70c1c 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1008,12 +1008,13 @@ 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 >>
@@ -1025,12 +1026,11 @@ 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_encoder *encoder = &vc4_hdmi->encoder.base.base;
 	struct drm_crtc *crtc = encoder->crtc;
 	const struct drm_display_mode *mode = &crtc->state->adjusted_mode;
-	u32 samplerate = vc4_hdmi->audio.samplerate;
 	u32 n, cts;
 	u64 tmp;
 
@@ -1164,27 +1164,25 @@ 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;
@@ -1202,7 +1200,7 @@ 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);
 
@@ -1221,7 +1219,7 @@ 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, &params->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 fdee27faafa3..574f379faf93 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -108,8 +108,6 @@ 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;
-- 
2.31.1