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u-boot/drivers/pinctrl/renesas/rzg2l-pfc.c
Paul Barker 21e4ba153f gpio: Add RZ/G2L GPIO driver 
This driver adds support for the gpio features of the GPIO/PFC module in
the Renesas RZ/G2L (R9A07G044) SoC.

The new `rzg2l-pfc-gpio` driver is bound to the same device tree node as
the `rzg2l-pfc-pinctrl` driver as the same hardware block provides both
GPIO and pin multiplexing features.

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>
2023-10-16 15:46:18 +02:00

625 lines
22 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/*
* RZ/G2L Pin Function Controller
*
* Copyright (C) 2021-2023 Renesas Electronics Corp.
*/
#include <common.h>
#include <asm/io.h>
#include <clk.h>
#include <dm.h>
#include <dm/device-internal.h>
#include <dm/device.h>
#include <dm/device_compat.h>
#include <dm/devres.h>
#include <dm/lists.h>
#include <dm/pinctrl.h>
#include <renesas/rzg2l-pfc.h>
#include <reset.h>
struct rzg2l_pfc_driver_data {
uint num_dedicated_pins;
uint num_ports;
const u32 *gpio_configs;
};
struct rzg2l_dedicated_configs {
const char *name;
u32 config;
};
/*
* We need to ensure that the module clock is enabled and all resets are
* de-asserted before using either the gpio or pinctrl functionality. Error
* handling can be quite simple here as if the PFC cannot be enabled then we
* will not be able to progress with the boot anyway.
*/
int rzg2l_pfc_enable(struct udevice *dev)
{
struct reset_ctl_bulk rsts;
struct clk clk;
int ret;
ret = clk_get_by_index(dev, 0, &clk);
if (ret < 0) {
dev_err(dev, "failed to get gpio module clock\n");
return ret;
}
ret = clk_enable(&clk);
if (ret < 0) {
dev_err(dev, "failed to enable gpio module clock\n");
return ret;
}
ret = reset_get_bulk(dev, &rsts);
if (ret < 0) {
dev_err(dev, "failed to get reset lines\n");
return ret;
}
ret = reset_deassert_bulk(&rsts);
if (ret < 0) {
dev_err(dev, "failed to de-assert reset lines\n");
return ret;
}
return 0;
}
bool rzg2l_port_validate(const struct rzg2l_pfc_data *data, u32 port, u8 pin)
{
return (port < data->num_ports) &&
(pin < RZG2L_GPIO_PORT_GET_PINCNT(data->gpio_configs[port]));
}
/* Decode a pin selector, returning the port index and setting *pin to the pin
* index. Returns -1 on error, which can be checked directly or by calling
* rzg2l_port_validate().
*/
static int rzg2l_selector_decode(const struct rzg2l_pfc_data *data,
unsigned int selector,
u8 *pin)
{
int port;
selector -= data->num_dedicated_pins;
for (port = 0; port < data->num_ports; port++) {
u8 num_pins = RZG2L_GPIO_PORT_GET_PINCNT(data->gpio_configs[port]);
if (selector < num_pins) {
*pin = (u8)selector;
return port;
}
selector -= num_pins;
}
return -EINVAL;
}
static unsigned int rzg2l_selector_encode(const struct rzg2l_pfc_data *data,
u32 port, u8 pin)
{
unsigned int selector = data->num_dedicated_pins + pin;
u32 i;
for (i = 0; i < port; i++)
selector += RZG2L_GPIO_PORT_GET_PINCNT(data->gpio_configs[i]);
return selector;
}
static const char * const rzg2l_gpio_names[] = {
"P0_0", "P0_1", "P0_2", "P0_3", "P0_4", "P0_5", "P0_6", "P0_7",
"P1_0", "P1_1", "P1_2", "P1_3", "P1_4", "P1_5", "P1_6", "P1_7",
"P2_0", "P2_1", "P2_2", "P2_3", "P2_4", "P2_5", "P2_6", "P2_7",
"P3_0", "P3_1", "P3_2", "P3_3", "P3_4", "P3_5", "P3_6", "P3_7",
"P4_0", "P4_1", "P4_2", "P4_3", "P4_4", "P4_5", "P4_6", "P4_7",
"P5_0", "P5_1", "P5_2", "P5_3", "P5_4", "P5_5", "P5_6", "P5_7",
"P6_0", "P6_1", "P6_2", "P6_3", "P6_4", "P6_5", "P6_6", "P6_7",
"P7_0", "P7_1", "P7_2", "P7_3", "P7_4", "P7_5", "P7_6", "P7_7",
"P8_0", "P8_1", "P8_2", "P8_3", "P8_4", "P8_5", "P8_6", "P8_7",
"P9_0", "P9_1", "P9_2", "P9_3", "P9_4", "P9_5", "P9_6", "P9_7",
"P10_0", "P10_1", "P10_2", "P10_3", "P10_4", "P10_5", "P10_6", "P10_7",
"P11_0", "P11_1", "P11_2", "P11_3", "P11_4", "P11_5", "P11_6", "P11_7",
"P12_0", "P12_1", "P12_2", "P12_3", "P12_4", "P12_5", "P12_6", "P12_7",
"P13_0", "P13_1", "P13_2", "P13_3", "P13_4", "P13_5", "P13_6", "P13_7",
"P14_0", "P14_1", "P14_2", "P14_3", "P14_4", "P14_5", "P14_6", "P14_7",
"P15_0", "P15_1", "P15_2", "P15_3", "P15_4", "P15_5", "P15_6", "P15_7",
"P16_0", "P16_1", "P16_2", "P16_3", "P16_4", "P16_5", "P16_6", "P16_7",
"P17_0", "P17_1", "P17_2", "P17_3", "P17_4", "P17_5", "P17_6", "P17_7",
"P18_0", "P18_1", "P18_2", "P18_3", "P18_4", "P18_5", "P18_6", "P18_7",
"P19_0", "P19_1", "P19_2", "P19_3", "P19_4", "P19_5", "P19_6", "P19_7",
"P20_0", "P20_1", "P20_2", "P20_3", "P20_4", "P20_5", "P20_6", "P20_7",
"P21_0", "P21_1", "P21_2", "P21_3", "P21_4", "P21_5", "P21_6", "P21_7",
"P22_0", "P22_1", "P22_2", "P22_3", "P22_4", "P22_5", "P22_6", "P22_7",
"P23_0", "P23_1", "P23_2", "P23_3", "P23_4", "P23_5", "P23_6", "P23_7",
"P24_0", "P24_1", "P24_2", "P24_3", "P24_4", "P24_5", "P24_6", "P24_7",
"P25_0", "P25_1", "P25_2", "P25_3", "P25_4", "P25_5", "P25_6", "P25_7",
"P26_0", "P26_1", "P26_2", "P26_3", "P26_4", "P26_5", "P26_6", "P26_7",
"P27_0", "P27_1", "P27_2", "P27_3", "P27_4", "P27_5", "P27_6", "P27_7",
"P28_0", "P28_1", "P28_2", "P28_3", "P28_4", "P28_5", "P28_6", "P28_7",
"P29_0", "P29_1", "P29_2", "P29_3", "P29_4", "P29_5", "P29_6", "P29_7",
"P30_0", "P30_1", "P30_2", "P30_3", "P30_4", "P30_5", "P30_6", "P30_7",
"P31_0", "P31_1", "P31_2", "P31_3", "P31_4", "P31_5", "P31_6", "P31_7",
"P32_0", "P32_1", "P32_2", "P32_3", "P32_4", "P32_5", "P32_6", "P32_7",
"P33_0", "P33_1", "P33_2", "P33_3", "P33_4", "P33_5", "P33_6", "P33_7",
"P34_0", "P34_1", "P34_2", "P34_3", "P34_4", "P34_5", "P34_6", "P34_7",
"P35_0", "P35_1", "P35_2", "P35_3", "P35_4", "P35_5", "P35_6", "P35_7",
"P36_0", "P36_1", "P36_2", "P36_3", "P36_4", "P36_5", "P36_6", "P36_7",
"P37_0", "P37_1", "P37_2", "P37_3", "P37_4", "P37_5", "P37_6", "P37_7",
"P38_0", "P38_1", "P38_2", "P38_3", "P38_4", "P38_5", "P38_6", "P38_7",
"P39_0", "P39_1", "P39_2", "P39_3", "P39_4", "P39_5", "P39_6", "P39_7",
"P40_0", "P40_1", "P40_2", "P40_3", "P40_4", "P40_5", "P40_6", "P40_7",
"P41_0", "P41_1", "P41_2", "P41_3", "P41_4", "P41_5", "P41_6", "P41_7",
"P42_0", "P42_1", "P42_2", "P42_3", "P42_4", "P42_5", "P42_6", "P42_7",
"P43_0", "P43_1", "P43_2", "P43_3", "P43_4", "P43_5", "P43_6", "P43_7",
"P44_0", "P44_1", "P44_2", "P44_3", "P44_4", "P44_5", "P44_6", "P44_7",
"P45_0", "P45_1", "P45_2", "P45_3", "P45_4", "P45_5", "P45_6", "P45_7",
"P46_0", "P46_1", "P46_2", "P46_3", "P46_4", "P46_5", "P46_6", "P46_7",
"P47_0", "P47_1", "P47_2", "P47_3", "P47_4", "P47_5", "P47_6", "P47_7",
"P48_0", "P48_1", "P48_2", "P48_3", "P48_4", "P48_5", "P48_6", "P48_7",
};
static const u32 r9a07g044_gpio_configs[] = {
RZG2L_GPIO_PORT_PACK(2, 0x10, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x11, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x12, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x13, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x14, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(3, 0x15, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x16, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(3, 0x17, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(3, 0x18, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x19, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x1a, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x1b, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x1c, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(3, 0x1d, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x1e, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x1f, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x20, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(3, 0x21, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x22, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x23, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(3, 0x24, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x25, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x26, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x27, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x28, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x29, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x2a, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x2b, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x2c, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH0)),
RZG2L_GPIO_PORT_PACK(2, 0x2d, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x2e, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x2f, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x30, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x31, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x32, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x33, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x34, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(3, 0x35, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IO_VMC_ETH1)),
RZG2L_GPIO_PORT_PACK(2, 0x36, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(3, 0x37, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(3, 0x38, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(2, 0x39, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(5, 0x3a, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(4, 0x3b, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(4, 0x3c, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(4, 0x3d, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(4, 0x3e, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(4, 0x3f, RZG2L_MPXED_PIN_FUNCS),
RZG2L_GPIO_PORT_PACK(5, 0x40, RZG2L_MPXED_PIN_FUNCS),
};
static const struct {
struct rzg2l_dedicated_configs common[35];
struct rzg2l_dedicated_configs rzg2l_pins[7];
} rzg2l_dedicated_pins = {
.common = {
{ "NMI", RZG2L_SINGLE_PIN_PACK(0x1, 0,
(PIN_CFG_FILONOFF | PIN_CFG_FILNUM | PIN_CFG_FILCLKSEL)) },
{ "TMS/SWDIO", RZG2L_SINGLE_PIN_PACK(0x2, 0,
(PIN_CFG_IOLH_A | PIN_CFG_SR | PIN_CFG_IEN)) },
{ "TDO", RZG2L_SINGLE_PIN_PACK(0x3, 0,
(PIN_CFG_IOLH_A | PIN_CFG_SR | PIN_CFG_IEN)) },
{ "AUDIO_CLK1", RZG2L_SINGLE_PIN_PACK(0x4, 0, PIN_CFG_IEN) },
{ "AUDIO_CLK2", RZG2L_SINGLE_PIN_PACK(0x4, 1, PIN_CFG_IEN) },
{ "SD0_CLK", RZG2L_SINGLE_PIN_PACK(0x6, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_CMD", RZG2L_SINGLE_PIN_PACK(0x6, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_RST#", RZG2L_SINGLE_PIN_PACK(0x6, 2,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA0", RZG2L_SINGLE_PIN_PACK(0x7, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA1", RZG2L_SINGLE_PIN_PACK(0x7, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA2", RZG2L_SINGLE_PIN_PACK(0x7, 2,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA3", RZG2L_SINGLE_PIN_PACK(0x7, 3,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA4", RZG2L_SINGLE_PIN_PACK(0x7, 4,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA5", RZG2L_SINGLE_PIN_PACK(0x7, 5,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA6", RZG2L_SINGLE_PIN_PACK(0x7, 6,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD0_DATA7", RZG2L_SINGLE_PIN_PACK(0x7, 7,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD0)) },
{ "SD1_CLK", RZG2L_SINGLE_PIN_PACK(0x8, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_SD1)) },
{ "SD1_CMD", RZG2L_SINGLE_PIN_PACK(0x8, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
{ "SD1_DATA0", RZG2L_SINGLE_PIN_PACK(0x9, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
{ "SD1_DATA1", RZG2L_SINGLE_PIN_PACK(0x9, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
{ "SD1_DATA2", RZG2L_SINGLE_PIN_PACK(0x9, 2,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
{ "SD1_DATA3", RZG2L_SINGLE_PIN_PACK(0x9, 3,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IEN | PIN_CFG_IO_VMC_SD1)) },
{ "QSPI0_SPCLK", RZG2L_SINGLE_PIN_PACK(0xa, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI0_IO0", RZG2L_SINGLE_PIN_PACK(0xa, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI0_IO1", RZG2L_SINGLE_PIN_PACK(0xa, 2,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI0_IO2", RZG2L_SINGLE_PIN_PACK(0xa, 3,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI0_IO3", RZG2L_SINGLE_PIN_PACK(0xa, 4,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI0_SSL", RZG2L_SINGLE_PIN_PACK(0xa, 5,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI_RESET#", RZG2L_SINGLE_PIN_PACK(0xc, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI_WP#", RZG2L_SINGLE_PIN_PACK(0xc, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "WDTOVF_PERROUT#", RZG2L_SINGLE_PIN_PACK(0xd, 0, (PIN_CFG_IOLH_A | PIN_CFG_SR)) },
{ "RIIC0_SDA", RZG2L_SINGLE_PIN_PACK(0xe, 0, PIN_CFG_IEN) },
{ "RIIC0_SCL", RZG2L_SINGLE_PIN_PACK(0xe, 1, PIN_CFG_IEN) },
{ "RIIC1_SDA", RZG2L_SINGLE_PIN_PACK(0xe, 2, PIN_CFG_IEN) },
{ "RIIC1_SCL", RZG2L_SINGLE_PIN_PACK(0xe, 3, PIN_CFG_IEN) },
},
.rzg2l_pins = {
{ "QSPI_INT#", RZG2L_SINGLE_PIN_PACK(0xc, 2, (PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_SPCLK", RZG2L_SINGLE_PIN_PACK(0xb, 0,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_IO0", RZG2L_SINGLE_PIN_PACK(0xb, 1,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_IO1", RZG2L_SINGLE_PIN_PACK(0xb, 2,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_IO2", RZG2L_SINGLE_PIN_PACK(0xb, 3,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_IO3", RZG2L_SINGLE_PIN_PACK(0xb, 4,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
{ "QSPI1_SSL", RZG2L_SINGLE_PIN_PACK(0xb, 5,
(PIN_CFG_IOLH_B | PIN_CFG_SR | PIN_CFG_IO_VMC_QSPI)) },
}
};
static void rzg2l_rmw_pin_config(const struct rzg2l_pfc_data *data, u32 offset,
u8 pin, u32 mask, u32 val)
{
void __iomem *addr = data->base + offset;
/* handle _L/_H for 32-bit register read/write */
if (pin >= 4) {
pin -= 4;
addr += 4;
}
clrsetbits_le32(addr, mask << (pin * 8), val << (pin * 8));
}
static int rzg2l_get_pins_count(struct udevice *dev)
{
const struct rzg2l_pfc_data *data =
(const struct rzg2l_pfc_data *)dev_get_driver_data(dev);
return data->num_dedicated_pins + data->num_pins;
}
static const char *rzg2l_get_pin_name(struct udevice *dev, unsigned int selector)
{
const struct rzg2l_pfc_data *data =
(const struct rzg2l_pfc_data *)dev_get_driver_data(dev);
int port;
u8 pin;
if (selector < data->num_dedicated_pins) {
if (selector >= ARRAY_SIZE(rzg2l_dedicated_pins.common)) {
unsigned int u = selector - ARRAY_SIZE(rzg2l_dedicated_pins.common);
return rzg2l_dedicated_pins.rzg2l_pins[u].name;
} else {
return rzg2l_dedicated_pins.common[selector].name;
}
}
port = rzg2l_selector_decode(data, selector, &pin);
if (port < 0)
return "(invalid pin)";
return rzg2l_gpio_names[pin + 8 * port];
}
static int rzg2l_pinconf_set(struct udevice *dev, unsigned int pin_selector,
unsigned int param, unsigned int argument)
{
const struct rzg2l_pfc_data *data =
(const struct rzg2l_pfc_data *)dev_get_driver_data(dev);
u32 cfg, port_offset;
u8 pin;
if (pin_selector >= data->num_dedicated_pins) {
/* The pin selector refers to a multiplexed pin */
int port = rzg2l_selector_decode(data, pin_selector, &pin);
if (port < 0) {
dev_err(dev, "Invalid pin selector %u:%u\n", port, pin);
return port;
}
cfg = data->gpio_configs[port];
port_offset = P(port);
} else {
/* The pin selector refers to a dedicated function pin */
const struct rzg2l_dedicated_configs *dedicated_config;
if (pin_selector >= data->num_dedicated_pins) {
dev_err(dev, "Invalid dedicated pin %u\n", pin_selector);
return -EINVAL;
}
if (pin_selector >= ARRAY_SIZE(rzg2l_dedicated_pins.common)) {
pin_selector -= ARRAY_SIZE(rzg2l_dedicated_pins.common);
dedicated_config = &rzg2l_dedicated_pins.rzg2l_pins[pin_selector];
} else {
dedicated_config = &rzg2l_dedicated_pins.common[pin_selector];
}
port_offset = RZG2L_SINGLE_PIN_GET_PORT_OFFSET(dedicated_config->config);
pin = RZG2L_SINGLE_PIN_GET_BIT(dedicated_config->config);
cfg = RZG2L_SINGLE_PIN_GET_CFGS(dedicated_config->config);
}
switch (param) {
case PIN_CONFIG_INPUT_ENABLE: {
if (!(cfg & PIN_CFG_IEN)) {
dev_err(dev, "pin does not support IEN\n");
return -EINVAL;
}
dev_dbg(dev, "port off %u:%u set IEN=%u\n",
port_offset, pin, argument);
rzg2l_rmw_pin_config(data, IEN(port_offset), pin, IEN_MASK, !!argument);
break;
}
case PIN_CONFIG_POWER_SOURCE: {
u32 pwr_reg = 0x0;
/* argument is in mV */
if (argument != 1800 && argument != 3300) {
dev_err(dev, "Invalid mV %u\n", argument);
return -EINVAL;
}
/*
* TODO: PIN_CFG_IO_VMC_ETH0 & PIN_CFG_IO_VMC_ETH1 will be
* handled when the RZ/G2L Ethernet driver is added.
*/
if (cfg & PIN_CFG_IO_VMC_SD0) {
dev_dbg(dev, "port off %u:%u set SD_CH 0 PVDD=%u\n",
port_offset, pin, argument);
pwr_reg = SD_CH(0);
} else if (cfg & PIN_CFG_IO_VMC_SD1) {
dev_dbg(dev, "port off %u:%u set SD_CH 1 PVDD=%u\n",
port_offset, pin, argument);
pwr_reg = SD_CH(1);
} else if (cfg & PIN_CFG_IO_VMC_QSPI) {
dev_dbg(dev, "port off %u:%u set QSPI PVDD=%u\n",
port_offset, pin, argument);
pwr_reg = QSPI;
} else {
dev_dbg(dev, "pin power source is not selectable\n");
return -EINVAL;
}
writel((argument == 1800) ? PVDD_1800 : PVDD_3300,
data->base + pwr_reg);
break;
}
default:
dev_err(dev, "Invalid pinconf parameter\n");
return -EOPNOTSUPP;
}
return 0;
}
static int rzg2l_pinmux_property_set(struct udevice *dev, u32 pinmux_group)
{
const struct rzg2l_pfc_data *data =
(const struct rzg2l_pfc_data *)dev_get_driver_data(dev);
u32 port, pin, func, pfc_state;
u8 pmc_state;
func = RZG2L_PINMUX_TO_FUNC(pinmux_group);
if (func > 5) {
dev_err(dev, "Invalid pin function %u\n", func);
return -EINVAL;
}
port = RZG2L_PINMUX_TO_PORT(pinmux_group);
pin = RZG2L_PINMUX_TO_PIN(pinmux_group);
if (!rzg2l_port_validate(data, port, pin)) {
dev_err(dev, "Invalid pin selector %u:%u\n", port, pin);
return -EINVAL;
}
/* Check current PMC & PFC to decide if we need to change anything. */
pmc_state = readb(data->base + PMC(port)) & BIT(pin);
pfc_state = (readl(data->base + PFC(port)) >> (pin * 4)) & PFC_MASK;
if (pmc_state && pfc_state == func)
return 0;
dev_dbg(dev, "pinmux port %u pin %u func %u\n", port, pin, func);
/* Set pin to 'Non-use (Hi-Z input protection)' */
clrbits_le16(data->base + PM(port), PM_MASK << (pin * 2));
/* Temporarily switch to GPIO mode with PMC register */
clrbits_8(data->base + PMC(port), BIT(pin));
/* Set the PWPR register to allow PFC register to write */
writel(0x0, data->base + PWPR); /* B0WI=0, PFCWE=0 */
writel(PWPR_PFCWE, data->base + PWPR); /* B0WI=0, PFCWE=1 */
/* Select Pin function mode with PFC register */
clrsetbits_le32(data->base + PFC(port), PFC_MASK << (pin * 4),
func << (pin * 4));
/* Set the PWPR register to be write-protected */
writel(0x0, data->base + PWPR); /* B0WI=0, PFCWE=0 */
writel(PWPR_B0WI, data->base + PWPR); /* B0WI=1, PFCWE=0 */
/* Switch to Peripheral pin function with PMC register */
setbits_8(data->base + PMC(port), BIT(pin));
return rzg2l_selector_encode(data, port, pin);
}
static int rzg2l_get_pin_muxing(struct udevice *dev, unsigned int selector,
char *buf, int size)
{
const struct rzg2l_pfc_data *data =
(const struct rzg2l_pfc_data *)dev_get_driver_data(dev);
u32 pmc_state;
int port;
u8 pin;
if (selector < data->num_dedicated_pins) {
snprintf(buf, size, rzg2l_get_pin_name(dev, selector));
return 0;
}
port = rzg2l_selector_decode(data, selector, &pin);
if (port < 0) {
dev_err(dev, "Invalid pin selector %u:%u\n", port, pin);
return port;
}
pmc_state = readb(data->base + PMC(port)) & BIT(pin);
if (pmc_state) {
u32 pfc_state = (readl(data->base + PFC(port)) >> (pin * 4)) & PFC_MASK;
snprintf(buf, size, "Function %d", pfc_state);
return 0;
}
snprintf(buf, size, "GPIO");
return 0;
}
static const struct pinconf_param rzg2l_pinconf_params[] = {
{ "input-enable", PIN_CONFIG_INPUT_ENABLE, 1 },
{ "power-source", PIN_CONFIG_POWER_SOURCE, 3300 /* mV */ },
};
static const struct pinctrl_ops rzg2l_pinctrl_ops = {
.get_pins_count = rzg2l_get_pins_count,
.get_pin_name = rzg2l_get_pin_name,
.pinconf_num_params = ARRAY_SIZE(rzg2l_pinconf_params),
.pinconf_params = rzg2l_pinconf_params,
.pinconf_set = rzg2l_pinconf_set,
.pinmux_property_set = rzg2l_pinmux_property_set,
.set_state = pinctrl_generic_set_state,
.get_pin_muxing = rzg2l_get_pin_muxing,
};
static int rzg2l_pinctrl_probe(struct udevice *dev)
{
return rzg2l_pfc_enable(dev);
}
U_BOOT_DRIVER(rzg2l_pfc_pinctrl) = {
.name = "rzg2l-pfc-pinctrl",
.id = UCLASS_PINCTRL,
.ops = &rzg2l_pinctrl_ops,
.probe = rzg2l_pinctrl_probe,
};
static const struct rzg2l_pfc_driver_data r9a07g044_driver_data = {
.num_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins.common) +
ARRAY_SIZE(rzg2l_dedicated_pins.rzg2l_pins),
.num_ports = ARRAY_SIZE(r9a07g044_gpio_configs),
.gpio_configs = r9a07g044_gpio_configs,
};
static const struct udevice_id rzg2l_pfc_ids[] = {
{ .compatible = "renesas,r9a07g044-pinctrl", .data = (ulong)&r9a07g044_driver_data },
{ /* sentinel */ }
};
static int rzg2l_pfc_bind(struct udevice *parent)
{
struct rzg2l_pfc_driver_data *driver_data;
struct rzg2l_pfc_data *data;
struct udevice *pinctrl_dev;
struct driver *drv;
unsigned int i;
int ret;
driver_data =
(struct rzg2l_pfc_driver_data *)dev_get_driver_data(parent);
if (!driver_data)
return -EINVAL;
data = devm_kmalloc(parent, sizeof(*data), 0);
if (!data)
return -ENOMEM;
data->base = dev_read_addr_ptr(parent);
if (!data->base)
return -EINVAL;
data->num_dedicated_pins = driver_data->num_dedicated_pins;
data->num_ports = driver_data->num_ports;
data->gpio_configs = driver_data->gpio_configs;
data->num_pins = 0;
for (i = 0; i < data->num_ports; i++)
data->num_pins += RZG2L_GPIO_PORT_GET_PINCNT(data->gpio_configs[i]);
dev_dbg(parent, "%u dedicated pins, %u muxed ports, %u muxed pins\n",
data->num_dedicated_pins, data->num_ports, data->num_pins);
drv = lists_driver_lookup_name("rzg2l-pfc-pinctrl");
if (!drv)
return -ENOENT;
ret = device_bind_with_driver_data(parent, drv, parent->name,
(ulong)data, dev_ofnode(parent),
&pinctrl_dev);
if (!ret && IS_ENABLED(CONFIG_RZG2L_GPIO)) {
drv = lists_driver_lookup_name("rzg2l-pfc-gpio");
if (!drv) {
device_unbind(pinctrl_dev);
return -ENOENT;
}
ret = device_bind_with_driver_data(parent, drv, parent->name,
(ulong)data,
dev_ofnode(parent), NULL);
if (ret)
device_unbind(pinctrl_dev);
}
return ret;
}
U_BOOT_DRIVER(rzg2l_pfc) = {
.name = "rzg2l-pfc",
.id = UCLASS_NOP,
.of_match = rzg2l_pfc_ids,
.bind = rzg2l_pfc_bind,
};
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