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// SPDX-License-Identifier: GPL-2.0+
/*
* TLMM driver for Qualcomm APQ8016, APQ8096
*
* (C) Copyright 2018 Ramon Fried <ramon.fried@gmail.com>
*
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <asm/io.h>
#include <dm/device_compat.h>
#include <dm/lists.h>
#include <dm/pinctrl.h>
#include <linux/bitops.h>
#include "pinctrl-snapdragon.h"
struct msm_pinctrl_priv {
phys_addr_t base;
struct msm_pinctrl_data *data;
};
#define GPIO_CONFIG_OFFSET(x) ((x) * 0x1000)
#define TLMM_GPIO_PULL_MASK GENMASK(1, 0)
#define TLMM_FUNC_SEL_MASK GENMASK(5, 2)
#define TLMM_DRV_STRENGTH_MASK GENMASK(8, 6)
#define TLMM_GPIO_DISABLE BIT(9)
static const struct pinconf_param msm_conf_params[] = {
{ "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 2 },
{ "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
{ "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 3 },
};
static int msm_get_functions_count(struct udevice *dev)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
return priv->data->functions_count;
}
static int msm_get_pins_count(struct udevice *dev)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
return priv->data->pin_count;
}
static const char *msm_get_function_name(struct udevice *dev,
unsigned int selector)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
return priv->data->get_function_name(dev, selector);
}
static int msm_pinctrl_probe(struct udevice *dev)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
priv->base = dev_read_addr(dev);
priv->data = (struct msm_pinctrl_data *)dev->driver_data;
return priv->base == FDT_ADDR_T_NONE ? -EINVAL : 0;
}
static const char *msm_get_pin_name(struct udevice *dev, unsigned int selector)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
return priv->data->get_pin_name(dev, selector);
}
static int msm_pinmux_set(struct udevice *dev, unsigned int pin_selector,
unsigned int func_selector)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
clrsetbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
TLMM_FUNC_SEL_MASK | TLMM_GPIO_DISABLE,
priv->data->get_function_mux(func_selector) << 2);
return 0;
}
static int msm_pinconf_set(struct udevice *dev, unsigned int pin_selector,
unsigned int param, unsigned int argument)
{
struct msm_pinctrl_priv *priv = dev_get_priv(dev);
switch (param) {
case PIN_CONFIG_DRIVE_STRENGTH:
argument = (argument / 2) - 1;
clrsetbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
TLMM_DRV_STRENGTH_MASK, argument << 6);
break;
case PIN_CONFIG_BIAS_DISABLE:
clrbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
TLMM_GPIO_PULL_MASK);
break;
case PIN_CONFIG_BIAS_PULL_UP:
clrsetbits_le32(priv->base + GPIO_CONFIG_OFFSET(pin_selector),
TLMM_GPIO_PULL_MASK, argument);
break;
default:
return 0;
}
return 0;
}
static struct pinctrl_ops msm_pinctrl_ops = {
.get_pins_count = msm_get_pins_count,
.get_pin_name = msm_get_pin_name,
.set_state = pinctrl_generic_set_state,
.pinmux_set = msm_pinmux_set,
.pinconf_num_params = ARRAY_SIZE(msm_conf_params),
.pinconf_params = msm_conf_params,
.pinconf_set = msm_pinconf_set,
.get_functions_count = msm_get_functions_count,
.get_function_name = msm_get_function_name,
};
static int msm_pinctrl_bind(struct udevice *dev)
{
ofnode node = dev_ofnode(dev);
const char *name;
int ret;
ofnode_get_property(node, "gpio-controller", &ret);
if (ret < 0)
return 0;
/* Get the name of gpio node */
name = ofnode_get_name(node);
if (!name)
return -EINVAL;
/* Bind gpio node */
ret = device_bind_driver_to_node(dev, "gpio_msm",
name, node, NULL);
if (ret)
return ret;
dev_dbg(dev, "bind %s\n", name);
return 0;
}
static const struct udevice_id msm_pinctrl_ids[] = {
{ .compatible = "qcom,msm8916-pinctrl", .data = (ulong)&apq8016_data },
{ .compatible = "qcom,msm8996-pinctrl", .data = (ulong)&apq8096_data },
{ .compatible = "qcom,sdm845-pinctrl", .data = (ulong)&sdm845_data },
{ .compatible = "qcom,qcs404-pinctrl", .data = (ulong)&qcs404_data },
{ }
};
U_BOOT_DRIVER(pinctrl_snapdraon) = {
.name = "pinctrl_msm",
.id = UCLASS_PINCTRL,
.of_match = msm_pinctrl_ids,
.priv_auto = sizeof(struct msm_pinctrl_priv),
.ops = &msm_pinctrl_ops,
.probe = msm_pinctrl_probe,
.bind = msm_pinctrl_bind,
};
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