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e1b2dc70cd
The BCM2835 GPIO module is a combined GPIO controller, (GPIO) interrupt controller, and pinmux/control device. Original driver by Simon Arlott. Rewrite including GPIO chip device by Chris Boot. Upstreaming changes by Stephen Warren: * Wrote DT binding documentation. * Changed brcm,function to an integer to more directly match the datasheet, and to match brcm,pins being an integer. * Implemented pull-up/down pin config. * Removed read-only DT property and related code. The restriction this implemented are driven by the board, not the GPIO HW block, so don't really make sense of a HW block binding, were in general incomplete (since they could only know about the few pins hard-coded into the Raspberry Pi B board design and not the uncommitted GPIOS), and are better represented simply by not writing incorrect data into pin configuration nodes. * Don't set GPIO_IN function select in gpio_request_enable() to avoid glitches; defer this to gpio_set_direction(). Consequently, removed empty bcm2835_pmx_gpio_request_enable(). * Simplified enabled_irq_map[]; make it explicitly 1 entry per bank. * Lifted use of enabled_irq_map[] outside the per-interrupt loop in IRQ handler, thus fixing an issue where the code was indexing into enabled_irq_map[] by intra-bank GPIO ID, not global GPIO ID. * Removed locking in IRQ handler, since all other code uses spin_lock_irqsave() and so guarantees it doesn't run concurrently with the handler. * Moved duplicated BUILD_BUG_ON()s into probe(). Also check size of bcm2835_gpio_pins[]. * Remove range-checking from bcm2835_pctl_get_groups_count() since we've decided to trust the pinctrl core. * Made bcm2835_pmx_gpio_disable_free() call bcm2835_pinctrl_fsel_set() directly for simplicity. * Fixed body of dt_free_map() to match latest dt_node_to_map(). * Removed GPIO ownership check from bcm2835_pmx_enable() since the pinctrl core owns doing this. * Made irq_chip and pinctrl_gpio_range .name == MODULE_NAME so it's more descriptive. * Simplified remove(); removed call to non-existent pinctrl_remove_gpio_range(), remove early return on error. * Don't force gpiochip's base to 0. Set gpio_range.base to gpiochip's base GPIO number. * Error-handling cleanups in probe(). * Switched to module_platform_driver() rather than open-coding. * Made pin, group, and function names lower-case. * s/broadcom/brcm/ in DT property names. * s/2708/2835/. * Fixed a couple minor checkpatch warnings, and other minor cleanup. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: Chris Boot <bootc@bootc.net> Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
38 lines
1.5 KiB
Makefile
38 lines
1.5 KiB
Makefile
# generic pinmux support
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ccflags-$(CONFIG_DEBUG_PINCTRL) += -DDEBUG
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obj-$(CONFIG_PINCTRL) += core.o
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obj-$(CONFIG_PINMUX) += pinmux.o
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obj-$(CONFIG_PINCONF) += pinconf.o
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ifeq ($(CONFIG_OF),y)
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obj-$(CONFIG_PINCTRL) += devicetree.o
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endif
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obj-$(CONFIG_GENERIC_PINCONF) += pinconf-generic.o
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obj-$(CONFIG_PINCTRL_BCM2835) += pinctrl-bcm2835.o
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obj-$(CONFIG_PINCTRL_IMX) += pinctrl-imx.o
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obj-$(CONFIG_PINCTRL_IMX35) += pinctrl-imx35.o
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obj-$(CONFIG_PINCTRL_IMX51) += pinctrl-imx51.o
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obj-$(CONFIG_PINCTRL_IMX53) += pinctrl-imx53.o
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obj-$(CONFIG_PINCTRL_IMX6Q) += pinctrl-imx6q.o
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obj-$(CONFIG_PINCTRL_PXA3xx) += pinctrl-pxa3xx.o
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obj-$(CONFIG_PINCTRL_MMP2) += pinctrl-mmp2.o
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obj-$(CONFIG_PINCTRL_MXS) += pinctrl-mxs.o
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obj-$(CONFIG_PINCTRL_IMX23) += pinctrl-imx23.o
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obj-$(CONFIG_PINCTRL_IMX28) += pinctrl-imx28.o
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obj-$(CONFIG_PINCTRL_NOMADIK) += pinctrl-nomadik.o
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obj-$(CONFIG_PINCTRL_STN8815) += pinctrl-nomadik-stn8815.o
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obj-$(CONFIG_PINCTRL_DB8500) += pinctrl-nomadik-db8500.o
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obj-$(CONFIG_PINCTRL_DB8540) += pinctrl-nomadik-db8540.o
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obj-$(CONFIG_PINCTRL_PXA168) += pinctrl-pxa168.o
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obj-$(CONFIG_PINCTRL_PXA910) += pinctrl-pxa910.o
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obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o
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obj-$(CONFIG_PINCTRL_SIRF) += pinctrl-sirf.o
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obj-$(CONFIG_PINCTRL_TEGRA) += pinctrl-tegra.o
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obj-$(CONFIG_PINCTRL_TEGRA20) += pinctrl-tegra20.o
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obj-$(CONFIG_PINCTRL_TEGRA30) += pinctrl-tegra30.o
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obj-$(CONFIG_PINCTRL_U300) += pinctrl-u300.o
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obj-$(CONFIG_PINCTRL_COH901) += pinctrl-coh901.o
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obj-$(CONFIG_PLAT_SPEAR) += spear/
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