Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752698AbbKZF5B (ORCPT ); Thu, 26 Nov 2015 00:57:01 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:51903 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752126AbbKZFzY (ORCPT ); Thu, 26 Nov 2015 00:55:24 -0500 From: Rajendra Nayak To: mturquette@baylibre.com, sboyd@codeaurora.org Cc: linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-msm@vger.kernel.org, Rajendra Nayak Subject: [PATCH 5/6] clk: qcom: gdsc: Do not check for disabled status on votable gdscs Date: Thu, 26 Nov 2015 11:24:56 +0530 Message-Id: <1448517297-32419-6-git-send-email-rnayak@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1448517297-32419-1-git-send-email-rnayak@codeaurora.org> References: <1448517297-32419-1-git-send-email-rnayak@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4126 Lines: 135 Some gdscs might be controlled via voting registers and might not really disable when the kernel intends to disable them (due to other votes keeping them enabled) Mark these gdscs with a flag for we do not check/wait on a disable status for these gdscs within the kernel disable callback. Signed-off-by: Rajendra Nayak --- drivers/clk/qcom/gcc-msm8996.c | 4 ++++ drivers/clk/qcom/gdsc.c | 4 ++++ drivers/clk/qcom/gdsc.h | 15 ++++++++------- drivers/clk/qcom/mmcc-msm8996.c | 3 +++ 4 files changed, 19 insertions(+), 7 deletions(-) diff --git a/drivers/clk/qcom/gcc-msm8996.c b/drivers/clk/qcom/gcc-msm8996.c index c5bce5f..bb8c61f 100644 --- a/drivers/clk/qcom/gcc-msm8996.c +++ b/drivers/clk/qcom/gcc-msm8996.c @@ -3067,6 +3067,7 @@ static struct gdsc aggre0_noc_gdsc = { .name = "aggre0_noc", }, .pwrsts = PWRSTS_OFF_ON, + .flags = VOTABLE, }; static struct gdsc hlos1_vote_aggre0_noc_gdsc = { @@ -3075,6 +3076,7 @@ static struct gdsc hlos1_vote_aggre0_noc_gdsc = { .name = "hlos1_vote_aggre0_noc", }, .pwrsts = PWRSTS_OFF_ON, + .flags = VOTABLE, }; static struct gdsc hlos1_vote_lpass_adsp_gdsc = { @@ -3083,6 +3085,7 @@ static struct gdsc hlos1_vote_lpass_adsp_gdsc = { .name = "hlos1_vote_lpass_adsp", }, .pwrsts = PWRSTS_OFF_ON, + .flags = VOTABLE, }; static struct gdsc hlos1_vote_lpass_core_gdsc = { @@ -3091,6 +3094,7 @@ static struct gdsc hlos1_vote_lpass_core_gdsc = { .name = "hlos1_vote_lpass_core", }, .pwrsts = PWRSTS_OFF_ON, + .flags = VOTABLE, }; static struct gdsc usb30_gdsc = { diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c index fb2e43c..984537f 100644 --- a/drivers/clk/qcom/gdsc.c +++ b/drivers/clk/qcom/gdsc.c @@ -65,6 +65,10 @@ static int gdsc_toggle_logic(struct gdsc *sc, bool en) if (ret) return ret; + /* If disabling votable gdscs, don't poll on status */ + if ((sc->flags & VOTABLE) && !en) + return 0; + timeout = jiffies + usecs_to_jiffies(TIMEOUT_US); if (sc->gds_hw_ctrl) { diff --git a/drivers/clk/qcom/gdsc.h b/drivers/clk/qcom/gdsc.h index 66a43be..91cbb09 100644 --- a/drivers/clk/qcom/gdsc.h +++ b/drivers/clk/qcom/gdsc.h @@ -20,13 +20,6 @@ struct regmap; struct reset_controller_dev; -/* Powerdomain allowable state bitfields */ -#define PWRSTS_OFF BIT(0) -#define PWRSTS_RET BIT(1) -#define PWRSTS_ON BIT(2) -#define PWRSTS_OFF_ON (PWRSTS_OFF | PWRSTS_ON) -#define PWRSTS_RET_ON (PWRSTS_RET | PWRSTS_ON) - /** * struct gdsc - Globally Distributed Switch Controller * @pd: generic power domain @@ -49,6 +42,14 @@ struct gdsc { unsigned int *cxcs; unsigned int cxc_count; const u8 pwrsts; +/* Powerdomain allowable state bitfields */ +#define PWRSTS_OFF BIT(0) +#define PWRSTS_RET BIT(1) +#define PWRSTS_ON BIT(2) +#define PWRSTS_OFF_ON (PWRSTS_OFF | PWRSTS_ON) +#define PWRSTS_RET_ON (PWRSTS_RET | PWRSTS_ON) + const u8 flags; +#define VOTABLE BIT(0) struct reset_controller_dev *rcdev; unsigned int *resets; unsigned int reset_count; diff --git a/drivers/clk/qcom/mmcc-msm8996.c b/drivers/clk/qcom/mmcc-msm8996.c index 236acf5..a0a7338 100644 --- a/drivers/clk/qcom/mmcc-msm8996.c +++ b/drivers/clk/qcom/mmcc-msm8996.c @@ -2925,6 +2925,7 @@ struct gdsc mmagic_video_gdsc = { .name = "mmagic_video", }, .pwrsts = PWRSTS_OFF_ON, + .flags = VOTABLE, }; struct gdsc mmagic_mdss_gdsc = { @@ -2934,6 +2935,7 @@ struct gdsc mmagic_mdss_gdsc = { .name = "mmagic_mdss", }, .pwrsts = PWRSTS_OFF_ON, + .flags = VOTABLE, }; struct gdsc mmagic_camss_gdsc = { @@ -2943,6 +2945,7 @@ struct gdsc mmagic_camss_gdsc = { .name = "mmagic_camss", }, .pwrsts = PWRSTS_OFF_ON, + .flags = VOTABLE, }; struct gdsc venus_gdsc = { -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/