parallel port support, found via google. tested by fenrir

SVN-Revision: 412
This commit is contained in:
Waldemar Brodkorb 2005-03-21 17:29:30 +00:00
parent f4a21697cd
commit f53986ed6a
5 changed files with 349 additions and 79 deletions

View file

@ -68,6 +68,7 @@ $(eval $(call KMOD_template,USB,usb,\
,CONFIG_USB))
$(eval $(call KMOD_template,LP,lp,\
$(MODULES_DIR)/kernel/drivers/parport/parport.o \
$(MODULES_DIR)/kernel/drivers/parport/parport_splink.o \
$(MODULES_DIR)/kernel/drivers/char/lp.o \
,CONFIG_PARPORT))
$(eval $(call KMOD_template,VFAT,vfat,\

View file

@ -0,0 +1,345 @@
/* Low-level parallel port routines for the ASUS WL-500g built-in port
*
* Author: Nuno Grilo <nuno.grilo@netcabo.pt>
* Based on parport_pc source
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/parport.h>
#include <linux/parport_pc.h>
#define SPLINK_ADDRESS 0xBF800010
#undef DEBUG
#ifdef DEBUG
#define DPRINTK printk
#else
#define DPRINTK(stuff...)
#endif
/* __parport_splink_frob_control differs from parport_splink_frob_control in that
* it doesn't do any extra masking. */
static __inline__ unsigned char __parport_splink_frob_control (struct parport *p,
unsigned char mask,
unsigned char val)
{
struct parport_pc_private *priv = p->physport->private_data;
unsigned char *io = (unsigned char *) p->base;
unsigned char ctr = priv->ctr;
#ifdef DEBUG_PARPORT
printk (KERN_DEBUG
"__parport_splink_frob_control(%02x,%02x): %02x -> %02x\n",
mask, val, ctr, ((ctr & ~mask) ^ val) & priv->ctr_writable);
#endif
ctr = (ctr & ~mask) ^ val;
ctr &= priv->ctr_writable; /* only write writable bits. */
*(io+2) = ctr;
priv->ctr = ctr; /* Update soft copy */
return ctr;
}
static void parport_splink_data_forward (struct parport *p)
{
DPRINTK(KERN_DEBUG "parport_splink: parport_data_forward called\n");
__parport_splink_frob_control (p, 0x20, 0);
}
static void parport_splink_data_reverse (struct parport *p)
{
DPRINTK(KERN_DEBUG "parport_splink: parport_data_forward called\n");
__parport_splink_frob_control (p, 0x20, 0x20);
}
/*
static void parport_splink_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
DPRINTK(KERN_DEBUG "parport_splink: IRQ handler called\n");
parport_generic_irq(irq, (struct parport *) dev_id, regs);
}
*/
static void parport_splink_enable_irq(struct parport *p)
{
DPRINTK(KERN_DEBUG "parport_splink: parport_splink_enable_irq called\n");
__parport_splink_frob_control (p, 0x10, 0x10);
}
static void parport_splink_disable_irq(struct parport *p)
{
DPRINTK(KERN_DEBUG "parport_splink: parport_splink_disable_irq called\n");
__parport_splink_frob_control (p, 0x10, 0);
}
static void parport_splink_init_state(struct pardevice *dev, struct parport_state *s)
{
DPRINTK(KERN_DEBUG "parport_splink: parport_splink_init_state called\n");
s->u.pc.ctr = 0xc | (dev->irq_func ? 0x10 : 0x0);
if (dev->irq_func &&
dev->port->irq != PARPORT_IRQ_NONE)
/* Set ackIntEn */
s->u.pc.ctr |= 0x10;
}
static void parport_splink_save_state(struct parport *p, struct parport_state *s)
{
const struct parport_pc_private *priv = p->physport->private_data;
DPRINTK(KERN_DEBUG "parport_splink: parport_splink_save_state called\n");
s->u.pc.ctr = priv->ctr;
}
static void parport_splink_restore_state(struct parport *p, struct parport_state *s)
{
struct parport_pc_private *priv = p->physport->private_data;
unsigned char *io = (unsigned char *) p->base;
unsigned char ctr = s->u.pc.ctr;
DPRINTK(KERN_DEBUG "parport_splink: parport_splink_restore_state called\n");
*(io+2) = ctr;
priv->ctr = ctr;
}
static void parport_splink_setup_interrupt(void) {
return;
}
static void parport_splink_write_data(struct parport *p, unsigned char d) {
DPRINTK(KERN_DEBUG "parport_splink: write data called\n");
unsigned char *io = (unsigned char *) p->base;
*io = d;
}
static unsigned char parport_splink_read_data(struct parport *p) {
DPRINTK(KERN_DEBUG "parport_splink: read data called\n");
unsigned char *io = (unsigned char *) p->base;
return *io;
}
static void parport_splink_write_control(struct parport *p, unsigned char d)
{
const unsigned char wm = (PARPORT_CONTROL_STROBE |
PARPORT_CONTROL_AUTOFD |
PARPORT_CONTROL_INIT |
PARPORT_CONTROL_SELECT);
DPRINTK(KERN_DEBUG "parport_splink: write control called\n");
/* Take this out when drivers have adapted to the newer interface. */
if (d & 0x20) {
printk (KERN_DEBUG "%s (%s): use data_reverse for this!\n",
p->name, p->cad->name);
parport_splink_data_reverse (p);
}
__parport_splink_frob_control (p, wm, d & wm);
}
static unsigned char parport_splink_read_control(struct parport *p)
{
const unsigned char wm = (PARPORT_CONTROL_STROBE |
PARPORT_CONTROL_AUTOFD |
PARPORT_CONTROL_INIT |
PARPORT_CONTROL_SELECT);
DPRINTK(KERN_DEBUG "parport_splink: read control called\n");
const struct parport_pc_private *priv = p->physport->private_data;
return priv->ctr & wm; /* Use soft copy */
}
static unsigned char parport_splink_frob_control (struct parport *p, unsigned char mask,
unsigned char val)
{
const unsigned char wm = (PARPORT_CONTROL_STROBE |
PARPORT_CONTROL_AUTOFD |
PARPORT_CONTROL_INIT |
PARPORT_CONTROL_SELECT);
DPRINTK(KERN_DEBUG "parport_splink: frob control called\n");
/* Take this out when drivers have adapted to the newer interface. */
if (mask & 0x20) {
printk (KERN_DEBUG "%s (%s): use data_%s for this!\n",
p->name, p->cad->name,
(val & 0x20) ? "reverse" : "forward");
if (val & 0x20)
parport_splink_data_reverse (p);
else
parport_splink_data_forward (p);
}
/* Restrict mask and val to control lines. */
mask &= wm;
val &= wm;
return __parport_splink_frob_control (p, mask, val);
}
static unsigned char parport_splink_read_status(struct parport *p)
{
DPRINTK(KERN_DEBUG "parport_splink: read status called\n");
unsigned char *io = (unsigned char *) p->base;
return *(io+1);
}
static void parport_splink_inc_use_count(void)
{
#ifdef MODULE
MOD_INC_USE_COUNT;
#endif
}
static void parport_splink_dec_use_count(void)
{
#ifdef MODULE
MOD_DEC_USE_COUNT;
#endif
}
static struct parport_operations parport_splink_ops =
{
parport_splink_write_data,
parport_splink_read_data,
parport_splink_write_control,
parport_splink_read_control,
parport_splink_frob_control,
parport_splink_read_status,
parport_splink_enable_irq,
parport_splink_disable_irq,
parport_splink_data_forward,
parport_splink_data_reverse,
parport_splink_init_state,
parport_splink_save_state,
parport_splink_restore_state,
parport_splink_inc_use_count,
parport_splink_dec_use_count,
parport_ieee1284_epp_write_data,
parport_ieee1284_epp_read_data,
parport_ieee1284_epp_write_addr,
parport_ieee1284_epp_read_addr,
parport_ieee1284_ecp_write_data,
parport_ieee1284_ecp_read_data,
parport_ieee1284_ecp_write_addr,
parport_ieee1284_write_compat,
parport_ieee1284_read_nibble,
parport_ieee1284_read_byte,
};
/* --- Initialisation code -------------------------------- */
static struct parport *parport_splink_probe_port (unsigned long int base)
{
struct parport_pc_private *priv;
struct parport_operations *ops;
struct parport *p;
if (check_mem_region(base, 3)) {
printk (KERN_DEBUG "parport (0x%lx): iomem region not available\n", base);
return NULL;
}
priv = kmalloc (sizeof (struct parport_pc_private), GFP_KERNEL);
if (!priv) {
printk (KERN_DEBUG "parport (0x%lx): no memory!\n", base);
return NULL;
}
ops = kmalloc (sizeof (struct parport_operations), GFP_KERNEL);
if (!ops) {
printk (KERN_DEBUG "parport (0x%lx): no memory for ops!\n",
base);
kfree (priv);
return NULL;
}
memcpy (ops, &parport_splink_ops, sizeof (struct parport_operations));
priv->ctr = 0xc;
priv->ctr_writable = 0xff;
if (!(p = parport_register_port(base, PARPORT_IRQ_NONE,
PARPORT_DMA_NONE, ops))) {
printk (KERN_DEBUG "parport (0x%lx): registration failed!\n",
base);
kfree (priv);
kfree (ops);
return NULL;
}
p->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_SAFEININT;
p->size = (p->modes & PARPORT_MODE_EPP)?8:3;
p->private_data = priv;
parport_proc_register(p);
request_mem_region (p->base, 3, p->name);
/* Done probing. Now put the port into a sensible start-up state. */
parport_splink_write_data(p, 0);
parport_splink_data_forward (p);
/* Now that we've told the sharing engine about the port, and
found out its characteristics, let the high-level drivers
know about it. */
parport_announce_port (p);
DPRINTK(KERN_DEBUG "parport (0x%lx): init ok!\n",
base);
return p;
}
static void parport_splink_unregister_port(struct parport *p) {
struct parport_pc_private *priv = p->private_data;
struct parport_operations *ops = p->ops;
if (p->irq != PARPORT_IRQ_NONE)
free_irq(p->irq, p);
release_mem_region(p->base, 3);
parport_proc_unregister(p);
kfree (priv);
parport_unregister_port(p);
kfree (ops);
}
int parport_splink_init(void)
{
int ret;
DPRINTK(KERN_DEBUG "parport_splink init called\n");
parport_splink_setup_interrupt();
ret = !parport_splink_probe_port(SPLINK_ADDRESS);
return ret;
}
void parport_splink_cleanup(void) {
struct parport *p = parport_enumerate(), *tmp;
DPRINTK(KERN_DEBUG "parport_splink cleanup called\n");
if (p->size) {
if (p->modes & PARPORT_MODE_PCSPP) {
while(p) {
tmp = p->next;
parport_splink_unregister_port(p);
p = tmp;
}
}
}
}
MODULE_AUTHOR("Nuno Grilo <nuno.grilo@netcabo.pt>");
MODULE_DESCRIPTION("Parport Driver for ASUS WL-500g router builtin Port");
MODULE_SUPPORTED_DEVICE("ASUS WL-500g builtin Parallel Port");
MODULE_LICENSE("GPL");
module_init(parport_splink_init)
module_exit(parport_splink_cleanup)

View file

@ -1,5 +1,5 @@
#
# Automatically generated make config: don't edit
# Automatically generated by make menuconfig: don't edit
#
CONFIG_MIPS=y
CONFIG_MIPS32=y
@ -181,10 +181,6 @@ CONFIG_MTD_PARTITIONS=y
# CONFIG_MTD_CONCAT is not set
# CONFIG_MTD_REDBOOT_PARTS is not set
# CONFIG_MTD_CMDLINE_PARTS is not set
#
# User Modules And Translation Layers
#
CONFIG_MTD_CHAR=y
CONFIG_MTD_BLOCK=y
# CONFIG_FTL is not set
@ -250,10 +246,6 @@ CONFIG_MTD_SFLASH=y
# CONFIG_MTD_SLRAM is not set
# CONFIG_MTD_MTDRAM is not set
# CONFIG_MTD_BLKMTD is not set
#
# Disk-On-Chip Device Drivers
#
# CONFIG_MTD_DOC1000 is not set
# CONFIG_MTD_DOC2000 is not set
# CONFIG_MTD_DOC2001 is not set
@ -268,12 +260,8 @@ CONFIG_MTD_SFLASH=y
# Parallel port support
#
CONFIG_PARPORT=m
CONFIG_PARPORT_PC=m
CONFIG_PARPORT_PC_CML1=m
# CONFIG_PARPORT_SERIAL is not set
# CONFIG_PARPORT_PC_FIFO is not set
# CONFIG_PARPORT_PC_SUPERIO is not set
# CONFIG_PARPORT_PC_PCMCIA is not set
# CONFIG_PARPORT_PC is not set
CONFIG_PARPORT_SPLINK=m
# CONFIG_PARPORT_AMIGA is not set
# CONFIG_PARPORT_MFC3 is not set
# CONFIG_PARPORT_ATARI is not set
@ -437,10 +425,6 @@ CONFIG_IP6_NF_TARGET_MARK=m
# CONFIG_IP_SCTP is not set
# CONFIG_ATM is not set
CONFIG_VLAN_8021Q=y
#
#
#
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_DECNET is not set
@ -525,20 +509,12 @@ CONFIG_NET_CLS_POLICE=y
# SCSI support
#
CONFIG_SCSI=m
#
# SCSI support type (disk, tape, CD-ROM)
#
CONFIG_BLK_DEV_SD=m
CONFIG_SD_EXTRA_DEVS=5
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
# CONFIG_BLK_DEV_SR is not set
CONFIG_CHR_DEV_SG=m
#
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
#
# CONFIG_SCSI_DEBUG_QUEUES is not set
# CONFIG_SCSI_MULTI_LUN is not set
# CONFIG_SCSI_CONSTANTS is not set
@ -780,14 +756,6 @@ CONFIG_PRINTER=m
# Joysticks
#
# CONFIG_INPUT_GAMEPORT is not set
#
# Input core support is needed for gameports
#
#
# Input core support is needed for joysticks
#
# CONFIG_QIC02_TAPE is not set
# CONFIG_IPMI_HANDLER is not set
# CONFIG_IPMI_PANIC_EVENT is not set
@ -1016,24 +984,12 @@ CONFIG_NLS_DEFAULT="iso8859-1"
#
CONFIG_USB=m
# CONFIG_USB_DEBUG is not set
#
# Miscellaneous USB options
#
CONFIG_USB_DEVICEFS=y
# CONFIG_USB_BANDWIDTH is not set
#
# USB Host Controller Drivers
#
# CONFIG_USB_EHCI_HCD is not set
# CONFIG_USB_UHCI is not set
# CONFIG_USB_UHCI_ALT is not set
CONFIG_USB_OHCI=m
#
# USB Device Class drivers
#
# CONFIG_USB_AUDIO is not set
# CONFIG_USB_EMI26 is not set
# CONFIG_USB_BLUETOOTH is not set
@ -1050,15 +1006,7 @@ CONFIG_USB_STORAGE_SDDR55=y
CONFIG_USB_STORAGE_JUMPSHOT=y
# CONFIG_USB_ACM is not set
CONFIG_USB_PRINTER=m
#
# USB Human Interface Devices (HID)
#
# CONFIG_USB_HID is not set
#
# Input core support is needed for USB HID input layer or HIDBP support
#
# CONFIG_USB_HIDINPUT is not set
# CONFIG_USB_HIDDEV is not set
# CONFIG_USB_KBD is not set
@ -1067,47 +1015,23 @@ CONFIG_USB_PRINTER=m
# CONFIG_USB_WACOM is not set
# CONFIG_USB_KBTAB is not set
# CONFIG_USB_POWERMATE is not set
#
# USB Imaging devices
#
# CONFIG_USB_DC2XX is not set
# CONFIG_USB_MDC800 is not set
# CONFIG_USB_SCANNER is not set
# CONFIG_USB_MICROTEK is not set
# CONFIG_USB_HPUSBSCSI is not set
#
# USB Multimedia devices
#
#
# Video4Linux support is needed for USB Multimedia device support
#
#
# USB Network adaptors
#
# CONFIG_USB_PEGASUS is not set
# CONFIG_USB_RTL8150 is not set
# CONFIG_USB_KAWETH is not set
# CONFIG_USB_CATC is not set
# CONFIG_USB_CDCETHER is not set
# CONFIG_USB_USBNET is not set
#
# USB port drivers
#
# CONFIG_USB_USS720 is not set
#
# USB Serial Converter support
#
# CONFIG_USB_SERIAL is not set
#
# USB Miscellaneous drivers
#
# CONFIG_USB_RIO500 is not set
# CONFIG_USB_AUERSWALD is not set
# CONFIG_USB_TIGL is not set