// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* serdes-pinctrl.c -- serdes pin control driver.
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*
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* Copyright (c) 2023-2028 Rockchip Electronics Co. Ltd.
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*
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* Author: luowei <lw@rock-chips.com>
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*/
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#include <serdes-display-core.h>
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static const struct pinconf_param serdes_conf_params[] = {
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{ "bias-disable", PIN_CONFIG_BIAS_DISABLE, 0 },
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{ "bias-high-impedance", PIN_CONFIG_BIAS_HIGH_IMPEDANCE, 0 },
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{ "bias-bus-hold", PIN_CONFIG_BIAS_BUS_HOLD, 0 },
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{ "bias-pull-up", PIN_CONFIG_BIAS_PULL_UP, 1 },
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{ "bias-pull-down", PIN_CONFIG_BIAS_PULL_DOWN, 1 },
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{ "bias-pull-pin-default", PIN_CONFIG_BIAS_PULL_PIN_DEFAULT, 1 },
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{ "drive-open-drain", PIN_CONFIG_DRIVE_OPEN_DRAIN, 0 },
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{ "drive-open-source", PIN_CONFIG_DRIVE_OPEN_SOURCE, 0 },
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{ "drive-strength", PIN_CONFIG_DRIVE_STRENGTH, 0 },
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{ "input-enable", PIN_CONFIG_INPUT_ENABLE, 1 },
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{ "input-disable", PIN_CONFIG_INPUT_ENABLE, 0 },
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};
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static int serdes_pinctrl_get_pins_count(struct udevice *dev)
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{
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struct serdes *serdes = dev_get_priv(dev->parent);
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if (serdes->chip_data->pinctrl_info->num_pins)
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return serdes->chip_data->pinctrl_info->num_pins;
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else
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return 0;
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}
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static const char *serdes_pinctrl_get_pin_name(struct udevice *dev,
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unsigned int selector)
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{
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struct serdes *serdes = dev_get_priv(dev->parent);
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if (serdes->chip_data->pinctrl_info->pins[selector].name)
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return serdes->chip_data->pinctrl_info->pins[selector].name;
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else
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return "unknow-pin";
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}
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static int serdes_pinctrl_get_groups_count(struct udevice *dev)
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{
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struct serdes *serdes = dev_get_priv(dev->parent);
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if (serdes->chip_data->pinctrl_info->num_groups)
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return serdes->chip_data->pinctrl_info->num_groups;
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else
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return 0;
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}
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static const char *serdes_pinctrl_get_group_name(struct udevice *dev,
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unsigned int selector)
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{
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struct serdes *serdes = dev_get_priv(dev->parent);
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if (serdes->chip_data->pinctrl_info->groups[selector].name)
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return serdes->chip_data->pinctrl_info->groups[selector].name;
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else
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return "unknow-group";
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}
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static int serdes_pinctrl_get_functions_count(struct udevice *dev)
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{
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struct serdes *serdes = dev_get_priv(dev->parent);
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if (serdes->chip_data->pinctrl_info->num_functions)
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return serdes->chip_data->pinctrl_info->num_functions;
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else
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return 0;
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}
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static const char *serdes_pinctrl_get_function_name(struct udevice *dev,
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unsigned int selector)
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{
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struct serdes *serdes = dev_get_priv(dev->parent);
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if (serdes->chip_data->pinctrl_info->functions[selector].name)
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return serdes->chip_data->pinctrl_info->functions[selector].name;
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else
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return "unknow-function";
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}
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static int serdes_pinmux_set_mux(struct udevice *dev,
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unsigned int pin_selector,
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unsigned int func_selector)
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{
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struct serdes *serdes = dev_get_priv(dev->parent);
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int ret = 0;
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if (serdes->chip_data->pinctrl_ops->pinmux_set)
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ret = serdes->chip_data->pinctrl_ops->pinmux_set(serdes,
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pin_selector, func_selector);
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SERDES_DBG_MFD("%s: %s pin=%d,func=%d\n", __func__,
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serdes->chip_data->name, pin_selector, func_selector);
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return ret;
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}
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static int serdes_pinmux_group_set_mux(struct udevice *dev,
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unsigned int group_selector,
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unsigned int func_selector)
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{
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struct serdes *serdes = dev_get_priv(dev->parent);
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int ret = 0;
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if (serdes->chip_data->pinctrl_ops->pinmux_group_set)
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ret = serdes->chip_data->pinctrl_ops->pinmux_group_set(serdes,
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group_selector, func_selector);
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SERDES_DBG_MFD("%s: %s function=%d,group=%d\n", __func__,
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serdes->chip_data->name, func_selector, group_selector);
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return ret;
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}
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static int serdes_pinconf_set(struct udevice *dev, unsigned int pin_selector,
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unsigned int param, unsigned int argument)
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{
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int ret = 0;
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struct serdes *serdes = dev_get_priv(dev->parent);
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if (serdes->chip_data->pinctrl_ops->pinconf_set)
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ret = serdes->chip_data->pinctrl_ops->pinconf_set(serdes,
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pin_selector, param, argument);
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SERDES_DBG_MFD("serdes: pin = %d (%s), param = %d, arg = %d\n",
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pin_selector,
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serdes_pinctrl_get_pin_name(dev, pin_selector),
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param, argument);
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return ret;
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}
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static int serdes_pinconf_group_set(struct udevice *dev,
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unsigned int group_selector,
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unsigned int param, unsigned int argument)
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{
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int ret = 0;
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struct serdes *serdes = dev_get_priv(dev->parent);
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if (serdes->chip_data->pinctrl_ops->pinconf_group_set)
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ret = serdes->chip_data->pinctrl_ops->pinconf_group_set(serdes,
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group_selector, param, argument);
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SERDES_DBG_MFD("serdes: group = %d (%s), param = %d, arg = %d\n",
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group_selector,
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serdes_pinctrl_get_group_name(dev, group_selector),
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param, argument);
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return ret;
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}
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static struct pinctrl_ops serdes_pinctrl_ops = {
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.get_pins_count = serdes_pinctrl_get_pins_count,
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.get_pin_name = serdes_pinctrl_get_pin_name,
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.get_groups_count = serdes_pinctrl_get_groups_count,
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.get_group_name = serdes_pinctrl_get_group_name,
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.get_functions_count = serdes_pinctrl_get_functions_count,
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.get_function_name = serdes_pinctrl_get_function_name,
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.set_state = pinctrl_generic_set_state,
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.pinmux_set = serdes_pinmux_set_mux,
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.pinmux_group_set = serdes_pinmux_group_set_mux,
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.pinconf_num_params = ARRAY_SIZE(serdes_conf_params),
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.pinconf_params = serdes_conf_params,
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.pinconf_set = serdes_pinconf_set,
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.pinconf_group_set = serdes_pinconf_group_set,
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};
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int serdes_pinctrl_probe(struct udevice *dev)
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{
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struct serdes *serdes = dev_get_priv(dev->parent);
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struct serdes_pinctrl *serdes_pinctrl = serdes->serdes_pinctrl;
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int ret = 0;
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SERDES_DBG_MFD("%s: %s %s start\n", __func__, dev->name,
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serdes->chip_data->name);
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serdes_pinctrl->parent = serdes;
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ret = serdes_gpio_register(dev, serdes);
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if (ret)
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return ret;
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return 0;
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}
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static const struct udevice_id serdes_of_match[] = {
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#if IS_ENABLED(CONFIG_SERDES_DISPLAY_CHIP_ROHM_BU18TL82)
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{ .compatible = "rohm,bu18tl82-pinctrl" },
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#endif
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#if IS_ENABLED(CONFIG_SERDES_DISPLAY_CHIP_ROHM_BU18RL82)
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{ .compatible = "rohm,bu18rl82-pinctrl" },
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#endif
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#if IS_ENABLED(CONFIG_SERDES_DISPLAY_CHIP_MAXIM_MAX96745)
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{ .compatible = "maxim,max96745-pinctrl", },
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#endif
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#if IS_ENABLED(CONFIG_SERDES_DISPLAY_CHIP_MAXIM_MAX96755)
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{ .compatible = "maxim,max96755-pinctrl" },
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#endif
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#if IS_ENABLED(CONFIG_SERDES_DISPLAY_CHIP_ROCKCHIP_RKX111)
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{ .compatible = "rockchip,rkx111-pinctrl" },
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#endif
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{ }
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};
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U_BOOT_DRIVER(serdes_pinctrl) = {
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.name = "serdes-pinctrl",
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.id = UCLASS_PINCTRL,
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.of_match = serdes_of_match,
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.probe = serdes_pinctrl_probe,
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.ops = &serdes_pinctrl_ops,
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.priv_auto_alloc_size = sizeof(struct serdes_pinctrl),
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};
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