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ARM: S3C24XX: rework irq handling for a later dt usage

PATCH New Heiko Stübner 2 participants 11 messages Jan 27, 2013 – Jan 29, 2013

Subsystems (3)
Arm (32-bit) Arm sub-architectures Arm Samsung Exynos
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Heiko Stübner

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#0 lore raw

v4 cover ARM: S3C24XX: rework irq handling for a later dt usage

This v4 does not change any code part. The patches are merely rebased to apply to the next/cleanup-s3c24xx branch as requested.

Heiko Stuebner (9):
ARM: S3C24XX: transform irq handling into a declarative form
ARM: S3C24XX: Move irq syscore-ops to irq-pm
ARM: S3C24XX: Modify s3c_irq_wake to use the hwirq property
ARM: S3C24XX: move s3c2416 irq init to common irq code
ARM: S3C24XX: modify s3c2416 irq init to initialize all irqs
ARM: S3C24XX: transform s3c2416 irqs into new structure
ARM: S3C24XX: move s3c2443 irq code to irq.c
ARM: S3C24XX: modify s3c2443 irq init to initialize all irqs
ARM: S3C24XX: transform s3c2443 subirqs into new structure

 arch/arm/mach-s3c24xx/Makefile               |    4 +-
 arch/arm/mach-s3c24xx/common.h               |    2 +
 arch/arm/mach-s3c24xx/irq-pm.c               |   41 +-
 arch/arm/mach-s3c24xx/irq-s3c2416.c          |  348 --------
 arch/arm/mach-s3c24xx/irq-s3c2443.c          |  281 -------
 arch/arm/mach-s3c24xx/mach-smdk2416.c        |    2 +-
 arch/arm/mach-s3c24xx/mach-smdk2443.c        |    2 +-
 arch/arm/mach-s3c24xx/s3c2410.c              |    4 +-
 arch/arm/mach-s3c24xx/s3c2412.c              |    4 +-
 arch/arm/mach-s3c24xx/s3c2416.c              |    4 +-
 arch/arm/mach-s3c24xx/s3c2440.c              |    4 +-
 arch/arm/mach-s3c24xx/s3c2442.c              |    4 +-
 arch/arm/plat-s3c24xx/Kconfig                |    1 +
 arch/arm/plat-s3c24xx/irq.c                  | 1110 +++++++++++++++-----------
 arch/arm/plat-samsung/include/plat/pm.h      |    6 -
 arch/arm/plat-samsung/include/plat/s3c2416.h |    1 +
 arch/arm/plat-samsung/include/plat/s3c2443.h |    2 +
 17 files changed, 688 insertions(+), 1132 deletions(-)
 delete mode 100644 arch/arm/mach-s3c24xx/irq-s3c2416.c
 delete mode 100644 arch/arm/mach-s3c24xx/irq-s3c2443.c
Signature · 1 line
1.7.10.4
author
#1 lore raw

PATCH v4 1/9 ARM: S3C24XX: transform irq handling into a declarative form

The irqs available on the machine and even the bit settings in the irq registers differ a lot through all the s3c24xx subarchitectures. This results in each subarch having its own irq init which adds its specific irqs to the base ones created in plat-s3c24xx/irq.c.

This of course makes a future move to devicetree hard to implement.

Therefore this patch transforms the base irq handling to a declarative style, where the irq types as well as its parent/child relationship gets read from a predefined datastructure, which later on can hopefully be easily represented in devicetree too.

It should also be easy to include the subarch specific irqs here in later patches, reducing code size and duplication.

It should not affect anything outside of the file, as the original irq numbers and their handling are preserved (hopefully) correctly.

Signed-off-by Heiko Stuebner <[email protected]>

---
changes since v2:
- redo the initialization, move parts of the upcoming dt init here to enable both init variants to share the code
changes since v1:
- more generalized irq types, resulting in only types for none, eint, edge and level being needed
- use chained_irq_enter/exit to simplify subirq handling

 arch/arm/plat-s3c24xx/Kconfig |    1 +
 arch/arm/plat-s3c24xx/irq.c   |  930 ++++++++++++++++++++---------------------
 2 files changed, 445 insertions(+), 486 deletions(-)
arch/arm/plat-s3c24xx/Kconfig +1 -0
index eef3b6a..3bb5c8f 100644
@@ -9,6 +9,7 @@ config PLAT_S3C24XX
 	select ARCH_REQUIRE_GPIOLIB
 	select NO_IOPORT
 	select S3C_DEV_NAND
+	select IRQ_DOMAIN
 	help
 	  Base platform code for any Samsung S3C24XX device
arch/arm/plat-s3c24xx/irq.c +444 -486

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Signature · 1 line
1.7.10.4
author
#2 lore raw

PATCH v4 2/9 ARM: S3C24XX: Move irq syscore-ops to irq-pm

In reply to Heiko Stübner

With this the definition of s3c24xx_irq_syscore_ops can also move to common.h from plat/pm.h and the definitions of s3c24xx_irq_suspend and s3c24xx_irq_resume are also not necessary anymore in plat/pm.h

Signed-off-by Heiko Stuebner <[email protected]>
---
 arch/arm/mach-s3c24xx/common.h          |    2 ++
 arch/arm/mach-s3c24xx/irq-pm.c          |   10 ++++++++--
 arch/arm/mach-s3c24xx/s3c2410.c         |    4 +++-
 arch/arm/mach-s3c24xx/s3c2412.c         |    4 +++-
 arch/arm/mach-s3c24xx/s3c2416.c         |    4 +++-
 arch/arm/mach-s3c24xx/s3c2440.c         |    4 +++-
 arch/arm/mach-s3c24xx/s3c2442.c         |    4 +++-
 arch/arm/plat-s3c24xx/irq.c             |    6 ------
 arch/arm/plat-samsung/include/plat/pm.h |    6 ------
 9 files changed, 25 insertions(+), 19 deletions(-)
arch/arm/mach-s3c24xx/common.h +2 -0
index c2f596e..ed6276f 100644
@@ -15,4 +15,6 @@
 void s3c2410_restart(char mode, const char *cmd);
 void s3c244x_restart(char mode, const char *cmd);
 
+extern struct syscore_ops s3c24xx_irq_syscore_ops;
+
 #endif /* __ARCH_ARM_MACH_S3C24XX_COMMON_H */
arch/arm/mach-s3c24xx/irq-pm.c +8 -2
index 0efb2e2..d48126d 100644
@@ -15,6 +15,7 @@
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/syscore_ops.h>
 
 #include <plat/cpu.h>
 #include <plat/pm.h>

@@ -64,7 +65,7 @@ static unsigned long save_extint[3];
 static unsigned long save_eintflt[4];
 static unsigned long save_eintmask;
 
-int s3c24xx_irq_suspend(void)
+static int s3c24xx_irq_suspend(void)
 {
 	unsigned int i;
 

@@ -80,7 +81,7 @@ int s3c24xx_irq_suspend(void)
 	return 0;
 }
 
-void s3c24xx_irq_resume(void)
+static void s3c24xx_irq_resume(void)
 {
 	unsigned int i;
 

@@ -93,3 +94,8 @@ void s3c24xx_irq_resume(void)
 	s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save));
 	__raw_writel(save_eintmask, S3C24XX_EINTMASK);
 }
+
+struct syscore_ops s3c24xx_irq_syscore_ops = {
+	.suspend	= s3c24xx_irq_suspend,
+	.resume		= s3c24xx_irq_resume,
+};
arch/arm/mach-s3c24xx/s3c2410.c +3 -1
index a3c5cb0..9ebef95 100644
@@ -49,6 +49,8 @@
 #include <plat/gpio-cfg.h>
 #include <plat/gpio-cfg-helpers.h>
 
+#include "common.h"
+
 /* Initial IO mappings */
 
 static struct map_desc s3c2410_iodesc[] __initdata = {

@@ -182,8 +184,8 @@ int __init s3c2410_init(void)
 
 #ifdef CONFIG_PM
 	register_syscore_ops(&s3c2410_pm_syscore_ops);
-#endif
 	register_syscore_ops(&s3c24xx_irq_syscore_ops);
+#endif
 
 	return device_register(&s3c2410_dev);
 }
arch/arm/mach-s3c24xx/s3c2412.c +3 -1
index c511a22..533b4a9 100644
@@ -52,6 +52,8 @@
 #define S3C2412_SWRST			(S3C24XX_VA_CLKPWR + 0x30)
 #define S3C2412_SWRST_RESET		(0x533C2412)
 
+#include "common.h"
+
 #ifndef CONFIG_CPU_S3C2412_ONLY
 void __iomem *s3c24xx_va_gpio2 = S3C24XX_VA_GPIO;
 

@@ -245,8 +247,8 @@ int __init s3c2412_init(void)
 
 #ifdef CONFIG_PM
 	register_syscore_ops(&s3c2412_pm_syscore_ops);
-#endif
 	register_syscore_ops(&s3c24xx_irq_syscore_ops);
+#endif
 
 	return device_register(&s3c2412_dev);
 }
arch/arm/mach-s3c24xx/s3c2416.c +3 -1
index 77ee0b7..e30476d 100644
@@ -63,6 +63,8 @@
 #include <plat/rtc-core.h>
 #include <plat/spi-core.h>
 
+#include "common.h"
+
 static struct map_desc s3c2416_iodesc[] __initdata = {
 	IODESC_ENT(WATCHDOG),
 	IODESC_ENT(CLKPWR),

@@ -105,9 +107,9 @@ int __init s3c2416_init(void)
 
 #ifdef CONFIG_PM
 	register_syscore_ops(&s3c2416_pm_syscore_ops);
-#endif
 	register_syscore_ops(&s3c24xx_irq_syscore_ops);
 	register_syscore_ops(&s3c2416_irq_syscore_ops);
+#endif
 
 	return device_register(&s3c2416_dev);
 }
arch/arm/mach-s3c24xx/s3c2440.c +3 -1
index 2b3dddb..559e394 100644
@@ -40,6 +40,8 @@
 #include <plat/gpio-cfg.h>
 #include <plat/gpio-cfg-helpers.h>
 
+#include "common.h"
+
 static struct device s3c2440_dev = {
 	.bus		= &s3c2440_subsys,
 };

@@ -57,9 +59,9 @@ int __init s3c2440_init(void)
 
 #ifdef CONFIG_PM
 	register_syscore_ops(&s3c2410_pm_syscore_ops);
+	register_syscore_ops(&s3c24xx_irq_syscore_ops);
 #endif
 	register_syscore_ops(&s3c244x_pm_syscore_ops);
-	register_syscore_ops(&s3c24xx_irq_syscore_ops);
 
 	/* register our system device for everything else */
arch/arm/mach-s3c24xx/s3c2442.c +3 -1
index 22cb7c9..f732826 100644
@@ -51,6 +51,8 @@
 #include <plat/gpio-cfg.h>
 #include <plat/gpio-cfg-helpers.h>
 
+#include "common.h"
+
 /* S3C2442 extended clock support */
 
 static unsigned long s3c2442_camif_upll_round(struct clk *clk,

@@ -172,9 +174,9 @@ int __init s3c2442_init(void)
 
 #ifdef CONFIG_PM
 	register_syscore_ops(&s3c2410_pm_syscore_ops);
+	register_syscore_ops(&s3c24xx_irq_syscore_ops);
 #endif
 	register_syscore_ops(&s3c244x_pm_syscore_ops);
-	register_syscore_ops(&s3c24xx_irq_syscore_ops);
 
 	return device_register(&s3c2442_dev);
 }
arch/arm/plat-s3c24xx/irq.c +0 -6
index 9e24ef5..adb4358 100644
@@ -24,7 +24,6 @@
 #include <linux/interrupt.h>
 #include <linux/ioport.h>
 #include <linux/device.h>
-#include <linux/syscore_ops.h>
 #include <linux/irqdomain.h>
 
 #include <asm/mach/irq.h>

@@ -627,8 +626,3 @@ void __init s3c24xx_init_irq(void)
 	s3c24xx_init_intc(NULL, &init_subint[0], main_intc, 0x4a000018);
 	s3c24xx_init_intc(NULL, &init_eint[0], main_intc, 0x560000a4);
 }
-
-struct syscore_ops s3c24xx_irq_syscore_ops = {
-	.suspend	= s3c24xx_irq_suspend,
-	.resume		= s3c24xx_irq_resume,
-};
arch/arm/plat-samsung/include/plat/pm.h +0 -6
index 887a0c9..f6fcade 100644
@@ -109,17 +109,11 @@ extern void s3c_pm_do_restore_core(struct sleep_save *ptr, int count);
 #ifdef CONFIG_PM
 extern int s3c_irq_wake(struct irq_data *data, unsigned int state);
 extern int s3c_irqext_wake(struct irq_data *data, unsigned int state);
-extern int s3c24xx_irq_suspend(void);
-extern void s3c24xx_irq_resume(void);
 #else
 #define s3c_irq_wake NULL
 #define s3c_irqext_wake NULL
-#define s3c24xx_irq_suspend NULL
-#define s3c24xx_irq_resume  NULL
 #endif
 
-extern struct syscore_ops s3c24xx_irq_syscore_ops;
-
 /* PM debug functions */
 
 #ifdef CONFIG_SAMSUNG_PM_DEBUG
Signature · 1 line
1.7.10.4
author
#3 lore raw

PATCH v4 3/9 ARM: S3C24XX: Modify s3c_irq_wake to use the hwirq property

In reply to Heiko Stübner

This gets rid of the use of static irq mappings there.

Signed-off-by Heiko Stuebner <[email protected]>
---
 arch/arm/mach-s3c24xx/irq-pm.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
arch/arm/mach-s3c24xx/irq-pm.c +4 -4
index d48126d..640ec91 100644
@@ -30,18 +30,18 @@
  * set bit to 1 in allow bitfield to enable the wakeup settings on it
 */
 
-unsigned long s3c_irqwake_intallow	= 1L << (IRQ_RTC - IRQ_EINT0) | 0xfL;
+unsigned long s3c_irqwake_intallow	= 1L << 30 | 0xfL;
 unsigned long s3c_irqwake_eintallow	= 0x0000fff0L;
 
 int s3c_irq_wake(struct irq_data *data, unsigned int state)
 {
-	unsigned long irqbit = 1 << (data->irq - IRQ_EINT0);
+	unsigned long irqbit = 1 << data->hwirq;
 
 	if (!(s3c_irqwake_intallow & irqbit))
 		return -ENOENT;
 
-	printk(KERN_INFO "wake %s for irq %d\n",
-	       state ? "enabled" : "disabled", data->irq);
+	pr_info("wake %s for hwirq %lu\n",
+		state ? "enabled" : "disabled", data->hwirq);
 
 	if (!state)
 		s3c_irqwake_intmask |= irqbit;
Signature · 1 line
1.7.10.4
author
#4 lore raw

PATCH v4 4/9 ARM: S3C24XX: move s3c2416 irq init to common irq code

In reply to Heiko Stübner

This is needed to further clean up the irq init.

Signed-off-by Heiko Stuebner <[email protected]>
---
 arch/arm/mach-s3c24xx/Makefile      |    2 +-
 arch/arm/mach-s3c24xx/irq-pm.c      |   23 +++
 arch/arm/mach-s3c24xx/irq-s3c2416.c |  348 -----------------------------------
 arch/arm/plat-s3c24xx/irq.c         |  286 ++++++++++++++++++++++++++++
 4 files changed, 310 insertions(+), 349 deletions(-)
 delete mode 100644 arch/arm/mach-s3c24xx/irq-s3c2416.c
arch/arm/mach-s3c24xx/Makefile +1 -1
index 08b87cd..68d134f 100644
@@ -28,7 +28,7 @@ obj-$(CONFIG_S3C2412_DMA)	+= dma-s3c2412.o
 obj-$(CONFIG_S3C2412_PM)	+= pm-s3c2412.o
 obj-$(CONFIG_S3C2412_PM_SLEEP)	+= sleep-s3c2412.o
 
-obj-$(CONFIG_CPU_S3C2416)	+= s3c2416.o irq-s3c2416.o clock-s3c2416.o
+obj-$(CONFIG_CPU_S3C2416)	+= s3c2416.o clock-s3c2416.o
 obj-$(CONFIG_S3C2416_PM)	+= pm-s3c2416.o
 
 obj-$(CONFIG_CPU_S3C2440)	+= s3c2440.o irq-s3c2440.o clock-s3c2440.o
arch/arm/mach-s3c24xx/irq-pm.c +23 -0
index 640ec91..e119959 100644
@@ -99,3 +99,26 @@ struct syscore_ops s3c24xx_irq_syscore_ops = {
 	.suspend	= s3c24xx_irq_suspend,
 	.resume		= s3c24xx_irq_resume,
 };
+
+#ifdef CONFIG_CPU_S3C2416
+static struct sleep_save s3c2416_irq_save[] = {
+	SAVE_ITEM(S3C2416_INTMSK2),
+};
+
+static int s3c2416_irq_suspend(void)
+{
+	s3c_pm_do_save(s3c2416_irq_save, ARRAY_SIZE(s3c2416_irq_save));
+
+	return 0;
+}
+
+static void s3c2416_irq_resume(void)
+{
+	s3c_pm_do_restore(s3c2416_irq_save, ARRAY_SIZE(s3c2416_irq_save));
+}
+
+struct syscore_ops s3c2416_irq_syscore_ops = {
+	.suspend	= s3c2416_irq_suspend,
+	.resume		= s3c2416_irq_resume,
+};
+#endif
arch/arm/mach-s3c24xx/irq-s3c2416.c deleted +0 -348

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arch/arm/plat-s3c24xx/irq.c +286 -0

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Signature · 1 line
1.7.10.4
author
#5 lore raw

PATCH v4 5/9 ARM: S3C24XX: modify s3c2416 irq init to initialize all irqs

In reply to Heiko Stübner

Previously the irq init used s3c24xx_init_irq and an additional arch_initcall to add the cpu specific irqs.

To be able to simplyfy the irq init later, create a new function s3c416_init_irq, which then calls s3c24xx_init_irq but also adds the cpu specific irqs.

Signed-off-by Heiko Stuebner <[email protected]>
---
 arch/arm/mach-s3c24xx/mach-smdk2416.c        |    2 +-
 arch/arm/plat-s3c24xx/irq.c                  |   22 ++++------------------
 arch/arm/plat-samsung/include/plat/s3c2416.h |    1 +
 3 files changed, 6 insertions(+), 19 deletions(-)
arch/arm/mach-s3c24xx/mach-smdk2416.c +1 -1
index 7de4120..2abb66f 100644
@@ -250,7 +250,7 @@ MACHINE_START(SMDK2416, "SMDK2416")
 	/* Maintainer: Yauhen Kharuzhy <[email protected]> */
 	.atag_offset	= 0x100,
 
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2416_init_irq,
 	.map_io		= smdk2416_map_io,
 	.init_machine	= smdk2416_machine_init,
 	.timer		= &s3c24xx_timer,
arch/arm/plat-s3c24xx/irq.c +4 -18
index 131f747..3763b91 100644
@@ -874,10 +874,11 @@ static void s3c2416_irq_add_second(void)
 	}
 }
 
-static int s3c2416_irq_add(struct device *dev,
-				  struct subsys_interface *sif)
+void __init s3c2416_init_irq(void)
 {
-	printk(KERN_INFO "S3C2416: IRQ Support\n");
+	pr_info("S3C2416: IRQ Support\n");
+
+	s3c24xx_init_irq();
 
 	s3c2416_add_sub(IRQ_LCD, s3c2416_irq_demux_lcd, &s3c2416_irq_lcd,
 			IRQ_S3C2443_LCD2, IRQ_S3C2443_LCD4);

@@ -894,21 +895,6 @@ static int s3c2416_irq_add(struct device *dev,
 			IRQ_S3C2443_WDT, IRQ_S3C2443_AC97);
 
 	s3c2416_irq_add_second();
-
-	return 0;
 }
 
-static struct subsys_interface s3c2416_irq_interface = {
-	.name		= "s3c2416_irq",
-	.subsys		= &s3c2416_subsys,
-	.add_dev	= s3c2416_irq_add,
-};
-
-static int __init s3c2416_irq_init(void)
-{
-	return subsys_interface_register(&s3c2416_irq_interface);
-}
-
-arch_initcall(s3c2416_irq_init);
-
 #endif
arch/arm/plat-samsung/include/plat/s3c2416.h +1 -0
index 7178e33..f27399a 100644
@@ -25,6 +25,7 @@ extern  int s3c2416_baseclk_add(void);
 
 extern void s3c2416_restart(char mode, const char *cmd);
 
+extern void s3c2416_init_irq(void);
 extern struct syscore_ops s3c2416_irq_syscore_ops;
 
 #else
Signature · 1 line
1.7.10.4
author
#6 lore raw

PATCH v4 6/9 ARM: S3C24XX: transform s3c2416 irqs into new structure

In reply to Heiko Stübner

Share the common irq code by simply defining a correct mapping declaration for the s3c2416.

Signed-off-by Heiko Stuebner <[email protected]>
---
 arch/arm/plat-s3c24xx/irq.c |  342 +++++++++++--------------------------------
 1 file changed, 87 insertions(+), 255 deletions(-)
arch/arm/plat-s3c24xx/irq.c +87 -255
index 3763b91..c6d0d57 100644
@@ -352,7 +352,8 @@ static int s3c24xx_irq_map(struct irq_domain *h, unsigned int virq,
 						 handle_edge_irq);
 		break;
 	case S3C_IRQTYPE_EDGE:
-		if (irq_data->parent_irq)
+		if (irq_data->parent_irq ||
+		    intc->reg_pending == S3C2416_SRCPND2)
 			irq_set_chip_and_handler(virq, &s3c_irq_level_chip,
 						 handle_edge_irq);
 		else

@@ -628,273 +629,104 @@ void __init s3c24xx_init_irq(void)
 }
 
 #ifdef CONFIG_CPU_S3C2416
-#define INTMSK(start, end) ((1 << ((end) + 1 - (start))) - 1)
-
-static inline void s3c2416_irq_demux(unsigned int irq, unsigned int len)
-{
-	unsigned int subsrc, submsk;
-	unsigned int end;
-
-	/* read the current pending interrupts, and the mask
-	 * for what it is available */
-
-	subsrc = __raw_readl(S3C2410_SUBSRCPND);
-	submsk = __raw_readl(S3C2410_INTSUBMSK);
-
-	subsrc  &= ~submsk;
-	subsrc >>= (irq - S3C2410_IRQSUB(0));
-	subsrc  &= (1 << len)-1;
-
-	end = len + irq;
-
-	for (; irq < end && subsrc; irq++) {
-		if (subsrc & 1)
-			generic_handle_irq(irq);
-
-		subsrc >>= 1;
-	}
-}
-
-/* WDT/AC97 sub interrupts */
-
-static void s3c2416_irq_demux_wdtac97(unsigned int irq, struct irq_desc *desc)
-{
-	s3c2416_irq_demux(IRQ_S3C2443_WDT, 4);
-}
-
-#define INTMSK_WDTAC97	(1UL << (IRQ_WDT - IRQ_EINT0))
-#define SUBMSK_WDTAC97	INTMSK(IRQ_S3C2443_WDT, IRQ_S3C2443_AC97)
-
-static void s3c2416_irq_wdtac97_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_WDTAC97, SUBMSK_WDTAC97);
-}
-
-static void s3c2416_irq_wdtac97_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_WDTAC97);
-}
-
-static void s3c2416_irq_wdtac97_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_WDTAC97, SUBMSK_WDTAC97);
-}
-
-static struct irq_chip s3c2416_irq_wdtac97 = {
-	.irq_mask	= s3c2416_irq_wdtac97_mask,
-	.irq_unmask	= s3c2416_irq_wdtac97_unmask,
-	.irq_ack	= s3c2416_irq_wdtac97_ack,
-};
-
-/* LCD sub interrupts */
-
-static void s3c2416_irq_demux_lcd(unsigned int irq, struct irq_desc *desc)
-{
-	s3c2416_irq_demux(IRQ_S3C2443_LCD1, 4);
-}
-
-#define INTMSK_LCD	(1UL << (IRQ_LCD - IRQ_EINT0))
-#define SUBMSK_LCD	INTMSK(IRQ_S3C2443_LCD1, IRQ_S3C2443_LCD4)
-
-static void s3c2416_irq_lcd_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_LCD, SUBMSK_LCD);
-}
-
-static void s3c2416_irq_lcd_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_LCD);
-}
-
-static void s3c2416_irq_lcd_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_LCD, SUBMSK_LCD);
-}
-
-static struct irq_chip s3c2416_irq_lcd = {
-	.irq_mask	= s3c2416_irq_lcd_mask,
-	.irq_unmask	= s3c2416_irq_lcd_unmask,
-	.irq_ack	= s3c2416_irq_lcd_ack,
-};
-
-/* DMA sub interrupts */
-
-static void s3c2416_irq_demux_dma(unsigned int irq, struct irq_desc *desc)
-{
-	s3c2416_irq_demux(IRQ_S3C2443_DMA0, 6);
-}
-
-#define INTMSK_DMA	(1UL << (IRQ_S3C2443_DMA - IRQ_EINT0))
-#define SUBMSK_DMA	INTMSK(IRQ_S3C2443_DMA0, IRQ_S3C2443_DMA5)
-
-
-static void s3c2416_irq_dma_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_DMA, SUBMSK_DMA);
-}
-
-static void s3c2416_irq_dma_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_DMA);
-}
-
-static void s3c2416_irq_dma_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_DMA, SUBMSK_DMA);
-}
-
-static struct irq_chip s3c2416_irq_dma = {
-	.irq_mask	= s3c2416_irq_dma_mask,
-	.irq_unmask	= s3c2416_irq_dma_unmask,
-	.irq_ack	= s3c2416_irq_dma_ack,
+static struct s3c_irq_data init_s3c2416base[32] = {
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
+	{ .type = S3C_IRQTYPE_NONE, }, /* reserved */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TICK */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* WDT/AC97 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* LCD */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* DMA */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART3 */
+	{ .type = S3C_IRQTYPE_NONE, }, /* reserved */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SDI1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SDI0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* NAND */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* USBD */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* USBH */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* IIC */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
+	{ .type = S3C_IRQTYPE_NONE, },
+	{ .type = S3C_IRQTYPE_EDGE, }, /* RTC */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
 };
 
-/* UART3 sub interrupts */
-
-static void s3c2416_irq_demux_uart3(unsigned int irq, struct irq_desc *desc)
-{
-	s3c2416_irq_demux(IRQ_S3C2443_RX3, 3);
-}
-
-#define INTMSK_UART3	(1UL << (IRQ_S3C2443_UART3 - IRQ_EINT0))
-#define SUBMSK_UART3	(0x7 << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
-
-static void s3c2416_irq_uart3_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_UART3, SUBMSK_UART3);
-}
-
-static void s3c2416_irq_uart3_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_UART3);
-}
-
-static void s3c2416_irq_uart3_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_UART3, SUBMSK_UART3);
-}
-
-static struct irq_chip s3c2416_irq_uart3 = {
-	.irq_mask	= s3c2416_irq_uart3_mask,
-	.irq_unmask	= s3c2416_irq_uart3_unmask,
-	.irq_ack	= s3c2416_irq_uart3_ack,
+static struct s3c_irq_data init_s3c2416subint[32] = {
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
+	{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
+	{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
+	{ .type = S3C_IRQTYPE_NONE }, /* reserved */
+	{ .type = S3C_IRQTYPE_NONE }, /* reserved */
+	{ .type = S3C_IRQTYPE_NONE }, /* reserved */
+	{ .type = S3C_IRQTYPE_NONE }, /* reserved */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD2 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD3 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD4 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA0 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA1 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA2 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA3 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA4 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA5 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* WDT */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* AC97 */
 };
 
-/* second interrupt register */
-
-static inline void s3c2416_irq_ack_second(struct irq_data *data)
-{
-	unsigned long bitval = 1UL << (data->irq - IRQ_S3C2416_2D);
-
-	__raw_writel(bitval, S3C2416_SRCPND2);
-	__raw_writel(bitval, S3C2416_INTPND2);
-}
-
-static void s3c2416_irq_mask_second(struct irq_data *data)
-{
-	unsigned long bitval = 1UL << (data->irq - IRQ_S3C2416_2D);
-	unsigned long mask;
-
-	mask = __raw_readl(S3C2416_INTMSK2);
-	mask |= bitval;
-	__raw_writel(mask, S3C2416_INTMSK2);
-}
-
-static void s3c2416_irq_unmask_second(struct irq_data *data)
-{
-	unsigned long bitval = 1UL << (data->irq - IRQ_S3C2416_2D);
-	unsigned long mask;
-
-	mask = __raw_readl(S3C2416_INTMSK2);
-	mask &= ~bitval;
-	__raw_writel(mask, S3C2416_INTMSK2);
-}
-
-static struct irq_chip s3c2416_irq_second = {
-	.irq_ack	= s3c2416_irq_ack_second,
-	.irq_mask	= s3c2416_irq_mask_second,
-	.irq_unmask	= s3c2416_irq_unmask_second,
+static struct s3c_irq_data init_s3c2416_second[32] = {
+	{ .type = S3C_IRQTYPE_EDGE }, /* 2D */
+	{ .type = S3C_IRQTYPE_EDGE }, /* IIC1 */
+	{ .type = S3C_IRQTYPE_NONE }, /* reserved */
+	{ .type = S3C_IRQTYPE_NONE }, /* reserved */
+	{ .type = S3C_IRQTYPE_EDGE }, /* PCM0 */
+	{ .type = S3C_IRQTYPE_EDGE }, /* PCM1 */
+	{ .type = S3C_IRQTYPE_EDGE }, /* I2S0 */
+	{ .type = S3C_IRQTYPE_EDGE }, /* I2S1 */
 };
 
-
-/* IRQ initialisation code */
-
-static int s3c2416_add_sub(unsigned int base,
-				   void (*demux)(unsigned int,
-						 struct irq_desc *),
-				   struct irq_chip *chip,
-				   unsigned int start, unsigned int end)
-{
-	unsigned int irqno;
-
-	irq_set_chip_and_handler(base, &s3c_irq_level_chip, handle_level_irq);
-	irq_set_chained_handler(base, demux);
-
-	for (irqno = start; irqno <= end; irqno++) {
-		irq_set_chip_and_handler(irqno, chip, handle_level_irq);
-		set_irq_flags(irqno, IRQF_VALID);
-	}
-
-	return 0;
-}
-
-static void s3c2416_irq_add_second(void)
-{
-	unsigned long pend;
-	unsigned long last;
-	int irqno;
-	int i;
-
-	/* first, clear all interrupts pending... */
-	last = 0;
-	for (i = 0; i < 4; i++) {
-		pend = __raw_readl(S3C2416_INTPND2);
-
-		if (pend == 0 || pend == last)
-			break;
-
-		__raw_writel(pend, S3C2416_SRCPND2);
-		__raw_writel(pend, S3C2416_INTPND2);
-		printk(KERN_INFO "irq: clearing pending status %08x\n",
-		       (int)pend);
-		last = pend;
-	}
-
-	for (irqno = IRQ_S3C2416_2D; irqno <= IRQ_S3C2416_I2S1; irqno++) {
-		switch (irqno) {
-		case IRQ_S3C2416_RESERVED2:
-		case IRQ_S3C2416_RESERVED3:
-			/* no IRQ here */
-			break;
-		default:
-			irq_set_chip_and_handler(irqno, &s3c2416_irq_second,
-						 handle_edge_irq);
-			set_irq_flags(irqno, IRQF_VALID);
-		}
-	}
-}
-
 void __init s3c2416_init_irq(void)
 {
-	pr_info("S3C2416: IRQ Support\n");
-
-	s3c24xx_init_irq();
+	struct s3c_irq_intc *main_intc;
 
-	s3c2416_add_sub(IRQ_LCD, s3c2416_irq_demux_lcd, &s3c2416_irq_lcd,
-			IRQ_S3C2443_LCD2, IRQ_S3C2443_LCD4);
+	pr_info("S3C2416: IRQ Support\n");
 
-	s3c2416_add_sub(IRQ_S3C2443_DMA, s3c2416_irq_demux_dma,
-			&s3c2416_irq_dma, IRQ_S3C2443_DMA0, IRQ_S3C2443_DMA5);
+#ifdef CONFIG_FIQ
+	init_FIQ(FIQ_START);
+#endif
 
-	s3c2416_add_sub(IRQ_S3C2443_UART3, s3c2416_irq_demux_uart3,
-			&s3c2416_irq_uart3,
-			IRQ_S3C2443_RX3, IRQ_S3C2443_ERR3);
+	main_intc = s3c24xx_init_intc(NULL, &init_s3c2416base[0], NULL, 0x4a000000);
+	if (IS_ERR(main_intc)) {
+		pr_err("irq: could not create main interrupt controller\n");
+		return;
+	}
 
-	s3c2416_add_sub(IRQ_WDT, s3c2416_irq_demux_wdtac97,
-			&s3c2416_irq_wdtac97,
-			IRQ_S3C2443_WDT, IRQ_S3C2443_AC97);
+	s3c24xx_init_intc(NULL, &init_eint[0], main_intc, 0x560000a4);
+	s3c24xx_init_intc(NULL, &init_s3c2416subint[0], main_intc, 0x4a000018);
 
-	s3c2416_irq_add_second();
+	s3c24xx_init_intc(NULL, &init_s3c2416_second[0], NULL, 0x4a000040);
 }
 
 #endif
Signature · 1 line
1.7.10.4
author
#7 lore raw

PATCH v4 7/9 ARM: S3C24XX: move s3c2443 irq code to irq.c

In reply to Heiko Stübner

Prequisite for further optimizations.

Signed-off-by Heiko Stuebner <[email protected]>
---
 arch/arm/mach-s3c24xx/Makefile      |    2 +-
 arch/arm/mach-s3c24xx/irq-s3c2443.c |  281 -----------------------------------
 arch/arm/plat-s3c24xx/irq.c         |  243 ++++++++++++++++++++++++++++++
 3 files changed, 244 insertions(+), 282 deletions(-)
 delete mode 100644 arch/arm/mach-s3c24xx/irq-s3c2443.c
arch/arm/mach-s3c24xx/Makefile +1 -1
index 68d134f..1d67582 100644
@@ -39,7 +39,7 @@ obj-$(CONFIG_S3C2440_DMA)	+= dma-s3c2440.o
 obj-$(CONFIG_S3C2440_PLL_12000000) += pll-s3c2440-12000000.o
 obj-$(CONFIG_S3C2440_PLL_16934400) += pll-s3c2440-16934400.o
 
-obj-$(CONFIG_CPU_S3C2443)	+= s3c2443.o irq-s3c2443.o clock-s3c2443.o
+obj-$(CONFIG_CPU_S3C2443)	+= s3c2443.o clock-s3c2443.o
 
 # PM
arch/arm/mach-s3c24xx/irq-s3c2443.c deleted +0 -281

281 lines not on this page · raw message

arch/arm/plat-s3c24xx/irq.c +243 -0

246 lines not on this page · raw message

Signature · 1 line
1.7.10.4
author
#8 lore raw

PATCH v4 8/9 ARM: S3C24XX: modify s3c2443 irq init to initialize all irqs

In reply to Heiko Stübner

Previously the irq init used s3c24xx_init_irq and an additional arch_initcall to add the cpu specific irqs.

To be able to simplyfy the irq init later, create a new function s3c2443_init_irq, which then calls s3c24xx_init_irq but also adds the cpu specific irqs.

Signed-off-by Heiko Stuebner <[email protected]>
---
 arch/arm/mach-s3c24xx/mach-smdk2443.c        |    2 +-
 arch/arm/plat-s3c24xx/irq.c                  |   22 ++++------------------
 arch/arm/plat-samsung/include/plat/s3c2443.h |    2 ++
 3 files changed, 7 insertions(+), 19 deletions(-)
arch/arm/mach-s3c24xx/mach-smdk2443.c +1 -1
index c6d1a03..8b65a54 100644
@@ -140,7 +140,7 @@ MACHINE_START(SMDK2443, "SMDK2443")
 	/* Maintainer: Ben Dooks <[email protected]> */
 	.atag_offset	= 0x100,
 
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2443_init_irq,
 	.map_io		= smdk2443_map_io,
 	.init_machine	= smdk2443_machine_init,
 	.timer		= &s3c24xx_timer,
arch/arm/plat-s3c24xx/irq.c +4 -18
index 0a051eb..4cf3c13 100644
@@ -935,10 +935,11 @@ static int s3c2443_add_sub(unsigned int base,
 	return 0;
 }
 
-static int s3c2443_irq_add(struct device *dev,
-				  struct subsys_interface *sif)
+void __init s3c2443_init_irq(void)
 {
-	printk("S3C2443: IRQ Support\n");
+	pr_info("S3C2443: IRQ Support\n");
+
+	s3c24xx_init_irq();
 
 	s3c2443_add_sub(IRQ_CAM, s3c2443_irq_demux_cam, &s3c2443_irq_cam,
 			IRQ_S3C2440_CAM_C, IRQ_S3C2440_CAM_P);

@@ -956,20 +957,5 @@ static int s3c2443_irq_add(struct device *dev,
 	s3c2443_add_sub(IRQ_WDT, s3c2443_irq_demux_wdtac97,
 			&s3c2443_irq_wdtac97,
 			IRQ_S3C2443_WDT, IRQ_S3C2443_AC97);
-
-	return 0;
 }
-
-static struct subsys_interface s3c2443_irq_interface = {
-	.name		= "s3c2443_irq",
-	.subsys		= &s3c2443_subsys,
-	.add_dev	= s3c2443_irq_add,
-};
-
-static int __init s3c2443_irq_init(void)
-{
-	return subsys_interface_register(&s3c2443_irq_interface);
-}
-
-arch_initcall(s3c2443_irq_init);
 #endif
arch/arm/plat-samsung/include/plat/s3c2443.h +2 -0
index a5b794f..71b88ec 100644
@@ -25,6 +25,8 @@ extern void s3c2443_init_clocks(int xtal);
 extern  int s3c2443_baseclk_add(void);
 
 extern void s3c2443_restart(char mode, const char *cmd);
+
+extern void s3c2443_init_irq(void);
 #else
 #define s3c2443_init_clocks NULL
 #define s3c2443_init_uarts NULL
Signature · 1 line
1.7.10.4
author
#9 lore raw

PATCH v4 9/9 ARM: S3C24XX: transform s3c2443 subirqs into new structure

In reply to Heiko Stübner

Share the common irq code by simply defining a correct mapping declaration for the s3c2443.

Signed-off-by Heiko Stuebner <[email protected]>
---
 arch/arm/plat-s3c24xx/irq.c |  289 +++++++++++--------------------------------
 1 file changed, 75 insertions(+), 214 deletions(-)
arch/arm/plat-s3c24xx/irq.c +75 -214
index 4cf3c13..969426b 100644
@@ -732,230 +732,91 @@ void __init s3c2416_init_irq(void)
 #endif
 
 #ifdef CONFIG_CPU_S3C2443
-#define INTMSK(start, end) ((1 << ((end) + 1 - (start))) - 1)
-
-static inline void s3c2443_irq_demux(unsigned int irq, unsigned int len)
-{
-	unsigned int subsrc, submsk;
-	unsigned int end;
-
-	/* read the current pending interrupts, and the mask
-	 * for what it is available */
-
-	subsrc = __raw_readl(S3C2410_SUBSRCPND);
-	submsk = __raw_readl(S3C2410_INTSUBMSK);
-
-	subsrc  &= ~submsk;
-	subsrc >>= (irq - S3C2410_IRQSUB(0));
-	subsrc  &= (1 << len)-1;
-
-	end = len + irq;
-
-	for (; irq < end && subsrc; irq++) {
-		if (subsrc & 1)
-			generic_handle_irq(irq);
-
-		subsrc >>= 1;
-	}
-}
-
-/* WDT/AC97 sub interrupts */
-
-static void s3c2443_irq_demux_wdtac97(unsigned int irq, struct irq_desc *desc)
-{
-	s3c2443_irq_demux(IRQ_S3C2443_WDT, 4);
-}
-
-#define INTMSK_WDTAC97	(1UL << (IRQ_WDT - IRQ_EINT0))
-#define SUBMSK_WDTAC97	INTMSK(IRQ_S3C2443_WDT, IRQ_S3C2443_AC97)
-
-static void s3c2443_irq_wdtac97_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_WDTAC97, SUBMSK_WDTAC97);
-}
-
-static void s3c2443_irq_wdtac97_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_WDTAC97);
-}
-
-static void s3c2443_irq_wdtac97_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_WDTAC97, SUBMSK_WDTAC97);
-}
-
-static struct irq_chip s3c2443_irq_wdtac97 = {
-	.irq_mask	= s3c2443_irq_wdtac97_mask,
-	.irq_unmask	= s3c2443_irq_wdtac97_unmask,
-	.irq_ack	= s3c2443_irq_wdtac97_ack,
-};
-
-/* LCD sub interrupts */
-
-static void s3c2443_irq_demux_lcd(unsigned int irq, struct irq_desc *desc)
-{
-	s3c2443_irq_demux(IRQ_S3C2443_LCD1, 4);
-}
-
-#define INTMSK_LCD	(1UL << (IRQ_LCD - IRQ_EINT0))
-#define SUBMSK_LCD	INTMSK(IRQ_S3C2443_LCD1, IRQ_S3C2443_LCD4)
-
-static void s3c2443_irq_lcd_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_LCD, SUBMSK_LCD);
-}
-
-static void s3c2443_irq_lcd_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_LCD);
-}
-
-static void s3c2443_irq_lcd_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_LCD, SUBMSK_LCD);
-}
-
-static struct irq_chip s3c2443_irq_lcd = {
-	.irq_mask	= s3c2443_irq_lcd_mask,
-	.irq_unmask	= s3c2443_irq_lcd_unmask,
-	.irq_ack	= s3c2443_irq_lcd_ack,
-};
-
-/* DMA sub interrupts */
-
-static void s3c2443_irq_demux_dma(unsigned int irq, struct irq_desc *desc)
-{
-	s3c2443_irq_demux(IRQ_S3C2443_DMA0, 6);
-}
-
-#define INTMSK_DMA	(1UL << (IRQ_S3C2443_DMA - IRQ_EINT0))
-#define SUBMSK_DMA	INTMSK(IRQ_S3C2443_DMA0, IRQ_S3C2443_DMA5)
-
-static void s3c2443_irq_dma_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_DMA, SUBMSK_DMA);
-}
-
-static void s3c2443_irq_dma_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_DMA);
-}
-
-static void s3c2443_irq_dma_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_DMA, SUBMSK_DMA);
-}
-
-static struct irq_chip s3c2443_irq_dma = {
-	.irq_mask	= s3c2443_irq_dma_mask,
-	.irq_unmask	= s3c2443_irq_dma_unmask,
-	.irq_ack	= s3c2443_irq_dma_ack,
-};
-
-/* UART3 sub interrupts */
-
-static void s3c2443_irq_demux_uart3(unsigned int irq, struct irq_desc *desc)
-{
-	s3c2443_irq_demux(IRQ_S3C2443_RX3, 3);
-}
-
-#define INTMSK_UART3	(1UL << (IRQ_S3C2443_UART3 - IRQ_EINT0))
-#define SUBMSK_UART3	(0x7 << (IRQ_S3C2443_RX3 - S3C2410_IRQSUB(0)))
-
-static void s3c2443_irq_uart3_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_UART3, SUBMSK_UART3);
-}
-
-static void s3c2443_irq_uart3_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_UART3);
-}
-
-static void s3c2443_irq_uart3_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_UART3, SUBMSK_UART3);
-}
-
-static struct irq_chip s3c2443_irq_uart3 = {
-	.irq_mask	= s3c2443_irq_uart3_mask,
-	.irq_unmask	= s3c2443_irq_uart3_unmask,
-	.irq_ack	= s3c2443_irq_uart3_ack,
+static struct s3c_irq_data init_s3c2443base[32] = {
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT0 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT1 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT2 */
+	{ .type = S3C_IRQTYPE_EINT, }, /* EINT3 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT4to7 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* EINT8to23 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* CAM */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* nBATT_FLT */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TICK */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* WDT/AC97 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER2 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER3 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* TIMER4 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART2 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* LCD */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* DMA */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART3 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* CFON */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SDI1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SDI0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SPI0 */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* NAND */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* USBD */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* USBH */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* IIC */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* UART0 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* SPI1 */
+	{ .type = S3C_IRQTYPE_EDGE, }, /* RTC */
+	{ .type = S3C_IRQTYPE_LEVEL, }, /* ADCPARENT */
 };
 
-/* CAM sub interrupts */
 
-static void s3c2443_irq_demux_cam(unsigned int irq, struct irq_desc *desc)
-{
-	s3c2443_irq_demux(IRQ_S3C2440_CAM_C, 4);
-}
-
-#define INTMSK_CAM	(1UL << (IRQ_CAM - IRQ_EINT0))
-#define SUBMSK_CAM	INTMSK(IRQ_S3C2440_CAM_C, IRQ_S3C2440_CAM_P)
-
-static void s3c2443_irq_cam_mask(struct irq_data *data)
-{
-	s3c_irqsub_mask(data->irq, INTMSK_CAM, SUBMSK_CAM);
-}
-
-static void s3c2443_irq_cam_unmask(struct irq_data *data)
-{
-	s3c_irqsub_unmask(data->irq, INTMSK_CAM);
-}
-
-static void s3c2443_irq_cam_ack(struct irq_data *data)
-{
-	s3c_irqsub_maskack(data->irq, INTMSK_CAM, SUBMSK_CAM);
-}
-
-static struct irq_chip s3c2443_irq_cam = {
-	.irq_mask	= s3c2443_irq_cam_mask,
-	.irq_unmask	= s3c2443_irq_cam_unmask,
-	.irq_ack	= s3c2443_irq_cam_ack,
+static struct s3c_irq_data init_s3c2443subint[32] = {
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 28 }, /* UART0-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 23 }, /* UART1-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 15 }, /* UART2-ERR */
+	{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* TC */
+	{ .type = S3C_IRQTYPE_EDGE, .parent_irq = 31 }, /* ADC */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_C */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 6 }, /* CAM_P */
+	{ .type = S3C_IRQTYPE_NONE }, /* reserved */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD1 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD2 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD3 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 16 }, /* LCD4 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA0 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA1 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA2 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA3 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA4 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 17 }, /* DMA5 */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-RX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-TX */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 18 }, /* UART3-ERR */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* WDT */
+	{ .type = S3C_IRQTYPE_LEVEL, .parent_irq = 9 }, /* AC97 */
 };
 
-/* IRQ initialisation code */
-
-static int s3c2443_add_sub(unsigned int base,
-				   void (*demux)(unsigned int,
-						 struct irq_desc *),
-				   struct irq_chip *chip,
-				   unsigned int start, unsigned int end)
-{
-	unsigned int irqno;
-
-	irq_set_chip_and_handler(base, &s3c_irq_level_chip, handle_level_irq);
-	irq_set_chained_handler(base, demux);
-
-	for (irqno = start; irqno <= end; irqno++) {
-		irq_set_chip_and_handler(irqno, chip, handle_level_irq);
-		set_irq_flags(irqno, IRQF_VALID);
-	}
-
-	return 0;
-}
-
 void __init s3c2443_init_irq(void)
 {
-	pr_info("S3C2443: IRQ Support\n");
-
-	s3c24xx_init_irq();
-
-	s3c2443_add_sub(IRQ_CAM, s3c2443_irq_demux_cam, &s3c2443_irq_cam,
-			IRQ_S3C2440_CAM_C, IRQ_S3C2440_CAM_P);
+	struct s3c_irq_intc *main_intc;
 
-	s3c2443_add_sub(IRQ_LCD, s3c2443_irq_demux_lcd, &s3c2443_irq_lcd,
-			IRQ_S3C2443_LCD1, IRQ_S3C2443_LCD4);
+	pr_info("S3C2443: IRQ Support\n");
 
-	s3c2443_add_sub(IRQ_S3C2443_DMA, s3c2443_irq_demux_dma,
-			&s3c2443_irq_dma, IRQ_S3C2443_DMA0, IRQ_S3C2443_DMA5);
+#ifdef CONFIG_FIQ
+	init_FIQ(FIQ_START);
+#endif
 
-	s3c2443_add_sub(IRQ_S3C2443_UART3, s3c2443_irq_demux_uart3,
-			&s3c2443_irq_uart3,
-			IRQ_S3C2443_RX3, IRQ_S3C2443_ERR3);
+	main_intc = s3c24xx_init_intc(NULL, &init_s3c2443base[0], NULL, 0x4a000000);
+	if (IS_ERR(main_intc)) {
+		pr_err("irq: could not create main interrupt controller\n");
+		return;
+	}
 
-	s3c2443_add_sub(IRQ_WDT, s3c2443_irq_demux_wdtac97,
-			&s3c2443_irq_wdtac97,
-			IRQ_S3C2443_WDT, IRQ_S3C2443_AC97);
+	s3c24xx_init_intc(NULL, &init_eint[0], main_intc, 0x560000a4);
+	s3c24xx_init_intc(NULL, &init_s3c2443subint[0], main_intc, 0x4a000018);
 }
 #endif
Signature · 1 line
1.7.10.4
#10 lore raw

v4 cover ARM: S3C24XX: rework irq handling for a later dt usage

In reply to Heiko Stübner
Quoted 15 lines · Heiko St?bner

This v4 does not change any code part. The patches are merely rebased to apply to the next/cleanup-s3c24xx branch as requested.

Heiko Stuebner (9):
ARM: S3C24XX: transform irq handling into a declarative form
ARM: S3C24XX: Move irq syscore-ops to irq-pm
ARM: S3C24XX: Modify s3c_irq_wake to use the hwirq property
ARM: S3C24XX: move s3c2416 irq init to common irq code
ARM: S3C24XX: modify s3c2416 irq init to initialize all irqs
ARM: S3C24XX: transform s3c2416 irqs into new structure
ARM: S3C24XX: move s3c2443 irq code to irq.c
ARM: S3C24XX: modify s3c2443 irq init to initialize all irqs
ARM: S3C24XX: transform s3c2443 subirqs into new structure

Quoted 14 lines
 arch/arm/mach-s3c24xx/Makefile               |    4 +-
 arch/arm/mach-s3c24xx/common.h               |    2 +
 arch/arm/mach-s3c24xx/irq-pm.c               |   41 +-
 arch/arm/mach-s3c24xx/irq-s3c2416.c          |  348 --------
 arch/arm/mach-s3c24xx/irq-s3c2443.c          |  281 -------
 arch/arm/mach-s3c24xx/mach-smdk2416.c        |    2 +-
 arch/arm/mach-s3c24xx/mach-smdk2443.c        |    2 +-
 arch/arm/mach-s3c24xx/s3c2410.c              |    4 +-
 arch/arm/mach-s3c24xx/s3c2412.c              |    4 +-
 arch/arm/mach-s3c24xx/s3c2416.c              |    4 +-
 arch/arm/mach-s3c24xx/s3c2440.c              |    4 +-
 arch/arm/mach-s3c24xx/s3c2442.c              |    4 +-
 arch/arm/plat-s3c24xx/Kconfig                |    1 +
 arch/arm/plat-s3c24xx/irq.c                  | 1110

+++++++++++++++-----------

Quoted 9 lines
 arch/arm/plat-samsung/include/plat/pm.h      |    6 -
 arch/arm/plat-samsung/include/plat/s3c2416.h |    1 +
 arch/arm/plat-samsung/include/plat/s3c2443.h |    2 +
 17 files changed, 688 insertions(+), 1132 deletions(-)
 delete mode 100644 arch/arm/mach-s3c24xx/irq-s3c2416.c
 delete mode 100644 arch/arm/mach-s3c24xx/irq-s3c2443.c

--
1.7.10.4

Looks good to me, applied.

Thanks.

- Kukjin