diff --git a/Documentation/i2c/instantiating-devices b/Documentation/i2c/instantiating-devices index e89490270abad1ece6f8003b16ac815490f8de17..87da405a85979d9cf925fc711590f5d0deef9b7c 100644 --- a/Documentation/i2c/instantiating-devices +++ b/Documentation/i2c/instantiating-devices @@ -102,7 +102,7 @@ static int __devinit usb_hcd_pnx4008_probe(struct platform_device *pdev) memset(&i2c_info, 0, sizeof(struct i2c_board_info)); strlcpy(i2c_info.name, "isp1301_pnx", I2C_NAME_SIZE); isp1301_i2c_client = i2c_new_probed_device(i2c_adap, &i2c_info, - normal_i2c); + normal_i2c, NULL); i2c_put_adapter(i2c_adap); (...) } diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index df937df845ebf3b50b3941c9aea569ef3bb7f22b..cf14ca063181b0abdb55fe8d33dd863edc8d4d48 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1464,14 +1464,18 @@ static int i2c_detect(struct i2c_adapter *adapter, struct i2c_driver *driver) struct i2c_client * i2c_new_probed_device(struct i2c_adapter *adap, struct i2c_board_info *info, - unsigned short const *addr_list) + unsigned short const *addr_list, + int (*probe)(struct i2c_adapter *, unsigned short addr)) { int i; - /* Stop here if the bus doesn't support probing */ - if (!i2c_check_functionality(adap, I2C_FUNC_SMBUS_READ_BYTE)) { - dev_err(&adap->dev, "Probing not supported\n"); - return NULL; + if (!probe) { + /* Stop here if the bus doesn't support probing */ + if (!i2c_check_functionality(adap, I2C_FUNC_SMBUS_READ_BYTE)) { + dev_err(&adap->dev, "Probing not supported\n"); + return NULL; + } + probe = i2c_default_probe; } for (i = 0; addr_list[i] != I2C_CLIENT_END; i++) { @@ -1490,7 +1494,7 @@ i2c_new_probed_device(struct i2c_adapter *adap, } /* Test address responsiveness */ - if (i2c_default_probe(adap, addr_list[i])) + if (probe(adap, addr_list[i])) break; } diff --git a/drivers/macintosh/therm_windtunnel.c b/drivers/macintosh/therm_windtunnel.c index 5c9367acf0cf2c6a3411fe691f12540caab7ffd7..7d1bfeb6a82c42d6393d3bd20643b8609b3914d6 100644 --- a/drivers/macintosh/therm_windtunnel.c +++ b/drivers/macintosh/therm_windtunnel.c @@ -322,10 +322,10 @@ do_attach( struct i2c_adapter *adapter ) memset(&info, 0, sizeof(struct i2c_board_info)); strlcpy(info.type, "therm_ds1775", I2C_NAME_SIZE); - i2c_new_probed_device(adapter, &info, scan_ds1775); + i2c_new_probed_device(adapter, &info, scan_ds1775, NULL); strlcpy(info.type, "therm_adm1030", I2C_NAME_SIZE); - i2c_new_probed_device(adapter, &info, scan_adm1030); + i2c_new_probed_device(adapter, &info, scan_adm1030, NULL); if( x.thermostat && x.fan ) { x.running = 1; diff --git a/drivers/media/video/bt8xx/bttv-i2c.c b/drivers/media/video/bt8xx/bttv-i2c.c index 407fa61e4cdab12269358063b562157b1c6c0a31..685d6597ee796ce5f59b12ed7a25e95933499330 100644 --- a/drivers/media/video/bt8xx/bttv-i2c.c +++ b/drivers/media/video/bt8xx/bttv-i2c.c @@ -411,7 +411,7 @@ void __devinit init_bttv_i2c_ir(struct bttv *btv) memset(&info, 0, sizeof(struct i2c_board_info)); strlcpy(info.type, "ir_video", I2C_NAME_SIZE); - i2c_new_probed_device(&btv->c.i2c_adap, &info, addr_list); + i2c_new_probed_device(&btv->c.i2c_adap, &info, addr_list, NULL); } } diff --git a/drivers/media/video/cx18/cx18-i2c.c b/drivers/media/video/cx18/cx18-i2c.c index 809f7d37129c9b475d9cc15c46e7b1fb12e24750..73ce90c2f57757f6b0da6ee166cf21783d014cd2 100644 --- a/drivers/media/video/cx18/cx18-i2c.c +++ b/drivers/media/video/cx18/cx18-i2c.c @@ -117,7 +117,8 @@ static int cx18_i2c_new_ir(struct cx18 *cx, struct i2c_adapter *adap, u32 hw, break; } - return i2c_new_probed_device(adap, &info, addr_list) == NULL ? -1 : 0; + return i2c_new_probed_device(adap, &info, addr_list, NULL) == NULL ? + -1 : 0; } int cx18_i2c_register(struct cx18 *cx, unsigned idx) diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c index ffbe544e30f4cc868b213ab2e614eca48b933280..e7efb4bffabdeaeea65d270ec1d63bef84695e9f 100644 --- a/drivers/media/video/em28xx/em28xx-cards.c +++ b/drivers/media/video/em28xx/em28xx-cards.c @@ -2385,7 +2385,7 @@ void em28xx_register_i2c_ir(struct em28xx *dev) if (dev->init_data.name) info.platform_data = &dev->init_data; - i2c_new_probed_device(&dev->i2c_adap, &info, addr_list); + i2c_new_probed_device(&dev->i2c_adap, &info, addr_list, NULL); } void em28xx_card_setup(struct em28xx *dev) diff --git a/drivers/media/video/ivtv/ivtv-i2c.c b/drivers/media/video/ivtv/ivtv-i2c.c index d391bbdb0b8a600f729c5efcd36aa4d8196ebeae..a74fa099c56536c0939df5cb4a41e0595ce01b00 100644 --- a/drivers/media/video/ivtv/ivtv-i2c.c +++ b/drivers/media/video/ivtv/ivtv-i2c.c @@ -183,8 +183,8 @@ static int ivtv_i2c_new_ir(struct ivtv *itv, u32 hw, const char *type, u8 addr) return -1; memset(&info, 0, sizeof(struct i2c_board_info)); strlcpy(info.type, type, I2C_NAME_SIZE); - return i2c_new_probed_device(adap, &info, addr_list) == NULL - ? -1 : 0; + return i2c_new_probed_device(adap, &info, addr_list, NULL) + == NULL ? -1 : 0; } /* Only allow one IR receiver to be registered per board */ @@ -221,7 +221,8 @@ static int ivtv_i2c_new_ir(struct ivtv *itv, u32 hw, const char *type, u8 addr) info.platform_data = init_data; strlcpy(info.type, type, I2C_NAME_SIZE); - return i2c_new_probed_device(adap, &info, addr_list) == NULL ? -1 : 0; + return i2c_new_probed_device(adap, &info, addr_list, NULL) == NULL ? + -1 : 0; } /* Instantiate the IR receiver device using probing -- undesirable */ @@ -249,7 +250,7 @@ struct i2c_client *ivtv_i2c_new_ir_legacy(struct ivtv *itv) memset(&info, 0, sizeof(struct i2c_board_info)); strlcpy(info.type, "ir_video", I2C_NAME_SIZE); - return i2c_new_probed_device(&itv->i2c_adap, &info, addr_list); + return i2c_new_probed_device(&itv->i2c_adap, &info, addr_list, NULL); } int ivtv_i2c_register(struct ivtv *itv, unsigned idx) diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c index 3ce7c64e57897aec0fbe81f911d742604d95872d..8ee1179be926ed16d8199e7573ad65c8adb49c23 100644 --- a/drivers/media/video/v4l2-common.c +++ b/drivers/media/video/v4l2-common.c @@ -381,7 +381,8 @@ struct v4l2_subdev *v4l2_i2c_new_subdev_board(struct v4l2_device *v4l2_dev, /* Create the i2c client */ if (info->addr == 0 && probe_addrs) - client = i2c_new_probed_device(adapter, info, probe_addrs); + client = i2c_new_probed_device(adapter, info, probe_addrs, + NULL); else client = i2c_new_device(adapter, info); diff --git a/drivers/usb/host/ohci-pnx4008.c b/drivers/usb/host/ohci-pnx4008.c index cd74bbdd007cef3e218dc649361e2e516c47f454..653d6a60edb54e9e748b9e11e18a22192c8e3900 100644 --- a/drivers/usb/host/ohci-pnx4008.c +++ b/drivers/usb/host/ohci-pnx4008.c @@ -329,7 +329,7 @@ static int __devinit usb_hcd_pnx4008_probe(struct platform_device *pdev) memset(&i2c_info, 0, sizeof(struct i2c_board_info)); strlcpy(i2c_info.type, "isp1301_pnx", I2C_NAME_SIZE); isp1301_i2c_client = i2c_new_probed_device(i2c_adap, &i2c_info, - normal_i2c); + normal_i2c, NULL); i2c_put_adapter(i2c_adap); if (!isp1301_i2c_client) { err("failed to connect I2C to ISP1301 USB Transceiver"); diff --git a/drivers/video/matrox/i2c-matroxfb.c b/drivers/video/matrox/i2c-matroxfb.c index 403b14445a7830c7c29744acb8e92d6c9eb3ab2f..0fb280ead3dc1d76428cff3ace0b71f2cbf68802 100644 --- a/drivers/video/matrox/i2c-matroxfb.c +++ b/drivers/video/matrox/i2c-matroxfb.c @@ -191,7 +191,7 @@ static void* i2c_matroxfb_probe(struct matrox_fb_info* minfo) { }; i2c_new_probed_device(&m2info->maven.adapter, - &maven_info, addr_list); + &maven_info, addr_list, NULL); } } return m2info; diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 38dd4025aa4e47b9da99570e7f60ea72003ba600..59a9f3cdc0b5eabee5f4846589b9cc9b68e035b7 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -284,12 +284,15 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info); /* If you don't know the exact address of an I2C device, use this variant * instead, which can probe for device presence in a list of possible - * addresses. + * addresses. The "probe" callback function is optional. If it is provided, + * it must return 1 on successful probe, 0 otherwise. If it is not provided, + * a default probing method is used. */ extern struct i2c_client * i2c_new_probed_device(struct i2c_adapter *adap, struct i2c_board_info *info, - unsigned short const *addr_list); + unsigned short const *addr_list, + int (*probe)(struct i2c_adapter *, unsigned short addr)); /* For devices that use several addresses, use i2c_new_dummy() to make * client handles for the extra addresses.