| /* |
| * OMAP4 powerdomain control |
| * |
| * Copyright (C) 2009-2010 Texas Instruments, Inc. |
| * Copyright (C) 2007-2009 Nokia Corporation |
| * |
| * Derived from mach-omap2/powerdomain.c written by Paul Walmsley |
| * Rajendra Nayak <rnayak@ti.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/io.h> |
| #include <linux/errno.h> |
| #include <linux/delay.h> |
| #include <plat/powerdomain.h> |
| #include <plat/prcm.h> |
| #include "prm.h" |
| #include "prm-regbits-44xx.h" |
| #include "powerdomains.h" |
| |
| static int omap4_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst) |
| { |
| prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK, |
| (pwrst << OMAP_POWERSTATE_SHIFT), |
| pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL); |
| return 0; |
| } |
| |
| static int omap4_pwrdm_read_next_pwrst(struct powerdomain *pwrdm) |
| { |
| return prm_read_mod_bits_shift(pwrdm->prcm_offs, |
| OMAP4_PM_PWSTCTRL, OMAP_POWERSTATE_MASK); |
| } |
| |
| static int omap4_pwrdm_read_pwrst(struct powerdomain *pwrdm) |
| { |
| return prm_read_mod_bits_shift(pwrdm->prcm_offs, |
| OMAP4_PM_PWSTST, OMAP_POWERSTATEST_MASK); |
| } |
| |
| static int omap4_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm) |
| { |
| return prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP4_PM_PWSTST, |
| OMAP4430_LASTPOWERSTATEENTERED_MASK); |
| } |
| |
| struct pwrdm_ops omap4_pwrdm_operations = { |
| .pwrdm_set_next_pwrst = omap4_pwrdm_set_next_pwrst, |
| .pwrdm_read_next_pwrst = omap4_pwrdm_read_next_pwrst, |
| .pwrdm_read_pwrst = omap4_pwrdm_read_pwrst, |
| .pwrdm_read_prev_pwrst = omap4_pwrdm_read_prev_pwrst, |
| }; |