static void __exit test_hwspinlock_exit(void)
{
int ret;
ret = hwspin_lock_free(hwlock);
if (ret)
pr_err("%s: free failed: %d\n", __func__, ret);
else
pr_info("%s: freed lock %d\n", __func__, hwspin_lock_get_id(hwlock));
return;
}
static int __init test_hwspinlock_init(void)
{
hwlock = hwspin_lock_request();
if (!hwlock) {
pr_err("%s: request failed\n", __func__);
return -1;
}
pr_info("%s: requested lock %d\n", __func__, hwspin_lock_get_id(hwlock));
return 0;
}
/**
* omap_i2c_get_hwspinlockid - Get HWSPINLOCK ID for I2C device
* @dev: I2C device
*
* returns the hwspinlock id or -1 if does not exist
*/
int omap_i2c_get_hwspinlockid(struct device *dev)
{
struct omap_i2c_bus_platform_data *pdata;
pdata = dev_get_platdata(dev);
if (!pdata) {
dev_err(dev, "%s: platform data is missing\n", __func__);
return -EINVAL;
}
if (pdata->handle != NULL)
return hwspin_lock_get_id(pdata->handle);
else
return -1;
}
static int __init early_init_hwlocks(void)
{
int i;
struct hwspinlock **plock;
arch_hwlocks_implemented();
for (i = 0; i < HWSPINLOCK_ID_TOTAL_NUMS; ++i) {
if (hwlocks_implemented[i]) {
plock = &hwlocks[i];
*plock = hwspin_lock_request_specific(i);
if (WARN_ON(IS_ERR_OR_NULL(*plock)))
*plock = NULL;
else
pr_info("early alloc hwspinlock id %d\n",
hwspin_lock_get_id(*plock));
}
}
return 0;
}