gpio: mxc_gpio: add OF_PLATDATA support
Continuing with the OF_PLATADATA support for iMX6 to reduce SPL
footprint, add it to mxc_gpio. Thanks to this, it will be possible to
enable card detection on MMC driver.
Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index 90d36fb..fc7d296 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -13,6 +13,8 @@
#include <asm/arch/imx-regs.h>
#include <asm/gpio.h>
#include <asm/io.h>
+#include <dt-structs.h>
+#include <mapmem.h>
enum mxc_gpio_direction {
MXC_GPIO_DIRECTION_IN,
@@ -22,6 +24,10 @@
#define GPIO_PER_BANK 32
struct mxc_gpio_plat {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ /* Put this first since driver model will copy the data here */
+ struct dtd_gpio_mxc dtplat;
+#endif
int bank_index;
struct gpio_regs *regs;
};
@@ -280,6 +286,12 @@
int banknum;
char name[18], *str;
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ struct dtd_gpio_mxc *dtplat = &plat->dtplat;
+
+ plat->regs = map_sysmem(dtplat->reg[0], dtplat->reg[1]);
+#endif
+
banknum = plat->bank_index;
if (IS_ENABLED(CONFIG_ARCH_IMX8))
sprintf(name, "GPIO%d_", banknum);
@@ -297,14 +309,15 @@
static int mxc_gpio_ofdata_to_platdata(struct udevice *dev)
{
- fdt_addr_t addr;
struct mxc_gpio_plat *plat = dev_get_platdata(dev);
+ if (!CONFIG_IS_ENABLED(OF_PLATDATA)) {
+ fdt_addr_t addr;
+ addr = devfdt_get_addr(dev);
+ if (addr == FDT_ADDR_T_NONE)
+ return -EINVAL;
- addr = devfdt_get_addr(dev);
- if (addr == FDT_ADDR_T_NONE)
- return -EINVAL;
-
- plat->regs = (struct gpio_regs *)addr;
+ plat->regs = (struct gpio_regs *)addr;
+ }
plat->bank_index = dev->req_seq;
return 0;
@@ -332,6 +345,8 @@
.bind = mxc_gpio_bind,
};
+U_BOOT_DRIVER_ALIAS(gpio_mxc, fsl_imx6q_gpio)
+
#if !CONFIG_IS_ENABLED(OF_CONTROL)
static const struct mxc_gpio_plat mxc_plat[] = {
{ 0, (struct gpio_regs *)GPIO1_BASE_ADDR },