diff options
Diffstat (limited to 'drivers/i2c/busses')
-rw-r--r-- | drivers/i2c/busses/Kconfig | 33 | ||||
-rw-r--r-- | drivers/i2c/busses/Makefile | 1 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-amd756.c | 5 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-au1550.c | 177 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-au1550.h | 32 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-bfin-twi.c | 3 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-davinci.c | 1 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 163 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-ibm_iic.c | 191 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-ibm_iic.h | 8 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-iop3xx.c | 1 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-ixp4xx.c | 178 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-mpc.c | 29 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-nforce2.c | 1 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-omap.c | 2 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-pasemi.c | 3 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 41 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-pxa.c | 189 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-sibyte.c | 29 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-stub.c | 15 | ||||
-rw-r--r-- | drivers/i2c/busses/i2c-viapro.c | 11 |
21 files changed, 538 insertions, 575 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index b148bf0ec6b..b61f56b6f31 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(&iic->directcntl, DIRCNTL_SDAC | DIRCNTL_SCC); + /* Wait until we regain bus control */ for (i = 0; i < 100; ++i){ dc = in_8(&iic->directcntl); if (DIRCTNL_FREE(dc)) break; - + /* Toggle SCL line */ dc ^= DIRCNTL_SCC; out_8(&iic->directcntl, dc); udelay(10); dc ^= DIRCNTL_SCC; out_8(&iic->directcntl, dc); - + /* be nice */ cond_resched(); } } - + /* Remove reset */ out_8(&iic->xtcntlss, 0); - + /* Reinitialize interface */ iic_dev_init(dev); } @@ -324,14 +324,14 @@ static irqreturn_t iic_handler(int irq, void *dev_id) { struct ibm_iic_private* dev = (struct ibm_iic_private*)dev_id; volatile struct iic_regs __iomem *iic = dev->vaddr; - - DBG2("%d: irq handler, STS = 0x%02x, EXTSTS = 0x%02x\n", + + DBG2("%d: irq handler, STS = 0x%02x, EXTSTS = 0x%02x\n", dev->idx, in_8(&iic->sts), in_8(&iic->extsts)); - + /* Acknowledge IRQ and wakeup iic_wait_for_tc */ out_8(&iic->sts, STS_IRQA | STS_SCMP); wake_up_interruptible(&dev->wq); - + return IRQ_HANDLED; } @@ -341,19 +341,19 @@ static irqreturn_t iic_handler(int irq, void *dev_id) */ static int iic_xfer_result(struct ibm_iic_private* dev) { - volatile struct iic_regs __iomem *iic = dev->vaddr; - + volatile struct iic_regs __iomem *iic = dev->vaddr; + if (unlikely(in_8(&iic->sts) & STS_ERR)){ - DBG("%d: xfer error, EXTSTS = 0x%02x\n", dev->idx, + DBG("%d: xfer error, EXTSTS = 0x%02x\n", dev->idx, in_8(&iic->extsts)); - + /* Clear errors and possible pending IRQs */ - out_8(&iic->extsts, EXTSTS_IRQP | EXTSTS_IRQD | + out_8(&iic->extsts, EXTSTS_IRQP | EXTSTS_IRQD | EXTSTS_LA | EXTSTS_ICT | EXTSTS_XFRA); - + /* Flush master data buffer */ out_8(&iic->mdcntl, in_8(&iic->mdcntl) | MDCNTL_FMDB); - + /* Is bus free? * If error happened during combined xfer * IIC interface is usually stuck in some strange @@ -376,11 +376,11 @@ static void iic_abort_xfer(struct ibm_iic_private* dev) { volatile struct iic_regs __iomem *iic = dev->vaddr; unsigned long x; - + DBG("%d: iic_abort_xfer\n", dev->idx); - + out_8(&iic->cntl, CNTL_HMT); - + /* * Wait for the abort command to complete. * It's not worth to be optimized, just poll (timeout >= 1 tick) @@ -405,13 +405,13 @@ static void iic_abort_xfer(struct ibm_iic_private* dev) * Returns the number of transferred bytes or error (<0) */ static int iic_wait_for_tc(struct ibm_iic_private* dev){ - + volatile struct iic_regs __iomem *iic = dev->vaddr; int ret = 0; - + if (dev->irq >= 0){ /* Interrupt mode */ - ret = wait_event_interruptible_timeout(dev->wq, + ret = wait_event_interruptible_timeout(dev->wq, !(in_8(&iic->sts) & STS_PT), dev->adap.timeout * HZ); if (unlikely(ret < 0)) @@ -424,37 +424,37 @@ static int iic_wait_for_tc(struct ibm_iic_private* dev){ else { /* Polling mode */ unsigned long x = jiffies + dev->adap.timeout * HZ; - + while (in_8(&iic->sts) & STS_PT){ if (unlikely(time_after(jiffies, x))){ DBG("%d: poll timeout\n", dev->idx); ret = -ETIMEDOUT; break; } - + if (unlikely(signal_pending(current))){ DBG("%d: poll interrupted\n", dev->idx); ret = -ERESTARTSYS; break; } schedule(); - } + } } - + if (unlikely(ret < 0)) iic_abort_xfer(dev); else ret = iic_xfer_result(dev); - + DBG2("%d: iic_wait_for_tc -> %d\n", dev->idx, ret); - + return ret; } /* * Low level master transfer routine */ -static int iic_xfer_bytes(struct ibm_iic_private* dev, struct i2c_msg* pm, +static int iic_xfer_bytes(struct ibm_iic_private* dev, struct i2c_msg* pm, int combined_xfer) { volatile struct iic_regs __iomem *iic = dev->vaddr; @@ -465,48 +465,48 @@ static int iic_xfer_bytes(struct ibm_iic_private* dev, struct i2c_msg* pm, u8 cntl = (in_8(&iic->cntl) & CNTL_AMD) | CNTL_PT; if (pm->flags & I2C_M_RD) cntl |= CNTL_RW; - + loops = (len + 3) / 4; for (i = 0; i < loops; ++i, len -= 4){ int count = len > 4 ? 4 : len; u8 cmd = cntl | ((count - 1) << CNTL_TCT_SHIFT); - + if (!(cntl & CNTL_RW)) for (j = 0; j < count; ++j) out_8((void __iomem *)&iic->mdbuf, *buf++); - + if (i < loops - 1) cmd |= CNTL_CHT; else if (combined_xfer) cmd |= CNTL_RPST; - + DBG2("%d: xfer_bytes, %d, CNTL = 0x%02x\n", dev->idx, count, cmd); - + /* Start transfer */ out_8(&iic->cntl, cmd); - + /* Wait for completion */ ret = iic_wait_for_tc(dev); if (unlikely(ret < 0)) break; else if (unlikely(ret != count)){ - DBG("%d: xfer_bytes, requested %d, transfered %d\n", + DBG("%d: xfer_bytes, requested %d, transfered %d\n", dev->idx, count, ret); - + /* If it's not a last part of xfer, abort it */ if (combined_xfer || (i < loops - 1)) iic_abort_xfer(dev); - + ret = -EREMOTEIO; - break; + break; } - + if (cntl & CNTL_RW) for (j = 0; j < count; ++j) *buf++ = in_8((void __iomem *)&iic->mdbuf); } - + return ret > 0 ? 0 : ret; } @@ -517,10 +517,10 @@ static inline void iic_address(struct ibm_iic_private* dev, struct i2c_msg* msg) { volatile struct iic_regs __iomem *iic = dev->vaddr; u16 addr = msg->addr; - - DBG2("%d: iic_address, 0x%03x (%d-bit)\n", dev->idx, + + DBG2("%d: iic_address, 0x%03x (%d-bit)\n", dev->idx, addr, msg->flags & I2C_M_TEN ? 10 : 7); - + if (msg->flags & I2C_M_TEN){ out_8(&iic->cntl, CNTL_AMD); out_8(&iic->lmadr, addr); @@ -537,15 +537,15 @@ static inline int iic_invalid_address(const struct i2c_msg* p) return (p->addr > 0x3ff) || (!(p->flags & I2C_M_TEN) && (p->addr > 0x7f)); } -static inline int iic_address_neq(const struct i2c_msg* p1, +static inline int iic_address_neq(const struct i2c_msg* p1, const struct i2c_msg* p2) { - return (p1->addr != p2->addr) + return (p1->addr != p2->addr) || ((p1->flags & I2C_M_TEN) != (p2->flags & I2C_M_TEN)); -} +} /* - * Generic master transfer entrypoint. + * Generic master transfer entrypoint. * Returns the number of processed messages or error (<0) */ static int iic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) @@ -553,20 +553,20 @@ static int iic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) struct ibm_iic_private* dev = (struct ibm_iic_private*)(i2c_get_adapdata(adap)); volatile struct iic_regs __iomem *iic = dev->vaddr; int i, ret = 0; - + DBG2("%d: iic_xfer, %d msg(s)\n", dev->idx, num); - + if (!num) return 0; - + /* Check the sanity of the passed messages. * Uhh, generic i2c layer is more suitable place for such code... */ if (unlikely(iic_invalid_address(&msgs[0]))){ - DBG("%d: invalid address 0x%03x (%d-bit)\n", dev->idx, + DBG("%d: invalid address 0x%03x (%d-bit)\n", dev->idx, msgs[0].addr, msgs[0].flags & I2C_M_TEN ? 10 : 7); return -EINVAL; - } + } for (i = 0; i < num; ++i){ if (unlikely(msgs[i].len <= 0)){ if (num == 1 && !msgs[0].len){ @@ -576,7 +576,7 @@ static int iic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) */ return iic_smbus_quick(dev, &msgs[0]); } - DBG("%d: invalid len %d in msg[%d]\n", dev->idx, + DBG("%d: invalid len %d in msg[%d]\n", dev->idx, msgs[i].len, i); return -EINVAL; } @@ -585,34 +585,34 @@ static int iic_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) return -EINVAL; } } - + /* Check bus state */ if (unlikely((in_8(&iic->extsts) & EXTSTS_BCS_MASK) != EXTSTS_BCS_FREE)){ DBG("%d: iic_xfer, bus is not free\n", dev->idx); - + /* Usually it means something serious has happend. * We *cannot* have unfinished previous transfer * so it doesn't make any sense to try to stop it. - * Probably we were not able to recover from the + * Probably we were not able to recover from the * previous error. * The only *reasonable* thing I can think of here * is soft reset. --ebs */ iic_dev_reset(dev); - + if ((in_8(&iic->extsts) & EXTSTS_BCS_MASK) != EXTSTS_BCS_FREE){ DBG("%d: iic_xfer, bus is still not free\n", dev->idx); return -EREMOTEIO; } - } + } else { /* Flush master data buffer (just in case) */ out_8(&iic->mdcntl, in_8(&iic->mdcntl) | MDCNTL_FMDB); } - + /* Load slave address */ iic_address(dev, &msgs[0]); - + /* Do real transfer */ for (i = 0; i < num && !ret; ++i) ret = iic_xfer_bytes(dev, &msgs[i], i < num - 1); @@ -648,7 +648,7 @@ static inline u8 iic_clckdiv(unsigned int opb) /* Convert to MHz */ opb /= 1000000; - + if (opb < 20 || opb > 150){ printk(KERN_CRIT "ibm-iic: invalid OPB clock frequency %u MHz\n", opb); @@ -666,7 +666,7 @@ static int __devinit iic_probe(struct ocp_device *ocp){ struct i2c_adapter* adap; struct ocp_func_iic_data* iic_data = ocp->def->additions; int ret; - + if (!iic_data) printk(KERN_WARNING"ibm-iic%d: missing additional data!\n", ocp->def->index); @@ -679,7 +679,7 @@ static int __devinit iic_probe(struct ocp_device *ocp){ dev->idx = ocp->def->index; ocp_set_drvdata(ocp, dev); - + if (!request_mem_region(ocp->def->paddr, sizeof(struct iic_regs), "ibm_iic")) { ret = -EBUSY; @@ -692,7 +692,7 @@ static int __devinit iic_probe(struct ocp_device *ocp){ ret = -ENXIO; goto fail2; } - + init_waitqueue_head(&dev->wq); dev->irq = iic_force_poll ? -1 : ocp->def->irq; @@ -702,29 +702,29 @@ static int __devinit iic_probe(struct ocp_device *ocp){ */ iic_interrupt_mode(dev, 0); if (request_irq(dev->irq, iic_handler, 0, "IBM IIC", dev)){ - printk(KERN_ERR "ibm-iic%d: request_irq %d failed\n", + printk(KERN_ERR "ibm-iic%d: request_irq %d failed\n", dev->idx, dev->irq); - /* Fallback to the polling mode */ + /* Fallback to the polling mode */ dev->irq = -1; } } - + if (dev->irq < 0) - printk(KERN_WARNING "ibm-iic%d: using polling mode\n", + printk(KERN_WARNING "ibm-iic%d: using polling mode\n", dev->idx); - + /* Board specific settings */ dev->fast_mode = iic_force_fast ? 1 : (iic_data ? iic_data->fast_mode : 0); - - /* clckdiv is the same for *all* IIC interfaces, + + /* clckdiv is the same for *all* IIC interfaces, * but I'd rather make a copy than introduce another global. --ebs */ dev->clckdiv = iic_clckdiv(ocp_sys_info.opb_bus_freq); DBG("%d: clckdiv = %d\n", dev->idx, dev->clckdiv); - + /* Initialize IIC interface */ iic_dev_init(dev); - + /* Register it with i2c layer */ adap = &dev->adap; adap->dev.parent = &ocp->dev; @@ -736,7 +736,6 @@ static int __devinit iic_probe(struct ocp_device *ocp){ adap->client_register = NULL; adap->client_unregister = NULL; adap->timeout = 1; - adap->retries = 1; /* * If "dev->idx" is negative we consider it as zero. @@ -750,24 +749,24 @@ static int __devinit iic_probe(struct ocp_device *ocp){ dev->idx); goto fail; } - + printk(KERN_INFO "ibm-iic%d: using %s mode\n", dev->idx, dev->fast_mode ? "fast (400 kHz)" : "standard (100 kHz)"); return 0; -fail: +fail: if (dev->irq >= 0){ iic_interrupt_mode(dev, 0); free_irq(dev->irq, dev); - } + } iounmap(dev->vaddr); -fail2: +fail2: release_mem_region(ocp->def->paddr, sizeof(struct iic_regs)); fail1: ocp_set_drvdata(ocp, NULL); - kfree(dev); + kfree(dev); return ret; } @@ -783,13 +782,13 @@ static void __devexit iic_remove(struct ocp_device *ocp) dev->idx); /* That's *very* bad, just shutdown IRQ ... */ if (dev->irq >= 0){ - iic_interrupt_mode(dev, 0); + iic_interrupt_mode(dev, 0); free_irq(dev->irq, dev); dev->irq = -1; } } else { if (dev->irq >= 0){ - iic_interrupt_mode(dev, 0); + iic_interrupt_mode(dev, 0); free_irq(dev->irq, dev); } iounmap(dev->vaddr); @@ -798,7 +797,7 @@ static void __devexit iic_remove(struct ocp_device *ocp) } } -static struct ocp_device_id ibm_iic_ids[] __devinitdata = +static struct ocp_device_id ibm_iic_ids[] __devinitdata = { { .vendor = OCP_VENDOR_IBM, .function = OCP_FUNC_IIC }, { .vendor = OCP_VENDOR_INVALID } diff --git a/drivers/i2c/busses/i2c-ibm_iic.h b/drivers/i2c/busses/i2c-ibm_iic.h index 59d7b437f7f..fdaa48292cb 100644 --- a/drivers/i2c/busses/i2c-ibm_iic.h +++ b/drivers/i2c/busses/i2c-ibm_iic.h @@ -2,11 +2,11 @@ * drivers/i2c/busses/i2c-ibm_iic.h * * Support for the IIC peripheral on IBM PPC 4xx - * + * * Copyright (c) 2003 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> @@ -22,7 +22,7 @@ #ifndef __I2C_IBM_IIC_H_ #define __I2C_IBM_IIC_H_ -#include <linux/i2c.h> +#include <linux/i2c.h> struct iic_regs { u16 mdbuf; @@ -58,7 +58,7 @@ struct ibm_iic_private { #define CNTL_TCT_MASK 0x30 #define CNTL_TCT_SHIFT 4 #define CNTL_RPST 0x08 -#define CNTL_CHT 0x04 +#define CNTL_CHT 0x04 #define CNTL_RW 0x02 #define CNTL_PT 0x01 diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c index c70146e4c2c..ab41400c883 100644 --- a/drivers/i2c/busses/i2c-iop3xx.c +++ b/drivers/i2c/busses/i2c-iop3xx.c @@ -490,7 +490,6 @@ iop3xx_i2c_probe(struct platform_device *pdev) * Default values...should these come in from board code? */ new_adapter->timeout = 100; - new_adapter->retries = 3; new_adapter->algo = &iop3xx_i2c_algo; init_waitqueue_head(&adapter_data->waitq); diff --git a/drivers/i2c/busses/i2c-ixp4xx.c b/drivers/i2c/busses/i2c-ixp4xx.c deleted file mode 100644 index 069ed7f3b39..00000000000 --- a/drivers/i2c/busses/i2c-ixp4xx.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * drivers/i2c/busses/i2c-ixp4xx.c - * - * Intel's IXP4xx XScale NPU chipsets (IXP420, 421, 422, 425) do not have - * an on board I2C controller but provide 16 GPIO pins that are often - * used to create an I2C bus. This driver provides an i2c_adapter - * interface that plugs in under algo_bit and drives the GPIO pins - * as instructed by the alogorithm driver. - * - * Author: Deepak Saxena <dsaxena@plexity.net> - * - * Copyright (c) 2003-2004 MontaVista Software Inc. - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - * - * NOTE: Since different platforms will use different GPIO pins for - * I2C, this driver uses an IXP4xx-specific platform_data - * pointer to pass the GPIO numbers to the driver. This - * allows us to support all the different IXP4xx platforms - * w/o having to put #ifdefs in this driver. - * - * See arch/arm/mach-ixp4xx/ixdp425.c for an example of building a - * device list and filling in the ixp4xx_i2c_pins data structure - * that is passed as the platform_data to this driver. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/module.h> -#include <linux/i2c.h> -#include <linux/i2c-algo-bit.h> - -#include <asm/hardware.h> /* Pick up IXP4xx-specific bits */ - -static inline int ixp4xx_scl_pin(void *data) -{ - return ((struct ixp4xx_i2c_pins*)data)->scl_pin; -} - -static inline int ixp4xx_sda_pin(void *data) -{ - return ((struct ixp4xx_i2c_pins*)data)->sda_pin; -} - -static void ixp4xx_bit_setscl(void *data, int val) -{ - gpio_line_set(ixp4xx_scl_pin(data), 0); - gpio_line_config(ixp4xx_scl_pin(data), - val ? IXP4XX_GPIO_IN : IXP4XX_GPIO_OUT ); -} - -static void ixp4xx_bit_setsda(void *data, int val) -{ - gpio_line_set(ixp4xx_sda_pin(data), 0); - gpio_line_config(ixp4xx_sda_pin(data), - val ? IXP4XX_GPIO_IN : IXP4XX_GPIO_OUT ); -} - -static int ixp4xx_bit_getscl(void *data) -{ - int scl; - - gpio_line_config(ixp4xx_scl_pin(data), IXP4XX_GPIO_IN ); - gpio_line_get(ixp4xx_scl_pin(data), &scl); - - return scl; -} - -static int ixp4xx_bit_getsda(void *data) -{ - int sda; - - gpio_line_config(ixp4xx_sda_pin(data), IXP4XX_GPIO_IN ); - gpio_line_get(ixp4xx_sda_pin(data), &sda); - - return sda; -} - -struct ixp4xx_i2c_data { - struct ixp4xx_i2c_pins *gpio_pins; - struct i2c_adapter adapter; - struct i2c_algo_bit_data algo_data; -}; - -static int ixp4xx_i2c_remove(struct platform_device *plat_dev) -{ - struct ixp4xx_i2c_data *drv_data = platform_get_drvdata(plat_dev); - - platform_set_drvdata(plat_dev, NULL); - - i2c_del_adapter(&drv_data->adapter); - - kfree(drv_data); - - return 0; -} - -static int ixp4xx_i2c_probe(struct platform_device *plat_dev) -{ - int err; - struct ixp4xx_i2c_pins *gpio = plat_dev->dev.platform_data; - struct ixp4xx_i2c_data *drv_data = - kzalloc(sizeof(struct ixp4xx_i2c_data), GFP_KERNEL); - - if(!drv_data) - return -ENOMEM; - - drv_data->gpio_pins = gpio; - - /* - * We could make a lot of these structures static, but - * certain platforms may have multiple GPIO-based I2C - * buses for various device domains, so we need per-device - * algo_data->data. - */ - drv_data->algo_data.data = gpio; - drv_data->algo_data.setsda = ixp4xx_bit_setsda; - drv_data->algo_data.setscl = ixp4xx_bit_setscl; - drv_data->algo_data.getsda = ixp4xx_bit_getsda; - drv_data->algo_data.getscl = ixp4xx_bit_getscl; - drv_data->algo_data.udelay = 10; - drv_data->algo_data.timeout = 100; - - drv_data->adapter.id = I2C_HW_B_IXP4XX; - drv_data->adapter.class = I2C_CLASS_HWMON; - strlcpy(drv_data->adapter.name, plat_dev->dev.driver->name, - sizeof(drv_data->adapter.name)); - drv_data->adapter.algo_data = &drv_data->algo_data; - - drv_data->adapter.dev.parent = &plat_dev->dev; - - gpio_line_config(gpio->scl_pin, IXP4XX_GPIO_IN); - gpio_line_config(gpio->sda_pin, IXP4XX_GPIO_IN); - gpio_line_set(gpio->scl_pin, 0); - gpio_line_set(gpio->sda_pin, 0); - - err = i2c_bit_add_bus(&drv_data->adapter); - if (err) { - printk(KERN_ERR "ERROR: Could not install %s\n", plat_dev->dev.bus_id); - - kfree(drv_data); - return err; - } - - platform_set_drvdata(plat_dev, drv_data); - - return 0; -} - -static struct platform_driver ixp4xx_i2c_driver = { - .probe = ixp4xx_i2c_probe, - .remove = ixp4xx_i2c_remove, - .driver = { - .name = "IXP4XX-I2C", - .owner = THIS_MODULE, - }, -}; - -static int __init ixp4xx_i2c_init(void) -{ - return platform_driver_register(&ixp4xx_i2c_driver); -} - -static void __exit ixp4xx_i2c_exit(void) -{ - platform_driver_unregister(&ixp4xx_i2c_driver); -} - -module_init(ixp4xx_i2c_init); -module_exit(ixp4xx_i2c_exit); - -MODULE_DESCRIPTION("GPIO-based I2C adapter for IXP4xx systems"); -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Deepak Saxena <dsaxena@plexity.net>"); - diff --git a/drivers/i2c/busses/i2c-mpc.c b/drivers/i2c/busses/i2c-mpc.c index d8de4ac88b7..bbe787b243b 100644 --- a/drivers/i2c/busses/i2c-mpc.c +++ b/drivers/i2c/busses/i2c-mpc.c @@ -180,7 +180,7 @@ static void mpc_i2c_stop(struct mpc_i2c *i2c) static int mpc_write(struct mpc_i2c *i2c, int target, const u8 * data, int length, int restart) { - int i; + int i, result; unsigned timeout = i2c->adap.timeout; u32 flags = restart ? CCR_RSTA : 0; @@ -192,15 +192,17 @@ static int mpc_write(struct mpc_i2c *i2c, int target, /* Write target byte */ writeb((target << 1), i2c->base + MPC_I2C_DR); - if (i2c_wait(i2c, timeout, 1) < 0) - return -1; + result = i2c_wait(i2c, timeout, 1); + if (result < 0) + return result; for (i = 0; i < length; i++) { /* Write data byte */ writeb(data[i], i2c->base + MPC_I2C_DR); - if (i2c_wait(i2c, timeout, 1) < 0) - return -1; + result = i2c_wait(i2c, timeout, 1); + if (result < 0) + return result; } return 0; @@ -210,7 +212,7 @@ static int mpc_read(struct mpc_i2c *i2c, int target, u8 * data, int length, int restart) { unsigned timeout = i2c->adap.timeout; - int i; + int i, result; u32 flags = restart ? CCR_RSTA : 0; /* Start with MEN */ @@ -221,8 +223,9 @@ static int mpc_read(struct mpc_i2c *i2c, int target, /* Write target address byte - this time with the read flag set */ writeb((target << 1) | 1, i2c->base + MPC_I2C_DR); - if (i2c_wait(i2c, timeout, 1) < 0) - return -1; + result = i2c_wait(i2c, timeout, 1); + if (result < 0) + return result; if (length) { if (length == 1) @@ -234,8 +237,9 @@ static int mpc_read(struct mpc_i2c *i2c, int target, } for (i = 0; i < length; i++) { - if (i2c_wait(i2c, timeout, 0) < 0) - return -1; + result = i2c_wait(i2c, timeout, 0); + if (result < 0) + return result; /* Generate txack on next to last byte */ if (i == length - 2) @@ -309,7 +313,6 @@ static struct i2c_adapter mpc_ops = { .algo = &mpc_algo, .class = I2C_CLASS_HWMON, .timeout = 1, - .retries = 1 }; static int fsl_i2c_probe(struct platform_device *pdev) @@ -321,9 +324,9 @@ static int fsl_i2c_probe(struct platform_device *pdev) pdata = (struct fsl_i2c_platform_data *) pdev->dev.platform_data; - if (!(i2c = kzalloc(sizeof(*i2c), GFP_KERNEL))) { + i2c = kzalloc(sizeof(*i2c), GFP_KERNEL); + if (!i2c) return -ENOMEM; - } i2c->irq = platform_get_irq(pdev, 0); if (i2c->irq < 0) { diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index 1bf590c7416..3dac920e53e 100644 --- a/drivers/i2c/busses/i2c-nforce2.c +++ b/drivers/i2c/busses/i2c-nforce2.c @@ -351,6 +351,7 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_ pci_set_drvdata(dev, smbuses); switch(dev->device) { + case PCI_DEVICE_ID_NVIDIA_NFORCE2_SMBUS: case PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SMBUS: case PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SMBUS: smbuses[0].blockops = 1; diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index f2552b19ea6..da6639707ea 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -362,8 +362,6 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num) omap_i2c_enable_clocks(dev); - /* REVISIT: initialize and use adap->retries. This is an optional - * feature */ if ((r = omap_i2c_wait_for_bb(dev)) < 0) goto out; diff --git a/drivers/i2c/busses/i2c-pasemi.c b/drivers/i2c/busses/i2c-pasemi.c index ca18e0be490..1603c81e39d 100644 --- a/drivers/i2c/busses/i2c-pasemi.c +++ b/drivers/i2c/busses/i2c-pasemi.c @@ -368,6 +368,7 @@ static int __devinit pasemi_smb_probe(struct pci_dev *dev, smbus->adapter.class = I2C_CLASS_HWMON; smbus->adapter.algo = &smbus_algorithm; smbus->adapter.algo_data = smbus; + smbus->adapter.nr = PCI_FUNC(dev->devfn); /* set up the sysfs linkage to our parent device */ smbus->adapter.dev.parent = &dev->dev; @@ -375,7 +376,7 @@ static int __devinit pasemi_smb_probe(struct pci_dev *dev, reg_write(smbus, REG_CTL, (CTL_MTR | CTL_MRR | (CLK_100K_DIV & CTL_CLK_M))); - error = i2c_add_adapter(&smbus->adapter); + error = i2c_add_numbered_adapter(&smbus->adapter); if (error) goto out_release_region; diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index 167e4137ee2..9bbe96cef71 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -121,10 +121,6 @@ static int __devinit piix4_setup(struct pci_dev *PIIX4_dev, { unsigned char temp; - /* match up the function */ - if (PCI_FUNC(PIIX4_dev->devfn) != id->driver_data) - return -ENODEV; - dev_info(&PIIX4_dev->dev, "Found %s device\n", pci_name(PIIX4_dev)); /* Don't access SMBus on IBM systems which get corrupted eeproms */ @@ -389,28 +385,21 @@ static struct i2c_adapter piix4_adapter = { }; static struct pci_device_id piix4_ids[] = { - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3), - .driver_data = 3 }, - { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP200_SMBUS), - .driver_data = 0 }, - { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP300_SMBUS), - .driver_data = 0 }, - { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS), - .driver_data = 0 }, - { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS), - .driver_data = 0 }, - { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_OSB4), - .driver_data = 0 }, - { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5), - .driver_data = 0 }, - { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB6), - .driver_data = 0 }, - { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB), - .driver_data = 0 }, - { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3), - .driver_data = 3 }, - { PCI_DEVICE(PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_3), - .driver_data = 0 }, + { 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) }, + { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP200_SMBUS) }, + { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP300_SMBUS) }, + { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS) }, + { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS) }, + { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, + PCI_DEVICE_ID_SERVERWORKS_OSB4) }, + { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, + PCI_DEVICE_ID_SERVERWORKS_CSB5) }, + { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, + PCI_DEVICE_ID_SERVERWORKS_CSB6) }, + { PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, + PCI_DEVICE_ID_SERVERWORKS_HT1000SB) }, { 0, } }; diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c index 6426a61f8d4..2598d29fd7a 100644 --- a/drivers/i2c/busses/i2c-pxa.c +++ b/drivers/i2c/busses/i2c-pxa.c @@ -65,6 +65,7 @@ struct pxa_i2c { unsigned long iosize; int irq; + int use_pio; }; #define _IBMR(i2c) ((i2c)->reg_base + 0) @@ -163,6 +164,7 @@ static void i2c_pxa_show_state(struct pxa_i2c *i2c, int lno, const char *fname) #define eedbg(lvl, x...) do { if ((lvl) < 1) { printk(KERN_DEBUG "" x); } } while(0) static void i2c_pxa_master_complete(struct pxa_i2c *i2c, int ret); +static irqreturn_t i2c_pxa_handler(int this_irq, void *dev_id); static void i2c_pxa_scream_blue_murder(struct pxa_i2c *i2c, const char *why) { @@ -554,6 +556,71 @@ static inline void i2c_pxa_stop_message(struct pxa_i2c *i2c) writel(icr, _ICR(i2c)); } +static int i2c_pxa_pio_set_master(struct pxa_i2c *i2c) +{ + /* make timeout the same as for interrupt based functions */ + long timeout = 2 * DEF_TIMEOUT; + + /* + * Wait for the bus to become free. + */ + while (timeout-- && readl(_ISR(i2c)) & (ISR_IBB | ISR_UB)) { + udelay(1000); + show_state(i2c); + } + + if (timeout <= 0) { + show_state(i2c); + dev_err(&i2c->adap.dev, + "i2c_pxa: timeout waiting for bus free\n"); + return I2C_RETRY; + } + + /* + * Set master mode. + */ + writel(readl(_ICR(i2c)) | ICR_SCLE, _ICR(i2c)); + + return 0; +} + +static int i2c_pxa_do_pio_xfer(struct pxa_i2c *i2c, + struct i2c_msg *msg, int num) +{ + unsigned long timeout = 500000; /* 5 seconds */ + int ret = 0; + + ret = i2c_pxa_pio_set_master(i2c); + if (ret) + goto out; + + i2c->msg = msg; + i2c->msg_num = num; + i2c->msg_idx = 0; + i2c->msg_ptr = 0; + i2c->irqlogidx = 0; + + i2c_pxa_start_message(i2c); + + while (timeout-- && i2c->msg_num > 0) { + i2c_pxa_handler(0, i2c); + udelay(10); + } + + i2c_pxa_stop_message(i2c); + + /* + * We place the return code in i2c->msg_idx. + */ + ret = i2c->msg_idx; + +out: + if (timeout == 0) + i2c_pxa_scream_blue_murder(i2c, "timeout"); + + return ret; +} + /* * We are protected by the adapter bus mutex. */ @@ -610,6 +677,35 @@ static int i2c_pxa_do_xfer(struct pxa_i2c *i2c, struct i2c_msg *msg, int num) return ret; } +static int i2c_pxa_pio_xfer(struct i2c_adapter *adap, + struct i2c_msg msgs[], int num) +{ + struct pxa_i2c *i2c = adap->algo_data; + int ret, i; + + /* If the I2C controller is disabled we need to reset it + (probably due to a suspend/resume destroying state). We do + this here as we can then avoid worrying about resuming the + controller before its users. */ + if (!(readl(_ICR(i2c)) & ICR_IUE)) + i2c_pxa_reset(i2c); + + for (i = adap->retries; i >= 0; i--) { + ret = i2c_pxa_do_pio_xfer(i2c, msgs, num); + if (ret != I2C_RETRY) + goto out; + + if (i2c_debug) + dev_dbg(&adap->dev, "Retrying transmission\n"); + udelay(100); + } + i2c_pxa_scream_blue_murder(i2c, "exhausted retries"); + ret = -EREMOTEIO; + out: + i2c_pxa_set_slave(i2c, ret); + return ret; +} + /* * i2c_pxa_master_complete - complete the message and wake up. */ @@ -621,7 +717,8 @@ static void i2c_pxa_master_complete(struct pxa_i2c *i2c, int ret) i2c->msg_num = 0; if (ret) i2c->msg_idx = ret; - wake_up(&i2c->wait); + if (!i2c->use_pio) + wake_up(&i2c->wait); } static void i2c_pxa_irq_txempty(struct pxa_i2c *i2c, u32 isr) @@ -840,6 +937,37 @@ static const struct i2c_algorithm i2c_pxa_algorithm = { .functionality = i2c_pxa_functionality, }; +static const struct i2c_algorithm i2c_pxa_pio_algorithm = { + .master_xfer = i2c_pxa_pio_xfer, + .functionality = i2c_pxa_functionality, +}; + +static void i2c_pxa_enable(struct platform_device *dev) +{ + if (cpu_is_pxa27x()) { + switch (dev->id) { + case 0: + pxa_gpio_mode(GPIO117_I2CSCL_MD); + pxa_gpio_mode(GPIO118_I2CSDA_MD); + break; + case 1: + local_irq_disable(); + PCFR |= PCFR_PI2CEN; + local_irq_enable(); + break; + } + } +} + +static void i2c_pxa_disable(struct platform_device *dev) +{ + if (cpu_is_pxa27x() && dev->id == 1) { + local_irq_disable(); + PCFR &= ~PCFR_PI2CEN; + local_irq_enable(); + } +} + #define res_len(r) ((r)->end - (r)->start + 1) static int i2c_pxa_probe(struct platform_device *dev) { @@ -864,7 +992,6 @@ static int i2c_pxa_probe(struct platform_device *dev) } i2c->adap.owner = THIS_MODULE; - i2c->adap.algo = &i2c_pxa_algorithm; i2c->adap.retries = 5; spin_lock_init(&i2c->lock); @@ -899,34 +1026,28 @@ static int i2c_pxa_probe(struct platform_device *dev) #endif clk_enable(i2c->clk); -#ifdef CONFIG_PXA27x - switch (dev->id) { - case 0: - pxa_gpio_mode(GPIO117_I2CSCL_MD); - pxa_gpio_mode(GPIO118_I2CSDA_MD); - break; - case 1: - local_irq_disable(); - PCFR |= PCFR_PI2CEN; - local_irq_enable(); - } -#endif + i2c_pxa_enable(dev); - ret = request_irq(irq, i2c_pxa_handler, IRQF_DISABLED, - i2c->adap.name, i2c); - if (ret) - goto ereqirq; + if (plat) { + i2c->adap.class = plat->class; + i2c->use_pio = plat->use_pio; + } + if (i2c->use_pio) { + i2c->adap.algo = &i2c_pxa_pio_algorithm; + } else { + i2c->adap.algo = &i2c_pxa_algorithm; + ret = request_irq(irq, i2c_pxa_handler, IRQF_DISABLED, + i2c->adap.name, i2c); + if (ret) + goto ereqirq; + } i2c_pxa_reset(i2c); i2c->adap.algo_data = i2c; i2c->adap.dev.parent = &dev->dev; - if (plat) { - i2c->adap.class = plat->class; - } - /* * If "dev->id" is negative we consider it as zero. * The reason to do so is to avoid sysfs names that only make @@ -952,17 +1073,11 @@ static int i2c_pxa_probe(struct platform_device *dev) return 0; eadapt: - free_irq(irq, i2c); + if (!i2c->use_pio) + free_irq(irq, i2c); ereqirq: clk_disable(i2c->clk); - -#ifdef CONFIG_PXA27x - if (dev->id == 1) { - local_irq_disable(); - PCFR &= ~PCFR_PI2CEN; - local_irq_enable(); - } -#endif + i2c_pxa_disable(dev); eremap: clk_put(i2c->clk); eclk: @@ -979,18 +1094,12 @@ static int i2c_pxa_remove(struct platform_device *dev) platform_set_drvdata(dev, NULL); i2c_del_adapter(&i2c->adap); - free_irq(i2c->irq, i2c); + if (!i2c->use_pio) + free_irq(i2c->irq, i2c); clk_disable(i2c->clk); clk_put(i2c->clk); - -#ifdef CONFIG_PXA27x - if (dev->id == 1) { - local_irq_disable(); - PCFR &= ~PCFR_PI2CEN; - local_irq_enable(); - } -#endif + i2c_pxa_disable(dev); release_mem_region(i2c->iobase, i2c->iosize); kfree(i2c); diff --git a/drivers/i2c/busses/i2c-sibyte.c b/drivers/i2c/busses/i2c-sibyte.c index 503a134ec80..8fbbdb4c2f3 100644 --- a/drivers/i2c/busses/i2c-sibyte.c +++ b/drivers/i2c/busses/i2c-sibyte.c @@ -36,14 +36,6 @@ struct i2c_algo_sibyte_data { /* ----- global defines ----------------------------------------------- */ #define SMB_CSR(a,r) ((long)(a->reg_base + r)) -/* ----- global variables --------------------------------------------- */ - -/* module parameters: - */ -static int bit_scan; /* have a look at what's hanging 'round */ -module_param(bit_scan, int, 0); -MODULE_PARM_DESC(bit_scan, "Scan for active chips on the bus"); - static int smbus_xfer(struct i2c_adapter *i2c_adap, u16 addr, unsigned short flags, char read_write, @@ -140,9 +132,8 @@ static const struct i2c_algorithm i2c_sibyte_algo = { /* * registering functions to load algorithms at runtime */ -int i2c_sibyte_add_bus(struct i2c_adapter *i2c_adap, int speed) +int __init i2c_sibyte_add_bus(struct i2c_adapter *i2c_adap, int speed) { - int i; struct i2c_algo_sibyte_data *adap = i2c_adap->algo_data; /* register new adapter to i2c module... */ @@ -152,24 +143,6 @@ int i2c_sibyte_add_bus(struct i2c_adapter *i2c_adap, int speed) csr_out32(speed, SMB_CSR(adap,R_SMB_FREQ)); csr_out32(0, SMB_CSR(adap,R_SMB_CONTROL)); - /* scan bus */ - if (bit_scan) { - union i2c_smbus_data data; - int rc; - printk(KERN_INFO " i2c-algo-sibyte.o: scanning bus %s.\n", - i2c_adap->name); - for (i = 0x00; i < 0x7f; i++) { - /* XXXKW is this a realistic probe? */ - rc = smbus_xfer(i2c_adap, i, 0, I2C_SMBUS_READ, 0, - I2C_SMBUS_BYTE_DATA, &data); - if (!rc) { - printk("(%02x)",i); - } else - printk("."); - } - printk("\n"); - } - return i2c_add_adapter(i2c_adap); } diff --git a/drivers/i2c/busses/i2c-stub.c b/drivers/i2c/busses/i2c-stub.c index 84df29da1dd..c2a9f8c94f5 100644 --- a/drivers/i2c/busses/i2c-stub.c +++ b/drivers/i2c/busses/i2c-stub.c @@ -1,8 +1,8 @@ /* - i2c-stub.c - Part of lm_sensors, Linux kernel modules for hardware - monitoring + i2c-stub.c - I2C/SMBus chip emulator Copyright (c) 2004 Mark M. Hoffman <mhoffman@lightlink.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 @@ -37,8 +37,8 @@ MODULE_PARM_DESC(chip_addr, struct stub_chip { u8 pointer; - u8 bytes[256]; - u16 words[256]; + u16 words[256]; /* Byte operations use the LSB as per SMBus + specification */ }; static struct stub_chip *stub_chips; @@ -75,7 +75,7 @@ static s32 stub_xfer(struct i2c_adapter * adap, u16 addr, unsigned short flags, "wrote 0x%02x.\n", addr, command); } else { - data->byte = chip->bytes[chip->pointer++]; + data->byte = chip->words[chip->pointer++] & 0xff; dev_dbg(&adap->dev, "smbus byte - addr 0x%02x, " "read 0x%02x.\n", addr, data->byte); @@ -86,12 +86,13 @@ static s32 stub_xfer(struct i2c_adapter * adap, u16 addr, unsigned short flags, case I2C_SMBUS_BYTE_DATA: if (read_write == I2C_SMBUS_WRITE) { - chip->bytes[command] = data->byte; + chip->words[command] &= 0xff00; + chip->words[command] |= data->byte; dev_dbg(&adap->dev, "smbus byte data - addr 0x%02x, " "wrote 0x%02x at 0x%02x.\n", addr, data->byte, command); } else { - data->byte = chip->bytes[command]; + data->byte = chip->words[command] & 0xff; dev_dbg(&adap->dev, "smbus byte data - addr 0x%02x, " "read 0x%02x at 0x%02x.\n", addr, data->byte, command); diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c index c9ce77f13c0..77b13d027f8 100644 --- a/drivers/i2c/busses/i2c-viapro.c +++ b/drivers/i2c/busses/i2c-viapro.c @@ -4,7 +4,7 @@ Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl>, Philip Edelbrock <phil@netroedge.com>, Kyösti Mälkki <kmalkki@cc.hut.fi>, Mark D. Studebaker <mdsxyz123@yahoo.com> - Copyright (C) 2005 - 2007 Jean Delvare <khali@linux-fr.org> + Copyright (C) 2005 - 2008 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 @@ -35,6 +35,7 @@ VT8235 0x3177 yes VT8237R 0x3227 yes VT8237A 0x3337 yes + VT8237S 0x3372 yes VT8251 0x3287 yes CX700 0x8324 yes @@ -318,6 +319,10 @@ static int __devinit vt596_probe(struct pci_dev *pdev, unsigned char temp; int error = -ENODEV; + /* driver_data might come from user-space, so check it */ + if (id->driver_data & 1 || id->driver_data > 0xff) + return -EINVAL; + /* Determine the address of the SMBus areas */ if (force_addr) { vt596_smba = force_addr & 0xfff0; @@ -389,6 +394,7 @@ found: case PCI_DEVICE_ID_VIA_8251: case PCI_DEVICE_ID_VIA_8237: case PCI_DEVICE_ID_VIA_8237A: + case PCI_DEVICE_ID_VIA_8237S: case PCI_DEVICE_ID_VIA_8235: case PCI_DEVICE_ID_VIA_8233A: case PCI_DEVICE_ID_VIA_8233_0: @@ -440,6 +446,8 @@ static struct pci_device_id vt596_ids[] = { .driver_data = SMBBA3 }, { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A), .driver_data = SMBBA3 }, + { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237S), + .driver_data = SMBBA3 }, { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231_4), .driver_data = SMBBA1 }, { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8251), @@ -455,6 +463,7 @@ static struct pci_driver vt596_driver = { .name = "vt596_smbus", .id_table = vt596_ids, .probe = vt596_probe, + .dynids.use_driver_data = 1, }; static int __init i2c_vt596_init(void) |