[PATCH 08/25] gpio-vf610: Add i.MX93 support
Sascha Hauer
s.hauer at pengutronix.de
Fri Nov 10 04:57:43 PST 2023
Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
drivers/gpio/Kconfig | 3 +-
drivers/gpio/gpio-vf610.c | 78 ++++++++++++++++++++++++++++++++++++---
2 files changed, 75 insertions(+), 6 deletions(-)
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index e19f5a5aba..6f9ba2aad2 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -63,7 +63,8 @@ config GPIO_IMX
config GPIO_VF610
bool "VF610 GPIO controller" if COMPILE_TEST
- default y if ARCH_VF610
+ depends on ARCH_IMX || ARCH_VF610 || COMPILE_TEST
+ default y if ARCH_VF610 || ARCH_IMX93
config GPIO_MXS
bool "MXS GPIO controller" if COMPILE_TEST
diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c
index 43b2a18496..486463a2d2 100644
--- a/drivers/gpio/gpio-vf610.c
+++ b/drivers/gpio/gpio-vf610.c
@@ -21,6 +21,8 @@ struct vf610_gpio_port {
struct gpio_chip chip;
void __iomem *gpio_base;
unsigned int pinctrl_base;
+ bool have_paddr;
+ bool need_pinctrl;
};
#define GPIO_PDOR 0x00
@@ -28,9 +30,25 @@ struct vf610_gpio_port {
#define GPIO_PCOR 0x08
#define GPIO_PTOR 0x0c
#define GPIO_PDIR 0x10
+#define GPIO_PDDR 0x14
+
+struct fsl_gpio_soc_data {
+ /* SoCs has a Port Data Direction Register (PDDR) */
+ bool have_paddr;
+ bool need_pinctrl;
+};
+
+static const struct fsl_gpio_soc_data vf610_data = {
+ .need_pinctrl = true,
+};
+
+static const struct fsl_gpio_soc_data imx_data = {
+ .have_paddr = true,
+};
static const struct of_device_id vf610_gpio_dt_ids[] = {
- { .compatible = "fsl,vf610-gpio" },
+ { .compatible = "fsl,vf610-gpio", .data = &vf610_data, },
+ { .compatible = "fsl,imx7ulp-gpio", .data = &imx_data, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, vf610_gpio_dt_ids);
@@ -40,8 +58,16 @@ static int vf610_gpio_get_value(struct gpio_chip *chip, unsigned int gpio)
{
struct vf610_gpio_port *port =
container_of(chip, struct vf610_gpio_port, chip);
+ unsigned long mask = BIT(gpio);
+ unsigned long offset = GPIO_PDIR;
+
+ if (port->have_paddr) {
+ mask &= readl(port->gpio_base + GPIO_PDDR);
+ if (mask)
+ offset = GPIO_PDOR;
+ }
- return !!(readl(port->gpio_base + GPIO_PDIR) & BIT(gpio));
+ return !!(readl(port->gpio_base + offset) & BIT(gpio));
}
static void vf610_gpio_set_value(struct gpio_chip *chip,
@@ -58,8 +84,19 @@ static int vf610_gpio_direction_input(struct gpio_chip *chip, unsigned gpio)
{
struct vf610_gpio_port *port =
container_of(chip, struct vf610_gpio_port, chip);
+ unsigned long mask = BIT(gpio);
+ u32 val;
- return pinctrl_gpio_direction_input(port->pinctrl_base + gpio);
+ if (port->have_paddr) {
+ val = readl(port->gpio_base + GPIO_PDDR);
+ val &= ~mask;
+ writel(val, port->gpio_base + GPIO_PDDR);
+ }
+
+ if (port->need_pinctrl)
+ return pinctrl_gpio_direction_input(port->pinctrl_base + gpio);
+
+ return 0;
}
static int vf610_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
@@ -67,18 +104,41 @@ static int vf610_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
{
struct vf610_gpio_port *port =
container_of(chip, struct vf610_gpio_port, chip);
+ unsigned long mask = BIT(gpio);
+ u32 val;
vf610_gpio_set_value(chip, gpio, value);
- return pinctrl_gpio_direction_output(port->pinctrl_base + gpio);
+ if (port->have_paddr) {
+ val = readl(port->gpio_base + GPIO_PDDR);
+ val |= mask;
+ writel(val, port->gpio_base + GPIO_PDDR);
+ }
+
+ if (port->need_pinctrl)
+ return pinctrl_gpio_direction_output(port->pinctrl_base + gpio);
+
+ return 0;
}
static int vf610_gpio_get_direction(struct gpio_chip *chip, unsigned gpio)
{
struct vf610_gpio_port *port =
container_of(chip, struct vf610_gpio_port, chip);
+ u32 val;
+
+ if (port->have_paddr) {
+ val = readl(port->gpio_base + GPIO_PDDR);
+ if (val & BIT(gpio))
+ return GPIOF_DIR_OUT;
+ else
+ return GPIOF_DIR_IN;
+ }
+
+ if (port->need_pinctrl)
+ return pinctrl_gpio_get_direction(port->pinctrl_base + gpio);
- return pinctrl_gpio_get_direction(port->pinctrl_base + gpio);
+ return 0;
}
static struct gpio_ops vf610_gpio_ops = {
@@ -95,6 +155,11 @@ static int vf610_gpio_probe(struct device *dev)
struct resource *iores;
struct vf610_gpio_port *port;
const __be32 *gpio_ranges;
+ struct fsl_gpio_soc_data *devtype;
+
+ ret = dev_get_drvdata(dev, (const void **)&devtype);
+ if (ret)
+ return ret;
port = xzalloc(sizeof(*port));
@@ -106,6 +171,9 @@ static int vf610_gpio_probe(struct device *dev)
goto free_port;
}
+ port->have_paddr = devtype->have_paddr;
+ port->need_pinctrl = devtype->need_pinctrl;
+
port->pinctrl_base = be32_to_cpu(gpio_ranges[PINCTRL_BASE]);
port->chip.ngpio = be32_to_cpu(gpio_ranges[COUNT]);
--
2.39.2
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