| Message ID | 20181125225217.23201-2-linus.walleij@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Use GPIO descriptors for CD/WP | expand |
On Sun, Nov 25, 2018 at 11:54 PM Linus Walleij <linus.walleij@linaro.org> wrote: > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> > --- > ChangeLog v1->v3: > - Resending on top of the applied patches. > - Hartley: it'd be great if you could test this series > on the Vision EP9307. > - Kuninori/Laurent: hope one of you has this Ecovec board > so you can test it too. BTW I think you can simply test this patch in isolation. No other patches needed. Yours, Linus Walleij
Hi Linus, Laurent > > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> > > --- > > ChangeLog v1->v3: > > - Resending on top of the applied patches. > > - Hartley: it'd be great if you could test this series > > on the Vision EP9307. > > - Kuninori/Laurent: hope one of you has this Ecovec board > > so you can test it too. > > BTW I think you can simply test this patch in isolation. > No other patches needed. Unfortunately, I don't have Ecovec anymore... It is very old board, very few chance to find it. Best regards --- Kuninori Morimoto
Hi Linus, Thank you for the patch. On Monday, 26 November 2018 00:52:07 EET Linus Walleij wrote: > Switch the SPI MMC driver to use GPIO descriptors internally > and just look those up using the standard slot GPIO > functions mmc_gpiod_request_cd() and mmc_gpiod_request_ro(). > Make sure to request index 0 and 1 in accordance with the > SPI MMC DT binding, It would be nice to update the mmc-spi-slot bindings to use cd-gpios and wp- gpios (of course keeping backward compatibility on the driver side). > and add the same GPIOs in machine > descriptor tables on all boards that use SPI MMC in > board files. > > The lines are flagged as GPIO_ACTIVE_[LOW|HIGH] as that is > what they are, but this will be ignored by the MMC slot > GPIO code that uses the *raw accessors and rely on the > caps2 flags MMC_CAP2_CD_ACTIVE_HIGH and > MMC_CAP2_RO_ACTIVE_HIGH for polarity inversion semantics > as of now. > > Cc: Hartley Sweeten <hsweeten@visionengravers.com> # Vision EP9307 > Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> > Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> > --- > ChangeLog v1->v3: > - Resending on top of the applied patches. > - Hartley: it'd be great if you could test this series > on the Vision EP9307. > - Kuninori/Laurent: hope one of you has this Ecovec board > so you can test it too. > --- > arch/arm/mach-ep93xx/simone.c | 14 +++++++++--- > arch/arm/mach-ep93xx/vision_ep9307.c | 17 ++++++++++---- > arch/sh/boards/mach-ecovec24/setup.c | 17 +++++++++++--- > drivers/mmc/host/mmc_spi.c | 27 ++++++++++++---------- > drivers/mmc/host/of_mmc_spi.c | 34 ---------------------------- > include/linux/spi/mmc_spi.h | 15 ------------ > 6 files changed, 53 insertions(+), 71 deletions(-) > > diff --git a/arch/arm/mach-ep93xx/simone.c b/arch/arm/mach-ep93xx/simone.c > index 41aa57581356..80ccb984d521 100644 > --- a/arch/arm/mach-ep93xx/simone.c > +++ b/arch/arm/mach-ep93xx/simone.c > @@ -25,6 +25,7 @@ > #include <linux/platform_data/video-ep93xx.h> > #include <linux/platform_data/spi-ep93xx.h> > #include <linux/gpio.h> > +#include <linux/gpio/machine.h> > > #include <mach/hardware.h> > #include <mach/gpio-ep93xx.h> > @@ -45,9 +46,15 @@ static struct ep93xxfb_mach_info __initdata > simone_fb_info = { static struct mmc_spi_platform_data simone_mmc_spi_data > = { > .detect_delay = 500, > .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, > - .flags = MMC_SPI_USE_CD_GPIO, > - .cd_gpio = EP93XX_GPIO_LINE_EGPIO0, > - .cd_debounce = 1, > +}; > + > +static struct gpiod_lookup_table simone_mmc_spi_gpio_table = { > + .dev_id = "mmc_spi.0", /* "mmc_spi" @ CS0 */ > + .table = { > + /* Card detect */ > + GPIO_LOOKUP_IDX("A", 0, NULL, 0, GPIO_ACTIVE_LOW), > + { }, > + }, > }; > > static struct spi_board_info simone_spi_devices[] __initdata = { > @@ -105,6 +112,7 @@ static void __init simone_init_machine(void) > ep93xx_register_fb(&simone_fb_info); > ep93xx_register_i2c(simone_i2c_board_info, > ARRAY_SIZE(simone_i2c_board_info)); > + gpiod_add_lookup_table(&simone_mmc_spi_gpio_table); > ep93xx_register_spi(&simone_spi_info, simone_spi_devices, > ARRAY_SIZE(simone_spi_devices)); > simone_register_audio(); > diff --git a/arch/arm/mach-ep93xx/vision_ep9307.c > b/arch/arm/mach-ep93xx/vision_ep9307.c index 5a0b6187990a..767ee64628dc > 100644 > --- a/arch/arm/mach-ep93xx/vision_ep9307.c > +++ b/arch/arm/mach-ep93xx/vision_ep9307.c > @@ -18,6 +18,7 @@ > #include <linux/platform_device.h> > #include <linux/irq.h> > #include <linux/gpio.h> > +#include <linux/gpio/machine.h> > #include <linux/fb.h> > #include <linux/io.h> > #include <linux/mtd/partitions.h> > @@ -202,13 +203,20 @@ static struct mmc_spi_platform_data > vision_spi_mmc_data = { .detect_delay = 100, > .powerup_msecs = 100, > .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, > - .flags = MMC_SPI_USE_CD_GPIO | MMC_SPI_USE_RO_GPIO, > - .cd_gpio = EP93XX_GPIO_LINE_EGPIO15, > - .cd_debounce = 1, > - .ro_gpio = EP93XX_GPIO_LINE_F(0), > .caps2 = MMC_CAP2_RO_ACTIVE_HIGH, > }; > > +static struct gpiod_lookup_table vision_spi_mmc_gpio_table = { > + .dev_id = "mmc_spi.2", /* "mmc_spi @ CS2 */ > + .table = { > + /* Card detect */ > + GPIO_LOOKUP_IDX("B", 7, NULL, 0, GPIO_ACTIVE_LOW), > + /* Write protect */ > + GPIO_LOOKUP_IDX("F", 0, NULL, 1, GPIO_ACTIVE_HIGH), > + { }, > + }, > +}; > + > /************************************************************************* > * SPI Bus > *************************************************************************/ > @@ -286,6 +294,7 @@ static void __init vision_init_machine(void) > > ep93xx_register_i2c(vision_i2c_info, > ARRAY_SIZE(vision_i2c_info)); > + gpiod_add_lookup_table(&vision_spi_mmc_gpio_table); > ep93xx_register_spi(&vision_spi_master, vision_spi_board_info, > ARRAY_SIZE(vision_spi_board_info)); > vision_register_i2s(); > diff --git a/arch/sh/boards/mach-ecovec24/setup.c > b/arch/sh/boards/mach-ecovec24/setup.c index 06a894526a0b..3097307b7cb7 > 100644 > --- a/arch/sh/boards/mach-ecovec24/setup.c > +++ b/arch/sh/boards/mach-ecovec24/setup.c > @@ -776,9 +776,19 @@ static struct mmc_spi_platform_data mmc_spi_info = { > .caps2 = MMC_CAP2_RO_ACTIVE_HIGH, > .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* 3.3V only */ > .setpower = mmc_spi_setpower, > - .flags = MMC_SPI_USE_CD_GPIO | MMC_SPI_USE_RO_GPIO, > - .cd_gpio = GPIO_PTY7, > - .ro_gpio = GPIO_PTY6, > +}; > + > +static struct gpiod_lookup_table mmc_spi_gpio_table = { > + .dev_id = "mmc_spi.0", /* device "mmc_spi" @ CS0 */ > + .table = { > + /* Card detect */ > + GPIO_LOOKUP_IDX("sh7724_pfc", GPIO_PTY7, NULL, 0, > + GPIO_ACTIVE_LOW), > + /* Write protect */ > + GPIO_LOOKUP_IDX("sh7724_pfc", GPIO_PTY6, NULL, 1, > + GPIO_ACTIVE_HIGH), > + { }, > + }, > }; > > static struct spi_board_info spi_bus[] = { > @@ -1282,6 +1292,7 @@ static int __init arch_setup(void) > gpio_request(GPIO_PTB6, NULL); /* 3.3V power control */ > gpio_direction_output(GPIO_PTB6, 0); /* disable power by default */ > > + gpiod_add_lookup_table(&mmc_spi_gpio_table); > spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus)); > #endif > > diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c > index 476e53d30128..10ba46b728e8 100644 > --- a/drivers/mmc/host/mmc_spi.c > +++ b/drivers/mmc/host/mmc_spi.c > @@ -1434,13 +1434,16 @@ static int mmc_spi_probe(struct spi_device *spi) > if (status != 0) > goto fail_add_host; > > - if (host->pdata && host->pdata->flags & MMC_SPI_USE_CD_GPIO) { > - status = mmc_gpio_request_cd(mmc, host->pdata->cd_gpio, > - host->pdata->cd_debounce); > - if (status != 0) > - goto fail_add_host; > - > - /* The platform has a CD GPIO signal that may support > + /* > + * Index 0 is card detect > + * Old boardfiles were specifying 1 ms as debounce > + */ > + status = mmc_gpiod_request_cd(mmc, NULL, 0, false, 1, NULL); As for patch 02/11, shouldn't the override argument be set to true ? > + if (status == -EPROBE_DEFER) > + goto fail_add_host; > + if (!status) { > + /* > + * The platform has a CD GPIO signal that may support > * interrupts, so let mmc_gpiod_request_cd_irq() decide > * if polling is needed or not. > */ > @@ -1448,12 +1451,12 @@ static int mmc_spi_probe(struct spi_device *spi) > mmc_gpiod_request_cd_irq(mmc); > } > > - if (host->pdata && host->pdata->flags & MMC_SPI_USE_RO_GPIO) { > + /* Index 1 is write protect/read only */ > + status = mmc_gpiod_request_ro(mmc, NULL, 1, false, 0, NULL); Same here. Apart from that, Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Please note that I don't have any of the boards above, so I haven't been able to test the changes. > + if (status == -EPROBE_DEFER) > + goto fail_add_host; > + if (!status) > has_ro = true; > - status = mmc_gpio_request_ro(mmc, host->pdata->ro_gpio); > - if (status != 0) > - goto fail_add_host; > - } > > dev_info(&spi->dev, "SD/MMC host %s%s%s%s%s\n", > dev_name(&mmc->class_dev), > diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c > index c9eed8436b6b..b294b221f225 100644 > --- a/drivers/mmc/host/of_mmc_spi.c > +++ b/drivers/mmc/host/of_mmc_spi.c > @@ -16,9 +16,7 @@ > #include <linux/device.h> > #include <linux/slab.h> > #include <linux/irq.h> > -#include <linux/gpio.h> > #include <linux/of.h> > -#include <linux/of_gpio.h> > #include <linux/of_irq.h> > #include <linux/spi/spi.h> > #include <linux/spi/mmc_spi.h> > @@ -32,15 +30,7 @@ > > MODULE_LICENSE("GPL"); > > -enum { > - CD_GPIO = 0, > - WP_GPIO, > - NUM_GPIOS, > -}; > - > struct of_mmc_spi { > - int gpios[NUM_GPIOS]; > - bool alow_gpios[NUM_GPIOS]; > int detect_irq; > struct mmc_spi_platform_data pdata; > }; > @@ -102,30 +92,6 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct > spi_device *spi) oms->pdata.ocr_mask |= mask; > } > > - for (i = 0; i < ARRAY_SIZE(oms->gpios); i++) { > - enum of_gpio_flags gpio_flags; > - > - oms->gpios[i] = of_get_gpio_flags(np, i, &gpio_flags); > - if (!gpio_is_valid(oms->gpios[i])) > - continue; > - > - if (gpio_flags & OF_GPIO_ACTIVE_LOW) > - oms->alow_gpios[i] = true; > - } > - > - if (gpio_is_valid(oms->gpios[CD_GPIO])) { > - oms->pdata.cd_gpio = oms->gpios[CD_GPIO]; > - oms->pdata.flags |= MMC_SPI_USE_CD_GPIO; > - if (!oms->alow_gpios[CD_GPIO]) > - oms->pdata.caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; > - } > - if (gpio_is_valid(oms->gpios[WP_GPIO])) { > - oms->pdata.ro_gpio = oms->gpios[WP_GPIO]; > - oms->pdata.flags |= MMC_SPI_USE_RO_GPIO; > - if (!oms->alow_gpios[WP_GPIO]) > - oms->pdata.caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; > - } > - > oms->detect_irq = irq_of_parse_and_map(np, 0); > if (oms->detect_irq != 0) { > oms->pdata.init = of_mmc_spi_init; > diff --git a/include/linux/spi/mmc_spi.h b/include/linux/spi/mmc_spi.h > index bfde741a543d..778ae8eb1f3e 100644 > --- a/include/linux/spi/mmc_spi.h > +++ b/include/linux/spi/mmc_spi.h > @@ -8,11 +8,6 @@ > struct device; > struct mmc_host; > > -#define MMC_SPI_USE_CD_GPIO (1 << 0) > -#define MMC_SPI_USE_RO_GPIO (1 << 1) > -#define MMC_SPI_CD_GPIO_ACTIVE_LOW (1 << 2) > -#define MMC_SPI_RO_GPIO_ACTIVE_LOW (1 << 3) > - > /* Put this in platform_data of a device being used to manage an MMC/SD > * card slot. (Modeled after PXA mmc glue; see that for usage examples.) > * > @@ -27,16 +22,6 @@ struct mmc_spi_platform_data { > void *); > void (*exit)(struct device *, void *); > > - /* > - * Card Detect and Read Only GPIOs. To enable debouncing on the card > - * detect GPIO, set the cd_debounce to the debounce time in > - * microseconds. > - */ > - unsigned int flags; > - unsigned int cd_gpio; > - unsigned int cd_debounce; > - unsigned int ro_gpio; > - > /* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */ > unsigned long caps; > unsigned long caps2; -- Regards, Laurent Pinchart
On Mon, Nov 26, 2018 at 9:39 AM Laurent Pinchart <laurent.pinchart@ideasonboard.com> wrote: > On Monday, 26 November 2018 00:52:07 EET Linus Walleij wrote: > It would be nice to update the mmc-spi-slot bindings to use cd-gpios and wp- > gpios (of course keeping backward compatibility on the driver side). Yeah it'd be nice, however I am just dry-coding this right now. I had a Sim.One board before but it broke, I am talking to the vendor trying to get a new one. I think I need some hardware for deeper semantic changes. > > + status = mmc_gpiod_request_cd(mmc, NULL, 0, false, 1, NULL); > > As for patch 02/11, shouldn't the override argument be set to true ? (...) > > + status = mmc_gpiod_request_ro(mmc, NULL, 1, false, 0, NULL); > > Same here. OK > Apart from that, > > Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Thanks! > Please note that I don't have any of the boards above, so I haven't been able > to test the changes. Hm none of the maintainers seems to be using the Ecovec board... Yours, Linus Walleij
Hi Linus, On Tuesday, 27 November 2018 22:34:11 EET Linus Walleij wrote: > On Mon, Nov 26, 2018 at 9:39 AM Laurent Pinchart wrote: > > On Monday, 26 November 2018 00:52:07 EET Linus Walleij wrote: > > > > It would be nice to update the mmc-spi-slot bindings to use cd-gpios and > > wp- gpios (of course keeping backward compatibility on the driver side). > > Yeah it'd be nice, however I am just dry-coding this right > now. I had a Sim.One board before but it broke, I am talking > to the vendor trying to get a new one. > > I think I need some hardware for deeper semantic changes. > > >> + status = mmc_gpiod_request_cd(mmc, NULL, 0, false, 1, NULL); > > > > As for patch 02/11, shouldn't the override argument be set to true ? > > (...) > > >> + status = mmc_gpiod_request_ro(mmc, NULL, 1, false, 0, NULL); > > > > Same here. > > OK > > > Apart from that, > > > > Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > > Thanks! > > > Please note that I don't have any of the boards above, so I haven't been > > able to test the changes. > > Hm none of the maintainers seems to be using the Ecovec board... Where am I listed as an Ecovec maintainer ? :-) -- Regards, Laurent Pinchart
On Mon, Nov 26, 2018 at 9:39 AM Laurent Pinchart <laurent.pinchart@ideasonboard.com> wrote: > > + status = mmc_gpiod_request_cd(mmc, NULL, 0, false, 1, NULL); > > As for patch 02/11, shouldn't the override argument be set to true ? (...) > > + status = mmc_gpiod_request_ro(mmc, NULL, 1, false, 0, NULL); > > Same here. Oh after looking, actually not. Since I also fix up all the descriptors in this patch to actually indicate the right polarity, we do not need to override it, the setting in the descriptor is correct. Yours, Linus Walleij
Hi Linus, On Friday, 30 November 2018 17:35:50 EET Linus Walleij wrote: > On Mon, Nov 26, 2018 at 9:39 AM Laurent Pinchart wrote: > > > + status = mmc_gpiod_request_cd(mmc, NULL, 0, false, 1, NULL); > > > > As for patch 02/11, shouldn't the override argument be set to true ? > > (...) > > > > + status = mmc_gpiod_request_ro(mmc, NULL, 1, false, 0, NULL); > > > > Same here. > > Oh after looking, actually not. > > Since I also fix up all the descriptors in this patch to actually indicate > the right polarity, we do not need to override it, the setting in the > descriptor is correct. Could you then change the commit message to reflect that ? Apart from that the patch looks fine to me. -- Regards, Laurent Pinchart
On Fri, Nov 30, 2018 at 5:25 PM Laurent Pinchart <laurent.pinchart@ideasonboard.com> wrote: > On Friday, 30 November 2018 17:35:50 EET Linus Walleij wrote: > > On Mon, Nov 26, 2018 at 9:39 AM Laurent Pinchart wrote: > > > > + status = mmc_gpiod_request_cd(mmc, NULL, 0, false, 1, NULL); > > > > > > As for patch 02/11, shouldn't the override argument be set to true ? > > > > (...) > > > > > > + status = mmc_gpiod_request_ro(mmc, NULL, 1, false, 0, NULL); > > > > > > Same here. > > > > Oh after looking, actually not. > > > > Since I also fix up all the descriptors in this patch to actually indicate > > the right polarity, we do not need to override it, the setting in the > > descriptor is correct. > > Could you then change the commit message to reflect that ? Apart from that the > patch looks fine to me. Of course. I already did, sorry for the confusion. Yours, Linus Walleij
diff --git a/arch/arm/mach-ep93xx/simone.c b/arch/arm/mach-ep93xx/simone.c index 41aa57581356..80ccb984d521 100644 --- a/arch/arm/mach-ep93xx/simone.c +++ b/arch/arm/mach-ep93xx/simone.c @@ -25,6 +25,7 @@ #include <linux/platform_data/video-ep93xx.h> #include <linux/platform_data/spi-ep93xx.h> #include <linux/gpio.h> +#include <linux/gpio/machine.h> #include <mach/hardware.h> #include <mach/gpio-ep93xx.h> @@ -45,9 +46,15 @@ static struct ep93xxfb_mach_info __initdata simone_fb_info = { static struct mmc_spi_platform_data simone_mmc_spi_data = { .detect_delay = 500, .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, - .flags = MMC_SPI_USE_CD_GPIO, - .cd_gpio = EP93XX_GPIO_LINE_EGPIO0, - .cd_debounce = 1, +}; + +static struct gpiod_lookup_table simone_mmc_spi_gpio_table = { + .dev_id = "mmc_spi.0", /* "mmc_spi" @ CS0 */ + .table = { + /* Card detect */ + GPIO_LOOKUP_IDX("A", 0, NULL, 0, GPIO_ACTIVE_LOW), + { }, + }, }; static struct spi_board_info simone_spi_devices[] __initdata = { @@ -105,6 +112,7 @@ static void __init simone_init_machine(void) ep93xx_register_fb(&simone_fb_info); ep93xx_register_i2c(simone_i2c_board_info, ARRAY_SIZE(simone_i2c_board_info)); + gpiod_add_lookup_table(&simone_mmc_spi_gpio_table); ep93xx_register_spi(&simone_spi_info, simone_spi_devices, ARRAY_SIZE(simone_spi_devices)); simone_register_audio(); diff --git a/arch/arm/mach-ep93xx/vision_ep9307.c b/arch/arm/mach-ep93xx/vision_ep9307.c index 5a0b6187990a..767ee64628dc 100644 --- a/arch/arm/mach-ep93xx/vision_ep9307.c +++ b/arch/arm/mach-ep93xx/vision_ep9307.c @@ -18,6 +18,7 @@ #include <linux/platform_device.h> #include <linux/irq.h> #include <linux/gpio.h> +#include <linux/gpio/machine.h> #include <linux/fb.h> #include <linux/io.h> #include <linux/mtd/partitions.h> @@ -202,13 +203,20 @@ static struct mmc_spi_platform_data vision_spi_mmc_data = { .detect_delay = 100, .powerup_msecs = 100, .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, - .flags = MMC_SPI_USE_CD_GPIO | MMC_SPI_USE_RO_GPIO, - .cd_gpio = EP93XX_GPIO_LINE_EGPIO15, - .cd_debounce = 1, - .ro_gpio = EP93XX_GPIO_LINE_F(0), .caps2 = MMC_CAP2_RO_ACTIVE_HIGH, }; +static struct gpiod_lookup_table vision_spi_mmc_gpio_table = { + .dev_id = "mmc_spi.2", /* "mmc_spi @ CS2 */ + .table = { + /* Card detect */ + GPIO_LOOKUP_IDX("B", 7, NULL, 0, GPIO_ACTIVE_LOW), + /* Write protect */ + GPIO_LOOKUP_IDX("F", 0, NULL, 1, GPIO_ACTIVE_HIGH), + { }, + }, +}; + /************************************************************************* * SPI Bus *************************************************************************/ @@ -286,6 +294,7 @@ static void __init vision_init_machine(void) ep93xx_register_i2c(vision_i2c_info, ARRAY_SIZE(vision_i2c_info)); + gpiod_add_lookup_table(&vision_spi_mmc_gpio_table); ep93xx_register_spi(&vision_spi_master, vision_spi_board_info, ARRAY_SIZE(vision_spi_board_info)); vision_register_i2s(); diff --git a/arch/sh/boards/mach-ecovec24/setup.c b/arch/sh/boards/mach-ecovec24/setup.c index 06a894526a0b..3097307b7cb7 100644 --- a/arch/sh/boards/mach-ecovec24/setup.c +++ b/arch/sh/boards/mach-ecovec24/setup.c @@ -776,9 +776,19 @@ static struct mmc_spi_platform_data mmc_spi_info = { .caps2 = MMC_CAP2_RO_ACTIVE_HIGH, .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* 3.3V only */ .setpower = mmc_spi_setpower, - .flags = MMC_SPI_USE_CD_GPIO | MMC_SPI_USE_RO_GPIO, - .cd_gpio = GPIO_PTY7, - .ro_gpio = GPIO_PTY6, +}; + +static struct gpiod_lookup_table mmc_spi_gpio_table = { + .dev_id = "mmc_spi.0", /* device "mmc_spi" @ CS0 */ + .table = { + /* Card detect */ + GPIO_LOOKUP_IDX("sh7724_pfc", GPIO_PTY7, NULL, 0, + GPIO_ACTIVE_LOW), + /* Write protect */ + GPIO_LOOKUP_IDX("sh7724_pfc", GPIO_PTY6, NULL, 1, + GPIO_ACTIVE_HIGH), + { }, + }, }; static struct spi_board_info spi_bus[] = { @@ -1282,6 +1292,7 @@ static int __init arch_setup(void) gpio_request(GPIO_PTB6, NULL); /* 3.3V power control */ gpio_direction_output(GPIO_PTB6, 0); /* disable power by default */ + gpiod_add_lookup_table(&mmc_spi_gpio_table); spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus)); #endif diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index 476e53d30128..10ba46b728e8 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1434,13 +1434,16 @@ static int mmc_spi_probe(struct spi_device *spi) if (status != 0) goto fail_add_host; - if (host->pdata && host->pdata->flags & MMC_SPI_USE_CD_GPIO) { - status = mmc_gpio_request_cd(mmc, host->pdata->cd_gpio, - host->pdata->cd_debounce); - if (status != 0) - goto fail_add_host; - - /* The platform has a CD GPIO signal that may support + /* + * Index 0 is card detect + * Old boardfiles were specifying 1 ms as debounce + */ + status = mmc_gpiod_request_cd(mmc, NULL, 0, false, 1, NULL); + if (status == -EPROBE_DEFER) + goto fail_add_host; + if (!status) { + /* + * The platform has a CD GPIO signal that may support * interrupts, so let mmc_gpiod_request_cd_irq() decide * if polling is needed or not. */ @@ -1448,12 +1451,12 @@ static int mmc_spi_probe(struct spi_device *spi) mmc_gpiod_request_cd_irq(mmc); } - if (host->pdata && host->pdata->flags & MMC_SPI_USE_RO_GPIO) { + /* Index 1 is write protect/read only */ + status = mmc_gpiod_request_ro(mmc, NULL, 1, false, 0, NULL); + if (status == -EPROBE_DEFER) + goto fail_add_host; + if (!status) has_ro = true; - status = mmc_gpio_request_ro(mmc, host->pdata->ro_gpio); - if (status != 0) - goto fail_add_host; - } dev_info(&spi->dev, "SD/MMC host %s%s%s%s%s\n", dev_name(&mmc->class_dev), diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c index c9eed8436b6b..b294b221f225 100644 --- a/drivers/mmc/host/of_mmc_spi.c +++ b/drivers/mmc/host/of_mmc_spi.c @@ -16,9 +16,7 @@ #include <linux/device.h> #include <linux/slab.h> #include <linux/irq.h> -#include <linux/gpio.h> #include <linux/of.h> -#include <linux/of_gpio.h> #include <linux/of_irq.h> #include <linux/spi/spi.h> #include <linux/spi/mmc_spi.h> @@ -32,15 +30,7 @@ MODULE_LICENSE("GPL"); -enum { - CD_GPIO = 0, - WP_GPIO, - NUM_GPIOS, -}; - struct of_mmc_spi { - int gpios[NUM_GPIOS]; - bool alow_gpios[NUM_GPIOS]; int detect_irq; struct mmc_spi_platform_data pdata; }; @@ -102,30 +92,6 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi) oms->pdata.ocr_mask |= mask; } - for (i = 0; i < ARRAY_SIZE(oms->gpios); i++) { - enum of_gpio_flags gpio_flags; - - oms->gpios[i] = of_get_gpio_flags(np, i, &gpio_flags); - if (!gpio_is_valid(oms->gpios[i])) - continue; - - if (gpio_flags & OF_GPIO_ACTIVE_LOW) - oms->alow_gpios[i] = true; - } - - if (gpio_is_valid(oms->gpios[CD_GPIO])) { - oms->pdata.cd_gpio = oms->gpios[CD_GPIO]; - oms->pdata.flags |= MMC_SPI_USE_CD_GPIO; - if (!oms->alow_gpios[CD_GPIO]) - oms->pdata.caps2 |= MMC_CAP2_CD_ACTIVE_HIGH; - } - if (gpio_is_valid(oms->gpios[WP_GPIO])) { - oms->pdata.ro_gpio = oms->gpios[WP_GPIO]; - oms->pdata.flags |= MMC_SPI_USE_RO_GPIO; - if (!oms->alow_gpios[WP_GPIO]) - oms->pdata.caps2 |= MMC_CAP2_RO_ACTIVE_HIGH; - } - oms->detect_irq = irq_of_parse_and_map(np, 0); if (oms->detect_irq != 0) { oms->pdata.init = of_mmc_spi_init; diff --git a/include/linux/spi/mmc_spi.h b/include/linux/spi/mmc_spi.h index bfde741a543d..778ae8eb1f3e 100644 --- a/include/linux/spi/mmc_spi.h +++ b/include/linux/spi/mmc_spi.h @@ -8,11 +8,6 @@ struct device; struct mmc_host; -#define MMC_SPI_USE_CD_GPIO (1 << 0) -#define MMC_SPI_USE_RO_GPIO (1 << 1) -#define MMC_SPI_CD_GPIO_ACTIVE_LOW (1 << 2) -#define MMC_SPI_RO_GPIO_ACTIVE_LOW (1 << 3) - /* Put this in platform_data of a device being used to manage an MMC/SD * card slot. (Modeled after PXA mmc glue; see that for usage examples.) * @@ -27,16 +22,6 @@ struct mmc_spi_platform_data { void *); void (*exit)(struct device *, void *); - /* - * Card Detect and Read Only GPIOs. To enable debouncing on the card - * detect GPIO, set the cd_debounce to the debounce time in - * microseconds. - */ - unsigned int flags; - unsigned int cd_gpio; - unsigned int cd_debounce; - unsigned int ro_gpio; - /* Capabilities to pass into mmc core (e.g. MMC_CAP_NEEDS_POLL). */ unsigned long caps; unsigned long caps2;
Switch the SPI MMC driver to use GPIO descriptors internally and just look those up using the standard slot GPIO functions mmc_gpiod_request_cd() and mmc_gpiod_request_ro(). Make sure to request index 0 and 1 in accordance with the SPI MMC DT binding, and add the same GPIOs in machine descriptor tables on all boards that use SPI MMC in board files. The lines are flagged as GPIO_ACTIVE_[LOW|HIGH] as that is what they are, but this will be ignored by the MMC slot GPIO code that uses the *raw accessors and rely on the caps2 flags MMC_CAP2_CD_ACTIVE_HIGH and MMC_CAP2_RO_ACTIVE_HIGH for polarity inversion semantics as of now. Cc: Hartley Sweeten <hsweeten@visionengravers.com> # Vision EP9307 Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- ChangeLog v1->v3: - Resending on top of the applied patches. - Hartley: it'd be great if you could test this series on the Vision EP9307. - Kuninori/Laurent: hope one of you has this Ecovec board so you can test it too. --- arch/arm/mach-ep93xx/simone.c | 14 +++++++++--- arch/arm/mach-ep93xx/vision_ep9307.c | 17 ++++++++++---- arch/sh/boards/mach-ecovec24/setup.c | 17 +++++++++++--- drivers/mmc/host/mmc_spi.c | 27 ++++++++++++---------- drivers/mmc/host/of_mmc_spi.c | 34 ---------------------------- include/linux/spi/mmc_spi.h | 15 ------------ 6 files changed, 53 insertions(+), 71 deletions(-) -- 2.19.1