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Commit 83a84efc authored by Shawn Guo's avatar Shawn Guo
Browse files

ARM: mxs: adopt irq_domain support for icoll driver 



Remove irq_domain_add_legacy call from mach-mxs.c and have icoll adopt
irq_domain support in the driver.

Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
parent 4e0a1b8c

arch/arm/boot/dts/imx23.dtsi

+1 −1
Original line number Diff line number Diff line
@@ -43,7 +43,7 @@ 
			ranges;



			icoll: interrupt-controller@80000000 {

				compatible = "fsl,imx23-icoll", "fsl,mxs-icoll";

				compatible = "fsl,imx23-icoll", "fsl,icoll";

				interrupt-controller;

				#interrupt-cells = <1>;

				reg = <0x80000000 0x2000>;

arch/arm/boot/dts/imx28.dtsi

+1 −1
Original line number Diff line number Diff line
@@ -50,7 +50,7 @@ 
			ranges;



			icoll: interrupt-controller@80000000 {

				compatible = "fsl,imx28-icoll", "fsl,mxs-icoll";

				compatible = "fsl,imx28-icoll", "fsl,icoll";

				interrupt-controller;

				#interrupt-cells = <1>;

				reg = <0x80000000 0x2000>;

arch/arm/mach-mxs/icoll.c

+37 −8
Original line number Diff line number Diff line
@@ -19,7 +19,10 @@ 
#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/irq.h>

#include <linux/irqdomain.h>

#include <linux/io.h>

#include <linux/of.h>

#include <linux/of_irq.h>

#include <asm/exception.h>

#include <mach/mxs.h>

#include <mach/common.h>
@@ -33,7 +36,10 @@ 
#define BM_ICOLL_INTERRUPTn_ENABLE		0x00000004

#define BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0	0x1



#define ICOLL_NUM_IRQS		128



static void __iomem *icoll_base = MXS_IO_ADDRESS(MXS_ICOLL_BASE_ADDR);

static struct irq_domain *icoll_domain;



static void icoll_ack_irq(struct irq_data *d)

{
@@ -49,13 +55,13 @@ static void icoll_ack_irq(struct irq_data *d) 
static void icoll_mask_irq(struct irq_data *d)

{

	__raw_writel(BM_ICOLL_INTERRUPTn_ENABLE,

			icoll_base + HW_ICOLL_INTERRUPTn_CLR(d->irq));

			icoll_base + HW_ICOLL_INTERRUPTn_CLR(d->hwirq));

}



static void icoll_unmask_irq(struct irq_data *d)

{

	__raw_writel(BM_ICOLL_INTERRUPTn_ENABLE,

			icoll_base + HW_ICOLL_INTERRUPTn_SET(d->irq));

			icoll_base + HW_ICOLL_INTERRUPTn_SET(d->hwirq));

}



static struct irq_chip mxs_icoll_chip = {
@@ -72,6 +78,7 @@ asmlinkage void __exception_irq_entry icoll_handle_irq(struct pt_regs *regs) 
		irqnr = __raw_readl(icoll_base + HW_ICOLL_STAT_OFFSET);

		if (irqnr != 0x7f) {

			__raw_writel(irqnr, icoll_base + HW_ICOLL_VECTOR);

			irqnr = irq_find_mapping(icoll_domain, irqnr);

			handle_IRQ(irqnr, regs);

			continue;

		}
@@ -79,18 +86,40 @@ asmlinkage void __exception_irq_entry icoll_handle_irq(struct pt_regs *regs) 
	} while (1);

}



void __init icoll_init_irq(void)

static int icoll_irq_domain_map(struct irq_domain *d, unsigned int virq,

				irq_hw_number_t hw)

{

	int i;

	irq_set_chip_and_handler(virq, &mxs_icoll_chip, handle_level_irq);

	set_irq_flags(virq, IRQF_VALID);



	return 0;

}



static struct irq_domain_ops icoll_irq_domain_ops = {

	.map = icoll_irq_domain_map,

	.xlate = irq_domain_xlate_onecell,

};



void __init icoll_of_init(struct device_node *np,

			  struct device_node *interrupt_parent)

{

	/*

	 * Interrupt Collector reset, which initializes the priority

	 * for each irq to level 0.

	 */

	mxs_reset_block(icoll_base + HW_ICOLL_CTRL);



	for (i = 0; i < MXS_INTERNAL_IRQS; i++) {

		irq_set_chip_and_handler(i, &mxs_icoll_chip, handle_level_irq);

		set_irq_flags(i, IRQF_VALID);

	icoll_domain = irq_domain_add_linear(np, ICOLL_NUM_IRQS,

					     &icoll_irq_domain_ops, NULL);

	WARN_ON(!icoll_domain);

}



static const struct of_device_id icoll_of_match[] __initconst = {

	{.compatible = "fsl,icoll", .data = icoll_of_init},

	{ /* sentinel */ }

};



void __init icoll_init_irq(void)

{

	of_irq_init(icoll_of_match);

}

arch/arm/mach-mxs/mach-mxs.c

+2 −23
Original line number Diff line number Diff line
@@ -15,10 +15,8 @@ 
#include <linux/err.h>

#include <linux/init.h>

#include <linux/init.h>

#include <linux/irqdomain.h>

#include <linux/micrel_phy.h>

#include <linux/mxsfb.h>

#include <linux/of_irq.h>

#include <linux/of_platform.h>

#include <linux/phy.h>

#include <asm/mach/arch.h>
@@ -105,25 +103,6 @@ static struct of_dev_auxdata mxs_auxdata_lookup[] __initdata = { 
	{ /* sentinel */ }

};



static int __init mxs_icoll_add_irq_domain(struct device_node *np,

				struct device_node *interrupt_parent)

{

	irq_domain_add_legacy(np, 128, 0, 0, &irq_domain_simple_ops, NULL);



	return 0;

}



static const struct of_device_id mxs_irq_match[] __initconst = {

	{ .compatible = "fsl,mxs-icoll", .data = mxs_icoll_add_irq_domain, },

	{ /* sentinel */ }

};



static void __init mxs_dt_init_irq(void)

{

	icoll_init_irq();

	of_irq_init(mxs_irq_match);

}



static void __init imx23_timer_init(void)

{

	mx23_clocks_init();
@@ -293,7 +272,7 @@ static const char *imx28_dt_compat[] __initdata = { 


DT_MACHINE_START(IMX23, "Freescale i.MX23 (Device Tree)")

	.map_io		= mx23_map_io,

	.init_irq	= mxs_dt_init_irq,

	.init_irq	= icoll_init_irq,

	.handle_irq	= icoll_handle_irq,

	.timer		= &imx23_timer,

	.init_machine	= mxs_machine_init,
@@ -303,7 +282,7 @@ MACHINE_END 


DT_MACHINE_START(IMX28, "Freescale i.MX28 (Device Tree)")

	.map_io		= mx28_map_io,

	.init_irq	= mxs_dt_init_irq,

	.init_irq	= icoll_init_irq,

	.handle_irq	= icoll_handle_irq,

	.timer		= &imx28_timer,

	.init_machine	= mxs_machine_init,