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Message-Id: <20240309-sunset-v2-27-f09912574d2c@ravnborg.org>
Date: Sat, 09 Mar 2024 19:15:48 +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>, Randy Dunlap <rdunlap@...radead.org>,
John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
Mark Cave-Ayland <mark.cave-ayland@...nde.co.uk>,
Kjetil Oftedal <oftedal@...il.com>, Thomas Zimmermann <tzimmermann@...e.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 v2 27/28] sbus: char: Drop now unused uctrl driver
From: Sam Ravnborg <sam@...nborg.org>
The uctrl driver is only relevant for the Sparcbook 3 machine,
and with sun4m support removed this driver is no logner relevant.
Signed-off-by: Sam Ravnborg <sam@...nborg.org>
Acked-by: Arnd Bergmann <arnd@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Arnd Bergmann <arnd@...nel.org>
Cc: Andreas Larsson <andreas@...sler.com>
---
drivers/sbus/char/Kconfig | 8 -
drivers/sbus/char/Makefile | 1 -
drivers/sbus/char/uctrl.c | 434 ---------------------------------------------
3 files changed, 443 deletions(-)
diff --git a/drivers/sbus/char/Kconfig b/drivers/sbus/char/Kconfig
index 7c0a308e4959..8b80abc554ed 100644
--- a/drivers/sbus/char/Kconfig
+++ b/drivers/sbus/char/Kconfig
@@ -21,14 +21,6 @@ config OBP_FLASH
The OpenBoot PROM on Ultra systems is flashable. If you want to be
able to upgrade the OBP firmware, say Y here.
-config TADPOLE_TS102_UCTRL
- tristate "Tadpole TS102 Microcontroller support"
- help
- Say Y here to directly support the TS102 Microcontroller interface
- on the Tadpole Sparcbook 3. This device handles power-management
- events, and can also notice the attachment/detachment of external
- monitors and mice.
-
config BBC_I2C
tristate "UltraSPARC-III bootbus i2c controller driver"
depends on PCI && SPARC64
diff --git a/drivers/sbus/char/Makefile b/drivers/sbus/char/Makefile
index 44347c918f6b..9db2faabfae8 100644
--- a/drivers/sbus/char/Makefile
+++ b/drivers/sbus/char/Makefile
@@ -14,6 +14,5 @@ obj-$(CONFIG_ENVCTRL) += envctrl.o
obj-$(CONFIG_DISPLAY7SEG) += display7seg.o
obj-$(CONFIG_OBP_FLASH) += flash.o
obj-$(CONFIG_SUN_OPENPROMIO) += openprom.o
-obj-$(CONFIG_TADPOLE_TS102_UCTRL) += uctrl.o
obj-$(CONFIG_BBC_I2C) += bbc.o
obj-$(CONFIG_ORACLE_DAX) += oradax.o
diff --git a/drivers/sbus/char/uctrl.c b/drivers/sbus/char/uctrl.c
deleted file mode 100644
index cf15a4186d03..000000000000
--- a/drivers/sbus/char/uctrl.c
+++ /dev/null
@@ -1,434 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* uctrl.c: TS102 Microcontroller interface on Tadpole Sparcbook 3
- *
- * Copyright 1999 Derrick J Brashear (shadow@...entia.org)
- * Copyright 2008 David S. Miller (davem@...emloft.net)
- */
-
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <linux/ioport.h>
-#include <linux/miscdevice.h>
-#include <linux/mm.h>
-#include <linux/of.h>
-#include <linux/platform_device.h>
-
-#include <asm/openprom.h>
-#include <asm/oplib.h>
-#include <asm/irq.h>
-#include <asm/io.h>
-
-#define DEBUG 1
-#ifdef DEBUG
-#define dprintk(x) printk x
-#else
-#define dprintk(x)
-#endif
-
-struct uctrl_regs {
- u32 uctrl_intr;
- u32 uctrl_data;
- u32 uctrl_stat;
- u32 uctrl_xxx[5];
-};
-
-struct ts102_regs {
- u32 card_a_intr;
- u32 card_a_stat;
- u32 card_a_ctrl;
- u32 card_a_xxx;
- u32 card_b_intr;
- u32 card_b_stat;
- u32 card_b_ctrl;
- u32 card_b_xxx;
- u32 uctrl_intr;
- u32 uctrl_data;
- u32 uctrl_stat;
- u32 uctrl_xxx;
- u32 ts102_xxx[4];
-};
-
-/* Bits for uctrl_intr register */
-#define UCTRL_INTR_TXE_REQ 0x01 /* transmit FIFO empty int req */
-#define UCTRL_INTR_TXNF_REQ 0x02 /* transmit FIFO not full int req */
-#define UCTRL_INTR_RXNE_REQ 0x04 /* receive FIFO not empty int req */
-#define UCTRL_INTR_RXO_REQ 0x08 /* receive FIFO overflow int req */
-#define UCTRL_INTR_TXE_MSK 0x10 /* transmit FIFO empty mask */
-#define UCTRL_INTR_TXNF_MSK 0x20 /* transmit FIFO not full mask */
-#define UCTRL_INTR_RXNE_MSK 0x40 /* receive FIFO not empty mask */
-#define UCTRL_INTR_RXO_MSK 0x80 /* receive FIFO overflow mask */
-
-/* Bits for uctrl_stat register */
-#define UCTRL_STAT_TXE_STA 0x01 /* transmit FIFO empty status */
-#define UCTRL_STAT_TXNF_STA 0x02 /* transmit FIFO not full status */
-#define UCTRL_STAT_RXNE_STA 0x04 /* receive FIFO not empty status */
-#define UCTRL_STAT_RXO_STA 0x08 /* receive FIFO overflow status */
-
-static DEFINE_MUTEX(uctrl_mutex);
-static const char *uctrl_extstatus[16] = {
- "main power available",
- "internal battery attached",
- "external battery attached",
- "external VGA attached",
- "external keyboard attached",
- "external mouse attached",
- "lid down",
- "internal battery currently charging",
- "external battery currently charging",
- "internal battery currently discharging",
- "external battery currently discharging",
-};
-
-/* Everything required for one transaction with the uctrl */
-struct uctrl_txn {
- u8 opcode;
- u8 inbits;
- u8 outbits;
- u8 *inbuf;
- u8 *outbuf;
-};
-
-struct uctrl_status {
- u8 current_temp; /* 0x07 */
- u8 reset_status; /* 0x0b */
- u16 event_status; /* 0x0c */
- u16 error_status; /* 0x10 */
- u16 external_status; /* 0x11, 0x1b */
- u8 internal_charge; /* 0x18 */
- u8 external_charge; /* 0x19 */
- u16 control_lcd; /* 0x20 */
- u8 control_bitport; /* 0x21 */
- u8 speaker_volume; /* 0x23 */
- u8 control_tft_brightness; /* 0x24 */
- u8 control_kbd_repeat_delay; /* 0x28 */
- u8 control_kbd_repeat_period; /* 0x29 */
- u8 control_screen_contrast; /* 0x2F */
-};
-
-enum uctrl_opcode {
- READ_SERIAL_NUMBER=0x1,
- READ_ETHERNET_ADDRESS=0x2,
- READ_HARDWARE_VERSION=0x3,
- READ_MICROCONTROLLER_VERSION=0x4,
- READ_MAX_TEMPERATURE=0x5,
- READ_MIN_TEMPERATURE=0x6,
- READ_CURRENT_TEMPERATURE=0x7,
- READ_SYSTEM_VARIANT=0x8,
- READ_POWERON_CYCLES=0x9,
- READ_POWERON_SECONDS=0xA,
- READ_RESET_STATUS=0xB,
- READ_EVENT_STATUS=0xC,
- READ_REAL_TIME_CLOCK=0xD,
- READ_EXTERNAL_VGA_PORT=0xE,
- READ_MICROCONTROLLER_ROM_CHECKSUM=0xF,
- READ_ERROR_STATUS=0x10,
- READ_EXTERNAL_STATUS=0x11,
- READ_USER_CONFIGURATION_AREA=0x12,
- READ_MICROCONTROLLER_VOLTAGE=0x13,
- READ_INTERNAL_BATTERY_VOLTAGE=0x14,
- READ_DCIN_VOLTAGE=0x15,
- READ_HORIZONTAL_POINTER_VOLTAGE=0x16,
- READ_VERTICAL_POINTER_VOLTAGE=0x17,
- READ_INTERNAL_BATTERY_CHARGE_LEVEL=0x18,
- READ_EXTERNAL_BATTERY_CHARGE_LEVEL=0x19,
- READ_REAL_TIME_CLOCK_ALARM=0x1A,
- READ_EVENT_STATUS_NO_RESET=0x1B,
- READ_INTERNAL_KEYBOARD_LAYOUT=0x1C,
- READ_EXTERNAL_KEYBOARD_LAYOUT=0x1D,
- READ_EEPROM_STATUS=0x1E,
- CONTROL_LCD=0x20,
- CONTROL_BITPORT=0x21,
- SPEAKER_VOLUME=0x23,
- CONTROL_TFT_BRIGHTNESS=0x24,
- CONTROL_WATCHDOG=0x25,
- CONTROL_FACTORY_EEPROM_AREA=0x26,
- CONTROL_KBD_TIME_UNTIL_REPEAT=0x28,
- CONTROL_KBD_TIME_BETWEEN_REPEATS=0x29,
- CONTROL_TIMEZONE=0x2A,
- CONTROL_MARK_SPACE_RATIO=0x2B,
- CONTROL_DIAGNOSTIC_MODE=0x2E,
- CONTROL_SCREEN_CONTRAST=0x2F,
- RING_BELL=0x30,
- SET_DIAGNOSTIC_STATUS=0x32,
- CLEAR_KEY_COMBINATION_TABLE=0x33,
- PERFORM_SOFTWARE_RESET=0x34,
- SET_REAL_TIME_CLOCK=0x35,
- RECALIBRATE_POINTING_STICK=0x36,
- SET_BELL_FREQUENCY=0x37,
- SET_INTERNAL_BATTERY_CHARGE_RATE=0x39,
- SET_EXTERNAL_BATTERY_CHARGE_RATE=0x3A,
- SET_REAL_TIME_CLOCK_ALARM=0x3B,
- READ_EEPROM=0x40,
- WRITE_EEPROM=0x41,
- WRITE_TO_STATUS_DISPLAY=0x42,
- DEFINE_SPECIAL_CHARACTER=0x43,
- DEFINE_KEY_COMBINATION_ENTRY=0x50,
- DEFINE_STRING_TABLE_ENTRY=0x51,
- DEFINE_STATUS_SCREEN_DISPLAY=0x52,
- PERFORM_EMU_COMMANDS=0x64,
- READ_EMU_REGISTER=0x65,
- WRITE_EMU_REGISTER=0x66,
- READ_EMU_RAM=0x67,
- WRITE_EMU_RAM=0x68,
- READ_BQ_REGISTER=0x69,
- WRITE_BQ_REGISTER=0x6A,
- SET_USER_PASSWORD=0x70,
- VERIFY_USER_PASSWORD=0x71,
- GET_SYSTEM_PASSWORD_KEY=0x72,
- VERIFY_SYSTEM_PASSWORD=0x73,
- POWER_OFF=0x82,
- POWER_RESTART=0x83,
-};
-
-static struct uctrl_driver {
- struct uctrl_regs __iomem *regs;
- int irq;
- int pending;
- struct uctrl_status status;
-} *global_driver;
-
-static void uctrl_get_event_status(struct uctrl_driver *);
-static void uctrl_get_external_status(struct uctrl_driver *);
-
-static long
-uctrl_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
- switch (cmd) {
- default:
- return -EINVAL;
- }
- return 0;
-}
-
-static int
-uctrl_open(struct inode *inode, struct file *file)
-{
- mutex_lock(&uctrl_mutex);
- uctrl_get_event_status(global_driver);
- uctrl_get_external_status(global_driver);
- mutex_unlock(&uctrl_mutex);
- return 0;
-}
-
-static irqreturn_t uctrl_interrupt(int irq, void *dev_id)
-{
- return IRQ_HANDLED;
-}
-
-static const struct file_operations uctrl_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .unlocked_ioctl = uctrl_ioctl,
- .open = uctrl_open,
-};
-
-static struct miscdevice uctrl_dev = {
- UCTRL_MINOR,
- "uctrl",
- &uctrl_fops
-};
-
-/* Wait for space to write, then write to it */
-#define WRITEUCTLDATA(value) \
-{ \
- unsigned int i; \
- for (i = 0; i < 10000; i++) { \
- if (UCTRL_STAT_TXNF_STA & sbus_readl(&driver->regs->uctrl_stat)) \
- break; \
- } \
- dprintk(("write data 0x%02x\n", value)); \
- sbus_writel(value, &driver->regs->uctrl_data); \
-}
-
-/* Wait for something to read, read it, then clear the bit */
-#define READUCTLDATA(value) \
-{ \
- unsigned int i; \
- value = 0; \
- for (i = 0; i < 10000; i++) { \
- if ((UCTRL_STAT_RXNE_STA & sbus_readl(&driver->regs->uctrl_stat)) == 0) \
- break; \
- udelay(1); \
- } \
- value = sbus_readl(&driver->regs->uctrl_data); \
- dprintk(("read data 0x%02x\n", value)); \
- sbus_writel(UCTRL_STAT_RXNE_STA, &driver->regs->uctrl_stat); \
-}
-
-static void uctrl_do_txn(struct uctrl_driver *driver, struct uctrl_txn *txn)
-{
- int stat, incnt, outcnt, bytecnt, intr;
- u32 byte;
-
- stat = sbus_readl(&driver->regs->uctrl_stat);
- intr = sbus_readl(&driver->regs->uctrl_intr);
- sbus_writel(stat, &driver->regs->uctrl_stat);
-
- dprintk(("interrupt stat 0x%x int 0x%x\n", stat, intr));
-
- incnt = txn->inbits;
- outcnt = txn->outbits;
- byte = (txn->opcode << 8);
- WRITEUCTLDATA(byte);
-
- bytecnt = 0;
- while (incnt > 0) {
- byte = (txn->inbuf[bytecnt] << 8);
- WRITEUCTLDATA(byte);
- incnt--;
- bytecnt++;
- }
-
- /* Get the ack */
- READUCTLDATA(byte);
- dprintk(("ack was %x\n", (byte >> 8)));
-
- bytecnt = 0;
- while (outcnt > 0) {
- READUCTLDATA(byte);
- txn->outbuf[bytecnt] = (byte >> 8);
- dprintk(("set byte to %02x\n", byte));
- outcnt--;
- bytecnt++;
- }
-}
-
-static void uctrl_get_event_status(struct uctrl_driver *driver)
-{
- struct uctrl_txn txn;
- u8 outbits[2];
-
- txn.opcode = READ_EVENT_STATUS;
- txn.inbits = 0;
- txn.outbits = 2;
- txn.inbuf = NULL;
- txn.outbuf = outbits;
-
- uctrl_do_txn(driver, &txn);
-
- dprintk(("bytes %x %x\n", (outbits[0] & 0xff), (outbits[1] & 0xff)));
- driver->status.event_status =
- ((outbits[0] & 0xff) << 8) | (outbits[1] & 0xff);
- dprintk(("ev is %x\n", driver->status.event_status));
-}
-
-static void uctrl_get_external_status(struct uctrl_driver *driver)
-{
- struct uctrl_txn txn;
- u8 outbits[2];
- int i, v;
-
- txn.opcode = READ_EXTERNAL_STATUS;
- txn.inbits = 0;
- txn.outbits = 2;
- txn.inbuf = NULL;
- txn.outbuf = outbits;
-
- uctrl_do_txn(driver, &txn);
-
- dprintk(("bytes %x %x\n", (outbits[0] & 0xff), (outbits[1] & 0xff)));
- driver->status.external_status =
- ((outbits[0] * 256) + (outbits[1]));
- dprintk(("ex is %x\n", driver->status.external_status));
- v = driver->status.external_status;
- for (i = 0; v != 0; i++, v >>= 1) {
- if (v & 1) {
- dprintk(("%s%s", " ", uctrl_extstatus[i]));
- }
- }
- dprintk(("\n"));
-
-}
-
-static int uctrl_probe(struct platform_device *op)
-{
- struct uctrl_driver *p;
- int err = -ENOMEM;
-
- p = kzalloc(sizeof(*p), GFP_KERNEL);
- if (!p) {
- printk(KERN_ERR "uctrl: Unable to allocate device struct.\n");
- goto out;
- }
-
- p->regs = of_ioremap(&op->resource[0], 0,
- resource_size(&op->resource[0]),
- "uctrl");
- if (!p->regs) {
- printk(KERN_ERR "uctrl: Unable to map registers.\n");
- goto out_free;
- }
-
- p->irq = op->archdata.irqs[0];
- err = request_irq(p->irq, uctrl_interrupt, 0, "uctrl", p);
- if (err) {
- printk(KERN_ERR "uctrl: Unable to register irq.\n");
- goto out_iounmap;
- }
-
- err = misc_register(&uctrl_dev);
- if (err) {
- printk(KERN_ERR "uctrl: Unable to register misc device.\n");
- goto out_free_irq;
- }
-
- sbus_writel(UCTRL_INTR_RXNE_REQ|UCTRL_INTR_RXNE_MSK, &p->regs->uctrl_intr);
- printk(KERN_INFO "%pOF: uctrl regs[0x%p] (irq %d)\n",
- op->dev.of_node, p->regs, p->irq);
- uctrl_get_event_status(p);
- uctrl_get_external_status(p);
-
- dev_set_drvdata(&op->dev, p);
- global_driver = p;
-
-out:
- return err;
-
-out_free_irq:
- free_irq(p->irq, p);
-
-out_iounmap:
- of_iounmap(&op->resource[0], p->regs, resource_size(&op->resource[0]));
-
-out_free:
- kfree(p);
- goto out;
-}
-
-static void uctrl_remove(struct platform_device *op)
-{
- struct uctrl_driver *p = dev_get_drvdata(&op->dev);
-
- if (p) {
- misc_deregister(&uctrl_dev);
- free_irq(p->irq, p);
- of_iounmap(&op->resource[0], p->regs, resource_size(&op->resource[0]));
- kfree(p);
- }
-}
-
-static const struct of_device_id uctrl_match[] = {
- {
- .name = "uctrl",
- },
- {},
-};
-MODULE_DEVICE_TABLE(of, uctrl_match);
-
-static struct platform_driver uctrl_driver = {
- .driver = {
- .name = "uctrl",
- .of_match_table = uctrl_match,
- },
- .probe = uctrl_probe,
- .remove_new = uctrl_remove,
-};
-
-
-module_platform_driver(uctrl_driver);
-
-MODULE_LICENSE("GPL");
--
2.34.1
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