From: Ben Chuang <benchuanggli@gmail.com>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
ben.chuang@genesyslogic.com.tw, greg.tu@genesyslogic.com.tw,
Ben Chuang <benchuanggli@gmail.com>
Subject: [RFC,PATCH 5/6] mmc: sdhci-uhs2: Introduce a uhs2_pre_detec_init function
Date: Mon, 30 Dec 2019 19:39:59 +0800 [thread overview]
Message-ID: <20191230113959.38150-1-benchuanggli@gmail.com> (raw)
From: Ben Chuang <ben.chuang@genesyslogic.com.tw>
Introduce a uhs2_pre_detect_init function before detect uhs2 interface.
Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
---
drivers/mmc/host/sdhci-uhs2.c | 3 +++
drivers/mmc/host/sdhci.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c
index 49bda02dd305..d0cccc358cf2 100644
--- a/drivers/mmc/host/sdhci-uhs2.c
+++ b/drivers/mmc/host/sdhci-uhs2.c
@@ -506,6 +506,9 @@ int sdhci_uhs2_do_detect_init(struct sdhci_host *host)
DBG("%s: begin UHS2 init.\n", __func__);
spin_lock_irqsave(&host->lock, flags);
+ if (host->ops && host->ops->uhs2_pre_detect_init)
+ host->ops->uhs2_pre_detect_init(host);
+
if (sdhci_uhs2_interface_detect(host)) {
pr_warn("%s: cannot detect UHS2 interface.\n",
mmc_hostname(host->mmc));
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index ea5e2119e1c9..3b5b9c8e6663 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -904,6 +904,7 @@ struct sdhci_ops {
void (*voltage_switch)(struct sdhci_host *host);
void (*adma_write_desc)(struct sdhci_host *host, void **desc,
dma_addr_t addr, int len, unsigned int cmd);
+ void (*uhs2_pre_detect_init)(struct sdhci_host *host);
void (*uhs2_post_attach_sd)(struct sdhci_host *host);
};
--
2.24.1
reply other threads:[~2019-12-30 11:39 UTC|newest]
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