v4.19.13 snapshot.
diff --git a/arch/sh/boards/mach-x3proto/Makefile b/arch/sh/boards/mach-x3proto/Makefile
new file mode 100644
index 0000000..0cbe3d0
--- /dev/null
+++ b/arch/sh/boards/mach-x3proto/Makefile
@@ -0,0 +1,3 @@
+obj-y += setup.o ilsel.o
+
+obj-$(CONFIG_GPIOLIB) += gpio.o
diff --git a/arch/sh/boards/mach-x3proto/gpio.c b/arch/sh/boards/mach-x3proto/gpio.c
new file mode 100644
index 0000000..cea88b0
--- /dev/null
+++ b/arch/sh/boards/mach-x3proto/gpio.c
@@ -0,0 +1,139 @@
+/*
+ * arch/sh/boards/mach-x3proto/gpio.c
+ *
+ * Renesas SH-X3 Prototype Baseboard GPIO Support.
+ *
+ * Copyright (C) 2010 - 2012 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/gpio/driver.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/spinlock.h>
+#include <linux/irqdomain.h>
+#include <linux/io.h>
+#include <mach/ilsel.h>
+#include <mach/hardware.h>
+
+#define KEYCTLR 0xb81c0000
+#define KEYOUTR 0xb81c0002
+#define KEYDETR 0xb81c0004
+
+static DEFINE_SPINLOCK(x3proto_gpio_lock);
+static struct irq_domain *x3proto_irq_domain;
+
+static int x3proto_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
+{
+ unsigned long flags;
+ unsigned int data;
+
+ spin_lock_irqsave(&x3proto_gpio_lock, flags);
+ data = __raw_readw(KEYCTLR);
+ data |= (1 << gpio);
+ __raw_writew(data, KEYCTLR);
+ spin_unlock_irqrestore(&x3proto_gpio_lock, flags);
+
+ return 0;
+}
+
+static int x3proto_gpio_get(struct gpio_chip *chip, unsigned gpio)
+{
+ return !!(__raw_readw(KEYDETR) & (1 << gpio));
+}
+
+static int x3proto_gpio_to_irq(struct gpio_chip *chip, unsigned gpio)
+{
+ int virq;
+
+ if (gpio < chip->ngpio)
+ virq = irq_create_mapping(x3proto_irq_domain, gpio);
+ else
+ virq = -ENXIO;
+
+ return virq;
+}
+
+static void x3proto_gpio_irq_handler(struct irq_desc *desc)
+{
+ struct irq_data *data = irq_desc_get_irq_data(desc);
+ struct irq_chip *chip = irq_data_get_irq_chip(data);
+ unsigned long mask;
+ int pin;
+
+ chip->irq_mask_ack(data);
+
+ mask = __raw_readw(KEYDETR);
+ for_each_set_bit(pin, &mask, NR_BASEBOARD_GPIOS)
+ generic_handle_irq(irq_linear_revmap(x3proto_irq_domain, pin));
+
+ chip->irq_unmask(data);
+}
+
+struct gpio_chip x3proto_gpio_chip = {
+ .label = "x3proto-gpio",
+ .direction_input = x3proto_gpio_direction_input,
+ .get = x3proto_gpio_get,
+ .to_irq = x3proto_gpio_to_irq,
+ .base = -1,
+ .ngpio = NR_BASEBOARD_GPIOS,
+};
+
+static int x3proto_gpio_irq_map(struct irq_domain *domain, unsigned int virq,
+ irq_hw_number_t hwirq)
+{
+ irq_set_chip_and_handler_name(virq, &dummy_irq_chip, handle_simple_irq,
+ "gpio");
+
+ return 0;
+}
+
+static struct irq_domain_ops x3proto_gpio_irq_ops = {
+ .map = x3proto_gpio_irq_map,
+ .xlate = irq_domain_xlate_twocell,
+};
+
+int __init x3proto_gpio_setup(void)
+{
+ int ilsel, ret;
+
+ ilsel = ilsel_enable(ILSEL_KEY);
+ if (unlikely(ilsel < 0))
+ return ilsel;
+
+ ret = gpiochip_add_data(&x3proto_gpio_chip, NULL);
+ if (unlikely(ret))
+ goto err_gpio;
+
+ x3proto_irq_domain = irq_domain_add_linear(NULL, NR_BASEBOARD_GPIOS,
+ &x3proto_gpio_irq_ops, NULL);
+ if (unlikely(!x3proto_irq_domain))
+ goto err_irq;
+
+ pr_info("registering '%s' support, handling GPIOs %u -> %u, "
+ "bound to IRQ %u\n",
+ x3proto_gpio_chip.label, x3proto_gpio_chip.base,
+ x3proto_gpio_chip.base + x3proto_gpio_chip.ngpio,
+ ilsel);
+
+ irq_set_chained_handler(ilsel, x3proto_gpio_irq_handler);
+ irq_set_irq_wake(ilsel, 1);
+
+ return 0;
+
+err_irq:
+ gpiochip_remove(&x3proto_gpio_chip);
+ ret = 0;
+err_gpio:
+ synchronize_irq(ilsel);
+
+ ilsel_disable(ILSEL_KEY);
+
+ return ret;
+}
diff --git a/arch/sh/boards/mach-x3proto/ilsel.c b/arch/sh/boards/mach-x3proto/ilsel.c
new file mode 100644
index 0000000..95e3461
--- /dev/null
+++ b/arch/sh/boards/mach-x3proto/ilsel.c
@@ -0,0 +1,159 @@
+/*
+ * arch/sh/boards/mach-x3proto/ilsel.c
+ *
+ * Helper routines for SH-X3 proto board ILSEL.
+ *
+ * Copyright (C) 2007 - 2010 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/bitmap.h>
+#include <linux/io.h>
+#include <mach/ilsel.h>
+
+/*
+ * ILSEL is split across:
+ *
+ * ILSEL0 - 0xb8100004 [ Levels 1 - 4 ]
+ * ILSEL1 - 0xb8100006 [ Levels 5 - 8 ]
+ * ILSEL2 - 0xb8100008 [ Levels 9 - 12 ]
+ * ILSEL3 - 0xb810000a [ Levels 13 - 15 ]
+ *
+ * With each level being relative to an ilsel_source_t.
+ */
+#define ILSEL_BASE 0xb8100004
+#define ILSEL_LEVELS 15
+
+/*
+ * ILSEL level map, in descending order from the highest level down.
+ *
+ * Supported levels are 1 - 15 spread across ILSEL0 - ILSEL4, mapping
+ * directly to IRLs. As the IRQs are numbered in reverse order relative
+ * to the interrupt level, the level map is carefully managed to ensure a
+ * 1:1 mapping between the bit position and the IRQ number.
+ *
+ * This careful constructions allows ilsel_enable*() to be referenced
+ * directly for hooking up an ILSEL set and getting back an IRQ which can
+ * subsequently be used for internal accounting in the (optional) disable
+ * path.
+ */
+static unsigned long ilsel_level_map;
+
+static inline unsigned int ilsel_offset(unsigned int bit)
+{
+ return ILSEL_LEVELS - bit - 1;
+}
+
+static inline unsigned long mk_ilsel_addr(unsigned int bit)
+{
+ return ILSEL_BASE + ((ilsel_offset(bit) >> 1) & ~0x1);
+}
+
+static inline unsigned int mk_ilsel_shift(unsigned int bit)
+{
+ return (ilsel_offset(bit) & 0x3) << 2;
+}
+
+static void __ilsel_enable(ilsel_source_t set, unsigned int bit)
+{
+ unsigned int tmp, shift;
+ unsigned long addr;
+
+ pr_notice("enabling ILSEL set %d\n", set);
+
+ addr = mk_ilsel_addr(bit);
+ shift = mk_ilsel_shift(bit);
+
+ pr_debug("%s: bit#%d: addr - 0x%08lx (shift %d, set %d)\n",
+ __func__, bit, addr, shift, set);
+
+ tmp = __raw_readw(addr);
+ tmp &= ~(0xf << shift);
+ tmp |= set << shift;
+ __raw_writew(tmp, addr);
+}
+
+/**
+ * ilsel_enable - Enable an ILSEL set.
+ * @set: ILSEL source (see ilsel_source_t enum in include/asm-sh/ilsel.h).
+ *
+ * Enables a given non-aliased ILSEL source (<= ILSEL_KEY) at the highest
+ * available interrupt level. Callers should take care to order callsites
+ * noting descending interrupt levels. Aliasing FPGA and external board
+ * IRQs need to use ilsel_enable_fixed().
+ *
+ * The return value is an IRQ number that can later be taken down with
+ * ilsel_disable().
+ */
+int ilsel_enable(ilsel_source_t set)
+{
+ unsigned int bit;
+
+ if (unlikely(set > ILSEL_KEY)) {
+ pr_err("Aliased sources must use ilsel_enable_fixed()\n");
+ return -EINVAL;
+ }
+
+ do {
+ bit = find_first_zero_bit(&ilsel_level_map, ILSEL_LEVELS);
+ } while (test_and_set_bit(bit, &ilsel_level_map));
+
+ __ilsel_enable(set, bit);
+
+ return bit;
+}
+EXPORT_SYMBOL_GPL(ilsel_enable);
+
+/**
+ * ilsel_enable_fixed - Enable an ILSEL set at a fixed interrupt level
+ * @set: ILSEL source (see ilsel_source_t enum in include/asm-sh/ilsel.h).
+ * @level: Interrupt level (1 - 15)
+ *
+ * Enables a given ILSEL source at a fixed interrupt level. Necessary
+ * both for level reservation as well as for aliased sources that only
+ * exist on special ILSEL#s.
+ *
+ * Returns an IRQ number (as ilsel_enable()).
+ */
+int ilsel_enable_fixed(ilsel_source_t set, unsigned int level)
+{
+ unsigned int bit = ilsel_offset(level - 1);
+
+ if (test_and_set_bit(bit, &ilsel_level_map))
+ return -EBUSY;
+
+ __ilsel_enable(set, bit);
+
+ return bit;
+}
+EXPORT_SYMBOL_GPL(ilsel_enable_fixed);
+
+/**
+ * ilsel_disable - Disable an ILSEL set
+ * @irq: Bit position for ILSEL set value (retval from enable routines)
+ *
+ * Disable a previously enabled ILSEL set.
+ */
+void ilsel_disable(unsigned int irq)
+{
+ unsigned long addr;
+ unsigned int tmp;
+
+ pr_notice("disabling ILSEL set %d\n", irq);
+
+ addr = mk_ilsel_addr(irq);
+
+ tmp = __raw_readw(addr);
+ tmp &= ~(0xf << mk_ilsel_shift(irq));
+ __raw_writew(tmp, addr);
+
+ clear_bit(irq, &ilsel_level_map);
+}
+EXPORT_SYMBOL_GPL(ilsel_disable);
diff --git a/arch/sh/boards/mach-x3proto/setup.c b/arch/sh/boards/mach-x3proto/setup.c
new file mode 100644
index 0000000..d682e2b
--- /dev/null
+++ b/arch/sh/boards/mach-x3proto/setup.c
@@ -0,0 +1,273 @@
+/*
+ * arch/sh/boards/mach-x3proto/setup.c
+ *
+ * Renesas SH-X3 Prototype Board Support.
+ *
+ * Copyright (C) 2007 - 2010 Paul Mundt
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/io.h>
+#include <linux/smc91x.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/usb/r8a66597.h>
+#include <linux/usb/m66592.h>
+#include <linux/gpio.h>
+#include <linux/gpio_keys.h>
+#include <mach/ilsel.h>
+#include <mach/hardware.h>
+#include <asm/smp-ops.h>
+
+static struct resource heartbeat_resources[] = {
+ [0] = {
+ .start = 0xb8140020,
+ .end = 0xb8140020,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device heartbeat_device = {
+ .name = "heartbeat",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(heartbeat_resources),
+ .resource = heartbeat_resources,
+};
+
+static struct smc91x_platdata smc91x_info = {
+ .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
+};
+
+static struct resource smc91x_resources[] = {
+ [0] = {
+ .start = 0x18000300,
+ .end = 0x18000300 + 0x10 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ /* Filled in by ilsel */
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device smc91x_device = {
+ .name = "smc91x",
+ .id = -1,
+ .resource = smc91x_resources,
+ .num_resources = ARRAY_SIZE(smc91x_resources),
+ .dev = {
+ .platform_data = &smc91x_info,
+ },
+};
+
+static struct r8a66597_platdata r8a66597_data = {
+ .xtal = R8A66597_PLATDATA_XTAL_12MHZ,
+ .vif = 1,
+};
+
+static struct resource r8a66597_usb_host_resources[] = {
+ [0] = {
+ .start = 0x18040000,
+ .end = 0x18080000 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ /* Filled in by ilsel */
+ .flags = IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
+ },
+};
+
+static struct platform_device r8a66597_usb_host_device = {
+ .name = "r8a66597_hcd",
+ .id = -1,
+ .dev = {
+ .dma_mask = NULL, /* don't use dma */
+ .coherent_dma_mask = 0xffffffff,
+ .platform_data = &r8a66597_data,
+ },
+ .num_resources = ARRAY_SIZE(r8a66597_usb_host_resources),
+ .resource = r8a66597_usb_host_resources,
+};
+
+static struct m66592_platdata usbf_platdata = {
+ .xtal = M66592_PLATDATA_XTAL_24MHZ,
+ .vif = 1,
+};
+
+static struct resource m66592_usb_peripheral_resources[] = {
+ [0] = {
+ .name = "m66592_udc",
+ .start = 0x18080000,
+ .end = 0x180c0000 - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .name = "m66592_udc",
+ /* Filled in by ilsel */
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device m66592_usb_peripheral_device = {
+ .name = "m66592_udc",
+ .id = -1,
+ .dev = {
+ .dma_mask = NULL, /* don't use dma */
+ .coherent_dma_mask = 0xffffffff,
+ .platform_data = &usbf_platdata,
+ },
+ .num_resources = ARRAY_SIZE(m66592_usb_peripheral_resources),
+ .resource = m66592_usb_peripheral_resources,
+};
+
+static struct gpio_keys_button baseboard_buttons[NR_BASEBOARD_GPIOS] = {
+ {
+ .desc = "key44",
+ .code = KEY_POWER,
+ .active_low = 1,
+ .wakeup = 1,
+ }, {
+ .desc = "key43",
+ .code = KEY_SUSPEND,
+ .active_low = 1,
+ .wakeup = 1,
+ }, {
+ .desc = "key42",
+ .code = KEY_KATAKANAHIRAGANA,
+ .active_low = 1,
+ }, {
+ .desc = "key41",
+ .code = KEY_SWITCHVIDEOMODE,
+ .active_low = 1,
+ }, {
+ .desc = "key34",
+ .code = KEY_F12,
+ .active_low = 1,
+ }, {
+ .desc = "key33",
+ .code = KEY_F11,
+ .active_low = 1,
+ }, {
+ .desc = "key32",
+ .code = KEY_F10,
+ .active_low = 1,
+ }, {
+ .desc = "key31",
+ .code = KEY_F9,
+ .active_low = 1,
+ }, {
+ .desc = "key24",
+ .code = KEY_F8,
+ .active_low = 1,
+ }, {
+ .desc = "key23",
+ .code = KEY_F7,
+ .active_low = 1,
+ }, {
+ .desc = "key22",
+ .code = KEY_F6,
+ .active_low = 1,
+ }, {
+ .desc = "key21",
+ .code = KEY_F5,
+ .active_low = 1,
+ }, {
+ .desc = "key14",
+ .code = KEY_F4,
+ .active_low = 1,
+ }, {
+ .desc = "key13",
+ .code = KEY_F3,
+ .active_low = 1,
+ }, {
+ .desc = "key12",
+ .code = KEY_F2,
+ .active_low = 1,
+ }, {
+ .desc = "key11",
+ .code = KEY_F1,
+ .active_low = 1,
+ },
+};
+
+static struct gpio_keys_platform_data baseboard_buttons_data = {
+ .buttons = baseboard_buttons,
+ .nbuttons = ARRAY_SIZE(baseboard_buttons),
+};
+
+static struct platform_device baseboard_buttons_device = {
+ .name = "gpio-keys",
+ .id = -1,
+ .dev = {
+ .platform_data = &baseboard_buttons_data,
+ },
+};
+
+static struct platform_device *x3proto_devices[] __initdata = {
+ &heartbeat_device,
+ &smc91x_device,
+ &r8a66597_usb_host_device,
+ &m66592_usb_peripheral_device,
+ &baseboard_buttons_device,
+};
+
+static void __init x3proto_init_irq(void)
+{
+ plat_irq_setup_pins(IRQ_MODE_IRL3210);
+
+ /* Set ICR0.LVLMODE */
+ __raw_writel(__raw_readl(0xfe410000) | (1 << 21), 0xfe410000);
+}
+
+static int __init x3proto_devices_setup(void)
+{
+ int ret, i;
+
+ /*
+ * IRLs are only needed for ILSEL mappings, so flip over the INTC
+ * pins at a later point to enable the GPIOs to settle.
+ */
+ x3proto_init_irq();
+
+ /*
+ * Now that ILSELs are available, set up the baseboard GPIOs.
+ */
+ ret = x3proto_gpio_setup();
+ if (unlikely(ret))
+ return ret;
+
+ /*
+ * Propagate dynamic GPIOs for the baseboard button device.
+ */
+ for (i = 0; i < ARRAY_SIZE(baseboard_buttons); i++)
+ baseboard_buttons[i].gpio = x3proto_gpio_chip.base + i;
+
+ r8a66597_usb_host_resources[1].start =
+ r8a66597_usb_host_resources[1].end = ilsel_enable(ILSEL_USBH_I);
+
+ m66592_usb_peripheral_resources[1].start =
+ m66592_usb_peripheral_resources[1].end = ilsel_enable(ILSEL_USBP_I);
+
+ smc91x_resources[1].start =
+ smc91x_resources[1].end = ilsel_enable(ILSEL_LAN);
+
+ return platform_add_devices(x3proto_devices,
+ ARRAY_SIZE(x3proto_devices));
+}
+device_initcall(x3proto_devices_setup);
+
+static void __init x3proto_setup(char **cmdline_p)
+{
+ register_smp_ops(&shx3_smp_ops);
+}
+
+static struct sh_machine_vector mv_x3proto __initmv = {
+ .mv_name = "x3proto",
+ .mv_setup = x3proto_setup,
+};