rockchip: pinctrl: Add rv1108 pinctrl driver

Add pinctrl support for Rockchip rv1108 soc

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

3 files changed, 195 insertions, 0 deletions

diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index 79249e0..150c68d 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -217,6 +217,16 @@ config PINCTRL_ROCKCHIP_RK3399
 	  the GPIO definitions and pin control functions for each available
 	  multiplex function.
 
+config PINCTRL_ROCKCHIP_RV1108
+	bool "Rockchip rv1108 pin control driver"
+	depends on DM
+	help
+	  Support pin multiplexing control on Rockchip rv1108 SoC.
+
+	  The driver is controlled by a device tree node which contains
+	  both the GPIO definitions and pin control functions for each
+	  available multiplex function.
+
 config PINCTRL_SANDBOX
 	bool "Sandbox pinctrl driver"
 	depends on SANDBOX
diff --git a/drivers/pinctrl/rockchip/Makefile b/drivers/pinctrl/rockchip/Makefile
index 7b7c470..a1c655d 100644
--- a/drivers/pinctrl/rockchip/Makefile
+++ b/drivers/pinctrl/rockchip/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_PINCTRL_ROCKCHIP_RK3288) += pinctrl_rk3288.o
 obj-$(CONFIG_PINCTRL_ROCKCHIP_RK3328) += pinctrl_rk3328.o
 obj-$(CONFIG_PINCTRL_ROCKCHIP_RK3368) += pinctrl_rk3368.o
 obj-$(CONFIG_PINCTRL_ROCKCHIP_RK3399) += pinctrl_rk3399.o
+obj-$(CONFIG_PINCTRL_ROCKCHIP_RV1108) += pinctrl_rv1108.o
diff --git a/drivers/pinctrl/rockchip/pinctrl_rv1108.c b/drivers/pinctrl/rockchip/pinctrl_rv1108.c
new file mode 100644
index 0000000..bdf3910
--- /dev/null
+++ b/drivers/pinctrl/rockchip/pinctrl_rv1108.c
@@ -0,0 +1,184 @@
+/*
+ * (C) Copyright 2016 Rockchip Electronics Co., Ltd
+ * Author: Andy Yan <andy.yan@rock-chips.com>
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <syscon.h>
+#include <asm/io.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/grf_rv1108.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/periph.h>
+#include <dm/pinctrl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct rv1108_pinctrl_priv {
+	struct rv1108_grf *grf;
+};
+
+static void pinctrl_rv1108_uart_config(struct rv1108_grf *grf, int uart_id)
+{
+	switch (uart_id) {
+	case PERIPH_ID_UART0:
+		rk_clrsetreg(&grf->gpio3a_iomux,
+			     GPIO3A6_MASK | GPIO3A5_MASK,
+			     GPIO3A6_UART1_SOUT << GPIO3A6_SHIFT |
+			     GPIO3A5_UART1_SIN << GPIO3A5_SHIFT);
+		break;
+	case PERIPH_ID_UART1:
+		rk_clrsetreg(&grf->gpio1d_iomux,
+			     GPIO1D3_MASK | GPIO1D2_MASK | GPIO1D1_MASK |
+			     GPIO1D0_MASK,
+			     GPIO1D3_UART0_SOUT << GPIO1D3_SHIFT |
+			     GPIO1D2_UART0_SIN << GPIO1D2_SHIFT |
+			     GPIO1D1_UART0_RTSN << GPIO1D1_SHIFT |
+			     GPIO1D0_UART0_CTSN << GPIO1D0_SHIFT);
+		break;
+	case PERIPH_ID_UART2:
+		rk_clrsetreg(&grf->gpio2d_iomux,
+			     GPIO2D2_MASK | GPIO2D1_MASK,
+			     GPIO2D2_UART2_SOUT_M0 << GPIO2D2_SHIFT |
+			     GPIO2D1_UART2_SIN_M0 << GPIO2D1_SHIFT);
+		break;
+	}
+}
+
+static void pinctrl_rv1108_gmac_config(struct rv1108_grf *grf, int func)
+{
+	rk_clrsetreg(&grf->gpio1b_iomux,
+		     GPIO1B7_MASK | GPIO1B6_MASK | GPIO1B5_MASK |
+		     GPIO1B4_MASK | GPIO1B3_MASK | GPIO1B2_MASK,
+		     GPIO1B7_GMAC_RXDV << GPIO1B7_SHIFT |
+		     GPIO1B6_GMAC_RXD1 << GPIO1B6_SHIFT |
+		     GPIO1B5_GMAC_RXD0 << GPIO1B5_SHIFT |
+		     GPIO1B4_GMAC_TXEN << GPIO1B4_SHIFT |
+		     GPIO1B3_GMAC_TXD1 << GPIO1B3_SHIFT |
+		     GPIO1B2_GMAC_TXD0 << GPIO1B2_SHIFT);
+	rk_clrsetreg(&grf->gpio1c_iomux,
+		     GPIO1C5_MASK | GPIO1C4_MASK |
+		     GPIO1C3_MASK | GPIO1C2_MASK,
+		     GPIO1C5_GMAC_CLK << GPIO1C5_SHIFT |
+		     GPIO1C4_GMAC_MDC << GPIO1C4_SHIFT |
+		     GPIO1C3_GMAC_MDIO << GPIO1C3_SHIFT |
+		     GPIO1C2_GMAC_RXER << GPIO1C2_SHIFT);
+	writel(0xffff57f5, &grf->gpio1b_drv);
+}
+
+static void pinctrl_rv1108_sfc_config(struct rv1108_grf *grf)
+{
+	rk_clrsetreg(&grf->gpio2a_iomux, GPIO2A3_MASK | GPIO2A2_MASK |
+		     GPIO2A1_MASK | GPIO2A0_MASK,
+		     GPIO2A3_SFC_HOLD_IO3 << GPIO2A3_SHIFT |
+		     GPIO2A2_SFC_WP_IO2 << GPIO2A2_SHIFT |
+		     GPIO2A1_SFC_SO_IO1 << GPIO2A1_SHIFT |
+		     GPIO2A0_SFC_SI_IO0 << GPIO2A0_SHIFT);
+	rk_clrsetreg(&grf->gpio2b_iomux, GPIO2B7_MASK | GPIO2B4_MASK,
+		     GPIO2B7_SFC_CLK << GPIO2B7_SHIFT |
+		     GPIO2B4_SFC_CSN0 << GPIO2B4_SHIFT);
+}
+
+static int rv1108_pinctrl_request(struct udevice *dev, int func, int flags)
+{
+	struct rv1108_pinctrl_priv *priv = dev_get_priv(dev);
+
+	switch (func) {
+	case PERIPH_ID_UART0:
+	case PERIPH_ID_UART1:
+	case PERIPH_ID_UART2:
+		pinctrl_rv1108_uart_config(priv->grf, func);
+		break;
+	case PERIPH_ID_GMAC:
+		pinctrl_rv1108_gmac_config(priv->grf, func);
+	case PERIPH_ID_SFC:
+		pinctrl_rv1108_sfc_config(priv->grf);
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int rv1108_pinctrl_get_periph_id(struct udevice *dev,
+					struct udevice *periph)
+{
+	u32 cell[3];
+	int ret;
+
+	ret = fdtdec_get_int_array(gd->fdt_blob, dev_of_offset(periph),
+				   "interrupts", cell, ARRAY_SIZE(cell));
+	if (ret < 0)
+		return -EINVAL;
+
+	switch (cell[1]) {
+	case 11:
+		return PERIPH_ID_SDCARD;
+	case 13:
+		return PERIPH_ID_EMMC;
+	case 19:
+		return PERIPH_ID_GMAC;
+	case 30:
+		return PERIPH_ID_I2C0;
+	case 31:
+		return PERIPH_ID_I2C1;
+	case 32:
+		return PERIPH_ID_I2C2;
+	case 39:
+		return PERIPH_ID_PWM0;
+	case 44:
+		return PERIPH_ID_UART0;
+	case 45:
+		return PERIPH_ID_UART1;
+	case 46:
+		return PERIPH_ID_UART2;
+	case 56:
+		return PERIPH_ID_SFC;
+	}
+
+	return -ENOENT;
+}
+
+static int rv1108_pinctrl_set_state_simple(struct udevice *dev,
+					   struct udevice *periph)
+{
+	int func;
+
+	func = rv1108_pinctrl_get_periph_id(dev, periph);
+	if (func < 0)
+		return func;
+
+	return rv1108_pinctrl_request(dev, func, 0);
+}
+
+static struct pinctrl_ops rv1108_pinctrl_ops = {
+	.set_state_simple	= rv1108_pinctrl_set_state_simple,
+	.request		= rv1108_pinctrl_request,
+	.get_periph_id		= rv1108_pinctrl_get_periph_id,
+};
+
+static int rv1108_pinctrl_probe(struct udevice *dev)
+{
+	struct rv1108_pinctrl_priv *priv = dev_get_priv(dev);
+
+	priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+
+	return 0;
+}
+
+static const struct udevice_id rv1108_pinctrl_ids[] = {
+	{.compatible = "rockchip,rv1108-pinctrl" },
+	{ }
+};
+
+U_BOOT_DRIVER(pinctrl_rv1108) = {
+	.name           = "pinctrl_rv1108",
+	.id             = UCLASS_PINCTRL,
+	.of_match       = rv1108_pinctrl_ids,
+	.priv_auto_alloc_size = sizeof(struct rv1108_pinctrl_priv),
+	.ops            = &rv1108_pinctrl_ops,
+	.bind           = dm_scan_fdt_dev,
+	.probe          = rv1108_pinctrl_probe,
+};