drivers/reset/reset-ti-syscon.c

2  * TI SYSCON regmap reset driver
23 #include <linux/reset-controller.h>
25 #include <dt-bindings/reset/ti-syscon.h>
28  * struct ti_syscon_reset_control - reset control structure
29  * @assert_offset: reset assert control register offset from syscon base
30  * @assert_bit: reset assert bit in the reset assert control register
31  * @deassert_offset: reset deassert control register offset from syscon base
32  * @deassert_bit: reset deassert bit in the reset deassert control register
33  * @status_offset: reset status register offset from syscon base
34  * @status_bit: reset status bit in the reset status register
35  * @flags: reset flag indicating how the (de)assert and status are handled
48  * struct ti_syscon_reset_data - reset controller information structure
49  * @rcdev: reset controller entity
50  * @regmap: regmap handle containing the memory-mapped reset registers
51  * @controls: array of reset controls
65  * ti_syscon_reset_assert() - assert device reset
66  * @rcdev: reset controller entity
67  * @id: ID of the reset to be asserted
69  * This function implements the reset driver op to assert a device's reset.
70  * This asserts the reset in a manner prescribed by the reset flags.
87 		return -ENOTSUPP; /* assert not supported for this reset */  in ti_syscon_reset_assert()
96  * ti_syscon_reset_deassert() - deassert device reset
97  * @rcdev: reset controller entity
98  * @id: ID of reset to be deasserted
100  * This function implements the reset driver op to deassert a device's reset.
101  * This deasserts the reset in a manner prescribed by the reset flags.
118 		return -ENOTSUPP; /* deassert not supported for this reset */  in ti_syscon_reset_deassert()
127  * ti_syscon_reset_status() - check device reset status
128  * @rcdev: reset controller entity
129  * @id: ID of the reset for which the status is being requested
131  * This function implements the reset driver op to return the status of a
132  * device's reset.
134  * Return: 0 if reset is deasserted, true if reset is asserted, else a
151 		return -ENOTSUPP; /* status not supported for this reset */  in ti_syscon_reset_status()
185 	list = of_get_property(np, "ti,reset-bits", &size);  in ti_syscon_reset_probe()
187 		dev_err(dev, "invalid DT reset description\n");  in ti_syscon_reset_probe()
221 	{ .compatible = "ti,syscon-reset", },
229 		.name = "ti-syscon-reset",
237 MODULE_DESCRIPTION("TI SYSCON Regmap Reset Driver");