diff options
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/pinctrl/rockchip/Makefile | 4 | ||||
| -rw-r--r-- | drivers/pinctrl/rockchip/pinctrl_rk3128.c | 187 |
3 files changed, 199 insertions, 2 deletions
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig index afca56dff1..7e8e4b0b27 100644 --- a/drivers/pinctrl/Kconfig +++ b/drivers/pinctrl/Kconfig @@ -168,6 +168,16 @@ config PINCTRL_ROCKCHIP_RK3036 the GPIO definitions and pin control functions for each available multiplex function. +config PINCTRL_ROCKCHIP_RK3128 + bool "Rockchip rk3128 pin control driver" + depends on DM + help + Support pin multiplexing control on Rockchip rk3128 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 5251771a10..f09c6e17b4 100644 --- a/drivers/pinctrl/rockchip/Makefile +++ b/drivers/pinctrl/rockchip/Makefile @@ -1,11 +1,11 @@ # -# Copyright (c) 2015 Google, Inc -# Written by Simon Glass <sjg@chromium.org> +# Copyright (c) 2017 Rockchip Electronics Co., Ltd # # SPDX-License-Identifier: GPL-2.0+ # obj-$(CONFIG_PINCTRL_ROCKCHIP_RK3036) += pinctrl_rk3036.o +obj-$(CONFIG_PINCTRL_ROCKCHIP_RK3128) += pinctrl_rk3128.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_rk3128.c b/drivers/pinctrl/rockchip/pinctrl_rk3128.c new file mode 100644 index 0000000000..b1c32ac592 --- /dev/null +++ b/drivers/pinctrl/rockchip/pinctrl_rk3128.c @@ -0,0 +1,187 @@ +/* + * Pinctrl driver for Rockchip 3128 SoCs + * (C) Copyright 2017 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_rk3128.h> +#include <asm/arch/hardware.h> +#include <asm/arch/periph.h> +#include <dm/pinctrl.h> + +DECLARE_GLOBAL_DATA_PTR; + +struct rk3128_pinctrl_priv { + struct rk3128_grf *grf; +}; + +static void pinctrl_rk3128_i2c_config(struct rk3128_grf *grf, int i2c_id) +{ + switch (i2c_id) { + case PERIPH_ID_I2C0: + rk_clrsetreg(&grf->gpio0a_iomux, + GPIO0A1_MASK | GPIO0A0_MASK, + GPIO0A1_I2C0_SDA << GPIO0A1_SHIFT | + GPIO0A0_I2C0_SCL << GPIO0A0_SHIFT); + + break; + case PERIPH_ID_I2C1: + rk_clrsetreg(&grf->gpio0a_iomux, + GPIO0A3_MASK | GPIO0A2_MASK, + GPIO0A3_I2C1_SDA << GPIO0A3_SHIFT | + GPIO0A2_I2C1_SCL << GPIO0A2_SHIFT); + break; + case PERIPH_ID_I2C2: + rk_clrsetreg(&grf->gpio2c_iomux2, + GPIO2C5_MASK | GPIO2C4_MASK, + GPIO2C5_I2C2_SCL << GPIO2C5_SHIFT | + GPIO2C4_I2C2_SDA << GPIO2C4_SHIFT); + break; + case PERIPH_ID_I2C3: + rk_clrsetreg(&grf->gpio0a_iomux, + GPIO0A7_MASK | GPIO0A6_MASK, + GPIO0A7_I2C3_SDA << GPIO0A7_SHIFT | + GPIO0A6_I2C3_SCL << GPIO0A6_SHIFT); + + break; + } +} + +static void pinctrl_rk3128_sdmmc_config(struct rk3128_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, + GPIO2A5_MASK | GPIO2A7_MASK, + GPIO2A5_EMMC_PWREN << GPIO2A5_SHIFT | + GPIO2A7_EMMC_CLKOUT << GPIO2A7_SHIFT); + break; + case PERIPH_ID_SDCARD: + rk_clrsetreg(&grf->gpio1c_iomux, 0x0fff, + 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 rk3128_pinctrl_request(struct udevice *dev, int func, int flags) +{ + struct rk3128_pinctrl_priv *priv = dev_get_priv(dev); + + debug("%s: func=%x, flags=%x\n", __func__, func, flags); + switch (func) { + case PERIPH_ID_I2C0: + case PERIPH_ID_I2C1: + case PERIPH_ID_I2C2: + case PERIPH_ID_I2C3: + pinctrl_rk3128_i2c_config(priv->grf, func); + break; + case PERIPH_ID_SDMMC0: + case PERIPH_ID_SDMMC1: + pinctrl_rk3128_sdmmc_config(priv->grf, func); + break; + default: + return -EINVAL; + } + + return 0; +} + +static int rk3128_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 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 27: + return PERIPH_ID_I2C3; + case 30: + return PERIPH_ID_PWM0; + } + return -ENOENT; +} + +static int rk3128_pinctrl_set_state_simple(struct udevice *dev, + struct udevice *periph) +{ + int func; + + func = rk3128_pinctrl_get_periph_id(dev, periph); + if (func < 0) + return func; + return rk3128_pinctrl_request(dev, func, 0); +} + +static struct pinctrl_ops rk3128_pinctrl_ops = { + .set_state_simple = rk3128_pinctrl_set_state_simple, + .request = rk3128_pinctrl_request, + .get_periph_id = rk3128_pinctrl_get_periph_id, +}; + +static int rk3128_pinctrl_probe(struct udevice *dev) +{ + struct rk3128_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 rk3128_pinctrl_ids[] = { + { .compatible = "rockchip,rk3128-pinctrl" }, + { } +}; + +U_BOOT_DRIVER(pinctrl_rk3128) = { + .name = "pinctrl_rk3128", + .id = UCLASS_PINCTRL, + .of_match = rk3128_pinctrl_ids, + .priv_auto_alloc_size = sizeof(struct rk3128_pinctrl_priv), + .ops = &rk3128_pinctrl_ops, + .bind = dm_scan_fdt_dev, + .probe = rk3128_pinctrl_probe, +}; |