--- /dev/null
+/*
+ * Pinctrl driver for Rockchip 3036 SoCs
+ * (C) Copyright 2015 Rockchip Electronics Co., Ltd
+ *
+ * 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_rk3036.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/periph.h>
+#include <dm/pinctrl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct rk3036_pinctrl_priv {
+ struct rk3036_grf *grf;
+};
+
+static void pinctrl_rk3036_pwm_config(struct rk3036_grf *grf, int pwm_id)
+{
+ switch (pwm_id) {
+ case PERIPH_ID_PWM0:
+ rk_clrsetreg(&grf->gpio0d_iomux, GPIO0D2_MASK << GPIO0D2_SHIFT,
+ GPIO0D2_PWM0 << GPIO0D2_SHIFT);
+ break;
+ case PERIPH_ID_PWM1:
+ rk_clrsetreg(&grf->gpio0a_iomux, GPIO0A0_MASK << GPIO0A0_SHIFT,
+ GPIO0A0_PWM1 << GPIO0A0_SHIFT);
+ break;
+ case PERIPH_ID_PWM2:
+ rk_clrsetreg(&grf->gpio0a_iomux, GPIO0A1_MASK << GPIO0A1_SHIFT,
+ GPIO0A1_PWM2 << GPIO0A1_SHIFT);
+ break;
+ case PERIPH_ID_PWM3:
+ rk_clrsetreg(&grf->gpio0a_iomux, GPIO0D3_MASK << GPIO0D3_SHIFT,
+ GPIO0D3_PWM3 << GPIO0D3_SHIFT);
+ break;
+ default:
+ debug("pwm id = %d iomux error!\n", pwm_id);
+ break;
+ }
+}
+
+static void pinctrl_rk3036_i2c_config(struct rk3036_grf *grf, int i2c_id)
+{
+ switch (i2c_id) {
+ case PERIPH_ID_I2C0:
+ rk_clrsetreg(&grf->gpio0a_iomux,
+ GPIO0A1_MASK << GPIO0A1_SHIFT |
+ GPIO0A0_MASK << GPIO0A0_SHIFT,
+ GPIO0A1_I2C0_SDA << GPIO0A1_SHIFT |
+ GPIO0A0_I2C0_SCL << GPIO0A0_SHIFT);
+
+ break;
+ case PERIPH_ID_I2C1:
+ rk_clrsetreg(&grf->gpio0a_iomux,
+ GPIO0A3_MASK << GPIO0A3_SHIFT |
+ GPIO0A2_MASK << GPIO0A2_SHIFT,
+ GPIO0A3_I2C1_SDA << GPIO0A3_SHIFT |
+ GPIO0A2_I2C1_SCL << GPIO0A2_SHIFT);
+ break;
+ case PERIPH_ID_I2C2:
+ rk_clrsetreg(&grf->gpio2c_iomux,
+ GPIO2C5_MASK << GPIO2C5_SHIFT |
+ GPIO2C4_MASK << GPIO2C4_SHIFT,
+ GPIO2C5_I2C2_SCL << GPIO2C5_SHIFT |
+ GPIO2C4_I2C2_SDA << GPIO2C4_SHIFT);
+
+ break;
+ }
+}
+
+static void pinctrl_rk3036_spi_config(struct rk3036_grf *grf, int cs)
+{
+ switch (cs) {
+ case 0:
+ rk_clrsetreg(&grf->gpio1d_iomux,
+ GPIO1D6_MASK << GPIO1D6_SHIFT,
+ GPIO1D6_SPI_CSN0 << GPIO1D6_SHIFT);
+ break;
+ case 1:
+ rk_clrsetreg(&grf->gpio1d_iomux,
+ GPIO1D7_MASK << GPIO1D7_SHIFT,
+ GPIO1D7_SPI_CSN1 << GPIO1D7_SHIFT);
+ break;
+ }
+ rk_clrsetreg(&grf->gpio1d_iomux,
+ GPIO1D5_MASK << GPIO1D5_SHIFT |
+ GPIO1D4_MASK << GPIO1D4_SHIFT,
+ GPIO1D5_SPI_TXD << GPIO1D5_SHIFT |
+ GPIO1D4_SPI_RXD << GPIO1D4_SHIFT);
+
+ rk_clrsetreg(&grf->gpio2a_iomux,
+ GPIO2A0_MASK << GPIO2A0_SHIFT,
+ GPIO2A0_SPI_CLK << GPIO2A0_SHIFT);
+}
+
+static void pinctrl_rk3036_uart_config(struct rk3036_grf *grf, int uart_id)
+{
+ switch (uart_id) {
+ case PERIPH_ID_UART0:
+ rk_clrsetreg(&grf->gpio0c_iomux,
+ GPIO0C3_MASK << GPIO0C3_SHIFT |
+ GPIO0C2_MASK << GPIO0C2_SHIFT |
+ GPIO0C1_MASK << GPIO0C1_SHIFT |
+ GPIO0C0_MASK << GPIO0C0_SHIFT,
+ GPIO0C3_UART0_CTSN << GPIO0C3_SHIFT |
+ GPIO0C2_UART0_RTSN << GPIO0C2_SHIFT |
+ GPIO0C1_UART0_SIN << GPIO0C1_SHIFT |
+ GPIO0C0_UART0_SOUT << GPIO0C0_SHIFT);
+ break;
+ case PERIPH_ID_UART1:
+ rk_clrsetreg(&grf->gpio2c_iomux,
+ GPIO2C7_MASK << GPIO2C7_SHIFT |
+ GPIO2C6_MASK << GPIO2C6_SHIFT,
+ GPIO2C7_UART1_SOUT << GPIO2C7_SHIFT |
+ GPIO2C6_UART1_SIN << GPIO2C6_SHIFT);
+ break;
+ case PERIPH_ID_UART2:
+ rk_clrsetreg(&grf->gpio1c_iomux,
+ GPIO1C3_MASK << GPIO1C3_SHIFT |
+ GPIO1C2_MASK << GPIO1C2_SHIFT,
+ GPIO1C3_UART2_SOUT << GPIO1C3_SHIFT |
+ GPIO1C2_UART2_SIN << GPIO1C2_SHIFT);
+ break;
+ }
+}
+
+static void pinctrl_rk3036_sdmmc_config(struct rk3036_grf *grf, int mmc_id)
+{
+ switch (mmc_id) {
+ case PERIPH_ID_EMMC:
+ rk_clrsetreg(&grf->gpio1d_iomux, 0xffff,
+ GPIO1D7_EMMC_D7 << GPIO1D7_SHIFT |
+ GPIO1D6_EMMC_D6 << GPIO1D6_SHIFT |
+ GPIO1D5_EMMC_D5 << GPIO1D5_SHIFT |
+ GPIO1D4_EMMC_D4 << GPIO1D4_SHIFT |
+ GPIO1D3_EMMC_D3 << GPIO1D3_SHIFT |
+ GPIO1D2_EMMC_D2 << GPIO1D2_SHIFT |
+ GPIO1D1_EMMC_D1 << GPIO1D1_SHIFT |
+ GPIO1D0_EMMC_D0 << GPIO1D0_SHIFT);
+ rk_clrsetreg(&grf->gpio2a_iomux,
+ GPIO2A4_MASK << GPIO2A4_SHIFT |
+ GPIO2A1_MASK << GPIO2A1_SHIFT,
+ GPIO2A4_EMMC_CMD << GPIO2A4_SHIFT |
+ GPIO2A1_EMMC_CLKOUT << GPIO2A1_SHIFT);
+ break;
+ case PERIPH_ID_SDCARD:
+ rk_clrsetreg(&grf->gpio1c_iomux, 0xffff,
+ GPIO1C5_MMC0_D3 << GPIO1C5_SHIFT |
+ GPIO1C4_MMC0_D2 << GPIO1C4_SHIFT |
+ GPIO1C3_MMC0_D1 << GPIO1C3_SHIFT |
+ GPIO1C2_MMC0_D0 << GPIO1C2_SHIFT |
+ GPIO1C1_MMC0_DETN << GPIO1C1_SHIFT |
+ GPIO1C0_MMC0_CLKOUT << GPIO1C0_SHIFT);
+ break;
+ }
+}
+
+static int rk3036_pinctrl_request(struct udevice *dev, int func, int flags)
+{
+ struct rk3036_pinctrl_priv *priv = dev_get_priv(dev);
+
+ debug("%s: func=%x, flags=%x\n", __func__, func, flags);
+ switch (func) {
+ case PERIPH_ID_PWM0:
+ case PERIPH_ID_PWM1:
+ case PERIPH_ID_PWM2:
+ case PERIPH_ID_PWM3:
+ pinctrl_rk3036_pwm_config(priv->grf, func);
+ break;
+ case PERIPH_ID_I2C0:
+ case PERIPH_ID_I2C1:
+ case PERIPH_ID_I2C2:
+ pinctrl_rk3036_i2c_config(priv->grf, func);
+ break;
+ case PERIPH_ID_SPI0:
+ pinctrl_rk3036_spi_config(priv->grf, flags);
+ break;
+ case PERIPH_ID_UART0:
+ case PERIPH_ID_UART1:
+ case PERIPH_ID_UART2:
+ pinctrl_rk3036_uart_config(priv->grf, func);
+ break;
+ case PERIPH_ID_SDMMC0:
+ case PERIPH_ID_SDMMC1:
+ pinctrl_rk3036_sdmmc_config(priv->grf, func);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int rk3036_pinctrl_get_periph_id(struct udevice *dev,
+ struct udevice *periph)
+{
+ u32 cell[3];
+ int ret;
+
+ ret = fdtdec_get_int_array(gd->fdt_blob, periph->of_offset,
+ "interrupts", cell, ARRAY_SIZE(cell));
+ if (ret < 0)
+ return -EINVAL;
+
+ switch (cell[1]) {
+ case 14:
+ return PERIPH_ID_SDCARD;
+ case 16:
+ return PERIPH_ID_EMMC;
+ case 20:
+ return PERIPH_ID_UART0;
+ case 21:
+ return PERIPH_ID_UART1;
+ case 22:
+ return PERIPH_ID_UART2;
+ case 23:
+ return PERIPH_ID_SPI0;
+ case 24:
+ return PERIPH_ID_I2C0;
+ case 25:
+ return PERIPH_ID_I2C1;
+ case 26:
+ return PERIPH_ID_I2C2;
+ case 30:
+ return PERIPH_ID_PWM0;
+ }
+ return -ENOENT;
+}
+
+static int rk3036_pinctrl_set_state_simple(struct udevice *dev,
+ struct udevice *periph)
+{
+ int func;
+
+ func = rk3036_pinctrl_get_periph_id(dev, periph);
+ if (func < 0)
+ return func;
+ return rk3036_pinctrl_request(dev, func, 0);
+}
+
+static struct pinctrl_ops rk3036_pinctrl_ops = {
+ .set_state_simple = rk3036_pinctrl_set_state_simple,
+ .request = rk3036_pinctrl_request,
+ .get_periph_id = rk3036_pinctrl_get_periph_id,
+};
+
+static int rk3036_pinctrl_probe(struct udevice *dev)
+{
+ struct rk3036_pinctrl_priv *priv = dev_get_priv(dev);
+
+ priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+ debug("%s: grf=%p\n", __func__, priv->grf);
+ return 0;
+}
+
+static const struct udevice_id rk3036_pinctrl_ids[] = {
+ { .compatible = "rockchip,rk3036-pinctrl" },
+ { }
+};
+
+U_BOOT_DRIVER(pinctrl_rk3036) = {
+ .name = "pinctrl_rk3036",
+ .id = UCLASS_PINCTRL,
+ .of_match = rk3036_pinctrl_ids,
+ .priv_auto_alloc_size = sizeof(struct rk3036_pinctrl_priv),
+ .ops = &rk3036_pinctrl_ops,
+ .probe = rk3036_pinctrl_probe,
+};
projects / u-boot / commitdiff