From: Kai-Heng Feng <kai.heng.feng@canonical.com>
To: arnd@arndb.de, gregkh@linuxfoundation.org, ulf.hansson@linaro.org
Cc: linux-pm@vger.kernel.org,
Kai-Heng Feng <kai.heng.feng@canonical.com>,
Ricky WU <ricky_wu@realtek.com>,
Thomas Hebb <tommyhebb@gmail.com>,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/4] mmc: rtsx: Use pm_runtime_{get,put}() to handle runtime PM
Date: Thu, 20 Jan 2022 22:50:02 +0800 [thread overview]
Message-ID: <20220120145006.1682014-1-kai.heng.feng@canonical.com> (raw)
Commit 5b4258f6721f ("misc: rtsx: rts5249 support runtime PM") doesn't
use pm_runtime_{get,put}() helpers when it should, so the RPM refcount
keeps at zero, hence its parent driver, rtsx_pci, has to do lots of
weird tricks to keep it from runtime suspending.
So use those helpers at right places to properly manage runtime PM.
Fixes: 5b4258f6721f ("misc: rtsx: rts5249 support runtime PM")
Cc: Ricky WU <ricky_wu@realtek.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
---
drivers/mmc/host/rtsx_pci_sdmmc.c | 44 +++++++++++++++++++++++--------
1 file changed, 33 insertions(+), 11 deletions(-)
diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c b/drivers/mmc/host/rtsx_pci_sdmmc.c
index 58cfaffa3c2d8..2656dc840a3a5 100644
--- a/drivers/mmc/host/rtsx_pci_sdmmc.c
+++ b/drivers/mmc/host/rtsx_pci_sdmmc.c
@@ -806,6 +806,7 @@ static void sd_request(struct work_struct *work)
struct mmc_request *mrq = host->mrq;
struct mmc_command *cmd = mrq->cmd;
struct mmc_data *data = mrq->data;
+ struct device *dev = &host->pdev->dev;
unsigned int data_size = 0;
int err;
@@ -822,6 +823,7 @@ static void sd_request(struct work_struct *work)
}
mutex_lock(&pcr->pcr_mutex);
+ pm_runtime_get_sync(dev);
rtsx_pci_start_run(pcr);
@@ -858,6 +860,8 @@ static void sd_request(struct work_struct *work)
data->bytes_xfered = data->blocks * data->blksz;
}
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
mutex_unlock(&pcr->pcr_mutex);
finish:
@@ -1080,6 +1084,7 @@ static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
struct rtsx_pcr *pcr = host->pcr;
+ struct device *dev = &host->pdev->dev;
if (host->eject)
return;
@@ -1088,6 +1093,7 @@ static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
return;
mutex_lock(&pcr->pcr_mutex);
+ pm_runtime_get_sync(dev);
rtsx_pci_start_run(pcr);
@@ -1121,6 +1127,8 @@ static void sdmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
rtsx_pci_switch_clock(pcr, ios->clock, host->ssc_depth,
host->initial_mode, host->double_clk, host->vpclk);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
mutex_unlock(&pcr->pcr_mutex);
}
@@ -1128,6 +1136,7 @@ static int sdmmc_get_ro(struct mmc_host *mmc)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
struct rtsx_pcr *pcr = host->pcr;
+ struct device *dev = &host->pdev->dev;
int ro = 0;
u32 val;
@@ -1135,6 +1144,7 @@ static int sdmmc_get_ro(struct mmc_host *mmc)
return -ENOMEDIUM;
mutex_lock(&pcr->pcr_mutex);
+ pm_runtime_get_sync(dev);
rtsx_pci_start_run(pcr);
@@ -1144,6 +1154,8 @@ static int sdmmc_get_ro(struct mmc_host *mmc)
if (val & SD_WRITE_PROTECT)
ro = 1;
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
mutex_unlock(&pcr->pcr_mutex);
return ro;
@@ -1153,6 +1165,7 @@ static int sdmmc_get_cd(struct mmc_host *mmc)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
struct rtsx_pcr *pcr = host->pcr;
+ struct device *dev = &host->pdev->dev;
int cd = 0;
u32 val;
@@ -1160,6 +1173,7 @@ static int sdmmc_get_cd(struct mmc_host *mmc)
return cd;
mutex_lock(&pcr->pcr_mutex);
+ pm_runtime_get_sync(dev);
rtsx_pci_start_run(pcr);
@@ -1169,6 +1183,8 @@ static int sdmmc_get_cd(struct mmc_host *mmc)
if (val & SD_EXIST)
cd = 1;
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
mutex_unlock(&pcr->pcr_mutex);
return cd;
@@ -1251,6 +1267,7 @@ static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
struct rtsx_pcr *pcr = host->pcr;
+ struct device *dev = &host->pdev->dev;
int err = 0;
u8 voltage;
@@ -1265,6 +1282,7 @@ static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
return err;
mutex_lock(&pcr->pcr_mutex);
+ pm_runtime_get_sync(dev);
rtsx_pci_start_run(pcr);
@@ -1294,6 +1312,8 @@ static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
err = rtsx_pci_write_register(pcr, SD_BUS_STAT,
SD_CLK_TOGGLE_EN | SD_CLK_FORCE_STOP, 0);
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
mutex_unlock(&pcr->pcr_mutex);
return err;
@@ -1303,6 +1323,7 @@ static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
{
struct realtek_pci_sdmmc *host = mmc_priv(mmc);
struct rtsx_pcr *pcr = host->pcr;
+ struct device *dev = &host->pdev->dev;
int err = 0;
if (host->eject)
@@ -1313,6 +1334,7 @@ static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
return err;
mutex_lock(&pcr->pcr_mutex);
+ pm_runtime_get_sync(dev);
rtsx_pci_start_run(pcr);
@@ -1345,6 +1367,8 @@ static int sdmmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
err = sd_change_phase(host, DDR50_RX_PHASE(pcr), true);
out:
+ pm_runtime_mark_last_busy(dev);
+ pm_runtime_put_autosuspend(dev);
mutex_unlock(&pcr->pcr_mutex);
return err;
@@ -1495,12 +1519,12 @@ static int rtsx_pci_sdmmc_drv_probe(struct platform_device *pdev)
realtek_init_host(host);
- if (pcr->rtd3_en) {
- pm_runtime_set_autosuspend_delay(&pdev->dev, 5000);
- pm_runtime_use_autosuspend(&pdev->dev);
- pm_runtime_enable(&pdev->dev);
- }
-
+ pm_runtime_no_callbacks(&pdev->dev);
+ pm_runtime_set_active(&pdev->dev);
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_set_autosuspend_delay(&pdev->dev, 5000);
+ pm_runtime_mark_last_busy(&pdev->dev);
+ pm_runtime_use_autosuspend(&pdev->dev);
mmc_add_host(mmc);
@@ -1521,11 +1545,6 @@ static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev)
pcr->slots[RTSX_SD_CARD].card_event = NULL;
mmc = host->mmc;
- if (pcr->rtd3_en) {
- pm_runtime_dont_use_autosuspend(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
- }
-
cancel_work_sync(&host->work);
mutex_lock(&host->host_mutex);
@@ -1548,6 +1567,9 @@ static int rtsx_pci_sdmmc_drv_remove(struct platform_device *pdev)
flush_work(&host->work);
+ pm_runtime_dont_use_autosuspend(&pdev->dev);
+ pm_runtime_disable(&pdev->dev);
+
mmc_free_host(mmc);
dev_dbg(&(pdev->dev),
--
2.33.1
next reply other threads:[~2022-01-20 14:50 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-20 14:50 Kai-Heng Feng [this message]
2022-01-20 14:50 ` [PATCH 2/4] misc: rtsx: Rework runtime power management flow Kai-Heng Feng
2022-01-21 1:40 ` [PATCH v2 " Kai-Heng Feng
2022-01-21 3:57 ` Ricky WU
2022-01-21 4:08 ` Kai-Heng Feng
2022-01-21 4:15 ` Ricky WU
2022-01-21 4:17 ` Kai-Heng Feng
2022-01-21 6:31 ` [PATCH v3 " Kai-Heng Feng
2022-01-21 9:58 ` Ricky WU
2022-01-21 12:39 ` Kai-Heng Feng
2022-01-24 3:26 ` Ricky WU
2022-01-24 4:53 ` Kai-Heng Feng
2022-01-24 5:10 ` Ricky WU
2022-01-24 5:26 ` Kai-Heng Feng
2022-01-24 5:47 ` [PATCH v4 1/4] mmc: rtsx: Use pm_runtime_{get,put}() to handle runtime PM Kai-Heng Feng
2022-01-24 5:47 ` [PATCH v4 2/4] misc: rtsx: Rework runtime power management flow Kai-Heng Feng
2022-01-24 5:47 ` [PATCH v4 3/4] misc: rtsx: Cleanup power management ops Kai-Heng Feng
2022-01-24 5:47 ` [PATCH v4 4/4] misc: rtsx: Quiesce rts5249 on system suspend Kai-Heng Feng
2022-01-24 7:28 ` [PATCH v5 1/4] mmc: rtsx: Use pm_runtime_{get,put}() to handle runtime PM Kai-Heng Feng
2022-01-24 7:28 ` [PATCH v5 2/4] misc: rtsx: Rework runtime power management flow Kai-Heng Feng
2022-01-24 7:28 ` [PATCH v5 3/4] misc: rtsx: Cleanup power management ops Kai-Heng Feng
2022-01-24 7:28 ` [PATCH v5 4/4] misc: rtsx: Quiesce rts5249 on system suspend Kai-Heng Feng
2022-01-25 5:50 ` [PATCH v6 1/4] mmc: rtsx: Use pm_runtime_{get,put}() to handle runtime PM Kai-Heng Feng
2022-01-25 5:50 ` [PATCH v6 2/4] misc: rtsx: Rework runtime power management flow Kai-Heng Feng
2022-01-25 6:38 ` Ricky WU
2022-01-25 5:50 ` [PATCH v6 3/4] misc: rtsx: Cleanup power management ops Kai-Heng Feng
2022-01-25 6:38 ` Ricky WU
2022-01-25 5:50 ` [PATCH v6 4/4] misc: rtsx: Quiesce rts5249 on system suspend Kai-Heng Feng
2022-01-25 6:38 ` Ricky WU
2022-01-25 6:37 ` [PATCH v6 1/4] mmc: rtsx: Use pm_runtime_{get,put}() to handle runtime PM Ricky WU
2022-02-04 12:28 ` Ulf Hansson
2022-02-16 4:21 ` Kai-Heng Feng
2022-02-16 10:22 ` Ulf Hansson
2022-01-20 14:50 ` [PATCH 3/4] misc: rtsx: Cleanup power management ops Kai-Heng Feng
2022-01-20 14:50 ` [PATCH 4/4] misc: rtsx: Quiesce rts5249 on system suspend Kai-Heng Feng
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