diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-03 07:34:47 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-03 07:34:47 -0800 |
commit | a03696e912cd544e1504a79e49600cdb535f42db (patch) | |
tree | 7a9357153c3479f103cf74ea90ce4a5c983b0f2d | |
parent | 0a135ba14d71fb84c691a5386aff5049691fe6d7 (diff) | |
parent | 0c43ea544c1086fbbed5a6c99ea58eb64674ea8f (diff) |
Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
i2c: Document the message size limit
i2c-algo-pca: Drop duplicate variable
i2c: Hook up runtime PM support
i2c-parport-light: Add SMBus alert support
i2c-parport: Add SMBus alert support
i2c: Separate Kconfig option for i2c-smbus
i2c: Add SMBus alert support
i2c-parport: Give powered devices some time to settle
i2c-tiny-usb: Fix a comment on bus frequency
i2c-i801: Add Intel Cougar Point device IDs
i2c: Make PCI device ids constant
33 files changed, 537 insertions, 38 deletions
diff --git a/Documentation/i2c/busses/i2c-i801 b/Documentation/i2c/busses/i2c-i801 index 81c0c59a60ea..e1bb5b261693 100644 --- a/Documentation/i2c/busses/i2c-i801 +++ b/Documentation/i2c/busses/i2c-i801 @@ -15,7 +15,8 @@ Supported adapters: * Intel 82801I (ICH9) * Intel EP80579 (Tolapai) * Intel 82801JI (ICH10) - * Intel PCH + * Intel 3400/5 Series (PCH) + * Intel Cougar Point (PCH) Datasheets: Publicly available at the Intel website Authors: diff --git a/Documentation/i2c/busses/i2c-parport b/Documentation/i2c/busses/i2c-parport index dceaba1ad930..2461c7b53b2c 100644 --- a/Documentation/i2c/busses/i2c-parport +++ b/Documentation/i2c/busses/i2c-parport @@ -29,6 +29,9 @@ can be easily added when needed. Earlier kernels defaulted to type=0 (Philips). But now, if the type parameter is missing, the driver will simply fail to initialize. +SMBus alert support is available on adapters which have this line properly +connected to the parallel port's interrupt pin. + Building your own adapter ------------------------- diff --git a/Documentation/i2c/busses/i2c-parport-light b/Documentation/i2c/busses/i2c-parport-light index 287436478520..bdc9cbb2e0f2 100644 --- a/Documentation/i2c/busses/i2c-parport-light +++ b/Documentation/i2c/busses/i2c-parport-light @@ -9,3 +9,14 @@ parport handling is not an option. The drawback is a reduced portability and the impossibility to daisy-chain other parallel port devices. Please see i2c-parport for documentation. + +Module parameters: + +* type: type of adapter (see i2c-parport or modinfo) + +* base: base I/O address + Default is 0x378 which is fairly common for parallel ports, at least on PC. + +* irq: optional IRQ + This must be passed if you want SMBus alert support, assuming your adapter + actually supports this. diff --git a/Documentation/i2c/smbus-protocol b/Documentation/i2c/smbus-protocol index 9df47441f0e7..7c19d1a2bea0 100644 --- a/Documentation/i2c/smbus-protocol +++ b/Documentation/i2c/smbus-protocol @@ -185,6 +185,22 @@ the protocol. All ARP communications use slave address 0x61 and require PEC checksums. +SMBus Alert +=========== + +SMBus Alert was introduced in Revision 1.0 of the specification. + +The SMBus alert protocol allows several SMBus slave devices to share a +single interrupt pin on the SMBus master, while still allowing the master +to know which slave triggered the interrupt. + +This is implemented the following way in the Linux kernel: +* I2C bus drivers which support SMBus alert should call + i2c_setup_smbus_alert() to setup SMBus alert support. +* I2C drivers for devices which can trigger SMBus alerts should implement + the optional alert() callback. + + I2C Block Transactions ====================== diff --git a/Documentation/i2c/writing-clients b/Documentation/i2c/writing-clients index 0a74603eb671..3219ee0dbfef 100644 --- a/Documentation/i2c/writing-clients +++ b/Documentation/i2c/writing-clients @@ -318,8 +318,9 @@ Plain I2C communication These routines read and write some bytes from/to a client. The client contains the i2c address, so you do not have to include it. The second parameter contains the bytes to read/write, the third the number of bytes -to read/write (must be less than the length of the buffer.) Returned is -the actual number of bytes read/written. +to read/write (must be less than the length of the buffer, also should be +less than 64k since msg.len is u16.) Returned is the actual number of bytes +read/written. int i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msg, int num); diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index 8d8a00e5a30e..02ce9cff5fcf 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -61,6 +61,16 @@ config I2C_HELPER_AUTO In doubt, say Y. +config I2C_SMBUS + tristate "SMBus-specific protocols" if !I2C_HELPER_AUTO + help + Say Y here if you want support for SMBus extensions to the I2C + specification. At the moment, the only supported extension is + the SMBus alert protocol. + + This support is also available as a module. If so, the module + will be called i2c-smbus. + source drivers/i2c/algos/Kconfig source drivers/i2c/busses/Kconfig source drivers/i2c/chips/Kconfig diff --git a/drivers/i2c/Makefile b/drivers/i2c/Makefile index ba26e6cbe74e..acd0250c16a0 100644 --- a/drivers/i2c/Makefile +++ b/drivers/i2c/Makefile @@ -4,6 +4,7 @@ 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/ diff --git a/drivers/i2c/algos/i2c-algo-pca.c b/drivers/i2c/algos/i2c-algo-pca.c index 78d42aae0089..dcdaf8e675bf 100644 --- a/drivers/i2c/algos/i2c-algo-pca.c +++ b/drivers/i2c/algos/i2c-algo-pca.c @@ -453,8 +453,6 @@ static int pca_init(struct i2c_adapter *adap) */ int raise_fall_time; - struct i2c_algo_pca_data *pca_data = adap->algo_data; - /* Ignore the reset function from the module, * we can use the parallel bus reset */ diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index 737f05200b1d..4cc3807bd31c 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -77,7 +77,7 @@ config I2C_AMD8111 will be called i2c-amd8111. config I2C_I801 - tristate "Intel 82801 (ICH)" + tristate "Intel 82801 (ICH/PCH)" depends on PCI help If you say yes to this option, support will be included for the Intel @@ -97,7 +97,8 @@ config I2C_I801 ICH9 Tolapai ICH10 - PCH + 3400/5 Series (PCH) + Cougar Point (PCH) This driver can also be built as a module. If so, the module will be called i2c-i801. @@ -580,6 +581,7 @@ config I2C_PARPORT tristate "Parallel port adapter" depends on PARPORT select I2C_ALGOBIT + select I2C_SMBUS help This supports parallel port I2C adapters such as the ones made by Philips or Velleman, Analog Devices evaluation boards, and more. @@ -603,6 +605,7 @@ config I2C_PARPORT config I2C_PARPORT_LIGHT tristate "Parallel port adapter (light)" select I2C_ALGOBIT + select I2C_SMBUS help This supports parallel port I2C adapters such as the ones made by Philips or Velleman, Analog Devices evaluation boards, and more. diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c index 8de7d7b87bb0..bd8f1e4d9e6c 100644 --- a/drivers/i2c/busses/i2c-ali1535.c +++ b/drivers/i2c/busses/i2c-ali1535.c @@ -480,7 +480,7 @@ static struct i2c_adapter ali1535_adapter = { .algo = &smbus_algorithm, }; -static struct pci_device_id ali1535_ids[] = { +static const struct pci_device_id ali1535_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101) }, { }, }; diff --git a/drivers/i2c/busses/i2c-ali1563.c b/drivers/i2c/busses/i2c-ali1563.c index 4687af40dd50..a409cfcf0629 100644 --- a/drivers/i2c/busses/i2c-ali1563.c +++ b/drivers/i2c/busses/i2c-ali1563.c @@ -417,7 +417,7 @@ static void __devexit ali1563_remove(struct pci_dev * dev) ali1563_shutdown(dev); } -static struct pci_device_id __devinitdata ali1563_id_table[] = { +static const struct pci_device_id ali1563_id_table[] __devinitconst = { { PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1563) }, {}, }; diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c index e7e3205f1286..659f63f5e4af 100644 --- a/drivers/i2c/busses/i2c-ali15x3.c +++ b/drivers/i2c/busses/i2c-ali15x3.c @@ -477,7 +477,7 @@ static struct i2c_adapter ali15x3_adapter = { .algo = &smbus_algorithm, }; -static struct pci_device_id ali15x3_ids[] = { +static const struct pci_device_id ali15x3_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101) }, { 0, } }; diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c index 8f0b90ef8c76..c5a9fa488e7f 100644 --- a/drivers/i2c/busses/i2c-amd756.c +++ b/drivers/i2c/busses/i2c-amd756.c @@ -308,7 +308,7 @@ static const char* chipname[] = { "nVidia nForce", "AMD8111", }; -static struct pci_device_id amd756_ids[] = { +static const struct pci_device_id amd756_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_740B), .driver_data = AMD756 }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7413), diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c index 5b4ad86ca166..d0dc970d7370 100644 --- a/drivers/i2c/busses/i2c-amd8111.c +++ b/drivers/i2c/busses/i2c-amd8111.c @@ -351,7 +351,7 @@ static const struct i2c_algorithm smbus_algorithm = { }; -static struct pci_device_id amd8111_ids[] = { +static const struct pci_device_id amd8111_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS2) }, { 0, } }; diff --git a/drivers/i2c/busses/i2c-hydra.c b/drivers/i2c/busses/i2c-hydra.c index bec9b845dd16..c767295ad1fb 100644 --- a/drivers/i2c/busses/i2c-hydra.c +++ b/drivers/i2c/busses/i2c-hydra.c @@ -105,7 +105,7 @@ static struct i2c_adapter hydra_adap = { .algo_data = &hydra_bit_data, }; -static struct pci_device_id hydra_ids[] = { +static const struct pci_device_id hydra_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_APPLE, PCI_DEVICE_ID_APPLE_HYDRA) }, { 0, } }; diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index df6ab553f975..9da5b05cdb52 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -41,7 +41,8 @@ Tolapai 0x5032 32 hard yes yes yes ICH10 0x3a30 32 hard yes yes yes ICH10 0x3a60 32 hard yes yes yes - PCH 0x3b30 32 hard yes yes yes + 3400/5 Series (PCH) 0x3b30 32 hard yes yes yes + Cougar Point (PCH) 0x1c22 32 hard yes yes yes Features supported by this driver: Software PEC no @@ -561,7 +562,7 @@ static struct i2c_adapter i801_adapter = { .algo = &smbus_algorithm, }; -static struct pci_device_id i801_ids[] = { +static const struct pci_device_id i801_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_3) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_3) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_2) }, @@ -578,6 +579,7 @@ static struct pci_device_id i801_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_4) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_5) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PCH_SMBUS) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CPT_SMBUS) }, { 0, } }; @@ -707,6 +709,7 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id case PCI_DEVICE_ID_INTEL_ICH10_4: case PCI_DEVICE_ID_INTEL_ICH10_5: case PCI_DEVICE_ID_INTEL_PCH_SMBUS: + case PCI_DEVICE_ID_INTEL_CPT_SMBUS: i801_features |= FEATURE_I2C_BLOCK_READ; /* fall through */ case PCI_DEVICE_ID_INTEL_82801DB_3: diff --git a/drivers/i2c/busses/i2c-isch.c b/drivers/i2c/busses/i2c-isch.c index dba6eb053e2f..69c22f79f231 100644 --- a/drivers/i2c/busses/i2c-isch.c +++ b/drivers/i2c/busses/i2c-isch.c @@ -256,7 +256,7 @@ static struct i2c_adapter sch_adapter = { .algo = &smbus_algorithm, }; -static struct pci_device_id sch_ids[] = { +static const struct pci_device_id sch_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_SCH_LPC) }, { 0, } }; diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index ec11d1c4e77b..4a700587ef18 100644 --- a/drivers/i2c/busses/i2c-nforce2.c +++ b/drivers/i2c/busses/i2c-nforce2.c @@ -308,7 +308,7 @@ static struct i2c_algorithm smbus_algorithm = { }; -static struct pci_device_id nforce2_ids[] = { +static const struct pci_device_id nforce2_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2_SMBUS) }, { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SMBUS) }, { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3_SMBUS) }, diff --git a/drivers/i2c/busses/i2c-parport-light.c b/drivers/i2c/busses/i2c-parport-light.c index 322c5691e38e..5f41ec0f72d2 100644 --- a/drivers/i2c/busses/i2c-parport-light.c +++ b/drivers/i2c/busses/i2c-parport-light.c @@ -1,7 +1,7 @@ /* ------------------------------------------------------------------------ * * i2c-parport-light.c I2C bus over parallel port * * ------------------------------------------------------------------------ * - Copyright (C) 2003-2007 Jean Delvare <khali@linux-fr.org> + Copyright (C) 2003-2010 Jean Delvare <khali@linux-fr.org> Based on older i2c-velleman.c driver Copyright (C) 1995-2000 Simon G. Vogl @@ -27,10 +27,12 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> +#include <linux/delay.h> #include <linux/platform_device.h> #include <linux/ioport.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> +#include <linux/i2c-smbus.h> #include <asm/io.h> #include "i2c-parport.h" @@ -43,6 +45,10 @@ static u16 base; module_param(base, ushort, 0); MODULE_PARM_DESC(base, "Base I/O address"); +static int irq; +module_param(irq, int, 0); +MODULE_PARM_DESC(irq, "IRQ (optional)"); + /* ----- Low-level parallel port access ----------------------------------- */ static inline void port_write(unsigned char p, unsigned char d) @@ -119,6 +125,16 @@ static struct i2c_adapter parport_adapter = { .name = "Parallel port adapter (light)", }; +/* SMBus alert support */ +static struct i2c_smbus_alert_setup alert_data = { + .alert_edge_triggered = 1, +}; +static struct i2c_client *ara; +static struct lineop parport_ctrl_irq = { + .val = (1 << 4), + .port = CTRL, +}; + static int __devinit i2c_parport_probe(struct platform_device *pdev) { int err; @@ -127,18 +143,39 @@ static int __devinit i2c_parport_probe(struct platform_device *pdev) parport_setsda(NULL, 1); parport_setscl(NULL, 1); /* Other init if needed (power on...) */ - if (adapter_parm[type].init.val) + if (adapter_parm[type].init.val) { line_set(1, &adapter_parm[type].init); + /* Give powered devices some time to settle */ + msleep(100); + } parport_adapter.dev.parent = &pdev->dev; err = i2c_bit_add_bus(&parport_adapter); - if (err) + if (err) { dev_err(&pdev->dev, "Unable to register with I2C\n"); - return err; + return err; + } + + /* Setup SMBus alert if supported */ + if (adapter_parm[type].smbus_alert && irq) { + alert_data.irq = irq; + ara = i2c_setup_smbus_alert(&parport_adapter, &alert_data); + if (ara) + line_set(1, &parport_ctrl_irq); + else + dev_warn(&pdev->dev, "Failed to register ARA client\n"); + } + + return 0; } static int __devexit i2c_parport_remove(struct platform_device *pdev) { + if (ara) { + line_set(0, &parport_ctrl_irq); + i2c_unregister_device(ara); + ara = NULL; + } i2c_del_adapter(&parport_adapter); /* Un-init if needed (power off...) */ @@ -205,6 +242,9 @@ static int __init i2c_parport_init(void) if (!request_region(base, 3, DRVNAME)) return -EBUSY; + if (irq != 0) + pr_info(DRVNAME ": using irq %d\n", irq); + if (!adapter_parm[type].getscl.val) parport_algo_data.getscl = NULL; diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c index 0d8998610c74..220fca7f23a6 100644 --- a/drivers/i2c/busses/i2c-parport.c +++ b/drivers/i2c/busses/i2c-parport.c @@ -1,7 +1,7 @@ /* ------------------------------------------------------------------------ * * i2c-parport.c I2C bus over parallel port * * ------------------------------------------------------------------------ * - Copyright (C) 2003-2007 Jean Delvare <khali@linux-fr.org> + Copyright (C) 2003-2010 Jean Delvare <khali@linux-fr.org> Based on older i2c-philips-par.c driver Copyright (C) 1995-2000 Simon G. Vogl @@ -27,9 +27,11 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> +#include <linux/delay.h> #include <linux/parport.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> +#include <linux/i2c-smbus.h> #include "i2c-parport.h" /* ----- Device list ------------------------------------------------------ */ @@ -38,6 +40,8 @@ struct i2c_par { struct pardevice *pdev; struct i2c_adapter adapter; struct i2c_algo_bit_data algo_data; + struct i2c_smbus_alert_setup alert_data; + struct i2c_client *ara; struct i2c_par *next; }; @@ -143,6 +147,19 @@ static struct i2c_algo_bit_data parport_algo_data = { /* ----- I2c and parallel port call-back functions and structures --------- */ +void i2c_parport_irq(void *data) +{ + struct i2c_par *adapter = data; + struct i2c_client *ara = adapter->ara; + + if (ara) { + dev_dbg(&ara->dev, "SMBus alert received\n"); + i2c_handle_smbus_alert(ara); + } else + dev_dbg(&adapter->adapter.dev, + "SMBus alert received but no ARA client!\n"); +} + static void i2c_parport_attach (struct parport *port) { struct i2c_par *adapter; @@ -154,8 +171,9 @@ static void i2c_parport_attach (struct parport *port) } pr_debug("i2c-parport: attaching to %s\n", port->name); + parport_disable_irq(port); adapter->pdev = parport_register_device(port, "i2c-parport", - NULL, NULL, NULL, PARPORT_FLAG_EXCL, NULL); + NULL, NULL, i2c_parport_irq, PARPORT_FLAG_EXCL, adapter); if (!adapter->pdev) { printk(KERN_ERR "i2c-parport: Unable to register with parport\n"); goto ERROR0; @@ -185,14 +203,29 @@ static void i2c_parport_attach (struct parport *port) parport_setsda(port, 1); parport_setscl(port, 1); /* Other init if needed (power on...) */ - if (adapter_parm[type].init.val) + if (adapter_parm[type].init.val) { line_set(port, 1, &adapter_parm[type].init); + /* Give powered devices some time to settle */ + msleep(100); + } if (i2c_bit_add_bus(&adapter->adapter) < 0) { printk(KERN_ERR "i2c-parport: Unable to register with I2C\n"); goto ERROR1; } + /* Setup SMBus alert if supported */ + if (adapter_parm[type].smbus_alert) { + adapter->alert_data.alert_edge_triggered = 1; + adapter->ara = i2c_setup_smbus_alert(&adapter->adapter, + &adapter->alert_data); + if (adapter->ara) + parport_enable_irq(port); + else + printk(KERN_WARNING "i2c-parport: Failed to register " + "ARA client\n"); + } + /* Add the new adapter to the list */ adapter->next = adapter_list; adapter_list = adapter; @@ -213,6 +246,10 @@ static void i2c_parport_detach (struct parport *port) for (prev = NULL, adapter = adapter_list; adapter; prev = adapter, adapter = adapter->next) { if (adapter->pdev->port == port) { + if (adapter->ara) { + parport_disable_irq(port); + i2c_unregister_device(adapter->ara); + } i2c_del_adapter(&adapter->adapter); /* Un-init if needed (power off...) */ diff --git a/drivers/i2c/busses/i2c-parport.h b/drivers/i2c/busses/i2c-parport.h index ed69d846cb95..a9f66816546c 100644 --- a/drivers/i2c/busses/i2c-parport.h +++ b/drivers/i2c/busses/i2c-parport.h @@ -1,7 +1,7 @@ /* ------------------------------------------------------------------------ * * i2c-parport.h I2C bus over parallel port * * ------------------------------------------------------------------------ * - Copyright (C) 2003-2004 Jean Delvare <khali@linux-fr.org> + Copyright (C) 2003-2010 Jean Delvare <khali@linux-fr.org> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -38,6 +38,7 @@ struct adapter_parm { struct lineop getsda; struct lineop getscl; struct lineop init; + unsigned int smbus_alert:1; }; static struct adapter_parm adapter_parm[] = { @@ -73,6 +74,7 @@ static struct adapter_parm adapter_parm[] = { .setscl = { 0x01, DATA, 1 }, .getsda = { 0x10, STAT, 1 }, .init = { 0xf0, DATA, 0 }, + .smbus_alert = 1, }, /* type 5: ADM1025, ADM1030 and ADM1031 evaluation boards */ { diff --git a/drivers/i2c/busses/i2c-pasemi.c b/drivers/i2c/busses/i2c-pasemi.c index adf0fbb902f0..0d20ff46a518 100644 --- a/drivers/i2c/busses/i2c-pasemi.c +++ b/drivers/i2c/busses/i2c-pasemi.c @@ -400,7 +400,7 @@ static void __devexit pasemi_smb_remove(struct pci_dev *dev) kfree(smbus); } -static struct pci_device_id pasemi_smb_ids[] = { +static const struct pci_device_id pasemi_smb_ids[] = { { PCI_DEVICE(0x1959, 0xa003) }, { 0, } }; diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index e56e4b6823ca..ee9da6fcf69a 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -472,7 +472,7 @@ static struct i2c_adapter piix4_adapter = { .algo = &smbus_algorithm, }; -static struct pci_device_id piix4_ids[] = { +static const struct pci_device_id piix4_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3) }, { PCI_DEVICE(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_3) }, diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c index 844569f7d8b7..55a71370c79b 100644 --- a/drivers/i2c/busses/i2c-sis5595.c +++ b/drivers/i2c/busses/i2c-sis5595.c @@ -369,7 +369,7 @@ static struct i2c_adapter sis5595_adapter = { .algo = &smbus_algorithm, }; -static struct pci_device_id sis5595_ids[] __devinitdata = { +static const struct pci_device_id sis5595_ids[] __devinitconst = { { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, { 0, } }; diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c index 68cff7af7013..2309c7f1bde2 100644 --- a/drivers/i2c/busses/i2c-sis630.c +++ b/drivers/i2c/busses/i2c-sis630.c @@ -468,7 +468,7 @@ static struct i2c_adapter sis630_adapter = { .algo = &smbus_algorithm, }; -static struct pci_device_id sis630_ids[] __devinitdata = { +static const struct pci_device_id sis630_ids[] __devinitconst = { { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503) }, { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC) }, { 0, } diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c index 1649963b00dc..d43d8f8943dd 100644 --- a/drivers/i2c/busses/i2c-sis96x.c +++ b/drivers/i2c/busses/i2c-sis96x.c @@ -245,7 +245,7 @@ static struct i2c_adapter sis96x_adapter = { .algo = &smbus_algorithm, }; -static struct pci_device_id sis96x_ids[] = { +static const struct pci_device_id sis96x_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_SMBUS) }, { 0, } }; diff --git a/drivers/i2c/busses/i2c-tiny-usb.c b/drivers/i2c/busses/i2c-tiny-usb.c index e29b6d5ba8ef..b5b1bbf37d3c 100644 --- a/drivers/i2c/busses/i2c-tiny-usb.c +++ b/drivers/i2c/busses/i2c-tiny-usb.c @@ -31,11 +31,13 @@ #define CMD_I2C_IO_BEGIN (1<<0) #define CMD_I2C_IO_END (1<<1) -/* i2c bit delay, default is 10us -> 100kHz */ +/* i2c bit delay, default is 10us -> 100kHz max + (in practice, due to additional delays in the i2c bitbanging + code this results in a i2c clock of about 50kHz) */ static unsigned short delay = 10; module_param(delay, ushort, 0); -MODULE_PARM_DESC(delay, "bit delay in microseconds, " - "e.g. 10 for 100kHz (default is 100kHz)"); +MODULE_PARM_DESC(delay, "bit delay in microseconds " + "(default is 10us for 100kHz max)"); static int usb_read(struct i2c_adapter *adapter, int cmd, int value, int index, void *data, int len); @@ -137,7 +139,7 @@ static const struct i2c_algorithm usb_algorithm = { * Future Technology Devices International Ltd., later a pair was * bought from EZPrototypes */ -static struct usb_device_id i2c_tiny_usb_table [] = { +static const struct usb_device_id i2c_tiny_usb_table[] = { { USB_DEVICE(0x0403, 0xc631) }, /* FTDI */ { USB_DEVICE(0x1c40, 0x0534) }, /* EZPrototypes */ { } /* Terminating entry */ diff --git a/drivers/i2c/busses/i2c-via.c b/drivers/i2c/busses/i2c-via.c index 8b24f192103a..de78283bddbe 100644 --- a/drivers/i2c/busses/i2c-via.c +++ b/drivers/i2c/busses/i2c-via.c @@ -89,7 +89,7 @@ static struct i2c_adapter vt586b_adapter = { }; -static struct pci_device_id vt586b_ids[] __devinitdata = { +static const struct pci_device_id vt586b_ids[] __devinitconst = { { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3) }, { 0, } }; diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c index a84a909e1234..d57292e5dae0 100644 --- a/drivers/i2c/busses/i2c-viapro.c +++ b/drivers/i2c/busses/i2c-viapro.c @@ -444,7 +444,7 @@ release_region: return error; } -static struct pci_device_id vt596_ids[] = { +static const struct pci_device_id vt596_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596_3), .driver_data = SMBBA1 }, { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596B_3), diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 10be7b5fbe97..3202a86f420e 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -34,6 +34,7 @@ #include <linux/hardirq.h> #include <linux/irqflags.h> #include <linux/rwsem.h> +#include <linux/pm_runtime.h> #include <asm/uaccess.h> |