summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/powerdomain44xx.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-omap2/powerdomain44xx.c')
-rw-r--r--arch/arm/mach-omap2/powerdomain44xx.c285
1 files changed, 0 insertions, 285 deletions
diff --git a/arch/arm/mach-omap2/powerdomain44xx.c b/arch/arm/mach-omap2/powerdomain44xx.c
deleted file mode 100644
index aceb4f464c9b..000000000000
--- a/arch/arm/mach-omap2/powerdomain44xx.c
+++ /dev/null
@@ -1,285 +0,0 @@
-/*
- * OMAP4 powerdomain control
- *
- * Copyright (C) 2009-2010, 2012 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 <linux/bug.h>
-
-#include "powerdomain.h"
-#include <plat/prcm.h>
-#include "prm2xxx_3xxx.h"
-#include "prm44xx.h"
-#include "prminst44xx.h"
-#include "prm-regbits-44xx.h"
-
-static int omap4_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
-{
- omap4_prminst_rmw_inst_reg_bits(OMAP_POWERSTATE_MASK,
- (pwrst << OMAP_POWERSTATE_SHIFT),
- pwrdm->prcm_partition,
- pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
- return 0;
-}
-
-static int omap4_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
-{
- u32 v;
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
- v &= OMAP_POWERSTATE_MASK;
- v >>= OMAP_POWERSTATE_SHIFT;
-
- return v;
-}
-
-static int omap4_pwrdm_read_pwrst(struct powerdomain *pwrdm)
-{
- u32 v;
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTST);
- v &= OMAP_POWERSTATEST_MASK;
- v >>= OMAP_POWERSTATEST_SHIFT;
-
- return v;
-}
-
-static int omap4_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
-{
- u32 v;
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTST);
- v &= OMAP4430_LASTPOWERSTATEENTERED_MASK;
- v >>= OMAP4430_LASTPOWERSTATEENTERED_SHIFT;
-
- return v;
-}
-
-static int omap4_pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm)
-{
- omap4_prminst_rmw_inst_reg_bits(OMAP4430_LOWPOWERSTATECHANGE_MASK,
- (1 << OMAP4430_LOWPOWERSTATECHANGE_SHIFT),
- pwrdm->prcm_partition,
- pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
- return 0;
-}
-
-static int omap4_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
-{
- omap4_prminst_rmw_inst_reg_bits(OMAP4430_LASTPOWERSTATEENTERED_MASK,
- OMAP4430_LASTPOWERSTATEENTERED_MASK,
- pwrdm->prcm_partition,
- pwrdm->prcm_offs, OMAP4_PM_PWSTST);
- return 0;
-}
-
-static int omap4_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
-{
- u32 v;
-
- v = pwrst << __ffs(OMAP4430_LOGICRETSTATE_MASK);
- omap4_prminst_rmw_inst_reg_bits(OMAP4430_LOGICRETSTATE_MASK, v,
- pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
-
- return 0;
-}
-
-static int omap4_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
- u8 pwrst)
-{
- u32 m;
-
- m = omap2_pwrdm_get_mem_bank_onstate_mask(bank);
-
- omap4_prminst_rmw_inst_reg_bits(m, (pwrst << __ffs(m)),
- pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
-
- return 0;
-}
-
-static int omap4_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
- u8 pwrst)
-{
- u32 m;
-
- m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
-
- omap4_prminst_rmw_inst_reg_bits(m, (pwrst << __ffs(m)),
- pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
-
- return 0;
-}
-
-static int omap4_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
-{
- u32 v;
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTST);
- v &= OMAP4430_LOGICSTATEST_MASK;
- v >>= OMAP4430_LOGICSTATEST_SHIFT;
-
- return v;
-}
-
-static int omap4_pwrdm_read_logic_retst(struct powerdomain *pwrdm)
-{
- u32 v;
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
- v &= OMAP4430_LOGICRETSTATE_MASK;
- v >>= OMAP4430_LOGICRETSTATE_SHIFT;
-
- return v;
-}
-
-/**
- * omap4_pwrdm_read_prev_logic_pwrst - read the previous logic powerstate
- * @pwrdm: struct powerdomain * to read the state for
- *
- * Reads the previous logic powerstate for a powerdomain. This
- * function must determine the previous logic powerstate by first
- * checking the previous powerstate for the domain. If that was OFF,
- * then logic has been lost. If previous state was RETENTION, the
- * function reads the setting for the next retention logic state to
- * see the actual value. In every other case, the logic is
- * retained. Returns either PWRDM_POWER_OFF or PWRDM_POWER_RET
- * depending whether the logic was retained or not.
- */
-static int omap4_pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm)
-{
- int state;
-
- state = omap4_pwrdm_read_prev_pwrst(pwrdm);
-
- if (state == PWRDM_POWER_OFF)
- return PWRDM_POWER_OFF;
-
- if (state != PWRDM_POWER_RET)
- return PWRDM_POWER_RET;
-
- return omap4_pwrdm_read_logic_retst(pwrdm);
-}
-
-static int omap4_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
-{
- u32 m, v;
-
- m = omap2_pwrdm_get_mem_bank_stst_mask(bank);
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTST);
- v &= m;
- v >>= __ffs(m);
-
- return v;
-}
-
-static int omap4_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
-{
- u32 m, v;
-
- m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
- v &= m;
- v >>= __ffs(m);
-
- return v;
-}
-
-/**
- * omap4_pwrdm_read_prev_mem_pwrst - reads the previous memory powerstate
- * @pwrdm: struct powerdomain * to read mem powerstate for
- * @bank: memory bank index
- *
- * Reads the previous memory powerstate for a powerdomain. This
- * function must determine the previous memory powerstate by first
- * checking the previous powerstate for the domain. If that was OFF,
- * then logic has been lost. If previous state was RETENTION, the
- * function reads the setting for the next memory retention state to
- * see the actual value. In every other case, the logic is
- * retained. Returns either PWRDM_POWER_OFF or PWRDM_POWER_RET
- * depending whether logic was retained or not.
- */
-static int omap4_pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
-{
- int state;
-
- state = omap4_pwrdm_read_prev_pwrst(pwrdm);
-
- if (state == PWRDM_POWER_OFF)
- return PWRDM_POWER_OFF;
-
- if (state != PWRDM_POWER_RET)
- return PWRDM_POWER_RET;
-
- return omap4_pwrdm_read_mem_retst(pwrdm, bank);
-}
-
-static int omap4_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 ((omap4_prminst_read_inst_reg(pwrdm->prcm_partition,
- pwrdm->prcm_offs,
- OMAP4_PM_PWSTST) &
- 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 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,
- .pwrdm_set_lowpwrstchange = omap4_pwrdm_set_lowpwrstchange,
- .pwrdm_clear_all_prev_pwrst = omap4_pwrdm_clear_all_prev_pwrst,
- .pwrdm_set_logic_retst = omap4_pwrdm_set_logic_retst,
- .pwrdm_read_logic_pwrst = omap4_pwrdm_read_logic_pwrst,
- .pwrdm_read_prev_logic_pwrst = omap4_pwrdm_read_prev_logic_pwrst,
- .pwrdm_read_logic_retst = omap4_pwrdm_read_logic_retst,
- .pwrdm_read_mem_pwrst = omap4_pwrdm_read_mem_pwrst,
- .pwrdm_read_mem_retst = omap4_pwrdm_read_mem_retst,
- .pwrdm_read_prev_mem_pwrst = omap4_pwrdm_read_prev_mem_pwrst,
- .pwrdm_set_mem_onst = omap4_pwrdm_set_mem_onst,
- .pwrdm_set_mem_retst = omap4_pwrdm_set_mem_retst,
- .pwrdm_wait_transition = omap4_pwrdm_wait_transition,
-};
OpenPOWER on IntegriCloud