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3e6cee1786
The pin control registers can have interrupts for example for device wake-up. These interrupts can be treated as a chained interrupt controller as suggested earlier by Linus Walleij <linus.walleij@linaro.org>. This patch adds support for interrupts in a way that should be pretty generic, and works for the omaps that support wake-up interrupts. On omaps, there's an interrupt enable and interrupt status bit for each pin. The two pinctrl domains on omaps share a single interrupt from the PRM chained interrupt handler. Support for other similar hardware should be easy to add. Note that this patch does not attempt to handle the wake-up interrupts automatically unlike the earlier patches. This patch allows the device drivers to do a request_irq() on the wake-up pins as needed. I'll try to do also a separate generic patch for handling the wake-up events automatically. Also note that as this patch makes the pinctrl-single an irq controller, the current bindings need some extra trickery to use interrupts from two different interrupt controllers for the same driver. So it might be worth waiting a little on the patches enabling the wake-up interrupts from drivers as there should be a generic way to handle it coming. And also there's been discussion of interrupts-extended binding for using interrupts from multiple interrupt controllers. In any case, this patch should be ready to go allowing handling the wake-up interrupts in a generic way, or separately from the device drivers. Cc: Peter Ujfalusi <peter.ujfalusi@ti.com> Cc: Grygorii Strashko <grygorii.strashko@ti.com> Cc: Prakash Manjunathappa <prakash.pm@ti.com> Cc: Roger Quadros <rogerq@ti.com> Cc: linux-kernel@vger.kernel.org Cc: Benoît Cousson <bcousson@baylibre.com> Cc: devicetree@vger.kernel.org Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com> Reviewed-by: Kevin Hilman <khilman@linaro.org> Tested-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Tony Lindgren <tony@atomide.com> |
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| .. | ||
| allwinner,sunxi-pinctrl.txt | ||
| atmel,at91-pinctrl.txt | ||
| brcm,bcm2835-gpio.txt | ||
| fsl,imx6dl-pinctrl.txt | ||
| fsl,imx6q-pinctrl.txt | ||
| fsl,imx6sl-pinctrl.txt | ||
| fsl,imx35-pinctrl.txt | ||
| fsl,imx51-pinctrl.txt | ||
| fsl,imx53-pinctrl.txt | ||
| fsl,imx-pinctrl.txt | ||
| fsl,mxs-pinctrl.txt | ||
| fsl,vf610-pinctrl.txt | ||
| img,tz1090-pdc-pinctrl.txt | ||
| img,tz1090-pinctrl.txt | ||
| lantiq,falcon-pinumx.txt | ||
| lantiq,xway-pinumx.txt | ||
| marvell,armada-370-pinctrl.txt | ||
| marvell,armada-xp-pinctrl.txt | ||
| marvell,dove-pinctrl.txt | ||
| marvell,kirkwood-pinctrl.txt | ||
| marvell,mvebu-pinctrl.txt | ||
| nvidia,tegra20-pinmux.txt | ||
| nvidia,tegra30-pinmux.txt | ||
| nvidia,tegra114-pinmux.txt | ||
| pinctrl_spear.txt | ||
| pinctrl-bindings.txt | ||
| pinctrl-palmas.txt | ||
| pinctrl-single.txt | ||
| pinctrl-sirf.txt | ||
| pinctrl-st.txt | ||
| pinctrl-vt8500.txt | ||
| renesas,pfc-pinctrl.txt | ||
| rockchip,pinctrl.txt | ||
| samsung-pinctrl.txt | ||
| ste,abx500.txt | ||
| ste,nomadik.txt | ||