diff options
author | Ludovic Barre <ludovic.barre@st.com> | 2018-10-08 14:08:36 +0200 |
---|---|---|
committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-10-09 09:13:03 +0200 |
commit | 4798351018a72deffc98cc70624dd812eff01455 (patch) | |
tree | 1f0ab5be864ba0197c9d607c6c5d98d813b2145e /drivers/mmc | |
parent | ad7b8918dbb2ded346e7f4372e476ab79eefadca (diff) | |
download | linux-stable-4798351018a72deffc98cc70624dd812eff01455.tar.gz linux-stable-4798351018a72deffc98cc70624dd812eff01455.tar.bz2 linux-stable-4798351018a72deffc98cc70624dd812eff01455.zip |
mmc: mmci: add prepare/unprepare_data callbacks
This patch adds prepare/unprepare callbacks to mmci_host_ops.
Like this mmci_pre/post_request can be generic, mmci_prepare_data
and mmci_unprepare_data provide common next_cookie management.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r-- | drivers/mmc/host/mmci.c | 101 | ||||
-rw-r--r-- | drivers/mmc/host/mmci.h | 8 | ||||
-rw-r--r-- | drivers/mmc/host/mmci_qcom_dml.c | 2 |
3 files changed, 78 insertions, 33 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index f862a1bba358..4db2b3fd173f 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -392,6 +392,31 @@ void mmci_dma_setup(struct mmci_host *host) host->use_dma = true; } +int mmci_prep_data(struct mmci_host *host, struct mmc_data *data, bool next) +{ + int err; + + if (!host->ops || !host->ops->prep_data) + return 0; + + err = host->ops->prep_data(host, data, next); + + if (next && !err) + data->host_cookie = ++host->next_cookie < 0 ? + 1 : host->next_cookie; + + return err; +} + +void mmci_unprep_data(struct mmci_host *host, struct mmc_data *data, + int err) +{ + if (host->ops && host->ops->unprep_data) + host->ops->unprep_data(host, data, err); + + data->host_cookie = 0; +} + static void mmci_request_end(struct mmci_host *host, struct mmc_request *mrq) { @@ -619,7 +644,7 @@ static void mmci_dma_finalize(struct mmci_host *host, struct mmc_data *data) } /* prepares DMA channel and DMA descriptor, returns non-zero on failure */ -static int __mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, +static int _mmci_dmae_prep_data(struct mmci_host *host, struct mmc_data *data, struct dma_chan **dma_chan, struct dma_async_tx_descriptor **dma_desc) { @@ -682,21 +707,24 @@ static int __mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, return -ENOMEM; } -static inline int mmci_dma_prep_data(struct mmci_host *host, - struct mmc_data *data, - bool next) +int mmci_dmae_prep_data(struct mmci_host *host, + struct mmc_data *data, + bool next) { struct mmci_dmae_priv *dmae = host->dma_priv; struct mmci_dmae_next *nd = &dmae->next_data; + if (!host->use_dma) + return -EINVAL; + if (next) - return __mmci_dma_prep_data(host, data, &nd->chan, &nd->desc); + return _mmci_dmae_prep_data(host, data, &nd->chan, &nd->desc); /* Check if next job is already prepared. */ if (dmae->cur && dmae->desc_current) return 0; /* No job were prepared thus do it now. */ - return __mmci_dma_prep_data(host, data, &dmae->cur, + return _mmci_dmae_prep_data(host, data, &dmae->cur, &dmae->desc_current); } @@ -709,7 +737,7 @@ static int mmci_dma_start_data(struct mmci_host *host, unsigned int datactrl) if (!host->use_dma) return -EINVAL; - ret = mmci_dma_prep_data(host, host->data, false); + ret = mmci_dmae_prep_data(host, host->data, false); if (ret) return ret; @@ -756,32 +784,13 @@ static void mmci_get_next_data(struct mmci_host *host, struct mmc_data *data) next->chan = NULL; } -static void mmci_pre_request(struct mmc_host *mmc, struct mmc_request *mrq) -{ - struct mmci_host *host = mmc_priv(mmc); - struct mmc_data *data = mrq->data; - - if (!host->use_dma || !data) - return; - - BUG_ON(data->host_cookie); - - if (mmci_validate_data(host, data)) - return; - - if (!mmci_dma_prep_data(host, data, true)) - data->host_cookie = ++host->next_cookie < 0 ? - 1 : host->next_cookie; -} +void mmci_dmae_unprep_data(struct mmci_host *host, + struct mmc_data *data, int err) -static void mmci_post_request(struct mmc_host *mmc, struct mmc_request *mrq, - int err) { - struct mmci_host *host = mmc_priv(mmc); struct mmci_dmae_priv *dmae = host->dma_priv; - struct mmc_data *data = mrq->data; - if (!host->use_dma || !data || !data->host_cookie) + if (!host->use_dma) return; mmci_dma_unmap(host, data); @@ -805,11 +814,12 @@ static void mmci_post_request(struct mmc_host *mmc, struct mmc_request *mrq, next->desc = NULL; next->chan = NULL; - data->host_cookie = 0; } } static struct mmci_host_ops mmci_variant_ops = { + .prep_data = mmci_dmae_prep_data, + .unprep_data = mmci_dmae_unprep_data, .dma_setup = mmci_dmae_setup, .dma_release = mmci_dmae_release, }; @@ -838,11 +848,36 @@ static inline int mmci_dma_start_data(struct mmci_host *host, unsigned int datac return -ENOSYS; } -#define mmci_pre_request NULL -#define mmci_post_request NULL - #endif +static void mmci_pre_request(struct mmc_host *mmc, struct mmc_request *mrq) +{ + struct mmci_host *host = mmc_priv(mmc); + struct mmc_data *data = mrq->data; + + if (!data) + return; + + WARN_ON(data->host_cookie); + + if (mmci_validate_data(host, data)) + return; + + mmci_prep_data(host, data, true); +} + +static void mmci_post_request(struct mmc_host *mmc, struct mmc_request *mrq, + int err) +{ + struct mmci_host *host = mmc_priv(mmc); + struct mmc_data *data = mrq->data; + + if (!data || !data->host_cookie) + return; + + mmci_unprep_data(host, data, err); +} + static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) { struct variant_data *variant = host->variant; diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index 1d5ba4e53341..decb1c72d787 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -273,6 +273,10 @@ struct variant_data { /* mmci variant callbacks */ struct mmci_host_ops { + int (*prep_data)(struct mmci_host *host, struct mmc_data *data, + bool next); + void (*unprep_data)(struct mmci_host *host, struct mmc_data *data, + int err); int (*dma_setup)(struct mmci_host *host); void (*dma_release)(struct mmci_host *host); }; @@ -327,6 +331,10 @@ struct mmci_host { #define dma_inprogress(host) ((host)->dma_in_progress) +int mmci_dmae_prep_data(struct mmci_host *host, struct mmc_data *data, + bool next); +void mmci_dmae_unprep_data(struct mmci_host *host, struct mmc_data *data, + int err); int mmci_dmae_setup(struct mmci_host *host); void mmci_dmae_release(struct mmci_host *host); diff --git a/drivers/mmc/host/mmci_qcom_dml.c b/drivers/mmc/host/mmci_qcom_dml.c index 92b03a3343e5..156e30b54e3f 100644 --- a/drivers/mmc/host/mmci_qcom_dml.c +++ b/drivers/mmc/host/mmci_qcom_dml.c @@ -184,6 +184,8 @@ static int qcom_dma_setup(struct mmci_host *host) } static struct mmci_host_ops qcom_variant_ops = { + .prep_data = mmci_dmae_prep_data, + .unprep_data = mmci_dmae_unprep_data, .dma_setup = qcom_dma_setup, .dma_release = mmci_dmae_release, }; |