4  * Copyright (C) 2011-2012 Texas Instruments Incorporated - https://www.ti.com/
24 #include "prm-regbits-33xx.h"
42 /* Read-modify-write a register in PRM. Caller must lock */
56  * am33xx_prm_is_hardreset_asserted - read the HW reset line state of
63  * Returns 1 if the (sub)module hardreset line is currently asserted,
64  * 0 if the (sub)module hardreset line is not currently asserted, or
65  * -EINVAL upon parameter error.
80  * am33xx_prm_assert_hardreset - assert the HW reset line of a submodule
87  * reset line to be asserted / deasserted in order to fully enable the
88  * IP.  These modules may have multiple hard-reset lines that reset
90  * place the submodule into reset.  Returns 0 upon success or -EINVAL
104  * am33xx_prm_deassert_hardreset - deassert a submodule hardreset line and
114  * reset line to be asserted / deasserted in order to fully enable the
115  * IP.  These modules may have multiple hard-reset lines that reset
119  * -EINVAL upon an argument error, -EEXIST if the submodule was already out
120  * of reset, or -EBUSY if the submodule did not exit reset promptly.
129 	/* Check the current status to avoid  de-asserting the line twice */  in am33xx_prm_deassert_hardreset()
131 		return -EEXIST;  in am33xx_prm_deassert_hardreset()
136 	/* de-assert the reset control line */  in am33xx_prm_deassert_hardreset()
146 	return (c == MAX_MODULE_HARDRESET_WAIT) ? -EBUSY : 0;  in am33xx_prm_deassert_hardreset()
153 				pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);  in am33xx_pwrdm_set_next_pwrst()
161 	v = am33xx_prm_read_reg(pwrdm->prcm_offs,  pwrdm->pwrstctrl_offs);  in am33xx_pwrdm_read_next_pwrst()
172 	v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs);  in am33xx_pwrdm_read_pwrst()
183 				pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);  in am33xx_pwrdm_set_lowpwrstchange()
191 				pwrdm->prcm_offs, pwrdm->pwrstst_offs);  in am33xx_pwrdm_clear_all_prev_pwrst()
199 	m = pwrdm->logicretstate_mask;  in am33xx_pwrdm_set_logic_retst()
201 		return -EINVAL;  in am33xx_pwrdm_set_logic_retst()
204 				pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);  in am33xx_pwrdm_set_logic_retst()
213 	v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs);  in am33xx_pwrdm_read_logic_pwrst()
224 	m = pwrdm->logicretstate_mask;  in am33xx_pwrdm_read_logic_retst()
226 		return -EINVAL;  in am33xx_pwrdm_read_logic_retst()
228 	v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);  in am33xx_pwrdm_read_logic_retst()
240 	m = pwrdm->mem_on_mask[bank];  in am33xx_pwrdm_set_mem_onst()
242 		return -EINVAL;  in am33xx_pwrdm_set_mem_onst()
245 				pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);  in am33xx_pwrdm_set_mem_onst()
255 	m = pwrdm->mem_ret_mask[bank];  in am33xx_pwrdm_set_mem_retst()
257 		return -EINVAL;  in am33xx_pwrdm_set_mem_retst()
260 				pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);  in am33xx_pwrdm_set_mem_retst()
269 	m = pwrdm->mem_pwrst_mask[bank];  in am33xx_pwrdm_read_mem_pwrst()
271 		return -EINVAL;  in am33xx_pwrdm_read_mem_pwrst()
273 	v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs);  in am33xx_pwrdm_read_mem_pwrst()
284 	m = pwrdm->mem_retst_mask[bank];  in am33xx_pwrdm_read_mem_retst()
286 		return -EINVAL;  in am33xx_pwrdm_read_mem_retst()
288 	v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);  in am33xx_pwrdm_read_mem_retst()
301 	 * via a callback and a periodic timer check -- how long do we expect  in am33xx_pwrdm_wait_transition()
306 	while ((am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs)  in am33xx_pwrdm_wait_transition()
313 		       pwrdm->name);  in am33xx_pwrdm_wait_transition()
314 		return -EAGAIN;  in am33xx_pwrdm_wait_transition()
329  * am33xx_prm_global_warm_sw_reset - reboot the device via warm reset
347 	pwrdm->context = am33xx_prm_read_reg(pwrdm->prcm_offs,  in am33xx_pwrdm_save_context()
348 						pwrdm->pwrstctrl_offs);  in am33xx_pwrdm_save_context()
353 	pwrdm->context &= ~AM33XX_LOWPOWERSTATECHANGE_MASK;  in am33xx_pwrdm_save_context()
360 	st = am33xx_prm_read_reg(pwrdm->prcm_offs,  in am33xx_pwrdm_restore_context()
361 				 pwrdm->pwrstst_offs);  in am33xx_pwrdm_restore_context()
363 	am33xx_prm_write_reg(pwrdm->context, pwrdm->prcm_offs,  in am33xx_pwrdm_restore_context()
364 			     pwrdm->pwrstctrl_offs);  in am33xx_pwrdm_restore_context()
368 	ctrl = OMAP_POWERSTATEST_MASK & pwrdm->context;  in am33xx_pwrdm_restore_context()