[PATCH 07/12] mmc: mediatek: add busy_check support

Chaotian Jing
2017-09-12T09:07:47Z

bit7 of PATCH_BIT1 has different meaning in new design, to
compatible with previous platform, clear this bit in new
platform.

Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
---
drivers/mmc/host/mtk-sd.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index e7462fe..555824d 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -315,6 +315,7 @@ struct mtk_mmc_compatible {
bool pad_tune0;
bool async_fifo;
bool data_tune;
+ bool busy_check;
};

struct msdc_tune_para {
@@ -379,6 +380,7 @@ struct msdc_host {
.pad_tune0 = false,
.async_fifo = false,
.data_tune = false,
+ .busy_check = false,
};

static const struct mtk_mmc_compatible mt8173_compat = {
@@ -386,6 +388,7 @@ struct msdc_host {
.pad_tune0 = false,
.async_fifo = false,
.data_tune = false,
+ .busy_check = false,
};

static const struct mtk_mmc_compatible mt2701_compat = {
@@ -393,6 +396,7 @@ struct msdc_host {
.pad_tune0 = true,
.async_fifo = true,
.data_tune = true,
+ .busy_check = false,
};

static const struct mtk_mmc_compatible mt2712_compat = {
@@ -400,6 +404,7 @@ struct msdc_host {
.pad_tune0 = true,
.async_fifo = true,
.data_tune = true,
+ .busy_check = true,
};

static const struct of_device_id msdc_of_ids[] = {
@@ -1276,6 +1281,8 @@ static void msdc_init_hw(struct msdc_host *host)
sdr_set_field(host->base + MSDC_PATCH_BIT, MSDC_CKGEN_MSDC_DLY_SEL, 1);
writel(0xffff4089, host->base + MSDC_PATCH_BIT1);
sdr_set_bits(host->base + EMMC50_CFG0, EMMC50_CFG_CFCSTS_SEL);
+ if (host->dev_comp->busy_check)
+ sdr_clr_bits(host->base + MSDC_PATCH_BIT1, (1 << 7));
if (host->dev_comp->async_fifo) {
sdr_set_field(host->base + MSDC_PATCH_BIT2,
MSDC_PB2_RESPWAIT, 3);
--
1.8.1.1.dirty