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authorJianqun Xu <jay.xu@rock-chips.com>2021-08-16 04:21:11 +0300
committerLinus Walleij <linus.walleij@linaro.org>2021-08-17 02:01:49 +0300
commitff96a8c21cdbf4a36fbad341af3a41db44bbf878 (patch)
treefee7f997dfe059658b195d2e3f86b82e0138edbe /drivers/gpio/gpio-rockchip.c
parent936ee2675eee1faca0dcdfa79165c7990422e0fc (diff)
downloadlinux-ff96a8c21cdbf4a36fbad341af3a41db44bbf878.tar.xz
gpio/rockchip: use struct rockchip_gpio_regs for gpio controller
Store register offsets in the struct rockchip_gpio_regs, this patch prepare for the driver update for new gpio controller. Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com> Link: https://lore.kernel.org/r/20210816012111.1119125-1-jay.xu@rock-chips.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-rockchip.c')
-rw-r--r--drivers/gpio/gpio-rockchip.c86
1 files changed, 47 insertions, 39 deletions
diff --git a/drivers/gpio/gpio-rockchip.c b/drivers/gpio/gpio-rockchip.c
index b455fcf7efda..d6c07a957bd8 100644
--- a/drivers/gpio/gpio-rockchip.c
+++ b/drivers/gpio/gpio-rockchip.c
@@ -24,19 +24,21 @@
#include "../pinctrl/core.h"
#include "../pinctrl/pinctrl-rockchip.h"
-/* GPIO control registers */
-#define GPIO_SWPORT_DR 0x00
-#define GPIO_SWPORT_DDR 0x04
-#define GPIO_INTEN 0x30
-#define GPIO_INTMASK 0x34
-#define GPIO_INTTYPE_LEVEL 0x38
-#define GPIO_INT_POLARITY 0x3c
-#define GPIO_INT_STATUS 0x40
-#define GPIO_INT_RAWSTATUS 0x44
-#define GPIO_DEBOUNCE 0x48
-#define GPIO_PORTS_EOI 0x4c
-#define GPIO_EXT_PORT 0x50
-#define GPIO_LS_SYNC 0x60
+#define GPIO_TYPE_V1 (0) /* GPIO Version ID reserved */
+
+static const struct rockchip_gpio_regs gpio_regs_v1 = {
+ .port_dr = 0x00,
+ .port_ddr = 0x04,
+ .int_en = 0x30,
+ .int_mask = 0x34,
+ .int_type = 0x38,
+ .int_polarity = 0x3c,
+ .int_status = 0x40,
+ .int_rawstatus = 0x44,
+ .debounce = 0x48,
+ .port_eoi = 0x4c,
+ .ext_port = 0x50,
+};
static int rockchip_gpio_get_direction(struct gpio_chip *chip,
unsigned int offset)
@@ -44,7 +46,7 @@ static int rockchip_gpio_get_direction(struct gpio_chip *chip,
struct rockchip_pin_bank *bank = gpiochip_get_data(chip);
u32 data;
- data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
+ data = readl_relaxed(bank->reg_base + bank->gpio_regs->port_ddr);
if (data & BIT(offset))
return GPIO_LINE_DIRECTION_OUT;
@@ -60,13 +62,13 @@ static int rockchip_gpio_set_direction(struct gpio_chip *chip,
raw_spin_lock_irqsave(&bank->slock, flags);
- data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
+ data = readl_relaxed(bank->reg_base + bank->gpio_regs->port_ddr);
/* set bit to 1 for output, 0 for input */
if (!input)
data |= BIT(offset);
else
data &= ~BIT(offset);
- writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
+ writel_relaxed(data, bank->reg_base + bank->gpio_regs->port_ddr);
raw_spin_unlock_irqrestore(&bank->slock, flags);
@@ -77,7 +79,7 @@ static void rockchip_gpio_set(struct gpio_chip *gc, unsigned int offset,
int value)
{
struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
- void __iomem *reg = bank->reg_base + GPIO_SWPORT_DR;
+ void __iomem *reg = bank->reg_base + bank->gpio_regs->port_dr;
unsigned long flags;
u32 data;
@@ -97,9 +99,10 @@ static int rockchip_gpio_get(struct gpio_chip *gc, unsigned int offset)
struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
u32 data;
- data = readl(bank->reg_base + GPIO_EXT_PORT);
+ data = readl(bank->reg_base + bank->gpio_regs->ext_port);
data >>= offset;
data &= 1;
+
return data;
}
@@ -107,7 +110,7 @@ static void rockchip_gpio_set_debounce(struct gpio_chip *gc,
unsigned int offset, bool enable)
{
struct rockchip_pin_bank *bank = gpiochip_get_data(gc);
- void __iomem *reg = bank->reg_base + GPIO_DEBOUNCE;
+ void __iomem *reg = bank->reg_base + bank->gpio_regs->debounce;
unsigned long flags;
u32 data;
@@ -207,7 +210,7 @@ static void rockchip_irq_demux(struct irq_desc *desc)
chained_irq_enter(chip, desc);
- pend = readl_relaxed(bank->reg_base + GPIO_INT_STATUS);
+ pend = readl_relaxed(bank->reg_base + bank->gpio_regs->int_status);
while (pend) {
unsigned int irq, virq;
@@ -231,24 +234,26 @@ static void rockchip_irq_demux(struct irq_desc *desc)
u32 data, data_old, polarity;
unsigned long flags;
- data = readl_relaxed(bank->reg_base + GPIO_EXT_PORT);
+ data = readl_relaxed(bank->reg_base +
+ bank->gpio_regs->ext_port);
do {
raw_spin_lock_irqsave(&bank->slock, flags);
polarity = readl_relaxed(bank->reg_base +
- GPIO_INT_POLARITY);
+ bank->gpio_regs->int_polarity);
if (data & BIT(irq))
polarity &= ~BIT(irq);
else
polarity |= BIT(irq);
writel(polarity,
- bank->reg_base + GPIO_INT_POLARITY);
+ bank->reg_base +
+ bank->gpio_regs->int_polarity);
raw_spin_unlock_irqrestore(&bank->slock, flags);
data_old = data;
data = readl_relaxed(bank->reg_base +
- GPIO_EXT_PORT);
+ bank->gpio_regs->ext_port);
} while ((data & BIT(irq)) != (data_old & BIT(irq)));
}
@@ -270,9 +275,9 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
raw_spin_lock_irqsave(&bank->slock, flags);
- data = readl_relaxed(bank->reg_base + GPIO_SWPORT_DDR);
+ data = readl_relaxed(bank->reg_base + bank->gpio_regs->port_ddr);
data &= ~mask;
- writel_relaxed(data, bank->reg_base + GPIO_SWPORT_DDR);
+ writel_relaxed(data, bank->reg_base + bank->gpio_regs->port_ddr);
raw_spin_unlock_irqrestore(&bank->slock, flags);
@@ -284,8 +289,8 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
raw_spin_lock_irqsave(&bank->slock, flags);
irq_gc_lock(gc);
- level = readl_relaxed(gc->reg_base + GPIO_INTTYPE_LEVEL);
- polarity = readl_relaxed(gc->reg_base + GPIO_INT_POLARITY);
+ level = readl_relaxed(gc->reg_base + bank->gpio_regs->int_type);
+ polarity = readl_relaxed(gc->reg_base + bank->gpio_regs->int_polarity);
switch (type) {
case IRQ_TYPE_EDGE_BOTH:
@@ -296,7 +301,7 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
* Determine gpio state. If 1 next interrupt should be falling
* otherwise rising.
*/
- data = readl(bank->reg_base + GPIO_EXT_PORT);
+ data = readl(bank->reg_base + bank->gpio_regs->ext_port);
if (data & mask)
polarity &= ~mask;
else
@@ -329,8 +334,8 @@ static int rockchip_irq_set_type(struct irq_data *d, unsigned int type)
return -EINVAL;
}
- writel_relaxed(level, gc->reg_base + GPIO_INTTYPE_LEVEL);
- writel_relaxed(polarity, gc->reg_base + GPIO_INT_POLARITY);
+ writel_relaxed(level, gc->reg_base + bank->gpio_regs->int_type);
+ writel_relaxed(polarity, gc->reg_base + bank->gpio_regs->int_polarity);
irq_gc_unlock(gc);
raw_spin_unlock_irqrestore(&bank->slock, flags);
@@ -343,8 +348,8 @@ 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;
- bank->saved_masks = irq_reg_readl(gc, GPIO_INTMASK);
- irq_reg_writel(gc, ~gc->wake_active, GPIO_INTMASK);
+ bank->saved_masks = irq_reg_readl(gc, bank->gpio_regs->int_mask);
+ irq_reg_writel(gc, ~gc->wake_active, bank->gpio_regs->int_mask);
}
static void rockchip_irq_resume(struct irq_data *d)
@@ -352,7 +357,7 @@ 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;
- irq_reg_writel(gc, bank->saved_masks, GPIO_INTMASK);
+ irq_reg_writel(gc, bank->saved_masks, bank->gpio_regs->int_mask);
}
static void rockchip_irq_enable(struct irq_data *d)
@@ -400,8 +405,8 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank)
gc = irq_get_domain_generic_chip(bank->domain, 0);
gc->reg_base = bank->reg_base;
gc->private = bank;
- gc->chip_types[0].regs.mask = GPIO_INTMASK;
- gc->chip_types[0].regs.ack = GPIO_PORTS_EOI;
+ gc->chip_types[0].regs.mask = bank->gpio_regs->int_mask;
+ gc->chip_types[0].regs.ack = bank->gpio_regs->port_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;
@@ -418,9 +423,9 @@ static int rockchip_interrupts_register(struct rockchip_pin_bank *bank)
* Our driver only uses the concept of masked and always keeps
* things enabled, so for us that's all masked and all enabled.
*/
- writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTMASK);
- writel_relaxed(0xffffffff, bank->reg_base + GPIO_PORTS_EOI);
- writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTEN);
+ writel_relaxed(0xffffffff, bank->reg_base + bank->gpio_regs->int_mask);
+ writel_relaxed(0xffffffff, bank->reg_base + bank->gpio_regs->port_eoi);
+ writel_relaxed(0xffffffff, bank->reg_base + bank->gpio_regs->int_en);
gc->mask_cache = 0xffffffff;
irq_set_chained_handler_and_data(bank->irq,
@@ -510,6 +515,9 @@ static int rockchip_get_bank_data(struct rockchip_pin_bank *bank)
bank->irq = irq_of_parse_and_map(bank->of_node, 0);
+ bank->gpio_regs = &gpio_regs_v1;
+ bank->gpio_type = GPIO_TYPE_V1;
+
bank->clk = of_clk_get(bank->of_node, 0);
if (!IS_ERR(bank->clk))
return clk_prepare_enable(bank->clk);