| 363 | } |
| 364 | |
| 365 | static rt_err_t ofw_parse_irq_cells(struct rt_ofw_node *np, int index, struct rt_ofw_cell_args *out_irq_args) |
| 366 | { |
| 367 | rt_err_t err; |
| 368 | |
| 369 | /* |
| 370 | * interrupts-extended: |
| 371 | * |
| 372 | * The interrupts-extended property lists the interrupt(s) generated by a |
| 373 | * device. interrupts-extended should be used instead of interrupts when a |
| 374 | * device is connected to multiple interrupt controllers as it encodes a |
| 375 | * parent phandle with each interrupt specifier. Example: |
| 376 | * |
| 377 | * pic: interrupt-controller@0 { |
| 378 | * interrupt-controller; |
| 379 | * #interrupt-cells = <1>; |
| 380 | * }; |
| 381 | * |
| 382 | * gic: interrupt-controller@1 { |
| 383 | * interrupt-controller; |
| 384 | * #interrupt-cells = <3>; |
| 385 | * }; |
| 386 | * |
| 387 | * node: node { |
| 388 | * interrupts-extended = <&pic 9>, <&gic GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>; |
| 389 | * }; |
| 390 | * |
| 391 | * call `rt_ofw_parse_phandle_cells` to get irq info; |
| 392 | */ |
| 393 | |
| 394 | err = rt_ofw_parse_phandle_cells(np, "interrupts-extended", "#interrupt-cells", index, out_irq_args); |
| 395 | |
| 396 | do { |
| 397 | int interrupt_cells; |
| 398 | const fdt32_t *cell; |
| 399 | rt_ssize_t interrupt_len; |
| 400 | struct rt_ofw_node *ic_np; |
| 401 | |
| 402 | if (!err) |
| 403 | { |
| 404 | break; |
| 405 | } |
| 406 | |
| 407 | /* |
| 408 | * interrupts (old style): |
| 409 | * |
| 410 | * The interrupts property of a device node defines the interrupt or |
| 411 | * interrupts that are generated by the device. The value of the |
| 412 | * interrupts property consists of an arbitrary number of interrupt |
| 413 | * specifiers. The format of an interrupt specifier is defined by the |
| 414 | * binding of the interrupt domain root. |
| 415 | * interrupts is overridden by the interrupts-extended property and |
| 416 | * normally only one or the other should be used. Example: |
| 417 | * |
| 418 | * pic: interrupt-controller@0 { |
| 419 | * interrupt-controller; |
| 420 | * #interrupt-cells = <1>; |
| 421 | * }; |
| 422 | * |
no test coverage detected