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2014-01-08Merge tag 'for_3.14/samsung-clk' of ↵Mike Turquette
git://git.kernel.org/pub/scm/linux/kernel/git/tfiga/samsung-clk into clk-next-samsung (A bit late) first round of Samsung clock patches for v3.14.
2014-01-08ARM: dts: Add clock provider specific properties to max77686 nodeTomasz Figa
This patch adds a label and #clock-cells property to device node of max77686 PMIC to allow using it as a clock provider. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-01-08clk: max77686: Register OF clock providerTomasz Figa
If max77686 chip is instantiated from device tree, it is desirable to have an OF clock provider to allow device tree based look-up of clocks. This patch adds OF clock provider registration to the clk-max77686 driver. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-01-08clk: max77686: Refactor driver data handlingTomasz Figa
As a prerequisite for further patch adding OF clock provider support to the driver, this patch changes the driver to store an array of struct clk * as driver data. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-01-08clk: max77686: Fix clean-up in error and remove pathsTomasz Figa
This patch fixes invalid kfree() and adds missing call to clk_unregister() in error and remove paths in max77686_clk_probe(). While at it, error handling is also cleaned up. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-01-08clk: max77686: Make max77686_clk_register() return struct clk *Tomasz Figa
As a preparation for further patches, this patch modifies the clock registration helper function to return a pointer to the newly registered clock. No functional change is done to the driver. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-01-08clk: max77686: Refactor successful exit of probe functionTomasz Figa
The function can simply return 0, without jumping to a separate label, which does exactly the same. This patch does not introduce any functional change, just a clean-up. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-01-08clk: max77686: Provide .recalc_rate() operationTomasz Figa
It is usually nice to know frequency of a clock, so this patch adds a .recalc_rate() callback returning rates of provided clocks. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-01-08clk: max77686: Correct callback used for checking clock statusTomasz Figa
Changing status of clock gates in max77686 requires i2c transfers, which can sleep, so this is done in prepare and unprepare callbacks. Due to this, checking whether whether the clock is ungated must be done in is_prepared() callback as well, for consistency. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-01-08MAINTAINERS: Add entry for Samsung SoC clock driversTomasz Figa
This patch adds an entry for Samsung SoC clock drivers located under drivers/clk/samsung/ directory, with me taking the maintainer role. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Acked-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
2014-01-08ARM: dts: exynos5420: add input clocks to audss clock controllerAndrew Bresticker
Specify the remaining input clocks (pll_ref, pll_in, and sclk_pcm_in) for the AudioSS clock controller. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08clk: exynos-audss: add support for Exynos 5420Andrew Bresticker
The AudioSS block on Exynos 5420 has an additional clock gate for the ADMA bus clock. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08ARM: dts: exynos5250: add input clocks to audss clock controllerAndrew Bresticker
Specify pll_ref, pll_in, sclk_audio, and sclk_pcm_in for the AudioSS clock controller. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08clk: exynos5250: add clock ID for div_pcm0Andrew Bresticker
There is no gate for the PCM clock input to the AudioSS block, so the parent of sclk_pcm is div_pcm0. Add a clock ID for it so that we can reference it in device trees. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08clk: exynos-audss: allow input clocks to be specified in device treeAndrew Bresticker
This allows the input clocks to the Exynos AudioSS block to be specified via device-tree bindings. Default names will be used when an input clock is not given. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08clk: exynos-audss: convert to platform deviceAndrew Bresticker
The Exynos AudioSS clock controller will later be modified to allow input clocks to be specified via device-tree in order to support multiple Exynos SoCs. This will introduce a dependency on the core SoC clock controller being initialized first so that the AudioSS driver can look up its input clocks, but the order in which clock providers are probed in of_clk_init() is not guaranteed. Since deferred probing is not supported in of_clk_init() and the AudioSS block is not the core controller, we can initialize it later as a platform device. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Acked-by: Tomasz Figa <t.figa@samsung.com> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08clk: exynos5440: replace clock ID private enums with IDs from DT headerAndrzej Hajda
The patch replaces private enum clock IDs in the driver with macros provided by the DT header. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08ARM: exynos5440: create a DT header defining CLK IDsAndrzej Hajda
The patch adds header file defining clock IDs. This allows to use macros instead of magic numbers in DT bindings. Signed-off-by: Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> Signed-off-by: Kyungmin Park <kyungmin.park-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08clk: exynos5420: replace clock ID private enums with IDs from DT headerAndrzej Hajda
The patch replaces private enum clock IDs in the driver with macros provided by the DT header. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08ARM: exynos5420: create a DT header defining CLK IDsAndrzej Hajda
The patch adds header file defining clock IDs. This allows to use macros instead of magic numbers in DT bindings. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08clk: exynos5250: replace clock ID private enums with IDs from DT headerAndrzej Hajda
The patch replaces private enum clock IDs in the driver with macros provided by the DT header. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08ARM: exynos5250: create a DT header defining CLK IDsAndrzej Hajda
The patch adds header file defining clock IDs. This allows to use macros instead of magic numbers in DT bindings. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08clk: exynos4: replace clock ID private enums with IDs from DT headerAndrzej Hajda
The patch replaces private enum clock IDs in the driver with macros provided by the DT header. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08ARM: exynos4: create a DT header defining CLK IDsAndrzej Hajda
The patch adds header file defining clock IDs. This allows to use macros instead of magic numbers in DT bindings. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2014-01-08clk: exynos5250: register APLL rate tableAndrew Bresticker
Register the APLL rate table so that we can set the APLL rate from the cpufreq driver. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2013-12-31Merge branch 'clk-next-unregister' into clk-nextMike Turquette
Conflicts: drivers/clk/clk.c
2013-12-30Merge branch 'for_3.14/keystone-clk' of ↵Mike Turquette
git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone into clk-next-keystone
2013-12-30clk: exynos5250: Add CLK_SET_RATE_PARENT flag to mout_apllSachin Kamat
Add CLK_SET_RATE_PARENT flag to mout_apll clock. This will let us set the clock rate in the cpufreq driver. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos5250: Fix parents of gate clocks from MFC domainTomasz Figa
This patch adds mout_aclk333_sub mux clock and updates gate clocks from MFC domain to have it as their parent as specified in SoC documentation. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos5250: Correct parent list of audio muxesTomasz Figa
According to SoC documentation, input 5 of mout_audio muxes is connected to xxti (named fin_pll in the driver). This patch corrects defined parent arrays to match SoC documentation. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos5250: Add missing unpopulated mux parentsTomasz Figa
This patch updates mux parent arrays with unpopulated mux inputs, as all inputs need to be specified in parent arrays passed to clk_register_mux(), otherwise clk_set_parent() can generate out of bound accesses to the array. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos5250: Fix parent of gate clocks from DISP1 domainTomasz Figa
This patch adds mux_aclk_200_disp1_sub mux clock, which according to SoC documentation is the correct parent of DISP1 gate clocks. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos5250: Fix parents of gate clocks from GSCL domainTomasz Figa
This patch adds mout_aclk266_gscl_sub mux clock and adjusts definitions of GSCL domain gate clocks to use it as their parent, as specified in SoC documentation. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos5250: Make names of mux and div clocks consistentTomasz Figa
This patch renames all mux clocks to start with mout_ prefix and all div clocks to start with div_ prefix for consistency with other clocks already defined this way. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos5250: Sort definitions by registers and bitfieldTomasz Figa
This patch reorders clock definitions, so they are sorted by register addresses and bitfield shifts. When at it, blank lines are added to separate definitions of clocks from different registers. Overall this should make the driver more readable and reduce the number of potential conflicts when adding new entries. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Tested-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30Merge branch 'samsung-fixes' into samsung-next-baseTomasz Figa
2013-12-30clk: exynos: File scope reg_save array should depend on PM_SLEEPKrzysztof Kozlowski
Move reg_save[] into CONFIG_PM_SLEEP dependency block as it is used only by suspend and resume functions. This fixes the warning on CONFIG_PM_SLEEP=n: drivers/clk/samsung/clk-exynos-audss.c:29:22: warning: ‘reg_save’ defined but not used [-Wunused-variable] Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos5250: Add CLK_IGNORE_UNUSED flag for the sysreg clockAbhilash Kesavan
The sysreg (system register) generates control signals for various blocks like disp1blk, i2c, mipi, usb etc. However, it gets disabled as an unused clock at boot-up. This can lead to failures in operation of above blocks, because they can not be configured properly if this clock is disabled. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> [t.figa: Updated patch description.] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30ARM: dts: exynos5250: Fix MDMA0 clock numberAbhilash Kesavan
Due to incorrect clock specified in MDMA0 node, using MDMA0 controller could cause system failures, due to wrong clock being controlled. This patch fixes this by specifying correct clock. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> [t.figa: Corrected commit message and description.] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos5250: Add MDMA0 clocksAbhilash Kesavan
Adds gate clock for MDMA0 on Exynos5250 SoC. This is needed to ensure that the clock is enabled when MDMA0 is used on systems on which firmware gates the clockby default. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> [t.figa: Updated patch description.] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos5250: Fix ACP gate register offsetAbhilash Kesavan
The CLK_GATE_IP_ACP register offset is incorrectly listed making definition of g2d clock incorrect, which may lead to system failures when trying to use G2D on systems on which firmware gates this clock by default. Fix this and the register ordering as well. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> [t.figa: Updated patch description.] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: exynos5250: fix sysmmu_mfc{l,r} gate clocksAndrew Bresticker
The gate clocks for the MFC sysmmus appear to be flipped, i.e. GATE_IP_MFC[2] gates sysmmu_mfcl and GATE_IP_MFC[1] gates sysmmu_mfcr. Fix this so that the MFC will start up. Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2013-12-30clk: samsung: exynos4: Correct SRC_MFC registerSeung-Woo Kim
The SRC_MFC register offset was incorrect, which could cause have caused wrong calculation of rate of sclk_mfc clock, that could in turn lead to incorrect operation of MFC. This patch corrects it. Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Acked-by: Mike Turquette <mturquette@linaro.org> [t.figa: Updated patch description] Signed-off-by: Tomasz Figa <t.figa@samsung.com>
2013-12-29Merge tag 'sunxi-clk-3.14-for-mike' of ↵Mike Turquette
https://bitbucket.org/emiliolopez/linux into clk-next-sunxi Allwinner sunXi SoCs clock changes This contains the clk driver parts of the "[PATCH v3 00/13] clk: sunxi: add PLL5 and PLL6 support" series. It adds support for PLL4/5/6 and mod0 clocks on most sunxi platforms. Additionally, it contains "[PATCH 1/4] clk: sunxi: Allwinner A20 output clock support" (v2) from Chen-Yu Tsai, which adds support for output clocks present on A20.
2013-12-28clk: sunxi: Allwinner A20 output clock supportChen-Yu Tsai
This patch adds support for the external clock outputs on the Allwinner A20 SoC. The clock outputs are similar to "module 0" type clocks, with different offsets and widths for clock factors. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Emilio López <emilio@elopez.com.ar>
2013-12-28clk: sunxi: support better factor DT nodesEmilio López
The DT nodes should look like abc_clk: clk@deadbeef { ... clock-output-names = "abc"; } But our old DT nodes look like abc: abc@deadbeef { ... } So, let's support both formats, until we can transition everything to the new, correct one. Signed-off-by: Emilio López <emilio@elopez.com.ar> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-12-28clk: sunxi: mod0 supportEmilio López
This commit implements support for the "module 0" type of clocks, as used by MMC, IR, NAND, SATA and other components. Signed-off-by: Emilio López <emilio@elopez.com.ar> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-12-28clk: sunxi: add PLL5 and PLL6 supportEmilio López
This commit implements PLL5 and PLL6 support on the sunxi clock driver. These PLLs use a similar factor clock, but differ on their outputs. Signed-off-by: Emilio López <emilio@elopez.com.ar> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-12-28clk: sunxi: make factors_clk_setup return the clock it registersEmilio López
We will be needing this to register a factor clock as parent with leaf divisors on a single call. Signed-off-by: Emilio López <emilio@elopez.com.ar> Acked-by: Mike Turquette <mturquette@linaro.org>
2013-12-28clk: sunxi: add gating support to PLL1Emilio López
This commit adds gating support to PLL1 on the clock driver. This makes the PLL1 implementation fully compatible with PLL4 as well. Signed-off-by: Emilio López <emilio@elopez.com.ar> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Mike Turquette <mturquette@linaro.org>
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