Add driver supporting pin multiplexing on rk3066 platform.
Signed-off-by: Paweł Jarosz paweljarosz3691@gmail.com Acked-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com --- Changes since v1: - updated to shifted masks - added nand support
Changes since v2: - none
arch/arm/include/asm/arch-rockchip/periph.h | 1 + drivers/pinctrl/Kconfig | 9 + drivers/pinctrl/rockchip/Makefile | 1 + drivers/pinctrl/rockchip/pinctrl_rk3066.c | 340 ++++++++++++++++++++++++++++ 4 files changed, 351 insertions(+) create mode 100644 drivers/pinctrl/rockchip/pinctrl_rk3066.c
diff --git a/arch/arm/include/asm/arch-rockchip/periph.h b/arch/arm/include/asm/arch-rockchip/periph.h index 9f4bc2e..6c8c77d 100644 --- a/arch/arm/include/asm/arch-rockchip/periph.h +++ b/arch/arm/include/asm/arch-rockchip/periph.h @@ -43,6 +43,7 @@ enum periph_id { PERIPH_ID_HDMI, PERIPH_ID_GMAC, PERIPH_ID_SFC, + PERIPH_ID_NAND,
PERIPH_ID_COUNT,
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index bcbe4a1..c9eb49d 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -168,6 +168,15 @@ config PINCTRL_ROCKCHIP_RK3036 the GPIO definitions and pin control functions for each available multiplex function.
+config PINCTRL_ROCKCHIP_RK3066 + bool "Rockchip rk3066 pin control driver" + depends on DM + help + Support pin multiplexing control on Rockchip rk3066 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_ROCKCHIP_RK3188 bool "Rockchip rk3188 pin control driver" depends on DM diff --git a/drivers/pinctrl/rockchip/Makefile b/drivers/pinctrl/rockchip/Makefile index 5251771..65923f9 100644 --- a/drivers/pinctrl/rockchip/Makefile +++ b/drivers/pinctrl/rockchip/Makefile @@ -6,6 +6,7 @@ #
obj-$(CONFIG_PINCTRL_ROCKCHIP_RK3036) += pinctrl_rk3036.o +obj-$(CONFIG_PINCTRL_ROCKCHIP_RK3066) += pinctrl_rk3066.o obj-$(CONFIG_PINCTRL_ROCKCHIP_RK3188) += pinctrl_rk3188.o obj-$(CONFIG_PINCTRL_ROCKCHIP_RK322X) += pinctrl_rk322x.o obj-$(CONFIG_PINCTRL_ROCKCHIP_RK3288) += pinctrl_rk3288.o diff --git a/drivers/pinctrl/rockchip/pinctrl_rk3066.c b/drivers/pinctrl/rockchip/pinctrl_rk3066.c new file mode 100644 index 0000000..79e0a54 --- /dev/null +++ b/drivers/pinctrl/rockchip/pinctrl_rk3066.c @@ -0,0 +1,340 @@ +/* + * Pinctrl driver for Rockchip 3066 SoCs + * (C) Copyright 2017 Paweł Jarosz paweljarosz3691@gmail.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <dm.h> +#include <dm/device.h> +#include <errno.h> +#include <syscon.h> +#include <asm/io.h> +#include <asm/arch/clock.h> +#include <asm/arch/grf_rk3066.h> +#include <asm/arch/hardware.h> +#include <asm/arch/periph.h> +#include <dm/pinctrl.h> + +DECLARE_GLOBAL_DATA_PTR; + +struct rk3066_pinctrl_priv { + struct rk3066_grf *grf; +}; + +static void pinctrl_rk3066_pwm_config(struct rk3066_grf *grf, int pwm_id) +{ + switch (pwm_id) { + case PERIPH_ID_PWM0: + rk_clrsetreg(&grf->gpio0a_iomux, GPIO0A3_MASK, + GPIO0A3_PWM0 << GPIO0A3_SHIFT); + break; + case PERIPH_ID_PWM1: + rk_clrsetreg(&grf->gpio0a_iomux, GPIO0A4_MASK, + GPIO0A4_PWM1 << GPIO0A4_SHIFT); + break; + case PERIPH_ID_PWM2: + rk_clrsetreg(&grf->gpio0d_iomux, GPIO0D6_MASK, + GPIO0D6_PWM2 << GPIO0D6_SHIFT); + break; + case PERIPH_ID_PWM3: + rk_clrsetreg(&grf->gpio0d_iomux, GPIO0D7_MASK, + GPIO0D7_PWM3 << GPIO0D7_SHIFT); + break; + default: + debug("pwm id = %d iomux error!\n", pwm_id); + break; + } +} + +static void pinctrl_rk3066_i2c_config(struct rk3066_grf *grf, int i2c_id) +{ + switch (i2c_id) { + case PERIPH_ID_I2C0: + rk_clrsetreg(&grf->gpio2d_iomux, + GPIO2D4_MASK | GPIO2D5_MASK, + GPIO2D4_I2C0_SDA << GPIO2D4_SHIFT | + GPIO2D5_I2C0_SCL << GPIO2D5_SHIFT); + rk_clrsetreg(&grf->soc_con1, 1 << RKI2C0_SEL_SHIFT, + 1 << RKI2C0_SEL_SHIFT); + break; + case PERIPH_ID_I2C1: + rk_clrsetreg(&grf->gpio2d_iomux, + GPIO2D6_MASK | GPIO2D7_MASK, + GPIO2D6_I2C1_SDA << GPIO2D6_SHIFT | + GPIO2D7_I2C1_SCL << GPIO2D7_SHIFT); + rk_clrsetreg(&grf->soc_con1, 1 << RKI2C1_SEL_SHIFT, + 1 << RKI2C1_SEL_SHIFT); + break; + case PERIPH_ID_I2C2: + rk_clrsetreg(&grf->gpio3a_iomux, + GPIO3A1_MASK | GPIO3A0_MASK, + GPIO3A1_I2C2_SCL << GPIO3A1_SHIFT | + GPIO3A0_I2C2_SDA << GPIO3A0_SHIFT); + rk_clrsetreg(&grf->soc_con1, 1 << RKI2C2_SEL_SHIFT, + 1 << RKI2C2_SEL_SHIFT); + case PERIPH_ID_I2C3: + rk_clrsetreg(&grf->gpio3a_iomux, + GPIO3A3_MASK | GPIO3A2_MASK, + GPIO3A3_I2C3_SCL << GPIO3A3_SHIFT | + GPIO3A2_I2C3_SDA << GPIO3A2_SHIFT); + rk_clrsetreg(&grf->soc_con1, 1 << RKI2C3_SEL_SHIFT, + 1 << RKI2C3_SEL_SHIFT); + case PERIPH_ID_I2C4: + rk_clrsetreg(&grf->gpio3a_iomux, + GPIO3A5_MASK | GPIO3A4_MASK, + GPIO3A5_I2C4_SCL << GPIO3A5_SHIFT | + GPIO3A4_I2C4_SDA << GPIO3A4_SHIFT); + rk_clrsetreg(&grf->soc_con1, 1 << RKI2C4_SEL_SHIFT, + 1 << RKI2C4_SEL_SHIFT); + break; + } +} + +static void pinctrl_rk3066_spi_config(struct rk3066_grf *grf, int spi_id, int cs) +{ + switch (spi_id) { + case PERIPH_ID_SPI0: + rk_clrsetreg(&grf->gpio1a_iomux, + GPIO1A7_MASK | GPIO1A6_MASK | GPIO1A5_MASK, + GPIO1A7_SPI0_TXD << GPIO1A7_SHIFT | + GPIO1A6_SPI0_RXD << GPIO1A6_SHIFT | + GPIO1A5_SPI0_CLK << GPIO1A5_SHIFT); + if(cs == 0) + rk_clrsetreg(&grf->gpio1a_iomux, + GPIO1A4_MASK, + GPIO1A4_SPI0_CSN0 << GPIO1A4_SHIFT); + else + rk_clrsetreg(&grf->gpio4b_iomux, + GPIO4B7_MASK, + GPIO4B7_SPI0_CSN1 << GPIO4B7_SHIFT); + break; + case PERIPH_ID_SPI1: + rk_clrsetreg(&grf->gpio2c_iomux, + GPIO2C5_MASK | GPIO2C6_MASK | GPIO2C3_MASK, + GPIO2C5_SPI1_TXD << GPIO2C5_SHIFT | + GPIO2C6_SPI1_RXD << GPIO2C6_SHIFT | + GPIO2C3_SPI1_CLK << GPIO2C3_SHIFT); + if(cs == 0) + rk_clrsetreg(&grf->gpio2c_iomux, + GPIO2C4_MASK, + GPIO2C4_SPI1_CSN0 << GPIO2C4_SHIFT); + else + rk_clrsetreg(&grf->gpio2c_iomux, + GPIO2C7_MASK, + GPIO2C7_SPI1_CSN1 << GPIO2C7_SHIFT); + break; + } +} + +static void pinctrl_rk3066_uart_config(struct rk3066_grf *grf, int uart_id) +{ + switch (uart_id) { + case PERIPH_ID_UART0: + rk_clrsetreg(&grf->gpio1a_iomux, + GPIO1A2_MASK | GPIO1A3_MASK | + GPIO1A0_MASK | GPIO1A1_MASK, + GPIO1A2_UART0_CTS_N << GPIO1A2_SHIFT | + GPIO1A3_UART0_RTS_N << GPIO1A3_SHIFT | + GPIO1A0_UART0_SIN << GPIO1A0_SHIFT | + GPIO1A1_UART0_SOUT << GPIO1A1_SHIFT); + break; + case PERIPH_ID_UART1: + rk_clrsetreg(&grf->gpio1a_iomux, + GPIO1A7_MASK | GPIO1A6_MASK | + GPIO1A5_MASK | GPIO1A4_MASK, + GPIO1A7_UART1_RTS_N << GPIO1A7_SHIFT | + GPIO1A6_UART1_CTS_N << GPIO1A6_SHIFT | + GPIO1A5_UART1_SOUT << GPIO1A5_SHIFT | + GPIO1A4_UART1_SIN << GPIO1A4_SHIFT); + break; + case PERIPH_ID_UART2: + rk_clrsetreg(&grf->gpio1b_iomux, + GPIO1B1_MASK | GPIO1B0_MASK, + GPIO1B1_UART2_SOUT << GPIO1B1_SHIFT | + GPIO1B0_UART2_SIN << GPIO1B0_SHIFT); + break; + case PERIPH_ID_UART3: + rk_clrsetreg(&grf->gpio3d_iomux, + GPIO3D6_MASK | GPIO3D5_MASK | + GPIO3D4_MASK | GPIO3D3_MASK, + GPIO3D6_UART3_RTS_N << GPIO3D6_SHIFT | + GPIO3D5_UART3_CTS_N << GPIO3D5_SHIFT | + GPIO3D4_UART3_SOUT << GPIO3D4_SHIFT | + GPIO3D3_UART3_SIN << GPIO3D3_SHIFT); + break; + } +} + +static void pinctrl_rk3066_sdmmc_config(struct rk3066_grf *grf, int mmc_id) +{ + switch (mmc_id) { + case PERIPH_ID_EMMC: + rk_clrsetreg(&grf->soc_con0, + EMMC_FLASH_SEL_MASK, + 1 << EMMC_FLASH_SEL_SHIFT); + rk_clrsetreg(&grf->gpio3d_iomux, + GPIO3D7_MASK, + GPIO3D7_EMMC_CLKOUT << GPIO3D7_SHIFT); + rk_clrsetreg(&grf->gpio4b_iomux, + GPIO4B2_MASK | GPIO4B1_MASK, + GPIO4B2_EMMC_RSTN_OUT << GPIO4B2_SHIFT | + GPIO4B1_EMMC_CMD << GPIO4B1_SHIFT); + break; + case PERIPH_ID_SDCARD: + rk_clrsetreg(&grf->gpio3b_iomux, 0xffff, + GPIO3B7_SDMMC0_WRITE_PRT << GPIO3B7_SHIFT | + GPIO3B6_SDMMC0_DETECT_N << GPIO3B6_SHIFT | + GPIO3B5_SDMMC0_DATA3 << GPIO3B5_SHIFT | + GPIO3B4_SDMMC0_DATA2 << GPIO3B4_SHIFT | + GPIO3B3_SDMMC0_DATA1 << GPIO3B3_SHIFT | + GPIO3B2_SDMMC0_DATA0 << GPIO3B2_SHIFT | + GPIO3B1_SDMMC0_CMD << GPIO3B1_SHIFT | + GPIO3B0_SDMMC0_CLKOUT << GPIO3B0_SHIFT); + break; + } +} + +static void pinctrl_rk3066_nand_config(struct rk3066_grf *grf) +{ + rk_clrsetreg(&grf->soc_con0, + EMMC_FLASH_SEL_MASK, + 0 << EMMC_FLASH_SEL_SHIFT); + rk_clrsetreg(&grf->gpio3d_iomux, + GPIO3D7_MASK, + GPIO3D7_FLASH_DQS << GPIO3D7_SHIFT); +} + +static int rk3066_pinctrl_request(struct udevice *dev, int func, int flags) +{ + struct rk3066_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_rk3066_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: + pinctrl_rk3066_i2c_config(priv->grf, func); + break; + case PERIPH_ID_SPI0: + case PERIPH_ID_SPI1: + pinctrl_rk3066_spi_config(priv->grf, func, flags); + break; + case PERIPH_ID_UART0: + case PERIPH_ID_UART1: + case PERIPH_ID_UART2: + case PERIPH_ID_UART3: + pinctrl_rk3066_uart_config(priv->grf, func); + break; + case PERIPH_ID_EMMC: + case PERIPH_ID_SDCARD: + pinctrl_rk3066_sdmmc_config(priv->grf, func); + break; + case PERIPH_ID_NAND: + pinctrl_rk3066_nand_config(priv->grf); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int rk3066_pinctrl_get_periph_id(struct udevice *dev, + struct udevice *periph) +{ +#if !CONFIG_IS_ENABLED(OF_PLATDATA) + 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 23: + return PERIPH_ID_SDCARD; + case 25: + return PERIPH_ID_EMMC; + case 27: + return PERIPH_ID_NAND; + case 34: + return PERIPH_ID_UART0; + case 35: + return PERIPH_ID_UART1; + case 36: + return PERIPH_ID_UART2; + case 37: + return PERIPH_ID_UART3; + case 38: + return PERIPH_ID_SPI0; + case 39: + return PERIPH_ID_SPI1; + case 40: + return PERIPH_ID_I2C0; + case 41: + return PERIPH_ID_I2C1; + case 42: + return PERIPH_ID_I2C2; + case 43: + return PERIPH_ID_I2C3; + case 30: + return PERIPH_ID_PWM0; + } +#endif + return -ENOENT; +} + +static int rk3066_pinctrl_set_state_simple(struct udevice *dev, + struct udevice *periph) +{ + int func; + + func = rk3066_pinctrl_get_periph_id(dev, periph); + if (func < 0) + return func; + return rk3066_pinctrl_request(dev, func, 0); +} + +static struct pinctrl_ops rk3066_pinctrl_ops = { + .set_state_simple = rk3066_pinctrl_set_state_simple, + .request = rk3066_pinctrl_request, + .get_periph_id = rk3066_pinctrl_get_periph_id, +}; + +static int rk3066_pinctrl_probe(struct udevice *dev) +{ + struct rk3066_pinctrl_priv *priv = dev_get_priv(dev); + + priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); + if (IS_ERR(priv->grf)) + debug("%s: grf=%p\n", __func__, priv->grf); + return 0; +} + +static const struct udevice_id rk3066_pinctrl_ids[] = { + { .compatible = "rockchip,rk3066a-pinctrl" }, + { } +}; + +U_BOOT_DRIVER(rockchip_rk3066a_pinctrl) = { + .name = "rockchip_rk3066a_pinctrl", + .id = UCLASS_PINCTRL, + .of_match = rk3066_pinctrl_ids, + .priv_auto_alloc_size = sizeof(struct rk3066_pinctrl_priv), + .ops = &rk3066_pinctrl_ops, +#if !CONFIG_IS_ENABLED(OF_PLATDATA) + .bind = dm_scan_fdt_dev, +#endif + .probe = rk3066_pinctrl_probe, +};