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2018-07-26clk: samsung: Remove unused mout_user_aclk400_mcuisp_p4x12 variableKrzysztof Kozlowski1-2/+0
Remove unused 'mout_user_aclk400_mcuisp_p4x12' variable to fix GCC warning: drivers/clk/samsung/clk-exynos4412-isp.c:40:27: warning: 'mout_user_aclk400_mcuisp_p4x12' defined but not used [-Wunused-const-variable=] Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-06-09Merge tag 'clk-for-linus' of ↵Linus Torvalds1-4/+2
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk updates from Stephen Boyd: "This time we have a good set of changes to the core framework that do some general cleanups, but nothing too major. The majority of the diff goes to two SoCs, Actions Semi and Qualcomm. A brand new driver is introduced for Actions Semi so it takes up some lines to add all the different types, and the Qualcomm diff is there because we add support for two SoCs and it's quite a bit of data. Otherwise the big driver updates are on TI Davinci and Amlogic platforms. And then the long tail of driver updates for various fixes and stuff follows after that. Core: - debugfs cleanups removing error checking and an unused provider API - Removal of a clk init typedef that isn't used - Usage of match_string() to simplify parent string name matching - OF clk helpers moved to their own file (linux/of_clk.h) - Make clk warnings more readable across kernel versions New Drivers: - Qualcomm SDM845 GCC and Video clk controllers - Qualcomm MSM8998 GCC - Actions Semi S900 SoC support - Nuvoton npcm750 microcontroller clks - Amlogic axg AO clock controller Removed Drivers: - Deprecated Rockchip clk-gate driver Updates: - debugfs functions stopped checking return values - Support for the MSIOF module clocks on Rensas R-Car M3-N - Support for the new Rensas RZ/G1C and R-Car E3 SoCs - Qualcomm GDSC, RCG, and PLL updates for clk changes in new SoCs - Berlin and Amlogic SPDX tagging - Usage of of_clk_get_parent_count() in more places - Proper implementation of the CDEV1/2 clocks on Tegra20 - Allwinner H6 PRCM clock support and R40 EMAC support - Add critical flag to meson8b's fdiv2 as temporary fixup for ethernet - Round closest support for meson's mpll driver - Support for meson8b nand clocks and gxbb video decoder clocks - Mediatek mali clks - STM32MP1 fixes - Uniphier LD11/LD20 stream demux system clock" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (134 commits) clk: qcom: Export clk_fabia_pll_configure() clk: bcm: Update and add Stingray clock entries dt-bindings: clk: Update Stingray binding doc clk-si544: Properly round requested frequency to nearest match clk: ingenic: jz4770: Add 150us delay after enabling VPU clock clk: ingenic: jz4770: Enable power of AHB1 bus after ungating VPU clock clk: ingenic: jz4770: Modify C1CLK clock to disable CPU clock stop on idle clk: ingenic: jz4770: Change OTG from custom to standard gated clock clk: ingenic: Support specifying "wait for clock stable" delay clk: ingenic: Add support for clocks whose gate bit is inverted clk: use match_string() helper clk: bcm2835: use match_string() helper clk: Return void from debug_init op clk: remove clk_debugfs_add_file() clk: tegra: no need to check return value of debugfs_create functions clk: davinci: no need to check return value of debugfs_create functions clk: bcm2835: no need to check return value of debugfs_create functions clk: no need to check return value of debugfs_create functions clk: imx6: add EPIT clock support clk: mvebu: use correct bit for 98DX3236 NAND ...
2018-06-06treewide: Use struct_size() for devm_kmalloc() and friendsKees Cook4-9/+9
Replaces open-coded struct size calculations with struct_size() for devm_*, f2fs_*, and sock_* allocations. Automatically generated (and manually adjusted) from the following Coccinelle script: // Direct reference to struct field. @@ identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc"; expression HANDLE; expression GFP; identifier VAR, ELEMENT; expression COUNT; @@ - alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(*VAR->ELEMENT), GFP) + alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP) // mr = kzalloc(sizeof(*mr) + m * sizeof(mr->map[0]), GFP_KERNEL); @@ identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc"; expression HANDLE; expression GFP; identifier VAR, ELEMENT; expression COUNT; @@ - alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(VAR->ELEMENT[0]), GFP) + alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP) // Same pattern, but can't trivially locate the trailing element name, // or variable name. @@ identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc"; expression HANDLE; expression GFP; expression SOMETHING, COUNT, ELEMENT; @@ - alloc(HANDLE, sizeof(SOMETHING) + COUNT * sizeof(ELEMENT), GFP) + alloc(HANDLE, CHECKME_struct_size(&SOMETHING, ELEMENT, COUNT), GFP) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-06treewide: Use struct_size() for kmalloc()-familyKees Cook1-2/+1
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; void *entry[]; }; instance = kmalloc(sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = kmalloc(struct_size(instance, entry, count), GFP_KERNEL); This patch makes the changes for kmalloc()-family (and kvmalloc()-family) uses. It was done via automatic conversion with manual review for the "CHECKME" non-standard cases noted below, using the following Coccinelle script: // pkey_cache = kmalloc(sizeof *pkey_cache + tprops->pkey_tbl_len * // sizeof *pkey_cache->table, GFP_KERNEL); @@ identifier alloc =~ "kmalloc|kzalloc|kvmalloc|kvzalloc"; expression GFP; identifier VAR, ELEMENT; expression COUNT; @@ - alloc(sizeof(*VAR) + COUNT * sizeof(*VAR->ELEMENT), GFP) + alloc(struct_size(VAR, ELEMENT, COUNT), GFP) // mr = kzalloc(sizeof(*mr) + m * sizeof(mr->map[0]), GFP_KERNEL); @@ identifier alloc =~ "kmalloc|kzalloc|kvmalloc|kvzalloc"; expression GFP; identifier VAR, ELEMENT; expression COUNT; @@ - alloc(sizeof(*VAR) + COUNT * sizeof(VAR->ELEMENT[0]), GFP) + alloc(struct_size(VAR, ELEMENT, COUNT), GFP) // Same pattern, but can't trivially locate the trailing element name, // or variable name. @@ identifier alloc =~ "kmalloc|kzalloc|kvmalloc|kvzalloc"; expression GFP; expression SOMETHING, COUNT, ELEMENT; @@ - alloc(sizeof(SOMETHING) + COUNT * sizeof(ELEMENT), GFP) + alloc(CHECKME_struct_size(&SOMETHING, ELEMENT, COUNT), GFP) Signed-off-by: Kees Cook <keescook@chromium.org>
2018-05-16clk: samsung: simplify getting .drvdataWolfram Sang1-4/+2
We should get drvdata from struct device directly. Going via platform_device is an unneeded step back and forth. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-16clk: samsung: Mark a few things staticStephen Boyd3-46/+46
Running sparse on the samsung clk directory has some noise that we can fix to look for future problems easier. drivers/clk/samsung/clk-s3c2443.c:111:26: warning: symbol 's3c2443_common_muxes' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:139:26: warning: symbol 's3c2443_common_dividers' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:152:27: warning: symbol 's3c2443_common_gates' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:186:28: warning: symbol 's3c2443_common_aliases' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:241:26: warning: symbol 's3c2416_dividers' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:247:26: warning: symbol 's3c2416_muxes' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:253:27: warning: symbol 's3c2416_gates' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:263:28: warning: symbol 's3c2416_aliases' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:291:26: warning: symbol 's3c2443_dividers' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:296:27: warning: symbol 's3c2443_gates' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:305:28: warning: symbol 's3c2443_aliases' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:321:26: warning: symbol 's3c2450_dividers' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:328:26: warning: symbol 's3c2450_muxes' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:334:27: warning: symbol 's3c2450_gates' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:345:28: warning: symbol 's3c2450_aliases' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:368:33: warning: symbol 's3c2443_common_frate_clks' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2443.c:464:49: warning: Using plain integer as NULL pointer drivers/clk/samsung/clk-s3c2443.c:470:49: warning: Using plain integer as NULL pointer drivers/clk/samsung/clk-s3c2443.c:476:49: warning: Using plain integer as NULL pointer drivers/clk/samsung/clk-s3c2412.c:96:26: warning: symbol 's3c2412_dividers' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2412.c:108:35: warning: symbol 's3c2412_ffactor' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2412.c:128:26: warning: symbol 's3c2412_muxes' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2412.c:146:27: warning: symbol 's3c2412_gates' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2412.c:177:28: warning: symbol 's3c2412_aliases' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2412.c:227:33: warning: symbol 's3c2412_common_frate_clks' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2412.c:292:43: warning: Using plain integer as NULL pointer drivers/clk/samsung/clk-s3c2410.c:98:26: warning: symbol 's3c2410_common_muxes' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:114:26: warning: symbol 's3c2410_common_dividers' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:119:27: warning: symbol 's3c2410_common_gates' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:138:28: warning: symbol 's3c2410_common_aliases' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:203:26: warning: symbol 's3c2410_dividers' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:207:35: warning: symbol 's3c2410_ffactor' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:218:28: warning: symbol 's3c2410_aliases' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:272:26: warning: symbol 's3c244x_common_muxes' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:277:35: warning: symbol 's3c244x_common_ffactor' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:294:26: warning: symbol 's3c244x_common_dividers' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:302:27: warning: symbol 's3c244x_common_gates' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:306:28: warning: symbol 's3c244x_common_aliases' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:321:26: warning: symbol 's3c2440_muxes' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:325:27: warning: symbol 's3c2440_gates' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:331:35: warning: symbol 's3c2442_ffactor' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:337:26: warning: symbol 's3c2442_muxes' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:346:33: warning: symbol 's3c2410_common_frate_clks' was not declared. Should it be static? drivers/clk/samsung/clk-s3c2410.c:471:49: warning: Using plain integer as NULL pointer drivers/clk/samsung/clk-s3c2410.c:477:49: warning: Using plain integer as NULL pointer drivers/clk/samsung/clk-s3c2410.c:483:49: warning: Using plain integer as NULL pointer Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-15clk: samsung: Add fout=196608001 Hz EPLL rate entry for exynos4412Sylwester Nawrocki1-0/+1
This additional frequency is required for HDMI audio support on Odroid U3 board. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-03-14clk: samsung: exynos5250: Add missing clocks for FIMC LITE SYSMMU devicesMarek Szyprowski1-0/+6
FIMC LITE SYSMMU devices are defined in exynos5250.dtsi, but clocks for them are not instantiated by Exynos5250 clock provider driver. Add needed definitions for those clocks to fix IOMMU probe failure: ERROR: could not get clock /soc/sysmmu@13c40000:sysmmu(0) exynos-sysmmu 13c40000.sysmmu: Failed to get device clock(s)! exynos-sysmmu: probe of 13c40000.sysmmu failed with error -38 ERROR: could not get clock /soc/sysmmu@13c50000:sysmmu(0) exynos-sysmmu 13c50000.sysmmu: Failed to get device clock(s)! exynos-sysmmu: probe of 13c50000.sysmmu failed with error -38 Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Fixes: bfed1074f213 ("clk: exynos5250: Add missing sysmmu clocks for DISP and ISP blocks") Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-03-12clk: samsung: exynos5420: Add more entries to EPLL rate tableSylwester Nawrocki1-0/+3
Adding these EPLL output frequency entries allows to support all required audio sample rates on the CODEC and the HDMI interface on Peach-Pit Chromebook. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-03-12clk: samsung: exynos5420: Add CLK_SET_RATE_PARENT flag to mout_mau_epll_clkSylwester Nawrocki1-1/+2
This allows changing the EPLL output frequency through the audio subsystem clock tree leaf clocks. This change is needed to support audio on the HDMI interface on Peach-Pi(t) Chromebook. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-03-06clk: samsung: exynos5250: Move PD-dependent clocks to Exynos5 sub-CMUMarek Szyprowski3-16/+37
Clocks related to DISP1 block require special handling for power domain turn on/off sequences. Till now this was handled by Exynos power domain driver, but that approach was limited only to some special cases. This patch moves handling of those operations to clock controller driver. This gives more flexibility and allows fine tune values of some clock-specific registers. This patch moves handling of those mentioned clocks to Exynos5 sub-CMU driver instantiated from Exynos5250 driver. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-03-06clk: samsung: exynos5420: Move PD-dependent clocks to Exynos5 sub-CMUMarek Szyprowski3-26/+98
Clocks related to DISP, GSC and MFC blocks require special handling for power domain turn on/off sequences. Till now this was handled by Exynos power domain driver, but that approach was limited only to some special cases. This patch moves handling of those operations to clock controller driver. This gives more flexibility and allows fine tune values of some clock-specific registers. This patch moves handling of those mentioned clocks to Exynos5 sub-CMU driver instantiated from Exynos5420 driver. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-03-06clk: samsung: Add Exynos5 sub-CMU clock driverMarek Szyprowski2-0/+212
Exynos5250/5420/5800 have only one clock controller, but some of their clock depends on respective power domains. Handling integration of clock controller and power domain can be done using runtime PM feature of CCF framework. This however needs a separate struct device for each power domain. This patch adds such separate driver for a group of such clocks, which can be instantiated more than once, each time for a different power domain. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-02-23clk: samsung: Add compile time PLL rate validatorsAndrzej Hajda10-344/+372
Rates declared in PLL rate tables should match exactly rates calculated from PLL coefficients. To avoid possible mistakes we can use compile time validation. The patch introduces such validators and expands all initializers with additional input frequency parameter, required to validate rates. Since S3C24xx PLLs requires different validators two new macros have been introduced to deal with it. Also, since PLLs 4502 and 4508 have different formulas PLL_45XX_RATE has been replaced with PLL_4508_RATE. As the patch adds only compile time validators it should not have impact on compiled code. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Tomasz Figa <tomasz.figa@gmail.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-02-23clk: samsung: s3c2410: Fix PLL ratesAndrzej Hajda1-8/+8
Rates declared in PLL rate tables should match exactly rates calculated from the PLL coefficients. If that is not the case, rate of the PLL's child clock might be set not as expected. For instance, if in the PLL rates table we have a 393216000 Hz entry and the real value as returned by the PLL's recalc_rate callback is 393216003, after setting PLL's clk rate to 393216000 clk_get_rate will return 393216003. If we now attempt to set rate of a PLL's child divider clock to 393216000/2 its rate will be 131072001, rather than 196608000. That is, the divider will be set to 3 instead of 2, because 393216003/2 is greater than 196608000. To fix this issue declared rates are changed to exactly match rates generated by the PLL, as calculated from the P, M, S, K coefficients. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Tomasz Figa <tomasz.figa@gmail.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-02-23clk: samsung: exynos7: Fix PLL ratesAndrzej Hajda1-1/+1
Rates declared in PLL rate tables should match exactly rates calculated from the PLL coefficients. If that is not the case, rate of the PLL's child clock might be set not as expected. For instance, if in the PLL rates table we have a 393216000 Hz entry and the real value as returned by the PLL's recalc_rate callback is 393216003, after setting PLL's clk rate to 393216000 clk_get_rate will return 393216003. If we now attempt to set rate of a PLL's child divider clock to 393216000/2 its rate will be 131072001, rather than 196608000. That is, the divider will be set to 3 instead of 2, because 393216003/2 is greater than 196608000. To fix this issue declared rates are changed to exactly match rates generated by the PLL, as calculated from the P, M, S, K coefficients. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Tomasz Figa <tomasz.figa@gmail.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-02-23clk: samsung: exynos5433: Fix PLL ratesAndrzej Hajda1-6/+6
Rates declared in PLL rate tables should match exactly rates calculated from the PLL coefficients. If that is not the case, rate of the PLL's child clock might be set not as expected. For instance, if in the PLL rates table we have a 393216000 Hz entry and the real value as returned by the PLL's recalc_rate callback is 393216003, after setting PLL's clk rate to 393216000 clk_get_rate will return 393216003. If we now attempt to set rate of a PLL's child divider clock to 393216000/2 its rate will be 131072001, rather than 196608000. That is, the divider will be set to 3 instead of 2, because 393216003/2 is greater than 196608000. To fix this issue declared rates are changed to exactly match rates generated by the PLL, as calculated from the P, M, S, K coefficients. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Tomasz Figa <tomasz.figa@gmail.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-02-23clk: samsung: exynos5260: Fix PLL ratesAndrzej Hajda1-1/+1
Rates declared in PLL rate tables should match exactly rates calculated from the PLL coefficients. If that is not the case, rate of the PLL's child clock might be set not as expected. For instance, if in the PLL rates table we have a 393216000 Hz entry and the real value as returned by the PLL's recalc_rate callback is 393216003, after setting PLL's clk rate to 393216000 clk_get_rate will return 393216003. If we now attempt to set rate of a PLL's child divider clock to 393216000/2 its rate will be 131072001, rather than 196608000. That is, the divider will be set to 3 instead of 2, because 393216003/2 is greater than 196608000. To fix this issue declared rates are changed to exactly match rates generated by the PLL, as calculated from the P, M, S, K coefficients. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Tomasz Figa <tomasz.figa@gmail.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-02-23clk: samsung: exynos5250: Fix PLL ratesAndrzej Hajda1-4/+4
Rates declared in PLL rate tables should match exactly rates calculated from PLL coefficients. If that is not the case, rate of the PLL's child clock might be set not as expected. For instance, if in the PLL rates table we have a 393216000 Hz entry and the real value as returned by the PLL's recalc_rate callback is 393216003, after setting PLL's clk rate to 393216000 clk_get_rate will return 393216003. If we now attempt to set rate of a PLL's child divider clock to 393216000/2 its rate will be 131072001, rather than 196608000. That is, the divider will be set to 3 instead of 2, because 393216003/2 is greater than 196608000. To fix this issue declared rates are changed to exactly match rates generated by the PLL, as calculated from the P, M, S, K coefficients. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-02-23clk: samsung: exynos3250: Fix PLL ratesAndrzej Hajda1-2/+2
Rates declared in PLL rate tables should match exactly rates calculated from PLL coefficients. If that is not the case, rate of the PLL's child clock might be set not as expected. For instance, if in the PLL rates table we have a 393216000 Hz entry and the real value as returned by the PLL's recalc_rate callback is 393216003, after setting PLL's clk rate to 393216000 clk_get_rate will return 393216003. If we now attempt to set rate of a PLL's child divider clock to 393216000/2 its rate will be 131072001, rather than 196608000. That is, the divider will be set to 3 instead of 2, because 393216003/2 is greater than 196608000. To fix this issue declared rates are changed to exactly match rates generated by the PLL, as calculated from the P, M, S, K coefficients. In this patch an erroneous P value for 74176002 output frequency is also corrected. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-02-14clk: exynos5433: Extend list of available AUD_PLL output frequenciesSylwester Nawrocki1-0/+1
Add one more entry to the exynos5433_aud_pll_rates table, this allows to support audio sample rates: 48000, 96000, 192000 Hz with minimum error. The M, P, S, K values re confirmed by the HW team. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
2018-02-14clk: exynos5433: Add CLK_IGNORE_UNUSED flag to sclk_ioclk_i2s1_bclkSylwester Nawrocki1-1/+1
The sclk_ioclk_i2s1_bclk clock is not currently handled by any driver and disabling this clock by the clk core prevents proper operation of the I2S1 block. CLK_IGNORE_UNUSED flag is added as a temporary fix. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
2018-02-14clk: samsung: Remove redundant dev_err call in exynos_audss_clk_probe()Wei Yongjun1-3/+1
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-02-14clk: samsung: Remove redundant dev_err call in exynos5433_cmu_probe()Wei Yongjun1-3/+1
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2018-02-14clk: samsung: s3c: Remove unneeded enumerationChanwoo Choi3-33/+12
This patch just removes the unneeded enumeration for PLL index. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-11-18Merge tag 'clk-for-linus' of ↵Linus Torvalds14-317/+650
git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux Pull clk updates from Stephen Boyd: "We have two changes to the core framework this time around. The first being a large change that introduces runtime PM support to the clk framework. Now we properly call runtime PM operations on the device providing a clk when the clk is in use. This helps on SoCs where the clks provided by a device need something to be powered on before using the clks, like power domains or regulators. It also helps power those things down when clks aren't in use. The other core change is a devm API addition for clk providers so we can get rid of a bunch of clk driver remove functions that are just doing of_clk_del_provider(). Outside of the core, we have the usual addition of clk drivers and smattering of non-critical fixes to existing drivers. The biggest diff is support for Mediatek MT2712 and MT7622 SoCs, but those patches really just add a bunch of data. By the way, we're trying something new here where we build the tree up with topic branches. We plan to work this into our workflow so that we don't step on each other's toes, and so the fixes branch can be merged on an as-needed basis. Summary: Core: - runtime PM support for clk providers - devm API for of_clk_add_hw_provider() New Drivers: - Mediatek MT2712 and MT7622 - Renesas R-Car V3M SoC Updates: - runtime PM support for Samsung exynos5433/exynos4412 providers - removal of clkdev aliases on Samsung SoCs - convert clk-gpio to use gpio descriptors - various driver cleanups to match kernel coding style - Amlogic Video Processing Unit VPU and VAPB clks - sigma-delta modulation for Allwinner audio PLLs - Allwinner A83t Display clks - support for the second display unit clock on Renesas RZ/G1E - suspend/resume support for Renesas R-Car Gen3 CPG/MSSR - new clock ids for Rockchip rk3188 and rk3368 SoCs - various 'const' markings on clk_ops structures - RPM clk support on Qualcomm MSM8996/MSM8660 SoCs" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (137 commits) clk: stm32h7: fix test of clock config clk: pxa: fix building on older compilers clk: sunxi-ng: a83t: Fix i2c buses bits clk: ti: dra7-atl-clock: fix child-node lookups clk: qcom: common: fix legacy board-clock registration clk: uniphier: fix DAPLL2 clock rate of Pro5 clk: uniphier: fix parent of miodmac clock data clk: hi3798cv200: correct parent mux clock for 'clk_sdio0_ciu' clk: hisilicon: Delete an error message for a failed memory allocation in hisi_register_clkgate_sep() clk: hi3660: fix incorrect uart3 clock freqency clk: kona-setup: Delete error messages for failed memory allocations ARC: clk: fix spelling mistake: "configurarion" -> "configuration" clk: cdce925: remove redundant check for non-null parent_name clk: versatile: Improve sizeof() usage clk: versatile: Delete error messages for failed memory allocations clk: ux500: Improve sizeof() usage clk: ux500: Delete error messages for failed memory allocations clk: spear: Delete error messages for failed memory allocations clk: ti: Delete error messages for failed memory allocations clk: mmp: Adjust checks for NULL pointers ...
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman1-0/+1
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-31Merge tag 'clk-v4.15-exynos-pm' of ↵Stephen Boyd4-9/+206
git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk into clk-next Pull Samsung clk driver updates from Sylwester Nawrocki: - An addition of separate driver for the Exynos 4412 ISP CMU, needed to model and properly handle the clock controller's dependencies on the ISP power domain. - Adding __maybe_unused attributes to the exynos5433_cmu_{suspend, resume} ops to suppress compiler warnings with CONFIG_PM disabled. * tag 'clk-v4.15-exynos-pm' of git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk: clk: samsung: Add a separate driver for Exynos4412 ISP clocks clk: samsung: Add dt bindings for Exynos4412 ISP clock controller clk: samsung: Instantiate Exynos4412 ISP clocks only when available clk: samsung: exynos5433: mark PM functions as __maybe_unused
2017-10-25Merge tag 'clk-v4.15-samsung' of ↵Stephen Boyd10-190/+62
git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk into clk-next Pull Samsung clk driver updates from Sylwester Nawrocki: Overall clk/samsung clean up and fixes. Removed remaining unused code after removal of exynos4212 SoC support; dropped internal data structure fields and related code for registering clkdev lookup entry for each possible clock object, clkdev aliases could still be defined if needed in a separate table; other minor fixes of the clock tree definitions. * tag 'clk-v4.15-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk: clk: samsung: Remove obsolete clkdev alias support clk: samsung: Add explicit MPLL, EPLL clkdev aliases in S3C2443 driver clk: samsung: Rework clkdev alias handling in S3C2443 driver clk: samsung: Rework clkdev alias handling in Exynos5440 driver clk: samsung: Drop useless alias in Exynos5420 clk driver clk: samsung: Remove clkdev alias support in Exynos5250 clk driver clk: samsung: Remove double assignment of CLK_ARM_CLK in Exynos4 driver clk: samsung: Remove clkdev alias support in Exynos4 clk driver clk: samsung: Remove support for obsolete Exynos4212 CPU clock clk: samsung: Remove support for Exynos4212 SoCs in Exynos CLKOUT driver clk: samsung: Properly propagate flags in __PLL macro clk: samsung: Fix m2m scaler clock on Exynos542x clk: samsung: Delete a memory allocation error message in clk-cpu.c
2017-10-16clk: samsung: Add a separate driver for Exynos4412 ISP clocksMarek Szyprowski2-0/+180
Some registers for the Exynos 4412 ISP (Camera subsystem) clocks are located in the ISP power domain. Because those registers are also located in a different memory region than the main clock controller, support for them can be provided by a separate clock controller. This in turn allows to almost seamlessly make it aware of the power domain using recently introduced runtime PM support for clocks. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-16clk: samsung: Instantiate Exynos4412 ISP clocks only when availableMarek Szyprowski1-7/+24
Some registers for the Exynos 4412 ISP (Camera subsystem) clocks are located in the ISP power domain. Instantiate those clocks only when provided clock registers resource covers those registers. This is a preparation for adding a separate clock driver for ISP clocks, which will be integrated with power domain using runtime PM feature. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-11clk: samsung: exynos5433: mark PM functions as __maybe_unusedArnd Bergmann1-2/+2
The suspend/resume functions are referenced conditionally, causing a harmless warning when CONFIG_PM is disabled: drivers/clk/samsung/clk-exynos5433.c:5476:12: error: 'exynos5433_cmu_resume' defined but not used [-Werror=unused-function] drivers/clk/samsung/clk-exynos5433.c:5453:12: error: 'exynos5433_cmu_suspend' defined but not used [-Werror=unused-function] This marks both as __maybe_unused to shut up the warning. Fixes: 523d3de41f02 ("clk: samsung: exynos5433: Add support for runtime PM") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-09clk: samsung: Remove obsolete clkdev alias supportMarek Szyprowski3-98/+15
Remove support for obsolete clkdev alias definition in generic helper macros for MUX, DIV, GATE and PLL clocks. clkdev aliases can be still created using samsung_clk_register_alias() function if given platform still needs them. All current drivers have been converted not to use *_A-style macros and checked if there are any clients for the PLL clocks, which had aliases created unconditionally. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-09clk: samsung: Add explicit MPLL, EPLL clkdev aliases in S3C2443 driverMarek Szyprowski1-4/+6
S3C2443 platform still use non-dt based lookup in some of its drivers to get MPLL and EPLL clocks. Till now it worked only because PLL() macro implicitly created aliases for all instantiated clocks. This feature will be removed, so explicitly create aliases for MPLL and EPLL clocks. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-09clk: samsung: Rework clkdev alias handling in S3C2443 driverMarek Szyprowski1-2/+4
S3C2443 SoC still uses old, non-dt CPUfreq driver, which requires clkdev aliases to get access to proper clocks. Create those aliases using samsung_clk_register_alias() function instead of using *_A clock macros, which will be removed soon. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-09clk: samsung: Rework clkdev alias handling in Exynos5440 driverMarek Szyprowski1-2/+10
Exynos5440 still uses old, non-dt CPUfreq driver, which requires clkdev aliases to get access to proper clocks. Create those aliases using samsung_clk_register_alias() function instead of using *_A clock macros, which will be removed soon. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-09clk: samsung: Drop useless alias in Exynos5420 clk driverMarek Szyprowski1-2/+1
Drop clkdev alias for "mout_aclk400_mscl" clock. It was not used at all and it was probably committed by accident. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-09clk: samsung: Remove clkdev alias support in Exynos5250 clk driverMarek Szyprowski1-9/+9
All Exynos5250 boards have been fully converted to device-tree and use generic dt-based CPUfreq driver, so there is no need to create any clkdev aliases for the clocks. Drop all the code related to aliases handling. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-09clk: samsung: Remove double assignment of CLK_ARM_CLK in Exynos4 driverMarek Szyprowski1-1/+1
CLK_ARM_CLK ("armclk") clock is provided by cpu-clk subdriver, which is instantiated after creating all divider clocks from exynos4_div_clks array. There is no point assigning this id to "div_core2" clock and later overwrite with proper "armcpu" clock by cpu-clk subdriver. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-09clk: samsung: Remove clkdev alias support in Exynos4 clk driverMarek Szyprowski1-37/+10
All Exynos4 boards have been fully converted to device-tree and use generic dt-based CPUfreq driver, so there is no need to create any clkdev aliases for the clocks. Drop all the code related to aliases handling. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-09clk: samsung: Remove support for obsolete Exynos4212 CPU clockMarek Szyprowski1-29/+4
Support for Exynos 4212 SoC has been removed by commit bca9085e0ae9 ("ARM: dts: exynos: remove Exynos4212 support (dead code)"), so there is no need to keep dead code. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-09clk: samsung: Remove support for Exynos4212 SoCs in Exynos CLKOUT driverMarek Szyprowski1-2/+0
Support for Exynos4212 SoCs has been removed by commit bca9085e0ae9 ("ARM: dts: exynos: remove Exynos4212 support (dead code)"), so there is no need to keep remaining dead code related to this SoC version. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-10-06Merge branch 'clk-fixes' into clk-nextStephen Boyd1-0/+15
* clk-fixes: clk: samsung: exynos4: Enable VPLL and EPLL clocks for suspend/resume cycle
2017-10-04clk: samsung: exynos4: Enable VPLL and EPLL clocks for suspend/resume cycleMarek Szyprowski1-0/+15
Commit 6edfa11cb396 ("clk: samsung: Add enable/disable operation for PLL36XX clocks") added enable/disable operations to PLL clocks. Prior that VPLL and EPPL clocks were always enabled because the enable bit was never touched. Those clocks have to be enabled during suspend/resume cycle, because otherwise board fails to enter sleep mode. This patch enables them unconditionally before entering system suspend state. System restore function will set them to the previous state saved in the register cache done before that unconditional enable. Fixes: 6edfa11cb396 ("clk: samsung: Add enable/disable operation for PLL36XX clocks") CC: stable@vger.kernel.org # v4.13 Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-10-03clk: samsung: Properly propagate flags in __PLL macroMarek Szyprowski1-1/+1
All users of __PLL macro already provide flags parameter, so don't overwrite it unconditionally with CLK_GET_RATE_NOCACHE. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-09-30Merge branch 'clk-pm-runtime' into clk-nextStephen Boyd5-121/+385
* clk-pm-runtime: clk: samsung: exynos-audss: Add support for runtime PM clk: samsung: exynos-audss: Use local variable for controller's device clk: samsung: exynos5433: Add support for runtime PM clk: samsung: Add support for runtime PM clk: Add support for runtime PM
2017-09-29clk: samsung: Fix m2m scaler clock on Exynos542xAndrzej Pietrasiewicz1-1/+1
The TOP "aclk400_mscl" clock should be kept enabled all the time to allow proper access to power management control for MSC power domain and devices that are a part of it. This change is required for the scaler to work properly after domain power on/off sequence. Fixes: 318fa46cc60d ("clk/samsung: exynos542x: mark some clocks as critical") Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-09-27clk: samsung: Delete a memory allocation error message in clk-cpu.cMarkus Elfring1-2/+0
Omit an extra message for a memory allocation failure in exynos_register_cpu_clock() function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2017-09-08clk: samsung: exynos-audss: Add support for runtime PMMarek Szyprowski1-17/+34
This patch adds support for runtime PM to Exynos Audio SubSystem driver to enable full support for audio power domain on Exynos5 SoCs. The main change is moving register saving and restoring code from system sleep PM ops to runtime PM ops and implementing system sleep PM ops with generic pm_runtime_force_suspend/resume helpers. Runtime PM of the Exynos AudSS device is managed from clock core depending on the preparation status of the provided clocks. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1503302703-13801-6-git-send-email-m.szyprowski@samsung.com
2017-09-08clk: samsung: exynos-audss: Use local variable for controller's deviceMarek Szyprowski1-12/+13
Store pointer to the controller's device in local variable to avoid extracting it from platform device in each call. This will also simplify code in the future, when runtime PM support is added. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1503302703-13801-5-git-send-email-m.szyprowski@samsung.com
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-25 19:07:47 +0300