[PATCH V2 2/6] mmc: mmci: add helper functions to define datactrl value for variants

Ludovic Barre
2019-03-07T16:38:58Z

This patch adds default helper functions to define datactrl value.
Each variant could use these helpers to define datactrl and adds
their specific field.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
---
drivers/mmc/host/mmci.c | 25 +++++++++++++++++++++++++
drivers/mmc/host/mmci.h | 5 +++++
2 files changed, 30 insertions(+)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 9e6a2c1..28b76c5 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -983,6 +983,31 @@ static void mmci_post_request(struct mmc_host *mmc, struct mmc_request *mrq,
mmci_unprep_data(host, data, err);
}

+u32 mmci_dctrl_blksz(struct mmci_host *host)
+{
+ return (ffs(host->data->blksz) - 1) << 4;
+}
+
+u32 mmci_dctrl_dir(struct mmci_host *host)
+{
+ return host->data->flags & MMC_DATA_READ ? MCI_DPSM_DIRECTION : 0;
+}
+
+u32 mmci_dctrl_ddr(struct mmci_host *host)
+{
+ if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50 ||
+ host->mmc->ios.timing == MMC_TIMING_MMC_DDR52)
+ return host->variant->datactrl_mask_ddrmode;
+ return 0;
+}
+
+u32 mmci_dctrl_sdio(struct mmci_host *host)
+{
+ if (host->mmc->card && mmc_card_sdio(host->mmc->card))
+ return host->variant->datactrl_mask_sdio;
+ return 0;
+}
+
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 a59049b..32ae41d 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -430,6 +430,11 @@ struct mmci_host {
void mmci_write_clkreg(struct mmci_host *host, u32 clk);
void mmci_write_pwrreg(struct mmci_host *host, u32 pwr);

+u32 mmci_dctrl_blksz(struct mmci_host *host);
+u32 mmci_dctrl_dir(struct mmci_host *host);
+u32 mmci_dctrl_ddr(struct mmci_host *host);
+u32 mmci_dctrl_sdio(struct mmci_host *host);
+
#ifdef CONFIG_DMA_ENGINE
int mmci_dmae_prep_data(struct mmci_host *host, struct mmc_data *data,
bool next);
--
2.7.4