Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

  CC      arch/mips/loongson64/lemote-2f/clock.o
/home/ralf/src/linux/linux-mips/arch/mips/loongson64/lemote-2f/clock.c:18:40: fatal error: asm/mach-loongson/loongson.h: No such file or directory
 #include <asm/mach-loongson/loongson.h>
                                        ^
compilation terminated.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Currently, code of Loongson-2/3 is under loongson directory and code of
Loongson-1 is under loongson1 directory. Besides, there are Kconfig
options such as MACH_LOONGSON and MACH_LOONGSON1. This naming style is
very ugly and confusing. Since Loongson-2/3 are both 64-bit general-
purpose CPU while Loongson-1 is 32-bit SoC, we rename both file names
and Kconfig symbols from loongson/loongson1 to loongson64/loongson32.

[ralf@linux-mips.org: Resolve a number of simple conflicts.]
Signed-off-by: NHuacai Chen <chenhc@lemote.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Kelvin Cheung <keguang.zhang@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/9790/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

During 3.16 merge window, parts of the commit 8e8acb32
(MIPS/loongson2_cpufreq: Fix CPU clock rate setting) seem to have
been deleted probably due to a mismerge, and as a result cpufreq
is broken again on Loongson2 boards in 3.16 and newer kernels.
Fix by repeating the fix.
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Cc: stable@vger.kernel.org # 3.16
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7835/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch is prepared for Multi-chip interconnection. Since each chip
has a ChipConfig register, LOONGSON_CHIPCFG should be an array.
Signed-off-by: NHuacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/7185/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Loongson2 has been using (incorrectly) kHz for cpu_clk rate. This has
been unnoticed, as loongson2_cpufreq was the only place where the rate
was set/get. After commit 652ed95d
(cpufreq: introduce cpufreq_generic_get() routine) things however broke,
and now loops_per_jiffy adjustments are incorrect (1000 times too long).
The patch fixes this by changing cpu_clk rate to Hz.
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Cc: stable@vger.kernel.org
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: cpufreq@vger.kernel.org
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Patchwork: https://patchwork.linux-mips.org/patch/6678/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The cpufreq core now supports the cpufreq_for_each_entry macro helper
for iteration over the cpufreq_frequency_table, so use it.

It should have no functional changes.
Signed-off-by: NStratos Karafotis <stratosk@semaphore.gr>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

Currently cpufreq frequency table has two fields: frequency and driver_data.
driver_data is only for drivers' internal use and cpufreq core shouldn't use
it at all. But with the introduction of BOOST frequencies, this assumption
was broken and we started using it as a flag instead.

There are two problems due to this:
- It is against the description of this field, as driver's data is used by
  the core now.
- if drivers fill it with -3 for any frequency, then those frequencies are
  never considered by cpufreq core as it is exactly same as value of
  CPUFREQ_BOOST_FREQ, i.e. ~2.

The best way to get this fixed is by creating another field flags which
will be used for such flags. This patch does that. Along with that various
drivers need modifications due to the change of struct cpufreq_frequency_table.
Reviewed-by: NGautham R Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/6320/

The "index" field of struct cpufreq_frequency_table was never an
index and isn't used at all by the cpufreq core.  It only is useful
for cpufreq drivers for their internal purposes.

Many people nowadays blindly set it in ascending order with the
assumption that the core will use it, which is a mistake.

Rename it to "driver_data" as that's what its purpose is. All of its
users are updated accordingly.

[rjw: Changelog]
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

For unexplainable reasons the Loongson 2 clock API was implemented in a
module so fixing this involved shifting large amounts of code around.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Fix the following compilation failure with v3.2-rc1 by including module.h:

  CC [M]  arch/mips/kernel/cpufreq/loongson2_clock.o
arch/mips/kernel/cpufreq/loongson2_clock.c:39:1: error: data definition has no type or storage class [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:39:1: error: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL' [-Werror=implicit-int]
arch/mips/kernel/cpufreq/loongson2_clock.c:39:1: error: parameter names (without types) in function declaration [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:51:1: error: data definition has no type or storage class [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:51:1: error: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Werror=implicit-int]
arch/mips/kernel/cpufreq/loongson2_clock.c:51:1: error: parameter names (without types) in function declaration [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:71:1: error: data definition has no type or storage class [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:71:1: error: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Werror=implicit-int]
arch/mips/kernel/cpufreq/loongson2_clock.c:71:1: error: parameter names (without types) in function declaration [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:76:1: error: data definition has no type or storage class [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:76:1: error: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Werror=implicit-int]
arch/mips/kernel/cpufreq/loongson2_clock.c:76:1: error: parameter names (without types) in function declaration [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:82:1: error: data definition has no type or storage class [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:82:1: error: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Werror=implicit-int]
arch/mips/kernel/cpufreq/loongson2_clock.c:82:1: error: parameter names (without types) in function declaration [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:87:1: error: data definition has no type or storage class [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:87:1: error: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Werror=implicit-int]
arch/mips/kernel/cpufreq/loongson2_clock.c:87:1: error: parameter names (without types) in function declaration [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:93:1: error: data definition has no type or storage class [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:93:1: error: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL' [-Werror=implicit-int]
arch/mips/kernel/cpufreq/loongson2_clock.c:93:1: error: parameter names (without types) in function declaration [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:131:1: error: data definition has no type or storage class [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:131:1: error: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL' [-Werror=implicit-int]
arch/mips/kernel/cpufreq/loongson2_clock.c:131:1: error: parameter names (without types) in function declaration [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:147:1: error: data definition has no type or storage class [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:147:1: error: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL' [-Werror=implicit-int]
arch/mips/kernel/cpufreq/loongson2_clock.c:147:1: error: parameter names (without types) in function declaration [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:166:1: error: data definition has no type or storage class [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:166:1: error: type defaults to 'int' in declaration of 'EXPORT_SYMBOL_GPL' [-Werror=implicit-int]
arch/mips/kernel/cpufreq/loongson2_clock.c:166:1: error: parameter names (without types) in function declaration [-Werror]
arch/mips/kernel/cpufreq/loongson2_clock.c:168:15: error: expected declaration specifiers or '...' before string constant
arch/mips/kernel/cpufreq/loongson2_clock.c:169:20: error: expected declaration specifiers or '...' before string constant
arch/mips/kernel/cpufreq/loongson2_clock.c:170:16: error: expected declaration specifiers or '...' before string constant
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2922/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

This patch fixes a kernel warning when loading the the loongson2_clock
driver:

"Feb 25 23:42:27 localhost kernel: [    4.965000] loongson2_clock: module
license 'unspecified' taints kernel."
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Reported-by: NLiu Shiwei <liushiwei@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/1045/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Loongson 2F supports CPU clock scaling. When put it into wait mode by
setting the frequency as ZERO it will stay in this mode until an external
interrupt wakes the CPU again.

To enable clock scaling support, an external timer of a known stable rate
is required.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: cpufreq@vger.kernel.org,
Cc: Dave Jones <davej@redhat.com>,
Cc: Dominik Brodowski <linux@dominikbrodowski.net>,
Cc: yanh@lemote.com
Cc: huhb@lemote.com,
Patchwork: http://patchwork.linux-mips.org/patch/660/
Patchwork: http://patchwork.linux-mips.org/patch/751/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>