From: Vishwanath BS <vishwanath.bs@ti.com>
To: linux-omap@vger.kernel.org
Cc: patches@linaro.org, Vishwanath BS <vishwanath.bs@ti.com>,
Santosh Shilimkar <santosh.shilimkar@ti.com>
Subject: [PATCH 08/13] OMAP3: cpufreq driver changes for DVFS support
Date: Fri, 21 Jan 2011 19:31:00 +0530 [thread overview]
Message-ID: <1295618465-15234-9-git-send-email-vishwanath.bs@ti.com> (raw)
In-Reply-To: <1295618465-15234-1-git-send-email-vishwanath.bs@ti.com>
Changes in the omap cpufreq driver for DVFS support.
Signed-off-by: Vishwanath BS <vishwanath.bs@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
---
arch/arm/plat-omap/cpu-omap.c | 35 ++++++++++++++++++++++++++++++++---
1 files changed, 32 insertions(+), 3 deletions(-)
diff --git a/arch/arm/plat-omap/cpu-omap.c b/arch/arm/plat-omap/cpu-omap.c
index 1c1b80b..d965220 100644
--- a/arch/arm/plat-omap/cpu-omap.c
+++ b/arch/arm/plat-omap/cpu-omap.c
@@ -30,10 +30,12 @@
#include <mach/hardware.h>
#include <plat/clock.h>
#include <asm/system.h>
+#include <asm/cpu.h>
#if defined(CONFIG_ARCH_OMAP3) && !defined(CONFIG_OMAP_PM_NONE)
#include <plat/omap-pm.h>
#include <plat/common.h>
+#include <plat/dvfs.h>
#endif
#define VERY_HI_RATE 900000000
@@ -85,11 +87,11 @@ static int omap_target(struct cpufreq_policy *policy,
unsigned int target_freq,
unsigned int relation)
{
-#ifdef CONFIG_ARCH_OMAP1
struct cpufreq_freqs freqs;
-#endif
#if defined(CONFIG_ARCH_OMAP3) && !defined(CONFIG_OMAP_PM_NONE)
unsigned long freq;
+ int i;
+ struct cpufreq_freqs freqs_notify;
struct device *mpu_dev = omap2_get_mpuss_device();
#endif
int ret = 0;
@@ -116,9 +118,36 @@ static int omap_target(struct cpufreq_policy *policy,
ret = clk_set_rate(mpu_clk, freqs.new * 1000);
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
#elif defined(CONFIG_ARCH_OMAP3) && !defined(CONFIG_OMAP_PM_NONE)
+ freqs.old = omap_getspeed(policy->cpu);;
+ freqs_notify.new = clk_round_rate(mpu_clk, target_freq * 1000) / 1000;
+ freqs.cpu = policy->cpu;
+
+ if (freqs.old == freqs.new)
+ return ret;
+
+ /* pre notifiers */
+ for_each_cpu(i, policy->cpus) {
+ freqs.cpu = i;
+ cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
+ }
+
+ /* scale the frequency */
freq = target_freq * 1000;
if (opp_find_freq_ceil(mpu_dev, &freq))
- omap_pm_cpu_set_freq(freq);
+ omap_device_scale(mpu_dev, mpu_dev, freq);
+
+ /* Update loops per jiffy */
+ freqs.new = omap_getspeed(policy->cpu);
+ for_each_cpu(i, policy->cpus)
+ per_cpu(cpu_data, i).loops_per_jiffy =
+ cpufreq_scale(per_cpu(cpu_data, i).loops_per_jiffy,
+ freqs.old, freqs.new);
+
+ /* post notifiers */
+ for_each_cpu(i, policy->cpus) {
+ freqs.cpu = i;
+ cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
+ }
#endif
return ret;
}
--
1.7.0.4
next prev parent reply other threads:[~2011-01-21 13:57 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-21 14:00 [PATCH 00/13] OMAP: Basic DVFS Framework Vishwanath BS
2011-01-21 14:00 ` [PATCH 01/13] OMAP: Introduce accessory APIs for DVFS Vishwanath BS
2011-02-03 1:07 ` Kevin Hilman
2011-02-08 11:22 ` Vishwanath Sripathy
2011-02-09 15:35 ` Kevin Hilman
2011-01-21 14:00 ` [PATCH 02/13] OMAP: Introduce device specific set rate and get rate in omap_device structure Vishwanath BS
2011-02-03 23:46 ` Kevin Hilman
2011-02-07 13:36 ` Vishwanath Sripathy
2011-01-21 14:00 ` [PATCH 03/13] OMAP: Implement Basic DVFS Vishwanath BS
2011-02-04 1:14 ` Kevin Hilman
2011-02-07 14:18 ` Vishwanath Sripathy
2011-02-09 15:59 ` Kevin Hilman
2011-02-09 16:24 ` Vishwanath Sripathy
2011-01-21 14:00 ` [PATCH 04/13] OMAP: Introduce dependent voltage domain support Vishwanath BS
2011-02-04 15:37 ` Kevin Hilman
2011-02-07 14:34 ` Vishwanath Sripathy
2011-02-10 16:36 ` Kevin Hilman
2011-02-11 4:41 ` Vishwanath Sripathy
2011-01-21 14:00 ` [PATCH 05/13] OMAP: Introduce device scale implementation Vishwanath BS
2011-02-04 16:04 ` Kevin Hilman
2011-02-07 14:56 ` Vishwanath Sripathy
2011-02-10 16:37 ` Kevin Hilman
2011-01-21 14:00 ` [PATCH 06/13] OMAP: Disable Smartreflex across DVFS Vishwanath BS
2011-02-04 16:06 ` Kevin Hilman
2011-02-07 14:58 ` Vishwanath Sripathy
2011-01-21 14:00 ` [PATCH 07/13] OMAP3: Introduce custom set rate and get rate APIs for scalable devices Vishwanath BS
2011-02-04 16:08 ` Kevin Hilman
2011-01-21 14:01 ` Vishwanath BS [this message]
2011-02-04 16:09 ` [PATCH 08/13] OMAP3: cpufreq driver changes for DVFS support Kevin Hilman
2011-02-14 9:34 ` Kahn, Gery
2011-02-14 12:49 ` Vishwanath Sripathy
2011-02-14 13:03 ` Menon, Nishanth
2011-02-14 13:42 ` Vishwanath Sripathy
2011-02-14 15:35 ` Kahn, Gery
2011-04-13 14:13 ` Jarkko Nikula
2011-04-13 17:57 ` Vishwanath Sripathy
2011-04-14 12:28 ` Jarkko Nikula
2011-01-21 14:01 ` [PATCH 09/13] OMAP3: Introduce voltage domain info in the hwmod structures Vishwanath BS
2011-02-04 16:10 ` Kevin Hilman
2011-01-21 14:01 ` [PATCH 10/13] OMAP3: Add voltage dependency table for VDD1 Vishwanath BS
2011-01-29 0:31 ` Kevin Hilman
2011-01-30 12:59 ` Vishwanath Sripathy
2011-01-31 15:38 ` Kevin Hilman
2011-02-28 11:48 ` Jarkko Nikula
2011-01-21 14:01 ` [PATCH 11/13] OMAP2PLUS: Replace voltage values with Macros Vishwanath BS
2011-02-04 16:44 ` Kevin Hilman
2011-01-21 14:01 ` [PATCH 12/13] OMAP2PLUS: Enable various options in defconfig Vishwanath BS
2011-01-21 14:01 ` [PATCH 13/13] OMAP: Add DVFS Documentation Vishwanath BS
2011-02-04 1:38 ` Kevin Hilman
2011-01-22 17:18 ` [PATCH 00/13] OMAP: Basic DVFS Framework Felipe Balbi
2011-01-24 6:01 ` Vishwanath Sripathy
2011-01-24 6:18 ` Felipe Balbi
2011-01-24 14:25 ` Vishwanath Sripathy
2011-01-24 15:25 ` Laurent Pinchart
2011-01-24 15:29 ` Felipe Balbi
2011-01-24 20:00 ` Kevin Hilman
2011-01-25 3:53 ` Felipe Balbi
2011-02-01 12:27 ` Vishwanath Sripathy
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