Re: [PATCH 2/2] mmc: sdhci-of-ma35d1: Add Novoton MA35D1 SDHCI driver

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Dear Philipp,

Thanks for your review.

On 2024/6/21 下午 07:45, Philipp Zabel wrote:
On Mi, 2024-06-19 at 13:46 +0800, Shan-Chun Hung wrote:
This adds the SDHCI driver for the MA35 series SoC. It is based upon the
SDHCI interface, but requires some extra initialization.

Signed-off-by: schung<schung@xxxxxxxxxxx>
---
  drivers/mmc/host/Kconfig           |  13 ++
  drivers/mmc/host/Makefile          |   1 +
  drivers/mmc/host/sdhci-of-ma35d1.c | 297 +++++++++++++++++++++++++++++
  3 files changed, 311 insertions(+)
  create mode 100644 drivers/mmc/host/sdhci-of-ma35d1.c

[...]
diff --git a/drivers/mmc/host/sdhci-of-ma35d1.c b/drivers/mmc/host/sdhci-of-ma35d1.c
new file mode 100644
index 000000000000..7714a5ab463d
--- /dev/null
+++ b/drivers/mmc/host/sdhci-of-ma35d1.c
@@ -0,0 +1,297 @@
[...]
+static int ma35_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct sdhci_pltfm_host *pltfm_host;
+	struct sdhci_host *host;
+	struct ma35_priv *priv;
+	int err;
+	u32 extra, ctl;
+
+	host = sdhci_pltfm_init(pdev, &sdhci_ma35_pdata,
+				sizeof(struct ma35_priv));
+	if (IS_ERR(host))
+		return PTR_ERR(host);
+
+	/*
+	 * extra adma table cnt for cross 128M boundary handling.
+	 */
+	extra = DIV_ROUND_UP_ULL(dma_get_required_mask(&pdev->dev), SZ_128M);
+	if (extra > SDHCI_MAX_SEGS)
+		extra = SDHCI_MAX_SEGS;
+	host->adma_table_cnt += extra;
+	pltfm_host = sdhci_priv(host);
+	priv = sdhci_pltfm_priv(pltfm_host);
+
+	if (dev->of_node) {
+		pltfm_host->clk = devm_clk_get(&pdev->dev, NULL);
+		if (IS_ERR(pltfm_host->clk)) {
+			err = PTR_ERR(pltfm_host->clk);
+			dev_err(&pdev->dev, "failed to get clk: %d\n", err);
+			goto free_pltfm;
+		}
+		err = clk_prepare_enable(pltfm_host->clk);
+		if (err)
+			goto free_pltfm;
+	}
+
+	err = mmc_of_parse(host->mmc);
+	if (err)
+		goto err_clk;
+
+	priv->rst = devm_reset_control_get(&pdev->dev, NULL);
Please use devm_reset_control_get_exclusive() instead.

regards
Philipp
OK, I will fix it.

Best Regards

Shan-Chun





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