21 #include "prcm-common.h"
26 #include "prm-regbits-44xx.h"
37  * omap_prm_base_init - Populates the prm partitions
78 /* Read-modify-write a register in PRM. Caller must lock */
79 u32 omap4_prminst_rmw_inst_reg_bits(u32 mask, u32 bits, u8 part, s16 inst,  in omap4_prminst_rmw_inst_reg_bits()  argument
85 	v &= ~mask;  in omap4_prminst_rmw_inst_reg_bits()
93  * omap4_prminst_is_hardreset_asserted - read the HW reset line state of
96  * @shift: register bit shift corresponding to the reset line to check
100  * -EINVAL upon parameter error.
115  * omap4_prminst_assert_hardreset - assert the HW reset line of a submodule
117  * @shift: register bit shift corresponding to the reset line to assert
120  * reset line to be asserted / deasserted in order to fully enable the
121  * IP.  These modules may have multiple hard-reset lines that reset
123  * place the submodule into reset.  Returns 0 upon success or -EINVAL
129 	u32 mask = 1 << shift;  in omap4_prminst_assert_hardreset()  local
131 	omap4_prminst_rmw_inst_reg_bits(mask, mask, part, inst, rstctrl_offs);  in omap4_prminst_assert_hardreset()
137  * omap4_prminst_deassert_hardreset - deassert a submodule hardreset line and
139  * @shift: register bit shift corresponding to the reset line to deassert
140  * @st_shift: status bit offset corresponding to the reset line
143  * @rstctrl_offs: reset register offset
144  * @rstst_offs: reset status register offset
147  * reset line to be asserted / deasserted in order to fully enable the
148  * IP.  These modules may have multiple hard-reset lines that reset
150  * take the submodule out of reset and wait until the PRCM indicates
151  * that the reset has completed before returning.  Returns 0 upon success or
152  * -EINVAL upon an argument error, -EEXIST if the submodule was already out
153  * of reset, or -EBUSY if the submodule did not exit reset promptly.
159 	u32 mask = 1 << shift;  in omap4_prminst_deassert_hardreset()  local
162 	/* Check the current status to avoid de-asserting the line twice */  in omap4_prminst_deassert_hardreset()
165 		return -EEXIST;  in omap4_prminst_deassert_hardreset()
167 	/* Clear the reset status by writing 1 to the status bit */  in omap4_prminst_deassert_hardreset()
170 	/* de-assert the reset control line */  in omap4_prminst_deassert_hardreset()
171 	omap4_prminst_rmw_inst_reg_bits(mask, 0, part, inst, rstctrl_offs);  in omap4_prminst_deassert_hardreset()
177 	return (c == MAX_MODULE_HARDRESET_WAIT) ? -EBUSY : 0;  in omap4_prminst_deassert_hardreset()