| /* |
| * (C) Copyright 2016 Rockchip Electronics Co., Ltd |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #include <common.h> |
| #include <dm.h> |
| #include <errno.h> |
| #include <syscon.h> |
| #include <asm/arch/clock.h> |
| #include <asm/arch/hardware.h> |
| #include <asm/arch/grf_rk3328.h> |
| #include <asm/arch/periph.h> |
| #include <asm/io.h> |
| #include <dm/pinctrl.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| struct rk3328_pinctrl_priv { |
| struct rk3328_grf_regs *grf; |
| }; |
| |
| static void pinctrl_rk3328_pwm_config(struct rk3328_grf_regs *grf, int pwm_id) |
| { |
| switch (pwm_id) { |
| case PERIPH_ID_PWM0: |
| rk_clrsetreg(&grf->gpio2a_iomux, |
| GPIO2A4_SEL_MASK, |
| GPIO2A4_PWM_0 << GPIO2A4_SEL_SHIFT); |
| break; |
| case PERIPH_ID_PWM1: |
| rk_clrsetreg(&grf->gpio2a_iomux, |
| GPIO2A5_SEL_MASK, |
| GPIO2A5_PWM_1 << GPIO2A5_SEL_SHIFT); |
| break; |
| case PERIPH_ID_PWM2: |
| rk_clrsetreg(&grf->gpio2a_iomux, |
| GPIO2A6_SEL_MASK, |
| GPIO2A6_PWM_2 << GPIO2A6_SEL_SHIFT); |
| break; |
| case PERIPH_ID_PWM3: |
| rk_clrsetreg(&grf->gpio2a_iomux, |
| GPIO2A2_SEL_MASK, |
| GPIO2A2_PWM_IR << GPIO2A2_SEL_SHIFT); |
| break; |
| default: |
| debug("pwm id = %d iomux error!\n", pwm_id); |
| break; |
| } |
| } |
| |
| static void pinctrl_rk3328_i2c_config(struct rk3328_grf_regs *grf, int i2c_id) |
| { |
| switch (i2c_id) { |
| case PERIPH_ID_I2C0: |
| rk_clrsetreg(&grf->gpio2d_iomux, |
| GPIO2D0_SEL_MASK | GPIO2D1_SEL_MASK, |
| GPIO2D0_I2C0_SCL << GPIO2D0_SEL_SHIFT | |
| GPIO2D1_I2C0_SDA << GPIO2D1_SEL_SHIFT); |
| break; |
| case PERIPH_ID_I2C1: |
| rk_clrsetreg(&grf->gpio2a_iomux, |
| GPIO2A4_SEL_MASK | GPIO2A5_SEL_MASK, |
| GPIO2A5_I2C1_SCL << GPIO2A5_SEL_SHIFT | |
| GPIO2A4_I2C1_SDA << GPIO2A4_SEL_SHIFT); |
| break; |
| case PERIPH_ID_I2C2: |
| rk_clrsetreg(&grf->gpio2bl_iomux, |
| GPIO2BL5_SEL_MASK | GPIO2BL6_SEL_MASK, |
| GPIO2BL6_I2C2_SCL << GPIO2BL6_SEL_SHIFT | |
| GPIO2BL5_I2C2_SDA << GPIO2BL5_SEL_SHIFT); |
| break; |
| case PERIPH_ID_I2C3: |
| rk_clrsetreg(&grf->gpio0a_iomux, |
| GPIO0A5_SEL_MASK | GPIO0A6_SEL_MASK, |
| GPIO0A5_I2C3_SCL << GPIO0A5_SEL_SHIFT | |
| GPIO0A6_I2C3_SDA << GPIO0A6_SEL_SHIFT); |
| break; |
| default: |
| debug("i2c id = %d iomux error!\n", i2c_id); |
| break; |
| } |
| } |
| |
| static void pinctrl_rk3328_lcdc_config(struct rk3328_grf_regs *grf, int lcd_id) |
| { |
| switch (lcd_id) { |
| case PERIPH_ID_LCDC0: |
| break; |
| default: |
| debug("lcdc id = %d iomux error!\n", lcd_id); |
| break; |
| } |
| } |
| |
| static int pinctrl_rk3328_spi_config(struct rk3328_grf_regs *grf, |
| enum periph_id spi_id, int cs) |
| { |
| u32 com_iomux = readl(&grf->com_iomux); |
| |
| if ((com_iomux & IOMUX_SEL_SPI_MASK) != |
| IOMUX_SEL_SPI_M0 << IOMUX_SEL_SPI_SHIFT) { |
| debug("driver do not support iomux other than m0\n"); |
| goto err; |
| } |
| |
| switch (spi_id) { |
| case PERIPH_ID_SPI0: |
| switch (cs) { |
| case 0: |
| rk_clrsetreg(&grf->gpio2bl_iomux, |
| GPIO2BL3_SEL_MASK, |
| GPIO2BL3_SPI_CSN0_M0 |
| << GPIO2BL3_SEL_SHIFT); |
| break; |
| case 1: |
| rk_clrsetreg(&grf->gpio2bl_iomux, |
| GPIO2BL4_SEL_MASK, |
| GPIO2BL4_SPI_CSN1_M0 |
| << GPIO2BL4_SEL_SHIFT); |
| break; |
| default: |
| goto err; |
| } |
| rk_clrsetreg(&grf->gpio2bl_iomux, |
| GPIO2BL0_SEL_MASK, |
| GPIO2BL0_SPI_CLK_TX_RX_M0 << GPIO2BL0_SEL_SHIFT); |
| break; |
| default: |
| goto err; |
| } |
| |
| return 0; |
| err: |
| debug("rkspi: periph%d cs=%d not supported", spi_id, cs); |
| return -ENOENT; |
| } |
| |
| static void pinctrl_rk3328_uart_config(struct rk3328_grf_regs *grf, int uart_id) |
| { |
| u32 com_iomux = readl(&grf->com_iomux); |
| |
| switch (uart_id) { |
| case PERIPH_ID_UART2: |
| break; |
| if (com_iomux & IOMUX_SEL_UART2_MASK) |
| rk_clrsetreg(&grf->gpio2a_iomux, |
| GPIO2A0_SEL_MASK | GPIO2A1_SEL_MASK, |
| GPIO2A0_UART2_TX_M1 << GPIO2A0_SEL_SHIFT | |
| GPIO2A1_UART2_RX_M1 << GPIO2A1_SEL_SHIFT); |
| |
| break; |
| case PERIPH_ID_UART0: |
| case PERIPH_ID_UART1: |
| case PERIPH_ID_UART3: |
| case PERIPH_ID_UART4: |
| default: |
| debug("uart id = %d iomux error!\n", uart_id); |
| break; |
| } |
| } |
| |
| static void pinctrl_rk3328_sdmmc_config(struct rk3328_grf_regs *grf, |
| int mmc_id) |
| { |
| u32 com_iomux = readl(&grf->com_iomux); |
| |
| switch (mmc_id) { |
| case PERIPH_ID_EMMC: |
| rk_clrsetreg(&grf->gpio0a_iomux, |
| GPIO0A7_SEL_MASK, |
| GPIO0A7_EMMC_DATA0 << GPIO0A7_SEL_SHIFT); |
| rk_clrsetreg(&grf->gpio2d_iomux, |
| GPIO2D4_SEL_MASK, |
| GPIO2D4_EMMC_DATA1234 << GPIO2D4_SEL_SHIFT); |
| rk_clrsetreg(&grf->gpio3c_iomux, |
| GPIO3C0_SEL_MASK, |
| GPIO3C0_EMMC_DATA567_PWR_CLK_RSTN_CMD |
| << GPIO3C0_SEL_SHIFT); |
| break; |
| case PERIPH_ID_SDCARD: |
| /* SDMMC_PWREN use GPIO and init as regulator-fiexed */ |
| if (com_iomux & IOMUX_SEL_SDMMC_MASK) |
| rk_clrsetreg(&grf->gpio0d_iomux, |
| GPIO0D6_SEL_MASK, |
| GPIO0D6_SDMMC0_PWRENM1 |
| << GPIO0D6_SEL_SHIFT); |
| else |
| rk_clrsetreg(&grf->gpio2a_iomux, |
| GPIO2A7_SEL_MASK, |
| GPIO2A7_SDMMC0_PWRENM0 |
| << GPIO2A7_SEL_SHIFT); |
| rk_clrsetreg(&grf->gpio1a_iomux, |
| GPIO1A0_SEL_MASK, |
| GPIO1A0_CARD_DATA_CLK_CMD_DETN |
| << GPIO1A0_SEL_SHIFT); |
| break; |
| default: |
| debug("mmc id = %d iomux error!\n", mmc_id); |
| break; |
| } |
| } |
| |
| static int rk3328_pinctrl_request(struct udevice *dev, int func, int flags) |
| { |
| struct rk3328_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_rk3328_pwm_config(priv->grf, func); |
| break; |
| case PERIPH_ID_I2C0: |
| case PERIPH_ID_I2C1: |
| case PERIPH_ID_I2C2: |
| case PERIPH_ID_I2C3: |
| pinctrl_rk3328_i2c_config(priv->grf, func); |
| break; |
| case PERIPH_ID_SPI0: |
| pinctrl_rk3328_spi_config(priv->grf, func, flags); |
| break; |
| case PERIPH_ID_UART0: |
| case PERIPH_ID_UART1: |
| case PERIPH_ID_UART2: |
| case PERIPH_ID_UART3: |
| case PERIPH_ID_UART4: |
| pinctrl_rk3328_uart_config(priv->grf, func); |
| break; |
| case PERIPH_ID_LCDC0: |
| case PERIPH_ID_LCDC1: |
| pinctrl_rk3328_lcdc_config(priv->grf, func); |
| break; |
| case PERIPH_ID_SDMMC0: |
| case PERIPH_ID_SDMMC1: |
| pinctrl_rk3328_sdmmc_config(priv->grf, func); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int rk3328_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 49: |
| return PERIPH_ID_SPI0; |
| case 50: |
| return PERIPH_ID_PWM0; |
| case 36: |
| return PERIPH_ID_I2C0; |
| case 37: /* Note strange order */ |
| return PERIPH_ID_I2C1; |
| case 38: |
| return PERIPH_ID_I2C2; |
| case 39: |
| return PERIPH_ID_I2C3; |
| case 12: |
| return PERIPH_ID_SDCARD; |
| case 14: |
| return PERIPH_ID_EMMC; |
| } |
| |
| return -ENOENT; |
| } |
| |
| static int rk3328_pinctrl_set_state_simple(struct udevice *dev, |
| struct udevice *periph) |
| { |
| int func; |
| |
| func = rk3328_pinctrl_get_periph_id(dev, periph); |
| if (func < 0) |
| return func; |
| |
| return rk3328_pinctrl_request(dev, func, 0); |
| } |
| |
| static struct pinctrl_ops rk3328_pinctrl_ops = { |
| .set_state_simple = rk3328_pinctrl_set_state_simple, |
| .request = rk3328_pinctrl_request, |
| .get_periph_id = rk3328_pinctrl_get_periph_id, |
| }; |
| |
| static int rk3328_pinctrl_probe(struct udevice *dev) |
| { |
| struct rk3328_pinctrl_priv *priv = dev_get_priv(dev); |
| int ret = 0; |
| |
| priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); |
| debug("%s: grf=%p\n", __func__, priv->grf); |
| |
| return ret; |
| } |
| |
| static const struct udevice_id rk3328_pinctrl_ids[] = { |
| { .compatible = "rockchip,rk3328-pinctrl" }, |
| { } |
| }; |
| |
| U_BOOT_DRIVER(pinctrl_rk3328) = { |
| .name = "rockchip_rk3328_pinctrl", |
| .id = UCLASS_PINCTRL, |
| .of_match = rk3328_pinctrl_ids, |
| .priv_auto_alloc_size = sizeof(struct rk3328_pinctrl_priv), |
| .ops = &rk3328_pinctrl_ops, |
| .bind = dm_scan_fdt_dev, |
| .probe = rk3328_pinctrl_probe, |
| }; |