dm: gpio: Allow control of GPIO uclass in SPL
At present if CONFIG_SPL_GPIO_SUPPORT is enabled then the GPIO uclass
is included in SPL/TPL without any control for boards. Some boards may
want to disable this to reduce code size where GPIOs are not needed in
SPL or TPL.
Add a new Kconfig option to permit this. Default it to 'y' so that
existing boards work correctly.
Change existing uses of CONFIG_DM_GPIO to CONFIG_IS_ENABLED(DM_GPIO) to
preserve the current behaviour. Also update the 74x164 GPIO driver since
it cannot build with SPL.
This allows us to remove the hacks in config_uncmd_spl.h and
Makefile.uncmd_spl (eventually those files should be removed).
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/gpio/da8xx_gpio.h b/drivers/gpio/da8xx_gpio.h
index 1de9ec7..849e8d2 100644
--- a/drivers/gpio/da8xx_gpio.h
+++ b/drivers/gpio/da8xx_gpio.h
@@ -28,7 +28,7 @@
#define MAX_NUM_GPIOS 144
#define GPIO_BIT(gp) ((gp) & 0x1F)
-#ifdef CONFIG_DM_GPIO
+#if CONFIG_IS_ENABLED(DM_GPIO)
/* Information about a GPIO bank */
struct davinci_gpio_platdata {