[PATCH v3 20/37] ARM: davinci: aintc: move timer-specific irq_set_handler() out of irq.c

Bartosz Golaszewski
2019-02-12T10:40:52Z

I've been unable to figure out exactly why, but it seems that the
IRQ_TINT1_TINT34 interrupt for timer 1 needs to be handled as a
level irq, not edge like all others.

Let's move the handler setup out of the aintc driver where it's lived
since the beginning and into the dm* SoC-specific files where it
belongs.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
arch/arm/mach-davinci/dm355.c | 8 ++++++++
arch/arm/mach-davinci/dm365.c | 8 ++++++++
arch/arm/mach-davinci/dm644x.c | 8 ++++++++
arch/arm/mach-davinci/dm646x.c | 8 ++++++++
arch/arm/mach-davinci/irq.c | 3 ---
5 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
index c7cd765114af..a732f2ea1d9a 100644
--- a/arch/arm/mach-davinci/dm355.c
+++ b/arch/arm/mach-davinci/dm355.c
@@ -15,6 +15,7 @@
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
#include <linux/init.h>
+#include <linux/irq.h>
#include <linux/irqchip/irq-davinci-aintc.h>
#include <linux/platform_data/edma.h>
#include <linux/platform_data/gpio-davinci.h>
@@ -744,6 +745,13 @@ void __init dm355_init_time(void)
psc = ioremap(DAVINCI_PWR_SLEEP_CNTRL_BASE, SZ_4K);
dm355_psc_init(NULL, psc);

+ /*
+ * Nobody knows why anymore, but this interrupt has been handled as
+ * a level irq from the very beginning of davinci support in mainline
+ * linux.
+ */
+ irq_set_handler(DAVINCI_INTC_IRQ(IRQ_TINT1_TINT34), handle_level_irq);
+
clk = clk_get(NULL, "timer0");

davinci_timer_init(clk);
diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c
index bde3c3b94cc9..79afde34cfbb 100644
--- a/arch/arm/mach-davinci/dm365.c
+++ b/arch/arm/mach-davinci/dm365.c
@@ -19,6 +19,7 @@
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
#include <linux/init.h>
+#include <linux/irq.h>
#include <linux/irqchip/irq-davinci-aintc.h>
#include <linux/platform_data/edma.h>
#include <linux/platform_data/gpio-davinci.h>
@@ -785,6 +786,13 @@ void __init dm365_init_time(void)
psc = ioremap(DAVINCI_PWR_SLEEP_CNTRL_BASE, SZ_4K);
dm365_psc_init(NULL, psc);

+ /*
+ * Nobody knows why anymore, but this interrupt has been handled as
+ * a level irq from the very beginning of davinci support in mainline
+ * linux.
+ */
+ irq_set_handler(DAVINCI_INTC_IRQ(IRQ_TINT1_TINT34), handle_level_irq);
+
clk = clk_get(NULL, "timer0");

davinci_timer_init(clk);
diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c
index 6d3498058283..007d979d2d64 100644
--- a/arch/arm/mach-davinci/dm644x.c
+++ b/arch/arm/mach-davinci/dm644x.c
@@ -14,6 +14,7 @@
#include <linux/clkdev.h>
#include <linux/dmaengine.h>
#include <linux/init.h>
+#include <linux/irq.h>
#include <linux/irqchip/irq-davinci-aintc.h>
#include <linux/platform_data/edma.h>
#include <linux/platform_data/gpio-davinci.h>
@@ -680,6 +681,13 @@ void __init dm644x_init_time(void)
psc = ioremap(DAVINCI_PWR_SLEEP_CNTRL_BASE, SZ_4K);
dm644x_psc_init(NULL, psc);

+ /*
+ * Nobody knows why anymore, but this interrupt has been handled as
+ * a level irq from the very beginning of davinci support in mainline
+ * linux.
+ */
+ irq_set_handler(DAVINCI_INTC_IRQ(IRQ_TINT1_TINT34), handle_level_irq);
+
clk = clk_get(NULL, "timer0");

davinci_timer_init(clk);
diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c
index a0a8b336c1a4..a643d78ad644 100644
--- a/arch/arm/mach-davinci/dm646x.c
+++ b/arch/arm/mach-davinci/dm646x.c
@@ -15,6 +15,7 @@
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
#include <linux/init.h>
+#include <linux/irq.h>
#include <linux/irqchip/irq-davinci-aintc.h>
#include <linux/platform_data/edma.h>
#include <linux/platform_data/gpio-davinci.h>
@@ -664,6 +665,13 @@ void __init dm646x_init_time(unsigned long ref_clk_rate,
psc = ioremap(DAVINCI_PWR_SLEEP_CNTRL_BASE, SZ_4K);
dm646x_psc_init(NULL, psc);

+ /*
+ * Nobody knows why anymore, but this interrupt has been handled as
+ * a level irq from the very beginning of davinci support in mainline
+ * linux.
+ */
+ irq_set_handler(DAVINCI_INTC_IRQ(IRQ_TINT1_TINT34), handle_level_irq);
+
clk = clk_get(NULL, "timer0");

davinci_timer_init(clk);
diff --git a/arch/arm/mach-davinci/irq.c b/arch/arm/mach-davinci/irq.c
index 2b6943731af9..92b6e653d8cb 100644
--- a/arch/arm/mach-davinci/irq.c
+++ b/arch/arm/mach-davinci/irq.c
@@ -18,8 +18,6 @@
#include <asm/mach/irq.h>
#include <asm/exception.h>

-#include "irqs.h"
-
#define DAVINCI_AINTC_FIQ_REG0 0x00
#define DAVINCI_AINTC_FIQ_REG1 0x04
#define DAVINCI_AINTC_IRQ_REG0 0x08
@@ -165,6 +163,5 @@ void __init davinci_aintc_init(const struct davinci_aintc_config *config)
davinci_aintc_setup_gc(davinci_aintc_base + reg_off,
irq_base + irq_off, 32);

- irq_set_handler(DAVINCI_INTC_IRQ(IRQ_TINT1_TINT34), handle_level_irq);
set_handle_irq(davinci_aintc_handle_irq);
}
--
2.20.1