2014-06-19 05:37:08 -06:00
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/*
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* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/phy/phy.h>
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#include <linux/pinctrl/pinctrl.h>
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#include <linux/pinctrl/pinmux.h>
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#include <linux/platform_device.h>
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#include <linux/reset.h>
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2014-10-16 04:12:22 -06:00
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#include <linux/slab.h>
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2014-06-19 05:37:08 -06:00
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#include <dt-bindings/pinctrl/pinctrl-tegra-xusb.h>
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#include "core.h"
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#include "pinctrl-utils.h"
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#define XUSB_PADCTL_ELPG_PROGRAM 0x01c
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#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN (1 << 26)
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#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY (1 << 25)
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#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN (1 << 24)
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#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1 0x040
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#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET (1 << 19)
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#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK (0xf << 12)
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#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST (1 << 1)
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#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2 0x044
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#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN (1 << 6)
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#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN (1 << 5)
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#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL (1 << 4)
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#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1 0x138
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#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET (1 << 27)
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#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE (1 << 24)
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#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD (1 << 3)
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#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST (1 << 1)
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#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ (1 << 0)
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#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1 0x148
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#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD (1 << 1)
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#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ (1 << 0)
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struct tegra_xusb_padctl_function {
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const char *name;
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const char * const *groups;
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unsigned int num_groups;
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};
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struct tegra_xusb_padctl_group {
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const unsigned int *funcs;
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unsigned int num_funcs;
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};
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struct tegra_xusb_padctl_soc {
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const struct pinctrl_pin_desc *pins;
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unsigned int num_pins;
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const struct tegra_xusb_padctl_function *functions;
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unsigned int num_functions;
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const struct tegra_xusb_padctl_lane *lanes;
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unsigned int num_lanes;
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};
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struct tegra_xusb_padctl_lane {
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const char *name;
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unsigned int offset;
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unsigned int shift;
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unsigned int mask;
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unsigned int iddq;
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const unsigned int *funcs;
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unsigned int num_funcs;
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};
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struct tegra_xusb_padctl {
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struct device *dev;
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void __iomem *regs;
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struct mutex lock;
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struct reset_control *rst;
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const struct tegra_xusb_padctl_soc *soc;
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struct pinctrl_dev *pinctrl;
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struct pinctrl_desc desc;
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struct phy_provider *provider;
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struct phy *phys[2];
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unsigned int enable;
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};
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static inline void padctl_writel(struct tegra_xusb_padctl *padctl, u32 value,
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unsigned long offset)
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{
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writel(value, padctl->regs + offset);
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}
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static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl,
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unsigned long offset)
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{
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return readl(padctl->regs + offset);
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}
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static int tegra_xusb_padctl_get_groups_count(struct pinctrl_dev *pinctrl)
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{
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struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
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return padctl->soc->num_pins;
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}
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static const char *tegra_xusb_padctl_get_group_name(struct pinctrl_dev *pinctrl,
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unsigned int group)
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{
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struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
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return padctl->soc->pins[group].name;
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}
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enum tegra_xusb_padctl_param {
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TEGRA_XUSB_PADCTL_IDDQ,
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};
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static const struct tegra_xusb_padctl_property {
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const char *name;
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enum tegra_xusb_padctl_param param;
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} properties[] = {
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{ "nvidia,iddq", TEGRA_XUSB_PADCTL_IDDQ },
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};
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#define TEGRA_XUSB_PADCTL_PACK(param, value) ((param) << 16 | (value))
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#define TEGRA_XUSB_PADCTL_UNPACK_PARAM(config) ((config) >> 16)
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#define TEGRA_XUSB_PADCTL_UNPACK_VALUE(config) ((config) & 0xffff)
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static int tegra_xusb_padctl_parse_subnode(struct tegra_xusb_padctl *padctl,
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struct device_node *np,
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struct pinctrl_map **maps,
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unsigned int *reserved_maps,
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unsigned int *num_maps)
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{
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unsigned int i, reserve = 0, num_configs = 0;
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unsigned long config, *configs = NULL;
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const char *function, *group;
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struct property *prop;
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int err = 0;
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u32 value;
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err = of_property_read_string(np, "nvidia,function", &function);
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if (err < 0) {
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if (err != -EINVAL)
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return err;
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function = NULL;
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}
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for (i = 0; i < ARRAY_SIZE(properties); i++) {
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err = of_property_read_u32(np, properties[i].name, &value);
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if (err < 0) {
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if (err == -EINVAL)
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continue;
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2014-10-16 04:12:22 -06:00
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goto out;
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2014-06-19 05:37:08 -06:00
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}
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config = TEGRA_XUSB_PADCTL_PACK(properties[i].param, value);
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err = pinctrl_utils_add_config(padctl->pinctrl, &configs,
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&num_configs, config);
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if (err < 0)
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2014-10-16 04:12:22 -06:00
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goto out;
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2014-06-19 05:37:08 -06:00
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}
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if (function)
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reserve++;
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if (num_configs)
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reserve++;
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err = of_property_count_strings(np, "nvidia,lanes");
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if (err < 0)
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2014-10-16 04:12:22 -06:00
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goto out;
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2014-06-19 05:37:08 -06:00
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reserve *= err;
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err = pinctrl_utils_reserve_map(padctl->pinctrl, maps, reserved_maps,
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num_maps, reserve);
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if (err < 0)
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2014-10-16 04:12:22 -06:00
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goto out;
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2014-06-19 05:37:08 -06:00
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of_property_for_each_string(np, "nvidia,lanes", prop, group) {
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if (function) {
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err = pinctrl_utils_add_map_mux(padctl->pinctrl, maps,
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reserved_maps, num_maps, group,
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function);
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if (err < 0)
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2014-10-16 04:12:22 -06:00
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goto out;
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2014-06-19 05:37:08 -06:00
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}
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if (num_configs) {
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err = pinctrl_utils_add_map_configs(padctl->pinctrl,
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maps, reserved_maps, num_maps, group,
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configs, num_configs,
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PIN_MAP_TYPE_CONFIGS_GROUP);
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if (err < 0)
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2014-10-16 04:12:22 -06:00
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goto out;
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2014-06-19 05:37:08 -06:00
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}
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}
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2014-10-16 04:12:22 -06:00
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err = 0;
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out:
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kfree(configs);
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return err;
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2014-06-19 05:37:08 -06:00
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}
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static int tegra_xusb_padctl_dt_node_to_map(struct pinctrl_dev *pinctrl,
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struct device_node *parent,
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struct pinctrl_map **maps,
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unsigned int *num_maps)
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{
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struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
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unsigned int reserved_maps = 0;
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struct device_node *np;
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int err;
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*num_maps = 0;
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*maps = NULL;
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for_each_child_of_node(parent, np) {
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err = tegra_xusb_padctl_parse_subnode(padctl, np, maps,
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&reserved_maps,
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num_maps);
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if (err < 0)
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return err;
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}
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return 0;
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}
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static const struct pinctrl_ops tegra_xusb_padctl_pinctrl_ops = {
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.get_groups_count = tegra_xusb_padctl_get_groups_count,
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.get_group_name = tegra_xusb_padctl_get_group_name,
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.dt_node_to_map = tegra_xusb_padctl_dt_node_to_map,
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.dt_free_map = pinctrl_utils_dt_free_map,
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};
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static int tegra_xusb_padctl_get_functions_count(struct pinctrl_dev *pinctrl)
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{
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struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
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return padctl->soc->num_functions;
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}
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static const char *
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tegra_xusb_padctl_get_function_name(struct pinctrl_dev *pinctrl,
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unsigned int function)
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{
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struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
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return padctl->soc->functions[function].name;
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}
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static int tegra_xusb_padctl_get_function_groups(struct pinctrl_dev *pinctrl,
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unsigned int function,
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const char * const **groups,
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unsigned * const num_groups)
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{
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struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
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*num_groups = padctl->soc->functions[function].num_groups;
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*groups = padctl->soc->functions[function].groups;
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return 0;
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}
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2014-09-03 05:02:56 -06:00
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static int tegra_xusb_padctl_pinmux_set(struct pinctrl_dev *pinctrl,
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unsigned int function,
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unsigned int group)
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2014-06-19 05:37:08 -06:00
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{
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struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
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const struct tegra_xusb_padctl_lane *lane;
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unsigned int i;
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u32 value;
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lane = &padctl->soc->lanes[group];
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for (i = 0; i < lane->num_funcs; i++)
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if (lane->funcs[i] == function)
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break;
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if (i >= lane->num_funcs)
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return -EINVAL;
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value = padctl_readl(padctl, lane->offset);
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value &= ~(lane->mask << lane->shift);
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value |= i << lane->shift;
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padctl_writel(padctl, value, lane->offset);
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return 0;
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}
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static const struct pinmux_ops tegra_xusb_padctl_pinmux_ops = {
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.get_functions_count = tegra_xusb_padctl_get_functions_count,
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.get_function_name = tegra_xusb_padctl_get_function_name,
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.get_function_groups = tegra_xusb_padctl_get_function_groups,
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2014-09-03 05:02:56 -06:00
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.set_mux = tegra_xusb_padctl_pinmux_set,
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2014-06-19 05:37:08 -06:00
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};
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static int tegra_xusb_padctl_pinconf_group_get(struct pinctrl_dev *pinctrl,
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unsigned int group,
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unsigned long *config)
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{
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struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
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const struct tegra_xusb_padctl_lane *lane;
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enum tegra_xusb_padctl_param param;
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u32 value;
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param = TEGRA_XUSB_PADCTL_UNPACK_PARAM(*config);
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lane = &padctl->soc->lanes[group];
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switch (param) {
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case TEGRA_XUSB_PADCTL_IDDQ:
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/* lanes with iddq == 0 don't support this parameter */
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if (lane->iddq == 0)
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return -EINVAL;
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value = padctl_readl(padctl, lane->offset);
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if (value & BIT(lane->iddq))
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value = 0;
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else
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value = 1;
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*config = TEGRA_XUSB_PADCTL_PACK(param, value);
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|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
dev_err(padctl->dev, "invalid configuration parameter: %04x\n",
|
|
|
|
param);
|
|
|
|
return -ENOTSUPP;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int tegra_xusb_padctl_pinconf_group_set(struct pinctrl_dev *pinctrl,
|
|
|
|
unsigned int group,
|
|
|
|
unsigned long *configs,
|
|
|
|
unsigned int num_configs)
|
|
|
|
{
|
|
|
|
struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
|
|
|
|
const struct tegra_xusb_padctl_lane *lane;
|
|
|
|
enum tegra_xusb_padctl_param param;
|
|
|
|
unsigned long value;
|
|
|
|
unsigned int i;
|
|
|
|
u32 regval;
|
|
|
|
|
|
|
|
lane = &padctl->soc->lanes[group];
|
|
|
|
|
|
|
|
for (i = 0; i < num_configs; i++) {
|
|
|
|
param = TEGRA_XUSB_PADCTL_UNPACK_PARAM(configs[i]);
|
|
|
|
value = TEGRA_XUSB_PADCTL_UNPACK_VALUE(configs[i]);
|
|
|
|
|
|
|
|
switch (param) {
|
|
|
|
case TEGRA_XUSB_PADCTL_IDDQ:
|
|
|
|
/* lanes with iddq == 0 don't support this parameter */
|
|
|
|
if (lane->iddq == 0)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
regval = padctl_readl(padctl, lane->offset);
|
|
|
|
|
|
|
|
if (value)
|
|
|
|
regval &= ~BIT(lane->iddq);
|
|
|
|
else
|
|
|
|
regval |= BIT(lane->iddq);
|
|
|
|
|
|
|
|
padctl_writel(padctl, regval, lane->offset);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
dev_err(padctl->dev,
|
|
|
|
"invalid configuration parameter: %04x\n",
|
|
|
|
param);
|
|
|
|
return -ENOTSUPP;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
|
|
static const char *strip_prefix(const char *s)
|
|
|
|
{
|
|
|
|
const char *comma = strchr(s, ',');
|
|
|
|
if (!comma)
|
|
|
|
return s;
|
|
|
|
|
|
|
|
return comma + 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tegra_xusb_padctl_pinconf_group_dbg_show(struct pinctrl_dev *pinctrl,
|
|
|
|
struct seq_file *s,
|
|
|
|
unsigned int group)
|
|
|
|
{
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
for (i = 0; i < ARRAY_SIZE(properties); i++) {
|
|
|
|
unsigned long config, value;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
config = TEGRA_XUSB_PADCTL_PACK(properties[i].param, 0);
|
|
|
|
|
|
|
|
err = tegra_xusb_padctl_pinconf_group_get(pinctrl, group,
|
|
|
|
&config);
|
|
|
|
if (err < 0)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
value = TEGRA_XUSB_PADCTL_UNPACK_VALUE(config);
|
|
|
|
|
|
|
|
seq_printf(s, "\n\t%s=%lu\n", strip_prefix(properties[i].name),
|
|
|
|
value);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
tegra_xusb_padctl_pinconf_config_dbg_show(struct pinctrl_dev *pinctrl,
|
|
|
|
struct seq_file *s,
|
|
|
|
unsigned long config)
|
|
|
|
{
|
|
|
|
enum tegra_xusb_padctl_param param;
|
|
|
|
const char *name = "unknown";
|
|
|
|
unsigned long value;
|
|
|
|
unsigned int i;
|
|
|
|
|
|
|
|
param = TEGRA_XUSB_PADCTL_UNPACK_PARAM(config);
|
|
|
|
value = TEGRA_XUSB_PADCTL_UNPACK_VALUE(config);
|
|
|
|
|
|
|
|
for (i = 0; i < ARRAY_SIZE(properties); i++) {
|
|
|
|
if (properties[i].param == param) {
|
|
|
|
name = properties[i].name;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
seq_printf(s, "%s=%lu", strip_prefix(name), value);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static const struct pinconf_ops tegra_xusb_padctl_pinconf_ops = {
|
|
|
|
.pin_config_group_get = tegra_xusb_padctl_pinconf_group_get,
|
|
|
|
.pin_config_group_set = tegra_xusb_padctl_pinconf_group_set,
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
|
|
.pin_config_group_dbg_show = tegra_xusb_padctl_pinconf_group_dbg_show,
|
|
|
|
.pin_config_config_dbg_show = tegra_xusb_padctl_pinconf_config_dbg_show,
|
|
|
|
#endif
|
|
|
|
};
|
|
|
|
|
|
|
|
static int tegra_xusb_padctl_enable(struct tegra_xusb_padctl *padctl)
|
|
|
|
{
|
|
|
|
u32 value;
|
|
|
|
|
|
|
|
mutex_lock(&padctl->lock);
|
|
|
|
|
|
|
|
if (padctl->enable++ > 0)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
|
|
|
|
usleep_range(100, 200);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
|
|
|
|
usleep_range(100, 200);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
value &= ~XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
|
|
|
|
out:
|
|
|
|
mutex_unlock(&padctl->lock);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int tegra_xusb_padctl_disable(struct tegra_xusb_padctl *padctl)
|
|
|
|
{
|
|
|
|
u32 value;
|
|
|
|
|
|
|
|
mutex_lock(&padctl->lock);
|
|
|
|
|
|
|
|
if (WARN_ON(padctl->enable == 0))
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
if (--padctl->enable > 0)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
|
|
|
|
usleep_range(100, 200);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
|
|
|
|
usleep_range(100, 200);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
value |= XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM);
|
|
|
|
|
|
|
|
out:
|
|
|
|
mutex_unlock(&padctl->lock);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int tegra_xusb_phy_init(struct phy *phy)
|
|
|
|
{
|
|
|
|
struct tegra_xusb_padctl *padctl = phy_get_drvdata(phy);
|
|
|
|
|
|
|
|
return tegra_xusb_padctl_enable(padctl);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int tegra_xusb_phy_exit(struct phy *phy)
|
|
|
|
{
|
|
|
|
struct tegra_xusb_padctl *padctl = phy_get_drvdata(phy);
|
|
|
|
|
|
|
|
return tegra_xusb_padctl_disable(padctl);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int pcie_phy_power_on(struct phy *phy)
|
|
|
|
{
|
|
|
|
struct tegra_xusb_padctl *padctl = phy_get_drvdata(phy);
|
|
|
|
unsigned long timeout;
|
|
|
|
int err = -ETIMEDOUT;
|
|
|
|
u32 value;
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
|
|
|
|
value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL2);
|
|
|
|
value |= XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN |
|
|
|
|
XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN |
|
|
|
|
XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL2);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
|
|
|
|
value |= XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
|
|
|
|
|
|
|
|
timeout = jiffies + msecs_to_jiffies(50);
|
|
|
|
|
|
|
|
while (time_before(jiffies, timeout)) {
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
|
|
|
|
if (value & XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET) {
|
|
|
|
err = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
usleep_range(100, 200);
|
|
|
|
}
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int pcie_phy_power_off(struct phy *phy)
|
|
|
|
{
|
|
|
|
struct tegra_xusb_padctl *padctl = phy_get_drvdata(phy);
|
|
|
|
u32 value;
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
|
|
|
|
value &= ~XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_P0_CTL1);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct phy_ops pcie_phy_ops = {
|
|
|
|
.init = tegra_xusb_phy_init,
|
|
|
|
.exit = tegra_xusb_phy_exit,
|
|
|
|
.power_on = pcie_phy_power_on,
|
|
|
|
.power_off = pcie_phy_power_off,
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int sata_phy_power_on(struct phy *phy)
|
|
|
|
{
|
|
|
|
struct tegra_xusb_padctl *padctl = phy_get_drvdata(phy);
|
|
|
|
unsigned long timeout;
|
|
|
|
int err = -ETIMEDOUT;
|
|
|
|
u32 value;
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
|
|
|
|
value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD;
|
|
|
|
value &= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD;
|
|
|
|
value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
|
|
|
|
timeout = jiffies + msecs_to_jiffies(50);
|
|
|
|
|
|
|
|
while (time_before(jiffies, timeout)) {
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
if (value & XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET) {
|
|
|
|
err = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
usleep_range(100, 200);
|
|
|
|
}
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int sata_phy_power_off(struct phy *phy)
|
|
|
|
{
|
|
|
|
struct tegra_xusb_padctl *padctl = phy_get_drvdata(phy);
|
|
|
|
u32 value;
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
value &= ~XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD;
|
|
|
|
value |= XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_PLL_S0_CTL1);
|
|
|
|
|
|
|
|
value = padctl_readl(padctl, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
|
|
|
|
value |= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD;
|
|
|
|
value |= ~XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ;
|
|
|
|
padctl_writel(padctl, value, XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct phy_ops sata_phy_ops = {
|
|
|
|
.init = tegra_xusb_phy_init,
|
|
|
|
.exit = tegra_xusb_phy_exit,
|
|
|
|
.power_on = sata_phy_power_on,
|
|
|
|
.power_off = sata_phy_power_off,
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct phy *tegra_xusb_padctl_xlate(struct device *dev,
|
|
|
|
struct of_phandle_args *args)
|
|
|
|
{
|
|
|
|
struct tegra_xusb_padctl *padctl = dev_get_drvdata(dev);
|
|
|
|
unsigned int index = args->args[0];
|
|
|
|
|
|
|
|
if (args->args_count <= 0)
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
|
2014-07-31 09:22:17 -06:00
|
|
|
if (index >= ARRAY_SIZE(padctl->phys))
|
2014-06-19 05:37:08 -06:00
|
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
|
|
|
|
return padctl->phys[index];
|
|
|
|
}
|
|
|
|
|
|
|
|
#define PIN_OTG_0 0
|
|
|
|
#define PIN_OTG_1 1
|
|
|
|
#define PIN_OTG_2 2
|
|
|
|
#define PIN_ULPI_0 3
|
|
|
|
#define PIN_HSIC_0 4
|
|
|
|
#define PIN_HSIC_1 5
|
|
|
|
#define PIN_PCIE_0 6
|
|
|
|
#define PIN_PCIE_1 7
|
|
|
|
#define PIN_PCIE_2 8
|
|
|
|
#define PIN_PCIE_3 9
|
|
|
|
#define PIN_PCIE_4 10
|
|
|
|
#define PIN_SATA_0 11
|
|
|
|
|
|
|
|
static const struct pinctrl_pin_desc tegra124_pins[] = {
|
|
|
|
PINCTRL_PIN(PIN_OTG_0, "otg-0"),
|
|
|
|
PINCTRL_PIN(PIN_OTG_1, "otg-1"),
|
|
|
|
PINCTRL_PIN(PIN_OTG_2, "otg-2"),
|
|
|
|
PINCTRL_PIN(PIN_ULPI_0, "ulpi-0"),
|
|
|
|
PINCTRL_PIN(PIN_HSIC_0, "hsic-0"),
|
|
|
|
PINCTRL_PIN(PIN_HSIC_1, "hsic-1"),
|
|
|
|
PINCTRL_PIN(PIN_PCIE_0, "pcie-0"),
|
|
|
|
PINCTRL_PIN(PIN_PCIE_1, "pcie-1"),
|
|
|
|
PINCTRL_PIN(PIN_PCIE_2, "pcie-2"),
|
|
|
|
PINCTRL_PIN(PIN_PCIE_3, "pcie-3"),
|
|
|
|
PINCTRL_PIN(PIN_PCIE_4, "pcie-4"),
|
|
|
|
PINCTRL_PIN(PIN_SATA_0, "sata-0"),
|
|
|
|
};
|
|
|
|
|
|
|
|
static const char * const tegra124_snps_groups[] = {
|
|
|
|
"otg-0",
|
|
|
|
"otg-1",
|
|
|
|
"otg-2",
|
|
|
|
"ulpi-0",
|
|
|
|
"hsic-0",
|
|
|
|
"hsic-1",
|
|
|
|
};
|
|
|
|
|
|
|
|
static const char * const tegra124_xusb_groups[] = {
|
|
|
|
"otg-0",
|
|
|
|
"otg-1",
|
|
|
|
"otg-2",
|
|
|
|
"ulpi-0",
|
|
|
|
"hsic-0",
|
|
|
|
"hsic-1",
|
|
|
|
};
|
|
|
|
|
|
|
|
static const char * const tegra124_uart_groups[] = {
|
|
|
|
"otg-0",
|
|
|
|
"otg-1",
|
|
|
|
"otg-2",
|
|
|
|
};
|
|
|
|
|
|
|
|
static const char * const tegra124_pcie_groups[] = {
|
|
|
|
"pcie-0",
|
|
|
|
"pcie-1",
|
|
|
|
"pcie-2",
|
|
|
|
"pcie-3",
|
|
|
|
"pcie-4",
|
|
|
|
"sata-0",
|
|
|
|
};
|
|
|
|
|
|
|
|
static const char * const tegra124_usb3_groups[] = {
|
|
|
|
"pcie-0",
|
|
|
|
"pcie-1",
|
|
|
|
"pcie-2",
|
|
|
|
"pcie-3",
|
|
|
|
"pcie-4",
|
|
|
|
"sata-0",
|
|
|
|
};
|
|
|
|
|
|
|
|
static const char * const tegra124_sata_groups[] = {
|
|
|
|
"pcie-0",
|
|
|
|
"pcie-1",
|
|
|
|
"pcie-2",
|
|
|
|
"pcie-3",
|
|
|
|
"pcie-4",
|
|
|
|
"sata-0",
|
|
|
|
};
|
|
|
|
|
|
|
|
static const char * const tegra124_rsvd_groups[] = {
|
|
|
|
"otg-0",
|
|
|
|
"otg-1",
|
|
|
|
"otg-2",
|
|
|
|
"pcie-0",
|
|
|
|
"pcie-1",
|
|
|
|
"pcie-2",
|
|
|
|
"pcie-3",
|
|
|
|
"pcie-4",
|
|
|
|
"sata-0",
|
|
|
|
};
|
|
|
|
|
|
|
|
#define TEGRA124_FUNCTION(_name) \
|
|
|
|
{ \
|
|
|
|
.name = #_name, \
|
|
|
|
.num_groups = ARRAY_SIZE(tegra124_##_name##_groups), \
|
|
|
|
.groups = tegra124_##_name##_groups, \
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct tegra_xusb_padctl_function tegra124_functions[] = {
|
|
|
|
TEGRA124_FUNCTION(snps),
|
|
|
|
TEGRA124_FUNCTION(xusb),
|
|
|
|
TEGRA124_FUNCTION(uart),
|
|
|
|
TEGRA124_FUNCTION(pcie),
|
|
|
|
TEGRA124_FUNCTION(usb3),
|
|
|
|
TEGRA124_FUNCTION(sata),
|
|
|
|
TEGRA124_FUNCTION(rsvd),
|
|
|
|
};
|
|
|
|
|
|
|
|
enum tegra124_function {
|
|
|
|
TEGRA124_FUNC_SNPS,
|
|
|
|
TEGRA124_FUNC_XUSB,
|
|
|
|
TEGRA124_FUNC_UART,
|
|
|
|
TEGRA124_FUNC_PCIE,
|
|
|
|
TEGRA124_FUNC_USB3,
|
|
|
|
TEGRA124_FUNC_SATA,
|
|
|
|
TEGRA124_FUNC_RSVD,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const unsigned int tegra124_otg_functions[] = {
|
|
|
|
TEGRA124_FUNC_SNPS,
|
|
|
|
TEGRA124_FUNC_XUSB,
|
|
|
|
TEGRA124_FUNC_UART,
|
|
|
|
TEGRA124_FUNC_RSVD,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const unsigned int tegra124_usb_functions[] = {
|
|
|
|
TEGRA124_FUNC_SNPS,
|
|
|
|
TEGRA124_FUNC_XUSB,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const unsigned int tegra124_pci_functions[] = {
|
|
|
|
TEGRA124_FUNC_PCIE,
|
|
|
|
TEGRA124_FUNC_USB3,
|
|
|
|
TEGRA124_FUNC_SATA,
|
|
|
|
TEGRA124_FUNC_RSVD,
|
|
|
|
};
|
|
|
|
|
|
|
|
#define TEGRA124_LANE(_name, _offset, _shift, _mask, _iddq, _funcs) \
|
|
|
|
{ \
|
|
|
|
.name = _name, \
|
|
|
|
.offset = _offset, \
|
|
|
|
.shift = _shift, \
|
|
|
|
.mask = _mask, \
|
|
|
|
.iddq = _iddq, \
|
|
|
|
.num_funcs = ARRAY_SIZE(tegra124_##_funcs##_functions), \
|
|
|
|
.funcs = tegra124_##_funcs##_functions, \
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct tegra_xusb_padctl_lane tegra124_lanes[] = {
|
|
|
|
TEGRA124_LANE("otg-0", 0x004, 0, 0x3, 0, otg),
|
|
|
|
TEGRA124_LANE("otg-1", 0x004, 2, 0x3, 0, otg),
|
|
|
|
TEGRA124_LANE("otg-2", 0x004, 4, 0x3, 0, otg),
|
|
|
|
TEGRA124_LANE("ulpi-0", 0x004, 12, 0x1, 0, usb),
|
|
|
|
TEGRA124_LANE("hsic-0", 0x004, 14, 0x1, 0, usb),
|
|
|
|
TEGRA124_LANE("hsic-1", 0x004, 15, 0x1, 0, usb),
|
|
|
|
TEGRA124_LANE("pcie-0", 0x134, 16, 0x3, 1, pci),
|
|
|
|
TEGRA124_LANE("pcie-1", 0x134, 18, 0x3, 2, pci),
|
|
|
|
TEGRA124_LANE("pcie-2", 0x134, 20, 0x3, 3, pci),
|
|
|
|
TEGRA124_LANE("pcie-3", 0x134, 22, 0x3, 4, pci),
|
|
|
|
TEGRA124_LANE("pcie-4", 0x134, 24, 0x3, 5, pci),
|
|
|
|
TEGRA124_LANE("sata-0", 0x134, 26, 0x3, 6, pci),
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct tegra_xusb_padctl_soc tegra124_soc = {
|
|
|
|
.num_pins = ARRAY_SIZE(tegra124_pins),
|
|
|
|
.pins = tegra124_pins,
|
|
|
|
.num_functions = ARRAY_SIZE(tegra124_functions),
|
|
|
|
.functions = tegra124_functions,
|
|
|
|
.num_lanes = ARRAY_SIZE(tegra124_lanes),
|
|
|
|
.lanes = tegra124_lanes,
|
|
|
|
};
|
|
|
|
|
|
|
|
static const struct of_device_id tegra_xusb_padctl_of_match[] = {
|
|
|
|
{ .compatible = "nvidia,tegra124-xusb-padctl", .data = &tegra124_soc },
|
|
|
|
{ }
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, tegra_xusb_padctl_of_match);
|
|
|
|
|
|
|
|
static int tegra_xusb_padctl_probe(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct tegra_xusb_padctl *padctl;
|
|
|
|
const struct of_device_id *match;
|
|
|
|
struct resource *res;
|
|
|
|
struct phy *phy;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
padctl = devm_kzalloc(&pdev->dev, sizeof(*padctl), GFP_KERNEL);
|
|
|
|
if (!padctl)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
platform_set_drvdata(pdev, padctl);
|
|
|
|
mutex_init(&padctl->lock);
|
|
|
|
padctl->dev = &pdev->dev;
|
|
|
|
|
|
|
|
match = of_match_node(tegra_xusb_padctl_of_match, pdev->dev.of_node);
|
|
|
|
padctl->soc = match->data;
|
|
|
|
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
|
|
padctl->regs = devm_ioremap_resource(&pdev->dev, res);
|
|
|
|
if (IS_ERR(padctl->regs))
|
|
|
|
return PTR_ERR(padctl->regs);
|
|
|
|
|
|
|
|
padctl->rst = devm_reset_control_get(&pdev->dev, NULL);
|
|
|
|
if (IS_ERR(padctl->rst))
|
|
|
|
return PTR_ERR(padctl->rst);
|
|
|
|
|
|
|
|
err = reset_control_deassert(padctl->rst);
|
|
|
|
if (err < 0)
|
|
|
|
return err;
|
|
|
|
|
|
|
|
memset(&padctl->desc, 0, sizeof(padctl->desc));
|
|
|
|
padctl->desc.name = dev_name(padctl->dev);
|
|
|
|
padctl->desc.pctlops = &tegra_xusb_padctl_pinctrl_ops;
|
|
|
|
padctl->desc.pmxops = &tegra_xusb_padctl_pinmux_ops;
|
|
|
|
padctl->desc.confops = &tegra_xusb_padctl_pinconf_ops;
|
|
|
|
padctl->desc.owner = THIS_MODULE;
|
|
|
|
|
|
|
|
padctl->pinctrl = pinctrl_register(&padctl->desc, &pdev->dev, padctl);
|
|
|
|
if (!padctl->pinctrl) {
|
|
|
|
dev_err(&pdev->dev, "failed to register pincontrol\n");
|
|
|
|
err = -ENODEV;
|
|
|
|
goto reset;
|
|
|
|
}
|
|
|
|
|
2014-11-19 08:28:21 -07:00
|
|
|
phy = devm_phy_create(&pdev->dev, NULL, &pcie_phy_ops);
|
2014-06-19 05:37:08 -06:00
|
|
|
if (IS_ERR(phy)) {
|
|
|
|
err = PTR_ERR(phy);
|
|
|
|
goto unregister;
|
|
|
|
}
|
|
|
|
|
|
|
|
padctl->phys[TEGRA_XUSB_PADCTL_PCIE] = phy;
|
|
|
|
phy_set_drvdata(phy, padctl);
|
|
|
|
|
2014-11-19 08:28:21 -07:00
|
|
|
phy = devm_phy_create(&pdev->dev, NULL, &sata_phy_ops);
|
2014-06-19 05:37:08 -06:00
|
|
|
if (IS_ERR(phy)) {
|
|
|
|
err = PTR_ERR(phy);
|
|
|
|
goto unregister;
|
|
|
|
}
|
|
|
|
|
|
|
|
padctl->phys[TEGRA_XUSB_PADCTL_SATA] = phy;
|
|
|
|
phy_set_drvdata(phy, padctl);
|
|
|
|
|
|
|
|
padctl->provider = devm_of_phy_provider_register(&pdev->dev,
|
|
|
|
tegra_xusb_padctl_xlate);
|
2014-07-31 09:23:08 -06:00
|
|
|
if (IS_ERR(padctl->provider)) {
|
|
|
|
err = PTR_ERR(padctl->provider);
|
2014-06-19 05:37:08 -06:00
|
|
|
dev_err(&pdev->dev, "failed to register PHYs: %d\n", err);
|
|
|
|
goto unregister;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
unregister:
|
|
|
|
pinctrl_unregister(padctl->pinctrl);
|
|
|
|
reset:
|
|
|
|
reset_control_assert(padctl->rst);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int tegra_xusb_padctl_remove(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct tegra_xusb_padctl *padctl = platform_get_drvdata(pdev);
|
|
|
|
int err;
|
|
|
|
|
|
|
|
pinctrl_unregister(padctl->pinctrl);
|
|
|
|
|
|
|
|
err = reset_control_assert(padctl->rst);
|
|
|
|
if (err < 0)
|
|
|
|
dev_err(&pdev->dev, "failed to assert reset: %d\n", err);
|
|
|
|
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct platform_driver tegra_xusb_padctl_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "tegra-xusb-padctl",
|
|
|
|
.of_match_table = tegra_xusb_padctl_of_match,
|
|
|
|
},
|
|
|
|
.probe = tegra_xusb_padctl_probe,
|
|
|
|
.remove = tegra_xusb_padctl_remove,
|
|
|
|
};
|
|
|
|
module_platform_driver(tegra_xusb_padctl_driver);
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
|
|
|
|
MODULE_DESCRIPTION("Tegra 124 XUSB Pad Control driver");
|
|
|
|
MODULE_LICENSE("GPL v2");
|