diff options
Diffstat (limited to 'drivers/i2c/busses')
| -rw-r--r-- | drivers/i2c/busses/Kconfig | 18 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-core.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 185 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-parport.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 1 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-scmi.c | 14 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-viapro.c | 3 | ||||
| -rw-r--r-- | drivers/i2c/busses/scx200_acb.c | 24 | ||||
| -rw-r--r-- | drivers/i2c/busses/scx200_i2c.c | 15 |
9 files changed, 213 insertions, 51 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index 42d9fdd63de..ff01c389e2d 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -3,6 +3,7 @@ # menu "I2C Hardware Bus support" + depends on HAS_IOMEM comment "PC SMBus host controller drivers" depends on PCI @@ -80,6 +81,7 @@ config I2C_I801 tristate "Intel 82801 (ICH/PCH)" depends on PCI select CHECK_SIGNATURE if X86 && DMI + select GPIOLIB if I2C_MUX help If you say yes to this option, support will be included for the Intel 801 family of mainboard I2C interfaces. Specifically, the following @@ -224,7 +226,7 @@ config I2C_VIA will be called i2c-via. config I2C_VIAPRO - tristate "VIA VT82C596/82C686/82xx and CX700/VX8xx" + tristate "VIA VT82C596/82C686/82xx and CX700/VX8xx/VX900" depends on PCI help If you say yes to this option, support will be included for the VIA @@ -240,6 +242,7 @@ config I2C_VIAPRO CX700 VX800/VX820 VX855/VX875 + VX900 This driver can also be built as a module. If so, the module will be called i2c-viapro. @@ -849,19 +852,6 @@ config I2C_SIBYTE help Supports the SiByte SOC on-chip I2C interfaces (2 channels). -config I2C_STUB - tristate "I2C/SMBus Test Stub" - depends on EXPERIMENTAL && m - default 'n' - help - This module may be useful to developers of SMBus client drivers, - especially for certain kinds of sensor chips. - - If you do build this module, be sure to read the notes and warnings - in <file:Documentation/i2c/i2c-stub>. - - If you don't know what to do here, definitely say N. - config SCx200_I2C tristate "NatSemi SCx200 I2C using GPIO pins (DEPRECATED)" depends on SCx200_GPIO diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index 7b8ebbefb58..cbba7db9ad5 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -370,7 +370,7 @@ static void i2c_dw_xfer_init(struct dw_i2c_dev *dev) * messages into the tx buffer. Even if the size of i2c_msg data is * longer than the size of the tx buffer, it handles everything. */ -void +static void i2c_dw_xfer_msg(struct dw_i2c_dev *dev) { struct i2c_msg *msgs = dev->msgs; diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 33e9b0c09af..37793156bd9 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -80,6 +80,13 @@ #include <linux/dmi.h> #include <linux/slab.h> #include <linux/wait.h> +#include <linux/err.h> + +#if defined CONFIG_I2C_MUX || defined CONFIG_I2C_MUX_MODULE +#include <linux/gpio.h> +#include <linux/i2c-mux-gpio.h> +#include <linux/platform_device.h> +#endif /* I801 SMBus address offsets */ #define SMBHSTSTS(p) (0 + (p)->smba) @@ -158,6 +165,15 @@ #define PCI_DEVICE_ID_INTEL_LYNXPOINT_SMBUS 0x8c22 #define PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_SMBUS 0x9c22 +struct i801_mux_config { + char *gpio_chip; + unsigned values[3]; + int n_values; + unsigned classes[3]; + unsigned gpios[2]; /* Relative to gpio_chip->base */ + int n_gpios; +}; + struct i801_priv { struct i2c_adapter adapter; unsigned long smba; @@ -175,6 +191,11 @@ struct i801_priv { int count; int len; u8 *data; + +#if defined CONFIG_I2C_MUX || defined CONFIG_I2C_MUX_MODULE + const struct i801_mux_config *mux_drvdata; + struct platform_device *mux_pdev; +#endif }; static struct pci_driver i801_driver; @@ -900,6 +921,165 @@ static void __init input_apanel_init(void) {} static void __devinit i801_probe_optional_slaves(struct i801_priv *priv) {} #endif /* CONFIG_X86 && CONFIG_DMI */ +#if defined CONFIG_I2C_MUX || defined CONFIG_I2C_MUX_MODULE +static struct i801_mux_config i801_mux_config_asus_z8_d12 = { + .gpio_chip = "gpio_ich", + .values = { 0x02, 0x03 }, + .n_values = 2, + .classes = { I2C_CLASS_SPD, I2C_CLASS_SPD }, + .gpios = { 52, 53 }, + .n_gpios = 2, +}; + +static struct i801_mux_config i801_mux_config_asus_z8_d18 = { + .gpio_chip = "gpio_ich", + .values = { 0x02, 0x03, 0x01 }, + .n_values = 3, + .classes = { I2C_CLASS_SPD, I2C_CLASS_SPD, I2C_CLASS_SPD }, + .gpios = { 52, 53 }, + .n_gpios = 2, +}; + +static struct dmi_system_id __devinitdata mux_dmi_table[] = { + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "Z8NA-D6(C)"), + }, + .driver_data = &i801_mux_config_asus_z8_d12, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "Z8P(N)E-D12(X)"), + }, + .driver_data = &i801_mux_config_asus_z8_d12, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "Z8NH-D12"), + }, + .driver_data = &i801_mux_config_asus_z8_d12, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "Z8PH-D12/IFB"), + }, + .driver_data = &i801_mux_config_asus_z8_d12, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "Z8NR-D12"), + }, + .driver_data = &i801_mux_config_asus_z8_d12, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "Z8P(N)H-D12"), + }, + .driver_data = &i801_mux_config_asus_z8_d12, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "Z8PG-D18"), + }, + .driver_data = &i801_mux_config_asus_z8_d18, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "Z8PE-D18"), + }, + .driver_data = &i801_mux_config_asus_z8_d18, + }, + { + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), + DMI_MATCH(DMI_BOARD_NAME, "Z8PS-D12"), + }, + .driver_data = &i801_mux_config_asus_z8_d12, + }, + { } +}; + +/* Setup multiplexing if needed */ +static int __devinit i801_add_mux(struct i801_priv *priv) +{ + struct device *dev = &priv->adapter.dev; + const struct i801_mux_config *mux_config; + struct i2c_mux_gpio_platform_data gpio_data; + int err; + + if (!priv->mux_drvdata) + return 0; + mux_config = priv->mux_drvdata; + + /* Prepare the platform data */ + memset(&gpio_data, 0, sizeof(struct i2c_mux_gpio_platform_data)); + gpio_data.parent = priv->adapter.nr; + gpio_data.values = mux_config->values; + gpio_data.n_values = mux_config->n_values; + gpio_data.classes = mux_config->classes; + gpio_data.gpio_chip = mux_config->gpio_chip; + gpio_data.gpios = mux_config->gpios; + gpio_data.n_gpios = mux_config->n_gpios; + gpio_data.idle = I2C_MUX_GPIO_NO_IDLE; + + /* Register the mux device */ + priv->mux_pdev = platform_device_register_data(dev, "i2c-mux-gpio", + PLATFORM_DEVID_AUTO, &gpio_data, + sizeof(struct i2c_mux_gpio_platform_data)); + if (IS_ERR(priv->mux_pdev)) { + err = PTR_ERR(priv->mux_pdev); + priv->mux_pdev = NULL; + dev_err(dev, "Failed to register i2c-mux-gpio device\n"); + return err; + } + + return 0; +} + +static void __devexit i801_del_mux(struct i801_priv *priv) +{ + if (priv->mux_pdev) + platform_device_unregister(priv->mux_pdev); +} + +static unsigned int __devinit i801_get_adapter_class(struct i801_priv *priv) +{ + const struct dmi_system_id *id; + const struct i801_mux_config *mux_config; + unsigned int class = I2C_CLASS_HWMON | I2C_CLASS_SPD; + int i; + + id = dmi_first_match(mux_dmi_table); + if (id) { + /* Remove from branch classes from trunk */ + mux_config = id->driver_data; + for (i = 0; i < mux_config->n_values; i++) + class &= ~mux_config->classes[i]; + + /* Remember for later */ + priv->mux_drvdata = mux_config; + } + + return class; +} +#else +static inline int i801_add_mux(struct i801_priv *priv) { return 0; } +static inline void i801_del_mux(struct i801_priv *priv) { } + +static inline unsigned int i801_get_adapter_class(struct i801_priv *priv) +{ + return I2C_CLASS_HWMON | I2C_CLASS_SPD; +} +#endif + static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id *id) { @@ -913,7 +1093,7 @@ static int __devinit i801_probe(struct pci_dev *dev, i2c_set_adapdata(&priv->adapter, priv); priv->adapter.owner = THIS_MODULE; - priv->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD; + priv->adapter.class = i801_get_adapter_class(priv); priv->adapter.algo = &smbus_algorithm; priv->pci_dev = dev; @@ -1033,6 +1213,8 @@ static int __devinit i801_probe(struct pci_dev *dev, } i801_probe_optional_slaves(priv); + /* We ignore errors - multiplexing is optional */ + i801_add_mux(priv); pci_set_drvdata(dev, priv); @@ -1052,6 +1234,7 @@ static void __devexit i801_remove(struct pci_dev *dev) { struct i801_priv *priv = pci_get_drvdata(dev); + i801_del_mux(priv); i2c_del_adapter(&priv->adapter); pci_write_config_byte(dev, SMBHSTCFG, priv->original_hstcfg); diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c index 24565687ac9..81d88786962 100644 --- a/drivers/i2c/busses/i2c-parport.c +++ b/drivers/i2c/busses/i2c-parport.c @@ -151,7 +151,7 @@ static const struct i2c_algo_bit_data parport_algo_data = { /* ----- I2c and parallel port call-back functions and structures --------- */ -void i2c_parport_irq(void *data) +static void i2c_parport_irq(void *data) { struct i2c_par *adapter = data; struct i2c_client *ara = adapter->ara; diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index ef511df2c96..8bbd6ece7c4 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -37,6 +37,7 @@ #include <linux/stddef.h> #include <linux/ioport.h> #include <linux/i2c.h> +#include <linux/slab.h> #include <linux/init.h> #include <linux/dmi.h> #include <linux/acpi.h> diff --git a/drivers/i2c/busses/i2c-scmi.c b/drivers/i2c/busses/i2c-scmi.c index 388cbdc96db..6aafa3d88ff 100644 --- a/drivers/i2c/busses/i2c-scmi.c +++ b/drivers/i2c/busses/i2c-scmi.c @@ -426,19 +426,7 @@ static struct acpi_driver acpi_smbus_cmi_driver = { .remove = acpi_smbus_cmi_remove, }, }; - -static int __init acpi_smbus_cmi_init(void) -{ - return acpi_bus_register_driver(&acpi_smbus_cmi_driver); -} - -static void __exit acpi_smbus_cmi_exit(void) -{ - acpi_bus_unregister_driver(&acpi_smbus_cmi_driver); -} - -module_init(acpi_smbus_cmi_init); -module_exit(acpi_smbus_cmi_exit); +module_acpi_driver(acpi_smbus_cmi_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR("Crane Cai <crane.cai@amd.com>"); diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c index 333011c83d5..271c9a2b0fd 100644 --- a/drivers/i2c/busses/i2c-viapro.c +++ b/drivers/i2c/busses/i2c-viapro.c @@ -401,6 +401,7 @@ found: case PCI_DEVICE_ID_VIA_CX700: case PCI_DEVICE_ID_VIA_VX800: case PCI_DEVICE_ID_VIA_VX855: + case PCI_DEVICE_ID_VIA_VX900: case PCI_DEVICE_ID_VIA_8251: case PCI_DEVICE_ID_VIA_8237: case PCI_DEVICE_ID_VIA_8237A: @@ -470,6 +471,8 @@ static DEFINE_PCI_DEVICE_TABLE(vt596_ids) = { .driver_data = SMBBA3 }, { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX855), .driver_data = SMBBA3 }, + { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VX900), + .driver_data = SMBBA3 }, { 0, } }; diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c index 2eacb7784d5..08aab57337d 100644 --- a/drivers/i2c/busses/scx200_acb.c +++ b/drivers/i2c/busses/scx200_acb.c @@ -23,6 +23,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> #include <linux/errno.h> #include <linux/kernel.h> @@ -37,8 +39,6 @@ #include <linux/scx200.h> -#define NAME "scx200_acb" - MODULE_AUTHOR("Christer Weinigel <wingel@nano-system.com>"); MODULE_DESCRIPTION("NatSemi SCx200 ACCESS.bus Driver"); MODULE_ALIAS("platform:cs5535-smb"); @@ -398,7 +398,7 @@ static __devinit int scx200_acb_probe(struct scx200_acb_iface *iface) outb(0x70, ACBCTL2); if (inb(ACBCTL2) != 0x70) { - pr_debug(NAME ": ACBCTL2 readback failed\n"); + pr_debug("ACBCTL2 readback failed\n"); return -ENXIO; } @@ -406,8 +406,7 @@ static __devinit int scx200_acb_probe(struct scx200_acb_iface *iface) val = inb(ACBCTL1); if (val) { - pr_debug(NAME ": disabled, but ACBCTL1=0x%02x\n", - val); + pr_debug("disabled, but ACBCTL1=0x%02x\n", val); return -ENXIO; } @@ -417,8 +416,8 @@ static __devinit int scx200_acb_probe(struct scx200_acb_iface *iface) val = inb(ACBCTL1); if ((val & ACBCTL1_NMINTE) != ACBCTL1_NMINTE) { - pr_debug(NAME ": enabled, but NMINTE won't be set, " - "ACBCTL1=0x%02x\n", val); + pr_debug("enabled, but NMINTE won't be set, ACBCTL1=0x%02x\n", + val); return -ENXIO; } @@ -433,7 +432,7 @@ static __devinit struct scx200_acb_iface *scx200_create_iface(const char *text, iface = kzalloc(sizeof(*iface), GFP_KERNEL); if (!iface) { - printk(KERN_ERR NAME ": can't allocate memory\n"); + pr_err("can't allocate memory\n"); return NULL; } @@ -459,14 +458,14 @@ static int __devinit scx200_acb_create(struct scx200_acb_iface *iface) rc = scx200_acb_probe(iface); if (rc) { - printk(KERN_WARNING NAME ": probe failed\n"); + pr_warn("probe failed\n"); return rc; } scx200_acb_reset(iface); if (i2c_add_adapter(adapter) < 0) { - printk(KERN_ERR NAME ": failed to register\n"); + pr_err("failed to register\n"); return -ENODEV; } @@ -493,8 +492,7 @@ static struct scx200_acb_iface * __devinit scx200_create_dev(const char *text, return NULL; if (!request_region(base, 8, iface->adapter.name)) { - printk(KERN_ERR NAME ": can't allocate io 0x%lx-0x%lx\n", - base, base + 8 - 1); + pr_err("can't allocate io 0x%lx-0x%lx\n", base, base + 8 - 1); goto errout_free; } @@ -583,7 +581,7 @@ static __init void scx200_scan_isa(void) static int __init scx200_acb_init(void) { - pr_debug(NAME ": NatSemi SCx200 ACCESS.bus Driver\n"); + pr_debug("NatSemi SCx200 ACCESS.bus Driver\n"); /* First scan for ISA-based devices */ scx200_scan_isa(); /* XXX: should we care about errors? */ diff --git a/drivers/i2c/busses/scx200_i2c.c b/drivers/i2c/busses/scx200_i2c.c index 7ee0d502cea..ae1258b95d6 100644 --- a/drivers/i2c/busses/scx200_i2c.c +++ b/drivers/i2c/busses/scx200_i2c.c @@ -21,6 +21,8 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/module.h> #include <linux/errno.h> #include <linux/kernel.h> @@ -31,8 +33,6 @@ #include <linux/scx200_gpio.h> -#define NAME "scx200_i2c" - MODULE_AUTHOR("Christer Weinigel <wingel@nano-system.com>"); MODULE_DESCRIPTION("NatSemi SCx200 I2C Driver"); MODULE_LICENSE("GPL"); @@ -88,17 +88,17 @@ static struct i2c_adapter scx200_i2c_ops = { static int scx200_i2c_init(void) { - pr_debug(NAME ": NatSemi SCx200 I2C Driver\n"); + pr_debug("NatSemi SCx200 I2C Driver\n"); if (!scx200_gpio_present()) { - printk(KERN_ERR NAME ": no SCx200 gpio pins available\n"); + pr_err("no SCx200 gpio pins available\n"); return -ENODEV; } - pr_debug(NAME ": SCL=GPIO%02u, SDA=GPIO%02u\n", scl, sda); + pr_debug("SCL=GPIO%02u, SDA=GPIO%02u\n", scl, sda); if (scl == -1 || sda == -1 || scl == sda) { - printk(KERN_ERR NAME ": scl and sda must be specified\n"); + pr_err("scl and sda must be specified\n"); return -EINVAL; } @@ -107,8 +107,7 @@ static int scx200_i2c_init(void) scx200_gpio_configure(sda, ~2, 5); if (i2c_bit_add_bus(&scx200_i2c_ops) < 0) { - printk(KERN_ERR NAME ": adapter %s registration failed\n", - scx200_i2c_ops.name); + pr_err("adapter %s registration failed\n", scx200_i2c_ops.name); return -ENODEV; } |