This patch adds pinctrl support for MediaTek MT7621 SoC. The MT7621 SoC supports pinconf, but it is not the same as mt7628.
Signed-off-by: Weijie Gao weijie.gao@mediatek.com --- v3 changes: none v2 changes: none --- drivers/pinctrl/mtmips/Kconfig | 9 + drivers/pinctrl/mtmips/Makefile | 1 + drivers/pinctrl/mtmips/pinctrl-mt7621.c | 307 ++++++++++++++++++ .../pinctrl/mtmips/pinctrl-mtmips-common.c | 4 +- .../pinctrl/mtmips/pinctrl-mtmips-common.h | 12 + 5 files changed, 331 insertions(+), 2 deletions(-) create mode 100644 drivers/pinctrl/mtmips/pinctrl-mt7621.c
diff --git a/drivers/pinctrl/mtmips/Kconfig b/drivers/pinctrl/mtmips/Kconfig index 844d5b743f..456f3ea25d 100644 --- a/drivers/pinctrl/mtmips/Kconfig +++ b/drivers/pinctrl/mtmips/Kconfig @@ -12,6 +12,15 @@ config PINCTRL_MT7620 The driver is controlled by a device tree node which contains the pin mux functions for each available pin groups.
+config PINCTRL_MT7621 + bool "MediaTek MT7621 pin control driver" + select PINCTRL_MTMIPS + depends on SOC_MT7621 && PINCTRL_GENERIC + help + Support pin multiplexing control on MediaTek MT7621. + The driver is controlled by a device tree node which contains + the pin mux functions for each available pin groups. + config PINCTRL_MT7628 bool "MediaTek MT7628 pin control driver" select PINCTRL_MTMIPS diff --git a/drivers/pinctrl/mtmips/Makefile b/drivers/pinctrl/mtmips/Makefile index ba945a89a7..8fece4f5fa 100644 --- a/drivers/pinctrl/mtmips/Makefile +++ b/drivers/pinctrl/mtmips/Makefile @@ -5,4 +5,5 @@ obj-$(CONFIG_PINCTRL_MTMIPS) += pinctrl-mtmips-common.o
# SoC Drivers obj-$(CONFIG_PINCTRL_MT7620) += pinctrl-mt7620.o +obj-$(CONFIG_PINCTRL_MT7621) += pinctrl-mt7621.o obj-$(CONFIG_PINCTRL_MT7628) += pinctrl-mt7628.o diff --git a/drivers/pinctrl/mtmips/pinctrl-mt7621.c b/drivers/pinctrl/mtmips/pinctrl-mt7621.c new file mode 100644 index 0000000000..c786d13d9e --- /dev/null +++ b/drivers/pinctrl/mtmips/pinctrl-mt7621.c @@ -0,0 +1,307 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2021 MediaTek Inc. All Rights Reserved. + * + * Author: Weijie Gao weijie.gao@mediatek.com + */ + +#include <common.h> +#include <dm.h> +#include <dm/pinctrl.h> +#include <dm/device_compat.h> +#include <linux/bitops.h> +#include <linux/io.h> + +#include "pinctrl-mtmips-common.h" + +#define SYSC_MAP_SIZE 0x100 + +#define PAD_UART1_GPIO0_OFS 0x00 +#define PAD_UART3_I2C_OFS 0x04 +#define PAD_UART2_JTAG_OFS 0x08 +#define PAD_PERST_WDT_OFS 0x0c +#define PAD_RGMII2_MDIO_OFS 0x10 +#define PAD_SDXC_SPI_OFS 0x14 +#define GPIOMODE_OFS 0x18 +#define PAD_BOPT_ESWINT_OFS 0x28 + +#define ESWINT_SHIFT 20 +#define SDXC_SHIFT 18 +#define SPI_SHIFT 16 +#define RGMII2_SHIFT 15 +#define RGMII1_SHIFT 14 +#define MDIO_SHIFT 12 +#define PERST_SHIFT 10 +#define WDT_SHIFT 8 +#define JTAG_SHIFT 7 +#define UART2_SHIFT 5 +#define UART3_SHIFT 3 +#define I2C_SHIFT 2 +#define UART1_SHIFT 1 +#define GPIO0_SHIFT 0 /* Dummy */ + +#define GM4_MASK 3 + +#define E4_E2_M 0x03 +#define E4_E2_S 4 +#define PULL_UP BIT(3) +#define PULL_DOWN BIT(2) +#define SMT BIT(1) +#define SR BIT(0) + +struct mt7621_pinctrl_priv { + struct mtmips_pinctrl_priv mp; +}; + +#if CONFIG_IS_ENABLED(PINMUX) +static const struct mtmips_pmx_func esw_int_grp[] = { + FUNC("gpio", 1), + FUNC("esw int", 0), +}; + +static const struct mtmips_pmx_func sdxc_grp[] = { + FUNC("nand", 2), + FUNC("gpio", 1), + FUNC("sdxc", 0), +}; + +static const struct mtmips_pmx_func spi_grp[] = { + FUNC("nand", 2), + FUNC("gpio", 1), + FUNC("spi", 0), +}; + +static const struct mtmips_pmx_func rgmii2_grp[] = { + FUNC("gpio", 1), + FUNC("rgmii", 0), +}; + +static const struct mtmips_pmx_func rgmii1_grp[] = { + FUNC("gpio", 1), + FUNC("rgmii", 0), +}; + +static const struct mtmips_pmx_func mdio_grp[] = { + FUNC("gpio", 1), + FUNC("mdio", 0), +}; + +static const struct mtmips_pmx_func perst_grp[] = { + FUNC("refclk", 2), + FUNC("gpio", 1), + FUNC("pcie reset", 0), +}; + +static const struct mtmips_pmx_func wdt_grp[] = { + FUNC("refclk", 2), + FUNC("gpio", 1), + FUNC("wdt rst", 0), +}; + +static const struct mtmips_pmx_func jtag_grp[] = { + FUNC("gpio", 1), + FUNC("jtag", 0), +}; + +static const struct mtmips_pmx_func uart2_grp[] = { + FUNC("spdif", 3), + FUNC("pcm", 2), + FUNC("gpio", 1), + FUNC("uart", 0), +}; + +static const struct mtmips_pmx_func uart3_grp[] = { + FUNC("spdif", 3), + FUNC("i2s", 2), + FUNC("gpio", 1), + FUNC("uart", 0), +}; + +static const struct mtmips_pmx_func i2c_grp[] = { + FUNC("gpio", 1), + FUNC("i2c", 0), +}; + +static const struct mtmips_pmx_func uart1_grp[] = { + FUNC("gpio", 1), + FUNC("uart", 0), +}; + +static const struct mtmips_pmx_func gpio0_grp[] = { + FUNC("gpio", 0), +}; + +static const struct mtmips_pmx_group mt7621_pmx_data[] = { + GRP_PCONF("esw int", esw_int_grp, GPIOMODE_OFS, ESWINT_SHIFT, 1, + PAD_BOPT_ESWINT_OFS, 0), + GRP_PCONF("sdxc", sdxc_grp, GPIOMODE_OFS, SDXC_SHIFT, GM4_MASK, + PAD_SDXC_SPI_OFS, 16), + GRP_PCONF("spi", spi_grp, GPIOMODE_OFS, SPI_SHIFT, GM4_MASK, + PAD_SDXC_SPI_OFS, 0), + GRP_PCONF("rgmii2", rgmii2_grp, GPIOMODE_OFS, RGMII2_SHIFT, 1, + PAD_RGMII2_MDIO_OFS, 16), + GRP("rgmii1", rgmii1_grp, GPIOMODE_OFS, RGMII1_SHIFT, 1), + GRP_PCONF("mdio", mdio_grp, GPIOMODE_OFS, MDIO_SHIFT, GM4_MASK, + PAD_RGMII2_MDIO_OFS, 0), + GRP_PCONF("pcie reset", perst_grp, GPIOMODE_OFS, PERST_SHIFT, GM4_MASK, + PAD_PERST_WDT_OFS, 16), + GRP_PCONF("wdt", wdt_grp, GPIOMODE_OFS, WDT_SHIFT, GM4_MASK, + PAD_PERST_WDT_OFS, 0), + GRP_PCONF("jtag", jtag_grp, GPIOMODE_OFS, JTAG_SHIFT, 1, + PAD_UART2_JTAG_OFS, 16), + GRP_PCONF("uart2", uart2_grp, GPIOMODE_OFS, UART2_SHIFT, GM4_MASK, + PAD_UART2_JTAG_OFS, 0), + GRP_PCONF("uart3", uart3_grp, GPIOMODE_OFS, UART3_SHIFT, GM4_MASK, + PAD_UART3_I2C_OFS, 16), + GRP_PCONF("i2c", i2c_grp, GPIOMODE_OFS, I2C_SHIFT, 1, + PAD_UART3_I2C_OFS, 0), + GRP_PCONF("uart1", uart1_grp, GPIOMODE_OFS, UART1_SHIFT, 1, + PAD_UART1_GPIO0_OFS, 16), + GRP_PCONF("gpio0", gpio0_grp, GPIOMODE_OFS, GPIO0_SHIFT, 1, + PAD_UART1_GPIO0_OFS, 0), +}; + +static int mt7621_get_groups_count(struct udevice *dev) +{ + return ARRAY_SIZE(mt7621_pmx_data); +} + +static const char *mt7621_get_group_name(struct udevice *dev, + unsigned int selector) +{ + return mt7621_pmx_data[selector].name; +} +#endif /* CONFIG_IS_ENABLED(PINMUX) */ + +#if CONFIG_IS_ENABLED(PINCONF) +static const struct pinconf_param mt7621_conf_params[] = { + { "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 }, + { "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 }, + { "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 }, + { "input-schmitt-enable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 1 }, + { "input-schmitt-disable", PIN_CONFIG_INPUT_SCHMITT_ENABLE, 0 }, + { "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 0 }, + { "slew-rate", PIN_CONFIG_SLEW_RATE, 0 }, +}; + +static const u32 mt7621_pconf_drv_strength_tbl[] = {2, 4, 6, 8}; + +static int mt7621_pinconf_group_set(struct udevice *dev, + unsigned int group_selector, + unsigned int param, unsigned int arg) +{ + struct mt7621_pinctrl_priv *priv = dev_get_priv(dev); + const struct mtmips_pmx_group *grp = &mt7621_pmx_data[group_selector]; + u32 clr = 0, set = 0; + int i; + + if (!grp->pconf_avail) + return 0; + + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + clr = PULL_UP | PULL_DOWN; + break; + + case PIN_CONFIG_BIAS_PULL_UP: + clr = PULL_DOWN; + set = PULL_UP; + break; + + case PIN_CONFIG_BIAS_PULL_DOWN: + clr = PULL_UP; + set = PULL_DOWN; + break; + + case PIN_CONFIG_INPUT_SCHMITT_ENABLE: + if (arg) + set = SMT; + else + clr = SMT; + break; + + case PIN_CONFIG_DRIVE_STRENGTH: + for (i = 0; i < ARRAY_SIZE(mt7621_pconf_drv_strength_tbl); i++) + if (mt7621_pconf_drv_strength_tbl[i] == arg) + break; + + if (i >= ARRAY_SIZE(mt7621_pconf_drv_strength_tbl)) + return -EINVAL; + + clr = E4_E2_M << E4_E2_S; + set = i << E4_E2_S; + break; + + case PIN_CONFIG_SLEW_RATE: + if (arg) + set = SR; + else + clr = SR; + break; + + default: + return -EINVAL; + } + + mtmips_pinctrl_reg_set(&priv->mp, grp->pconf_reg, grp->pconf_shift, + clr, set); + + return 0; +} +#endif + +static int mt7621_pinctrl_probe(struct udevice *dev) +{ + struct mt7621_pinctrl_priv *priv = dev_get_priv(dev); + int ret = 0; + +#if CONFIG_IS_ENABLED(PINMUX) + ret = mtmips_pinctrl_probe(&priv->mp, ARRAY_SIZE(mt7621_pmx_data), + mt7621_pmx_data); +#endif /* CONFIG_IS_ENABLED(PINMUX) */ + + return ret; +} + +static int mt7621_pinctrl_of_to_plat(struct udevice *dev) +{ + struct mt7621_pinctrl_priv *priv = dev_get_priv(dev); + + priv->mp.base = (void __iomem *)dev_remap_addr_index(dev, 0); + + if (!priv->mp.base) + return -EINVAL; + + return 0; +} + +static const struct pinctrl_ops mt7621_pinctrl_ops = { +#if CONFIG_IS_ENABLED(PINMUX) + .get_groups_count = mt7621_get_groups_count, + .get_group_name = mt7621_get_group_name, + .get_functions_count = mtmips_get_functions_count, + .get_function_name = mtmips_get_function_name, + .pinmux_group_set = mtmips_pinmux_group_set, +#endif /* CONFIG_IS_ENABLED(PINMUX) */ +#if CONFIG_IS_ENABLED(PINCONF) + .pinconf_num_params = ARRAY_SIZE(mt7621_conf_params), + .pinconf_params = mt7621_conf_params, + .pinconf_group_set = mt7621_pinconf_group_set, +#endif /* CONFIG_IS_ENABLED(PINCONF) */ + .set_state = pinctrl_generic_set_state, +}; + +static const struct udevice_id mt7621_pinctrl_ids[] = { + { .compatible = "mediatek,mt7621-pinctrl" }, + { } +}; + +U_BOOT_DRIVER(mt7621_pinctrl) = { + .name = "mt7621-pinctrl", + .id = UCLASS_PINCTRL, + .of_match = mt7621_pinctrl_ids, + .of_to_plat = mt7621_pinctrl_of_to_plat, + .ops = &mt7621_pinctrl_ops, + .probe = mt7621_pinctrl_probe, + .priv_auto = sizeof(struct mt7621_pinctrl_priv), +}; diff --git a/drivers/pinctrl/mtmips/pinctrl-mtmips-common.c b/drivers/pinctrl/mtmips/pinctrl-mtmips-common.c index e361916eb2..869b781068 100644 --- a/drivers/pinctrl/mtmips/pinctrl-mtmips-common.c +++ b/drivers/pinctrl/mtmips/pinctrl-mtmips-common.c @@ -13,8 +13,8 @@
#include "pinctrl-mtmips-common.h"
-static void mtmips_pinctrl_reg_set(struct mtmips_pinctrl_priv *priv, - u32 reg, u32 shift, u32 mask, u32 value) +void mtmips_pinctrl_reg_set(struct mtmips_pinctrl_priv *priv, + u32 reg, u32 shift, u32 mask, u32 value) { u32 val;
diff --git a/drivers/pinctrl/mtmips/pinctrl-mtmips-common.h b/drivers/pinctrl/mtmips/pinctrl-mtmips-common.h index b51d8f009c..1f1023ef42 100644 --- a/drivers/pinctrl/mtmips/pinctrl-mtmips-common.h +++ b/drivers/pinctrl/mtmips/pinctrl-mtmips-common.h @@ -22,6 +22,10 @@ struct mtmips_pmx_group { u32 shift; char mask;
+ int pconf_avail; + u32 pconf_reg; + u32 pconf_shift; + int nfuncs; const struct mtmips_pmx_func *funcs; }; @@ -42,6 +46,14 @@ struct mtmips_pinctrl_priv { { .name = (_name), .reg = (_reg), .shift = (_shift), .mask = (_mask), \ .funcs = (_funcs), .nfuncs = ARRAY_SIZE(_funcs) }
+#define GRP_PCONF(_name, _funcs, _reg, _shift, _mask, _pconf_reg, _pconf_shift) \ + { .name = (_name), .reg = (_reg), .shift = (_shift), .mask = (_mask), \ + .funcs = (_funcs), .nfuncs = ARRAY_SIZE(_funcs), .pconf_avail = 1, \ + .pconf_reg = (_pconf_reg), .pconf_shift = (_pconf_shift) } + +void mtmips_pinctrl_reg_set(struct mtmips_pinctrl_priv *priv, + u32 reg, u32 shift, u32 mask, u32 value); + int mtmips_get_functions_count(struct udevice *dev); const char *mtmips_get_function_name(struct udevice *dev, unsigned int selector);