dm: gpio: vf610: Add GPIO driver support
Add GPIO driver support to Freescale VF610
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
diff --git a/arch/arm/imx-common/iomux-v3.c b/arch/arm/imx-common/iomux-v3.c
index e88e6e2..7fb23dd 100644
--- a/arch/arm/imx-common/iomux-v3.c
+++ b/arch/arm/imx-common/iomux-v3.c
@@ -92,3 +92,29 @@
reg |= (value << start_bit);
writel(reg, base + group * 4);
}
+
+#ifdef CONFIG_IOMUX_SHARE_CONF_REG
+void imx_iomux_gpio_set_direction(unsigned int gpio,
+ unsigned int direction)
+{
+ u32 reg;
+ /*
+ * Only on Vybrid the input/output buffer enable flags
+ * are part of the shared mux/conf register.
+ */
+ reg = readl(base + (gpio << 2));
+
+ if (direction)
+ reg |= 0x2;
+ else
+ reg &= ~0x2;
+
+ writel(reg, base + (gpio << 2));
+}
+
+void imx_iomux_gpio_get_function(unsigned int gpio, u32 *gpio_state)
+{
+ *gpio_state = readl(base + (gpio << 2)) &
+ ((0X07 << PAD_MUX_MODE_SHIFT) | PAD_CTL_OBE_IBE_ENABLE);
+}
+#endif
diff --git a/arch/arm/include/asm/arch-vf610/gpio.h b/arch/arm/include/asm/arch-vf610/gpio.h
new file mode 100644
index 0000000..622b8f0
--- /dev/null
+++ b/arch/arm/include/asm/arch-vf610/gpio.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2015
+ * Bhuvanchandra DV, Toradex, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#ifndef __ASM_ARCH_VF610_GPIO_H
+#define __ASM_ARCH_VF610_GPIO_H
+
+#define VYBRID_GPIO_COUNT 32
+#define VF610_GPIO_DIRECTION_IN 0x0
+#define VF610_GPIO_DIRECTION_OUT 0x1
+
+/* GPIO registers */
+struct vybrid_gpio_regs {
+ u32 gpio_pdor;
+ u32 gpio_psor;
+ u32 gpio_pcor;
+ u32 gpio_ptor;
+ u32 gpio_pdir;
+};
+
+struct vybrid_gpio_platdata {
+ unsigned int chip;
+ u32 base;
+ const char *port_name;
+};
+#endif /* __ASM_ARCH_VF610_GPIO_H */
diff --git a/arch/arm/include/asm/arch-vf610/imx-regs.h b/arch/arm/include/asm/arch-vf610/imx-regs.h
index 2021981..7df3b1e 100644
--- a/arch/arm/include/asm/arch-vf610/imx-regs.h
+++ b/arch/arm/include/asm/arch-vf610/imx-regs.h
@@ -81,6 +81,11 @@
#define VREG_DIG_BASE_ADDR (AIPS0_BASE_ADDR + 0x0006D000)
#define SRC_BASE_ADDR (AIPS0_BASE_ADDR + 0x0006E000)
#define CMU_BASE_ADDR (AIPS0_BASE_ADDR + 0x0006F000)
+#define GPIO0_BASE_ADDR (AIPS0_BASE_ADDR + 0x000FF000)
+#define GPIO1_BASE_ADDR (AIPS0_BASE_ADDR + 0x000FF040)
+#define GPIO2_BASE_ADDR (AIPS0_BASE_ADDR + 0x000FF080)
+#define GPIO3_BASE_ADDR (AIPS0_BASE_ADDR + 0x000FF0C0)
+#define GPIO4_BASE_ADDR (AIPS0_BASE_ADDR + 0x000FF100)
/* AIPS 1 */
#define OCOTP_BASE_ADDR (AIPS1_BASE_ADDR + 0x00025000)
diff --git a/arch/arm/include/asm/imx-common/iomux-v3.h b/arch/arm/include/asm/imx-common/iomux-v3.h
index e0a49be..2581019 100644
--- a/arch/arm/include/asm/imx-common/iomux-v3.h
+++ b/arch/arm/include/asm/imx-common/iomux-v3.h
@@ -187,6 +187,12 @@
*/
void imx_iomux_set_gpr_register(int group, int start_bit,
int num_bits, int value);
+#ifdef CONFIG_IOMUX_SHARE_CONF_REG
+void imx_iomux_gpio_set_direction(unsigned int gpio,
+ unsigned int direction);
+void imx_iomux_gpio_get_function(unsigned int gpio,
+ u32 *gpio_state);
+#endif
/* macros for declaring and using pinmux array */
#if defined(CONFIG_MX6QDL)