* [PATCH 1/2] mmc: core: Add helper for mapping IOS voltage to string
@ 2016-07-12 14:08 Krzysztof Kozlowski
2016-07-12 14:08 ` [PATCH 2/2] mmc: dw_mmc: Print proper voltage on error Krzysztof Kozlowski
0 siblings, 1 reply; 6+ messages in thread
From: Krzysztof Kozlowski @ 2016-07-12 14:08 UTC (permalink / raw)
To: Ulf Hansson, Jaehoon Chung, linux-mmc, linux-kernel
Cc: Krzysztof Kozlowski, Bartlomiej Zolnierkiewicz
Add a helper for producing a user-friendly string with chosen signaling
voltage.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
drivers/mmc/core/debugfs.c | 15 +--------------
drivers/mmc/core/host.c | 13 +++++++++++++
include/linux/mmc/host.h | 2 ++
3 files changed, 16 insertions(+), 14 deletions(-)
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c
index c8451ce557ae..1b669cafea12 100644
--- a/drivers/mmc/core/debugfs.c
+++ b/drivers/mmc/core/debugfs.c
@@ -157,20 +157,7 @@ static int mmc_ios_show(struct seq_file *s, void *data)
}
seq_printf(s, "timing spec:\t%u (%s)\n", ios->timing, str);
- switch (ios->signal_voltage) {
- case MMC_SIGNAL_VOLTAGE_330:
- str = "3.30 V";
- break;
- case MMC_SIGNAL_VOLTAGE_180:
- str = "1.80 V";
- break;
- case MMC_SIGNAL_VOLTAGE_120:
- str = "1.20 V";
- break;
- default:
- str = "invalid";
- break;
- }
+ str = mmc_voltage_to_str(ios);
seq_printf(s, "signal voltage:\t%u (%s)\n", ios->signal_voltage, str);
switch (ios->drv_type) {
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index d7e86f9b3dab..6708bea84a0d 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -469,3 +469,16 @@ void mmc_free_host(struct mmc_host *host)
}
EXPORT_SYMBOL(mmc_free_host);
+
+const char *mmc_voltage_to_str(struct mmc_ios *ios)
+{
+ static const char * const voltages[] = {
+ [MMC_SIGNAL_VOLTAGE_330] = "3.30 V",
+ [MMC_SIGNAL_VOLTAGE_180] = "1.80 V",
+ [MMC_SIGNAL_VOLTAGE_120] = "1.20 V",
+ };
+
+ if (ios->signal_voltage <= MMC_SIGNAL_VOLTAGE_120)
+ return voltages[ios->signal_voltage];
+ return "invalid";
+}
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index aa4bfbf129e4..e1e87d3432d8 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -544,4 +544,6 @@ static inline void mmc_retune_recheck(struct mmc_host *host)
void mmc_retune_pause(struct mmc_host *host);
void mmc_retune_unpause(struct mmc_host *host);
+const char *mmc_voltage_to_str(struct mmc_ios *ios);
+
#endif /* LINUX_MMC_HOST_H */
--
1.9.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 2/2] mmc: dw_mmc: Print proper voltage on error
2016-07-12 14:08 [PATCH 1/2] mmc: core: Add helper for mapping IOS voltage to string Krzysztof Kozlowski
@ 2016-07-12 14:08 ` Krzysztof Kozlowski
2016-07-12 20:23 ` kbuild test robot
2016-07-13 1:35 ` Jaehoon Chung
0 siblings, 2 replies; 6+ messages in thread
From: Krzysztof Kozlowski @ 2016-07-12 14:08 UTC (permalink / raw)
To: Ulf Hansson, Jaehoon Chung, linux-mmc, linux-kernel
Cc: Krzysztof Kozlowski, Bartlomiej Zolnierkiewicz
The commit 97f659a2e972 ("mmc: dw_mmc: prevent to set the wrong
value") reordered the code so the 'uhs' variable used in
mmc_regulator_set_vqmmc() error message is always 0 at that time thus
always printing 3.3 voltage. Instead use value obtained from ios in
printed error message.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---
drivers/mmc/host/dw_mmc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index c2a128628b31..7de561065003 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1416,8 +1416,8 @@ static int dw_mci_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
ret = mmc_regulator_set_vqmmc(mmc, ios);
if (ret) {
dev_err(&mmc->class_dev,
- "Regulator set error %d - %s V\n",
- ret, uhs & v18 ? "1.8" : "3.3");
+ "Regulator set error %d - %s\n",
+ ret, mmc_voltage_to_str(ios));
return ret;
}
--
1.9.1
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 2/2] mmc: dw_mmc: Print proper voltage on error
2016-07-12 14:08 ` [PATCH 2/2] mmc: dw_mmc: Print proper voltage on error Krzysztof Kozlowski
@ 2016-07-12 20:23 ` kbuild test robot
2016-07-13 1:35 ` Jaehoon Chung
1 sibling, 0 replies; 6+ messages in thread
From: kbuild test robot @ 2016-07-12 20:23 UTC (permalink / raw)
To: Krzysztof Kozlowski
Cc: kbuild-all, Ulf Hansson, Jaehoon Chung, linux-mmc, linux-kernel,
Krzysztof Kozlowski, Bartlomiej Zolnierkiewicz
[-- Attachment #1: Type: text/plain, Size: 819 bytes --]
Hi,
[auto build test ERROR on next-20160712]
[cannot apply to ulf.hansson-mmc/next v4.7-rc7 v4.7-rc6 v4.7-rc5 v4.7-rc7]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Krzysztof-Kozlowski/mmc-core-Add-helper-for-mapping-IOS-voltage-to-string/20160712-221741
config: i386-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
>> ERROR: "mmc_voltage_to_str" [drivers/mmc/host/dw_mmc.ko] undefined!
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
[-- Type: application/octet-stream, Size: 55730 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 2/2] mmc: dw_mmc: Print proper voltage on error
@ 2016-07-12 20:23 ` kbuild test robot
0 siblings, 0 replies; 6+ messages in thread
From: kbuild test robot @ 2016-07-12 20:23 UTC (permalink / raw)
Cc: kbuild-all, Ulf Hansson, Jaehoon Chung, linux-mmc, linux-kernel,
Krzysztof Kozlowski, Bartlomiej Zolnierkiewicz
[-- Attachment #1: Type: text/plain, Size: 819 bytes --]
Hi,
[auto build test ERROR on next-20160712]
[cannot apply to ulf.hansson-mmc/next v4.7-rc7 v4.7-rc6 v4.7-rc5 v4.7-rc7]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Krzysztof-Kozlowski/mmc-core-Add-helper-for-mapping-IOS-voltage-to-string/20160712-221741
config: i386-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
>> ERROR: "mmc_voltage_to_str" [drivers/mmc/host/dw_mmc.ko] undefined!
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
[-- Type: application/octet-stream, Size: 55730 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 2/2] mmc: dw_mmc: Print proper voltage on error
2016-07-12 14:08 ` [PATCH 2/2] mmc: dw_mmc: Print proper voltage on error Krzysztof Kozlowski
2016-07-12 20:23 ` kbuild test robot
@ 2016-07-13 1:35 ` Jaehoon Chung
2016-07-13 7:55 ` Krzysztof Kozlowski
1 sibling, 1 reply; 6+ messages in thread
From: Jaehoon Chung @ 2016-07-13 1:35 UTC (permalink / raw)
To: Krzysztof Kozlowski, Ulf Hansson, linux-mmc, linux-kernel
Cc: Bartlomiej Zolnierkiewicz
Hi Krzysztof,
On 07/12/2016 11:08 PM, Krzysztof Kozlowski wrote:
> The commit 97f659a2e972 ("mmc: dw_mmc: prevent to set the wrong
> value") reordered the code so the 'uhs' variable used in
> mmc_regulator_set_vqmmc() error message is always 0 at that time thus
> always printing 3.3 voltage. Instead use value obtained from ios in
> printed error message.
The commit 97f659a2e972 was dropped because some board didn't work fine.
Some boards didn't use the vqmmc suppy and not defined into device-tree.
It's short time to fix. I will re-send the patch on next.
At that time, i will check this patch.
Best Regards,
Jaehoon Chung
>
> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
> ---
> drivers/mmc/host/dw_mmc.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
> index c2a128628b31..7de561065003 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -1416,8 +1416,8 @@ static int dw_mci_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
> ret = mmc_regulator_set_vqmmc(mmc, ios);
> if (ret) {
> dev_err(&mmc->class_dev,
> - "Regulator set error %d - %s V\n",
> - ret, uhs & v18 ? "1.8" : "3.3");
> + "Regulator set error %d - %s\n",
> + ret, mmc_voltage_to_str(ios));
> return ret;
> }
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 2/2] mmc: dw_mmc: Print proper voltage on error
2016-07-13 1:35 ` Jaehoon Chung
@ 2016-07-13 7:55 ` Krzysztof Kozlowski
0 siblings, 0 replies; 6+ messages in thread
From: Krzysztof Kozlowski @ 2016-07-13 7:55 UTC (permalink / raw)
To: Jaehoon Chung, Ulf Hansson, linux-mmc, linux-kernel
Cc: Bartlomiej Zolnierkiewicz
On 07/13/2016 03:35 AM, Jaehoon Chung wrote:
> Hi Krzysztof,
>
> On 07/12/2016 11:08 PM, Krzysztof Kozlowski wrote:
>> The commit 97f659a2e972 ("mmc: dw_mmc: prevent to set the wrong
>> value") reordered the code so the 'uhs' variable used in
>> mmc_regulator_set_vqmmc() error message is always 0 at that time thus
>> always printing 3.3 voltage. Instead use value obtained from ios in
>> printed error message.
>
> The commit 97f659a2e972 was dropped because some board didn't work fine.
> Some boards didn't use the vqmmc suppy and not defined into device-tree.
>
> It's short time to fix. I will re-send the patch on next.
> At that time, i will check this patch.
Ah, okay. If 97f659a2e972 is dropped, there is no need for this patchset.
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2016-07-13 7:55 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-07-12 14:08 [PATCH 1/2] mmc: core: Add helper for mapping IOS voltage to string Krzysztof Kozlowski
2016-07-12 14:08 ` [PATCH 2/2] mmc: dw_mmc: Print proper voltage on error Krzysztof Kozlowski
2016-07-12 20:23 ` kbuild test robot
2016-07-12 20:23 ` kbuild test robot
2016-07-13 1:35 ` Jaehoon Chung
2016-07-13 7:55 ` Krzysztof Kozlowski
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