mux: mmio: add generic regmap bitfield-based multiplexer (8ecfaca7) · Commits · 戴 / test

drivers/mux/Kconfig

+6 −6

Original line number	Diff line number	Diff line
		@@ -46,14 +46,14 @@ config MUX_GPIO
		be called mux-gpio.

		config MUX_MMIO
		tristate "MMIO register bitfield-controlled Multiplexer"
		depends on (OF && MFD_SYSCON) \|\| COMPILE_TEST
		tristate "MMIO/Regmap register bitfield-controlled Multiplexer"
		depends on OF \|\| COMPILE_TEST
		help
		MMIO register bitfield-controlled Multiplexer controller.
		MMIO/Regmap register bitfield-controlled Multiplexer controller.

		The driver builds multiplexer controllers for bitfields in a syscon
		register. For N bit wide bitfields, there will be 2^N possible
		multiplexer states.
		The driver builds multiplexer controllers for bitfields in either
		a syscon register or a driver regmap register. For N bit wide
		bitfields, there will be 2^N possible multiplexer states.

		To compile the driver as a module, choose M here: the module will
		be called mux-mmio.

+5 −1

Original line number	Diff line number	Diff line
		@@ -28,6 +28,7 @@ static const struct mux_control_ops mux_mmio_ops = {

		static const struct of_device_id mux_mmio_dt_ids[] = {
		{ .compatible = "mmio-mux", },
		{ .compatible = "reg-mux", },
		{ /* sentinel */ }
		};
		MODULE_DEVICE_TABLE(of, mux_mmio_dt_ids);
		@@ -43,7 +44,10 @@ static int mux_mmio_probe(struct platform_device *pdev)
		int ret;
		int i;

		if (of_device_is_compatible(np, "mmio-mux"))
		regmap = syscon_node_to_regmap(np->parent);
		else
		regmap = dev_get_regmap(dev->parent, NULL) ?: ERR_PTR(-ENODEV);
		if (IS_ERR(regmap)) {
		ret = PTR_ERR(regmap);
		dev_err(dev, "failed to get regmap: %d\n", ret);