drivers/reset/reset-ti-syscon.c

3  * TI SYSCON regmap reset driver
15 #include <linux/reset-controller.h>
17 #include <dt-bindings/reset/ti-syscon.h>
20  * struct ti_syscon_reset_control - reset control structure
21  * @assert_offset: reset assert control register offset from syscon base
22  * @assert_bit: reset assert bit in the reset assert control register
23  * @deassert_offset: reset deassert control register offset from syscon base
24  * @deassert_bit: reset deassert bit in the reset deassert control register
25  * @status_offset: reset status register offset from syscon base
26  * @status_bit: reset status bit in the reset status register
27  * @flags: reset flag indicating how the (de)assert and status are handled
40  * struct ti_syscon_reset_data - reset controller information structure
41  * @rcdev: reset controller entity
42  * @regmap: regmap handle containing the memory-mapped reset registers
43  * @controls: array of reset controls
57  * ti_syscon_reset_assert() - assert device reset
58  * @rcdev: reset controller entity
59  * @id: ID of the reset to be asserted
61  * This function implements the reset driver op to assert a device's reset.
62  * This asserts the reset in a manner prescribed by the reset flags.
79 		return -ENOTSUPP; /* assert not supported for this reset */  in ti_syscon_reset_assert()
88  * ti_syscon_reset_deassert() - deassert device reset
89  * @rcdev: reset controller entity
90  * @id: ID of reset to be deasserted
92  * This function implements the reset driver op to deassert a device's reset.
93  * This deasserts the reset in a manner prescribed by the reset flags.
110 		return -ENOTSUPP; /* deassert not supported for this reset */  in ti_syscon_reset_deassert()
119  * ti_syscon_reset_status() - check device reset status
120  * @rcdev: reset controller entity
121  * @id: ID of the reset for which the status is being requested
123  * This function implements the reset driver op to return the status of a
124  * device's reset.
126  * Return: 0 if reset is deasserted, true if reset is asserted, else a
143 		return -ENOTSUPP; /* status not supported for this reset */  in ti_syscon_reset_status()
177 	list = of_get_property(np, "ti,reset-bits", &size);  in ti_syscon_reset_probe()
179 		dev_err(dev, "invalid DT reset description\n");  in ti_syscon_reset_probe()
211 	{ .compatible = "ti,syscon-reset", },
219 		.name = "ti-syscon-reset",
227 MODULE_DESCRIPTION("TI SYSCON Regmap Reset Driver");