diff options
| author | Alex Frid <afrid@nvidia.com> | 2011-11-19 17:28:31 -0800 |
|---|---|---|
| committer | Varun Wadekar <vwadekar@nvidia.com> | 2011-12-15 12:06:15 +0530 |
| commit | 051a0b2e40779eee1125308bac32e1957570ccd6 (patch) | |
| tree | 543f5ff68118d020092e3b6c88d178810027a5b3 /arch/arm/mach-tegra/pm-t3.c | |
| parent | 7b6ad0c9924f567c8bd4dd7c2fbadf6ee8a960a8 (diff) | |
ARM: tegra: dvfs: Add DVFS rails statistic
On Tegra3: complete account of in- and out-of-bound rails control.
On Tegra2: out-of-bound vdd_cpu control in LP2 state is not accounted.
Change-Id: Ib68cbbfe3e4f965e758aca17a0ba30277d530347
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-on: http://git-master/r/67340
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/pm-t3.c')
| -rw-r--r-- | arch/arm/mach-tegra/pm-t3.c | 31 |
1 files changed, 19 insertions, 12 deletions
diff --git a/arch/arm/mach-tegra/pm-t3.c b/arch/arm/mach-tegra/pm-t3.c index df20340ed508..23ff0fe4c97c 100644 --- a/arch/arm/mach-tegra/pm-t3.c +++ b/arch/arm/mach-tegra/pm-t3.c @@ -38,6 +38,7 @@ #include "pm.h" #include "sleep.h" #include "tegra3_emc.h" +#include "dvfs.h" #ifdef CONFIG_TEGRA_CLUSTER_CONTROL #define CAR_CCLK_BURST_POLICY \ @@ -322,26 +323,32 @@ int tegra_cluster_control(unsigned int us, unsigned int flags) if (flags & TEGRA_POWER_CLUSTER_IMMEDIATE) us = 0; - if (current_cluster != target_cluster && !timekeeping_suspended) { - if (target_cluster == TEGRA_POWER_CLUSTER_G) { - s64 t = ktime_to_us(ktime_sub(ktime_get(), last_g2lp)); - s64 t_off = tegra_cpu_power_off_time(); - if (t_off > t) - udelay((unsigned int)(t_off - t)); - } - else - last_g2lp = ktime_get(); - } - DEBUG_CLUSTER(("%s(LP%d): %s->%s %s %s %d\r\n", __func__, (flags & TEGRA_POWER_SDRAM_SELFREFRESH) ? 1 : 2, is_lp_cluster() ? "LP" : "G", (target_cluster == TEGRA_POWER_CLUSTER_G) ? "G" : "LP", (flags & TEGRA_POWER_CLUSTER_IMMEDIATE) ? "immediate" : "", (flags & TEGRA_POWER_CLUSTER_FORCE) ? "force" : "", - us)); + us)); local_irq_save(irq_flags); + + if (current_cluster != target_cluster && !timekeeping_suspended) { + ktime_t now = ktime_get(); + if (target_cluster == TEGRA_POWER_CLUSTER_G) { + s64 t = ktime_to_us(ktime_sub(now, last_g2lp)); + s64 t_off = tegra_cpu_power_off_time(); + if (t_off > t) + udelay((unsigned int)(t_off - t)); + + tegra_dvfs_rail_on(tegra_cpu_rail, now); + + } else { + last_g2lp = now; + tegra_dvfs_rail_off(tegra_cpu_rail, now); + } + } + if (flags & TEGRA_POWER_SDRAM_SELFREFRESH) { if (us) tegra_lp2_set_trigger(us); |