Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423166Ab3CVVOQ (ORCPT ); Fri, 22 Mar 2013 17:14:16 -0400 Received: from comal.ext.ti.com ([198.47.26.152]:44052 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423058Ab3CVVOO (ORCPT ); Fri, 22 Mar 2013 17:14:14 -0400 From: Eduardo Valentin To: Zhang Rui CC: , , Eduardo Valentin Subject: [PATCH 2/2] staging: ti-soc-thermal: remove external heat while extrapolating hotspot Date: Fri, 22 Mar 2013 17:13:07 -0400 Message-ID: <1363986787-28147-3-git-send-email-eduardo.valentin@ti.com> X-Mailer: git-send-email 1.7.7.1.488.ge8e1c In-Reply-To: <1363986787-28147-1-git-send-email-eduardo.valentin@ti.com> References: <1363986787-28147-1-git-send-email-eduardo.valentin@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1405 Lines: 37 For boards that provide a PCB sensor close to SoC junction temperature, it is possible to remove the cumulative heat reported by the SoC temperature sensor. This patch changes the extrapolation computation to consider an external sensor in the extrapolation equations. Signed-off-by: Eduardo Valentin --- drivers/staging/ti-soc-thermal/ti-thermal-common.c | 5 ++--- 1 files changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/staging/ti-soc-thermal/ti-thermal-common.c b/drivers/staging/ti-soc-thermal/ti-thermal-common.c index 231c549..52d3c1b 100644 --- a/drivers/staging/ti-soc-thermal/ti-thermal-common.c +++ b/drivers/staging/ti-soc-thermal/ti-thermal-common.c @@ -92,10 +92,9 @@ static inline int ti_thermal_get_temp(struct thermal_zone_device *thermal, if (ret) return ret; - pcb_temp = 0; - /* TODO: Introduce pcb temperature lookup */ + ret = thermal_zone_lookup_temperature("pcb", &pcb_temp); /* In case pcb zone is available, use the extrapolation rule with it */ - if (pcb_temp) { + if (!ret) { tmp -= pcb_temp; slope = s->slope_pcb; constant = s->constant_pcb; -- 1.7.7.1.488.ge8e1c -- 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/