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ec85e48a11
On MikroTik RB91x board series a reset key shares SoC gpio line #15 with NAND ALE and NAND IO7. So we need a custom gpio driver to manage this non-trivial connection schema. Also rb91x-nand needs to have an ability to disable a polling of the key while it works with NAND. While we've been integrating rb91x-key into a firmware, we've figured out that: * In the gpio-latch driver we need to add a "cansleep" suffix to several gpiolib calls, * When gpio-latch and rb91x-nand fail to get a gpio and an error is -EPROBE_DEFER, they shouldn't report about this, since this actually is not an error and occurs when the gpio-latch probe function is called before the rb91x-key probe. We fix these related things here too. Signed-off-by: Denis Kalashnikov <denis281089@gmail.com> Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Tested-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
69 lines
2.4 KiB
Diff
69 lines
2.4 KiB
Diff
--- a/drivers/gpio/Kconfig
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+++ b/drivers/gpio/Kconfig
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@@ -341,6 +341,13 @@ config GPIO_IXP4XX
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IXP4xx series of chips.
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If unsure, say N.
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+
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+config GPIO_LATCH
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+ tristate "MikroTik RouterBOARD GPIO latch support"
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+ depends on ATH79
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+ help
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+ GPIO driver for latch on some MikroTik RouterBOARDs.
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+
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config GPIO_LOGICVC
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tristate "Xylon LogiCVC GPIO support"
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depends on MFD_SYSCON && OF
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@@ -495,6 +502,10 @@ config GPIO_REG
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A 32-bit single register GPIO fixed in/out implementation. This
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can be used to represent any register as a set of GPIO signals.
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+config GPIO_RB91X_KEY
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+ tristate "MikroTik RB91x board series reset key support"
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+ depends on ATH79
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+
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config GPIO_SAMA5D2_PIOBU
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tristate "SAMA5D2 PIOBU GPIO support"
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depends on MFD_SYSCON
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--- a/drivers/gpio/Makefile
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+++ b/drivers/gpio/Makefile
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@@ -72,6 +72,7 @@ obj-$(CONFIG_GPIO_IT87) += gpio-it87.o
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obj-$(CONFIG_GPIO_IXP4XX) += gpio-ixp4xx.o
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obj-$(CONFIG_GPIO_JANZ_TTL) += gpio-janz-ttl.o
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obj-$(CONFIG_GPIO_KEMPLD) += gpio-kempld.o
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+obj-$(CONFIG_GPIO_LATCH) += gpio-latch.o
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obj-$(CONFIG_GPIO_LOGICVC) += gpio-logicvc.o
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obj-$(CONFIG_GPIO_LOONGSON1) += gpio-loongson1.o
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obj-$(CONFIG_GPIO_LOONGSON) += gpio-loongson.o
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@@ -121,6 +122,7 @@ obj-$(CONFIG_GPIO_PMIC_EIC_SPRD) += gpio
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obj-$(CONFIG_GPIO_PXA) += gpio-pxa.o
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obj-$(CONFIG_GPIO_RASPBERRYPI_EXP) += gpio-raspberrypi-exp.o
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obj-$(CONFIG_GPIO_RB4XX) += gpio-rb4xx.o
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+obj-$(CONFIG_GPIO_RB91X_KEY) += gpio-rb91x-key.o
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obj-$(CONFIG_GPIO_RC5T583) += gpio-rc5t583.o
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obj-$(CONFIG_GPIO_RCAR) += gpio-rcar.o
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obj-$(CONFIG_GPIO_RDA) += gpio-rda.o
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--- a/drivers/mtd/nand/raw/Kconfig
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+++ b/drivers/mtd/nand/raw/Kconfig
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@@ -571,4 +571,10 @@ config MTD_NAND_RB4XX
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Enables support for the NAND flash chip on Mikrotik Routerboard
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RB4xx series.
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+config MTD_NAND_RB91X
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+ tristate "MikroTik RB91x NAND driver support"
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+ depends on ATH79 && MTD_RAW_NAND
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+ help
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+ Enables support for the NAND flash chip on MikroTik RB91x series.
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+
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endif # MTD_RAW_NAND
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--- a/drivers/mtd/nand/raw/Makefile
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+++ b/drivers/mtd/nand/raw/Makefile
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@@ -60,6 +60,7 @@ obj-$(CONFIG_MTD_NAND_CADENCE) += caden
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obj-$(CONFIG_MTD_NAND_ARASAN) += arasan-nand-controller.o
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obj-$(CONFIG_MTD_NAND_AR934X) += ar934x_nand.o
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obj-$(CONFIG_MTD_NAND_RB4XX) += nand_rb4xx.o
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+obj-$(CONFIG_MTD_NAND_RB91X) += rb91x_nand.o
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nand-objs := nand_base.o nand_legacy.o nand_bbt.o nand_timings.o nand_ids.o
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nand-objs += nand_onfi.o
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