diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/tmio_mmc_pio.c | 55 |
1 files changed, 32 insertions, 23 deletions
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index 5c2e5a36258a..d63d292933b4 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -144,7 +144,8 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0000); host->sdio_irq_enabled = false; - pm_runtime_put(mmc_dev(mmc)); + pm_runtime_mark_last_busy(mmc_dev(mmc)); + pm_runtime_put_autosuspend(mmc_dev(mmc)); } } @@ -252,6 +253,9 @@ static void tmio_mmc_reset_work(struct work_struct *work) tmio_mmc_abort_dma(host); mmc_request_done(host->mmc, mrq); + + pm_runtime_mark_last_busy(mmc_dev(host->mmc)); + pm_runtime_put_autosuspend(mmc_dev(host->mmc)); } /* called with host->lock held, interrupts disabled */ @@ -281,6 +285,9 @@ static void tmio_mmc_finish_request(struct tmio_mmc_host *host) tmio_mmc_abort_dma(host); mmc_request_done(host->mmc, mrq); + + pm_runtime_mark_last_busy(mmc_dev(host->mmc)); + pm_runtime_put_autosuspend(mmc_dev(host->mmc)); } static void tmio_mmc_done_work(struct work_struct *work) @@ -735,6 +742,8 @@ static void tmio_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq) spin_unlock_irqrestore(&host->lock, flags); + pm_runtime_get_sync(mmc_dev(mmc)); + if (mrq->data) { ret = tmio_mmc_start_data(host, mrq->data); if (ret) @@ -753,6 +762,9 @@ fail: host->mrq = NULL; mrq->cmd->error = ret; mmc_request_done(mmc, mrq); + + pm_runtime_mark_last_busy(mmc_dev(mmc)); + pm_runtime_put_autosuspend(mmc_dev(mmc)); } static int tmio_mmc_clk_update(struct mmc_host *mmc) @@ -831,6 +843,8 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) struct device *dev = &host->pdev->dev; unsigned long flags; + pm_runtime_get_sync(mmc_dev(mmc)); + mutex_lock(&host->ios_lock); spin_lock_irqsave(&host->lock, flags); @@ -866,7 +880,6 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (ios->power_mode == MMC_POWER_ON && ios->clock) { if (host->power != TMIO_MMC_ON_RUN) { tmio_mmc_clk_update(mmc); - pm_runtime_get_sync(dev); if (host->resuming) { tmio_mmc_reset(host); host->resuming = false; @@ -896,7 +909,6 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (old_power == TMIO_MMC_ON_RUN) { tmio_mmc_clk_stop(host); - pm_runtime_put(dev); if (pdata->clk_disable) pdata->clk_disable(host->pdev); } @@ -923,6 +935,9 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) host->mrq = NULL; mutex_unlock(&host->ios_lock); + + pm_runtime_mark_last_busy(mmc_dev(mmc)); + pm_runtime_put_autosuspend(mmc_dev(mmc)); } static int tmio_mmc_get_ro(struct mmc_host *mmc) @@ -933,8 +948,13 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc) if (ret >= 0) return ret; - return !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) || - (sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT)); + pm_runtime_get_sync(mmc_dev(mmc)); + ret = !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) || + (sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT)); + pm_runtime_mark_last_busy(mmc_dev(mmc)); + pm_runtime_put_autosuspend(mmc_dev(mmc)); + + return ret; } static const struct mmc_host_ops tmio_mmc_ops = { @@ -1040,27 +1060,14 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, mmc->slot.cd_irq >= 0); _host->power = TMIO_MMC_OFF_STOP; - pm_runtime_enable(&pdev->dev); - ret = pm_runtime_resume(&pdev->dev); - if (ret < 0) - goto pm_disable; - if (tmio_mmc_clk_update(mmc) < 0) { mmc->f_max = pdata->hclk; mmc->f_min = mmc->f_max / 512; } /* - * There are 4 different scenarios for the card detection: - * 1) an external gpio irq handles the cd (best for power savings) - * 2) internal sdhi irq handles the cd - * 3) a worker thread polls the sdhi - indicated by MMC_CAP_NEEDS_POLL - * 4) the medium is non-removable - indicated by MMC_CAP_NONREMOVABLE - * - * While we increment the runtime PM counter for all scenarios when - * the mmc core activates us by calling an appropriate set_ios(), we - * must additionally ensure that in case 2) the tmio mmc hardware stays - * powered on during runtime for the card detection to work. + * While using internal tmio hardware logic for card detection, we need + * to ensure it stays powered for it to work. */ if (_host->native_hotplug) pm_runtime_get_noresume(&pdev->dev); @@ -1098,6 +1105,11 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, /* See if we also get DMA */ tmio_mmc_request_dma(_host, pdata); + pm_runtime_set_active(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, 50); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_enable(&pdev->dev); + ret = mmc_add_host(mmc); if (pdata->clk_disable) pdata->clk_disable(pdev); @@ -1120,9 +1132,6 @@ int tmio_mmc_host_probe(struct tmio_mmc_host **host, return 0; -pm_disable: - pm_runtime_disable(&pdev->dev); - iounmap(_host->ctl); host_free: mmc_free_host(mmc); |