diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-elektor.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-elektor.c | 71 |
1 files changed, 47 insertions, 24 deletions
diff --git a/drivers/i2c/busses/i2c-elektor.c b/drivers/i2c/busses/i2c-elektor.c index 59f8308c235..485497066ed 100644 --- a/drivers/i2c/busses/i2c-elektor.c +++ b/drivers/i2c/busses/i2c-elektor.c @@ -19,26 +19,26 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* ------------------------------------------------------------------------- */ -/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even +/* With some changes from Kyösti Mälkki <kmalkki@cc.hut.fi> and even Frodo Looijaard <frodol@dds.nl> */ -/* Partialy rewriten by Oleg I. Vdovikin for mmapped support of +/* Partially rewriten by Oleg I. Vdovikin for mmapped support of for Alpha Processor Inc. UP-2000(+) boards */ #include <linux/kernel.h> #include <linux/ioport.h> #include <linux/module.h> #include <linux/delay.h> -#include <linux/slab.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/pci.h> #include <linux/wait.h> +#include <linux/isa.h> #include <linux/i2c.h> #include <linux/i2c-algo-pcf.h> +#include <linux/io.h> -#include <asm/io.h> #include <asm/irq.h> #include "../algos/i2c-algo-pcf.h" @@ -103,7 +103,8 @@ static int pcf_isa_getclock(void *data) return (clock); } -static void pcf_isa_waitforpin(void) { +static void pcf_isa_waitforpin(void *data) +{ DEFINE_WAIT(wait); int timeout = 2; unsigned long flags; @@ -131,7 +132,7 @@ static void pcf_isa_waitforpin(void) { } -static irqreturn_t pcf_isa_handler(int this_irq, void *dev_id, struct pt_regs *regs) { +static irqreturn_t pcf_isa_handler(int this_irq, void *dev_id) { spin_lock(&lock); pcf_pending = 1; spin_unlock(&lock); @@ -195,20 +196,16 @@ static struct i2c_algo_pcf_data pcf_isa_data = { .getown = pcf_isa_getown, .getclock = pcf_isa_getclock, .waitforpin = pcf_isa_waitforpin, - .udelay = 10, - .mdelay = 10, - .timeout = 100, }; static struct i2c_adapter pcf_isa_ops = { .owner = THIS_MODULE, - .class = I2C_CLASS_HWMON, - .id = I2C_HW_P_ELEK, + .class = I2C_CLASS_HWMON | I2C_CLASS_SPD, .algo_data = &pcf_isa_data, .name = "i2c-elektor", }; -static int __init i2c_pcfisa_init(void) +static int elektor_match(struct device *dev, unsigned int id) { #ifdef __alpha__ /* check to see we have memory mapped PCF8584 connected to the @@ -223,9 +220,8 @@ static int __init i2c_pcfisa_init(void) /* yeap, we've found cypress, let's check config */ if (!pci_read_config_byte(cy693_dev, 0x47, &config)) { - pr_debug("%s: found cy82c693, config " - "register 0x47 = 0x%02x\n", - pcf_isa_ops.name, config); + dev_dbg(dev, "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 @@ -245,9 +241,9 @@ static int __init i2c_pcfisa_init(void) 8.25 MHz (PCI/4) clock (this can be read from cypress) */ clock = I2C_PCF_CLK | I2C_PCF_TRNS90; - pr_info("%s: found API UP2000 like " - "board, will probe PCF8584 " - "later\n", pcf_isa_ops.name); + dev_info(dev, "found API UP2000 like " + "board, will probe PCF8584 " + "later\n"); } } pci_dev_put(cy693_dev); @@ -257,22 +253,27 @@ static int __init i2c_pcfisa_init(void) /* sanity checks for mmapped I/O */ if (mmapped && base < 0xc8000) { - printk(KERN_ERR "%s: incorrect base address (%#x) specified " - "for mmapped I/O\n", pcf_isa_ops.name, base); - return -ENODEV; + dev_err(dev, "incorrect base address (%#x) specified " + "for mmapped I/O\n", base); + return 0; } if (base == 0) { base = DEFAULT_BASE; } + return 1; +} +static int elektor_probe(struct device *dev, unsigned int id) +{ init_waitqueue_head(&pcf_wait); if (pcf_isa_init()) return -ENODEV; + pcf_isa_ops.dev.parent = dev; if (i2c_pcf_add_bus(&pcf_isa_ops) < 0) 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; @@ -292,9 +293,9 @@ static int __init i2c_pcfisa_init(void) return -ENODEV; } -static void i2c_pcfisa_exit(void) +static int elektor_remove(struct device *dev, unsigned int id) { - i2c_pcf_del_bus(&pcf_isa_ops); + i2c_del_adapter(&pcf_isa_ops); if (irq > 0) { disable_irq(irq); @@ -308,6 +309,28 @@ static void i2c_pcfisa_exit(void) iounmap(base_iomem); release_mem_region(base, 2); } + + return 0; +} + +static struct isa_driver i2c_elektor_driver = { + .match = elektor_match, + .probe = elektor_probe, + .remove = 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>"); |