Commit 6ea28cb0 authored by Andrey Filippov's avatar Andrey Filippov

merged with master

parents ab3b8962 5abbb5ae
......@@ -96,19 +96,28 @@ static int bitstream_loaded(u32 *ptr)
return 0;
}
static int elphel_check_load(struct device *dev)
static void elphel_defer_load(struct device *dev)
{
int ret = 0;
bool check_flag = true;
u32 *ctrl_ptr = ioremap_nocache(BITSTREAM_CTRL_ADDR, 4);
if (!bitstream_loaded(ctrl_ptr)) {
ret = -1;
dev_err(dev, "FPGA bitstream is not loaded or bitstream "
"does not contain AHCI controller. Remove driver, load bitstream and try again\n");
dev_info(dev, "AHCI driver loading is deferred. Load bitstream and write 1 into "
"/sys/devices/soc0/amba@0/80000000.elphel-ahci/load_module to continue\n");
while (check_flag) {
if (load_driver) {
if (bitstream_loaded(ctrl_ptr)) {
check_flag = false;
} else {
dev_err(dev, "FPGA bitstream is not loaded or bitstream "
"does not contain AHCI controller\n");
load_driver = false;
}
} else {
msleep(1000);
}
}
load_driver = false;
iounmap(ctrl_ptr);
return ret;
}
/** Calculate the difference between two time stamps and return it in microseconds */
......@@ -308,16 +317,12 @@ static int elphel_drv_probe(struct platform_device *pdev)
const struct of_device_id *match;
struct ata_host *host;
ret = elphel_check_load(dev);
if (ret < 0) {
return ret;
}
if (&dev->kobj) {
ret = sysfs_create_group(&dev->kobj, &dev_attr_root_group);
if (ret < 0)
return ret;
}
elphel_defer_load(dev);
dev_info(&pdev->dev, "probing Elphel AHCI driver");
......
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