3  * FPGA Region - Device Tree support for FPGA programming under Linux
8 #include <linux/fpga/fpga-bridge.h>
9 #include <linux/fpga/fpga-mgr.h>
10 #include <linux/fpga/fpga-region.h>
20 	{ .compatible = "fpga-region", },
26  * of_fpga_region_find - find FPGA region
27  * @np: device node of FPGA Region
31  * Returns FPGA Region struct or NULL
39  * of_fpga_region_get_mgr - get reference for FPGA manager
40  * @np: device node of FPGA region
42  * Get FPGA Manager from "fpga-mgr" property or from ancestor region.
46  * Return: fpga manager struct or IS_ERR() condition containing error code.
55 		if (of_device_is_compatible(np, "fpga-region")) {  in of_fpga_region_get_mgr()
56 			mgr_node = of_parse_phandle(np, "fpga-mgr", 0);  in of_fpga_region_get_mgr()
73  * @region: FPGA region
76  * specified by "fpga-bridges" property.  Note that the
107 	br = of_parse_phandle(info->overlay, "fpga-bridges", 0);  in of_fpga_region_get_bridges()
116 		br = of_parse_phandle(np, "fpga-bridges", i);  in of_fpga_region_get_bridges()
145  * If the overlay adds child FPGA regions, they are not allowed to have
148  * Return 0 for OK or -EINVAL if child FPGA region adds firmware-name.
172 		pr_err("firmware-name not allowed in child FPGA region: %pOF",  in child_regions_with_firmware()
181  * @region: FPGA region
182  * @overlay: overlay applied to the FPGA region
184  * Given an overlay applied to a FPGA region, parse the FPGA image specific
188  *   NULL if overlay doesn't direct us to program the FPGA.
207 	 * Reject overlay if child FPGA Regions added in the overlay have  in of_fpga_region_parse_ov()
208 	 * firmware-name property (would mean that an FPGA region that has  in of_fpga_region_parse_ov()
209 	 * not been added to the live tree yet is doing FPGA programming).  in of_fpga_region_parse_ov()
221 	/* Read FPGA region properties from the overlay */  in of_fpga_region_parse_ov()
222 	if (of_property_read_bool(overlay, "partial-fpga-config"))  in of_fpga_region_parse_ov()
225 	if (of_property_read_bool(overlay, "external-fpga-config"))  in of_fpga_region_parse_ov()
228 	if (of_property_read_bool(overlay, "encrypted-fpga-config"))  in of_fpga_region_parse_ov()
248 	/* If overlay is not programming the FPGA, don't need FPGA image info */  in of_fpga_region_parse_ov()
255 	 * If overlay informs us FPGA was externally programmed, specifying  in of_fpga_region_parse_ov()
259 		dev_err(dev, "error: specified firmware and external-fpga-config");  in of_fpga_region_parse_ov()
273  * @region: FPGA region that the overlay was applied to
276  * Called when an overlay targeted to a FPGA Region is about to be applied.
277  * Parses the overlay for properties that influence how the FPGA will be
278  * programmed and does some checking. If the checks pass, programs the FPGA.
295 	/* If overlay doesn't program the FPGA, accept it anyway. */  in of_fpga_region_notify_pre_apply()
318  * @region: FPGA region that was targeted by the overlay that was removed
322  * FPGA region.
339  * This notifier handles programming a FPGA when a "firmware-name" property is
340  * added to a fpga-region.
342  * Returns NOTIFY_OK or error if FPGA programming fails.
403 	/* Find the FPGA mgr specified by region or parent region. */  in of_fpga_region_probe()
421 	dev_info(dev, "FPGA Region probed\n");  in of_fpga_region_probe()
445 		.name	= "of-fpga-region",
482 MODULE_DESCRIPTION("FPGA Region");