Merge tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pul removal of obsolete architecture ports from Arnd Bergmann:
 "This removes the entire architecture code for blackfin, cris, frv,
  m32r, metag, mn10300, score, and tile, including the associated device
  drivers.

  I have been working with the (former) maintainers for each one to
  ensure that my interpretation was right and the code is definitely
  unused in mainline kernels. Many had fond memories of working on the
  respective ports to start with and getting them included in upstream,
  but also saw no point in keeping the port alive without any users.

  In the end, it seems that while the eight architectures are extremely
  different, they all suffered the same fate: There was one company in
  charge of an SoC line, a CPU microarchitecture and a software
  ecosystem, which was more costly than licensing newer off-the-shelf
  CPU cores from a third party (typically ARM, MIPS, or RISC-V). It
  seems that all the SoC product lines are still around, but have not
  used the custom CPU architectures for several years at this point. In
  contrast, CPU instruction sets that remain popular and have actively
  maintained kernel ports tend to all be used across multiple licensees.

  [ See the new nds32 port merged in the previous commit for the next
    generation of "one company in charge of an SoC line, a CPU
    microarchitecture and a software ecosystem"   - Linus ]

  The removal came out of a discussion that is now documented at
  https://lwn.net/Articles/748074/. Unlike the original plans, I'm not
  marking any ports as deprecated but remove them all at once after I
  made sure that they are all unused. Some architectures (notably tile,
  mn10300, and blackfin) are still being shipped in products with old
  kernels, but those products will never be updated to newer kernel
  releases.

  After this series, we still have a few architectures without mainline
  gcc support:

   - unicore32 and hexagon both have very outdated gcc releases, but the
     maintainers promised to work on providing something newer. At least
     in case of hexagon, this will only be llvm, not gcc.

   - openrisc, risc-v and nds32 are still in the process of finishing
     their support or getting it added to mainline gcc in the first
     place. They all have patched gcc-7.3 ports that work to some
     degree, but complete upstream support won't happen before gcc-8.1.
     Csky posted their first kernel patch set last week, their situation
     will be similar

  [ Palmer Dabbelt points out that RISC-V support is in mainline gcc
    since gcc-7, although gcc-7.3.0 is the recommended minimum  - Linus ]"

This really says it all:

 2498 files changed, 95 insertions(+), 467668 deletions(-)

* tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits)
  MAINTAINERS: UNICORE32: Change email account
  staging: iio: remove iio-trig-bfin-timer driver
  tty: hvc: remove tile driver
  tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers
  serial: remove tile uart driver
  serial: remove m32r_sio driver
  serial: remove blackfin drivers
  serial: remove cris/etrax uart drivers
  usb: Remove Blackfin references in USB support
  usb: isp1362: remove blackfin arch glue
  usb: musb: remove blackfin port
  usb: host: remove tilegx platform glue
  pwm: remove pwm-bfin driver
  i2c: remove bfin-twi driver
  spi: remove blackfin related host drivers
  watchdog: remove bfin_wdt driver
  can: remove bfin_can driver
  mmc: remove bfin_sdh driver
  input: misc: remove blackfin rotary driver
  input: keyboard: remove bf54x driver
  ...

3 files changed, 0 insertions, 485 deletions

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 8dbb2280538d..68d812b38be7 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -170,15 +170,6 @@ config GPIO_EP93XX
 	depends on ARCH_EP93XX
 	select GPIO_GENERIC
 
-config GPIO_ETRAXFS
-	bool "Axis ETRAX FS General I/O"
-	depends on CRIS || COMPILE_TEST
-	depends on OF_GPIO
-	select GPIO_GENERIC
-	select GPIOLIB_IRQCHIP
-	help
-	  Say yes here to support the GPIO controller on Axis ETRAX FS SoCs.
-
 config GPIO_EXAR
 	tristate "Support for GPIO pins on XR17V352/354/358"
 	depends on SERIAL_8250_EXAR
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index cccb0d40846c..db8c9d4ea2ef 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -46,7 +46,6 @@ obj-$(CONFIG_GPIO_DLN2)		+= gpio-dln2.o
 obj-$(CONFIG_GPIO_DWAPB)	+= gpio-dwapb.o
 obj-$(CONFIG_GPIO_EM)		+= gpio-em.o
 obj-$(CONFIG_GPIO_EP93XX)	+= gpio-ep93xx.o
-obj-$(CONFIG_GPIO_ETRAXFS)	+= gpio-etraxfs.o
 obj-$(CONFIG_GPIO_EXAR)		+= gpio-exar.o
 obj-$(CONFIG_GPIO_F7188X)	+= gpio-f7188x.o
 obj-$(CONFIG_GPIO_FTGPIO010)	+= gpio-ftgpio010.o
diff --git a/drivers/gpio/gpio-etraxfs.c b/drivers/gpio/gpio-etraxfs.c
deleted file mode 100644
index 94db1bf4bfdb..000000000000
--- a/drivers/gpio/gpio-etraxfs.c
+++ /dev/null
@@ -1,475 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/gpio/driver.h>
-#include <linux/of_gpio.h>
-#include <linux/io.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-
-#define ETRAX_FS_rw_pa_dout	0
-#define ETRAX_FS_r_pa_din	4
-#define ETRAX_FS_rw_pa_oe	8
-#define ETRAX_FS_rw_intr_cfg	12
-#define ETRAX_FS_rw_intr_mask	16
-#define ETRAX_FS_rw_ack_intr	20
-#define ETRAX_FS_r_intr		24
-#define ETRAX_FS_r_masked_intr	28
-#define ETRAX_FS_rw_pb_dout	32
-#define ETRAX_FS_r_pb_din	36
-#define ETRAX_FS_rw_pb_oe	40
-#define ETRAX_FS_rw_pc_dout	48
-#define ETRAX_FS_r_pc_din	52
-#define ETRAX_FS_rw_pc_oe	56
-#define ETRAX_FS_rw_pd_dout	64
-#define ETRAX_FS_r_pd_din	68
-#define ETRAX_FS_rw_pd_oe	72
-#define ETRAX_FS_rw_pe_dout	80
-#define ETRAX_FS_r_pe_din	84
-#define ETRAX_FS_rw_pe_oe	88
-
-#define ARTPEC3_r_pa_din	0
-#define ARTPEC3_rw_pa_dout	4
-#define ARTPEC3_rw_pa_oe	8
-#define ARTPEC3_r_pb_din	44
-#define ARTPEC3_rw_pb_dout	48
-#define ARTPEC3_rw_pb_oe	52
-#define ARTPEC3_r_pc_din	88
-#define ARTPEC3_rw_pc_dout	92
-#define ARTPEC3_rw_pc_oe	96
-#define ARTPEC3_r_pd_din	116
-#define ARTPEC3_rw_intr_cfg	120
-#define ARTPEC3_rw_intr_pins	124
-#define ARTPEC3_rw_intr_mask	128
-#define ARTPEC3_rw_ack_intr	132
-#define ARTPEC3_r_masked_intr	140
-
-#define GIO_CFG_OFF		0
-#define GIO_CFG_HI		1
-#define GIO_CFG_LO		2
-#define GIO_CFG_SET		3
-#define GIO_CFG_POSEDGE		5
-#define GIO_CFG_NEGEDGE		6
-#define GIO_CFG_ANYEDGE		7
-
-struct etraxfs_gpio_info;
-
-struct etraxfs_gpio_block {
-	raw_spinlock_t lock;
-	u32 mask;
-	u32 cfg;
-	u32 pins;
-	unsigned int group[8];
-
-	void __iomem *regs;
-	const struct etraxfs_gpio_info *info;
-};
-
-struct etraxfs_gpio_chip {
-	struct gpio_chip gc;
-	struct etraxfs_gpio_block *block;
-};
-
-struct etraxfs_gpio_port {
-	const char *label;
-	unsigned int oe;
-	unsigned int dout;
-	unsigned int din;
-	unsigned int ngpio;
-};
-
-struct etraxfs_gpio_info {
-	unsigned int num_ports;
-	const struct etraxfs_gpio_port *ports;
-
-	unsigned int rw_ack_intr;
-	unsigned int rw_intr_mask;
-	unsigned int rw_intr_cfg;
-	unsigned int rw_intr_pins;
-	unsigned int r_masked_intr;
-};
-
-static const struct etraxfs_gpio_port etraxfs_gpio_etraxfs_ports[] = {
-	{
-		.label	= "A",
-		.ngpio	= 8,
-		.oe	= ETRAX_FS_rw_pa_oe,
-		.dout	= ETRAX_FS_rw_pa_dout,
-		.din	= ETRAX_FS_r_pa_din,
-	},
-	{
-		.label	= "B",
-		.ngpio	= 18,
-		.oe	= ETRAX_FS_rw_pb_oe,
-		.dout	= ETRAX_FS_rw_pb_dout,
-		.din	= ETRAX_FS_r_pb_din,
-	},
-	{
-		.label	= "C",
-		.ngpio	= 18,
-		.oe	= ETRAX_FS_rw_pc_oe,
-		.dout	= ETRAX_FS_rw_pc_dout,
-		.din	= ETRAX_FS_r_pc_din,
-	},
-	{
-		.label	= "D",
-		.ngpio	= 18,
-		.oe	= ETRAX_FS_rw_pd_oe,
-		.dout	= ETRAX_FS_rw_pd_dout,
-		.din	= ETRAX_FS_r_pd_din,
-	},
-	{
-		.label	= "E",
-		.ngpio	= 18,
-		.oe	= ETRAX_FS_rw_pe_oe,
-		.dout	= ETRAX_FS_rw_pe_dout,
-		.din	= ETRAX_FS_r_pe_din,
-	},
-};
-
-static const struct etraxfs_gpio_info etraxfs_gpio_etraxfs = {
-	.num_ports = ARRAY_SIZE(etraxfs_gpio_etraxfs_ports),
-	.ports = etraxfs_gpio_etraxfs_ports,
-	.rw_ack_intr	= ETRAX_FS_rw_ack_intr,
-	.rw_intr_mask	= ETRAX_FS_rw_intr_mask,
-	.rw_intr_cfg	= ETRAX_FS_rw_intr_cfg,
-	.r_masked_intr	= ETRAX_FS_r_masked_intr,
-};
-
-static const struct etraxfs_gpio_port etraxfs_gpio_artpec3_ports[] = {
-	{
-		.label	= "A",
-		.ngpio	= 32,
-		.oe	= ARTPEC3_rw_pa_oe,
-		.dout	= ARTPEC3_rw_pa_dout,
-		.din	= ARTPEC3_r_pa_din,
-	},
-	{
-		.label	= "B",
-		.ngpio	= 32,
-		.oe	= ARTPEC3_rw_pb_oe,
-		.dout	= ARTPEC3_rw_pb_dout,
-		.din	= ARTPEC3_r_pb_din,
-	},
-	{
-		.label	= "C",
-		.ngpio	= 16,
-		.oe	= ARTPEC3_rw_pc_oe,
-		.dout	= ARTPEC3_rw_pc_dout,
-		.din	= ARTPEC3_r_pc_din,
-	},
-	{
-		.label	= "D",
-		.ngpio	= 32,
-		.din	= ARTPEC3_r_pd_din,
-	},
-};
-
-static const struct etraxfs_gpio_info etraxfs_gpio_artpec3 = {
-	.num_ports = ARRAY_SIZE(etraxfs_gpio_artpec3_ports),
-	.ports = etraxfs_gpio_artpec3_ports,
-	.rw_ack_intr	= ARTPEC3_rw_ack_intr,
-	.rw_intr_mask	= ARTPEC3_rw_intr_mask,
-	.rw_intr_cfg	= ARTPEC3_rw_intr_cfg,
-	.r_masked_intr	= ARTPEC3_r_masked_intr,
-	.rw_intr_pins	= ARTPEC3_rw_intr_pins,
-};
-
-static unsigned int etraxfs_gpio_chip_to_port(struct gpio_chip *gc)
-{
-	return gc->label[0] - 'A';
-}
-
-static int etraxfs_gpio_of_xlate(struct gpio_chip *gc,
-			       const struct of_phandle_args *gpiospec,
-			       u32 *flags)
-{
-	/*
-	 * Port numbers are A to E, and the properties are integers, so we
-	 * specify them as 0xA - 0xE.
-	 */
-	if (etraxfs_gpio_chip_to_port(gc) + 0xA != gpiospec->args[2])
-		return -EINVAL;
-
-	return of_gpio_simple_xlate(gc, gpiospec, flags);
-}
-
-static const struct of_device_id etraxfs_gpio_of_table[] = {
-	{
-		.compatible = "axis,etraxfs-gio",
-		.data = &etraxfs_gpio_etraxfs,
-	},
-	{
-		.compatible = "axis,artpec3-gio",
-		.data = &etraxfs_gpio_artpec3,
-	},
-	{},
-};
-
-static unsigned int etraxfs_gpio_to_group_irq(unsigned int gpio)
-{
-	return gpio % 8;
-}
-
-static unsigned int etraxfs_gpio_to_group_pin(struct etraxfs_gpio_chip *chip,
-					      unsigned int gpio)
-{
-	return 4 * etraxfs_gpio_chip_to_port(&chip->gc) + gpio / 8;
-}
-
-static void etraxfs_gpio_irq_ack(struct irq_data *d)
-{
-	struct etraxfs_gpio_chip *chip =
-		gpiochip_get_data(irq_data_get_irq_chip_data(d));
-	struct etraxfs_gpio_block *block = chip->block;
-	unsigned int grpirq = etraxfs_gpio_to_group_irq(d->hwirq);
-
-	writel(BIT(grpirq), block->regs + block->info->rw_ack_intr);
-}
-
-static void etraxfs_gpio_irq_mask(struct irq_data *d)
-{
-	struct etraxfs_gpio_chip *chip =
-		gpiochip_get_data(irq_data_get_irq_chip_data(d));
-	struct etraxfs_gpio_block *block = chip->block;
-	unsigned int grpirq = etraxfs_gpio_to_group_irq(d->hwirq);
-
-	raw_spin_lock(&block->lock);
-	block->mask &= ~BIT(grpirq);
-	writel(block->mask, block->regs + block->info->rw_intr_mask);
-	raw_spin_unlock(&block->lock);
-}
-
-static void etraxfs_gpio_irq_unmask(struct irq_data *d)
-{
-	struct etraxfs_gpio_chip *chip =
-		gpiochip_get_data(irq_data_get_irq_chip_data(d));
-	struct etraxfs_gpio_block *block = chip->block;
-	unsigned int grpirq = etraxfs_gpio_to_group_irq(d->hwirq);
-
-	raw_spin_lock(&block->lock);
-	block->mask |= BIT(grpirq);
-	writel(block->mask, block->regs + block->info->rw_intr_mask);
-	raw_spin_unlock(&block->lock);
-}
-
-static int etraxfs_gpio_irq_set_type(struct irq_data *d, u32 type)
-{
-	struct etraxfs_gpio_chip *chip =
-		gpiochip_get_data(irq_data_get_irq_chip_data(d));
-	struct etraxfs_gpio_block *block = chip->block;
-	unsigned int grpirq = etraxfs_gpio_to_group_irq(d->hwirq);
-	u32 cfg;
-
-	switch (type) {
-	case IRQ_TYPE_EDGE_RISING:
-		cfg = GIO_CFG_POSEDGE;
-		break;
-	case IRQ_TYPE_EDGE_FALLING:
-		cfg = GIO_CFG_NEGEDGE;
-		break;
-	case IRQ_TYPE_EDGE_BOTH:
-		cfg = GIO_CFG_ANYEDGE;
-		break;
-	case IRQ_TYPE_LEVEL_LOW:
-		cfg = GIO_CFG_LO;
-		break;
-	case IRQ_TYPE_LEVEL_HIGH:
-		cfg = GIO_CFG_HI;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	raw_spin_lock(&block->lock);
-	block->cfg &= ~(0x7 << (grpirq * 3));
-	block->cfg |= (cfg << (grpirq * 3));
-	writel(block->cfg, block->regs + block->info->rw_intr_cfg);
-	raw_spin_unlock(&block->lock);
-
-	return 0;
-}
-
-static int etraxfs_gpio_irq_request_resources(struct irq_data *d)
-{
-	struct etraxfs_gpio_chip *chip =
-		gpiochip_get_data(irq_data_get_irq_chip_data(d));
-	struct etraxfs_gpio_block *block = chip->block;
-	unsigned int grpirq = etraxfs_gpio_to_group_irq(d->hwirq);
-	int ret = -EBUSY;
-
-	raw_spin_lock(&block->lock);
-	if (block->group[grpirq])
-		goto out;
-
-	ret = gpiochip_lock_as_irq(&chip->gc, d->hwirq);
-	if (ret)
-		goto out;
-
-	block->group[grpirq] = d->irq;
-	if (block->info->rw_intr_pins) {
-		unsigned int pin = etraxfs_gpio_to_group_pin(chip, d->hwirq);
-
-		block->pins &= ~(0xf << (grpirq * 4));
-		block->pins |= (pin << (grpirq * 4));
-
-		writel(block->pins, block->regs + block->info->rw_intr_pins);
-	}
-
-out:
-	raw_spin_unlock(&block->lock);
-	return ret;
-}
-
-static void etraxfs_gpio_irq_release_resources(struct irq_data *d)
-{
-	struct etraxfs_gpio_chip *chip =
-		gpiochip_get_data(irq_data_get_irq_chip_data(d));
-	struct etraxfs_gpio_block *block = chip->block;
-	unsigned int grpirq = etraxfs_gpio_to_group_irq(d->hwirq);
-
-	raw_spin_lock(&block->lock);
-	block->group[grpirq] = 0;
-	gpiochip_unlock_as_irq(&chip->gc, d->hwirq);
-	raw_spin_unlock(&block->lock);
-}
-
-static struct irq_chip etraxfs_gpio_irq_chip = {
-	.name		= "gpio-etraxfs",
-	.irq_ack	= etraxfs_gpio_irq_ack,
-	.irq_mask	= etraxfs_gpio_irq_mask,
-	.irq_unmask	= etraxfs_gpio_irq_unmask,
-	.irq_set_type	= etraxfs_gpio_irq_set_type,
-	.irq_request_resources = etraxfs_gpio_irq_request_resources,
-	.irq_release_resources = etraxfs_gpio_irq_release_resources,
-};
-
-static irqreturn_t etraxfs_gpio_interrupt(int irq, void *dev_id)
-{
-	struct etraxfs_gpio_block *block = dev_id;
-	unsigned long intr = readl(block->regs + block->info->r_masked_intr);
-	int bit;
-
-	for_each_set_bit(bit, &intr, 8)
-		generic_handle_irq(block->group[bit]);
-
-	return IRQ_RETVAL(intr & 0xff);
-}
-
-static int etraxfs_gpio_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	const struct etraxfs_gpio_info *info;
-	const struct of_device_id *match;
-	struct etraxfs_gpio_block *block;
-	struct etraxfs_gpio_chip *chips;
-	struct resource *res, *irq;
-	bool allportsirq = false;
-	void __iomem *regs;
-	int ret;
-	int i;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	regs = devm_ioremap_resource(dev, res);
-	if (IS_ERR(regs))
-		return PTR_ERR(regs);
-
-	match = of_match_node(etraxfs_gpio_of_table, dev->of_node);
-	if (!match)
-		return -EINVAL;
-
-	info = match->data;
-
-	chips = devm_kzalloc(dev, sizeof(*chips) * info->num_ports, GFP_KERNEL);
-	if (!chips)
-		return -ENOMEM;
-
-	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!irq)
-		return -EINVAL;
-
-	block = devm_kzalloc(dev, sizeof(*block), GFP_KERNEL);
-	if (!block)
-		return -ENOMEM;
-
-	raw_spin_lock_init(&block->lock);
-
-	block->regs = regs;
-	block->info = info;
-
-	writel(0, block->regs + info->rw_intr_mask);
-	writel(0, block->regs + info->rw_intr_cfg);
-	if (info->rw_intr_pins) {
-		allportsirq = true;
-		writel(0, block->regs + info->rw_intr_pins);
-	}
-
-	ret = devm_request_irq(dev, irq->start, etraxfs_gpio_interrupt,
-			       IRQF_SHARED, dev_name(dev), block);
-	if (ret) {
-		dev_err(dev, "Unable to request irq %d\n", ret);
-		return ret;
-	}
-
-	for (i = 0; i < info->num_ports; i++) {
-		struct etraxfs_gpio_chip *chip = &chips[i];
-		struct gpio_chip *gc = &chip->gc;
-		const struct etraxfs_gpio_port *port = &info->ports[i];
-		unsigned long flags = BGPIOF_READ_OUTPUT_REG_SET;
-		void __iomem *dat = regs + port->din;
-		void __iomem *set = regs + port->dout;
-		void __iomem *dirout = regs + port->oe;
-
-		chip->block = block;
-
-		if (dirout == set) {
-			dirout = set = NULL;
-			flags = BGPIOF_NO_OUTPUT;
-		}
-
-		ret = bgpio_init(gc, dev, 4,
-				 dat, set, NULL, dirout, NULL,
-				 flags);
-		if (ret) {
-			dev_err(dev, "Unable to init port %s\n",
-				port->label);
-			continue;
-		}
-
-		gc->ngpio = port->ngpio;
-		gc->label = port->label;
-
-		gc->of_node = dev->of_node;
-		gc->of_gpio_n_cells = 3;
-		gc->of_xlate = etraxfs_gpio_of_xlate;
-
-		ret = gpiochip_add_data(gc, chip);
-		if (ret) {
-			dev_err(dev, "Unable to register port %s\n",
-				gc->label);
-			continue;
-		}
-
-		if (i > 0 && !allportsirq)
-			continue;
-
-		ret = gpiochip_irqchip_add(gc, &etraxfs_gpio_irq_chip, 0,
-					   handle_level_irq, IRQ_TYPE_NONE);
-		if (ret) {
-			dev_err(dev, "Unable to add irqchip to port %s\n",
-				gc->label);
-		}
-	}
-
-	return 0;
-}
-
-static struct platform_driver etraxfs_gpio_driver = {
-	.driver = {
-		.name		= "etraxfs-gpio",
-		.of_match_table = of_match_ptr(etraxfs_gpio_of_table),
-	},
-	.probe	= etraxfs_gpio_probe,
-};
-
-builtin_platform_driver(etraxfs_gpio_driver);