static int mnemosyne_parse_dt(struct device* dev)
{
struct device_node *node= NULL;
u32 phys, base;
int ret;
pr_info("%s: init from device tree.\n", MNEMOSYNE_MODULE_NAME);
node = dev->of_node;
if (node == NULL) {
pr_err("%s, Can't find device_node", MNEMOSYNE_MODULE_NAME);
ret = -ENODEV;
goto PARSE_DT_ERR_OUT;
}
ret = of_property_read_u32(node, OF_PROP_PHYS_NAME, &phys);
if (ret) {
pr_err("%s: could not get %s for %s\n", MNEMOSYNE_MODULE_NAME, OF_PROP_PHYS_NAME, node->full_name);
goto PARSE_DT_ERR_OUT;
}
ret = of_property_read_u32(node, OF_PROP_BASE_NAME, &base);
if (ret) {
pr_err("%s: could not get %s for %s\n", MNEMOSYNE_MODULE_NAME, OF_PROP_BASE_NAME, node->full_name);
goto PARSE_DT_ERR_OUT;
}
mnemosyne_setup(phys, base);
PARSE_DT_ERR_OUT:
return ret;
}
static int mnemosyne_parse_pdata(struct device* dev)
{
int ret = 0;
struct mnemosyne_platform_data *pdata = (struct mnemosyne_platform_data *)dev->platform_data;
pr_info("%s: init from platform data.\n", MNEMOSYNE_MODULE_NAME);
if (pdata == NULL) {
pr_err("%s: No pdata\n", MNEMOSYNE_MODULE_NAME);
ret = -ENODEV;
goto PARSE_PDATA_ERR_OUT;
}
mnemosyne_setup(pdata->phys, pdata->base);
PARSE_PDATA_ERR_OUT:
return ret;
}
static int mnemosyne_parse_dt(struct device_node *node)
{
phys_addr_t phys = 0, size = 0;
struct device_node *pnode = NULL;
int ret;
pr_info("%s: init from device tree.\n", MNEMOSYNE_MODULE_NAME);
if (node == NULL) {
pr_err("%s: Can't find device_node", MNEMOSYNE_MODULE_NAME);
ret = -ENODEV;
goto PARSE_DT_ERR_OUT;
}
pnode = of_parse_phandle(node, "linux,contiguous-region", 0);
if (!pnode) {
pr_err("%s: mnemosyne memory is not reserved.\n", MNEMOSYNE_MODULE_NAME);
} else {
const __be32 *prop;
int addr_cells, size_cells;
prop = of_get_address(pnode, 0, NULL, NULL);
if (!prop) {
pr_err("%s: Can't find register property", MNEMOSYNE_MODULE_NAME);
ret = -ENODEV;
of_node_put(pnode);
goto PARSE_DT_ERR_OUT;
}
of_node_put(pnode);
addr_cells = of_n_addr_cells(pnode);
size_cells = of_n_size_cells(pnode);
phys = of_read_number(prop, addr_cells);
size = of_read_number(prop + addr_cells, size_cells);
}
ret = mnemosyne_setup(phys, size);
PARSE_DT_ERR_OUT:
return ret;
}
int mnemosyne_early_init(unsigned int phys, unsigned base)
{
pr_info("%s: init from early init.\n", MNEMOSYNE_MODULE_NAME);
return mnemosyne_setup(phys, base);
}
