From 5b4258f6721f41b092c63f6ee71be76e9616718b Mon Sep 17 00:00:00 2001 From: Ricky Wu Date: Wed, 2 Dec 2020 14:58:57 +0800 Subject: misc: rtsx: rts5249 support runtime PM rtsx_pcr: add callback functions to support runtime PM add delay_work to put device to D3 after idle over 10 sec rts5249: add extra init flow for rtd3 and set rtd3_en from config setting rtsx_pci_sdmmc: child device support autosuspend Signed-off-by: Ricky Wu Link: https://lore.kernel.org/r/20201202065857.19412-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/cardreader/rtsx_pcr.c | 106 ++++++++++++++++++++++++++++++++++++- 1 file changed, 105 insertions(+), 1 deletion(-) (limited to 'drivers/misc/cardreader/rtsx_pcr.c') diff --git a/drivers/misc/cardreader/rtsx_pcr.c b/drivers/misc/cardreader/rtsx_pcr.c index 3612063cab09..2700d1997750 100644 --- a/drivers/misc/cardreader/rtsx_pcr.c +++ b/drivers/misc/cardreader/rtsx_pcr.c @@ -20,6 +20,8 @@ #include #include #include +#include +#include #include "rtsx_pcr.h" #include "rts5261.h" @@ -150,6 +152,12 @@ void rtsx_pci_start_run(struct rtsx_pcr *pcr) if (pcr->remove_pci) return; + if (pcr->rtd3_en) + if (pcr->is_runtime_suspended) { + pm_runtime_get(&(pcr->pci->dev)); + pcr->is_runtime_suspended = false; + } + if (pcr->state != PDEV_STAT_RUN) { pcr->state = PDEV_STAT_RUN; if (pcr->ops->enable_auto_blink) @@ -1081,6 +1089,16 @@ static void rtsx_pm_power_saving(struct rtsx_pcr *pcr) rtsx_comm_pm_power_saving(pcr); } +static void rtsx_pci_rtd3_work(struct work_struct *work) +{ + struct delayed_work *dwork = to_delayed_work(work); + struct rtsx_pcr *pcr = container_of(dwork, struct rtsx_pcr, rtd3_work); + + pcr_dbg(pcr, "--> %s\n", __func__); + if (!pcr->is_runtime_suspended) + pm_runtime_put(&(pcr->pci->dev)); +} + static void rtsx_pci_idle_work(struct work_struct *work) { struct delayed_work *dwork = to_delayed_work(work); @@ -1100,6 +1118,9 @@ static void rtsx_pci_idle_work(struct work_struct *work) rtsx_pm_power_saving(pcr); mutex_unlock(&pcr->pcr_mutex); + + if (pcr->rtd3_en) + mod_delayed_work(system_wq, &pcr->rtd3_work, msecs_to_jiffies(10000)); } static void rtsx_base_force_power_down(struct rtsx_pcr *pcr, u8 pm_state) @@ -1579,6 +1600,15 @@ static int rtsx_pci_probe(struct pci_dev *pcidev, rtsx_pcr_cells[i].platform_data = handle; rtsx_pcr_cells[i].pdata_size = sizeof(*handle); } + + if (pcr->rtd3_en) { + INIT_DELAYED_WORK(&pcr->rtd3_work, rtsx_pci_rtd3_work); + pm_runtime_allow(&pcidev->dev); + pm_runtime_enable(&pcidev->dev); + pcr->is_runtime_suspended = false; + } + + ret = mfd_add_devices(&pcidev->dev, pcr->id, rtsx_pcr_cells, ARRAY_SIZE(rtsx_pcr_cells), NULL, 0, NULL); if (ret < 0) @@ -1616,6 +1646,9 @@ static void rtsx_pci_remove(struct pci_dev *pcidev) struct pcr_handle *handle = pci_get_drvdata(pcidev); struct rtsx_pcr *pcr = handle->pcr; + if (pcr->rtd3_en) + pm_runtime_get_noresume(&pcr->pci->dev); + pcr->remove_pci = true; /* Disable interrupts at the pcr level */ @@ -1626,6 +1659,8 @@ static void rtsx_pci_remove(struct pci_dev *pcidev) cancel_delayed_work_sync(&pcr->carddet_work); cancel_delayed_work_sync(&pcr->idle_work); + if (pcr->rtd3_en) + cancel_delayed_work_sync(&pcr->rtd3_work); mfd_remove_devices(&pcidev->dev); @@ -1643,6 +1678,11 @@ static void rtsx_pci_remove(struct pci_dev *pcidev) idr_remove(&rtsx_pci_idr, pcr->id); spin_unlock(&rtsx_pci_lock); + if (pcr->rtd3_en) { + pm_runtime_disable(&pcr->pci->dev); + pm_runtime_put_noidle(&pcr->pci->dev); + } + kfree(pcr->slots); kfree(pcr); kfree(handle); @@ -1724,13 +1764,77 @@ static void rtsx_pci_shutdown(struct pci_dev *pcidev) pci_disable_msi(pcr->pci); } +static int rtsx_pci_runtime_suspend(struct device *device) +{ + struct pci_dev *pcidev = to_pci_dev(device); + struct pcr_handle *handle; + struct rtsx_pcr *pcr; + + handle = pci_get_drvdata(pcidev); + pcr = handle->pcr; + dev_dbg(&(pcidev->dev), "--> %s\n", __func__); + + cancel_delayed_work(&pcr->carddet_work); + cancel_delayed_work(&pcr->rtd3_work); + cancel_delayed_work(&pcr->idle_work); + + mutex_lock(&pcr->pcr_mutex); + rtsx_pci_power_off(pcr, HOST_ENTER_S3); + + free_irq(pcr->irq, (void *)pcr); + + mutex_unlock(&pcr->pcr_mutex); + + pcr->is_runtime_suspended = true; + + return 0; +} + +static int rtsx_pci_runtime_resume(struct device *device) +{ + struct pci_dev *pcidev = to_pci_dev(device); + struct pcr_handle *handle; + struct rtsx_pcr *pcr; + int ret = 0; + + handle = pci_get_drvdata(pcidev); + pcr = handle->pcr; + dev_dbg(&(pcidev->dev), "--> %s\n", __func__); + + mutex_lock(&pcr->pcr_mutex); + + rtsx_pci_write_register(pcr, HOST_SLEEP_STATE, 0x03, 0x00); + rtsx_pci_acquire_irq(pcr); + synchronize_irq(pcr->irq); + + if (pcr->ops->fetch_vendor_settings) + pcr->ops->fetch_vendor_settings(pcr); + + rtsx_pci_init_hw(pcr); + + if (pcr->slots[RTSX_SD_CARD].p_dev != NULL) { + pcr->slots[RTSX_SD_CARD].card_event( + pcr->slots[RTSX_SD_CARD].p_dev); + } + + schedule_delayed_work(&pcr->idle_work, msecs_to_jiffies(200)); + + mutex_unlock(&pcr->pcr_mutex); + return ret; +} + #else /* CONFIG_PM */ #define rtsx_pci_shutdown NULL +#define rtsx_pci_runtime_suspend NULL +#define rtsx_pic_runtime_resume NULL #endif /* CONFIG_PM */ -static SIMPLE_DEV_PM_OPS(rtsx_pci_pm_ops, rtsx_pci_suspend, rtsx_pci_resume); +static const struct dev_pm_ops rtsx_pci_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(rtsx_pci_suspend, rtsx_pci_resume) + SET_RUNTIME_PM_OPS(rtsx_pci_runtime_suspend, rtsx_pci_runtime_resume, NULL) +}; static struct pci_driver rtsx_pci_driver = { .name = DRV_NAME_RTSX_PCI, -- cgit