Hi.
This patch updates i2c support in kernel to 2.6.0. I have corrected original patch
to use slab.h instead of malloc.h, a couple #endif's, and Comfigure.help references
to other docs in <file:...> format.
It was done on 2.4.6-ac5, but should apply on 2.4.7. Only problem is those
document references in <file:.......> format, that are not suitable for plain 2.4.7.
BTW, is there any chance to include lm_sensors also in mainstream kernel ?
TIA
--- linux-old/Documentation/i2c/writing-clients Mon Jul 23 01:39:46 CEST 2001
+++ linux/Documentation/i2c/writing-clients Mon Jul 23 01:39:46 CEST 2001
@@ -34,5 +34,5 @@
/* command */ &foo_command, /* May be NULL */
/* inc_use */ &foo_inc_use, /* May be NULL */
- /* dec_use */ &foo_dev_use /* May be NULL */
+ /* dec_use */ &foo_dec_use /* May be NULL */
}
--- linux-old/drivers/i2c/i2c-algo-bit.c Mon Jul 23 01:39:47 CEST 2001
+++ linux/drivers/i2c/i2c-algo-bit.c Mon Jul 23 01:39:47 CEST 2001
@@ -22,5 +22,5 @@
Frodo Looijaard <frodol@dds.nl> */
-/* $Id: i2c-algo-bit.c,v 1.27 2000/07/09 15:16:16 frodo Exp $ */
+/* $Id: i2c-algo-bit.c,v 1.29 2001/04/03 02:44:02 mds Exp $ */
#include <linux/kernel.h>
--- linux-old/drivers/i2c/i2c-algo-pcf.c Mon Jul 23 01:39:48 CEST 2001
+++ linux/drivers/i2c/i2c-algo-pcf.c Mon Jul 23 01:39:48 CEST 2001
@@ -1,3 +1,2 @@
-
/* ------------------------------------------------------------------------- */
/* i2c-algo-pcf.c i2c driver algorithms for PCF8584 adapters */
@@ -25,5 +24,7 @@
<mbailey@littlefeet-inc.com> */
-/* $Id: i2c-algo-pcf.c,v 1.25 2000/11/10 13:43:32 frodo Exp $ */
+/* Partially rewriten by Oleg I. Vdovikin <vdovikin@jscc.ru> to handle multiple
+ messages, proper stop/repstart signaling during receive,
+ added detect code */
#include <linux/kernel.h>
@@ -50,24 +51,7 @@
#define DEF_TIMEOUT 16
-/* debugging - slow down transfer to have a look at the data .. */
-/* I use this with two leds&resistors, each one connected to sda,scl */
-/* respectively. This makes sure that the algorithm works. Some chips */
-/* might not like this, as they have an internal timeout of some mils */
-/*
-#define SLO_IO jif=jiffies;while(jiffies<=jif+i2c_table[minor].veryslow)\
- if (need_resched) schedule();
-*/
-
-
-/* ----- global variables --------------------------------------------- */
-
-#ifdef SLO_IO
- int jif;
-#endif
-
/* module parameters:
*/
-static int i2c_debug=1;
-static int pcf_test=0; /* see if the line-setting functions work */
+static int i2c_debug=0;
static int pcf_scan=0; /* have a look at what's hanging 'round */
@@ -81,5 +65,4 @@
#define i2c_inb(adap) adap->getpcf(adap->data, 0)
-
/* --- other auxiliary functions -------------------------------------- */
@@ -112,14 +95,13 @@
#ifndef STUB_I2C
while (timeout-- && !(status & I2C_PCF_BB)) {
- udelay(1000); /* How much is this? */
+ udelay(100); /* wait for 100 us */
status = get_pcf(adap, 1);
}
#endif
- if (timeout<=0)
+ if (timeout <= 0) {
printk("Timeout waiting for Bus Busy\n");
- /*
- set_pcf(adap, 1, I2C_PCF_STOP);
- */
- return(timeout<=0);
+ }
+
+ return (timeout<=0);
}
@@ -148,5 +130,4 @@
}
-
/*
* This should perform the 'PCF8584 initialization sequence' as described
@@ -157,109 +138,62 @@
* to synchronize the BB-bit (in multimaster systems). How long is
* this? I assume 1 second is always long enough.
+ *
+ * vdovikin: added detect code for PCF8584
*/
static int pcf_init_8584 (struct i2c_algo_pcf_data *adap)
{
+ unsigned char temp;
+
+ DEB3(printk("i2c-algo-pcf.o: PCF state 0x%02x\n", get_pcf(adap, 1)));
- /* S1=0x80: S0 selected, serial interface off */
+ /* S1=0x80: S0 selected, serial interface off */
set_pcf(adap, 1, I2C_PCF_PIN);
+ /* check to see S1 now used as R/W ctrl -
+ PCF8584 does that when ESO is zero */
+ /* PCF also resets PIN bit */
+ if ((temp = get_pcf(adap, 1)) != (0)) {
+ DEB2(printk("i2c-algo-pcf.o: PCF detection failed -- can't select S0 (0x%02x).\n", temp));
+ return -ENXIO; /* definetly not PCF8584 */
+ }
/* load own address in S0, effective address is (own << 1) */
i2c_outb(adap, get_own(adap));
+ /* check it's realy writen */
+ if ((temp = i2c_inb(adap)) != get_own(adap)) {
+ DEB2(printk("i2c-algo-pcf.o: PCF detection failed -- can't set S0 (0x%02x).\n", temp));
+ return -ENXIO;
+ }
/* S1=0xA0, next byte in S2 */
set_pcf(adap, 1, I2C_PCF_PIN | I2C_PCF_ES1);
+ /* check to see S2 now selected */
+ if ((temp = get_pcf(adap, 1)) != I2C_PCF_ES1) {
+ DEB2(printk("i2c-algo-pcf.o: PCF detection failed -- can't select S2 (0x%02x).\n", temp));
+ return -ENXIO;
+ }
/* load clock register S2 */
i2c_outb(adap, get_clock(adap));
+ /* check it's realy writen, the only 5 lowest bits does matter */
+ if (((temp = i2c_inb(adap)) & 0x1f) != get_clock(adap)) {
+ DEB2(printk("i2c-algo-pcf.o: PCF detection failed -- can't set S2 (0x%02x).\n", temp));
+ return -ENXIO;
+ }
/* Enable serial interface, idle, S0 selected */
set_pcf(adap, 1, I2C_PCF_IDLE);
- DEB2(printk("i2c-algo-pcf.o: irq: Initialized 8584.\n"));
- return 0;
-}
-
-
-/*
- * Sanity check for the adapter hardware - check the reaction of
- * the bus lines only if it seems to be idle.
- */
-static int test_bus(struct i2c_algo_pcf_data *adap, char *name) {
-#if 0
- int scl,sda;
- sda=getsda(adap);
- if (adap->getscl==NULL) {
- printk("i2c-algo-pcf.o: Warning: Adapter can't read from clock line - skipping test.\n");
- return 0;
- }
- scl=getscl(adap);
- printk("i2c-algo-pcf.o: Adapter: %s scl: %d sda: %d -- testing...\n",
- name,getscl(adap),getsda(adap));
- if (!scl || !sda ) {
- printk("i2c-algo-pcf.o: %s seems to be busy.\n",adap->name);
- goto bailout;
- }
- sdalo(adap);
- printk("i2c-algo-pcf.o:1 scl: %d sda: %d \n",getscl(adap),
- getsda(adap));
- if ( 0 != getsda(adap) ) {
- printk("i2c-algo-pcf.o: %s SDA stuck high!\n",name);
- sdahi(adap);
- goto bailout;
- }
- if ( 0 == getscl(adap) ) {
- printk("i2c-algo-pcf.o: %s SCL unexpected low while pulling SDA low!\n",
- name);
- goto bailout;
- }
- sdahi(adap);
- printk("i2c-algo-pcf.o:2 scl: %d sda: %d \n",getscl(adap),
- getsda(adap));
- if ( 0 == getsda(adap) ) {
- printk("i2c-algo-pcf.o: %s SDA stuck low!\n",name);
- sdahi(adap);
- goto bailout;
- }
- if ( 0 == getscl(adap) ) {
- printk("i2c-algo-pcf.o: %s SCL unexpected low while SDA high!\n",
- adap->name);
- goto bailout;
- }
- scllo(adap);
- printk("i2c-algo-pcf.o:3 scl: %d sda: %d \n",getscl(adap),
- getsda(adap));
- if ( 0 != getscl(adap) ) {
- printk("i2c-algo-pcf.o: %s SCL stuck high!\n",name);
- sclhi(adap);
- goto bailout;
- }
- if ( 0 == getsda(adap) ) {
- printk("i2c-algo-pcf.o: %s SDA unexpected low while pulling SCL low!\n",
- name);
- goto bailout;
- }
- sclhi(adap);
- printk("i2c-algo-pcf.o:4 scl: %d sda: %d \n",getscl(adap),
- getsda(adap));
- if ( 0 == getscl(adap) ) {
- printk("i2c-algo-pcf.o: %s SCL stuck low!\n",name);
- sclhi(adap);
- goto bailout;
- }
- if ( 0 == getsda(adap) ) {
- printk("i2c-algo-pcf.o: %s SDA unexpected low while SCL high!\n",
- name);
- goto bailout;
+ /* check to see PCF is realy idled and we can access status register */
+ if ((temp = get_pcf(adap, 1)) != (I2C_PCF_PIN | I2C_PCF_BB)) {
+ DEB2(printk("i2c-algo-pcf.o: PCF detection failed -- can't select S1` (0x%02x).\n", temp));
+ return -ENXIO;
}
- printk("i2c-algo-pcf.o: %s passed test.\n",name);
+
+ printk("i2c-algo-pcf.o: deteted and initialized PCF8584.\n");
+
return 0;
-bailout:
- sdahi(adap);
- sclhi(adap);
- return -ENODEV;
-#endif
- return (0);
}
+
/* ----- Utility functions
*/
@@ -288,6 +222,6 @@
-static int pcf_sendbytes(struct i2c_adapter *i2c_adap,const char *buf,
- int count)
+static int pcf_sendbytes(struct i2c_adapter *i2c_adap, const char *buf,
+ int count, int last)
{
struct i2c_algo_pcf_data *adap = i2c_adap->algo_data;
@@ -300,5 +234,5 @@
timeout = wait_for_pin(adap, &status);
if (timeout) {
- i2c_stop(adap);
+ i2c_stop(adap);
printk("i2c-algo-pcf.o: %s i2c_write: "
"error - timeout.\n", i2c_adap->name);
@@ -307,5 +241,5 @@
#ifndef STUB_I2C
if (status & I2C_PCF_LRB) {
- i2c_stop(adap);
+ i2c_stop(adap);
printk("i2c-algo-pcf.o: %s i2c_write: "
"error - no ack.\n", i2c_adap->name);
@@ -314,56 +248,57 @@
#endif
}
- i2c_stop(adap);
+ if (last) {
+ i2c_stop(adap);
+ }
+ else {
+ i2c_repstart(adap);
+ }
+
return (wrcount);
}
-static int pcf_readbytes(struct i2c_adapter *i2c_adap, char *buf, int count)
+static int pcf_readbytes(struct i2c_adapter *i2c_adap, char *buf,
+ int count, int last)
{
- int rdcount=0, i, status, timeout, dummy=1;
+ int i, status;
struct i2c_algo_pcf_data *adap = i2c_adap->algo_data;
-
- for (i=0; i<count; ++i) {
- buf[rdcount] = i2c_inb(adap);
- if (dummy) {
- dummy = 0;
- } else {
- rdcount++;
- }
- timeout = wait_for_pin(adap, &status);
- if (timeout) {
- i2c_stop(adap);
- printk("i2c-algo-pcf.o: i2c_read: "
- "i2c_inb timed out.\n");
+
+ /* increment number of bytes to read by one -- read dummy byte */
+ for (i = 0; i <= count; i++) {
+
+ if (wait_for_pin(adap, &status)) {
+ i2c_stop(adap);
+ printk("i2c-algo-pcf.o: pcf_readbytes timed out.\n");
return (-1);
}
+
#ifndef STUB_I2C
- if (status & I2C_PCF_LRB) {
- i2c_stop(adap);
+ if ((status & I2C_PCF_LRB) && (i != count)) {
+ i2c_stop(adap);
printk("i2c-algo-pcf.o: i2c_read: i2c_inb, No ack.\n");
return (-1);
}
#endif
- }
- set_pcf(adap, 1, I2C_PCF_ESO);
- buf[rdcount] = i2c_inb(adap);
- if (dummy) {
- dummy = 0;
- } else {
- rdcount++;
- }
- timeout = wait_for_pin(adap, &status);
- if (timeout) {
- i2c_stop(adap);
- printk("i2c-algo-pcf.o: i2c_read: i2c_inb timed out.\n");
- return (-1);
- }
-
- i2c_stop(adap);
+
+ if (i == count - 1) {
+ set_pcf(adap, 1, I2C_PCF_ESO);
+ } else
+ if (i == count) {
+ if (last) {
+ i2c_stop(adap);
+ } else {
+ i2c_repstart(adap);
+ }
+ };
- /* Read final byte from S0 register */
- buf[rdcount++] = i2c_inb(adap);
+ if (i) {
+ buf[i - 1] = i2c_inb(adap);
+ } else {
+ i2c_inb(adap); /* dummy read */
+ }
+ }
- return (rdcount);
+ return (i - 1);
}
@@ -419,14 +354,8 @@
struct i2c_algo_pcf_data *adap = i2c_adap->algo_data;
struct i2c_msg *pmsg;
- int i = 0;
- int ret, timeout, status;
-
- pmsg = &msgs[i];
-
- /* Send address here if Read */
- if (pmsg->flags & I2C_M_RD) {
- ret = pcf_doAddress(adap, pmsg, i2c_adap->retries);
- }
+ int i;
+ int ret=0, timeout, status;
+
/* Check for bus busy */
timeout = wait_for_bb(adap);
@@ -436,58 +365,66 @@
return -EIO;
}
+
+ for (i = 0;ret >= 0 && i < num; i++) {
+ pmsg = &msgs[i];
+
+ DEB2(printk("i2c-algo-pcf.o: Doing %s %d bytes to 0x%02x - %d of %d messages\n",
+ pmsg->flags & I2C_M_RD ? "read" : "write",
+ pmsg->len, pmsg->addr, i + 1, num);)
- /* Send address here if Write */
- if (!(pmsg->flags & I2C_M_RD)) {
ret = pcf_doAddress(adap, pmsg, i2c_adap->retries);
- }
- /* Send START */
- i2c_start(adap);
+
+ /* Send START */
+ if (i == 0) {
+ i2c_start(adap);
+ }
- /* Wait for PIN (pending interrupt NOT) */
- timeout = wait_for_pin(adap, &status);
- if (timeout) {
- i2c_stop(adap);
- DEB2(printk("i2c-algo-pcf.o: Timeout waiting "
- "for PIN(1) in pcf_xfer\n");)
- return (-EREMOTEIO);
- }
+ /* Wait for PIN (pending interrupt NOT) */
+ timeout = wait_for_pin(adap, &status);
+ if (timeout) {
+ i2c_stop(adap);
+ DEB2(printk("i2c-algo-pcf.o: Timeout waiting "
+ "for PIN(1) in pcf_xfer\n");)
+ return (-EREMOTEIO);
+ }
#ifndef STUB_I2C
- /* Check LRB (last rcvd bit - slave ack) */
- if (status & I2C_PCF_LRB) {
- i2c_stop(adap);
- DEB2(printk("i2c-algo-pcf.o: No LRB(1) in pcf_xfer\n");)
- return (-EREMOTEIO);
- }
+ /* Check LRB (last rcvd bit - slave ack) */
+ if (status & I2C_PCF_LRB) {
+ i2c_stop(adap);
+ DEB2(printk("i2c-algo-pcf.o: No LRB(1) in pcf_xfer\n");)
+ return (-EREMOTEIO);
+ }
#endif
- DEB3(printk("i2c-algo-pcf.o: Msg %d, addr=0x%x, flags=0x%x, len=%d\n",
- i, msgs[i].addr, msgs[i].flags, msgs[i].len);)
+ DEB3(printk("i2c-algo-pcf.o: Msg %d, addr=0x%x, flags=0x%x, len=%d\n",
+ i, msgs[i].addr, msgs[i].flags, msgs[i].len);)
- /* Read */
- if (pmsg->flags & I2C_M_RD) {
-
- /* read bytes into buffer*/
- ret = pcf_readbytes(i2c_adap, pmsg->buf, pmsg->len);
-
- if (ret != pmsg->len) {
- DEB2(printk("i2c-algo-pcf.o: fail: "
- "only read %d bytes.\n",ret));
- } else {
- DEB2(printk("i2c-algo-pcf.o: read %d bytes.\n",ret));
- }
- } else { /* Write */
+ /* Read */
+ if (pmsg->flags & I2C_M_RD) {
+ /* read bytes into buffer*/
+ ret = pcf_readbytes(i2c_adap, pmsg->buf, pmsg->len,
+ (i + 1 == num));
- /* Write bytes from buffer */
- ret = pcf_sendbytes(i2c_adap, pmsg->buf, pmsg->len);
+ if (ret != pmsg->len) {
+ DEB2(printk("i2c-algo-pcf.o: fail: "
+ "only read %d bytes.\n",ret));
+ } else {
+ DEB2(printk("i2c-algo-pcf.o: read %d bytes.\n",ret));
+ }
+ } else { /* Write */
+ ret = pcf_sendbytes(i2c_adap, pmsg->buf, pmsg->len,
+ (i + 1 == num));
- if (ret != pmsg->len) {
- DEB2(printk("i2c-algo-pcf.o: fail: "
- "only wrote %d bytes.\n",ret));
- } else {
- DEB2(printk("i2c-algo-pcf.o: wrote %d bytes.\n",ret));
+ if (ret != pmsg->len) {
+ DEB2(printk("i2c-algo-pcf.o: fail: "
+ "only wrote %d bytes.\n",ret));
+ } else {
+ DEB2(printk("i2c-algo-pcf.o: wrote %d bytes.\n",ret));
+ }
}
}
- return (num);
+
+ return (i);
}
@@ -525,10 +462,4 @@
struct i2c_algo_pcf_data *pcf_adap = adap->algo_data;
- if (pcf_test) {
- int ret = test_bus(pcf_adap, adap->name);
- if (ret<0)
- return -ENODEV;
- }
-
DEB2(printk("i2c-algo-pcf.o: hw routines for %s registered.\n",
adap->name));
@@ -539,7 +470,11 @@
adap->algo = &pcf_algo;
- adap->timeout = 100; /* default values, should */
+ adap->timeout = 100; /* default values, should */
adap->retries = 3; /* be replaced by defines */
+ if ((i = pcf_init_8584(pcf_adap))) {
+ return i;
+ }
+
#ifdef MODULE
MOD_INC_USE_COUNT;
@@ -547,5 +482,4 @@
i2c_add_adapter(adap);
- pcf_init_8584(pcf_adap);
/* scan bus */
@@ -554,4 +488,9 @@
adap->name);
for (i = 0x00; i < 0xff; i+=2) {
+ if (wait_for_bb(pcf_adap)) {
+ printk(KERN_INFO " i2c-algo-pcf.o: scanning bus %s - TIMEOUTed.\n",
+ adap->name);
+ break;
+ }
i2c_outb(pcf_adap, i);
i2c_start(pcf_adap);
@@ -598,9 +537,7 @@
MODULE_DESCRIPTION("I2C-Bus PCF8584 algorithm");
-MODULE_PARM(pcf_test, "i");
MODULE_PARM(pcf_scan, "i");
MODULE_PARM(i2c_debug,"i");
-MODULE_PARM_DESC(pcf_test, "Test if the I2C bus is available");
MODULE_PARM_DESC(pcf_scan, "Scan for active chips on the bus");
MODULE_PARM_DESC(i2c_debug,
--- linux-old/drivers/i2c/i2c-core.c Mon Jul 23 01:39:52 CEST 2001
+++ linux/drivers/i2c/i2c-core.c Mon Jul 23 01:39:52 CEST 2001
@@ -21,5 +21,5 @@
All SMBus-related things are written by Frodo Looijaard <frodol@dds.nl> */
-/* $Id: i2c-core.c,v 1.58 2000/10/29 22:57:38 frodo Exp $ */
+/* $Id: i2c-core.c,v 1.61 2001/06/05 01:50:31 mds Exp $ */
#include <linux/module.h>
@@ -249,5 +249,5 @@
if ((res=client->driver->detach_client(client))) {
printk("i2c-core.o: adapter %s not "
- "unregisted, because client at "
+ "unregistered, because client at "
"address %02x can't be detached. ",
adap->name, client->addr);
@@ -659,5 +659,5 @@
int order[I2C_CLIENT_MAX];
- if (count < 0)
+ if (count > 4000)
return -EINVAL;
len_total = file->f_pos + count;
@@ -1278,12 +1278,36 @@
#ifndef MODULE
+#ifdef CONFIG_I2C_CHARDEV
extern int i2c_dev_init(void);
+#endif
+#ifdef CONFIG_I2C_ALGOBIT
extern int i2c_algo_bit_init(void);
+#endif
+#ifdef CONFIG_I2C_BITLP
extern int i2c_bitlp_init(void);
+#endif
+#ifdef CONFIG_I2C_BITELV
extern int i2c_bitelv_init(void);
+#endif
+#ifdef CONFIG_I2C_BITVELLE
extern int i2c_bitvelle_init(void);
+#endif
+#ifdef CONFIG_I2C_BITVIA
extern int i2c_bitvia_init(void);
+#endif
+
+#ifdef CONFIG_I2C_ALGOPCF
extern int i2c_algo_pcf_init(void);
+#endif
+#ifdef CONFIG_I2C_PCFISA
extern int i2c_pcfisa_init(void);
+#endif
+
+#ifdef CONFIG_I2C_ALGO8XX
+ extern int i2c_algo_8xx_init(void);
+#endif
+#ifdef CONFIG_I2C_RPXLITE
+ extern int i2c_rpx_init(void);
+#endif
/* This is needed for automatic patch generation: sensors code starts here */
@@ -1318,4 +1342,12 @@
#ifdef CONFIG_I2C_ELEKTOR
i2c_pcfisa_init();
+#endif
+
+ /* --------------------- 8xx -------- */
+#ifdef CONFIG_I2C_ALGO8XX
+ i2c_algo_8xx_init();
+#endif
+#ifdef CONFIG_I2C_RPXLITE
+ i2c_rpx_init();
#endif
/* This is needed for automatic patch generation: sensors code starts here */
--- linux-old/drivers/i2c/i2c-dev.c Mon Jul 23 01:39:53 CEST 2001
+++ linux/drivers/i2c/i2c-dev.c Mon Jul 23 01:39:53 CEST 2001
@@ -29,5 +29,5 @@
<pmhahn@titan.lahn.de> */
-/* $Id: i2c-dev.c,v 1.36 2000/09/22 02:19:35 mds Exp $ */
+/* $Id: i2c-dev.c,v 1.38 2001/04/27 17:53:04 frodo Exp $ */
#include <linux/config.h>
@@ -242,7 +242,4 @@
return -EFAULT;
- if(rdwr_arg.nmsgs > 2048)
- return -EINVAL;
-
rdwr_pa = (struct i2c_msg *)
kmalloc(rdwr_arg.nmsgs * sizeof(struct i2c_msg),
@@ -520,5 +517,5 @@
return res;
}
- i2cdev_initialized ++;
+ i2cdev_initialized --;
}
--- linux-old/drivers/i2c/i2c-elektor.c Mon Jul 23 01:39:54 CEST 2001
+++ linux/drivers/i2c/i2c-elektor.c Mon Jul 23 01:39:54 CEST 2001
@@ -23,5 +23,6 @@
Frodo Looijaard <frodol@dds.nl> */
-/* $Id: i2c-elektor.c,v 1.19 2000/07/25 23:52:17 frodo Exp $ */
+/* Partialy rewriten by Oleg I. Vdovikin for mmapped support of
+ for Alpha Processor Inc. UP-2000(+) boards */
#include <linux/kernel.h>
@@ -32,4 +33,5 @@
#include <linux/version.h>
#include <linux/init.h>
+#include <linux/pci.h>
#include <asm/irq.h>
#include <asm/io.h>
@@ -40,15 +42,18 @@
#include "i2c-pcf8584.h"
-#define DEFAULT_BASE 0x300
-#define DEFAULT_IRQ 0
-#define DEFAULT_CLOCK 0x1c
-#define DEFAULT_OWN 0x55
-
-static int base = 0;
-static int irq = 0;
-static int clock = 0;
-static int own = 0;
-static int i2c_debug=0;
-static struct i2c_pcf_isa gpi;
+#define DEFAULT_BASE 0x330
+
+static int base = 0;
+static int irq = 0;
+static int clock = 0x1c;
+static int own = 0x55;
+static int mmapped = 0;
+static int i2c_debug = 0;
+
+/* vdovikin: removed static struct i2c_pcf_isa gpi; code -
+ this module in real supports only one device, due to missing arguments
+ in some functions, called from the algo-pcf module. Sometimes it's
+ need to be rewriten - but for now just remove this for simpler reading */
+
#if (LINUX_VERSION_CODE < 0x020301)
static struct wait_queue *pcf_wait = NULL;
@@ -64,31 +69,27 @@
#define DEBE(x) x /* error messages */
-
-/* --- Convenience defines for the i2c port: */
-#define BASE ((struct i2c_pcf_isa *)(data))->pi_base
-#define DATA BASE /* Adapter data port */
-#define CTRL (BASE+1) /* Adapter control port */
-
/* ----- local functions ---------------------------------------------- */
static void pcf_isa_setbyte(void *data, int ctl, int val)
{
- unsigned long j = jiffies + 10;
+ int address = ctl ? (base + 1) : base;
- if (ctl) {
- if (gpi.pi_irq > 0) {
- DEB3(printk("i2c-elektor.o: Write Ctrl 0x%02X\n",
- val|I2C_PCF_ENI));
- DEB3({while (jiffies < j) schedule();})
- outb(val | I2C_PCF_ENI, CTRL);
- } else {
- DEB3(printk("i2c-elektor.o: Write Ctrl 0x%02X\n", val|I2C_PCF_ENI));
- DEB3({while (jiffies < j) schedule();})
- outb(val|I2C_PCF_ENI, CTRL);
- }
- } else {
- DEB3(printk("i2c-elektor.o: Write Data 0x%02X\n", val&0xff));
- DEB3({while (jiffies < j) schedule();})
- outb(val, DATA);
+ if (ctl && irq) {
+ val |= I2C_PCF_ENI;
+ }
+
+ DEB3(printk("i2c-elektor.o: Write 0x%X 0x%02X\n", address, val & 255));
+
+ switch (mmapped) {
+ case 0: /* regular I/O */
+ outb(val, address);
+ break;
+ case 2: /* double mapped I/O needed for UP2000 board,
+ I don't know why this... */
+ writeb(val, address);
+ /* fall */
+ case 1: /* memory mapped I/O */
+ writeb(val, address);
+ break;
}
}
@@ -96,13 +97,9 @@
static int pcf_isa_getbyte(void *data, int ctl)
{
- int val;
+ int address = ctl ? (base + 1) : base;
+ int val = mmapped ? readb(address) : inb(address);
+
+ DEB3(printk("i2c-elektor.o: Read 0x%X 0x%02X\n", address, val));
- if (ctl) {
- val = inb(CTRL);
- DEB3(printk("i2c-elektor.o: Read Ctrl 0x%02X\n", val));
- } else {
- val = inb(DATA);
- DEB3(printk("i2c-elektor.o: Read Data 0x%02X\n", val));
- }
return (val);
}
@@ -110,5 +107,5 @@
static int pcf_isa_getown(void *data)
{
- return (gpi.pi_own);
+ return (own);
}
@@ -116,16 +113,6 @@
static int pcf_isa_getclock(void *data)
{
- return (gpi.pi_clock);
-}
-
-
-
-#if 0
-static void pcf_isa_sleep(unsigned long timeout)
-{
- schedule_timeout( timeout * HZ);
+ return (clock);
}
-#endif
-
static void pcf_isa_waitforpin(void) {
@@ -133,10 +120,10 @@
int timeout = 2;
- if (gpi.pi_irq > 0) {
+ if (irq > 0) {
cli();
- if (pcf_pending == 0) {
- interruptible_sleep_on_timeout(&pcf_wait, timeout*HZ );
- } else
- pcf_pending = 0;
+ if (pcf_pending == 0) {
+ interruptible_sleep_on_timeout(&pcf_wait, timeout*HZ );
+ } else
+ pcf_pending = 0;
sti();
} else {
@@ -154,16 +141,18 @@
static int pcf_isa_init(void)
{
- if (check_region(gpi.pi_base, 2) < 0 ) {
- return -ENODEV;
- } else {
- request_region(gpi.pi_base, 2, "i2c (isa bus adapter)");
+ if (!mmapped) {
+ if (check_region(base, 2) < 0 ) {
+ printk("i2c-elektor.o: requested I/O region (0x%X:2) is in use.\n", base);
+ return -ENODEV;
+ } else {
+ request_region(base, 2, "i2c (isa bus adapter)");
+ }
}
- if (gpi.pi_irq > 0) {
- if (request_irq(gpi.pi_irq, pcf_isa_handler, 0, "PCF8584", 0)
- < 0) {
- printk("i2c-elektor.o: Request irq%d failed\n", gpi.pi_irq);
- gpi.pi_irq = 0;
- } else
- enable_irq(gpi.pi_irq);
+ if (irq > 0) {
+ if (request_irq(irq, pcf_isa_handler, 0, "PCF8584", 0) < 0) {
+ printk("i2c-elektor.o: Request irq%d failed\n", irq);
+ irq = 0;
+ } else
+ enable_irq(irq);
}
return 0;
@@ -173,9 +162,11 @@
static void pcf_isa_exit(void)
{
- if (gpi.pi_irq > 0) {
- disable_irq(gpi.pi_irq);
- free_irq(gpi.pi_irq, 0);
+ if (irq > 0) {
+ disable_irq(irq);
+ free_irq(irq, 0);
+ }
+ if (!mmapped) {
+ release_region(base , 2);
}
- release_region(gpi.pi_base , 2);
}
@@ -218,5 +209,5 @@
pcf_isa_getclock,
pcf_isa_waitforpin,
- 80, 80, 100, /* waits, timeout */
+ 10, 10, 100, /* waits, timeout */
};
@@ -234,29 +225,59 @@
int __init i2c_pcfisa_init(void)
{
+#ifdef __alpha__
+ /* check to see we have memory mapped PCF8584 connected to the
+ Cypress cy82c693 PCI-ISA bridge as on UP2000 board */
+ if ((base == 0) && pci_present()) {
+
+ struct pci_dev *cy693_dev =
+ pci_find_device(PCI_VENDOR_ID_CONTAQ,
+ PCI_DEVICE_ID_CONTAQ_82C693, NULL);
+
+ if (cy693_dev) {
+ char config;
+ /* yeap, we've found cypress, let's check config */
+ if (!pci_read_config_byte(cy693_dev, 0x47, &config)) {
+
+ DEB3(printk("i2c-elektor.o: found cy82c693, config register 0x47 = 0x%02x.\n", config));
+
+ /* UP2000 board has this register set to 0xe1,
+ but the most significant bit as seems can be
+ reset during the proper initialisation
+ sequence if guys from API decides to do that
+ (so, we can even enable Tsunami Pchip
+ window for the upper 1 Gb) */
+
+ /* so just check for ROMCS at 0xe0000,
+ ROMCS enabled for writes
+ and external XD Bus buffer in use. */
+ if ((config & 0x7f) == 0x61) {
+ /* seems to be UP2000 like board */
+ base = 0xe0000;
+ /* I don't know why we need to
+ write twice */
+ mmapped = 2;
+ /* UP2000 drives ISA with
+ 8.25 MHz (PCI/4) clock
+ (this can be read from cypress) */
+ clock = I2C_PCF_CLK | I2C_PCF_TRNS90;
+ printk("i2c-elektor.o: found API UP2000 like board, will probe PCF8584 later.\n");
+ }
+ }
+ }
+ }
+#endif
- struct i2c_pcf_isa *pisa = &gpi;
+ /* sanity checks for mmapped I/O */
+ if (mmapped && base < 0xc8000) {
+ printk("i2c-elektor.o: incorrect base address (0x%0X) specified for mmapped I/O.\n", base);
+ return -ENODEV;
+ }
printk("i2c-elektor.o: i2c pcf8584-isa adapter module\n");
- if (base == 0)
- pisa->pi_base = DEFAULT_BASE;
- else
- pisa->pi_base = base;
-
- if (irq == 0)
- pisa->pi_irq = DEFAULT_IRQ;
- else
- pisa->pi_irq = irq;
-
- if (clock == 0)
- pisa->pi_clock = DEFAULT_CLOCK;
- else
- pisa->pi_clock = clock;
-
- if (own == 0)
- pisa->pi_own = DEFAULT_OWN;
- else
- pisa->pi_own = own;
- pcf_isa_data.data = (void *)pisa;
+ if (base == 0) {
+ base = DEFAULT_BASE;
+ }
+
#if (LINUX_VERSION_CODE >= 0x020301)
init_waitqueue_head(&pcf_wait);
@@ -268,5 +289,7 @@
return -ENODEV;
}
- printk("i2c-elektor.o: found device at %#x.\n", pisa->pi_base);
+
+ printk("i2c-elektor.o: found device at %#x.\n", base);
+
return 0;
}
@@ -283,5 +306,6 @@
MODULE_PARM(clock, "i");
MODULE_PARM(own, "i");
-MODULE_PARM(i2c_debug,"i");
+MODULE_PARM(mmapped, "i");
+MODULE_PARM(i2c_debug, "i");
int init_module(void)
--- linux-old/include/linux/i2c-elektor.h Mon Jul 23 01:39:54 CEST 2001
+++ linux/include/linux/i2c-elektor.h Mon Jul 23 01:39:54 CEST 2001
@@ -23,5 +23,5 @@
Frodo Looijaard <frodol@dds.nl> */
-/* $Id: i2c-elektor.h,v 1.4 2000/01/18 23:54:07 frodo Exp $ */
+/* $Id: i2c-elektor.h,v 1.5 2001/06/05 01:46:33 mds Exp $ */
#ifndef I2C_PCF_ELEKTOR_H
@@ -29,8 +29,12 @@
/*
- * This struct contains the hw-dependent functions of PCF8584 adapters to
- * manipulate the registers, and to init any hw-specific features.
- */
+ * This struct contains the hw-dependent functions of PCF8584 adapters to
+ * manipulate the registers, and to init any hw-specific features.
+ * vdovikin: removed: this module in real supports only one device,
+ * due to missing arguments in some functions, called from the algo-pcf module.
+ * Sometimes it's need to be rewriten -
+ * but for now just remove this for simpler reading */
+/*
struct i2c_pcf_isa {
int pi_base;
@@ -39,5 +43,5 @@
int pi_own;
};
-
+*/
#endif /* PCF_ELEKTOR_H */
--- linux-old/include/linux/i2c-id.h Mon Jul 23 01:39:55 CEST 2001
+++ linux/include/linux/i2c-id.h Mon Jul 23 01:39:55 CEST 2001
@@ -21,5 +21,5 @@
/* ------------------------------------------------------------------------- */
-/* $Id: i2c-id.h,v 1.25 2000/10/12 07:27:29 simon Exp $ */
+/* $Id: i2c-id.h,v 1.33 2001/06/06 06:16:53 simon Exp $ */
#ifndef I2C_ID_H
@@ -66,5 +66,5 @@
#define I2C_DRIVERID_TDA9850 20 /* audio mixer */
#define I2C_DRIVERID_TDA9855 21 /* audio mixer */
-#define I2C_DRIVERID_SAA7110 22 /* */
+#define I2C_DRIVERID_SAA7110 22 /* video decoder */
#define I2C_DRIVERID_MGATVO 23 /* Matrox TVOut */
#define I2C_DRIVERID_SAA5249 24 /* SAA5249 and compatibles */
@@ -85,5 +85,10 @@
#define I2C_DRIVERID_SAA7113 38 /* video decoder */
#define I2C_DRIVERID_TDA8444 39 /* octuple 6-bit DAC */
-
+#define I2C_DRIVERID_BT819 40 /* video decoder */
+#define I2C_DRIVERID_BT856 41 /* video encoder */
+#define I2C_DRIVERID_VPX32XX 42 /* video decoder+vbi/vtxt */
+#define I2C_DRIVERID_DRP3510 43 /* ADR decoder (Astra Radio) */
+#define I2C_DRIVERID_SP5055 44 /* Satellite tuner */
+#define I2C_DRIVERID_STV0030 45 /* Multipurpose switch */
#define I2C_DRIVERID_EXP0 0xF0 /* experimental use id's */
@@ -95,4 +100,32 @@
#define I2C_DRIVERID_I2CPROC 901
+/* IDs -- Use DRIVERIDs 1000-1999 for sensors.
+ These were originally in sensors.h in the lm_sensors package */
+#define I2C_DRIVERID_LM78 1002
+#define I2C_DRIVERID_LM75 1003
+#define I2C_DRIVERID_GL518 1004
+#define I2C_DRIVERID_EEPROM 1005
+#define I2C_DRIVERID_W83781D 1006
+#define I2C_DRIVERID_LM80 1007
+#define I2C_DRIVERID_ADM1021 1008
+#define I2C_DRIVERID_ADM9240 1009
+#define I2C_DRIVERID_LTC1710 1010
+#define I2C_DRIVERID_SIS5595 1011
+#define I2C_DRIVERID_ICSPLL 1012
+#define I2C_DRIVERID_BT869 1013
+#define I2C_DRIVERID_MAXILIFE 1014
+#define I2C_DRIVERID_MATORB 1015
+#define I2C_DRIVERID_GL520 1016
+#define I2C_DRIVERID_THMC50 1017
+#define I2C_DRIVERID_DDCMON 1018
+#define I2C_DRIVERID_VIA686A 1019
+#define I2C_DRIVERID_ADM1025 1020
+#define I2C_DRIVERID_LM87 1021
+#define I2C_DRIVERID_PCF8574 1022
+#define I2C_DRIVERID_MTP008 1023
+#define I2C_DRIVERID_DS1621 1024
+#define I2C_DRIVERID_ADM1024 1025
+#define I2C_DRIVERID_IT87 1026
+
/*
* ---- Adapter types ----------------------------------------------------
@@ -142,5 +175,5 @@
#define I2C_HW_B_RIVA 0x10 /* Riva based graphics cards */
#define I2C_HW_B_IOC 0x11 /* IOC bit-wiggling */
-
+#define I2C_HW_B_TSUNA 0x12 /* DEC Tsunami chipset */
/* --- PCF 8584 based algorithms */
#define I2C_HW_P_LP 0x00 /* Parallel port interface */
--- linux-old/drivers/i2c/i2c-proc.c Mon Jul 23 01:39:58 CEST 2001
+++ linux/drivers/i2c/i2c-proc.c Mon Jul 23 01:39:58 CEST 2001
@@ -0,0 +1,906 @@
+/*
+ i2c-proc.c - Part of lm_sensors, Linux kernel modules for hardware
+ monitoring
+ Copyright (c) 1998 - 2001 Frodo Looijaard <frodol@dds.nl> and
+ Mark D. Studebaker <mdsxyz123@yahoo.com>
+
+ 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.
+*/
+
+/*
+ This driver puts entries in /proc/sys/dev/sensors for each I2C device
+*/
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/ctype.h>
+#include <linux/sysctl.h>
+#include <linux/proc_fs.h>
+#include <linux/ioport.h>
+#include <asm/uaccess.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c-proc.h>
+
+#include <linux/init.h>
+
+/* FIXME need i2c versioning */
+#define LM_DATE "20010228"
+#define LM_VERSION "2.6.0"
+
+#ifndef THIS_MODULE
+#define THIS_MODULE NULL
+#endif
+
+static int i2c_create_name(char **name, const char *prefix,
+ struct i2c_adapter *adapter, int addr);
+static int i2c_parse_reals(int *nrels, void *buffer, int bufsize,
+ long *results, int magnitude);
+static int i2c_write_reals(int nrels, void *buffer, int *bufsize,
+ long *results, int magnitude);
+static int i2c_proc_chips(ctl_table * ctl, int write,
+ struct file *filp, void *buffer,
+ size_t * lenp);
+static int i2c_sysctl_chips(ctl_table * table, int *name, int nlen,
+ void *oldval, size_t * oldlenp,
+ void *newval, size_t newlen,
+ void **context);
+
+int __init sensors_init(void);
+
+#define SENSORS_ENTRY_MAX 20
+static struct ctl_table_header *i2c_entries[SENSORS_ENTRY_MAX];
+
+static struct i2c_client *i2c_clients[SENSORS_ENTRY_MAX];
+static unsigned short i2c_inodes[SENSORS_ENTRY_MAX];
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,1)
+static void i2c_fill_inode(struct inode *inode, int fill);
+static void i2c_dir_fill_inode(struct inode *inode, int fill);
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,3,1) */
+
+static ctl_table sysctl_table[] = {
+ {CTL_DEV, "dev", NULL, 0, 0555},
+ {0},
+ {DEV_SENSORS, "sensors", NULL, 0, 0555},
+ {0},
+ {0, NULL, NULL, 0, 0555},
+ {0}
+};
+
+static ctl_table i2c_proc_dev_sensors[] = {
+ {SENSORS_CHIPS, "chips", NULL, 0, 0644, NULL, &i2c_proc_chips,
+ &i2c_sysctl_chips},
+ {0}
+};
+
+static ctl_table i2c_proc_dev[] = {
+ {DEV_SENSORS, "sensors", NULL, 0, 0555, i2c_proc_dev_sensors},
+ {0},
+};
+
+
+static ctl_table i2c_proc[] = {
+ {CTL_DEV, "dev", NULL, 0, 0555, i2c_proc_dev},
+ {0}
+};
+
+
+static struct ctl_table_header *i2c_proc_header;
+static int i2c_initialized;
+
+/* This returns a nice name for a new directory; for example lm78-isa-0310
+ (for a LM78 chip on the ISA bus at port 0x310), or lm75-i2c-3-4e (for
+ a LM75 chip on the third i2c bus at address 0x4e).
+ name is allocated first. */
+int i2c_create_name(char **name, const char *prefix,
+ struct i2c_adapter *adapter, int addr)
+{
+ char name_buffer[50];
+ int id;
+ if (i2c_is_isa_adapter(adapter))
+ sprintf(name_buffer, "%s-isa-%04x", prefix, addr);
+ else {
+ if ((id = i2c_adapter_id(adapter)) < 0)
+ return -ENOENT;
+ sprintf(name_buffer, "%s-i2c-%d-%02x", prefix, id, addr);
+ }
+ *name = kmalloc(strlen(name_buffer) + 1, GFP_KERNEL);
+ strcpy(*name, name_buffer);
+ return 0;
+}
+
+/* This rather complex function must be called when you want to add an entry
+ to /proc/sys/dev/sensors/chips. It also creates a new directory within
+ /proc/sys/dev/sensors/.
+ ctl_template should be a template of the newly created directory. It is
+ copied in memory. The extra2 field of each file is set to point to client.
+ If any driver wants subdirectories within the newly created directory,
+ this function must be updated!
+ controlling_mod is the controlling module. It should usually be
+ THIS_MODULE when calling. Note that this symbol is not defined in
+ kernels before 2.3.13; define it to NULL in that case. We will not use it
+ for anything older than 2.3.27 anyway. */
+int i2c_register_entry(struct i2c_client *client, const char *prefix,
+ ctl_table * ctl_template,
+ struct module *controlling_mod)
+{
+ int i, res, len, id;
+ ctl_table *new_table;
+ char *name;
+ struct ctl_table_header *new_header;
+
+ if ((res = i2c_create_name(&name, prefix, client->adapter,
+ client->addr))) return res;
+
+ for (id = 0; id < SENSORS_ENTRY_MAX; id++)
+ if (!i2c_entries[id]) {
+ break;
+ }
+ if (id == SENSORS_ENTRY_MAX) {
+ kfree(name);
+ return -ENOMEM;
+ }
+ id += 256;
+
+ len = 0;
+ while (ctl_template[len].procname)
+ len++;
+ len += 7;
+ if (!(new_table = kmalloc(sizeof(ctl_table) * len, GFP_KERNEL))) {
+ kfree(name);
+ return -ENOMEM;
+ }
+
+ memcpy(new_table, sysctl_table, 6 * sizeof(ctl_table));
+ new_table[0].child = &new_table[2];
+ new_table[2].child = &new_table[4];
+ new_table[4].child = &new_table[6];
+ new_table[4].procname = name;
+ new_table[4].ctl_name = id;
+ memcpy(new_table + 6, ctl_template, (len - 6) * sizeof(ctl_table));
+ for (i = 6; i < len; i++)
+ new_table[i].extra2 = client;
+
+ if (!(new_header = register_sysctl_table(new_table, 0))) {
+ kfree(new_table);
+ kfree(name);
+ return -ENOMEM;
+ }
+
+ i2c_entries[id - 256] = new_header;
+
+ i2c_clients[id - 256] = client;
+#ifdef DEBUG
+ if (!new_header || !new_header->ctl_table ||
+ !new_header->ctl_table->child ||
+ !new_header->ctl_table->child->child ||
+ !new_header->ctl_table->child->child->de) {
+ printk
+ ("i2c-proc.o: NULL pointer when trying to install fill_inode fix!\n");
+ return id;
+ }
+#endif /* DEBUG */
+ i2c_inodes[id - 256] =
+ new_header->ctl_table->child->child->de->low_ino;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,27))
+ new_header->ctl_table->child->child->de->owner = controlling_mod;
+#else
+ new_header->ctl_table->child->child->de->fill_inode =
+ &i2c_dir_fill_inode;
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,27)) */
+
+ return id;
+}
+
+void i2c_deregister_entry(int id)
+{
+ ctl_table *table;
+ char *temp;
+ id -= 256;
+ if (i2c_entries[id]) {
+ table = i2c_entries[id]->ctl_table;
+ unregister_sysctl_table(i2c_entries[id]);
+ /* 2-step kfree needed to keep gcc happy about const points */
+ (const char *) temp = table[4].procname;
+ kfree(temp);
+ kfree(table);
+ i2c_entries[id] = NULL;
+ i2c_clients[id] = NULL;
+ }
+}
+
+/* Monitor access for /proc/sys/dev/sensors; make unloading i2c-proc.o
+ impossible if some process still uses it or some file in it */
+void i2c_fill_inode(struct inode *inode, int fill)
+{
+ if (fill)
+ MOD_INC_USE_COUNT;
+ else
+ MOD_DEC_USE_COUNT;
+}
+
+/* Monitor access for /proc/sys/dev/sensors/ directories; make unloading
+ the corresponding module impossible if some process still uses it or
+ some file in it */
+void i2c_dir_fill_inode(struct inode *inode, int fill)
+{
+ int i;
+ struct i2c_client *client;
+
+#ifdef DEBUG
+ if (!inode) {
+ printk("i2c-proc.o: Warning: inode NULL in fill_inode()\n");
+ return;
+ }
+#endif /* def DEBUG */
+
+ for (i = 0; i < SENSORS_ENTRY_MAX; i++)
+ if (i2c_clients[i]
+ && (i2c_inodes[i] == inode->i_ino)) break;
+#ifdef DEBUG
+ if (i == SENSORS_ENTRY_MAX) {
+ printk
+ ("i2c-proc.o: Warning: inode (%ld) not found in fill_inode()\n",
+ inode->i_ino);
+ return;
+ }
+#endif /* def DEBUG */
+ client = i2c_clients[i];
+ if (fill)
+ client->driver->inc_use(client);
+ else
+ client->driver->dec_use(client);
+}
+
+int i2c_proc_chips(ctl_table * ctl, int write, struct file *filp,
+ void *buffer, size_t * lenp)
+{
+ char BUF[SENSORS_PREFIX_MAX + 30];
+ int buflen, curbufsize, i;
+ struct ctl_table *client_tbl;
+
+ if (write)
+ return 0;
+
+ /* If buffer is size 0, or we try to read when not at the start, we
+ return nothing. Note that I think writing when not at the start
+ does not work either, but anyway, this is straight from the kernel
+ sources. */
+ if (!*lenp || (filp->f_pos && !write)) {
+ *lenp = 0;
+ return 0;
+ }
+ curbufsize = 0;
+ for (i = 0; i < SENSORS_ENTRY_MAX; i++)
+ if (i2c_entries[i]) {
+ client_tbl =
+ i2c_entries[i]->ctl_table->child->child;
+ buflen =
+ sprintf(BUF, "%d\t%s\n", client_tbl->ctl_name,
+ client_tbl->procname);
+ if (buflen + curbufsize > *lenp)
+ buflen = *lenp - curbufsize;
+ if(copy_to_user(buffer, BUF, buflen))
+ return -EFAULT;
+ curbufsize += buflen;
+ (char *) buffer += buflen;
+ }
+ *lenp = curbufsize;
+ filp->f_pos += curbufsize;
+ return 0;
+}
+
+int i2c_sysctl_chips(ctl_table * table, int *name, int nlen,
+ void *oldval, size_t * oldlenp, void *newval,
+ size_t newlen, void **context)
+{
+ struct i2c_chips_data data;
+ int i, oldlen, nrels, maxels,ret=0;
+ struct ctl_table *client_tbl;
+
+ if (oldval && oldlenp && !((ret = get_user(oldlen, oldlenp))) &&
+ oldlen) {
+ maxels = oldlen / sizeof(struct i2c_chips_data);
+ nrels = 0;
+ for (i = 0; (i < SENSORS_ENTRY_MAX) && (nrels < maxels);
+ i++)
+ if (i2c_entries[i]) {
+ client_tbl =
+ i2c_entries[i]->ctl_table->child->
+ child;
+ data.sysctl_id = client_tbl->ctl_name;
+ strcpy(data.name, client_tbl->procname);
+ if(copy_to_user(oldval, &data,
+ sizeof(struct
+ i2c_chips_data)))
+ return -EFAULT;
+ (char *) oldval +=
+ sizeof(struct i2c_chips_data);
+ nrels++;
+ }
+ oldlen = nrels * sizeof(struct i2c_chips_data);
+ if(put_user(oldlen, oldlenp))
+ return -EFAULT;
+ }
+ return ret;
+}
+
+
+/* This funcion reads or writes a 'real' value (encoded by the combination
+ of an integer and a magnitude, the last is the power of ten the value
+ should be divided with) to a /proc/sys directory. To use this function,
+ you must (before registering the ctl_table) set the extra2 field to the
+ client, and the extra1 field to a function of the form:
+ void func(struct i2c_client *client, int operation, int ctl_name,
+ int *nrels_mag, long *results)
+ This function can be called for three values of operation. If operation
+ equals SENSORS_PROC_REAL_INFO, the magnitude should be returned in
+ nrels_mag. If operation equals SENSORS_PROC_REAL_READ, values should
+ be read into results. nrels_mag should return the number of elements
+ read; the maximum number is put in it on entry. Finally, if operation
+ equals SENSORS_PROC_REAL_WRITE, the values in results should be
+ written to the chip. nrels_mag contains on entry the number of elements
+ found.
+ In all cases, client points to the client we wish to interact with,
+ and ctl_name is the SYSCTL id of the file we are accessing. */
+int i2c_proc_real(ctl_table * ctl, int write, struct file *filp,
+ void *buffer, size_t * lenp)
+{
+#define MAX_RESULTS 32
+ int mag, nrels = MAX_RESULTS;
+ long results[MAX_RESULTS];
+ i2c_real_callback callback = ctl->extra1;
+ struct i2c_client *client = ctl->extra2;
+ int res;
+
+ /* If buffer is size 0, or we try to read when not at the start, we
+ return nothing. Note that I think writing when not at the start
+ does not work either, but anyway, this is straight from the kernel
+ sources. */
+ if (!*lenp || (filp->f_pos && !write)) {
+ *lenp = 0;
+ return 0;
+ }
+
+ /* Get the magnitude */
+ callback(client, SENSORS_PROC_REAL_INFO, ctl->ctl_name, &mag,
+ NULL);
+
+ if (write) {
+ /* Read the complete input into results, converting to longs */
+ res = i2c_parse_reals(&nrels, buffer, *lenp, results, mag);
+ if (res)
+ return res;
+
+ if (!nrels)
+ return 0;
+
+ /* Now feed this information back to the client */
+ callback(client, SENSORS_PROC_REAL_WRITE, ctl->ctl_name,
+ &nrels, results);
+
+ filp->f_pos += *lenp;
+ return 0;
+ } else { /* read */
+ /* Get the information from the client into results */
+ callback(client, SENSORS_PROC_REAL_READ, ctl->ctl_name,
+ &nrels, results);
+
+ /* And write them to buffer, converting to reals */
+ res = i2c_write_reals(nrels, buffer, lenp, results, mag);
+ if (res)
+ return res;
+ filp->f_pos += *lenp;
+ return 0;
+ }
+}
+
+/* This function is equivalent to i2c_proc_real, only it interacts with
+ the sysctl(2) syscall, and returns no reals, but integers */
+int i2c_sysctl_real(ctl_table * table, int *name, int nlen,
+ void *oldval, size_t * oldlenp, void *newval,
+ size_t newlen, void **context)
+{
+ long results[MAX_RESULTS];
+ int oldlen, nrels = MAX_RESULTS,ret=0;
+ i2c_real_callback callback = table->extra1;
+ struct i2c_client *client = table->extra2;
+
+ /* Check if we need to output the old values */
+ if (oldval && oldlenp && !((ret=get_user(oldlen, oldlenp))) && oldlen) {
+ callback(client, SENSORS_PROC_REAL_READ, table->ctl_name,
+ &nrels, results);
+
+ /* Note the rounding factor! */
+ if (nrels * sizeof(long) < oldlen)
+ oldlen = nrels * sizeof(long);
+ oldlen = (oldlen / sizeof(long)) * sizeof(long);
+ if(copy_to_user(oldval, results, oldlen))
+ return -EFAULT;
+ if(put_user(oldlen, oldlenp))
+ return -EFAULT;
+ }
+
+ if (newval && newlen) {
+ /* Note the rounding factor! */
+ newlen -= newlen % sizeof(long);
+ nrels = newlen / sizeof(long);
+ if(copy_from_user(results, newval, newlen))
+ return -EFAULT;
+
+ /* Get the new values back to the client */
+ callback(client, SENSORS_PROC_REAL_WRITE, table->ctl_name,
+ &nrels, results);
+ }
+ return ret;
+}
+
+
+/* nrels contains initially the maximum number of elements which can be
+ put in results, and finally the number of elements actually put there.
+ A magnitude of 1 will multiply everything with 10; etc.
+ buffer, bufsize is the character buffer we read from and its length.
+ results will finally contain the parsed integers.
+
+ Buffer should contain several reals, separated by whitespace. A real
+ has the following syntax:
+ [ Minus ] Digit* [ Dot Digit* ]
+ (everything between [] is optional; * means zero or more).
+ When the next character is unparsable, everything is skipped until the
+ next whitespace.
+
+ WARNING! This is tricky code. I have tested it, but there may still be
+ hidden bugs in it, even leading to crashes and things!
+*/
+int i2c_parse_reals(int *nrels, void *buffer, int bufsize,
+ long *results, int magnitude)
+{
+ int maxels, min, mag;
+ long res,ret=0;
+ char nextchar = 0;
+
+ maxels = *nrels;
+ *nrels = 0;
+
+ while (bufsize && (*nrels < maxels)) {
+
+ /* Skip spaces at the start */
+ while (bufsize &&
+ !((ret=get_user(nextchar, (char *) buffer))) &&
+ isspace((int) nextchar)) {
+ bufsize--;
+ ((char *) buffer)++;
+ }
+
+ if (ret)
+ return -EFAULT;
+ /* Well, we may be done now */
+ if (!bufsize)
+ return 0;
+
+ /* New defaults for our result */
+ min = 0;
+ res = 0;
+ mag = magnitude;
+
+ /* Check for a minus */
+ if (!((ret=get_user(nextchar, (char *) buffer)))
+ && (nextchar == '-')) {
+ min = 1;
+ bufsize--;
+ ((char *) buffer)++;
+ }
+ if (ret)
+ return -EFAULT;
+
+ /* Digits before a decimal dot */
+ while (bufsize &&
+ !((ret=get_user(nextchar, (char *) buffer))) &&
+ isdigit((int) nextchar)) {
+ res = res * 10 + nextchar - '0';
+ bufsize--;
+ ((char *) buffer)++;
+ }
+ if (ret)
+ return -EFAULT;
+
+ /* If mag < 0, we must actually divide here! */
+ while (mag < 0) {
+ res = res / 10;
+ mag++;
+ }
+
+ if (bufsize && (nextchar == '.')) {
+ /* Skip the dot */
+ bufsize--;
+ ((char *) buffer)++;
+
+ /* Read digits while they are significant */
+ while (bufsize && (mag > 0) &&
+ !((ret=get_user(nextchar, (char *) buffer))) &&
+ isdigit((int) nextchar)) {
+ res = res * 10 + nextchar - '0';
+ mag--;
+ bufsize--;
+ ((char *) buffer)++;
+ }
+ if (ret)
+ return -EFAULT;
+ }
+ /* If we are out of data, but mag > 0, we need to scale here */
+ while (mag > 0) {
+ res = res * 10;
+ mag--;
+ }
+
+ /* Skip everything until we hit whitespace */
+ while (bufsize &&
+ !((ret=get_user(nextchar, (char *) buffer))) &&
+ isspace((int) nextchar)) {
+ bufsize--;
+ ((char *) buffer)++;
+ }
+ if (ret)
+ return -EFAULT;
+
+ /* Put res in results */
+ results[*nrels] = (min ? -1 : 1) * res;
+ (*nrels)++;
+ }
+
+ /* Well, there may be more in the buffer, but we need no more data.
+ Ignore anything that is left. */
+ return 0;
+}
+
+int i2c_write_reals(int nrels, void *buffer, int *bufsize,
+ long *results, int magnitude)
+{
+#define BUFLEN 20
+ char BUF[BUFLEN + 1]; /* An individual representation should fit! */
+ char printfstr[10];
+ int nr = 0;
+ int buflen, mag, times;
+ int curbufsize = 0;
+
+ while ((nr < nrels) && (curbufsize < *bufsize)) {
+ mag = magnitude;
+
+ if (nr != 0) {
+ if(put_user(' ', (char *) buffer))
+ return -EFAULT;
+ curbufsize++;
+ ((char *) buffer)++;
+ }
+
+ /* Fill BUF with the representation of the next string */
+ if (mag <= 0) {
+ buflen = sprintf(BUF, "%ld", results[nr]);
+ if (buflen < 0) { /* Oops, a sprintf error! */
+ *bufsize = 0;
+ return -EINVAL;
+ }
+ while ((mag < 0) && (buflen < BUFLEN)) {
+ BUF[buflen++] = '0';
+ mag++;
+ }
+ BUF[buflen] = 0;
+ } else {
+ times = 1;
+ for (times = 1; mag-- > 0; times *= 10);
+ if (results[nr] < 0) {
+ BUF[0] = '-';
+ buflen = 1;
+ } else
+ buflen = 0;
+ strcpy(printfstr, "%ld.%0Xld");
+ printfstr[6] = magnitude + '0';
+ buflen +=
+ sprintf(BUF + buflen, printfstr,
+ abs(results[nr]) / times,
+ abs(results[nr]) % times);
+ if (buflen < 0) { /* Oops, a sprintf error! */
+ *bufsize = 0;
+ return -EINVAL;
+ }
+ }
+
+ /* Now copy it to the user-space buffer */
+ if (buflen + curbufsize > *bufsize)
+ buflen = *bufsize - curbufsize;
+ if(copy_to_user(buffer, BUF, buflen))
+ return -EFAULT;
+ curbufsize += buflen;
+ (char *) buffer += buflen;
+
+ nr++;
+ }
+ if (curbufsize < *bufsize) {
+ if(put_user('\n', (char *) buffer))
+ return -EFAULT;
+ curbufsize++;
+ }
+ *bufsize = curbufsize;
+ return 0;
+}
+
+
+/* Very inefficient for ISA detects, and won't work for 10-bit addresses! */
+int i2c_detect(struct i2c_adapter *adapter,
+ struct i2c_address_data *address_data,
+ i2c_found_addr_proc * found_proc)
+{
+ int addr, i, found, j, err;
+ struct i2c_force_data *this_force;
+ int is_isa = i2c_is_isa_adapter(adapter);
+ int adapter_id =
+ is_isa ? SENSORS_ISA_BUS : i2c_adapter_id(adapter);
+
+ /* Forget it if we can't probe using SMBUS_QUICK */
+ if ((!is_isa)
+ && !i2c_check_functionality(adapter,
+ I2C_FUNC_SMBUS_QUICK)) return -1;
+
+ for (addr = 0x00; addr <= (is_isa ? 0xffff : 0x7f); addr++) {
+ if ((is_isa && check_region(addr, 1)) ||
+ (!is_isa && i2c_check_addr(adapter, addr)))
+ continue;
+
+ /* If it is in one of the force entries, we don't do any
+ detection at all */
+ found = 0;
+ for (i = 0;
+ !found
+ && (this_force =
+ address_data->forces + i, this_force->force); i++) {
+ for (j = 0;
+ !found
+ && (this_force->force[j] != SENSORS_I2C_END);
+ j += 2) {
+ if (
+ ((adapter_id == this_force->force[j])
+ ||
+ ((this_force->
+ force[j] == SENSORS_ANY_I2C_BUS)
+ && !is_isa))
+ && (addr == this_force->force[j + 1])) {
+#ifdef DEBUG
+ printk
+ ("i2c-proc.o: found force parameter for adapter %d, addr %04x\n",
+ adapter_id, addr);
+#endif
+ if (
+ (err =
+ found_proc(adapter, addr, 0,
+ this_force->
+ kind))) return err;
+ found = 1;
+ }
+ }
+ }
+ if (found)
+ continue;
+
+ /* If this address is in one of the ignores, we can forget about it
+ right now */
+ for (i = 0;
+ !found
+ && (address_data->ignore[i] != SENSORS_I2C_END);
+ i += 2) {
+ if (
+ ((adapter_id == address_data->ignore[i])
+ ||
+ ((address_data->
+ ignore[i] == SENSORS_ANY_I2C_BUS)
+ && !is_isa))
+ && (addr == address_data->ignore[i + 1])) {
+#ifdef DEBUG
+ printk
+ ("i2c-proc.o: found ignore parameter for adapter %d, "
+ "addr %04x\n", adapter_id, addr);
+#endif
+ found = 1;
+ }
+ }
+ for (i = 0;
+ !found
+ && (address_data->ignore_range[i] != SENSORS_I2C_END);
+ i += 3) {
+ if (
+ ((adapter_id == address_data->ignore_range[i])
+ ||
+ ((address_data->
+ ignore_range[i] ==
+ SENSORS_ANY_I2C_BUS) & !is_isa))
+ && (addr >= address_data->ignore_range[i + 1])
+ && (addr <= address_data->ignore_range[i + 2])) {
+#ifdef DEBUG
+ printk
+ ("i2c-proc.o: found ignore_range parameter for adapter %d, "
+ "addr %04x\n", adapter_id, addr);
+#endif
+ found = 1;
+ }
+ }
+ if (found)
+ continue;
+
+ /* Now, we will do a detection, but only if it is in the normal or
+ probe entries */
+ if (is_isa) {
+ for (i = 0;
+ !found
+ && (address_data->normal_isa[i] !=
+ SENSORS_ISA_END); i += 1) {
+ if (addr == address_data->normal_isa[i]) {
+#ifdef DEBUG
+ printk
+ ("i2c-proc.o: found normal isa entry for adapter %d, "
+ "addr %04x\n", adapter_id,
+ addr);
+#endif
+ found = 1;
+ }
+ }
+ for (i = 0;
+ !found
+ && (address_data->normal_isa_range[i] !=
+ SENSORS_ISA_END); i += 3) {
+ if ((addr >=
+ address_data->normal_isa_range[i])
+ && (addr <=
+ address_data->normal_isa_range[i + 1])
+ &&
+ ((addr -
+ address_data->normal_isa_range[i]) %
+ address_data->normal_isa_range[i + 2] ==
+ 0)) {
+#ifdef DEBUG
+ printk
+ ("i2c-proc.o: found normal isa_range entry for adapter %d, "
+ "addr %04x", adapter_id, addr);
+#endif
+ found = 1;
+ }
+ }
+ } else {
+ for (i = 0;
+ !found && (address_data->normal_i2c[i] !=
+ SENSORS_I2C_END); i += 1) {
+ if (addr == address_data->normal_i2c[i]) {
+ found = 1;
+#ifdef DEBUG
+ printk
+ ("i2c-proc.o: found normal i2c entry for adapter %d, "
+ "addr %02x", adapter_id, addr);
+#endif
+ }
+ }
+ for (i = 0;
+ !found
+ && (address_data->normal_i2c_range[i] !=
+ SENSORS_I2C_END); i += 2) {
+ if ((addr >=
+ address_data->normal_i2c_range[i])
+ && (addr <=
+ address_data->normal_i2c_range[i + 1]))
+ {
+#ifdef DEBUG
+ printk
+ ("i2c-proc.o: found normal i2c_range entry for adapter %d, "
+ "addr %04x\n", adapter_id, addr);
+#endif
+ found = 1;
+ }
+ }
+ }
+
+ for (i = 0;
+ !found && (address_data->probe[i] != SENSORS_I2C_END);
+ i += 2) {
+ if (((adapter_id == address_data->probe[i]) ||
+ ((address_data->
+ probe[i] == SENSORS_ANY_I2C_BUS) & !is_isa))
+ && (addr == address_data->probe[i + 1])) {
+#ifdef DEBUG
+ printk
+ ("i2c-proc.o: found probe parameter for adapter %d, "
+ "addr %04x\n", adapter_id, addr);
+#endif
+ found = 1;
+ }
+ }
+ for (i = 0; !found &&
+ (address_data->probe_range[i] != SENSORS_I2C_END);
+ i += 3) {
+ if (
+ ((adapter_id == address_data->probe_range[i])
+ ||
+ ((address_data->probe_range[i] ==
+ SENSORS_ANY_I2C_BUS) & !is_isa))
+ && (addr >= address_data->probe_range[i + 1])
+ && (addr <= address_data->probe_range[i + 2])) {
+ found = 1;
+#ifdef DEBUG
+ printk
+ ("i2c-proc.o: found probe_range parameter for adapter %d, "
+ "addr %04x\n", adapter_id, addr);
+#endif
+ }
+ }
+ if (!found)
+ continue;
+
+ /* OK, so we really should examine this address. First check
+ whether there is some client here at all! */
+ if (is_isa ||
+ (i2c_smbus_xfer
+ (adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL) >= 0))
+ if ((err = found_proc(adapter, addr, 0, -1)))
+ return err;
+ }
+ return 0;
+}
+
+int __init sensors_init(void)
+{
+ printk("i2c-proc.o version %s (%s)\n", LM_VERSION, LM_DATE);
+ i2c_initialized = 0;
+ if (!
+ (i2c_proc_header =
+ register_sysctl_table(i2c_proc, 0))) return -ENOMEM;
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,1))
+ i2c_proc_header->ctl_table->child->de->owner = THIS_MODULE;
+#else
+ i2c_proc_header->ctl_table->child->de->fill_inode =
+ &i2c_fill_inode;
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,1)) */
+ i2c_initialized++;
+ return 0;
+}
+
+EXPORT_SYMBOL(i2c_deregister_entry);
+EXPORT_SYMBOL(i2c_detect);
+EXPORT_SYMBOL(i2c_proc_real);
+EXPORT_SYMBOL(i2c_register_entry);
+EXPORT_SYMBOL(i2c_sysctl_real);
+
+#ifdef MODULE
+
+MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>");
+MODULE_DESCRIPTION("i2c-proc driver");
+
+int i2c_cleanup(void)
+{
+ if (i2c_initialized >= 1) {
+ unregister_sysctl_table(i2c_proc_header);
+ i2c_initialized--;
+ }
+ return 0;
+}
+
+int init_module(void)
+{
+ return sensors_init();
+}
+
+int cleanup_module(void)
+{
+ return i2c_cleanup();
+}
+
+#endif /* MODULE */
--- linux-old/include/linux/i2c-proc.h Mon Jul 23 01:39:58 CEST 2001
+++ linux/include/linux/i2c-proc.h Mon Jul 23 01:39:58 CEST 2001
@@ -0,0 +1,396 @@
+/*
+ sensors.h - Part of lm_sensors, Linux kernel modules for hardware
+ monitoring
+ Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
+
+ 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.
+*/
+
+#ifndef SENSORS_SENSORS_H
+#define SENSORS_SENSORS_H
+
+#ifdef __KERNEL__
+
+/* Next two must be included before sysctl.h can be included, in 2.0 kernels */
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/sysctl.h>
+
+/* The type of callback functions used in sensors_{proc,sysctl}_real */
+typedef void (*i2c_real_callback) (struct i2c_client * client,
+ int operation, int ctl_name,
+ int *nrels_mag, long *results);
+
+/* Values for the operation field in the above function type */
+#define SENSORS_PROC_REAL_INFO 1
+#define SENSORS_PROC_REAL_READ 2
+#define SENSORS_PROC_REAL_WRITE 3
+
+/* These funcion reads or writes a 'real' value (encoded by the combination
+ of an integer and a magnitude, the last is the power of ten the value
+ should be divided with) to a /proc/sys directory. To use these functions,
+ you must (before registering the ctl_table) set the extra2 field to the
+ client, and the extra1 field to a function of the form:
+ void func(struct i2c_client *client, int operation, int ctl_name,
+ int *nrels_mag, long *results)
+ This last function can be called for three values of operation. If
+ operation equals SENSORS_PROC_REAL_INFO, the magnitude should be returned
+ in nrels_mag. If operation equals SENSORS_PROC_REAL_READ, values should
+ be read into results. nrels_mag should return the number of elements
+ read; the maximum number is put in it on entry. Finally, if operation
+ equals SENSORS_PROC_REAL_WRITE, the values in results should be
+ written to the chip. nrels_mag contains on entry the number of elements
+ found.
+ In all cases, client points to the client we wish to interact with,
+ and ctl_name is the SYSCTL id of the file we are accessing. */
+extern int i2c_sysctl_real(ctl_table * table, int *name, int nlen,
+ void *oldval, size_t * oldlenp,
+ void *newval, size_t newlen,
+ void **context);
+extern int i2c_proc_real(ctl_table * ctl, int write, struct file *filp,
+ void *buffer, size_t * lenp);
+
+
+
+/* These rather complex functions must be called when you want to add or
+ delete an entry in /proc/sys/dev/sensors/chips (not yet implemented). It
+ also creates a new directory within /proc/sys/dev/sensors/.
+ ctl_template should be a template of the newly created directory. It is
+ copied in memory. The extra2 field of each file is set to point to client.
+ If any driver wants subdirectories within the newly created directory,
+ these functions must be updated! */
+extern int i2c_register_entry(struct i2c_client *client,
+ const char *prefix,
+ ctl_table * ctl_template,
+ struct module *controlling_mod);
+
+extern void i2c_deregister_entry(int id);
+
+
+/* A structure containing detect information.
+ Force variables overrule all other variables; they force a detection on
+ that place. If a specific chip is given, the module blindly assumes this
+ chip type is present; if a general force (kind == 0) is given, the module
+ will still try to figure out what type of chip is present. This is useful
+ if for some reasons the detect for SMBus or ISA address space filled
+ fails.
+ probe: insmod parameter. Initialize this list with SENSORS_I2C_END values.
+ A list of pairs. The first value is a bus number (SENSORS_ISA_BUS for
+ the ISA bus, -1 for any I2C bus), the second is the address.
+ kind: The kind of chip. 0 equals any chip.
+*/
+struct i2c_force_data {
+ unsigned short *force;
+ unsigned short kind;
+};
+
+/* A structure containing the detect information.
+ normal_i2c: filled in by the module writer. Terminated by SENSORS_I2C_END.
+ A list of I2C addresses which should normally be examined.
+ normal_i2c_range: filled in by the module writer. Terminated by
+ SENSORS_I2C_END
+ A list of pairs of I2C addresses, each pair being an inclusive range of
+ addresses which should normally be examined.
+ normal_isa: filled in by the module writer. Terminated by SENSORS_ISA_END.
+ A list of ISA addresses which should normally be examined.
+ normal_isa_range: filled in by the module writer. Terminated by
+ SENSORS_ISA_END
+ A list of triples. The first two elements are ISA addresses, being an
+ range of addresses which should normally be examined. The third is the
+ modulo parameter: only addresses which are 0 module this value relative
+ to the first address of the range are actually considered.
+ probe: insmod parameter. Initialize this list with SENSORS_I2C_END values.
+ A list of pairs. The first value is a bus number (SENSORS_ISA_BUS for
+ the ISA bus, -1 for any I2C bus), the second is the address. These
+ addresses are also probed, as if they were in the 'normal' list.
+ probe_range: insmod parameter. Initialize this list with SENSORS_I2C_END
+ values.
+ A list of triples. The first value is a bus number (SENSORS_ISA_BUS for
+ the ISA bus, -1 for any I2C bus), the second and third are addresses.
+ These form an inclusive range of addresses that are also probed, as
+ if they were in the 'normal' list.
+ ignore: insmod parameter. Initialize this list with SENSORS_I2C_END values.
+ A list of pairs. The first value is a bus number (SENSORS_ISA_BUS for
+ the ISA bus, -1 for any I2C bus), the second is the I2C address. These
+ addresses are never probed. This parameter overrules 'normal' and
+ 'probe', but not the 'force' lists.
+ ignore_range: insmod parameter. Initialize this list with SENSORS_I2C_END
+ values.
+ A list of triples. The first value is a bus number (SENSORS_ISA_BUS for
+ the ISA bus, -1 for any I2C bus), the second and third are addresses.
+ These form an inclusive range of I2C addresses that are never probed.
+ This parameter overrules 'normal' and 'probe', but not the 'force' lists.
+ force_data: insmod parameters. A list, ending with an element of which
+ the force field is NULL.
+*/
+struct i2c_address_data {
+ unsigned short *normal_i2c;
+ unsigned short *normal_i2c_range;
+ unsigned int *normal_isa;
+ unsigned int *normal_isa_range;
+ unsigned short *probe;
+ unsigned short *probe_range;
+ unsigned short *ignore;
+ unsigned short *ignore_range;
+ struct i2c_force_data *forces;
+};
+
+/* Internal numbers to terminate lists */
+#define SENSORS_I2C_END 0xfffe
+#define SENSORS_ISA_END 0xfffefffe
+
+/* The numbers to use to set an ISA or I2C bus address */
+#define SENSORS_ISA_BUS 9191
+#define SENSORS_ANY_I2C_BUS 0xffff
+
+/* The length of the option lists */
+#define SENSORS_MAX_OPTS 48
+
+/* Default fill of many variables */
+#define SENSORS_DEFAULTS {SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END, \
+ SENSORS_I2C_END, SENSORS_I2C_END, SENSORS_I2C_END}
+
+/* This is ugly. We need to evaluate SENSORS_MAX_OPTS before it is
+ stringified */
+#define SENSORS_MODPARM_AUX1(x) "1-" #x "h"
+#define SENSORS_MODPARM_AUX(x) SENSORS_MODPARM_AUX1(x)
+#define SENSORS_MODPARM SENSORS_MODPARM_AUX(SENSORS_MAX_OPTS)
+
+/* SENSORS_MODULE_PARM creates a module parameter, and puts it in the
+ module header */
+#define SENSORS_MODULE_PARM(var,desc) \
+ static unsigned short var[SENSORS_MAX_OPTS] = SENSORS_DEFAULTS; \
+ MODULE_PARM(var,SENSORS_MODPARM); \
+ MODULE_PARM_DESC(var,desc)
+
+/* SENSORS_MODULE_PARM creates a 'force_*' module parameter, and puts it in
+ the module header */
+#define SENSORS_MODULE_PARM_FORCE(name) \
+ SENSORS_MODULE_PARM(force_ ## name, \
+ "List of adapter,address pairs which are unquestionably" \
+ " assumed to contain a `" # name "' chip")
+
+
+/* This defines several insmod variables, and the addr_data structure */
+#define SENSORS_INSMOD \
+ SENSORS_MODULE_PARM(probe, \
+ "List of adapter,address pairs to scan additionally"); \
+ SENSORS_MODULE_PARM(probe_range, \
+ "List of adapter,start-addr,end-addr triples to scan " \
+ "additionally"); \
+ SENSORS_MODULE_PARM(ignore, \
+ "List of adapter,address pairs not to scan"); \
+ SENSORS_MODULE_PARM(ignore_range, \
+ "List of adapter,start-addr,end-addr triples not to " \
+ "scan"); \
+ static struct i2c_address_data addr_data = \
+ {normal_i2c, normal_i2c_range, \
+ normal_isa, normal_isa_range, \
+ probe, probe_range, \
+ ignore, ignore_range, \
+ forces}
+
+/* The following functions create an enum with the chip names as elements.
+ The first element of the enum is any_chip. These are the only macros
+ a module will want to use. */
+
+#define SENSORS_INSMOD_0 \
+ enum chips { any_chip }; \
+ SENSORS_MODULE_PARM(force, \
+ "List of adapter,address pairs to boldly assume " \
+ "to be present"); \
+ static struct i2c_force_data forces[] = {{force,any_chip},{NULL}}; \
+ SENSORS_INSMOD
+
+#define SENSORS_INSMOD_1(chip1) \
+ enum chips { any_chip, chip1 }; \
+ SENSORS_MODULE_PARM(force, \
+ "List of adapter,address pairs to boldly assume " \
+ "to be present"); \
+ SENSORS_MODULE_PARM_FORCE(chip1); \
+ static struct i2c_force_data forces[] = {{force,any_chip},\
+ {force_ ## chip1,chip1}, \
+ {NULL}}; \
+ SENSORS_INSMOD
+
+#define SENSORS_INSMOD_2(chip1,chip2) \
+ enum chips { any_chip, chip1, chip2 }; \
+ SENSORS_MODULE_PARM(force, \
+ "List of adapter,address pairs to boldly assume " \
+ "to be present"); \
+ SENSORS_MODULE_PARM_FORCE(chip1); \
+ SENSORS_MODULE_PARM_FORCE(chip2); \
+ static struct i2c_force_data forces[] = {{force,any_chip}, \
+ {force_ ## chip1,chip1}, \
+ {force_ ## chip2,chip2}, \
+ {NULL}}; \
+ SENSORS_INSMOD
+
+#define SENSORS_INSMOD_3(chip1,chip2,chip3) \
+ enum chips { any_chip, chip1, chip2, chip3 }; \
+ SENSORS_MODULE_PARM(force, \
+ "List of adapter,address pairs to boldly assume " \
+ "to be present"); \
+ SENSORS_MODULE_PARM_FORCE(chip1); \
+ SENSORS_MODULE_PARM_FORCE(chip2); \
+ SENSORS_MODULE_PARM_FORCE(chip3); \
+ static struct i2c_force_data forces[] = {{force,any_chip}, \
+ {force_ ## chip1,chip1}, \
+ {force_ ## chip2,chip2}, \
+ {force_ ## chip3,chip3}, \
+ {NULL}}; \
+ SENSORS_INSMOD
+
+#define SENSORS_INSMOD_4(chip1,chip2,chip3,chip4) \
+ enum chips { any_chip, chip1, chip2, chip3, chip4 }; \
+ SENSORS_MODULE_PARM(force, \
+ "List of adapter,address pairs to boldly assume " \
+ "to be present"); \
+ SENSORS_MODULE_PARM_FORCE(chip1); \
+ SENSORS_MODULE_PARM_FORCE(chip2); \
+ SENSORS_MODULE_PARM_FORCE(chip3); \
+ SENSORS_MODULE_PARM_FORCE(chip4); \
+ static struct i2c_force_data forces[] = {{force,any_chip}, \
+ {force_ ## chip1,chip1}, \
+ {force_ ## chip2,chip2}, \
+ {force_ ## chip3,chip3}, \
+ {force_ ## chip4,chip4}, \
+ {NULL}}; \
+ SENSORS_INSMOD
+
+#define SENSORS_INSMOD_5(chip1,chip2,chip3,chip4,chip5) \
+ enum chips { any_chip, chip1, chip2, chip3, chip4, chip5 }; \
+ SENSORS_MODULE_PARM(force, \
+ "List of adapter,address pairs to boldly assume " \
+ "to be present"); \
+ SENSORS_MODULE_PARM_FORCE(chip1); \
+ SENSORS_MODULE_PARM_FORCE(chip2); \
+ SENSORS_MODULE_PARM_FORCE(chip3); \
+ SENSORS_MODULE_PARM_FORCE(chip4); \
+ SENSORS_MODULE_PARM_FORCE(chip5); \
+ static struct i2c_force_data forces[] = {{force,any_chip}, \
+ {force_ ## chip1,chip1}, \
+ {force_ ## chip2,chip2}, \
+ {force_ ## chip3,chip3}, \
+ {force_ ## chip4,chip4}, \
+ {force_ ## chip5,chip5}, \
+ {NULL}}; \
+ SENSORS_INSMOD
+
+#define SENSORS_INSMOD_6(chip1,chip2,chip3,chip4,chip5,chip6) \
+ enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6 }; \
+ SENSORS_MODULE_PARM(force, \
+ "List of adapter,address pairs to boldly assume " \
+ "to be present"); \
+ SENSORS_MODULE_PARM_FORCE(chip1); \
+ SENSORS_MODULE_PARM_FORCE(chip2); \
+ SENSORS_MODULE_PARM_FORCE(chip3); \
+ SENSORS_MODULE_PARM_FORCE(chip4); \
+ SENSORS_MODULE_PARM_FORCE(chip5); \
+ SENSORS_MODULE_PARM_FORCE(chip6); \
+ static struct i2c_force_data forces[] = {{force,any_chip}, \
+ {force_ ## chip1,chip1}, \
+ {force_ ## chip2,chip2}, \
+ {force_ ## chip3,chip3}, \
+ {force_ ## chip4,chip4}, \
+ {force_ ## chip5,chip5}, \
+ {force_ ## chip6,chip6}, \
+ {NULL}}; \
+ SENSORS_INSMOD
+
+#define SENSORS_INSMOD_7(chip1,chip2,chip3,chip4,chip5,chip6,chip7) \
+ enum chips { any_chip, chip1, chip2, chip3, chip4, chip5, chip6, chip7 }; \
+ SENSORS_MODULE_PARM(force, \
+ "List of adapter,address pairs to boldly assume " \
+ "to be present"); \
+ SENSORS_MODULE_PARM_FORCE(chip1); \
+ SENSORS_MODULE_PARM_FORCE(chip2); \
+ SENSORS_MODULE_PARM_FORCE(chip3); \
+ SENSORS_MODULE_PARM_FORCE(chip4); \
+ SENSORS_MODULE_PARM_FORCE(chip5); \
+ SENSORS_MODULE_PARM_FORCE(chip6); \
+ SENSORS_MODULE_PARM_FORCE(chip7); \
+ static struct i2c_force_data forces[] = {{force,any_chip}, \
+ {force_ ## chip1,chip1}, \
+ {force_ ## chip2,chip2}, \
+ {force_ ## chip3,chip3}, \
+ {force_ ## chip4,chip4}, \
+ {force_ ## chip5,chip5}, \
+ {force_ ## chip6,chip6}, \
+ {force_ ## chip7,chip7}, \
+ {NULL}}; \
+ SENSORS_INSMOD
+
+typedef int i2c_found_addr_proc(struct i2c_adapter *adapter,
+ int addr, unsigned short flags,
+ int kind);
+
+/* Detect function. It iterates over all possible addresses itself. For
+ SMBus addresses, it will only call found_proc if some client is connected
+ to the SMBus (unless a 'force' matched); for ISA detections, this is not
+ done. */
+extern int i2c_detect(struct i2c_adapter *adapter,
+ struct i2c_address_data *address_data,
+ i2c_found_addr_proc * found_proc);
+
+
+/* This macro is used to scale user-input to sensible values in almost all
+ chip drivers. */
+extern inline int SENSORS_LIMIT(long value, long low, long high)
+{
+ if (value < low)
+ return low;
+ else if (value > high)
+ return high;
+ else
+ return value;
+}
+
+#endif /* def __KERNEL__ */
+
+
+/* The maximum length of the prefix */
+#define SENSORS_PREFIX_MAX 20
+
+/* Sysctl IDs */
+#ifdef DEV_HWMON
+#define DEV_SENSORS DEV_HWMON
+#else /* ndef DEV_HWMOM */
+#define DEV_SENSORS 2 /* The id of the lm_sensors directory within the
+ dev table */
+#endif /* def DEV_HWMON */
+
+#define SENSORS_CHIPS 1
+struct i2c_chips_data {
+ int sysctl_id;
+ char name[SENSORS_PREFIX_MAX + 13];
+};
+
+#endif /* def SENSORS_SENSORS_H */
+
--- linux-old/include/linux/i2c.h Mon Jul 23 01:40:00 CEST 2001
+++ linux/include/linux/i2c.h Mon Jul 23 01:40:00 CEST 2001
@@ -24,5 +24,5 @@
Frodo Looijaard <frodol@dds.nl> */
-/* $Id: i2c.h,v 1.42 2000/09/06 20:14:06 frodo Exp $ */
+/* $Id: i2c.h,v 1.45 2001/04/03 02:43:21 mds Exp $ */
#ifndef I2C_H
@@ -203,5 +203,5 @@
unsigned int id;
- /* If a adapter algorithm can't to I2C-level access, set master_xfer
+ /* If an adapter algorithm can't to I2C-level access, set master_xfer
to NULL. If an adapter algorithm can do SMBus access, set
smbus_xfer. If set to NULL, the SMBus protocol is simulated
@@ -345,5 +345,5 @@
extern int i2c_check_addr (struct i2c_adapter *adapter, int addr);
-/* Detect function. It itterates over all possible addresses itself.
+/* Detect function. It iterates over all possible addresses itself.
* It will only call found_proc if some client is connected at the
* specific address (unless a 'force' matched);
@@ -361,5 +361,5 @@
/* This call returns a unique low identifier for each registered adapter,
- * or -1 if the adapter was not regisitered.
+ * or -1 if the adapter was not registered.
*/
extern int i2c_adapter_id(struct i2c_adapter *adap);
@@ -455,6 +455,7 @@
*/
/* -> bit-adapter specific ioctls */
-#define I2C_RETRIES 0x0701 /* number times a device address should */
- /* be polled when not acknowledging */
+#define I2C_RETRIES 0x0701 /* number of times a device address */
+ /* should be polled when not */
+ /* acknowledging */
#define I2C_TIMEOUT 0x0702 /* set timeout - call with int */
@@ -549,4 +550,11 @@
ignore, ignore_range, \
force}
+
+/* Detect whether we are on the isa bus. If this returns true, all i2c
+ access will fail! */
+#define i2c_is_isa_client(clientptr) \
+ ((clientptr)->adapter->algo->id == I2C_ALGO_ISA)
+#define i2c_is_isa_adapter(adapptr) \
+ ((adapptr)->algo->id == I2C_ALGO_ISA)
#endif /* def __KERNEL__ */
--- linux-old/drivers/i2c/Config.in Mon Jul 23 01:40:00 CEST 2001
+++ linux/drivers/i2c/Config.in Mon Jul 23 01:40:00 CEST 2001
@@ -21,8 +21,24 @@
fi
+ if [ "$CONFIG_8xx" = "y" ]; then
+ dep_tristate 'MPC8xx CPM I2C interface' CONFIG_I2C_ALGO8XX $CONFIG_I2C
+ if [ "$CONFIG_RPXLITE" = "y" -o "$CONFIG_RPXCLASSIC" = "y" ]; then
+ dep_tristate ' Embedded Planet RPX Lite/Classic suppoort' CONFIG_I2C_RPXLITE $CONFIG_I2C_ALGO8XX
+ fi
+ fi
+
+ if [ "$CONFIG_405" = "y" ]; then
+ dep_tristate 'PPC 405 I2C Algorithm' CONFIG_I2C_PPC405_ALGO $CONFIG_I2C
+ if [ "CONFIG_PPC405_I2C_ALGO" != "n" ]; then
+ dep_tristate ' PPC 405 I2C Adapter' CONFIG_I2C_PPC405_ADAP $CONFIG_I2C_PPC405_ALGO
+ fi
+ fi
+
# This is needed for automatic patch generation: sensors code starts here
# This is needed for automatic patch generation: sensors code ends here
dep_tristate 'I2C device interface' CONFIG_I2C_CHARDEV $CONFIG_I2C
+
+ dep_tristate 'I2C /proc interface' CONFIG_I2C_PROC $CONFIG_I2C
fi
--- linux-old/drivers/i2c/Makefile Mon Jul 23 01:40:00 CEST 2001
+++ linux/drivers/i2c/Makefile Mon Jul 23 01:40:00 CEST 2001
@@ -5,5 +5,5 @@
O_TARGET := i2c.o
-export-objs := i2c-core.o i2c-algo-bit.o i2c-algo-pcf.o
+export-objs := i2c-core.o i2c-algo-bit.o i2c-algo-pcf.o i2c-proc.o
obj-$(CONFIG_I2C) += i2c-core.o
@@ -15,4 +15,5 @@
obj-$(CONFIG_I2C_ALGOPCF) += i2c-algo-pcf.o
obj-$(CONFIG_I2C_ELEKTOR) += i2c-elektor.o
+obj-$(CONFIG_I2C_PROC) += i2c-proc.o
# This is needed for automatic patch generation: sensors code starts here
--- linux-old/Documentation/Configure.help Mon Jul 23 01:40:01 CEST 2001
+++ linux/Documentation/Configure.help Mon Jul 23 01:40:01 CEST 2001
@@ -13559,5 +13559,5 @@
many micro controller applications and developed by Philips. SMBus,
or System Management Bus is a subset of the I2C protocol. More
- information is contained in the directory Documentation/i2c/,
+ information is contained in the directory <file:Documentation/i2c/>,
especially in the file called "summary" there.
@@ -13571,9 +13571,9 @@
specific driver for your bus adapter(s) below. If you say Y to
"/proc file system" below, you will then get a /proc interface which
- is documented in Documentation/i2c/proc-interface.
+ is documented in <file:Documentation/i2c/proc-interface>.
This I2C support is also available as a module. If you want to
compile it as a module, say M here and read
- Documentation/modules.txt. The module will be called i2c-core.o.
+ <file:Documentation/modules.txt>. The module will be called i2c-core.o.
I2C bit-banging interfaces
@@ -13584,5 +13584,5 @@
This support is also available as a module. If you want to compile
- it as a module, say M here and read Documentation/modules.txt. The
+ it as a module, say M here and read <file:Documentation/modules.txt>. The
module will be called i2c-algo-bit.o.
@@ -13593,5 +13593,5 @@
This driver is also available as a module. If you want to compile
- it as a module, say M here and read Documentation/modules.txt. The
+ it as a module, say M here and read <file:Documentation/modules.txt>. The
module will be called i2c-philips-par.o.
@@ -13605,5 +13605,5 @@
This driver is also available as a module. If you want to compile
- it as a module, say M here and read Documentation/modules.txt. The
+ it as a module, say M here and read <file:Documentation/modules.txt>. The
module will be called i2c-elv.o.
@@ -13614,5 +13614,5 @@
This driver is also available as a module. If you want to compile
- it as a module, say M here and read Documentation/modules.txt. The
+ it as a module, say M here and read <file:Documentation/modules.txt>. The
module will be called i2c-velleman.o.
@@ -13624,5 +13624,5 @@
This support is also available as a module. If you want to compile
- it as a module, say M here and read Documentation/modules.txt. The
+ it as a module, say M here and read <file:Documentation/modules.txt>. The
module will be called i2c-algo-pcf.o.
@@ -13633,5 +13633,5 @@
This driver is also available as a module. If you want to compile
- it as a module, say M here and read Documentation/modules.txt. The
+ it as a module, say M here and read <file:Documentation/modules.txt>. The
module will be called i2c-elektor.o.
@@ -13641,8 +13641,17 @@
directory on your system. They make it possible to have user-space
programs use the I2C bus. Information on how to do this is contained
- in the file Documentation/i2c/dev-interface.
+ in the file <file:Documentation/i2c/dev-interface>.
This code is also available as a module. If you want to compile
- it as a module, say M here and read Documentation/modules.txt. The
+ it as a module, say M here and read <file:Documentation/modules.txt>. The
+ module will be called i2c-dev.o.
+
+I2C /proc support
+CONFIG_I2C_PROC
+ This provides support for i2c device entries in the /proc filesystem.
+ The entries will be found in /proc/sys/dev/sensors.
+
+ This code is also available as a module. If you want to compile
+ it as a module, say M here and read <file:Documentation/modules.txt>. The
module will be called i2c-dev.o.
-- J.A. Magallon # Let the source be with you... mailto:jamagallon@able.es Mandrake Linux release 8.1 (Cooker) for i586 Linux werewolf 2.4.7 #1 SMP Mon Jul 23 01:55:36 CEST 2001 i686 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Tue Jul 31 2001 - 21:00:20 EST