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Diffstat (limited to 'ANDROID_3.4.5/drivers/i2c/busses/i2c-nforce2.c')
-rw-r--r--ANDROID_3.4.5/drivers/i2c/busses/i2c-nforce2.c468
1 files changed, 0 insertions, 468 deletions
diff --git a/ANDROID_3.4.5/drivers/i2c/busses/i2c-nforce2.c b/ANDROID_3.4.5/drivers/i2c/busses/i2c-nforce2.c
deleted file mode 100644
index 43a96a12..00000000
--- a/ANDROID_3.4.5/drivers/i2c/busses/i2c-nforce2.c
+++ /dev/null
@@ -1,468 +0,0 @@
-/*
- SMBus driver for nVidia nForce2 MCP
-
- Added nForce3 Pro 150 Thomas Leibold <thomas@plx.com>,
- Ported to 2.5 Patrick Dreker <patrick@dreker.de>,
- Copyright (c) 2003 Hans-Frieder Vogt <hfvogt@arcor.de>,
- Based on
- SMBus 2.0 driver for AMD-8111 IO-Hub
- Copyright (c) 2002 Vojtech Pavlik
-
- 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.
-*/
-
-/*
- SUPPORTED DEVICES PCI ID
- nForce2 MCP 0064
- nForce2 Ultra 400 MCP 0084
- nForce3 Pro150 MCP 00D4
- nForce3 250Gb MCP 00E4
- nForce4 MCP 0052
- nForce4 MCP-04 0034
- nForce MCP51 0264
- nForce MCP55 0368
- nForce MCP61 03EB
- nForce MCP65 0446
- nForce MCP67 0542
- nForce MCP73 07D8
- nForce MCP78S 0752
- nForce MCP79 0AA2
-
- This driver supports the 2 SMBuses that are included in the MCP of the
- nForce2/3/4/5xx chipsets.
-*/
-
-/* Note: we assume there can only be one nForce2, with two SMBus interfaces */
-
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/stddef.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/i2c.h>
-#include <linux/delay.h>
-#include <linux/dmi.h>
-#include <linux/acpi.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR ("Hans-Frieder Vogt <hfvogt@gmx.net>");
-MODULE_DESCRIPTION("nForce2/3/4/5xx SMBus driver");
-
-
-struct nforce2_smbus {
- struct i2c_adapter adapter;
- int base;
- int size;
- int blockops;
- int can_abort;
-};
-
-
-/*
- * nVidia nForce2 SMBus control register definitions
- * (Newer incarnations use standard BARs 4 and 5 instead)
- */
-#define NFORCE_PCI_SMB1 0x50
-#define NFORCE_PCI_SMB2 0x54
-
-
-/*
- * ACPI 2.0 chapter 13 SMBus 2.0 EC register model
- */
-#define NVIDIA_SMB_PRTCL (smbus->base + 0x00) /* protocol, PEC */
-#define NVIDIA_SMB_STS (smbus->base + 0x01) /* status */
-#define NVIDIA_SMB_ADDR (smbus->base + 0x02) /* address */
-#define NVIDIA_SMB_CMD (smbus->base + 0x03) /* command */
-#define NVIDIA_SMB_DATA (smbus->base + 0x04) /* 32 data registers */
-#define NVIDIA_SMB_BCNT (smbus->base + 0x24) /* number of data
- bytes */
-#define NVIDIA_SMB_STATUS_ABRT (smbus->base + 0x3c) /* register used to
- check the status of
- the abort command */
-#define NVIDIA_SMB_CTRL (smbus->base + 0x3e) /* control register */
-
-#define NVIDIA_SMB_STATUS_ABRT_STS 0x01 /* Bit to notify that
- abort succeeded */
-#define NVIDIA_SMB_CTRL_ABORT 0x20
-#define NVIDIA_SMB_STS_DONE 0x80
-#define NVIDIA_SMB_STS_ALRM 0x40
-#define NVIDIA_SMB_STS_RES 0x20
-#define NVIDIA_SMB_STS_STATUS 0x1f
-
-#define NVIDIA_SMB_PRTCL_WRITE 0x00
-#define NVIDIA_SMB_PRTCL_READ 0x01
-#define NVIDIA_SMB_PRTCL_QUICK 0x02
-#define NVIDIA_SMB_PRTCL_BYTE 0x04
-#define NVIDIA_SMB_PRTCL_BYTE_DATA 0x06
-#define NVIDIA_SMB_PRTCL_WORD_DATA 0x08
-#define NVIDIA_SMB_PRTCL_BLOCK_DATA 0x0a
-#define NVIDIA_SMB_PRTCL_PEC 0x80
-
-/* 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;
-
-/* For multiplexing support, we need a global reference to the 1st
- SMBus channel */
-#if defined CONFIG_I2C_NFORCE2_S4985 || defined CONFIG_I2C_NFORCE2_S4985_MODULE
-struct i2c_adapter *nforce2_smbus;
-EXPORT_SYMBOL_GPL(nforce2_smbus);
-
-static void nforce2_set_reference(struct i2c_adapter *adap)
-{
- nforce2_smbus = adap;
-}
-#else
-static inline void nforce2_set_reference(struct i2c_adapter *adap) { }
-#endif
-
-static void nforce2_abort(struct i2c_adapter *adap)
-{
- struct nforce2_smbus *smbus = adap->algo_data;
- int timeout = 0;
- unsigned char temp;
-
- dev_dbg(&adap->dev, "Aborting current transaction\n");
-
- outb_p(NVIDIA_SMB_CTRL_ABORT, NVIDIA_SMB_CTRL);
- do {
- msleep(1);
- temp = inb_p(NVIDIA_SMB_STATUS_ABRT);
- } while (!(temp & NVIDIA_SMB_STATUS_ABRT_STS) &&
- (timeout++ < MAX_TIMEOUT));
- if (!(temp & NVIDIA_SMB_STATUS_ABRT_STS))
- dev_err(&adap->dev, "Can't reset the smbus\n");
- outb_p(NVIDIA_SMB_STATUS_ABRT_STS, NVIDIA_SMB_STATUS_ABRT);
-}
-
-static int nforce2_check_status(struct i2c_adapter *adap)
-{
- struct nforce2_smbus *smbus = adap->algo_data;
- int timeout = 0;
- unsigned char temp;
-
- do {
- msleep(1);
- temp = inb_p(NVIDIA_SMB_STS);
- } while ((!temp) && (timeout++ < MAX_TIMEOUT));
-
- if (timeout > MAX_TIMEOUT) {
- dev_dbg(&adap->dev, "SMBus Timeout!\n");
- if (smbus->can_abort)
- nforce2_abort(adap);
- return -ETIMEDOUT;
- }
- if (!(temp & NVIDIA_SMB_STS_DONE) || (temp & NVIDIA_SMB_STS_STATUS)) {
- dev_dbg(&adap->dev, "Transaction failed (0x%02x)!\n", temp);
- return -EIO;
- }
- return 0;
-}
-
-/* Return negative errno on error */
-static s32 nforce2_access(struct i2c_adapter * adap, u16 addr,
- unsigned short flags, char read_write,
- u8 command, int size, union i2c_smbus_data * data)
-{
- struct nforce2_smbus *smbus = adap->algo_data;
- unsigned char protocol, pec;
- u8 len;
- int i, status;
-
- protocol = (read_write == I2C_SMBUS_READ) ? NVIDIA_SMB_PRTCL_READ :
- NVIDIA_SMB_PRTCL_WRITE;
- pec = (flags & I2C_CLIENT_PEC) ? NVIDIA_SMB_PRTCL_PEC : 0;
-
- switch (size) {
-
- case I2C_SMBUS_QUICK:
- protocol |= NVIDIA_SMB_PRTCL_QUICK;
- read_write = I2C_SMBUS_WRITE;
- break;
-
- case I2C_SMBUS_BYTE:
- if (read_write == I2C_SMBUS_WRITE)
- outb_p(command, NVIDIA_SMB_CMD);
- protocol |= NVIDIA_SMB_PRTCL_BYTE;
- break;
-
- case I2C_SMBUS_BYTE_DATA:
- outb_p(command, NVIDIA_SMB_CMD);
- if (read_write == I2C_SMBUS_WRITE)
- outb_p(data->byte, NVIDIA_SMB_DATA);
- protocol |= NVIDIA_SMB_PRTCL_BYTE_DATA;
- break;
-
- case I2C_SMBUS_WORD_DATA:
- outb_p(command, NVIDIA_SMB_CMD);
- if (read_write == I2C_SMBUS_WRITE) {
- outb_p(data->word, NVIDIA_SMB_DATA);
- outb_p(data->word >> 8, NVIDIA_SMB_DATA+1);
- }
- protocol |= NVIDIA_SMB_PRTCL_WORD_DATA | pec;
- break;
-
- case I2C_SMBUS_BLOCK_DATA:
- outb_p(command, NVIDIA_SMB_CMD);
- if (read_write == I2C_SMBUS_WRITE) {
- len = data->block[0];
- if ((len == 0) || (len > I2C_SMBUS_BLOCK_MAX)) {
- dev_err(&adap->dev,
- "Transaction failed "
- "(requested block size: %d)\n",
- len);
- return -EINVAL;
- }
- outb_p(len, NVIDIA_SMB_BCNT);
- for (i = 0; i < I2C_SMBUS_BLOCK_MAX; i++)
- outb_p(data->block[i + 1],
- NVIDIA_SMB_DATA+i);
- }
- protocol |= NVIDIA_SMB_PRTCL_BLOCK_DATA | pec;
- break;
-
- default:
- dev_err(&adap->dev, "Unsupported transaction %d\n", size);
- return -EOPNOTSUPP;
- }
-
- outb_p((addr & 0x7f) << 1, NVIDIA_SMB_ADDR);
- outb_p(protocol, NVIDIA_SMB_PRTCL);
-
- status = nforce2_check_status(adap);
- if (status)
- return status;
-
- if (read_write == I2C_SMBUS_WRITE)
- return 0;
-
- switch (size) {
-
- case I2C_SMBUS_BYTE:
- case I2C_SMBUS_BYTE_DATA:
- data->byte = inb_p(NVIDIA_SMB_DATA);
- break;
-
- case I2C_SMBUS_WORD_DATA:
- data->word = inb_p(NVIDIA_SMB_DATA) | (inb_p(NVIDIA_SMB_DATA+1) << 8);
- break;
-
- case I2C_SMBUS_BLOCK_DATA:
- len = inb_p(NVIDIA_SMB_BCNT);
- if ((len <= 0) || (len > I2C_SMBUS_BLOCK_MAX)) {
- dev_err(&adap->dev, "Transaction failed "
- "(received block size: 0x%02x)\n",
- len);
- return -EPROTO;
- }
- for (i = 0; i < len; i++)
- data->block[i+1] = inb_p(NVIDIA_SMB_DATA + i);
- data->block[0] = len;
- break;
- }
-
- return 0;
-}
-
-
-static u32 nforce2_func(struct i2c_adapter *adapter)
-{
- /* other functionality might be possible, but is not tested */
- return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
- I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
- I2C_FUNC_SMBUS_PEC |
- (((struct nforce2_smbus*)adapter->algo_data)->blockops ?
- I2C_FUNC_SMBUS_BLOCK_DATA : 0);
-}
-
-static struct i2c_algorithm smbus_algorithm = {
- .smbus_xfer = nforce2_access,
- .functionality = nforce2_func,
-};
-
-
-static DEFINE_PCI_DEVICE_TABLE(nforce2_ids) = {
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE2S_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE4_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP67_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP78S_SMBUS) },
- { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP79_SMBUS) },
- { 0 }
-};
-
-MODULE_DEVICE_TABLE (pci, nforce2_ids);
-
-
-static int __devinit nforce2_probe_smb (struct pci_dev *dev, int bar,
- int alt_reg, struct nforce2_smbus *smbus, const char *name)
-{
- int error;
-
- smbus->base = pci_resource_start(dev, bar);
- if (smbus->base) {
- smbus->size = pci_resource_len(dev, bar);
- } else {
- /* Older incarnations of the device used non-standard BARs */
- u16 iobase;
-
- if (pci_read_config_word(dev, alt_reg, &iobase)
- != PCIBIOS_SUCCESSFUL) {
- dev_err(&dev->dev, "Error reading PCI config for %s\n",
- name);
- return -EIO;
- }
-
- smbus->base = iobase & PCI_BASE_ADDRESS_IO_MASK;
- smbus->size = 64;
- }
-
- error = acpi_check_region(smbus->base, smbus->size,
- nforce2_driver.name);
- if (error)
- return error;
-
- if (!request_region(smbus->base, smbus->size, nforce2_driver.name)) {
- dev_err(&smbus->adapter.dev, "Error requesting region %02x .. %02X for %s\n",
- smbus->base, smbus->base+smbus->size-1, name);
- return -EBUSY;
- }
- smbus->adapter.owner = THIS_MODULE;
- smbus->adapter.class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
- smbus->adapter.algo = &smbus_algorithm;
- smbus->adapter.algo_data = smbus;
- smbus->adapter.dev.parent = &dev->dev;
- snprintf(smbus->adapter.name, sizeof(smbus->adapter.name),
- "SMBus nForce2 adapter at %04x", smbus->base);
-
- error = i2c_add_adapter(&smbus->adapter);
- if (error) {
- dev_err(&smbus->adapter.dev, "Failed to register adapter.\n");
- release_region(smbus->base, smbus->size);
- return error;
- }
- dev_info(&smbus->adapter.dev, "nForce2 SMBus adapter at %#x\n", smbus->base);
- return 0;
-}
-
-
-static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_id *id)
-{
- struct nforce2_smbus *smbuses;
- int res1, res2;
-
- /* we support 2 SMBus adapters */
- if (!(smbuses = kzalloc(2*sizeof(struct nforce2_smbus), GFP_KERNEL)))
- return -ENOMEM;
- 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;
- smbuses[1].blockops = 1;
- smbuses[0].can_abort = 1;
- smbuses[1].can_abort = 1;
- }
-
- /* SMBus adapter 1 */
- res1 = nforce2_probe_smb(dev, 4, NFORCE_PCI_SMB1, &smbuses[0], "SMB1");
- if (res1 < 0)
- smbuses[0].base = 0; /* to have a check value */
-
- /* SMBus adapter 2 */
- if (dmi_check_system(nforce2_dmi_blacklist2)) {
- dev_err(&dev->dev, "Disabling SMB2 for safety reasons.\n");
- res2 = -EPERM;
- smbuses[1].base = 0;
- } else {
- res2 = nforce2_probe_smb(dev, 5, NFORCE_PCI_SMB2, &smbuses[1],
- "SMB2");
- if (res2 < 0)
- smbuses[1].base = 0; /* to have a check value */
- }
-
- if ((res1 < 0) && (res2 < 0)) {
- /* we did not find even one of the SMBuses, so we give up */
- kfree(smbuses);
- return -ENODEV;
- }
-
- nforce2_set_reference(&smbuses[0].adapter);
- return 0;
-}
-
-
-static void __devexit nforce2_remove(struct pci_dev *dev)
-{
- struct nforce2_smbus *smbuses = pci_get_drvdata(dev);
-
- nforce2_set_reference(NULL);
- if (smbuses[0].base) {
- i2c_del_adapter(&smbuses[0].adapter);
- release_region(smbuses[0].base, smbuses[0].size);
- }
- if (smbuses[1].base) {
- i2c_del_adapter(&smbuses[1].adapter);
- release_region(smbuses[1].base, smbuses[1].size);
- }
- kfree(smbuses);
-}
-
-static struct pci_driver nforce2_driver = {
- .name = "nForce2_smbus",
- .id_table = nforce2_ids,
- .probe = nforce2_probe,
- .remove = __devexit_p(nforce2_remove),
-};
-
-static int __init nforce2_init(void)
-{
- return pci_register_driver(&nforce2_driver);
-}
-
-static void __exit nforce2_exit(void)
-{
- pci_unregister_driver(&nforce2_driver);
-}
-
-module_init(nforce2_init);
-module_exit(nforce2_exit);
-
generated by cgit (git 2.34.1) at 2025-03-30 20:14:05 +0000