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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-06-10 05:30:17 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-06-10 05:30:17 -0300
commitd635711daa98be86d4c7fd01499c34f566b54ccb (patch)
treeaa5cc3760a27c3d57146498cb82fa549547de06c /drivers/pinctrl/pinctrl-tegra-xusb.c
parentc91265cd0efb83778f015b4d4b1129bd2cfd075e (diff)
Linux-libre 4.6.2-gnu
Diffstat (limited to 'drivers/pinctrl/pinctrl-tegra-xusb.c')
-rw-r--r--drivers/pinctrl/pinctrl-tegra-xusb.c985
1 files changed, 0 insertions, 985 deletions
diff --git a/drivers/pinctrl/pinctrl-tegra-xusb.c b/drivers/pinctrl/pinctrl-tegra-xusb.c
deleted file mode 100644
index bd3aa5a4f..000000000
--- a/drivers/pinctrl/pinctrl-tegra-xusb.c
+++ /dev/null
@@ -1,985 +0,0 @@
-/*
- * Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- */
-
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/phy/phy.h>
-#include <linux/pinctrl/pinctrl.h>
-#include <linux/pinctrl/pinmux.h>
-#include <linux/platform_device.h>
-#include <linux/reset.h>
-#include <linux/slab.h>
-
-#include <dt-bindings/pinctrl/pinctrl-tegra-xusb.h>
-
-#include "core.h"
-#include "pinctrl-utils.h"
-
-#define XUSB_PADCTL_ELPG_PROGRAM 0x01c
-#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_VCORE_DOWN (1 << 26)
-#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN_EARLY (1 << 25)
-#define XUSB_PADCTL_ELPG_PROGRAM_AUX_MUX_LP0_CLAMP_EN (1 << 24)
-
-#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1 0x040
-#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL0_LOCKDET (1 << 19)
-#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_REFCLK_SEL_MASK (0xf << 12)
-#define XUSB_PADCTL_IOPHY_PLL_P0_CTL1_PLL_RST (1 << 1)
-
-#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2 0x044
-#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_REFCLKBUF_EN (1 << 6)
-#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_EN (1 << 5)
-#define XUSB_PADCTL_IOPHY_PLL_P0_CTL2_TXCLKREF_SEL (1 << 4)
-
-#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1 0x138
-#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_LOCKDET (1 << 27)
-#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL1_MODE (1 << 24)
-#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_PWR_OVRD (1 << 3)
-#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_RST (1 << 1)
-#define XUSB_PADCTL_IOPHY_PLL_S0_CTL1_PLL_IDDQ (1 << 0)
-
-#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1 0x148
-#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ_OVRD (1 << 1)
-#define XUSB_PADCTL_IOPHY_MISC_PAD_S0_CTL1_IDDQ (1 << 0)
-
-struct tegra_xusb_padctl_function {
- const char *name;
- const char * const *groups;
- unsigned int num_groups;
-};
-
-struct tegra_xusb_padctl_soc {
- const struct pinctrl_pin_desc *pins;
- unsigned int num_pins;
-
- const struct tegra_xusb_padctl_function *functions;
- unsigned int num_functions;
-
- const struct tegra_xusb_padctl_lane *lanes;
- unsigned int num_lanes;
-};
-
-struct tegra_xusb_padctl_lane {
- const char *name;
-
- unsigned int offset;
- unsigned int shift;
- unsigned int mask;
- unsigned int iddq;
-
- const unsigned int *funcs;
- unsigned int num_funcs;
-};
-
-struct tegra_xusb_padctl {
- struct device *dev;
- void __iomem *regs;
- struct mutex lock;
- struct reset_control *rst;
-
- const struct tegra_xusb_padctl_soc *soc;
- struct pinctrl_dev *pinctrl;
- struct pinctrl_desc desc;
-
- struct phy_provider *provider;
- struct phy *phys[2];
-
- unsigned int enable;
-};
-
-static inline void padctl_writel(struct tegra_xusb_padctl *padctl, u32 value,
- unsigned long offset)
-{
- writel(value, padctl->regs + offset);
-}
-
-static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl,
- unsigned long offset)
-{
- return readl(padctl->regs + offset);
-}
-
-static int tegra_xusb_padctl_get_groups_count(struct pinctrl_dev *pinctrl)
-{
- struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
-
- return padctl->soc->num_pins;
-}
-
-static const char *tegra_xusb_padctl_get_group_name(struct pinctrl_dev *pinctrl,
- unsigned int group)
-{
- struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
-
- return padctl->soc->pins[group].name;
-}
-
-static int tegra_xusb_padctl_get_group_pins(struct pinctrl_dev *pinctrl,
- unsigned group,
- const unsigned **pins,
- unsigned *num_pins)
-{
- /*
- * For the tegra-xusb pad controller groups are synonomous
- * with lanes/pins and there is always one lane/pin per group.
- */
- *pins = &pinctrl->desc->pins[group].number;
- *num_pins = 1;
-
- return 0;
-}
-
-enum tegra_xusb_padctl_param {
- TEGRA_XUSB_PADCTL_IDDQ,
-};
-
-static const struct tegra_xusb_padctl_property {
- const char *name;
- enum tegra_xusb_padctl_param param;
-} properties[] = {
- { "nvidia,iddq", TEGRA_XUSB_PADCTL_IDDQ },
-};
-
-#define TEGRA_XUSB_PADCTL_PACK(param, value) ((param) << 16 | (value))
-#define TEGRA_XUSB_PADCTL_UNPACK_PARAM(config) ((config) >> 16)
-#define TEGRA_XUSB_PADCTL_UNPACK_VALUE(config) ((config) & 0xffff)
-
-static int tegra_xusb_padctl_parse_subnode(struct tegra_xusb_padctl *padctl,
- struct device_node *np,
- struct pinctrl_map **maps,
- unsigned int *reserved_maps,
- unsigned int *num_maps)
-{
- unsigned int i, reserve = 0, num_configs = 0;
- unsigned long config, *configs = NULL;
- const char *function, *group;
- struct property *prop;
- int err = 0;
- u32 value;
-
- err = of_property_read_string(np, "nvidia,function", &function);
- if (err < 0) {
- if (err != -EINVAL)
- return err;
-
- function = NULL;
- }
-
- for (i = 0; i < ARRAY_SIZE(properties); i++) {
- err = of_property_read_u32(np, properties[i].name, &value);
- if (err < 0) {
- if (err == -EINVAL)
- continue;
-
- goto out;
- }
-
- config = TEGRA_XUSB_PADCTL_PACK(properties[i].param, value);
-
- err = pinctrl_utils_add_config(padctl->pinctrl, &configs,
- &num_configs, config);
- if (err < 0)
- goto out;
- }
-
- if (function)
- reserve++;
-
- if (num_configs)
- reserve++;
-
- err = of_property_count_strings(np, "nvidia,lanes");
- if (err < 0)
- goto out;
-
- reserve *= err;
-
- err = pinctrl_utils_reserve_map(padctl->pinctrl, maps, reserved_maps,
- num_maps, reserve);
- if (err < 0)
- goto out;
-
- of_property_for_each_string(np, "nvidia,lanes", prop, group) {
- if (function) {
- err = pinctrl_utils_add_map_mux(padctl->pinctrl, maps,
- reserved_maps, num_maps, group,
- function);
- if (err < 0)
- goto out;
- }
-
- if (num_configs) {
- err = pinctrl_utils_add_map_configs(padctl->pinctrl,
- maps, reserved_maps, num_maps, group,
- configs, num_configs,
- PIN_MAP_TYPE_CONFIGS_GROUP);
- if (err < 0)
- goto out;
- }
- }
-
- err = 0;
-
-out:
- kfree(configs);
- return err;
-}
-
-static int tegra_xusb_padctl_dt_node_to_map(struct pinctrl_dev *pinctrl,
- struct device_node *parent,
- struct pinctrl_map **maps,
- unsigned int *num_maps)
-{
- struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
- unsigned int reserved_maps = 0;
- struct device_node *np;
- int err;
-
- *num_maps = 0;
- *maps = NULL;
-
- for_each_child_of_node(parent, np) {
- err = tegra_xusb_padctl_parse_subnode(padctl, np, maps,
- &reserved_maps,
- num_maps);
- if (err < 0) {
- of_node_put(np);
- return err;
- }
- }
-
- return 0;
-}
-
-static const struct pinctrl_ops tegra_xusb_padctl_pinctrl_ops = {
- .get_groups_count = tegra_xusb_padctl_get_groups_count,
- .get_group_name = tegra_xusb_padctl_get_group_name,
- .get_group_pins = tegra_xusb_padctl_get_group_pins,
- .dt_node_to_map = tegra_xusb_padctl_dt_node_to_map,
- .dt_free_map = pinctrl_utils_dt_free_map,
-};
-
-static int tegra_xusb_padctl_get_functions_count(struct pinctrl_dev *pinctrl)
-{
- struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
-
- return padctl->soc->num_functions;
-}
-
-static const char *
-tegra_xusb_padctl_get_function_name(struct pinctrl_dev *pinctrl,
- unsigned int function)
-{
- struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
-
- return padctl->soc->functions[function].name;
-}
-
-static int tegra_xusb_padctl_get_function_groups(struct pinctrl_dev *pinctrl,
- unsigned int function,
- const char * const **groups,
- unsigned * const num_groups)
-{
- struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
-
- *num_groups = padctl->soc->functions[function].num_groups;
- *groups = padctl->soc->functions[function].groups;
-
- return 0;
-}
-
-static int tegra_xusb_padctl_pinmux_set(struct pinctrl_dev *pinctrl,
- unsigned int function,
- unsigned int group)
-{
- struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
- const struct tegra_xusb_padctl_lane *lane;
- unsigned int i;
- u32 value;
-
- lane = &padctl->soc->lanes[group];
-
- for (i = 0; i < lane->num_funcs; i++)
- if (lane->funcs[i] == function)
- break;
-
- if (i >= lane->num_funcs)
- return -EINVAL;
-
- value = padctl_readl(padctl, lane->offset);
- value &= ~(lane->mask << lane->shift);
- value |= i << lane->shift;
- padctl_writel(padctl, value, lane->offset);
-
- return 0;
-}
-
-static const struct pinmux_ops tegra_xusb_padctl_pinmux_ops = {
- .get_functions_count = tegra_xusb_padctl_get_functions_count,
- .get_function_name = tegra_xusb_padctl_get_function_name,
- .get_function_groups = tegra_xusb_padctl_get_function_groups,
- .set_mux = tegra_xusb_padctl_pinmux_set,
-};
-
-static int tegra_xusb_padctl_pinconf_group_get(struct pinctrl_dev *pinctrl,
- unsigned int group,
- unsigned long *config)
-{
- struct tegra_xusb_padctl *padctl = pinctrl_dev_get_drvdata(pinctrl);
- const struct tegra_xusb_padctl_lane *lane;
- enum tegra_xusb_padctl_param param;
- u32 value;
-
- param = TEGRA_XUSB_PADCTL_UNPACK_PARAM(*config);
- lane = &padctl->soc->lanes[group];
-
- switch (param) {
- case TEGRA_XUSB_PADCTL_IDDQ:
- /* lanes with iddq == 0 don't support this parameter */
- if (lane->iddq == 0)
- return -EINVAL;
-
- value = padctl_readl(padctl, lane->offset);
-
- if (value & BIT(lane->iddq))
- value = 0;
- else
- value = 1;
-
- *config = TEGRA_XUSB_PADCTL_PACK(param, value);
- 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);
-
- if (index >= ARRAY_SIZE(padctl->phys))
- 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",
-};
-
-static const char * const tegra124_usb3_groups[] = {
- "pcie-0",
- "pcie-1",
- "sata-0",
-};
-
-static const char * const tegra124_sata_groups[] = {
- "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.pins = tegra124_pins;
- padctl->desc.npins = ARRAY_SIZE(tegra124_pins);
- 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 (IS_ERR(padctl->pinctrl)) {
- dev_err(&pdev->dev, "failed to register pincontrol\n");
- err = PTR_ERR(padctl->pinctrl);
- goto reset;
- }
-
- phy = devm_phy_create(&pdev->dev, NULL, &pcie_phy_ops);
- if (IS_ERR(phy)) {
- err = PTR_ERR(phy);
- goto unregister;
- }
-
- padctl->phys[TEGRA_XUSB_PADCTL_PCIE] = phy;
- phy_set_drvdata(phy, padctl);
-
- phy = devm_phy_create(&pdev->dev, NULL, &sata_phy_ops);
- 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);
- if (IS_ERR(padctl->provider)) {
- err = PTR_ERR(padctl->provider);
- 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");