X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=drivers%2Fgpio%2Frk_gpio.c;h=3d96678a45a71a0ada12767aeba690ff33fa29fe;hb=90c2ebd2156982eee1af6faa00f6740e9f79b3c5;hp=64abcbaa0ac8c654fe1e7342ae783a861a0d5938;hpb=1cb9cb3ec0f19b8c54bb01670a530f5bc210d5f3;p=oweals%2Fu-boot.git

diff --git a/drivers/gpio/rk_gpio.c b/drivers/gpio/rk_gpio.c
index 64abcbaa0a..3d96678a45 100644
--- a/drivers/gpio/rk_gpio.c
+++ b/drivers/gpio/rk_gpio.c
@@ -1,19 +1,19 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2015 Google, Inc
  *
  * (C) Copyright 2008-2014 Rockchip Electronics
  * Peter, Software Engineering, <superpeter.cai@gmail.com>.
- *
- * SPDX-License-Identifier:     GPL-2.0+
  */
 
 #include <common.h>
 #include <dm.h>
 #include <syscon.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
 #include <asm/gpio.h>
 #include <asm/io.h>
-#include <asm/arch/clock.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/gpio.h>
 #include <dm/pinctrl.h>
 #include <dt-bindings/clock/rk3288-cru.h>
 
@@ -86,16 +86,58 @@ static int rockchip_gpio_get_function(struct udevice *dev, unsigned offset)
 	ret = pinctrl_get_gpio_mux(priv->pinctrl, priv->bank, offset);
 	if (ret)
 		return ret;
-
-	/* If it's not 0, then it is not a GPIO */
-	if (ret)
-		return GPIOF_FUNC;
 	is_output = readl(&regs->swport_ddr) & OFFSET_TO_BIT(offset);
 
 	return is_output ? GPIOF_OUTPUT : GPIOF_INPUT;
 #endif
 }
 
+/* Simple SPL interface to GPIOs */
+#ifdef CONFIG_SPL_BUILD
+
+enum {
+	PULL_NONE_1V8 = 0,
+	PULL_DOWN_1V8 = 1,
+	PULL_UP_1V8 = 3,
+};
+
+int spl_gpio_set_pull(void *vregs, uint gpio, int pull)
+{
+	u32 *regs = vregs;
+	uint val;
+
+	regs += gpio >> GPIO_BANK_SHIFT;
+	gpio &= GPIO_OFFSET_MASK;
+	switch (pull) {
+	case GPIO_PULL_UP:
+		val = PULL_UP_1V8;
+		break;
+	case GPIO_PULL_DOWN:
+		val = PULL_DOWN_1V8;
+		break;
+	case GPIO_PULL_NORMAL:
+	default:
+		val = PULL_NONE_1V8;
+		break;
+	}
+	clrsetbits_le32(regs, 3 << (gpio * 2), val << (gpio * 2));
+
+	return 0;
+}
+
+int spl_gpio_output(void *vregs, uint gpio, int value)
+{
+	struct rockchip_gpio_regs * const regs = vregs;
+
+	clrsetbits_le32(&regs->swport_dr, 1 << gpio, value << gpio);
+
+	/* Set direction */
+	clrsetbits_le32(&regs->swport_ddr, 1 << gpio, 1 << gpio);
+
+	return 0;
+}
+#endif /* CONFIG_SPL_BUILD */
+
 static int rockchip_gpio_probe(struct udevice *dev)
 {
 	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
@@ -103,8 +145,7 @@ static int rockchip_gpio_probe(struct udevice *dev)
 	char *end;
 	int ret;
 
-	/* This only supports RK3288 at present */
-	priv->regs = (struct rockchip_gpio_regs *)dev_get_addr(dev);
+	priv->regs = dev_read_addr_ptr(dev);
 	ret = uclass_first_device_err(UCLASS_PINCTRL, &priv->pinctrl);
 	if (ret)
 		return ret;