From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932777Ab3DZKiv (ORCPT ); Fri, 26 Apr 2013 06:38:51 -0400 Received: from mail-da0-f50.google.com ([209.85.210.50]:55311 "EHLO mail-da0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760034Ab3DZKio (ORCPT ); Fri, 26 Apr 2013 06:38:44 -0400 From: Amit Daniel Kachhap To: linux-pm@vger.kernel.org Cc: Zhang Rui , linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, amit.kachhap@gmail.com, Kukjin Kim , Eduardo Valentin Subject: [PATCH V2 08/20] thermal: exynos: Support thermal tripping Date: Fri, 26 Apr 2013 16:07:39 +0530 Message-Id: <1366972671-9227-9-git-send-email-amit.daniel@samsung.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1366972671-9227-1-git-send-email-amit.daniel@samsung.com> References: <1366972671-9227-1-git-send-email-amit.daniel@samsung.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org TMU urgently sends active-high signal (thermal trip) to PMU, and thermal tripping by hardware logic. Thermal tripping means that PMU cuts off the whole power of SoC by controlling external voltage regulator. Acked-by: Kukjin Kim Signed-off-by: Jonghwan Choi Signed-off-by: Amit Daniel Kachhap --- drivers/thermal/samsung/exynos_tmu.c | 8 +++++++- drivers/thermal/samsung/exynos_tmu_data.c | 2 ++ 2 files changed, 9 insertions(+), 1 deletions(-) diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c index 77b6a37..23baeeb 100644 --- a/drivers/thermal/samsung/exynos_tmu.c +++ b/drivers/thermal/samsung/exynos_tmu.c @@ -88,6 +88,7 @@ #define EXYNOS_TMU_CLEAR_FALL_INT (0x111 << 12) #define EXYNOS_TMU_TRIP_MODE_SHIFT 13 #define EXYNOS_TMU_TRIP_MODE_MASK 0x7 +#define EXYNOS_TMU_THERM_TRIP_EN_SHIFT 12 #define EXYNOS_TMU_INTEN_RISE0_SHIFT 0 #define EXYNOS_TMU_INTEN_RISE1_SHIFT 4 @@ -190,7 +191,7 @@ static int exynos_tmu_initialize(struct platform_device *pdev) { struct exynos_tmu_data *data = platform_get_drvdata(pdev); struct exynos_tmu_platform_data *pdata = data->pdata; - unsigned int status, trim_info; + unsigned int status, trim_info, con; unsigned int rising_threshold = 0, falling_threshold = 0; int ret = 0, threshold_code, i, trigger_levs = 0; @@ -255,6 +256,11 @@ static int exynos_tmu_initialize(struct platform_device *pdev) falling_threshold |= threshold_code << 8 * i; } + if (pdata->trigger_type[i] != HW_TRIP) + continue; + con = readl(data->base + EXYNOS_TMU_REG_CONTROL); + con |= (1 << EXYNOS_TMU_THERM_TRIP_EN_SHIFT); + writel(con, data->base + EXYNOS_TMU_REG_CONTROL); } writel(rising_threshold, diff --git a/drivers/thermal/samsung/exynos_tmu_data.c b/drivers/thermal/samsung/exynos_tmu_data.c index ee6a3c9..6b937f5 100644 --- a/drivers/thermal/samsung/exynos_tmu_data.c +++ b/drivers/thermal/samsung/exynos_tmu_data.c @@ -64,6 +64,7 @@ struct exynos_tmu_platform_data const exynos5250_default_tmu_data = { .trigger_levels[0] = 85, .trigger_levels[1] = 103, .trigger_levels[2] = 110, + .trigger_levels[3] = 120, .trigger_enable[0] = 1, .trigger_enable[1] = 1, .trigger_enable[2] = 1, @@ -71,6 +72,7 @@ struct exynos_tmu_platform_data const exynos5250_default_tmu_data = { .trigger_type[0] = 0, .trigger_type[1] = 0, .trigger_type[2] = 1, + .trigger_type[3] = 2, .gain = 8, .reference_voltage = 16, .noise_cancel_mode = 4, -- 1.7.1