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Message-Id: <20210816011948.1118959-2-jay.xu@rock-chips.com>
Date: Mon, 16 Aug 2021 09:19:40 +0800
From: Jianqun Xu <jay.xu@...k-chips.com>
To: linus.walleij@...aro.org, heiko@...ech.de
Cc: bgolaszewski@...libre.com, robh+dt@...nel.org,
linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
Jianqun Xu <jay.xu@...k-chips.com>
Subject: [PATCH v8 1/9] 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@...k-chips.com>
---
v8:
- none
v7:
- none
drivers/pinctrl/pinctrl-rockchip.c | 40 +-----------------------------
1 file changed, 1 insertion(+), 39 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 067fc4208de4..650c71c740f0 100644
--- 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[];
--
2.25.1
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