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([183.91.15.56]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84282221059sm8594381b3a.7.2026.06.05.05.20.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Jun 2026 05:20:52 -0700 (PDT) From: phucduc.bui@gmail.com To: Kuninori Morimoto , Mark Brown , Geert Uytterhoeven Cc: Liam Girdwood , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Magnus Damm , Jaroslav Kysela , Takashi Iwai , linux-sound@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, bui duc phuc Subject: [PATCH v4 08/10] ASoC: renesas: fsi: refactor clock initialization Date: Fri, 5 Jun 2026 19:19:52 +0700 Message-ID: <20260605121955.105661-9-phucduc.bui@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260605121955.105661-1-phucduc.bui@gmail.com> References: <20260605121955.105661-1-phucduc.bui@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: bui duc phuc Move fsi_clk_init() from set_fmt() to probe. This moves clock resource lookup from fsi_dai_set_fmt() to the probe path. The set_rate() callbacks validate that the required clock resources are available before they are used for hardware configuration. Suggested-by: Kuninori Morimoto Signed-off-by: bui duc phuc --- Changes in v4: - Handle the return value of fsi_clk_init() to properly support deferred probe, as suggested by Mark. sound/soc/renesas/fsi.c | 52 +++++++++++++++++++++++++++-------------- 1 file changed, 35 insertions(+), 17 deletions(-) diff --git a/sound/soc/renesas/fsi.c b/sound/soc/renesas/fsi.c index a2d7d17dd2bb..3f303e15e835 100644 --- a/sound/soc/renesas/fsi.c +++ b/sound/soc/renesas/fsi.c @@ -292,6 +292,7 @@ struct fsi_master { void __iomem *base; struct fsi_priv fsia; struct fsi_priv fsib; + struct clk *clk_spu; const struct fsi_core *core; spinlock_t lock; }; @@ -862,6 +863,11 @@ static int fsi_clk_set_rate_external(struct device *dev, int ackmd, bpfmd; int ret = 0; + if (!xck || !ick) { + dev_err(dev, "xck clock or ick clock is missing\n"); + return -EINVAL; + } + /* check clock rate */ xrate = clk_get_rate(xck); if (xrate % rate) { @@ -898,6 +904,11 @@ static int fsi_clk_set_rate_cpg(struct device *dev, int ackmd, bpfmd; int ret = -EINVAL; + if (!ick || !div) { + dev_err(dev, "ick clock or div clock is missing\n"); + return -EINVAL; + } + if (!(12288000 % rate)) target = 12288000; if (!(11289600 % rate)) @@ -970,28 +981,38 @@ static int fsi_clk_set_rate_cpg(struct device *dev, return ret; } -static int fsi_clk_init(struct device *dev, - struct fsi_priv *fsi, - int xck, - int ick, - int div, - int (*set_rate)(struct device *dev, - struct fsi_priv *fsi)) +static int fsi_clk_init(struct device *dev, struct fsi_priv *fsi) { struct fsi_clk *clock = &fsi->clock; + struct fsi_master *master = fsi->master; int is_porta = fsi_is_port_a(fsi); + int xck, ick, div; + + if (fsi->clk_cpg) { + xck = 0; ick = 1; div = 1; + clock->set_rate = fsi_clk_set_rate_cpg; + } else { + xck = 1; ick = 1; div = 0; + clock->set_rate = fsi_clk_set_rate_external; + } clock->xck = NULL; clock->ick = NULL; clock->div = NULL; clock->rate = 0; clock->count = 0; - clock->set_rate = set_rate; clock->own = devm_clk_get(dev, NULL); if (IS_ERR(clock->own)) return dev_err_probe(dev, PTR_ERR(clock->own), "Can't get fck clock\n"); + if (!master->clk_spu) { + master->clk_spu = devm_clk_get_optional(dev, "spu"); + if (IS_ERR(master->clk_spu)) + return dev_err_probe(dev, PTR_ERR(master->clk_spu), + "Can't get spu clock\n"); + } + /* external clock */ if (xck) { clock->xck = devm_clk_get_optional(dev, is_porta ? "xcka" : "xckb"); @@ -1666,15 +1687,6 @@ static int fsi_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) break; } - if (fsi_is_clk_master(fsi)) { - if (fsi->clk_cpg) - fsi_clk_init(dai->dev, fsi, 0, 1, 1, - fsi_clk_set_rate_cpg); - else - fsi_clk_init(dai->dev, fsi, 1, 1, 0, - fsi_clk_set_rate_external); - } - /* set format */ if (fsi_is_spdif(fsi)) ret = fsi_set_fmt_spdif(fsi); @@ -1972,6 +1984,9 @@ static int fsi_probe(struct platform_device *pdev) fsi->master = master; fsi_port_info_init(fsi, &info.port_a); fsi_handler_init(fsi, &info.port_a); + ret = fsi_clk_init(&pdev->dev, fsi); + if (ret) + return ret; ret = fsi_stream_probe(fsi, &pdev->dev); if (ret < 0) { dev_err(&pdev->dev, "FSIA stream probe failed\n"); @@ -1985,6 +2000,9 @@ static int fsi_probe(struct platform_device *pdev) fsi->master = master; fsi_port_info_init(fsi, &info.port_b); fsi_handler_init(fsi, &info.port_b); + ret = fsi_clk_init(&pdev->dev, fsi); + if (ret) + return ret; ret = fsi_stream_probe(fsi, &pdev->dev); if (ret < 0) { dev_err(&pdev->dev, "FSIB stream probe failed\n"); -- 2.43.0