diff options
Diffstat (limited to 'drivers/i2c/busses')
40 files changed, 190 insertions, 164 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index 87ab0568bb0..bceafbfa726 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -475,6 +475,26 @@ config I2C_PASEMI help Supports the PA Semi PWRficient on-chip SMBus interfaces. +config I2C_PCA_PLATFORM + tristate "PCA9564/PCA9665 as platform device" + select I2C_ALGOPCA + default n + help + This driver supports a memory mapped Philips PCA9564/PCA9665 + parallel bus to I2C bus controller. + + This driver can also be built as a module. If so, the module + will be called i2c-pca-platform. + +config I2C_PMCMSP + tristate "PMC MSP I2C TWI Controller" + depends on PMC_MSP + help + This driver supports the PMC TWI controller on MSP devices. + + This driver can also be built as module. If so, the module + will be called i2c-pmcmsp. + config I2C_PNX tristate "I2C bus support for Philips PNX targets" depends on ARCH_PNX4008 @@ -711,26 +731,6 @@ config I2C_PCA_ISA delays when I2C/SMBus chip drivers are loaded (e.g. at boot time). If unsure, say N. -config I2C_PCA_PLATFORM - tristate "PCA9564/PCA9665 as platform device" - select I2C_ALGOPCA - default n - help - This driver supports a memory mapped Philips PCA9564/PCA9665 - parallel bus to I2C bus controller. - - This driver can also be built as a module. If so, the module - will be called i2c-pca-platform. - -config I2C_PMCMSP - tristate "PMC MSP I2C TWI Controller" - depends on PMC_MSP - help - This driver supports the PMC TWI controller on MSP devices. - - This driver can also be built as module. If so, the module - will be called i2c-pmcmsp. - config I2C_SIBYTE tristate "SiByte SMBus interface" depends on SIBYTE_SB1xxx_SOC diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile index 097236f631e..936880bd1dc 100644 --- a/drivers/i2c/busses/Makefile +++ b/drivers/i2c/busses/Makefile @@ -27,7 +27,7 @@ obj-$(CONFIG_I2C_VIAPRO) += i2c-viapro.o obj-$(CONFIG_I2C_HYDRA) += i2c-hydra.o obj-$(CONFIG_I2C_POWERMAC) += i2c-powermac.o -# Embebbed system I2C/SMBus host controller drivers +# Embedded system I2C/SMBus host controller drivers obj-$(CONFIG_I2C_AT91) += i2c-at91.o obj-$(CONFIG_I2C_AU1550) += i2c-au1550.o obj-$(CONFIG_I2C_BLACKFIN_TWI) += i2c-bfin-twi.o @@ -46,6 +46,8 @@ obj-$(CONFIG_I2C_NOMADIK) += i2c-nomadik.o obj-$(CONFIG_I2C_OCORES) += i2c-ocores.o obj-$(CONFIG_I2C_OMAP) += i2c-omap.o obj-$(CONFIG_I2C_PASEMI) += i2c-pasemi.o +obj-$(CONFIG_I2C_PCA_PLATFORM) += i2c-pca-platform.o +obj-$(CONFIG_I2C_PMCMSP) += i2c-pmcmsp.o obj-$(CONFIG_I2C_PNX) += i2c-pnx.o obj-$(CONFIG_I2C_PXA) += i2c-pxa.o obj-$(CONFIG_I2C_S3C2410) += i2c-s3c2410.o @@ -68,8 +70,6 @@ obj-$(CONFIG_I2C_TINY_USB) += i2c-tiny-usb.o obj-$(CONFIG_I2C_ACORN) += i2c-acorn.o obj-$(CONFIG_I2C_ELEKTOR) += i2c-elektor.o obj-$(CONFIG_I2C_PCA_ISA) += i2c-pca-isa.o -obj-$(CONFIG_I2C_PCA_PLATFORM) += i2c-pca-platform.o -obj-$(CONFIG_I2C_PMCMSP) += i2c-pmcmsp.o obj-$(CONFIG_I2C_SIBYTE) += i2c-sibyte.o obj-$(CONFIG_I2C_STUB) += i2c-stub.o obj-$(CONFIG_SCx200_ACB) += scx200_acb.o diff --git a/drivers/i2c/busses/i2c-ali1535.c b/drivers/i2c/busses/i2c-ali1535.c index bd8f1e4d9e6..906a3ca50db 100644 --- a/drivers/i2c/busses/i2c-ali1535.c +++ b/drivers/i2c/busses/i2c-ali1535.c @@ -60,7 +60,7 @@ #include <linux/i2c.h> #include <linux/init.h> #include <linux/acpi.h> -#include <asm/io.h> +#include <linux/io.h> /* ALI1535 SMBus address offsets */ diff --git a/drivers/i2c/busses/i2c-ali15x3.c b/drivers/i2c/busses/i2c-ali15x3.c index 659f63f5e4a..b14f6d68221 100644 --- a/drivers/i2c/busses/i2c-ali15x3.c +++ b/drivers/i2c/busses/i2c-ali15x3.c @@ -67,7 +67,7 @@ #include <linux/i2c.h> #include <linux/init.h> #include <linux/acpi.h> -#include <asm/io.h> +#include <linux/io.h> /* ALI15X3 SMBus address offsets */ #define SMBHSTSTS (0 + ali15x3_smba) diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c index c5a9fa488e7..03bcd07c469 100644 --- a/drivers/i2c/busses/i2c-amd756.c +++ b/drivers/i2c/busses/i2c-amd756.c @@ -43,7 +43,7 @@ #include <linux/i2c.h> #include <linux/init.h> #include <linux/acpi.h> -#include <asm/io.h> +#include <linux/io.h> /* AMD756 SMBus address offsets */ #define SMB_ADDR_OFFSET 0xE0 diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c index 2fbef27b6cd..af1e5e254b7 100644 --- a/drivers/i2c/busses/i2c-amd8111.c +++ b/drivers/i2c/busses/i2c-amd8111.c @@ -18,7 +18,7 @@ #include <linux/delay.h> #include <linux/acpi.h> #include <linux/slab.h> -#include <asm/io.h> +#include <linux/io.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR ("Vojtech Pavlik <vojtech@suse.cz>"); diff --git a/drivers/i2c/busses/i2c-at91.c b/drivers/i2c/busses/i2c-at91.c index 06e1ecb4919..305c07504f7 100644 --- a/drivers/i2c/busses/i2c-at91.c +++ b/drivers/i2c/busses/i2c-at91.c @@ -23,8 +23,7 @@ #include <linux/init.h> #include <linux/clk.h> #include <linux/platform_device.h> - -#include <asm/io.h> +#include <linux/io.h> #include <mach/at91_twi.h> #include <mach/board.h> diff --git a/drivers/i2c/busses/i2c-cpm.c b/drivers/i2c/busses/i2c-cpm.c index 16948db3897..e591de1bc70 100644 --- a/drivers/i2c/busses/i2c-cpm.c +++ b/drivers/i2c/busses/i2c-cpm.c @@ -440,7 +440,7 @@ static int __devinit cpm_i2c_setup(struct cpm_i2c *cpm) init_waitqueue_head(&cpm->i2c_wait); - cpm->irq = of_irq_to_resource(ofdev->node, 0, NULL); + cpm->irq = of_irq_to_resource(ofdev->dev.of_node, 0, NULL); if (!cpm->irq) return -EINVAL; @@ -451,13 +451,13 @@ static int __devinit cpm_i2c_setup(struct cpm_i2c *cpm) return ret; /* I2C parameter RAM */ - i2c_base = of_iomap(ofdev->node, 1); + i2c_base = of_iomap(ofdev->dev.of_node, 1); if (i2c_base == NULL) { ret = -EINVAL; goto out_irq; } - if (of_device_is_compatible(ofdev->node, "fsl,cpm1-i2c")) { + if (of_device_is_compatible(ofdev->dev.of_node, "fsl,cpm1-i2c")) { /* Check for and use a microcode relocation patch. */ cpm->i2c_ram = i2c_base; @@ -474,7 +474,7 @@ static int __devinit cpm_i2c_setup(struct cpm_i2c *cpm) cpm->version = 1; - } else if (of_device_is_compatible(ofdev->node, "fsl,cpm2-i2c")) { + } else if (of_device_is_compatible(ofdev->dev.of_node, "fsl,cpm2-i2c")) { cpm->i2c_addr = cpm_muram_alloc(sizeof(struct i2c_ram), 64); cpm->i2c_ram = cpm_muram_addr(cpm->i2c_addr); out_be16(i2c_base, cpm->i2c_addr); @@ -489,24 +489,24 @@ static int __devinit cpm_i2c_setup(struct cpm_i2c *cpm) } /* I2C control/status registers */ - cpm->i2c_reg = of_iomap(ofdev->node, 0); + cpm->i2c_reg = of_iomap(ofdev->dev.of_node, 0); if (cpm->i2c_reg == NULL) { ret = -EINVAL; goto out_ram; } - data = of_get_property(ofdev->node, "fsl,cpm-command", &len); + data = of_get_property(ofdev->dev.of_node, "fsl,cpm-command", &len); if (!data || len != 4) { ret = -EINVAL; goto out_reg; } cpm->cp_command = *data; - data = of_get_property(ofdev->node, "linux,i2c-class", &len); + data = of_get_property(ofdev->dev.of_node, "linux,i2c-class", &len); if (data && len == 4) cpm->adap.class = *data; - data = of_get_property(ofdev->node, "clock-frequency", &len); + data = of_get_property(ofdev->dev.of_node, "clock-frequency", &len); if (data && len == 4) cpm->freq = *data; else @@ -652,6 +652,7 @@ static int __devinit cpm_i2c_probe(struct of_device *ofdev, cpm->adap = cpm_ops; i2c_set_adapdata(&cpm->adap, cpm); cpm->adap.dev.parent = &ofdev->dev; + cpm->adap.dev.of_node = of_node_get(ofdev->dev.of_node); result = cpm_i2c_setup(cpm); if (result) { @@ -661,7 +662,7 @@ static int __devinit cpm_i2c_probe(struct of_device *ofdev, /* register new adapter to i2c module... */ - data = of_get_property(ofdev->node, "linux,i2c-index", &len); + data = of_get_property(ofdev->dev.of_node, "linux,i2c-index", &len); if (data && len == 4) { cpm->adap.nr = *data; result = i2c_add_numbered_adapter(&cpm->adap); @@ -676,11 +677,6 @@ static int __devinit cpm_i2c_probe(struct of_device *ofdev, dev_dbg(&ofdev->dev, "hw routines for %s registered.\n", cpm->adap.name); - /* - * register OF I2C devices - */ - of_register_i2c_devices(&cpm->adap, ofdev->node); - return 0; out_shut: cpm_i2c_shutdown(cpm); @@ -718,13 +714,13 @@ static const struct of_device_id cpm_i2c_match[] = { MODULE_DEVICE_TABLE(of, cpm_i2c_match); static struct of_platform_driver cpm_i2c_driver = { - .match_table = cpm_i2c_match, .probe = cpm_i2c_probe, .remove = __devexit_p(cpm_i2c_remove), - .driver = { - .name = "fsl-i2c-cpm", - .owner = THIS_MODULE, - } + .driver = { + .name = "fsl-i2c-cpm", + .owner = THIS_MODULE, + .of_match_table = cpm_i2c_match, + }, }; static int __init cpm_i2c_init(void) diff --git a/drivers/i2c/busses/i2c-elektor.c b/drivers/i2c/busses/i2c-elektor.c index 612255614a6..e5b1a3bf5b8 100644 --- a/drivers/i2c/busses/i2c-elektor.c +++ b/drivers/i2c/busses/i2c-elektor.c @@ -37,8 +37,8 @@ #include <linux/isa.h> #include <linux/i2c.h> #include <linux/i2c-algo-pcf.h> +#include <linux/io.h> -#include <asm/io.h> #include <asm/irq.h> #include "../algos/i2c-algo-pcf.h" diff --git a/drivers/i2c/busses/i2c-gpio.c b/drivers/i2c/busses/i2c-gpio.c index c21077d248a..d9aa9a649e3 100644 --- a/drivers/i2c/busses/i2c-gpio.c +++ b/drivers/i2c/busses/i2c-gpio.c @@ -211,7 +211,7 @@ static int __init i2c_gpio_init(void) return ret; } -module_init(i2c_gpio_init); +subsys_initcall(i2c_gpio_init); static void __exit i2c_gpio_exit(void) { diff --git a/drivers/i2c/busses/i2c-hydra.c b/drivers/i2c/busses/i2c-hydra.c index c767295ad1f..9ff1695d845 100644 --- a/drivers/i2c/busses/i2c-hydra.c +++ b/drivers/i2c/busses/i2c-hydra.c @@ -28,7 +28,7 @@ #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> #include <linux/init.h> -#include <asm/io.h> +#include <linux/io.h> #include <asm/hydra.h> diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 299b918455a..c60081169cc 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -138,6 +138,17 @@ static struct pci_dev *I801_dev; #define FEATURE_I2C_BLOCK_READ (1 << 3) static unsigned int i801_features; +static const char *i801_feature_names[] = { + "SMBus PEC", + "Block buffer", + "Block process call", + "I2C block read", +}; + +static unsigned int disable_features; +module_param(disable_features, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(disable_features, "Disable selected driver features"); + /* Make sure the SMBus host is ready to start transmitting. Return 0 if it is, -EBUSY if it is not. */ static int i801_check_pre(void) @@ -341,9 +352,8 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data, do { msleep(1); status = inb_p(SMBHSTSTS); - } - while ((!(status & SMBHSTSTS_BYTE_DONE)) - && (timeout++ < MAX_TIMEOUT)); + } while ((!(status & SMBHSTSTS_BYTE_DONE)) + && (timeout++ < MAX_TIMEOUT)); result = i801_check_post(status, timeout > MAX_TIMEOUT); if (result < 0) @@ -440,9 +450,9 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write, } /* Return negative errno on error. */ -static s32 i801_access(struct i2c_adapter * adap, u16 addr, +static s32 i801_access(struct i2c_adapter *adap, u16 addr, unsigned short flags, char read_write, u8 command, - int size, union i2c_smbus_data * data) + int size, union i2c_smbus_data *data) { int hwpec; int block = 0; @@ -511,7 +521,7 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, else outb_p(inb_p(SMBAUXCTL) & (~SMBAUXCTL_CRC), SMBAUXCTL); - if(block) + if (block) ret = i801_block_transaction(data, read_write, size, hwpec); else ret = i801_transaction(xact | ENABLE_INT9); @@ -523,9 +533,9 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, outb_p(inb_p(SMBAUXCTL) & ~(SMBAUXCTL_CRC | SMBAUXCTL_E32B), SMBAUXCTL); - if(block) + if (block) return ret; - if(ret) + if (ret) return ret; if ((read_write == I2C_SMBUS_WRITE) || (xact == I801_QUICK)) return 0; @@ -585,7 +595,7 @@ static const struct pci_device_id i801_ids[] = { { 0, } }; -MODULE_DEVICE_TABLE (pci, i801_ids); +MODULE_DEVICE_TABLE(pci, i801_ids); #if defined CONFIG_INPUT_APANEL || defined CONFIG_INPUT_APANEL_MODULE static unsigned char apanel_addr; @@ -645,7 +655,7 @@ static void __devinit dmi_check_onboard_device(u8 type, const char *name, /* & ~0x80, ignore enabled/disabled bit */ if ((type & ~0x80) != dmi_devices[i].type) continue; - if (strcmp(name, dmi_devices[i].name)) + if (strcasecmp(name, dmi_devices[i].name)) continue; memset(&info, 0, sizeof(struct i2c_board_info)); @@ -689,37 +699,37 @@ static void __devinit dmi_check_onboard_devices(const struct dmi_header *dm, } #endif -static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id *id) +static int __devinit i801_probe(struct pci_dev *dev, + const struct pci_device_id *id) { unsigned char temp; - int err; -#if defined CONFIG_SENSORS_FSCHMD || defined CONFIG_SENSORS_FSCHMD_MODULE - const char *vendor; -#endif + int err, i; I801_dev = dev; i801_features = 0; switch (dev->device) { - case PCI_DEVICE_ID_INTEL_82801EB_3: - case PCI_DEVICE_ID_INTEL_ESB_4: - case PCI_DEVICE_ID_INTEL_ICH6_16: - case PCI_DEVICE_ID_INTEL_ICH7_17: - case PCI_DEVICE_ID_INTEL_ESB2_17: - case PCI_DEVICE_ID_INTEL_ICH8_5: - case PCI_DEVICE_ID_INTEL_ICH9_6: - case PCI_DEVICE_ID_INTEL_TOLAPAI_1: - 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: + default: i801_features |= FEATURE_I2C_BLOCK_READ; /* fall through */ case PCI_DEVICE_ID_INTEL_82801DB_3: i801_features |= FEATURE_SMBUS_PEC; i801_features |= FEATURE_BLOCK_BUFFER; + /* fall through */ + case PCI_DEVICE_ID_INTEL_82801CA_3: + case PCI_DEVICE_ID_INTEL_82801BA_2: + case PCI_DEVICE_ID_INTEL_82801AB_3: + case PCI_DEVICE_ID_INTEL_82801AA_3: break; } + /* Disable features on user request */ + for (i = 0; i < ARRAY_SIZE(i801_feature_names); i++) { + if (i801_features & disable_features & (1 << i)) + dev_notice(&dev->dev, "%s disabled by user\n", + i801_feature_names[i]); + } + i801_features &= ~disable_features; + err = pci_enable_device(dev); if (err) { dev_err(&dev->dev, "Failed to enable SMBus PCI device (%d)\n", @@ -795,8 +805,7 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id } #endif #if defined CONFIG_SENSORS_FSCHMD || defined CONFIG_SENSORS_FSCHMD_MODULE - vendor = dmi_get_system_info(DMI_BOARD_VENDOR); - if (vendor && !strcmp(vendor, "FUJITSU SIEMENS")) + if (dmi_name_in_vendors("FUJITSU")) dmi_walk(dmi_check_onboard_devices, &i801_adapter); #endif diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c index 2bef534cbff..1168d61418c 100644 --- a/drivers/i2c/busses/i2c-ibm_iic.c +++ b/drivers/i2c/busses/i2c-ibm_iic.c @@ -39,7 +39,7 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <asm/irq.h> -#include <asm/io.h> +#include <linux/io.h> #include <linux/i2c.h> #include <linux/i2c-id.h> #include <linux/of_platform.h> @@ -664,7 +664,7 @@ static inline u8 iic_clckdiv(unsigned int opb) static int __devinit iic_request_irq(struct of_device *ofdev, struct ibm_iic_private *dev) { - struct device_node *np = ofdev->node; + struct device_node *np = ofdev->dev.of_node; int irq; if (iic_force_poll) @@ -695,7 +695,7 @@ static int __devinit iic_request_irq(struct of_device *ofdev, static int __devinit iic_probe(struct of_device *ofdev, const struct of_device_id *match) { - struct device_node *np = ofdev->node; + struct device_node *np = ofdev->dev.of_node; struct ibm_iic_private *dev; struct i2c_adapter *adap; const u32 *freq; @@ -745,6 +745,7 @@ static int __devinit iic_probe(struct of_device *ofdev, /* Register it with i2c layer */ adap = &dev->adap; adap->dev.parent = &ofdev->dev; + adap->dev.of_node = of_node_get(np); strlcpy(adap->name, "IBM IIC", sizeof(adap->name)); i2c_set_adapdata(adap, dev); adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD; @@ -760,9 +761,6 @@ static int __devinit iic_probe(struct of_device *ofdev, dev_info(&ofdev->dev, "using %s mode\n", dev->fast_mode ? "fast (400 kHz)" : "standard (100 kHz)"); - /* Now register all the child nodes */ - of_register_i2c_devices(adap, np); - return 0; error_cleanup: @@ -807,8 +805,11 @@ static const struct of_device_id ibm_iic_match[] = { }; static struct of_platform_driver ibm_iic_driver = { - .name = "ibm-iic", - .match_table = ibm_iic_match, + .driver = { + .name = "ibm-iic", + .owner = THIS_MODULE, + .of_match_table = ibm_iic_match, + }, .probe = iic_probe, .remove = __devexit_p(iic_remove), }; diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c index 5901707fc66..112c61f7b8c 100644 --- a/drivers/i2c/busses/i2c-iop3xx.c +++ b/drivers/i2c/busses/i2c-iop3xx.c @@ -38,8 +38,7 @@ #include <linux/errno.h> #include <linux/platform_device.h> #include <linux/i2c.h> - -#include <asm/io.h> +#include <linux/io.h> #include "i2c-iop3xx.h" diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index e86cef300c7..6545d1c99b6 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -63,6 +63,7 @@ struct mpc_i2c { wait_queue_head_t queue; struct i2c_adapter adap; int irq; + u32 real_clk; }; struct mpc_i2c_divider { @@ -96,20 +97,23 @@ static irqreturn_t mpc_i2c_isr(int irq, void *dev_id) /* Sometimes 9th clock pulse isn't generated, and slave doesn't release * the bus, because it wants to send ACK. * Following sequence of enabling/disabling and sending start/stop generates - * the pulse, so it's all OK. + * the 9 pulses, so it's all OK. */ static void mpc_i2c_fixup(struct mpc_i2c *i2c) { - writeccr(i2c, 0); - udelay(30); - writeccr(i2c, CCR_MEN); - udelay(30); - writeccr(i2c, CCR_MSTA | CCR_MTX); - udelay(30); - writeccr(i2c, CCR_MSTA | CCR_MTX | CCR_MEN); - udelay(30); - writeccr(i2c, CCR_MEN); - udelay(30); + int k; + u32 delay_val = 1000000 / i2c->real_clk + 1; + + if (delay_val < 2) + delay_val = 2; + + for (k = 9; k; k--) { + writeccr(i2c, 0); + writeccr(i2c, CCR_MSTA | CCR_MTX | CCR_MEN); + udelay(delay_val); + writeccr(i2c, CCR_MEN); + udelay(delay_val << 1); + } } static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing) @@ -190,15 +194,18 @@ static const struct mpc_i2c_divider mpc_i2c_dividers_52xx[] __devinitconst = { }; static int __devinit mpc_i2c_get_fdr_52xx(struct device_node *node, u32 clock, - int prescaler) + int prescaler, u32 *real_clk) { const struct mpc_i2c_divider *div = NULL; unsigned int pvr = mfspr(SPRN_PVR); u32 divider; int i; - if (clock == MPC_I2C_CLOCK_LEGACY) + if (clock == MPC_I2C_CLOCK_LEGACY) { + /* see below - default fdr = 0x3f -> div = 2048 */ + *real_clk = mpc5xxx_get_bus_frequency(node) / 2048; return -EINVAL; + } /* Determine divider value */ divider = mpc5xxx_get_bus_frequency(node) / clock; @@ -216,7 +223,8 @@ static int __devinit mpc_i2c_get_fdr_52xx(struct device_node *node, u32 clock, break; } - return div ? (int)div->fdr : -EINVAL; + *real_clk = mpc5xxx_get_bus_frequency(node) / div->divider; + return (int)div->fdr; } static void __devinit mpc_i2c_setup_52xx(struct device_node *node, @@ -231,13 +239,14 @@ static void __devinit mpc_i2c_setup_52xx(struct device_node *node, return; } - ret = mpc_i2c_get_fdr_52xx(node, clock, prescaler); + ret = mpc_i2c_get_fdr_52xx(node, clock, prescaler, &i2c->real_clk); fdr = (ret >= 0) ? ret : 0x3f; /* backward compatibility */ writeb(fdr & 0xff, i2c->base + MPC_I2C_FDR); if (ret >= 0) - dev_info(i2c->dev, "clock %d Hz (fdr=%d)\n", clock, fdr); + dev_info(i2c->dev, "clock %u Hz (fdr=%d)\n", i2c->real_clk, + fdr); } #else /* !(CONFIG_PPC_MPC52xx || CONFIG_PPC_MPC512x) */ static void __devinit mpc_i2c_setup_52xx(struct device_node *node, @@ -334,14 +343,17 @@ static u32 __devinit mpc_i2c_get_sec_cfg_8xxx(void) } static int __devinit mpc_i2c_get_fdr_8xxx(struct device_node *node, u32 clock, - u32 prescaler) + u32 prescaler, u32 *real_clk) { const struct mpc_i2c_divider *div = NULL; u32 divider; int i; - if (clock == MPC_I2C_CLOCK_LEGACY) + if (clock == MPC_I2C_CLOCK_LEGACY) { + /* see below - default fdr = 0x1031 -> div = 16 * 3072 */ + *real_clk = fsl_get_sys_freq() / prescaler / (16 * 3072); return -EINVAL; + } /* Determine proper divider value */ if (of_device_is_compatible(node, "fsl,mpc8544-i2c")) @@ -364,6 +376,7 @@ static int __devinit mpc_i2c_get_fdr_8xxx(struct device_node *node, u32 clock, break; } + *real_clk = fsl_get_sys_freq() / prescaler / div->divider; return div ? (int)div->fdr : -EINVAL; } @@ -380,7 +393,7 @@ static void __devinit mpc_i2c_setup_8xxx(struct device_node *node, return; } - ret = mpc_i2c_get_fdr_8xxx(node, clock, prescaler); + ret = mpc_i2c_get_fdr_8xxx(node, clock, prescaler, &i2c->real_clk); fdr = (ret >= 0) ? ret : 0x1031; /* backward compatibility */ writeb(fdr & 0xff, i2c->base + MPC_I2C_FDR); @@ -388,7 +401,7 @@ static void __devinit mpc_i2c_setup_8xxx(struct device_node *node, if (ret >= 0) dev_info(i2c->dev, "clock %d Hz (dfsrr=%d fdr=%d)\n", - clock, fdr >> 8, fdr & 0xff); + i2c->real_clk, fdr >> 8, fdr & 0xff); } #else /* !CONFIG_FSL_SOC */ @@ -500,10 +513,14 @@ static int mpc_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) return -EINTR; } if (time_after(jiffies, orig_jiffies + HZ)) { + u8 status = readb(i2c->base + MPC_I2C_SR); + dev_dbg(i2c->dev, "timeout\n"); - if (readb(i2c->base + MPC_I2C_SR) == - (CSR_MCF | CSR_MBB | CSR_RXAK)) + if ((status & (CSR_MCF | CSR_MBB | CSR_RXAK)) != 0) { + writeb(status & ~CSR_MAL, + i2c->base + MPC_I2C_SR); mpc_i2c_fixup(i2c); + } return -EIO; } schedule(); @@ -560,14 +577,14 @@ static int __devinit fsl_i2c_probe(struct of_device *op, init_waitqueue_head(&i2c->queue); - i2c->base = of_iomap(op->node, 0); + i2c->base = of_iomap(op->dev.of_node, 0); if (!i2c->base) { dev_err(i2c->dev, "failed to map controller\n"); result = -ENOMEM; goto fail_map; } - i2c->irq = irq_of_parse_and_map(op->node, 0); + i2c->irq = irq_of_parse_and_map(op->dev.of_node, 0); if (i2c->irq) { /* no i2c->irq implies polling */ result = request_irq(i2c->irq, mpc_i2c_isr, IRQF_SHARED, "i2c-mpc", i2c); @@ -577,35 +594,44 @@ static int __devinit fsl_i2c_probe(struct of_device *op, } } - if (of_get_property(op->node, "fsl,preserve-clocking", NULL)) { + if (of_get_property(op->dev.of_node, "fsl,preserve-clocking", NULL)) { clock = MPC_I2C_CLOCK_PRESERVE; } else { - prop = of_get_property(op->node, "clock-frequency", &plen); + prop = of_get_property(op->dev.of_node, "clock-frequency", + &plen); if (prop && plen == sizeof(u32)) clock = *prop; } if (match->data) { struct mpc_i2c_data *data = match->data; - data->setup(op->node, i2c, clock, data->prescaler); + data->setup(op->dev.of_node, i2c, clock, data->prescaler); } else { /* Backwards compatibility */ - if (of_get_property(op->node, "dfsrr", NULL)) - mpc_i2c_setup_8xxx(op->node, i2c, clock, 0); + if (of_get_property(op->dev.of_node, "dfsrr", NULL)) + mpc_i2c_setup_8xxx(op->dev.of_node, i2c, clock, 0); + } + + prop = of_get_property(op->dev.of_node, "fsl,timeout", &plen); + if (prop && plen == sizeof(u32)) { + mpc_ops.timeout = *prop * HZ / 1000000; + if (mpc_ops.timeout < 5) + mpc_ops.timeout = 5; } + dev_info(i2c->dev, "timeout %u us\n", mpc_ops.timeout * 1000000 / HZ); dev_set_drvdata(&op->dev, i2c); i2c->adap = mpc_ops; i2c_set_adapdata(&i2c->adap, i2c); i2c->adap.dev.parent = &op->dev; + i2c->adap.dev.of_node = of_node_get(op->dev.of_node); result = i2c_add_adapter(&i2c->adap); if (result < 0) { dev_err(i2c->dev, "failed to add adapter\n"); goto fail_add; } - of_register_i2c_devices(&i2c->adap, op->node); return result; @@ -674,12 +700,12 @@ MODULE_DEVICE_TABLE(of, mpc_i2c_of_match); /* Structure for a device driver */ static struct of_platform_driver mpc_i2c_driver = { - .match_table = mpc_i2c_of_match, .probe = fsl_i2c_probe, .remove = __devexit_p(fsl_i2c_remove), - .driver = { - .owner = THIS_MODULE, - .name = DRV_NAME, + .driver = { + .owner = THIS_MODULE, + .name = DRV_NAME, + .of_match_table = mpc_i2c_of_match, }, }; diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c index 3623a449908..16242063144 100644 --- a/drivers/i2c/busses/i2c-mv64xxx.c +++ b/drivers/i2c/busses/i2c-mv64xxx.c @@ -17,8 +17,7 @@ #include <linux/interrupt.h> #include <linux/mv643xx_i2c.h> #include <linux/platform_device.h> - -#include <asm/io.h> +#include <linux/io.h> /* Register defines */ #define MV64XXX_I2C_REG_SLAVE_ADDR 0x00 diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index 4a48dd4ef78..a605a5029cf 100644 --- a/drivers/i2c/busses/i2c-nforce2.c +++ b/drivers/i2c/busses/i2c-nforce2.c @@ -57,7 +57,7 @@ #include <linux/dmi.h> #include <linux/acpi.h> #include <linux/slab.h> -#include <asm/io.h> +#include <linux/io.h> MODULE_LICENSE("GPL"); MODULE_AUTHOR ("Hans-Frieder Vogt <hfvogt@gmx.net>"); @@ -404,10 +404,9 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_ /* SMBus adapter 1 */ res1 = nforce2_probe_smb(dev, 4, NFORCE_PCI_SMB1, &smbuses[0], "SMB1"); - if (res1 < 0) { - dev_err(&dev->dev, "Error probing SMB1.\n"); + if (res1 < 0) smbuses[0].base = 0; /* to have a check value */ - } + /* SMBus adapter 2 */ if (dmi_check_system(nforce2_dmi_blacklist2)) { dev_err(&dev->dev, "Disabling SMB2 for safety reasons.\n"); @@ -416,11 +415,10 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_ } else { res2 = nforce2_probe_smb(dev, 5, NFORCE_PCI_SMB2, &smbuses[1], "SMB2"); - if (res2 < 0) { - dev_err(&dev->dev, "Error probing SMB2.\n"); + if (res2 < 0) smbuses[1].base = 0; /* to have a check value */ - } } + if ((res1 < 0) && (res2 < 0)) { /* we did not find even one of the SMBuses, so we give up */ kfree(smbuses); diff --git a/drivers/i2c/busses/i2c-ocores.c b/drivers/i2c/busses/i2c-ocores.c index b4ed4ca802e..0070371b29f 100644 --- a/drivers/i2c/busses/i2c-ocores.c +++ b/drivers/i2c/busses/i2c-ocores.c @@ -19,7 +19,7 @@ #include <linux/wait.h> #include <linux/i2c-ocores.h> #include <linux/slab.h> -#include <asm/io.h> +#include <linux/io.h> struct ocores_i2c { void __iomem *base; diff --git a/drivers/i2c/busses/i2c-parport-light.c b/drivers/i2c/busses/i2c-parport-light.c index 5f41ec0f72d..fc5fbd1012c 100644 --- a/drivers/i2c/busses/i2c-parport-light.c +++ b/drivers/i2c/busses/i2c-parport-light.c @@ -33,7 +33,7 @@ #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> #include <linux/i2c-smbus.h> -#include <asm/io.h> +#include <linux/io.h> #include "i2c-parport.h" #define DEFAULT_BASE 0x378 diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c index 846583ed476..0eb1515541e 100644 --- a/drivers/i2c/busses/i2c-parport.c +++ b/drivers/i2c/busses/i2c-parport.c @@ -137,7 +137,7 @@ static int parport_getsda(void *data) copied. The attaching code will set getscl to NULL for adapters that cannot read SCL back, and will also make the data field point to the parallel port structure. */ -static struct i2c_algo_bit_data parport_algo_data = { +static const struct i2c_algo_bit_data parport_algo_data = { .setsda = parport_setsda, .setscl = parport_setscl, .getsda = parport_getsda, diff --git a/drivers/i2c/busses/i2c-pasemi.c b/drivers/i2c/busses/i2c-pasemi.c index d3d4a4b43a1..4174101660c 100644 --- a/drivers/i2c/busses/i2c-pasemi.c +++ b/drivers/i2c/busses/i2c-pasemi.c @@ -25,7 +25,7 @@ #include <linux/i2c.h> #include <linux/delay.h> #include <linux/slab.h> -#include <asm/io.h> +#include <linux/io.h> static struct pci_driver pasemi_smb_driver; diff --git a/drivers/i2c/busses/i2c-pca-isa.c b/drivers/i2c/busses/i2c-pca-isa.c index f7346a9bd95..bbd77603a41 100644 --- a/drivers/i2c/busses/i2c-pca-isa.c +++ b/drivers/i2c/busses/i2c-pca-isa.c @@ -30,8 +30,8 @@ #include <linux/isa.h> #include <linux/i2c.h> #include <linux/i2c-algo-pca.h> +#include <linux/io.h> -#include <asm/io.h> #include <asm/irq.h> #define DRIVER "i2c-pca-isa" diff --git a/drivers/i2c/busses/i2c-pca-platform.c b/drivers/i2c/busses/i2c-pca-platform.c index 5b2213df5ed..ef5c78487eb 100644 --- a/drivers/i2c/busses/i2c-pca-platform.c +++ b/drivers/i2c/busses/i2c-pca-platform.c @@ -23,9 +23,9 @@ #include <linux/i2c-algo-pca.h> #include <linux/i2c-pca-platform.h> #include <linux/gpio.h> +#include <linux/io.h> #include <asm/irq.h> -#include <asm/io.h> struct i2c_pca_pf_data { void __iomem *reg_base; diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index ee9da6fcf69..6d14ac2e3c4 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -39,7 +39,7 @@ #include <linux/init.h> #include <linux/dmi.h> #include <linux/acpi.h> -#include <asm/io.h> +#include <linux/io.h> /* PIIX4 SMBus address offsets */ diff --git a/drivers/i2c/busses/i2c-pmcmsp.c b/drivers/i2c/busses/i2c-pmcmsp.c index 7b57d5f267e..dfa7ae9c1b8 100644 --- a/drivers/i2c/busses/i2c-pmcmsp.c +++ b/drivers/i2c/busses/i2c-pmcmsp.c @@ -33,7 +33,7 @@ #include <linux/completion.h> #include <linux/mutex.h> #include <linux/delay.h> -#include <asm/io.h> +#include <linux/io.h> #define DRV_NAME "pmcmsptwi" diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c index fbde6f61405..020ff23d762 100644 --- a/drivers/i2c/busses/i2c-pxa.c +++ b/drivers/i2c/busses/i2c-pxa.c @@ -34,9 +34,9 @@ #include <linux/err.h> #include <linux/clk.h> #include <linux/slab.h> +#include <linux/io.h> #include <asm/irq.h> -#include <asm/io.h> #include <plat/i2c.h> /* diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index ec3256cce91..72902e0bbfa 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -35,9 +35,9 @@ #include <linux/clk.h> #include <linux/cpufreq.h> #include <linux/slab.h> +#include <linux/io.h> #include <asm/irq.h> -#include <asm/io.h> #include <plat/regs-iic.h> #include <plat/iic.h> diff --git a/drivers/i2c/busses/i2c-s6000.c b/drivers/i2c/busses/i2c-s6000.c index c91359f4965..cadc0216e02 100644 --- a/drivers/i2c/busses/i2c-s6000.c +++ b/drivers/i2c/busses/i2c-s6000.c @@ -36,8 +36,8 @@ #include <linux/completion.h> #include <linux/interrupt.h> #include <linux/platform_device.h> +#include <linux/io.h> -#include <asm/io.h> #include "i2c-s6000.h" #define DRV_NAME "i2c-s6000" diff --git a/drivers/i2c/busses/i2c-sh7760.c b/drivers/i2c/busses/i2c-sh7760.c index b9680f50f54..4f93da31d3a 100644 --- a/drivers/i2c/busses/i2c-sh7760.c +++ b/drivers/i2c/busses/i2c-sh7760.c @@ -16,10 +16,10 @@ #include <linux/ioport.h> #include <linux/platform_device.h> #include <linux/slab.h> +#include <linux/io.h> #include <asm/clock.h> #include <asm/i2c-sh7760.h> -#include <asm/io.h> /* register offsets */ #define I2CSCR 0x0 /* slave ctrl */ diff --git a/drivers/i2c/busses/i2c-sibyte.c b/drivers/i2c/busses/i2c-sibyte.c index 98b1ec48915..0fe505d7abe 100644 --- a/drivers/i2c/busses/i2c-sibyte.c +++ b/drivers/i2c/busses/i2c-sibyte.c @@ -22,7 +22,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/i2c.h> -#include <asm/io.h> +#include <linux/io.h> #include <asm/sibyte/sb1250_regs.h> #include <asm/sibyte/sb1250_smbus.h> @@ -94,7 +94,7 @@ static int smbus_xfer(struct i2c_adapter *i2c_adap, u16 addr, } break; default: - return -1; /* XXXKW better error code? */ + return -EOPNOTSUPP; } while (csr_in32(SMB_CSR(adap, R_SMB_STATUS)) & M_SMB_BUSY) @@ -104,7 +104,7 @@ static int smbus_xfer(struct i2c_adapter *i2c_adap, u16 addr, if (error & M_SMB_ERROR) { /* Clear error bit by writing a 1 */ csr_out32(M_SMB_ERROR, SMB_CSR(adap, R_SMB_STATUS)); - return -1; /* XXXKW better error code? */ + return (error & M_SMB_ERROR_TYPE) ? -EIO : -ENXIO; } if (data_bytes == 1) diff --git a/drivers/i2c/busses/i2c-simtec.c b/drivers/i2c/busses/i2c-simtec.c index 78b06107342..2fc08fbf67a 100644 --- a/drivers/i2c/busses/i2c-simtec.c +++ b/drivers/i2c/busses/i2c-simtec.c @@ -24,12 +24,11 @@ #include <linux/delay.h> #include <linux/platform_device.h> #include <linux/slab.h> +#include <linux/io.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> -#include <asm/io.h> - struct simtec_i2c_data { struct resource *ioarea; void __iomem *reg; diff --git a/drivers/i2c/busses/i2c-sis5595.c b/drivers/i2c/busses/i2c-sis5595.c index 55a71370c79..437586611d4 100644 --- a/drivers/i2c/busses/i2c-sis5595.c +++ b/drivers/i2c/busses/i2c-sis5595.c @@ -61,7 +61,7 @@ #include <linux/init.h> #include <linux/i2c.h> #include <linux/acpi.h> -#include <asm/io.h> +#include <linux/io.h> static int blacklist[] = { PCI_DEVICE_ID_SI_540, diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c index 2309c7f1bde..e6f539e26f6 100644 --- a/drivers/i2c/busses/i2c-sis630.c +++ b/drivers/i2c/busses/i2c-sis630.c @@ -53,7 +53,7 @@ #include <linux/init.h> #include <linux/i2c.h> #include <linux/acpi.h> -#include <asm/io.h> +#include <linux/io.h> /* SIS630 SMBus registers */ #define SMB_STS 0x80 /* status */ diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c index d43d8f8943d..86837f0c4cb 100644 --- a/drivers/i2c/busses/i2c-sis96x.c +++ b/drivers/i2c/busses/i2c-sis96x.c @@ -38,7 +38,7 @@ #include <linux/i2c.h> #include <linux/init.h> #include <linux/acpi.h> -#include <asm/io.h> +#include <linux/io.h> /* base address register in PCI config space */ #define SIS96x_BAR 0x04 diff --git a/drivers/i2c/busses/i2c-stub.c b/drivers/i2c/busses/i2c-stub.c index 0c770eabe85..b1b3447942c 100644 --- a/drivers/i2c/busses/i2c-stub.c +++ b/drivers/i2c/busses/i2c-stub.c @@ -29,13 +29,16 @@ #include <linux/i2c.h> #define MAX_CHIPS 10 +#define STUB_FUNC (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | \ + I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | \ + I2C_FUNC_SMBUS_I2C_BLOCK) static unsigned short chip_addr[MAX_CHIPS]; module_param_array(chip_addr, ushort, NULL, S_IRUGO); MODULE_PARM_DESC(chip_addr, "Chip addresses (up to 10, between 0x03 and 0x77)"); -static unsigned long functionality = ~0UL; +static unsigned long functionality = STUB_FUNC; module_param(functionality, ulong, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(functionality, "Override functionality bitfield"); @@ -156,9 +159,7 @@ static s32 stub_xfer(struct i2c_adapter * adap, u16 addr, unsigned short flags, static u32 stub_func(struct i2c_adapter *adapter) { - return (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | - I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | - I2C_FUNC_SMBUS_I2C_BLOCK) & functionality; + return STUB_FUNC & functionality; } static const struct i2c_algorithm smbus_algorithm = { diff --git a/drivers/i2c/busses/i2c-versatile.c b/drivers/i2c/busses/i2c-versatile.c index 5c473833d94..60556012312 100644 --- a/drivers/i2c/busses/i2c-versatile.c +++ b/drivers/i2c/busses/i2c-versatile.c @@ -15,8 +15,7 @@ #include <linux/init.h> #include <linux/platform_device.h> #include <linux/slab.h> - -#include <asm/io.h> +#include <linux/io.h> #define I2C_CONTROL 0x00 #define I2C_CONTROLS 0x00 diff --git a/drivers/i2c/busses/i2c-via.c b/drivers/i2c/busses/i2c-via.c index de78283bddb..7799fe5bda8 100644 --- a/drivers/i2c/busses/i2c-via.c +++ b/drivers/i2c/busses/i2c-via.c @@ -25,7 +25,7 @@ #include <linux/init.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> -#include <asm/io.h> +#include <linux/io.h> /* Power management registers */ #define PM_CFG_REVID 0x08 /* silicon revision code */ diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c index d57292e5dae..4c6fff5f330 100644 --- a/drivers/i2c/busses/i2c-viapro.c +++ b/drivers/i2c/busses/i2c-viapro.c @@ -51,7 +51,7 @@ #include <linux/i2c.h> #include <linux/init.h> #include <linux/acpi.h> -#include <asm/io.h> +#include <linux/io.h> static struct pci_dev *vt596_pdev; diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c index 684395b6f3e..4cb4bb00995 100644 --- a/drivers/i2c/busses/scx200_acb.c +++ b/drivers/i2c/busses/scx200_acb.c @@ -32,7 +32,7 @@ #include <linux/delay.h> #include <linux/mutex.h> #include <linux/slab.h> -#include <asm/io.h> +#include <linux/io.h> #include <linux/scx200.h> @@ -552,7 +552,7 @@ static int __init scx200_create_isa(const char *text, unsigned long base, * the name and the BAR where the I/O address resource is located. ISA * devices are flagged with a bar value of -1 */ -static struct pci_device_id scx200_pci[] = { +static const struct pci_device_id scx200_pci[] __initconst = { { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SCx200_BRIDGE), .driver_data = 0 }, { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SC1100_BRIDGE), diff --git a/drivers/i2c/busses/scx200_i2c.c b/drivers/i2c/busses/scx200_i2c.c index 42df0eca43d..7ee0d502cea 100644 --- a/drivers/i2c/busses/scx200_i2c.c +++ b/drivers/i2c/busses/scx200_i2c.c @@ -27,7 +27,7 @@ #include <linux/init.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> -#include <asm/io.h> +#include <linux/io.h> #include <linux/scx200_gpio.h> |