diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-03 14:35:40 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-03 14:35:40 -0700 |
| commit | f991fae5c6d42dfc5029150b05a78cf3f6c18cc9 (patch) | |
| tree | d140deb437bde0631778b4984eeb72c1f4ee0c1d /arch | |
| parent | d4141531f63a29bb2a980092b6f2828c385e6edd (diff) | |
| parent | 2c843bd92ec276ecb68504b3b5ffa7066183f032 (diff) | |
Merge tag 'pm+acpi-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael Wysocki:
"This time the total number of ACPI commits is slightly greater than
the number of cpufreq commits, but Viresh Kumar (who works on cpufreq)
remains the most active patch submitter.
To me, the most significant change is the addition of offline/online
device operations to the driver core (with the Greg's blessing) and
the related modifications of the ACPI core hotplug code. Next are the
freezer updates from Colin Cross that should make the freezing of
tasks a bit less heavy weight.
We also have a couple of regression fixes, a number of fixes for
issues that have not been identified as regressions, two new drivers
and a bunch of cleanups all over.
Highlights:
- Hotplug changes to support graceful hot-removal failures.
It sometimes is necessary to fail device hot-removal operations
gracefully if they cannot be carried out completely. For example,
if memory from a memory module being hot-removed has been allocated
for the kernel's own use and cannot be moved elsewhere, it's
desirable to fail the hot-removal operation in a graceful way
rather than to crash the kernel, but currenty a success or a kernel
crash are the only possible outcomes of an attempted memory
hot-removal. Needless to say, that is not a very attractive
alternative and it had to be addressed.
However, in order to make it work for memory, I first had to make
it work for CPUs and for this purpose I needed to modify the ACPI
processor driver. It's been split into two parts, a resident one
handling the low-level initialization/cleanup and a modular one
playing the actual driver's role (but it binds to the CPU system
device objects rather than to the ACPI device objects representing
processors). That's been sort of like a live brain surgery on a
patient who's riding a bike.
So this is a little scary, but since we found and fixed a couple of
regressions it caused to happen during the early linux-next testing
(a month ago), nobody has complained.
As a bonus we remove some duplicated ACPI hotplug code, because the
ACPI-based CPU hotplug is now going to use the common ACPI hotplug
code.
- Lighter weight freezing of tasks.
These changes from Colin Cross and Mandeep Singh Baines are
targeted at making the freezing of tasks a bit less heavy weight
operation. They reduce the number of tasks woken up every time
during the freezing, by using the observation that the freezer
simply doesn't need to wake up some of them and wait for them all
to call refrigerator(). The time needed for the freezer to decide
to report a failure is reduced too.
Also reintroduced is the check causing a lockdep warining to
trigger when try_to_freeze() is called with locks held (which is
generally unsafe and shouldn't happen).
- cpufreq updates
First off, a commit from Srivatsa S Bhat fixes a resume regression
introduced during the 3.10 cycle causing some cpufreq sysfs
attributes to return wrong values to user space after resume. The
fix is kind of fresh, but also it's pretty obvious once Srivatsa
has identified the root cause.
Second, we have a new freqdomain_cpus sysfs attribute for the
acpi-cpufreq driver to provide information previously available via
related_cpus. From Lan Tianyu.
Finally, we fix a number of issues, mostly related to the
CPUFREQ_POSTCHANGE notifier and cpufreq Kconfig options and clean
up some code. The majority of changes from Viresh Kumar with bits
from Jacob Shin, Heiko Stübner, Xiaoguang Chen, Ezequiel Garcia,
Arnd Bergmann, and Tang Yuantian.
- ACPICA update
A usual bunch of updates from the ACPICA upstream.
During the 3.4 cycle we introduced support for ACPI 5 extended
sleep registers, but they are only supposed to be used if the
HW-reduced mode bit is set in the FADT flags and the code attempted
to use them without checking that bit. That caused suspend/resume
regressions to happen on some systems. Fix from Lv Zheng causes
those registers to be used only if the HW-reduced mode bit is set.
Apart from this some other ACPICA bugs are fixed and code cleanups
are made by Bob Moore, Tomasz Nowicki, Lv Zheng, Chao Guan, and
Zhang Rui.
- cpuidle updates
New driver for Xilinx Zynq processors is added by Michal Simek.
Multidriver support simplification, addition of some missing
kerneldoc comments and Kconfig-related fixes come from Daniel
Lezcano.
- ACPI power management updates
Changes to make suspend/resume work correctly in Xen guests from
Konrad Rzeszutek Wilk, sparse warning fix from Fengguang Wu and
cleanups and fixes of the ACPI device power state selection
routine.
- ACPI documentation updates
Some previously missing pieces of ACPI documentation are added by
Lv Zheng and Aaron Lu (hopefully, that will help people to
uderstand how the ACPI subsystem works) and one outdated doc is
updated by Hanjun Guo.
- Assorted ACPI updates
We finally nailed down the IA-64 issue that was the reason for
reverting commit 9f29ab11ddbf ("ACPI / scan: do not match drivers
against objects having scan handlers"), so we can fix it and move
the ACPI scan handler check added to the ACPI video driver back to
the core.
A mechanism for adding CMOS RTC address space handlers is
introduced by Lan Tianyu to allow some EC-related breakage to be
fixed on some systems.
A spec-compliant implementation of acpi_os_get_timer() is added by
Mika Westerberg.
The evaluation of _STA is added to do_acpi_find_child() to avoid
situations in which a pointer to a disabled device object is
returned instead of an enabled one with the same _ADR value. From
Jeff Wu.
Intel BayTrail PCH (Platform Controller Hub) support is added to
the ACPI driver for Intel Low-Power Subsystems (LPSS) and that
driver is modified to work around a couple of known BIOS issues.
Changes from Mika Westerberg and Heikki Krogerus.
The EC driver is fixed by Vasiliy Kulikov to use get_user() and
put_user() instead of dereferencing user space pointers blindly.
Code cleanups are made by Bjorn Helgaas, Nicholas Mazzuca and Toshi
Kani.
- Assorted power management updates
The "runtime idle" helper routine is changed to take the return
values of the callbacks executed by it into account and to call
rpm_suspend() if they return 0, which allows us to reduce the
overall code bloat a bit (by dropping some code that's not
necessary any more after that modification).
The runtime PM documentation is updated by Alan Stern (to reflect
the "runtime idle" behavior change).
New trace points for PM QoS are added by Sahara
(<keun-o.park@windriver.com>).
PM QoS documentation is updated by Lan Tianyu.
Code cleanups are made and minor issues are addressed by Bernie
Thompson, Bjorn Helgaas, Julius Werner, and Shuah Khan.
- devfreq updates
New driver for the Exynos5-bus device from Abhilash Kesavan.
Minor cleanups, fixes and MAINTAINERS update from MyungJoo Ham,
Abhilash Kesavan, Paul Bolle, Rajagopal Venkat, and Wei Yongjun.
- OMAP power management updates
Adaptive Voltage Scaling (AVS) SmartReflex voltage control driver
updates from Andrii Tseglytskyi and Nishanth Menon."
* tag 'pm+acpi-3.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (162 commits)
cpufreq: Fix cpufreq regression after suspend/resume
ACPI / PM: Fix possible NULL pointer deref in acpi_pm_device_sleep_state()
PM / Sleep: Warn about system time after resume with pm_trace
cpufreq: don't leave stale policy pointer in cdbs->cur_policy
acpi-cpufreq: Add new sysfs attribute freqdomain_cpus
cpufreq: make sure frequency transitions are serialized
ACPI: implement acpi_os_get_timer() according the spec
ACPI / EC: Add HP Folio 13 to ec_dmi_table in order to skip DSDT scan
ACPI: Add CMOS RTC Operation Region handler support
ACPI / processor: Drop unused variable from processor_perflib.c
cpufreq: tegra: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: s3c64xx: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: omap: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: imx6q: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: exynos: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: dbx500: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: davinci: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: arm-big-little: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: powernow-k8: call CPUFREQ_POSTCHANGE notfier in error cases
cpufreq: pcc: call CPUFREQ_POSTCHANGE notfier in error cases
...
Diffstat (limited to 'arch')
25 files changed, 159 insertions, 1974 deletions
diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig index a075b3e0c5c..e026b19b23e 100644 --- a/arch/arm/mach-davinci/Kconfig +++ b/arch/arm/mach-davinci/Kconfig @@ -40,6 +40,7 @@ config ARCH_DAVINCI_DA850 bool "DA850/OMAP-L138/AM18x based system" select ARCH_DAVINCI_DA8XX select ARCH_HAS_CPUFREQ + select CPU_FREQ_TABLE select CP_INTC config ARCH_DAVINCI_DA8XX diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c index 4d6933848ab..a0d4f6038b6 100644 --- a/arch/arm/mach-davinci/da850.c +++ b/arch/arm/mach-davinci/da850.c @@ -1004,7 +1004,7 @@ static const struct da850_opp da850_opp_96 = { #define OPP(freq) \ { \ - .index = (unsigned int) &da850_opp_##freq, \ + .driver_data = (unsigned int) &da850_opp_##freq, \ .frequency = freq * 1000, \ } @@ -1016,7 +1016,7 @@ static struct cpufreq_frequency_table da850_freq_table[] = { OPP(200), OPP(96), { - .index = 0, + .driver_data = 0, .frequency = CPUFREQ_TABLE_END, }, }; @@ -1044,7 +1044,7 @@ static int da850_set_voltage(unsigned int index) if (!cvdd) return -ENODEV; - opp = (struct da850_opp *) cpufreq_info.freq_table[index].index; + opp = (struct da850_opp *) cpufreq_info.freq_table[index].driver_data; return regulator_set_voltage(cvdd, opp->cvdd_min, opp->cvdd_max); } @@ -1125,7 +1125,7 @@ static int da850_set_pll0rate(struct clk *clk, unsigned long index) struct pll_data *pll = clk->pll_data; int ret; - opp = (struct da850_opp *) cpufreq_info.freq_table[index].index; + opp = (struct da850_opp *) cpufreq_info.freq_table[index].driver_data; prediv = opp->prediv; mult = opp->mult; postdiv = opp->postdiv; diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c index 68be532f868..5cc92874be7 100644 --- a/arch/arm/mach-omap2/omap_device.c +++ b/arch/arm/mach-omap2/omap_device.c @@ -588,11 +588,6 @@ static int _od_runtime_suspend(struct device *dev) return ret; } -static int _od_runtime_idle(struct device *dev) -{ - return pm_generic_runtime_idle(dev); -} - static int _od_runtime_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); @@ -648,7 +643,7 @@ static int _od_resume_noirq(struct device *dev) struct dev_pm_domain omap_device_pm_domain = { .ops = { SET_RUNTIME_PM_OPS(_od_runtime_suspend, _od_runtime_resume, - _od_runtime_idle) + NULL) USE_PLATFORM_PM_SLEEP_OPS .suspend_noirq = _od_suspend_noirq, .resume_noirq = _od_resume_noirq, diff --git a/arch/arm/mach-omap2/smartreflex-class3.c b/arch/arm/mach-omap2/smartreflex-class3.c index aee3c8940a3..7a42e1960c3 100644 --- a/arch/arm/mach-omap2/smartreflex-class3.c +++ b/arch/arm/mach-omap2/smartreflex-class3.c @@ -26,14 +26,14 @@ static int sr_class3_enable(struct omap_sr *sr) } omap_vp_enable(sr->voltdm); - return sr_enable(sr->voltdm, volt); + return sr_enable(sr, volt); } static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset) { - sr_disable_errgen(sr->voltdm); + sr_disable_errgen(sr); omap_vp_disable(sr->voltdm); - sr_disable(sr->voltdm); + sr_disable(sr); if (is_volt_reset) voltdm_reset(sr->voltdm); @@ -42,7 +42,7 @@ static int sr_class3_disable(struct omap_sr *sr, int is_volt_reset) static int sr_class3_configure(struct omap_sr *sr) { - return sr_configure_errgen(sr->voltdm); + return sr_configure_errgen(sr); } /* SR class3 structure */ diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig index 96100dbf5a2..a8427115ee0 100644 --- a/arch/arm/mach-pxa/Kconfig +++ b/arch/arm/mach-pxa/Kconfig @@ -615,12 +615,14 @@ endmenu config PXA25x bool select CPU_XSCALE + select CPU_FREQ_TABLE if CPU_FREQ help Select code specific to PXA21x/25x/26x variants config PXA27x bool select CPU_XSCALE + select CPU_FREQ_TABLE if CPU_FREQ help Select code specific to PXA27x variants @@ -633,6 +635,7 @@ config CPU_PXA26x config PXA3xx bool select CPU_XSC3 + select CPU_FREQ_TABLE if CPU_FREQ help Select code specific to PXA3xx variants diff --git a/arch/arm/mach-s3c24xx/cpufreq-utils.c b/arch/arm/mach-s3c24xx/cpufreq-utils.c index ddd8280e387..2a0aa5684e7 100644 --- a/arch/arm/mach-s3c24xx/cpufreq-utils.c +++ b/arch/arm/mach-s3c24xx/cpufreq-utils.c @@ -60,5 +60,5 @@ void s3c2410_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg) */ void s3c2410_set_fvco(struct s3c_cpufreq_config *cfg) { - __raw_writel(cfg->pll.index, S3C2410_MPLLCON); + __raw_writel(cfg->pll.driver_data, S3C2410_MPLLCON); } diff --git a/arch/arm/mach-s3c24xx/pll-s3c2410.c b/arch/arm/mach-s3c24xx/pll-s3c2410.c index dcf3420a327..5e37d368594 100644 --- a/arch/arm/mach-s3c24xx/pll-s3c2410.c +++ b/arch/arm/mach-s3c24xx/pll-s3c2410.c @@ -33,36 +33,36 @@ #include <plat/cpu-freq-core.h> static struct cpufreq_frequency_table pll_vals_12MHz[] = { - { .frequency = 34000000, .index = PLLVAL(82, 2, 3), }, - { .frequency = 45000000, .index = PLLVAL(82, 1, 3), }, - { .frequency = 51000000, .index = PLLVAL(161, 3, 3), }, - { .frequency = 48000000, .index = PLLVAL(120, 2, 3), }, - { .frequency = 56000000, .index = PLLVAL(142, 2, 3), }, - { .frequency = 68000000, .index = PLLVAL(82, 2, 2), }, - { .frequency = 79000000, .index = PLLVAL(71, 1, 2), }, - { .frequency = 85000000, .index = PLLVAL(105, 2, 2), }, - { .frequency = 90000000, .index = PLLVAL(112, 2, 2), }, - { .frequency = 101000000, .index = PLLVAL(127, 2, 2), }, - { .frequency = 113000000, .index = PLLVAL(105, 1, 2), }, - { .frequency = 118000000, .index = PLLVAL(150, 2, 2), }, - { .frequency = 124000000, .index = PLLVAL(116, 1, 2), }, - { .frequency = 135000000, .index = PLLVAL(82, 2, 1), }, - { .frequency = 147000000, .index = PLLVAL(90, 2, 1), }, - { .frequency = 152000000, .index = PLLVAL(68, 1, 1), }, - { .frequency = 158000000, .index = PLLVAL(71, 1, 1), }, - { .frequency = 170000000, .index = PLLVAL(77, 1, 1), }, - { .frequency = 180000000, .index = PLLVAL(82, 1, 1), }, - { .frequency = 186000000, .index = PLLVAL(85, 1, 1), }, - { .frequency = 192000000, .index = PLLVAL(88, 1, 1), }, - { .frequency = 203000000, .index = PLLVAL(161, 3, 1), }, + { .frequency = 34000000, .driver_data = PLLVAL(82, 2, 3), }, + { .frequency = 45000000, .driver_data = PLLVAL(82, 1, 3), }, + { .frequency = 51000000, .driver_data = PLLVAL(161, 3, 3), }, + { .frequency = 48000000, .driver_data = PLLVAL(120, 2, 3), }, + { .frequency = 56000000, .driver_data = PLLVAL(142, 2, 3), }, + { .frequency = 68000000, .driver_data = PLLVAL(82, 2, 2), }, + { .frequency = 79000000, .driver_data = PLLVAL(71, 1, 2), }, + { .frequency = 85000000, .driver_data = PLLVAL(105, 2, 2), }, + { .frequency = 90000000, .driver_data = PLLVAL(112, 2, 2), }, + { .frequency = 101000000, .driver_data = PLLVAL(127, 2, 2), }, + { .frequency = 113000000, .driver_data = PLLVAL(105, 1, 2), }, + { .frequency = 118000000, .driver_data = PLLVAL(150, 2, 2), }, + { .frequency = 124000000, .driver_data = PLLVAL(116, 1, 2), }, + { .frequency = 135000000, .driver_data = PLLVAL(82, 2, 1), }, + { .frequency = 147000000, .driver_data = PLLVAL(90, 2, 1), }, + { .frequency = 152000000, .driver_data = PLLVAL(68, 1, 1), }, + { .frequency = 158000000, .driver_data = PLLVAL(71, 1, 1), }, + { .frequency = 170000000, .driver_data = PLLVAL(77, 1, 1), }, + { .frequency = 180000000, .driver_data = PLLVAL(82, 1, 1), }, + { .frequency = 186000000, .driver_data = PLLVAL(85, 1, 1), }, + { .frequency = 192000000, .driver_data = PLLVAL(88, 1, 1), }, + { .frequency = 203000000, .driver_data = PLLVAL(161, 3, 1), }, /* 2410A extras */ - { .frequency = 210000000, .index = PLLVAL(132, 2, 1), }, - { .frequency = 226000000, .index = PLLVAL(105, 1, 1), }, - { .frequency = 266000000, .index = PLLVAL(125, 1, 1), }, - { .frequency = 268000000, .index = PLLVAL(126, 1, 1), }, - { .frequency = 270000000, .index = PLLVAL(127, 1, 1), }, + { .frequency = 210000000, .driver_data = PLLVAL(132, 2, 1), }, + { .frequency = 226000000, .driver_data = PLLVAL(105, 1, 1), }, + { .frequency = 266000000, .driver_data = PLLVAL(125, 1, 1), }, + { .frequency = 268000000, .driver_data = PLLVAL(126, 1, 1), }, + { .frequency = 270000000, .driver_data = PLLVAL(127, 1, 1), }, }; static int s3c2410_plls_add(struct device *dev, struct subsys_interface *sif) diff --git a/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c b/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c index 67378175831..a19460e6e7b 100644 --- a/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c +++ b/arch/arm/mach-s3c24xx/pll-s3c2440-12000000.c @@ -21,33 +21,33 @@ #include <plat/cpu-freq-core.h> static struct cpufreq_frequency_table s3c2440_plls_12[] __initdata = { - { .frequency = 75000000, .index = PLLVAL(0x75, 3, 3), }, /* FVco 600.000000 */ - { .frequency = 80000000, .index = PLLVAL(0x98, 4, 3), }, /* FVco 640.000000 */ - { .frequency = 90000000, .index = PLLVAL(0x70, 2, 3), }, /* FVco 720.000000 */ - { .frequency = 100000000, .index = PLLVAL(0x5c, 1, 3), }, /* FVco 800.000000 */ - { .frequency = 110000000, .index = PLLVAL(0x66, 1, 3), }, /* FVco 880.000000 */ - { .frequency = 120000000, .index = PLLVAL(0x70, 1, 3), }, /* FVco 960.000000 */ - { .frequency = 150000000, .index = PLLVAL(0x75, 3, 2), }, /* FVco 600.000000 */ - { .frequency = 160000000, .index = PLLVAL(0x98, 4, 2), }, /* FVco 640.000000 */ - { .frequency = 170000000, .index = PLLVAL(0x4d, 1, 2), }, /* FVco 680.000000 */ - { .frequency = 180000000, .index = PLLVAL(0x70, 2, 2), }, /* FVco 720.000000 */ - { .frequency = 190000000, .index = PLLVAL(0x57, 1, 2), }, /* FVco 760.000000 */ - { .frequency = 200000000, .index = PLLVAL(0x5c, 1, 2), }, /* FVco 800.000000 */ - { .frequency = 210000000, .index = PLLVAL(0x84, 2, 2), }, /* FVco 840.000000 */ - { .frequency = 220000000, .index = PLLVAL(0x66, 1, 2), }, /* FVco 880.000000 */ - { .frequency = 230000000, .index = PLLVAL(0x6b, 1, 2), }, /* FVco 920.000000 */ - { .frequency = 240000000, .index = PLLVAL(0x70, 1, 2), }, /* FVco 960.000000 */ - { .frequency = 300000000, .index = PLLVAL(0x75, 3, 1), }, /* FVco 600.000000 */ - { .frequency = 310000000, .index = PLLVAL(0x93, 4, 1), }, /* FVco 620.000000 */ - { .frequency = 320000000, .index = PLLVAL(0x98, 4, 1), }, /* FVco 640.000000 */ - { .frequency = 330000000, .index = PLLVAL(0x66, 2, 1), }, /* FVco 660.000000 */ - { .frequency = 340000000, .index = PLLVAL(0x4d, 1, 1), }, /* FVco 680.000000 */ - { .frequency = 350000000, .index = PLLVAL(0xa7, 4, 1), }, /* FVco 700.000000 */ - { .frequency = 360000000, .index = PLLVAL(0x70, 2, 1), }, /* FVco 720.000000 */ - { .frequency = 370000000, .index = PLLVAL(0xb1, 4, 1), }, /* FVco 740.000000 */ - { .frequency = 380000000, .index = PLLVAL(0x57, 1, 1), }, /* FVco 760.000000 */ - { .frequency = 390000000, .index = PLLVAL(0x7a, 2, 1), }, /* FVco 780.000000 */ - { .frequency = 400000000, .index = PLLVAL(0x5c, 1, 1), }, /* FVco 800.000000 */ + { .frequency = 75000000, .driver_data = PLLVAL(0x75, 3, 3), }, /* FVco 600.000000 */ + { .frequency = 80000000, .driver_data = PLLVAL(0x98, 4, 3), }, /* FVco 640.000000 */ + { .frequency = 90000000, .driver_data = PLLVAL(0x70, 2, 3), }, /* FVco 720.000000 */ + { .frequency = 100000000, .driver_data = PLLVAL(0x5c, 1, 3), }, /* FVco 800.000000 */ + { .frequency = 110000000, .driver_data = PLLVAL(0x66, 1, 3), }, /* FVco 880.000000 */ + { .frequency = 120000000, .driver_data = PLLVAL(0x70, 1, 3), }, /* FVco 960.000000 */ + { .frequency = 150000000, .driver_data = PLLVAL(0x75, 3, 2), }, /* FVco 600.000000 */ + { .frequency = 160000000, .driver_data = PLLVAL(0x98, 4, 2), }, /* FVco 640.000000 */ + { .frequency = 170000000, .driver_data = PLLVAL(0x4d, 1, 2), }, /* FVco 680.000000 */ + { .frequency = 180000000, .driver_data = PLLVAL(0x70, 2, 2), }, /* FVco 720.000000 */ + { .frequency = 190000000, .driver_data = PLLVAL(0x57, 1, 2), }, /* FVco 760.000000 */ + { .frequency = 200000000, .driver_data = PLLVAL(0x5c, 1, 2), }, /* FVco 800.000000 */ + { .frequency = 210000000, .driver_data = PLLVAL(0x84, 2, 2), }, /* FVco 840.000000 */ + { .frequency = 220000000, .driver_data = PLLVAL(0x66, 1, 2), }, /* FVco 880.000000 */ + { .frequency = 230000000, .driver_data = PLLVAL(0x6b, 1, 2), }, /* FVco 920.000000 */ + { .frequency = 240000000, .driver_data = PLLVAL(0x70, 1, 2), }, /* FVco 960.000000 */ + { .frequency = 300000000, .driver_data = PLLVAL(0x75, 3, 1), }, /* FVco 600.000000 */ + { .frequency = 310000000, .driver_data = PLLVAL(0x93, 4, 1), }, /* FVco 620.000000 */ + { .frequency = 320000000, .driver_data = PLLVAL(0x98, 4, 1), }, /* FVco 640.000000 */ + { .frequency = 330000000, .driver_data = PLLVAL(0x66, 2, 1), }, /* FVco 660.000000 */ + { .frequency = 340000000, .driver_data = PLLVAL(0x4d, 1, 1), }, /* FVco 680.000000 */ + { .frequency = 350000000, .driver_data = PLLVAL(0xa7, 4, 1), }, /* FVco 700.000000 */ + { .frequency = 360000000, .driver_data = PLLVAL(0x70, 2, 1), }, /* FVco 720.000000 */ + { .frequency = 370000000, .driver_data = PLLVAL(0xb1, 4, 1), }, /* FVco 740.000000 */ + { .frequency = 380000000, .driver_data = PLLVAL(0x57, 1, 1), }, /* FVco 760.000000 */ + { .frequency = 390000000, .driver_data = PLLVAL(0x7a, 2, 1), }, /* FVco 780.000000 */ + { .frequency = 400000000, .driver_data = PLLVAL(0x5c, 1, 1), }, /* FVco 800.000000 */ }; static int s3c2440_plls12_add(struct device *dev, struct subsys_interface *sif) diff --git a/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c b/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c index debfa106289..1191b290562 100644 --- a/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c +++ b/arch/arm/mach-s3c24xx/pll-s3c2440-16934400.c @@ -21,61 +21,61 @@ #include <plat/cpu-freq-core.h> static struct cpufreq_frequency_table s3c2440_plls_169344[] __initdata = { - { .frequency = 78019200, .index = PLLVAL(121, 5, 3), }, /* FVco 624.153600 */ - { .frequency = 84067200, .index = PLLVAL(131, 5, 3), }, /* FVco 672.537600 */ - { .frequency = 90115200, .index = PLLVAL(141, 5, 3), }, /* FVco 720.921600 */ - { .frequency = 96163200, .index = PLLVAL(151, 5, 3), }, /* FVco 769.305600 */ - { .frequency = 102135600, .index = PLLVAL(185, 6, 3), }, /* FVco 817.084800 */ - { .frequency = 108259200, .index = PLLVAL(171, 5, 3), }, /* FVco 866.073600 */ - { .frequency = 114307200, .index = PLLVAL(127, 3, 3), }, /* FVco 914.457600 */ - { .frequency = 120234240, .index = PLLVAL(134, 3, 3), }, /* FVco 961.873920 */ - { .frequency = 126161280, .index = PLLVAL(141, 3, 3), }, /* FVco 1009.290240 */ - { .frequency = 132088320, .index = PLLVAL(148, 3, 3), }, /* FVco 1056.706560 */ - { .frequency = 138015360, .index = PLLVAL(155, 3, 3), }, /* FVco 1104.122880 */ - { .frequency = 144789120, .index = PLLVAL(163, 3, 3), }, /* FVco 1158.312960 */ - { .frequency = 150100363, .index = PLLVAL(187, 9, 2), }, /* FVco 600.401454 */ - { .frequency = 156038400, .index = PLLVAL(121, 5, 2), }, /* FVco 624.153600 */ - { .frequency = 162086400, .index = PLLVAL(126, 5, 2), }, /* FVco 648.345600 */ - { .frequency = 168134400, .index = PLLVAL(131, 5, 2), }, /* FVco 672.537600 */ - { .frequency = 174048000, .index = PLLVAL(177, 7, 2), }, /* FVco 696.192000 */ - { .frequency = 180230400, .index = PLLVAL(141, 5, 2), }, /* FVco 720.921600 */ - { .frequency = 186278400, .index = PLLVAL(124, 4, 2), }, /* FVco 745.113600 */ - { .frequency = 192326400, .index = PLLVAL(151, 5, 2), }, /* FVco 769.305600 */ - { .frequency = 198132480, .index = PLLVAL(109, 3, 2), }, /* FVco 792.529920 */ - { .frequency = 204271200, .index = PLLVAL(185, 6, 2), }, /* FVco 817.084800 */ - { .frequency = 210268800, .index = PLLVAL(141, 4, 2), }, /* FVco 841.075200 */ - { .frequency = 216518400, .index = PLLVAL(171, 5, 2), }, /* FVco 866.073600 */ - { .frequency = 222264000, .index = PLLVAL(97, 2, 2), }, /* FVco 889.056000 */ - { .frequency = 228614400, .index = PLLVAL(127, 3, 2), }, /* FVco 914.457600 */ - { .frequency = 234259200, .index = PLLVAL(158, 4, 2), }, /* FVco 937.036800 */ - { .frequency = 240468480, .index = PLLVAL(134, 3, 2), }, /* FVco 961.873920 */ - { .frequency = 246960000, .index = PLLVAL(167, 4, 2), }, /* FVco 987.840000 */ - { .frequency = 252322560, .index = PLLVAL(141, 3, 2), }, /* FVco 1009.290240 */ - { .frequency = 258249600, .index = PLLVAL(114, 2, 2), }, /* FVco 1032.998400 */ - { .frequency = 264176640, .index = PLLVAL(148, 3, 2), }, /* FVco 1056.706560 */ - { .frequency = 270950400, .index = PLLVAL(120, 2, 2), }, /* FVco 1083.801600 */ - { .frequency = 276030720, .index = PLLVAL(155, 3, 2), }, /* FVco 1104.122880 */ - { .frequency = 282240000, .index = PLLVAL(92, 1, 2), }, /* FVco 1128.960000 */ - { .frequency = 289578240, .index = PLLVAL(163, 3, 2), }, /* FVco 1158.312960 */ - { .frequency = 294235200, .index = PLLVAL(131, 2, 2), }, /* FVco 1176.940800 */ - { .frequency = 300200727, .index = PLLVAL(187, 9, 1), }, /* FVco 600.401454 */ - { .frequency = 306358690, .index = PLLVAL(191, 9, 1), }, /* FVco 612.717380 */ - { .frequency = 312076800, .index = PLLVAL(121, 5, 1), }, /* FVco 624.153600 */ - { .frequency = 318366720, .index = PLLVAL(86, 3, 1), }, /* FVco 636.733440 */ - { .frequency = 324172800, .index = PLLVAL(126, 5, 1), }, /* FVco 648.345600 */ - { .frequency = 330220800, .index = PLLVAL(109, 4, 1), }, /* FVco 660.441600 */ - { .frequency = 336268800, .index = PLLVAL(131, 5, 1), }, /* FVco 672.537600 */ - { .frequency = 342074880, .index = PLLVAL(93, 3, 1), }, /* FVco 684.149760 */ - { .frequency = 348096000, .index = PLLVAL(177, 7, 1), }, /* FVco 696.192000 */ - { .frequency = 355622400, .index = PLLVAL(118, 4, 1), }, /* FVco 711.244800 */ - { .frequency = 360460800, .index = PLLVAL(141, 5, 1), }, /* FVco 720.921600 */ - { .frequency = 366206400, .index = PLLVAL(165, 6, 1), }, /* FVco 732.412800 */ - { .frequency = 372556800, .index = PLLVAL(124, 4, 1), }, /* FVco 745.113600 */ - { .frequency = 378201600, .index = PLLVAL(126, 4, 1), }, /* FVco 756.403200 */ - { .frequency = 384652800, .index = PLLVAL(151, 5, 1), }, /* FVco 769.305600 */ - { .frequency = 391608000, .index = PLLVAL(177, 6, 1), }, /* FVco 783.216000 */ - { .frequency = 396264960, .index = PLLVAL(109, 3, 1), }, /* FVco 792.529920 */ - { .frequency = 402192000, .index = PLLVAL(87, 2, 1), }, /* FVco 804.384000 */ + { .frequency = 78019200, .driver_data = PLLVAL(121, 5, 3), }, /* FVco 624.153600 */ + { .frequency = 84067200, .driver_data = PLLVAL(131, 5, 3), }, /* FVco 672.537600 */ + { .frequency = 90115200, .driver_data = PLLVAL(141, 5, 3), }, /* FVco 720.921600 */ + { .frequency = 96163200, .driver_data = PLLVAL(151, 5, 3), }, /* FVco 769.305600 */ + { .frequency = 102135600, .driver_data = PLLVAL(185, 6, 3), }, /* FVco 817.084800 */ + { .frequency = 108259200, .driver_data = PLLVAL(171, 5, 3), }, /* FVco 866.073600 */ + { .frequency = 114307200, .driver_data = PLLVAL(127, 3, 3), }, /* FVco 914.457600 */ + { .frequency = 120234240, .driver_data = PLLVAL(134, 3, 3), }, /* FVco 961.873920 */ + { .frequency = 126161280, .driver_data = PLLVAL(141, 3, 3), }, /* FVco 1009.290240 */ + { .frequency = 132088320, .driver_data = PLLVAL(148, 3, 3), }, /* FVco 1056.706560 */ + { .frequency = 138015360, .driver_data = PLLVAL(155, 3, 3), }, /* FVco 1104.122880 */ + { .frequency = 144789120, .driver_data = PLLVAL(163, 3, 3), }, /* FVco 1158.312960 */ + { .frequency = 150100363, .driver_data = PLLVAL(187, 9, 2), }, /* FVco 600.401454 */ + { .frequency = 156038400, .driver_data = PLLVAL(121, 5, 2), }, /* FVco 624.153600 */ + { .frequency = 162086400, .driver_data = PLLVAL(126, 5, 2), }, /* FVco 648.345600 */ + { .frequency = 168134400, .driver_data = PLLVAL(131, 5, 2), }, /* FVco 672.537600 */ + { .frequency = 174048000, .driver_data = PLLVAL(177, 7, 2), }, /* FVco 696.192000 */ + { .frequency = 180230400, .driver_data = PLLVAL(141, 5, 2), }, /* FVco 720.921600 */ + { .frequency = 186278400, .driver_data = PLLVAL(124, 4, 2), }, /* FVco 745.113600 */ + { .frequency = 192326400, .driver_data = PLLVAL(151, 5, 2), }, /* FVco 769.305600 */ + { .frequency = 198132480, .driver_data = PLLVAL(109, 3, 2), }, /* FVco 792.529920 */ + { .frequency = 204271200, .driver_data = PLLVAL(185, 6, 2), }, /* FVco 817.084800 */ + { .frequency = 210268800, .driver_data = PLLVAL(141, 4, 2), }, /* FVco 841.075200 */ + { .frequency = 216518400, .driver_data = PLLVAL(171, 5, 2), }, /* FVco 866.073600 */ + { .frequency = 222264000, .driver_data = PLLVAL(97, 2, 2), }, /* FVco 889.056000 */ + { .frequency = 228614400, .driver_data = PLLVAL(127, 3, 2), }, /* FVco 914.457600 */ + { .frequency = 234259200, .driver_data = PLLVAL(158, 4, 2), }, /* FVco 937.036800 */ + { .frequency = 240468480, .driver_data = PLLVAL(134, 3, 2), }, /* FVco 961.873920 */ + { .frequency = 246960000, .driver_data = PLLVAL(167, 4, 2), }, /* FVco 987.840000 */ + { .frequency = 252322560, .driver_data = PLLVAL(141, 3, 2), }, /* FVco 1009.290240 */ + { .frequency = 258249600, .driver_data = PLLVAL(114, 2, 2), }, /* FVco 1032.998400 */ + { .frequency = 264176640, .driver_data = PLLVAL(148, 3, 2), }, /* FVco 1056.706560 */ + { .frequency = 270950400, .driver_data = PLLVAL(120, 2, 2), }, /* FVco 1083.801600 */ + { .frequency = 276030720, .driver_data = PLLVAL(155, 3, 2), }, /* FVco 1104.122880 */ + { .frequency = 282240000, .driver_data = PLLVAL(92, 1, 2), }, /* FVco 1128.960000 */ + { .frequency = 289578240, .driver_data = PLLVAL(163, 3, 2), }, /* FVco 1158.312960 */ + { .frequency = 294235200, .driver_data = PLLVAL(131, 2, 2), }, /* FVco 1176.940800 */ + { .frequency = 300200727, .driver_data = PLLVAL(187, 9, 1), }, /* FVco 600.401454 */ + { .frequency = 306358690, .driver_data = PLLVAL(191, 9, 1), }, /* FVco 612.717380 */ + { .frequency = 312076800, .driver_data = PLLVAL(121, 5, 1), }, /* FVco 624.153600 */ + { .frequency = 318366720, .driver_data = PLLVAL(86, 3, 1), }, /* FVco 636.733440 */ + { .frequency = 324172800, .driver_data = PLLVAL(126, 5, 1), }, /* FVco 648.345600 */ + { .frequency = 330220800, .driver_data = PLLVAL(109, 4, 1), }, /* FVco 660.441600 */ + { .frequency = 336268800, .driver_data = PLLVAL(131, 5, 1), }, /* FVco 672.537600 */ + { .frequency = 342074880, .driver_data = PLLVAL(93, 3, 1), }, /* FVco 684.149760 */ + { .frequency = 348096000, .driver_data = PLLVAL(177, 7, 1), }, /* FVco 696.192000 */ + { .frequency = 355622400, .driver_data = PLLVAL(118, 4, 1), }, /* FVco 711.244800 */ + { .frequency = 360460800, .driver_data = PLLVAL(141, 5, 1), }, /* FVco 720.921600 */ + { .frequency = 366206400, .driver_data = PLLVAL(165, 6, 1), }, /* FVco 732.412800 */ + { .frequency = 372556800, .driver_data = PLLVAL(124, 4, 1), }, /* FVco 745.113600 */ + { .frequency = 378201600, .driver_data = PLLVAL(126, 4, 1), }, /* FVco 756.403200 */ + { .frequency = 384652800, .driver_data = PLLVAL(151, 5, 1), }, /* FVco 769.305600 */ + { .frequency = 391608000, .driver_data = PLLVAL(177, 6, 1), }, /* FVco 783.216000 */ + { .frequency = 396264960, .driver_data = PLLVAL(109, 3, 1), }, /* FVco 792.529920 */ + { .frequency = 402192000, .driver_data = PLLVAL(87, 2, 1), }, /* FVco 804.384000 */ }; static int s3c2440_plls169344_add(struct device *dev, diff --git a/arch/arm/mach-shmobile/clock-sh7372.c b/arch/arm/mach-shmobile/clock-sh7372.c index 7e105932c09..5390c6bbbc0 100644 --- a/arch/arm/mach-shmobile/clock-sh7372.c +++ b/arch/arm/mach-shmobile/clock-sh7372.c @@ -142,15 +142,15 @@ static void pllc2_table_rebuild(struct clk *clk) /* Initialise PLLC2 frequency table */ for (i = 0; i < ARRAY_SIZE(pllc2_freq_table) - 2; i++) { pllc2_freq_table[i].frequency = clk->parent->rate * (i + 20) * 2; - pllc2_freq_table[i].index = i; + pllc2_freq_table[i].driver_data = i; } /* This is a special entry - switching PLL off makes it a repeater */ pllc2_freq_table[i].frequency = clk->parent->rate; - pllc2_freq_table[i].index = i; + pllc2_freq_table[i].driver_data = i; pllc2_freq_table[++i].frequency = CPUFREQ_TABLE_END; - pllc2_freq_table[i].index = i; + pllc2_freq_table[i].driver_data = i; } static unsigned long pllc2_recalc(struct clk *clk) diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig index 65c5ae6fa38..ef3a8da49b2 100644 --- a/arch/arm/mach-tegra/Kconfig +++ b/arch/arm/mach-tegra/Kconfig @@ -28,7 +28,6 @@ config ARCH_TEGRA_2x_SOC select ARM_ERRATA_754327 if SMP select ARM_ERRATA_764369 if SMP select ARM_GIC - select CPU_FREQ_TABLE if CPU_FREQ select CPU_V7 select PINCTRL select PINCTRL_TEGRA20 @@ -46,7 +45,6 @@ config ARCH_TEGRA_3x_SOC select ARM_ERRATA_754322 select ARM_ERRATA_764369 if SMP select ARM_GIC - select CPU_FREQ_TABLE if CPU_FREQ select CPU_V7 select PINCTRL select PINCTRL_TEGRA30 @@ -63,7 +61,6 @@ config ARCH_TEGRA_114_SOC select HAVE_ARM_ARCH_TIMER select ARM_GIC select ARM_L1_CACHE_SHIFT_6 - select CPU_FREQ_TABLE if CPU_FREQ select CPU_V7 select PINCTRL select PINCTRL_TEGRA114 diff --git a/arch/arm/plat-samsung/include/plat/cpu-freq-core.h b/arch/arm/plat-samsung/include/plat/cpu-freq-core.h index d7e17150028..7231c8e4975 100644 --- a/arch/arm/plat-samsung/include/plat/cpu-freq-core.h +++ b/arch/arm/plat-samsung/include/plat/cpu-freq-core.h @@ -285,7 +285,7 @@ static inline int s3c_cpufreq_addfreq(struct cpufreq_frequency_table *table, s3c_freq_dbg("%s: { %d = %u kHz }\n", __func__, index, freq); - table[index].index = index; + table[index].driver_data = index; table[index].frequency = freq; } diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig index 9f3c54360e7..3201ddb8da6 100644 --- a/arch/cris/Kconfig +++ b/arch/cris/Kconfig @@ -134,11 +134,13 @@ config SVINTO_SIM config ETRAXFS bool "ETRAX-FS-V32" + select CPU_FREQ_TABLE if CPU_FREQ help Support CRIS V32. config CRIS_MACH_ARTPEC3 bool "ARTPEC-3" + select CPU_FREQ_TABLE if CPU_FREQ help Support Axis ARTPEC-3. diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c index bcda5b2d121..d43daf192b2 100644 --- a/arch/ia64/hp/common/sba_iommu.c +++ b/arch/ia64/hp/common/sba_iommu.c @@ -2042,7 +2042,8 @@ sba_map_ioc_to_node(struct ioc *ioc, acpi_handle handle) #endif static int __init -acpi_sba_ioc_add(struct acpi_device *device) +acpi_sba_ioc_add(struct acpi_device *device, + const struct acpi_device_id *not_used) { struct ioc *ioc; acpi_status status; @@ -2090,14 +2091,18 @@ static const struct acpi_device_id hp_ioc_iommu_device_ids[] = { {"HWP0004", 0}, {"", 0}, }; -static struct acpi_driver acpi_sba_ioc_driver = { - .name = "IOC IOMMU Driver", - .ids = hp_ioc_iommu_device_ids, - .ops = { - .add = acpi_sba_ioc_add, - }, +static struct acpi_scan_handler acpi_sba_ioc_handler = { + .ids = hp_ioc_iommu_device_ids, + .attach = acpi_sba_ioc_add, }; +static int __init acpi_sba_ioc_init_acpi(void) +{ + return acpi_scan_add_handler(&acpi_sba_ioc_handler); +} +/* This has to run before acpi_scan_init(). */ +arch_initcall(acpi_sba_ioc_init_acpi); + extern struct dma_map_ops swiotlb_dma_ops; static int __init @@ -2122,7 +2127,10 @@ sba_init(void) } #endif - acpi_bus_register_driver(&acpi_sba_ioc_driver); + /* + * ioc_list should be populated by the acpi_sba_ioc_handler's .attach() + * routine, but that only happens if acpi_scan_init() has already run. + */ if (!ioc_list) { #ifdef CONFIG_IA64_GENERIC /* diff --git a/arch/mips/loongson/lemote-2f/clock.c b/arch/mips/loongson/lemote-2f/clock.c index bc739d4bab2..4dc2f5fa3f6 100644 --- a/arch/mips/loongson/lemote-2f/clock.c +++ b/arch/mips/loongson/lemote-2f/clock.c @@ -121,7 +121,8 @@ int clk_set_rate(struct clk *clk, unsigned long rate) clk->rate = rate; regval = LOONGSON_CHIPCFG0; - regval = (regval & ~0x7) | (loongson2_clockmod_table[i].index - 1); + regval = (regval & ~0x7) | + (loongson2_clockmod_table[i].driver_data - 1); LOONGSON_CHIPCFG0 = regval; return ret; diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig index b62aab3e22e..e17cdfc5ba4 100644 --- a/arch/powerpc/platforms/Kconfig +++ b/arch/powerpc/platforms/Kconfig @@ -193,37 +193,6 @@ config PPC_IO_WORKAROUNDS source "drivers/cpufreq/Kconfig" -menu "CPU Frequency drivers" - depends on CPU_FREQ - -config CPU_FREQ_PMAC - bool "Support for Apple PowerBooks" - depends on ADB_PMU && PPC32 - select CPU_FREQ_TABLE - help - This adds support for frequency switching on Apple PowerBooks, - this currently includes some models of iBook & Titanium - PowerBook. - -config CPU_FREQ_PMAC64 - bool "Support for some Apple G5s" - depends on PPC_PMAC && PPC64 - select CPU_FREQ_TABLE - help - This adds support for frequency switching on Apple iMac G5, - and some of the more recent desktop G5 machines as well. - -config PPC_PASEMI_CPUFREQ - bool "Support for PA Semi PWRficient" - depends on PPC_PASEMI - default y - select CPU_FREQ_TABLE - help - This adds the support for frequency switching on PA Semi - PWRficient processors. - -endmenu - menu "CPUIdle driver" source "drivers/cpuidle/Kconfig" diff --git a/arch/powerpc/platforms/pasemi/Makefile b/arch/powerpc/platforms/pasemi/Makefile index ce6d789e074..8e8d4cae5eb 100644 --- a/arch/powerpc/platforms/pasemi/Makefile +++ b/arch/powerpc/platforms/pasemi/Makefile @@ -1,3 +1,2 @@ obj-y += setup.o pci.o time.o idle.o powersave.o iommu.o dma_lib.o misc.o obj-$(CONFIG_PPC_PASEMI_MDIO) += gpio_mdio.o -obj-$(CONFIG_PPC_PASEMI_CPUFREQ) += cpufreq.o diff --git a/arch/powerpc/platforms/pasemi/cpufreq.c b/arch/powerpc/platforms/pasemi/cpufreq.c deleted file mode 100644 index be1e7958909..00000000000 --- a/arch/powerpc/platforms/pasemi/cpufreq.c +++ /dev/null @@ -1,330 +0,0 @@ -/* - * Copyright (C) 2007 PA Semi, Inc - * - * Authors: Egor Martovetsky <egor@pasemi.com> - * Olof Johansson <olof@lixom.net> - * - * Maintained by: Olof Johansson <olof@lixom.net> - * - * Based on arch/powerpc/platforms/cell/cbe_cpufreq.c: - * (C) Copyright IBM Deutschland Entwicklung GmbH 2005 - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -#include <linux/cpufreq.h> -#include <linux/timer.h> -#include <linux/module.h> - -#include <asm/hw_irq.h> -#include <asm/io.h> -#include <asm/prom.h> -#include <asm/time.h> -#include <asm/smp.h> - -#define SDCASR_REG 0x0100 -#define SDCASR_REG_STRIDE 0x1000 -#define SDCPWR_CFGA0_REG 0x0100 -#define SDCPWR_PWST0_REG 0x0000 -#define SDCPWR_GIZTIME_REG 0x0440 - -/* SDCPWR_GIZTIME_REG fields */ -#define SDCPWR_GIZTIME_GR 0x80000000 -#define SDCPWR_GIZTIME_LONGLOCK 0x000000ff - -/* Offset of ASR registers from SDC base */ -#define SDCASR_OFFSET 0x120000 - -static void __iomem *sdcpwr_mapbase; -static void __iomem *sdcasr_mapbase; - -static DEFINE_MUTEX(pas_switch_mutex); - -/* Current astate, is used when waking up from power savings on - * one core, in case the other core has switched states during - * the idle time. - */ -static int current_astate; - -/* We support 5(A0-A4) power states excluding turbo(A5-A6) modes */ -static struct cpufreq_frequency_table pas_freqs[] = { - {0, 0}, - {1, 0}, - {2, 0}, - {3, 0}, - {4, 0}, - {0, CPUFREQ_TABLE_END}, -}; - -static struct freq_attr *pas_cpu_freqs_attr[] = { - &cpufreq_freq_attr_scaling_available_freqs, - NULL, -}; - -/* - * hardware specific functions - */ - -static int get_astate_freq(int astate) -{ - u32 ret; - ret = in_le32(sdcpwr_mapbase + SDCPWR_CFGA0_REG + (astate * 0x10)); - - return ret & 0x3f; -} - -static int get_cur_astate(int cpu) -{ - u32 ret; - - ret = in_le32(sdcpwr_mapbase + SDCPWR_PWST0_REG); - ret = (ret >> (cpu * 4)) & 0x7; - - return ret; -} - -static int get_gizmo_latency(void) -{ - u32 giztime, ret; - - giztime = in_le32(sdcpwr_mapbase + SDCPWR_GIZTIME_REG); - - /* just provide the upper bound */ - if (giztime & SDCPWR_GIZTIME_GR) - ret = (giztime & SDCPWR_GIZTIME_LONGLOCK) * 128000; - else - ret = (giztime & SDCPWR_GIZTIME_LONGLOCK) * 1000; - - return ret; -} - -static void set_astate(int cpu, unsigned int astate) -{ - unsigned long flags; - - /* Return if called before init has run */ - if (unlikely(!sdcasr_mapbase)) - return; - - local_irq_save(flags); - - out_le32(sdcasr_mapbase + SDCASR_REG + SDCASR_REG_STRIDE*cpu, astate); - - local_irq_restore(flags); -} - -int check_astate(void) -{ - return get_cur_astate(hard_smp_processor_id()); -} - -void restore_astate(int cpu) -{ - set_astate(cpu, current_astate); -} - -/* - * cpufreq functions - */ - -static int pas_cpufreq_cpu_init(struct cpufreq_policy *policy) -{ - const u32 *max_freqp; - u32 max_freq; - int i, cur_astate; - struct resource res; - struct device_node *cpu, *dn; - int err = -ENODEV; - - cpu = of_get_cpu_node(policy->cpu, NULL); - - if (!cpu) - goto out; - - dn = of_find_compatible_node(NULL, NULL, "1682m-sdc"); - if (!dn) - dn = of_find_compatible_node(NULL, NULL, - "pasemi,pwrficient-sdc"); - if (!dn) - goto out; - err = of_address_to_resource(dn, 0, &res); - of_node_put(dn); - if (err) - goto out; - sdcasr_mapbase = ioremap(res.start + SDCASR_OFFSET, 0x2000); - if (!sdcasr_mapbase) { - err = -EINVAL; - goto out; - } - - dn = of_find_compatible_node(NULL, NULL, "1682m-gizmo"); - if (!dn) - dn = of_find_compatible_node(NULL, NULL, - "pasemi,pwrficient-gizmo"); - if (!dn) { - err = -ENODEV; - goto out_unmap_sdcasr; - } - err = of_address_to_resource(dn, 0, &res); - of_node_put(dn); - if (err) - goto out_unmap_sdcasr; - sdcpwr_mapbase = ioremap(res.start, 0x1000); - if (!sdcpwr_mapbase) { - err = -EINVAL; - goto out_unmap_sdcasr; - } - - pr_debug("init cpufreq on CPU %d\n", policy->cpu); - - max_freqp = of_get_property(cpu, "clock-frequency", NULL); - if (!max_freqp) { - err = -EINVAL; - goto out_unmap_sdcpwr; - } - - /* we need the freq in kHz */ - max_freq = *max_freqp / 1000; - - pr_debug("max clock-frequency is at %u kHz\n", max_freq); - pr_debug("initializing frequency table\n"); - - /* initialize frequency table */ - for (i=0; pas_freqs[i].frequency!=CPUFREQ_TABLE_END; i++) { - pas_freqs[i].frequency = get_astate_freq(pas_freqs[i].index) * 100000; - pr_debug("%d: %d\n", i, pas_freqs[i].frequency); - } - - policy->cpuinfo.transition_latency = get_gizmo_latency(); - - cur_astate = get_cur_astate(policy->cpu); - pr_debug("current astate is at %d\n",cur_astate); - - policy->cur = pas_freqs[cur_astate].frequency; - cpumask_copy(policy->cpus, cpu_online_mask); - - ppc_proc_freq = policy->cur * 1000ul; - - cpufreq_frequency_table_get_attr(pas_freqs, policy->cpu); - - /* this ensures that policy->cpuinfo_min and policy->cpuinfo_max - * are set correctly - */ - return cpufreq_frequency_table_cpuinfo(policy, pas_freqs); - -out_unmap_sdcpwr: - iounmap(sdcpwr_mapbase); - -out_unmap_sdcasr: - iounmap(sdcasr_mapbase); -out: - return err; -} - -static int pas_cpufreq_cpu_exit(struct cpufreq_policy *policy) -{ - /* - * We don't support CPU hotplug. Don't unmap after the system - * has already made it to a running state. - */ - if (system_state != SYSTEM_BOOTING) - return 0; - - if (sdcasr_mapbase) - iounmap(sdcasr_mapbase); - if (sdcpwr_mapbase) - iounmap(sdcpwr_mapbase); - - cpufreq_frequency_table_put_attr(policy->cpu); - return 0; -} - -static int pas_cpufreq_verify(struct cpufreq_policy *policy) -{ - return cpufreq_frequency_table_verify(policy, pas_freqs); -} - -static int pas_cpufreq_target(struct cpufreq_policy *policy, - unsigned int target_freq, - unsigned int relation) -{ - struct cpufreq_freqs freqs; - int pas_astate_new; - int i; - - cpufreq_frequency_table_target(policy, - pas_freqs, - target_freq, - relation, - &pas_astate_new); - - freqs.old = policy->cur; - freqs.new = pas_freqs[pas_astate_new].frequency; - - mutex_lock(&pas_switch_mutex); - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - - pr_debug("setting frequency for cpu %d to %d kHz, 1/%d of max frequency\n", - policy->cpu, - pas_freqs[pas_astate_new].frequency, - pas_freqs[pas_astate_new].index); - - current_astate = pas_astate_new; - - for_each_online_cpu(i) - set_astate(i, pas_astate_new); - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - mutex_unlock(&pas_switch_mutex); - - ppc_proc_freq = freqs.new * 1000ul; - return 0; -} - -static struct cpufreq_driver pas_cpufreq_driver = { - .name = "pas-cpufreq", - .owner = THIS_MODULE, - .flags = CPUFREQ_CONST_LOOPS, - .init = pas_cpufreq_cpu_init, - .exit = pas_cpufreq_cpu_exit, - .verify = pas_cpufreq_verify, - .target = pas_cpufreq_target, - .attr = pas_cpu_freqs_attr, -}; - -/* - * module init and destoy - */ - -static int __init pas_cpufreq_init(void) -{ - if (!of_machine_is_compatible("PA6T-1682M") && - !of_machine_is_compatible("pasemi,pwrficient")) - return -ENODEV; - - return cpufreq_register_driver(&pas_cpufreq_driver); -} - -static void __exit pas_cpufreq_exit(void) -{ - cpufreq_unregister_driver(&pas_cpufreq_driver); -} - -module_init(pas_cpufreq_init); -module_exit(pas_cpufreq_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Egor Martovetsky <egor@pasemi.com>, Olof Johansson <olof@lixom.net>"); diff --git a/arch/powerpc/platforms/powermac/Makefile b/arch/powerpc/platforms/powermac/Makefile index ea47df66fee..52c6ce1cc98 100644 --- a/arch/powerpc/platforms/powermac/Makefile +++ b/arch/powerpc/platforms/powermac/Makefile @@ -9,8 +9,6 @@ obj-y += pic.o setup.o time.o feature.o pci.o \ sleep.o low_i2c.o cache.o pfunc_core.o \ pfunc_base.o udbg_scc.o udbg_adb.o obj-$(CONFIG_PMAC_BACKLIGHT) += backlight.o -obj-$(CONFIG_CPU_FREQ_PMAC) += cpufreq_32.o -obj-$(CONFIG_CPU_FREQ_PMAC64) += cpufreq_64.o # CONFIG_NVRAM is an arch. independent tristate symbol, for pmac32 we really # need this to be a bool. Cheat here and pretend CONFIG_NVRAM=m is really # CONFIG_NVRAM=y diff --git a/arch/powerpc/platforms/powermac/cpufreq_32.c b/arch/powerpc/platforms/powermac/cpufreq_32.c deleted file mode 100644 index 3104fad8248..00000000000 --- a/arch/powerpc/platforms/powermac/cpufreq_32.c +++ /dev/null @@ -1,721 +0,0 @@ -/* - * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org> - * Copyright (C) 2004 John Steele Scott <toojays@toojays.net> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * TODO: Need a big cleanup here. Basically, we need to have different - * cpufreq_driver structures for the different type of HW instead of the - * current mess. We also need to better deal with the detection of the - * type of machine. - * - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/adb.h> -#include <linux/pmu.h> -#include <linux/cpufreq.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/hardirq.h> -#include <asm/prom.h> -#include <asm/machdep.h> -#include <asm/irq.h> -#include <asm/pmac_feature.h> -#include <asm/mmu_context.h> -#include <asm/sections.h> -#include <asm/cputable.h> -#include <asm/time.h> -#include <asm/mpic.h> -#include <asm/keylargo.h> -#include <asm/switch_to.h> - -/* WARNING !!! This will cause calibrate_delay() to be called, - * but this is an __init function ! So you MUST go edit - * init/main.c to make it non-init before enabling DEBUG_FREQ - */ -#undef DEBUG_FREQ - -extern void low_choose_7447a_dfs(int dfs); -extern void low_choose_750fx_pll(int pll); -extern void low_sleep_handler(void); - -/* - * Currently, PowerMac cpufreq supports only high & low frequencies - * that are set by the firmware - */ -static unsigned int low_freq; -static unsigned int hi_freq; -static unsigned int cur_freq; -static unsigned int sleep_freq; -static unsigned long transition_latency; - -/* - * Different models uses different mechanisms to switch the frequency - */ -static int (*set_speed_proc)(int low_speed); -static unsigned int (*get_speed_proc)(void); - -/* - * Some definitions used by the various speedprocs - */ -static u32 voltage_gpio; -static u32 frequency_gpio; -static u32 slew_done_gpio; -static int no_schedule; -static int has_cpu_l2lve; -static int is_pmu_based; - -/* There are only two frequency states for each processor. Values - * are in kHz for the time being. - */ -#define CPUFREQ_HIGH 0 -#define CPUFREQ_LOW 1 - -static struct cpufreq_frequency_table pmac_cpu_freqs[] = { - {CPUFREQ_HIGH, 0}, - {CPUFREQ_LOW, 0}, - {0, CPUFREQ_TABLE_END}, -}; - -static struct freq_attr* pmac_cpu_freqs_attr[] = { - &cpufreq_freq_attr_scaling_available_freqs, - NULL, -}; - -static inline void local_delay(unsigned long ms) -{ - if (no_schedule) - mdelay(ms); - else - msleep(ms); -} - -#ifdef DEBUG_FREQ -static inline void debug_calc_bogomips(void) -{ - /* This will cause a recalc of bogomips and display the - * result. We backup/restore the value to avoid affecting the - * core cpufreq framework's own calculation. - */ - unsigned long save_lpj = loops_per_jiffy; - calibrate_delay(); - loops_per_jiffy = save_lpj; -} -#endif /* DEBUG_FREQ */ - -/* Switch CPU speed under 750FX CPU control - */ -static int cpu_750fx_cpu_speed(int low_speed) -{ - u32 hid2; - - if (low_speed == 0) { - /* ramping up, set voltage first */ - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x05); - /* Make sure we sleep for at least 1ms */ - local_delay(10); - - /* tweak L2 for high voltage */ - if (has_cpu_l2lve) { - hid2 = mfspr(SPRN_HID2); - hid2 &= ~0x2000; - mtspr(SPRN_HID2, hid2); - } - } -#ifdef CONFIG_6xx - low_choose_750fx_pll(low_speed); -#endif - if (low_speed == 1) { - /* tweak L2 for low voltage */ - if (has_cpu_l2lve) { - hid2 = mfspr(SPRN_HID2); - hid2 |= 0x2000; - mtspr(SPRN_HID2, hid2); - } - - /* ramping down, set voltage last */ - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x04); - local_delay(10); - } - - return 0; -} - -static unsigned int cpu_750fx_get_cpu_speed(void) -{ - if (mfspr(SPRN_HID1) & HID1_PS) - return low_freq; - else - return hi_freq; -} - -/* Switch CPU speed using DFS */ -static int dfs_set_cpu_speed(int low_speed) -{ - if (low_speed == 0) { - /* ramping up, set voltage first */ - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x05); - /* Make sure we sleep for at least 1ms */ - local_delay(1); - } - - /* set frequency */ -#ifdef CONFIG_6xx - low_choose_7447a_dfs(low_speed); -#endif - udelay(100); - - if (low_speed == 1) { - /* ramping down, set voltage last */ - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x04); - local_delay(1); - } - - return 0; -} - -static unsigned int dfs_get_cpu_speed(void) -{ - if (mfspr(SPRN_HID1) & HID1_DFS) - return low_freq; - else - return hi_freq; -} - - -/* Switch CPU speed using slewing GPIOs - */ -static int gpios_set_cpu_speed(int low_speed) -{ - int gpio, timeout = 0; - - /* If ramping up, set voltage first */ - if (low_speed == 0) { - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x05); - /* Delay is way too big but it's ok, we schedule */ - local_delay(10); - } - - /* Set frequency */ - gpio = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, frequency_gpio, 0); - if (low_speed == ((gpio & 0x01) == 0)) - goto skip; - - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, frequency_gpio, - low_speed ? 0x04 : 0x05); - udelay(200); - do { - if (++timeout > 100) - break; - local_delay(1); - gpio = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, slew_done_gpio, 0); - } while((gpio & 0x02) == 0); - skip: - /* If ramping down, set voltage last */ - if (low_speed == 1) { - pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, voltage_gpio, 0x04); - /* Delay is way too big but it's ok, we schedule */ - local_delay(10); - } - -#ifdef DEBUG_FREQ - debug_calc_bogomips(); -#endif - - return 0; -} - -/* Switch CPU speed under PMU control - */ -static int pmu_set_cpu_speed(int low_speed) -{ - struct adb_request req; - unsigned long save_l2cr; - unsigned long save_l3cr; - unsigned int pic_prio; - unsigned long flags; - - preempt_disable(); - -#ifdef DEBUG_FREQ - printk(KERN_DEBUG "HID1, before: %x\n", mfspr(SPRN_HID1)); -#endif - pmu_suspend(); - - /* Disable all interrupt sources on openpic */ - pic_prio = mpic_cpu_get_priority(); - mpic_cpu_set_priority(0xf); - - /* Make sure the decrementer won't interrupt us */ - asm volatile("mtdec %0" : : "r" (0x7fffffff)); - /* Make sure any pending DEC interrupt occurring while we did - * the above didn't re-enable the DEC */ - mb(); - asm volatile("mtdec %0" : : "r" (0x7fffffff)); - - /* We can now disable MSR_EE */ - local_irq_save(flags); - - /* Giveup the FPU & vec */ - enable_kernel_fp(); - -#ifdef CONFIG_ALTIVEC - if (cpu_has_feature(CPU_FTR_ALTIVEC)) - enable_kernel_altivec(); -#endif /* CONFIG_ALTIVEC */ - - /* Save & disable L2 and L3 caches */ - save_l3cr = _get_L3CR(); /* (returns -1 if not available) */ - save_l2cr = _get_L2CR(); /* (returns -1 if not available) */ - - /* Send the new speed command. My assumption is that this command - * will cause PLL_CFG[0..3] to be changed next time CPU goes to sleep - */ - pmu_request(&req, NULL, 6, PMU_CPU_SPEED, 'W', 'O', 'O', 'F', low_speed); - while (!req.complete) - pmu_poll(); - - /* Prepare the northbridge for the speed transition */ - pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,1,1); - - /* Call low level code to backup CPU state and recover from - * hardware reset - */ - low_sleep_handler(); - - /* Restore the northbridge */ - pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,1,0); - - /* Restore L2 cache */ - if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0) - _set_L2CR(save_l2cr); - /* Restore L3 cache */ - if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0) - _set_L3CR(save_l3cr); - - /* Restore userland MMU context */ - switch_mmu_context(NULL, current->active_mm); - -#ifdef DEBUG_FREQ - printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1)); -#endif - - /* Restore low level PMU operations */ - pmu_unlock(); - - /* - * Restore decrementer; we'll take a decrementer interrupt - * as soon as interrupts are re-enabled and the generic - * clockevents code will reprogram it with the right value. - */ - set_dec(1); - - /* Restore interrupts */ - mpic_cpu_set_priority(pic_prio); - - /* Let interrupts flow again ... */ - local_irq_restore(flags); - -#ifdef DEBUG_FREQ - debug_calc_bogomips(); -#endif - - pmu_resume(); - - preempt_enable(); - - return 0; -} - -static int do_set_cpu_speed(struct cpufreq_policy *policy, int speed_mode, - int notify) -{ - struct cpufreq_freqs freqs; - unsigned long l3cr; - static unsigned long prev_l3cr; - - freqs.old = cur_freq; - freqs.new = (speed_mode == CPUFREQ_HIGH) ? hi_freq : low_freq; - - if (freqs.old == freqs.new) - return 0; - - if (notify) - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - if (speed_mode == CPUFREQ_LOW && - cpu_has_feature(CPU_FTR_L3CR)) { - l3cr = _get_L3CR(); - if (l3cr & L3CR_L3E) { - prev_l3cr = l3cr; - _set_L3CR(0); - } - } - set_speed_proc(speed_mode == CPUFREQ_LOW); - if (speed_mode == CPUFREQ_HIGH && - cpu_has_feature(CPU_FTR_L3CR)) { - l3cr = _get_L3CR(); - if ((prev_l3cr & L3CR_L3E) && l3cr != prev_l3cr) - _set_L3CR(prev_l3cr); - } - if (notify) - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - cur_freq = (speed_mode == CPUFREQ_HIGH) ? hi_freq : low_freq; - - return 0; -} - -static unsigned int pmac_cpufreq_get_speed(unsigned int cpu) -{ - return cur_freq; -} - -static int pmac_cpufreq_verify(struct cpufreq_policy *policy) -{ - return cpufreq_frequency_table_verify(policy, pmac_cpu_freqs); -} - -static int pmac_cpufreq_target( struct cpufreq_policy *policy, - unsigned int target_freq, - unsigned int relation) -{ - unsigned int newstate = 0; - int rc; - - if (cpufreq_frequency_table_target(policy, pmac_cpu_freqs, - target_freq, relation, &newstate)) - return -EINVAL; - - rc = do_set_cpu_speed(policy, newstate, 1); - - ppc_proc_freq = cur_freq * 1000ul; - return rc; -} - -static int pmac_cpufreq_cpu_init(struct cpufreq_policy *policy) -{ - if (policy->cpu != 0) - return -ENODEV; - - policy->cpuinfo.transition_latency = transition_latency; - policy->cur = cur_freq; - - cpufreq_frequency_table_get_attr(pmac_cpu_freqs, policy->cpu); - return cpufreq_frequency_table_cpuinfo(policy, pmac_cpu_freqs); -} - -static u32 read_gpio(struct device_node *np) -{ - const u32 *reg = of_get_property(np, "reg", NULL); - u32 offset; - - if (reg == NULL) - return 0; - /* That works for all keylargos but shall be fixed properly - * some day... The problem is that it seems we can't rely - * on the "reg" property of the GPIO nodes, they are either - * relative to the base of KeyLargo or to the base of the - * GPIO space, and the device-tree doesn't help. - */ - offset = *reg; - if (offset < KEYLARGO_GPIO_LEVELS0) - offset += KEYLARGO_GPIO_LEVELS0; - return offset; -} - -static int pmac_cpufreq_suspend(struct cpufreq_policy *policy) -{ - /* Ok, this could be made a bit smarter, but let's be robust for now. We - * always force a speed change to high speed before sleep, to make sure - * we have appropriate voltage and/or bus speed for the wakeup process, - * and to make sure our loops_per_jiffies are "good enough", that is will - * not cause too short delays if we sleep in low speed and wake in high - * speed.. - */ - no_schedule = 1; - sleep_freq = cur_freq; - if (cur_freq == low_freq && !is_pmu_based) - do_set_cpu_speed(policy, CPUFREQ_HIGH, 0); - return 0; -} - -static int pmac_cpufreq_resume(struct cpufreq_policy *policy) -{ - /* If we resume, first check if we have a get() function */ - if (get_speed_proc) - cur_freq = get_speed_proc(); - else - cur_freq = 0; - - /* We don't, hrm... we don't really know our speed here, best - * is that we force a switch to whatever it was, which is - * probably high speed due to our suspend() routine - */ - do_set_cpu_speed(policy, sleep_freq == low_freq ? - CPUFREQ_LOW : CPUFREQ_HIGH, 0); - - ppc_proc_freq = cur_freq * 1000ul; - - no_schedule = 0; - return 0; -} - -static struct cpufreq_driver pmac_cpufreq_driver = { - .verify = pmac_cpufreq_verify, - .target = pmac_cpufreq_target, - .get = pmac_cpufreq_get_speed, - .init = pmac_cpufreq_cpu_init, - .suspend = pmac_cpufreq_suspend, - .resume = pmac_cpufreq_resume, - .flags = CPUFREQ_PM_NO_WARN, - .attr = pmac_cpu_freqs_attr, - .name = "powermac", - .owner = THIS_MODULE, -}; - - -static int pmac_cpufreq_init_MacRISC3(struct device_node *cpunode) -{ - struct device_node *volt_gpio_np = of_find_node_by_name(NULL, - "voltage-gpio"); - struct device_node *freq_gpio_np = of_find_node_by_name(NULL, - "frequency-gpio"); - struct device_node *slew_done_gpio_np = of_find_node_by_name(NULL, - "slewing-done"); - const u32 *value; - - /* - * Check to see if it's GPIO driven or PMU only - * - * The way we extract the GPIO address is slightly hackish, but it - * works well enough for now. We need to abstract the whole GPIO - * stuff sooner or later anyway - */ - - if (volt_gpio_np) - voltage_gpio = read_gpio(volt_gpio_np); - if (freq_gpio_np) - frequency_gpio = read_gpio(freq_gpio_np); - if (slew_done_gpio_np) - slew_done_gpio = read_gpio(slew_done_gpio_np); - - /* If we use the frequency GPIOs, calculate the min/max speeds based - * on the bus frequencies - */ - if (frequency_gpio && slew_done_gpio) { - int lenp, rc; - const u32 *freqs, *ratio; - - freqs = of_get_property(cpunode, "bus-frequencies", &lenp); - lenp /= sizeof(u32); - if (freqs == NULL || lenp != 2) { - printk(KERN_ERR "cpufreq: bus-frequencies incorrect or missing\n"); - return 1; - } - ratio = of_get_property(cpunode, "processor-to-bus-ratio*2", - NULL); - if (ratio == NULL) { - printk(KERN_ERR "cpufreq: processor-to-bus-ratio*2 missing\n"); - return 1; - } - - /* Get the min/max bus frequencies */ - low_freq = min(freqs[0], freqs[1]); - hi_freq = max(freqs[0], freqs[1]); - - /* Grrrr.. It _seems_ that the device-tree is lying on the low bus - * frequency, it claims it to be around 84Mhz on some models while - * it appears to be approx. 101Mhz on all. Let's hack around here... - * fortunately, we don't need to be too precise - */ - if (low_freq < 98000000) - low_freq = 101000000; - - /* Convert those to CPU core clocks */ - low_freq = (low_freq * (*ratio)) / 2000; - hi_freq = (hi_freq * (*ratio)) / 2000; - - /* Now we get the frequencies, we read the GPIO to see what is out current - * speed - */ - rc = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, frequency_gpio, 0); - cur_freq = (rc & 0x01) ? hi_freq : low_freq; - - set_speed_proc = gpios_set_cpu_speed; - return 1; - } - - /* If we use the PMU, look for the min & max frequencies in the - * device-tree - */ - value = of_get_property(cpunode, "min-clock-frequency", NULL); - if (!value) - return 1; - low_freq = (*value) / 1000; - /* The PowerBook G4 12" (PowerBook6,1) has an error in the device-tree - * here */ - if (low_freq < 100000) - low_freq *= 10; - - value = of_get_property(cpunode, "max-clock-frequency", NULL); - if (!value) - return 1; - hi_freq = (*value) / 1000; - set_speed_proc = pmu_set_cpu_speed; - is_pmu_based = 1; - - return 0; -} - -static int pmac_cpufreq_init_7447A(struct device_node *cpunode) -{ - struct device_node *volt_gpio_np; - - if (of_get_property(cpunode, "dynamic-power-step", NULL) == NULL) - return 1; - - volt_gpio_np = of_find_node_by_name(NULL, "cpu-vcore-select"); - if (volt_gpio_np) - voltage_gpio = read_gpio(volt_gpio_np); - if (!voltage_gpio){ - printk(KERN_ERR "cpufreq: missing cpu-vcore-select gpio\n"); - return 1; - } - - /* OF only reports the high frequency */ - hi_freq = cur_freq; - low_freq = cur_freq/2; - - /* Read actual frequency from CPU */ - cur_freq = dfs_get_cpu_speed(); - set_speed_proc = dfs_set_cpu_speed; - get_speed_proc = dfs_get_cpu_speed; - - return 0; -} - -static int pmac_cpufreq_init_750FX(struct device_node *cpunode) -{ - struct device_node *volt_gpio_np; - u32 pvr; - const u32 *value; - - if (of_get_property(cpunode, "dynamic-power-step", NULL) == NULL) - return 1; - - hi_freq = cur_freq; - value = of_get_property(cpunode, "reduced-clock-frequency", NULL); - if (!value) - return 1; - low_freq = (*value) / 1000; - - volt_gpio_np = of_find_node_by_name(NULL, "cpu-vcore-select"); - if (volt_gpio_np) - voltage_gpio = read_gpio(volt_gpio_np); - - pvr = mfspr(SPRN_PVR); - has_cpu_l2lve = !((pvr & 0xf00) == 0x100); - - set_speed_proc = cpu_750fx_cpu_speed; - get_speed_proc = cpu_750fx_get_cpu_speed; - cur_freq = cpu_750fx_get_cpu_speed(); - - return 0; -} - -/* Currently, we support the following machines: - * - * - Titanium PowerBook 1Ghz (PMU based, 667Mhz & 1Ghz) - * - Titanium PowerBook 800 (PMU based, 667Mhz & 800Mhz) - * - Titanium PowerBook 400 (PMU based, 300Mhz & 400Mhz) - * - Titanium PowerBook 500 (PMU based, 300Mhz & 500Mhz) - * - iBook2 500/600 (PMU based, 400Mhz & 500/600Mhz) - * - iBook2 700 (CPU based, 400Mhz & 700Mhz, support low voltage) - * - Recent MacRISC3 laptops - * - All new machines with 7447A CPUs - */ -static int __init pmac_cpufreq_setup(void) -{ - struct device_node *cpunode; - const u32 *value; - - if (strstr(cmd_line, "nocpufreq")) - return 0; - - /* Assume only one CPU */ - cpunode = of_find_node_by_type(NULL, "cpu"); - if (!cpunode) - goto out; - - /* Get current cpu clock freq */ - value = of_get_property(cpunode, "clock-frequency", NULL); - if (!value) - goto out; - cur_freq = (*value) / 1000; - transition_latency = CPUFREQ_ETERNAL; - - /* Check for 7447A based MacRISC3 */ - if (of_machine_is_compatible("MacRISC3") && - of_get_property(cpunode, "dynamic-power-step", NULL) && - PVR_VER(mfspr(SPRN_PVR)) == 0x8003) { - pmac_cpufreq_init_7447A(cpunode); - transition_latency = 8000000; - /* Check for other MacRISC3 machines */ - } else if (of_machine_is_compatible("PowerBook3,4") || - of_machine_is_compatible("PowerBook3,5") || - of_machine_is_compatible("MacRISC3")) { - pmac_cpufreq_init_MacRISC3(cpunode); - /* Else check for iBook2 500/600 */ - } else if (of_machine_is_compatible("PowerBook4,1")) { - hi_freq = cur_freq; - low_freq = 400000; - set_speed_proc = pmu_set_cpu_speed; - is_pmu_based = 1; - } - /* Else check for TiPb 550 */ - else if (of_machine_is_compatible("PowerBook3,3") && cur_freq == 550000) { - hi_freq = cur_freq; - low_freq = 500000; - set_speed_proc = pmu_set_cpu_speed; - is_pmu_based = 1; - } - /* Else check for TiPb 400 & 500 */ - else if (of_machine_is_compatible("PowerBook3,2")) { - /* We only know about the 400 MHz and the 500Mhz model - * they both have 300 MHz as low frequency - */ - if (cur_freq < 350000 || cur_freq > 550000) - goto out; - hi_freq = cur_freq; - low_freq = 300000; - set_speed_proc = pmu_set_cpu_speed; - is_pmu_based = 1; - } - /* Else check for 750FX */ - else if (PVR_VER(mfspr(SPRN_PVR)) == 0x7000) - pmac_cpufreq_init_750FX(cpunode); -out: - of_node_put(cpunode); - if (set_speed_proc == NULL) - return -ENODEV; - - pmac_cpu_freqs[CPUFREQ_LOW].frequency = low_freq; - pmac_cpu_freqs[CPUFREQ_HIGH].frequency = hi_freq; - ppc_proc_freq = cur_freq * 1000ul; - - printk(KERN_INFO "Registering PowerMac CPU frequency driver\n"); - printk(KERN_INFO "Low: %d Mhz, High: %d Mhz, Boot: %d Mhz\n", - low_freq/1000, hi_freq/1000, cur_freq/1000); - - return cpufreq_register_driver(&pmac_cpufreq_driver); -} - -module_init(pmac_cpufreq_setup); - diff --git a/arch/powerpc/platforms/powermac/cpufreq_64.c b/arch/powerpc/platforms/powermac/cpufreq_64.c deleted file mode 100644 index 7ba423431cf..00000000000 --- a/arch/powerpc/platforms/powermac/cpufreq_64.c +++ /dev/null @@ -1,746 +0,0 @@ -/* - * Copyright (C) 2002 - 2005 Benjamin Herrenschmidt <benh@kernel.crashing.org> - * and Markus Demleitner <msdemlei@cl.uni-heidelberg.de> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This driver adds basic cpufreq support for SMU & 970FX based G5 Macs, - * that is iMac G5 and latest single CPU desktop. - */ - -#undef DEBUG - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/sched.h> -#include <linux/cpufreq.h> -#include <linux/init.h> -#include <linux/completion.h> -#include <linux/mutex.h> -#include <asm/prom.h> -#include <asm/machdep.h> -#include <asm/irq.h> -#include <asm/sections.h> -#include <asm/cputable.h> -#include <asm/time.h> -#include <asm/smu.h> -#include <asm/pmac_pfunc.h> - -#define DBG(fmt...) pr_debug(fmt) - -/* see 970FX user manual */ - -#define SCOM_PCR 0x0aa001 /* PCR scom addr */ - -#define PCR_HILO_SELECT 0x80000000U /* 1 = PCR, 0 = PCRH */ -#define PCR_SPEED_FULL 0x00000000U /* 1:1 speed value */ -#define PCR_SPEED_HALF 0x00020000U /* 1:2 speed value */ -#define PCR_SPEED_QUARTER 0x00040000U /* 1:4 speed value */ -#define PCR_SPEED_MASK 0x000e0000U /* speed mask */ -#define PCR_SPEED_SHIFT 17 -#define PCR_FREQ_REQ_VALID 0x00010000U /* freq request valid */ -#define PCR_VOLT_REQ_VALID 0x00008000U /* volt request valid */ -#define PCR_TARGET_TIME_MASK 0x00006000U /* target time */ -#define PCR_STATLAT_MASK 0x00001f00U /* STATLAT value */ -#define PCR_SNOOPLAT_MASK 0x000000f0U /* SNOOPLAT value */ -#define PCR_SNOOPACC_MASK 0x0000000fU /* SNOOPACC value */ - -#define SCOM_PSR 0x408001 /* PSR scom addr */ -/* warning: PSR is a 64 bits register */ -#define PSR_CMD_RECEIVED 0x2000000000000000U /* command received */ -#define PSR_CMD_COMPLETED 0x1000000000000000U /* command completed */ -#define PSR_CUR_SPEED_MASK 0x0300000000000000U /* current speed */ -#define PSR_CUR_SPEED_SHIFT (56) - -/* - * The G5 only supports two frequencies (Quarter speed is not supported) - */ -#define CPUFREQ_HIGH 0 -#define CPUFREQ_LOW 1 - -static struct cpufreq_frequency_table g5_cpu_freqs[] = { - {CPUFREQ_HIGH, 0}, - {CPUFREQ_LOW, 0}, - {0, CPUFREQ_TABLE_END}, -}; - -static struct freq_attr* g5_cpu_freqs_attr[] = { - &cpufreq_freq_attr_scaling_available_freqs, - NULL, -}; - -/* Power mode data is an array of the 32 bits PCR values to use for - * the various frequencies, retrieved from the device-tree - */ -static int g5_pmode_cur; - -static void (*g5_switch_volt)(int speed_mode); -static int (*g5_switch_freq)(int speed_mode); -static int (*g5_query_freq)(void); - -static DEFINE_MUTEX(g5_switch_mutex); - -static unsigned long transition_latency; - -#ifdef CONFIG_PMAC_SMU - -static const u32 *g5_pmode_data; -static int g5_pmode_max; - -static struct smu_sdbp_fvt *g5_fvt_table; /* table of op. points */ -static int g5_fvt_count; /* number of op. points */ -static int g5_fvt_cur; /* current op. point */ - -/* - * SMU based voltage switching for Neo2 platforms - */ - -static void g5_smu_switch_volt(int speed_mode) -{ - struct smu_simple_cmd cmd; - - DECLARE_COMPLETION_ONSTACK(comp); - smu_queue_simple(&cmd, SMU_CMD_POWER_COMMAND, 8, smu_done_complete, - &comp, 'V', 'S', 'L', 'E', 'W', - 0xff, g5_fvt_cur+1, speed_mode); - wait_for_completion(&comp); -} - -/* - * Platform function based voltage/vdnap switching for Neo2 - */ - -static struct pmf_function *pfunc_set_vdnap0; -static struct pmf_function *pfunc_vdnap0_complete; - -static void g5_vdnap_switch_volt(int speed_mode) -{ - struct pmf_args args; - u32 slew, done = 0; - unsigned long timeout; - - slew = (speed_mode == CPUFREQ_LOW) ? 1 : 0; - args.count = 1; - args.u[0].p = &slew; - - pmf_call_one(pfunc_set_vdnap0, &args); - - /* It's an irq GPIO so we should be able to just block here, - * I'll do that later after I've properly tested the IRQ code for - * platform functions - */ - timeout = jiffies + HZ/10; - while(!time_after(jiffies, timeout)) { - args.count = 1; - args.u[0].p = &done; - pmf_call_one(pfunc_vdnap0_complete, &args); - if (done) - break; - msleep(1); - } - if (done == 0) - printk(KERN_WARNING "cpufreq: Timeout in clock slewing !\n"); -} - - -/* - * SCOM based frequency switching for 970FX rev3 - */ -static int g5_scom_switch_freq(int speed_mode) -{ - unsigned long flags; - int to; - - /* If frequency is going up, first ramp up the voltage */ - if (speed_mode < g5_pmode_cur) - g5_switch_volt(speed_mode); - - local_irq_save(flags); - - /* Clear PCR high */ - scom970_write(SCOM_PCR, 0); - /* Clear PCR low */ - scom970_write(SCOM_PCR, PCR_HILO_SELECT | 0); - /* Set PCR low */ - scom970_write(SCOM_PCR, PCR_HILO_SELECT | - g5_pmode_data[speed_mode]); - - /* Wait for completion */ - for (to = 0; to < 10; to++) { - unsigned long psr = scom970_read(SCOM_PSR); - - if ((psr & PSR_CMD_RECEIVED) == 0 && - (((psr >> PSR_CUR_SPEED_SHIFT) ^ - (g5_pmode_data[speed_mode] >> PCR_SPEED_SHIFT)) & 0x3) - == 0) - break; - if (psr & PSR_CMD_COMPLETED) - break; - udelay(100); - } - - local_irq_restore(flags); - - /* If frequency is going down, last ramp the voltage */ - if (speed_mode > g5_pmode_cur) - g5_switch_volt(speed_mode); - - g5_pmode_cur = speed_mode; - ppc_proc_freq = g5_cpu_freqs[speed_mode].frequency * 1000ul; - - return 0; -} - -static int g5_scom_query_freq(void) -{ - unsigned long psr = scom970_read(SCOM_PSR); - int i; - - for (i = 0; i <= g5_pmode_max; i++) - if ((((psr >> PSR_CUR_SPEED_SHIFT) ^ - (g5_pmode_data[i] >> PCR_SPEED_SHIFT)) & 0x3) == 0) - break; - return i; -} - -/* - * Fake voltage switching for platforms with missing support - */ - -static void g5_dummy_switch_volt(int speed_mode) -{ -} - -#endif /* CONFIG_PMAC_SMU */ - -/* - * Platform function based voltage switching for PowerMac7,2 & 7,3 - */ - -static struct pmf_function *pfunc_cpu0_volt_high; -static struct pmf_function *pfunc_cpu0_volt_low; -static struct pmf_function *pfunc_cpu1_volt_high; -static struct pmf_function *pfunc_cpu1_volt_low; - -static void g5_pfunc_switch_volt(int speed_mode) -{ - if (speed_mode == CPUFREQ_HIGH) { - if (pfunc_cpu0_volt_high) - pmf_call_one(pfunc_cpu0_volt_high, NULL); - if (pfunc_cpu1_volt_high) - pmf_call_one(pfunc_cpu1_volt_high, NULL); - } else { - if (pfunc_cpu0_volt_low) - pmf_call_one(pfunc_cpu0_volt_low, NULL); - if (pfunc_cpu1_volt_low) - pmf_call_one(pfunc_cpu1_volt_low, NULL); - } - msleep(10); /* should be faster , to fix */ -} - -/* - * Platform function based frequency switching for PowerMac7,2 & 7,3 - */ - -static struct pmf_function *pfunc_cpu_setfreq_high; -static struct pmf_function *pfunc_cpu_setfreq_low; -static struct pmf_function *pfunc_cpu_getfreq; -static struct pmf_function *pfunc_slewing_done; - -static int g5_pfunc_switch_freq(int speed_mode) -{ - struct pmf_args args; - u32 done = 0; - unsigned long timeout; - int rc; - - DBG("g5_pfunc_switch_freq(%d)\n", speed_mode); - - /* If frequency is going up, first ramp up the voltage */ - if (speed_mode < g5_pmode_cur) - g5_switch_volt(speed_mode); - - /* Do it */ - if (speed_mode == CPUFREQ_HIGH) - rc = pmf_call_one(pfunc_cpu_setfreq_high, NULL); - else - rc = pmf_call_one(pfunc_cpu_setfreq_low, NULL); - - if (rc) - printk(KERN_WARNING "cpufreq: pfunc switch error %d\n", rc); - - /* It's an irq GPIO so we should be able to just block here, - * I'll do that later after I've properly tested the IRQ code for - * platform functions - */ - timeout = jiffies + HZ/10; - while(!time_after(jiffies, timeout)) { - args.count = 1; - args.u[0].p = &done; - pmf_call_one(pfunc_slewing_done, &args); - if (done) - break; - msleep(1); - } - if (done == 0) - printk(KERN_WARNING "cpufreq: Timeout in clock slewing !\n"); - - /* If frequency is going down, last ramp the voltage */ - if (speed_mode > g5_pmode_cur) - g5_switch_volt(speed_mode); - - g5_pmode_cur = speed_mode; - ppc_proc_freq = g5_cpu_freqs[speed_mode].frequency * 1000ul; - - return 0; -} - -static int g5_pfunc_query_freq(void) -{ - struct pmf_args args; - u32 val = 0; - - args.count = 1; - args.u[0].p = &val; - pmf_call_one(pfunc_cpu_getfreq, &args); - return val ? CPUFREQ_HIGH : CPUFREQ_LOW; -} - - -/* - * Common interface to the cpufreq core - */ - -static int g5_cpufreq_verify(struct cpufreq_policy *policy) -{ - return cpufreq_frequency_table_verify(policy, g5_cpu_freqs); -} - -static int g5_cpufreq_target(struct cpufreq_policy *policy, - unsigned int target_freq, unsigned int relation) -{ - unsigned int newstate = 0; - struct cpufreq_freqs freqs; - int rc; - - if (cpufreq_frequency_table_target(policy, g5_cpu_freqs, - target_freq, relation, &newstate)) - return -EINVAL; - - if (g5_pmode_cur == newstate) - return 0; - - mutex_lock(&g5_switch_mutex); - - freqs.old = g5_cpu_freqs[g5_pmode_cur].frequency; - freqs.new = g5_cpu_freqs[newstate].frequency; - - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); - rc = g5_switch_freq(newstate); - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - - mutex_unlock(&g5_switch_mutex); - - return rc; -} - -static unsigned int g5_cpufreq_get_speed(unsigned int cpu) -{ - return g5_cpu_freqs[g5_pmode_cur].frequency; -} - -static int g5_cpufreq_cpu_init(struct cpufreq_policy *policy) -{ - policy->cpuinfo.transition_latency = transition_latency; - policy->cur = g5_cpu_freqs[g5_query_freq()].frequency; - /* secondary CPUs are tied to the primary one by the - * cpufreq core if in the secondary policy we tell it that - * it actually must be one policy together with all others. */ - cpumask_copy(policy->cpus, cpu_online_mask); - cpufreq_frequency_table_get_attr(g5_cpu_freqs, policy->cpu); - - return cpufreq_frequency_table_cpuinfo(policy, - g5_cpu_freqs); -} - - -static struct cpufreq_driver g5_cpufreq_driver = { - .name = "powermac", - .owner = THIS_MODULE, - .flags = CPUFREQ_CONST_LOOPS, - .init = g5_cpufreq_cpu_init, - .verify = g5_cpufreq_verify, - .target = g5_cpufreq_target, - .get = g5_cpufreq_get_speed, - .attr = g5_cpu_freqs_attr, -}; - - -#ifdef CONFIG_PMAC_SMU - -static int __init g5_neo2_cpufreq_init(struct device_node *cpus) -{ - struct device_node *cpunode; - unsigned int psize, ssize; - unsigned long max_freq; - char *freq_method, *volt_method; - const u32 *valp; - u32 pvr_hi; - int use_volts_vdnap = 0; - int use_volts_smu = 0; - int rc = -ENODEV; - - /* Check supported platforms */ - if (of_machine_is_compatible("PowerMac8,1") || - of_machine_is_compatible("PowerMac8,2") || - of_machine_is_compatible("PowerMac9,1")) - use_volts_smu = 1; - else if (of_machine_is_compatible("PowerMac11,2")) - use_volts_vdnap = 1; - else - return -ENODEV; - - /* Get first CPU node */ - for (cpunode = NULL; - (cpunode = of_get_next_child(cpus, cpunode)) != NULL;) { - const u32 *reg = of_get_property(cpunode, "reg", NULL); - if (reg == NULL || (*reg) != 0) - continue; - if (!strcmp(cpunode->type, "cpu")) - break; - } - if (cpunode == NULL) { - printk(KERN_ERR "cpufreq: Can't find any CPU 0 node\n"); - return -ENODEV; - } - - /* Check 970FX for now */ - valp = of_get_property(cpunode, "cpu-version", NULL); - if (!valp) { - DBG("No cpu-version property !\n"); - goto bail_noprops; - } - pvr_hi = (*valp) >> 16; - if (pvr_hi != 0x3c && pvr_hi != 0x44) { - printk(KERN_ERR "cpufreq: Unsupported CPU version\n"); - goto bail_noprops; - } - - /* Look for the powertune data in the device-tree */ - g5_pmode_data = of_get_property(cpunode, "power-mode-data",&psize); - if (!g5_pmode_data) { - DBG("No power-mode-data !\n"); - goto bail_noprops; - } - g5_pmode_max = psize / sizeof(u32) - 1; - - if (use_volts_smu) { - const struct smu_sdbp_header *shdr; - - /* Look for the FVT table */ - shdr = smu_get_sdb_partition(SMU_SDB_FVT_ID, NULL); - if (!shdr) - goto bail_noprops; - g5_fvt_table = (struct smu_sdbp_fvt *)&shdr[1]; - ssize = (shdr->len * sizeof(u32)) - - sizeof(struct smu_sdbp_header); - g5_fvt_count = ssize / sizeof(struct smu_sdbp_fvt); - g5_fvt_cur = 0; - - /* Sanity checking */ - if (g5_fvt_count < 1 || g5_pmode_max < 1) - goto bail_noprops; - - g5_switch_volt = g5_smu_switch_volt; - volt_method = "SMU"; - } else if (use_volts_vdnap) { - struct device_node *root; - - root = of_find_node_by_path("/"); - if (root == NULL) { - printk(KERN_ERR "cpufreq: Can't find root of " - "device tree\n"); - goto bail_noprops; - } - pfunc_set_vdnap0 = pmf_find_function(root, "set-vdnap0"); - pfunc_vdnap0_complete = - pmf_find_function(root, "slewing-done"); - if (pfunc_set_vdnap0 == NULL || - pfunc_vdnap0_complete == NULL) { - printk(KERN_ERR "cpufreq: Can't find required " - "platform function\n"); - goto bail_noprops; - } - - g5_switch_volt = g5_vdnap_switch_volt; - volt_method = "GPIO"; - } else { - g5_switch_volt = g5_dummy_switch_volt; - volt_method = "none"; - } - - /* - * From what I see, clock-frequency is always the maximal frequency. - * The current driver can not slew sysclk yet, so we really only deal - * with powertune steps for now. We also only implement full freq and - * half freq in this version. So far, I haven't yet seen a machine - * supporting anything else. - */ - valp = of_get_property(cpunode, "clock-frequency", NULL); - if (!valp) - return -ENODEV; - max_freq = (*valp)/1000; - g5_cpu_freqs[0].frequency = max_freq; - g5_cpu_freqs[1].frequency = max_freq/2; - - /* Set callbacks */ - transition_latency = 12000; - g5_switch_freq = g5_scom_switch_freq; - g5_query_freq = g5_scom_query_freq; - freq_method = "SCOM"; - - /* Force apply current frequency to make sure everything is in - * sync (voltage is right for example). Firmware may leave us with - * a strange setting ... - */ - g5_switch_volt(CPUFREQ_HIGH); - msleep(10); - g5_pmode_cur = -1; - g5_switch_freq(g5_query_freq()); - - printk(KERN_INFO "Registering G5 CPU frequency driver\n"); - printk(KERN_INFO "Frequency method: %s, Voltage method: %s\n", - freq_method, volt_method); - printk(KERN_INFO "Low: %d Mhz, High: %d Mhz, Cur: %d MHz\n", - g5_cpu_freqs[1].frequency/1000, - g5_cpu_freqs[0].frequency/1000, - g5_cpu_freqs[g5_pmode_cur].frequency/1000); - - rc = cpufreq_register_driver(&g5_cpufreq_driver); - - /* We keep the CPU node on hold... hopefully, Apple G5 don't have - * hotplug CPU with a dynamic device-tree ... - */ - return rc; - - bail_noprops: - of_node_put(cpunode); - - return rc; -} - -#endif /* CONFIG_PMAC_SMU */ - - -static int __init g5_pm72_cpufreq_init(struct device_node *cpus) -{ - struct device_node *cpuid = NULL, *hwclock = NULL, *cpunode = NULL; - const u8 *eeprom = NULL; - const u32 *valp; - u64 max_freq, min_freq, ih, il; - int has_volt = 1, rc = 0; - - DBG("cpufreq: Initializing for PowerMac7,2, PowerMac7,3 and" - " RackMac3,1...\n"); - - /* Get first CPU node */ - for (cpunode = NULL; - (cpunode = of_get_next_child(cpus, cpunode)) != NULL;) { - if (!strcmp(cpunode->type, "cpu")) - break; - } - if (cpunode == NULL) { - printk(KERN_ERR "cpufreq: Can't find any CPU node\n"); - return -ENODEV; - } - - /* Lookup the cpuid eeprom node */ - cpuid = of_find_node_by_path("/u3@0,f8000000/i2c@f8001000/cpuid@a0"); - if (cpuid != NULL) - eeprom = of_get_property(cpuid, "cpuid", NULL); - if (eeprom == NULL) { - printk(KERN_ERR "cpufreq: Can't find cpuid EEPROM !\n"); - rc = -ENODEV; - goto bail; - } - - /* Lookup the i2c hwclock */ - for (hwclock = NULL; - (hwclock = of_find_node_by_name(hwclock, "i2c-hwclock")) != NULL;){ - const char *loc = of_get_property(hwclock, - "hwctrl-location", NULL); - if (loc == NULL) - continue; - if (strcmp(loc, "CPU CLOCK")) - continue; - if (!of_get_property(hwclock, "platform-get-frequency", NULL)) - continue; - break; - } - if (hwclock == NULL) { - printk(KERN_ERR "cpufreq: Can't find i2c clock chip !\n"); - rc = -ENODEV; - goto bail; - } - - DBG("cpufreq: i2c clock chip found: %s\n", hwclock->full_name); - - /* Now get all the platform functions */ - pfunc_cpu_getfreq = - pmf_find_function(hwclock, "get-frequency"); - pfunc_cpu_setfreq_high = - pmf_find_function(hwclock, "set-frequency-high"); - pfunc_cpu_setfreq_low = - pmf_find_function(hwclock, "set-frequency-low"); - pfunc_slewing_done = - pmf_find_function(hwclock, "slewing-done"); - pfunc_cpu0_volt_high = - pmf_find_function(hwclock, "set-voltage-high-0"); - pfunc_cpu0_volt_low = - pmf_find_function(hwclock, "set-voltage-low-0"); - pfunc_cpu1_volt_high = - pmf_find_function(hwclock, "set-voltage-high-1"); - pfunc_cpu1_volt_low = - pmf_find_function(hwclock, "set-voltage-low-1"); - - /* Check we have minimum requirements */ - if (pfunc_cpu_getfreq == NULL || pfunc_cpu_setfreq_high == NULL || - pfunc_cpu_setfreq_low == NULL || pfunc_slewing_done == NULL) { - printk(KERN_ERR "cpufreq: Can't find platform functions !\n"); - rc = -ENODEV; - goto bail; - } - - /* Check that we have complete sets */ - if (pfunc_cpu0_volt_high == NULL || pfunc_cpu0_volt_low == NULL) { - pmf_put_function(pfunc_cpu0_volt_high); - pmf_put_function(pfunc_cpu0_volt_low); - pfunc_cpu0_volt_high = pfunc_cpu0_volt_low = NULL; - has_volt = 0; - } - if (!has_volt || - pfunc_cpu1_volt_high == NULL || pfunc_cpu1_volt_low == NULL) { - pmf_put_function(pfunc_cpu1_volt_high); - pmf_put_function(pfunc_cpu1_volt_low); - pfunc_cpu1_volt_high = pfunc_cpu1_volt_low = NULL; - } - - /* Note: The device tree also contains a "platform-set-values" - * function for which I haven't quite figured out the usage. It - * might have to be called on init and/or wakeup, I'm not too sure - * but things seem to work fine without it so far ... - */ - - /* Get max frequency from device-tree */ - valp = of_get_property(cpunode, "clock-frequency", NULL); - if (!valp) { - printk(KERN_ERR "cpufreq: Can't find CPU frequency !\n"); - rc = -ENODEV; - goto bail; - } - - max_freq = (*valp)/1000; - - /* Now calculate reduced frequency by using the cpuid input freq - * ratio. This requires 64 bits math unless we are willing to lose - * some precision - */ - ih = *((u32 *)(eeprom + 0x10)); - il = *((u32 *)(eeprom + 0x20)); - - /* Check for machines with no useful settings */ - if (il == ih) { - printk(KERN_WARNING "cpufreq: No low frequency mode available" - " on this model !\n"); - rc = -ENODEV; - goto bail; - } - - min_freq = 0; - if (ih != 0 && il != 0) - min_freq = (max_freq * il) / ih; - - /* Sanity check */ - if (min_freq >= max_freq || min_freq < 1000) { - printk(KERN_ERR "cpufreq: Can't calculate low frequency !\n"); - rc = -ENXIO; - goto bail; - } - g5_cpu_freqs[0].frequency = max_freq; - g5_cpu_freqs[1].frequency = min_freq; - - /* Set callbacks */ - transition_latency = CPUFREQ_ETERNAL; - g5_switch_volt = g5_pfunc_switch_volt; - g5_switch_freq = g5_pfunc_switch_freq; - g5_query_freq = g5_pfunc_query_freq; - - /* Force apply current frequency to make sure everything is in - * sync (voltage is right for example). Firmware may leave us with - * a strange setting ... - */ - g5_switch_volt(CPUFREQ_HIGH); - msleep(10); - g5_pmode_cur = -1; - g5_switch_freq(g5_query_freq()); - - printk(KERN_INFO "Registering G5 CPU frequency driver\n"); - printk(KERN_INFO "Frequency method: i2c/pfunc, " - "Voltage method: %s\n", has_volt ? "i2c/pfunc" : "none"); - printk(KERN_INFO "Low: %d Mhz, High: %d Mhz, Cur: %d MHz\n", - g5_cpu_freqs[1].frequency/1000, - g5_cpu_freqs[0].frequency/1000, - g5_cpu_freqs[g5_pmode_cur].frequency/1000); - - rc = cpufreq_register_driver(&g5_cpufreq_driver); - bail: - if (rc != 0) { - pmf_put_function(pfunc_cpu_getfreq); - pmf_put_function(pfunc_cpu_setfreq_high); - pmf_put_function(pfunc_cpu_setfreq_low); - pmf_put_function(pfunc_slewing_done); - pmf_put_function(pfunc_cpu0_volt_high); - pmf_put_function(pfunc_cpu0_volt_low); - pmf_put_function(pfunc_cpu1_volt_high); - pmf_put_function(pfunc_cpu1_volt_low); - } - of_node_put(hwclock); - of_node_put(cpuid); - of_node_put(cpunode); - - return rc; -} - -static int __init g5_cpufreq_init(void) -{ - struct device_node *cpus; - int rc = 0; - - cpus = of_find_node_by_path("/cpus"); - if (cpus == NULL) { - DBG("No /cpus node !\n"); - return -ENODEV; - } - - if (of_machine_is_compatible("PowerMac7,2") || - of_machine_is_compatible("PowerMac7,3") || - of_machine_is_compatible("RackMac3,1")) - rc = g5_pm72_cpufreq_init(cpus); -#ifdef CONFIG_PMAC_SMU - else - rc = g5_neo2_cpufreq_init(cpus); -#endif /* CONFIG_PMAC_SMU */ - - of_node_put(cpus); - return rc; -} - -module_init(g5_cpufreq_init); - - -MODULE_LICENSE("GPL"); diff --git a/arch/x86/include/asm/acpi.h b/arch/x86/include/asm/acpi.h index b31bf97775f..2dfac58f3b1 100644 --- a/arch/x86/include/asm/acpi.h +++ b/arch/x86/include/asm/acpi.h @@ -111,7 +111,7 @@ static inline void acpi_disable_pci(void) } /* Low-level suspend routine. */ -extern int acpi_suspend_lowlevel(void); +extern int (*acpi_suspend_lowlevel)(void); /* Physical address to resume after wakeup */ #define acpi_wakeup_address ((unsigned long)(real_mode_header->wakeup_start)) diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 230c8ea878e..d81a972dd50 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -44,6 +44,7 @@ #include <asm/mpspec.h> #include <asm/smp.h> +#include "sleep.h" /* To include x86_acpi_suspend_lowlevel */ static int __initdata acpi_force = 0; u32 acpi_rsdt_forced; int acpi_disabled; @@ -559,6 +560,12 @@ static int acpi_register_gsi_ioapic(struct device *dev, u32 gsi, int (*__acpi_register_gsi)(struct device *dev, u32 gsi, int trigger, int polarity) = acpi_register_gsi_pic; +#ifdef CONFIG_ACPI_SLEEP +int (*acpi_suspend_lowlevel)(void) = x86_acpi_suspend_lowlevel; +#else +int (*acpi_suspend_lowlevel)(void); +#endif + /* * success: return IRQ number (>=0) * failure: return < 0 diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index b44577bc974..2a34aaf3c8f 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -26,12 +26,12 @@ static char temp_stack[4096]; #endif /** - * acpi_suspend_lowlevel - save kernel state + * x86_acpi_suspend_lowlevel - save kernel state * * Create an identity mapped page table and copy the wakeup routine to * low memory. */ -int acpi_suspend_lowlevel(void) +int x86_acpi_suspend_lowlevel(void) { struct wakeup_header *header = (struct wakeup_header *) __va(real_mode_header->wakeup_header); diff --git a/arch/x86/kernel/acpi/sleep.h b/arch/x86/kernel/acpi/sleep.h index 67f59f8c695..c9c2c982d5e 100644 --- a/arch/x86/kernel/acpi/sleep.h +++ b/arch/x86/kernel/acpi/sleep.h @@ -15,3 +15,5 @@ extern unsigned long acpi_copy_wakeup_routine(unsigned long); extern void wakeup_long64(void); extern void do_suspend_lowlevel(void); + +extern int x86_acpi_suspend_lowlevel(void); |