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Message-Id: <20231219-sam-sparc32-sunset-v3-v1-5-64bb44b598c5@ravnborg.org>
Date: Tue, 19 Dec 2023 23:03:10 +0100
From: Sam Ravnborg via B4 Relay <devnull+sam.ravnborg.org@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Arnd Bergmann <arnd@...nel.org>, Andreas Larsson <andreas@...sler.com>
Cc: Helge Deller <deller@....de>, Alexander Viro <viro@...iv.linux.org.uk>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Alan Stern <stern@...land.harvard.edu>, Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>, sparclinux@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
linux-sound@...r.kernel.org, Sam Ravnborg <sam@...nborg.org>
Subject: [PATCH 05/27] sparc32: Drop sun specific power management drivers
From: Sam Ravnborg <sam@...nborg.org>
Drop the two sun specific apc and pmc drivers.
Signed-off-by: Sam Ravnborg <sam@...nborg.org>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Arnd Bergmann <arnd@...nel.org>
Cc: Andreas Larsson <andreas@...sler.com>
---
arch/sparc/Kconfig | 7 --
arch/sparc/kernel/Makefile | 1 -
arch/sparc/kernel/apc.c | 196 ---------------------------------------------
arch/sparc/kernel/pmc.c | 100 -----------------------
4 files changed, 304 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 1520f68e944a..55a9e67c482e 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -324,13 +324,6 @@ config CMDLINE
NOTE: This option WILL override the PROM bootargs setting!
-config SUN_PM
- bool
- default y if SPARC32
- help
- Enable power management and CPU standby features on supported
- SPARC platforms.
-
config SERIAL_CONSOLE
bool
depends on SPARC32
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index 95687af45d20..ab47823f8b4e 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -84,7 +84,6 @@ obj-$(CONFIG_SPARC32_SMP) += sun4m_smp.o sun4d_smp.o leon_smp.o
obj-$(CONFIG_SPARC64_SMP) += hvtramp.o
obj-y += auxio_$(BITS).o
-obj-$(CONFIG_SUN_PM) += apc.o pmc.o
obj-y += termios.o
diff --git a/arch/sparc/kernel/apc.c b/arch/sparc/kernel/apc.c
deleted file mode 100644
index d44725d37e30..000000000000
--- a/arch/sparc/kernel/apc.c
+++ /dev/null
@@ -1,196 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* apc - Driver implementation for power management functions
- * of Aurora Personality Chip (APC) on SPARCstation-4/5 and
- * derivatives.
- *
- * Copyright (c) 2002 Eric Brower (ebrower@....net)
- */
-
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/miscdevice.h>
-#include <linux/pm.h>
-#include <linux/of.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
-
-#include <asm/io.h>
-#include <asm/oplib.h>
-#include <linux/uaccess.h>
-#include <asm/auxio.h>
-#include <asm/apc.h>
-#include <asm/processor.h>
-
-/* Debugging
- *
- * #define APC_DEBUG_LED
- */
-
-#define APC_MINOR MISC_DYNAMIC_MINOR
-#define APC_OBPNAME "power-management"
-#define APC_DEVNAME "apc"
-
-static u8 __iomem *regs;
-static int apc_no_idle = 0;
-
-#define apc_readb(offs) (sbus_readb(regs+offs))
-#define apc_writeb(val, offs) (sbus_writeb(val, regs+offs))
-
-/* Specify "apc=noidle" on the kernel command line to
- * disable APC CPU standby support. Certain prototype
- * systems (SPARCstation-Fox) do not play well with APC
- * CPU idle, so disable this if your system has APC and
- * crashes randomly.
- */
-static int __init apc_setup(char *str)
-{
- if(!strncmp(str, "noidle", strlen("noidle"))) {
- apc_no_idle = 1;
- return 1;
- }
- return 0;
-}
-__setup("apc=", apc_setup);
-
-/*
- * CPU idle callback function
- * See .../arch/sparc/kernel/process.c
- */
-static void apc_swift_idle(void)
-{
-#ifdef APC_DEBUG_LED
- set_auxio(0x00, AUXIO_LED);
-#endif
-
- apc_writeb(apc_readb(APC_IDLE_REG) | APC_IDLE_ON, APC_IDLE_REG);
-
-#ifdef APC_DEBUG_LED
- set_auxio(AUXIO_LED, 0x00);
-#endif
-}
-
-static inline void apc_free(struct platform_device *op)
-{
- of_iounmap(&op->resource[0], regs, resource_size(&op->resource[0]));
-}
-
-static int apc_open(struct inode *inode, struct file *f)
-{
- return 0;
-}
-
-static int apc_release(struct inode *inode, struct file *f)
-{
- return 0;
-}
-
-static long apc_ioctl(struct file *f, unsigned int cmd, unsigned long __arg)
-{
- __u8 inarg, __user *arg = (__u8 __user *) __arg;
-
- switch (cmd) {
- case APCIOCGFANCTL:
- if (put_user(apc_readb(APC_FANCTL_REG) & APC_REGMASK, arg))
- return -EFAULT;
- break;
-
- case APCIOCGCPWR:
- if (put_user(apc_readb(APC_CPOWER_REG) & APC_REGMASK, arg))
- return -EFAULT;
- break;
-
- case APCIOCGBPORT:
- if (put_user(apc_readb(APC_BPORT_REG) & APC_BPMASK, arg))
- return -EFAULT;
- break;
-
- case APCIOCSFANCTL:
- if (get_user(inarg, arg))
- return -EFAULT;
- apc_writeb(inarg & APC_REGMASK, APC_FANCTL_REG);
- break;
-
- case APCIOCSCPWR:
- if (get_user(inarg, arg))
- return -EFAULT;
- apc_writeb(inarg & APC_REGMASK, APC_CPOWER_REG);
- break;
-
- case APCIOCSBPORT:
- if (get_user(inarg, arg))
- return -EFAULT;
- apc_writeb(inarg & APC_BPMASK, APC_BPORT_REG);
- break;
-
- default:
- return -EINVAL;
- }
-
- return 0;
-}
-
-static const struct file_operations apc_fops = {
- .unlocked_ioctl = apc_ioctl,
- .open = apc_open,
- .release = apc_release,
- .llseek = noop_llseek,
-};
-
-static struct miscdevice apc_miscdev = { APC_MINOR, APC_DEVNAME, &apc_fops };
-
-static int apc_probe(struct platform_device *op)
-{
- int err;
-
- regs = of_ioremap(&op->resource[0], 0,
- resource_size(&op->resource[0]), APC_OBPNAME);
- if (!regs) {
- printk(KERN_ERR "%s: unable to map registers\n", APC_DEVNAME);
- return -ENODEV;
- }
-
- err = misc_register(&apc_miscdev);
- if (err) {
- printk(KERN_ERR "%s: unable to register device\n", APC_DEVNAME);
- apc_free(op);
- return -ENODEV;
- }
-
- /* Assign power management IDLE handler */
- if (!apc_no_idle)
- sparc_idle = apc_swift_idle;
-
- printk(KERN_INFO "%s: power management initialized%s\n",
- APC_DEVNAME, apc_no_idle ? " (CPU idle disabled)" : "");
-
- return 0;
-}
-
-static const struct of_device_id apc_match[] = {
- {
- .name = APC_OBPNAME,
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, apc_match);
-
-static struct platform_driver apc_driver = {
- .driver = {
- .name = "apc",
- .of_match_table = apc_match,
- },
- .probe = apc_probe,
-};
-
-static int __init apc_init(void)
-{
- return platform_driver_register(&apc_driver);
-}
-
-/* This driver is not critical to the boot process
- * and is easiest to ioremap when SBus is already
- * initialized, so we install ourselves thusly:
- */
-__initcall(apc_init);
diff --git a/arch/sparc/kernel/pmc.c b/arch/sparc/kernel/pmc.c
deleted file mode 100644
index 69a0206e56f0..000000000000
--- a/arch/sparc/kernel/pmc.c
+++ /dev/null
@@ -1,100 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* pmc - Driver implementation for power management functions
- * of Power Management Controller (PMC) on SPARCstation-Voyager.
- *
- * Copyright (c) 2002 Eric Brower (ebrower@....net)
- */
-
-#include <linux/kernel.h>
-#include <linux/fs.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/pm.h>
-#include <linux/of.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
-
-#include <asm/io.h>
-#include <asm/oplib.h>
-#include <linux/uaccess.h>
-#include <asm/auxio.h>
-#include <asm/processor.h>
-
-/* Debug
- *
- * #define PMC_DEBUG_LED
- * #define PMC_NO_IDLE
- */
-
-#define PMC_OBPNAME "SUNW,pmc"
-#define PMC_DEVNAME "pmc"
-
-#define PMC_IDLE_REG 0x00
-#define PMC_IDLE_ON 0x01
-
-static u8 __iomem *regs;
-
-#define pmc_readb(offs) (sbus_readb(regs+offs))
-#define pmc_writeb(val, offs) (sbus_writeb(val, regs+offs))
-
-/*
- * CPU idle callback function
- * See .../arch/sparc/kernel/process.c
- */
-static void pmc_swift_idle(void)
-{
-#ifdef PMC_DEBUG_LED
- set_auxio(0x00, AUXIO_LED);
-#endif
-
- pmc_writeb(pmc_readb(PMC_IDLE_REG) | PMC_IDLE_ON, PMC_IDLE_REG);
-
-#ifdef PMC_DEBUG_LED
- set_auxio(AUXIO_LED, 0x00);
-#endif
-}
-
-static int pmc_probe(struct platform_device *op)
-{
- regs = of_ioremap(&op->resource[0], 0,
- resource_size(&op->resource[0]), PMC_OBPNAME);
- if (!regs) {
- printk(KERN_ERR "%s: unable to map registers\n", PMC_DEVNAME);
- return -ENODEV;
- }
-
-#ifndef PMC_NO_IDLE
- /* Assign power management IDLE handler */
- sparc_idle = pmc_swift_idle;
-#endif
-
- printk(KERN_INFO "%s: power management initialized\n", PMC_DEVNAME);
- return 0;
-}
-
-static const struct of_device_id pmc_match[] = {
- {
- .name = PMC_OBPNAME,
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, pmc_match);
-
-static struct platform_driver pmc_driver = {
- .driver = {
- .name = "pmc",
- .of_match_table = pmc_match,
- },
- .probe = pmc_probe,
-};
-
-static int __init pmc_init(void)
-{
- return platform_driver_register(&pmc_driver);
-}
-
-/* This driver is not critical to the boot process
- * and is easiest to ioremap when SBus is already
- * initialized, so we install ourselves thusly:
- */
-__initcall(pmc_init);
--
2.34.1
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