diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index 02ce9cff5fcf..d06083fdffbb 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -73,7 +73,6 @@ config I2C_SMBUS source drivers/i2c/algos/Kconfig source drivers/i2c/busses/Kconfig -source drivers/i2c/chips/Kconfig config I2C_DEBUG_CORE bool "I2C Core debugging messages" @@ -98,12 +97,4 @@ config I2C_DEBUG_BUS a problem with I2C support and want to see more of what is going on. -config I2C_DEBUG_CHIP - bool "I2C Chip debugging messages" - help - Say Y here if you want the I2C chip drivers to produce a bunch of - debug messages to the system log. Select this if you are having - a problem with I2C support and want to see more of what is going - on. - endif # I2C diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile index acd0250c16a0..a7d9b4be9bb3 100644 --- a/drivers/i2c/Makefile +++ b/drivers/i2c/Makefile @@ -6,7 +6,7 @@ obj-$(CONFIG_I2C_BOARDINFO) += i2c-boardinfo.o obj-$(CONFIG_I2C) += i2c-core.o obj-$(CONFIG_I2C_SMBUS) += i2c-smbus.o obj-$(CONFIG_I2C_CHARDEV) += i2c-dev.o -obj-y += busses/ chips/ algos/ +obj-y += algos/ busses/ ifeq ($(CONFIG_I2C_DEBUG_CORE),y) EXTRA_CFLAGS += -DDEBUG diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c index e25e13980af3..e8d568c3fb09 100644 --- a/drivers/i2c/algos/i2c-algo-bit.c +++ b/drivers/i2c/algos/i2c-algo-bit.c @@ -522,6 +522,12 @@ static int bit_xfer(struct i2c_adapter *i2c_adap, int i, ret; unsigned short nak_ok; + if (adap->pre_xfer) { + ret = adap->pre_xfer(i2c_adap); + if (ret < 0) + return ret; + } + bit_dbg(3, &i2c_adap->dev, "emitting start condition\n"); i2c_start(adap); for (i = 0; i < num; i++) { @@ -570,6 +576,9 @@ static int bit_xfer(struct i2c_adapter *i2c_adap, bailout: bit_dbg(3, &i2c_adap->dev, "emitting stop condition\n"); i2c_stop(adap); + + if (adap->post_xfer) + adap->post_xfer(i2c_adap); return ret; } diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 9da5b05cdb52..299b918455a3 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -416,9 +416,11 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write, data->block[0] = 32; /* max for SMBus block reads */ } + /* Experience has shown that the block buffer can only be used for + SMBus (not I2C) block transactions, even though the datasheet + doesn't mention this limitation. */ if ((i801_features & FEATURE_BLOCK_BUFFER) - && !(command == I2C_SMBUS_I2C_BLOCK_DATA - && read_write == I2C_SMBUS_READ) + && command != I2C_SMBUS_I2C_BLOCK_DATA && i801_set_block_buffer_mode() == 0) result = i801_block_transaction_by_block(data, read_write, hwpec); diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c index 1c440a70ec61..b289ec99eeba 100644 --- a/drivers/i2c/busses/i2c-powermac.c +++ b/drivers/i2c/busses/i2c-powermac.c @@ -122,9 +122,14 @@ static s32 i2c_powermac_smbus_xfer( struct i2c_adapter* adap, rc = pmac_i2c_xfer(bus, addrdir, subsize, subaddr, buf, len); if (rc) { - dev_err(&adap->dev, - "I2C transfer at 0x%02x failed, size %d, err %d\n", - addrdir >> 1, size, rc); + if (rc == -ENXIO) + dev_dbg(&adap->dev, + "I2C transfer at 0x%02x failed, size %d, " + "err %d\n", addrdir >> 1, size, rc); + else + dev_err(&adap->dev, + "I2C transfer at 0x%02x failed, size %d, " + "err %d\n", addrdir >> 1, size, rc); goto bail; } @@ -175,10 +180,16 @@ static int i2c_powermac_master_xfer( struct i2c_adapter *adap, goto bail; } rc = pmac_i2c_xfer(bus, addrdir, 0, 0, msgs->buf, msgs->len); - if (rc < 0) - dev_err(&adap->dev, "I2C %s 0x%02x failed, err %d\n", - addrdir & 1 ? "read from" : "write to", addrdir >> 1, - rc); + if (rc < 0) { + if (rc == -ENXIO) + dev_dbg(&adap->dev, "I2C %s 0x%02x failed, err %d\n", + addrdir & 1 ? "read from" : "write to", + addrdir >> 1, rc); + else + dev_err(&adap->dev, "I2C %s 0x%02x failed, err %d\n", + addrdir & 1 ? "read from" : "write to", + addrdir >> 1, rc); + } bail: pmac_i2c_close(bus); return rc < 0 ? rc : 1; diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig deleted file mode 100644 index ae4539d99bef..000000000000 --- a/drivers/i2c/chips/Kconfig +++ /dev/null @@ -1,19 +0,0 @@ -# -# Miscellaneous I2C chip drivers configuration -# -# *** DEPRECATED! Do not add new entries! See Makefile *** -# - -menu "Miscellaneous I2C Chip support" - -config SENSORS_TSL2550 - tristate "Taos TSL2550 ambient light sensor" - depends on EXPERIMENTAL - help - If you say yes here you get support for the Taos TSL2550 - ambient light sensor. - - This driver can also be built as a module. If so, the module - will be called tsl2550. - -endmenu diff --git a/drivers/i2c/chips/Makefile b/drivers/i2c/chips/Makefile deleted file mode 100644 index fe0af0f81f2d..000000000000 --- a/drivers/i2c/chips/Makefile +++ /dev/null @@ -1,18 +0,0 @@ -# -# Makefile for miscellaneous I2C chip drivers. -# -# Do not add new drivers to this directory! It is DEPRECATED. -# -# Device drivers are better grouped according to the functionality they -# implement rather than to the bus they are connected to. In particular: -# * Hardware monitoring chip drivers go to drivers/hwmon -# * RTC chip drivers go to drivers/rtc -# * I/O expander drivers go to drivers/gpio -# - -obj-$(CONFIG_SENSORS_TSL2550) += tsl2550.o - -ifeq ($(CONFIG_I2C_DEBUG_CHIP),y) -EXTRA_CFLAGS += -DDEBUG -endif - diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c index 421278221243..7a8201ed2181 100644 --- a/drivers/i2c/i2c-smbus.c +++ b/drivers/i2c/i2c-smbus.c @@ -22,7 +22,6 @@ #include #include #include -#include #include #include #include @@ -55,7 +54,7 @@ static int smbus_do_alert(struct device *dev, void *addrp) * Drivers should either disable alerts, or provide at least * a minimal handler. Lock so client->driver won't change. */ - down(&dev->sem); + device_lock(dev); if (client->driver) { if (client->driver->alert) client->driver->alert(client, data->flag); @@ -63,7 +62,7 @@ static int smbus_do_alert(struct device *dev, void *addrp) dev_warn(&client->dev, "no driver alert()!\n"); } else dev_dbg(&client->dev, "alert with no driver\n"); - up(&dev->sem); + device_unlock(dev); /* Stop iterating after we find the device */ return -EBUSY; diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index d16af6a423fb..2191c8d896a0 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -268,6 +268,16 @@ config ISL29003 This driver can also be built as a module. If so, the module will be called isl29003. +config SENSORS_TSL2550 + tristate "Taos TSL2550 ambient light sensor" + depends on I2C && SYSFS + help + If you say yes here you get support for the Taos TSL2550 + ambient light sensor. + + This driver can also be built as a module. If so, the module + will be called tsl2550. + config EP93XX_PWM tristate "EP93xx PWM support" depends on ARCH_EP93XX diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile index 049ff2482f30..27c484355414 100644 --- a/drivers/misc/Makefile +++ b/drivers/misc/Makefile @@ -21,6 +21,7 @@ obj-$(CONFIG_SGI_GRU) += sgi-gru/ obj-$(CONFIG_CS5535_MFGPT) += cs5535-mfgpt.o obj-$(CONFIG_HP_ILO) += hpilo.o obj-$(CONFIG_ISL29003) += isl29003.o +obj-$(CONFIG_SENSORS_TSL2550) += tsl2550.o obj-$(CONFIG_EP93XX_PWM) += ep93xx_pwm.o obj-$(CONFIG_DS1682) += ds1682.o obj-$(CONFIG_TI_DAC7512) += ti_dac7512.o diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 2cb2736d65aa..db7d0f21b65d 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -505,6 +505,7 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id) * Export the EEPROM bytes through sysfs, since that's convenient. * By default, only root should see the data (maybe passwords etc) */ + sysfs_bin_attr_init(&at24->bin); at24->bin.attr.name = "eeprom"; at24->bin.attr.mode = chip.flags & AT24_FLAG_IRUGO ? S_IRUGO : S_IRUSR; at24->bin.read = at24_bin_read; diff --git a/drivers/i2c/chips/tsl2550.c b/drivers/misc/tsl2550.c similarity index 99% rename from drivers/i2c/chips/tsl2550.c rename to drivers/misc/tsl2550.c index a0702f36a72f..483ae5f7f68e 100644 --- a/drivers/i2c/chips/tsl2550.c +++ b/drivers/misc/tsl2550.c @@ -47,8 +47,8 @@ struct tsl2550_data { struct i2c_client *client; struct mutex update_lock; - unsigned int power_state : 1; - unsigned int operating_mode : 1; + unsigned int power_state:1; + unsigned int operating_mode:1; }; /* diff --git a/include/linux/i2c-algo-bit.h b/include/linux/i2c-algo-bit.h index 111334f5b922..4f98148c11c3 100644 --- a/include/linux/i2c-algo-bit.h +++ b/include/linux/i2c-algo-bit.h @@ -36,6 +36,8 @@ struct i2c_algo_bit_data { void (*setscl) (void *data, int state); int (*getsda) (void *data); int (*getscl) (void *data); + int (*pre_xfer) (struct i2c_adapter *); + void (*post_xfer) (struct i2c_adapter *); /* local settings */ int udelay; /* half clock cycle time in us,