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-rw-r--r--drivers/gpio/Kconfig7
-rw-r--r--drivers/gpio/at91_gpio.c10
-rw-r--r--drivers/gpio/mxc_gpio.c84
-rw-r--r--drivers/gpio/omap_gpio.c2
4 files changed, 77 insertions, 26 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index d21302f8da..b609e73bba 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -2,5 +2,8 @@ config DM_GPIO
bool "Enable Driver Model for GPIO drivers"
depends on DM
help
- If you want to use driver model for GPIO drivers, say Y.
- To use legacy GPIO drivers, say N.
+ Enable driver model for GPIO access. The standard GPIO
+ interface (gpio_get_value(), etc.) is then implemented by
+ the GPIO uclass. Drivers provide methods to query the
+ particular GPIOs that they provide. The uclass interface
+ is defined in include/asm-generic/gpio.h.
diff --git a/drivers/gpio/at91_gpio.c b/drivers/gpio/at91_gpio.c
index 6129c020ea..22fbd63098 100644
--- a/drivers/gpio/at91_gpio.c
+++ b/drivers/gpio/at91_gpio.c
@@ -451,7 +451,7 @@ struct at91_port_priv {
/* set GPIO pin 'gpio' as an input */
static int at91_gpio_direction_input(struct udevice *dev, unsigned offset)
{
- struct at91_port_priv *port = dev_get_platdata(dev);
+ struct at91_port_priv *port = dev_get_priv(dev);
at91_set_port_input(port->regs, offset, 0);
@@ -462,7 +462,7 @@ static int at91_gpio_direction_input(struct udevice *dev, unsigned offset)
static int at91_gpio_direction_output(struct udevice *dev, unsigned offset,
int value)
{
- struct at91_port_priv *port = dev_get_platdata(dev);
+ struct at91_port_priv *port = dev_get_priv(dev);
at91_set_port_output(port->regs, offset, value);
@@ -472,7 +472,7 @@ static int at91_gpio_direction_output(struct udevice *dev, unsigned offset,
/* read GPIO IN value of pin 'gpio' */
static int at91_gpio_get_value(struct udevice *dev, unsigned offset)
{
- struct at91_port_priv *port = dev_get_platdata(dev);
+ struct at91_port_priv *port = dev_get_priv(dev);
return at91_get_port_value(port->regs, offset);
}
@@ -481,7 +481,7 @@ static int at91_gpio_get_value(struct udevice *dev, unsigned offset)
static int at91_gpio_set_value(struct udevice *dev, unsigned offset,
int value)
{
- struct at91_port_priv *port = dev_get_platdata(dev);
+ struct at91_port_priv *port = dev_get_priv(dev);
at91_set_port_value(port->regs, offset, value);
@@ -490,7 +490,7 @@ static int at91_gpio_set_value(struct udevice *dev, unsigned offset,
static int at91_gpio_get_function(struct udevice *dev, unsigned offset)
{
- struct at91_port_priv *port = dev_get_platdata(dev);
+ struct at91_port_priv *port = dev_get_priv(dev);
/* GPIOF_FUNC is not implemented yet */
if (at91_get_port_output(port->regs, offset))
diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index 8bb9e39b72..815407bb03 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -23,6 +23,7 @@ enum mxc_gpio_direction {
#define GPIO_PER_BANK 32
struct mxc_gpio_plat {
+ int bank_index;
struct gpio_regs *regs;
};
@@ -150,6 +151,9 @@ int gpio_direction_output(unsigned gpio, int value)
#endif
#ifdef CONFIG_DM_GPIO
+#include <fdtdec.h>
+DECLARE_GLOBAL_DATA_PTR;
+
static int mxc_gpio_is_output(struct gpio_regs *regs, int offset)
{
u32 val;
@@ -258,23 +262,6 @@ static const struct dm_gpio_ops gpio_mxc_ops = {
.get_function = mxc_gpio_get_function,
};
-static const struct mxc_gpio_plat mxc_plat[] = {
- { (struct gpio_regs *)GPIO1_BASE_ADDR },
- { (struct gpio_regs *)GPIO2_BASE_ADDR },
- { (struct gpio_regs *)GPIO3_BASE_ADDR },
-#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
- defined(CONFIG_MX53) || defined(CONFIG_MX6)
- { (struct gpio_regs *)GPIO4_BASE_ADDR },
-#endif
-#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6)
- { (struct gpio_regs *)GPIO5_BASE_ADDR },
- { (struct gpio_regs *)GPIO6_BASE_ADDR },
-#endif
-#if defined(CONFIG_MX53) || defined(CONFIG_MX6)
- { (struct gpio_regs *)GPIO7_BASE_ADDR },
-#endif
-};
-
static int mxc_gpio_probe(struct udevice *dev)
{
struct mxc_bank_info *bank = dev_get_priv(dev);
@@ -283,7 +270,7 @@ static int mxc_gpio_probe(struct udevice *dev)
int banknum;
char name[18], *str;
- banknum = plat - mxc_plat;
+ banknum = plat->bank_index;
sprintf(name, "GPIO%d_", banknum + 1);
str = strdup(name);
if (!str)
@@ -295,12 +282,72 @@ static int mxc_gpio_probe(struct udevice *dev)
return 0;
}
+static int mxc_gpio_bind(struct udevice *dev)
+{
+ struct mxc_gpio_plat *plat = dev->platdata;
+ fdt_addr_t addr;
+
+ /*
+ * If platdata already exsits, directly return.
+ * Actually only when DT is not supported, platdata
+ * is statically initialized in U_BOOT_DEVICES.Here
+ * will return.
+ */
+ if (plat)
+ return 0;
+
+ addr = dev_get_addr(dev);
+ if (addr == FDT_ADDR_T_NONE)
+ return -ENODEV;
+
+ /*
+ * TODO:
+ * When every board is converted to driver model and DT is supported,
+ * this can be done by auto-alloc feature, but not using calloc
+ * to alloc memory for platdata.
+ */
+ plat = calloc(1, sizeof(*plat));
+ if (!plat)
+ return -ENOMEM;
+
+ plat->regs = (struct gpio_regs *)addr;
+ plat->bank_index = dev->req_seq;
+ dev->platdata = plat;
+
+ return 0;
+}
+
+static const struct udevice_id mxc_gpio_ids[] = {
+ { .compatible = "fsl,imx35-gpio" },
+ { }
+};
+
U_BOOT_DRIVER(gpio_mxc) = {
.name = "gpio_mxc",
.id = UCLASS_GPIO,
.ops = &gpio_mxc_ops,
.probe = mxc_gpio_probe,
.priv_auto_alloc_size = sizeof(struct mxc_bank_info),
+ .of_match = mxc_gpio_ids,
+ .bind = mxc_gpio_bind,
+};
+
+#ifndef CONFIG_OF_CONTROL
+static const struct mxc_gpio_plat mxc_plat[] = {
+ { 0, (struct gpio_regs *)GPIO1_BASE_ADDR },
+ { 1, (struct gpio_regs *)GPIO2_BASE_ADDR },
+ { 2, (struct gpio_regs *)GPIO3_BASE_ADDR },
+#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
+ defined(CONFIG_MX53) || defined(CONFIG_MX6)
+ { 3, (struct gpio_regs *)GPIO4_BASE_ADDR },
+#endif
+#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6)
+ { 4, (struct gpio_regs *)GPIO5_BASE_ADDR },
+ { 5, (struct gpio_regs *)GPIO6_BASE_ADDR },
+#endif
+#if defined(CONFIG_MX53) || defined(CONFIG_MX6)
+ { 6, (struct gpio_regs *)GPIO7_BASE_ADDR },
+#endif
};
U_BOOT_DEVICES(mxc_gpios) = {
@@ -320,3 +367,4 @@ U_BOOT_DEVICES(mxc_gpios) = {
#endif
};
#endif
+#endif
diff --git a/drivers/gpio/omap_gpio.c b/drivers/gpio/omap_gpio.c
index f3a7ccb51e..19fc451079 100644
--- a/drivers/gpio/omap_gpio.c
+++ b/drivers/gpio/omap_gpio.c
@@ -291,7 +291,7 @@ static int omap_gpio_get_function(struct udevice *dev, unsigned offset)
struct gpio_bank *bank = dev_get_priv(dev);
/* GPIOF_FUNC is not implemented yet */
- if (_get_gpio_direction(bank->base, offset) == OMAP_GPIO_DIR_OUT)
+ if (_get_gpio_direction(bank, offset) == OMAP_GPIO_DIR_OUT)
return GPIOF_OUTPUT;
else
return GPIOF_INPUT;
generated by cgit (git 2.34.1) at 2025-01-17 21:33:36 +0000