| Message ID | 1444926346-29763-2-git-send-email-mw@semihalf.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 15 October 2015 at 18:25, Marcin Wojtas <mw@semihalf.com> wrote: > When resuming from suspend on Armada 38x SoC MBus windows have to be > re-configured and for that purpose mv_conf_mbus_windows function needed > rework. MBus windows register base address obtaining was moved to > armada_38x_quirks function in order to be kept in pxa global structure, > because it is used during a resume. > > This commit fixes resuming from suspend by calling MBus windows > configuration routine and therefore enabling proper DMA operation. > > Signed-off-by: Marcin Wojtas <mw@semihalf.com> > --- > drivers/mmc/host/sdhci-pxav3.c | 35 ++++++++++++++++------------------- > 1 file changed, 16 insertions(+), 19 deletions(-) > > diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c > index f5edf9d..54a253c0 100644 > --- a/drivers/mmc/host/sdhci-pxav3.c > +++ b/drivers/mmc/host/sdhci-pxav3.c > @@ -63,6 +63,7 @@ struct sdhci_pxa { > struct clk *clk_io; > u8 power_mode; > void __iomem *sdio3_conf_reg; > + void __iomem *mbus_win_regs; > }; > > /* > @@ -81,30 +82,16 @@ struct sdhci_pxa { > #define SDIO3_CONF_CLK_INV BIT(0) > #define SDIO3_CONF_SD_FB_CLK BIT(2) > > -static int mv_conf_mbus_windows(struct platform_device *pdev, > +static int mv_conf_mbus_windows(struct device *dev, void __iomem *regs, > const struct mbus_dram_target_info *dram) > { > int i; > - void __iomem *regs; > - struct resource *res; > > if (!dram) { > - dev_err(&pdev->dev, "no mbus dram info\n"); > - return -EINVAL; > - } > - > - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); > - if (!res) { > - dev_err(&pdev->dev, "cannot get mbus registers\n"); > + dev_err(dev, "no mbus dram info\n"); > return -EINVAL; > } > > - regs = ioremap(res->start, resource_size(res)); > - if (!regs) { > - dev_err(&pdev->dev, "cannot map mbus registers\n"); > - return -ENOMEM; > - } > - > for (i = 0; i < SDHCI_MAX_WIN_NUM; i++) { > writel(0, regs + SDHCI_WINDOW_CTRL(i)); > writel(0, regs + SDHCI_WINDOW_BASE(i)); > @@ -122,8 +109,6 @@ static int mv_conf_mbus_windows(struct platform_device *pdev, > writel(cs->base, regs + SDHCI_WINDOW_BASE(i)); > } > > - iounmap(regs); > - > return 0; > } > > @@ -135,6 +120,11 @@ static int armada_38x_quirks(struct platform_device *pdev, > struct sdhci_pxa *pxa = pltfm_host->priv; > struct resource *res; > > + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mbus"); You change from using platform_get_resource(pdev, IORESOURCE_MEM, 1) to above name based lookup. I guess it's intentional, but there's no information about it in the change-log, perhaps add it? > + pxa->mbus_win_regs = devm_ioremap_resource(&pdev->dev, res); > + if (IS_ERR(pxa->mbus_win_regs)) > + return PTR_ERR(pxa->mbus_win_regs); > + > host->quirks &= ~SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN; > host->quirks |= SDHCI_QUIRK_MISSING_CAPS; > res = platform_get_resource_byname(pdev, IORESOURCE_MEM, > @@ -403,7 +393,8 @@ static int sdhci_pxav3_probe(struct platform_device *pdev) > ret = armada_38x_quirks(pdev, host); > if (ret < 0) > goto err_mbus_win; > - ret = mv_conf_mbus_windows(pdev, mv_mbus_dram_info()); > + ret = mv_conf_mbus_windows(&pdev->dev, pxa->mbus_win_regs, > + mv_mbus_dram_info()); > if (ret < 0) > goto err_mbus_win; > } > @@ -520,6 +511,12 @@ static int sdhci_pxav3_resume(struct device *dev) > { > int ret; > struct sdhci_host *host = dev_get_drvdata(dev); > + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); > + struct sdhci_pxa *pxa = pltfm_host->priv; > + > + if (pxa->mbus_win_regs) > + ret = mv_conf_mbus_windows(dev, pxa->mbus_win_regs, > + mv_mbus_dram_info()); > > pm_runtime_get_sync(dev); > ret = sdhci_resume_host(host); > -- > 1.8.3.1 > Kind regards Uffe -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Ulf 2015-10-22 15:29 GMT+02:00 Ulf Hansson <ulf.hansson@linaro.org>: > On 15 October 2015 at 18:25, Marcin Wojtas <mw@semihalf.com> wrote: >> When resuming from suspend on Armada 38x SoC MBus windows have to be >> re-configured and for that purpose mv_conf_mbus_windows function needed >> rework. MBus windows register base address obtaining was moved to >> armada_38x_quirks function in order to be kept in pxa global structure, >> because it is used during a resume. >> >> This commit fixes resuming from suspend by calling MBus windows >> configuration routine and therefore enabling proper DMA operation. >> >> Signed-off-by: Marcin Wojtas <mw@semihalf.com> >> --- >> drivers/mmc/host/sdhci-pxav3.c | 35 ++++++++++++++++------------------- >> 1 file changed, 16 insertions(+), 19 deletions(-) >> >> diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c >> index f5edf9d..54a253c0 100644 >> --- a/drivers/mmc/host/sdhci-pxav3.c >> +++ b/drivers/mmc/host/sdhci-pxav3.c >> @@ -63,6 +63,7 @@ struct sdhci_pxa { >> struct clk *clk_io; >> u8 power_mode; >> void __iomem *sdio3_conf_reg; >> + void __iomem *mbus_win_regs; >> }; >> >> /* >> @@ -81,30 +82,16 @@ struct sdhci_pxa { >> #define SDIO3_CONF_CLK_INV BIT(0) >> #define SDIO3_CONF_SD_FB_CLK BIT(2) >> >> -static int mv_conf_mbus_windows(struct platform_device *pdev, >> +static int mv_conf_mbus_windows(struct device *dev, void __iomem *regs, >> const struct mbus_dram_target_info *dram) >> { >> int i; >> - void __iomem *regs; >> - struct resource *res; >> >> if (!dram) { >> - dev_err(&pdev->dev, "no mbus dram info\n"); >> - return -EINVAL; >> - } >> - >> - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); >> - if (!res) { >> - dev_err(&pdev->dev, "cannot get mbus registers\n"); >> + dev_err(dev, "no mbus dram info\n"); >> return -EINVAL; >> } >> >> - regs = ioremap(res->start, resource_size(res)); >> - if (!regs) { >> - dev_err(&pdev->dev, "cannot map mbus registers\n"); >> - return -ENOMEM; >> - } >> - >> for (i = 0; i < SDHCI_MAX_WIN_NUM; i++) { >> writel(0, regs + SDHCI_WINDOW_CTRL(i)); >> writel(0, regs + SDHCI_WINDOW_BASE(i)); >> @@ -122,8 +109,6 @@ static int mv_conf_mbus_windows(struct platform_device *pdev, >> writel(cs->base, regs + SDHCI_WINDOW_BASE(i)); >> } >> >> - iounmap(regs); >> - >> return 0; >> } >> >> @@ -135,6 +120,11 @@ static int armada_38x_quirks(struct platform_device *pdev, >> struct sdhci_pxa *pxa = pltfm_host->priv; >> struct resource *res; >> >> + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mbus"); > > You change from using platform_get_resource(pdev, IORESOURCE_MEM, 1) > to above name based lookup. > > I guess it's intentional, but there's no information about it in the > change-log, perhaps add it? > Sure, good point. Best regards, Marcin -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c index f5edf9d..54a253c0 100644 --- a/drivers/mmc/host/sdhci-pxav3.c +++ b/drivers/mmc/host/sdhci-pxav3.c @@ -63,6 +63,7 @@ struct sdhci_pxa { struct clk *clk_io; u8 power_mode; void __iomem *sdio3_conf_reg; + void __iomem *mbus_win_regs; }; /* @@ -81,30 +82,16 @@ struct sdhci_pxa { #define SDIO3_CONF_CLK_INV BIT(0) #define SDIO3_CONF_SD_FB_CLK BIT(2) -static int mv_conf_mbus_windows(struct platform_device *pdev, +static int mv_conf_mbus_windows(struct device *dev, void __iomem *regs, const struct mbus_dram_target_info *dram) { int i; - void __iomem *regs; - struct resource *res; if (!dram) { - dev_err(&pdev->dev, "no mbus dram info\n"); - return -EINVAL; - } - - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!res) { - dev_err(&pdev->dev, "cannot get mbus registers\n"); + dev_err(dev, "no mbus dram info\n"); return -EINVAL; } - regs = ioremap(res->start, resource_size(res)); - if (!regs) { - dev_err(&pdev->dev, "cannot map mbus registers\n"); - return -ENOMEM; - } - for (i = 0; i < SDHCI_MAX_WIN_NUM; i++) { writel(0, regs + SDHCI_WINDOW_CTRL(i)); writel(0, regs + SDHCI_WINDOW_BASE(i)); @@ -122,8 +109,6 @@ static int mv_conf_mbus_windows(struct platform_device *pdev, writel(cs->base, regs + SDHCI_WINDOW_BASE(i)); } - iounmap(regs); - return 0; } @@ -135,6 +120,11 @@ static int armada_38x_quirks(struct platform_device *pdev, struct sdhci_pxa *pxa = pltfm_host->priv; struct resource *res; + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mbus"); + pxa->mbus_win_regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(pxa->mbus_win_regs)) + return PTR_ERR(pxa->mbus_win_regs); + host->quirks &= ~SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN; host->quirks |= SDHCI_QUIRK_MISSING_CAPS; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, @@ -403,7 +393,8 @@ static int sdhci_pxav3_probe(struct platform_device *pdev) ret = armada_38x_quirks(pdev, host); if (ret < 0) goto err_mbus_win; - ret = mv_conf_mbus_windows(pdev, mv_mbus_dram_info()); + ret = mv_conf_mbus_windows(&pdev->dev, pxa->mbus_win_regs, + mv_mbus_dram_info()); if (ret < 0) goto err_mbus_win; } @@ -520,6 +511,12 @@ static int sdhci_pxav3_resume(struct device *dev) { int ret; struct sdhci_host *host = dev_get_drvdata(dev); + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_pxa *pxa = pltfm_host->priv; + + if (pxa->mbus_win_regs) + ret = mv_conf_mbus_windows(dev, pxa->mbus_win_regs, + mv_mbus_dram_info()); pm_runtime_get_sync(dev); ret = sdhci_resume_host(host);
When resuming from suspend on Armada 38x SoC MBus windows have to be re-configured and for that purpose mv_conf_mbus_windows function needed rework. MBus windows register base address obtaining was moved to armada_38x_quirks function in order to be kept in pxa global structure, because it is used during a resume. This commit fixes resuming from suspend by calling MBus windows configuration routine and therefore enabling proper DMA operation. Signed-off-by: Marcin Wojtas <mw@semihalf.com> --- drivers/mmc/host/sdhci-pxav3.c | 35 ++++++++++++++++------------------- 1 file changed, 16 insertions(+), 19 deletions(-)