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soc/tegra: pmc: restrict compilation of suspend-related support to ARM 

Tegra SoCs with 64-bit ARM support don't currently support deep CPU
low-power states in mainline Linux.  When this support is added in the
future, it will probably look rather different from the existing
32-bit ARM support, since the ARM64 maintainers' strong preference is
to use PSCI to implement it.

So, for the time being, prevent the CPU suspend-related code and data
in the Tegra PMC driver from compiling on ARM64.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Paul Walmsley <pwalmsley@nvidia.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Allen Martin <amartin@nvidia.com>
Cc: Stephen Warren <swarren@nvidia.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Paul Walmsley 2014-12-09 22:36:50 +00:00 committed by Thierry Reding
parent 97bf6af1f9
commit 2b20b6164e
2 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/soc/tegra/pmc.c
View File

@ -739,7 +739,7 @@ static int tegra_pmc_probe(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
static int tegra_pmc_suspend(struct device *dev)
{
tegra_pmc_writel(virt_to_phys(tegra_resume), PMC_SCRATCH41);
@ -753,10 +753,11 @@ static int tegra_pmc_resume(struct device *dev)
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(tegra_pmc_pm_ops, tegra_pmc_suspend, tegra_pmc_resume);
#endif
static const char * const tegra20_powergates[] = {
[TEGRA_POWERGATE_CPU] = "cpu",
[TEGRA_POWERGATE_3D] = "3d",
@ -894,7 +895,9 @@ static struct platform_driver tegra_pmc_driver = {
.name = "tegra-pmc",
.suppress_bind_attrs = true,
.of_match_table = tegra_pmc_match,
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
.pm = &tegra_pmc_pm_ops,
#endif
},
.probe = tegra_pmc_probe,
};

2
include/soc/tegra/pm.h
View File

@ -17,7 +17,7 @@ enum tegra_suspend_mode {
TEGRA_MAX_SUSPEND_MODE,
};
#ifdef CONFIG_PM_SLEEP
#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_ARM)
enum tegra_suspend_mode
tegra_pm_validate_suspend_mode(enum tegra_suspend_mode mode);