From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from baptiste.telenet-ops.be ([195.130.132.51]:57934 "EHLO baptiste.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754565AbdKIN1R (ORCPT ); Thu, 9 Nov 2017 08:27:17 -0500 From: Geert Uytterhoeven To: "Rafael J . Wysocki" , Ulf Hansson , Kevin Hilman Cc: Michael Turquette , Stephen Boyd , Simon Horman , Magnus Damm , linux-pm@vger.kernel.org, linux-clk@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH v2 0/3] PM / Domain: renesas: Fix active wakeup behavior Date: Thu, 9 Nov 2017 14:26:59 +0100 Message-Id: <1510234022-29442-1-git-send-email-geert+renesas@glider.be> Sender: linux-renesas-soc-owner@vger.kernel.org List-ID: Hi Rafael, Ulf, Kevin, If a device in a Renesas ARM SoC is part of a Clock Domain, and it is used as a wakeup source, it must be kept active during system suspend. Currently this is handled in device-specific drivers by explicitly increasing the use count of the module clock when the device is configured as a wakeup source, or if it is part of the wakeup path. However, this is merely a workaround. The proper way to prevent the device from being stopped is to inform this requirement to the genpd core, using the new GENPD_FLAG_ACTIVE_WAKEUP flag introduced in commit 95a20ef6f7e54c6a ("PM / Domains: Allow genpd users to specify default active wakeup behavior"). Hence this series does that for PM Domain drivers used on R-Car, RZ/A1, RZ/G1 SoCs, mimicking what is already done succesfully on SH/R-Mobile SoCs. This will allow for the workarounds can be removed later. This series was extracted from "[PATCH 00/10] PM / Domain: renesas: Fix active wakeup behavior", and retains only fixes for Renesas PM Domain drivers. Changes compared to v1: - Integrate follow-up patches to use GENPD_FLAG_ACTIVE_WAKEUP instead of adding an "always true" callback. As GENPD_FLAG_ACTIVE_WAKEUP exists in pm/linux-next only, and this series is a dependency for the removal of workarounds in drivers of multiple subsystems (net, irqchip, and gpio), I think it is a good idea to still queue this for v4.15 in the PM tree, if possible. This has been tested on r8a73a4/ape6evm, r8a7740/armadillo, r8a7791/koelsch, r8a7795/salvator-x and -xs, r8a7795/salvator-x, and sh73a0/kzm9g. Thanks for applying! Geert Uytterhoeven (3): clk: renesas: mstp: Keep wakeup sources active during system suspend clk: renesas: cpg-mssr: Keep wakeup sources active during system suspend soc: renesas: rcar-sysc: Keep wakeup sources active during system suspend drivers/clk/renesas/clk-mstp.c | 2 +- drivers/clk/renesas/renesas-cpg-mssr.c | 2 +- drivers/soc/renesas/rcar-sysc.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) -- 2.7.4 Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds