Patch "mmc: sdhci-esdhc-imx: Do not break platform data boards" has been added to the 4.1-stable tree

This is a note to let you know that I've just added the patch titled

mmc: sdhci-esdhc-imx: Do not break platform data boards

to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
mmc-sdhci-esdhc-imx-do-not-break-platform-data-boards.patch
and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Fabio Estevam <[email protected]>
Date: Sat, 9 May 2015 09:57:09 -0300
Subject: mmc: sdhci-esdhc-imx: Do not break platform data boards

From: Fabio Estevam <[email protected]>

commit 7ccddeb08a632c713eca0a5f13bcbfa7e6e83982 upstream.

The only user of this driver that has not been converted to fully device tree is the i.MX35 SoC.

There is a i.MX35-based board (mach-pcm043.c) that uses platform data to pass wp_gpio and cd_gpio information.

Commit 8d86e4fcccf61ba ("mmc: sdhci-esdhc-imx: Call mmc_of_parse()") broke the platform data case by removing mmc_gpio_request_ro() and mmc_gpio_request_cd(), so restore the functionality for the non-dt case.

Also, restore the check for ESDHC_CD_CONTROLLER so that we can still support the "fsl,cd-controller" property.

---
 drivers/mmc/host/sdhci-esdhc-imx.c |   36 +++++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

@@ -925,6 +925,7 @@ static int sdhci_esdhc_imx_probe(struct
 	struct esdhc_platform_data *boarddata;
 	int err;
 	struct pltfm_imx_data *imx_data;
+	bool dt = true;
 
 	host = sdhci_pltfm_init(pdev, &sdhci_esdhc_imx_pdata, 0);
 	if (IS_ERR(host))

@@ -1012,11 +1013,44 @@ static int sdhci_esdhc_imx_probe(struct
 		}
 		imx_data->boarddata = *((struct esdhc_platform_data *)
 					host->mmc->parent->platform_data);
+		dt = false;
+	}
+	/* write_protect */
+	if (boarddata->wp_type == ESDHC_WP_GPIO && !dt) {
+		err = mmc_gpio_request_ro(host->mmc, boarddata->wp_gpio);
+		if (err) {
+			dev_err(mmc_dev(host->mmc),
+				"failed to request write-protect gpio!\n");
+			goto disable_clk;
+		}
+		host->mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
 	}
 
 	/* card_detect */
-	if (boarddata->cd_type == ESDHC_CD_CONTROLLER)
+	switch (boarddata->cd_type) {
+	case ESDHC_CD_GPIO:
+		if (dt)
+			break;
+		err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio, 0);
+		if (err) {
+			dev_err(mmc_dev(host->mmc),
+				"failed to request card-detect gpio!\n");
+			goto disable_clk;
+		}
+		/* fall through */
+
+	case ESDHC_CD_CONTROLLER:
+		/* we have a working card_detect back */
 		host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;
+		break;
+
+	case ESDHC_CD_PERMANENT:
+		host->mmc->caps |= MMC_CAP_NONREMOVABLE;
+		break;
+
+	case ESDHC_CD_NONE:
+		break;
+	}
 
 	switch (boarddata->max_bus_width) {
 	case 8:

Patches currently in stable-queue which might be from [email protected] are

queue-4.1/mmc-sdhci-esdhc-imx-do-not-break-platform-data-boards.patch queue-4.1/dts-imx51-fix-sd-card-gpio-polarity-specified-in-device-tree.patch queue-4.1/mmc-sdhci-esdhc-imx-move-mmc_of_parse-to-the-dt-probe.patch queue-4.1/dts-imx6-fix-sd-card-gpio-polarity-specified-in-device-tree.patch queue-4.1/dts-imx25-fix-sd-card-gpio-polarity-specified-in-device-tree.patch queue-4.1/dts-imx53-fix-sd-card-gpio-polarity-specified-in-device-tree.patch queue-4.1/mmc-sdhci-esdhc-imx-fix-cd-regression-for-dt-platform.patch