diff options
Diffstat (limited to 'drivers/edgetpu/edgetpu-mobile-platform.c')
| -rw-r--r-- | drivers/edgetpu/edgetpu-mobile-platform.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/edgetpu/edgetpu-mobile-platform.c b/drivers/edgetpu/edgetpu-mobile-platform.c index 4e9cac0..af6bcb7 100644 --- a/drivers/edgetpu/edgetpu-mobile-platform.c +++ b/drivers/edgetpu/edgetpu-mobile-platform.c @@ -279,6 +279,38 @@ static void edgetpu_platform_remove_irq(struct edgetpu_mobile_platform_dev *etmd edgetpu_unregister_irq(etdev, etmdev->irq[i]); } +/* + * Fetch and set the firmware context region from device tree. + * + * Maybe be unused since not all chips need this. + */ +static int __maybe_unused +edgetpu_mobile_platform_set_fw_ctx_memory(struct edgetpu_mobile_platform_dev *etmdev) +{ + struct edgetpu_dev *etdev = &etmdev->edgetpu_dev; + struct device *dev = etdev->dev; + struct resource r; + struct device_node *np; + int ret; + + np = of_parse_phandle(dev->of_node, "memory-region", 1); + if (!np) { + etdev_warn(etdev, "No memory for firmware contexts"); + return -ENODEV; + } + + ret = of_address_to_resource(np, 0, &r); + of_node_put(np); + if (ret) { + etdev_warn(etdev, "No memory address for firmware contexts"); + return ret; + } + + etmdev->fw_ctx_paddr = r.start; + etmdev->fw_ctx_size = resource_size(&r); + return 0; +} + static int edgetpu_mobile_platform_probe(struct platform_device *pdev, struct edgetpu_mobile_platform_dev *etmdev) { |