From: Peter Geis <pgwipeout@gmail.com> To: Jianqun Xu <jay.xu@rock-chips.com>, huangtao@rock-chips.com, kever.yang@rock-chips.com, linus.walleij@linaro.org, heiko@sntech.de Cc: linux-gpio@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 6/7] gpio/rockchip: always enable clock for gpio controller Date: Sun, 11 Apr 2021 09:30:29 -0400 [thread overview] Message-ID: <20210411133030.1663936-7-pgwipeout@gmail.com> (raw) In-Reply-To: <20210411133030.1663936-1-pgwipeout@gmail.com> From: Jianqun Xu <jay.xu@rock-chips.com> 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> --- drivers/gpio/gpio-rockchip.c | 68 +++++------------------------------- 1 file changed, 9 insertions(+), 59 deletions(-) diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c index 92aaf1848449..048e7eecddba 100644 --- a/drivers/gpio/gpio-rockchip.c +++ b/drivers/gpio/gpio-rockchip.c @@ -139,17 +139,8 @@ static int rockchip_gpio_get_direction(struct gpio_chip *chip, { 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 = rockchip_gpio_readl_bit(bank, offset, bank->gpio_regs->port_ddr); - clk_disable(bank->clk); - if (data & BIT(offset)) return GPIO_LINE_DIRECTION_OUT; @@ -163,11 +154,9 @@ static int rockchip_gpio_set_direction(struct gpio_chip *chip, unsigned long flags; u32 data = input ? 0 : 1; - clk_enable(bank->clk); raw_spin_lock_irqsave(&bank->slock, flags); rockchip_gpio_writel_bit(bank, offset, data, bank->gpio_regs->port_ddr); raw_spin_unlock_irqrestore(&bank->slock, flags); - clk_disable(bank->clk); return 0; } @@ -178,11 +167,9 @@ static void rockchip_gpio_set(struct gpio_chip *gc, unsigned int offset, struct rockchip_pin_bank *bank = gpiochip_get_data(gc); unsigned long flags; - clk_enable(bank->clk); raw_spin_lock_irqsave(&bank->slock, flags); rockchip_gpio_writel_bit(bank, offset, value, bank->gpio_regs->port_dr); raw_spin_unlock_irqrestore(&bank->slock, flags); - clk_disable(bank->clk); } static int rockchip_gpio_get(struct gpio_chip *gc, unsigned int offset) @@ -190,11 +177,10 @@ static int rockchip_gpio_get(struct gpio_chip *gc, unsigned int offset) struct rockchip_pin_bank *bank = gpiochip_get_data(gc); u32 data; - clk_enable(bank->clk); data = readl(bank->reg_base + bank->gpio_regs->ext_port); - clk_disable(bank->clk); data >>= offset; data &= 1; + return data; } @@ -315,9 +301,7 @@ static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned int offset) if (!bank->domain) return -ENXIO; - clk_enable(bank->clk); virq = irq_create_mapping(bank->domain, offset); - clk_disable(bank->clk); return (virq) ? : -ENXIO; } @@ -409,7 +393,6 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type) unsigned long flags; int ret = 0; - clk_enable(bank->clk); raw_spin_lock_irqsave(&bank->slock, flags); rockchip_gpio_writel_bit(bank, d->hwirq, 0, @@ -480,7 +463,6 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type) out: irq_gc_unlock(gc); raw_spin_unlock_irqrestore(&bank->slock, flags); - clk_disable(bank->clk); return ret; } @@ -490,10 +472,8 @@ 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, bank->gpio_regs->int_mask); irq_reg_writel(gc, ~gc->wake_active, bank->gpio_regs->int_mask); - clk_disable(bank->clk); } static void rockchip_irq_resume(struct irq_data *d) @@ -501,27 +481,7 @@ 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, bank->gpio_regs->int_mask); - clk_disable(bank->clk); -} - -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); -} - -static void rockchip_irq_disable(struct irq_data *d) -{ - struct irq_chip_generic *gc = irq_data_get_irq_chip_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 rockchip_pin_bank *bank) @@ -530,19 +490,11 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank) struct irq_chip_generic *gc; int ret; - ret = clk_enable(bank->clk); - if (ret) { - dev_err(bank->dev, "failed to enable clock for bank %s\n", - bank->name); - return -EINVAL; - } - bank->domain = irq_domain_add_linear(bank->of_node, 32, &irq_generic_chip_ops, NULL); if (!bank->domain) { dev_warn(bank->dev, "could not init irq domain for bank %s\n", bank->name); - clk_disable(bank->clk); return -EINVAL; } @@ -554,7 +506,6 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank) dev_err(bank->dev, "could not alloc generic chips for bank %s\n", bank->name); irq_domain_remove(bank->domain); - clk_disable(bank->clk); return -EINVAL; } @@ -571,8 +522,8 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank) gc->chip_types[0].chip.irq_ack = irq_gc_ack_set_bit; gc->chip_types[0].chip.irq_mask = irq_gc_mask_set_bit; gc->chip_types[0].chip.irq_unmask = irq_gc_mask_clr_bit; - gc->chip_types[0].chip.irq_enable = rockchip_irq_enable; - gc->chip_types[0].chip.irq_disable = rockchip_irq_disable; + gc->chip_types[0].chip.irq_enable = irq_gc_mask_clr_bit; + gc->chip_types[0].chip.irq_disable = irq_gc_mask_set_bit; gc->chip_types[0].chip.irq_set_wake = irq_gc_set_wake; gc->chip_types[0].chip.irq_suspend = rockchip_irq_suspend; gc->chip_types[0].chip.irq_resume = rockchip_irq_resume; @@ -591,7 +542,6 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank) irq_set_chained_handler_and_data(bank->irq, rockchip_irq_demux, bank); - clk_disable(bank->clk); return 0; } @@ -695,7 +645,6 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank) if (IS_ERR(bank->db_clk)) { dev_err(bank->dev, "cannot find debounce clk\n"); bank->db_clk = NULL; - clk_disable(bank->clk); return -EINVAL; } } else { @@ -703,7 +652,6 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank) bank->gpio_type = GPIO_TYPE_V1; } - clk_disable(bank->clk); return 0; } @@ -756,15 +704,17 @@ static int rockchip_gpio_probe(struct platform_device *pdev) return ret; ret = rockchip_gpiolib_register(bank); - if (ret) { - clk_disable_unprepare(bank->clk); - return ret; - } + if (ret) + goto err_clk; platform_set_drvdata(pdev, bank); dev_info(dev, "probed %pOF\n", np); return 0; +err_clk: + clk_disable_unprepare(bank->clk); + + return ret; } static int rockchip_gpio_remove(struct platform_device *pdev) -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Peter Geis <pgwipeout@gmail.com> To: Jianqun Xu <jay.xu@rock-chips.com>, huangtao@rock-chips.com, kever.yang@rock-chips.com, linus.walleij@linaro.org, heiko@sntech.de Cc: linux-gpio@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 6/7] gpio/rockchip: always enable clock for gpio controller Date: Sun, 11 Apr 2021 09:30:29 -0400 [thread overview] Message-ID: <20210411133030.1663936-7-pgwipeout@gmail.com> (raw) In-Reply-To: <20210411133030.1663936-1-pgwipeout@gmail.com> From: Jianqun Xu <jay.xu@rock-chips.com> 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> --- drivers/gpio/gpio-rockchip.c | 68 +++++------------------------------- 1 file changed, 9 insertions(+), 59 deletions(-) diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c index 92aaf1848449..048e7eecddba 100644 --- a/drivers/gpio/gpio-rockchip.c +++ b/drivers/gpio/gpio-rockchip.c @@ -139,17 +139,8 @@ static int rockchip_gpio_get_direction(struct gpio_chip *chip, { 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 = rockchip_gpio_readl_bit(bank, offset, bank->gpio_regs->port_ddr); - clk_disable(bank->clk); - if (data & BIT(offset)) return GPIO_LINE_DIRECTION_OUT; @@ -163,11 +154,9 @@ static int rockchip_gpio_set_direction(struct gpio_chip *chip, unsigned long flags; u32 data = input ? 0 : 1; - clk_enable(bank->clk); raw_spin_lock_irqsave(&bank->slock, flags); rockchip_gpio_writel_bit(bank, offset, data, bank->gpio_regs->port_ddr); raw_spin_unlock_irqrestore(&bank->slock, flags); - clk_disable(bank->clk); return 0; } @@ -178,11 +167,9 @@ static void rockchip_gpio_set(struct gpio_chip *gc, unsigned int offset, struct rockchip_pin_bank *bank = gpiochip_get_data(gc); unsigned long flags; - clk_enable(bank->clk); raw_spin_lock_irqsave(&bank->slock, flags); rockchip_gpio_writel_bit(bank, offset, value, bank->gpio_regs->port_dr); raw_spin_unlock_irqrestore(&bank->slock, flags); - clk_disable(bank->clk); } static int rockchip_gpio_get(struct gpio_chip *gc, unsigned int offset) @@ -190,11 +177,10 @@ static int rockchip_gpio_get(struct gpio_chip *gc, unsigned int offset) struct rockchip_pin_bank *bank = gpiochip_get_data(gc); u32 data; - clk_enable(bank->clk); data = readl(bank->reg_base + bank->gpio_regs->ext_port); - clk_disable(bank->clk); data >>= offset; data &= 1; + return data; } @@ -315,9 +301,7 @@ static int rockchip_gpio_to_irq(struct gpio_chip *gc, unsigned int offset) if (!bank->domain) return -ENXIO; - clk_enable(bank->clk); virq = irq_create_mapping(bank->domain, offset); - clk_disable(bank->clk); return (virq) ? : -ENXIO; } @@ -409,7 +393,6 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type) unsigned long flags; int ret = 0; - clk_enable(bank->clk); raw_spin_lock_irqsave(&bank->slock, flags); rockchip_gpio_writel_bit(bank, d->hwirq, 0, @@ -480,7 +463,6 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type) out: irq_gc_unlock(gc); raw_spin_unlock_irqrestore(&bank->slock, flags); - clk_disable(bank->clk); return ret; } @@ -490,10 +472,8 @@ 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, bank->gpio_regs->int_mask); irq_reg_writel(gc, ~gc->wake_active, bank->gpio_regs->int_mask); - clk_disable(bank->clk); } static void rockchip_irq_resume(struct irq_data *d) @@ -501,27 +481,7 @@ 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, bank->gpio_regs->int_mask); - clk_disable(bank->clk); -} - -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); -} - -static void rockchip_irq_disable(struct irq_data *d) -{ - struct irq_chip_generic *gc = irq_data_get_irq_chip_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 rockchip_pin_bank *bank) @@ -530,19 +490,11 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank) struct irq_chip_generic *gc; int ret; - ret = clk_enable(bank->clk); - if (ret) { - dev_err(bank->dev, "failed to enable clock for bank %s\n", - bank->name); - return -EINVAL; - } - bank->domain = irq_domain_add_linear(bank->of_node, 32, &irq_generic_chip_ops, NULL); if (!bank->domain) { dev_warn(bank->dev, "could not init irq domain for bank %s\n", bank->name); - clk_disable(bank->clk); return -EINVAL; } @@ -554,7 +506,6 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank) dev_err(bank->dev, "could not alloc generic chips for bank %s\n", bank->name); irq_domain_remove(bank->domain); - clk_disable(bank->clk); return -EINVAL; } @@ -571,8 +522,8 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank) gc->chip_types[0].chip.irq_ack = irq_gc_ack_set_bit; gc->chip_types[0].chip.irq_mask = irq_gc_mask_set_bit; gc->chip_types[0].chip.irq_unmask = irq_gc_mask_clr_bit; - gc->chip_types[0].chip.irq_enable = rockchip_irq_enable; - gc->chip_types[0].chip.irq_disable = rockchip_irq_disable; + gc->chip_types[0].chip.irq_enable = irq_gc_mask_clr_bit; + gc->chip_types[0].chip.irq_disable = irq_gc_mask_set_bit; gc->chip_types[0].chip.irq_set_wake = irq_gc_set_wake; gc->chip_types[0].chip.irq_suspend = rockchip_irq_suspend; gc->chip_types[0].chip.irq_resume = rockchip_irq_resume; @@ -591,7 +542,6 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank) irq_set_chained_handler_and_data(bank->irq, rockchip_irq_demux, bank); - clk_disable(bank->clk); return 0; } @@ -695,7 +645,6 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank) if (IS_ERR(bank->db_clk)) { dev_err(bank->dev, "cannot find debounce clk\n"); bank->db_clk = NULL; - clk_disable(bank->clk); return -EINVAL; } } else { @@ -703,7 +652,6 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank) bank->gpio_type = GPIO_TYPE_V1; } - clk_disable(bank->clk); return 0; } @@ -756,15 +704,17 @@ static int rockchip_gpio_probe(struct platform_device *pdev) return ret; ret = rockchip_gpiolib_register(bank); - if (ret) { - clk_disable_unprepare(bank->clk); - return ret; - } + if (ret) + goto err_clk; platform_set_drvdata(pdev, bank); dev_info(dev, "probed %pOF\n", np); return 0; +err_clk: + clk_disable_unprepare(bank->clk); + + return ret; } static int rockchip_gpio_remove(struct platform_device *pdev) -- 2.25.1 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip
next prev parent reply other threads:[~2021-04-11 13:30 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-04-11 13:30 [PATCH v2 0/7] gpio-rockchip driver Peter Geis 2021-04-11 13:30 ` Peter Geis 2021-04-11 13:30 ` [PATCH v2 1/7] pinctrl/rockchip: separate struct rockchip_pin_bank to a head file Peter Geis 2021-04-11 13:30 ` Peter Geis 2021-04-11 13:30 ` [PATCH v2 2/7] pinctrl/pinctrl-rockchip.h: add pinctrl device to gpio bank struct Peter Geis 2021-04-11 13:30 ` Peter Geis 2021-04-11 13:30 ` [PATCH v2 3/7] gpio: separate gpio driver from pinctrl-rockchip driver Peter Geis 2021-04-11 13:30 ` Peter Geis 2021-04-11 17:51 ` Johan Jonker 2021-04-11 17:51 ` Johan Jonker 2021-04-11 17:55 ` Heiko Stübner 2021-04-11 17:55 ` Heiko Stübner 2021-04-11 17:58 ` Ezequiel Garcia 2021-04-11 17:58 ` Ezequiel Garcia 2021-04-13 9:48 ` Johan Jonker 2021-04-13 9:48 ` Johan Jonker 2021-04-11 13:30 ` [PATCH v2 4/7] gpio/rockchip: use struct rockchip_gpio_regs for gpio controller Peter Geis 2021-04-11 13:30 ` Peter Geis 2021-04-11 13:30 ` [PATCH v2 5/7] gpio/rockchip: support next version " Peter Geis 2021-04-11 13:30 ` Peter Geis 2021-04-11 13:30 ` Peter Geis [this message] 2021-04-11 13:30 ` [PATCH v2 6/7] gpio/rockchip: always enable clock for " Peter Geis 2021-04-11 13:30 ` [PATCH v2 7/7] gpio/rockchip: drop irq_gc_lock/irq_gc_unlock for irq set type Peter Geis 2021-04-11 13:30 ` Peter Geis 2021-04-12 12:13 ` [PATCH v2 0/7] gpio-rockchip driver Andy Shevchenko 2021-04-12 12:13 ` Andy Shevchenko 2021-04-12 13:30 ` Heiko Stübner 2021-04-12 13:30 ` Heiko Stübner 2021-04-12 13:33 ` Andy Shevchenko 2021-04-12 13:33 ` Andy Shevchenko 2021-04-12 15:00 ` Peter Geis 2021-04-12 15:00 ` Peter Geis 2021-04-14 7:29 ` Linus Walleij 2021-04-14 7:29 ` Linus Walleij
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