| 417 | } |
| 418 | |
| 419 | static rt_int32_t sdio_read_cccr(struct rt_mmcsd_card *card) |
| 420 | { |
| 421 | rt_int32_t ret; |
| 422 | rt_int32_t cccr_version; |
| 423 | rt_uint8_t data; |
| 424 | |
| 425 | rt_memset(&card->cccr, 0, sizeof(struct rt_sdio_cccr)); |
| 426 | |
| 427 | data = sdio_io_readb(card->sdio_function[0], SDIO_REG_CCCR_CCCR_REV, &ret); |
| 428 | if (ret) |
| 429 | goto out; |
| 430 | |
| 431 | cccr_version = data & 0x0f; |
| 432 | |
| 433 | if (cccr_version > SDIO_CCCR_REV_3_00) |
| 434 | { |
| 435 | LOG_E("unrecognised CCCR structure version %d", cccr_version); |
| 436 | |
| 437 | return -RT_ERROR; |
| 438 | } |
| 439 | |
| 440 | card->cccr.sdio_version = (data & 0xf0) >> 4; |
| 441 | |
| 442 | data = sdio_io_readb(card->sdio_function[0], SDIO_REG_CCCR_CARD_CAPS, &ret); |
| 443 | if (ret) |
| 444 | goto out; |
| 445 | |
| 446 | if (data & SDIO_CCCR_CAP_SMB) |
| 447 | card->cccr.multi_block = 1; |
| 448 | if (data & SDIO_CCCR_CAP_LSC) |
| 449 | card->cccr.low_speed = 1; |
| 450 | if (data & SDIO_CCCR_CAP_4BLS) |
| 451 | card->cccr.low_speed_4 = 1; |
| 452 | if (data & SDIO_CCCR_CAP_4BLS) |
| 453 | card->cccr.bus_width = 1; |
| 454 | |
| 455 | if (cccr_version >= SDIO_CCCR_REV_1_10) |
| 456 | { |
| 457 | data = sdio_io_readb(card->sdio_function[0], SDIO_REG_CCCR_POWER_CTRL, &ret); |
| 458 | if (ret) |
| 459 | goto out; |
| 460 | |
| 461 | if (data & SDIO_POWER_SMPC) |
| 462 | card->cccr.power_ctrl = 1; |
| 463 | } |
| 464 | |
| 465 | if (cccr_version >= SDIO_CCCR_REV_1_20) |
| 466 | { |
| 467 | data = sdio_io_readb(card->sdio_function[0], SDIO_REG_CCCR_SPEED, &ret); |
| 468 | if (ret) |
| 469 | goto out; |
| 470 | |
| 471 | if (data & SDIO_SPEED_SHS) |
| 472 | card->cccr.high_speed = 1; |
| 473 | } |
| 474 | |
| 475 | out: |
| 476 | return ret; |
no test coverage detected