diff options
author | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-11 14:36:25 +0100 |
---|---|---|
committer | David Woodhouse <David.Woodhouse@intel.com> | 2008-07-11 14:36:25 +0100 |
commit | a8931ef380c92d121ae74ecfb03b2d63f72eea6f (patch) | |
tree | 980fb6b019e11e6cb1ece55b7faff184721a8053 /drivers/i2c/busses | |
parent | 90574d0a4d4b73308ae54a2a57a4f3f1fa98e984 (diff) | |
parent | e5a5816f7875207cb0a0a7032e39a4686c5e10a4 (diff) |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/i2c/busses')
-rw-r--r-- | drivers/i2c/busses/i2c-amd756.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-au1550.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-mpc.c | 16 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-nforce2.c | 28 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 47 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-s3c2410.c | 28 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-sibyte.c | 6 |
7 files changed, 92 insertions, 37 deletions
diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c index 2fa43183d37..43508d61eb7 100644 --- a/drivers/i2c/busses/i2c-amd756.c +++ b/drivers/i2c/busses/i2c-amd756.c @@ -290,7 +290,7 @@ static u32 amd756_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_BLOCK_DATA | I2C_FUNC_SMBUS_PROC_CALL; + I2C_FUNC_SMBUS_BLOCK_DATA; } static const struct i2c_algorithm smbus_algorithm = { diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c index 491718fe46b..cae9dc89d88 100644 --- a/drivers/i2c/busses/i2c-au1550.c +++ b/drivers/i2c/busses/i2c-au1550.c @@ -335,7 +335,7 @@ i2c_au1550_probe(struct platform_device *pdev) goto out_mem; } - priv->psc_base = r->start; + priv->psc_base = CKSEG1ADDR(r->start); priv->xfer_timeout = 200; priv->ack_timeout = 200; diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index 18beb0ad7bf..a076129de7e 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -99,7 +99,7 @@ static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing) u32 x; int result = 0; - if (i2c->irq == 0) + if (i2c->irq == NO_IRQ) { while (!(readb(i2c->base + MPC_I2C_SR) & CSR_MIF)) { schedule(); @@ -329,10 +329,9 @@ static int fsl_i2c_probe(struct platform_device *pdev) return -ENOMEM; i2c->irq = platform_get_irq(pdev, 0); - if (i2c->irq < 0) { - result = -ENXIO; - goto fail_get_irq; - } + if (i2c->irq < 0) + i2c->irq = NO_IRQ; /* Use polling */ + i2c->flags = pdata->device_flags; init_waitqueue_head(&i2c->queue); @@ -344,7 +343,7 @@ static int fsl_i2c_probe(struct platform_device *pdev) goto fail_map; } - if (i2c->irq != 0) + if (i2c->irq != NO_IRQ) if ((result = request_irq(i2c->irq, mpc_i2c_isr, IRQF_SHARED, "i2c-mpc", i2c)) < 0) { printk(KERN_ERR @@ -367,12 +366,11 @@ static int fsl_i2c_probe(struct platform_device *pdev) return result; fail_add: - if (i2c->irq != 0) + if (i2c->irq != NO_IRQ) free_irq(i2c->irq, i2c); fail_irq: iounmap(i2c->base); fail_map: - fail_get_irq: kfree(i2c); return result; }; @@ -384,7 +382,7 @@ static int fsl_i2c_remove(struct platform_device *pdev) i2c_del_adapter(&i2c->adap); platform_set_drvdata(pdev, NULL); - if (i2c->irq != 0) + if (i2c->irq != NO_IRQ) free_irq(i2c->irq, i2c); iounmap(i2c->base); diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index 3dac920e53e..43c9f8df950 100644 --- a/drivers/i2c/busses/i2c-nforce2.c +++ b/drivers/i2c/busses/i2c-nforce2.c @@ -50,6 +50,7 @@ #include <linux/init.h> #include <linux/i2c.h> #include <linux/delay.h> +#include <linux/dmi.h> #include <asm/io.h> MODULE_LICENSE("GPL"); @@ -109,6 +110,18 @@ struct nforce2_smbus { /* Misc definitions */ #define MAX_TIMEOUT 100 +/* We disable the second SMBus channel on these boards */ +static struct dmi_system_id __devinitdata nforce2_dmi_blacklist2[] = { + { + .ident = "DFI Lanparty NF4 Expert", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "DFI Corp,LTD"), + DMI_MATCH(DMI_BOARD_NAME, "LP UT NF4 Expert"), + }, + }, + { } +}; + static struct pci_driver nforce2_driver; static void nforce2_abort(struct i2c_adapter *adap) @@ -367,10 +380,17 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_ smbuses[0].base = 0; /* to have a check value */ } /* SMBus adapter 2 */ - res2 = nforce2_probe_smb(dev, 5, NFORCE_PCI_SMB2, &smbuses[1], "SMB2"); - if (res2 < 0) { - dev_err(&dev->dev, "Error probing SMB2.\n"); - smbuses[1].base = 0; /* to have a check value */ + if (dmi_check_system(nforce2_dmi_blacklist2)) { + dev_err(&dev->dev, "Disabling SMB2 for safety reasons.\n"); + res2 = -EPERM; + smbuses[1].base = 0; + } else { + res2 = nforce2_probe_smb(dev, 5, NFORCE_PCI_SMB2, &smbuses[1], + "SMB2"); + if (res2 < 0) { + dev_err(&dev->dev, "Error probing SMB2.\n"); + 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 */ diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index fdc9ad805e3..ac916596858 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -104,10 +104,31 @@ MODULE_PARM_DESC(force_addr, static int piix4_transaction(void); static unsigned short piix4_smba; +static int srvrworks_csb5_delay; static struct pci_driver piix4_driver; static struct i2c_adapter piix4_adapter; -static struct dmi_system_id __devinitdata piix4_dmi_table[] = { +static struct dmi_system_id __devinitdata piix4_dmi_blacklist[] = { + { + .ident = "Sapphire AM2RD790", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "SAPPHIRE Inc."), + DMI_MATCH(DMI_BOARD_NAME, "PC-AM2RD790"), + }, + }, + { + .ident = "DFI Lanparty UT 790FX", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "DFI Inc."), + DMI_MATCH(DMI_BOARD_NAME, "LP UT 790FX"), + }, + }, + { } +}; + +/* The IBM entry is in a separate table because we only check it + on Intel-based systems */ +static struct dmi_system_id __devinitdata piix4_dmi_ibm[] = { { .ident = "IBM", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "IBM"), }, @@ -122,8 +143,20 @@ static int __devinit piix4_setup(struct pci_dev *PIIX4_dev, dev_info(&PIIX4_dev->dev, "Found %s device\n", pci_name(PIIX4_dev)); + if ((PIIX4_dev->vendor == PCI_VENDOR_ID_SERVERWORKS) && + (PIIX4_dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5)) + srvrworks_csb5_delay = 1; + + /* On some motherboards, it was reported that accessing the SMBus + caused severe hardware problems */ + if (dmi_check_system(piix4_dmi_blacklist)) { + dev_err(&PIIX4_dev->dev, + "Accessing the SMBus on this system is unsafe!\n"); + return -EPERM; + } + /* Don't access SMBus on IBM systems which get corrupted eeproms */ - if (dmi_check_system(piix4_dmi_table) && + if (dmi_check_system(piix4_dmi_ibm) && PIIX4_dev->vendor == PCI_VENDOR_ID_INTEL) { dev_err(&PIIX4_dev->dev, "IBM system detected; this module " "may corrupt your serial eeprom! Refusing to load " @@ -230,10 +263,14 @@ static int piix4_transaction(void) outb_p(inb(SMBHSTCNT) | 0x040, SMBHSTCNT); /* We will always wait for a fraction of a second! (See PIIX4 docs errata) */ - do { + if (srvrworks_csb5_delay) /* Extra delay for SERVERWORKS_CSB5 */ + msleep(2); + else + msleep(1); + + while ((timeout++ < MAX_TIMEOUT) && + ((temp = inb_p(SMBHSTSTS)) & 0x01)) msleep(1); - temp = inb_p(SMBHSTSTS); - } while ((temp & 0x01) && (timeout++ < MAX_TIMEOUT)); /* If the SMBus is still busy, we give up */ if (timeout >= MAX_TIMEOUT) { diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index 1305ef190fc..9e8c875437b 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -290,12 +290,12 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat) * bus, or started a new i2c message */ - if (iicstat & S3C2410_IICSTAT_LASTBIT && + if (iicstat & S3C2410_IICSTAT_LASTBIT && !(i2c->msg->flags & I2C_M_IGNORE_NAK)) { /* ack was not received... */ dev_dbg(i2c->dev, "ack was not received\n"); - s3c24xx_i2c_stop(i2c, -EREMOTEIO); + s3c24xx_i2c_stop(i2c, -ENXIO); goto out_ack; } @@ -305,7 +305,7 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat) i2c->state = STATE_WRITE; /* terminate the transfer if there is nothing to do - * (used by the i2c probe to find devices */ + * as this is used by the i2c probe to find devices. */ if (is_lastmsg(i2c) && i2c->msg->len == 0) { s3c24xx_i2c_stop(i2c, 0); @@ -323,7 +323,17 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat) * end of the message, and if so, work out what to do */ + if (!(i2c->msg->flags & I2C_M_IGNORE_NAK)) { + if (iicstat & S3C2410_IICSTAT_LASTBIT) { + dev_dbg(i2c->dev, "WRITE: No Ack\n"); + + s3c24xx_i2c_stop(i2c, -ECONNREFUSED); + goto out_ack; + } + } + retry_write: + if (!is_msgend(i2c)) { byte = i2c->msg->buf[i2c->msg_ptr++]; writeb(byte, i2c->regs + S3C2410_IICDS); @@ -377,17 +387,6 @@ static int i2s_s3c_irq_nextbyte(struct s3c24xx_i2c *i2c, unsigned long iicstat) * going to do any more read/write */ - if (!(i2c->msg->flags & I2C_M_IGNORE_NAK) && - !(is_msglast(i2c) && is_lastmsg(i2c))) { - - if (iicstat & S3C2410_IICSTAT_LASTBIT) { - dev_dbg(i2c->dev, "READ: No Ack\n"); - - s3c24xx_i2c_stop(i2c, -ECONNREFUSED); - goto out_ack; - } - } - byte = readb(i2c->regs + S3C2410_IICDS); i2c->msg->buf[i2c->msg_ptr++] = byte; @@ -949,3 +948,4 @@ MODULE_DESCRIPTION("S3C24XX I2C Bus driver"); MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:s3c2410-i2c"); +MODULE_ALIAS("platform:s3c2440-i2c"); diff --git a/drivers/i2c/busses/i2c-sibyte.c b/drivers/i2c/busses/i2c-sibyte.c index 8fbbdb4c2f3..114634da6c6 100644 --- a/drivers/i2c/busses/i2c-sibyte.c +++ b/drivers/i2c/busses/i2c-sibyte.c @@ -132,14 +132,14 @@ static const struct i2c_algorithm i2c_sibyte_algo = { /* * registering functions to load algorithms at runtime */ -int __init i2c_sibyte_add_bus(struct i2c_adapter *i2c_adap, int speed) +static int __init i2c_sibyte_add_bus(struct i2c_adapter *i2c_adap, int speed) { struct i2c_algo_sibyte_data *adap = i2c_adap->algo_data; - /* register new adapter to i2c module... */ + /* Register new adapter to i2c module... */ i2c_adap->algo = &i2c_sibyte_algo; - /* Set the frequency to 100 kHz */ + /* Set the requested frequency. */ csr_out32(speed, SMB_CSR(adap,R_SMB_FREQ)); csr_out32(0, SMB_CSR(adap,R_SMB_CONTROL)); |