[Linux-stm32] [PATCH V2 1/3] mmc: Prepare all code for mmc_regulator_set_vqmmc() returning > 0
Marek Vasut
marex at denx.de
Thu Apr 16 16:36:47 UTC 2020
Patch all drivers which use mmc_regulator_set_vqmmc() and prepare them for
the fact that mmc_regulator_set_vqmmc() can return a value > 0, which would
happen if the signal voltage switch did NOT happen, because the voltage was
already set correctly.
Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Alexandre Torgue <alexandre.torgue at st.com>
Cc: Linus Walleij <linus.walleij at linaro.org>
Cc: Ludovic Barre <ludovic.barre at st.com>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam at linaro.org>
Cc: Maxime Coquelin <mcoquelin.stm32 at gmail.com>
Cc: Patrice Chotard <patrice.chotard at st.com>
Cc: Patrick Delaunay <patrick.delaunay at st.com>
Cc: Russell King <linux at armlinux.org.uk>
Cc: Ulf Hansson <ulf.hansson at linaro.org>
Cc: linux-stm32 at st-md-mailman.stormreply.com
To: linux-mmc at vger.kernel.org
---
V2: Patch only mmc_regulator_set_vqmmc()
---
drivers/mmc/host/dw_mmc-k3.c | 2 ++
drivers/mmc/host/dw_mmc.c | 2 ++
drivers/mmc/host/meson-gx-mmc.c | 7 ++++++-
drivers/mmc/host/mtk-sd.c | 2 ++
drivers/mmc/host/renesas_sdhi_core.c | 2 ++
drivers/mmc/host/sdhci-sprd.c | 2 ++
drivers/mmc/host/sdhci.c | 6 ++++++
drivers/mmc/host/sunxi-mmc.c | 10 ++++++++--
drivers/mmc/host/usdhi6rol0.c | 2 ++
9 files changed, 32 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc-k3.c b/drivers/mmc/host/dw_mmc-k3.c
index 23b6f65b3785..695e29452367 100644
--- a/drivers/mmc/host/dw_mmc-k3.c
+++ b/drivers/mmc/host/dw_mmc-k3.c
@@ -424,6 +424,8 @@ static int dw_mci_hi3660_switch_voltage(struct mmc_host *mmc,
if (!IS_ERR(mmc->supply.vqmmc)) {
ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret > 0)
+ ret = 0;
if (ret) {
dev_err(host->dev, "Regulator set error %d\n", ret);
return ret;
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index bc5278ab5707..3f82170f1d98 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1546,6 +1546,8 @@ static int dw_mci_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
if (!IS_ERR(mmc->supply.vqmmc)) {
ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret > 0)
+ ret = 0;
if (ret) {
dev_dbg(&mmc->class_dev,
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index 35400cf2a2e4..79e15fa6f4fd 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -1004,6 +1004,8 @@ static int meson_mmc_card_busy(struct mmc_host *mmc)
static int meson_mmc_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios)
{
+ int ret;
+
/* vqmmc regulator is available */
if (!IS_ERR(mmc->supply.vqmmc)) {
/*
@@ -1013,7 +1015,10 @@ static int meson_mmc_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios)
* to 1.8v. Please make sure the regulator framework is aware
* of your own regulator constraints
*/
- return mmc_regulator_set_vqmmc(mmc, ios);
+ ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret > 0)
+ ret = 0;
+ return ret;
}
/* no vqmmc regulator, assume fixed regulator at 3/3.3V */
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index b221c02cc71f..9688797f097d 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -1379,6 +1379,8 @@ static int msdc_ops_switch_volt(struct mmc_host *mmc, struct mmc_ios *ios)
}
ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret > 0)
+ ret = 0;
if (ret) {
dev_dbg(host->dev, "Regulator set error %d (%d)\n",
ret, ios->signal_voltage);
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index 68432bb0255b..7ffe17bb1e62 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -237,6 +237,8 @@ static int renesas_sdhi_start_signal_voltage_switch(struct mmc_host *mmc,
MMC_SIGNAL_VOLTAGE_330 ? 0 : -EINVAL;
ret = mmc_regulator_set_vqmmc(host->mmc, ios);
+ if (ret > 0)
+ ret = 0;
if (ret)
return ret;
diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index 60c3a4c620f9..2a27af3eceef 100644
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -434,6 +434,8 @@ static int sdhci_sprd_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios)
if (!IS_ERR(mmc->supply.vqmmc)) {
ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret > 0)
+ ret = 0;
if (ret) {
pr_err("%s: Switching signalling voltage failed\n",
mmc_hostname(mmc));
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 344a7e0e33fe..a100fb633b40 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -2411,6 +2411,8 @@ int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
if (!IS_ERR(mmc->supply.vqmmc)) {
ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret > 0)
+ ret = 0;
if (ret) {
pr_warn("%s: Switching to 3.3V signalling voltage failed\n",
mmc_hostname(mmc));
@@ -2434,6 +2436,8 @@ int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
return -EINVAL;
if (!IS_ERR(mmc->supply.vqmmc)) {
ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret > 0)
+ ret = 0;
if (ret) {
pr_warn("%s: Switching to 1.8V signalling voltage failed\n",
mmc_hostname(mmc));
@@ -2466,6 +2470,8 @@ int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
return -EINVAL;
if (!IS_ERR(mmc->supply.vqmmc)) {
ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret > 0)
+ ret = 0;
if (ret) {
pr_warn("%s: Switching to 1.2V signalling voltage failed\n",
mmc_hostname(mmc));
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index f87d7967457f..f70a4249b72b 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -951,9 +951,15 @@ static void sunxi_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
static int sunxi_mmc_volt_switch(struct mmc_host *mmc, struct mmc_ios *ios)
{
+ int ret;
+
/* vqmmc regulator is available */
- if (!IS_ERR(mmc->supply.vqmmc))
- return mmc_regulator_set_vqmmc(mmc, ios);
+ if (!IS_ERR(mmc->supply.vqmmc)) {
+ ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret > 0)
+ ret = 0;
+ return ret;
+ }
/* no vqmmc regulator, assume fixed regulator at 3/3.3V */
if (mmc->ios.signal_voltage == MMC_SIGNAL_VOLTAGE_330)
diff --git a/drivers/mmc/host/usdhi6rol0.c b/drivers/mmc/host/usdhi6rol0.c
index 9a0b1e4e405d..72e698071ddf 100644
--- a/drivers/mmc/host/usdhi6rol0.c
+++ b/drivers/mmc/host/usdhi6rol0.c
@@ -1174,6 +1174,8 @@ static int usdhi6_sig_volt_switch(struct mmc_host *mmc, struct mmc_ios *ios)
int ret;
ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret > 0)
+ ret = 0;
if (ret < 0)
return ret;
--
2.25.1
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