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i2c-elektor: Port to the new device driver model 

Port the i2c-elektor driver to the new device driver model. I'm
using Rene Herman's new isa bus type, as it fits the needs nicely. One
benefit is that we can now give a proper parent to our i2c adapter.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Jean Delvare 2007-05-01 23:26:30 +02:00 committed by Jean Delvare
parent c6e8bb2ca5
commit 4a5d30302e
1 changed files with 39 additions and 12 deletions
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51
drivers/i2c/busses/i2c-elektor.c
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@ -35,6 +35,7 @@
#include <linux/pci.h> #include <linux/pci.h>
#include <linux/wait.h> #include <linux/wait.h>
#include <linux/isa.h>
#include <linux/i2c.h> #include <linux/i2c.h>
#include <linux/i2c-algo-pcf.h> #include <linux/i2c-algo-pcf.h>
@ -207,7 +208,7 @@ static struct i2c_adapter pcf_isa_ops = {
.name = "i2c-elektor", .name = "i2c-elektor",
}; };
static int __init i2c_pcfisa_init(void) static int __devinit elektor_match(struct device *dev, unsigned int id)
{ {
#ifdef __alpha__ #ifdef __alpha__
/* check to see we have memory mapped PCF8584 connected to the /* check to see we have memory mapped PCF8584 connected to the
@ -222,9 +223,8 @@ static int __init i2c_pcfisa_init(void)
/* yeap, we've found cypress, let's check config */ /* yeap, we've found cypress, let's check config */
if (!pci_read_config_byte(cy693_dev, 0x47, &config)) { if (!pci_read_config_byte(cy693_dev, 0x47, &config)) {
pr_debug("%s: found cy82c693, config " dev_dbg(dev, "found cy82c693, config "
"register 0x47 = 0x%02x\n", "register 0x47 = 0x%02x\n", config);
pcf_isa_ops.name, config);
/* UP2000 board has this register set to 0xe1, /* UP2000 board has this register set to 0xe1,
but the most significant bit as seems can be but the most significant bit as seems can be
@ -244,9 +244,9 @@ static int __init i2c_pcfisa_init(void)
8.25 MHz (PCI/4) clock 8.25 MHz (PCI/4) clock
(this can be read from cypress) */ (this can be read from cypress) */
clock = I2C_PCF_CLK | I2C_PCF_TRNS90; clock = I2C_PCF_CLK | I2C_PCF_TRNS90;
pr_info("%s: found API UP2000 like " dev_info(dev, "found API UP2000 like "
"board, will probe PCF8584 " "board, will probe PCF8584 "
"later\n", pcf_isa_ops.name); "later\n");
} }
} }
pci_dev_put(cy693_dev); pci_dev_put(cy693_dev);
@ -256,22 +256,27 @@ static int __init i2c_pcfisa_init(void)
/* sanity checks for mmapped I/O */ /* sanity checks for mmapped I/O */
if (mmapped && base < 0xc8000) { if (mmapped && base < 0xc8000) {
printk(KERN_ERR "%s: incorrect base address (%#x) specified " dev_err(dev, "incorrect base address (%#x) specified "
"for mmapped I/O\n", pcf_isa_ops.name, base); "for mmapped I/O\n", base);
return -ENODEV; return 0;
} }
if (base == 0) { if (base == 0) {
base = DEFAULT_BASE; base = DEFAULT_BASE;
} }
return 1;
}
static int __devinit elektor_probe(struct device *dev, unsigned int id)
{
init_waitqueue_head(&pcf_wait); init_waitqueue_head(&pcf_wait);
if (pcf_isa_init()) if (pcf_isa_init())
return -ENODEV; return -ENODEV;
pcf_isa_ops.dev.parent = dev;
if (i2c_pcf_add_bus(&pcf_isa_ops) < 0) if (i2c_pcf_add_bus(&pcf_isa_ops) < 0)
goto fail; goto fail;
dev_info(&pcf_isa_ops.dev, "found device at %#x\n", base); dev_info(dev, "found device at %#x\n", base);
return 0; return 0;
@ -291,7 +296,7 @@ static int __init i2c_pcfisa_init(void)
return -ENODEV; return -ENODEV;
} }
static void i2c_pcfisa_exit(void) static int __devexit elektor_remove(struct device *dev, unsigned int id)
{ {
i2c_del_adapter(&pcf_isa_ops); i2c_del_adapter(&pcf_isa_ops);
@ -307,6 +312,28 @@ static void i2c_pcfisa_exit(void)
iounmap(base_iomem); iounmap(base_iomem);
release_mem_region(base, 2); release_mem_region(base, 2);
} }
return 0;
}
static struct isa_driver i2c_elektor_driver = {
.match = elektor_match,
.probe = elektor_probe,
.remove = __devexit_p(elektor_remove),
.driver = {
.owner = THIS_MODULE,
.name = "i2c-elektor",
},
};
static int __init i2c_pcfisa_init(void)
{
return isa_register_driver(&i2c_elektor_driver, 1);
}
static void __exit i2c_pcfisa_exit(void)
{
isa_unregister_driver(&i2c_elektor_driver);
} }
MODULE_AUTHOR("Hans Berglund <hb@spacetec.no>"); MODULE_AUTHOR("Hans Berglund <hb@spacetec.no>");