[Linux-stm32] [PATCH V2 1/3] mmc: Prepare all code for mmc_regulator_set_vqmmc() returning > 0
Ulf Hansson
ulf.hansson at linaro.org
Fri Apr 17 09:30:57 UTC 2020
On Thu, 16 Apr 2020 at 18:36, Marek Vasut <marex at denx.de> wrote:
>
> 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
Applied for next, thanks!
I took the liberty to re-work and simplify some of the code, please
have a look at my next branch to make sure I didn't screw something
up.
Kind regards
Uffe
diff --git a/drivers/mmc/host/dw_mmc-k3.c b/drivers/mmc/host/dw_mmc-k3.c
index 23b6f65b3785..50977ff18074 100644
--- a/drivers/mmc/host/dw_mmc-k3.c
+++ b/drivers/mmc/host/dw_mmc-k3.c
@@ -424,7 +424,7 @@ 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) {
+ if (ret < 0) {
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..5d1f8a3ec3a5 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1546,8 +1546,7 @@ 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) {
+ if (ret < 0) {
dev_dbg(&mmc->class_dev,
"Regulator set error %d - %s V\n",
ret, uhs & v18 ? "1.8" : "3.3");
> ---
> 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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