Add a driver which supports pin multiplexing setup for the most commonly used peripherals.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v4: - Add a set_state_simple() method - Rename pinctrl.h to dm/pinctrl.h
Changes in v3: None Changes in v2: None
drivers/pinctrl/Kconfig | 9 + drivers/pinctrl/Makefile | 1 + drivers/pinctrl/rockchip/Makefile | 8 + drivers/pinctrl/rockchip/pinctrl_rk3288.c | 441 ++++++++++++++++++++++++++++++ 4 files changed, 459 insertions(+) create mode 100644 drivers/pinctrl/rockchip/Makefile create mode 100644 drivers/pinctrl/rockchip/pinctrl_rk3288.c
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index 30617f0..6696555 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -58,6 +58,15 @@ config SPL_PINCONF
if PINCTRL || SPL_PINCTRL
+config ROCKCHIP_PINCTRL + bool "Rockchip pin control driver" + depends on DM + help + Support pin multiplexing control on Rockchip SoCs. 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"
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile index 35decf4..f537df4 100644 --- a/drivers/pinctrl/Makefile +++ b/drivers/pinctrl/Makefile @@ -1,4 +1,5 @@ obj-y += pinctrl-uclass.o obj-$(CONFIG_$(SPL_)PINCTRL_GENERIC) += pinctrl-generic.o
+obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/ obj-$(CONFIG_PINCTRL_SANDBOX) += pinctrl-sandbox.o diff --git a/drivers/pinctrl/rockchip/Makefile b/drivers/pinctrl/rockchip/Makefile new file mode 100644 index 0000000..251bace --- /dev/null +++ b/drivers/pinctrl/rockchip/Makefile @@ -0,0 +1,8 @@ +# +# Copyright (c) 2015 Google, Inc +# Written by Simon Glass sjg@chromium.org +# +# SPDX-License-Identifier: GPL-2.0+ +# + +obj-$(CONFIG_ROCKCHIP_PINCTRL) += pinctrl_rk3288.o diff --git a/drivers/pinctrl/rockchip/pinctrl_rk3288.c b/drivers/pinctrl/rockchip/pinctrl_rk3288.c new file mode 100644 index 0000000..5205498 --- /dev/null +++ b/drivers/pinctrl/rockchip/pinctrl_rk3288.c @@ -0,0 +1,441 @@ +/* + * Pinctrl driver for Rockchip SoCs + * Copyright (c) 2015 Google, Inc + * Written by Simon Glass sjg@chromium.org + * + * 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_rk3288.h> +#include <asm/arch/hardware.h> +#include <asm/arch/periph.h> +#include <asm/arch/pmu_rk3288.h> +#include <dm/pinctrl.h> + +DECLARE_GLOBAL_DATA_PTR; + +struct rk3288_pinctrl_priv { + struct rk3288_grf *grf; + struct rk3288_pmu *pmu; +}; + +static void pinctrl_rk3288_pwm_config(struct rk3288_grf *grf, int pwm_id) +{ + switch (pwm_id) { + case PERIPH_ID_PWM0: + rk_clrsetreg(&grf->gpio7a_iomux, GPIO7A0_MASK << GPIO7A0_SHIFT, + GPIO7A0_PWM_0 << GPIO7A0_SHIFT); + break; + case PERIPH_ID_PWM1: + rk_clrsetreg(&grf->gpio7a_iomux, GPIO7A1_MASK << GPIO7A1_SHIFT, + GPIO7A1_PWM_1 << GPIO7A1_SHIFT); + break; + case PERIPH_ID_PWM2: + rk_clrsetreg(&grf->gpio7a_iomux, GPIO7C6_MASK << GPIO7C6_SHIFT, + GPIO7C6_PWM_2 << GPIO7C6_SHIFT); + break; + case PERIPH_ID_PWM3: + rk_clrsetreg(&grf->gpio7a_iomux, GPIO7C7_MASK << GPIO7C6_SHIFT, + GPIO7C7_PWM_3 << GPIO7C7_SHIFT); + break; + default: + debug("pwm id = %d iomux error!\n", pwm_id); + break; + } +} + +static void pinctrl_rk3288_i2c_config(struct rk3288_grf *grf, + struct rk3288_pmu *pmu, int i2c_id) +{ + switch (i2c_id) { + case PERIPH_ID_I2C0: + clrsetbits_le32(&pmu->gpio0b_iomux, + GPIO0_B7_MASK << GPIO0_B7_SHIFT, + GPIO0_B7_I2C0PMU_SDA << GPIO0_B7_SHIFT); + clrsetbits_le32(&pmu->gpio0b_iomux, + GPIO0_C0_MASK << GPIO0_C0_SHIFT, + GPIO0_C0_I2C0PMU_SCL << GPIO0_C0_SHIFT); + break; + case PERIPH_ID_I2C1: + rk_clrsetreg(&grf->gpio8a_iomux, + GPIO8A4_MASK << GPIO8A4_SHIFT | + GPIO8A5_MASK << GPIO8A5_SHIFT, + GPIO8A4_I2C2SENSOR_SDA << GPIO8A4_SHIFT | + GPIO8A5_I2C2SENSOR_SCL << GPIO8A5_SHIFT); + break; + case PERIPH_ID_I2C2: + rk_clrsetreg(&grf->gpio6b_iomux, + GPIO6B1_MASK << GPIO6B1_SHIFT | + GPIO6B2_MASK << GPIO6B2_SHIFT, + GPIO6B1_I2C1AUDIO_SDA << GPIO6B1_SHIFT | + GPIO6B2_I2C1AUDIO_SCL << GPIO6B2_SHIFT); + break; + case PERIPH_ID_I2C3: + rk_clrsetreg(&grf->gpio2c_iomux, + GPIO2C1_MASK << GPIO2C1_SHIFT | + GPIO2C0_MASK << GPIO2C0_SHIFT, + GPIO2C1_I2C3CAM_SDA << GPIO2C1_SHIFT | + GPIO2C0_I2C3CAM_SCL << GPIO2C0_SHIFT); + break; + case PERIPH_ID_I2C4: + rk_clrsetreg(&grf->gpio7cl_iomux, + GPIO7C1_MASK << GPIO7C1_SHIFT | + GPIO7C2_MASK << GPIO7C2_SHIFT, + GPIO7C1_I2C4TP_SDA << GPIO7C1_SHIFT | + GPIO7C2_I2C4TP_SCL << GPIO7C2_SHIFT); + break; + case PERIPH_ID_I2C5: + rk_clrsetreg(&grf->gpio7cl_iomux, + GPIO7C3_MASK << GPIO7C3_SHIFT, + GPIO7C3_I2C5HDMI_SDA << GPIO7C3_SHIFT); + rk_clrsetreg(&grf->gpio7ch_iomux, + GPIO7C4_MASK << GPIO7C4_SHIFT, + GPIO7C4_I2C5HDMI_SCL << GPIO7C4_SHIFT); + break; + default: + debug("i2c id = %d iomux error!\n", i2c_id); + break; + } +} + +static void pinctrl_rk3288_lcdc_config(struct rk3288_grf *grf, int lcd_id) +{ + switch (lcd_id) { + case PERIPH_ID_LCDC0: + rk_clrsetreg(&grf->gpio1d_iomux, + GPIO1D3_MASK << GPIO1D0_SHIFT | + GPIO1D2_MASK << GPIO1D2_SHIFT | + GPIO1D1_MASK << GPIO1D1_SHIFT | + GPIO1D0_MASK << GPIO1D0_SHIFT, + GPIO1D3_LCDC0_DCLK << GPIO1D3_SHIFT | + GPIO1D2_LCDC0_DEN << GPIO1D2_SHIFT | + GPIO1D1_LCDC0_VSYNC << GPIO1D1_SHIFT | + GPIO1D0_LCDC0_HSYNC << GPIO1D0_SHIFT); + break; + default: + debug("lcdc id = %d iomux error!\n", lcd_id); + break; + } +} + +static int pinctrl_rk3288_spi_config(struct rk3288_grf *grf, + enum periph_id spi_id, int cs) +{ + switch (spi_id) { + case PERIPH_ID_SPI0: + switch (cs) { + case 0: + rk_clrsetreg(&grf->gpio5b_iomux, + GPIO5B5_MASK << GPIO5B5_SHIFT, + GPIO5B5_SPI0_CSN0 << GPIO5B5_SHIFT); + break; + case 1: + rk_clrsetreg(&grf->gpio5c_iomux, + GPIO5C0_MASK << GPIO5C0_SHIFT, + GPIO5C0_SPI0_CSN1 << GPIO5C0_SHIFT); + break; + default: + goto err; + } + rk_clrsetreg(&grf->gpio5b_iomux, + GPIO5B7_MASK << GPIO5B7_SHIFT | + GPIO5B6_MASK << GPIO5B6_SHIFT | + GPIO5B4_MASK << GPIO5B4_SHIFT, + GPIO5B7_SPI0_RXD << GPIO5B7_SHIFT | + GPIO5B6_SPI0_TXD << GPIO5B6_SHIFT | + GPIO5B4_SPI0_CLK << GPIO5B4_SHIFT); + break; + case PERIPH_ID_SPI1: + if (cs != 0) + goto err; + rk_clrsetreg(&grf->gpio7b_iomux, + GPIO7B6_MASK << GPIO7B6_SHIFT | + GPIO7B7_MASK << GPIO7B7_SHIFT | + GPIO7B5_MASK << GPIO7B5_SHIFT | + GPIO7B4_MASK << GPIO7B4_SHIFT, + GPIO7B6_SPI1_RXD << GPIO7B6_SHIFT | + GPIO7B7_SPI1_TXD << GPIO7B7_SHIFT | + GPIO7B5_SPI1_CSN0 << GPIO7B5_SHIFT | + GPIO7B4_SPI1_CLK << GPIO7B4_SHIFT); + break; + case PERIPH_ID_SPI2: + switch (cs) { + case 0: + rk_clrsetreg(&grf->gpio8a_iomux, + GPIO8A7_MASK << GPIO8A7_SHIFT, + GPIO8A7_SPI2_CSN0 << GPIO8A7_SHIFT); + break; + case 1: + rk_clrsetreg(&grf->gpio8a_iomux, + GPIO8A3_MASK << GPIO8A3_SHIFT, + GPIO8A3_SPI2_CSN1 << GPIO8A3_SHIFT); + break; + default: + goto err; + } + rk_clrsetreg(&grf->gpio8b_iomux, + GPIO8B1_MASK << GPIO8B1_SHIFT | + GPIO8B0_MASK << GPIO8B0_SHIFT, + GPIO8B1_SPI2_TXD << GPIO8B1_SHIFT | + GPIO8B0_SPI2_RXD << GPIO8B0_SHIFT); + rk_clrsetreg(&grf->gpio8a_iomux, + GPIO8A6_MASK << GPIO8A6_SHIFT, + GPIO8A6_SPI2_CLK << GPIO8A6_SHIFT); + break; + default: + goto err; + } + + return 0; +err: + debug("rkspi: periph%d cs=%d not supported", spi_id, cs); + return -ENOENT; +} + +static void pinctrl_rk3288_uart_config(struct rk3288_grf *grf, int uart_id) +{ + switch (uart_id) { + case PERIPH_ID_UART_BT: + rk_clrsetreg(&grf->gpio4c_iomux, + GPIO4C3_MASK << GPIO4C3_SHIFT | + GPIO4C2_MASK << GPIO4C2_SHIFT | + GPIO4C1_MASK << GPIO4C1_SHIFT | + GPIO4C0_MASK << GPIO4C0_SHIFT, + GPIO4C3_UART0BT_RTSN << GPIO4C3_SHIFT | + GPIO4C2_UART0BT_CTSN << GPIO4C2_SHIFT | + GPIO4C1_UART0BT_SOUT << GPIO4C1_SHIFT | + GPIO4C0_UART0BT_SIN << GPIO4C0_SHIFT); + break; + case PERIPH_ID_UART_BB: + rk_clrsetreg(&grf->gpio5b_iomux, + GPIO5B3_MASK << GPIO5B3_SHIFT | + GPIO5B2_MASK << GPIO5B2_SHIFT | + GPIO5B1_MASK << GPIO5B1_SHIFT | + GPIO5B0_MASK << GPIO5B0_SHIFT, + GPIO5B3_UART1BB_RTSN << GPIO5B3_SHIFT | + GPIO5B2_UART1BB_CTSN << GPIO5B2_SHIFT | + GPIO5B1_UART1BB_SOUT << GPIO5B1_SHIFT | + GPIO5B0_UART1BB_SIN << GPIO5B0_SHIFT); + break; + case PERIPH_ID_UART_DBG: + rk_clrsetreg(&grf->gpio7ch_iomux, + GPIO7C7_MASK << GPIO7C7_SHIFT | + GPIO7C6_MASK << GPIO7C6_SHIFT, + GPIO7C7_UART2DBG_SOUT << GPIO7C7_SHIFT | + GPIO7C6_UART2DBG_SIN << GPIO7C6_SHIFT); + break; + case PERIPH_ID_UART_GPS: + rk_clrsetreg(&grf->gpio7b_iomux, + GPIO7B2_MASK << GPIO7B2_SHIFT | + GPIO7B1_MASK << GPIO7B1_SHIFT | + GPIO7B0_MASK << GPIO7B0_SHIFT, + GPIO7B2_UART3GPS_RTSN << GPIO7B2_SHIFT | + GPIO7B1_UART3GPS_CTSN << GPIO7B1_SHIFT | + GPIO7B0_UART3GPS_SOUT << GPIO7B0_SHIFT); + rk_clrsetreg(&grf->gpio7a_iomux, + GPIO7A7_MASK << GPIO7A7_SHIFT, + GPIO7A7_UART3GPS_SIN << GPIO7A7_SHIFT); + break; + case PERIPH_ID_UART_EXP: + rk_clrsetreg(&grf->gpio5b_iomux, + GPIO5B5_MASK << GPIO5B5_SHIFT | + GPIO5B4_MASK << GPIO5B4_SHIFT | + GPIO5B6_MASK << GPIO5B6_SHIFT | + GPIO5B7_MASK << GPIO5B7_SHIFT, + GPIO5B5_UART4EXP_RTSN << GPIO5B5_SHIFT | + GPIO5B4_UART4EXP_CTSN << GPIO5B4_SHIFT | + GPIO5B6_UART4EXP_SOUT << GPIO5B6_SHIFT | + GPIO5B7_UART4EXP_SIN << GPIO5B7_SHIFT); + break; + default: + debug("uart id = %d iomux error!\n", uart_id); + break; + } +} + +static void pinctrl_rk3288_sdmmc_config(struct rk3288_grf *grf, int mmc_id) +{ + switch (mmc_id) { + case PERIPH_ID_EMMC: + rk_clrsetreg(&grf->gpio3a_iomux, 0xffff, + GPIO3A7_EMMC_DATA7 << GPIO3A7_SHIFT | + GPIO3A6_EMMC_DATA6 << GPIO3A6_SHIFT | + GPIO3A5_EMMC_DATA5 << GPIO3A5_SHIFT | + GPIO3A4_EMMC_DATA4 << GPIO3A4_SHIFT | + GPIO3A3_EMMC_DATA3 << GPIO3A3_SHIFT | + GPIO3A2_EMMC_DATA2 << GPIO3A2_SHIFT | + GPIO3A1_EMMC_DATA1 << GPIO3A1_SHIFT | + GPIO3A0_EMMC_DATA0 << GPIO3A0_SHIFT); + rk_clrsetreg(&grf->gpio3b_iomux, GPIO3B1_MASK << GPIO3B1_SHIFT, + GPIO3B1_EMMC_PWREN << GPIO3B1_SHIFT); + rk_clrsetreg(&grf->gpio3c_iomux, + GPIO3C0_MASK << GPIO3C0_SHIFT, + GPIO3C0_EMMC_CMD << GPIO3C0_SHIFT); + break; + case PERIPH_ID_SDCARD: + rk_clrsetreg(&grf->gpio6c_iomux, 0xffff, + GPIO6C6_SDMMC0_DECTN << GPIO6C6_SHIFT | + GPIO6C5_SDMMC0_CMD << GPIO6C5_SHIFT | + GPIO6C4_SDMMC0_CLKOUT << GPIO6C4_SHIFT | + GPIO6C3_SDMMC0_DATA3 << GPIO6C3_SHIFT | + GPIO6C2_SDMMC0_DATA2 << GPIO6C2_SHIFT | + GPIO6C1_SDMMC0_DATA1 << GPIO6C1_SHIFT | + GPIO6C0_SDMMC0_DATA0 << GPIO6C0_SHIFT); + + /* use sdmmc0 io, disable JTAG function */ + rk_clrsetreg(&grf->soc_con0, 1 << GRF_FORCE_JTAG_SHIFT, 0); + break; + default: + debug("mmc id = %d iomux error!\n", mmc_id); + break; + } +} + +static void pinctrl_rk3288_hdmi_config(struct rk3288_grf *grf, int hdmi_id) +{ + switch (hdmi_id) { + case PERIPH_ID_HDMI: + rk_clrsetreg(&grf->gpio7cl_iomux, GPIO7C3_MASK << GPIO7C3_SHIFT, + GPIO7C3_EDPHDMII2C_SDA << GPIO7C3_SHIFT); + rk_clrsetreg(&grf->gpio7ch_iomux, GPIO7C4_MASK << GPIO7C4_SHIFT, + GPIO7C4_EDPHDMII2C_SCL << GPIO7C4_SHIFT); + break; + default: + debug("hdmi id = %d iomux error!\n", hdmi_id); + break; + } +} + +static int rk3288_pinctrl_request(struct udevice *dev, int func, int flags) +{ + struct rk3288_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: + case PERIPH_ID_PWM4: + pinctrl_rk3288_pwm_config(priv->grf, func); + break; + case PERIPH_ID_I2C0: + case PERIPH_ID_I2C1: + case PERIPH_ID_I2C2: + case PERIPH_ID_I2C3: + case PERIPH_ID_I2C4: + case PERIPH_ID_I2C5: + pinctrl_rk3288_i2c_config(priv->grf, priv->pmu, func); + break; + case PERIPH_ID_SPI0: + case PERIPH_ID_SPI1: + case PERIPH_ID_SPI2: + pinctrl_rk3288_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_rk3288_uart_config(priv->grf, func); + break; + case PERIPH_ID_LCDC0: + case PERIPH_ID_LCDC1: + pinctrl_rk3288_lcdc_config(priv->grf, func); + break; + case PERIPH_ID_SDMMC0: + case PERIPH_ID_SDMMC1: + pinctrl_rk3288_sdmmc_config(priv->grf, func); + break; + case PERIPH_ID_HDMI: + pinctrl_rk3288_hdmi_config(priv->grf, func); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int rk3288_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 44: + return PERIPH_ID_SPI0; + case 45: + return PERIPH_ID_SPI1; + case 46: + return PERIPH_ID_SPI2; + case 60: + return PERIPH_ID_I2C0; + case 62: /* Note strange order */ + return PERIPH_ID_I2C1; + case 61: + return PERIPH_ID_I2C2; + case 63: + return PERIPH_ID_I2C3; + case 64: + return PERIPH_ID_I2C4; + case 65: + return PERIPH_ID_I2C5; + } + + return -ENOENT; +} + +static int rk3288_pinctrl_set_state_simple(struct udevice *dev, + struct udevice *periph) +{ + int func; + + func = rk3288_pinctrl_get_periph_id(dev, periph); + if (func < 0) + return func; + return rk3288_pinctrl_request(dev, func, 0); +} + +static struct pinctrl_ops rk3288_pinctrl_ops = { + .set_state_simple = rk3288_pinctrl_set_state_simple, + .request = rk3288_pinctrl_request, + .get_periph_id = rk3288_pinctrl_get_periph_id, +}; + +static int rk3288_pinctrl_probe(struct udevice *dev) +{ + struct rk3288_pinctrl_priv *priv = dev_get_priv(dev); + + priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); + priv->pmu = syscon_get_first_range(ROCKCHIP_SYSCON_PMU); + debug("%s: grf=%p, pmu=%p\n", __func__, priv->grf, priv->pmu); + + return 0; +} + +static const struct udevice_id rk3288_pinctrl_ids[] = { + { .compatible = "rockchip,rk3288-pinctrl" }, + { } +}; + +U_BOOT_DRIVER(pinctrl_rk3288) = { + .name = "pinctrl_rk3288", + .id = UCLASS_PINCTRL, + .of_match = rk3288_pinctrl_ids, + .priv_auto_alloc_size = sizeof(struct rk3288_pinctrl_priv), + .ops = &rk3288_pinctrl_ops, + .probe = rk3288_pinctrl_probe, +};