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* clk: Hi6220: separately build stub clock driverLeo Yan2015-09-032-2/+9
| | | | | | | | | | | | | | | The previous code, kernel builds Hi6220's common clock driver and stub clock driver together. Stub clock driver has introduced the dependency with CONFIG_MAILBOX, so kernel will not build Hi6220's common clock driver due ARM64's defconfig have not enabled CONFIG_MAILBOX by default. So separately build stub clock driver and common clock driver for Hi6220; and only let stub clock driver has the dependency with CONFIG_MAILBOX. Signed-off-by: Leo Yan <leo.yan@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: Hi6220: add stub clock driverLeo Yan2015-08-253-2/+278
| | | | | | | | | | | | | | | | On Hi6220, there have some clocks which can use mailbox channel to send messages to power controller to change frequency; this includes CPU, GPU and DDR clocks. For dynamic frequency scaling, firstly need write the frequency value to SRAM region, and then send message to mailbox to trigger power controller to handle this requirement. This driver will use syscon APIs to pass SRAM memory region and use common mailbox APIs for channels accessing. This init driver will support cpu frequency change firstly. Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: hisi: refine parameter checking for initLeo Yan2015-08-031-8/+3Star
| | | | | | | | | | *of_iomap()* will check the device node pointer, and if the pointer is NULL it will return error code. So refine clock's init flow by checking the device node with this simple way; and polish a little for the print out message. Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* Merge branch 'cleanup-clk-h-includes' into clk-nextStephen Boyd2015-07-284-8/+1Star
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * cleanup-clk-h-includes: (62 commits) clk: Remove clk.h from clk-provider.h clk: h8300: Remove clk.h and clkdev.h includes clk: at91: Include clk.h and slab.h clk: ti: Switch clk-provider.h include to clk.h clk: pistachio: Include clk.h clk: ingenic: Include clk.h clk: si570: Include clk.h clk: moxart: Include clk.h clk: cdce925: Include clk.h clk: Include clk.h in clk.c clk: zynq: Include clk.h clk: ti: Include clk.h clk: sunxi: Include clk.h and remove unused clkdev.h includes clk: st: Include clk.h clk: qcom: Include clk.h clk: highbank: Include clk.h clk: bcm: Include clk.h clk: versatile: Remove clk.h and clkdev.h includes clk: ux500: Remove clk.h and clkdev.h includes clk: tegra: Properly include clk.h ...
| * clk: hisilicon: Remove clk.h includeStephen Boyd2015-07-204-8/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | Clock provider drivers generally shouldn't include clk.h because it's the consumer API. Remove the include here because this is a provider driver. Also drop the clkdev.h include in files that aren't using it. Cc: Bintian Wang <bintian.wang@huawei.com> Cc: Zhangfei Gao <zhangfei.gao@linaro.org> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* | clk: fix some determine_rate implementationsBoris Brezillon2015-07-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some determine_rate implementations are not returning an error when they failed to adapt the rate according to the rate request. Fix them so that they return an error instead of silently returning 0. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> CC: Jonathan Corbet <corbet@lwn.net> CC: Tony Lindgren <tony@atomide.com> CC: Ralf Baechle <ralf@linux-mips.org> CC: "Emilio López" <emilio@elopez.com.ar> CC: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Tero Kristo <t-kristo@ti.com> CC: Peter De Schrijver <pdeschrijver@nvidia.com> CC: Prashant Gaikwad <pgaikwad@nvidia.com> CC: Stephen Warren <swarren@wwwdotorg.org> CC: Thierry Reding <thierry.reding@gmail.com> CC: Alexandre Courbot <gnurou@gmail.com> CC: linux-doc@vger.kernel.org CC: linux-kernel@vger.kernel.org CC: linux-arm-kernel@lists.infradead.org CC: linux-omap@vger.kernel.org CC: linux-mips@linux-mips.org CC: linux-tegra@vger.kernel.org Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* | clk: change clk_ops' ->determine_rate() prototypeBoris Brezillon2015-07-281-22/+17Star
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clock rates are stored in an unsigned long field, but ->determine_rate() (which returns a rounded rate from a requested one) returns a long value (errors are reported using negative error codes), which can lead to long overflow if the clock rate exceed 2Ghz. Change ->determine_rate() prototype to return 0 or an error code, and pass a pointer to a clk_rate_request structure containing the expected target rate and the rate constraints imposed by clk users. The clk_rate_request structure might be extended in the future to contain other kind of constraints like the rounding policy, the maximum clock inaccuracy or other things that are not yet supported by the CCF (power consumption constraints ?). Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> CC: Jonathan Corbet <corbet@lwn.net> CC: Tony Lindgren <tony@atomide.com> CC: Ralf Baechle <ralf@linux-mips.org> CC: "Emilio López" <emilio@elopez.com.ar> CC: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Tero Kristo <t-kristo@ti.com> CC: Peter De Schrijver <pdeschrijver@nvidia.com> CC: Prashant Gaikwad <pgaikwad@nvidia.com> CC: Stephen Warren <swarren@wwwdotorg.org> CC: Thierry Reding <thierry.reding@gmail.com> CC: Alexandre Courbot <gnurou@gmail.com> CC: linux-doc@vger.kernel.org CC: linux-kernel@vger.kernel.org CC: linux-arm-kernel@lists.infradead.org CC: linux-omap@vger.kernel.org CC: linux-mips@linux-mips.org CC: linux-tegra@vger.kernel.org [sboyd@codeaurora.org: Fix parent dereference problem in __clk_determine_rate()] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Romain Perier <romain.perier@gmail.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> [sboyd@codeaurora.org: Folded in fix from Heiko for fixed-rate clocks without parents or a rate determining op] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: make several parent names constUwe Kleine-König2015-06-043-39/+39
| | | | | | | | | | | Since commit 2893c379461a ("clk: make strings in parent name arrays const") the name of parent clocks can be const. So add more const in several clock drivers. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* Merge branch 'clk-next-hi6220' into clk-nextMichael Turquette2015-06-046-12/+505
|\ | | | | | | | | Conflicts: drivers/clk/Kconfig
| * clk: hi6220: Clock driver support for Hisilicon hi6220 SoCBintian Wang2015-06-046-1/+494
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add clock drivers for hi6220 SoC, this driver controls the SoC registers to supply different clocks to different IPs in the SoC. We add one divider clock for hi6220 because the divider in hi6220 also has a mask bit but it doesnot obey the rule defined by flag "CLK_DIVIDER_HIWORD_MASK", we can not get index of the mask bit by left shift fixed bits (e.g. 16 bits), so we add this divider clock to handle it. Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org> Signed-off-by: Bintian Wang <bintian.wang@huawei.com> Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org> Reviewed-by: Zhangfei Gao <zhangfei.gao@linaro.org> Tested-by: Will Deacon <will.deacon@arm.com> Tested-by: Tyler Baker <tyler.baker@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Michael Turquette <mturquette@linaro.org>
| * clk: hisilicon: Remove __init for marking function prototypesBintian Wang2015-06-031-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | __init markings on function prototypes are useless, so remove them. Suggested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Bintian Wang <bintian.wang@huawei.com> Tested-by: Will Deacon <will.deacon@arm.com> Tested-by: Tyler Baker <tyler.baker@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Michael Turquette <mturquette@linaro.org>
* | clk: hix5hd2: Silence sparse warningsStephen Boyd2015-05-151-2/+3
|/ | | | | | | drivers/clk/hisilicon/clk-hix5hd2.c:255:13: warning: symbol 'hix5hd2_clk_register_complex' was not declared. Should it be static? Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk: don't use __initconst for non-const arraysUwe Kleine-König2015-04-132-38/+38
| | | | | | | | | | | | | | | | | | | | | | | | | The statement static const char *name[]; defines a modifiable array of pointers to constant chars. That is *name[0] = 'f'; is forbidden, but name[0] = "f"; is not. So marking an array that is defined as above with __initconst is wrong. Either an additional const must be added such that the whole definition reads: static const char *const name[] __initconst; or where this is not possible __initdata must be used. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Michael Turquette <mturquette@linaro.org>
* clk: Add rate constraints to clocksTomeu Vizoso2015-02-021-0/+2
| | | | | | | | | | | | | | | | Adds a way for clock consumers to set maximum and minimum rates. This can be used for thermal drivers to set minimum rates, or by misc. drivers to set maximum rates to assure a minimum performance level. Changes the signature of the determine_rate callback by adding the parameters min_rate and max_rate. Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> [sboyd@codeaurora.org: set req_rate in __clk_init] Signed-off-by: Michael Turquette <mturquette@linaro.org> [mturquette@linaro.org: min/max rate for sun6i_ahb1_clk_determine_rate migrated clk-private.h changes to clk.c]
* clk: Change clk_ops->determine_rate to return a clk_hw as the best parentTomeu Vizoso2014-12-041-1/+1
| | | | | | | | This is in preparation for clock providers to not have to deal with struct clk. Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@linaro.org>
* clk: hi3620: Move const initdata into correct code sectionBintian Wang2014-11-201-35/+35
| | | | | | | | Use __initconst instead of __initdata for constant init data. Signed-off-by: Bintian Wang <bintian.wang@huawei.com> Acked-by: Haojian Zhuang <haojian.zhuang@linaro.org> Signed-off-by: Michael Turquette <mturquette@linaro.org>
* clk: hix5hd2: add I2C clocksWei Yan2014-09-281-0/+25
| | | | | | | | hix5hd2 add I2C clocks (I2C0~i2C5) Signed-off-by: Wei Yan <sledge.yanwei@huawei.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
* clk: hix5hd2: add watchdog0 clocksGuoxiong Yan2014-09-281-0/+5
| | | | | | | | hix5hd2 add watchdog0 clocks Signed-off-by: Guoxiong Yan <yanguoxiong@huawei.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
* clk: hix5hd2: add sd clkJiancheng Xue2014-09-281-6/+15
| | | | | | Signed-off-by: Jiancheng Xue <xuejiancheng@huawei.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
* clk: hix5hd2: add complex clkZhangfei Gao2014-09-281-0/+181
| | | | | | | | Support clk of sata, usb and ethernet Signed-off-by: Jiancheng Xue <xuejiancheng@huawei.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Wei Xu <xuwei5@hisilicon.com>
* clk: hisi: add clk-hix5hd2.cZhangfei Gao2014-05-122-0/+102
| | | | | | Signed-off-by: Haifeng Yan <haifeng.yan@linaro.org> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
* clk: hisi: add hisi_clk_register_gateZhangfei Gao2014-05-122-0/+30
| | | | | | | Add hisi_clk_register_gate register clk gate table Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
* clk: hisi: use clk_register_mux_table in hisi_clk_register_muxZhangfei Gao2014-05-122-5/+9
| | | | | | | Platform hix5hd2 use mux table, so use clk_register_mux_table instead Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
* clk: hisilicon: fix warning from smatchZhangfei Gao2014-03-211-8/+7Star
| | | | | | | | | drivers/clk/hisilicon/clk-hi3620.c:338 mmc_clk_delay() warn: always true condition '(para >= 0) => (0-u32max >= 0)' Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Mike Turquette <mturquette@linaro.org>
* Merge tag 'clk-hisi' of ↵Mike Turquette2014-03-195-39/+128
|\ | | | | | | | | | | https://git.kernel.org/pub/scm/linux/kernel/git/hzhuang1/linux into clk-next-hisilcon updating clock drivers for Hisilicon
| * clk: hisi: remove static variableHaojian Zhuang2014-03-194-42/+72
| | | | | | | | | | | | | | Remove the static variable. So these common clock register helper could be used in more SoCs. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
| * clk: hip04: add clock driverHaojian Zhuang2014-03-192-1/+58
| | | | | | | | | | | | Now only fixed rate clocks are appended into the clock driver. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
| * clk: hisi: assign missing clk to tableHaojian Zhuang2014-03-191-0/+2
| | | | | | | | | | | | The fixed rate and fixed factor clock isn't registered to clk table. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
* | clk: hisilicon: add hi3620_mmc_clksZhangfei Gao2014-02-271-0/+274
|/ | | | | | | | | | | Suggest by Arnd: abstract mmc tuning as clock behavior, also because different soc have different tuning method and registers. hi3620_mmc_clks is added to handle mmc clock specifically on hi3620. Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
* clk: hi3620: add gate clock flagHaojian Zhuang2013-12-111-59/+59
| | | | | | Add missing CLK_SET_RATE_PARENT flag for gate clock. Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
* clk: hi3620: fix wrong flags on dividerHaojian Zhuang2013-12-111-11/+11
| | | | | | | The flags on dividers should be CLK_DIVIDER_HIWORD_MASK, not CLK_MUX_HIWORD_MASK. Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
* clk: hisilicon: add common clock supportHaojian Zhuang2013-12-045-0/+651
Enable common clock driver of Hi3620 SoC. clkgate-seperated driver is used to support the clock gate that enable/disable/status registers are seperated. Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
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