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MMC host: 

- mtk-sd: Fix dma hang issues
  - sdhci-pci-o2micro: Fix card detect by dealing with debouncing
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Merge tag 'mmc-v5.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:

 - mtk-sd: Fix dma hang issues

 - sdhci-pci-o2micro: Fix card detect by dealing with debouncing

* tag 'mmc-v5.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: mediatek: wait dma stop bit reset to 0
  mmc: sdhci-pci-o2micro: Fix card detect by dealing with debouncing
This commit is contained in:
Linus Torvalds 2022-06-23 08:55:37 -05:00
parent ddfe80311b 89bcd9a64b
commit f410c3e000
2 changed files with 14 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/mmc/host/mtk-sd.c
View File

@ -1356,7 +1356,7 @@ static void msdc_data_xfer_next(struct msdc_host *host, struct mmc_request *mrq)
msdc_request_done(host, mrq);
}
static bool msdc_data_xfer_done(struct msdc_host *host, u32 events,
static void msdc_data_xfer_done(struct msdc_host *host, u32 events,
struct mmc_request *mrq, struct mmc_data *data)
{
struct mmc_command *stop;
@ -1376,7 +1376,7 @@ static bool msdc_data_xfer_done(struct msdc_host *host, u32 events,
spin_unlock_irqrestore(&host->lock, flags);
if (done)
return true;
return;
stop = data->stop;
if (check_data || (stop && stop->error)) {
@ -1385,12 +1385,15 @@ static bool msdc_data_xfer_done(struct msdc_host *host, u32 events,
sdr_set_field(host->base + MSDC_DMA_CTRL, MSDC_DMA_CTRL_STOP,
1);
ret = readl_poll_timeout_atomic(host->base + MSDC_DMA_CTRL, val,
!(val & MSDC_DMA_CTRL_STOP), 1, 20000);
if (ret)
dev_dbg(host->dev, "DMA stop timed out\n");
ret = readl_poll_timeout_atomic(host->base + MSDC_DMA_CFG, val,
!(val & MSDC_DMA_CFG_STS), 1, 20000);
if (ret) {
dev_dbg(host->dev, "DMA stop timed out\n");
return false;
}
if (ret)
dev_dbg(host->dev, "DMA inactive timed out\n");
sdr_clr_bits(host->base + MSDC_INTEN, data_ints_mask);
dev_dbg(host->dev, "DMA stop\n");
@ -1415,9 +1418,7 @@ static bool msdc_data_xfer_done(struct msdc_host *host, u32 events,
}
msdc_data_xfer_next(host, mrq);
done = true;
}
return done;
}
static void msdc_set_buswidth(struct msdc_host *host, u32 width)
@ -2416,6 +2417,9 @@ static void msdc_cqe_disable(struct mmc_host *mmc, bool recovery)
if (recovery) {
sdr_set_field(host->base + MSDC_DMA_CTRL,
MSDC_DMA_CTRL_STOP, 1);
if (WARN_ON(readl_poll_timeout(host->base + MSDC_DMA_CTRL, val,
!(val & MSDC_DMA_CTRL_STOP), 1, 3000)))
return;
if (WARN_ON(readl_poll_timeout(host->base + MSDC_DMA_CFG, val,
!(val & MSDC_DMA_CFG_STS), 1, 3000)))
return;

2
drivers/mmc/host/sdhci-pci-o2micro.c
View File

@ -152,6 +152,8 @@ static int sdhci_o2_get_cd(struct mmc_host *mmc)
if (!(sdhci_readw(host, O2_PLL_DLL_WDT_CONTROL1) & O2_PLL_LOCK_STATUS))
sdhci_o2_enable_internal_clock(host);
else
sdhci_o2_wait_card_detect_stable(host);
return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
}