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From Tomasz Figa <t.figa@samsung.com>: Current Samsung PM code is heavily unprepared for multiplatform systems. The design implies accessing functions and global variables defined in particular mach- subdirectory from common code in plat-, which is not allowed when building ARCH_MULTIPLATFORM. In addition there is a lot of forced code unification, which makes common function handle any possible quirks of all supported SoCs. In the end this design turned out to not work too well, ending with a lot of empty functions exported from mach-, just because code in common pm.c calls them. Moreover, recent trend of moving lower level suspend/resume code to proper drivers, like pinctrl or clk, made a lot of code there redundant, especially on DT-only platforms like Exynos. Note that this branch is based on previous tags/samsung-pm-1 and merge tags/samsung-cleanup-2 because of fix build error from recent changes of <linux/serial_s3c.h> -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJTK2j/AAoJEA0Cl+kVi2xqsMEP/0ziBUK0zV40zlQsfoMd+qFO q/96p/Aw1hxFef8JLsYWmvd2b+2MXpFCPkSw9ga2zhLyyk04CjM6YoLJYZY+h1W7 /NeLQvIMAvzhizO0mw861BKxsSHC2g2EdWPi/2sIe1+39CzbG5bU9BuC6fY9Y75G mlIPtYWBYz1aey1m8xYv3uNYEyunKCtthISpwIrBXbQrANsWZ59W7CAjL+juQh+J NJkAdM7t/S5oRdTyrtd0i90ewr5KsDIFnD1Z59YCboCzoFB1tKW10iFgLBs6aUtB pE7xc5IQu0/F/xxyTzi0uooGSPChxM5g8gLLEFZeN3Qnw06s7dm2HAnrPFZ2WyAQ xLhD++sP3ZhoomRh8ZljMfMhsLd51BaqK3u9oh4kvmVEGzJtytbftXezMIVF12DR Epe4i5vbGm9fhjHjBDpuybsICLDRp6tlICRURDrvbfoCRazQuZC4xZR3IJZ9vHHW 40EU09MBF/P+OoRkXnaYAwpD2F5AG0/QdsyXH9RJkoIZHE9fbjmDviqLiJRC2OH/ LpnEYThZ057mQYiUdcBjqzWFuV4UC8K5fZdlIRBUsRWGyLxBretj1gpMFGvS0ca/ abGZ2E/+s5uDlYAOfYvbwgMSc10lzo2YFkGMS+JpBgemkme8skVZ67SQkzuODqKz TqYfstyw6LreW84Ws4gZ =jtBA -----END PGP SIGNATURE----- Merge tag 'samsung-pm-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/cleanup3 Merge "Samsung PM related 2nd updates for v3.15" from Kukjin Kim: From Tomasz Figa <t.figa@samsung.com>: Current Samsung PM code is heavily unprepared for multiplatform systems. The design implies accessing functions and global variables defined in particular mach- subdirectory from common code in plat-, which is not allowed when building ARCH_MULTIPLATFORM. In addition there is a lot of forced code unification, which makes common function handle any possible quirks of all supported SoCs. In the end this design turned out to not work too well, ending with a lot of empty functions exported from mach-, just because code in common pm.c calls them. Moreover, recent trend of moving lower level suspend/resume code to proper drivers, like pinctrl or clk, made a lot of code there redundant, especially on DT-only platforms like Exynos. Note that this branch is based on previous tags/samsung-pm-1 and merge tags/samsung-cleanup-2 because of fix build error from recent changes of <linux/serial_s3c.h> * tag 'samsung-pm-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung: ARM: EXYNOS: Fix compilation error in cpuidle.c ARM: S5P64X0: Explicitly include linux/serial_s3c.h in mach/pm-core.h ARM: S3C64XX: Fix build for implicit serial_s3c.h inclusion serial: s3c: Fix build of header without serial_core.h preinclusion ARM: EXYNOS: Allow wake-up using GIC interrupts ARM: EXYNOS: Stop using legacy Samsung PM code ARM: EXYNOS: Remove PM initcalls and useless indirection ARM: EXYNOS: Fix abuse of CONFIG_PM ARM: SAMSUNG: Move s3c_pm_check_* prototypes to plat/pm-common.h ARM: SAMSUNG: Move common save/restore helpers to separate file ARM: SAMSUNG: Move Samsung PM debug code into separate file ARM: SAMSUNG: Consolidate PM debug functions ARM: SAMSUNG: Use debug_ll_addr() to get UART base address ARM: SAMSUNG: Save UART DIVSLOT register based on SoC type ARM: SAMSUNG: Add soc_is_s3c2410() helper ARM: EXYNOS: Do not resume l2x0 if not enabled before suspend Signed-off-by: Arnd Bergmann <arnd@arndb.de> |
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