pinctrl/rockchip: always enable clock for gpio controller

Since gate and ungate pclk of gpio has very litte benifit for system
power consumption, just keep it always ungate.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Link: https://lore.kernel.org/r/20210816011948.1118959-2-jay.xu@rock-chips.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 067fc42..650c71c 100644 (file)
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -2299,17 +2299,8 @@ static int rockchip_gpio_get_direction(struct gpio_chip *chip, unsigned offset)
 {
        struct rockchip_pin_bank *bank = gpiochip_get_data(chip);
        u32 data;
-       int ret;
 
-       ret = clk_enable(bank->clk);
-       if (ret < 0) {
-               dev_err(bank->drvdata->dev,
-                       "failed to enable clock for bank %s\n", bank->name);
-               return ret;
-       }
        data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
-       clk_disable(bank->clk);
-
        if (data & BIT(offset))
                return GPIO_LINE_DIRECTION_OUT;
 
@@ -2335,7 +2326,6 @@ static int _rockchip_pmx_gpio_set_direction(struct gpio_chip *chip,
        if (ret < 0)
                return ret;
 
-       clk_enable(bank->clk);
        raw_spin_lock_irqsave(&bank->slock, flags);
 
        data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
@@ -2347,7 +2337,6 @@ static int _rockchip_pmx_gpio_set_direction(struct gpio_chip *chip,
        writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
 
        raw_spin_unlock_irqrestore(&bank->slock, flags);
-       clk_disable(bank->clk);
 
        return 0;
 }
@@ -2798,7 +2787,6 @@ static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
        unsigned long flags;
        u32 data;
 
-       clk_enable(bank->clk);
        raw_spin_lock_irqsave(&bank->slock, flags);
 
        data = readl(reg);
@@ -2808,7 +2796,6 @@ static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
        writel(data, reg);
 
        raw_spin_unlock_irqrestore(&bank->slock, flags);
-       clk_disable(bank->clk);
 }
 
 /*
@@ -2820,9 +2807,7 @@ static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset)
        struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
        u32 data;
 
-       clk_enable(bank->clk);
        data = readl(bank->reg_base + GPIO_EXT_PORT);
-       clk_disable(bank->clk);
        data >>= offset;
        data &= 1;
        return data;
@@ -2858,7 +2843,6 @@ static void rockchip_gpio_set_debounce(struct gpio_chip *gc,
        unsigned long flags;
        u32 data;
 
-       clk_enable(bank->clk);
        raw_spin_lock_irqsave(&bank->slock, flags);
 
        data = readl(reg);
@@ -2869,7 +2853,6 @@ static void rockchip_gpio_set_debounce(struct gpio_chip *gc,
        writel(data, reg);
 
        raw_spin_unlock_irqrestore(&bank->slock, flags);
-       clk_disable(bank->clk);
 }
 
 /*
@@ -2914,9 +2897,7 @@ static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
        if (!bank->domain)
                return -ENXIO;
 
-       clk_enable(bank->clk);
        virq = irq_create_mapping(bank->domain, offset);
-       clk_disable(bank->clk);
 
        return (virq) ? : -ENXIO;
 }
@@ -3015,7 +2996,6 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
        if (ret < 0)
                return ret;
 
-       clk_enable(bank->clk);
        raw_spin_lock_irqsave(&bank->slock, flags);
 
        data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
@@ -3073,7 +3053,6 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
        default:
                irq_gc_unlock(gc);
                raw_spin_unlock_irqrestore(&bank->slock, flags);
-               clk_disable(bank->clk);
                return -EINVAL;
        }
 
@@ -3082,7 +3061,6 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
 
        irq_gc_unlock(gc);
        raw_spin_unlock_irqrestore(&bank->slock, flags);
-       clk_disable(bank->clk);
 
        return 0;
 }
@@ -3092,10 +3070,8 @@ static void rockchip_irq_suspend(struct irq_data *d)
        struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
        struct rockchip_pin_bank *bank = gc->private;
 
-       clk_enable(bank->clk);
        bank->saved_masks = irq_reg_readl(gc, GPIO_INTMASK);
        irq_reg_writel(gc, ~gc->wake_active, GPIO_INTMASK);
-       clk_disable(bank->clk);
 }
 
 static void rockchip_irq_resume(struct irq_data *d)
@@ -3103,9 +3079,7 @@ static void rockchip_irq_resume(struct irq_data *d)
        struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
        struct rockchip_pin_bank *bank = gc->private;
 
-       clk_enable(bank->clk);
        irq_reg_writel(gc, bank->saved_masks, GPIO_INTMASK);
-       clk_disable(bank->clk);
 }
 
 static void rockchip_irq_enable(struct irq_data *d)
@@ -3113,7 +3087,6 @@ static void rockchip_irq_enable(struct irq_data *d)
        struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
        struct rockchip_pin_bank *bank = gc->private;
 
-       clk_enable(bank->clk);
        irq_gc_mask_clr_bit(d);
 }
 
@@ -3123,7 +3096,6 @@ static void rockchip_irq_disable(struct irq_data *d)
        struct rockchip_pin_bank *bank = gc->private;
 
        irq_gc_mask_set_bit(d);
-       clk_disable(bank->clk);
 }
 
 static int rockchip_interrupts_register(struct platform_device *pdev,
@@ -3143,19 +3115,11 @@ static int rockchip_interrupts_register(struct platform_device *pdev,
                        continue;
                }
 
-               ret = clk_enable(bank->clk);
-               if (ret) {
-                       dev_err(&pdev->dev, "failed to enable clock for bank %s\n",
-                               bank->name);
-                       continue;
-               }
-
                bank->domain = irq_domain_add_linear(bank->of_node, 32,
                                                &irq_generic_chip_ops, NULL);
                if (!bank->domain) {
                        dev_warn(&pdev->dev, "could not initialize irq domain for bank %s\n",
                                 bank->name);
-                       clk_disable(bank->clk);
                        continue;
                }
 
@@ -3166,7 +3130,6 @@ static int rockchip_interrupts_register(struct platform_device *pdev,
                        dev_err(&pdev->dev, "could not alloc generic chips for bank %s\n",
                                bank->name);
                        irq_domain_remove(bank->domain);
-                       clk_disable(bank->clk);
                        continue;
                }
 
@@ -3198,7 +3161,6 @@ static int rockchip_interrupts_register(struct platform_device *pdev,
 
                irq_set_chained_handler_and_data(bank->irq,
                                                 rockchip_irq_demux, bank);
-               clk_disable(bank->clk);
        }
 
        return 0;
@@ -3317,7 +3279,7 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank,
        if (IS_ERR(bank->clk))
                return PTR_ERR(bank->clk);
 
-       return clk_prepare(bank->clk);
+       return clk_prepare_enable(bank->clk);
 }
 
 static const struct of_device_id rockchip_pinctrl_dt_match[];