[PATCH v5 07/12] mmc: mediatek: add busy_check support

Chaotian Jing
2017-10-11T02:41:31Z

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 8113bac..eceaee8 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -316,6 +316,7 @@ struct mtk_mmc_compatible {
u32 pad_tune_reg;
bool async_fifo;
bool data_tune;
+ bool busy_check;
};

struct msdc_tune_para {
@@ -380,6 +381,7 @@ struct msdc_host {
.pad_tune_reg = MSDC_PAD_TUNE,
.async_fifo = false,
.data_tune = false,
+ .busy_check = false,
};

static const struct mtk_mmc_compatible mt8173_compat = {
@@ -388,6 +390,7 @@ struct msdc_host {
.pad_tune_reg = MSDC_PAD_TUNE,
.async_fifo = false,
.data_tune = false,
+ .busy_check = false,
};

static const struct mtk_mmc_compatible mt2701_compat = {
@@ -396,6 +399,7 @@ struct msdc_host {
.pad_tune_reg = MSDC_PAD_TUNE0,
.async_fifo = true,
.data_tune = true,
+ .busy_check = false,
};

static const struct mtk_mmc_compatible mt2712_compat = {
@@ -404,6 +408,7 @@ struct msdc_host {
.pad_tune_reg = MSDC_PAD_TUNE0,
.async_fifo = true,
.data_tune = true,
+ .busy_check = true,
};

static const struct of_device_id msdc_of_ids[] = {
@@ -1275,6 +1280,8 @@ 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