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49ded525d4
linux-kernel-test/drivers/cpufreq
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Nishanth Menon 49ded525d4 cpufreq: OMAP: instantiate omap-cpufreq as a platform_driver 
As multi-platform build is being adopted by more and more ARM platforms,
initcall function should be used very carefully.  For example, when
CONFIG_ARM_OMAP2PLUS_CPUFREQ is built in the kernel, omap_cpufreq_init()
will be called on all the platforms to initialize omap-cpufreq driver.

Further, on OMAP, we now use Soc generic cpufreq-cpu0 driver using device
tree entries.  To allow cpufreq-cpu0 and omap-cpufreq drivers to co-exist
for OMAP in a single image, we need to ensure the following:
 1. With device tree boot, we use cpufreq-cpu0
 2. With non device tree boot, we use omap-cpufreq

In the case of (1), we will have cpu OPPs and regulator registered
as part of the device tree nodes, to ensure that omap-cpufreq
and cpufreq-cpu0 don't conflict in managing the frequency of the
same CPU, we should not permit omap-cpufreq to be probed.

In the case of (2), we will not have the cpufreq-cpu0 device, hence
only omap-cpufreq will be active.

To eliminate this undesired these effects, we change omap-cpufreq
driver to have it instantiated as a platform_driver and register
"omap-cpufreq" device only when booted without device tree nodes on
OMAP platforms.

This allows the following:
 a) Will only run on platforms that create the platform_device
    "omap-cpufreq".
 b) Since the platform_device is registered only when device tree nodes
    are *not* populated, omap-cpufreq driver does not conflict with
    the usage of cpufreq-cpu0 driver which is used on OMAP platforms when
    device tree nodes are present.

Inspired by commit 5553f9e26f
(cpufreq: instantiate cpufreq-cpu0 as a platform_driver)

[robherring2@gmail.com: reported conflict of omap-cpufreq vs other
driver in an non-device tree supported boot]
Reported-by: Rob Herring <robherring2@gmail.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-04-10 13:41:00 +02:00
..
acpi-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
amd_freq_sensitivity.c cpufreq: AMD "frequency sensitivity feedback" powersave bias for ondemand governor 2013-04-10 13:19:26 +02:00
arm_big_little_dt.c cpufreq: ARM big LITTLE: Add generic cpufreq driver and its DT glue 2013-04-02 15:26:32 +02:00
arm_big_little.c cpufreq: ARM big LITTLE: Add generic cpufreq driver and its DT glue 2013-04-02 15:26:32 +02:00
arm_big_little.h cpufreq: ARM big LITTLE: Add generic cpufreq driver and its DT glue 2013-04-02 15:26:32 +02:00
at32ap-cpufreq.c cpufreq: AVR32: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
blackfin-cpufreq.c cpufreq: blackfin: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
cpufreq_conservative.c cpufreq: conservative: Use an inline function to evaluate freq_target 2013-04-01 01:11:36 +02:00
cpufreq_governor.c cpufreq: governors: Calculate iowait time only when necessary 2013-04-01 01:11:35 +02:00
cpufreq_governor.h cpufreq: ondemand: allow custom powersave_bias_target handler to be registered 2013-04-10 13:19:26 +02:00
cpufreq_ondemand.c cpufreq: ondemand: allow custom powersave_bias_target handler to be registered 2013-04-10 13:19:26 +02:00
cpufreq_performance.c cpufreq: Improve debug prints 2012-11-15 00:33:06 +01:00
cpufreq_powersave.c cpufreq: Improve debug prints 2012-11-15 00:33:06 +01:00
cpufreq_stats.c cpufreq: stats: do cpufreq_cpu_put() corresponding to cpufreq_cpu_get() 2013-03-25 15:13:16 +01:00
cpufreq_userspace.c cpufreq: Don't check cpu_online(policy->cpu) 2013-02-09 01:18:34 +01:00
cpufreq-cpu0.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
cpufreq-nforce2.c cpufreq: drivers: Remove unnecessary assignments of policy-> members 2013-04-02 15:26:32 +02:00
cpufreq.c cpufreq: convert cpufreq_driver to using RCU 2013-04-10 13:19:26 +02:00
cris-artpec3-cpufreq.c cpufreq: cris: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
cris-etraxfs-cpufreq.c cpufreq: cris: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
davinci-cpufreq.c cpufreq: davinci: move cpufreq driver to drivers/cpufreq 2013-04-08 13:02:31 +02:00
dbx500-cpufreq.c cpufreq: drivers: don't check range of target freq in .target() 2013-04-02 15:26:32 +02:00
e_powersaver.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
elanfreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
exynos4x12-cpufreq.c arm-soc: cleanups 2013-02-21 14:58:40 -08:00
exynos4210-cpufreq.c arm-soc: cleanups 2013-02-21 14:58:40 -08:00
exynos5250-cpufreq.c arm-soc: cleanups 2013-02-21 14:58:40 -08:00
exynos5440-cpufreq.c cpufreq: exynos: Add cpufreq driver for exynos5440 2013-04-10 13:19:26 +02:00
exynos-cpufreq.c cpufreq: exynos: Remove error return even if no soc is found 2013-04-10 13:19:26 +02:00
exynos-cpufreq.h arm-soc: cleanups 2013-02-21 14:58:40 -08:00
freq_table.c cpufreq: Don't check cpu_online(policy->cpu) 2013-02-09 01:18:34 +01:00
gx-suspmod.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
highbank-cpufreq.c cpufreq: highbank: do not initialize array with a loop 2013-03-04 14:23:11 +01:00
ia64-acpi-cpufreq.c cpufreq: ia64: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
imx6q-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
integrator-cpufreq.c cpufreq: integrator: move cpufreq driver to drivers/cpufreq 2013-04-08 13:02:31 +02:00
intel_pstate.c intel-pstate: Use #defines instead of hard-coded values. 2013-03-25 15:13:07 +01:00
Kconfig cpufreq: sparc: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
Kconfig.arm cpufreq: exynos: Add cpufreq driver for exynos5440 2013-04-10 13:19:26 +02:00
Kconfig.powerpc cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
Kconfig.x86 cpufreq: AMD "frequency sensitivity feedback" powersave bias for ondemand governor 2013-04-10 13:19:26 +02:00
kirkwood-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
longhaul.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
longhaul.h sections: fix section conflicts in drivers/cpufreq 2012-09-14 21:10:46 +02:00
longrun.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
loongson2_cpufreq.c cpufreq: mips: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
Makefile cpufreq: exynos: Add cpufreq driver for exynos5440 2013-04-10 13:19:26 +02:00
maple-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
mperf.c [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
mperf.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
omap-cpufreq.c cpufreq: OMAP: instantiate omap-cpufreq as a platform_driver 2013-04-10 13:41:00 +02:00
p4-clockmod.c cpufreq: Don't check if cpu is online/offline for cpufreq callbacks 2013-04-02 15:26:32 +02:00
pcc-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
powernow-k6.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
powernow-k7.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
powernow-k7.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
powernow-k8.c cpufreq: Don't check if cpu is online/offline for cpufreq callbacks 2013-04-02 15:26:32 +02:00
powernow-k8.h cpufreq: Remove support for hardware P-state chips from powernow-k8 2012-09-09 22:05:30 +02:00
ppc_cbe_cpufreq_pervasive.c cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
ppc_cbe_cpufreq_pmi.c cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
ppc_cbe_cpufreq.c cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
ppc_cbe_cpufreq.h cpufreq: powerpc/platforms/cell: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
pxa2xx-cpufreq.c cpufreq: pxa2xx: move cpufreq driver to drivers/cpufreq 2013-04-08 13:02:31 +02:00
pxa3xx-cpufreq.c cpufreq: pxa3xx: move cpufreq driver to drivers/cpufreq 2013-04-08 13:02:31 +02:00
s3c64xx-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
s3c2416-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
s5pv210-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
sa1100-cpufreq.c cpufreq: sa11x0: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:24 +02:00
sa1110-cpufreq.c cpufreq: sa11x0: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:24 +02:00
sc520_freq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
sh-cpufreq.c cpufreq: sh: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:25 +02:00
sparc-us2e-cpufreq.c cpufreq: sparc: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
sparc-us3-cpufreq.c cpufreq: sparc: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00
spear-cpufreq.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
speedstep-centrino.c cpufreq: Don't check if cpu is online/offline for cpufreq callbacks 2013-04-02 15:26:32 +02:00
speedstep-ich.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
speedstep-lib.c cpufreq: Add support for x86 cpuinfo auto loading v4 2012-01-26 16:49:06 -08:00
speedstep-lib.h [CPUFREQ] Move x86 drivers to drivers/cpufreq/ 2011-05-19 18:51:07 -04:00
speedstep-smi.c cpufreq: Notify all policy->cpus in cpufreq_notify_transition() 2013-04-02 15:24:00 +02:00
tegra-cpufreq.c cpufreq: tegra: Move driver to drivers/cpufreq 2013-04-08 13:02:30 +02:00
unicore2-cpufreq.c cpufreq: unicore2: move cpufreq driver to drivers/cpufreq 2013-04-10 13:19:26 +02:00