* Re: [PATCH v2 2/2] mmc: mxs-mmc: add non-removable property [not found] ` <1365166070-9370-3-git-send-email-mkl@pengutronix.de> @ 2013-04-09 15:14 ` Hector Palacios 2013-04-09 15:21 ` Hector Palacios 0 siblings, 1 reply; 5+ messages in thread From: Hector Palacios @ 2013-04-09 15:14 UTC (permalink / raw) To: Marc Kleine-Budde Cc: linux-mmc, kernel, cjb, aletes.xgr, linux-kernel@vger.kernel.org, Marek Vasut, Shawn Guo Dear Marc Kleine-Budde, On 04/05/2013 02:47 PM, Marc Kleine-Budde wrote: > Some boards have non removable cards like eMMC. Handle such case. > > Acked-by: Shawn Guo <shawn.guo@linaro.org> > Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> > --- > changes since v1: > - fix removeable typo > > drivers/mmc/host/mxs-mmc.c | 10 +++++++--- > 1 file changed, 7 insertions(+), 3 deletions(-) > > diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c > index 0cdf1f6..c231881 100644 > --- a/drivers/mmc/host/mxs-mmc.c > +++ b/drivers/mmc/host/mxs-mmc.c > @@ -73,6 +73,7 @@ struct mxs_mmc_host { > int wp_gpio; > bool wp_inverted; > bool cd_inverted; > + bool non_removable; > }; > > static int mxs_mmc_get_ro(struct mmc_host *mmc) > @@ -96,8 +97,9 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) > struct mxs_mmc_host *host = mmc_priv(mmc); > struct mxs_ssp *ssp = &host->ssp; > > - return !(readl(ssp->base + HW_SSP_STATUS(ssp)) & > - BM_SSP_STATUS_CARD_DETECT)) ^ host->cd_inverted; > + return host->non_removable || > + !(readl(ssp->base + HW_SSP_STATUS(ssp)) & > + BM_SSP_STATUS_CARD_DETECT) ^ host->cd_inverted; > } > > static void mxs_mmc_reset(struct mxs_mmc_host *host) > @@ -687,8 +689,10 @@ static int mxs_mmc_probe(struct platform_device *pdev) > mmc->caps |= MMC_CAP_4_BIT_DATA; > else if (bus_width == 8) > mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA; > + host->non_removable = of_property_read_bool(np, "non-removable"); > + if (host->non_removable) > + mmc->caps |= MMC_CAP_NONREMOVABLE; > host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags); > - > if (flags & OF_GPIO_ACTIVE_LOW) > host->wp_inverted = 1; > > It looks like Alexander and I were looking at the same in different threads: http://comments.gmane.org/gmane.linux.kernel.mmc/19964 http://comments.gmane.org/gmane.linux.kernel/1471409 The following completes your 2/2 patch with broken-cd support as well (in both cases system must assume card is always present): diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 206fe49..7a60097 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -72,6 +72,8 @@ struct mxs_mmc_host { int sdio_irq_en; int wp_gpio; bool wp_inverted; + bool broken_cd; + bool non_removable; }; static int mxs_mmc_get_ro(struct mmc_host *mmc) @@ -95,7 +97,8 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) struct mxs_mmc_host *host = mmc_priv(mmc); struct mxs_ssp *ssp = &host->ssp; - return !(readl(ssp->base + HW_SSP_STATUS(ssp)) & + return host->non_removable || host->broken_cd || + !(readl(ssp->base + HW_SSP_STATUS(ssp)) & BM_SSP_STATUS_CARD_DETECT); } @@ -686,8 +689,11 @@ static int mxs_mmc_probe(struct platform_device *pdev) mmc->caps |= MMC_CAP_4_BIT_DATA; else if (bus_width == 8) mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA; + host->broken_cd = of_property_read_bool(np, "broken-cd"); + host->non_removable = of_property_read_bool(np, "non-removable"); + if (host->non_removable) + mmc->caps |= MMC_CAP_NONREMOVABLE; host->wp_gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags); - if (flags & OF_GPIO_ACTIVE_LOW) host->wp_inverted = 1; Regards, -- Héctor Palacios ^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH v2 2/2] mmc: mxs-mmc: add non-removable property 2013-04-09 15:14 ` [PATCH v2 2/2] mmc: mxs-mmc: add non-removable property Hector Palacios @ 2013-04-09 15:21 ` Hector Palacios 2013-04-09 16:34 ` Marc Kleine-Budde 0 siblings, 1 reply; 5+ messages in thread From: Hector Palacios @ 2013-04-09 15:21 UTC (permalink / raw) To: Marc Kleine-Budde Cc: linux-mmc, kernel, cjb, aletes.xgr, linux-kernel@vger.kernel.org, Marek Vasut, Shawn Guo On 04/09/2013 05:14 PM, Hector Palacios wrote: > @@ -95,7 +97,8 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) > struct mxs_mmc_host *host = mmc_priv(mmc); > struct mxs_ssp *ssp = &host->ssp; > > - return !(readl(ssp->base + HW_SSP_STATUS(ssp)) & > + return host->non_removable || host->broken_cd || > + !(readl(ssp->base + HW_SSP_STATUS(ssp)) & > BM_SSP_STATUS_CARD_DETECT); > } Sorry, I missed your original XOR here, when merging my changes: @@ -95,7 +97,8 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) struct mxs_mmc_host *host = mmc_priv(mmc); struct mxs_ssp *ssp = &host->ssp; - return !(readl(ssp->base + HW_SSP_STATUS(ssp)) & + return host->non_removable || host->broken_cd || + !(readl(ssp->base + HW_SSP_STATUS(ssp)) & + BM_SSP_STATUS_CARD_DETECT) ^ host->cd_inverted; } static void mxs_mmc_reset(struct mxs_mmc_host *host) Regards, -- Héctor Palacios ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v2 2/2] mmc: mxs-mmc: add non-removable property 2013-04-09 15:21 ` Hector Palacios @ 2013-04-09 16:34 ` Marc Kleine-Budde 2013-04-10 8:19 ` Hector Palacios 0 siblings, 1 reply; 5+ messages in thread From: Marc Kleine-Budde @ 2013-04-09 16:34 UTC (permalink / raw) To: Hector Palacios Cc: linux-mmc, kernel, cjb, aletes.xgr, linux-kernel@vger.kernel.org, Marek Vasut, Shawn Guo [-- Attachment #1: Type: text/plain, Size: 1007 bytes --] On 04/09/2013 05:21 PM, Hector Palacios wrote: > On 04/09/2013 05:14 PM, Hector Palacios wrote: >> @@ -95,7 +97,8 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) >> struct mxs_mmc_host *host = mmc_priv(mmc); >> struct mxs_ssp *ssp = &host->ssp; >> >> - return !(readl(ssp->base + HW_SSP_STATUS(ssp)) & >> + return host->non_removable || host->broken_cd || >> + !(readl(ssp->base + HW_SSP_STATUS(ssp)) & >> BM_SSP_STATUS_CARD_DETECT); >> } > > Sorry, I missed your original XOR here, when merging my changes: Can you send an incremental patch against my 2/2 with your Signed-off-by, I'll squash your patch into mine and repost the series. Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | [-- Attachment #2: OpenPGP digital signature --] [-- Type: application/pgp-signature, Size: 263 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH v2 2/2] mmc: mxs-mmc: add non-removable property 2013-04-09 16:34 ` Marc Kleine-Budde @ 2013-04-10 8:19 ` Hector Palacios 2013-04-10 9:16 ` Marc Kleine-Budde 0 siblings, 1 reply; 5+ messages in thread From: Hector Palacios @ 2013-04-10 8:19 UTC (permalink / raw) To: Marc Kleine-Budde Cc: linux-mmc@vger.kernel.org, kernel@pengutronix.de, cjb@laptop.org, aletes.xgr@gmail.com, linux-kernel@vger.kernel.org, Marek Vasut, Shawn Guo On Tue 09 Apr 2013 06:34:10 PM CEST, Marc Kleine-Budde wrote: > On 04/09/2013 05:21 PM, Hector Palacios wrote: >> On 04/09/2013 05:14 PM, Hector Palacios wrote: >>> @@ -95,7 +97,8 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) >>> struct mxs_mmc_host *host = mmc_priv(mmc); >>> struct mxs_ssp *ssp = &host->ssp; >>> >>> - return !(readl(ssp->base + HW_SSP_STATUS(ssp)) & >>> + return host->non_removable || host->broken_cd || >>> + !(readl(ssp->base + HW_SSP_STATUS(ssp)) & >>> BM_SSP_STATUS_CARD_DETECT); >>> } >> >> Sorry, I missed your original XOR here, when merging my changes: > > Can you send an incremental patch against my 2/2 with your > Signed-off-by, I'll squash your patch into mine and repost the series. Sure. Here it is: >From 18f6199947bc2681d2d63b307506019535018646 Mon Sep 17 00:00:00 2001 From: Hector Palacios <hector.palacios@digi.com> Date: Wed, 10 Apr 2013 09:16:31 +0200 Subject: [PATCH] mmc: mxs-mmc: handle 'broken-cd' property According to bindings documentation for mmc, the property 'broken-cd' can be used to indicate card-detection is not available and polling must be used instead. This patch retrieves this property and sets a custom flag. On the get_cd() hook, it returns 1 if the flag is set, to always assume the card is present. Signed-off-by: Hector Palacios <hector.palacios@digi.com> --- drivers/mmc/host/mxs-mmc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 75dee88..10c07a8 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -73,6 +73,7 @@ struct mxs_mmc_host { int wp_gpio; bool wp_inverted; bool cd_inverted; + bool broken_cd; bool non_removable; }; @@ -97,7 +98,7 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) struct mxs_mmc_host *host = mmc_priv(mmc); struct mxs_ssp *ssp = &host->ssp; - return host->non_removable || + return host->non_removable || host->broken_cd || !(readl(ssp->base + HW_SSP_STATUS(ssp)) & BM_SSP_STATUS_CARD_DETECT) ^ host->cd_inverted; } @@ -689,6 +690,7 @@ static int mxs_mmc_probe(struct platform_device *pdev) mmc->caps |= MMC_CAP_4_BIT_DATA; else if (bus_width == 8) mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA; + host->broken_cd = of_property_read_bool(np, "broken-cd"); host->non_removable = of_property_read_bool(np, "non-removable"); if (host->non_removable) mmc->caps |= MMC_CAP_NONREMOVABLE; -- 1.8.2 ^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH v2 2/2] mmc: mxs-mmc: add non-removable property 2013-04-10 8:19 ` Hector Palacios @ 2013-04-10 9:16 ` Marc Kleine-Budde 0 siblings, 0 replies; 5+ messages in thread From: Marc Kleine-Budde @ 2013-04-10 9:16 UTC (permalink / raw) To: Hector Palacios Cc: linux-mmc@vger.kernel.org, kernel@pengutronix.de, cjb@laptop.org, aletes.xgr@gmail.com, linux-kernel@vger.kernel.org, Marek Vasut, Shawn Guo [-- Attachment #1: Type: text/plain, Size: 1921 bytes --] On 04/10/2013 10:19 AM, Hector Palacios wrote: > On Tue 09 Apr 2013 06:34:10 PM CEST, Marc Kleine-Budde wrote: >> On 04/09/2013 05:21 PM, Hector Palacios wrote: >>> On 04/09/2013 05:14 PM, Hector Palacios wrote: >>>> @@ -95,7 +97,8 @@ static int mxs_mmc_get_cd(struct mmc_host *mmc) >>>> struct mxs_mmc_host *host = mmc_priv(mmc); >>>> struct mxs_ssp *ssp = &host->ssp; >>>> >>>> - return !(readl(ssp->base + HW_SSP_STATUS(ssp)) & >>>> + return host->non_removable || host->broken_cd || >>>> + !(readl(ssp->base + HW_SSP_STATUS(ssp)) & >>>> BM_SSP_STATUS_CARD_DETECT); >>>> } >>> >>> Sorry, I missed your original XOR here, when merging my changes: >> >> Can you send an incremental patch against my 2/2 with your >> Signed-off-by, I'll squash your patch into mine and repost the series. > > Sure. Here it is: > > From 18f6199947bc2681d2d63b307506019535018646 Mon Sep 17 00:00:00 2001 > From: Hector Palacios <hector.palacios@digi.com> > Date: Wed, 10 Apr 2013 09:16:31 +0200 > Subject: [PATCH] mmc: mxs-mmc: handle 'broken-cd' property > > According to bindings documentation for mmc, the property 'broken-cd' > can be used to indicate card-detection is not available and polling > must be used instead. This patch retrieves this property > and sets a custom flag. On the get_cd() hook, it returns 1 if > the flag is set, to always assume the card is present. > > Signed-off-by: Hector Palacios <hector.palacios@digi.com> Thanks, your patch description is so good, I'll keep your patch as 3 and repost the whole series. Marc P.S.: -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | [-- Attachment #2: OpenPGP digital signature --] [-- Type: application/pgp-signature, Size: 263 bytes --] ^ permalink raw reply [flat|nested] 5+ messages in thread
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