From b378c400e04eab340335a1691a390a93f17f6394 Mon Sep 17 00:00:00 2001 From: Paul Barker Date: Mon, 16 Oct 2023 10:25:32 +0100 Subject: pinctrl: renesas: Add RZ/G2L PFC driver This driver adds support for the pinctrl features of the GPIO/PFC module in the Renesas RZ/G2L (R9A07G044) SoC. A multi-function `rzg2l-pfc` driver is defined for UCLASS_NOP, which binds the `rzg2l-pfc-pinctrl` UCLASS_PINCTRL driver dynamically. We also define common macros and functions for the PFC in . This makes it easy to add an additional UCLASS_GPIO driver for the GPIO functionality of this module in a follow-up patch. This patch is based on the corresponding Linux v6.5 driver (commit 52e12027d50affbf60c6c9c64db8017391b0c22e). Signed-off-by: Paul Barker Reviewed-by: Biju Das Reviewed-by: Lad Prabhakar Reviewed-by: Marek Vasut --- include/renesas/rzg2l-pfc.h | 110 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 include/renesas/rzg2l-pfc.h (limited to 'include/renesas') diff --git a/include/renesas/rzg2l-pfc.h b/include/renesas/rzg2l-pfc.h new file mode 100644 index 0000000..2df17ec --- /dev/null +++ b/include/renesas/rzg2l-pfc.h @@ -0,0 +1,110 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * RZ/G2L Pin Function Controller + * + * Copyright (C) 2021-2023 Renesas Electronics Corp. + */ + +#ifndef RENESAS_RZG2L_PFC_H +#define RENESAS_RZG2L_PFC_H + +/* PIN capabilities */ +#define PIN_CFG_IOLH_A BIT(0) +#define PIN_CFG_IOLH_B BIT(1) +#define PIN_CFG_SR BIT(2) +#define PIN_CFG_IEN BIT(3) +#define PIN_CFG_PUPD BIT(4) +#define PIN_CFG_IO_VMC_SD0 BIT(5) +#define PIN_CFG_IO_VMC_SD1 BIT(6) +#define PIN_CFG_IO_VMC_QSPI BIT(7) +#define PIN_CFG_IO_VMC_ETH0 BIT(8) +#define PIN_CFG_IO_VMC_ETH1 BIT(9) +#define PIN_CFG_FILONOFF BIT(10) +#define PIN_CFG_FILNUM BIT(11) +#define PIN_CFG_FILCLKSEL BIT(12) + +#define RZG2L_MPXED_PIN_FUNCS (PIN_CFG_IOLH_A | \ + PIN_CFG_SR | \ + PIN_CFG_PUPD | \ + PIN_CFG_FILONOFF | \ + PIN_CFG_FILNUM | \ + PIN_CFG_FILCLKSEL) + +#define RZG2L_MPXED_ETH_PIN_FUNCS(x) ((x) | \ + PIN_CFG_FILONOFF | \ + PIN_CFG_FILNUM | \ + PIN_CFG_FILCLKSEL) + +/* GPIO port data macros: + * n indicates number of pins in the port, a is the register index + * and f is pin configuration capabilities supported. + */ +#define RZG2L_GPIO_PORT_PACK(n, a, f) (((n) << 28) | ((a) << 20) | (f)) +#define RZG2L_GPIO_PORT_GET_PINCNT(x) (((x) & GENMASK(30, 28)) >> 28) +#define RZG2L_GPIO_PORT_GET_INDEX(x) (((x) & GENMASK(26, 20)) >> 20) +#define RZG2L_GPIO_PORT_GET_CFGS(x) ((x) & GENMASK(19, 0)) + +/* Dedicated pin data macros: + * BIT(31) indicates dedicated pin, p is the register index while + * referencing to SR/IEN/IOLH/FILxx registers, b is the register bits + * (b * 8) and f is the pin configuration capabilities supported. + */ +#define RZG2L_SINGLE_PIN BIT(31) +#define RZG2L_SINGLE_PIN_PACK(p, b, f) (RZG2L_SINGLE_PIN | \ + ((p) << 24) | ((b) << 20) | (f)) +#define RZG2L_SINGLE_PIN_GET_PORT_OFFSET(x) (((x) & GENMASK(30, 24)) >> 24) +#define RZG2L_SINGLE_PIN_GET_BIT(x) (((x) & GENMASK(22, 20)) >> 20) +#define RZG2L_SINGLE_PIN_GET_CFGS(x) ((x) & GENMASK(19, 0)) + +/* Pinmux data encoded in the device tree uses: + * 16 lower bits [15:0] for pin identifier + * 16 higher bits [31:16] for pin mux function + */ +#define MUX_PIN_ID_MASK GENMASK(15, 0) +#define MUX_FUNC_MASK GENMASK(31, 16) +#define RZG2L_PINS_PER_PORT 8 +#define RZG2L_PINMUX_TO_PORT(conf) (((conf) & MUX_PIN_ID_MASK) / RZG2L_PINS_PER_PORT) +#define RZG2L_PINMUX_TO_PIN(conf) (((conf) & MUX_PIN_ID_MASK) % RZG2L_PINS_PER_PORT) +#define RZG2L_PINMUX_TO_FUNC(conf) (((conf) & MUX_FUNC_MASK) >> 16) + +/* Register offsets and values. */ +#define P(n) (0x0000 + 0x10 + (n)) +#define PM(n) (0x0100 + 0x20 + (n) * 2) +#define PMC(n) (0x0200 + 0x10 + (n)) +#define PFC(n) (0x0400 + 0x40 + (n) * 4) +#define PIN(n) (0x0800 + 0x10 + (n)) +#define IOLH(n) (0x1000 + (n) * 8) +#define IEN(n) (0x1800 + (n) * 8) +#define PWPR 0x3014 +#define SD_CH(n) (0x3000 + (n) * 4) +#define QSPI 0x3008 + +#define PVDD_1800 1 /* I/O domain voltage <= 1.8V */ +#define PVDD_3300 0 /* I/O domain voltage >= 3.3V */ + +#define PWPR_B0WI BIT(7) /* Bit Write Disable */ +#define PWPR_PFCWE BIT(6) /* PFC Register Write Enable */ + +#define PM_MASK 0x03 +#define PVDD_MASK 0x01 +#define PFC_MASK 0x07 +#define IEN_MASK 0x01 +#define IOLH_MASK 0x03 + +#define PM_HIGH_Z 0x0 +#define PM_INPUT 0x1 +#define PM_OUTPUT 0x2 +#define PM_OUTPUT_IEN 0x3 + +struct rzg2l_pfc_data { + void __iomem *base; + uint num_dedicated_pins; + uint num_ports; + uint num_pins; + const u32 *gpio_configs; +}; + +int rzg2l_pfc_enable(struct udevice *dev); +bool rzg2l_port_validate(const struct rzg2l_pfc_data *data, u32 port, u8 pin); + +#endif /* RENESAS_RZG2L_PFC_H */ -- cgit v1.1