realtek: drop platform irq driver from 5.10

To use backported irq driver, drop old irq driver from realtek target
and call irqchip_init() in setup.c.

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>

4 files changed, 7 insertions, 320 deletions

diff --git a/target/linux/realtek/files-5.10/arch/mips/include/asm/mach-rtl838x/irq.h b/target/linux/realtek/files-5.10/arch/mips/include/asm/mach-rtl838x/irq.h
deleted file mode 100644
index a4e95ab511..0000000000
--- a/target/linux/realtek/files-5.10/arch/mips/include/asm/mach-rtl838x/irq.h
+++ /dev/null
@@ -1,93 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-
-#ifndef _RTL83XX_IRQ_H_
-#define _RTL83XX_IRQ_H_
-
-#define NR_IRQS 32
-#include_next <irq.h>
-
-/* Global Interrupt Mask Register */
-#define RTL83XX_ICTL_GIMR	0x00
-/* Global Interrupt Status Register */
-#define RTL83XX_ICTL_GISR	0x04
-
-#define RTL83XX_IRQ_CPU_BASE	0
-#define RTL83XX_IRQ_CPU_NUM	8
-#define RTL83XX_IRQ_ICTL_BASE	(RTL83XX_IRQ_CPU_BASE + RTL83XX_IRQ_CPU_NUM)
-#define RTL83XX_IRQ_ICTL_NUM	32
-
-/* Cascaded interrupts */
-#define RTL83XX_ICTL1_IRQ	(RTL83XX_IRQ_CPU_BASE + 2)
-#define RTL83XX_ICTL2_IRQ	(RTL83XX_IRQ_CPU_BASE + 3)
-#define RTL83XX_ICTL3_IRQ	(RTL83XX_IRQ_CPU_BASE + 4)
-#define RTL83XX_ICTL4_IRQ	(RTL83XX_IRQ_CPU_BASE + 5)
-#define RTL83XX_ICTL5_IRQ	(RTL83XX_IRQ_CPU_BASE + 6)
-
-/* Interrupt routing register */
-#define RTL83XX_IRR0		0x08
-#define RTL83XX_IRR1		0x0c
-#define RTL83XX_IRR2		0x10
-#define RTL83XX_IRR3		0x14
-
-/* Cascade map */
-#define UART0_CASCADE		2
-#define UART1_CASCADE		1
-#define TC0_CASCADE		5
-#define TC1_CASCADE		1
-#define TC2_CASCADE		1
-#define TC3_CASCADE		1
-#define TC4_CASCADE		1
-#define OCPTO_CASCADE		1
-#define HLXTO_CASCADE		1
-#define SLXTO_CASCADE		1
-#define NIC_CASCADE		4
-#define GPIO_ABCD_CASCADE	4
-#define GPIO_EFGH_CASCADE	4
-#define RTC_CASCADE		4
-#define	SWCORE_CASCADE		3
-#define WDT_IP1_CASCADE		4
-#define WDT_IP2_CASCADE		5
-#define USB_H2_CASCADE		1
-
-/* Pack cascade map into interrupt routing registers */
-#define RTL83XX_IRR0_SETTING (\
-	(UART0_CASCADE		<< 28) | \
-	(UART1_CASCADE		<< 24) | \
-	(TC0_CASCADE		<< 20) | \
-	(TC1_CASCADE		<< 16) | \
-	(OCPTO_CASCADE		<< 12) | \
-	(HLXTO_CASCADE		<< 8)  | \
-	(SLXTO_CASCADE		<< 4)  | \
-	(NIC_CASCADE		<< 0))
-#define RTL83XX_IRR1_SETTING (\
-	(GPIO_ABCD_CASCADE	<< 28) | \
-	(GPIO_EFGH_CASCADE	<< 24) | \
-	(RTC_CASCADE		<< 20) | \
-	(SWCORE_CASCADE		<< 16))
-#define RTL83XX_IRR2_SETTING	0
-#define RTL83XX_IRR3_SETTING	0
-
-/* On the RTL8390 there is no GPIO_EFGH and RTC IRQ */
-#define RTL8390_IRR1_SETTING (\
-	(GPIO_ABCD_CASCADE	<< 28) | \
-	(SWCORE_CASCADE		<< 16))
-
-/* The RTL9300 has a different external IRQ numbering scheme */
-#define RTL9300_IRR0_SETTING (\
-	(UART1_CASCADE		<< 28) | \
-	(UART0_CASCADE		<< 24) | \
-	(USB_H2_CASCADE		<< 16) | \
-	(NIC_CASCADE		<< 0))
-#define RTL9300_IRR1_SETTING (\
-	(SWCORE_CASCADE		<< 28))
-#define RTL9300_IRR2_SETTING (\
-	(GPIO_ABCD_CASCADE	<< 20) | \
-	(TC4_CASCADE		<< 12) | \
-	(TC3_CASCADE		<< 8) | \
-	(TC2_CASCADE		<< 4) | \
-	(TC1_CASCADE		<< 0))
-#define RTL9300_IRR3_SETTING (\
-	(TC0_CASCADE		<< 28) | \
-	(WDT_IP1_CASCADE	<< 20))
-
-#endif /* _RTL83XX_IRQ_H_ */
diff --git a/target/linux/realtek/files-5.10/arch/mips/rtl838x/Makefile b/target/linux/realtek/files-5.10/arch/mips/rtl838x/Makefile
index 8212dc3f48..a9d1666d46 100644
--- a/target/linux/realtek/files-5.10/arch/mips/rtl838x/Makefile
+++ b/target/linux/realtek/files-5.10/arch/mips/rtl838x/Makefile
@@ -2,4 +2,4 @@
 # Makefile for the rtl838x specific parts of the kernel
 #
 
-obj-y := setup.o prom.o irq.o
+obj-y := setup.o prom.o
diff --git a/target/linux/realtek/files-5.10/arch/mips/rtl838x/irq.c b/target/linux/realtek/files-5.10/arch/mips/rtl838x/irq.c
deleted file mode 100644
index c0dd2f608c..0000000000
--- a/target/linux/realtek/files-5.10/arch/mips/rtl838x/irq.c
+++ /dev/null
@@ -1,226 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Realtek RTL83XX architecture specific IRQ handling
- *
- * based on the original BSP
- * Copyright (C) 2006-2012 Tony Wu (tonywu@realtek.com)
- * Copyright (C) 2020 B. Koblitz
- * Copyright (C) 2020 Bert Vermeulen <bert@biot.com>
- * Copyright (C) 2020 John Crispin <john@phrozen.org>
- */
-
-#include <linux/irqchip.h>
-#include <linux/spinlock.h>
-#include <linux/of_address.h>
-#include <asm/irq_cpu.h>
-#include <linux/of_irq.h>
-#include <asm/cevt-r4k.h>
-
-#include <mach-rtl83xx.h>
-#include "irq.h"
-
-#define REALTEK_CPU_IRQ_SHARED0		(MIPS_CPU_IRQ_BASE + 2)
-#define REALTEK_CPU_IRQ_UART		(MIPS_CPU_IRQ_BASE + 3)
-#define REALTEK_CPU_IRQ_SWITCH		(MIPS_CPU_IRQ_BASE + 4)
-#define REALTEK_CPU_IRQ_SHARED1		(MIPS_CPU_IRQ_BASE + 5)
-#define REALTEK_CPU_IRQ_EXTERNAL	(MIPS_CPU_IRQ_BASE + 6)
-#define REALTEK_CPU_IRQ_COUNTER		(MIPS_CPU_IRQ_BASE + 7)
-
-#define REG(x)				(rtl83xx_ictl_base + x)
-
-extern struct rtl83xx_soc_info soc_info;
-
-static DEFINE_RAW_SPINLOCK(irq_lock);
-static void __iomem *rtl83xx_ictl_base;
-
-static void rtl83xx_ictl_enable_irq(struct irq_data *i)
-{
-	unsigned long flags;
-	u32 value;
-
-	raw_spin_lock_irqsave(&irq_lock, flags);
-
-	value = rtl83xx_r32(REG(RTL83XX_ICTL_GIMR));
-	value |= BIT(i->hwirq);
-	rtl83xx_w32(value, REG(RTL83XX_ICTL_GIMR));
-
-	raw_spin_unlock_irqrestore(&irq_lock, flags);
-}
-
-static void rtl83xx_ictl_disable_irq(struct irq_data *i)
-{
-	unsigned long flags;
-	u32 value;
-
-	raw_spin_lock_irqsave(&irq_lock, flags);
-
-	value = rtl83xx_r32(REG(RTL83XX_ICTL_GIMR));
-	value &= ~BIT(i->hwirq);
-	rtl83xx_w32(value, REG(RTL83XX_ICTL_GIMR));
-
-	raw_spin_unlock_irqrestore(&irq_lock, flags);
-}
-
-static struct irq_chip rtl83xx_ictl_irq = {
-	.name = "RTL83xx",
-	.irq_enable = rtl83xx_ictl_enable_irq,
-	.irq_disable = rtl83xx_ictl_disable_irq,
-	.irq_ack = rtl83xx_ictl_disable_irq,
-	.irq_mask = rtl83xx_ictl_disable_irq,
-	.irq_unmask = rtl83xx_ictl_enable_irq,
-	.irq_eoi = rtl83xx_ictl_enable_irq,
-};
-
-static int intc_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
-{
-	irq_set_chip_and_handler(hw, &rtl83xx_ictl_irq, handle_level_irq);
-
-	return 0;
-}
-
-static const struct irq_domain_ops irq_domain_ops = {
-	.map = intc_map,
-	.xlate = irq_domain_xlate_onecell,
-};
-
-static void rtl838x_irq_dispatch(struct irq_desc *desc)
-{
-	unsigned int pending = rtl83xx_r32(REG(RTL83XX_ICTL_GIMR)) &
-				rtl83xx_r32(REG(RTL83XX_ICTL_GISR));
-
-	if (pending) {
-		struct irq_domain *domain = irq_desc_get_handler_data(desc);
-		generic_handle_irq(irq_find_mapping(domain, __ffs(pending)));
-	} else {
-		spurious_interrupt();
-	}
-}
-
-asmlinkage void plat_rtl83xx_irq_dispatch(void)
-{
-	unsigned int pending;
-
-	pending =  read_c0_cause() & read_c0_status() & ST0_IM;
-
-	if (pending & CAUSEF_IP7)
-		do_IRQ(REALTEK_CPU_IRQ_COUNTER);
-
-	else if (pending & CAUSEF_IP6)
-		do_IRQ(REALTEK_CPU_IRQ_EXTERNAL);
-
-	else if (pending & CAUSEF_IP5)
-		do_IRQ(REALTEK_CPU_IRQ_SHARED1);
-
-	else if (pending & CAUSEF_IP4)
-		do_IRQ(REALTEK_CPU_IRQ_SWITCH);
-
-	else if (pending & CAUSEF_IP3)
-		do_IRQ(REALTEK_CPU_IRQ_UART);
-
-	else if (pending & CAUSEF_IP2)
-		do_IRQ(REALTEK_CPU_IRQ_SHARED0);
-
-	else
-		spurious_interrupt();
-}
-
-static int icu_setup_domain(struct device_node *node)
-{
-	struct irq_domain *domain;
-
-	domain = irq_domain_add_simple(node, 32, 0,
-				       &irq_domain_ops, NULL);
-	irq_set_chained_handler_and_data(2, rtl838x_irq_dispatch, domain);
-	irq_set_chained_handler_and_data(3, rtl838x_irq_dispatch, domain);
-	irq_set_chained_handler_and_data(4, rtl838x_irq_dispatch, domain);
-	irq_set_chained_handler_and_data(5, rtl838x_irq_dispatch, domain);
-
-	rtl83xx_ictl_base = of_iomap(node, 0);
-	if (!rtl83xx_ictl_base)
-		return -EINVAL;
-
-	return 0;
-}
-
-static void __init rtl8380_icu_of_init(struct device_node *node, struct device_node *parent)
-{
-	if (icu_setup_domain(node))
-		return;
-
-	/* Disable all cascaded interrupts */
-	rtl83xx_w32(0, REG(RTL83XX_ICTL_GIMR));
-
-	/* Set up interrupt routing */
-	rtl83xx_w32(RTL83XX_IRR0_SETTING, REG(RTL83XX_IRR0));
-	rtl83xx_w32(RTL83XX_IRR1_SETTING, REG(RTL83XX_IRR1));
-	rtl83xx_w32(RTL83XX_IRR2_SETTING, REG(RTL83XX_IRR2));
-	rtl83xx_w32(RTL83XX_IRR3_SETTING, REG(RTL83XX_IRR3));
-
-	/* Clear timer interrupt */
-	write_c0_compare(0);
-
-	/* Enable all CPU interrupts */
-	write_c0_status(read_c0_status() | ST0_IM);
-
-	/* Enable timer0 and uart0 interrupts */
-	rtl83xx_w32(BIT(RTL83XX_IRQ_TC0) | BIT(RTL83XX_IRQ_UART0), REG(RTL83XX_ICTL_GIMR));
-}
-
-static void __init rtl8390_icu_of_init(struct device_node *node, struct device_node *parent)
-{
-	if (icu_setup_domain(node))
-		return;
-
-	/* Disable all cascaded interrupts */
-	rtl83xx_w32(0, REG(RTL83XX_ICTL_GIMR));
-
-	/* Set up interrupt routing */
-	rtl83xx_w32(RTL83XX_IRR0_SETTING, REG(RTL83XX_IRR0));
-	rtl83xx_w32(RTL8390_IRR1_SETTING, REG(RTL83XX_IRR1));
-	rtl83xx_w32(RTL83XX_IRR2_SETTING, REG(RTL83XX_IRR2));
-	rtl83xx_w32(RTL83XX_IRR3_SETTING, REG(RTL83XX_IRR3));
-
-	/* Clear timer interrupt */
-	write_c0_compare(0);
-
-	/* Enable all CPU interrupts */
-	write_c0_status(read_c0_status() | ST0_IM);
-
-	/* Enable timer0 and uart0 interrupts */
-	rtl83xx_w32(BIT(RTL83XX_IRQ_TC0) | BIT(RTL83XX_IRQ_UART0), REG(RTL83XX_ICTL_GIMR));
-}
-
-static void __init rtl9300_icu_of_init(struct device_node *node, struct device_node *parent)
-{
-	pr_info("RTL9300: Setting up IRQs\n");
-	if (icu_setup_domain(node))
-		return;
-
-	/* Disable all cascaded interrupts */
-	rtl83xx_w32(0, REG(RTL83XX_ICTL_GIMR));
-
-	/* Set up interrupt routing */
-	rtl83xx_w32(RTL9300_IRR0_SETTING, REG(RTL83XX_IRR0));
-	rtl83xx_w32(RTL9300_IRR1_SETTING, REG(RTL83XX_IRR1));
-	rtl83xx_w32(RTL9300_IRR2_SETTING, REG(RTL83XX_IRR2));
-	rtl83xx_w32(RTL9300_IRR3_SETTING, REG(RTL83XX_IRR3));
-
-	/* Clear timer interrupt */
-	write_c0_compare(0);
-
-	/* Enable all CPU interrupts */
-	write_c0_status(read_c0_status() | ST0_IM);
-}
-
-static struct of_device_id __initdata of_irq_ids[] = {
-	{ .compatible = "mti,cpu-interrupt-controller", .data = mips_cpu_irq_of_init },
-	{ .compatible = "realtek,rt8380-intc", .data = rtl8380_icu_of_init },
-	{ .compatible = "realtek,rt8390-intc", .data = rtl8390_icu_of_init },
-	{ .compatible = "realtek,rt9300-intc", .data = rtl9300_icu_of_init },
-	{},
-};
-
-void __init arch_init_irq(void)
-{
-	of_irq_init(of_irq_ids);
-}
diff --git a/target/linux/realtek/files-5.10/arch/mips/rtl838x/setup.c b/target/linux/realtek/files-5.10/arch/mips/rtl838x/setup.c
index ef97d485e1..752a856437 100644
--- a/target/linux/realtek/files-5.10/arch/mips/rtl838x/setup.c
+++ b/target/linux/realtek/files-5.10/arch/mips/rtl838x/setup.c
@@ -15,6 +15,7 @@
 #include <linux/clk-provider.h>
 #include <linux/delay.h>
 #include <linux/of_fdt.h>
+#include <linux/irqchip.h>
 
 #include <asm/addrspace.h>
 #include <asm/io.h>
@@ -193,3 +194,8 @@ void __init plat_time_init(void)
 
 	mips_hpt_frequency = freq / 2;
 }
+
+void __init arch_init_irq(void)
+{
+	irqchip_init();
+}