License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 21:07:57 +07:00
|
|
|
// SPDX-License-Identifier: GPL-2.0
|
2013-04-22 21:43:50 +07:00
|
|
|
/*
|
|
|
|
* IMG PowerDown Controller (PDC)
|
|
|
|
*
|
|
|
|
* Copyright 2010-2013 Imagination Technologies Ltd.
|
|
|
|
*
|
|
|
|
* Exposes the syswake and PDC peripheral wake interrupts to the system.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/bitops.h>
|
|
|
|
#include <linux/interrupt.h>
|
|
|
|
#include <linux/irqdomain.h>
|
|
|
|
#include <linux/io.h>
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/of.h>
|
|
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <linux/spinlock.h>
|
|
|
|
|
|
|
|
/* PDC interrupt register numbers */
|
|
|
|
|
|
|
|
#define PDC_IRQ_STATUS 0x310
|
|
|
|
#define PDC_IRQ_ENABLE 0x314
|
|
|
|
#define PDC_IRQ_CLEAR 0x318
|
|
|
|
#define PDC_IRQ_ROUTE 0x31c
|
|
|
|
#define PDC_SYS_WAKE_BASE 0x330
|
|
|
|
#define PDC_SYS_WAKE_STRIDE 0x8
|
|
|
|
#define PDC_SYS_WAKE_CONFIG_BASE 0x334
|
|
|
|
#define PDC_SYS_WAKE_CONFIG_STRIDE 0x8
|
|
|
|
|
|
|
|
/* PDC interrupt register field masks */
|
|
|
|
|
|
|
|
#define PDC_IRQ_SYS3 0x08
|
|
|
|
#define PDC_IRQ_SYS2 0x04
|
|
|
|
#define PDC_IRQ_SYS1 0x02
|
|
|
|
#define PDC_IRQ_SYS0 0x01
|
|
|
|
#define PDC_IRQ_ROUTE_WU_EN_SYS3 0x08000000
|
|
|
|
#define PDC_IRQ_ROUTE_WU_EN_SYS2 0x04000000
|
|
|
|
#define PDC_IRQ_ROUTE_WU_EN_SYS1 0x02000000
|
|
|
|
#define PDC_IRQ_ROUTE_WU_EN_SYS0 0x01000000
|
|
|
|
#define PDC_IRQ_ROUTE_WU_EN_WD 0x00040000
|
|
|
|
#define PDC_IRQ_ROUTE_WU_EN_IR 0x00020000
|
|
|
|
#define PDC_IRQ_ROUTE_WU_EN_RTC 0x00010000
|
|
|
|
#define PDC_IRQ_ROUTE_EXT_EN_SYS3 0x00000800
|
|
|
|
#define PDC_IRQ_ROUTE_EXT_EN_SYS2 0x00000400
|
|
|
|
#define PDC_IRQ_ROUTE_EXT_EN_SYS1 0x00000200
|
|
|
|
#define PDC_IRQ_ROUTE_EXT_EN_SYS0 0x00000100
|
|
|
|
#define PDC_IRQ_ROUTE_EXT_EN_WD 0x00000004
|
|
|
|
#define PDC_IRQ_ROUTE_EXT_EN_IR 0x00000002
|
|
|
|
#define PDC_IRQ_ROUTE_EXT_EN_RTC 0x00000001
|
|
|
|
#define PDC_SYS_WAKE_RESET 0x00000010
|
|
|
|
#define PDC_SYS_WAKE_INT_MODE 0x0000000e
|
|
|
|
#define PDC_SYS_WAKE_INT_MODE_SHIFT 1
|
|
|
|
#define PDC_SYS_WAKE_PIN_VAL 0x00000001
|
|
|
|
|
|
|
|
/* PDC interrupt constants */
|
|
|
|
|
|
|
|
#define PDC_SYS_WAKE_INT_LOW 0x0
|
|
|
|
#define PDC_SYS_WAKE_INT_HIGH 0x1
|
|
|
|
#define PDC_SYS_WAKE_INT_DOWN 0x2
|
|
|
|
#define PDC_SYS_WAKE_INT_UP 0x3
|
|
|
|
#define PDC_SYS_WAKE_INT_CHANGE 0x6
|
|
|
|
#define PDC_SYS_WAKE_INT_NONE 0x4
|
|
|
|
|
|
|
|
/**
|
|
|
|
* struct pdc_intc_priv - private pdc interrupt data.
|
|
|
|
* @nr_perips: Number of peripheral interrupt signals.
|
|
|
|
* @nr_syswakes: Number of syswake signals.
|
|
|
|
* @perip_irqs: List of peripheral IRQ numbers handled.
|
|
|
|
* @syswake_irq: Shared PDC syswake IRQ number.
|
|
|
|
* @domain: IRQ domain for PDC peripheral and syswake IRQs.
|
|
|
|
* @pdc_base: Base of PDC registers.
|
|
|
|
* @irq_route: Cached version of PDC_IRQ_ROUTE register.
|
|
|
|
* @lock: Lock to protect the PDC syswake registers and the cached
|
|
|
|
* values of those registers in this struct.
|
|
|
|
*/
|
|
|
|
struct pdc_intc_priv {
|
|
|
|
unsigned int nr_perips;
|
|
|
|
unsigned int nr_syswakes;
|
|
|
|
unsigned int *perip_irqs;
|
|
|
|
unsigned int syswake_irq;
|
|
|
|
struct irq_domain *domain;
|
|
|
|
void __iomem *pdc_base;
|
|
|
|
|
|
|
|
u32 irq_route;
|
|
|
|
raw_spinlock_t lock;
|
|
|
|
};
|
|
|
|
|
|
|
|
static void pdc_write(struct pdc_intc_priv *priv, unsigned int reg_offs,
|
|
|
|
unsigned int data)
|
|
|
|
{
|
|
|
|
iowrite32(data, priv->pdc_base + reg_offs);
|
|
|
|
}
|
|
|
|
|
|
|
|
static unsigned int pdc_read(struct pdc_intc_priv *priv,
|
|
|
|
unsigned int reg_offs)
|
|
|
|
{
|
|
|
|
return ioread32(priv->pdc_base + reg_offs);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Generic IRQ callbacks */
|
|
|
|
|
|
|
|
#define SYS0_HWIRQ 8
|
|
|
|
|
|
|
|
static unsigned int hwirq_is_syswake(irq_hw_number_t hw)
|
|
|
|
{
|
|
|
|
return hw >= SYS0_HWIRQ;
|
|
|
|
}
|
|
|
|
|
|
|
|
static unsigned int hwirq_to_syswake(irq_hw_number_t hw)
|
|
|
|
{
|
|
|
|
return hw - SYS0_HWIRQ;
|
|
|
|
}
|
|
|
|
|
|
|
|
static irq_hw_number_t syswake_to_hwirq(unsigned int syswake)
|
|
|
|
{
|
|
|
|
return SYS0_HWIRQ + syswake;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct pdc_intc_priv *irqd_to_priv(struct irq_data *data)
|
|
|
|
{
|
|
|
|
return (struct pdc_intc_priv *)data->domain->host_data;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* perip_irq_mask() and perip_irq_unmask() use IRQ_ROUTE which also contains
|
|
|
|
* wake bits, therefore we cannot use the generic irqchip mask callbacks as they
|
|
|
|
* cache the mask.
|
|
|
|
*/
|
|
|
|
|
|
|
|
static void perip_irq_mask(struct irq_data *data)
|
|
|
|
{
|
|
|
|
struct pdc_intc_priv *priv = irqd_to_priv(data);
|
|
|
|
|
|
|
|
raw_spin_lock(&priv->lock);
|
|
|
|
priv->irq_route &= ~data->mask;
|
|
|
|
pdc_write(priv, PDC_IRQ_ROUTE, priv->irq_route);
|
|
|
|
raw_spin_unlock(&priv->lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void perip_irq_unmask(struct irq_data *data)
|
|
|
|
{
|
|
|
|
struct pdc_intc_priv *priv = irqd_to_priv(data);
|
|
|
|
|
|
|
|
raw_spin_lock(&priv->lock);
|
|
|
|
priv->irq_route |= data->mask;
|
|
|
|
pdc_write(priv, PDC_IRQ_ROUTE, priv->irq_route);
|
|
|
|
raw_spin_unlock(&priv->lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int syswake_irq_set_type(struct irq_data *data, unsigned int flow_type)
|
|
|
|
{
|
|
|
|
struct pdc_intc_priv *priv = irqd_to_priv(data);
|
|
|
|
unsigned int syswake = hwirq_to_syswake(data->hwirq);
|
|
|
|
unsigned int irq_mode;
|
|
|
|
unsigned int soc_sys_wake_regoff, soc_sys_wake;
|
|
|
|
|
|
|
|
/* translate to syswake IRQ mode */
|
|
|
|
switch (flow_type) {
|
|
|
|
case IRQ_TYPE_EDGE_BOTH:
|
|
|
|
irq_mode = PDC_SYS_WAKE_INT_CHANGE;
|
|
|
|
break;
|
|
|
|
case IRQ_TYPE_EDGE_RISING:
|
|
|
|
irq_mode = PDC_SYS_WAKE_INT_UP;
|
|
|
|
break;
|
|
|
|
case IRQ_TYPE_EDGE_FALLING:
|
|
|
|
irq_mode = PDC_SYS_WAKE_INT_DOWN;
|
|
|
|
break;
|
|
|
|
case IRQ_TYPE_LEVEL_HIGH:
|
|
|
|
irq_mode = PDC_SYS_WAKE_INT_HIGH;
|
|
|
|
break;
|
|
|
|
case IRQ_TYPE_LEVEL_LOW:
|
|
|
|
irq_mode = PDC_SYS_WAKE_INT_LOW;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
raw_spin_lock(&priv->lock);
|
|
|
|
|
|
|
|
/* set the IRQ mode */
|
|
|
|
soc_sys_wake_regoff = PDC_SYS_WAKE_BASE + syswake*PDC_SYS_WAKE_STRIDE;
|
|
|
|
soc_sys_wake = pdc_read(priv, soc_sys_wake_regoff);
|
|
|
|
soc_sys_wake &= ~PDC_SYS_WAKE_INT_MODE;
|
|
|
|
soc_sys_wake |= irq_mode << PDC_SYS_WAKE_INT_MODE_SHIFT;
|
|
|
|
pdc_write(priv, soc_sys_wake_regoff, soc_sys_wake);
|
|
|
|
|
|
|
|
/* and update the handler */
|
|
|
|
irq_setup_alt_chip(data, flow_type);
|
|
|
|
|
|
|
|
raw_spin_unlock(&priv->lock);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* applies to both peripheral and syswake interrupts */
|
|
|
|
static int pdc_irq_set_wake(struct irq_data *data, unsigned int on)
|
|
|
|
{
|
|
|
|
struct pdc_intc_priv *priv = irqd_to_priv(data);
|
|
|
|
irq_hw_number_t hw = data->hwirq;
|
|
|
|
unsigned int mask = (1 << 16) << hw;
|
|
|
|
unsigned int dst_irq;
|
|
|
|
|
|
|
|
raw_spin_lock(&priv->lock);
|
|
|
|
if (on)
|
|
|
|
priv->irq_route |= mask;
|
|
|
|
else
|
|
|
|
priv->irq_route &= ~mask;
|
|
|
|
pdc_write(priv, PDC_IRQ_ROUTE, priv->irq_route);
|
|
|
|
raw_spin_unlock(&priv->lock);
|
|
|
|
|
|
|
|
/* control the destination IRQ wakeup too for standby mode */
|
|
|
|
if (hwirq_is_syswake(hw))
|
|
|
|
dst_irq = priv->syswake_irq;
|
|
|
|
else
|
|
|
|
dst_irq = priv->perip_irqs[hw];
|
|
|
|
irq_set_irq_wake(dst_irq, on);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2015-09-14 15:42:37 +07:00
|
|
|
static void pdc_intc_perip_isr(struct irq_desc *desc)
|
2013-04-22 21:43:50 +07:00
|
|
|
{
|
2015-07-17 03:37:28 +07:00
|
|
|
unsigned int irq = irq_desc_get_irq(desc);
|
2013-04-22 21:43:50 +07:00
|
|
|
struct pdc_intc_priv *priv;
|
|
|
|
unsigned int i, irq_no;
|
|
|
|
|
|
|
|
priv = (struct pdc_intc_priv *)irq_desc_get_handler_data(desc);
|
|
|
|
|
|
|
|
/* find the peripheral number */
|
|
|
|
for (i = 0; i < priv->nr_perips; ++i)
|
|
|
|
if (irq == priv->perip_irqs[i])
|
|
|
|
goto found;
|
|
|
|
|
|
|
|
/* should never get here */
|
|
|
|
return;
|
|
|
|
found:
|
|
|
|
|
|
|
|
/* pass on the interrupt */
|
|
|
|
irq_no = irq_linear_revmap(priv->domain, i);
|
|
|
|
generic_handle_irq(irq_no);
|
|
|
|
}
|
|
|
|
|
2015-09-14 15:42:37 +07:00
|
|
|
static void pdc_intc_syswake_isr(struct irq_desc *desc)
|
2013-04-22 21:43:50 +07:00
|
|
|
{
|
|
|
|
struct pdc_intc_priv *priv;
|
|
|
|
unsigned int syswake, irq_no;
|
|
|
|
unsigned int status;
|
|
|
|
|
|
|
|
priv = (struct pdc_intc_priv *)irq_desc_get_handler_data(desc);
|
|
|
|
|
|
|
|
status = pdc_read(priv, PDC_IRQ_STATUS) &
|
|
|
|
pdc_read(priv, PDC_IRQ_ENABLE);
|
|
|
|
status &= (1 << priv->nr_syswakes) - 1;
|
|
|
|
|
|
|
|
for (syswake = 0; status; status >>= 1, ++syswake) {
|
|
|
|
/* Has this sys_wake triggered? */
|
|
|
|
if (!(status & 1))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
irq_no = irq_linear_revmap(priv->domain,
|
|
|
|
syswake_to_hwirq(syswake));
|
|
|
|
generic_handle_irq(irq_no);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void pdc_intc_setup(struct pdc_intc_priv *priv)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
unsigned int soc_sys_wake_regoff;
|
|
|
|
unsigned int soc_sys_wake;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Mask all syswake interrupts before routing, or we could receive an
|
|
|
|
* interrupt before we're ready to handle it.
|
|
|
|
*/
|
|
|
|
pdc_write(priv, PDC_IRQ_ENABLE, 0);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Enable routing of all syswakes
|
|
|
|
* Disable all wake sources
|
|
|
|
*/
|
|
|
|
priv->irq_route = ((PDC_IRQ_ROUTE_EXT_EN_SYS0 << priv->nr_syswakes) -
|
|
|
|
PDC_IRQ_ROUTE_EXT_EN_SYS0);
|
|
|
|
pdc_write(priv, PDC_IRQ_ROUTE, priv->irq_route);
|
|
|
|
|
|
|
|
/* Initialise syswake IRQ */
|
|
|
|
for (i = 0; i < priv->nr_syswakes; ++i) {
|
|
|
|
/* set the IRQ mode to none */
|
|
|
|
soc_sys_wake_regoff = PDC_SYS_WAKE_BASE + i*PDC_SYS_WAKE_STRIDE;
|
|
|
|
soc_sys_wake = PDC_SYS_WAKE_INT_NONE
|
|
|
|
<< PDC_SYS_WAKE_INT_MODE_SHIFT;
|
|
|
|
pdc_write(priv, soc_sys_wake_regoff, soc_sys_wake);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int pdc_intc_probe(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct pdc_intc_priv *priv;
|
|
|
|
struct device_node *node = pdev->dev.of_node;
|
|
|
|
struct resource *res_regs;
|
|
|
|
struct irq_chip_generic *gc;
|
|
|
|
unsigned int i;
|
|
|
|
int irq, ret;
|
|
|
|
u32 val;
|
|
|
|
|
|
|
|
if (!node)
|
|
|
|
return -ENOENT;
|
|
|
|
|
|
|
|
/* Get registers */
|
|
|
|
res_regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
|
|
if (res_regs == NULL) {
|
|
|
|
dev_err(&pdev->dev, "cannot find registers resource\n");
|
|
|
|
return -ENOENT;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate driver data */
|
|
|
|
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
|
|
|
|
if (!priv) {
|
|
|
|
dev_err(&pdev->dev, "cannot allocate device data\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
raw_spin_lock_init(&priv->lock);
|
|
|
|
platform_set_drvdata(pdev, priv);
|
|
|
|
|
|
|
|
/* Ioremap the registers */
|
|
|
|
priv->pdc_base = devm_ioremap(&pdev->dev, res_regs->start,
|
2017-11-21 05:02:41 +07:00
|
|
|
resource_size(res_regs));
|
2013-04-22 21:43:50 +07:00
|
|
|
if (!priv->pdc_base)
|
|
|
|
return -EIO;
|
|
|
|
|
|
|
|
/* Get number of peripherals */
|
|
|
|
ret = of_property_read_u32(node, "num-perips", &val);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(&pdev->dev, "No num-perips node property found\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (val > SYS0_HWIRQ) {
|
|
|
|
dev_err(&pdev->dev, "num-perips (%u) out of range\n", val);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
priv->nr_perips = val;
|
|
|
|
|
|
|
|
/* Get number of syswakes */
|
|
|
|
ret = of_property_read_u32(node, "num-syswakes", &val);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(&pdev->dev, "No num-syswakes node property found\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
if (val > SYS0_HWIRQ) {
|
|
|
|
dev_err(&pdev->dev, "num-syswakes (%u) out of range\n", val);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
priv->nr_syswakes = val;
|
|
|
|
|
|
|
|
/* Get peripheral IRQ numbers */
|
treewide: devm_kzalloc() -> devm_kcalloc()
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:
devm_kzalloc(handle, a * b, gfp)
with:
devm_kcalloc(handle, a * b, gfp)
as well as handling cases of:
devm_kzalloc(handle, a * b * c, gfp)
with:
devm_kzalloc(handle, array3_size(a, b, c), gfp)
as it's slightly less ugly than:
devm_kcalloc(handle, array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
devm_kzalloc(handle, 4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@
(
devm_kzalloc(HANDLE,
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
devm_kzalloc(HANDLE,
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@
(
devm_kzalloc(HANDLE,
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(char) * COUNT
+ COUNT
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@
(
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE,
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * E2
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * (E2)
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-13 04:07:58 +07:00
|
|
|
priv->perip_irqs = devm_kcalloc(&pdev->dev, 4, priv->nr_perips,
|
2013-04-22 21:43:50 +07:00
|
|
|
GFP_KERNEL);
|
|
|
|
if (!priv->perip_irqs) {
|
|
|
|
dev_err(&pdev->dev, "cannot allocate perip IRQ list\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
for (i = 0; i < priv->nr_perips; ++i) {
|
|
|
|
irq = platform_get_irq(pdev, 1 + i);
|
2019-07-31 01:15:23 +07:00
|
|
|
if (irq < 0)
|
2013-04-22 21:43:50 +07:00
|
|
|
return irq;
|
|
|
|
priv->perip_irqs[i] = irq;
|
|
|
|
}
|
|
|
|
/* check if too many were provided */
|
|
|
|
if (platform_get_irq(pdev, 1 + i) >= 0) {
|
|
|
|
dev_err(&pdev->dev, "surplus perip IRQs detected\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Get syswake IRQ number */
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
2019-07-31 01:15:23 +07:00
|
|
|
if (irq < 0)
|
2013-04-22 21:43:50 +07:00
|
|
|
return irq;
|
|
|
|
priv->syswake_irq = irq;
|
|
|
|
|
|
|
|
/* Set up an IRQ domain */
|
|
|
|
priv->domain = irq_domain_add_linear(node, 16, &irq_generic_chip_ops,
|
|
|
|
priv);
|
|
|
|
if (unlikely(!priv->domain)) {
|
|
|
|
dev_err(&pdev->dev, "cannot add IRQ domain\n");
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Set up 2 generic irq chips with 2 chip types.
|
|
|
|
* The first one for peripheral irqs (only 1 chip type used)
|
|
|
|
* The second one for syswake irqs (edge and level chip types)
|
|
|
|
*/
|
|
|
|
ret = irq_alloc_domain_generic_chips(priv->domain, 8, 2, "pdc",
|
|
|
|
handle_level_irq, 0, 0,
|
|
|
|
IRQ_GC_INIT_NESTED_LOCK);
|
|
|
|
if (ret)
|
|
|
|
goto err_generic;
|
|
|
|
|
|
|
|
/* peripheral interrupt chip */
|
|
|
|
|
|
|
|
gc = irq_get_domain_generic_chip(priv->domain, 0);
|
|
|
|
gc->unused = ~(BIT(priv->nr_perips) - 1);
|
|
|
|
gc->reg_base = priv->pdc_base;
|
|
|
|
/*
|
|
|
|
* IRQ_ROUTE contains wake bits, so we can't use the generic versions as
|
|
|
|
* they cache the mask
|
|
|
|
*/
|
|
|
|
gc->chip_types[0].regs.mask = PDC_IRQ_ROUTE;
|
|
|
|
gc->chip_types[0].chip.irq_mask = perip_irq_mask;
|
|
|
|
gc->chip_types[0].chip.irq_unmask = perip_irq_unmask;
|
|
|
|
gc->chip_types[0].chip.irq_set_wake = pdc_irq_set_wake;
|
|
|
|
|
|
|
|
/* syswake interrupt chip */
|
|
|
|
|
|
|
|
gc = irq_get_domain_generic_chip(priv->domain, 8);
|
|
|
|
gc->unused = ~(BIT(priv->nr_syswakes) - 1);
|
|
|
|
gc->reg_base = priv->pdc_base;
|
|
|
|
|
|
|
|
/* edge interrupts */
|
|
|
|
gc->chip_types[0].type = IRQ_TYPE_EDGE_BOTH;
|
|
|
|
gc->chip_types[0].handler = handle_edge_irq;
|
|
|
|
gc->chip_types[0].regs.ack = PDC_IRQ_CLEAR;
|
|
|
|
gc->chip_types[0].regs.mask = PDC_IRQ_ENABLE;
|
|
|
|
gc->chip_types[0].chip.irq_ack = irq_gc_ack_set_bit;
|
|
|
|
gc->chip_types[0].chip.irq_mask = irq_gc_mask_clr_bit;
|
|
|
|
gc->chip_types[0].chip.irq_unmask = irq_gc_mask_set_bit;
|
|
|
|
gc->chip_types[0].chip.irq_set_type = syswake_irq_set_type;
|
|
|
|
gc->chip_types[0].chip.irq_set_wake = pdc_irq_set_wake;
|
|
|
|
/* for standby we pass on to the shared syswake IRQ */
|
|
|
|
gc->chip_types[0].chip.flags = IRQCHIP_MASK_ON_SUSPEND;
|
|
|
|
|
|
|
|
/* level interrupts */
|
|
|
|
gc->chip_types[1].type = IRQ_TYPE_LEVEL_MASK;
|
|
|
|
gc->chip_types[1].handler = handle_level_irq;
|
|
|
|
gc->chip_types[1].regs.ack = PDC_IRQ_CLEAR;
|
|
|
|
gc->chip_types[1].regs.mask = PDC_IRQ_ENABLE;
|
|
|
|
gc->chip_types[1].chip.irq_ack = irq_gc_ack_set_bit;
|
|
|
|
gc->chip_types[1].chip.irq_mask = irq_gc_mask_clr_bit;
|
|
|
|
gc->chip_types[1].chip.irq_unmask = irq_gc_mask_set_bit;
|
|
|
|
gc->chip_types[1].chip.irq_set_type = syswake_irq_set_type;
|
|
|
|
gc->chip_types[1].chip.irq_set_wake = pdc_irq_set_wake;
|
|
|
|
/* for standby we pass on to the shared syswake IRQ */
|
|
|
|
gc->chip_types[1].chip.flags = IRQCHIP_MASK_ON_SUSPEND;
|
|
|
|
|
|
|
|
/* Set up the hardware to enable interrupt routing */
|
|
|
|
pdc_intc_setup(priv);
|
|
|
|
|
|
|
|
/* Setup chained handlers for the peripheral IRQs */
|
|
|
|
for (i = 0; i < priv->nr_perips; ++i) {
|
|
|
|
irq = priv->perip_irqs[i];
|
irqchip/imgpdc: Consolidate chained IRQ handler install/remove
Chained irq handlers usually set up handler data as well. We now have
a function to set both under irq_desc->lock. Replace the two calls
with one.
Search and conversion was done with coccinelle:
@@
expression E1, E2, E3;
@@
(
-if (irq_set_handler_data(E1, E2) != 0)
- BUG();
|
-irq_set_handler_data(E1, E2);
)
-irq_set_chained_handler(E1, E3);
+irq_set_chained_handler_and_data(E1, E3, E2);
@@
expression E1, E2, E3;
@@
(
-if (irq_set_handler_data(E1, E2) != 0)
- BUG();
...
|
-irq_set_handler_data(E1, E2);
...
)
-irq_set_chained_handler(E1, E3);
+irq_set_chained_handler_and_data(E1, E3, E2);
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
2015-06-22 02:10:54 +07:00
|
|
|
irq_set_chained_handler_and_data(irq, pdc_intc_perip_isr,
|
|
|
|
priv);
|
2013-04-22 21:43:50 +07:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Setup chained handler for the syswake IRQ */
|
irqchip/imgpdc: Consolidate chained IRQ handler install/remove
Chained irq handlers usually set up handler data as well. We now have
a function to set both under irq_desc->lock. Replace the two calls
with one.
Search and conversion was done with coccinelle:
@@
expression E1, E2, E3;
@@
(
-if (irq_set_handler_data(E1, E2) != 0)
- BUG();
|
-irq_set_handler_data(E1, E2);
)
-irq_set_chained_handler(E1, E3);
+irq_set_chained_handler_and_data(E1, E3, E2);
@@
expression E1, E2, E3;
@@
(
-if (irq_set_handler_data(E1, E2) != 0)
- BUG();
...
|
-irq_set_handler_data(E1, E2);
...
)
-irq_set_chained_handler(E1, E3);
+irq_set_chained_handler_and_data(E1, E3, E2);
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
2015-06-22 02:10:54 +07:00
|
|
|
irq_set_chained_handler_and_data(priv->syswake_irq,
|
|
|
|
pdc_intc_syswake_isr, priv);
|
2013-04-22 21:43:50 +07:00
|
|
|
|
|
|
|
dev_info(&pdev->dev,
|
|
|
|
"PDC IRQ controller initialised (%u perip IRQs, %u syswake IRQs)\n",
|
|
|
|
priv->nr_perips,
|
|
|
|
priv->nr_syswakes);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
err_generic:
|
|
|
|
irq_domain_remove(priv->domain);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int pdc_intc_remove(struct platform_device *pdev)
|
|
|
|
{
|
|
|
|
struct pdc_intc_priv *priv = platform_get_drvdata(pdev);
|
|
|
|
|
|
|
|
irq_domain_remove(priv->domain);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct of_device_id pdc_intc_match[] = {
|
|
|
|
{ .compatible = "img,pdc-intc" },
|
|
|
|
{}
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct platform_driver pdc_intc_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "pdc-intc",
|
|
|
|
.of_match_table = pdc_intc_match,
|
|
|
|
},
|
|
|
|
.probe = pdc_intc_probe,
|
|
|
|
.remove = pdc_intc_remove,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init pdc_intc_init(void)
|
|
|
|
{
|
|
|
|
return platform_driver_register(&pdc_intc_driver);
|
|
|
|
}
|
|
|
|
core_initcall(pdc_intc_init);
|