From: fu.wei@linaro.org
To: rjw@rjwysocki.net, lenb@kernel.org, daniel.lezcano@linaro.org,
tglx@linutronix.de, marc.zyngier@arm.com, mark.rutland@arm.com,
lorenzo.pieralisi@arm.com, sudeep.holla@arm.com,
hanjun.guo@linaro.org
Cc: linux-arm-kernel@lists.infradead.org,
linaro-acpi@lists.linaro.org, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org, rruigrok@codeaurora.org,
harba@codeaurora.org, cov@codeaurora.org, timur@codeaurora.org,
graeme.gregory@linaro.org, al.stone@linaro.org, jcm@redhat.com,
wei@redhat.com, arnd@arndb.de, catalin.marinas@arm.com,
will.deacon@arm.com, Suravee.Suthikulpanit@amd.com,
leo.duran@amd.com, wim@iguana.be, linux@roeck-us.net,
linux-watchdog@vger.kernel.org, tn@semihalf.com,
christoffer.dall@linaro.org, julien.grall@arm.com,
Fu Wei <fu.wei@linaro.org>
Subject: [PATCH v18 08/15] clocksource/drivers/arm_arch_timer: move arch_timer_needs_of_probing into DT init call
Date: Fri, 9 Dec 2016 01:33:12 +0800 [thread overview]
Message-ID: <20161208173319.6618-9-fu.wei@linaro.org> (raw)
In-Reply-To: <20161208173319.6618-1-fu.wei@linaro.org>
From: Fu Wei <fu.wei@linaro.org>
Because arch_timer_needs_of_probing is only for booting with device-tree,
but arch_timer_common_init is a generic init call which shouldn't include
the FW-specific code. It's better to put arch_timer_needs_of_probing into
DT init function.
But for per-cpu timer, the arch_timer_common_init is called from
arch_timer_init. For reaching the goal above, this patch disassemble
arch_timer_init and use arch_timer_register and arch_timer_common_init
directly, just like arch_timer_mem init code is doing.
By this way, all the DT relevant code are only called from DT init call.
Signed-off-by: Fu Wei <fu.wei@linaro.org>
---
drivers/clocksource/arm_arch_timer.c | 46 ++++++++++++++++--------------------
1 file changed, 21 insertions(+), 25 deletions(-)
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 2c9085a..8c813da 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -821,9 +821,6 @@ static bool __init arch_timer_needs_of_probing(void)
static int __init arch_timer_common_init(void)
{
- if (acpi_disabled && arch_timer_needs_of_probing())
- return 0;
-
arch_timer_banner(arch_timers_present);
arch_counter_register(arch_timers_present);
return arch_timer_arch_init();
@@ -861,26 +858,9 @@ static enum arch_timer_ppi_nr __init arch_timer_select_ppi(void)
return ARCH_TIMER_PHYS_SECURE_PPI;
}
-static int __init arch_timer_init(void)
-{
- int ret;
-
- ret = arch_timer_register();
- if (ret)
- return ret;
-
- ret = arch_timer_common_init();
- if (ret)
- return ret;
-
- arch_timer_kvm_info.virtual_irq = arch_timer_ppi[ARCH_TIMER_VIRT_PPI];
-
- return 0;
-}
-
static int __init arch_timer_of_init(struct device_node *np)
{
- int i;
+ int i, ret;
if (arch_timers_present & ARCH_TIMER_TYPE_CP15) {
pr_warn("multiple nodes in dt, skipping\n");
@@ -891,6 +871,8 @@ static int __init arch_timer_of_init(struct device_node *np)
for (i = ARCH_TIMER_PHYS_SECURE_PPI; i < ARCH_TIMER_MAX_TIMER_PPI; i++)
arch_timer_ppi[i] = irq_of_parse_and_map(np, i);
+ arch_timer_kvm_info.virtual_irq = arch_timer_ppi[ARCH_TIMER_VIRT_PPI];
+
if (!arch_timer_rate &&
of_property_read_u32(np, "clock-frequency", &arch_timer_rate))
arch_timer_detect_rate();
@@ -921,7 +903,14 @@ static int __init arch_timer_of_init(struct device_node *np)
return -EINVAL;
}
- return arch_timer_init();
+ ret = arch_timer_register();
+ if (ret)
+ return ret;
+
+ if (arch_timer_needs_of_probing())
+ return 0;
+
+ return arch_timer_common_init();
}
CLOCKSOURCE_OF_DECLARE(armv7_arch_timer, "arm,armv7-timer", arch_timer_of_init);
CLOCKSOURCE_OF_DECLARE(armv8_arch_timer, "arm,armv8-timer", arch_timer_of_init);
@@ -1008,7 +997,8 @@ static int __init arch_timer_mem_init(struct device_node *np)
if (ret)
goto out;
- return arch_timer_common_init();
+ if (!arch_timer_needs_of_probing())
+ ret = arch_timer_common_init();
out:
iounmap(cntctlbase);
of_node_put(best_frame);
@@ -1037,6 +1027,7 @@ static int __init map_generic_timer_interrupt(u32 interrupt, u32 flags)
/* Initialize per-processor generic timer */
static int __init arch_timer_acpi_init(struct acpi_table_header *table)
{
+ int ret;
struct acpi_table_gtdt *gtdt;
if (arch_timers_present & ARCH_TIMER_TYPE_CP15) {
@@ -1064,6 +1055,8 @@ static int __init arch_timer_acpi_init(struct acpi_table_header *table)
map_generic_timer_interrupt(gtdt->non_secure_el2_interrupt,
gtdt->non_secure_el2_flags);
+ arch_timer_kvm_info.virtual_irq = arch_timer_ppi[ARCH_TIMER_VIRT_PPI];
+
/* Get the frequency from CNTFRQ */
arch_timer_detect_rate();
@@ -1076,8 +1069,11 @@ static int __init arch_timer_acpi_init(struct acpi_table_header *table)
/* Always-on capability */
arch_timer_c3stop = !(gtdt->non_secure_el1_flags & ACPI_GTDT_ALWAYS_ON);
- arch_timer_init();
- return 0;
+ ret = arch_timer_register();
+ if (ret)
+ return ret;
+
+ return arch_timer_common_init();
}
CLOCKSOURCE_ACPI_DECLARE(arch_timer, ACPI_SIG_GTDT, arch_timer_acpi_init);
#endif
--
2.9.3
next prev parent reply other threads:[~2016-12-08 17:35 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-08 17:33 [PATCH v18 00/15] acpi, clocksource: add GTDT driver and GTDT support in arm_arch_timer fu.wei
2016-12-08 17:33 ` [PATCH v18 01/15] clocksource/drivers/arm_arch_timer: Move enums and defines to header file fu.wei
2016-12-08 17:33 ` [PATCH v18 02/15] clocksource/drivers/arm_arch_timer: Add a new enum for spi type fu.wei
2016-12-08 17:33 ` [PATCH v18 03/15] clocksource/drivers/arm_arch_timer: Improve printk relevant code fu.wei
2016-12-08 21:10 ` Joe Perches
2016-12-09 8:24 ` Fu Wei
2016-12-08 17:33 ` [PATCH v18 04/15] clocksource/drivers/arm_arch_timer: rename some enums and defines fu.wei
2016-12-08 17:33 ` [PATCH v18 05/15] clocksource/drivers/arm_arch_timer: rework PPI determination fu.wei
2016-12-08 17:33 ` [PATCH v18 06/15] clocksource/drivers/arm_arch_timer: Rework counter frequency detection fu.wei
2016-12-08 17:33 ` [PATCH v18 07/15] clocksource/drivers/arm_arch_timer: Refactor arch_timer_needs_probing fu.wei
2016-12-08 17:33 ` fu.wei [this message]
2016-12-08 17:33 ` [PATCH v18 09/15] clocksource/drivers/arm_arch_timer: Introduce some new structs to prepare for GTDT fu.wei
2016-12-08 17:33 ` [PATCH v18 10/15] clocksource/drivers/arm_arch_timer: Refactor the timer init code " fu.wei
2016-12-08 17:33 ` [PATCH v18 11/15] acpi/arm64: Add GTDT table parse driver fu.wei
2016-12-08 17:33 ` [PATCH v18 12/15] clocksource/drivers/arm_arch_timer: Simplify ACPI support code fu.wei
2016-12-08 17:33 ` [PATCH v18 13/15] acpi/arm64: Add memory-mapped timer support in GTDT driver fu.wei
2016-12-08 17:33 ` [PATCH v18 14/15] clocksource/drivers/arm_arch_timer: Add GTDT support for memory-mapped timer fu.wei
2016-12-08 17:33 ` [PATCH v18 15/15] acpi/arm64: Add SBSA Generic Watchdog support in GTDT driver fu.wei
2017-01-13 19:29 ` [PATCH v18 00/15] acpi, clocksource: add GTDT driver and GTDT support in arm_arch_timer Mark Rutland
2017-01-14 11:34 ` Fu Wei
2017-01-16 0:54 ` Fu Wei
2017-01-16 11:59 ` Mark Rutland
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