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   - unicore32 and hexagon both have very outdated gcc releases, but the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
  ...

6 files changed, 1 insertions, 472 deletions

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 4fcfb3084b36..b85822f0c874 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -360,6 +360,7 @@ config USB_ISP116X_HCD
 config USB_ISP1362_HCD
 	tristate "ISP1362 HCD support"
 	depends on HAS_IOMEM
+	depends on COMPILE_TEST # nothing uses this
 	---help---
 	  Supports the Philips ISP1362 chip as a host controller
 
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 7f0737449df7..d927adf3afcd 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1275,11 +1275,6 @@ MODULE_LICENSE ("GPL");
 #define XILINX_OF_PLATFORM_DRIVER	ehci_hcd_xilinx_of_driver
 #endif
 
-#ifdef CONFIG_TILE_USB
-#include "ehci-tilegx.c"
-#define	PLATFORM_DRIVER		ehci_hcd_tilegx_driver
-#endif
-
 #ifdef CONFIG_USB_EHCI_HCD_PMC_MSP
 #include "ehci-pmcmsp.c"
 #define	PLATFORM_DRIVER		ehci_hcd_msp_driver
diff --git a/drivers/usb/host/ehci-tilegx.c b/drivers/usb/host/ehci-tilegx.c
deleted file mode 100644
index 610ed437ed2c..000000000000
--- a/drivers/usb/host/ehci-tilegx.c
+++ /dev/null
@@ -1,207 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright 2012 Tilera Corporation. All Rights Reserved.
- */
-
-/*
- * Tilera TILE-Gx USB EHCI host controller driver.
- */
-
-#include <linux/irq.h>
-#include <linux/platform_device.h>
-#include <linux/usb/tilegx.h>
-#include <linux/usb.h>
-
-#include <asm/homecache.h>
-
-#include <gxio/iorpc_usb_host.h>
-#include <gxio/usb_host.h>
-
-static void tilegx_start_ehc(void)
-{
-}
-
-static void tilegx_stop_ehc(void)
-{
-}
-
-static int tilegx_ehci_setup(struct usb_hcd *hcd)
-{
-	int ret = ehci_init(hcd);
-
-	/*
-	 * Some drivers do:
-	 *
-	 *   struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-	 *   ehci->need_io_watchdog = 0;
-	 *
-	 * here, but since this is a new driver we're going to leave the
-	 * watchdog enabled.  Later we may try to turn it off and see
-	 * whether we run into any problems.
-	 */
-
-	return ret;
-}
-
-static const struct hc_driver ehci_tilegx_hc_driver = {
-	.description		= hcd_name,
-	.product_desc		= "Tile-Gx EHCI",
-	.hcd_priv_size		= sizeof(struct ehci_hcd),
-
-	/*
-	 * Generic hardware linkage.
-	 */
-	.irq			= ehci_irq,
-	.flags			= HCD_MEMORY | HCD_USB2 | HCD_BH,
-
-	/*
-	 * Basic lifecycle operations.
-	 */
-	.reset			= tilegx_ehci_setup,
-	.start			= ehci_run,
-	.stop			= ehci_stop,
-	.shutdown		= ehci_shutdown,
-
-	/*
-	 * Managing I/O requests and associated device resources.
-	 */
-	.urb_enqueue		= ehci_urb_enqueue,
-	.urb_dequeue		= ehci_urb_dequeue,
-	.endpoint_disable	= ehci_endpoint_disable,
-	.endpoint_reset		= ehci_endpoint_reset,
-
-	/*
-	 * Scheduling support.
-	 */
-	.get_frame_number	= ehci_get_frame,
-
-	/*
-	 * Root hub support.
-	 */
-	.hub_status_data	= ehci_hub_status_data,
-	.hub_control		= ehci_hub_control,
-	.bus_suspend		= ehci_bus_suspend,
-	.bus_resume		= ehci_bus_resume,
-	.relinquish_port	= ehci_relinquish_port,
-	.port_handed_over	= ehci_port_handed_over,
-
-	.clear_tt_buffer_complete	= ehci_clear_tt_buffer_complete,
-};
-
-static int ehci_hcd_tilegx_drv_probe(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd;
-	struct ehci_hcd *ehci;
-	struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
-	pte_t pte = { 0 };
-	int my_cpu = smp_processor_id();
-	int ret;
-
-	if (usb_disabled())
-		return -ENODEV;
-
-	/*
-	 * Try to initialize our GXIO context; if we can't, the device
-	 * doesn't exist.
-	 */
-	if (gxio_usb_host_init(&pdata->usb_ctx, pdata->dev_index, 1) != 0)
-		return -ENXIO;
-
-	hcd = usb_create_hcd(&ehci_tilegx_hc_driver, &pdev->dev,
-			     dev_name(&pdev->dev));
-	if (!hcd) {
-          ret = -ENOMEM;
-          goto err_hcd;
-        }
-
-	/*
-	 * We don't use rsrc_start to map in our registers, but seems like
-	 * we ought to set it to something, so we use the register VA.
-	 */
-	hcd->rsrc_start =
-		(ulong) gxio_usb_host_get_reg_start(&pdata->usb_ctx);
-	hcd->rsrc_len = gxio_usb_host_get_reg_len(&pdata->usb_ctx);
-	hcd->regs = gxio_usb_host_get_reg_start(&pdata->usb_ctx);
-
-	tilegx_start_ehc();
-
-	ehci = hcd_to_ehci(hcd);
-	ehci->caps = hcd->regs;
-	ehci->regs =
-		hcd->regs + HC_LENGTH(ehci, readl(&ehci->caps->hc_capbase));
-	/* cache this readonly data; minimize chip reads */
-	ehci->hcs_params = readl(&ehci->caps->hcs_params);
-
-	/* Create our IRQs and register them. */
-	pdata->irq = irq_alloc_hwirq(-1);
-	if (!pdata->irq) {
-		ret = -ENXIO;
-		goto err_no_irq;
-	}
-
-	tile_irq_activate(pdata->irq, TILE_IRQ_PERCPU);
-
-	/* Configure interrupts. */
-	ret = gxio_usb_host_cfg_interrupt(&pdata->usb_ctx,
-					  cpu_x(my_cpu), cpu_y(my_cpu),
-					  KERNEL_PL, pdata->irq);
-	if (ret) {
-		ret = -ENXIO;
-		goto err_have_irq;
-	}
-
-	/* Register all of our memory. */
-	pte = pte_set_home(pte, PAGE_HOME_HASH);
-	ret = gxio_usb_host_register_client_memory(&pdata->usb_ctx, pte, 0);
-	if (ret) {
-		ret = -ENXIO;
-		goto err_have_irq;
-	}
-
-	ret = usb_add_hcd(hcd, pdata->irq, IRQF_SHARED);
-	if (ret == 0) {
-		platform_set_drvdata(pdev, hcd);
-		device_wakeup_enable(hcd->self.controller);
-		return ret;
-	}
-
-err_have_irq:
-	irq_free_hwirq(pdata->irq);
-err_no_irq:
-	tilegx_stop_ehc();
-	usb_put_hcd(hcd);
-err_hcd:
-	gxio_usb_host_destroy(&pdata->usb_ctx);
-	return ret;
-}
-
-static int ehci_hcd_tilegx_drv_remove(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd = platform_get_drvdata(pdev);
-	struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
-
-	usb_remove_hcd(hcd);
-	usb_put_hcd(hcd);
-	tilegx_stop_ehc();
-	gxio_usb_host_destroy(&pdata->usb_ctx);
-	irq_free_hwirq(pdata->irq);
-
-	return 0;
-}
-
-static void ehci_hcd_tilegx_drv_shutdown(struct platform_device *pdev)
-{
-	usb_hcd_platform_shutdown(pdev);
-	ehci_hcd_tilegx_drv_remove(pdev);
-}
-
-static struct platform_driver ehci_hcd_tilegx_driver = {
-	.probe		= ehci_hcd_tilegx_drv_probe,
-	.remove		= ehci_hcd_tilegx_drv_remove,
-	.shutdown	= ehci_hcd_tilegx_drv_shutdown,
-	.driver = {
-		.name	= "tilegx-ehci",
-	}
-};
-
-MODULE_ALIAS("platform:tilegx-ehci");
diff --git a/drivers/usb/host/isp1362.h b/drivers/usb/host/isp1362.h
index da79e36ced89..650240846ee2 100644
--- a/drivers/usb/host/isp1362.h
+++ b/drivers/usb/host/isp1362.h
@@ -6,49 +6,6 @@
  */
 
 /* ------------------------------------------------------------------------- */
-/*
- * Platform specific compile time options
- */
-#if defined(CONFIG_BLACKFIN)
-
-#include <linux/io.h>
-#define USE_32BIT		0
-#define MAX_ROOT_PORTS		2
-#define USE_PLATFORM_DELAY	0
-#define USE_NDELAY		1
-
-#define DUMMY_DELAY_ACCESS \
-	do { \
-		bfin_read16(ASYNC_BANK0_BASE); \
-		bfin_read16(ASYNC_BANK0_BASE); \
-		bfin_read16(ASYNC_BANK0_BASE); \
-	} while (0)
-
-#undef insw
-#undef outsw
-
-#define insw  delayed_insw
-#define outsw  delayed_outsw
-
-static inline void delayed_outsw(unsigned int addr, void *buf, int len)
-{
-	unsigned short *bp = (unsigned short *)buf;
-	while (len--) {
-		DUMMY_DELAY_ACCESS;
-		outw(*bp++, addr);
-	}
-}
-
-static inline void delayed_insw(unsigned int addr, void *buf, int len)
-{
-	unsigned short *bp = (unsigned short *)buf;
-	while (len--) {
-		DUMMY_DELAY_ACCESS;
-		*bp++ = inw(addr);
-	}
-}
-
-#else
 
 #define MAX_ROOT_PORTS		2
 
@@ -60,9 +17,6 @@ static inline void delayed_insw(unsigned int addr, void *buf, int len)
 
 #define DUMMY_DELAY_ACCESS do {} while (0)
 
-#endif
-
-
 /* ------------------------------------------------------------------------- */
 
 #define USB_RESET_WIDTH			50
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index d088c340e4d0..4806e0f9e8d4 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1245,11 +1245,6 @@ MODULE_LICENSE ("GPL");
 #define TMIO_OHCI_DRIVER	ohci_hcd_tmio_driver
 #endif
 
-#ifdef CONFIG_TILE_USB
-#include "ohci-tilegx.c"
-#define PLATFORM_DRIVER		ohci_hcd_tilegx_driver
-#endif
-
 static int __init ohci_hcd_mod_init(void)
 {
 	int retval = 0;
@@ -1274,12 +1269,6 @@ static int __init ohci_hcd_mod_init(void)
 		goto error_ps3;
 #endif
 
-#ifdef PLATFORM_DRIVER
-	retval = platform_driver_register(&PLATFORM_DRIVER);
-	if (retval < 0)
-		goto error_platform;
-#endif
-
 #ifdef OF_PLATFORM_DRIVER
 	retval = platform_driver_register(&OF_PLATFORM_DRIVER);
 	if (retval < 0)
@@ -1323,10 +1312,6 @@ static int __init ohci_hcd_mod_init(void)
 	platform_driver_unregister(&OF_PLATFORM_DRIVER);
  error_of_platform:
 #endif
-#ifdef PLATFORM_DRIVER
-	platform_driver_unregister(&PLATFORM_DRIVER);
- error_platform:
-#endif
 #ifdef PS3_SYSTEM_BUS_DRIVER
 	ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
  error_ps3:
@@ -1354,9 +1339,6 @@ static void __exit ohci_hcd_mod_exit(void)
 #ifdef OF_PLATFORM_DRIVER
 	platform_driver_unregister(&OF_PLATFORM_DRIVER);
 #endif
-#ifdef PLATFORM_DRIVER
-	platform_driver_unregister(&PLATFORM_DRIVER);
-#endif
 #ifdef PS3_SYSTEM_BUS_DRIVER
 	ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
 #endif
diff --git a/drivers/usb/host/ohci-tilegx.c b/drivers/usb/host/ohci-tilegx.c
deleted file mode 100644
index d21ca3ce9a30..000000000000
--- a/drivers/usb/host/ohci-tilegx.c
+++ /dev/null
@@ -1,196 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright 2012 Tilera Corporation. All Rights Reserved.
- */
-
-/*
- * Tilera TILE-Gx USB OHCI host controller driver.
- */
-
-#include <linux/irq.h>
-#include <linux/platform_device.h>
-#include <linux/usb/tilegx.h>
-#include <linux/usb.h>
-
-#include <asm/homecache.h>
-
-#include <gxio/iorpc_usb_host.h>
-#include <gxio/usb_host.h>
-
-static void tilegx_start_ohc(void)
-{
-}
-
-static void tilegx_stop_ohc(void)
-{
-}
-
-static int tilegx_ohci_start(struct usb_hcd *hcd)
-{
-	struct ohci_hcd *ohci = hcd_to_ohci(hcd);
-	int ret;
-
-	ret = ohci_init(ohci);
-	if (ret < 0)
-		return ret;
-
-	ret = ohci_run(ohci);
-	if (ret < 0) {
-		dev_err(hcd->self.controller, "can't start %s\n",
-			hcd->self.bus_name);
-		ohci_stop(hcd);
-		return ret;
-	}
-
-	return 0;
-}
-
-static const struct hc_driver ohci_tilegx_hc_driver = {
-	.description		= hcd_name,
-	.product_desc		= "Tile-Gx OHCI",
-	.hcd_priv_size		= sizeof(struct ohci_hcd),
-
-	/*
-	 * Generic hardware linkage.
-	 */
-	.irq			= ohci_irq,
-	.flags			= HCD_MEMORY | HCD_LOCAL_MEM | HCD_USB11,
-
-	/*
-	 * Basic lifecycle operations.
-	 */
-	.start			= tilegx_ohci_start,
-	.stop			= ohci_stop,
-	.shutdown		= ohci_shutdown,
-
-	/*
-	 * Managing I/O requests and associated device resources.
-	 */
-	.urb_enqueue		= ohci_urb_enqueue,
-	.urb_dequeue		= ohci_urb_dequeue,
-	.endpoint_disable	= ohci_endpoint_disable,
-
-	/*
-	 * Scheduling support.
-	 */
-	.get_frame_number	= ohci_get_frame,
-
-	/*
-	 * Root hub support.
-	 */
-	.hub_status_data	= ohci_hub_status_data,
-	.hub_control		= ohci_hub_control,
-	.start_port_reset	= ohci_start_port_reset,
-};
-
-static int ohci_hcd_tilegx_drv_probe(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd;
-	struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
-	pte_t pte = { 0 };
-	int my_cpu = smp_processor_id();
-	int ret;
-
-	if (usb_disabled())
-		return -ENODEV;
-
-	/*
-	 * Try to initialize our GXIO context; if we can't, the device
-	 * doesn't exist.
-	 */
-	if (gxio_usb_host_init(&pdata->usb_ctx, pdata->dev_index, 0) != 0)
-		return -ENXIO;
-
-	hcd = usb_create_hcd(&ohci_tilegx_hc_driver, &pdev->dev,
-			     dev_name(&pdev->dev));
-	if (!hcd) {
-		ret = -ENOMEM;
-		goto err_hcd;
-	}
-
-	/*
-	 * We don't use rsrc_start to map in our registers, but seems like
-	 * we ought to set it to something, so we use the register VA.
-	 */
-	hcd->rsrc_start =
-		(ulong) gxio_usb_host_get_reg_start(&pdata->usb_ctx);
-	hcd->rsrc_len = gxio_usb_host_get_reg_len(&pdata->usb_ctx);
-	hcd->regs = gxio_usb_host_get_reg_start(&pdata->usb_ctx);
-
-	tilegx_start_ohc();
-
-	/* Create our IRQs and register them. */
-	pdata->irq = irq_alloc_hwirq(-1);
-	if (!pdata->irq) {
-		ret = -ENXIO;
-		goto err_no_irq;
-	}
-
-	tile_irq_activate(pdata->irq, TILE_IRQ_PERCPU);
-
-	/* Configure interrupts. */
-	ret = gxio_usb_host_cfg_interrupt(&pdata->usb_ctx,
-					  cpu_x(my_cpu), cpu_y(my_cpu),
-					  KERNEL_PL, pdata->irq);
-	if (ret) {
-		ret = -ENXIO;
-		goto err_have_irq;
-	}
-
-	/* Register all of our memory. */
-	pte = pte_set_home(pte, PAGE_HOME_HASH);
-	ret = gxio_usb_host_register_client_memory(&pdata->usb_ctx, pte, 0);
-	if (ret) {
-		ret = -ENXIO;
-		goto err_have_irq;
-	}
-
-	ohci_hcd_init(hcd_to_ohci(hcd));
-
-	ret = usb_add_hcd(hcd, pdata->irq, IRQF_SHARED);
-	if (ret == 0) {
-		platform_set_drvdata(pdev, hcd);
-		device_wakeup_enable(hcd->self.controller);
-		return ret;
-	}
-
-err_have_irq:
-	irq_free_hwirq(pdata->irq);
-err_no_irq:
-	tilegx_stop_ohc();
-	usb_put_hcd(hcd);
-err_hcd:
-	gxio_usb_host_destroy(&pdata->usb_ctx);
-	return ret;
-}
-
-static int ohci_hcd_tilegx_drv_remove(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd = platform_get_drvdata(pdev);
-	struct tilegx_usb_platform_data *pdata = dev_get_platdata(&pdev->dev);
-
-	usb_remove_hcd(hcd);
-	usb_put_hcd(hcd);
-	tilegx_stop_ohc();
-	gxio_usb_host_destroy(&pdata->usb_ctx);
-	irq_free_hwirq(pdata->irq);
-
-	return 0;
-}
-
-static void ohci_hcd_tilegx_drv_shutdown(struct platform_device *pdev)
-{
-	usb_hcd_platform_shutdown(pdev);
-	ohci_hcd_tilegx_drv_remove(pdev);
-}
-
-static struct platform_driver ohci_hcd_tilegx_driver = {
-	.probe		= ohci_hcd_tilegx_drv_probe,
-	.remove		= ohci_hcd_tilegx_drv_remove,
-	.shutdown	= ohci_hcd_tilegx_drv_shutdown,
-	.driver = {
-		.name	= "tilegx-ohci",
-	}
-};
-
-MODULE_ALIAS("platform:tilegx-ohci");