linux-kernel - [PATCH 4.4 19/74] mmc: sdhci-of-esdhc: add/remove some quirks according to vendor version

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Date:   Mon, 29 Jan 2018 13:56:24 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Yangbo Lu <yangbo.lu@...escale.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Matthias Brugger <mbrugger@...e.com>
Subject: [PATCH 4.4 19/74] mmc: sdhci-of-esdhc: add/remove some quirks according to vendor version

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: yangbo lu <yangbo.lu@...escale.com>

commit 1ef5e49e46b919052474d9b54a15debc79ff0133 upstream.

A previous patch had removed esdhc_of_platform_init() by mistake.
static void esdhc_of_platform_init(struct sdhci_host *host)
{
	u32 vvn;

	vvn = in_be32(host->ioaddr + SDHCI_SLOT_INT_STATUS);
	vvn = (vvn & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
	if (vvn == VENDOR_V_22)
		host->quirks2 |= SDHCI_QUIRK2_HOST_NO_CMD23;

	if (vvn > VENDOR_V_22)
		host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
}

This patch is used to fix it by add/remove some quirks according to
verdor version in probe.

Signed-off-by: Yangbo Lu <yangbo.lu@...escale.com>
Fixes: f4932cfd22f1 ("mmc: sdhci-of-esdhc: support both BE and LE host controller")
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Matthias Brugger <mbrugger@...e.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mmc/host/sdhci-of-esdhc.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -584,6 +584,8 @@ static int sdhci_esdhc_probe(struct plat
 {
 	struct sdhci_host *host;
 	struct device_node *np;
+	struct sdhci_pltfm_host *pltfm_host;
+	struct sdhci_esdhc *esdhc;
 	int ret;
 
 	np = pdev->dev.of_node;
@@ -600,6 +602,14 @@ static int sdhci_esdhc_probe(struct plat
 
 	sdhci_get_of_property(pdev);
 
+	pltfm_host = sdhci_priv(host);
+	esdhc = pltfm_host->priv;
+	if (esdhc->vendor_ver == VENDOR_V_22)
+		host->quirks2 |= SDHCI_QUIRK2_HOST_NO_CMD23;
+
+	if (esdhc->vendor_ver > VENDOR_V_22)
+		host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
+
 	if (of_device_is_compatible(np, "fsl,p5040-esdhc") ||
 	    of_device_is_compatible(np, "fsl,p5020-esdhc") ||
 	    of_device_is_compatible(np, "fsl,p4080-esdhc") ||