Hi Will, As you know, I have moved all the GTDT code to ACPI driver , and simplify the GTDT relevant code in arm_arch_timer.c. That will be in my next patchset. but you can check here : https://git.linaro.org/people/fu.wei/linux.git/shortlog/refs/heads/acpi-topic-sbsa-watchdog_upstream_v4_devel Great thanks for your suggestion! On 27 May 2015 at 18:44, Will Deacon <will.deacon@xxxxxxx> wrote: > On Tue, May 26, 2015 at 05:27:33PM +0100, Fu Wei wrote: >> On 26 May 2015 at 23:36, Guenter Roeck <linux@xxxxxxxxxxxx> wrote: >> > On Tue, May 26, 2015 at 04:18:42PM +0100, Will Deacon wrote: >> >> Sure, the device it describes may only ever exist on ARM systems, but by >> >> that logic then we should be moving lots of drivers back under arch/arm[64]. >> >> >> > It is nt the driver, but its instantiation. The question here would be >> > how and where to instantiate the driver, not where the driver itself >> > is located. The driver itself is ACPI agnostic. >> >> I really don't mind to refactor the code, If we can make this patch better. >> >> But for now, I can't see the good reason to move ACPI-relevant code >> into a watchdog driver. > > I don't really mind where you move it, just as long as it's outside of > arch/arm64. > >> The reasons I put the code here are >> (1)SBSA watchdog only for ARM64 >> (2)GTDT only for ARM, design for ARM, >> (3)For ARM Architecture, only ARM64 support ACPI. >> >> For minimizing arch/arm64/kernel/acpi.c, we can't put the code here, >> and we had better keep these code outside the driver, >> >> So do you have any suggestion for the better location of the GTDT code? > > I don't understand why you can't do the same as > drivers/clocksource/arm_arch_timer.c and parse the table directly in the > driver. If there are objections from the driver/subsystem maintainers then > it sounds like we need a mechanical ACPI table -> platform device > conversion in the core, like we have for device-tree. > > Will -- Best regards, Fu Wei Software Engineer Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch Ph: +86 21 61221326(direct) Ph: +86 186 2020 4684 (mobile) Room 1512, Regus One Corporate Avenue,Level 15, One Corporate Avenue,222 Hubin Road,Huangpu District, Shanghai,China 200021 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
