+++ /dev/null
-/* ------------------------------------------------------------------------- */
-/* i2c-philips-par.c i2c-hw access for philips style parallel port adapters */
-/* ------------------------------------------------------------------------- */
-/* Copyright (C) 1995-2000 Simon G. Vogl
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/* ------------------------------------------------------------------------- */
-
-/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even
- Frodo Looijaard <frodol@dds.nl> */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/parport.h>
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-
-static int type;
-
-struct i2c_par
-{
- struct pardevice *pdev;
- struct i2c_adapter adapter;
- struct i2c_algo_bit_data bit_lp_data;
- struct i2c_par *next;
-};
-
-static struct i2c_par *adapter_list;
-
-
-/* ----- printer port defines ------------------------------------------*/
- /* Pin Port Inverted name */
-#define I2C_ON 0x20 /* 12 status N paper */
- /* ... only for phil. not used */
-#define I2C_SDA 0x80 /* 9 data N data7 */
-#define I2C_SCL 0x08 /* 17 ctrl N dsel */
-
-#define I2C_SDAIN 0x80 /* 11 stat Y busy */
-#define I2C_SCLIN 0x08 /* 15 stat Y enable */
-
-#define I2C_DMASK 0x7f
-#define I2C_CMASK 0xf7
-
-/* ----- local functions ---------------------------------------------- */
-
-static void bit_lp_setscl(void *data, int state)
-{
- /*be cautious about state of the control register -
- touch only the one bit needed*/
- if (state) {
- parport_write_control((struct parport *) data,
- parport_read_control((struct parport *) data)|I2C_SCL);
- } else {
- parport_write_control((struct parport *) data,
- parport_read_control((struct parport *) data)&I2C_CMASK);
- }
-}
-
-static void bit_lp_setsda(void *data, int state)
-{
- if (state) {
- parport_write_data((struct parport *) data, I2C_DMASK);
- } else {
- parport_write_data((struct parport *) data, I2C_SDA);
- }
-}
-
-static int bit_lp_getscl(void *data)
-{
- return parport_read_status((struct parport *) data) & I2C_SCLIN;
-}
-
-static int bit_lp_getsda(void *data)
-{
- return parport_read_status((struct parport *) data) & I2C_SDAIN;
-}
-
-static void bit_lp_setscl2(void *data, int state)
-{
- if (state) {
- parport_write_data((struct parport *) data,
- parport_read_data((struct parport *) data)|0x1);
- } else {
- parport_write_data((struct parport *) data,
- parport_read_data((struct parport *) data)&0xfe);
- }
-}
-
-static void bit_lp_setsda2(void *data, int state)
-{
- if (state) {
- parport_write_data((struct parport *) data,
- parport_read_data((struct parport *) data)|0x2);
- } else {
- parport_write_data((struct parport *) data,
- parport_read_data((struct parport *) data)&0xfd);
- }
-}
-
-static int bit_lp_getsda2(void *data)
-{
- return (parport_read_status((struct parport *) data) &
- PARPORT_STATUS_BUSY) ? 0 : 1;
-}
-
-/* ------------------------------------------------------------------------
- * Encapsulate the above functions in the correct operations structure.
- * This is only done when more than one hardware adapter is supported.
- */
-
-static struct i2c_algo_bit_data bit_lp_data = {
- .setsda = bit_lp_setsda,
- .setscl = bit_lp_setscl,
- .getsda = bit_lp_getsda,
- .getscl = bit_lp_getscl,
- .udelay = 80,
- .mdelay = 80,
- .timeout = HZ
-};
-
-static struct i2c_algo_bit_data bit_lp_data2 = {
- .setsda = bit_lp_setsda2,
- .setscl = bit_lp_setscl2,
- .getsda = bit_lp_getsda2,
- .udelay = 80,
- .mdelay = 80,
- .timeout = HZ
-};
-
-static struct i2c_adapter bit_lp_ops = {
- .owner = THIS_MODULE,
- .id = I2C_HW_B_LP,
- .name = "Philips Parallel port adapter",
-};
-
-static void i2c_parport_attach (struct parport *port)
-{
- struct i2c_par *adapter = kmalloc(sizeof(struct i2c_par),
- GFP_KERNEL);
- if (!adapter) {
- printk(KERN_ERR "i2c-philips-par: Unable to malloc.\n");
- return;
- }
- memset (adapter, 0x00, sizeof(struct i2c_par));
-
- /* pr_debug("i2c-philips-par: attaching to %s\n", port->name); */
-
- adapter->pdev = parport_register_device(port, "i2c-philips-par",
- NULL, NULL, NULL,
- PARPORT_FLAG_EXCL,
- NULL);
- if (!adapter->pdev) {
- printk(KERN_ERR "i2c-philips-par: Unable to register with parport.\n");
- kfree(adapter);
- return;
- }
-
- adapter->adapter = bit_lp_ops;
- adapter->adapter.algo_data = &adapter->bit_lp_data;
- adapter->bit_lp_data = type ? bit_lp_data2 : bit_lp_data;
- adapter->bit_lp_data.data = port;
-
- if (parport_claim_or_block(adapter->pdev) < 0 ) {
- printk(KERN_ERR "i2c-philips-par: Could not claim parallel port.\n");
- kfree(adapter);
- return;
- }
- /* reset hardware to sane state */
- adapter->bit_lp_data.setsda(port, 1);
- adapter->bit_lp_data.setscl(port, 1);
- parport_release(adapter->pdev);
-
- if (i2c_bit_add_bus(&adapter->adapter) < 0) {
- printk(KERN_ERR "i2c-philips-par: Unable to register with I2C.\n");
- parport_unregister_device(adapter->pdev);
- kfree(adapter);
- return; /* No good */
- }
-
- adapter->next = adapter_list;
- adapter_list = adapter;
-}
-
-static void i2c_parport_detach (struct parport *port)
-{
- struct i2c_par *adapter, *prev = NULL;
-
- for (adapter = adapter_list; adapter; adapter = adapter->next) {
- if (adapter->pdev->port == port) {
- parport_unregister_device(adapter->pdev);
- i2c_bit_del_bus(&adapter->adapter);
- if (prev)
- prev->next = adapter->next;
- else
- adapter_list = adapter->next;
- kfree(adapter);
- return;
- }
- prev = adapter;
- }
-}
-
-static struct parport_driver i2c_driver = {
- .name = "i2c-philips-par",
- .attach = i2c_parport_attach,
- .detach = i2c_parport_detach,
-};
-
-int __init i2c_bitlp_init(void)
-{
- printk(KERN_INFO "i2c Philips parallel port adapter driver\n");
-
- return parport_register_driver(&i2c_driver);
-}
-
-void __exit i2c_bitlp_exit(void)
-{
- parport_unregister_driver(&i2c_driver);
-}
-
-MODULE_AUTHOR("Simon G. Vogl <simon@tk.uni-linz.ac.at>");
-MODULE_DESCRIPTION("I2C-Bus adapter routines for Philips parallel port adapter");
-MODULE_LICENSE("GPL");
-
-MODULE_PARM(type, "i");
-
-module_init(i2c_bitlp_init);
-module_exit(i2c_bitlp_exit);
+++ /dev/null
-/* ------------------------------------------------------------------------- */
-/* i2c-velleman.c i2c-hw access for Velleman K8000 adapters */
-/* ------------------------------------------------------------------------- */
-/* Copyright (C) 1995-96, 2000 Simon G. Vogl
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/* ------------------------------------------------------------------------- */
-
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/i2c.h>
-#include <linux/i2c-algo-bit.h>
-#include <asm/io.h>
-
- /* Pin Port Inverted name */
-#define I2C_SDA 0x02 /* ctrl bit 1 (inv) */
-#define I2C_SCL 0x08 /* ctrl bit 3 (inv) */
-
-#define I2C_SDAIN 0x10 /* stat bit 4 */
-#define I2C_SCLIN 0x08 /* ctrl bit 3 (inv)(reads own output)*/
-
-#define I2C_DMASK 0xfd
-#define I2C_CMASK 0xf7
-
-
-/* --- Convenience defines for the parallel port: */
-#define BASE (unsigned long)(data)
-#define DATA BASE /* Centronics data port */
-#define STAT (BASE+1) /* Centronics status port */
-#define CTRL (BASE+2) /* Centronics control port */
-
-#define DEFAULT_BASE 0x378
-static long base=0;
-
-/* ----- local functions --------------------------------------------------- */
-
-static void bit_velle_setscl(void *data, int state)
-{
- if (state) {
- outb(inb(CTRL) & I2C_CMASK, CTRL);
- } else {
- outb(inb(CTRL) | I2C_SCL, CTRL);
- }
-
-}
-
-static void bit_velle_setsda(void *data, int state)
-{
- if (state) {
- outb(inb(CTRL) & I2C_DMASK , CTRL);
- } else {
- outb(inb(CTRL) | I2C_SDA, CTRL);
- }
-
-}
-
-static int bit_velle_getscl(void *data)
-{
- return ( 0 == ( (inb(CTRL)) & I2C_SCLIN ) );
-}
-
-static int bit_velle_getsda(void *data)
-{
- return ( 0 != ( (inb(STAT)) & I2C_SDAIN ) );
-}
-
-static int bit_velle_init(void)
-{
- if (!request_region(base, (base == 0x3bc) ? 3 : 8,
- "i2c (Vellemann adapter)"))
- return -ENODEV;
-
- bit_velle_setsda((void*)base,1);
- bit_velle_setscl((void*)base,1);
- return 0;
-}
-
-/* ------------------------------------------------------------------------
- * Encapsulate the above functions in the correct operations structure.
- * This is only done when more than one hardware adapter is supported.
- */
-
-static struct i2c_algo_bit_data bit_velle_data = {
- .setsda = bit_velle_setsda,
- .setscl = bit_velle_setscl,
- .getsda = bit_velle_getsda,
- .getscl = bit_velle_getscl,
- .udelay = 10,
- .mdelay = 10,
- .timeout = HZ
-};
-
-static struct i2c_adapter bit_velle_ops = {
- .owner = THIS_MODULE,
- .algo_data = &bit_velle_data,
- .name = "Velleman K8000",
-};
-
-static int __init i2c_bitvelle_init(void)
-{
- printk(KERN_INFO "i2c-velleman: i2c Velleman K8000 driver\n");
- if (base==0) {
- /* probe some values */
- base=DEFAULT_BASE;
- bit_velle_data.data=(void*)DEFAULT_BASE;
- if (bit_velle_init()==0) {
- if(i2c_bit_add_bus(&bit_velle_ops) < 0)
- return -ENODEV;
- } else {
- return -ENODEV;
- }
- } else {
- bit_velle_data.data=(void*)base;
- if (bit_velle_init()==0) {
- if(i2c_bit_add_bus(&bit_velle_ops) < 0)
- return -ENODEV;
- } else {
- return -ENODEV;
- }
- }
- pr_debug("i2c-velleman: found device at %#lx.\n",base);
- return 0;
-}
-
-static void __exit i2c_bitvelle_exit(void)
-{
- i2c_bit_del_bus(&bit_velle_ops);
- release_region(base, (base == 0x3bc) ? 3 : 8);
-}
-
-MODULE_AUTHOR("Simon G. Vogl <simon@tk.uni-linz.ac.at>");
-MODULE_DESCRIPTION("I2C-Bus adapter routines for Velleman K8000 adapter");
-MODULE_LICENSE("GPL");
-
-MODULE_PARM(base, "i");
-
-module_init(i2c_bitvelle_init);
-module_exit(i2c_bitvelle_exit);
projects / history.git / commitdiff