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-rw-r--r--drivers/i2c/busses/Kconfig33
-rw-r--r--drivers/i2c/busses/Makefile1
-rw-r--r--drivers/i2c/busses/i2c-amd756.c5
-rw-r--r--drivers/i2c/busses/i2c-au1550.c177
-rw-r--r--drivers/i2c/busses/i2c-au1550.h32
-rw-r--r--drivers/i2c/busses/i2c-bfin-twi.c3
-rw-r--r--drivers/i2c/busses/i2c-davinci.c1
-rw-r--r--drivers/i2c/busses/i2c-i801.c163
-rw-r--r--drivers/i2c/busses/i2c-ibm_iic.c191
-rw-r--r--drivers/i2c/busses/i2c-ibm_iic.h8
-rw-r--r--drivers/i2c/busses/i2c-iop3xx.c1
-rw-r--r--drivers/i2c/busses/i2c-ixp4xx.c178
-rw-r--r--drivers/i2c/busses/i2c-mpc.c29
-rw-r--r--drivers/i2c/busses/i2c-nforce2.c1
-rw-r--r--drivers/i2c/busses/i2c-omap.c2
-rw-r--r--drivers/i2c/busses/i2c-pasemi.c3
-rw-r--r--drivers/i2c/busses/i2c-piix4.c41
-rw-r--r--drivers/i2c/busses/i2c-pxa.c189
-rw-r--r--drivers/i2c/busses/i2c-sibyte.c29
-rw-r--r--drivers/i2c/busses/i2c-stub.c15
-rw-r--r--drivers/i2c/busses/i2c-viapro.c11
21 files changed, 538 insertions, 575 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index c466c6cfc2e..8d12b26bb6c 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -182,7 +182,8 @@ config I2C_I801
will be called i2c-i801.
config I2C_I810
- tristate "Intel 810/815"
+ tristate "Intel 810/815 (DEPRECATED)"
+ default n
depends on PCI
select I2C_ALGOBIT
help
@@ -195,6 +196,8 @@ config I2C_I810
i815
i845G
+ This driver is deprecated in favor of the i810fb and intelfb drivers.
+
This driver can also be built as a module. If so, the module
will be called i2c-i810.
@@ -259,20 +262,6 @@ config I2C_IOP3XX
This driver can also be built as a module. If so, the module
will be called i2c-iop3xx.
-config I2C_IXP4XX
- tristate "IXP4xx GPIO-Based I2C Interface (DEPRECATED)"
- depends on ARCH_IXP4XX
- select I2C_ALGOBIT
- help
- Say Y here if you have an Intel IXP4xx(420,421,422,425) based
- system and are using GPIO lines for an I2C bus.
-
- This support is also available as a module. If so, the module
- will be called i2c-ixp4xx.
-
- This driver is deprecated and will be dropped soon. Use i2c-gpio
- instead.
-
config I2C_IXP2000
tristate "IXP2000 GPIO-Based I2C Interface (DEPRECATED)"
depends on ARCH_IXP2000
@@ -396,7 +385,8 @@ config I2C_PASEMI
Supports the PA Semi PWRficient on-chip SMBus interfaces.
config I2C_PROSAVAGE
- tristate "S3/VIA (Pro)Savage"
+ tristate "S3/VIA (Pro)Savage (DEPRECATED)"
+ default n
depends on PCI
select I2C_ALGOBIT
help
@@ -407,6 +397,8 @@ config I2C_PROSAVAGE
S3/VIA KM266/VT8375 aka ProSavage8
S3/VIA KM133/VT8365 aka Savage4
+ This driver is deprecated in favor of the savagefb driver.
+
This support is also available as a module. If so, the module
will be called i2c-prosavage.
@@ -418,13 +410,16 @@ config I2C_S3C2410
Samsung S3C2410 based System-on-Chip devices.
config I2C_SAVAGE4
- tristate "S3 Savage 4"
- depends on PCI && EXPERIMENTAL
+ tristate "S3 Savage 4 (DEPRECATED)"
+ default n
+ depends on PCI
select I2C_ALGOBIT
help
If you say yes to this option, support will be included for the
S3 Savage 4 I2C interface.
+ This driver is deprecated in favor of the savagefb driver.
+
This driver can also be built as a module. If so, the module
will be called i2c-savage4.
@@ -611,7 +606,7 @@ config I2C_VIAPRO
VT8231
VT8233/A
VT8235
- VT8237R/A
+ VT8237R/A/S
VT8251
CX700
diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
index 81d43c27cf9..ea7068f1eb6 100644
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -20,7 +20,6 @@ obj-$(CONFIG_I2C_I810) += i2c-i810.o
obj-$(CONFIG_I2C_IBM_IIC) += i2c-ibm_iic.o
obj-$(CONFIG_I2C_IOP3XX) += i2c-iop3xx.o
obj-$(CONFIG_I2C_IXP2000) += i2c-ixp2000.o
-obj-$(CONFIG_I2C_IXP4XX) += i2c-ixp4xx.o
obj-$(CONFIG_I2C_POWERMAC) += i2c-powermac.o
obj-$(CONFIG_I2C_MPC) += i2c-mpc.o
obj-$(CONFIG_I2C_MV64XXX) += i2c-mv64xxx.o
diff --git a/drivers/i2c/busses/i2c-amd756.c b/drivers/i2c/busses/i2c-amd756.c
index 7490dc1771a..573abe44084 100644
--- a/drivers/i2c/busses/i2c-amd756.c
+++ b/drivers/i2c/busses/i2c-amd756.c
@@ -334,6 +334,10 @@ static int __devinit amd756_probe(struct pci_dev *pdev,
int error;
u8 temp;
+ /* driver_data might come from user-space, so check it */
+ if (id->driver_data > ARRAY_SIZE(chipname))
+ return -EINVAL;
+
if (amd756_ioport) {
dev_err(&pdev->dev, "Only one device supported "
"(you have a strange motherboard, btw)\n");
@@ -405,6 +409,7 @@ static struct pci_driver amd756_driver = {
.id_table = amd756_ids,
.probe = amd756_probe,
.remove = __devexit_p(amd756_remove),
+ .dynids.use_driver_data = 1,
};
static int __init amd756_init(void)
diff --git a/drivers/i2c/busses/i2c-au1550.c b/drivers/i2c/busses/i2c-au1550.c
index 2f684166c43..1953b26da56 100644
--- a/drivers/i2c/busses/i2c-au1550.c
+++ b/drivers/i2c/busses/i2c-au1550.c
@@ -30,14 +30,22 @@
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/platform_device.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/i2c.h>
+#include <linux/slab.h>
#include <asm/mach-au1x00/au1xxx.h>
#include <asm/mach-au1x00/au1xxx_psc.h>
-#include "i2c-au1550.h"
+struct i2c_au1550_data {
+ u32 psc_base;
+ int xfer_timeout;
+ int ack_timeout;
+ struct i2c_adapter adap;
+ struct resource *ioarea;
+};
static int
wait_xfer_done(struct i2c_au1550_data *adap)
@@ -105,7 +113,7 @@ wait_master_done(struct i2c_au1550_data *adap)
}
static int
-do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd)
+do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd, int q)
{
volatile psc_smb_t *sp;
u32 stat;
@@ -134,6 +142,10 @@ do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd)
if (rd)
addr |= 1;
+ /* zero-byte xfers stop immediately */
+ if (q)
+ addr |= PSC_SMBTXRX_STP;
+
/* Put byte into fifo, start up master.
*/
sp->psc_smbtxrx = addr;
@@ -142,7 +154,7 @@ do_address(struct i2c_au1550_data *adap, unsigned int addr, int rd)
au_sync();
if (wait_ack(adap))
return -EIO;
- return 0;
+ return (q) ? wait_master_done(adap) : 0;
}
static u32
@@ -262,7 +274,8 @@ au1550_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num)
for (i = 0; !err && i < num; i++) {
p = &msgs[i];
- err = do_address(adap, p->addr, p->flags & I2C_M_RD);
+ err = do_address(adap, p->addr, p->flags & I2C_M_RD,
+ (p->len == 0));
if (err || !p->len)
continue;
if (p->flags & I2C_M_RD)
@@ -294,18 +307,48 @@ static const struct i2c_algorithm au1550_algo = {
* Prior to calling us, the 50MHz clock frequency and routing
* must have been set up for the PSC indicated by the adapter.
*/
-int
-i2c_au1550_add_bus(struct i2c_adapter *i2c_adap)
+static int __devinit
+i2c_au1550_probe(struct platform_device *pdev)
{
- struct i2c_au1550_data *adap = i2c_adap->algo_data;
- volatile psc_smb_t *sp;
- u32 stat;
+ struct i2c_au1550_data *priv;
+ volatile psc_smb_t *sp;
+ struct resource *r;
+ u32 stat;
+ int ret;
+
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!r) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ priv = kzalloc(sizeof(struct i2c_au1550_data), GFP_KERNEL);
+ if (!priv) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ priv->ioarea = request_mem_region(r->start, r->end - r->start + 1,
+ pdev->name);
+ if (!priv->ioarea) {
+ ret = -EBUSY;
+ goto out_mem;
+ }
- i2c_adap->algo = &au1550_algo;
+ priv->psc_base = r->start;
+ priv->xfer_timeout = 200;
+ priv->ack_timeout = 200;
+
+ priv->adap.id = I2C_HW_AU1550_PSC;
+ priv->adap.nr = pdev->id;
+ priv->adap.algo = &au1550_algo;
+ priv->adap.algo_data = priv;
+ priv->adap.dev.parent = &pdev->dev;
+ strlcpy(priv->adap.name, "Au1xxx PSC I2C", sizeof(priv->adap.name));
/* Now, set up the PSC for SMBus PIO mode.
*/
- sp = (volatile psc_smb_t *)(adap->psc_base);
+ sp = (volatile psc_smb_t *)priv->psc_base;
sp->psc_ctrl = PSC_CTRL_DISABLE;
au_sync();
sp->psc_sel = PSC_SEL_PS_SMBUSMODE;
@@ -343,87 +386,87 @@ i2c_au1550_add_bus(struct i2c_adapter *i2c_adap)
au_sync();
} while ((stat & PSC_SMBSTAT_DR) == 0);
- return i2c_add_adapter(i2c_adap);
-}
+ ret = i2c_add_numbered_adapter(&priv->adap);
+ if (ret == 0) {
+ platform_set_drvdata(pdev, priv);
+ return 0;
+ }
+ /* disable the PSC */
+ sp->psc_smbcfg = 0;
+ sp->psc_ctrl = PSC_CTRL_DISABLE;
+ au_sync();
-int
-i2c_au1550_del_bus(struct i2c_adapter *adap)
+ release_resource(priv->ioarea);
+ kfree(priv->ioarea);
+out_mem:
+ kfree(priv);
+out:
+ return ret;
+}
+
+static int __devexit
+i2c_au1550_remove(struct platform_device *pdev)
{
- return i2c_del_adapter(adap);
+ struct i2c_au1550_data *priv = platform_get_drvdata(pdev);
+ volatile psc_smb_t *sp = (volatile psc_smb_t *)priv->psc_base;
+
+ platform_set_drvdata(pdev, NULL);
+ i2c_del_adapter(&priv->adap);
+ sp->psc_smbcfg = 0;
+ sp->psc_ctrl = PSC_CTRL_DISABLE;
+ au_sync();
+ release_resource(priv->ioarea);
+ kfree(priv->ioarea);
+ kfree(priv);
+ return 0;
}
static int
-pb1550_reg(struct i2c_client *client)
+i2c_au1550_suspend(struct platform_device *pdev, pm_message_t state)
{
+ struct i2c_au1550_data *priv = platform_get_drvdata(pdev);
+ volatile psc_smb_t *sp = (volatile psc_smb_t *)priv->psc_base;
+
+ sp->psc_ctrl = PSC_CTRL_SUSPEND;
+ au_sync();
return 0;
}
static int
-pb1550_unreg(struct i2c_client *client)
+i2c_au1550_resume(struct platform_device *pdev)
{
+ struct i2c_au1550_data *priv = platform_get_drvdata(pdev);
+ volatile psc_smb_t *sp = (volatile psc_smb_t *)priv->psc_base;
+
+ sp->psc_ctrl = PSC_CTRL_ENABLE;
+ au_sync();
+ while (!(sp->psc_smbstat & PSC_SMBSTAT_SR))
+ au_sync();
return 0;
}
-static struct i2c_au1550_data pb1550_i2c_info = {
- SMBUS_PSC_BASE, 200, 200
-};
-
-static struct i2c_adapter pb1550_board_adapter = {
- name: "pb1550 adapter",
- id: I2C_HW_AU1550_PSC,
- algo: NULL,
- algo_data: &pb1550_i2c_info,
- client_register: pb1550_reg,
- client_unregister: pb1550_unreg,
+static struct platform_driver au1xpsc_smbus_driver = {
+ .driver = {
+ .name = "au1xpsc_smbus",
+ .owner = THIS_MODULE,
+ },
+ .probe = i2c_au1550_probe,
+ .remove = __devexit_p(i2c_au1550_remove),
+ .suspend = i2c_au1550_suspend,
+ .resume = i2c_au1550_resume,
};
-/* BIG hack to support the control interface on the Wolfson WM8731
- * audio codec on the Pb1550 board. We get an address and two data
- * bytes to write, create an i2c message, and send it across the
- * i2c transfer function. We do this here because we have access to
- * the i2c adapter structure.
- */
-static struct i2c_msg wm_i2c_msg; /* We don't want this stuff on the stack */
-static u8 i2cbuf[2];
-
-int
-pb1550_wm_codec_write(u8 addr, u8 reg, u8 val)
-{
- wm_i2c_msg.addr = addr;
- wm_i2c_msg.flags = 0;
- wm_i2c_msg.buf = i2cbuf;
- wm_i2c_msg.len = 2;
- i2cbuf[0] = reg;
- i2cbuf[1] = val;
-
- return pb1550_board_adapter.algo->master_xfer(&pb1550_board_adapter, &wm_i2c_msg, 1);
-}
-
static int __init
i2c_au1550_init(void)
{
- printk(KERN_INFO "Au1550 I2C: ");
-
- /* This is where we would set up a 50MHz clock source
- * and routing. On the Pb1550, the SMBus is PSC2, which
- * uses a shared clock with USB. This has been already
- * configured by Yamon as a 48MHz clock, close enough
- * for our work.
- */
- if (i2c_au1550_add_bus(&pb1550_board_adapter) < 0) {
- printk("failed to initialize.\n");
- return -ENODEV;
- }
-
- printk("initialized.\n");
- return 0;
+ return platform_driver_register(&au1xpsc_smbus_driver);
}
static void __exit
i2c_au1550_exit(void)
{
- i2c_au1550_del_bus(&pb1550_board_adapter);
+ platform_driver_unregister(&au1xpsc_smbus_driver);
}
MODULE_AUTHOR("Dan Malek, Embedded Edge, LLC.");
diff --git a/drivers/i2c/busses/i2c-au1550.h b/drivers/i2c/busses/i2c-au1550.h
deleted file mode 100644
index fce15d161ae..00000000000
--- a/drivers/i2c/busses/i2c-au1550.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright (C) 2004 Embedded Edge, LLC <dan@embeddededge.com>
- * 2.6 port by Matt Porter <mporter@kernel.crashing.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
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef I2C_AU1550_H
-#define I2C_AU1550_H
-
-struct i2c_au1550_data {
- u32 psc_base;
- int xfer_timeout;
- int ack_timeout;
-};
-
-int i2c_au1550_add_bus(struct i2c_adapter *);
-int i2c_au1550_del_bus(struct i2c_adapter *);
-
-#endif /* I2C_AU1550_H */
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c
index 67224a424ab..7dbdaeb707a 100644
--- a/drivers/i2c/busses/i2c-bfin-twi.c
+++ b/drivers/i2c/busses/i2c-bfin-twi.c
@@ -550,6 +550,7 @@ static int i2c_bfin_twi_probe(struct platform_device *dev)
p_adap = &iface->adap;
p_adap->id = I2C_HW_BLACKFIN;
+ p_adap->nr = dev->id;
strlcpy(p_adap->name, dev->name, sizeof(p_adap->name));
p_adap->algo = &bfin_twi_algorithm;
p_adap->algo_data = iface;
@@ -576,7 +577,7 @@ static int i2c_bfin_twi_probe(struct platform_device *dev)
bfin_write_TWI_CONTROL(bfin_read_TWI_CONTROL() | TWI_ENA);
SSYNC();
- rc = i2c_add_adapter(p_adap);
+ rc = i2c_add_numbered_adapter(p_adap);
if (rc < 0)
free_irq(iface->irq, iface);
else
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index 67679882ebe..cce5a614758 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -510,7 +510,6 @@ static int davinci_i2c_probe(struct platform_device *pdev)
/* FIXME */
adap->timeout = 1;
- adap->retries = 1;
adap->nr = pdev->id;
r = i2c_add_numbered_adapter(adap);
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index ac27e5f84eb..aa9157913b9 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -4,6 +4,7 @@
Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>,
Philip Edelbrock <phil@netroedge.com>, and Mark D. Studebaker
<mdsxyz123@yahoo.com>
+ Copyright (C) 2007 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
@@ -21,25 +22,34 @@
*/
/*
- SUPPORTED DEVICES PCI ID
- 82801AA 2413
- 82801AB 2423
- 82801BA 2443
- 82801CA/CAM 2483
- 82801DB 24C3 (HW PEC supported)
- 82801EB 24D3 (HW PEC supported)
- 6300ESB 25A4
- ICH6 266A
- ICH7 27DA
- ESB2 269B
- ICH8 283E
- ICH9 2930
- Tolapai 5032
- This driver supports several versions of Intel's I/O Controller Hubs (ICH).
- For SMBus support, they are similar to the PIIX4 and are part
- of Intel's '810' and other chipsets.
- See the file Documentation/i2c/busses/i2c-i801 for details.
- I2C Block Read and Process Call are not supported.
+ Supports the following Intel I/O Controller Hubs (ICH):
+
+ I/O Block I2C
+ region SMBus Block proc. block
+ Chip name PCI ID size PEC buffer call read
+ ----------------------------------------------------------------------
+ 82801AA (ICH) 0x2413 16 no no no no
+ 82801AB (ICH0) 0x2423 16 no no no no
+ 82801BA (ICH2) 0x2443 16 no no no no
+ 82801CA (ICH3) 0x2483 32 soft no no no
+ 82801DB (ICH4) 0x24c3 32 hard yes no no
+ 82801E (ICH5) 0x24d3 32 hard yes yes yes
+ 6300ESB 0x25a4 32 hard yes yes yes
+ 82801F (ICH6) 0x266a 32 hard yes yes yes
+ 6310ESB/6320ESB 0x269b 32 hard yes yes yes
+ 82801G (ICH7) 0x27da 32 hard yes yes yes
+ 82801H (ICH8) 0x283e 32 hard yes yes yes
+ 82801I (ICH9) 0x2930 32 hard yes yes yes
+ Tolapai 0x5032 32 hard yes ? ?
+
+ Features supported by this driver:
+ Software PEC no
+ Hardware PEC yes
+ Block buffer yes
+ Block process call transaction no
+ I2C block read transaction yes (doesn't use the block buffer)
+
+ See the file Documentation/i2c/busses/i2c-i801 for details.
*/
/* Note: we assume there can only be one I801, with one SMBus interface */
@@ -62,9 +72,9 @@
#define SMBHSTDAT0 (5 + i801_smba)
#define SMBHSTDAT1 (6 + i801_smba)
#define SMBBLKDAT (7 + i801_smba)
-#define SMBPEC (8 + i801_smba) /* ICH4 only */
-#define SMBAUXSTS (12 + i801_smba) /* ICH4 only */
-#define SMBAUXCTL (13 + i801_smba) /* ICH4 only */
+#define SMBPEC (8 + i801_smba) /* ICH3 and later */
+#define SMBAUXSTS (12 + i801_smba) /* ICH4 and later */
+#define SMBAUXCTL (13 + i801_smba) /* ICH4 and later */
/* PCI Address Constants */
#define SMBBAR 4
@@ -91,13 +101,13 @@
#define I801_BYTE 0x04
#define I801_BYTE_DATA 0x08
#define I801_WORD_DATA 0x0C
-#define I801_PROC_CALL 0x10 /* later chips only, unimplemented */
+#define I801_PROC_CALL 0x10 /* unimplemented */
#define I801_BLOCK_DATA 0x14
-#define I801_I2C_BLOCK_DATA 0x18 /* unimplemented */
+#define I801_I2C_BLOCK_DATA 0x18 /* ICH5 and later */
#define I801_BLOCK_LAST 0x34
-#define I801_I2C_BLOCK_LAST 0x38 /* unimplemented */
+#define I801_I2C_BLOCK_LAST 0x38 /* ICH5 and later */
#define I801_START 0x40
-#define I801_PEC_EN 0x80 /* ICH4 only */
+#define I801_PEC_EN 0x80 /* ICH3 and later */
/* I801 Hosts Status register bits */
#define SMBHSTSTS_BYTE_DONE 0x80
@@ -113,7 +123,12 @@ static unsigned long i801_smba;
static unsigned char i801_original_hstcfg;
static struct pci_driver i801_driver;
static struct pci_dev *I801_dev;
-static int isich4;
+
+#define FEATURE_SMBUS_PEC (1 << 0)
+#define FEATURE_BLOCK_BUFFER (1 << 1)
+#define FEATURE_BLOCK_PROC (1 << 2)
+#define FEATURE_I2C_BLOCK_READ (1 << 3)
+static unsigned int i801_features;
static int i801_transaction(int xact)
{
@@ -242,7 +257,8 @@ static int i801_block_transaction_by_block(union i2c_smbus_data *data,
}
static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data,
- char read_write, int hwpec)
+ char read_write, int command,
+ int hwpec)
{
int i, len;
int smbcmd;
@@ -259,16 +275,24 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data,
}
for (i = 1; i <= len; i++) {
- if (i == len && read_write == I2C_SMBUS_READ)
- smbcmd = I801_BLOCK_LAST;
- else
- smbcmd = I801_BLOCK_DATA;
+ if (i == len && read_write == I2C_SMBUS_READ) {
+ if (command == I2C_SMBUS_I2C_BLOCK_DATA)
+ smbcmd = I801_I2C_BLOCK_LAST;
+ else
+ smbcmd = I801_BLOCK_LAST;
+ } else {
+ if (command == I2C_SMBUS_I2C_BLOCK_DATA
+ && read_write == I2C_SMBUS_READ)
+ smbcmd = I801_I2C_BLOCK_DATA;
+ else
+ smbcmd = I801_BLOCK_DATA;
+ }
outb_p(smbcmd | ENABLE_INT9, SMBHSTCNT);
dev_dbg(&I801_dev->dev, "Block (pre %d): CNT=%02x, CMD=%02x, "
- "ADD=%02x, DAT0=%02x, BLKDAT=%02x\n", i,
+ "ADD=%02x, DAT0=%02x, DAT1=%02x, BLKDAT=%02x\n", i,
inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD),
- inb_p(SMBHSTDAT0), inb_p(SMBBLKDAT));
+ inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1), inb_p(SMBBLKDAT));
/* Make sure the SMBus host is ready to start transmitting */
temp = inb_p(SMBHSTSTS);
@@ -332,7 +356,8 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data,
dev_dbg(&I801_dev->dev, "Error: no response!\n");
}
- if (i == 1 && read_write == I2C_SMBUS_READ) {
+ if (i == 1 && read_write == I2C_SMBUS_READ
+ && command != I2C_SMBUS_I2C_BLOCK_DATA) {
len = inb_p(SMBHSTDAT0);
if (len < 1 || len > I2C_SMBUS_BLOCK_MAX)
return -1;
@@ -353,9 +378,9 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data,
temp);
}
dev_dbg(&I801_dev->dev, "Block (post %d): CNT=%02x, CMD=%02x, "
- "ADD=%02x, DAT0=%02x, BLKDAT=%02x\n", i,
+ "ADD=%02x, DAT0=%02x, DAT1=%02x, BLKDAT=%02x\n", i,
inb_p(SMBHSTCNT), inb_p(SMBHSTCMD), inb_p(SMBHSTADD),
- inb_p(SMBHSTDAT0), inb_p(SMBBLKDAT));
+ inb_p(SMBHSTDAT0), inb_p(SMBHSTDAT1), inb_p(SMBBLKDAT));
if (result < 0)
return result;
@@ -384,33 +409,38 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
pci_read_config_byte(I801_dev, SMBHSTCFG, &hostc);
pci_write_config_byte(I801_dev, SMBHSTCFG,
hostc | SMBHSTCFG_I2C_EN);
- } else {
+ } else if (!(i801_features & FEATURE_I2C_BLOCK_READ)) {
dev_err(&I801_dev->dev,
- "I2C_SMBUS_I2C_BLOCK_READ not DB!\n");
+ "I2C block read is unsupported!\n");
return -1;
}
}
- if (read_write == I2C_SMBUS_WRITE) {
+ if (read_write == I2C_SMBUS_WRITE
+ || command == I2C_SMBUS_I2C_BLOCK_DATA) {
if (data->block[0] < 1)
data->block[0] = 1;
if (data->block[0] > I2C_SMBUS_BLOCK_MAX)
data->block[0] = I2C_SMBUS_BLOCK_MAX;
} else {
- data->block[0] = 32; /* max for reads */
+ data->block[0] = 32; /* max for SMBus block reads */
}
- if (isich4 && i801_set_block_buffer_mode() == 0 )
+ if ((i801_features & FEATURE_BLOCK_BUFFER)
+ && !(command == I2C_SMBUS_I2C_BLOCK_DATA
+ && read_write == I2C_SMBUS_READ)
+ && i801_set_block_buffer_mode() == 0)
result = i801_block_transaction_by_block(data, read_write,
hwpec);
else
result = i801_block_transaction_byte_by_byte(data, read_write,
- hwpec);
+ command, hwpec);
if (result == 0 && hwpec)
i801_wait_hwpec();
- if (command == I2C_SMBUS_I2C_BLOCK_DATA) {
+ if (command == I2C_SMBUS_I2C_BLOCK_DATA
+ && read_write == I2C_SMBUS_WRITE) {
/* restore saved configuration register value */
pci_write_config_byte(I801_dev, SMBHSTCFG, hostc);
}
@@ -426,7 +456,7 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
int block = 0;
int ret, xact = 0;
- hwpec = isich4 && (flags & I2C_CLIENT_PEC)
+ hwpec = (i801_features & FEATURE_SMBUS_PEC) && (flags & I2C_CLIENT_PEC)
&& size != I2C_SMBUS_QUICK
&& size != I2C_SMBUS_I2C_BLOCK_DATA;
@@ -462,12 +492,23 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
xact = I801_WORD_DATA;
break;
case I2C_SMBUS_BLOCK_DATA:
- case I2C_SMBUS_I2C_BLOCK_DATA:
outb_p(((addr & 0x7f) << 1) | (read_write & 0x01),
SMBHSTADD);
outb_p(command, SMBHSTCMD);
block = 1;
break;
+ case I2C_SMBUS_I2C_BLOCK_DATA:
+ /* NB: page 240 of ICH5 datasheet shows that the R/#W
+ * bit should be cleared here, even when reading */
+ outb_p((addr & 0x7f) << 1, SMBHSTADD);
+ if (read_write == I2C_SMBUS_READ) {
+ /* NB: page 240 of ICH5 datasheet also shows
+ * that DATA1 is the cmd field when reading */
+ outb_p(command, SMBHSTDAT1);
+ } else
+ outb_p(command, SMBHSTCMD);
+ block = 1;
+ break;
case I2C_SMBUS_PROC_CALL:
default:
dev_err(&I801_dev->dev, "Unsupported transaction %d\n", size);
@@ -487,7 +528,7 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
/* Some BIOSes don't like it when PEC is enabled at reboot or resume
time, so we forcibly disable it after every transaction. Turn off
E32B for the same reason. */
- if (hwpec)
+ if (hwpec || block)
outb_p(inb_p(SMBAUXCTL) & ~(SMBAUXCTL_CRC | SMBAUXCTL_E32B),
SMBAUXCTL);
@@ -514,9 +555,11 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
static u32 i801_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_WRITE_I2C_BLOCK
- | (isich4 ? I2C_FUNC_SMBUS_PEC : 0);
+ I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
+ I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK |
+ ((i801_features & FEATURE_SMBUS_PEC) ? I2C_FUNC_SMBUS_PEC : 0) |
+ ((i801_features & FEATURE_I2C_BLOCK_READ) ?
+ I2C_FUNC_SMBUS_READ_I2C_BLOCK : 0);
}
static const struct i2c_algorithm smbus_algorithm = {
@@ -556,8 +599,8 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
int err;
I801_dev = dev;
+ i801_features = 0;
switch (dev->device) {
- case PCI_DEVICE_ID_INTEL_82801DB_3:
case PCI_DEVICE_ID_INTEL_82801EB_3:
case PCI_DEVICE_ID_INTEL_ESB_4:
case PCI_DEVICE_ID_INTEL_ICH6_16:
@@ -565,11 +608,13 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
case PCI_DEVICE_ID_INTEL_ESB2_17:
case PCI_DEVICE_ID_INTEL_ICH8_5:
case PCI_DEVICE_ID_INTEL_ICH9_6:
+ i801_features |= FEATURE_I2C_BLOCK_READ;
+ /* fall through */
+ case PCI_DEVICE_ID_INTEL_82801DB_3:
case PCI_DEVICE_ID_INTEL_TOLAPAI_1:
- isich4 = 1;
+ i801_features |= FEATURE_SMBUS_PEC;
+ i801_features |= FEATURE_BLOCK_BUFFER;
break;
- default:
- isich4 = 0;
}
err = pci_enable_device(dev);
@@ -610,6 +655,11 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
else
dev_dbg(&dev->dev, "SMBus using PCI Interrupt\n");
+ /* Clear special mode bits */
+ if (i801_features & (FEATURE_SMBUS_PEC | FEATURE_BLOCK_BUFFER))
+ outb_p(inb_p(SMBAUXCTL) & ~(SMBAUXCTL_CRC | SMBAUXCTL_E32B),
+ SMBAUXCTL);
+
/* set up the sysfs linkage to our parent device */
i801_adapter.dev.parent = &dev->dev;
@@ -678,9 +728,8 @@ static void __exit i2c_i801_exit(void)
pci_unregister_driver(&i801_driver);
}
-MODULE_AUTHOR ("Frodo Looijaard <frodol@dds.nl>, "
- "Philip Edelbrock <phil@netroedge.com>, "
- "and Mark D. Studebaker <mdsxyz123@yahoo.com>");
+MODULE_AUTHOR("Mark D. Studebaker <mdsxyz123@yahoo.com>, "
+ "Jean Delvare <khali@linux-fr.org>");
MODULE_DESCRIPTION("I801 SMBus driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/i2c/busses/i2c-ibm_iic.c b/drivers/i2c/busses/i2c-ibm_iic.c
index 9b43ff7270d..7c7eb0cfece 100644
--- a/drivers/i2c/busses/i2c-ibm_iic.c
+++ b/drivers/i2c/busses/i2c-ibm_iic.c
@@ -6,7 +6,7 @@
* Copyright (c) 2003, 2004 Zultys Technologies.
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
*
- * Based on original work by
+ * Based on original work by
* Ian DaSilva <idasilva@mvista.com>
* Armin Kuster <akuster@mvista.com>
* Matt Porter <mporter@mvista.com>
@@ -86,8 +86,8 @@ static void dump_iic_regs(const char* header, struct ibm_iic_private* dev)
KERN_DEBUG " sts = 0x%02x, extsts = 0x%02x\n"
KERN_DEBUG " clkdiv = 0x%02x, xfrcnt = 0x%02x\n"
KERN_DEBUG " xtcntlss = 0x%02x, directcntl = 0x%02x\n",
- in_8(&iic->cntl), in_8(&iic->mdcntl), in_8(&iic->sts),
- in_8(&iic->extsts), in_8(&iic->clkdiv), in_8(&iic->xfrcnt),
+ in_8(&iic->cntl), in_8(&iic->mdcntl), in_8(&iic->sts),
+ in_8(&iic->extsts), in_8(&iic->clkdiv), in_8(&iic->xfrcnt),
in_8(&iic->xtcntlss), in_8(&iic->directcntl));
}
# define DUMP_REGS(h,dev) dump_iic_regs((h),(dev))
@@ -125,7 +125,7 @@ static inline void iic_interrupt_mode(struct ibm_iic_private* dev, int enable)
{
out_8(&dev->vaddr->intmsk, enable ? INTRMSK_EIMTC : 0);
}
-
+
/*
* Initialize IIC interface.
*/
@@ -134,7 +134,7 @@ static void iic_dev_init(struct ibm_iic_private* dev)
volatile struct iic_regs __iomem *iic = dev->vaddr;
DBG("%d: init\n", dev->idx);
-
+
/* Clear master address */
out_8(&iic->lmadr, 0);
out_8(&iic->hmadr, 0);
@@ -160,7 +160,7 @@ static void iic_dev_init(struct ibm_iic_private* dev)
/* Clear control register */
out_8(&iic->cntl, 0);
-
+
/* Enable interrupts if possible */
iic_interrupt_mode(dev, dev->irq >= 0);
@@ -171,7 +171,7 @@ static void iic_dev_init(struct ibm_iic_private* dev)
DUMP_REGS("iic_init", dev);
}
-/*
+/*
* Reset IIC interface
*/
static void iic_dev_reset(struct ibm_iic_private* dev)
@@ -179,42 +179,42 @@ static void iic_dev_reset(struct ibm_iic_private* dev)
volatile struct iic_regs __iomem *iic = dev->vaddr;
int i;
u8 dc;
-
+
DBG("%d: soft reset\n", dev->idx);
DUMP_REGS("reset", dev);
-
+
/* Place chip in the reset state */
out_8(&iic->xtcntlss, XTCNTLSS_SRST);
-
+
/* Check if bus is free */
- dc = in_8(&iic->directcntl);
+ dc = in_8(&iic->directcntl);
if (!DIRCTNL_FREE(dc)){
DBG("%d: trying to regain bus control\n", dev->idx);
-
+
/* Try to set bus free state */
- out_8(&iic->directcntl, DIRCNTL_SDAC | DIRCNTL_SCC);
-
+ out_8(&a