diff options
Diffstat (limited to 'arch/arm/mach-omap2/powerdomain33xx.c')
| -rw-r--r-- | arch/arm/mach-omap2/powerdomain33xx.c | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/arch/arm/mach-omap2/powerdomain33xx.c b/arch/arm/mach-omap2/powerdomain33xx.c deleted file mode 100644 index 67c5663899b..00000000000 --- a/arch/arm/mach-omap2/powerdomain33xx.c +++ /dev/null @@ -1,229 +0,0 @@ -/* - * AM33XX Powerdomain control - * - * Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.ti.com/ - * - * Derived from mach-omap2/powerdomain44xx.c written by 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 as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -#include <linux/io.h> -#include <linux/errno.h> -#include <linux/delay.h> - -#include <plat/prcm.h> - -#include "powerdomain.h" -#include "prm33xx.h" -#include "prm-regbits-33xx.h" - - -static int am33xx_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst) -{ - am33xx_prm_rmw_reg_bits(OMAP_POWERSTATE_MASK, - (pwrst << OMAP_POWERSTATE_SHIFT), - pwrdm->prcm_offs, pwrdm->pwrstctrl_offs); - return 0; -} - -static int am33xx_pwrdm_read_next_pwrst(struct powerdomain *pwrdm) -{ - u32 v; - - v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstctrl_offs); - v &= OMAP_POWERSTATE_MASK; - v >>= OMAP_POWERSTATE_SHIFT; - - return v; -} - -static int am33xx_pwrdm_read_pwrst(struct powerdomain *pwrdm) -{ - u32 v; - - v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs); - v &= OMAP_POWERSTATEST_MASK; - v >>= OMAP_POWERSTATEST_SHIFT; - - return v; -} - -static int am33xx_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm) -{ - u32 v; - - v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs); - v &= AM33XX_LASTPOWERSTATEENTERED_MASK; - v >>= AM33XX_LASTPOWERSTATEENTERED_SHIFT; - - return v; -} - -static int am33xx_pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm) -{ - am33xx_prm_rmw_reg_bits(AM33XX_LOWPOWERSTATECHANGE_MASK, - (1 << AM33XX_LOWPOWERSTATECHANGE_SHIFT), - pwrdm->prcm_offs, pwrdm->pwrstctrl_offs); - return 0; -} - -static int am33xx_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm) -{ - am33xx_prm_rmw_reg_bits(AM33XX_LASTPOWERSTATEENTERED_MASK, - AM33XX_LASTPOWERSTATEENTERED_MASK, - pwrdm->prcm_offs, pwrdm->pwrstst_offs); - return 0; -} - -static int am33xx_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst) -{ - u32 m; - - m = pwrdm->logicretstate_mask; - if (!m) - return -EINVAL; - - am33xx_prm_rmw_reg_bits(m, (pwrst << __ffs(m)), - pwrdm->prcm_offs, pwrdm->pwrstctrl_offs); - - return 0; -} - -static int am33xx_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm) -{ - u32 v; - - v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs); - v &= AM33XX_LOGICSTATEST_MASK; - v >>= AM33XX_LOGICSTATEST_SHIFT; - - return v; -} - -static int am33xx_pwrdm_read_logic_retst(struct powerdomain *pwrdm) -{ - u32 v, m; - - m = pwrdm->logicretstate_mask; - if (!m) - return -EINVAL; - - v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstctrl_offs); - v &= m; - v >>= __ffs(m); - - return v; -} - -static int am33xx_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank, - u8 pwrst) -{ - u32 m; - - m = pwrdm->mem_on_mask[bank]; - if (!m) - return -EINVAL; - - am33xx_prm_rmw_reg_bits(m, (pwrst << __ffs(m)), - pwrdm->prcm_offs, pwrdm->pwrstctrl_offs); - - return 0; -} - -static int am33xx_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank, - u8 pwrst) -{ - u32 m; - - m = pwrdm->mem_ret_mask[bank]; - if (!m) - return -EINVAL; - - am33xx_prm_rmw_reg_bits(m, (pwrst << __ffs(m)), - pwrdm->prcm_offs, pwrdm->pwrstctrl_offs); - - return 0; -} - -static int am33xx_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank) -{ - u32 m, v; - - m = pwrdm->mem_pwrst_mask[bank]; - if (!m) - return -EINVAL; - - v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs); - v &= m; - v >>= __ffs(m); - - return v; -} - -static int am33xx_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank) -{ - u32 m, v; - - m = pwrdm->mem_retst_mask[bank]; - if (!m) - return -EINVAL; - - v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstctrl_offs); - v &= m; - v >>= __ffs(m); - - return v; -} - -static int am33xx_pwrdm_wait_transition(struct powerdomain *pwrdm) -{ - u32 c = 0; - - /* - * REVISIT: pwrdm_wait_transition() may be better implemented - * via a callback and a periodic timer check -- how long do we expect - * powerdomain transitions to take? - */ - - /* XXX Is this udelay() value meaningful? */ - while ((am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs) - & OMAP_INTRANSITION_MASK) && - (c++ < PWRDM_TRANSITION_BAILOUT)) - udelay(1); - - if (c > PWRDM_TRANSITION_BAILOUT) { - pr_err("powerdomain: %s: waited too long to complete transition\n", - pwrdm->name); - return -EAGAIN; - } - - pr_debug("powerdomain: completed transition in %d loops\n", c); - - return 0; -} - -struct pwrdm_ops am33xx_pwrdm_operations = { - .pwrdm_set_next_pwrst = am33xx_pwrdm_set_next_pwrst, - .pwrdm_read_next_pwrst = am33xx_pwrdm_read_next_pwrst, - .pwrdm_read_pwrst = am33xx_pwrdm_read_pwrst, - .pwrdm_read_prev_pwrst = am33xx_pwrdm_read_prev_pwrst, - .pwrdm_set_logic_retst = am33xx_pwrdm_set_logic_retst, - .pwrdm_read_logic_pwrst = am33xx_pwrdm_read_logic_pwrst, - .pwrdm_read_logic_retst = am33xx_pwrdm_read_logic_retst, - .pwrdm_clear_all_prev_pwrst = am33xx_pwrdm_clear_all_prev_pwrst, - .pwrdm_set_lowpwrstchange = am33xx_pwrdm_set_lowpwrstchange, - .pwrdm_read_mem_pwrst = am33xx_pwrdm_read_mem_pwrst, - .pwrdm_read_mem_retst = am33xx_pwrdm_read_mem_retst, - .pwrdm_set_mem_onst = am33xx_pwrdm_set_mem_onst, - .pwrdm_set_mem_retst = am33xx_pwrdm_set_mem_retst, - .pwrdm_wait_transition = am33xx_pwrdm_wait_transition, -}; |