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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-14 13:41:48 +0900 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-11-14 13:41:48 +0900 |
commit | f9300eaaac1ca300083ad41937923a90cc3a2394 (patch) | |
tree | 724b72ad729a8b85c09d2d54f8ca7d8ba22d774f /drivers/cpufreq/omap-cpufreq.c | |
parent | 7f2dc5c4bcbff035b0d03f7aa78a182664b21e47 (diff) | |
parent | faddf2f5d278f1656e9444961bdd8d9db4deb5bf (diff) | |
download | blackbird-op-linux-f9300eaaac1ca300083ad41937923a90cc3a2394.tar.gz blackbird-op-linux-f9300eaaac1ca300083ad41937923a90cc3a2394.zip |
Merge tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael J Wysocki:
- New power capping framework and the the Intel Running Average Power
Limit (RAPL) driver using it from Srinivas Pandruvada and Jacob Pan.
- Addition of the in-kernel switching feature to the arm_big_little
cpufreq driver from Viresh Kumar and Nicolas Pitre.
- cpufreq support for iMac G5 from Aaro Koskinen.
- Baytrail processors support for intel_pstate from Dirk Brandewie.
- cpufreq support for Midway/ECX-2000 from Mark Langsdorf.
- ARM vexpress/TC2 cpufreq support from Sudeep KarkadaNagesha.
- ACPI power management support for the I2C and SPI bus types from Mika
Westerberg and Lv Zheng.
- cpufreq core fixes and cleanups from Viresh Kumar, Srivatsa S Bhat,
Stratos Karafotis, Xiaoguang Chen, Lan Tianyu.
- cpufreq drivers updates (mostly fixes and cleanups) from Viresh
Kumar, Aaro Koskinen, Jungseok Lee, Sudeep KarkadaNagesha, Lukasz
Majewski, Manish Badarkhe, Hans-Christian Egtvedt, Evgeny Kapaev.
- intel_pstate updates from Dirk Brandewie and Adrian Huang.
- ACPICA update to version 20130927 includig fixes and cleanups and
some reduction of divergences between the ACPICA code in the kernel
and ACPICA upstream in order to improve the automatic ACPICA patch
generation process. From Bob Moore, Lv Zheng, Tomasz Nowicki, Naresh
Bhat, Bjorn Helgaas, David E Box.
- ACPI IPMI driver fixes and cleanups from Lv Zheng.
- ACPI hotplug fixes and cleanups from Bjorn Helgaas, Toshi Kani, Zhang
Yanfei, Rafael J Wysocki.
- Conversion of the ACPI AC driver to the platform bus type and
multiple driver fixes and cleanups related to ACPI from Zhang Rui.
- ACPI processor driver fixes and cleanups from Hanjun Guo, Jiang Liu,
Bartlomiej Zolnierkiewicz, Mathieu Rhéaume, Rafael J Wysocki.
- Fixes and cleanups and new blacklist entries related to the ACPI
video support from Aaron Lu, Felipe Contreras, Lennart Poettering,
Kirill Tkhai.
- cpuidle core cleanups from Viresh Kumar and Lorenzo Pieralisi.
- cpuidle drivers fixes and cleanups from Daniel Lezcano, Jingoo Han,
Bartlomiej Zolnierkiewicz, Prarit Bhargava.
- devfreq updates from Sachin Kamat, Dan Carpenter, Manish Badarkhe.
- Operation Performance Points (OPP) core updates from Nishanth Menon.
- Runtime power management core fix from Rafael J Wysocki and update
from Ulf Hansson.
- Hibernation fixes from Aaron Lu and Rafael J Wysocki.
- Device suspend/resume lockup detection mechanism from Benoit Goby.
- Removal of unused proc directories created for various ACPI drivers
from Lan Tianyu.
- ACPI LPSS driver fix and new device IDs for the ACPI platform scan
handler from Heikki Krogerus and Jarkko Nikula.
- New ACPI _OSI blacklist entry for Toshiba NB100 from Levente Kurusa.
- Assorted fixes and cleanups related to ACPI from Andy Shevchenko, Al
Stone, Bartlomiej Zolnierkiewicz, Colin Ian King, Dan Carpenter,
Felipe Contreras, Jianguo Wu, Lan Tianyu, Yinghai Lu, Mathias Krause,
Liu Chuansheng.
- Assorted PM fixes and cleanups from Andy Shevchenko, Thierry Reding,
Jean-Christophe Plagniol-Villard.
* tag 'pm+acpi-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (386 commits)
cpufreq: conservative: fix requested_freq reduction issue
ACPI / hotplug: Consolidate deferred execution of ACPI hotplug routines
PM / runtime: Use pm_runtime_put_sync() in __device_release_driver()
ACPI / event: remove unneeded NULL pointer check
Revert "ACPI / video: Ignore BIOS initial backlight value for HP 250 G1"
ACPI / video: Quirk initial backlight level 0
ACPI / video: Fix initial level validity test
intel_pstate: skip the driver if ACPI has power mgmt option
PM / hibernate: Avoid overflow in hibernate_preallocate_memory()
ACPI / hotplug: Do not execute "insert in progress" _OST
ACPI / hotplug: Carry out PCI root eject directly
ACPI / hotplug: Merge device hot-removal routines
ACPI / hotplug: Make acpi_bus_hot_remove_device() internal
ACPI / hotplug: Simplify device ejection routines
ACPI / hotplug: Fix handle_root_bridge_removal()
ACPI / hotplug: Refuse to hot-remove all objects with disabled hotplug
ACPI / scan: Start matching drivers after trying scan handlers
ACPI: Remove acpi_pci_slot_init() headers from internal.h
ACPI / blacklist: fix name of ThinkPad Edge E530
PowerCap: Fix build error with option -Werror=format-security
...
Conflicts:
arch/arm/mach-omap2/opp.c
drivers/Kconfig
drivers/spi/spi.c
Diffstat (limited to 'drivers/cpufreq/omap-cpufreq.c')
-rw-r--r-- | drivers/cpufreq/omap-cpufreq.c | 143 |
1 files changed, 35 insertions, 108 deletions
diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c index f31fcfcad514..be6d14307aa8 100644 --- a/drivers/cpufreq/omap-cpufreq.c +++ b/drivers/cpufreq/omap-cpufreq.c @@ -22,7 +22,7 @@ #include <linux/err.h> #include <linux/clk.h> #include <linux/io.h> -#include <linux/opp.h> +#include <linux/pm_opp.h> #include <linux/cpu.h> #include <linux/module.h> #include <linux/platform_device.h> @@ -40,13 +40,6 @@ static struct clk *mpu_clk; static struct device *mpu_dev; static struct regulator *mpu_reg; -static int omap_verify_speed(struct cpufreq_policy *policy) -{ - if (!freq_table) - return -EINVAL; - return cpufreq_frequency_table_verify(policy, freq_table); -} - static unsigned int omap_getspeed(unsigned int cpu) { unsigned long rate; @@ -58,42 +51,16 @@ static unsigned int omap_getspeed(unsigned int cpu) return rate; } -static int omap_target(struct cpufreq_policy *policy, - unsigned int target_freq, - unsigned int relation) +static int omap_target(struct cpufreq_policy *policy, unsigned int index) { - unsigned int i; - int r, ret = 0; - struct cpufreq_freqs freqs; - struct opp *opp; + struct dev_pm_opp *opp; unsigned long freq, volt = 0, volt_old = 0, tol = 0; + unsigned int old_freq, new_freq; - if (!freq_table) { - dev_err(mpu_dev, "%s: cpu%d: no freq table!\n", __func__, - policy->cpu); - return -EINVAL; - } + old_freq = omap_getspeed(policy->cpu); + new_freq = freq_table[index].frequency; - ret = cpufreq_frequency_table_target(policy, freq_table, target_freq, - relation, &i); - if (ret) { - dev_dbg(mpu_dev, "%s: cpu%d: no freq match for %d(ret=%d)\n", - __func__, policy->cpu, target_freq, ret); - return ret; - } - freqs.new = freq_table[i].frequency; - if (!freqs.new) { - dev_err(mpu_dev, "%s: cpu%d: no match for freq %d\n", __func__, - policy->cpu, target_freq); - return -EINVAL; - } - - freqs.old = omap_getspeed(policy->cpu); - - if (freqs.old == freqs.new && policy->cur == freqs.new) - return ret; - - freq = freqs.new * 1000; + freq = new_freq * 1000; ret = clk_round_rate(mpu_clk, freq); if (IS_ERR_VALUE(ret)) { dev_warn(mpu_dev, @@ -105,143 +72,103 @@ static int omap_target(struct cpufreq_policy *policy, if (mpu_reg) { rcu_read_lock(); - opp = opp_find_freq_ceil(mpu_dev, &freq); + opp = dev_pm_opp_find_freq_ceil(mpu_dev, &freq); if (IS_ERR(opp)) { rcu_read_unlock(); dev_err(mpu_dev, "%s: unable to find MPU OPP for %d\n", - __func__, freqs.new); + __func__, new_freq); return -EINVAL; } - volt = opp_get_voltage(opp); + volt = dev_pm_opp_get_voltage(opp); rcu_read_unlock(); tol = volt * OPP_TOLERANCE / 100; volt_old = regulator_get_voltage(mpu_reg); } dev_dbg(mpu_dev, "cpufreq-omap: %u MHz, %ld mV --> %u MHz, %ld mV\n", - freqs.old / 1000, volt_old ? volt_old / 1000 : -1, - freqs.new / 1000, volt ? volt / 1000 : -1); - - /* notifiers */ - cpufreq_notify_transition(policy, &freqs, CPUFREQ_PRECHANGE); + old_freq / 1000, volt_old ? volt_old / 1000 : -1, + new_freq / 1000, volt ? volt / 1000 : -1); /* scaling up? scale voltage before frequency */ - if (mpu_reg && (freqs.new > freqs.old)) { + if (mpu_reg && (new_freq > old_freq)) { r = regulator_set_voltage(mpu_reg, volt - tol, volt + tol); if (r < 0) { dev_warn(mpu_dev, "%s: unable to scale voltage up.\n", __func__); - freqs.new = freqs.old; - goto done; + return r; } } - ret = clk_set_rate(mpu_clk, freqs.new * 1000); + ret = clk_set_rate(mpu_clk, new_freq * 1000); /* scaling down? scale voltage after frequency */ - if (mpu_reg && (freqs.new < freqs.old)) { + if (mpu_reg && (new_freq < old_freq)) { r = regulator_set_voltage(mpu_reg, volt - tol, volt + tol); if (r < 0) { dev_warn(mpu_dev, "%s: unable to scale voltage down.\n", __func__); - ret = clk_set_rate(mpu_clk, freqs.old * 1000); - freqs.new = freqs.old; - goto done; + clk_set_rate(mpu_clk, old_freq * 1000); + return r; } } - freqs.new = omap_getspeed(policy->cpu); - -done: - /* notifiers */ - cpufreq_notify_transition(policy, &freqs, CPUFREQ_POSTCHANGE); - return ret; } static inline void freq_table_free(void) { if (atomic_dec_and_test(&freq_table_users)) - opp_free_cpufreq_table(mpu_dev, &freq_table); + dev_pm_opp_free_cpufreq_table(mpu_dev, &freq_table); } static int omap_cpu_init(struct cpufreq_policy *policy) { - int result = 0; + int result; mpu_clk = clk_get(NULL, "cpufreq_ck"); if (IS_ERR(mpu_clk)) return PTR_ERR(mpu_clk); - if (policy->cpu >= NR_CPUS) { - result = -EINVAL; - goto fail_ck; - } - - policy->cur = omap_getspeed(policy->cpu); - - if (!freq_table) - result = opp_init_cpufreq_table(mpu_dev, &freq_table); - - if (result) { - dev_err(mpu_dev, "%s: cpu%d: failed creating freq table[%d]\n", + if (!freq_table) { + result = dev_pm_opp_init_cpufreq_table(mpu_dev, &freq_table); + if (result) { + dev_err(mpu_dev, + "%s: cpu%d: failed creating freq table[%d]\n", __func__, policy->cpu, result); - goto fail_ck; + goto fail; + } } atomic_inc_return(&freq_table_users); - result = cpufreq_frequency_table_cpuinfo(policy, freq_table); - if (result) - goto fail_table; - - cpufreq_frequency_table_get_attr(freq_table, policy->cpu); - - policy->cur = omap_getspeed(policy->cpu); - - /* - * On OMAP SMP configuartion, both processors share the voltage - * and clock. So both CPUs needs to be scaled together and hence - * needs software co-ordination. Use cpufreq affected_cpus - * interface to handle this scenario. Additional is_smp() check - * is to keep SMP_ON_UP build working. - */ - if (is_smp()) - cpumask_setall(policy->cpus); - /* FIXME: what's the actual transition time? */ - policy->cpuinfo.transition_latency = 300 * 1000; - - return 0; + result = cpufreq_generic_init(policy, freq_table, 300 * 1000); + if (!result) + return 0; -fail_table: freq_table_free(); -fail_ck: +fail: clk_put(mpu_clk); return result; } static int omap_cpu_exit(struct cpufreq_policy *policy) { + cpufreq_frequency_table_put_attr(policy->cpu); freq_table_free(); clk_put(mpu_clk); return 0; } -static struct freq_attr *omap_cpufreq_attr[] = { - &cpufreq_freq_attr_scaling_available_freqs, - NULL, -}; - static struct cpufreq_driver omap_driver = { .flags = CPUFREQ_STICKY, - .verify = omap_verify_speed, - .target = omap_target, + .verify = cpufreq_generic_frequency_table_verify, + .target_index = omap_target, .get = omap_getspeed, .init = omap_cpu_init, .exit = omap_cpu_exit, .name = "omap", - .attr = omap_cpufreq_attr, + .attr = cpufreq_generic_attr, }; static int omap_cpufreq_probe(struct platform_device *pdev) |