| Message ID | 1478264794-14652-5-git-send-email-dingtianhong@huawei.com |
|---|---|
| State | Superseded |
| Headers | show |
OK, will wait more feedback and fix them together in the next version. Thanks. Ding On 2016/11/14 16:12, Hanjun Guo wrote: > On 2016/11/4 21:06, Ding Tianhong wrote: >> From: Hanjun Guo <hanjun.guo@linaro.org> >> >> Introduce a general quirk framework for each timer erratum in ACPI, >> which use the oem information in GTDT table for platform specific erratums. >> The struct gtdt_arch_timer_fixup is introduced to record the oem >> information to match the quirk and handle the erratum. >> >> v3: Introduce a generic aquick framework for erratum in ACPI mode. >> >> Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> >> Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> >> --- >> drivers/clocksource/arm_arch_timer.c | 37 ++++++++++++++++++++++++++++++++++++ >> 1 file changed, 37 insertions(+) >> >> diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c >> index 3d59af1..9bc93e5 100644 >> --- a/drivers/clocksource/arm_arch_timer.c >> +++ b/drivers/clocksource/arm_arch_timer.c >> @@ -1068,6 +1068,40 @@ CLOCKSOURCE_OF_DECLARE(armv7_arch_timer_mem, "arm,armv7-timer-mem", >> arch_timer_mem_init); >> >> #ifdef CONFIG_ACPI >> +struct gtdt_arch_timer_fixup { >> + char oem_id[ACPI_OEM_ID_SIZE]; >> + char oem_table_id[ACPI_OEM_TABLE_ID_SIZE]; >> + u32 oem_revision; >> + >> + /* quirk handler for arch timer erratum */ >> + void (*handler)(u32 erratum); >> + u32 erratum; > > Hmm, I think we just use > > void *context; > > and we convert it in the platform specific handler, then this struct > can be reused for other type of quirks. > >> +}; >> + >> +/* note: this needs to be updated according to the doc of OEM ID >> + * and TABLE ID for different board. >> + */ >> +struct gtdt_arch_timer_fixup arch_timer_quirks[] __initdata = { >> +}; >> + >> +void __init arch_timer_acpi_quirks_handler(char *oem_id, >> + char *oem_table_id, >> + u32 oem_revision) >> +{ >> + struct gtdt_arch_timer_fixup *quirks = arch_timer_quirks; >> + int i; >> + >> + for (i = 0; i < ARRAY_SIZE(arch_timer_quirks); i++, quirks++) { >> + if (!memcmp(quirks->oem_id, oem_id, ACPI_OEM_ID_SIZE) && >> + !memcmp(quirks->oem_table_id, oem_table_id, ACPI_OEM_TABLE_ID_SIZE) && >> + quirks->oem_revision == oem_revision) { >> + if (quirks->handler && quirks->erratum) >> + quirks->handler(quirks->erratum); >> + break; > > we can't just break because we have multi quirks for different handlers. > > Thanks > Hanjun > > > . > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index 3d59af1..9bc93e5 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -1068,6 +1068,40 @@ CLOCKSOURCE_OF_DECLARE(armv7_arch_timer_mem, "arm,armv7-timer-mem", arch_timer_mem_init); #ifdef CONFIG_ACPI +struct gtdt_arch_timer_fixup { + char oem_id[ACPI_OEM_ID_SIZE]; + char oem_table_id[ACPI_OEM_TABLE_ID_SIZE]; + u32 oem_revision; + + /* quirk handler for arch timer erratum */ + void (*handler)(u32 erratum); + u32 erratum; +}; + +/* note: this needs to be updated according to the doc of OEM ID + * and TABLE ID for different board. + */ +struct gtdt_arch_timer_fixup arch_timer_quirks[] __initdata = { +}; + +void __init arch_timer_acpi_quirks_handler(char *oem_id, + char *oem_table_id, + u32 oem_revision) +{ + struct gtdt_arch_timer_fixup *quirks = arch_timer_quirks; + int i; + + for (i = 0; i < ARRAY_SIZE(arch_timer_quirks); i++, quirks++) { + if (!memcmp(quirks->oem_id, oem_id, ACPI_OEM_ID_SIZE) && + !memcmp(quirks->oem_table_id, oem_table_id, ACPI_OEM_TABLE_ID_SIZE) && + quirks->oem_revision == oem_revision) { + if (quirks->handler && quirks->erratum) + quirks->handler(quirks->erratum); + break; + } + } +} + static int __init map_generic_timer_interrupt(u32 interrupt, u32 flags) { int trigger, polarity; @@ -1094,6 +1128,9 @@ static int __init arch_timer_acpi_init(struct acpi_table_header *table) return -EINVAL; } + arch_timer_acpi_quirks_handler(table->oem_id, table->oem_table_id, + table->oem_revision); + gtdt = container_of(table, struct acpi_table_gtdt, header); arch_timers_present |= ARCH_CP15_TIMER;