// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2025 Analog Devices Inc. * Copyright (C) 2025 BayLibre, SAS */ #include #include #include #include #include #include #include #include #include #include static bool adi_util_sigma_delta_match(struct spi_offload_trigger *trigger, enum spi_offload_trigger_type type, u64 *args, u32 nargs) { return type == SPI_OFFLOAD_TRIGGER_DATA_READY && nargs == 0; } static const struct spi_offload_trigger_ops adi_util_sigma_delta_ops = { .match = adi_util_sigma_delta_match, }; static int adi_util_sigma_delta_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct spi_offload_trigger_info info = { .fwnode = dev_fwnode(dev), .ops = &adi_util_sigma_delta_ops, }; struct clk *clk; clk = devm_clk_get_enabled(dev, NULL); if (IS_ERR(clk)) return dev_err_probe(dev, PTR_ERR(clk), "Failed to get clock\n"); return devm_spi_offload_trigger_register(dev, &info); } static const struct of_device_id adi_util_sigma_delta_of_match_table[] = { { .compatible = "adi,util-sigma-delta-spi", }, { } }; MODULE_DEVICE_TABLE(of, adi_util_sigma_delta_of_match_table); static struct platform_driver adi_util_sigma_delta_driver = { .probe = adi_util_sigma_delta_probe, .driver = { .name = "adi-util-sigma-delta-spi", .of_match_table = adi_util_sigma_delta_of_match_table, }, }; module_platform_driver(adi_util_sigma_delta_driver); MODULE_AUTHOR("David Lechner "); MODULE_DESCRIPTION("ADI Sigma-Delta SPI offload trigger utility driver"); MODULE_LICENSE("GPL");