Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753660AbaBLSCb (ORCPT ); Wed, 12 Feb 2014 13:02:31 -0500 Received: from mail-pa0-f50.google.com ([209.85.220.50]:47993 "EHLO mail-pa0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753377AbaBLSBj (ORCPT ); Wed, 12 Feb 2014 13:01:39 -0500 From: dirk.brandewie@gmail.com To: linux-pm@vger.kernel.org, rjw@rjwysocki.net Cc: linux-kernel@vger.kernel.org, Dirk Brandewie Subject: [PATCH 5/5] intel_pstate: Add support for Baytrail turbo P states Date: Wed, 12 Feb 2014 10:01:07 -0800 Message-Id: <1392228067-14817-6-git-send-email-dirk.j.brandewie@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1392228067-14817-1-git-send-email-dirk.j.brandewie@intel.com> References: <1392228067-14817-1-git-send-email-dirk.j.brandewie@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dirk Brandewie A documentation update exposed the existance of the turbo ratio register. Update baytrail support to use the turbo range. Signed-off-by: Dirk Brandewie --- drivers/cpufreq/intel_pstate.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index ff45ce1..ea58eb6 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -34,8 +34,10 @@ #define SAMPLE_COUNT 3 -#define BYT_RATIOS 0x66a -#define BYT_VIDS 0x66b +#define BYT_RATIOS 0x66a +#define BYT_VIDS 0x66b +#define BYT_TURBO_RATIOS 0x66c + #define FRAC_BITS 8 #define int_tofp(X) ((int64_t)(X) << FRAC_BITS) @@ -366,6 +368,13 @@ static int byt_get_max_pstate(void) return (value >> 16) & 0xFF; } +static int byt_get_turbo_pstate(void) +{ + u64 value; + rdmsrl(BYT_TURBO_RATIOS, value); + return value & 0x3F; +} + static void byt_set_pstate(struct cpudata *cpudata, int pstate) { u64 val; @@ -468,7 +477,7 @@ static struct cpu_defaults byt_params = { .funcs = { .get_max = byt_get_max_pstate, .get_min = byt_get_min_pstate, - .get_turbo = byt_get_max_pstate, + .get_turbo = byt_get_turbo_pstate, .set = byt_set_pstate, .get_vid = byt_get_vid, }, -- 1.8.3.1 -- 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/