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mmc: mediatek: add pre_enable() and post_disable() hook function

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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 <chun-hung.wu@mediatek.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/1598520783-25250-3-git-send-email-chun-hung.wu@mediatek.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Chun-Hung Wu 2020-08-27 17:33:03 +08:00 committed by Ulf Hansson
parent 887ba410ed
commit e282f2045a
1 changed files with 22 additions and 0 deletions
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22
drivers/mmc/host/mtk-sd.c
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@ -2290,6 +2290,26 @@ 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 = { static const struct mmc_host_ops mt_msdc_ops = {
.post_req = msdc_post_req, .post_req = msdc_post_req,
.pre_req = msdc_pre_req, .pre_req = msdc_pre_req,
@ -2309,6 +2329,8 @@ static const struct mmc_host_ops mt_msdc_ops = {
static const struct cqhci_host_ops msdc_cmdq_ops = { static const struct cqhci_host_ops msdc_cmdq_ops = {
.enable = msdc_cqe_enable, .enable = msdc_cqe_enable,
.disable = msdc_cqe_disable, .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, static void msdc_of_property_parse(struct platform_device *pdev,