linux-kernel - [PATCH] mmc: sdhci-of-arasan: Get quirks from device tree

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Date:	Mon, 27 Jul 2015 16:04:09 +0800
From:	Shawn Lin <shawn.lin@...k-chips.com>
To:	Ulf Hansson <ulf.hansson@...aro.org>
Cc:	Sören Brinkmann <soren.brinkmann@...inx.com>,
	Michal Simek <michal.simek@...inx.com>,
	linux-arm-kernel@...ts.infradead.org, linux-mmc@...r.kernel.org,
	linux-kernel@...r.kernel.org, Shawn Lin <shawn.lin@...k-chips.com>
Subject: [PATCH] mmc: sdhci-of-arasan: Get quirks from device tree

This patch adds the interface to get quirks from dts, and
there is no need to assign different quirks by condition statement
of arasan IP version.

Signed-off-by: Shawn Lin <shawn.lin@...k-chips.com>
---

 drivers/mmc/host/sdhci-of-arasan.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index ef5a7d2..db07788 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -132,6 +132,7 @@ static SIMPLE_DEV_PM_OPS(sdhci_arasan_dev_pm_ops, sdhci_arasan_suspend,
 static int sdhci_arasan_probe(struct platform_device *pdev)
 {
 	int ret;
+	u32 quirktab[2];
 	struct clk *clk_xin;
 	struct sdhci_host *host;
 	struct sdhci_pltfm_host *pltfm_host;
@@ -172,6 +173,12 @@ static int sdhci_arasan_probe(struct platform_device *pdev)
 		goto clk_disable_all;
 	}
 
+	if (of_property_read_u32_array(pdev->dev.of_node,
+				       "arasan,quirks", &quirktab[0], 2)) {
+		host->quirks |= quirktab[0];
+		host->quirks2 |= quirktab[1];
+	}
+
 	if (of_device_is_compatible(pdev->dev.of_node, "arasan,sdhci-4.9a")) {
 		host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT;
 		host->quirks2 |= SDHCI_QUIRK2_HOST_NO_CMD23;
-- 
2.3.7


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