Merge tag 'sh-for-v6.7-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux

Pull sh updates from John Paul Adrian Glaubitz:
 "While the previously announced patch series for converting arch/sh to
  device trees is not yet ready for inclusion to mainline and therefore
  didn't make it for this pull request, there are still a small number
  changes for v6.7 which include one platform (board plus CPU and driver
  code) removal plus two fixes.

  The removal sent in by Arnd Bergmann concerns the microdev board which
  was an early SuperH prototype board that was never used in production.
  With the board removed, we were able to drop the now unused code for
  the SH4-202 CPU and well as the driver code for the superhyway bus and
  a custom implementation for ioport_map() and ioport_unmap() which will
  allow us to simplify ioport handling in the future.

  Another patch set by Geert Uytterhoeven revives SuperH BIOS
  earlyprintk support which got accidentally disabled in
  e76fe57447e88916 ("sh: Remove old early serial console code V2"), the
  second patch in the series updates the documentation.

  Finally, a patch by Masami Hiramatsu fixes a regression reported by
  the kernel test robot which uncovered that arch/sh is not implementing
  arch_cmpxchg_local() and therefore needs use __generic_cmpxchg_local()
  instead"

* tag 'sh-for-v6.7-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
  locking/atomic: sh: Use generic_cmpxchg_local for arch_cmpxchg_local()
  Documentation: kernel-parameters: Add earlyprintk=bios on SH
  sh: bios: Revive earlyprintk support
  sh: machvec: Remove custom ioport_{un,}map()
  sh: Remove superhyway bus support
  sh: Remove unused SH4-202 support
  sh: Remove stale microdev board

4 files changed, 1 insertions, 329 deletions

diff --git a/arch/sh/kernel/cpu/sh4/Makefile b/arch/sh/kernel/cpu/sh4/Makefile
index 00c16331e07e..02e3ee16e15c 100644
--- a/arch/sh/kernel/cpu/sh4/Makefile
+++ b/arch/sh/kernel/cpu/sh4/Makefile
@@ -23,15 +23,11 @@ obj-$(CONFIG_CPU_SUBTYPE_SH7091)	+= setup-sh7750.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7751)	+= setup-sh7750.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7751R)	+= setup-sh7750.o
 obj-$(CONFIG_CPU_SUBTYPE_SH7760)	+= setup-sh7760.o
-obj-$(CONFIG_CPU_SUBTYPE_SH4_202)	+= setup-sh4-202.o
 
 # Primary on-chip clocks (common)
 ifndef CONFIG_CPU_SH4A
 clock-$(CONFIG_CPU_SH4)			:= clock-sh4.o
 endif
 
-# Additional clocks by subtype
-clock-$(CONFIG_CPU_SUBTYPE_SH4_202)	+= clock-sh4-202.o
-
 obj-y					+= $(clock-y)
 obj-$(CONFIG_PERF_EVENTS)		+= $(perf-y)
diff --git a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c b/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
deleted file mode 100644
index c1cdef763cb2..000000000000
--- a/arch/sh/kernel/cpu/sh4/clock-sh4-202.c
+++ /dev/null
@@ -1,174 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * arch/sh/kernel/cpu/sh4/clock-sh4-202.c
- *
- * Additional SH4-202 support for the clock framework
- *
- *  Copyright (C) 2005  Paul Mundt
- */
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/clkdev.h>
-#include <asm/clock.h>
-#include <asm/freq.h>
-
-#define CPG2_FRQCR3	0xfe0a0018
-
-static int frqcr3_divisors[] = { 1, 2, 3, 4, 6, 8, 16 };
-static int frqcr3_values[]   = { 0, 1, 2, 3, 4, 5, 6  };
-
-static unsigned long emi_clk_recalc(struct clk *clk)
-{
-	int idx = __raw_readl(CPG2_FRQCR3) & 0x0007;
-	return clk->parent->rate / frqcr3_divisors[idx];
-}
-
-static inline int frqcr3_lookup(struct clk *clk, unsigned long rate)
-{
-	int divisor = clk->parent->rate / rate;
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(frqcr3_divisors); i++)
-		if (frqcr3_divisors[i] == divisor)
-			return frqcr3_values[i];
-
-	/* Safe fallback */
-	return 5;
-}
-
-static struct sh_clk_ops sh4202_emi_clk_ops = {
-	.recalc		= emi_clk_recalc,
-};
-
-static struct clk sh4202_emi_clk = {
-	.flags		= CLK_ENABLE_ON_INIT,
-	.ops		= &sh4202_emi_clk_ops,
-};
-
-static unsigned long femi_clk_recalc(struct clk *clk)
-{
-	int idx = (__raw_readl(CPG2_FRQCR3) >> 3) & 0x0007;
-	return clk->parent->rate / frqcr3_divisors[idx];
-}
-
-static struct sh_clk_ops sh4202_femi_clk_ops = {
-	.recalc		= femi_clk_recalc,
-};
-
-static struct clk sh4202_femi_clk = {
-	.flags		= CLK_ENABLE_ON_INIT,
-	.ops		= &sh4202_femi_clk_ops,
-};
-
-static void shoc_clk_init(struct clk *clk)
-{
-	int i;
-
-	/*
-	 * For some reason, the shoc_clk seems to be set to some really
-	 * insane value at boot (values outside of the allowable frequency
-	 * range for instance). We deal with this by scaling it back down
-	 * to something sensible just in case.
-	 *
-	 * Start scaling from the high end down until we find something
-	 * that passes rate verification..
-	 */
-	for (i = 0; i < ARRAY_SIZE(frqcr3_divisors); i++) {
-		int divisor = frqcr3_divisors[i];
-
-		if (clk->ops->set_rate(clk, clk->parent->rate / divisor) == 0)
-			break;
-	}
-
-	WARN_ON(i == ARRAY_SIZE(frqcr3_divisors));	/* Undefined clock */
-}
-
-static unsigned long shoc_clk_recalc(struct clk *clk)
-{
-	int idx = (__raw_readl(CPG2_FRQCR3) >> 6) & 0x0007;
-	return clk->parent->rate / frqcr3_divisors[idx];
-}
-
-static int shoc_clk_verify_rate(struct clk *clk, unsigned long rate)
-{
-	struct clk *bclk = clk_get(NULL, "bus_clk");
-	unsigned long bclk_rate = clk_get_rate(bclk);
-
-	clk_put(bclk);
-
-	if (rate > bclk_rate)
-		return 1;
-	if (rate > 66000000)
-		return 1;
-
-	return 0;
-}
-
-static int shoc_clk_set_rate(struct clk *clk, unsigned long rate)
-{
-	unsigned long frqcr3;
-	unsigned int tmp;
-
-	/* Make sure we have something sensible to switch to */
-	if (shoc_clk_verify_rate(clk, rate) != 0)
-		return -EINVAL;
-
-	tmp = frqcr3_lookup(clk, rate);
-
-	frqcr3 = __raw_readl(CPG2_FRQCR3);
-	frqcr3 &= ~(0x0007 << 6);
-	frqcr3 |= tmp << 6;
-	__raw_writel(frqcr3, CPG2_FRQCR3);
-
-	clk->rate = clk->parent->rate / frqcr3_divisors[tmp];
-
-	return 0;
-}
-
-static struct sh_clk_ops sh4202_shoc_clk_ops = {
-	.init		= shoc_clk_init,
-	.recalc		= shoc_clk_recalc,
-	.set_rate	= shoc_clk_set_rate,
-};
-
-static struct clk sh4202_shoc_clk = {
-	.flags		= CLK_ENABLE_ON_INIT,
-	.ops		= &sh4202_shoc_clk_ops,
-};
-
-static struct clk *sh4202_onchip_clocks[] = {
-	&sh4202_emi_clk,
-	&sh4202_femi_clk,
-	&sh4202_shoc_clk,
-};
-
-static struct clk_lookup lookups[] = {
-	/* main clocks */
-	CLKDEV_CON_ID("emi_clk", &sh4202_emi_clk),
-	CLKDEV_CON_ID("femi_clk", &sh4202_femi_clk),
-	CLKDEV_CON_ID("shoc_clk", &sh4202_shoc_clk),
-};
-
-int __init arch_clk_init(void)
-{
-	struct clk *clk;
-	int i, ret = 0;
-
-	cpg_clk_init();
-
-	clk = clk_get(NULL, "master_clk");
-	for (i = 0; i < ARRAY_SIZE(sh4202_onchip_clocks); i++) {
-		struct clk *clkp = sh4202_onchip_clocks[i];
-
-		clkp->parent = clk;
-		ret |= clk_register(clkp);
-	}
-
-	clk_put(clk);
-
-	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
-
-	return ret;
-}
diff --git a/arch/sh/kernel/cpu/sh4/setup-sh4-202.c b/arch/sh/kernel/cpu/sh4/setup-sh4-202.c
deleted file mode 100644
index e6737f3d0df2..000000000000
--- a/arch/sh/kernel/cpu/sh4/setup-sh4-202.c
+++ /dev/null
@@ -1,139 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * SH4-202 Setup
- *
- *  Copyright (C) 2006  Paul Mundt
- *  Copyright (C) 2009  Magnus Damm
- */
-#include <linux/platform_device.h>
-#include <linux/init.h>
-#include <linux/serial.h>
-#include <linux/serial_sci.h>
-#include <linux/sh_timer.h>
-#include <linux/sh_intc.h>
-#include <linux/io.h>
-#include <asm/platform_early.h>
-
-static struct plat_sci_port scif0_platform_data = {
-	.scscr		= SCSCR_REIE,
-	.type		= PORT_SCIF,
-};
-
-static struct resource scif0_resources[] = {
-	DEFINE_RES_MEM(0xffe80000, 0x100),
-	DEFINE_RES_IRQ(evt2irq(0x700)),
-	DEFINE_RES_IRQ(evt2irq(0x720)),
-	DEFINE_RES_IRQ(evt2irq(0x760)),
-	DEFINE_RES_IRQ(evt2irq(0x740)),
-};
-
-static struct platform_device scif0_device = {
-	.name		= "sh-sci",
-	.id		= 0,
-	.resource	= scif0_resources,
-	.num_resources	= ARRAY_SIZE(scif0_resources),
-	.dev		= {
-		.platform_data	= &scif0_platform_data,
-	},
-};
-
-static struct sh_timer_config tmu0_platform_data = {
-	.channels_mask = 7,
-};
-
-static struct resource tmu0_resources[] = {
-	DEFINE_RES_MEM(0xffd80000, 0x30),
-	DEFINE_RES_IRQ(evt2irq(0x400)),
-	DEFINE_RES_IRQ(evt2irq(0x420)),
-	DEFINE_RES_IRQ(evt2irq(0x440)),
-};
-
-static struct platform_device tmu0_device = {
-	.name		= "sh-tmu",
-	.id		= 0,
-	.dev = {
-		.platform_data	= &tmu0_platform_data,
-	},
-	.resource	= tmu0_resources,
-	.num_resources	= ARRAY_SIZE(tmu0_resources),
-};
-
-static struct platform_device *sh4202_devices[] __initdata = {
-	&scif0_device,
-	&tmu0_device,
-};
-
-static int __init sh4202_devices_setup(void)
-{
-	return platform_add_devices(sh4202_devices,
-				    ARRAY_SIZE(sh4202_devices));
-}
-arch_initcall(sh4202_devices_setup);
-
-static struct platform_device *sh4202_early_devices[] __initdata = {
-	&scif0_device,
-	&tmu0_device,
-};
-
-void __init plat_early_device_setup(void)
-{
-	sh_early_platform_add_devices(sh4202_early_devices,
-				   ARRAY_SIZE(sh4202_early_devices));
-}
-
-enum {
-	UNUSED = 0,
-
-	/* interrupt sources */
-	IRL0, IRL1, IRL2, IRL3, /* only IRLM mode supported */
-	HUDI, TMU0, TMU1, TMU2, RTC, SCIF, WDT,
-};
-
-static struct intc_vect vectors[] __initdata = {
-	INTC_VECT(HUDI, 0x600),
-	INTC_VECT(TMU0, 0x400), INTC_VECT(TMU1, 0x420),
-	INTC_VECT(TMU2, 0x440), INTC_VECT(TMU2, 0x460),
-	INTC_VECT(RTC, 0x480), INTC_VECT(RTC, 0x4a0),
-	INTC_VECT(RTC, 0x4c0),
-	INTC_VECT(SCIF, 0x700), INTC_VECT(SCIF, 0x720),
-	INTC_VECT(SCIF, 0x740), INTC_VECT(SCIF, 0x760),
-	INTC_VECT(WDT, 0x560),
-};
-
-static struct intc_prio_reg prio_registers[] __initdata = {
-	{ 0xffd00004, 0, 16, 4, /* IPRA */ { TMU0, TMU1, TMU2, RTC } },
-	{ 0xffd00008, 0, 16, 4, /* IPRB */ { WDT, 0, 0, 0 } },
-	{ 0xffd0000c, 0, 16, 4, /* IPRC */ { 0, 0, SCIF, HUDI } },
-	{ 0xffd00010, 0, 16, 4, /* IPRD */ { IRL0, IRL1, IRL2, IRL3 } },
-};
-
-static DECLARE_INTC_DESC(intc_desc, "sh4-202", vectors, NULL,
-			 NULL, prio_registers, NULL);
-
-static struct intc_vect vectors_irlm[] __initdata = {
-	INTC_VECT(IRL0, 0x240), INTC_VECT(IRL1, 0x2a0),
-	INTC_VECT(IRL2, 0x300), INTC_VECT(IRL3, 0x360),
-};
-
-static DECLARE_INTC_DESC(intc_desc_irlm, "sh4-202_irlm", vectors_irlm, NULL,
-			 NULL, prio_registers, NULL);
-
-void __init plat_irq_setup(void)
-{
-	register_intc_controller(&intc_desc);
-}
-
-#define INTC_ICR	0xffd00000UL
-#define INTC_ICR_IRLM   (1<<7)
-
-void __init plat_irq_setup_pins(int mode)
-{
-	switch (mode) {
-	case IRQ_MODE_IRQ: /* individual interrupt mode for IRL3-0 */
-		__raw_writew(__raw_readw(INTC_ICR) | INTC_ICR_IRLM, INTC_ICR);
-		register_intc_controller(&intc_desc_irlm);
-		break;
-	default:
-		BUG();
-	}
-}
diff --git a/arch/sh/kernel/ioport.c b/arch/sh/kernel/ioport.c
index f39446a658bd..c8aff8a20164 100644
--- a/arch/sh/kernel/ioport.c
+++ b/arch/sh/kernel/ioport.c
@@ -12,15 +12,6 @@
 unsigned long sh_io_port_base __read_mostly = -1;
 EXPORT_SYMBOL(sh_io_port_base);
 
-void __iomem *__ioport_map(unsigned long addr, unsigned int size)
-{
-	if (sh_mv.mv_ioport_map)
-		return sh_mv.mv_ioport_map(addr, size);
-
-	return (void __iomem *)(addr + sh_io_port_base);
-}
-EXPORT_SYMBOL(__ioport_map);
-
 void __iomem *ioport_map(unsigned long port, unsigned int nr)
 {
 	void __iomem *ret;
@@ -29,13 +20,11 @@ void __iomem *ioport_map(unsigned long port, unsigned int nr)
 	if (ret)
 		return ret;
 
-	return __ioport_map(port, nr);
+	return (void __iomem *)(port + sh_io_port_base);
 }
 EXPORT_SYMBOL(ioport_map);
 
 void ioport_unmap(void __iomem *addr)
 {
-	if (sh_mv.mv_ioport_unmap)
-		sh_mv.mv_ioport_unmap(addr);
 }
 EXPORT_SYMBOL(ioport_unmap);