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a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1700567808; bh=XEVVBoXHkUpKz+mYu2BhuD+v7qTvXaba6bcEiQ5SYSg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GYYbo9QldXFXkudLNK5rBpyLOm3Syq0rkmS15Dw5elqhdCQEjLJ8kZzlIAH/9feSQ fKlAppZeczG0BvHBMcVMzFWOKlTqcdLR38gs+mDI8TFzbgqxnvL3+7ke7vlfaIarOE WD4+zgmW1iKsLDiocSUyAnRL7xZwxGw2tTmygpebAcSBxHok6hcBdGsl3UxPU4RhG9 8XEQk0x8kv80N5b4iMA7KyObYnlaCUOR78JlP1dzoe2MuBlgaduv01uzC1TJkOv2/K NbRxwgmUpxDmArQm49ItmhnUMfHWIiHPkJZFJP92lDNXXN9DWJqILJhvwM+4X/RRD7 +oX/uQYLfW/Jg== From: AngeloGioacchino Del Regno To: matthias.bgg@gmail.com Cc: krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, robh+dt@kernel.org, angelogioacchino.delregno@collabora.com, p.zabel@pengutronix.de, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, kernel@collabora.com, wenst@chromium.org Subject: [PATCH v2 16/20] soc: mediatek: mtk-svs: Check if SVS mode is available in the beginning Date: Tue, 21 Nov 2023 12:56:20 +0100 Message-ID: <20231121115624.56855-17-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231121115624.56855-1-angelogioacchino.delregno@collabora.com> References: <20231121115624.56855-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231121_115652_862394_04D362E7 X-CRM114-Status: GOOD ( 13.66 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org The svs_init01() and svs_init02() functions are already checking if the INIT01 and INIT02 modes are available - but that's done in for loops and for each SVS bank. Give those a shortcut to get out early if no SVS bank features the desired init mode: this is especially done to avoid some locking in the svs_init01(), but also to avoid multiple for loops to check the same, when no bank supports a specific mode. Signed-off-by: AngeloGioacchino Del Regno --- drivers/soc/mediatek/mtk-svs.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c index ae0cc22a2941..16a16c5a3f24 100644 --- a/drivers/soc/mediatek/mtk-svs.c +++ b/drivers/soc/mediatek/mtk-svs.c @@ -1400,6 +1400,16 @@ static irqreturn_t svs_isr(int irq, void *data) return IRQ_HANDLED; } +static bool svs_mode_available(struct svs_platform *svsp, u8 mode) +{ + int i; + + for (i = 0; i < svsp->bank_max; i++) + if (svsp->banks[i].mode_support & mode) + return true; + return false; +} + static int svs_init01(struct svs_platform *svsp) { struct svs_bank *svsb; @@ -1408,6 +1418,9 @@ static int svs_init01(struct svs_platform *svsp) int ret = 0, r; u32 opp_freq, opp_vboot, buck_volt, idx, i; + if (!svs_mode_available(svsp, SVSB_MODE_INIT01)) + return 0; + /* Keep CPUs' core power on for svs_init01 initialization */ cpuidle_pause_and_lock(); @@ -1575,6 +1588,9 @@ static int svs_init02(struct svs_platform *svsp) int ret; u32 idx; + if (!svs_mode_available(svsp, SVSB_MODE_INIT02)) + return 0; + for (idx = 0; idx < svsp->bank_max; idx++) { svsb = &svsp->banks[idx];