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Merge remote branch 'origin' into secretlab/next-devicetree

Browse Source 
Merging in current state of Linus' tree to deal with merge conflicts and
build failures in vio.c after merge.

Conflicts:
	drivers/i2c/busses/i2c-cpm.c
	drivers/i2c/busses/i2c-mpc.c
	drivers/net/gianfar.c

Also fixed up one line in arch/powerpc/kernel/vio.c to use the
correct node pointer.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Grant Likely
2010-05-22 00:36:56 -06:00
parent 44504b2beb f4b87dee92
commit cf9b59e9d3
6983 changed files with 473835 additions and 213947 deletions
Download Patch File Download Diff File Expand all files Collapse all files

36
drivers/i2c/algos/i2c-algo-pca.c
View File

@@ -109,13 +109,13 @@ static void pca_stop(struct i2c_algo_pca_data *adap)
* returns after the address has been sent
*/
static int pca_address(struct i2c_algo_pca_data *adap,
struct i2c_msg *msg)
struct i2c_msg *msg)
{
int sta = pca_get_con(adap);
int addr;
addr = ( (0x7f & msg->addr) << 1 );
if (msg->flags & I2C_M_RD )
addr = ((0x7f & msg->addr) << 1);
if (msg->flags & I2C_M_RD)
addr |= 1;
DEB2("=== SLAVE ADDRESS %#04x+%c=%#04x\n",
msg->addr, msg->flags & I2C_M_RD ? 'R' : 'W', addr);
@@ -134,7 +134,7 @@ static int pca_address(struct i2c_algo_pca_data *adap,
* Returns after the byte has been transmitted
*/
static int pca_tx_byte(struct i2c_algo_pca_data *adap,
__u8 b)
__u8 b)
{
int sta = pca_get_con(adap);
DEB2("=== WRITE %#04x\n", b);
@@ -164,13 +164,13 @@ static void pca_rx_byte(struct i2c_algo_pca_data *adap,
* Returns after next byte has arrived.
*/
static int pca_rx_ack(struct i2c_algo_pca_data *adap,
int ack)
int ack)
{
int sta = pca_get_con(adap);
sta &= ~(I2C_PCA_CON_STO|I2C_PCA_CON_STA|I2C_PCA_CON_SI|I2C_PCA_CON_AA);
if ( ack )
if (ack)
sta |= I2C_PCA_CON_AA;
pca_set_con(adap, sta);
@@ -178,12 +178,12 @@ static int pca_rx_ack(struct i2c_algo_pca_data *adap,
}
static int pca_xfer(struct i2c_adapter *i2c_adap,
struct i2c_msg *msgs,
int num)
struct i2c_msg *msgs,
int num)
{
struct i2c_algo_pca_data *adap = i2c_adap->algo_data;
struct i2c_msg *msg = NULL;
int curmsg;
struct i2c_algo_pca_data *adap = i2c_adap->algo_data;
struct i2c_msg *msg = NULL;
int curmsg;
int numbytes = 0;
int state;
int ret;
@@ -202,21 +202,21 @@ static int pca_xfer(struct i2c_adapter *i2c_adap,
DEB1("{{{ XFER %d messages\n", num);
if (i2c_debug>=2) {
if (i2c_debug >= 2) {
for (curmsg = 0; curmsg < num; curmsg++) {
int addr, i;
msg = &msgs[curmsg];
addr = (0x7f & msg->addr) ;
if (msg->flags & I2C_M_RD )
if (msg->flags & I2C_M_RD)
printk(KERN_INFO " [%02d] RD %d bytes from %#02x [%#02x, ...]\n",
curmsg, msg->len, addr, (addr<<1) | 1);
curmsg, msg->len, addr, (addr << 1) | 1);
else {
printk(KERN_INFO " [%02d] WR %d bytes to %#02x [%#02x%s",
curmsg, msg->len, addr, addr<<1,
curmsg, msg->len, addr, addr << 1,
msg->len == 0 ? "" : ", ");
for(i=0; i < msg->len; i++)
for (i = 0; i < msg->len; i++)
printk("%#04x%s", msg->buf[i], i == msg->len - 1 ? "" : ", ");
printk("]\n");
}
@@ -305,7 +305,7 @@ static int pca_xfer(struct i2c_adapter *i2c_adap,
goto out;
case 0x58: /* Data byte has been received; NOT ACK has been returned */
if ( numbytes == msg->len - 1 ) {
if (numbytes == msg->len - 1) {
pca_rx_byte(adap, &msg->buf[numbytes], 0);
curmsg++; numbytes = 0;
if (curmsg == num)
@@ -352,7 +352,7 @@ static int pca_xfer(struct i2c_adapter *i2c_adap,
static u32 pca_func(struct i2c_adapter *adap)
{
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
}
static const struct i2c_algorithm pca_algo = {

2
drivers/i2c/busses/Kconfig
View File

@@ -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

2
drivers/i2c/busses/i2c-ali1535.c
View File

@@ -60,7 +60,7 @@
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <linux/io.h>
/* ALI1535 SMBus address offsets */

2
drivers/i2c/busses/i2c-ali15x3.c
View File

@@ -67,7 +67,7 @@
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <linux/io.h>
/* ALI15X3 SMBus address offsets */
#define SMBHSTSTS (0 + ali15x3_smba)

2
drivers/i2c/busses/i2c-amd756.c
View File

@@ -43,7 +43,7 @@
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <linux/io.h>
/* AMD756 SMBus address offsets */
#define SMB_ADDR_OFFSET 0xE0

2
drivers/i2c/busses/i2c-amd8111.c
View File

@@ -18,7 +18,7 @@
#include <linux/delay.h>
#include <linux/acpi.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <linux/io.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR ("Vojtech Pavlik <vojtech@suse.cz>");

3
drivers/i2c/busses/i2c-at91.c
View File

@@ -23,8 +23,7 @@
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <asm/io.h>
#include <linux/io.h>
#include <mach/at91_twi.h>
#include <mach/board.h>

168
drivers/i2c/busses/i2c-bfin-twi.c
View File

@@ -25,8 +25,6 @@
#include <asm/portmux.h>
#include <asm/irq.h>
#define POLL_TIMEOUT (2 * HZ)
/* SMBus mode*/
#define TWI_I2C_MODE_STANDARD 1
#define TWI_I2C_MODE_STANDARDSUB 2
@@ -44,8 +42,6 @@ struct bfin_twi_iface {
int cur_mode;
int manual_stop;
int result;
int timeout_count;
struct timer_list timeout_timer;
struct i2c_adapter adap;
struct completion complete;
struct i2c_msg *pmsg;
@@ -85,14 +81,15 @@ static const u16 pin_req[2][3] = {
{P_TWI1_SCL, P_TWI1_SDA, 0},
};
static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface)
static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface,
unsigned short twi_int_status)
{
unsigned short twi_int_status = read_INT_STAT(iface);
unsigned short mast_stat = read_MASTER_STAT(iface);
if (twi_int_status & XMTSERV) {
/* Transmit next data */
if (iface->writeNum > 0) {
SSYNC();
write_XMT_DATA8(iface, *(iface->transPtr++));
iface->writeNum--;
}
@@ -114,10 +111,6 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface)
write_MASTER_CTL(iface,
(read_MASTER_CTL(iface) | RSTART) & ~MDIR);
}
SSYNC();
/* Clear status */
write_INT_STAT(iface, XMTSERV);
SSYNC();
}
if (twi_int_status & RCVSERV) {
if (iface->readNum > 0) {
@@ -139,7 +132,6 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface)
} else if (iface->manual_stop) {
write_MASTER_CTL(iface,
read_MASTER_CTL(iface) | STOP);
SSYNC();
} else if (iface->cur_mode == TWI_I2C_MODE_REPEAT &&
iface->cur_msg + 1 < iface->msg_num) {
if (iface->pmsg[iface->cur_msg + 1].flags & I2C_M_RD)
@@ -148,44 +140,37 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface)
else
write_MASTER_CTL(iface,
(read_MASTER_CTL(iface) | RSTART) & ~MDIR);
SSYNC();
}
/* Clear interrupt source */
write_INT_STAT(iface, RCVSERV);
SSYNC();
}
if (twi_int_status & MERR) {
write_INT_STAT(iface, MERR);
write_INT_MASK(iface, 0);
write_MASTER_STAT(iface, 0x3e);
write_MASTER_CTL(iface, 0);
SSYNC();
iface->result = -EIO;
/* if both err and complete int stats are set, return proper
* results.
if (mast_stat & LOSTARB)
dev_dbg(&iface->adap.dev, "Lost Arbitration\n");
if (mast_stat & ANAK)
dev_dbg(&iface->adap.dev, "Address Not Acknowledged\n");
if (mast_stat & DNAK)
dev_dbg(&iface->adap.dev, "Data Not Acknowledged\n");
if (mast_stat & BUFRDERR)
dev_dbg(&iface->adap.dev, "Buffer Read Error\n");
if (mast_stat & BUFWRERR)
dev_dbg(&iface->adap.dev, "Buffer Write Error\n");
/* If it is a quick transfer, only address without data,
* not an err, return 1.
*/
if (twi_int_status & MCOMP) {
write_INT_STAT(iface, MCOMP);
write_INT_MASK(iface, 0);
write_MASTER_CTL(iface, 0);
SSYNC();
/* If it is a quick transfer, only address bug no data,
* not an err, return 1.
*/
if (iface->writeNum == 0 && (mast_stat & BUFRDERR))
iface->result = 1;
/* If address not acknowledged return -1,
* else return 0.
*/
else if (!(mast_stat & ANAK))
iface->result = 0;
}
if (iface->cur_mode == TWI_I2C_MODE_STANDARD &&
iface->transPtr == NULL &&
(twi_int_status & MCOMP) && (mast_stat & DNAK))
iface->result = 1;
complete(&iface->complete);
return;
}
if (twi_int_status & MCOMP) {
write_INT_STAT(iface, MCOMP);
SSYNC();
if (iface->cur_mode == TWI_I2C_MODE_COMBINED) {
if (iface->readNum == 0) {
/* set the read number to 1 and ask for manual
@@ -207,7 +192,6 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface)
/* remove restart bit and enable master receive */
write_MASTER_CTL(iface,
read_MASTER_CTL(iface) & ~RSTART);
SSYNC();
} else if (iface->cur_mode == TWI_I2C_MODE_REPEAT &&
iface->cur_msg+1 < iface->msg_num) {
iface->cur_msg++;
@@ -226,7 +210,6 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface)
write_XMT_DATA8(iface,
*(iface->transPtr++));
iface->writeNum--;
SSYNC();
}
}
@@ -244,15 +227,13 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface)
/* remove restart bit and enable master receive */
write_MASTER_CTL(iface,
read_MASTER_CTL(iface) & ~RSTART);
SSYNC();
} else {
iface->result = 1;
write_INT_MASK(iface, 0);
write_MASTER_CTL(iface, 0);
SSYNC();
complete(&iface->complete);
}
}
complete(&iface->complete);
}
/* Interrupt handler */
@@ -260,38 +241,26 @@ static irqreturn_t bfin_twi_interrupt_entry(int irq, void *dev_id)
{
struct bfin_twi_iface *iface = dev_id;
unsigned long flags;
unsigned short twi_int_status;
spin_lock_irqsave(&iface->lock, flags);
del_timer(&iface->timeout_timer);
bfin_twi_handle_interrupt(iface);
while (1) {
twi_int_status = read_INT_STAT(iface);
if (!twi_int_status)
break;
/* Clear interrupt status */
write_INT_STAT(iface, twi_int_status);
bfin_twi_handle_interrupt(iface, twi_int_status);
SSYNC();
}
spin_unlock_irqrestore(&iface->lock, flags);
return IRQ_HANDLED;
}
static void bfin_twi_timeout(unsigned long data)
{
struct bfin_twi_iface *iface = (struct bfin_twi_iface *)data;
unsigned long flags;
spin_lock_irqsave(&iface->lock, flags);
bfin_twi_handle_interrupt(iface);
if (iface->result == 0) {
iface->timeout_count--;
if (iface->timeout_count > 0) {
iface->timeout_timer.expires = jiffies + POLL_TIMEOUT;
add_timer(&iface->timeout_timer);
} else {
iface->result = -1;
complete(&iface->complete);
}
}
spin_unlock_irqrestore(&iface->lock, flags);
}
/*
* Generic i2c master transfer entrypoint
* One i2c master transfer
*/
static int bfin_twi_master_xfer(struct i2c_adapter *adap,
static int bfin_twi_do_master_xfer(struct i2c_adapter *adap,
struct i2c_msg *msgs, int num)
{
struct bfin_twi_iface *iface = adap->algo_data;
@@ -319,7 +288,6 @@ static int bfin_twi_master_xfer(struct i2c_adapter *adap,
iface->transPtr = pmsg->buf;
iface->writeNum = iface->readNum = pmsg->len;
iface->result = 0;
iface->timeout_count = 10;
init_completion(&(iface->complete));
/* Set Transmit device address */
write_MASTER_ADDR(iface, pmsg->addr);
@@ -358,30 +326,41 @@ static int bfin_twi_master_xfer(struct i2c_adapter *adap,
iface->manual_stop = 1;
}
iface->timeout_timer.expires = jiffies + POLL_TIMEOUT;
add_timer(&iface->timeout_timer);
/* Master enable */
write_MASTER_CTL(iface, read_MASTER_CTL(iface) | MEN |
((iface->read_write == I2C_SMBUS_READ) ? MDIR : 0) |
((CONFIG_I2C_BLACKFIN_TWI_CLK_KHZ > 100) ? FAST : 0));
SSYNC();
wait_for_completion(&iface->complete);
while (!iface->result) {
if (!wait_for_completion_timeout(&iface->complete,
adap->timeout)) {
iface->result = -1;
dev_err(&adap->dev, "master transfer timeout\n");
}
}
rc = iface->result;
if (rc == 1)
return num;
if (iface->result == 1)
rc = iface->cur_msg + 1;
else
return rc;
rc = iface->result;
return rc;
}
/*
* SMBus type transfer entrypoint
* Generic i2c master transfer entrypoint
*/
static int bfin_twi_master_xfer(struct i2c_adapter *adap,
struct i2c_msg *msgs, int num)
{
return bfin_twi_do_master_xfer(adap, msgs, num);
}
int bfin_twi_smbus_xfer(struct i2c_adapter *adap, u16 addr,
/*
* One I2C SMBus transfer
*/
int bfin_twi_do_smbus_xfer(struct i2c_adapter *adap, u16 addr,
unsigned short flags, char read_write,
u8 command, int size, union i2c_smbus_data *data)
{
@@ -469,7 +448,6 @@ int bfin_twi_smbus_xfer(struct i2c_adapter *adap, u16 addr,
iface->manual_stop = 0;
iface->read_write = read_write;
iface->command = command;
iface->timeout_count = 10;
init_completion(&(iface->complete));
/* FIFO Initiation. Data in FIFO should be discarded before
@@ -486,9 +464,6 @@ int bfin_twi_smbus_xfer(struct i2c_adapter *adap, u16 addr,
write_MASTER_ADDR(iface, addr);
SSYNC();
iface->timeout_timer.expires = jiffies + POLL_TIMEOUT;
add_timer(&iface->timeout_timer);
switch (iface->cur_mode) {
case TWI_I2C_MODE_STANDARDSUB:
write_XMT_DATA8(iface, iface->command);
@@ -550,10 +525,8 @@ int bfin_twi_smbus_xfer(struct i2c_adapter *adap, u16 addr,
else if (iface->readNum > 255) {
write_MASTER_CTL(iface, 0xff << 6);
iface->manual_stop = 1;
} else {
del_timer(&iface->timeout_timer);
} else
break;
}
}
}
write_INT_MASK(iface, MCOMP | MERR |
@@ -569,13 +542,30 @@ int bfin_twi_smbus_xfer(struct i2c_adapter *adap, u16 addr,
}
SSYNC();
wait_for_completion(&iface->complete);
while (!iface->result) {
if (!wait_for_completion_timeout(&iface->complete,
adap->timeout)) {
iface->result = -1;
dev_err(&adap->dev, "smbus transfer timeout\n");
}
}
rc = (iface->result >= 0) ? 0 : -1;
return rc;
}
/*
* Generic I2C SMBus transfer entrypoint
*/
int bfin_twi_smbus_xfer(struct i2c_adapter *adap, u16 addr,
unsigned short flags, char read_write,
u8 command, int size, union i2c_smbus_data *data)
{
return bfin_twi_do_smbus_xfer(adap, addr, flags,
read_write, command, size, data);
}
/*
* Return what the adapter supports
*/
@@ -667,10 +657,6 @@ static int i2c_bfin_twi_probe(struct platform_device *pdev)
goto out_error_no_irq;
}
init_timer(&(iface->timeout_timer));
iface->timeout_timer.function = bfin_twi_timeout;
iface->timeout_timer.data = (unsigned long)iface;
p_adap = &iface->adap;
p_adap->nr = pdev->id;
strlcpy(p_adap->name, pdev->name, sizeof(p_adap->name));
@@ -678,6 +664,8 @@ static int i2c_bfin_twi_probe(struct platform_device *pdev)
p_adap->algo_data = iface;
p_adap->class = I2C_CLASS_HWMON | I2C_CLASS_SPD;
p_adap->dev.parent = &pdev->dev;
p_adap->timeout = 5 * HZ;
p_adap->retries = 3;
rc = peripheral_request_list(pin_req[pdev->id], "i2c-bfin-twi");
if (rc) {

2
drivers/i2c/busses/i2c-cpm.c
View File

@@ -441,7 +441,7 @@ static int __devinit cpm_i2c_setup(struct cpm_i2c *cpm)
init_waitqueue_head(&cpm->i2c_wait);
cpm->irq = of_irq_to_resource(ofdev->dev.of_node, 0, NULL);
if (cpm->irq == NO_IRQ)
if (!cpm->irq)
return -EINVAL;
/* Install interrupt handler. */

2
drivers/i2c/busses/i2c-elektor.c
View File

@@ -37,8 +37,8 @@
#include <linux/isa.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-pcf.h>
#include <linux/io.h>
#include <asm/io.h>
#include <asm/irq.h>
#include "../algos/i2c-algo-pcf.h"

2
drivers/i2c/busses/i2c-gpio.c
View File

@@ -211,7 +211,7 @@ static int __init i2c_gpio_init(void)
return ret;
}
module_init(i2c_gpio_init);
subsys_initcall(i2c_gpio_init);
static void __exit i2c_gpio_exit(void)
{

5
drivers/i2c/busses/i2c-highlander.c
View File

@@ -282,7 +282,6 @@ static int highlander_i2c_smbus_xfer(struct i2c_adapter *adap, u16 addr,
union i2c_smbus_data *data)
{
struct highlander_i2c_dev *dev = i2c_get_adapdata(adap);
int read = read_write & I2C_SMBUS_READ;
u16 tmp;
init_completion(&dev->cmd_complete);
@@ -337,11 +336,11 @@ static int highlander_i2c_smbus_xfer(struct i2c_adapter *adap, u16 addr,
highlander_i2c_done(dev);
/* Set slave address */
iowrite16((addr << 1) | read, dev->base + SMSMADR);
iowrite16((addr << 1) | read_write, dev->base + SMSMADR);
highlander_i2c_command(dev, command, dev->buf_len);
if (read)
if (read_write == I2C_SMBUS_READ)
return highlander_i2c_read(dev);
else
return highlander_i2c_write(dev);

2
drivers/i2c/busses/i2c-hydra.c
View File

@@ -28,7 +28,7 @@
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/init.h>
#include <asm/io.h>
#include <linux/io.h>
#include <asm/hydra.h>

59
drivers/i2c/busses/i2c-i801.c
View File

@@ -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",

16
drivers/i2c/busses/i2c-ibm_iic.c
View File

@@ -39,7 +39,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/of_platform.h>
@@ -668,12 +668,12 @@ static int __devinit iic_request_irq(struct of_device *ofdev,
int irq;
if (iic_force_poll)
return NO_IRQ;
return 0;
irq = irq_of_parse_and_map(np, 0);
if (irq == NO_IRQ) {
if (!irq) {
dev_err(&ofdev->dev, "irq_of_parse_and_map failed\n");
return NO_IRQ;
return 0;
}
/* Disable interrupts until we finish initialization, assumes
@@ -683,7 +683,7 @@ static int __devinit iic_request_irq(struct of_device *ofdev,
if (request_irq(irq, iic_handler, 0, "IBM IIC", dev)) {
dev_err(&ofdev->dev, "request_irq %d failed\n", irq);
/* Fallback to the polling mode */
return NO_IRQ;
return 0;
}
return irq;
@@ -719,7 +719,7 @@ static int __devinit iic_probe(struct of_device *ofdev,
init_waitqueue_head(&dev->wq);
dev->irq = iic_request_irq(ofdev, dev);
if (dev->irq == NO_IRQ)
if (!dev->irq)
dev_warn(&ofdev->dev, "using polling mode\n");
/* Board specific settings */
@@ -766,7 +766,7 @@ static int __devinit iic_probe(struct of_device *ofdev,
return 0;
error_cleanup:
if (dev->irq != NO_IRQ) {
if (dev->irq) {
iic_interrupt_mode(dev, 0);
free_irq(dev->irq, dev);
}
@@ -790,7 +790,7 @@ static int __devexit iic_remove(struct of_device *ofdev)
i2c_del_adapter(&dev->adap);
if (dev->irq != NO_IRQ) {
if (dev->irq) {
iic_interrupt_mode(dev, 0);
free_irq(dev->irq, dev);
}

6
drivers/i2c/busses/i2c-imx.c
View File

@@ -146,10 +146,10 @@ static int i2c_imx_bus_busy(struct imx_i2c_struct *i2c_imx, int for_busy)
"<%s> I2C Interrupted\n", __func__);
return -EINTR;
}
if (time_after(jiffies, orig_jiffies + HZ / 1000)) {
if (time_after(jiffies, orig_jiffies + msecs_to_jiffies(500))) {
dev_dbg(&i2c_imx->adapter.dev,
"<%s> I2C bus is busy\n", __func__);
return -EIO;
return -ETIMEDOUT;
}
schedule();
}
@@ -444,6 +444,8 @@ static int i2c_imx_xfer(struct i2c_adapter *adapter,
result = i2c_imx_read(i2c_imx, &msgs[i]);
else
result = i2c_imx_write(i2c_imx, &msgs[i]);
if (result)
goto fail0;
}
fail0:

3
drivers/i2c/busses/i2c-iop3xx.c
View File

@@ -38,8 +38,7 @@
#include <linux/errno.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <asm/io.h>
#include <linux/io.h>
#include "i2c-iop3xx.h"

6
drivers/i2c/busses/i2c-mpc.c
View File

@@ -118,7 +118,7 @@ static int i2c_wait(struct mpc_i2c *i2c, unsigned timeout, int writing)
u32 x;
int result = 0;
if (i2c->irq == NO_IRQ) {
if (!i2c->irq) {
while (!(readb(i2c->base + MPC_I2C_SR) & CSR_MIF)) {
schedule();
if (time_after(jiffies, orig_jiffies + timeout)) {
@@ -568,7 +568,7 @@ static int __devinit fsl_i2c_probe(struct of_device *op,
}
i2c->irq = irq_of_parse_and_map(op->dev.of_node, 0);
if (i2c->irq != NO_IRQ) { /* i2c->irq = NO_IRQ implies polling */
if (i2c->irq) { /* no i2c->irq implies polling */
result = request_irq(i2c->irq, mpc_i2c_isr,
IRQF_SHARED, "i2c-mpc", i2c);
if (result < 0) {
@@ -628,7 +628,7 @@ static int __devexit fsl_i2c_remove(struct of_device *op)
i2c_del_adapter(&i2c->adap);
dev_set_drvdata(&op->dev, NULL);
if (i2c->irq != NO_IRQ)
if (i2c->irq)
free_irq(i2c->irq, i2c);
irq_dispose_mapping(i2c->irq);

3
drivers/i2c/busses/i2c-mv64xxx.c
View File

@@ -17,8 +17,7 @@
#include <linux/interrupt.h>
#include <linux/mv643xx_i2c.h>
#include <linux/platform_device.h>
#include <asm/io.h>
#include <linux/io.h>
/* Register defines */
#define MV64XXX_I2C_REG_SLAVE_ADDR 0x00

12
drivers/i2c/busses/i2c-nforce2.c
View File

@@ -57,7 +57,7 @@
#include <linux/dmi.h>
#include <linux/acpi.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <linux/io.h>
MODULE_LICENSE("GPL");
MODULE_AUTHOR ("Hans-Frieder Vogt <hfvogt@gmx.net>");
@@ -404,10 +404,9 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_
/* SMBus adapter 1 */
res1 = nforce2_probe_smb(dev, 4, NFORCE_PCI_SMB1, &smbuses[0], "SMB1");
if (res1 < 0) {
dev_err(&dev->dev, "Error probing SMB1.\n");
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");
@@ -416,11 +415,10 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_
} else {
res2 = nforce2_probe_smb(dev, 5, NFORCE_PCI_SMB2, &smbuses[1],
"SMB2");
if (res2 < 0) {
dev_err(&dev->dev, "Error probing SMB2.\n");
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);

6
drivers/i2c/busses/i2c-nomadik.c
View File

@@ -704,7 +704,8 @@ static irqreturn_t i2c_irq_handler(int irq, void *arg)
case I2C_IT_MTD:
case I2C_IT_MTDWS:
if (dev->cli.operation == I2C_READ) {
while (!readl(dev->virtbase + I2C_RISR) & I2C_IT_RXFE) {
while (!(readl(dev->virtbase + I2C_RISR)
& I2C_IT_RXFE)) {
if (dev->cli.count == 0)
break;
*dev->cli.buffer =
@@ -914,6 +915,7 @@ static int __devinit nmk_i2c_probe(struct platform_device *pdev)
static int __devexit nmk_i2c_remove(struct platform_device *pdev)
{
struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
struct nmk_i2c_dev *dev = platform_get_drvdata(pdev);
i2c_del_adapter(&dev->adap);
@@ -924,6 +926,8 @@ static int __devexit nmk_i2c_remove(struct platform_device *pdev)
i2c_clr_bit(dev->virtbase + I2C_CR, I2C_CR_PE);
free_irq(dev->irq, dev);
iounmap(dev->virtbase);
if (res)
release_mem_region(res->start, resource_size(res));
clk_disable(dev->clk);
clk_put(dev->clk);
platform_set_drvdata(pdev, NULL);

2
drivers/i2c/busses/i2c-ocores.c
View File

@@ -19,7 +19,7 @@
#include <linux/wait.h>
#include <linux/i2c-ocores.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <linux/io.h>
struct ocores_i2c {
void __iomem *base;

4
drivers/i2c/busses/i2c-octeon.c
View File

@@ -447,7 +447,7 @@ static struct i2c_adapter octeon_i2c_ops = {
/**
* octeon_i2c_setclock - Calculate and set clock divisors.
*/
static int __init octeon_i2c_setclock(struct octeon_i2c *i2c)
static int __devinit octeon_i2c_setclock(struct octeon_i2c *i2c)
{
int tclk, thp_base, inc, thp_idx, mdiv_idx, ndiv_idx, foscl, diff;
int thp = 0x18, mdiv = 2, ndiv = 0, delta_hz = 1000000;
@@ -490,7 +490,7 @@ static int __init octeon_i2c_setclock(struct octeon_i2c *i2c)
return 0;
}
static int __init octeon_i2c_initlowlevel(struct octeon_i2c *i2c)
static int __devinit octeon_i2c_initlowlevel(struct octeon_i2c *i2c)
{
u8 status;
int tries;

275
drivers/i2c/busses/i2c-omap.c
View File

@@ -38,6 +38,7 @@
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/slab.h>
#include <linux/i2c-omap.h>
/* I2C controller revisions */
#define OMAP_I2C_REV_2 0x20
@@ -45,29 +46,37 @@
/* I2C controller revisions present on specific hardware */
#define OMAP_I2C_REV_ON_2430 0x36
#define OMAP_I2C_REV_ON_3430 0x3C
#define OMAP_I2C_REV_ON_4430 0x40
/* timeout waiting for the controller to respond */
#define OMAP_I2C_TIMEOUT (msecs_to_jiffies(1000))
#define OMAP_I2C_REV_REG 0x00
#define OMAP_I2C_IE_REG 0x01
#define OMAP_I2C_STAT_REG 0x02
#define OMAP_I2C_IV_REG 0x03
/* For OMAP3 I2C_IV has changed to I2C_WE (wakeup enable) */
#define OMAP_I2C_WE_REG 0x03
#define OMAP_I2C_SYSS_REG 0x04
#define OMAP_I2C_BUF_REG 0x05
#define OMAP_I2C_CNT_REG 0x06
#define OMAP_I2C_DATA_REG 0x07
#define OMAP_I2C_SYSC_REG 0x08
#define OMAP_I2C_CON_REG 0x09
#define OMAP_I2C_OA_REG 0x0a
#define OMAP_I2C_SA_REG 0x0b
#define OMAP_I2C_PSC_REG 0x0c
#define OMAP_I2C_SCLL_REG 0x0d
#define OMAP_I2C_SCLH_REG 0x0e
#define OMAP_I2C_SYSTEST_REG 0x0f
#define OMAP_I2C_BUFSTAT_REG 0x10
enum {
OMAP_I2C_REV_REG = 0,
OMAP_I2C_IE_REG,
OMAP_I2C_STAT_REG,
OMAP_I2C_IV_REG,
OMAP_I2C_WE_REG,
OMAP_I2C_SYSS_REG,
OMAP_I2C_BUF_REG,
OMAP_I2C_CNT_REG,
OMAP_I2C_DATA_REG,
OMAP_I2C_SYSC_REG,
OMAP_I2C_CON_REG,
OMAP_I2C_OA_REG,
OMAP_I2C_SA_REG,
OMAP_I2C_PSC_REG,
OMAP_I2C_SCLL_REG,
OMAP_I2C_SCLH_REG,
OMAP_I2C_SYSTEST_REG,
OMAP_I2C_BUFSTAT_REG,
OMAP_I2C_REVNB_LO,
OMAP_I2C_REVNB_HI,
OMAP_I2C_IRQSTATUS_RAW,
OMAP_I2C_IRQENABLE_SET,
OMAP_I2C_IRQENABLE_CLR,
};
/* I2C Interrupt Enable Register (OMAP_I2C_IE): */
#define OMAP_I2C_IE_XDR (1 << 14) /* TX Buffer drain int enable */
@@ -157,6 +166,9 @@
#define SYSC_IDLEMODE_SMART 0x2
#define SYSC_CLOCKACTIVITY_FCLK 0x2
/* Errata definitions */
#define I2C_OMAP_ERRATA_I207 (1 << 0)
#define I2C_OMAP3_1P153 (1 << 1)
struct omap_i2c_dev {
struct device *dev;
@@ -167,9 +179,13 @@ struct omap_i2c_dev {
struct clk *fclk; /* Functional clock */
struct completion cmd_complete;
struct resource *ioarea;
u32 latency; /* maximum mpu wkup latency */
void (*set_mpu_wkup_lat)(struct device *dev,
long latency);
u32 speed; /* Speed of bus in Khz */
u16 cmd_err;
u8 *buf;
u8 *regs;
size_t buf_len;
struct i2c_adapter adapter;
u8 fifo_size; /* use as flag and value
@@ -186,17 +202,67 @@ struct omap_i2c_dev {
u16 bufstate;
u16 syscstate;
u16 westate;
u16 errata;
};
const static u8 reg_map[] = {
[OMAP_I2C_REV_REG] = 0x00,
[OMAP_I2C_IE_REG] = 0x01,
[OMAP_I2C_STAT_REG] = 0x02,
[OMAP_I2C_IV_REG] = 0x03,
[OMAP_I2C_WE_REG] = 0x03,
[OMAP_I2C_SYSS_REG] = 0x04,
[OMAP_I2C_BUF_REG] = 0x05,
[OMAP_I2C_CNT_REG] = 0x06,
[OMAP_I2C_DATA_REG] = 0x07,
[OMAP_I2C_SYSC_REG] = 0x08,
[OMAP_I2C_CON_REG] = 0x09,
[OMAP_I2C_OA_REG] = 0x0a,
[OMAP_I2C_SA_REG] = 0x0b,
[OMAP_I2C_PSC_REG] = 0x0c,
[OMAP_I2C_SCLL_REG] = 0x0d,
[OMAP_I2C_SCLH_REG] = 0x0e,
[OMAP_I2C_SYSTEST_REG] = 0x0f,
[OMAP_I2C_BUFSTAT_REG] = 0x10,
};
const static u8 omap4_reg_map[] = {
[OMAP_I2C_REV_REG] = 0x04,
[OMAP_I2C_IE_REG] = 0x2c,
[OMAP_I2C_STAT_REG] = 0x28,
[OMAP_I2C_IV_REG] = 0x34,
[OMAP_I2C_WE_REG] = 0x34,
[OMAP_I2C_SYSS_REG] = 0x90,
[OMAP_I2C_BUF_REG] = 0x94,
[OMAP_I2C_CNT_REG] = 0x98,
[OMAP_I2C_DATA_REG] = 0x9c,
[OMAP_I2C_SYSC_REG] = 0x20,
[OMAP_I2C_CON_REG] = 0xa4,
[OMAP_I2C_OA_REG] = 0xa8,
[OMAP_I2C_SA_REG] = 0xac,
[OMAP_I2C_PSC_REG] = 0xb0,
[OMAP_I2C_SCLL_REG] = 0xb4,
[OMAP_I2C_SCLH_REG] = 0xb8,
[OMAP_I2C_SYSTEST_REG] = 0xbC,
[OMAP_I2C_BUFSTAT_REG] = 0xc0,
[OMAP_I2C_REVNB_LO] = 0x00,
[OMAP_I2C_REVNB_HI] = 0x04,
[OMAP_I2C_IRQSTATUS_RAW] = 0x24,
[OMAP_I2C_IRQENABLE_SET] = 0x2c,
[OMAP_I2C_IRQENABLE_CLR] = 0x30,
};
static inline void omap_i2c_write_reg(struct omap_i2c_dev *i2c_dev,
int reg, u16 val)
{
__raw_writew(val, i2c_dev->base + (reg << i2c_dev->reg_shift));
__raw_writew(val, i2c_dev->base +
(i2c_dev->regs[reg] << i2c_dev->reg_shift));
}
static inline u16 omap_i2c_read_reg(struct omap_i2c_dev *i2c_dev, int reg)
{
return __raw_readw(i2c_dev->base + (reg << i2c_dev->reg_shift));
return __raw_readw(i2c_dev->base +
(i2c_dev->regs[reg] << i2c_dev->reg_shift));
}
static int __init omap_i2c_get_clocks(struct omap_i2c_dev *dev)
@@ -265,7 +331,11 @@ static void omap_i2c_idle(struct omap_i2c_dev *dev)
WARN_ON(dev->idle);
dev->iestate = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG);
omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, 0);
if (dev->rev >= OMAP_I2C_REV_ON_4430)
omap_i2c_write_reg(dev, OMAP_I2C_IRQENABLE_CLR, 1);
else
omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, 0);
if (dev->rev < OMAP_I2C_REV_2) {
iv = omap_i2c_read_reg(dev, OMAP_I2C_IV_REG); /* Read clears */
} else {
@@ -330,7 +400,9 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
* REVISIT: Some wkup sources might not be needed.
*/
dev->westate = OMAP_I2C_WE_ALL;
omap_i2c_write_reg(dev, OMAP_I2C_WE_REG, dev->westate);
if (dev->rev < OMAP_I2C_REV_ON_4430)
omap_i2c_write_reg(dev, OMAP_I2C_WE_REG,
dev->westate);
}
}
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
@@ -357,7 +429,7 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
psc = fclk_rate / 12000000;
}
if (cpu_is_omap2430() || cpu_is_omap34xx()) {
if (!(cpu_class_is_omap1() || cpu_is_omap2420())) {
/*
* HSI2C controller internal clk rate should be 19.2 Mhz for
@@ -430,6 +502,11 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
/* Take the I2C module out of reset: */
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN);
dev->errata = 0;
if (cpu_is_omap2430() || cpu_is_omap34xx())
dev->errata |= I2C_OMAP_ERRATA_I207;
/* Enable interrupts */
dev->iestate = (OMAP_I2C_IE_XRDY | OMAP_I2C_IE_RRDY |
OMAP_I2C_IE_ARDY | OMAP_I2C_IE_NACK |
@@ -539,8 +616,12 @@ static int omap_i2c_xfer_msg(struct i2c_adapter *adap,
* REVISIT: We should abort the transfer on signals, but the bus goes
* into arbitration and we're currently unable to recover from it.
*/
if (dev->set_mpu_wkup_lat != NULL)
dev->set_mpu_wkup_lat(dev->dev, dev->latency);
r = wait_for_completion_timeout(&dev->cmd_complete,
OMAP_I2C_TIMEOUT);
if (dev->set_mpu_wkup_lat != NULL)
dev->set_mpu_wkup_lat(dev->dev, -1);
dev->buf_len = 0;
if (r < 0)
return r;
@@ -623,6 +704,34 @@ omap_i2c_ack_stat(struct omap_i2c_dev *dev, u16 stat)
omap_i2c_write_reg(dev, OMAP_I2C_STAT_REG, stat);
}
static inline void i2c_omap_errata_i207(struct omap_i2c_dev *dev, u16 stat)
{
/*
* I2C Errata(Errata Nos. OMAP2: 1.67, OMAP3: 1.8)
* Not applicable for OMAP4.
* Under certain rare conditions, RDR could be set again
* when the bus is busy, then ignore the interrupt and
* clear the interrupt.
*/
if (stat & OMAP_I2C_STAT_RDR) {
/* Step 1: If RDR is set, clear it */
omap_i2c_ack_stat(dev, OMAP_I2C_STAT_RDR);
/* Step 2: */
if (!(omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG)
& OMAP_I2C_STAT_BB)) {
/* Step 3: */
if (omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG)
& OMAP_I2C_STAT_RDR) {
omap_i2c_ack_stat(dev, OMAP_I2C_STAT_RDR);
dev_dbg(dev->dev, "RDR when bus is busy.\n");
}
}
}
}
/* rev1 devices are apparently only on some 15xx */
#ifdef CONFIG_ARCH_OMAP15XX
@@ -684,6 +793,35 @@ omap_i2c_rev1_isr(int this_irq, void *dev_id)
#define omap_i2c_rev1_isr NULL
#endif
/*
* OMAP3430 Errata 1.153: When an XRDY/XDR is hit, wait for XUDF before writing
* data to DATA_REG. Otherwise some data bytes can be lost while transferring
* them from the memory to the I2C interface.
*/
static int errata_omap3_1p153(struct omap_i2c_dev *dev, u16 *stat, int *err)
{
unsigned long timeout = 10000;
while (--timeout && !(*stat & OMAP_I2C_STAT_XUDF)) {
if (*stat & (OMAP_I2C_STAT_NACK | OMAP_I2C_STAT_AL)) {
omap_i2c_ack_stat(dev, *stat & (OMAP_I2C_STAT_XRDY |
OMAP_I2C_STAT_XDR));
*err |= OMAP_I2C_STAT_XUDF;
return -ETIMEDOUT;
}
cpu_relax();
*stat = omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG);
}
if (!timeout) {
dev_err(dev->dev, "timeout waiting on XUDF bit\n");
return 0;
}
return 0;
}
static irqreturn_t
omap_i2c_isr(int this_irq, void *dev_id)
{
@@ -733,6 +871,10 @@ complete:
}
if (stat & (OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR)) {
u8 num_bytes = 1;
if (dev->errata & I2C_OMAP_ERRATA_I207)
i2c_omap_errata_i207(dev, stat);
if (dev->fifo_size) {
if (stat & OMAP_I2C_STAT_RRDY)
num_bytes = dev->fifo_size;
@@ -747,9 +889,12 @@ complete:
if (dev->buf_len) {
*dev->buf++ = w;
dev->buf_len--;
/* Data reg from 2430 is 8 bit wide */
if (!cpu_is_omap2430() &&
!cpu_is_omap34xx()) {
/*
* Data reg in 2430, omap3 and
* omap4 is 8 bit wide
*/
if (cpu_class_is_omap1() ||
cpu_is_omap2420()) {
if (dev->buf_len) {
*dev->buf++ = w >> 8;
dev->buf_len--;
@@ -787,9 +932,12 @@ complete:
if (dev->buf_len) {
w = *dev->buf++;
dev->buf_len--;
/* Data reg from 2430 is 8 bit wide */
if (!cpu_is_omap2430() &&
!cpu_is_omap34xx()) {
/*
* Data reg in 2430, omap3 and
* omap4 is 8 bit wide
*/
if (cpu_class_is_omap1() ||
cpu_is_omap2420()) {
if (dev->buf_len) {
w |= *dev->buf++ << 8;
dev->buf_len--;
@@ -807,25 +955,9 @@ complete:
break;
}
/*
* OMAP3430 Errata 1.153: When an XRDY/XDR
* is hit, wait for XUDF before writing data
* to DATA_REG. Otherwise some data bytes can
* be lost while transferring them from the
* memory to the I2C interface.
*/
if (dev->rev <= OMAP_I2C_REV_ON_3430) {
while (!(stat & OMAP_I2C_STAT_XUDF)) {
if (stat & (OMAP_I2C_STAT_NACK | OMAP_I2C_STAT_AL)) {
omap_i2c_ack_stat(dev, stat & (OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR));
err |= OMAP_I2C_STAT_XUDF;
goto complete;
}
cpu_relax();
stat = omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG);
}
}
if ((dev->errata & I2C_OMAP3_1P153) &&
errata_omap3_1p153(dev, &stat, &err))
goto complete;
omap_i2c_write_reg(dev, OMAP_I2C_DATA_REG, w);
}
@@ -857,6 +989,7 @@ omap_i2c_probe(struct platform_device *pdev)
struct omap_i2c_dev *dev;
struct i2c_adapter *adap;
struct resource *mem, *irq, *ioarea;
struct omap_i2c_bus_platform_data *pdata = pdev->dev.platform_data;
irq_handler_t isr;
int r;
u32 speed = 0;
@@ -886,10 +1019,13 @@ omap_i2c_probe(struct platform_device *pdev)
goto err_release_region;
}
if (pdev->dev.platform_data != NULL)
speed = *(u32 *)pdev->dev.platform_data;
else
speed = 100; /* Defualt speed */
if (pdata != NULL) {
speed = pdata->clkrate;
dev->set_mpu_wkup_lat = pdata->set_mpu_wkup_lat;
} else {
speed = 100; /* Default speed */
dev->set_mpu_wkup_lat = NULL;
}
dev->speed = speed;
dev->idle = 1;
@@ -903,14 +1039,29 @@ omap_i2c_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, dev);
if (cpu_is_omap7xx())
dev->reg_shift = 1;
else if (cpu_is_omap44xx())
dev->reg_shift = 0;
else
dev->reg_shift = 2;
if ((r = omap_i2c_get_clocks(dev)) != 0)
goto err_iounmap;
if (cpu_is_omap44xx())
dev->regs = (u8 *) omap4_reg_map;
else
dev->regs = (u8 *) reg_map;
omap_i2c_unidle(dev);
dev->rev = omap_i2c_read_reg(dev, OMAP_I2C_REV_REG) & 0xff;
if (cpu_is_omap2430() || cpu_is_omap34xx()) {
if (dev->rev <= OMAP_I2C_REV_ON_3430)
dev->errata |= I2C_OMAP3_1P153;
if (!(cpu_class_is_omap1() || cpu_is_omap2420())) {
u16 s;
/* Set up the fifo size - Get total size */
@@ -922,15 +1073,19 @@ omap_i2c_probe(struct platform_device *pdev)
* size. This is to ensure that we can handle the status on int
* call back latencies.
*/
dev->fifo_size = (dev->fifo_size / 2);
dev->b_hw = 1; /* Enable hardware fixes */
if (dev->rev >= OMAP_I2C_REV_ON_4430) {
dev->fifo_size = 0;
dev->b_hw = 0; /* Disable hardware fixes */
} else {
dev->fifo_size = (dev->fifo_size / 2);
dev->b_hw = 1; /* Enable hardware fixes */
}
/* calculate wakeup latency constraint for MPU */
if (dev->set_mpu_wkup_lat != NULL)
dev->latency = (1000000 * dev->fifo_size) /
(1000 * speed / 8);
}
if (cpu_is_omap7xx())
dev->reg_shift = 1;
else
dev->reg_shift = 2;
/* reset ASAP, clearing any IRQs */
omap_i2c_init(dev);

2
drivers/i2c/busses/i2c-parport-light.c
View File

@@ -33,7 +33,7 @@
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/i2c-smbus.h>
#include <asm/io.h>
#include <linux/io.h>
#include "i2c-parport.h"
#define DEFAULT_BASE 0x378

2
drivers/i2c/busses/i2c-parport.c
View File

@@ -137,7 +137,7 @@ 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,

2
drivers/i2c/busses/i2c-pasemi.c
View File

@@ -25,7 +25,7 @@
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <linux/io.h>
static struct pci_driver pasemi_smb_driver;

2
drivers/i2c/busses/i2c-pca-isa.c
View File

@@ -30,8 +30,8 @@
#include <linux/isa.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-pca.h>
#include <linux/io.h>
#include <asm/io.h>
#include <asm/irq.h>
#define DRIVER "i2c-pca-isa"

2
drivers/i2c/busses/i2c-pca-platform.c
View File

@@ -23,9 +23,9 @@
#include <linux/i2c-algo-pca.h>
#include <linux/i2c-pca-platform.h>
#include <linux/gpio.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <asm/io.h>
struct i2c_pca_pf_data {
void __iomem *reg_base;

2
drivers/i2c/busses/i2c-piix4.c
View File

@@ -39,7 +39,7 @@
#include <linux/init.h>
#include <linux/dmi.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <linux/io.h>
/* PIIX4 SMBus address offsets */

2
drivers/i2c/busses/i2c-pmcmsp.c
View File

@@ -33,7 +33,7 @@
#include <linux/completion.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <asm/io.h>
#include <linux/io.h>
#define DRV_NAME "pmcmsptwi"

8
drivers/i2c/busses/i2c-pnx.c
View File

@@ -173,6 +173,9 @@ static int i2c_pnx_master_xmit(struct i2c_pnx_algo_data *alg_data)
/* We still have something to talk about... */
val = *alg_data->mif.buf++;
if (alg_data->mif.len == 1)
val |= stop_bit;
alg_data->mif.len--;
iowrite32(val, I2C_REG_TX(alg_data));
@@ -246,6 +249,9 @@ static int i2c_pnx_master_rcv(struct i2c_pnx_algo_data *alg_data)
__func__);
if (alg_data->mif.len == 1) {
/* Last byte, do not acknowledge next rcv. */
val |= stop_bit;
/*
* Enable interrupt RFDAIE (data in Rx fifo),
* and disable DRMIE (need data for Tx)
@@ -633,6 +639,8 @@ static int __devinit i2c_pnx_probe(struct platform_device *pdev)
*/
tmp = ((freq / 1000) / I2C_PNX_SPEED_KHZ) / 2 - 2;
if (tmp > 0x3FF)
tmp = 0x3FF;
iowrite32(tmp, I2C_REG_CKH(alg_data));
iowrite32(tmp, I2C_REG_CKL(alg_data));

28
drivers/i2c/busses/i2c-pxa.c
View File

@@ -34,9 +34,9 @@
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <plat/i2c.h>
/*
@@ -209,18 +209,6 @@ static void i2c_pxa_show_state(struct pxa_i2c *i2c, int lno, const char *fname)
}
#define show_state(i2c) i2c_pxa_show_state(i2c, __LINE__, __func__)
#else
#define i2c_debug 0
#define show_state(i2c) do { } while (0)
#define decode_ISR(val) do { } while (0)
#define decode_ICR(val) do { } while (0)
#endif
#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)
{
@@ -236,6 +224,20 @@ static void i2c_pxa_scream_blue_murder(struct pxa_i2c *i2c, const char *why)
printk("\n");
}
#else /* ifdef DEBUG */
#define i2c_debug 0
#define show_state(i2c) do { } while (0)
#define decode_ISR(val) do { } while (0)
#define decode_ICR(val) do { } while (0)
#define i2c_pxa_scream_blue_murder(i2c, why) do { } while (0)
#endif /* ifdef DEBUG / else */
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 inline int i2c_pxa_is_slavemode(struct pxa_i2c *i2c)
{
return !(readl(_ICR(i2c)) & ICR_SCLE);

21
drivers/i2c/busses/i2c-s3c2410.c
View File

@@ -35,9 +35,9 @@
#include <linux/clk.h>
#include <linux/cpufreq.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <plat/regs-iic.h>
#include <plat/iic.h>
@@ -482,7 +482,8 @@ static int s3c24xx_i2c_set_master(struct s3c24xx_i2c *i2c)
static int s3c24xx_i2c_doxfer(struct s3c24xx_i2c *i2c,
struct i2c_msg *msgs, int num)
{
unsigned long timeout;
unsigned long iicstat, timeout;
int spins = 20;
int ret;
if (i2c->suspended)
@@ -521,7 +522,21 @@ static int s3c24xx_i2c_doxfer(struct s3c24xx_i2c *i2c,
/* ensure the stop has been through the bus */
msleep(1);
dev_dbg(i2c->dev, "waiting for bus idle\n");
/* first, try busy waiting briefly */
do {
iicstat = readl(i2c->regs + S3C2410_IICSTAT);
} while ((iicstat & S3C2410_IICSTAT_START) && --spins);
/* if that timed out sleep */
if (!spins) {
msleep(1);
iicstat = readl(i2c->regs + S3C2410_IICSTAT);
}
if (iicstat & S3C2410_IICSTAT_START)
dev_warn(i2c->dev, "timeout waiting for bus idle\n");
out:
return ret;

2
drivers/i2c/busses/i2c-s6000.c
View File

@@ -36,8 +36,8 @@
#include <linux/completion.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <asm/io.h>
#include "i2c-s6000.h"
#define DRV_NAME "i2c-s6000"

2
drivers/i2c/busses/i2c-sh7760.c
View File

@@ -16,10 +16,10 @@
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <asm/clock.h>
#include <asm/i2c-sh7760.h>
#include <asm/io.h>
/* register offsets */
#define I2CSCR 0x0 /* slave ctrl */

2
drivers/i2c/busses/i2c-sibyte.c
View File

@@ -22,7 +22,7 @@
#include <linux/module.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <asm/io.h>
#include <linux/io.h>
#include <asm/sibyte/sb1250_regs.h>
#include <asm/sibyte/sb1250_smbus.h>

3
drivers/i2c/busses/i2c-simtec.c
View File

@@ -24,12 +24,11 @@
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/io.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <asm/io.h>
struct simtec_i2c_data {
struct resource *ioarea;
void __iomem *reg;

2
drivers/i2c/busses/i2c-sis5595.c
View File

@@ -61,7 +61,7 @@
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <linux/io.h>
static int blacklist[] = {
PCI_DEVICE_ID_SI_540,

2
drivers/i2c/busses/i2c-sis630.c
View File

@@ -53,7 +53,7 @@
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <linux/io.h>
/* SIS630 SMBus registers */
#define SMB_STS 0x80 /* status */

2
drivers/i2c/busses/i2c-sis96x.c
View File

@@ -38,7 +38,7 @@
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <linux/io.h>
/* base address register in PCI config space */
#define SIS96x_BAR 0x04

2
drivers/i2c/busses/i2c-stu300.c
View File

@@ -498,7 +498,7 @@ static int stu300_set_clk(struct stu300_dev *dev, unsigned long clkrate)
int i = 0;
/* Locate the apropriate clock setting */
while (i < ARRAY_SIZE(stu300_clktable) &&
while (i < ARRAY_SIZE(stu300_clktable) - 1 &&
stu300_clktable[i].rate < clkrate)
i++;

9
drivers/i2c/busses/i2c-stub.c
View File

@@ -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 = {

3
drivers/i2c/busses/i2c-versatile.c
View File

@@ -15,8 +15,7 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <linux/io.h>
#define I2C_CONTROL 0x00
#define I2C_CONTROLS 0x00

2
drivers/i2c/busses/i2c-via.c
View File

@@ -25,7 +25,7 @@
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <asm/io.h>
#include <linux/io.h>
/* Power management registers */
#define PM_CFG_REVID 0x08 /* silicon revision code */

2
drivers/i2c/busses/i2c-viapro.c
View File

@@ -51,7 +51,7 @@
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <asm/io.h>
#include <linux/io.h>
static struct pci_dev *vt596_pdev;

4
drivers/i2c/busses/scx200_acb.c
View File

@@ -32,7 +32,7 @@
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <asm/io.h>
#include <linux/io.h>
#include <linux/scx200.h>
@@ -552,7 +552,7 @@ 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),

2
drivers/i2c/busses/scx200_i2c.c
View File

@@ -27,7 +27,7 @@
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <asm/io.h>
#include <linux/io.h>
#include <linux/scx200_gpio.h>

345
drivers/i2c/i2c-core.c
View File

@@ -40,12 +40,11 @@
#include "i2c-core.h"
/* core_lock protects i2c_adapter_idr, userspace_devices, and guarantees
/* core_lock protects i2c_adapter_idr, and guarantees
that device detection, deletion of detected devices, and attach_adapter
and detach_adapter calls are serialized */
static DEFINE_MUTEX(core_lock);
static DEFINE_IDR(i2c_adapter_idr);
static LIST_HEAD(userspace_devices);
static struct device_type i2c_client_type;
static int i2c_check_addr(struct i2c_adapter *adapter, int addr);
@@ -117,8 +116,10 @@ static int i2c_device_probe(struct device *dev)
dev_dbg(dev, "probe\n");
status = driver->probe(client, i2c_match_id(driver->id_table, client));
if (status)
if (status) {
client->driver = NULL;
i2c_set_clientdata(client, NULL);
}
return status;
}
@@ -139,8 +140,10 @@ static int i2c_device_remove(struct device *dev)
dev->driver = NULL;
status = 0;
}
if (status == 0)
if (status == 0) {
client->driver = NULL;
i2c_set_clientdata(client, NULL);
}
return status;
}
@@ -156,82 +159,8 @@ static void i2c_device_shutdown(struct device *dev)
driver->shutdown(client);
}
#ifdef CONFIG_SUSPEND
static int i2c_device_pm_suspend(struct device *dev)
{
const struct dev_pm_ops *pm;
if (!dev->driver)
return 0;
pm = dev->driver->pm;
if (!pm || !pm->suspend)
return 0;
return pm->suspend(dev);
}
static int i2c_device_pm_resume(struct device *dev)
{
const struct dev_pm_ops *pm;
if (!dev->driver)
return 0;
pm = dev->driver->pm;
if (!pm || !pm->resume)
return 0;
return pm->resume(dev);
}
#else
#define i2c_device_pm_suspend NULL
#define i2c_device_pm_resume NULL
#endif
#ifdef CONFIG_PM_RUNTIME
static int i2c_device_runtime_suspend(struct device *dev)
{
const struct dev_pm_ops *pm;
if (!dev->driver)
return 0;
pm = dev->driver->pm;
if (!pm || !pm->runtime_suspend)
return 0;
return pm->runtime_suspend(dev);
}
static int i2c_device_runtime_resume(struct device *dev)
{
const struct dev_pm_ops *pm;
if (!dev->driver)
return 0;
pm = dev->driver->pm;
if (!pm || !pm->runtime_resume)
return 0;
return pm->runtime_resume(dev);
}
static int i2c_device_runtime_idle(struct device *dev)
{
const struct dev_pm_ops *pm = NULL;
int ret;
if (dev->driver)
pm = dev->driver->pm;
if (pm && pm->runtime_idle) {
ret = pm->runtime_idle(dev);
if (ret)
return ret;
}
return pm_runtime_suspend(dev);
}
#else
#define i2c_device_runtime_suspend NULL
#define i2c_device_runtime_resume NULL
#define i2c_device_runtime_idle NULL
#endif
static int i2c_device_suspend(struct device *dev, pm_message_t mesg)
#ifdef CONFIG_PM_SLEEP
static int i2c_legacy_suspend(struct device *dev, pm_message_t mesg)
{
struct i2c_client *client = i2c_verify_client(dev);
struct i2c_driver *driver;
@@ -244,7 +173,7 @@ static int i2c_device_suspend(struct device *dev, pm_message_t mesg)
return driver->suspend(client, mesg);
}
static int i2c_device_resume(struct device *dev)
static int i2c_legacy_resume(struct device *dev)
{
struct i2c_client *client = i2c_verify_client(dev);
struct i2c_driver *driver;
@@ -257,6 +186,104 @@ static int i2c_device_resume(struct device *dev)
return driver->resume(client);
}
static int i2c_device_pm_suspend(struct device *dev)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
if (pm_runtime_suspended(dev))
return 0;
if (pm)
return pm->suspend ? pm->suspend(dev) : 0;
return i2c_legacy_suspend(dev, PMSG_SUSPEND);
}
static int i2c_device_pm_resume(struct device *dev)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int ret;
if (pm)
ret = pm->resume ? pm->resume(dev) : 0;
else
ret = i2c_legacy_resume(dev);
if (!ret) {
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
}
return ret;
}
static int i2c_device_pm_freeze(struct device *dev)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
if (pm_runtime_suspended(dev))
return 0;
if (pm)
return pm->freeze ? pm->freeze(dev) : 0;
return i2c_legacy_suspend(dev, PMSG_FREEZE);
}
static int i2c_device_pm_thaw(struct device *dev)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
if (pm_runtime_suspended(dev))
return 0;
if (pm)
return pm->thaw ? pm->thaw(dev) : 0;
return i2c_legacy_resume(dev);
}
static int i2c_device_pm_poweroff(struct device *dev)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
if (pm_runtime_suspended(dev))
return 0;
if (pm)
return pm->poweroff ? pm->poweroff(dev) : 0;
return i2c_legacy_suspend(dev, PMSG_HIBERNATE);
}
static int i2c_device_pm_restore(struct device *dev)
{
const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
int ret;
if (pm)
ret = pm->restore ? pm->restore(dev) : 0;
else
ret = i2c_legacy_resume(dev);
if (!ret) {
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
}
return ret;
}
#else /* !CONFIG_PM_SLEEP */
#define i2c_device_pm_suspend NULL
#define i2c_device_pm_resume NULL
#define i2c_device_pm_freeze NULL
#define i2c_device_pm_thaw NULL
#define i2c_device_pm_poweroff NULL
#define i2c_device_pm_restore NULL
#endif /* !CONFIG_PM_SLEEP */
static void i2c_client_dev_release(struct device *dev)
{
kfree(to_i2c_client(dev));
@@ -298,9 +325,15 @@ static const struct attribute_group *i2c_dev_attr_groups[] = {
static const struct dev_pm_ops i2c_device_pm_ops = {
.suspend = i2c_device_pm_suspend,
.resume = i2c_device_pm_resume,
.runtime_suspend = i2c_device_runtime_suspend,
.runtime_resume = i2c_device_runtime_resume,
.runtime_idle = i2c_device_runtime_idle,
.freeze = i2c_device_pm_freeze,
.thaw = i2c_device_pm_thaw,
.poweroff = i2c_device_pm_poweroff,
.restore = i2c_device_pm_restore,
SET_RUNTIME_PM_OPS(
pm_generic_runtime_suspend,
pm_generic_runtime_resume,
pm_generic_runtime_idle
)
};
struct bus_type i2c_bus_type = {
@@ -309,8 +342,6 @@ struct bus_type i2c_bus_type = {
.probe = i2c_device_probe,
.remove = i2c_device_remove,
.shutdown = i2c_device_shutdown,
.suspend = i2c_device_suspend,
.resume = i2c_device_resume,
.pm = &i2c_device_pm_ops,
};
EXPORT_SYMBOL_GPL(i2c_bus_type);
@@ -541,9 +572,9 @@ i2c_sysfs_new_device(struct device *dev, struct device_attribute *attr,
return -EEXIST;
/* Keep track of the added device */
mutex_lock(&core_lock);
list_add_tail(&client->detected, &userspace_devices);
mutex_unlock(&core_lock);
i2c_lock_adapter(adap);
list_add_tail(&client->detected, &adap->userspace_clients);
i2c_unlock_adapter(adap);
dev_info(dev, "%s: Instantiated device %s at 0x%02hx\n", "new_device",
info.type, info.addr);
@@ -582,9 +613,10 @@ i2c_sysfs_delete_device(struct device *dev, struct device_attribute *attr,
/* Make sure the device was added through sysfs */
res = -ENOENT;
mutex_lock(&core_lock);
list_for_each_entry_safe(client, next, &userspace_devices, detected) {
if (client->addr == addr && client->adapter == adap) {
i2c_lock_adapter(adap);
list_for_each_entry_safe(client, next, &adap->userspace_clients,
detected) {
if (client->addr == addr) {
dev_info(dev, "%s: Deleting device %s at 0x%02hx\n",
"delete_device", client->name, client->addr);
@@ -594,7 +626,7 @@ i2c_sysfs_delete_device(struct device *dev, struct device_attribute *attr,
break;
}
}
mutex_unlock(&core_lock);
i2c_unlock_adapter(adap);
if (res < 0)
dev_err(dev, "%s: Can't find device in list\n",
@@ -676,6 +708,7 @@ static int i2c_register_adapter(struct i2c_adapter *adap)
}
rt_mutex_init(&adap->bus_lock);
INIT_LIST_HEAD(&adap->userspace_clients);
/* Set default timeout to 1 second if not already set */
if (adap->timeout == 0)
@@ -878,14 +911,15 @@ int i2c_del_adapter(struct i2c_adapter *adap)
return res;
/* Remove devices instantiated from sysfs */
list_for_each_entry_safe(client, next, &userspace_devices, detected) {
if (client->adapter == adap) {
dev_dbg(&adap->dev, "Removing %s at 0x%x\n",
client->name, client->addr);
list_del(&client->detected);
i2c_unregister_device(client);
}
i2c_lock_adapter(adap);
list_for_each_entry_safe(client, next, &adap->userspace_clients,
detected) {
dev_dbg(&adap->dev, "Removing %s at 0x%x\n", client->name,
client->addr);
list_del(&client->detected);
i2c_unregister_device(client);
}
i2c_unlock_adapter(adap);
/* Detach any active clients. This can't fail, thus we do not
checking the returned value. */
@@ -1190,10 +1224,10 @@ EXPORT_SYMBOL(i2c_transfer);
*
* Returns negative errno, or else the number of bytes written.
*/
int i2c_master_send(struct i2c_client *client,const char *buf ,int count)
int i2c_master_send(struct i2c_client *client, const char *buf, int count)
{
int ret;
struct i2c_adapter *adap=client->adapter;
struct i2c_adapter *adap = client->adapter;
struct i2c_msg msg;
msg.addr = client->addr;
@@ -1217,9 +1251,9 @@ EXPORT_SYMBOL(i2c_master_send);
*
* Returns negative errno, or else the number of bytes read.
*/
int i2c_master_recv(struct i2c_client *client, char *buf ,int count)
int i2c_master_recv(struct i2c_client *client, char *buf, int count)
{
struct i2c_adapter *adap=client->adapter;
struct i2c_adapter *adap = client->adapter;
struct i2c_msg msg;
int ret;
@@ -1263,12 +1297,23 @@ static int i2c_detect_address(struct i2c_client *temp_client,
return 0;
/* Make sure there is something at this address */
if (i2c_smbus_xfer(adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL) < 0)
return 0;
if (addr == 0x73 && (adapter->class & I2C_CLASS_HWMON)) {
/* Special probe for FSC hwmon chips */
union i2c_smbus_data dummy;
/* Prevent 24RF08 corruption */
if ((addr & ~0x0f) == 0x50)
i2c_smbus_xfer(adapter, addr, 0, 0, 0, I2C_SMBUS_QUICK, NULL);
if (i2c_smbus_xfer(adapter, addr, 0, I2C_SMBUS_READ, 0,
I2C_SMBUS_BYTE_DATA, &dummy) < 0)
return 0;
} else {
if (i2c_smbus_xfer(adapter, addr, 0, I2C_SMBUS_WRITE, 0,
I2C_SMBUS_QUICK, NULL) < 0)
return 0;
/* Prevent 24RF08 corruption */
if ((addr & ~0x0f) == 0x50)
i2c_smbus_xfer(adapter, addr, 0, I2C_SMBUS_WRITE, 0,
I2C_SMBUS_QUICK, NULL);
}
/* Finally call the custom detection function */
memset(&info, 0, sizeof(struct i2c_board_info));
@@ -1410,7 +1455,7 @@ i2c_new_probed_device(struct i2c_adapter *adap,
}
EXPORT_SYMBOL_GPL(i2c_new_probed_device);
struct i2c_adapter* i2c_get_adapter(int id)
struct i2c_adapter *i2c_get_adapter(int id)
{
struct i2c_adapter *adapter;
@@ -1437,7 +1482,7 @@ static u8 crc8(u16 data)
{
int i;
for(i = 0; i < 8; i++) {
for (i = 0; i < 8; i++) {
if (data & 0x8000)
data = data ^ POLY;
data = data << 1;
@@ -1450,7 +1495,7 @@ static u8 i2c_smbus_pec(u8 crc, u8 *p, size_t count)
{
int i;
for(i = 0; i < count; i++)
for (i = 0; i < count; i++)
crc = crc8((crc ^ p[i]) << 8);
return crc;
}
@@ -1520,7 +1565,7 @@ EXPORT_SYMBOL(i2c_smbus_read_byte);
*/
s32 i2c_smbus_write_byte(struct i2c_client *client, u8 value)
{
return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
return i2c_smbus_xfer(client->adapter, client->addr, client->flags,
I2C_SMBUS_WRITE, value, I2C_SMBUS_BYTE, NULL);
}
EXPORT_SYMBOL(i2c_smbus_write_byte);
@@ -1558,9 +1603,9 @@ s32 i2c_smbus_write_byte_data(struct i2c_client *client, u8 command, u8 value)
{
union i2c_smbus_data data;
data.byte = value;
return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
I2C_SMBUS_WRITE,command,
I2C_SMBUS_BYTE_DATA,&data);
return i2c_smbus_xfer(client->adapter, client->addr, client->flags,
I2C_SMBUS_WRITE, command,
I2C_SMBUS_BYTE_DATA, &data);
}
EXPORT_SYMBOL(i2c_smbus_write_byte_data);
@@ -1597,9 +1642,9 @@ s32 i2c_smbus_write_word_data(struct i2c_client *client, u8 command, u16 value)
{
union i2c_smbus_data data;
data.word = value;
return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
I2C_SMBUS_WRITE,command,
I2C_SMBUS_WORD_DATA,&data);
return i2c_smbus_xfer(client->adapter, client->addr, client->flags,
I2C_SMBUS_WRITE, command,
I2C_SMBUS_WORD_DATA, &data);
}
EXPORT_SYMBOL(i2c_smbus_write_word_data);
@@ -1676,9 +1721,9 @@ s32 i2c_smbus_write_block_data(struct i2c_client *client, u8 command,
length = I2C_SMBUS_BLOCK_MAX;
data.block[0] = length;
memcpy(&data.block[1], values, length);
return i2c_smbus_xfer(client->adapter,client->addr,client->flags,
I2C_SMBUS_WRITE,command,
I2C_SMBUS_BLOCK_DATA,&data);
return i2c_smbus_xfer(client->adapter, client->addr, client->flags,
I2C_SMBUS_WRITE, command,
I2C_SMBUS_BLOCK_DATA, &data);
}
EXPORT_SYMBOL(i2c_smbus_write_block_data);
@@ -1720,10 +1765,10 @@ EXPORT_SYMBOL(i2c_smbus_write_i2c_block_data);
/* Simulate a SMBus command using the i2c protocol
No checking of parameters is done! */
static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
unsigned short flags,
char read_write, u8 command, int size,
union i2c_smbus_data * data)
static s32 i2c_smbus_xfer_emulated(struct i2c_adapter *adapter, u16 addr,
unsigned short flags,
char read_write, u8 command, int size,
union i2c_smbus_data *data)
{
/* So we need to generate a series of msgs. In the case of writing, we
need to use only one message; when reading, we need two. We initialize
@@ -1731,7 +1776,7 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
simpler. */
unsigned char msgbuf0[I2C_SMBUS_BLOCK_MAX+3];
unsigned char msgbuf1[I2C_SMBUS_BLOCK_MAX+2];
int num = read_write == I2C_SMBUS_READ?2:1;
int num = read_write == I2C_SMBUS_READ ? 2 : 1;
struct i2c_msg msg[2] = { { addr, flags, 1, msgbuf0 },
{ addr, flags | I2C_M_RD, 0, msgbuf1 }
};
@@ -1740,7 +1785,7 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
int status;
msgbuf0[0] = command;
switch(size) {
switch (size) {
case I2C_SMBUS_QUICK:
msg[0].len = 0;
/* Special case: The read/write field is used as data */
@@ -1767,7 +1812,7 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
if (read_write == I2C_SMBUS_READ)
msg[1].len = 2;
else {
msg[0].len=3;
msg[0].len = 3;
msgbuf0[1] = data->word & 0xff;
msgbuf0[2] = data->word >> 8;
}
@@ -1860,26 +1905,26 @@ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr,
}
if (read_write == I2C_SMBUS_READ)
switch(size) {
case I2C_SMBUS_BYTE:
data->byte = msgbuf0[0];
break;
case I2C_SMBUS_BYTE_DATA:
data->byte = msgbuf1[0];
break;
case I2C_SMBUS_WORD_DATA:
case I2C_SMBUS_PROC_CALL:
data->word = msgbuf1[0] | (msgbuf1[1] << 8);
break;
case I2C_SMBUS_I2C_BLOCK_DATA:
for (i = 0; i < data->block[0]; i++)
data->block[i+1] = msgbuf1[i];
break;
case I2C_SMBUS_BLOCK_DATA:
case I2C_SMBUS_BLOCK_PROC_CALL:
for (i = 0; i < msgbuf1[0] + 1; i++)
data->block[i] = msgbuf1[i];
break;
switch (size) {
case I2C_SMBUS_BYTE:
data->byte = msgbuf0[0];
break;
case I2C_SMBUS_BYTE_DATA:
data->byte = msgbuf1[0];
break;
case I2C_SMBUS_WORD_DATA:
case I2C_SMBUS_PROC_CALL:
data->word = msgbuf1[0] | (msgbuf1[1] << 8);
break;
case I2C_SMBUS_I2C_BLOCK_DATA:
for (i = 0; i < data->block[0]; i++)
data->block[i+1] = msgbuf1[i];
break;
case I2C_SMBUS_BLOCK_DATA:
case I2C_SMBUS_BLOCK_PROC_CALL:
for (i = 0; i < msgbuf1[0] + 1; i++)
data->block[i] = msgbuf1[i];
break;
}
return 0;
}
@@ -1924,7 +1969,7 @@ s32 i2c_smbus_xfer(struct i2c_adapter *adapter, u16 addr, unsigned short flags,
}
rt_mutex_unlock(&adapter->bus_lock);
} else
res = i2c_smbus_xfer_emulated(adapter,addr,flags,read_write,
res = i2c_smbus_xfer_emulated(adapter, addr, flags, read_write,
command, protocol, data);
return res;

36
drivers/i2c/i2c-dev.c
View File

@@ -35,7 +35,7 @@
#include <linux/i2c.h>
#include <linux/i2c-dev.h>
#include <linux/jiffies.h>
#include <asm/uaccess.h>
#include <linux/uaccess.h>
static struct i2c_driver i2cdev_driver;
@@ -132,45 +132,45 @@ static DEVICE_ATTR(name, S_IRUGO, show_adapter_name, NULL);
* needed by those system calls and by this SMBus interface.
*/
static ssize_t i2cdev_read (struct file *file, char __user *buf, size_t count,
loff_t *offset)
static ssize_t i2cdev_read(struct file *file, char __user *buf, size_t count,
loff_t *offset)
{
char *tmp;
int ret;
struct i2c_client *client = (struct i2c_client *)file->private_data;
struct i2c_client *client = file->private_data;
if (count > 8192)
count = 8192;
tmp = kmalloc(count,GFP_KERNEL);
if (tmp==NULL)
tmp = kmalloc(count, GFP_KERNEL);
if (tmp == NULL)
return -ENOMEM;
pr_debug("i2c-dev: i2c-%d reading %zu bytes.\n",
iminor(file->f_path.dentry->d_inode), count);
ret = i2c_master_recv(client,tmp,count);
ret = i2c_master_recv(client, tmp, count);
if (ret >= 0)
ret = copy_to_user(buf,tmp,count)?-EFAULT:ret;
ret = copy_to_user(buf, tmp, count) ? -EFAULT : ret;
kfree(tmp);
return ret;
}
static ssize_t i2cdev_write (struct file *file, const char __user *buf, size_t count,
loff_t *offset)
static ssize_t i2cdev_write(struct file *file, const char __user *buf,
size_t count, loff_t *offset)
{
int ret;
char *tmp;
struct i2c_client *client = (struct i2c_client *)file->private_data;
struct i2c_client *client = file->private_data;
if (count > 8192)
count = 8192;
tmp = kmalloc(count,GFP_KERNEL);
if (tmp==NULL)
tmp = kmalloc(count, GFP_KERNEL);
if (tmp == NULL)
return -ENOMEM;
if (copy_from_user(tmp,buf,count)) {
if (copy_from_user(tmp, buf, count)) {
kfree(tmp);
return -EFAULT;
}
@@ -178,7 +178,7 @@ static ssize_t i2cdev_write (struct file *file, const char __user *buf, size_t c
pr_debug("i2c-dev: i2c-%d writing %zu bytes.\n",
iminor(file->f_path.dentry->d_inode), count);
ret = i2c_master_send(client,tmp,count);
ret = i2c_master_send(client, tmp, count);
kfree(tmp);
return ret;
}
@@ -369,13 +369,13 @@ static noinline int i2cdev_ioctl_smbus(struct i2c_client *client,
static long i2cdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct i2c_client *client = (struct i2c_client *)file->private_data;
struct i2c_client *client = file->private_data;
unsigned long funcs;
dev_dbg(&client->adapter->dev, "ioctl, cmd=0x%02x, arg=0x%02lx\n",
cmd, arg);
switch ( cmd ) {
switch (cmd) {
case I2C_SLAVE:
case I2C_SLAVE_FORCE:
/* NOTE: devices set up to work with "new style" drivers
@@ -601,7 +601,7 @@ static void __exit i2c_dev_exit(void)
{
i2c_del_driver(&i2cdev_driver);
class_destroy(i2c_dev_class);
unregister_chrdev(I2C_MAJOR,"i2c");
unregister_chrdev(I2C_MAJOR, "i2c");
}
MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and "