| 61 | |
| 62 | |
| 63 | rt_int32_t sdio_io_send_op_cond(struct rt_mmcsd_host *host, |
| 64 | rt_uint32_t ocr, |
| 65 | rt_uint32_t *cmd5_resp) |
| 66 | { |
| 67 | struct rt_mmcsd_cmd cmd; |
| 68 | rt_int32_t i, err = 0; |
| 69 | |
| 70 | RT_ASSERT(host != RT_NULL); |
| 71 | |
| 72 | rt_memset(&cmd, 0, sizeof(struct rt_mmcsd_cmd)); |
| 73 | |
| 74 | cmd.cmd_code = SD_IO_SEND_OP_COND; |
| 75 | cmd.arg = ocr; |
| 76 | cmd.flags = RESP_SPI_R4 | RESP_R4 | CMD_BCR; |
| 77 | |
| 78 | for (i = 100; i; i--) |
| 79 | { |
| 80 | err = mmcsd_send_cmd(host, &cmd, 0); |
| 81 | if (err) |
| 82 | break; |
| 83 | |
| 84 | /* if we're just probing, do a single pass */ |
| 85 | if (ocr == 0) |
| 86 | break; |
| 87 | |
| 88 | /* otherwise wait until reset completes */ |
| 89 | if (controller_is_spi(host)) |
| 90 | { |
| 91 | /* |
| 92 | * Both R1_SPI_IDLE and MMC_CARD_BUSY indicate |
| 93 | * an initialized card under SPI, but some cards |
| 94 | * (Marvell's) only behave when looking at this |
| 95 | * one. |
| 96 | */ |
| 97 | if (cmd.resp[1] & CARD_BUSY) |
| 98 | break; |
| 99 | } |
| 100 | else |
| 101 | { |
| 102 | if (cmd.resp[0] & CARD_BUSY) |
| 103 | break; |
| 104 | } |
| 105 | |
| 106 | err = -RT_ETIMEOUT; |
| 107 | |
| 108 | rt_thread_mdelay(10); |
| 109 | } |
| 110 | |
| 111 | if (cmd5_resp) |
| 112 | *cmd5_resp = cmd.resp[controller_is_spi(host) ? 1 : 0]; |
| 113 | |
| 114 | return err; |
| 115 | } |
| 116 | |
| 117 | rt_int32_t sdio_io_rw_direct(struct rt_mmcsd_card *card, |
| 118 | rt_int32_t rw, |
no test coverage detected