[PATCH v1 2/2] mmc: mediatek: add pre_enable() and post_disable() hook function
STALE2223d
LANDED
From: Chun-Hung Wu <hidden>
Date: 2020-08-27 09:33:35
Also in:
linux-arm-kernel, linux-arm-msm, linux-mediatek, linux-mmc, linux-tegra, lkml
Subsystem:
mediatek mmc/sd/sdio driver, multimedia card (mmc), secure digital (sd) and sdio subsystem, the rest · Maintainers:
Chaotian Jing, Ulf Hansson, Linus Torvalds
Landed in mainline as e282f2045a3d on 2020-09-07.
CQHCI_ENABLE bit in CQHCI_CFG should be disabled after msdc_cqe_disable(), and should be enabled before msdc_ceq_enable() for MTK platform. Add hook functions for cqhci_host_ops->pre_enable() and cqhci_host_ops->post_disable(). Signed-off-by: Chun-Hung Wu <redacted> --- drivers/mmc/host/mtk-sd.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+)
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 4e2583f..f53e11b 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c@@ -2282,6 +2282,26 @@ static void msdc_cqe_disable(struct mmc_host *mmc, bool recovery) } } +static void msdc_cqe_pre_enable(struct mmc_host *mmc) +{ + struct cqhci_host *cq_host = mmc->cqe_private; + u32 reg; + + reg = cqhci_readl(cq_host, CQHCI_CFG); + reg |= CQHCI_ENABLE; + cqhci_writel(cq_host, reg, CQHCI_CFG); +} + +static void msdc_cqe_post_disable(struct mmc_host *mmc) +{ + struct cqhci_host *cq_host = mmc->cqe_private; + u32 reg; + + reg = cqhci_readl(cq_host, CQHCI_CFG); + reg &= ~CQHCI_ENABLE; + cqhci_writel(cq_host, reg, CQHCI_CFG); +} + static const struct mmc_host_ops mt_msdc_ops = { .post_req = msdc_post_req, .pre_req = msdc_pre_req,
@@ -2301,6 +2321,8 @@ static void msdc_cqe_disable(struct mmc_host *mmc, bool recovery) static const struct cqhci_host_ops msdc_cmdq_ops = { .enable = msdc_cqe_enable, .disable = msdc_cqe_disable, + .pre_enable = msdc_cqe_pre_enable, + .post_disable = msdc_cqe_post_disable, }; static void msdc_of_property_parse(struct platform_device *pdev,
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1.7.9.5