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gpio/omap: raw read and write endian fix

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All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.

Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.

Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Victor Kamensky 2013-11-16 02:01:04 +02:00 committed by Linus Walleij
parent 4edd7901ee
commit 661553b9c6
1 changed files with 94 additions and 94 deletions
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188
drivers/gpio/gpio-omap.c
View File

@ -108,12 +108,12 @@ static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
u32 l;
reg += bank->regs->direction;
l = __raw_readl(reg);
l = readl_relaxed(reg);
if (is_input)
l |= 1 << gpio;
else
l &= ~(1 << gpio);
__raw_writel(l, reg);
writel_relaxed(l, reg);
bank->context.oe = l;
}
@ -132,7 +132,7 @@ static void _set_gpio_dataout_reg(struct gpio_bank *bank, int gpio, int enable)
bank->context.dataout &= ~l;
}
__raw_writel(l, reg);
writel_relaxed(l, reg);
}
/* set data out value using mask register */
@ -142,12 +142,12 @@ static void _set_gpio_dataout_mask(struct gpio_bank *bank, int gpio, int enable)
u32 gpio_bit = GPIO_BIT(bank, gpio);
u32 l;
l = __raw_readl(reg);
l = readl_relaxed(reg);
if (enable)
l |= gpio_bit;
else
l &= ~gpio_bit;
__raw_writel(l, reg);
writel_relaxed(l, reg);
bank->context.dataout = l;
}
@ -155,26 +155,26 @@ static int _get_gpio_datain(struct gpio_bank *bank, int offset)
{
void __iomem *reg = bank->base + bank->regs->datain;
return (__raw_readl(reg) & (1 << offset)) != 0;
return (readl_relaxed(reg) & (1 << offset)) != 0;
}
static int _get_gpio_dataout(struct gpio_bank *bank, int offset)
{
void __iomem *reg = bank->base + bank->regs->dataout;
return (__raw_readl(reg) & (1 << offset)) != 0;
return (readl_relaxed(reg) & (1 << offset)) != 0;
}
static inline void _gpio_rmw(void __iomem *base, u32 reg, u32 mask, bool set)
{
int l = __raw_readl(base + reg);
int l = readl_relaxed(base + reg);
if (set)
l |= mask;
else
l &= ~mask;
__raw_writel(l, base + reg);
writel_relaxed(l, base + reg);
}
static inline void _gpio_dbck_enable(struct gpio_bank *bank)
@ -183,7 +183,7 @@ static inline void _gpio_dbck_enable(struct gpio_bank *bank)
clk_enable(bank->dbck);
bank->dbck_enabled = true;
__raw_writel(bank->dbck_enable_mask,
writel_relaxed(bank->dbck_enable_mask,
bank->base + bank->regs->debounce_en);
}
}
@ -196,7 +196,7 @@ static inline void _gpio_dbck_disable(struct gpio_bank *bank)
* enabled but the clock is not, GPIO module seems to be unable
* to detect events and generate interrupts at least on OMAP3.
*/
__raw_writel(0, bank->base + bank->regs->debounce_en);
writel_relaxed(0, bank->base + bank->regs->debounce_en);
clk_disable(bank->dbck);
bank->dbck_enabled = false;
@ -233,10 +233,10 @@ static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
clk_enable(bank->dbck);
reg = bank->base + bank->regs->debounce;
__raw_writel(debounce, reg);
writel_relaxed(debounce, reg);
reg = bank->base + bank->regs->debounce_en;
val = __raw_readl(reg);
val = readl_relaxed(reg);
if (debounce)
val |= l;
@ -244,7 +244,7 @@ static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
val &= ~l;
bank->dbck_enable_mask = val;
__raw_writel(val, reg);
writel_relaxed(val, reg);
clk_disable(bank->dbck);
/*
* Enable debounce clock per module.
@ -283,12 +283,12 @@ static void _clear_gpio_debounce(struct gpio_bank *bank, unsigned gpio)
bank->dbck_enable_mask &= ~gpio_bit;
bank->context.debounce_en &= ~gpio_bit;
__raw_writel(bank->context.debounce_en,
writel_relaxed(bank->context.debounce_en,
bank->base + bank->regs->debounce_en);
if (!bank->dbck_enable_mask) {
bank->context.debounce = 0;
__raw_writel(bank->context.debounce, bank->base +
writel_relaxed(bank->context.debounce, bank->base +
bank->regs->debounce);
clk_disable(bank->dbck);
bank->dbck_enabled = false;
@ -311,18 +311,18 @@ static inline void set_gpio_trigger(struct gpio_bank *bank, int gpio,
trigger & IRQ_TYPE_EDGE_FALLING);
bank->context.leveldetect0 =
__raw_readl(bank->base + bank->regs->leveldetect0);
readl_relaxed(bank->base + bank->regs->leveldetect0);
bank->context.leveldetect1 =
__raw_readl(bank->base + bank->regs->leveldetect1);
readl_relaxed(bank->base + bank->regs->leveldetect1);
bank->context.risingdetect =
__raw_readl(bank->base + bank->regs->risingdetect);
readl_relaxed(bank->base + bank->regs->risingdetect);
bank->context.fallingdetect =
__raw_readl(bank->base + bank->regs->fallingdetect);
readl_relaxed(bank->base + bank->regs->fallingdetect);
if (likely(!(bank->non_wakeup_gpios & gpio_bit))) {
_gpio_rmw(base, bank->regs->wkup_en, gpio_bit, trigger != 0);
bank->context.wake_en =
__raw_readl(bank->base + bank->regs->wkup_en);
readl_relaxed(bank->base + bank->regs->wkup_en);
}
/* This part needs to be executed always for OMAP{34xx, 44xx} */
@ -347,8 +347,8 @@ static inline void set_gpio_trigger(struct gpio_bank *bank, int gpio,
exit:
bank->level_mask =
__raw_readl(bank->base + bank->regs->leveldetect0) |
__raw_readl(bank->base + bank->regs->leveldetect1);
readl_relaxed(bank->base + bank->regs->leveldetect0) |
readl_relaxed(bank->base + bank->regs->leveldetect1);
}
#ifdef CONFIG_ARCH_OMAP1
@ -366,13 +366,13 @@ static void _toggle_gpio_edge_triggering(struct gpio_bank *bank, int gpio)
reg += bank->regs->irqctrl;
l = __raw_readl(reg);
l = readl_relaxed(reg);
if ((l >> gpio) & 1)
l &= ~(1 << gpio);
else
l |= 1 << gpio;
__raw_writel(l, reg);
writel_relaxed(l, reg);
}
#else
static void _toggle_gpio_edge_triggering(struct gpio_bank *bank, int gpio) {}
@ -390,7 +390,7 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio,
} else if (bank->regs->irqctrl) {
reg += bank->regs->irqctrl;
l = __raw_readl(reg);
l = readl_relaxed(reg);
if ((trigger & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH)
bank->toggle_mask |= 1 << gpio;
if (trigger & IRQ_TYPE_EDGE_RISING)
@ -400,7 +400,7 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio,
else
return -EINVAL;
__raw_writel(l, reg);
writel_relaxed(l, reg);
} else if (bank->regs->edgectrl1) {
if (gpio & 0x08)
reg += bank->regs->edgectrl2;
@ -408,7 +408,7 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio,
reg += bank->regs->edgectrl1;
gpio &= 0x07;
l = __raw_readl(reg);
l = readl_relaxed(reg);
l &= ~(3 << (gpio << 1));
if (trigger & IRQ_TYPE_EDGE_RISING)
l |= 2 << (gpio << 1);
@ -418,8 +418,8 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio,
/* Enable wake-up during idle for dynamic tick */
_gpio_rmw(base, bank->regs->wkup_en, 1 << gpio, trigger);
bank->context.wake_en =
__raw_readl(bank->base + bank->regs->wkup_en);
__raw_writel(l, reg);
readl_relaxed(bank->base + bank->regs->wkup_en);
writel_relaxed(l, reg);
}
return 0;
}
@ -430,17 +430,17 @@ static void _enable_gpio_module(struct gpio_bank *bank, unsigned offset)
void __iomem *reg = bank->base + bank->regs->pinctrl;
/* Claim the pin for MPU */
__raw_writel(__raw_readl(reg) | (1 << offset), reg);
writel_relaxed(readl_relaxed(reg) | (1 << offset), reg);
}
if (bank->regs->ctrl && !BANK_USED(bank)) {
void __iomem *reg = bank->base + bank->regs->ctrl;
u32 ctrl;
ctrl = __raw_readl(reg);
ctrl = readl_relaxed(reg);
/* Module is enabled, clocks are not gated */
ctrl &= ~GPIO_MOD_CTRL_BIT;
__raw_writel(ctrl, reg);
writel_relaxed(ctrl, reg);
bank->context.ctrl = ctrl;
}
}
@ -455,17 +455,17 @@ static void _disable_gpio_module(struct gpio_bank *bank, unsigned offset)
/* Disable wake-up during idle for dynamic tick */
_gpio_rmw(base, bank->regs->wkup_en, 1 << offset, 0);
bank->context.wake_en =
__raw_readl(bank->base + bank->regs->wkup_en);
readl_relaxed(bank->base + bank->regs->wkup_en);
}
if (bank->regs->ctrl && !BANK_USED(bank)) {
void __iomem *reg = bank->base + bank->regs->ctrl;
u32 ctrl;
ctrl = __raw_readl(reg);
ctrl = readl_relaxed(reg);
/* Module is disabled, clocks are gated */
ctrl |= GPIO_MOD_CTRL_BIT;
__raw_writel(ctrl, reg);
writel_relaxed(ctrl, reg);
bank->context.ctrl = ctrl;
}
}
@ -474,7 +474,7 @@ static int gpio_is_input(struct gpio_bank *bank, int mask)
{
void __iomem *reg = bank->base + bank->regs->direction;
return __raw_readl(reg) & mask;
return readl_relaxed(reg) & mask;
}
static int gpio_irq_type(struct irq_data *d, unsigned type)
@ -538,16 +538,16 @@ static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
void __iomem *reg = bank->base;
reg += bank->regs->irqstatus;
__raw_writel(gpio_mask, reg);
writel_relaxed(gpio_mask, reg);
/* Workaround for clearing DSP GPIO interrupts to allow retention */
if (bank->regs->irqstatus2) {
reg = bank->base + bank->regs->irqstatus2;
__raw_writel(gpio_mask, reg);
writel_relaxed(gpio_mask, reg);
}
/* Flush posted write for the irq status to avoid spurious interrupts */
__raw_readl(reg);
readl_relaxed(reg);
}
static inline void _clear_gpio_irqstatus(struct gpio_bank *bank, int gpio)
@ -562,7 +562,7 @@ static u32 _get_gpio_irqbank_mask(struct gpio_bank *bank)
u32 mask = (1 << bank->width) - 1;
reg += bank->regs->irqenable;
l = __raw_readl(reg);
l = readl_relaxed(reg);
if (bank->regs->irqenable_inv)
l = ~l;
l &= mask;
@ -580,7 +580,7 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
bank->context.irqenable1 |= gpio_mask;
} else {
reg += bank->regs->irqenable;
l = __raw_readl(reg);
l = readl_relaxed(reg);
if (bank->regs->irqenable_inv)
l &= ~gpio_mask;
else
@ -588,7 +588,7 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
bank->context.irqenable1 = l;
}
__raw_writel(l, reg);
writel_relaxed(l, reg);
}
static void _disable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
@ -602,7 +602,7 @@ static void _disable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
bank->context.irqenable1 &= ~gpio_mask;
} else {
reg += bank->regs->irqenable;
l = __raw_readl(reg);
l = readl_relaxed(reg);
if (bank->regs->irqenable_inv)
l |= gpio_mask;
else
@ -610,7 +610,7 @@ static void _disable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
bank->context.irqenable1 = l;
}
__raw_writel(l, reg);
writel_relaxed(l, reg);
}
static inline void _set_gpio_irqenable(struct gpio_bank *bank, int gpio, int enable)
@ -646,7 +646,7 @@ static int _set_gpio_wakeup(struct gpio_bank *bank, int gpio, int enable)
else
bank->context.wake_en &= ~gpio_bit;
__raw_writel(bank->context.wake_en, bank->base + bank->regs->wkup_en);
writel_relaxed(bank->context.wake_en, bank->base + bank->regs->wkup_en);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
@ -748,7 +748,7 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
u32 enabled;
enabled = _get_gpio_irqbank_mask(bank);
isr_saved = isr = __raw_readl(isr_reg) & enabled;
isr_saved = isr = readl_relaxed(isr_reg) & enabled;
if (bank->level_mask)
level_mask = bank->level_mask & enabled;
@ -883,7 +883,7 @@ static int omap_mpuio_suspend_noirq(struct device *dev)
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
__raw_writel(0xffff & ~bank->context.wake_en, mask_reg);
writel_relaxed(0xffff & ~bank->context.wake_en, mask_reg);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
@ -898,7 +898,7 @@ static int omap_mpuio_resume_noirq(struct device *dev)
unsigned long flags;
spin_lock_irqsave(&bank->lock, flags);
__raw_writel(bank->context.wake_en, mask_reg);
writel_relaxed(bank->context.wake_en, mask_reg);
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
@ -1011,7 +1011,7 @@ static void __init omap_gpio_show_rev(struct gpio_bank *bank)
if (called || bank->regs->revision == USHRT_MAX)
return;
rev = __raw_readw(bank->base + bank->regs->revision);
rev = readw_relaxed(bank->base + bank->regs->revision);
pr_info("OMAP GPIO hardware version %d.%d\n",
(rev >> 4) & 0x0f, rev & 0x0f);
@ -1032,20 +1032,20 @@ static void omap_gpio_mod_init(struct gpio_bank *bank)
l = 0xffff;
if (bank->is_mpuio) {
__raw_writel(l, bank->base + bank->regs->irqenable);
writel_relaxed(l, bank->base + bank->regs->irqenable);
return;
}
_gpio_rmw(base, bank->regs->irqenable, l, bank->regs->irqenable_inv);
_gpio_rmw(base, bank->regs->irqstatus, l, !bank->regs->irqenable_inv);
if (bank->regs->debounce_en)
__raw_writel(0, base + bank->regs->debounce_en);
writel_relaxed(0, base + bank->regs->debounce_en);
/* Save OE default value (0xffffffff) in the context */
bank->context.oe = __raw_readl(bank->base + bank->regs->direction);
bank->context.oe = readl_relaxed(bank->base + bank->regs->direction);
/* Initialize interface clk ungated, module enabled */
if (bank->regs->ctrl)
__raw_writel(0, base + bank->regs->ctrl);
writel_relaxed(0, base + bank->regs->ctrl);
bank->dbck = clk_get(bank->dev, "dbclk");
if (IS_ERR(bank->dbck))
@ -1282,11 +1282,11 @@ static int omap_gpio_runtime_suspend(struct device *dev)
*/
wake_low = bank->context.leveldetect0 & bank->context.wake_en;
if (wake_low)
__raw_writel(wake_low | bank->context.fallingdetect,
writel_relaxed(wake_low | bank->context.fallingdetect,
bank->base + bank->regs->fallingdetect);
wake_hi = bank->context.leveldetect1 & bank->context.wake_en;
if (wake_hi)
__raw_writel(wake_hi | bank->context.risingdetect,
writel_relaxed(wake_hi | bank->context.risingdetect,
bank->base + bank->regs->risingdetect);
if (!bank->enabled_non_wakeup_gpios)
@ -1301,7 +1301,7 @@ static int omap_gpio_runtime_suspend(struct device *dev)
* non-wakeup GPIOs. Otherwise spurious IRQs will be
* generated. See OMAP2420 Errata item 1.101.
*/
bank->saved_datain = __raw_readl(bank->base +
bank->saved_datain = readl_relaxed(bank->base +
bank->regs->datain);
l1 = bank->context.fallingdetect;
l2 = bank->context.risingdetect;
@ -1309,8 +1309,8 @@ static int omap_gpio_runtime_suspend(struct device *dev)
l1 &= ~bank->enabled_non_wakeup_gpios;
l2 &= ~bank->enabled_non_wakeup_gpios;
__raw_writel(l1, bank->base + bank->regs->fallingdetect);
__raw_writel(l2, bank->base + bank->regs->risingdetect);
writel_relaxed(l1, bank->base + bank->regs->fallingdetect);
writel_relaxed(l2, bank->base + bank->regs->risingdetect);
bank->workaround_enabled = true;
@ -1358,9 +1358,9 @@ static int omap_gpio_runtime_resume(struct device *dev)
* generate a PRCM wakeup. Here we restore the
* pre-runtime_suspend() values for edge triggering.
*/
__raw_writel(bank->context.fallingdetect,
writel_relaxed(bank->context.fallingdetect,
bank->base + bank->regs->fallingdetect);
__raw_writel(bank->context.risingdetect,
writel_relaxed(bank->context.risingdetect,
bank->base + bank->regs->risingdetect);
if (bank->loses_context) {
@ -1382,7 +1382,7 @@ static int omap_gpio_runtime_resume(struct device *dev)
return 0;
}
l = __raw_readl(bank->base + bank->regs->datain);
l = readl_relaxed(bank->base + bank->regs->datain);
/*
* Check if any of the non-wakeup interrupt GPIOs have changed
@ -1412,24 +1412,24 @@ static int omap_gpio_runtime_resume(struct device *dev)
if (gen) {
u32 old0, old1;
old0 = __raw_readl(bank->base + bank->regs->leveldetect0);
old1 = __raw_readl(bank->base + bank->regs->leveldetect1);
old0 = readl_relaxed(bank->base + bank->regs->leveldetect0);
old1 = readl_relaxed(bank->base + bank->regs->leveldetect1);
if (!bank->regs->irqstatus_raw0) {
__raw_writel(old0 | gen, bank->base +
writel_relaxed(old0 | gen, bank->base +
bank->regs->leveldetect0);
__raw_writel(old1 | gen, bank->base +
writel_relaxed(old1 | gen, bank->base +
bank->regs->leveldetect1);
}
if (bank->regs->irqstatus_raw0) {
__raw_writel(old0 | l, bank->base +
writel_relaxed(old0 | l, bank->base +
bank->regs->leveldetect0);
__raw_writel(old1 | l, bank->base +
writel_relaxed(old1 | l, bank->base +
bank->regs->leveldetect1);
}
__raw_writel(old0, bank->base + bank->regs->leveldetect0);
__raw_writel(old1, bank->base + bank->regs->leveldetect1);
writel_relaxed(old0, bank->base + bank->regs->leveldetect0);
writel_relaxed(old1, bank->base + bank->regs->leveldetect1);
}
bank->workaround_enabled = false;
@ -1471,55 +1471,55 @@ static void omap_gpio_init_context(struct gpio_bank *p)
struct omap_gpio_reg_offs *regs = p->regs;
void __iomem *base = p->base;
p->context.ctrl = __raw_readl(base + regs->ctrl);
p->context.oe = __raw_readl(base + regs->direction);
p->context.wake_en = __raw_readl(base + regs->wkup_en);
p->context.leveldetect0 = __raw_readl(base + regs->leveldetect0);
p->context.leveldetect1 = __raw_readl(base + regs->leveldetect1);
p->context.risingdetect = __raw_readl(base + regs->risingdetect);
p->context.fallingdetect = __raw_readl(base + regs->fallingdetect);
p->context.irqenable1 = __raw_readl(base + regs->irqenable);
p->context.irqenable2 = __raw_readl(base + regs->irqenable2);
p->context.ctrl = readl_relaxed(base + regs->ctrl);
p->context.oe = readl_relaxed(base + regs->direction);
p->context.wake_en = readl_relaxed(base + regs->wkup_en);
p->context.leveldetect0 = readl_relaxed(base + regs->leveldetect0);
p->context.leveldetect1 = readl_relaxed(base + regs->leveldetect1);
p->context.risingdetect = readl_relaxed(base + regs->risingdetect);
p->context.fallingdetect = readl_relaxed(base + regs->fallingdetect);
p->context.irqenable1 = readl_relaxed(base + regs->irqenable);
p->context.irqenable2 = readl_relaxed(base + regs->irqenable2);
if (regs->set_dataout && p->regs->clr_dataout)
p->context.dataout = __raw_readl(base + regs->set_dataout);
p->context.dataout = readl_relaxed(base + regs->set_dataout);
else
p->context.dataout = __raw_readl(base + regs->dataout);
p->context.dataout = readl_relaxed(base + regs->dataout);
p->context_valid = true;
}
static void omap_gpio_restore_context(struct gpio_bank *bank)
{
__raw_writel(bank->context.wake_en,
writel_relaxed(bank->context.wake_en,
bank->base + bank->regs->wkup_en);
__raw_writel(bank->context.ctrl, bank->base + bank->regs->ctrl);
__raw_writel(bank->context.leveldetect0,
writel_relaxed(bank->context.ctrl, bank->base + bank->regs->ctrl);
writel_relaxed(bank->context.leveldetect0,
bank->base + bank->regs->leveldetect0);
__raw_writel(bank->context.leveldetect1,
writel_relaxed(bank->context.leveldetect1,
bank->base + bank->regs->leveldetect1);
__raw_writel(bank->context.risingdetect,
writel_relaxed(bank->context.risingdetect,
bank->base + bank->regs->risingdetect);
__raw_writel(bank->context.fallingdetect,
writel_relaxed(bank->context.fallingdetect,
bank->base + bank->regs->fallingdetect);
if (bank->regs->set_dataout && bank->regs->clr_dataout)
__raw_writel(bank->context.dataout,
writel_relaxed(bank->context.dataout,
bank->base + bank->regs->set_dataout);
else
__raw_writel(bank->context.dataout,
writel_relaxed(bank->context.dataout,
bank->base + bank->regs->dataout);
__raw_writel(bank->context.oe, bank->base + bank->regs->direction);
writel_relaxed(bank->context.oe, bank->base + bank->regs->direction);
if (bank->dbck_enable_mask) {
__raw_writel(bank->context.debounce, bank->base +
writel_relaxed(bank->context.debounce, bank->base +
bank->regs->debounce);
__raw_writel(bank->context.debounce_en,
writel_relaxed(bank->context.debounce_en,
bank->base + bank->regs->debounce_en);
}
__raw_writel(bank->context.irqenable1,
writel_relaxed(bank->context.irqenable1,
bank->base + bank->regs->irqenable);
__raw_writel(bank->context.irqenable2,
writel_relaxed(bank->context.irqenable2,
bank->base + bank->regs->irqenable2);
}
#endif /* CONFIG_PM_RUNTIME */