From patchwork Thu Jan 11 09:30:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sunil V L X-Patchwork-Id: 761878 Received: from mail-pl1-f180.google.com (mail-pl1-f180.google.com [209.85.214.180]) (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 6936611722 for ; Thu, 11 Jan 2024 09:31:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ventanamicro.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ventanamicro.com header.i=@ventanamicro.com header.b="nystDnn5" Received: by mail-pl1-f180.google.com with SMTP id d9443c01a7336-1d3e8a51e6bso40924995ad.3 for ; Thu, 11 Jan 2024 01:31:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1704965466; x=1705570266; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=0u2ZqaYTukKS/ErfsgIWqLBT0BekDb7tY/EUWordXcQ=; b=nystDnn5QuSvip3d60xSy0rBgMQrJnJMPbGIEhWktq1Bur8GW0CDK/UMU/9o1ZyZjM iFzPBHBFRPzOx3MGYetwX68u3Ohy5Y/H5BqOj677k0f0Kv+2YOvaVDffmPxGMkTIxv4U Z9hOP9Cu5eI32TZ7Sd0f0UVQ5sGRrSQR10M3n5oj2qAXvQy3GxgON3vpWgdUb+P5V5Ez m00Ps2TfSrOcMkSl4wRcrFBXf3YUvUOUjqYPHxIq7R8D6cH+sSSQ8xWV3qc92lJCJWUJ x32//+koXUakHI39WmiQp7ZUToznzUL382cRvaoTaTFAvQUbHH9MEdDzHBRn/t8RX4BK TroQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704965466; x=1705570266; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=0u2ZqaYTukKS/ErfsgIWqLBT0BekDb7tY/EUWordXcQ=; b=bXlToRLpjDJ955wxmqeEkCxrjtk4HSpQzCyEx/malcPIHaGxZCZpeFwbtN94JEPMgg XYGjQYDJ1tJ24HVPFIhRqSKO54jDHw2AI1jYcxomVPA0KE5kMaMYMKfkE0t4GP+Skzua onRMXSha3Ruxnw1RD/FSx3WzkEROVopSnYzViDxvvru4xrm9ZPJSZ14kZsFCqFlD0s0E wRDyE23euXXaCAVK60VasjYgWM5DsY+rPAncspyAbUL4S0iJob3geanp1VAHM3y8PI/e Kz+BWQO33vVmq8AAEqNx/TU8rL2o1y3/NXH63L5Sl4Cg7DEAOFs/hSbN4dDkn36Q/NHV 8/9Q== X-Gm-Message-State: AOJu0YxX3SF6dSAjKkGG3WjbjBjdACSL1SQcS7VnCHgSHeGhc9rBRbmY ytMtsoD+mjYwn7F7sfoYsXJcgYeAtPkT85AH8xDHXchqseSd8g== X-Google-Smtp-Source: AGHT+IFdmA3NHb1ER4UFaUxR1jSr/olfCSoHwNY32G7qcH3iYgX8OKA4O85XbeUboGgxDYYmHv1L3Q== X-Received: by 2002:a17:902:bb16:b0:1d4:e208:9b0 with SMTP id im22-20020a170902bb1600b001d4e20809b0mr880703plb.44.1704965466610; Thu, 11 Jan 2024 01:31:06 -0800 (PST) Received: from sunil-laptop.. ([106.51.188.200]) by smtp.gmail.com with ESMTPSA id jd2-20020a170903260200b001d4a7cf0673sm730566plb.117.2024.01.11.01.31.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Jan 2024 01:31:06 -0800 (PST) From: Sunil V L To: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-riscv@lists.infradead.org Cc: "Rafael J . Wysocki" , Len Brown , Anup Patel , Daniel Lezcano , Paul Walmsley , Palmer Dabbelt , Albert Ou , Conor Dooley , Andrew Jones , Atish Kumar Patra , Sunil V L Subject: [PATCH -next 0/2] RISC-V: ACPI: Add LPI support Date: Thu, 11 Jan 2024 15:00:56 +0530 Message-Id: <20240111093058.121838-1-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 This series adds support for Low Power Idle (LPI) on ACPI based platforms. LPI is described in the ACPI spec [1]. RISC-V FFH spec required to enable this is available at [2]. [1] - https://uefi.org/specs/ACPI/6.5/08_Processor_Configuration_and_Control.html#lpi-low-power-idle-states [2] - https://github.com/riscv-non-isa/riscv-acpi-ffh/releases/download/v/riscv-ffh.pdf Sunil V L (2): ACPI: Enable ACPI_PROCESSOR for RISC-V cpuidle: RISC-V: Add ACPI LPI support drivers/acpi/Kconfig | 2 +- drivers/cpuidle/cpuidle-riscv-sbi.c | 78 +++++++++++++++++++++++++++++ 2 files changed, 79 insertions(+), 1 deletion(-) Reviewed-by: Andrew Jones