mirror of https://github.com/OpenIPC/firmware.git
262 lines
7.5 KiB
Diff
262 lines
7.5 KiB
Diff
diff -drupN a/drivers/clk/sunxi/clk-usb.c b/drivers/clk/sunxi/clk-usb.c
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--- a/drivers/clk/sunxi/clk-usb.c 2018-08-06 17:23:04.000000000 +0300
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+++ b/drivers/clk/sunxi/clk-usb.c 1970-01-01 03:00:00.000000000 +0300
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@@ -1,257 +0,0 @@
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-/*
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- * Copyright 2013-2015 Emilio López
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- *
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- * Emilio López <emilio@elopez.com.ar>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- * GNU General Public License for more details.
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- */
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-
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-#include <linux/clk.h>
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-#include <linux/clk-provider.h>
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-#include <linux/of.h>
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-#include <linux/of_address.h>
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-#include <linux/reset-controller.h>
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-#include <linux/slab.h>
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-#include <linux/spinlock.h>
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-
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-
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-/**
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- * sunxi_usb_reset... - reset bits in usb clk registers handling
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- */
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-
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-struct usb_reset_data {
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- void __iomem *reg;
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- spinlock_t *lock;
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- struct clk *clk;
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- struct reset_controller_dev rcdev;
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-};
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-
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-static int sunxi_usb_reset_assert(struct reset_controller_dev *rcdev,
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- unsigned long id)
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-{
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- struct usb_reset_data *data = container_of(rcdev,
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- struct usb_reset_data,
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- rcdev);
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- unsigned long flags;
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- u32 reg;
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-
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- clk_prepare_enable(data->clk);
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- spin_lock_irqsave(data->lock, flags);
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-
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- reg = readl(data->reg);
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- writel(reg & ~BIT(id), data->reg);
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-
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- spin_unlock_irqrestore(data->lock, flags);
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- clk_disable_unprepare(data->clk);
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-
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- return 0;
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-}
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-
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-static int sunxi_usb_reset_deassert(struct reset_controller_dev *rcdev,
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- unsigned long id)
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-{
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- struct usb_reset_data *data = container_of(rcdev,
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- struct usb_reset_data,
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- rcdev);
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- unsigned long flags;
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- u32 reg;
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-
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- clk_prepare_enable(data->clk);
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- spin_lock_irqsave(data->lock, flags);
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-
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- reg = readl(data->reg);
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- writel(reg | BIT(id), data->reg);
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-
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- spin_unlock_irqrestore(data->lock, flags);
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- clk_disable_unprepare(data->clk);
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-
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- return 0;
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-}
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-
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-static const struct reset_control_ops sunxi_usb_reset_ops = {
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- .assert = sunxi_usb_reset_assert,
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- .deassert = sunxi_usb_reset_deassert,
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-};
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-
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-/**
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- * sunxi_usb_clk_setup() - Setup function for usb gate clocks
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- */
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-
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-#define SUNXI_USB_MAX_SIZE 32
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-
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-struct usb_clk_data {
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- u32 clk_mask;
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- u32 reset_mask;
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- bool reset_needs_clk;
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-};
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-
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-static void __init sunxi_usb_clk_setup(struct device_node *node,
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- const struct usb_clk_data *data,
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- spinlock_t *lock)
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-{
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- struct clk_onecell_data *clk_data;
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- struct usb_reset_data *reset_data;
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- const char *clk_parent;
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- const char *clk_name;
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- void __iomem *reg;
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- int qty;
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- int i = 0;
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- int j = 0;
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-
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- reg = of_io_request_and_map(node, 0, of_node_full_name(node));
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- if (IS_ERR(reg))
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- return;
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-
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- clk_parent = of_clk_get_parent_name(node, 0);
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- if (!clk_parent)
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- return;
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-
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- /* Worst-case size approximation and memory allocation */
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- qty = find_last_bit((unsigned long *)&data->clk_mask,
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- SUNXI_USB_MAX_SIZE);
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-
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- clk_data = kmalloc(sizeof(struct clk_onecell_data), GFP_KERNEL);
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- if (!clk_data)
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- return;
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-
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- clk_data->clks = kzalloc((qty+1) * sizeof(struct clk *), GFP_KERNEL);
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- if (!clk_data->clks) {
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- kfree(clk_data);
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- return;
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- }
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-
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- for_each_set_bit(i, (unsigned long *)&data->clk_mask,
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- SUNXI_USB_MAX_SIZE) {
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- of_property_read_string_index(node, "clock-output-names",
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- j, &clk_name);
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- clk_data->clks[i] = clk_register_gate(NULL, clk_name,
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- clk_parent, 0,
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- reg, i, 0, lock);
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- WARN_ON(IS_ERR(clk_data->clks[i]));
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-
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- j++;
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- }
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-
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- /* Adjust to the real max */
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- clk_data->clk_num = i;
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-
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- of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
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-
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- /* Register a reset controller for usb with reset bits */
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- if (data->reset_mask == 0)
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- return;
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-
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- reset_data = kzalloc(sizeof(*reset_data), GFP_KERNEL);
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- if (!reset_data)
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- return;
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-
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- if (data->reset_needs_clk) {
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- reset_data->clk = of_clk_get(node, 0);
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- if (IS_ERR(reset_data->clk)) {
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- pr_err("Could not get clock for reset controls\n");
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- kfree(reset_data);
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- return;
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- }
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- }
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-
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- reset_data->reg = reg;
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- reset_data->lock = lock;
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- reset_data->rcdev.nr_resets = __fls(data->reset_mask) + 1;
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- reset_data->rcdev.ops = &sunxi_usb_reset_ops;
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- reset_data->rcdev.of_node = node;
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- reset_controller_register(&reset_data->rcdev);
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-}
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-
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-static const struct usb_clk_data sun4i_a10_usb_clk_data __initconst = {
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- .clk_mask = BIT(8) | BIT(7) | BIT(6),
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- .reset_mask = BIT(2) | BIT(1) | BIT(0),
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-};
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-
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-static DEFINE_SPINLOCK(sun4i_a10_usb_lock);
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-
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-static void __init sun4i_a10_usb_setup(struct device_node *node)
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-{
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- sunxi_usb_clk_setup(node, &sun4i_a10_usb_clk_data, &sun4i_a10_usb_lock);
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-}
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-CLK_OF_DECLARE(sun4i_a10_usb, "allwinner,sun4i-a10-usb-clk", sun4i_a10_usb_setup);
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-
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-static const struct usb_clk_data sun5i_a13_usb_clk_data __initconst = {
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- .clk_mask = BIT(8) | BIT(6),
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- .reset_mask = BIT(1) | BIT(0),
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-};
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-
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-static void __init sun5i_a13_usb_setup(struct device_node *node)
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-{
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- sunxi_usb_clk_setup(node, &sun5i_a13_usb_clk_data, &sun4i_a10_usb_lock);
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-}
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-CLK_OF_DECLARE(sun5i_a13_usb, "allwinner,sun5i-a13-usb-clk", sun5i_a13_usb_setup);
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-
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-static const struct usb_clk_data sun6i_a31_usb_clk_data __initconst = {
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- .clk_mask = BIT(18) | BIT(17) | BIT(16) | BIT(10) | BIT(9) | BIT(8),
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- .reset_mask = BIT(2) | BIT(1) | BIT(0),
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-};
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-
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-static void __init sun6i_a31_usb_setup(struct device_node *node)
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-{
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- sunxi_usb_clk_setup(node, &sun6i_a31_usb_clk_data, &sun4i_a10_usb_lock);
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-}
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-CLK_OF_DECLARE(sun6i_a31_usb, "allwinner,sun6i-a31-usb-clk", sun6i_a31_usb_setup);
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-
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-static const struct usb_clk_data sun8i_a23_usb_clk_data __initconst = {
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- .clk_mask = BIT(16) | BIT(11) | BIT(10) | BIT(9) | BIT(8),
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- .reset_mask = BIT(2) | BIT(1) | BIT(0),
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-};
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-
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-static void __init sun8i_a23_usb_setup(struct device_node *node)
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-{
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- sunxi_usb_clk_setup(node, &sun8i_a23_usb_clk_data, &sun4i_a10_usb_lock);
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-}
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-CLK_OF_DECLARE(sun8i_a23_usb, "allwinner,sun8i-a23-usb-clk", sun8i_a23_usb_setup);
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-
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-static const struct usb_clk_data sun8i_h3_usb_clk_data __initconst = {
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- .clk_mask = BIT(19) | BIT(18) | BIT(17) | BIT(16) |
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- BIT(11) | BIT(10) | BIT(9) | BIT(8),
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- .reset_mask = BIT(3) | BIT(2) | BIT(1) | BIT(0),
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-};
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-
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-static void __init sun8i_h3_usb_setup(struct device_node *node)
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-{
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- sunxi_usb_clk_setup(node, &sun8i_h3_usb_clk_data, &sun4i_a10_usb_lock);
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-}
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-CLK_OF_DECLARE(sun8i_h3_usb, "allwinner,sun8i-h3-usb-clk", sun8i_h3_usb_setup);
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-
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-static const struct usb_clk_data sun9i_a80_usb_mod_data __initconst = {
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- .clk_mask = BIT(6) | BIT(5) | BIT(4) | BIT(3) | BIT(2) | BIT(1),
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- .reset_mask = BIT(19) | BIT(18) | BIT(17),
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- .reset_needs_clk = 1,
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-};
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-
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-static DEFINE_SPINLOCK(a80_usb_mod_lock);
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-
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-static void __init sun9i_a80_usb_mod_setup(struct device_node *node)
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-{
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- sunxi_usb_clk_setup(node, &sun9i_a80_usb_mod_data, &a80_usb_mod_lock);
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-}
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-CLK_OF_DECLARE(sun9i_a80_usb_mod, "allwinner,sun9i-a80-usb-mod-clk", sun9i_a80_usb_mod_setup);
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-
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-static const struct usb_clk_data sun9i_a80_usb_phy_data __initconst = {
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- .clk_mask = BIT(10) | BIT(5) | BIT(4) | BIT(3) | BIT(2) | BIT(1),
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- .reset_mask = BIT(21) | BIT(20) | BIT(19) | BIT(18) | BIT(17),
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- .reset_needs_clk = 1,
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-};
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-
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-static DEFINE_SPINLOCK(a80_usb_phy_lock);
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-
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-static void __init sun9i_a80_usb_phy_setup(struct device_node *node)
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-{
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- sunxi_usb_clk_setup(node, &sun9i_a80_usb_phy_data, &a80_usb_phy_lock);
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-}
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-CLK_OF_DECLARE(sun9i_a80_usb_phy, "allwinner,sun9i-a80-usb-phy-clk", sun9i_a80_usb_phy_setup);
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