mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-18 16:08:53 +09:00
![Walter Lozano](/assets/img/avatar_default.png)
When using OF_PLATDATA, the bind process between devices and drivers is performed trying to match compatible string with driver names. However driver names are not strictly defined, and also there are different names used when declaring a driver with U_BOOT_DRIVER, the name of the symbol used in the linker list and the used in the struct driver_info. In order to make things a bit more clear, rename the drivers names. This will also help for further OF_PLATDATA improvements, such as checking for valid driver names. Signed-off-by: Walter Lozano <walter.lozano@collabora.com> Reviewed-by: Simon Glass <sjg@chromium.org> Add a fix for sandbox of-platdata to avoid using an invalid ANSI colour: Signed-off-by: Simon Glass <sjg@chromium.org>
185 lines
4.7 KiB
C
185 lines
4.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2019 Rockchip Electronics Co., Ltd
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <dm/pinctrl.h>
|
|
#include <regmap.h>
|
|
#include <syscon.h>
|
|
|
|
#include "pinctrl-rockchip.h"
|
|
|
|
static int rk3368_set_mux(struct rockchip_pin_bank *bank, int pin, int mux)
|
|
{
|
|
struct rockchip_pinctrl_priv *priv = bank->priv;
|
|
int iomux_num = (pin / 8);
|
|
struct regmap *regmap;
|
|
int reg, ret, mask, mux_type;
|
|
u8 bit;
|
|
u32 data;
|
|
|
|
regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU)
|
|
? priv->regmap_pmu : priv->regmap_base;
|
|
|
|
/* get basic quadrupel of mux registers and the correct reg inside */
|
|
mux_type = bank->iomux[iomux_num].type;
|
|
reg = bank->iomux[iomux_num].offset;
|
|
reg += rockchip_get_mux_data(mux_type, pin, &bit, &mask);
|
|
|
|
data = (mask << (bit + 16));
|
|
data |= (mux & mask) << bit;
|
|
ret = regmap_write(regmap, reg, data);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define RK3368_PULL_GRF_OFFSET 0x100
|
|
#define RK3368_PULL_PMU_OFFSET 0x10
|
|
|
|
static void rk3368_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank,
|
|
int pin_num, struct regmap **regmap,
|
|
int *reg, u8 *bit)
|
|
{
|
|
struct rockchip_pinctrl_priv *priv = bank->priv;
|
|
|
|
/* The first 32 pins of the first bank are located in PMU */
|
|
if (bank->bank_num == 0) {
|
|
*regmap = priv->regmap_pmu;
|
|
*reg = RK3368_PULL_PMU_OFFSET;
|
|
} else {
|
|
*regmap = priv->regmap_base;
|
|
*reg = RK3368_PULL_GRF_OFFSET;
|
|
|
|
/* correct the offset, as we're starting with the 2nd bank */
|
|
*reg -= 0x10;
|
|
*reg += bank->bank_num * ROCKCHIP_PULL_BANK_STRIDE;
|
|
}
|
|
|
|
*reg += ((pin_num / ROCKCHIP_PULL_PINS_PER_REG) * 4);
|
|
|
|
*bit = (pin_num % ROCKCHIP_PULL_PINS_PER_REG);
|
|
*bit *= ROCKCHIP_PULL_BITS_PER_PIN;
|
|
}
|
|
|
|
static int rk3368_set_pull(struct rockchip_pin_bank *bank,
|
|
int pin_num, int pull)
|
|
{
|
|
struct regmap *regmap;
|
|
int reg, ret;
|
|
u8 bit, type;
|
|
u32 data;
|
|
|
|
if (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT)
|
|
return -ENOTSUPP;
|
|
|
|
rk3368_calc_pull_reg_and_bit(bank, pin_num, ®map, ®, &bit);
|
|
type = bank->pull_type[pin_num / 8];
|
|
ret = rockchip_translate_pull_value(type, pull);
|
|
if (ret < 0) {
|
|
debug("unsupported pull setting %d\n", pull);
|
|
return ret;
|
|
}
|
|
|
|
/* enable the write to the equivalent lower bits */
|
|
data = ((1 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << (bit + 16);
|
|
data |= (ret << bit);
|
|
ret = regmap_write(regmap, reg, data);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define RK3368_DRV_PMU_OFFSET 0x20
|
|
#define RK3368_DRV_GRF_OFFSET 0x200
|
|
|
|
static void rk3368_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank,
|
|
int pin_num, struct regmap **regmap,
|
|
int *reg, u8 *bit)
|
|
{
|
|
struct rockchip_pinctrl_priv *priv = bank->priv;
|
|
|
|
/* The first 32 pins of the first bank are located in PMU */
|
|
if (bank->bank_num == 0) {
|
|
*regmap = priv->regmap_pmu;
|
|
*reg = RK3368_DRV_PMU_OFFSET;
|
|
} else {
|
|
*regmap = priv->regmap_base;
|
|
*reg = RK3368_DRV_GRF_OFFSET;
|
|
|
|
/* correct the offset, as we're starting with the 2nd bank */
|
|
*reg -= 0x10;
|
|
*reg += bank->bank_num * ROCKCHIP_DRV_BANK_STRIDE;
|
|
}
|
|
|
|
*reg += ((pin_num / ROCKCHIP_DRV_PINS_PER_REG) * 4);
|
|
*bit = (pin_num % ROCKCHIP_DRV_PINS_PER_REG);
|
|
*bit *= ROCKCHIP_DRV_BITS_PER_PIN;
|
|
}
|
|
|
|
static int rk3368_set_drive(struct rockchip_pin_bank *bank,
|
|
int pin_num, int strength)
|
|
{
|
|
struct regmap *regmap;
|
|
int reg, ret;
|
|
u32 data;
|
|
u8 bit;
|
|
int type = bank->drv[pin_num / 8].drv_type;
|
|
|
|
rk3368_calc_drv_reg_and_bit(bank, pin_num, ®map, ®, &bit);
|
|
ret = rockchip_translate_drive_value(type, strength);
|
|
if (ret < 0) {
|
|
debug("unsupported driver strength %d\n", strength);
|
|
return ret;
|
|
}
|
|
|
|
/* enable the write to the equivalent lower bits */
|
|
data = ((1 << ROCKCHIP_DRV_BITS_PER_PIN) - 1) << (bit + 16);
|
|
data |= (ret << bit);
|
|
ret = regmap_write(regmap, reg, data);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct rockchip_pin_bank rk3368_pin_banks[] = {
|
|
PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", IOMUX_SOURCE_PMU,
|
|
IOMUX_SOURCE_PMU,
|
|
IOMUX_SOURCE_PMU,
|
|
IOMUX_SOURCE_PMU
|
|
),
|
|
PIN_BANK(1, 32, "gpio1"),
|
|
PIN_BANK(2, 32, "gpio2"),
|
|
PIN_BANK(3, 32, "gpio3"),
|
|
};
|
|
|
|
static struct rockchip_pin_ctrl rk3368_pin_ctrl = {
|
|
.pin_banks = rk3368_pin_banks,
|
|
.nr_banks = ARRAY_SIZE(rk3368_pin_banks),
|
|
.grf_mux_offset = 0x0,
|
|
.pmu_mux_offset = 0x0,
|
|
.set_mux = rk3368_set_mux,
|
|
.set_pull = rk3368_set_pull,
|
|
.set_drive = rk3368_set_drive,
|
|
};
|
|
|
|
static const struct udevice_id rk3368_pinctrl_ids[] = {
|
|
{
|
|
.compatible = "rockchip,rk3368-pinctrl",
|
|
.data = (ulong)&rk3368_pin_ctrl
|
|
},
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(rockchip_rk3368_pinctrl) = {
|
|
.name = "rockchip_rk3368_pinctrl",
|
|
.id = UCLASS_PINCTRL,
|
|
.of_match = rk3368_pinctrl_ids,
|
|
.priv_auto_alloc_size = sizeof(struct rockchip_pinctrl_priv),
|
|
.ops = &rockchip_pinctrl_ops,
|
|
#if !CONFIG_IS_ENABLED(OF_PLATDATA)
|
|
.bind = dm_scan_fdt_dev,
|
|
#endif
|
|
.probe = rockchip_pinctrl_probe,
|
|
};
|