From patchwork Tue Jun 25 12:13:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claudiu X-Patchwork-Id: 13710993 Received: from mail-wm1-f50.google.com (mail-wm1-f50.google.com [209.85.128.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 91E2715ADBB for ; Tue, 25 Jun 2024 12:14:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.50 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719317672; cv=none; b=XAyB9k5dWwJEWM8G2zw7cEyDvsAE8WbW7Nq+jAHX7EoA+JVGsjXqX4DS6wgDjiyB6yak4gpCY2/uppGr/fxEZGAxcejgH9GaEzCRnX4wVatq9q7ng1ybsTrSd+MoErkBL+szUG1g4yaPHWvipRi7XJfaMpv6XZuTjkD7VEEXxvE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719317672; c=relaxed/simple; bh=SZFI7ieRlfDHIKjUHJb4mAmP9g299cNGVbuTRzb5QhQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=UvAovRy2FMHRYQexlOJAHRmVOY+bqUB8KsxA01XyaqTQSkQTMbIVsFs2QHSnD+B4GsHoP9WV9OrkD9IuLHA3Pn5y5AxYn4uvEFJC+Xc8sXXSU0aVIrTAeYgnzfo4yR7bYAWS+5RAv9zmYK2xsWIliqZQJFk04oD423qglqYHDXw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=tuxon.dev; spf=pass smtp.mailfrom=tuxon.dev; dkim=pass (2048-bit key) header.d=tuxon.dev header.i=@tuxon.dev header.b=nvheh0W+; arc=none smtp.client-ip=209.85.128.50 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=tuxon.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=tuxon.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=tuxon.dev header.i=@tuxon.dev header.b="nvheh0W+" Received: by mail-wm1-f50.google.com with SMTP id 5b1f17b1804b1-424a3411edeso3902165e9.0 for ; Tue, 25 Jun 2024 05:14:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tuxon.dev; s=google; t=1719317669; x=1719922469; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=r/s4zhle7xfM5JgZ6DVzSJAJxVkhzCO478oqgIVbef0=; b=nvheh0W+tCwhGR9F4YIII7JDMbs+0KqPXogFCHq+En1VWvmkk1rPbtWFUI2QiY9TwO /LaKKhIEZFLe4bFVBFqN9aK8hxXL5ce43ppfWLhpfQH/5iskRyVjsX9m7h4nr1pKLPWm v35tCQ5H9VEKe9OnHxCFSZEaxQoe80pt6N2hZWdMYbkflUX+QK5YxS3WY/STtvJ4Yepe 8ftUIqRT7WF7dMgolAQeBri5AuPPRT2m8YnoYyr4ACS3IbrpthH7ZfHr5Yt2tY/CxplI MhWKM22Qeq0iQ8LU4F70msOQX3gvAlbezq33WPkTdL+84/01jCjkRzEDvNoGxzGUNpXh Skfg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1719317669; x=1719922469; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=r/s4zhle7xfM5JgZ6DVzSJAJxVkhzCO478oqgIVbef0=; b=YEN3PERb34F8pgce9zRGEiIRawqrJZSMQ4j03nxJ5N7wC90IorkgThpB663S4805HT LdZKcm9F/ORYFV2qqLyJel0Na4T66T7/C/KqJYx6rgBs58u3GrKGNER1Fq8dzpk7pDW4 BLnE7pEd+46K0LkowJJMAWib0cuYxACuEqmZVPuNC139JmrL8kHgI088N+xfqmrDJPOr AK+C9W3MlCA/srprCmsa8d8G6eaXmk1c2MxE7LRr/uTho4wayFRdjb7cwjFiXE3e/u5t 4z8EN/L9FTb2WbWyCfcUkTQqX93GQMu0yG676Nb34hi9Lxz8R13yRk5/TjXu2xCBlk4V PyEQ== X-Forwarded-Encrypted: i=1; AJvYcCVk7CTm5085JsTWvEBjQ5MCgHubRZTltCWiiL8EvVbzZWQpqRsaG/vLqNePtkGyxZhl5SwDAaNcIDDkXCIV8i37/nNg/lf2F/sF X-Gm-Message-State: AOJu0Yw9Ry/J2cOYUoNFCPZ81WQC0M8naoaqX0h7IfMo4w4Cj7A0dlfW cfX4Jv6FbnDjMXyYybom3GiBOvaBvmtEH+anQnb+wwSaidQ07vaB+G4yOlXECeg= X-Google-Smtp-Source: AGHT+IGpK4KFob/8uwg9NoIk3lwn/csQ1kMUYHL5YqxKv1iS3jSCBr+2jObM0uKgM6FoY7LcYXKjjQ== X-Received: by 2002:a05:600c:4185:b0:424:a516:13f8 with SMTP id 5b1f17b1804b1-424a516147cmr8586235e9.35.1719317669074; Tue, 25 Jun 2024 05:14:29 -0700 (PDT) Received: from claudiu-X670E-Pro-RS.. ([82.78.167.70]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3663a8c8b32sm12798437f8f.92.2024.06.25.05.14.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Jun 2024 05:14:28 -0700 (PDT) From: Claudiu X-Google-Original-From: Claudiu To: chris.brandt@renesas.com, andi.shyti@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, geert+renesas@glider.be, magnus.damm@gmail.com, mturquette@baylibre.com, sboyd@kernel.org, p.zabel@pengutronix.de, wsa+renesas@sang-engineering.com Cc: linux-renesas-soc@vger.kernel.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, claudiu.beznea@tuxon.dev, Claudiu Beznea Subject: [PATCH v2 05/12] i2c: riic: Enable runtime PM autosuspend support Date: Tue, 25 Jun 2024 15:13:51 +0300 Message-Id: <20240625121358.590547-6-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240625121358.590547-1-claudiu.beznea.uj@bp.renesas.com> References: <20240625121358.590547-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Claudiu Beznea Enable runtime PM autosuspend support for the RIIC driver. With this, in case there are consecutive xfer requests the device wouldn't be runtime enabled/disabled after each consecutive xfer but after the the delay configured by user. With this, we can avoid touching hardware registers involved in runtime PM suspend/resume saving in this way some cycles. The default chosen autosuspend delay is zero to keep the previous driver behavior. Signed-off-by: Claudiu Beznea --- Changes in v2: - none drivers/i2c/busses/i2c-riic.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index 002b11b020fa..24c0d62544fb 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -175,7 +175,8 @@ static int riic_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num) } out: - pm_runtime_put(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); return riic->err ?: num; } @@ -405,7 +406,8 @@ static int riic_init_hw(struct riic_dev *riic, struct i2c_timings *t) riic_clear_set_bit(riic, ICCR1_IICRST, 0, RIIC_ICCR1); - pm_runtime_put(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_autosuspend(dev); return 0; } @@ -485,6 +487,8 @@ static int riic_i2c_probe(struct platform_device *pdev) i2c_parse_fw_timings(dev, &i2c_t, true); + pm_runtime_set_autosuspend_delay(dev, 0); + pm_runtime_use_autosuspend(dev); pm_runtime_enable(dev); ret = riic_init_hw(riic, &i2c_t); @@ -502,6 +506,7 @@ static int riic_i2c_probe(struct platform_device *pdev) out: pm_runtime_disable(dev); + pm_runtime_dont_use_autosuspend(dev); return ret; } @@ -522,6 +527,7 @@ static void riic_i2c_remove(struct platform_device *pdev) } pm_runtime_disable(dev); + pm_runtime_dont_use_autosuspend(dev); } static const struct riic_of_data riic_rz_a_info = {