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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
142 lines
2.9 KiB
C
142 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* OMAP IOMMU quirks for various TI SoCs
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*
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* Copyright (C) 2015-2019 Texas Instruments Incorporated - https://www.ti.com/
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* Suman Anna <s-anna@ti.com>
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*/
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#include <linux/platform_device.h>
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#include <linux/err.h>
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#include <linux/clk.h>
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#include <linux/list.h>
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#include "clockdomain.h"
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#include "powerdomain.h"
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#include "common.h"
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struct pwrdm_link {
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struct device *dev;
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struct powerdomain *pwrdm;
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struct list_head node;
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};
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static DEFINE_SPINLOCK(iommu_lock);
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static struct clockdomain *emu_clkdm;
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static atomic_t emu_count;
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static void omap_iommu_dra7_emu_swsup_config(struct platform_device *pdev,
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bool enable)
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{
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struct device_node *np = pdev->dev.of_node;
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unsigned long flags;
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if (!of_device_is_compatible(np, "ti,dra7-dsp-iommu"))
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return;
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if (!emu_clkdm) {
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emu_clkdm = clkdm_lookup("emu_clkdm");
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if (WARN_ON_ONCE(!emu_clkdm))
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return;
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}
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spin_lock_irqsave(&iommu_lock, flags);
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if (enable && (atomic_inc_return(&emu_count) == 1))
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clkdm_deny_idle(emu_clkdm);
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else if (!enable && (atomic_dec_return(&emu_count) == 0))
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clkdm_allow_idle(emu_clkdm);
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spin_unlock_irqrestore(&iommu_lock, flags);
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}
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static struct powerdomain *_get_pwrdm(struct device *dev)
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{
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struct clk *clk;
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struct clk_hw_omap *hwclk;
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struct clockdomain *clkdm;
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struct powerdomain *pwrdm = NULL;
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struct pwrdm_link *entry;
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unsigned long flags;
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static LIST_HEAD(cache);
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spin_lock_irqsave(&iommu_lock, flags);
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list_for_each_entry(entry, &cache, node) {
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if (entry->dev == dev) {
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pwrdm = entry->pwrdm;
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break;
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}
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}
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spin_unlock_irqrestore(&iommu_lock, flags);
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if (pwrdm)
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return pwrdm;
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clk = of_clk_get(dev->of_node->parent, 0);
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if (IS_ERR(clk)) {
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dev_err(dev, "no fck found\n");
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return NULL;
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}
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hwclk = to_clk_hw_omap(__clk_get_hw(clk));
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clk_put(clk);
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if (!hwclk || !hwclk->clkdm_name) {
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dev_err(dev, "no hwclk data\n");
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return NULL;
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}
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clkdm = clkdm_lookup(hwclk->clkdm_name);
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if (!clkdm) {
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dev_err(dev, "clkdm not found: %s\n", hwclk->clkdm_name);
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return NULL;
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}
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pwrdm = clkdm_get_pwrdm(clkdm);
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if (!pwrdm) {
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dev_err(dev, "pwrdm not found: %s\n", clkdm->name);
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return NULL;
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}
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entry = kmalloc_obj(*entry);
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if (entry) {
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entry->dev = dev;
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entry->pwrdm = pwrdm;
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spin_lock_irqsave(&iommu_lock, flags);
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list_add(&entry->node, &cache);
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spin_unlock_irqrestore(&iommu_lock, flags);
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}
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return pwrdm;
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}
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int omap_iommu_set_pwrdm_constraint(struct platform_device *pdev, bool request,
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u8 *pwrst)
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{
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struct powerdomain *pwrdm;
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u8 next_pwrst;
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int ret = 0;
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pwrdm = _get_pwrdm(&pdev->dev);
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if (!pwrdm)
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return -ENODEV;
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if (request) {
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*pwrst = pwrdm_read_next_pwrst(pwrdm);
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omap_iommu_dra7_emu_swsup_config(pdev, true);
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}
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if (*pwrst > PWRDM_POWER_RET)
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goto out;
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next_pwrst = request ? PWRDM_POWER_ON : *pwrst;
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ret = pwrdm_set_next_pwrst(pwrdm, next_pwrst);
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out:
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if (!request)
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omap_iommu_dra7_emu_swsup_config(pdev, false);
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return ret;
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}
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