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[2a00:1028:8382:206::bc0]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48dfd503862sm4154979f8f.46.2026.10.16.03.34.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Oct 2026 03:34:16 -0700 (PDT) From: =?utf-8?q?Roman_Smr=C5=BE?= Date: Fri, 16 Oct 2026 12:33:55 +0200 Subject: [PATCH v2 2/5] ASoC: pcm179x: Refactor regmap value lookup Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20261016-work-v2-2-9340b9555fbb@amarulasolutions.com> References: <20261016-work-v2-0-9340b9555fbb@amarulasolutions.com> In-Reply-To: <20261016-work-v2-0-9340b9555fbb@amarulasolutions.com> To: Peter Rosin , =?utf-8?q?Martin_Povi=C5=A1er?= , Lars-Peter Clausen , =?utf-8?q?Nuno_S=C3=A1?= , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shenghao Ding , Kevin Lu , Baojun Xu , Sen Wang , Jaroslav Kysela , Takashi Iwai Cc: asahi@lists.linux.dev, linux-sound@vger.kernel.org, patches@opensource.cirrus.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-amarula@amarulasolutions.com, =?utf-8?q?Roman_Smr=C5=BE?= X-Mailer: b4 0.16.0 Use a table lookup to find values for fmt register instead of switch statements to prepare for additional codec variants of the same family. Signed-off-by: Roman Smrž --- sound/soc/codecs/pcm179x.c | 60 +++++++++++++++++++++++----------------------- 1 file changed, 30 insertions(+), 30 deletions(-) diff --git a/sound/soc/codecs/pcm179x.c b/sound/soc/codecs/pcm179x.c index cb70927872aa..61b87dab3266 100644 --- a/sound/soc/codecs/pcm179x.c +++ b/sound/soc/codecs/pcm179x.c @@ -65,6 +65,31 @@ struct pcm179x_private { unsigned int rate; }; +struct pcm179x_fmt_table { + unsigned int fmt; /* SND_SOC_DAIFMT_* */ + unsigned int width; /* sample width in bits */ + unsigned int value; /* FMT[2:0] */ +}; + +static const struct pcm179x_fmt_table pcm1792a_fmt[] = { + { SND_SOC_DAIFMT_RIGHT_J, 16, 0 }, + { SND_SOC_DAIFMT_RIGHT_J, 24, 2 }, + { SND_SOC_DAIFMT_RIGHT_J, 32, 2 }, + { SND_SOC_DAIFMT_I2S, 16, 4 }, + { SND_SOC_DAIFMT_I2S, 24, 5 }, + { SND_SOC_DAIFMT_I2S, 32, 5 }, +}; + +static int pcm179x_fmt_value(struct pcm179x_private *priv, unsigned int fmt, + unsigned int width) +{ + for (unsigned int i = 0; i < ARRAY_SIZE(pcm1792a_fmt); i++) + if (pcm1792a_fmt[i].fmt == fmt && pcm1792a_fmt[i].width == width) + return pcm1792a_fmt[i].value; + + return -EINVAL; +} + static int pcm179x_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int format) { @@ -96,40 +121,15 @@ static int pcm179x_hw_params(struct snd_pcm_substream *substream, { struct snd_soc_component *component = dai->component; struct pcm179x_private *priv = snd_soc_component_get_drvdata(component); - int val = 0, ret; + int val, ret; priv->rate = params_rate(params); - switch (priv->format & SND_SOC_DAIFMT_FORMAT_MASK) { - case SND_SOC_DAIFMT_RIGHT_J: - switch (params_width(params)) { - case 24: - case 32: - val = 2; - break; - case 16: - val = 0; - break; - default: - return -EINVAL; - } - break; - case SND_SOC_DAIFMT_I2S: - switch (params_width(params)) { - case 24: - case 32: - val = 5; - break; - case 16: - val = 4; - break; - default: - return -EINVAL; - } - break; - default: + val = pcm179x_fmt_value(priv, priv->format & SND_SOC_DAIFMT_FORMAT_MASK, + params_width(params)); + if (val < 0) { dev_err(component->dev, "Invalid DAI format\n"); - return -EINVAL; + return val; } val = val << PCM179X_FMT_SHIFT | PCM179X_ATLD_ENABLE; -- 2.55.0