From patchwork Sun Jan 18 20:28:24 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Machek X-Patchwork-Id: 5654201 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 5A94B9F2ED for ; Sun, 18 Jan 2015 20:28:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 386A12035B for ; Sun, 18 Jan 2015 20:28:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DCDD9200DE for ; Sun, 18 Jan 2015 20:28:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752000AbbARU22 (ORCPT ); Sun, 18 Jan 2015 15:28:28 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:34296 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751873AbbARU21 (ORCPT ); Sun, 18 Jan 2015 15:28:27 -0500 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id D709B81CEA; Sun, 18 Jan 2015 21:28:24 +0100 (CET) Date: Sun, 18 Jan 2015 21:28:24 +0100 From: Pavel Machek To: edubezval@gmail.com, rui.zhang@intel.com, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-omap@vger.kernel.org Cc: pali.rohar@gmail.com, sre@debian.org, sre@ring0.de, linux-arm-kernel , linux-omap@vger.kernel.org, tony@atomide.com, khilman@kernel.org, aaro.koskinen@iki.fi, ivo.g.dimitrov.75@gmail.com Subject: [PATCHv2] thermal: add omap3 support Message-ID: <20150118202824.GB29014@amd> References: <20150103111146.GB7065@amd> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20150103111146.GB7065@amd> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for omap3430 sensor. Tested on Nokia N900. Fix help text to be closer to english. Ifdefs in ti-bandgap.h are not neccessary, as users have #ifdefs, already. Signed-off-by: Pavel Machek diff --git a/drivers/thermal/ti-soc-thermal/Kconfig b/drivers/thermal/ti-soc-thermal/Kconfig index bd4c7be..65c478e 100644 --- a/drivers/thermal/ti-soc-thermal/Kconfig +++ b/drivers/thermal/ti-soc-thermal/Kconfig @@ -21,13 +21,28 @@ config TI_THERMAL This includes trip points definitions, extrapolation rules and CPU cooling device bindings. +config OMAP3_THERMAL + bool "Texas Instruments OMAP3 thermal support" + depends on TI_SOC_THERMAL + depends on ARCH_OMAP3 + help + If you say yes here you get thermal support for the Texas Instruments + OMAP3 SoC family. The current chips supported are: + - OMAP3430 + + OMAP3 chips normally don't need thermal management, and sensors in + this generation are not very accurate, nor they are very close to + the important hotspots. + + Say 'N' here. + config OMAP4_THERMAL bool "Texas Instruments OMAP4 thermal support" depends on TI_SOC_THERMAL depends on ARCH_OMAP4 help If you say yes here you get thermal support for the Texas Instruments - OMAP4 SoC family. The current chip supported are: + OMAP4 SoC family. The current chips supported are: - OMAP4430 - OMAP4460 - OMAP4470 @@ -41,7 +56,7 @@ config OMAP5_THERMAL depends on SOC_OMAP5 help If you say yes here you get thermal support for the Texas Instruments - OMAP5 SoC family. The current chip supported are: + OMAP5 SoC family. The current chips supported are: - OMAP5430 This includes alert interrupts generation and also the TSHUT @@ -53,7 +68,7 @@ config DRA752_THERMAL depends on SOC_DRA7XX help If you say yes here you get thermal support for the Texas Instruments - DRA752 SoC family. The current chip supported are: + DRA752 SoC family. The current chips supported are: - DRA752 This includes alert interrupts generation and also the TSHUT diff --git a/drivers/thermal/ti-soc-thermal/Makefile b/drivers/thermal/ti-soc-thermal/Makefile index 1226b24..0f89bdf 100644 --- a/drivers/thermal/ti-soc-thermal/Makefile +++ b/drivers/thermal/ti-soc-thermal/Makefile @@ -2,5 +2,6 @@ obj-$(CONFIG_TI_SOC_THERMAL) += ti-soc-thermal.o ti-soc-thermal-y := ti-bandgap.o ti-soc-thermal-$(CONFIG_TI_THERMAL) += ti-thermal-common.o ti-soc-thermal-$(CONFIG_DRA752_THERMAL) += dra752-thermal-data.o +ti-soc-thermal-$(CONFIG_OMAP3_THERMAL) += omap3-thermal-data.o ti-soc-thermal-$(CONFIG_OMAP4_THERMAL) += omap4-thermal-data.o ti-soc-thermal-$(CONFIG_OMAP5_THERMAL) += omap5-thermal-data.o diff --git a/drivers/thermal/ti-soc-thermal/omap3-thermal-data.c b/drivers/thermal/ti-soc-thermal/omap3-thermal-data.c new file mode 100644 index 0000000..5cee2a35 --- /dev/null +++ b/drivers/thermal/ti-soc-thermal/omap3-thermal-data.c @@ -0,0 +1,103 @@ +/* + * OMAP3 thermal driver. + * + * Copyright (C) 2011-2012 Texas Instruments Inc. + * Copyright (C) 2014 Pavel Machek + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Note + * http://www.ti.com/lit/er/sprz278f/sprz278f.pdf "Advisory + * 3.1.1.186 MMC OCP Clock Not Gated When Thermal Sensor Is Used" + * + * Also TI says: + * Just be careful when you try to make thermal policy like decisions + * based on this sensor. Placement of the sensor w.r.t the actual logic + * generating heat has to be a factor as well. If you are just looking + * for an approximation temperature (thermometerish kind), you might be + * ok with this. I am not sure we'd find any TI data around this.. just a + * heads up. + */ + +#include "ti-thermal.h" +#include "ti-bandgap.h" + +/* + * OMAP34XX has one instance of thermal sensor for MPU + * need to describe the individual bit fields + */ +static struct temp_sensor_registers +omap34xx_mpu_temp_sensor_registers = { + .temp_sensor_ctrl = 0, + .bgap_soc_mask = BIT(8), + .bgap_eocz_mask = BIT(7), + .bgap_dtemp_mask = 0x7f, + + .bgap_mode_ctrl = 0, + .mode_ctrl_mask = BIT(9), +}; + +/* Thresholds and limits for OMAP34XX MPU temperature sensor */ +static struct temp_sensor_data omap34xx_mpu_temp_sensor_data = { + .min_freq = 32768, + .max_freq = 32768, + .max_temp = -99000, + .min_temp = 99000, + .hyst_val = 5000, +}; + +/* + * Temperature values in milli degree celsius + */ +static const int +omap34xx_adc_to_temp[128] = { + -40000, -40000, -40000, -40000, -40000, -39000, -38000, -36000, + -34000, -32000, -31000, -29000, -28000, -26000, -25000, -24000, + -22000, -21000, -19000, -18000, -17000, -15000, -14000, -12000, + -11000, -9000, -8000, -7000, -5000, -4000, -2000, -1000, 0000, + 1000, 3000, 4000, 5000, 7000, 8000, 10000, 11000, 13000, 14000, + 15000, 17000, 18000, 20000, 21000, 22000, 24000, 25000, 27000, + 28000, 30000, 31000, 32000, 34000, 35000, 37000, 38000, 39000, + 41000, 42000, 44000, 45000, 47000, 48000, 49000, 51000, 52000, + 53000, 55000, 56000, 58000, 59000, 60000, 62000, 63000, 65000, + 66000, 67000, 69000, 70000, 72000, 73000, 74000, 76000, 77000, + 79000, 80000, 81000, 83000, 84000, 85000, 87000, 88000, 89000, + 91000, 92000, 94000, 95000, 96000, 98000, 99000, 100000, + 102000, 103000, 105000, 106000, 107000, 109000, 110000, 111000, + 113000, 114000, 116000, 117000, 118000, 120000, 121000, 122000, + 124000, 124000, 125000, 125000, 125000, 125000, 125000 +}; + +/* OMAP34XX data */ +const struct ti_bandgap_data omap34xx_data = { + .features = TI_BANDGAP_FEATURE_CLK_CTRL /* | TI_BANDGAP_FEATURE_MODE_CONFIG */, + .fclock_name = "ts_fck", + .div_ck_name = "ts_fck", + .conv_table = omap34xx_adc_to_temp, + .adc_start_val = 0, + .adc_end_val = 127, + .expose_sensor = ti_thermal_expose_sensor, + .remove_sensor = ti_thermal_remove_sensor, + + .sensors = { + { + .registers = &omap34xx_mpu_temp_sensor_registers, + .ts_data = &omap34xx_mpu_temp_sensor_data, + .domain = "cpu", + .slope = 0, + .constant = 20000, + .slope_pcb = 0, + .constant_pcb = 20000, + .register_cooling = NULL, + .unregister_cooling = NULL, + }, + }, + .sensor_count = 1, +}; diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.c b/drivers/thermal/ti-soc-thermal/ti-bandgap.c index 634b6ce..2fde78c 100644 --- a/drivers/thermal/ti-soc-thermal/ti-bandgap.c +++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.c @@ -1509,6 +1510,12 @@ static SIMPLE_DEV_PM_OPS(ti_bandgap_dev_pm_ops, ti_bandgap_suspend, #endif static const struct of_device_id of_ti_bandgap_match[] = { +#ifdef CONFIG_OMAP3_THERMAL + { + .compatible = "ti,omap34xx-bandgap", + .data = (void *)&omap34xx_data, + }, +#endif #ifdef CONFIG_OMAP4_THERMAL { .compatible = "ti,omap4430-bandgap", diff --git a/drivers/thermal/ti-soc-thermal/ti-bandgap.h b/drivers/thermal/ti-soc-thermal/ti-bandgap.h index b3adf72..9ba9a6b 100644 --- a/drivers/thermal/ti-soc-thermal/ti-bandgap.h +++ b/drivers/thermal/ti-soc-thermal/ti-bandgap.h @@ -331,6 +331,7 @@ struct ti_temp_sensor { #define TI_BANDGAP_FEATURE_FREEZE_BIT BIT(7) #define TI_BANDGAP_FEATURE_COUNTER_DELAY BIT(8) #define TI_BANDGAP_FEATURE_HISTORY_BUFFER BIT(9) +#define TI_BANDGAP_FEATURE_UNRELIABLE BIT(10) #define TI_BANDGAP_HAS(b, f) \ ((b)->conf->features & TI_BANDGAP_FEATURE_ ## f) @@ -384,25 +385,10 @@ int ti_bandgap_set_sensor_data(struct ti_bandgap *bgp, int id, void *data); void *ti_bandgap_get_sensor_data(struct ti_bandgap *bgp, int id); int ti_bandgap_get_trend(struct ti_bandgap *bgp, int id, int *trend); -#ifdef CONFIG_OMAP4_THERMAL +extern const struct ti_bandgap_data omap34xx_data; extern const struct ti_bandgap_data omap4430_data; extern const struct ti_bandgap_data omap4460_data; extern const struct ti_bandgap_data omap4470_data; -#else -#define omap4430_data NULL -#define omap4460_data NULL -#define omap4470_data NULL -#endif - -#ifdef CONFIG_OMAP5_THERMAL extern const struct ti_bandgap_data omap5430_data; -#else -#define omap5430_data NULL -#endif - -#ifdef CONFIG_DRA752_THERMAL extern const struct ti_bandgap_data dra752_data; -#else -#define dra752_data NULL -#endif #endif