diff options
| author | Amandeep Singh <amansing@codeaurora.org> | 2019-07-24 11:46:12 +0530 |
|---|---|---|
| committer | Amandeep Singh <amansing@codeaurora.org> | 2019-09-03 11:33:13 +0530 |
| commit | 2ca7eb28dcac93fcf0818232e10fe51f43acfac1 (patch) | |
| tree | e0ac01a2d34c7bc16c4825310ace3ac9b6b32333 | |
| parent | ae6070aa42bfab695c8e94c23944e6c28b6deb6f (diff) | |
mmc: sdhci-msm: Ping with known good phase
Ping with known good phase if last phase of tuning fails.
Change-Id: I3d8d8ce3d8a4dc00146668b815b69619d3a4cea8
Signed-off-by: Amandeep Singh <amansing@codeaurora.org>
| -rw-r--r-- | drivers/mmc/host/sdhci-msm.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c index a7bd93f4eedb..a7afa467d32f 100644 --- a/drivers/mmc/host/sdhci-msm.c +++ b/drivers/mmc/host/sdhci-msm.c @@ -2,7 +2,7 @@ * drivers/mmc/host/sdhci-msm.c - Qualcomm Technologies, Inc. MSM SDHCI Platform * driver source file * - * Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. + * Copyright (c) 2012-2019, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -1288,6 +1288,34 @@ retry: } else { pr_debug("%s: %s: found ## bad ## phase = %d\n", mmc_hostname(mmc), __func__, phase); + + if (phase == 15 && tuned_phase_cnt) { + pr_err("%s: %s: Ping with known good phase\n", + mmc_hostname(mmc), __func__); + /* set the phase in delay line hw block */ + rc = msm_config_cm_dll_phase(host, + tuned_phases[tuned_phase_cnt - 1]); + if (rc) + goto kfree; + + cmd.opcode = opcode; + cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; + + data.blksz = size; + data.blocks = 1; + data.flags = MMC_DATA_READ; + data.timeout_ns = 1000 * 1000 * 1000; + + data.sg = &sg; + data.sg_len = 1; + sg_init_one(&sg, data_buf, size); + memset(data_buf, 0, size); + mmc_wait_for_req(mmc, &mrq); + + if ((cmd.error || data.error)) + pr_err("%s: %s: Ping with known good phase failed\n", + mmc_hostname(mmc), __func__); + } } } while (++phase < 16); |