53 lines
1.6 KiB
Diff
53 lines
1.6 KiB
Diff
|
From 462d8079ea97c8b4f005dd909a4592a06d2cf57a Mon Sep 17 00:00:00 2001
|
||
|
|
From: Peter Geis <pgwipeout@gmail.com>
|
||
|
|
Date: Sat, 22 Jan 2022 20:35:39 +0000
|
||
|
|
Subject: [PATCH 307/464] mmc: dw-mmc-rockchip: fix sdmmc after soft reboot
|
||
|
|
|
||
|
|
During shutdown the dw-mmc driver shuts down the vqmmc regulator.
|
||
|
|
This leads to situations where the sdmmc is unavailable after a soft
|
||
|
|
reboot.
|
||
|
|
Fix this by ensuring the vqmmc regulator is powered up on kernel
|
||
|
|
shutdown.
|
||
|
|
|
||
|
|
Signed-off-by: Peter Geis <pgwipeout@gmail.com>
|
||
|
|
---
|
||
|
|
drivers/mmc/host/dw_mmc-rockchip.c | 12 ++++++++++++
|
||
|
|
1 file changed, 12 insertions(+)
|
||
|
|
|
||
|
|
diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c
|
||
|
|
index 2a99f15f527f..60c48885f672 100644
|
||
|
|
--- a/drivers/mmc/host/dw_mmc-rockchip.c
|
||
|
|
+++ b/drivers/mmc/host/dw_mmc-rockchip.c
|
||
|
|
@@ -10,6 +10,7 @@
|
||
|
|
#include <linux/of_address.h>
|
||
|
|
#include <linux/mmc/slot-gpio.h>
|
||
|
|
#include <linux/pm_runtime.h>
|
||
|
|
+#include <linux/regulator/consumer.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
|
||
|
|
#include "dw_mmc.h"
|
||
|
|
@@ -390,9 +391,20 @@ static const struct dev_pm_ops dw_mci_rockchip_dev_pm_ops = {
|
||
|
|
NULL)
|
||
|
|
};
|
||
|
|
|
||
|
|
+static void dw_mci_rockchip_shutdown(struct platform_device *pdev)
|
||
|
|
+{
|
||
|
|
+ struct dw_mci *host = dev_get_drvdata(&pdev->dev);
|
||
|
|
+ struct mmc_host *mmc = host->slot->mmc;
|
||
|
|
+
|
||
|
|
+ if (!IS_ERR(mmc->supply.vqmmc) && !(host->vqmmc_enabled))
|
||
|
|
+ if(!regulator_enable(mmc->supply.vqmmc))
|
||
|
|
+ host->vqmmc_enabled = true;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
static struct platform_driver dw_mci_rockchip_pltfm_driver = {
|
||
|
|
.probe = dw_mci_rockchip_probe,
|
||
|
|
.remove = dw_mci_rockchip_remove,
|
||
|
|
+ .shutdown = dw_mci_rockchip_shutdown,
|
||
|
|
.driver = {
|
||
|
|
.name = "dwmmc_rockchip",
|
||
|
|
.probe_type = PROBE_PREFER_ASYNCHRONOUS,
|
||
|
|
--
|
||
|
|
2.34.1
|
||
|
|
|