[PARISC] Update parisc specific input code from parisc tree

Update drivers to new input layer changes.
Signed-off-by: Helge Deller <deller@parisc-linux.org>
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>

Reorder code in gscps2_interrupt() and only enable ports when opened.
This fixes issues with hangs booting an SMP kernel on my C360.
Previously serio_interrupt() could be called before the lock in
struct serio was initialised.
Signed-off-by: Richard Hirst <rhirst@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>

drivers/input/keyboard/hil_kbd.c

@@ -204,7 +204,7 @@ static irqreturn_t hil_kbd_interrupt(struct serio *serio,
 	hil_packet packet;
 	int idx;
 
-	kbd = (struct hil_kbd *)serio->private;
+	kbd = serio_get_drvdata(serio);
 	if (kbd == NULL) {
 		BUG();
 		return IRQ_HANDLED;
@@ -234,7 +234,7 @@ static void hil_kbd_disconnect(struct serio *serio)
 {
 	struct hil_kbd *kbd;
 
-	kbd = (struct hil_kbd *)serio->private;
+	kbd = serio_get_drvdata(serio);
 	if (kbd == NULL) {
 		BUG();
 		return;
@@ -245,20 +245,20 @@ static void hil_kbd_disconnect(struct serio *serio)
 	kfree(kbd);
 }
 
-static void hil_kbd_connect(struct serio *serio, struct serio_driver *drv)
+static int hil_kbd_connect(struct serio *serio, struct serio_driver *drv)
 {
 	struct hil_kbd	*kbd;
 	uint8_t		did, *idd;
 	int		i;
 	
-	if (serio->type != (SERIO_HIL_MLC | SERIO_HIL)) return;
-
-	if (!(kbd = kmalloc(sizeof(struct hil_kbd), GFP_KERNEL))) return;
+	kbd = kmalloc(sizeof(*kbd), GFP_KERNEL);
+	if (!kbd)
+		return -ENOMEM;
 	memset(kbd, 0, sizeof(struct hil_kbd));
 
 	if (serio_open(serio, drv)) goto bail0;
 
-	serio->private = kbd;
+	serio_set_drvdata(serio, kbd);
 	kbd->serio = serio;
 	kbd->dev.private = kbd;
 
@@ -342,19 +342,31 @@ static void hil_kbd_connect(struct serio *serio, struct serio_driver *drv)
 	down(&(kbd->sem));
 	up(&(kbd->sem));
 
-	return;
+	return 0;
  bail1:
 	serio_close(serio);
  bail0:
 	kfree(kbd);
+	serio_set_drvdata(serio, NULL);
+	return -EIO;
 }
 
+static struct serio_device_id hil_kbd_ids[] = {
+	{
+		.type = SERIO_HIL_MLC,
+		.proto = SERIO_HIL,
+		.id = SERIO_ANY,
+		.extra = SERIO_ANY,
+	},
+	{ 0 }
+};
 
 struct serio_driver hil_kbd_serio_drv = {
 	.driver		= {
 		.name	= "hil_kbd",
 	},
 	.description	= "HP HIL keyboard driver",
+	.id_table	= hil_kbd_ids,
 	.connect 	= hil_kbd_connect,
 	.disconnect 	= hil_kbd_disconnect,
 	.interrupt 	= hil_kbd_interrupt

drivers/input/keyboard/hilkbd.c

@@ -22,7 +22,7 @@
 #include <linux/errno.h>
 #include <linux/input.h>
 #include <linux/init.h>
-#include <linux/irq.h>
+#include <linux/interrupt.h>
 #include <linux/hil.h>
 #include <linux/spinlock.h>
 

drivers/input/mouse/hil_ptr.c

@@ -196,7 +196,7 @@ static irqreturn_t hil_ptr_interrupt(struct serio *serio,
 	hil_packet packet;
 	int idx;
 
-	ptr = (struct hil_ptr *)serio->private;
+	ptr = serio_get_drvdata(serio);
 	if (ptr == NULL) {
 		BUG();
 		return IRQ_HANDLED;
@@ -227,7 +227,7 @@ static void hil_ptr_disconnect(struct serio *serio)
 {
 	struct hil_ptr *ptr;
 
-	ptr = (struct hil_ptr *)serio->private;
+	ptr = serio_get_drvdata(serio);
 	if (ptr == NULL) {
 		BUG();
 		return;
@@ -238,21 +238,19 @@ static void hil_ptr_disconnect(struct serio *serio)
 	kfree(ptr);
 }
 
-static void hil_ptr_connect(struct serio *serio, struct serio_driver *driver)
+static int hil_ptr_connect(struct serio *serio, struct serio_driver *driver)
 {
 	struct hil_ptr	*ptr;
 	char		*txt;
 	unsigned int	i, naxsets, btntype;
 	uint8_t		did, *idd;
 
-	if (serio->type != (SERIO_HIL_MLC | SERIO_HIL)) return;
-
-	if (!(ptr = kmalloc(sizeof(struct hil_ptr), GFP_KERNEL))) return;
+	if (!(ptr = kmalloc(sizeof(struct hil_ptr), GFP_KERNEL))) return -ENOMEM;
 	memset(ptr, 0, sizeof(struct hil_ptr));
 
 	if (serio_open(serio, driver)) goto bail0;
 
-	serio->private = ptr;
+	serio_set_drvdata(serio, ptr);
 	ptr->serio = serio;
 	ptr->dev.private = ptr;
 
@@ -380,23 +378,34 @@ static void hil_ptr_connect(struct serio *serio, struct serio_driver *driver)
 		(btntype == BTN_MOUSE) ? "HIL mouse":"HIL tablet or touchpad",
 		did);
 
-	return;
+	return 0;
  bail1:
 	serio_close(serio);
  bail0:
 	kfree(ptr);
-	return;
+	serio_set_drvdata(serio, NULL);
+	return -ENODEV;
 }
 
+static struct serio_device_id hil_ptr_ids[] = {
+	{
+		.type = SERIO_HIL_MLC,
+		.proto = SERIO_HIL,
+		.id = SERIO_ANY,
+		.extra = SERIO_ANY,
+	},
+	{ 0 }
+};
 
 static struct serio_driver hil_ptr_serio_driver = {
 	.driver		= {
 		.name	= "hil_ptr",
 	},
 	.description	= "HP HIL mouse/tablet driver",
-	.connect =	hil_ptr_connect,
-	.disconnect =	hil_ptr_disconnect,
-	.interrupt =	hil_ptr_interrupt
+	.id_table	= hil_ptr_ids,
+	.connect	= hil_ptr_connect,
+	.disconnect	= hil_ptr_disconnect,
+	.interrupt	= hil_ptr_interrupt
 };
 
 static int __init hil_ptr_init(void)

drivers/input/serio/gscps2.c

@@ -211,9 +211,6 @@ static void gscps2_reset(struct gscps2port *ps2port)
 	writeb(0xff, addr+GSC_RESET);
 	gscps2_flush(ps2port);
 	spin_unlock_irqrestore(&ps2port->lock, flags);
-
-	/* enable it */
-	gscps2_enable(ps2port, ENABLE);
 }
 
 static LIST_HEAD(ps2port_list);
@@ -307,6 +304,9 @@ static int gscps2_open(struct serio *port)
 
 	gscps2_reset(ps2port);
 
+	/* enable it */
+	gscps2_enable(ps2port, ENABLE);
+
 	gscps2_interrupt(0, NULL, NULL);
 
 	return 0;
@@ -370,8 +370,6 @@ static int __init gscps2_probe(struct parisc_device *dev)
 	serio->port_data	= ps2port;
 	serio->dev.parent	= &dev->dev;
 
-	list_add_tail(&ps2port->node, &ps2port_list);
-
 	ret = -EBUSY;
 	if (request_irq(dev->irq, gscps2_interrupt, SA_SHIRQ, ps2port->port->name, ps2port))
 		goto fail_miserably;
@@ -396,15 +394,16 @@ static int __init gscps2_probe(struct parisc_device *dev)
 
 	serio_register_port(ps2port->port);
 
+	list_add_tail(&ps2port->node, &ps2port_list);
+
 	return 0;
 
 fail:
 	free_irq(dev->irq, ps2port);
 
 fail_miserably:
-	list_del(&ps2port->node);
 	iounmap(ps2port->addr);
-	release_mem_region(dev->hpa, GSC_STATUS + 4);
+	release_mem_region(dev->hpa.start, GSC_STATUS + 4);
 
 fail_nomem:
 	kfree(ps2port);

drivers/input/serio/hil_mlc.c

@@ -801,7 +801,8 @@ static int hil_mlc_serio_open(struct serio *serio) {
 	struct hil_mlc_serio_map *map;
 	struct hil_mlc *mlc;
 
-	if (serio->private != NULL) return -EBUSY;
+	if (serio_get_drvdata(serio) != NULL)
+		return -EBUSY;
 
 	map = serio->port_data;
 	if (map == NULL) {
@@ -832,11 +833,18 @@ static void hil_mlc_serio_close(struct serio *serio) {
 		return;
 	}
 
-	serio->private = NULL;
+	serio_set_drvdata(serio, NULL);
 	serio->drv = NULL;
 	/* TODO wake up interruptable */
 }
 
+static struct serio_device_id hil_mlc_serio_id = {
+	.type = SERIO_HIL_MLC,
+	.proto = SERIO_HIL,
+	.extra = SERIO_ANY,
+	.id = SERIO_ANY,
+};
+
 int hil_mlc_register(hil_mlc *mlc) {
 	int i;
         unsigned long flags;
@@ -867,7 +875,7 @@ int hil_mlc_register(hil_mlc *mlc) {
 		mlc_serio = kmalloc(sizeof(*mlc_serio), GFP_KERNEL);
 		mlc->serio[i] = mlc_serio;
 		memset(mlc_serio, 0, sizeof(*mlc_serio));
-		mlc_serio->type			= SERIO_HIL | SERIO_HIL_MLC;
+		mlc_serio->id			= hil_mlc_serio_id;
 		mlc_serio->write		= hil_mlc_serio_write;
 		mlc_serio->open			= hil_mlc_serio_open;
 		mlc_serio->close		= hil_mlc_serio_close;

include/linux/hil_mlc.h

+/*
+ * HP Human Interface Loop Master Link Controller driver.
+ *
+ * Copyright (c) 2001 Brian S. Julin
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions, and the following disclaimer,
+ *    without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL").
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ *
+ * References:
+ * HP-HIL Technical Reference Manual.  Hewlett Packard Product No. 45918A
+ *
+ */
+
+#include <linux/hil.h>
+#include <linux/time.h>
+#include <linux/interrupt.h>
+#include <asm/semaphore.h>
+#include <linux/serio.h>
+#include <linux/list.h>
+
+typedef struct hil_mlc hil_mlc;
+
+/* The HIL has a complicated state engine.
+ * We define the structure of nodes in the state engine here.
+ */
+enum hilse_act {
+  	/* HILSE_OUT prepares to receive input if the next node
+	 * is an IN or EXPECT, and then sends the given packet.
+	 */
+	HILSE_OUT = 0,
+
+  	/* HILSE_CTS checks if the loop is busy. */
+	HILSE_CTS,
+
+	/* HILSE_OUT_LAST sends the given command packet to 
+	 * the last configured/running device on the loop.
+	 */
+	HILSE_OUT_LAST,
+
+	/* HILSE_OUT_DISC sends the given command packet to
+	 * the next device past the last configured/running one.
+	 */
+	HILSE_OUT_DISC,
+
+	/* HILSE_FUNC runs a callback function with given arguments.
+	 * a positive return value causes the "ugly" branch to be taken.
+	 */
+	HILSE_FUNC,
+
+  	/* HILSE_IN simply expects any non-errored packet to arrive 
+	 * within arg usecs.
+	 */
+	HILSE_IN		= 0x100,
+
+  	/* HILSE_EXPECT expects a particular packet to arrive 
+	 * within arg usecs, any other packet is considered an error.
+	 */
+	HILSE_EXPECT,
+
+  	/* HILSE_EXPECT_LAST as above but dev field should be last 
+	 * discovered/operational device.
+	 */
+	HILSE_EXPECT_LAST,
+
+  	/* HILSE_EXPECT_LAST as above but dev field should be first 
+	 * undiscovered/inoperational device.
+	 */
+	HILSE_EXPECT_DISC
+};
+
+typedef int	(hilse_func) (hil_mlc *mlc, int arg);
+struct hilse_node {
+	enum hilse_act		act;	/* How to process this node         */
+	union {
+		hilse_func	*func;	/* Function to call if HILSE_FUNC   */
+		hil_packet	packet;	/* Packet to send or to compare     */
+	} object;
+	int			arg;	/* Timeout in usec or parm for func */
+	int			good;	/* Node to jump to on success       */
+	int			bad;	/* Node to jump to on error         */
+	int			ugly;	/* Node to jump to on timeout       */
+};
+
+/* Methods for back-end drivers, e.g. hp_sdc_mlc */
+typedef int	(hil_mlc_cts) (hil_mlc *mlc);
+typedef void	(hil_mlc_out) (hil_mlc *mlc);
+typedef int	(hil_mlc_in)  (hil_mlc *mlc, suseconds_t timeout);
+
+struct hil_mlc_devinfo {
+	uint8_t	idd[16];	/* Device ID Byte and Describe Record */
+	uint8_t	rsc[16];	/* Security Code Header and Record */
+	uint8_t	exd[16];	/* Extended Describe Record */
+	uint8_t	rnm[16];	/* Device name as returned by RNM command */
+};
+
+struct hil_mlc_serio_map {
+	hil_mlc *mlc;
+	int di_revmap;
+	int didx;
+};
+
+/* How many (possibly old/detached) devices the we try to keep track of */
+#define HIL_MLC_DEVMEM 16
+
+struct hil_mlc {
+	struct list_head	list;	/* hil_mlc is organized as linked list */
+
+	rwlock_t		lock;
+
+	void *priv; /* Data specific to a particular type of MLC */
+
+	int 			seidx;	/* Current node in state engine */
+	int			istarted, ostarted;
+
+	hil_mlc_cts		*cts;
+	struct semaphore	csem;   /* Raised when loop idle */
+
+	hil_mlc_out		*out;
+	struct semaphore	osem;   /* Raised when outpacket dispatched */
+	hil_packet		opacket;
+
+	hil_mlc_in		*in;
+	struct semaphore	isem;   /* Raised when a packet arrives */
+	hil_packet		ipacket[16];
+	hil_packet		imatch;
+	int			icount;
+	struct timeval		instart;
+	suseconds_t		intimeout;
+
+	int			ddi;	/* Last operational device id */
+	int			lcv;	/* LCV to throttle loops */
+	struct timeval		lcv_tv; /* Time loop was started */
+
+	int			di_map[7]; /* Maps below items to live devs */
+	struct hil_mlc_devinfo	di[HIL_MLC_DEVMEM];
+	struct serio		*serio[HIL_MLC_DEVMEM];
+	struct hil_mlc_serio_map serio_map[HIL_MLC_DEVMEM];
+	hil_packet		serio_opacket[HIL_MLC_DEVMEM];
+	int			serio_oidx[HIL_MLC_DEVMEM];
+	struct hil_mlc_devinfo	di_scratch; /* Temporary area */
+
+	int			opercnt;
+
+	struct tasklet_struct	*tasklet;
+};
+
+int hil_mlc_register(hil_mlc *mlc);
+int hil_mlc_unregister(hil_mlc *mlc);

include/linux/input.h

@@ -644,6 +644,7 @@ struct input_absinfo {
 #define BUS_ADB			0x17
 #define BUS_I2C			0x18
 #define BUS_HOST		0x19
+#define BUS_GSC			0x1A
 
 /*
  * Values describing the status of an effect