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/spi/designware_spi.c b/drivers/spi/designware_spi.c
index 91e613e..66ff8ee 100644
--- a/drivers/spi/designware_spi.c
+++ b/drivers/spi/designware_spi.c
@@ -126,7 +126,7 @@
static int request_gpio_cs(struct udevice *bus)
{
-#if defined(CONFIG_DM_GPIO) && !defined(CONFIG_SPL_BUILD)
+#if CONFIG_IS_ENABLED(DM_GPIO) && !defined(CONFIG_SPL_BUILD)
struct dw_spi_priv *priv = dev_get_priv(bus);
int ret;
@@ -373,7 +373,7 @@
*/
__weak void external_cs_manage(struct udevice *dev, bool on)
{
-#if defined(CONFIG_DM_GPIO) && !defined(CONFIG_SPL_BUILD)
+#if CONFIG_IS_ENABLED(DM_GPIO) && !defined(CONFIG_SPL_BUILD)
struct dw_spi_priv *priv = dev_get_priv(dev->parent);
if (!dm_gpio_is_valid(&priv->cs_gpio))