From patchwork Tue Jun 11 12:53:29 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amit Kachhap X-Patchwork-Id: 2703641 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 320203FD4E for ; Tue, 11 Jun 2013 12:59:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754645Ab3FKMz1 (ORCPT ); Tue, 11 Jun 2013 08:55:27 -0400 Received: from mail-pd0-f175.google.com ([209.85.192.175]:47524 "EHLO mail-pd0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751720Ab3FKMzY (ORCPT ); Tue, 11 Jun 2013 08:55:24 -0400 Received: by mail-pd0-f175.google.com with SMTP id 4so8609202pdd.20 for ; Tue, 11 Jun 2013 05:55:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:from:to:cc:subject:date:message-id:x-mailer:in-reply-to :references; bh=dSy0Wb7yCQ4WroTjhHb5voMKYxEhfi4fn86C7BmQk9Y=; b=HcXoj+quZAsge8wJg/yf3wv2tddrgaPdRDKvZjjaGrdLxh/kKmItgpznKLNIizXsAS orRuKfIJ07ptJxQuPMNiMMV+afmWP8hjo1Me0KEGar63r+GcHD2FoZ5rCJ0dlEkte9Xp FPAWLokfyPJ1NtF8cSDyjhA91gv/p6xzx4buzNJiotqggwBOjJjA88o7StaiSFR9J2AK 7pUOGr8y3ssnWi1h50bU+aGwP28x9ipureTv5qjsC2QCholdFub+NH/Gb074U9fo+jMC R9dmDOoUKHYlb6XjwelqiAViNsaLTzkDYzHaIlMMR/y2zwVHyLuV5XyM8vjosbZF3IrH 7HfA== X-Received: by 10.68.105.164 with SMTP id gn4mr14578417pbb.42.1370955323445; Tue, 11 Jun 2013 05:55:23 -0700 (PDT) Received: from localhost.localdomain ([115.113.119.130]) by mx.google.com with ESMTPSA id wi6sm14599807pbc.22.2013.06.11.05.55.19 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Tue, 11 Jun 2013 05:55:22 -0700 (PDT) From: Amit Daniel Kachhap To: linux-pm@vger.kernel.org, Zhang Rui , Eduardo Valentin Cc: linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, amit.kachhap@gmail.com, Kukjin Kim , jonghwa3.lee@samsung.com Subject: [PATCH V5 19/30] thermal: exynos: Add TMU features to check instead of using SOC type Date: Tue, 11 Jun 2013 18:23:29 +0530 Message-Id: <1370955220-2949-20-git-send-email-amit.daniel@samsung.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1370955220-2949-1-git-send-email-amit.daniel@samsung.com> References: <1370955220-2949-1-git-send-email-amit.daniel@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org This patch adds several features supported by TMU as bitfields. This features varies across different SOC type and comparing the features present in the TMU is more logical than comparing the soc itself. Acked-by: Kukjin Kim Signed-off-by: Amit Daniel Kachhap --- drivers/thermal/samsung/exynos_tmu.c | 26 +++++++++++++++--------- drivers/thermal/samsung/exynos_tmu.h | 31 +++++++++++++++++++++++++++++ drivers/thermal/samsung/exynos_tmu_data.c | 6 ++++- 3 files changed, 52 insertions(+), 11 deletions(-) diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c index 1880c4e..877dab8 100644 --- a/drivers/thermal/samsung/exynos_tmu.c +++ b/drivers/thermal/samsung/exynos_tmu.c @@ -142,13 +142,15 @@ static int exynos_tmu_initialize(struct platform_device *pdev) mutex_lock(&data->lock); clk_enable(data->clk); - status = readb(data->base + reg->tmu_status); - if (!status) { - ret = -EBUSY; - goto out; + if (TMU_SUPPORTS(pdata, READY_STATUS)) { + status = readb(data->base + reg->tmu_status); + if (!status) { + ret = -EBUSY; + goto out; + } } - if (data->soc == SOC_ARCH_EXYNOS) + if (TMU_SUPPORTS(pdata, TRIM_RELOAD)) __raw_writel(1, data->base + reg->triminfo_ctrl); /* Save trimming info in order to perform calibration */ @@ -287,7 +289,7 @@ static void exynos_tmu_control(struct platform_device *pdev, bool on) pdata->trigger_enable[2] << reg->inten_rise2_shift | pdata->trigger_enable[1] << reg->inten_rise1_shift | pdata->trigger_enable[0] << reg->inten_rise0_shift; - if (pdata->threshold_falling) + if (TMU_SUPPORTS(pdata, FALLING_TRIP)) interrupt_en |= interrupt_en << reg->inten_fall0_shift; } else { @@ -329,7 +331,7 @@ static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp) unsigned int val; int ret = -EINVAL; - if (data->soc == SOC_ARCH_EXYNOS4210) + if (!TMU_SUPPORTS(pdata, EMULATION)) goto out; if (temp && temp < MCELSIUS) @@ -343,9 +345,13 @@ static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp) if (temp) { temp /= MCELSIUS; - val = (EXYNOS_EMUL_TIME << reg->emul_time_shift) | - (temp_to_code(data, temp) - << reg->emul_temp_shift) | EXYNOS_EMUL_ENABLE; + if (TMU_SUPPORTS(pdata, EMUL_TIME)) { + val &= ~(EXYNOS_EMUL_TIME_MASK << reg->emul_time_shift); + val |= (EXYNOS_EMUL_TIME << reg->emul_time_shift); + } + val &= ~(EXYNOS_EMUL_DATA_MASK << reg->emul_temp_shift); + val |= (temp_to_code(data, temp) << reg->emul_temp_shift) | + EXYNOS_EMUL_ENABLE; } else { val &= ~EXYNOS_EMUL_ENABLE; } diff --git a/drivers/thermal/samsung/exynos_tmu.h b/drivers/thermal/samsung/exynos_tmu.h index b614407..6f55673 100644 --- a/drivers/thermal/samsung/exynos_tmu.h +++ b/drivers/thermal/samsung/exynos_tmu.h @@ -41,6 +41,34 @@ enum soc_type { }; /** + * EXYNOS TMU supported features. + * TMU_SUPPORT_EMULATION - This features is used to set user defined + * temperature to the TMU controller. + * TMU_SUPPORT_MULTI_INST - This features denotes that the soc + * has many instances of TMU. + * TMU_SUPPORT_TRIM_RELOAD - This features shows that trimming can + * be reloaded. + * TMU_SUPPORT_FALLING_TRIP - This features shows that interrupt can + * be registered for falling trips also. + * TMU_SUPPORT_READY_STATUS - This feature tells that the TMU current + * state(active/idle) can be checked. + * TMU_SUPPORT_EMUL_TIME - This features allows to set next temp emulation + * sample time. + * TMU_SUPPORT_SHARED_MEMORY - This feature tells that the different TMU + * sensors shares some common registers. + * TMU_SUPPORT - macro to compare the above features with the supplied. + */ +#define TMU_SUPPORT_EMULATION BIT(0) +#define TMU_SUPPORT_MULTI_INST BIT(1) +#define TMU_SUPPORT_TRIM_RELOAD BIT(2) +#define TMU_SUPPORT_FALLING_TRIP BIT(3) +#define TMU_SUPPORT_READY_STATUS BIT(4) +#define TMU_SUPPORT_EMUL_TIME BIT(5) +#define TMU_SUPPORT_SHARED_MEMORY BIT(6) + +#define TMU_SUPPORTS(a, b) (a->features & TMU_SUPPORT_ ## b) + +/** * struct exynos_tmu_register - register descriptors to access registers and * bitfields. The register validity, offsets and bitfield values may vary * slightly across different exynos SOC's. @@ -220,6 +248,8 @@ struct exynos_tmu_registers { * applicable to only some of the trigger levels. * @registers: Pointer to structure containing all the TMU controller registers * and bitfields shifts and masks. + * @features: a bitfield value indicating the features supported in SOC like + * emulation, multi instance etc * * This structure is required for configuration of exynos_tmu driver. */ @@ -247,6 +277,7 @@ struct exynos_tmu_platform_data { struct freq_clip_table freq_tab[4]; unsigned int freq_tab_count; const struct exynos_tmu_registers *registers; + unsigned int features; }; /** diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c index 06ecfb0..694557e 100644 --- a/drivers/thermal/samsung/exynos_tmu_data.c +++ b/drivers/thermal/samsung/exynos_tmu_data.c @@ -83,6 +83,7 @@ struct exynos_tmu_init_data const exynos4210_default_tmu_data = { .freq_tab_count = 2, .type = SOC_ARCH_EXYNOS4210, .registers = &exynos4210_tmu_registers, + .features = TMU_SUPPORT_READY_STATUS, }, }, .tmu_count = 1, @@ -162,7 +163,10 @@ static const struct exynos_tmu_registers exynos5250_tmu_registers = { }, \ .freq_tab_count = 2, \ .type = SOC_ARCH_EXYNOS, \ - .registers = &exynos5250_tmu_registers, + .registers = &exynos5250_tmu_registers, \ + .features = (TMU_SUPPORT_EMULATION | TMU_SUPPORT_TRIM_RELOAD | \ + TMU_SUPPORT_FALLING_TRIP | TMU_SUPPORT_READY_STATUS | \ + TMU_SUPPORT_EMUL_TIME) struct exynos_tmu_init_data const exynos5250_default_tmu_data = { .tmu_data = {