mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-28 18:51:56 -04:00
fsi: scom: Major overhaul
This was too hard to split ... this adds a number of features to the SCOM user interface: - Support for indirect SCOMs - read()/write() interface now handle errors and retries - New ioctl() "raw" interface for use by debuggers Signed-off-by: Benjamin Herrenschmidt <[email protected]> Reviewed-by: Eddie James <[email protected]> Reviewed-by: Alistair Popple <[email protected]>
This commit is contained in:
Benjamin Herrenschmidt
parent
f143304442
commit
6b293258cd
2 changed files with 452 additions and 30 deletions
|
|
@ -24,6 +24,8 @@
|
|||
#include <linux/list.h>
|
||||
#include <linux/idr.h>
|
||||
|
||||
#include <uapi/linux/fsi.h>
|
||||
|
||||
#define FSI_ENGID_SCOM 0x5
|
||||
|
||||
/* SCOM engine register set */
|
||||
|
|
@ -41,14 +43,36 @@
|
|||
/* Status register bits */
|
||||
#define SCOM_STATUS_ERR_SUMMARY 0x80000000
|
||||
#define SCOM_STATUS_PROTECTION 0x01000000
|
||||
#define SCOM_STATUS_PARITY 0x04000000
|
||||
#define SCOM_STATUS_PIB_ABORT 0x00100000
|
||||
#define SCOM_STATUS_PIB_RESP_MASK 0x00007000
|
||||
#define SCOM_STATUS_PIB_RESP_SHIFT 12
|
||||
|
||||
#define SCOM_STATUS_ANY_ERR (SCOM_STATUS_ERR_SUMMARY | \
|
||||
SCOM_STATUS_PROTECTION | \
|
||||
SCOM_STATUS_PARITY | \
|
||||
SCOM_STATUS_PIB_ABORT | \
|
||||
SCOM_STATUS_PIB_RESP_MASK)
|
||||
/* SCOM address encodings */
|
||||
#define XSCOM_ADDR_IND_FLAG BIT_ULL(63)
|
||||
#define XSCOM_ADDR_INF_FORM1 BIT_ULL(60)
|
||||
|
||||
/* SCOM indirect stuff */
|
||||
#define XSCOM_ADDR_DIRECT_PART 0x7fffffffull
|
||||
#define XSCOM_ADDR_INDIRECT_PART 0x000fffff00000000ull
|
||||
#define XSCOM_DATA_IND_READ BIT_ULL(63)
|
||||
#define XSCOM_DATA_IND_COMPLETE BIT_ULL(31)
|
||||
#define XSCOM_DATA_IND_ERR_MASK 0x70000000ull
|
||||
#define XSCOM_DATA_IND_ERR_SHIFT 28
|
||||
#define XSCOM_DATA_IND_DATA 0x0000ffffull
|
||||
#define XSCOM_DATA_IND_FORM1_DATA 0x000fffffffffffffull
|
||||
#define XSCOM_ADDR_FORM1_LOW 0x000ffffffffull
|
||||
#define XSCOM_ADDR_FORM1_HI 0xfff00000000ull
|
||||
#define XSCOM_ADDR_FORM1_HI_SHIFT 20
|
||||
|
||||
/* Retries */
|
||||
#define SCOM_MAX_RETRIES 100 /* Retries on busy */
|
||||
#define SCOM_MAX_IND_RETRIES 10 /* Retries indirect not ready */
|
||||
|
||||
struct scom_device {
|
||||
struct list_head link;
|
||||
|
|
@ -56,7 +80,7 @@ struct scom_device {
|
|||
struct miscdevice mdev;
|
||||
struct mutex lock;
|
||||
char name[32];
|
||||
int idx;
|
||||
int idx;
|
||||
};
|
||||
|
||||
#define to_scom_dev(x) container_of((x), struct scom_device, mdev)
|
||||
|
|
@ -65,80 +89,304 @@ static struct list_head scom_devices;
|
|||
|
||||
static DEFINE_IDA(scom_ida);
|
||||
|
||||
static int put_scom(struct scom_device *scom_dev, uint64_t value,
|
||||
uint32_t addr)
|
||||
static int __put_scom(struct scom_device *scom_dev, uint64_t value,
|
||||
uint32_t addr, uint32_t *status)
|
||||
{
|
||||
__be32 data;
|
||||
__be32 data, raw_status;
|
||||
int rc;
|
||||
|
||||
mutex_lock(&scom_dev->lock);
|
||||
|
||||
data = cpu_to_be32((value >> 32) & 0xffffffff);
|
||||
rc = fsi_device_write(scom_dev->fsi_dev, SCOM_DATA0_REG, &data,
|
||||
sizeof(uint32_t));
|
||||
if (rc)
|
||||
goto bail;
|
||||
return rc;
|
||||
|
||||
data = cpu_to_be32(value & 0xffffffff);
|
||||
rc = fsi_device_write(scom_dev->fsi_dev, SCOM_DATA1_REG, &data,
|
||||
sizeof(uint32_t));
|
||||
if (rc)
|
||||
goto bail;
|
||||
return rc;
|
||||
|
||||
data = cpu_to_be32(SCOM_WRITE_CMD | addr);
|
||||
rc = fsi_device_write(scom_dev->fsi_dev, SCOM_CMD_REG, &data,
|
||||
sizeof(uint32_t));
|
||||
bail:
|
||||
mutex_unlock(&scom_dev->lock);
|
||||
return rc;
|
||||
if (rc)
|
||||
return rc;
|
||||
rc = fsi_device_read(scom_dev->fsi_dev, SCOM_STATUS_REG, &raw_status,
|
||||
sizeof(uint32_t));
|
||||
if (rc)
|
||||
return rc;
|
||||
*status = be32_to_cpu(raw_status);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int get_scom(struct scom_device *scom_dev, uint64_t *value,
|
||||
uint32_t addr)
|
||||
static int __get_scom(struct scom_device *scom_dev, uint64_t *value,
|
||||
uint32_t addr, uint32_t *status)
|
||||
{
|
||||
__be32 result, data;
|
||||
__be32 data, raw_status;
|
||||
int rc;
|
||||
|
||||
|
||||
mutex_lock(&scom_dev->lock);
|
||||
*value = 0ULL;
|
||||
data = cpu_to_be32(SCOM_READ_CMD | addr);
|
||||
rc = fsi_device_write(scom_dev->fsi_dev, SCOM_CMD_REG, &data,
|
||||
sizeof(uint32_t));
|
||||
if (rc)
|
||||
goto bail;
|
||||
return rc;
|
||||
rc = fsi_device_read(scom_dev->fsi_dev, SCOM_STATUS_REG, &raw_status,
|
||||
sizeof(uint32_t));
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
rc = fsi_device_read(scom_dev->fsi_dev, SCOM_DATA0_REG, &result,
|
||||
/*
|
||||
* Read the data registers even on error, so we don't have
|
||||
* to interpret the status register here.
|
||||
*/
|
||||
rc = fsi_device_read(scom_dev->fsi_dev, SCOM_DATA0_REG, &data,
|
||||
sizeof(uint32_t));
|
||||
if (rc)
|
||||
goto bail;
|
||||
|
||||
*value |= (uint64_t)be32_to_cpu(result) << 32;
|
||||
rc = fsi_device_read(scom_dev->fsi_dev, SCOM_DATA1_REG, &result,
|
||||
return rc;
|
||||
*value |= (uint64_t)be32_to_cpu(data) << 32;
|
||||
rc = fsi_device_read(scom_dev->fsi_dev, SCOM_DATA1_REG, &data,
|
||||
sizeof(uint32_t));
|
||||
if (rc)
|
||||
goto bail;
|
||||
return rc;
|
||||
*value |= be32_to_cpu(data);
|
||||
*status = be32_to_cpu(raw_status);
|
||||
|
||||
*value |= be32_to_cpu(result);
|
||||
bail:
|
||||
mutex_unlock(&scom_dev->lock);
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int put_indirect_scom_form0(struct scom_device *scom, uint64_t value,
|
||||
uint64_t addr, uint32_t *status)
|
||||
{
|
||||
uint64_t ind_data, ind_addr;
|
||||
int rc, retries, err = 0;
|
||||
|
||||
if (value & ~XSCOM_DATA_IND_DATA)
|
||||
return -EINVAL;
|
||||
|
||||
ind_addr = addr & XSCOM_ADDR_DIRECT_PART;
|
||||
ind_data = (addr & XSCOM_ADDR_INDIRECT_PART) | value;
|
||||
rc = __put_scom(scom, ind_data, ind_addr, status);
|
||||
if (rc || (*status & SCOM_STATUS_ANY_ERR))
|
||||
return rc;
|
||||
|
||||
for (retries = 0; retries < SCOM_MAX_IND_RETRIES; retries++) {
|
||||
rc = __get_scom(scom, &ind_data, addr, status);
|
||||
if (rc || (*status & SCOM_STATUS_ANY_ERR))
|
||||
return rc;
|
||||
|
||||
err = (ind_data & XSCOM_DATA_IND_ERR_MASK) >> XSCOM_DATA_IND_ERR_SHIFT;
|
||||
*status = err << SCOM_STATUS_PIB_RESP_SHIFT;
|
||||
if ((ind_data & XSCOM_DATA_IND_COMPLETE) || (err != SCOM_PIB_BLOCKED))
|
||||
return 0;
|
||||
|
||||
msleep(1);
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int put_indirect_scom_form1(struct scom_device *scom, uint64_t value,
|
||||
uint64_t addr, uint32_t *status)
|
||||
{
|
||||
uint64_t ind_data, ind_addr;
|
||||
|
||||
if (value & ~XSCOM_DATA_IND_FORM1_DATA)
|
||||
return -EINVAL;
|
||||
|
||||
ind_addr = addr & XSCOM_ADDR_FORM1_LOW;
|
||||
ind_data = value | (addr & XSCOM_ADDR_FORM1_HI) << XSCOM_ADDR_FORM1_HI_SHIFT;
|
||||
return __put_scom(scom, ind_data, ind_addr, status);
|
||||
}
|
||||
|
||||
static int get_indirect_scom_form0(struct scom_device *scom, uint64_t *value,
|
||||
uint64_t addr, uint32_t *status)
|
||||
{
|
||||
uint64_t ind_data, ind_addr;
|
||||
int rc, retries, err = 0;
|
||||
|
||||
ind_addr = addr & XSCOM_ADDR_DIRECT_PART;
|
||||
ind_data = (addr & XSCOM_ADDR_INDIRECT_PART) | XSCOM_DATA_IND_READ;
|
||||
rc = __put_scom(scom, ind_data, ind_addr, status);
|
||||
if (rc || (*status & SCOM_STATUS_ANY_ERR))
|
||||
return rc;
|
||||
|
||||
for (retries = 0; retries < SCOM_MAX_IND_RETRIES; retries++) {
|
||||
rc = __get_scom(scom, &ind_data, addr, status);
|
||||
if (rc || (*status & SCOM_STATUS_ANY_ERR))
|
||||
return rc;
|
||||
|
||||
err = (ind_data & XSCOM_DATA_IND_ERR_MASK) >> XSCOM_DATA_IND_ERR_SHIFT;
|
||||
*status = err << SCOM_STATUS_PIB_RESP_SHIFT;
|
||||
*value = ind_data & XSCOM_DATA_IND_DATA;
|
||||
|
||||
if ((ind_data & XSCOM_DATA_IND_COMPLETE) || (err != SCOM_PIB_BLOCKED))
|
||||
return 0;
|
||||
|
||||
msleep(1);
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int raw_put_scom(struct scom_device *scom, uint64_t value,
|
||||
uint64_t addr, uint32_t *status)
|
||||
{
|
||||
if (addr & XSCOM_ADDR_IND_FLAG) {
|
||||
if (addr & XSCOM_ADDR_INF_FORM1)
|
||||
return put_indirect_scom_form1(scom, value, addr, status);
|
||||
else
|
||||
return put_indirect_scom_form0(scom, value, addr, status);
|
||||
} else
|
||||
return __put_scom(scom, value, addr, status);
|
||||
}
|
||||
|
||||
static int raw_get_scom(struct scom_device *scom, uint64_t *value,
|
||||
uint64_t addr, uint32_t *status)
|
||||
{
|
||||
if (addr & XSCOM_ADDR_IND_FLAG) {
|
||||
if (addr & XSCOM_ADDR_INF_FORM1)
|
||||
return -ENXIO;
|
||||
return get_indirect_scom_form0(scom, value, addr, status);
|
||||
} else
|
||||
return __get_scom(scom, value, addr, status);
|
||||
}
|
||||
|
||||
static int handle_fsi2pib_status(struct scom_device *scom, uint32_t status)
|
||||
{
|
||||
uint32_t dummy = -1;
|
||||
|
||||
if (status & SCOM_STATUS_PROTECTION)
|
||||
return -EPERM;
|
||||
if (status & SCOM_STATUS_PARITY) {
|
||||
fsi_device_write(scom->fsi_dev, SCOM_FSI2PIB_RESET_REG, &dummy,
|
||||
sizeof(uint32_t));
|
||||
return -EIO;
|
||||
}
|
||||
/* Return -EBUSY on PIB abort to force a retry */
|
||||
if (status & SCOM_STATUS_PIB_ABORT)
|
||||
return -EBUSY;
|
||||
if (status & SCOM_STATUS_ERR_SUMMARY) {
|
||||
fsi_device_write(scom->fsi_dev, SCOM_FSI2PIB_RESET_REG, &dummy,
|
||||
sizeof(uint32_t));
|
||||
return -EIO;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int handle_pib_status(struct scom_device *scom, uint8_t status)
|
||||
{
|
||||
uint32_t dummy = -1;
|
||||
|
||||
if (status == SCOM_PIB_SUCCESS)
|
||||
return 0;
|
||||
if (status == SCOM_PIB_BLOCKED)
|
||||
return -EBUSY;
|
||||
|
||||
/* Reset the bridge */
|
||||
fsi_device_write(scom->fsi_dev, SCOM_FSI2PIB_RESET_REG, &dummy,
|
||||
sizeof(uint32_t));
|
||||
|
||||
switch(status) {
|
||||
case SCOM_PIB_OFFLINE:
|
||||
return -ENODEV;
|
||||
case SCOM_PIB_BAD_ADDR:
|
||||
return -ENXIO;
|
||||
case SCOM_PIB_TIMEOUT:
|
||||
return -ETIMEDOUT;
|
||||
case SCOM_PIB_PARTIAL:
|
||||
case SCOM_PIB_CLK_ERR:
|
||||
case SCOM_PIB_PARITY_ERR:
|
||||
default:
|
||||
return -EIO;
|
||||
}
|
||||
}
|
||||
|
||||
static int put_scom(struct scom_device *scom, uint64_t value,
|
||||
uint64_t addr)
|
||||
{
|
||||
uint32_t status, dummy = -1;
|
||||
int rc, retries;
|
||||
|
||||
for (retries = 0; retries < SCOM_MAX_RETRIES; retries++) {
|
||||
rc = raw_put_scom(scom, value, addr, &status);
|
||||
if (rc) {
|
||||
/* Try resetting the bridge if FSI fails */
|
||||
if (rc != -ENODEV && retries == 0) {
|
||||
fsi_device_write(scom->fsi_dev, SCOM_FSI2PIB_RESET_REG,
|
||||
&dummy, sizeof(uint32_t));
|
||||
rc = -EBUSY;
|
||||
} else
|
||||
return rc;
|
||||
} else
|
||||
rc = handle_fsi2pib_status(scom, status);
|
||||
if (rc && rc != -EBUSY)
|
||||
break;
|
||||
if (rc == 0) {
|
||||
rc = handle_pib_status(scom,
|
||||
(status & SCOM_STATUS_PIB_RESP_MASK)
|
||||
>> SCOM_STATUS_PIB_RESP_SHIFT);
|
||||
if (rc && rc != -EBUSY)
|
||||
break;
|
||||
}
|
||||
if (rc == 0)
|
||||
break;
|
||||
msleep(1);
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int get_scom(struct scom_device *scom, uint64_t *value,
|
||||
uint64_t addr)
|
||||
{
|
||||
uint32_t status, dummy = -1;
|
||||
int rc, retries;
|
||||
|
||||
for (retries = 0; retries < SCOM_MAX_RETRIES; retries++) {
|
||||
rc = raw_get_scom(scom, value, addr, &status);
|
||||
if (rc) {
|
||||
/* Try resetting the bridge if FSI fails */
|
||||
if (rc != -ENODEV && retries == 0) {
|
||||
fsi_device_write(scom->fsi_dev, SCOM_FSI2PIB_RESET_REG,
|
||||
&dummy, sizeof(uint32_t));
|
||||
rc = -EBUSY;
|
||||
} else
|
||||
return rc;
|
||||
} else
|
||||
rc = handle_fsi2pib_status(scom, status);
|
||||
if (rc && rc != -EBUSY)
|
||||
break;
|
||||
if (rc == 0) {
|
||||
rc = handle_pib_status(scom,
|
||||
(status & SCOM_STATUS_PIB_RESP_MASK)
|
||||
>> SCOM_STATUS_PIB_RESP_SHIFT);
|
||||
if (rc && rc != -EBUSY)
|
||||
break;
|
||||
}
|
||||
if (rc == 0)
|
||||
break;
|
||||
msleep(1);
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
static ssize_t scom_read(struct file *filep, char __user *buf, size_t len,
|
||||
loff_t *offset)
|
||||
{
|
||||
int rc;
|
||||
struct miscdevice *mdev =
|
||||
(struct miscdevice *)filep->private_data;
|
||||
struct scom_device *scom = to_scom_dev(mdev);
|
||||
struct device *dev = &scom->fsi_dev->dev;
|
||||
uint64_t val;
|
||||
int rc;
|
||||
|
||||
if (len != sizeof(uint64_t))
|
||||
return -EINVAL;
|
||||
|
||||
mutex_lock(&scom->lock);
|
||||
rc = get_scom(scom, &val, *offset);
|
||||
mutex_unlock(&scom->lock);
|
||||
if (rc) {
|
||||
dev_dbg(dev, "get_scom fail:%d\n", rc);
|
||||
return rc;
|
||||
|
|
@ -169,7 +417,9 @@ static ssize_t scom_write(struct file *filep, const char __user *buf,
|
|||
return -EINVAL;
|
||||
}
|
||||
|
||||
mutex_lock(&scom->lock);
|
||||
rc = put_scom(scom, val, *offset);
|
||||
mutex_unlock(&scom->lock);
|
||||
if (rc) {
|
||||
dev_dbg(dev, "put_scom failed with:%d\n", rc);
|
||||
return rc;
|
||||
|
|
@ -193,11 +443,125 @@ static loff_t scom_llseek(struct file *file, loff_t offset, int whence)
|
|||
return offset;
|
||||
}
|
||||
|
||||
static void raw_convert_status(struct scom_access *acc, uint32_t status)
|
||||
{
|
||||
acc->pib_status = (status & SCOM_STATUS_PIB_RESP_MASK) >>
|
||||
SCOM_STATUS_PIB_RESP_SHIFT;
|
||||
acc->intf_errors = 0;
|
||||
|
||||
if (status & SCOM_STATUS_PROTECTION)
|
||||
acc->intf_errors |= SCOM_INTF_ERR_PROTECTION;
|
||||
else if (status & SCOM_STATUS_PARITY)
|
||||
acc->intf_errors |= SCOM_INTF_ERR_PARITY;
|
||||
else if (status & SCOM_STATUS_PIB_ABORT)
|
||||
acc->intf_errors |= SCOM_INTF_ERR_ABORT;
|
||||
else if (status & SCOM_STATUS_ERR_SUMMARY)
|
||||
acc->intf_errors |= SCOM_INTF_ERR_UNKNOWN;
|
||||
}
|
||||
|
||||
static int scom_raw_read(struct scom_device *scom, void __user *argp)
|
||||
{
|
||||
struct scom_access acc;
|
||||
uint32_t status;
|
||||
int rc;
|
||||
|
||||
if (copy_from_user(&acc, argp, sizeof(struct scom_access)))
|
||||
return -EFAULT;
|
||||
|
||||
rc = raw_get_scom(scom, &acc.data, acc.addr, &status);
|
||||
if (rc)
|
||||
return rc;
|
||||
raw_convert_status(&acc, status);
|
||||
if (copy_to_user(argp, &acc, sizeof(struct scom_access)))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int scom_raw_write(struct scom_device *scom, void __user *argp)
|
||||
{
|
||||
u64 prev_data, mask, data;
|
||||
struct scom_access acc;
|
||||
uint32_t status;
|
||||
int rc;
|
||||
|
||||
if (copy_from_user(&acc, argp, sizeof(struct scom_access)))
|
||||
return -EFAULT;
|
||||
|
||||
if (acc.mask) {
|
||||
rc = raw_get_scom(scom, &prev_data, acc.addr, &status);
|
||||
if (rc)
|
||||
return rc;
|
||||
if (status & SCOM_STATUS_ANY_ERR)
|
||||
goto fail;
|
||||
mask = acc.mask;
|
||||
} else {
|
||||
prev_data = mask = -1ull;
|
||||
}
|
||||
data = (prev_data & ~mask) | (acc.data & mask);
|
||||
rc = raw_put_scom(scom, data, acc.addr, &status);
|
||||
if (rc)
|
||||
return rc;
|
||||
fail:
|
||||
raw_convert_status(&acc, status);
|
||||
if (copy_to_user(argp, &acc, sizeof(struct scom_access)))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int scom_reset(struct scom_device *scom, void __user *argp)
|
||||
{
|
||||
uint32_t flags, dummy = -1;
|
||||
int rc = 0;
|
||||
|
||||
if (get_user(flags, (__u32 __user *)argp))
|
||||
return -EFAULT;
|
||||
if (flags & SCOM_RESET_PIB)
|
||||
rc = fsi_device_write(scom->fsi_dev, SCOM_PIB_RESET_REG, &dummy,
|
||||
sizeof(uint32_t));
|
||||
if (!rc && (flags & (SCOM_RESET_PIB | SCOM_RESET_INTF)))
|
||||
rc = fsi_device_write(scom->fsi_dev, SCOM_FSI2PIB_RESET_REG, &dummy,
|
||||
sizeof(uint32_t));
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int scom_check(struct scom_device *scom, void __user *argp)
|
||||
{
|
||||
/* Still need to find out how to get "protected" */
|
||||
return put_user(SCOM_CHECK_SUPPORTED, (__u32 __user *)argp);
|
||||
}
|
||||
|
||||
static long scom_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
struct miscdevice *mdev = file->private_data;
|
||||
struct scom_device *scom = to_scom_dev(mdev);
|
||||
void __user *argp = (void __user *)arg;
|
||||
int rc = -ENOTTY;
|
||||
|
||||
mutex_lock(&scom->lock);
|
||||
switch(cmd) {
|
||||
case FSI_SCOM_CHECK:
|
||||
rc = scom_check(scom, argp);
|
||||
break;
|
||||
case FSI_SCOM_READ:
|
||||
rc = scom_raw_read(scom, argp);
|
||||
break;
|
||||
case FSI_SCOM_WRITE:
|
||||
rc = scom_raw_write(scom, argp);
|
||||
break;
|
||||
case FSI_SCOM_RESET:
|
||||
rc = scom_reset(scom, argp);
|
||||
break;
|
||||
}
|
||||
mutex_unlock(&scom->lock);
|
||||
return rc;
|
||||
}
|
||||
|
||||
static const struct file_operations scom_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.llseek = scom_llseek,
|
||||
.read = scom_read,
|
||||
.write = scom_write,
|
||||
.owner = THIS_MODULE,
|
||||
.llseek = scom_llseek,
|
||||
.read = scom_read,
|
||||
.write = scom_write,
|
||||
.unlocked_ioctl = scom_ioctl,
|
||||
};
|
||||
|
||||
static int scom_probe(struct device *dev)
|
||||
|
|
|
|||
Loading…
Reference in a new issue