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Message-Id: <1403855872-14749-1-git-send-email-tomeu.vizoso@collabora.com> Date: Fri, 27 Jun 2014 09:57:47 +0200 From: Tomeu Vizoso <tomeu.vizoso@...labora.com> To: Stephen Warren <swarren@...dotorg.org>, Thierry Reding <thierry.reding@...il.com>, Mike Turquette <mturquette@...aro.org>, Rabin Vincent <rabin.vincent@...ricsson.com>, linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org Cc: Tomeu Vizoso <tomeu.vizoso@...labora.com> Subject: [RFC 0/5] Per-user clock constraints Hi, I'm retaking Rabin's patches [0] for splitting the clk API in two: one API for clk consumers and another for providers. The consumer API uses a clk structure that just keeps track of the consumer and has a reference to the actual clk_core struct, which is used internally. I have kept a patch from Rabin that aims to aid in debugging nested enable/disable calls, though my personal aim is to allow more than one consumer to influence the final, effective rate. For now this is limited to setting floor and ceiling constraints. For those functions in the consumer clk API that were called from providers, I have added variants to clk-provider.h that are the same only that accept a clk_core instead. In this first version of the patchset, these functions are prepended with two underscores and have the _internal suffix at the end. Mike has stated his preference of not prefixing with underscores any public API and I agree with him, but we still need a way to distinguish e.g. clk_set_parent() in the provider API from that in the consumer API (and from the lock-less variant in clk-provider.h!). Something else I have inconclusively wondered about are the clk_register_*() functions, that are defined as part of the provider API but that are called everywhere in arch/ and its returned clk is passed to all kinds of consumer API. I'm afraid this is still very preliminar, and the only platform that I have checked that builds is Tegra. There will be a fair amount of changes needed in arch/, but that depends on the outcome of this discussion. [0] http://thread.gmane.org/gmane.linux.kernel/1402006 Thanks, Tomeu Rabin Vincent (2): clk: use struct clk only for external API clk: per-user clock accounting for debug Tomeu Vizoso (3): clk: Add temporary mapping to the existing API clk: Move all drivers to use internal API clk: Add floor and ceiling constraints to clock rates drivers/clk/at91/clk-main.c | 24 +- drivers/clk/at91/clk-master.c | 6 +- drivers/clk/at91/clk-peripheral.c | 12 +- drivers/clk/at91/clk-pll.c | 6 +- drivers/clk/at91/clk-plldiv.c | 6 +- drivers/clk/at91/clk-programmable.c | 10 +- drivers/clk/at91/clk-slow.c | 24 +- drivers/clk/at91/clk-smd.c | 6 +- drivers/clk/at91/clk-system.c | 6 +- drivers/clk/at91/clk-usb.c | 18 +- drivers/clk/at91/clk-utmi.c | 6 +- drivers/clk/bcm/clk-kona-setup.c | 6 +- drivers/clk/bcm/clk-kona.c | 12 +- drivers/clk/bcm/clk-kona.h | 2 +- drivers/clk/berlin/berlin2-avpll.c | 4 +- drivers/clk/berlin/berlin2-avpll.h | 4 +- drivers/clk/berlin/berlin2-div.c | 2 +- drivers/clk/berlin/berlin2-div.h | 2 +- drivers/clk/berlin/berlin2-pll.c | 2 +- drivers/clk/berlin/berlin2-pll.h | 2 +- drivers/clk/berlin/bg2.c | 13 +- drivers/clk/berlin/bg2q.c | 9 +- drivers/clk/clk-axi-clkgen.c | 2 +- drivers/clk/clk-axm5516.c | 4 +- drivers/clk/clk-bcm2835.c | 2 +- drivers/clk/clk-composite.c | 6 +- drivers/clk/clk-devres.c | 14 +- drivers/clk/clk-divider.c | 8 +- drivers/clk/clk-efm32gg.c | 2 +- drivers/clk/clk-fixed-factor.c | 6 +- drivers/clk/clk-fixed-rate.c | 8 +- drivers/clk/clk-fractional-divider.c | 4 +- drivers/clk/clk-gate.c | 4 +- drivers/clk/clk-highbank.c | 8 +- drivers/clk/clk-ls1x.c | 16 +- drivers/clk/clk-max77686.c | 10 +- drivers/clk/clk-moxart.c | 8 +- drivers/clk/clk-mux.c | 6 +- drivers/clk/clk-nomadik.c | 14 +- drivers/clk/clk-nspire.c | 4 +- drivers/clk/clk-ppc-corenet.c | 8 +- drivers/clk/clk-s2mps11.c | 6 +- drivers/clk/clk-si5351.c | 17 +- drivers/clk/clk-si570.c | 4 +- drivers/clk/clk-twl6040.c | 2 +- drivers/clk/clk-u300.c | 12 +- drivers/clk/clk-vt8500.c | 4 +- drivers/clk/clk-wm831x.c | 6 +- drivers/clk/clk-xgene.c | 12 +- drivers/clk/clk.c | 666 ++++++++++++++++++++---------- drivers/clk/clk.h | 9 +- drivers/clk/clkdev.c | 102 +++-- drivers/clk/hisilicon/clk-hi3620.c | 8 +- drivers/clk/hisilicon/clk.c | 16 +- drivers/clk/hisilicon/clk.h | 2 +- drivers/clk/hisilicon/clkgate-separated.c | 4 +- drivers/clk/keystone/gate.c | 6 +- drivers/clk/keystone/pll.c | 10 +- drivers/clk/mmp/clk-apbc.c | 4 +- drivers/clk/mmp/clk-apmu.c | 4 +- drivers/clk/mmp/clk-frac.c | 4 +- drivers/clk/mmp/clk-mmp2.c | 14 +- drivers/clk/mmp/clk-pxa168.c | 12 +- drivers/clk/mmp/clk-pxa910.c | 12 +- drivers/clk/mmp/clk.h | 8 +- drivers/clk/mvebu/clk-corediv.c | 4 +- drivers/clk/mvebu/clk-cpu.c | 8 +- drivers/clk/mvebu/common.c | 14 +- drivers/clk/mxs/clk-div.c | 4 +- drivers/clk/mxs/clk-frac.c | 4 +- drivers/clk/mxs/clk-imx23.c | 4 +- drivers/clk/mxs/clk-imx28.c | 4 +- drivers/clk/mxs/clk-pll.c | 4 +- drivers/clk/mxs/clk-ref.c | 4 +- drivers/clk/mxs/clk-ssp.c | 2 +- drivers/clk/mxs/clk.h | 16 +- drivers/clk/qcom/clk-rcg.c | 6 +- drivers/clk/qcom/clk-rcg2.c | 14 +- drivers/clk/qcom/clk-regmap.c | 2 +- drivers/clk/qcom/clk-regmap.h | 2 +- drivers/clk/qcom/common.c | 6 +- drivers/clk/qcom/gcc-msm8660.c | 2 +- drivers/clk/qcom/gcc-msm8960.c | 2 +- drivers/clk/qcom/gcc-msm8974.c | 2 +- drivers/clk/qcom/mmcc-msm8960.c | 11 +- drivers/clk/rockchip/clk-rockchip.c | 2 +- drivers/clk/samsung/clk-exynos-audss.c | 16 +- drivers/clk/samsung/clk-exynos4.c | 6 +- drivers/clk/samsung/clk-pll.c | 6 +- drivers/clk/samsung/clk-pll.h | 2 +- drivers/clk/samsung/clk-s3c2410-dclk.c | 10 +- drivers/clk/samsung/clk.c | 22 +- drivers/clk/samsung/clk.h | 2 +- drivers/clk/shmobile/clk-div6.c | 2 +- drivers/clk/shmobile/clk-emev2.c | 4 +- drivers/clk/shmobile/clk-mstp.c | 6 +- drivers/clk/shmobile/clk-r8a7740.c | 6 +- drivers/clk/shmobile/clk-r8a7779.c | 6 +- drivers/clk/shmobile/clk-rcar-gen2.c | 10 +- drivers/clk/shmobile/clk-rz.c | 6 +- drivers/clk/sirf/clk-atlas6.c | 2 +- drivers/clk/sirf/clk-common.c | 30 +- drivers/clk/sirf/clk-prima2.c | 2 +- drivers/clk/socfpga/clk-gate.c | 2 +- drivers/clk/socfpga/clk-periph.c | 2 +- drivers/clk/socfpga/clk-pll.c | 4 +- drivers/clk/spear/clk-aux-synth.c | 8 +- drivers/clk/spear/clk-frac-synth.c | 4 +- drivers/clk/spear/clk-gpt-synth.c | 4 +- drivers/clk/spear/clk-vco-pll.c | 8 +- drivers/clk/spear/clk.h | 14 +- drivers/clk/spear/spear1310_clock.c | 2 +- drivers/clk/spear/spear1340_clock.c | 2 +- drivers/clk/spear/spear3xx_clock.c | 8 +- drivers/clk/spear/spear6xx_clock.c | 2 +- drivers/clk/st/clkgen-fsyn.c | 22 +- drivers/clk/st/clkgen-mux.c | 32 +- drivers/clk/st/clkgen-pll.c | 34 +- drivers/clk/sunxi/clk-a10-hosc.c | 2 +- drivers/clk/sunxi/clk-a20-gmac.c | 2 +- drivers/clk/sunxi/clk-factors.c | 4 +- drivers/clk/sunxi/clk-sun6i-apb0-gates.c | 2 +- drivers/clk/sunxi/clk-sun6i-apb0.c | 2 +- drivers/clk/sunxi/clk-sun6i-ar100.c | 6 +- drivers/clk/sunxi/clk-sunxi.c | 18 +- drivers/clk/tegra/clk-audio-sync.c | 4 +- drivers/clk/tegra/clk-divider.c | 4 +- drivers/clk/tegra/clk-periph-gate.c | 4 +- drivers/clk/tegra/clk-periph.c | 8 +- drivers/clk/tegra/clk-pll-out.c | 4 +- drivers/clk/tegra/clk-pll.c | 40 +- drivers/clk/tegra/clk-super.c | 4 +- drivers/clk/tegra/clk-tegra-audio.c | 4 +- drivers/clk/tegra/clk-tegra-fixed.c | 8 +- drivers/clk/tegra/clk-tegra-periph.c | 12 +- drivers/clk/tegra/clk-tegra-pmc.c | 4 +- drivers/clk/tegra/clk-tegra-super-gen4.c | 8 +- drivers/clk/tegra/clk-tegra114.c | 10 +- drivers/clk/tegra/clk-tegra124.c | 6 +- drivers/clk/tegra/clk-tegra20.c | 12 +- drivers/clk/tegra/clk-tegra30.c | 8 +- drivers/clk/tegra/clk.c | 24 +- drivers/clk/tegra/clk.h | 38 +- drivers/clk/ti/apll.c | 8 +- drivers/clk/ti/clk-2xxx.c | 8 +- drivers/clk/ti/clk-33xx.c | 18 +- drivers/clk/ti/clk-3xxx.c | 8 +- drivers/clk/ti/clk-43xx.c | 8 +- drivers/clk/ti/clk-44xx.c | 16 +- drivers/clk/ti/clk-54xx.c | 25 +- drivers/clk/ti/clk-7xx.c | 16 +- drivers/clk/ti/clk-dra7-atl.c | 6 +- drivers/clk/ti/clk.c | 2 +- drivers/clk/ti/clockdomain.c | 4 +- drivers/clk/ti/composite.c | 2 +- drivers/clk/ti/divider.c | 6 +- drivers/clk/ti/dpll.c | 8 +- drivers/clk/ti/fixed-factor.c | 2 +- drivers/clk/ti/gate.c | 2 +- drivers/clk/ti/interface.c | 2 +- drivers/clk/ti/mux.c | 6 +- drivers/clk/ux500/abx500-clk.c | 2 +- drivers/clk/ux500/clk-prcc.c | 8 +- drivers/clk/ux500/clk-prcmu.c | 16 +- drivers/clk/ux500/clk-sysctrl.c | 10 +- drivers/clk/ux500/clk.h | 22 +- drivers/clk/ux500/u8500_clk.c | 2 +- drivers/clk/ux500/u8500_of_clk.c | 12 +- drivers/clk/ux500/u8540_clk.c | 2 +- drivers/clk/versatile/clk-icst.c | 4 +- drivers/clk/versatile/clk-icst.h | 2 +- drivers/clk/versatile/clk-impd1.c | 18 +- drivers/clk/versatile/clk-integrator.c | 2 +- drivers/clk/versatile/clk-realview.c | 2 +- drivers/clk/versatile/clk-sp810.c | 30 +- drivers/clk/versatile/clk-vexpress-osc.c | 2 +- drivers/clk/versatile/clk-vexpress.c | 6 +- drivers/clk/x86/clk-lpt.c | 2 +- drivers/clk/zynq/clkc.c | 22 +- drivers/clk/zynq/pll.c | 4 +- include/linux/clk-private.h | 43 +- include/linux/clk-provider.h | 110 ++--- include/linux/clk.h | 39 +- include/linux/clk/ti.h | 10 +- include/linux/clk/zynq.h | 3 +- include/linux/clkdev.h | 24 +- include/linux/platform_data/si5351.h | 4 +- 187 files changed, 1399 insertions(+), 1050 deletions(-) -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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