diff options
| author | Adrian Hunter <adrian.hunter@intel.com> | 2022-09-26 22:20:22 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2022-09-28 11:08:56 +0300 |
| commit | 1e63d2973ea39ffebd829de632b6b2336d59f41f (patch) | |
| tree | 58451501ac2ac3c2a96d62fac9f51143040b3dfb /drivers/mmc/host | |
| parent | 6fbde9e98a580feec73f3e1677c1f4b7a1ce8c64 (diff) | |
| download | linux-1e63d2973ea39ffebd829de632b6b2336d59f41f.tar.xz | |
mmc: sdhci: Centralize CMD and DATA reset handling
Centralize CMD and DATA reset handling so that is more obvious how reset
is handled in different situations.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20220926192022.85660-5-adrian.hunter@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 52 |
1 files changed, 39 insertions, 13 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index ff4342d04e73..fef03de85b99 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -259,6 +259,36 @@ static void sdhci_reset_for_all(struct sdhci_host *host) } } +enum sdhci_reset_reason { + SDHCI_RESET_FOR_INIT, + SDHCI_RESET_FOR_REQUEST_ERROR, + SDHCI_RESET_FOR_REQUEST_ERROR_DATA_ONLY, + SDHCI_RESET_FOR_TUNING_ABORT, + SDHCI_RESET_FOR_CARD_REMOVED, + SDHCI_RESET_FOR_CQE_RECOVERY, +}; + +static void sdhci_reset_for_reason(struct sdhci_host *host, enum sdhci_reset_reason reason) +{ + switch (reason) { + case SDHCI_RESET_FOR_INIT: + sdhci_do_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); + break; + case SDHCI_RESET_FOR_REQUEST_ERROR: + case SDHCI_RESET_FOR_TUNING_ABORT: + case SDHCI_RESET_FOR_CARD_REMOVED: + case SDHCI_RESET_FOR_CQE_RECOVERY: + sdhci_do_reset(host, SDHCI_RESET_CMD); + sdhci_do_reset(host, SDHCI_RESET_DATA); + break; + case SDHCI_RESET_FOR_REQUEST_ERROR_DATA_ONLY: + sdhci_do_reset(host, SDHCI_RESET_DATA); + break; + } +} + +#define sdhci_reset_for(h, r) sdhci_reset_for_reason((h), SDHCI_RESET_FOR_##r) + static void sdhci_set_default_irqs(struct sdhci_host *host) { host->ier = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | @@ -327,7 +357,7 @@ static void sdhci_init(struct sdhci_host *host, int soft) unsigned long flags; if (soft) - sdhci_do_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); + sdhci_reset_for(host, INIT); else sdhci_reset_for_all(host); @@ -1542,8 +1572,9 @@ static void __sdhci_finish_data(struct sdhci_host *host, bool sw_data_timeout) */ if (data->error) { if (!host->cmd || host->cmd == data_cmd) - sdhci_do_reset(host, SDHCI_RESET_CMD); - sdhci_do_reset(host, SDHCI_RESET_DATA); + sdhci_reset_for(host, REQUEST_ERROR); + else + sdhci_reset_for(host, REQUEST_ERROR_DATA_ONLY); } if ((host->flags & (SDHCI_REQ_USE_DMA | SDHCI_USE_ADMA)) == @@ -2714,8 +2745,7 @@ void sdhci_abort_tuning(struct sdhci_host *host, u32 opcode) { sdhci_reset_tuning(host); - sdhci_do_reset(host, SDHCI_RESET_CMD); - sdhci_do_reset(host, SDHCI_RESET_DATA); + sdhci_reset_for(host, TUNING_ABORT); sdhci_end_tuning(host); @@ -2983,8 +3013,7 @@ static void sdhci_card_event(struct mmc_host *mmc) pr_err("%s: Resetting controller.\n", mmc_hostname(mmc)); - sdhci_do_reset(host, SDHCI_RESET_CMD); - sdhci_do_reset(host, SDHCI_RESET_DATA); + sdhci_reset_for(host, CARD_REMOVED); sdhci_error_out_mrqs(host, -ENOMEDIUM); } @@ -3055,8 +3084,7 @@ static bool sdhci_request_done(struct sdhci_host *host) /* This is to force an update */ host->ops->set_clock(host, host->clock); - sdhci_do_reset(host, SDHCI_RESET_CMD); - sdhci_do_reset(host, SDHCI_RESET_DATA); + sdhci_reset_for(host, REQUEST_ERROR); host->pending_reset = false; } @@ -3897,10 +3925,8 @@ void sdhci_cqe_disable(struct mmc_host *mmc, bool recovery) host->cqe_on = false; - if (recovery) { - sdhci_do_reset(host, SDHCI_RESET_CMD); - sdhci_do_reset(host, SDHCI_RESET_DATA); - } + if (recovery) + sdhci_reset_for(host, CQE_RECOVERY); pr_debug("%s: sdhci: CQE off, IRQ mask %#x, IRQ status %#x\n", mmc_hostname(mmc), host->ier, |