Merge tag 'intc-part2-for-v3.18' of...

Merge tag 'intc-part2-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/drivers

Merge "part 2 of omap intc changes" from Tony Lindgren:

Second part of omap intc interrupt controller changes to
move it to drivers.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

* tag 'intc-part2-for-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  irqchip: omap-intc: remove unnecessary comments
  irqchip: omap-intc: correct maximum number or MIR registers
  irqchip: omap-intc: enable TURBO idle mode
  irqchip: omap-intc: enable IP protection
  irqchip: omap-intc: remove unnecesary of_address_to_resource() call
  irqchip: omap-intc: comment style cleanup
  irqchip: omap-intc: minor improvement to omap_irq_pending()
  arm: omap: irq: move irq.c to drivers/irqchip/
  irqchip: add irq-omap-intc.h header
  arm: omap2: n8x0: move i2c devices to DT

arch/arm/boot/dts/omap2420-n810.dts

@@ -6,3 +6,10 @@ / {
 	model = "Nokia N810";
 	compatible = "nokia,n810", "nokia,n8x0", "ti,omap2420", "ti,omap2";
 };
+
+&i2c2 {
+	aic3x@18 {
+		compatible = "tlv320aic3x";
+		reg = <0x18>;
+	};
+};

arch/arm/boot/dts/omap2420-n8x0-common.dtsi

@@ -27,6 +27,12 @@ retu_mfd: retu@1 {
 
 &i2c1 {
 	clock-frequency = <400000>;
+
+	pmic@72 {
+		compatible = "menelaus";
+		reg = <0x72>;
+		interrupts = <7 IRQ_TYPE_EDGE_RISING>;
+	};
 };
 
 &i2c2 {

arch/arm/mach-omap2/Kconfig

@@ -86,6 +86,7 @@ config ARCH_OMAP2PLUS
 	select PINCTRL
 	select SOC_BUS
 	select TI_PRIV_EDMA
+	select OMAP_IRQCHIP
 	help
 	  Systems based on OMAP2, OMAP3, OMAP4 or OMAP5
 

arch/arm/mach-omap2/Makefile

@@ -10,7 +10,6 @@ obj-y := id.o io.o control.o mux.o devices.o fb.o serial.o gpmc.o timer.o pm.o \
 	 common.o gpio.o dma.o wd_timer.o display.o i2c.o hdq1w.o omap_hwmod.o \
 	 omap_device.o sram.o drm.o
 
-omap-2-3-common				= irq.o
 hwmod-common				= omap_hwmod.o omap_hwmod_reset.o \
 					  omap_hwmod_common_data.o
 clock-common				= clock.o clock_common_data.o \
@@ -20,7 +19,7 @@ secure-common				= omap-smc.o omap-secure.o
 obj-$(CONFIG_ARCH_OMAP2) += $(omap-2-3-common) $(hwmod-common)
 obj-$(CONFIG_ARCH_OMAP3) += $(omap-2-3-common) $(hwmod-common) $(secure-common)
 obj-$(CONFIG_ARCH_OMAP4) += $(hwmod-common) $(secure-common)
-obj-$(CONFIG_SOC_AM33XX) += irq.o $(hwmod-common)
+obj-$(CONFIG_SOC_AM33XX) += $(hwmod-common)
 obj-$(CONFIG_SOC_OMAP5)	 += $(hwmod-common) $(secure-common)
 obj-$(CONFIG_SOC_AM43XX) += $(hwmod-common) $(secure-common)
 obj-$(CONFIG_SOC_DRA7XX) += $(hwmod-common) $(secure-common)

arch/arm/mach-omap2/board-n8x0.c

@@ -33,6 +33,7 @@
 #include "mmc.h"
 #include "soc.h"
 #include "gpmc-onenand.h"
+#include "common-board-devices.h"
 
 #define TUSB6010_ASYNC_CS	1
 #define TUSB6010_SYNC_CS	4
@@ -568,29 +569,14 @@ static int n8x0_menelaus_late_init(struct device *dev)
 }
 #endif
 
-static struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
+struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
 	.late_init = n8x0_menelaus_late_init,
 };
 
-static struct i2c_board_info __initdata n8x0_i2c_board_info_1[] __initdata = {
-	{
-		I2C_BOARD_INFO("menelaus", 0x72),
-		.irq = 7 + OMAP_INTC_START,
-		.platform_data = &n8x0_menelaus_platform_data,
-	},
-};
-
-static struct aic3x_pdata n810_aic33_data __initdata = {
+struct aic3x_pdata n810_aic33_data __initdata = {
 	.gpio_reset = 118,
 };
 
-static struct i2c_board_info n810_i2c_board_info_2[] __initdata = {
-	{
-		I2C_BOARD_INFO("tlv320aic3x", 0x18),
-		.platform_data = &n810_aic33_data,
-	},
-};
-
 static int __init n8x0_late_initcall(void)
 {
 	if (!board_caps)
@@ -612,11 +598,5 @@ void * __init n8x0_legacy_init(void)
 	board_check_revision();
 	spi_register_board_info(n800_spi_board_info,
 				ARRAY_SIZE(n800_spi_board_info));
-	i2c_register_board_info(0, n8x0_i2c_board_info_1,
-				ARRAY_SIZE(n8x0_i2c_board_info_1));
-	if (board_is_n810())
-		i2c_register_board_info(1, n810_i2c_board_info_2,
-					ARRAY_SIZE(n810_i2c_board_info_2));
-
 	return &mmc1_data;
 }

arch/arm/mach-omap2/common-board-devices.h

 #ifndef __OMAP_COMMON_BOARD_DEVICES__
 #define __OMAP_COMMON_BOARD_DEVICES__
 
+#include <sound/tlv320aic3x.h>
+#include <linux/mfd/menelaus.h>
 #include "twl-common.h"
 
 #define NAND_BLOCK_SIZE	SZ_128K
@@ -12,4 +14,7 @@ void omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
 		       struct ads7846_platform_data *board_pdata);
 void *n8x0_legacy_init(void);
 
+extern struct menelaus_platform_data n8x0_menelaus_platform_data;
+extern struct aic3x_pdata n810_aic33_data;
+
 #endif /* __OMAP_COMMON_BOARD_DEVICES__ */

arch/arm/mach-omap2/common.h

@@ -32,6 +32,7 @@
 #include <linux/i2c/twl.h>
 #include <linux/i2c-omap.h>
 #include <linux/reboot.h>
+#include <linux/irqchip/irq-omap-intc.h>
 
 #include <asm/proc-fns.h>
 
@@ -210,15 +211,6 @@ extern struct device *omap2_get_iva_device(void);
 extern struct device *omap2_get_l3_device(void);
 extern struct device *omap4_get_dsp_device(void);
 
-void omap2_init_irq(void);
-void omap3_init_irq(void);
-void ti81xx_init_irq(void);
-extern int omap_irq_pending(void);
-void omap_intc_save_context(void);
-void omap_intc_restore_context(void);
-void omap3_intc_suspend(void);
-void omap3_intc_prepare_idle(void);
-void omap3_intc_resume_idle(void);
 void omap_gic_of_init(void);
 
 #ifdef CONFIG_CACHE_L2X0

arch/arm/mach-omap2/pdata-quirks.c

@@ -336,6 +336,8 @@ static struct pdata_init auxdata_quirks[] __initdata = {
 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
 #ifdef CONFIG_MACH_NOKIA_N8X0
 	OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
+	OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
+	OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
 #endif
 #ifdef CONFIG_ARCH_OMAP3
 	OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),

drivers/irqchip/Kconfig

@@ -75,6 +75,11 @@ config OR1K_PIC
 	bool
 	select IRQ_DOMAIN
 
+config OMAP_IRQCHIP
+	bool
+	select GENERIC_IRQ_CHIP
+	select IRQ_DOMAIN
+
 config ORION_IRQCHIP
 	bool
 	select IRQ_DOMAIN

drivers/irqchip/Makefile

@@ -13,6 +13,7 @@ obj-$(CONFIG_ARCH_MOXART)		+= irq-moxart.o
 obj-$(CONFIG_CLPS711X_IRQCHIP)		+= irq-clps711x.o
 obj-$(CONFIG_OR1K_PIC)			+= irq-or1k-pic.o
 obj-$(CONFIG_ORION_IRQCHIP)		+= irq-orion.o
+obj-$(CONFIG_OMAP_IRQCHIP)		+= irq-omap-intc.o
 obj-$(CONFIG_ARCH_SUNXI)		+= irq-sun4i.o
 obj-$(CONFIG_ARCH_SUNXI)		+= irq-sunxi-nmi.o
 obj-$(CONFIG_ARCH_SPEAR3XX)		+= spear-shirq.o

arch/arm/mach-omap2/irq.c → drivers/irqchip/irq-omap-intc.c

@@ -17,15 +17,16 @@
 #include <linux/io.h>
 
 #include <asm/exception.h>
-#include <asm/mach/irq.h>
 #include <linux/irqdomain.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
 
-#include "soc.h"
-#include "common.h"
-#include "../../drivers/irqchip/irqchip.h"
+#include "irqchip.h"
+
+/* Define these here for now until we drop all board-files */
+#define OMAP24XX_IC_BASE	0x480fe000
+#define OMAP34XX_IC_BASE	0x48200000
 
 /* selected INTC register offsets */
 
@@ -48,16 +49,13 @@
 
 #define ACTIVEIRQ_MASK		0x7f	/* omap2/3 active interrupt bits */
 #define INTCPS_NR_ILR_REGS	128
-#define INTCPS_NR_MIR_REGS	3
+#define INTCPS_NR_MIR_REGS	4
 
-/*
- * OMAP2 has a number of different interrupt controllers, each interrupt
- * controller is identified as its own "bank". Register definitions are
- * fairly consistent for each bank, but not all registers are implemented
- * for each bank.. when in doubt, consult the TRM.
- */
+#define INTC_IDLE_FUNCIDLE	(1 << 0)
+#define INTC_IDLE_TURBO		(1 << 1)
+
+#define INTC_PROTECTION_ENABLE	(1 << 0)
 
-/* Structure to save interrupt controller context */
 struct omap_intc_regs {
 	u32 sysconfig;
 	u32 protection;
@@ -73,7 +71,6 @@ static void __iomem *omap_irq_base;
 static int omap_nr_pending = 3;
 static int omap_nr_irqs = 96;
 
-/* INTC bank register get/set */
 static void intc_writel(u32 reg, u32 val)
 {
 	writel_relaxed(val, omap_irq_base + reg);
@@ -131,12 +128,14 @@ void omap3_intc_prepare_idle(void)
 	 * cf. errata ID i540 for 3430 (all revisions up to 3.1.x)
 	 */
 	intc_writel(INTC_SYSCONFIG, 0);
+	intc_writel(INTC_IDLE, INTC_IDLE_TURBO);
 }
 
 void omap3_intc_resume_idle(void)
 {
 	/* Re-enable autoidle */
 	intc_writel(INTC_SYSCONFIG, 1);
+	intc_writel(INTC_IDLE, 0);
 }
 
 /* XXX: FIQ and additional INTC support (only MPU at the moment) */
@@ -173,11 +172,10 @@ static void __init omap_irq_soft_reset(void)
 
 int omap_irq_pending(void)
 {
-	int irq;
+	int i;
 
-	for (irq = 0; irq < omap_nr_irqs; irq += 32)
-		if (intc_readl(INTC_PENDING_IRQ0 +
-					((irq >> 5) << 5)))
+	for (i = 0; i < omap_nr_pending; i++)
+		if (intc_readl(INTC_PENDING_IRQ0 + (0x20 * i)))
 			return 1;
 	return 0;
 }
@@ -290,12 +288,28 @@ static int __init omap_init_irq_legacy(u32 base)
 	return 0;
 }
 
+static void __init omap_irq_enable_protection(void)
+{
+	u32 reg;
+
+	reg = intc_readl(INTC_PROTECTION);
+	reg |= INTC_PROTECTION_ENABLE;
+	intc_writel(INTC_PROTECTION, reg);
+}
+
 static int __init omap_init_irq(u32 base, struct device_node *node)
 {
+	int ret;
+
 	if (node)
-		return omap_init_irq_of(node);
+		ret = omap_init_irq_of(node);
 	else
-		return omap_init_irq_legacy(base);
+		ret = omap_init_irq_legacy(base);
+
+	if (ret == 0)
+		omap_irq_enable_protection();
+
+	return ret;
 }
 
 static asmlinkage void __exception_irq_entry
@@ -326,9 +340,11 @@ omap_intc_handle_irq(struct pt_regs *regs)
 		}
 	} while (irqnr);
 
-	/* If an irq is masked or deasserted while active, we will
+	/*
+	 * If an irq is masked or deasserted while active, we will
 	 * keep ending up here with no irq handled. So remove it from
-	 * the INTC with an ack.*/
+	 * the INTC with an ack.
+	 */
 	if (!handled_irq)
 		omap_ack_irq(NULL);
 }
@@ -360,7 +376,6 @@ void __init ti81xx_init_irq(void)
 static int __init intc_of_init(struct device_node *node,
 			     struct device_node *parent)
 {
-	struct resource res;
 	int ret;
 
 	omap_nr_pending = 3;
@@ -369,11 +384,6 @@ static int __init intc_of_init(struct device_node *node,
 	if (WARN_ON(!node))
 		return -ENODEV;
 
-	if (of_address_to_resource(node, 0, &res)) {
-		WARN(1, "unable to get intc registers\n");
-		return -EINVAL;
-	}
-
 	if (of_device_is_compatible(node, "ti,am33xx-intc")) {
 		omap_nr_irqs = 128;
 		omap_nr_pending = 4;

include/linux/irqchip/irq-omap-intc.h

+/**
+ * irq-omap-intc.h - INTC Idle Functions
+ *
+ * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
+ *
+ * Author: Felipe Balbi <balbi@ti.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2  of
+ * the License as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __INCLUDE_LINUX_IRQCHIP_IRQ_OMAP_INTC_H
+#define __INCLUDE_LINUX_IRQCHIP_IRQ_OMAP_INTC_H
+
+void omap2_init_irq(void);
+void omap3_init_irq(void);
+void ti81xx_init_irq(void);
+
+int omap_irq_pending(void);
+void omap_intc_save_context(void);
+void omap_intc_restore_context(void);
+void omap3_intc_suspend(void);
+void omap3_intc_prepare_idle(void);
+void omap3_intc_resume_idle(void);
+
+#endif /* __INCLUDE_LINUX_IRQCHIP_IRQ_OMAP_INTC_H */