diff options
Diffstat (limited to 'drivers/pinctrl/intel')
| -rw-r--r-- | drivers/pinctrl/intel/pinctrl-baytrail.c | 59 |
1 files changed, 35 insertions, 24 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c index 2062c224e32f..b2602210784d 100644 --- a/drivers/pinctrl/intel/pinctrl-baytrail.c +++ b/drivers/pinctrl/intel/pinctrl-baytrail.c @@ -146,7 +146,7 @@ struct byt_gpio_pin_context { struct byt_gpio { struct gpio_chip chip; struct platform_device *pdev; - spinlock_t lock; + raw_spinlock_t lock; void __iomem *reg_base; struct pinctrl_gpio_range *range; struct byt_gpio_pin_context *saved_context; @@ -174,11 +174,11 @@ static void byt_gpio_clear_triggering(struct byt_gpio *vg, unsigned offset) unsigned long flags; u32 value; - spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&vg->lock, flags); value = readl(reg); value &= ~(BYT_TRIG_POS | BYT_TRIG_NEG | BYT_TRIG_LVL); writel(value, reg); - spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&vg->lock, flags); } static u32 byt_get_gpio_mux(struct byt_gpio *vg, unsigned offset) @@ -201,6 +201,9 @@ static int byt_gpio_request(struct gpio_chip *chip, unsigned offset) struct byt_gpio *vg = to_byt_gpio(chip); void __iomem *reg = byt_gpio_reg(chip, offset, BYT_CONF0_REG); u32 value, gpio_mux; + unsigned long flags; + + raw_spin_lock_irqsave(&vg->lock, flags); /* * In most cases, func pin mux 000 means GPIO function. @@ -214,18 +217,16 @@ static int byt_gpio_request(struct gpio_chip *chip, unsigned offset) value = readl(reg) & BYT_PIN_MUX; gpio_mux = byt_get_gpio_mux(vg, offset); if (WARN_ON(gpio_mux != value)) { - unsigned long flags; - - spin_lock_irqsave(&vg->lock, flags); value = readl(reg) & ~BYT_PIN_MUX; value |= gpio_mux; writel(value, reg); - spin_unlock_irqrestore(&vg->lock, flags); dev_warn(&vg->pdev->dev, "pin %u forcibly re-configured as GPIO\n", offset); } + raw_spin_unlock_irqrestore(&vg->lock, flags); + pm_runtime_get(&vg->pdev->dev); return 0; @@ -250,7 +251,7 @@ static int byt_irq_type(struct irq_data *d, unsigned type) if (offset >= vg->chip.ngpio) return -EINVAL; - spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&vg->lock, flags); value = readl(reg); WARN(value & BYT_DIRECT_IRQ_EN, @@ -269,7 +270,7 @@ static int byt_irq_type(struct irq_data *d, unsigned type) else if (type & IRQ_TYPE_LEVEL_MASK) __irq_set_handler_locked(d->irq, handle_level_irq); - spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&vg->lock, flags); return 0; } @@ -277,7 +278,15 @@ static int byt_irq_type(struct irq_data *d, unsigned type) static int byt_gpio_get(struct gpio_chip *chip, unsigned offset) { void __iomem *reg = byt_gpio_reg(chip, offset, BYT_VAL_REG); - return readl(reg) & BYT_LEVEL; + struct byt_gpio *vg = to_byt_gpio(chip); + unsigned long flags; + u32 val; + + raw_spin_lock_irqsave(&vg->lock, flags); + val = readl(reg); + raw_spin_unlock_irqrestore(&vg->lock, flags); + + return val & BYT_LEVEL; } static void byt_gpio_set(struct gpio_chip *chip, unsigned offset, int value) @@ -287,7 +296,7 @@ static void byt_gpio_set(struct gpio_chip *chip, unsigned offset, int value) unsigned long flags; u32 old_val; - spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&vg->lock, flags); old_val = readl(reg); @@ -296,7 +305,7 @@ static void byt_gpio_set(struct gpio_chip *chip, unsigned offset, int value) else writel(old_val & ~BYT_LEVEL, reg); - spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&vg->lock, flags); } static int byt_gpio_direction_input(struct gpio_chip *chip, unsigned offset) @@ -306,13 +315,13 @@ static int byt_gpio_direction_input(struct gpio_chip *chip, unsigned offset) unsigned long flags; u32 value; - spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&vg->lock, flags); value = readl(reg) | BYT_DIR_MASK; value &= ~BYT_INPUT_EN; /* active low */ writel(value, reg); - spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&vg->lock, flags); return 0; } @@ -326,7 +335,7 @@ static int byt_gpio_direction_output(struct gpio_chip *chip, unsigned long flags; u32 reg_val; - spin_lock_irqsave(&vg->lock, flags); + raw_spin_lock_irqsave(&vg->lock, flags); /* * Before making any direction modifications, do a check if gpio @@ -345,7 +354,7 @@ static int byt_gpio_direction_output(struct gpio_chip *chip, else writel(reg_val & ~BYT_LEVEL, reg); - spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&vg->lock, flags); return 0; } @@ -354,18 +363,19 @@ static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) { struct byt_gpio *vg = to_byt_gpio(chip); int i; - unsigned long flags; u32 conf0, val, offs; - spin_lock_irqsave(&vg->lock, flags); - for (i = 0; i < vg->chip.ngpio; i++) { const char *pull_str = NULL; const char *pull = NULL; + unsigned long flags; const char *label; offs = vg->range->pins[i] * 16; + + raw_spin_lock_irqsave(&vg->lock, flags); conf0 = readl(vg->reg_base + offs + BYT_CONF0_REG); val = readl(vg->reg_base + offs + BYT_VAL_REG); + raw_spin_unlock_irqrestore(&vg->lock, flags); label = gpiochip_is_requested(chip, i); if (!label) @@ -418,7 +428,6 @@ static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) seq_puts(s, "\n"); } - spin_unlock_irqrestore(&vg->lock, flags); } static void byt_gpio_irq_handler(unsigned irq, struct irq_desc *desc) @@ -450,8 +459,10 @@ static void byt_irq_ack(struct irq_data *d) unsigned offset = irqd_to_hwirq(d); void __iomem *reg; + raw_spin_lock(&vg->lock); reg = byt_gpio_reg(&vg->chip, offset, BYT_INT_STAT_REG); writel(BIT(offset % 32), reg); + raw_spin_unlock(&vg->lock); } static void byt_irq_unmask(struct irq_data *d) @@ -463,9 +474,9 @@ static void byt_irq_unmask(struct irq_data *d) void __iomem *reg; u32 value; - spin_lock_irqsave(&vg->lock, flags); - reg = byt_gpio_reg(&vg->chip, offset, BYT_CONF0_REG); + + raw_spin_lock_irqsave(&vg->lock, flags); value = readl(reg); switch (irqd_get_trigger_type(d)) { @@ -486,7 +497,7 @@ static void byt_irq_unmask(struct irq_data *d) writel(value, reg); - spin_unlock_irqrestore(&vg->lock, flags); + raw_spin_unlock_irqrestore(&vg->lock, flags); } static void byt_irq_mask(struct irq_data *d) @@ -578,7 +589,7 @@ static int byt_gpio_probe(struct platform_device *pdev) if (IS_ERR(vg->reg_base)) return PTR_ERR(vg->reg_base); - spin_lock_init(&vg->lock); + raw_spin_lock_init(&vg->lock); gc = &vg->chip; gc->label = dev_name(&pdev->dev); |