Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/sbus/char/uctrl.c b/drivers/sbus/char/uctrl.c
new file mode 100644
index 0000000..858cc68
--- /dev/null
+++ b/drivers/sbus/char/uctrl.c
@@ -0,0 +1,422 @@
+/* $Id: uctrl.c,v 1.12 2001/10/08 22:19:51 davem Exp $
+ * uctrl.c: TS102 Microcontroller interface on Tadpole Sparcbook 3
+ *
+ * Copyright 1999 Derrick J Brashear (shadow@dementia.org)
+ */
+
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/miscdevice.h>
+#include <linux/mm.h>
+
+#include <asm/openprom.h>
+#include <asm/oplib.h>
+#include <asm/system.h>
+#include <asm/irq.h>
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/sbus.h>
+
+#define UCTRL_MINOR 174
+
+#define DEBUG 1
+#ifdef DEBUG
+#define dprintk(x) printk x
+#else
+#define dprintk(x)
+#endif
+
+struct uctrl_regs {
+ volatile u32 uctrl_intr;
+ volatile u32 uctrl_data;
+ volatile u32 uctrl_stat;
+ volatile u32 uctrl_xxx[5];
+};
+
+struct ts102_regs {
+ volatile u32 card_a_intr;
+ volatile u32 card_a_stat;
+ volatile u32 card_a_ctrl;
+ volatile u32 card_a_xxx;
+ volatile u32 card_b_intr;
+ volatile u32 card_b_stat;
+ volatile u32 card_b_ctrl;
+ volatile u32 card_b_xxx;
+ volatile u32 uctrl_intr;
+ volatile u32 uctrl_data;
+ volatile u32 uctrl_stat;
+ volatile u32 uctrl_xxx;
+ volatile 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 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,
+};
+
+struct uctrl_driver {
+ struct uctrl_regs *regs;
+ int irq;
+ int pending;
+ struct uctrl_status status;
+};
+
+static struct uctrl_driver drv;
+
+void uctrl_get_event_status(void);
+void uctrl_get_external_status(void);
+
+static int
+uctrl_ioctl(struct inode *inode, 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)
+{
+ uctrl_get_event_status();
+ uctrl_get_external_status();
+ return 0;
+}
+
+static irqreturn_t uctrl_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct uctrl_driver *driver = (struct uctrl_driver *)dev_id;
+ printk("in uctrl_interrupt\n");
+ return IRQ_HANDLED;
+}
+
+static struct file_operations uctrl_fops = {
+ .owner = THIS_MODULE,
+ .llseek = no_llseek,
+ .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 & driver->regs->uctrl_stat) \
+ break; \
+ } \
+ dprintk(("write data 0x%02x\n", value)); \
+ driver->regs->uctrl_data = value; \
+}
+
+/* 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 & driver->regs->uctrl_stat) == 0) \
+ break; \
+ udelay(1); \
+ } \
+ value = driver->regs->uctrl_data; \
+ dprintk(("read data 0x%02x\n", value)); \
+ driver->regs->uctrl_stat = UCTRL_STAT_RXNE_STA; \
+}
+
+void uctrl_set_video(int status)
+{
+ struct uctrl_driver *driver = &drv;
+
+}
+
+static void uctrl_do_txn(struct uctrl_txn *txn)
+{
+ struct uctrl_driver *driver = &drv;
+ int stat, incnt, outcnt, bytecnt, intr;
+ u32 byte;
+
+ stat = driver->regs->uctrl_stat;
+ intr = driver->regs->uctrl_intr;
+ driver->regs->uctrl_stat = 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++;
+ }
+}
+
+void uctrl_get_event_status()
+{
+ struct uctrl_driver *driver = &drv;
+ struct uctrl_txn txn;
+ u8 outbits[2];
+
+ txn.opcode = READ_EVENT_STATUS;
+ txn.inbits = 0;
+ txn.outbits = 2;
+ txn.inbuf = 0;
+ txn.outbuf = outbits;
+
+ uctrl_do_txn(&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));
+}
+
+void uctrl_get_external_status()
+{
+ struct uctrl_driver *driver = &drv;
+ struct uctrl_txn txn;
+ u8 outbits[2];
+ int i, v;
+
+ txn.opcode = READ_EXTERNAL_STATUS;
+ txn.inbits = 0;
+ txn.outbits = 2;
+ txn.inbuf = 0;
+ txn.outbuf = outbits;
+
+ uctrl_do_txn(&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 __init ts102_uctrl_init(void)
+{
+ struct uctrl_driver *driver = &drv;
+ int len, i;
+ struct linux_prom_irqs tmp_irq[2];
+ unsigned int vaddr[2] = { 0, 0 };
+ int tmpnode, uctrlnode = prom_getchild(prom_root_node);
+
+ tmpnode = prom_searchsiblings(uctrlnode, "obio");
+
+ if (tmpnode)
+ uctrlnode = prom_getchild(tmpnode);
+
+ uctrlnode = prom_searchsiblings(uctrlnode, "uctrl");
+
+ if (!uctrlnode)
+ return -ENODEV;
+
+ /* the prom mapped it for us */
+ len = prom_getproperty(uctrlnode, "address", (void *) vaddr,
+ sizeof(vaddr));
+ driver->regs = (struct uctrl_regs *)vaddr[0];
+
+ len = prom_getproperty(uctrlnode, "intr", (char *) tmp_irq,
+ sizeof(tmp_irq));
+
+ /* Flush device */
+ READUCTLDATA(len);
+
+ if(!driver->irq)
+ driver->irq = tmp_irq[0].pri;
+
+ request_irq(driver->irq, uctrl_interrupt, 0, "uctrl", driver);
+
+ if (misc_register(&uctrl_dev)) {
+ printk("%s: unable to get misc minor %d\n",
+ __FUNCTION__, uctrl_dev.minor);
+ free_irq(driver->irq, driver);
+ return -ENODEV;
+ }
+
+ driver->regs->uctrl_intr = UCTRL_INTR_RXNE_REQ|UCTRL_INTR_RXNE_MSK;
+ printk("uctrl: 0x%x (irq %s)\n", driver->regs, __irq_itoa(driver->irq));
+ uctrl_get_event_status();
+ uctrl_get_external_status();
+ return 0;
+}
+
+static void __exit ts102_uctrl_cleanup(void)
+{
+ struct uctrl_driver *driver = &drv;
+
+ misc_deregister(&uctrl_dev);
+ if (driver->irq)
+ free_irq(driver->irq, driver);
+ if (driver->regs)
+ driver->regs = 0;
+}
+
+module_init(ts102_uctrl_init);
+module_exit(ts102_uctrl_cleanup);
+MODULE_LICENSE("GPL");