From: huang lin <[email protected]>
pclk_pd_pmu needs to keep running and with the upcoming gpio clock
handling this is not always the case anymore. So add it to the list
of critical clocks for now.
Signed-off-by: Heiko Stuebner <[email protected]>
Signed-off-by: Lin Huang <[email protected]>
---
Changes in v2:
Advices by Douglas Anderson
-fix commit message format error
drivers/clk/rockchip/clk-rk3288.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/clk/rockchip/clk-rk3288.c b/drivers/clk/rockchip/clk-rk3288.c
index 0df5bae..9040878 100644
--- a/drivers/clk/rockchip/clk-rk3288.c
+++ b/drivers/clk/rockchip/clk-rk3288.c
@@ -780,6 +780,7 @@ static const char *const rk3288_critical_clocks[] __initconst = {
"aclk_cpu",
"aclk_peri",
"hclk_peri",
+ "pclk_pd_pmu",
};
#ifdef CONFIG_PM_SLEEP
--
1.9.1
From: huang lin <[email protected]>
gpio can keep state even the clock disable, for save power
consumption, only enable gpio clock when it setting
Signed-off-by: Heiko Stuebner <[email protected]>
Signed-off-by: Lin Huang <[email protected]>
---
Changes in v2:
Advices by Douglas Anderson
-use readl_relaxed() instead readl()
-fix commit message format error
drivers/pinctrl/pinctrl-rockchip.c | 57 +++++++++++++++++++++++++++++++++++---
1 file changed, 53 insertions(+), 4 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index cc2843a..70a4539 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -945,6 +945,7 @@ static int _rockchip_pmx_gpio_set_direction(struct gpio_chip *chip,
if (ret < 0)
return ret;
+ clk_enable(bank->clk);
spin_lock_irqsave(&bank->slock, flags);
data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
@@ -953,9 +954,11 @@ static int _rockchip_pmx_gpio_set_direction(struct gpio_chip *chip,
data |= BIT(pin);
else
data &= ~BIT(pin);
+
writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
spin_unlock_irqrestore(&bank->slock, flags);
+ clk_disable(bank->clk);
return 0;
}
@@ -1389,6 +1392,7 @@ static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
unsigned long flags;
u32 data;
+ clk_enable(bank->clk);
spin_lock_irqsave(&bank->slock, flags);
data = readl(reg);
@@ -1398,6 +1402,7 @@ static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value)
writel(data, reg);
spin_unlock_irqrestore(&bank->slock, flags);
+ clk_disable(bank->clk);
}
/*
@@ -1409,7 +1414,9 @@ static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset)
struct rockchip_pin_bank *bank = gc_to_pin_bank(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;
@@ -1546,6 +1553,7 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
if (ret < 0)
return ret;
+ clk_enable(bank->clk);
spin_lock_irqsave(&bank->slock, flags);
data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
@@ -1603,6 +1611,7 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
default:
irq_gc_unlock(gc);
spin_unlock_irqrestore(&bank->slock, flags);
+ clk_disable(bank->clk);
return -EINVAL;
}
@@ -1611,6 +1620,7 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
irq_gc_unlock(gc);
spin_unlock_irqrestore(&bank->slock, flags);
+ clk_disable(bank->clk);
return 0;
}
@@ -1620,8 +1630,10 @@ 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)
@@ -1629,7 +1641,27 @@ 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_gc_mask_clr_bit(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);
+}
+
+void rockchip_irq_gc_mask_set_bit(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 platform_device *pdev,
@@ -1640,7 +1672,7 @@ static int rockchip_interrupts_register(struct platform_device *pdev,
unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
struct irq_chip_generic *gc;
int ret;
- int i;
+ int i, j;
for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
if (!bank->valid) {
@@ -1649,11 +1681,19 @@ 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;
}
@@ -1664,6 +1704,7 @@ 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;
}
@@ -1681,8 +1722,9 @@ static int rockchip_interrupts_register(struct platform_device *pdev,
gc->chip_types[0].regs.mask = GPIO_INTMASK;
gc->chip_types[0].regs.ack = GPIO_PORTS_EOI;
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_mask = rockchip_irq_gc_mask_set_bit;
+ gc->chip_types[0].chip.irq_unmask =
+ rockchip_irq_gc_mask_clr_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;
@@ -1691,6 +1733,12 @@ static int rockchip_interrupts_register(struct platform_device *pdev,
irq_set_chained_handler_and_data(bank->irq,
rockchip_irq_demux, bank);
+
+ /* map the gpio irqs here, when the clock is still running */
+ for (j = 0 ; j < 32 ; j++)
+ irq_create_mapping(bank->domain, j);
+
+ clk_disable(bank->clk);
}
return 0;
@@ -1808,7 +1856,7 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank,
if (IS_ERR(bank->clk))
return PTR_ERR(bank->clk);
- return clk_prepare_enable(bank->clk);
+ return clk_prepare(bank->clk);
}
static const struct of_device_id rockchip_pinctrl_dt_match[];
@@ -1927,6 +1975,7 @@ static int __maybe_unused rockchip_pinctrl_suspend(struct device *dev)
static int __maybe_unused rockchip_pinctrl_resume(struct device *dev)
{
struct rockchip_pinctrl *info = dev_get_drvdata(dev);
+
int ret = regmap_write(info->regmap_base, RK3288_GRF_GPIO6C_IOMUX,
rk3288_grf_gpio6c_iomux |
GPIO6C6_SEL_WRITE_ENABLE);
--
1.9.1
On 08/03/2015 06:03 PM, Lin Huang wrote:
> From: huang lin <[email protected]>
>
> pclk_pd_pmu needs to keep running and with the upcoming gpio clock
> handling this is not always the case anymore. So add it to the list
> of critical clocks for now.
>
> Signed-off-by: Heiko Stuebner <[email protected]>
> Signed-off-by: Lin Huang <[email protected]>
From: says huang lin, first signed-off-by is Heiko Stuebner, and final
signed-off-by is Lin Huang... who actually authored this patch? Is Lin
Huang the same person as huang lin ?
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
Hi Stephen,
On 04/08/15 09:14, Stephen Boyd wrote:
> On 08/03/2015 06:03 PM, Lin Huang wrote:
>> From: huang lin <[email protected]>
>>
>> pclk_pd_pmu needs to keep running and with the upcoming gpio clock
>> handling this is not always the case anymore. So add it to the list
>> of critical clocks for now.
>>
>> Signed-off-by: Heiko Stuebner <[email protected]>
>> Signed-off-by: Lin Huang <[email protected]>
>
> From: says huang lin, first signed-off-by is Heiko Stuebner, and final
> signed-off-by is Lin Huang... who actually authored this patch? Is Lin
> Huang the same person as huang lin ?
>
This patch writed by Heiko and upload by me, i am sorry confuse you with
my name, yes, Lin Huang and huang lin is the same person, it is all me.