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([82.78.167.161]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-5d3e7936581sm4853124a12.56.2024.12.10.09.10.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Dec 2024 09:10:40 -0800 (PST) From: Claudiu X-Google-Original-From: Claudiu To: geert+renesas@glider.be, mturquette@baylibre.com, sboyd@kernel.org, robh+dt@kernel.org, lgirdwood@gmail.com, broonie@kernel.org, magnus.damm@gmail.com, perex@perex.cz, tiwai@suse.com, p.zabel@pengutronix.de, biju.das.jz@bp.renesas.com Cc: claudiu.beznea@tuxon.dev, linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org, Claudiu Beznea Subject: [PATCH v4 15/24] ASoC: renesas: rz-ssi: Add runtime PM support Date: Tue, 10 Dec 2024 19:09:44 +0200 Message-Id: <20241210170953.2936724-16-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20241210170953.2936724-1-claudiu.beznea.uj@bp.renesas.com> References: <20241210170953.2936724-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Claudiu Beznea Add runtime PM support to the ssi driver. This assert/de-assert the reset lines on runtime suspend/resume. Along with it the de-assertion of the reset line from probe function was removed as it is not necessary anymore. Reviewed-by: Geert Uytterhoeven Signed-off-by: Claudiu Beznea --- Changes in v4: - collected tags Changes in v3: - s/sh/renesas in patch title Changes in v2: - none sound/soc/renesas/rz-ssi.c | 26 +++++++++++++++++++++----- 1 file changed, 21 insertions(+), 5 deletions(-) diff --git a/sound/soc/renesas/rz-ssi.c b/sound/soc/renesas/rz-ssi.c index eebf2d647ef2..34c2e22b5a67 100644 --- a/sound/soc/renesas/rz-ssi.c +++ b/sound/soc/renesas/rz-ssi.c @@ -1139,14 +1139,13 @@ static int rz_ssi_probe(struct platform_device *pde= v) goto err_release_dma_chs; } =20 - reset_control_deassert(ssi->rstc); /* Default 0 for power saving. Can be overridden via sysfs. */ pm_runtime_set_autosuspend_delay(dev, 0); pm_runtime_use_autosuspend(dev); ret =3D devm_pm_runtime_enable(dev); if (ret < 0) { dev_err(dev, "Failed to enable runtime PM!\n"); - goto err_reset; + goto err_release_dma_chs; } =20 ret =3D devm_snd_soc_register_component(dev, &rz_ssi_soc_component, @@ -1154,13 +1153,11 @@ static int rz_ssi_probe(struct platform_device *pde= v) ARRAY_SIZE(rz_ssi_soc_dai)); if (ret < 0) { dev_err(dev, "failed to register snd component\n"); - goto err_reset; + goto err_release_dma_chs; } =20 return 0; =20 -err_reset: - reset_control_assert(ssi->rstc); err_release_dma_chs: rz_ssi_release_dma_channels(ssi); =20 @@ -1182,10 +1179,29 @@ static const struct of_device_id rz_ssi_of_match[] = =3D { }; MODULE_DEVICE_TABLE(of, rz_ssi_of_match); =20 +static int rz_ssi_runtime_suspend(struct device *dev) +{ + struct rz_ssi_priv *ssi =3D dev_get_drvdata(dev); + + return reset_control_assert(ssi->rstc); +} + +static int rz_ssi_runtime_resume(struct device *dev) +{ + struct rz_ssi_priv *ssi =3D dev_get_drvdata(dev); + + return reset_control_deassert(ssi->rstc); +} + +static const struct dev_pm_ops rz_ssi_pm_ops =3D { + RUNTIME_PM_OPS(rz_ssi_runtime_suspend, rz_ssi_runtime_resume, NULL) +}; + static struct platform_driver rz_ssi_driver =3D { .driver =3D { .name =3D "rz-ssi-pcm-audio", .of_match_table =3D rz_ssi_of_match, + .pm =3D pm_ptr(&rz_ssi_pm_ops), }, .probe =3D rz_ssi_probe, .remove =3D rz_ssi_remove, --=20 2.39.2