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-rw-r--r--drivers/i2c/busses/Kconfig2
-rw-r--r--drivers/i2c/busses/i2c-i801.c59
-rw-r--r--drivers/i2c/busses/i2c-parport.c2
-rw-r--r--drivers/i2c/busses/i2c-scmi.c32
-rw-r--r--drivers/i2c/busses/i2c-stub.c9
-rw-r--r--drivers/i2c/busses/scx200_acb.c2
6 files changed, 68 insertions, 38 deletions
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 9c6170cd9aac..87ab0568bb0e 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -564,7 +564,7 @@ config I2C_STU300
config I2C_VERSATILE
tristate "ARM Versatile/Realview I2C bus support"
- depends on ARCH_VERSATILE || ARCH_REALVIEW
+ depends on ARCH_VERSATILE || ARCH_REALVIEW || ARCH_VEXPRESS
select I2C_ALGOBIT
help
Say yes if you want to support the I2C serial bus on ARMs Versatile
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 299b918455a3..f4b21f2bb8ed 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -138,6 +138,17 @@ static struct pci_dev *I801_dev;
#define FEATURE_I2C_BLOCK_READ (1 << 3)
static unsigned int i801_features;
+static const char *i801_feature_names[] = {
+ "SMBus PEC",
+ "Block buffer",
+ "Block process call",
+ "I2C block read",
+};
+
+static unsigned int disable_features;
+module_param(disable_features, uint, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(disable_features, "Disable selected driver features");
+
/* Make sure the SMBus host is ready to start transmitting.
Return 0 if it is, -EBUSY if it is not. */
static int i801_check_pre(void)
@@ -341,9 +352,8 @@ static int i801_block_transaction_byte_by_byte(union i2c_smbus_data *data,
do {
msleep(1);
status = inb_p(SMBHSTSTS);
- }
- while ((!(status & SMBHSTSTS_BYTE_DONE))
- && (timeout++ < MAX_TIMEOUT));
+ } while ((!(status & SMBHSTSTS_BYTE_DONE))
+ && (timeout++ < MAX_TIMEOUT));
result = i801_check_post(status, timeout > MAX_TIMEOUT);
if (result < 0)
@@ -440,9 +450,9 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
}
/* Return negative errno on error. */
-static s32 i801_access(struct i2c_adapter * adap, u16 addr,
+static s32 i801_access(struct i2c_adapter *adap, u16 addr,
unsigned short flags, char read_write, u8 command,
- int size, union i2c_smbus_data * data)
+ int size, union i2c_smbus_data *data)
{
int hwpec;
int block = 0;
@@ -511,7 +521,7 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
else
outb_p(inb_p(SMBAUXCTL) & (~SMBAUXCTL_CRC), SMBAUXCTL);
- if(block)
+ if (block)
ret = i801_block_transaction(data, read_write, size, hwpec);
else
ret = i801_transaction(xact | ENABLE_INT9);
@@ -523,9 +533,9 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
outb_p(inb_p(SMBAUXCTL) & ~(SMBAUXCTL_CRC | SMBAUXCTL_E32B),
SMBAUXCTL);
- if(block)
+ if (block)
return ret;
- if(ret)
+ if (ret)
return ret;
if ((read_write == I2C_SMBUS_WRITE) || (xact == I801_QUICK))
return 0;
@@ -585,7 +595,7 @@ static const struct pci_device_id i801_ids[] = {
{ 0, }
};
-MODULE_DEVICE_TABLE (pci, i801_ids);
+MODULE_DEVICE_TABLE(pci, i801_ids);
#if defined CONFIG_INPUT_APANEL || defined CONFIG_INPUT_APANEL_MODULE
static unsigned char apanel_addr;
@@ -689,10 +699,11 @@ static void __devinit dmi_check_onboard_devices(const struct dmi_header *dm,
}
#endif
-static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id *id)
+static int __devinit i801_probe(struct pci_dev *dev,
+ const struct pci_device_id *id)
{
unsigned char temp;
- int err;
+ int err, i;
#if defined CONFIG_SENSORS_FSCHMD || defined CONFIG_SENSORS_FSCHMD_MODULE
const char *vendor;
#endif
@@ -700,26 +711,28 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
I801_dev = dev;
i801_features = 0;
switch (dev->device) {
- case PCI_DEVICE_ID_INTEL_82801EB_3:
- case PCI_DEVICE_ID_INTEL_ESB_4:
- case PCI_DEVICE_ID_INTEL_ICH6_16:
- case PCI_DEVICE_ID_INTEL_ICH7_17:
- case PCI_DEVICE_ID_INTEL_ESB2_17:
- case PCI_DEVICE_ID_INTEL_ICH8_5:
- case PCI_DEVICE_ID_INTEL_ICH9_6:
- case PCI_DEVICE_ID_INTEL_TOLAPAI_1:
- case PCI_DEVICE_ID_INTEL_ICH10_4:
- case PCI_DEVICE_ID_INTEL_ICH10_5:
- case PCI_DEVICE_ID_INTEL_PCH_SMBUS:
- case PCI_DEVICE_ID_INTEL_CPT_SMBUS:
+ default:
i801_features |= FEATURE_I2C_BLOCK_READ;
/* fall through */
case PCI_DEVICE_ID_INTEL_82801DB_3:
i801_features |= FEATURE_SMBUS_PEC;
i801_features |= FEATURE_BLOCK_BUFFER;
+ /* fall through */
+ case PCI_DEVICE_ID_INTEL_82801CA_3:
+ case PCI_DEVICE_ID_INTEL_82801BA_2:
+ case PCI_DEVICE_ID_INTEL_82801AB_3:
+ case PCI_DEVICE_ID_INTEL_82801AA_3:
break;
}
+ /* Disable features on user request */
+ for (i = 0; i < ARRAY_SIZE(i801_feature_names); i++) {
+ if (i801_features & disable_features & (1 << i))
+ dev_notice(&dev->dev, "%s disabled by user\n",
+ i801_feature_names[i]);
+ }
+ i801_features &= ~disable_features;
+
err = pci_enable_device(dev);
if (err) {
dev_err(&dev->dev, "Failed to enable SMBus PCI device (%d)\n",
diff --git a/drivers/i2c/busses/i2c-parport.c b/drivers/i2c/busses/i2c-parport.c
index 220fca7f23a6..0067e28bc6ee 100644
--- a/drivers/i2c/busses/i2c-parport.c
+++ b/drivers/i2c/busses/i2c-parport.c
@@ -136,7 +136,7 @@ static int parport_getsda(void *data)
copied. The attaching code will set getscl to NULL for adapters that
cannot read SCL back, and will also make the data field point to
the parallel port structure. */
-static struct i2c_algo_bit_data parport_algo_data = {
+static const struct i2c_algo_bit_data parport_algo_data = {
.setsda = parport_setsda,
.setscl = parport_setscl,
.getsda = parport_getsda,
diff --git a/drivers/i2c/busses/i2c-scmi.c b/drivers/i2c/busses/i2c-scmi.c
index 365e0becaf12..388cbdc96db7 100644
--- a/drivers/i2c/busses/i2c-scmi.c
+++ b/drivers/i2c/busses/i2c-scmi.c
@@ -33,6 +33,7 @@ struct acpi_smbus_cmi {
u8 cap_info:1;
u8 cap_read:1;
u8 cap_write:1;
+ struct smbus_methods_t *methods;
};
static const struct smbus_methods_t smbus_methods = {
@@ -41,10 +42,19 @@ static const struct smbus_methods_t smbus_methods = {
.mt_sbw = "_SBW",
};
+/* Some IBM BIOSes omit the leading underscore */
+static const struct smbus_methods_t ibm_smbus_methods = {
+ .mt_info = "SBI_",
+ .mt_sbr = "SBR_",
+ .mt_sbw = "SBW_",
+};
+
static const struct acpi_device_id acpi_smbus_cmi_ids[] = {
- {"SMBUS01", 0},
+ {"SMBUS01", (kernel_ulong_t)&smbus_methods},
+ {ACPI_SMBUS_IBM_HID, (kernel_ulong_t)&ibm_smbus_methods},
{"", 0}
};
+MODULE_DEVICE_TABLE(acpi, acpi_smbus_cmi_ids);
#define ACPI_SMBUS_STATUS_OK 0x00
#define ACPI_SMBUS_STATUS_FAIL 0x07
@@ -150,11 +160,11 @@ acpi_smbus_cmi_access(struct i2c_adapter *adap, u16 addr, unsigned short flags,
if (read_write == I2C_SMBUS_READ) {
protocol |= ACPI_SMBUS_PRTCL_READ;
- method = smbus_methods.mt_sbr;
+ method = smbus_cmi->methods->mt_sbr;
input.count = 3;
} else {
protocol |= ACPI_SMBUS_PRTCL_WRITE;
- method = smbus_methods.mt_sbw;
+ method = smbus_cmi->methods->mt_sbw;
input.count = 5;
}
@@ -290,13 +300,13 @@ static int acpi_smbus_cmi_add_cap(struct acpi_smbus_cmi *smbus_cmi,
union acpi_object *obj;
acpi_status status;
- if (!strcmp(name, smbus_methods.mt_info)) {
+ if (!strcmp(name, smbus_cmi->methods->mt_info)) {
status = acpi_evaluate_object(smbus_cmi->handle,
- smbus_methods.mt_info,
+ smbus_cmi->methods->mt_info,
NULL, &buffer);
if (ACPI_FAILURE(status)) {
ACPI_ERROR((AE_INFO, "Evaluating %s: %i",
- smbus_methods.mt_info, status));
+ smbus_cmi->methods->mt_info, status));
return -EIO;
}
@@ -319,9 +329,9 @@ static int acpi_smbus_cmi_add_cap(struct acpi_smbus_cmi *smbus_cmi,
kfree(buffer.pointer);
smbus_cmi->cap_info = 1;
- } else if (!strcmp(name, smbus_methods.mt_sbr))
+ } else if (!strcmp(name, smbus_cmi->methods->mt_sbr))
smbus_cmi->cap_read = 1;
- else if (!strcmp(name, smbus_methods.mt_sbw))
+ else if (!strcmp(name, smbus_cmi->methods->mt_sbw))
smbus_cmi->cap_write = 1;
else
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unsupported CMI method: %s\n",
@@ -349,6 +359,7 @@ static acpi_status acpi_smbus_cmi_query_methods(acpi_handle handle, u32 level,
static int acpi_smbus_cmi_add(struct acpi_device *device)
{
struct acpi_smbus_cmi *smbus_cmi;
+ const struct acpi_device_id *id;
smbus_cmi = kzalloc(sizeof(struct acpi_smbus_cmi), GFP_KERNEL);
if (!smbus_cmi)
@@ -362,6 +373,11 @@ static int acpi_smbus_cmi_add(struct acpi_device *device)
smbus_cmi->cap_read = 0;
smbus_cmi->cap_write = 0;
+ for (id = acpi_smbus_cmi_ids; id->id[0]; id++)
+ if (!strcmp(id->id, acpi_device_hid(device)))
+ smbus_cmi->methods =
+ (struct smbus_methods_t *) id->driver_data;
+
acpi_walk_namespace(ACPI_TYPE_METHOD, smbus_cmi->handle, 1,
acpi_smbus_cmi_query_methods, NULL, smbus_cmi, NULL);
diff --git a/drivers/i2c/busses/i2c-stub.c b/drivers/i2c/busses/i2c-stub.c
index 0c770eabe85e..b1b3447942c9 100644
--- a/drivers/i2c/busses/i2c-stub.c
+++ b/drivers/i2c/busses/i2c-stub.c
@@ -29,13 +29,16 @@
#include <linux/i2c.h>
#define MAX_CHIPS 10
+#define STUB_FUNC (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | \
+ I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | \
+ I2C_FUNC_SMBUS_I2C_BLOCK)
static unsigned short chip_addr[MAX_CHIPS];
module_param_array(chip_addr, ushort, NULL, S_IRUGO);
MODULE_PARM_DESC(chip_addr,
"Chip addresses (up to 10, between 0x03 and 0x77)");
-static unsigned long functionality = ~0UL;
+static unsigned long functionality = STUB_FUNC;
module_param(functionality, ulong, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(functionality, "Override functionality bitfield");
@@ -156,9 +159,7 @@ static s32 stub_xfer(struct i2c_adapter * adap, u16 addr, unsigned short flags,
static u32 stub_func(struct i2c_adapter *adapter)
{
- return (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
- I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
- I2C_FUNC_SMBUS_I2C_BLOCK) & functionality;
+ return STUB_FUNC & functionality;
}
static const struct i2c_algorithm smbus_algorithm = {
diff --git a/drivers/i2c/busses/scx200_acb.c b/drivers/i2c/busses/scx200_acb.c
index cf994bd01d9c..1a9c1055f78b 100644
--- a/drivers/i2c/busses/scx200_acb.c
+++ b/drivers/i2c/busses/scx200_acb.c
@@ -551,7 +551,7 @@ static int __init scx200_create_isa(const char *text, unsigned long base,
* the name and the BAR where the I/O address resource is located. ISA
* devices are flagged with a bar value of -1 */
-static struct pci_device_id scx200_pci[] = {
+static const struct pci_device_id scx200_pci[] __initconst = {
{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SCx200_BRIDGE),
.driver_data = 0 },
{ PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_SC1100_BRIDGE),
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-12 10:56:55 +0000