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b378c400e0
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 <renesas/rzg2l-pfc.h>. 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 <paul.barker.ct@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
110 lines
3.5 KiB
C
110 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* RZ/G2L Pin Function Controller
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*
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* Copyright (C) 2021-2023 Renesas Electronics Corp.
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*/
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#ifndef RENESAS_RZG2L_PFC_H
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#define RENESAS_RZG2L_PFC_H
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/* PIN capabilities */
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#define PIN_CFG_IOLH_A BIT(0)
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#define PIN_CFG_IOLH_B BIT(1)
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#define PIN_CFG_SR BIT(2)
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#define PIN_CFG_IEN BIT(3)
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#define PIN_CFG_PUPD BIT(4)
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#define PIN_CFG_IO_VMC_SD0 BIT(5)
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#define PIN_CFG_IO_VMC_SD1 BIT(6)
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#define PIN_CFG_IO_VMC_QSPI BIT(7)
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#define PIN_CFG_IO_VMC_ETH0 BIT(8)
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#define PIN_CFG_IO_VMC_ETH1 BIT(9)
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#define PIN_CFG_FILONOFF BIT(10)
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#define PIN_CFG_FILNUM BIT(11)
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#define PIN_CFG_FILCLKSEL BIT(12)
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#define RZG2L_MPXED_PIN_FUNCS (PIN_CFG_IOLH_A | \
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PIN_CFG_SR | \
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PIN_CFG_PUPD | \
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PIN_CFG_FILONOFF | \
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PIN_CFG_FILNUM | \
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PIN_CFG_FILCLKSEL)
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#define RZG2L_MPXED_ETH_PIN_FUNCS(x) ((x) | \
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PIN_CFG_FILONOFF | \
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PIN_CFG_FILNUM | \
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PIN_CFG_FILCLKSEL)
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/* GPIO port data macros:
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* n indicates number of pins in the port, a is the register index
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* and f is pin configuration capabilities supported.
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*/
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#define RZG2L_GPIO_PORT_PACK(n, a, f) (((n) << 28) | ((a) << 20) | (f))
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#define RZG2L_GPIO_PORT_GET_PINCNT(x) (((x) & GENMASK(30, 28)) >> 28)
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#define RZG2L_GPIO_PORT_GET_INDEX(x) (((x) & GENMASK(26, 20)) >> 20)
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#define RZG2L_GPIO_PORT_GET_CFGS(x) ((x) & GENMASK(19, 0))
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/* Dedicated pin data macros:
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* BIT(31) indicates dedicated pin, p is the register index while
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* referencing to SR/IEN/IOLH/FILxx registers, b is the register bits
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* (b * 8) and f is the pin configuration capabilities supported.
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*/
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#define RZG2L_SINGLE_PIN BIT(31)
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#define RZG2L_SINGLE_PIN_PACK(p, b, f) (RZG2L_SINGLE_PIN | \
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((p) << 24) | ((b) << 20) | (f))
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#define RZG2L_SINGLE_PIN_GET_PORT_OFFSET(x) (((x) & GENMASK(30, 24)) >> 24)
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#define RZG2L_SINGLE_PIN_GET_BIT(x) (((x) & GENMASK(22, 20)) >> 20)
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#define RZG2L_SINGLE_PIN_GET_CFGS(x) ((x) & GENMASK(19, 0))
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/* Pinmux data encoded in the device tree uses:
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* 16 lower bits [15:0] for pin identifier
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* 16 higher bits [31:16] for pin mux function
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*/
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#define MUX_PIN_ID_MASK GENMASK(15, 0)
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#define MUX_FUNC_MASK GENMASK(31, 16)
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#define RZG2L_PINS_PER_PORT 8
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#define RZG2L_PINMUX_TO_PORT(conf) (((conf) & MUX_PIN_ID_MASK) / RZG2L_PINS_PER_PORT)
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#define RZG2L_PINMUX_TO_PIN(conf) (((conf) & MUX_PIN_ID_MASK) % RZG2L_PINS_PER_PORT)
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#define RZG2L_PINMUX_TO_FUNC(conf) (((conf) & MUX_FUNC_MASK) >> 16)
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/* Register offsets and values. */
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#define P(n) (0x0000 + 0x10 + (n))
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#define PM(n) (0x0100 + 0x20 + (n) * 2)
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#define PMC(n) (0x0200 + 0x10 + (n))
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#define PFC(n) (0x0400 + 0x40 + (n) * 4)
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#define PIN(n) (0x0800 + 0x10 + (n))
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#define IOLH(n) (0x1000 + (n) * 8)
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#define IEN(n) (0x1800 + (n) * 8)
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#define PWPR 0x3014
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#define SD_CH(n) (0x3000 + (n) * 4)
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#define QSPI 0x3008
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#define PVDD_1800 1 /* I/O domain voltage <= 1.8V */
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#define PVDD_3300 0 /* I/O domain voltage >= 3.3V */
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#define PWPR_B0WI BIT(7) /* Bit Write Disable */
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#define PWPR_PFCWE BIT(6) /* PFC Register Write Enable */
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#define PM_MASK 0x03
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#define PVDD_MASK 0x01
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#define PFC_MASK 0x07
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#define IEN_MASK 0x01
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#define IOLH_MASK 0x03
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#define PM_HIGH_Z 0x0
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#define PM_INPUT 0x1
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#define PM_OUTPUT 0x2
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#define PM_OUTPUT_IEN 0x3
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struct rzg2l_pfc_data {
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void __iomem *base;
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uint num_dedicated_pins;
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uint num_ports;
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uint num_pins;
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const u32 *gpio_configs;
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};
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int rzg2l_pfc_enable(struct udevice *dev);
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bool rzg2l_port_validate(const struct rzg2l_pfc_data *data, u32 port, u8 pin);
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#endif /* RENESAS_RZG2L_PFC_H */
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