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authorJean Delvare <khali@linux-fr.org>2008-10-14 19:30:02 +0400
committerJean Delvare <khali@mahadeva.delvare>2008-10-14 19:30:02 +0400
commit9df013b3e46c67dd3745df91eaccdc719118e0cc (patch)
tree81fe2d8b900e6ef9508a11a7f354ace9c2e04d03 /drivers/i2c/chips
parenta5f08a327abc45eb6cb3cc1f5fabf38607ae2acc (diff)
downloadlinux-9df013b3e46c67dd3745df91eaccdc719118e0cc.tar.xz
i2c/isp1301_omap: Convert to a new-style i2c driver, part 2
Based on David Brownell's patch for tps65010 and previous work by Felipe Balbi, this patch finishes converting isp1301_omap to a new-style i2c driver. There's definitely room for further drivers cleanups, but these are out of the scope of this patch. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'drivers/i2c/chips')
-rw-r--r--drivers/i2c/chips/isp1301_omap.c98
1 files changed, 33 insertions, 65 deletions
diff --git a/drivers/i2c/chips/isp1301_omap.c b/drivers/i2c/chips/isp1301_omap.c
index 8444fc6fbf61..28902ebd5539 100644
--- a/drivers/i2c/chips/isp1301_omap.c
+++ b/drivers/i2c/chips/isp1301_omap.c
@@ -50,10 +50,8 @@ MODULE_LICENSE("GPL");
struct isp1301 {
struct otg_transceiver otg;
struct i2c_client *client;
- struct i2c_client c;
void (*i2c_release)(struct device *dev);
- int irq;
int irq_type;
u32 last_otg_ctrl;
@@ -139,14 +137,6 @@ static inline void notresponding(struct isp1301 *isp)
/*-------------------------------------------------------------------------*/
-/* only two addresses possible */
-#define ISP_BASE 0x2c
-static unsigned short normal_i2c[] = {
- ISP_BASE, ISP_BASE + 1,
- I2C_CLIENT_END };
-
-I2C_CLIENT_INSMOD;
-
static struct i2c_driver isp1301_driver;
/* smbus apis are used for portability */
@@ -1230,7 +1220,7 @@ static void isp1301_release(struct device *dev)
static struct isp1301 *the_transceiver;
-static int isp1301_detach_client(struct i2c_client *i2c)
+static int __exit isp1301_remove(struct i2c_client *i2c)
{
struct isp1301 *isp;
@@ -1238,7 +1228,7 @@ static int isp1301_detach_client(struct i2c_client *i2c)
isp1301_clear_bits(isp, ISP1301_INTERRUPT_FALLING, ~0);
isp1301_clear_bits(isp, ISP1301_INTERRUPT_RISING, ~0);
- free_irq(isp->irq, isp);
+ free_irq(i2c->irq, isp);
#ifdef CONFIG_USB_OTG
otg_unbind(isp);
#endif
@@ -1253,7 +1243,7 @@ static int isp1301_detach_client(struct i2c_client *i2c)
put_device(&i2c->dev);
the_transceiver = 0;
- return i2c_detach_client(i2c);
+ return 0;
}
/*-------------------------------------------------------------------------*/
@@ -1509,12 +1499,10 @@ isp1301_start_hnp(struct otg_transceiver *dev)
/*-------------------------------------------------------------------------*/
-/* no error returns, they'd just make bus scanning stop */
-static int isp1301_probe(struct i2c_adapter *bus, int address, int kind)
+static int __init isp1301_probe(struct i2c_client *i2c)
{
int status;
struct isp1301 *isp;
- struct i2c_client *i2c;
if (the_transceiver)
return 0;
@@ -1528,37 +1516,19 @@ static int isp1301_probe(struct i2c_adapter *bus, int address, int kind)
isp->timer.function = isp1301_timer;
isp->timer.data = (unsigned long) isp;
- isp->irq = -1;
- isp->c.addr = address;
- i2c_set_clientdata(&isp->c, isp);
- isp->c.adapter = bus;
- isp->c.driver = &isp1301_driver;
- strlcpy(isp->c.name, DRIVER_NAME, I2C_NAME_SIZE);
- isp->client = i2c = &isp->c;
-
- /* if this is a true probe, verify the chip ... */
- if (kind < 0) {
- status = isp1301_get_u16(isp, ISP1301_VENDOR_ID);
- if (status != I2C_VENDOR_ID_PHILIPS) {
- dev_dbg(&bus->dev, "addr %d not philips id: %d\n",
- address, status);
- goto fail1;
- }
- status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID);
- if (status != I2C_PRODUCT_ID_PHILIPS_1301) {
- dev_dbg(&bus->dev, "%d not isp1301, %d\n",
- address, status);
- goto fail1;
- }
- }
+ i2c_set_clientdata(i2c, isp);
+ isp->client = i2c;
- status = i2c_attach_client(i2c);
- if (status < 0) {
- dev_dbg(&bus->dev, "can't attach %s to device %d, err %d\n",
- DRIVER_NAME, address, status);
-fail1:
- kfree(isp);
- return 0;
+ /* verify the chip (shouldn't be necesary) */
+ status = isp1301_get_u16(isp, ISP1301_VENDOR_ID);
+ if (status != I2C_VENDOR_ID_PHILIPS) {
+ dev_dbg(&i2c->dev, "not philips id: %d\n", status);
+ goto fail;
+ }
+ status = isp1301_get_u16(isp, ISP1301_PRODUCT_ID);
+ if (status != I2C_PRODUCT_ID_PHILIPS_1301) {
+ dev_dbg(&i2c->dev, "not isp1301, %d\n", status);
+ goto fail;
}
isp->i2c_release = i2c->dev.release;
i2c->dev.release = isp1301_release;
@@ -1587,7 +1557,7 @@ fail1:
status = otg_bind(isp);
if (status < 0) {
dev_dbg(&i2c->dev, "can't bind OTG\n");
- goto fail2;
+ goto fail;
}
#endif
@@ -1600,26 +1570,21 @@ fail1:
/* IRQ wired at M14 */
omap_cfg_reg(M14_1510_GPIO2);
- isp->irq = OMAP_GPIO_IRQ(2);
if (gpio_request(2, "isp1301") == 0)
gpio_direction_input(2);
isp->irq_type = IRQF_TRIGGER_FALLING;
}
isp->irq_type |= IRQF_SAMPLE_RANDOM;
- status = request_irq(isp->irq, isp1301_irq,
+ status = request_irq(i2c->irq, isp1301_irq,
isp->irq_type, DRIVER_NAME, isp);
if (status < 0) {
dev_dbg(&i2c->dev, "can't get IRQ %d, err %d\n",
- isp->irq, status);
-#ifdef CONFIG_USB_OTG
-fail2:
-#endif
- i2c_detach_client(i2c);
- goto fail1;
+ i2c->irq, status);
+ goto fail;
}
- isp->otg.dev = &isp->client->dev;
+ isp->otg.dev = &i2c->dev;
isp->otg.label = DRIVER_NAME;
isp->otg.set_host = isp1301_set_host,
@@ -1650,22 +1615,25 @@ fail2:
status);
return 0;
-}
-static int isp1301_scan_bus(struct i2c_adapter *bus)
-{
- if (!i2c_check_functionality(bus, I2C_FUNC_SMBUS_BYTE_DATA
- | I2C_FUNC_SMBUS_READ_WORD_DATA))
- return -EINVAL;
- return i2c_probe(bus, &addr_data, isp1301_probe);
+fail:
+ kfree(isp);
+ return -ENODEV;
}
+static const struct i2c_device_id isp1301_id[] = {
+ { "isp1301_omap", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, isp1301_id);
+
static struct i2c_driver isp1301_driver = {
.driver = {
.name = "isp1301_omap",
},
- .attach_adapter = isp1301_scan_bus,
- .detach_client = isp1301_detach_client,
+ .probe = isp1301_probe,
+ .remove = __exit_p(isp1301_remove),
+ .id_table = isp1301_id,
};
/*-------------------------------------------------------------------------*/