diff options
| author | Jin Qian <jqian@nvidia.com> | 2011-03-16 12:30:41 -0700 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2011-04-26 15:55:22 -0700 |
| commit | c20390e18a5fc8edeee531c3f691c3e528d3569c (patch) | |
| tree | f6bcd37f5273309c0290e47d754031d5054cf405 /arch/arm/mach-tegra/suspend.c | |
| parent | d638dcd4c33b6abb86abd352d81673216eaddcc3 (diff) | |
ARM: tegra: power: add partition power check before suspend
Original-Change-Id: Ie4b29d1119bc2f640891525ab781c8de1bf64ddf
Reviewed-on: http://git-master/r/23215
Tested-by: Jin Qian <jqian@nvidia.com>
Reviewed-by: Scott Williams <scwilliams@nvidia.com>
Change-Id: Idc616485ecdb9e7c39728409d91a511e1de79e05
Diffstat (limited to 'arch/arm/mach-tegra/suspend.c')
| -rw-r--r-- | arch/arm/mach-tegra/suspend.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/suspend.c b/arch/arm/mach-tegra/suspend.c index 51cac1a49b7a..0839b861f9e6 100644 --- a/arch/arm/mach-tegra/suspend.c +++ b/arch/arm/mach-tegra/suspend.c @@ -53,6 +53,7 @@ #include <mach/iovmm.h> #include <mach/irqs.h> #include <mach/legacy_irq.h> +#include <mach/powergate.h> #include <mach/suspend.h> #include "board.h" @@ -551,12 +552,40 @@ static u8 *iram_save = NULL; static unsigned int iram_save_size = 0; static void __iomem *iram_code = IO_ADDRESS(TEGRA_IRAM_CODE_AREA); +static void tegra_suspend_check_pwr_stats(void) +{ + /* cpus and l2 are powered off later */ + unsigned long pwrgate_partid_mask = +#if !defined(CONFIG_ARCH_TEGRA_2x_SOC) + (1 << TEGRA_POWERGATE_HEG) | + (1 << TEGRA_POWERGATE_SATA) | + (1 << TEGRA_POWERGATE_3D1) | +#endif + (1 << TEGRA_POWERGATE_3D) | + (1 << TEGRA_POWERGATE_VENC) | + (1 << TEGRA_POWERGATE_PCIE) | + (1 << TEGRA_POWERGATE_VDEC) | + (1 << TEGRA_POWERGATE_MPE); + + int partid; + + for (partid = 0; partid < TEGRA_NUM_POWERGATE; partid++) + if ((1 << partid) & pwrgate_partid_mask) + if (tegra_powergate_is_powered(partid)) + pr_warning("partition %s is left on before suspend\n", + tegra_powergate_get_name(partid)); + + return; +} + void tegra_suspend_dram(bool do_lp0) { unsigned int mode = TEGRA_POWER_SDRAM_SELFREFRESH; unsigned long reg; unsigned int cpu; + tegra_suspend_check_pwr_stats(); + /* copy the reset vector and SDRAM shutdown code into IRAM */ memcpy(iram_save, iram_code, iram_save_size); memcpy(iram_code, (void *)__tegra_lp1_reset, iram_save_size); |