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regmap: Updates for v5.2

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A larger than usual set of changes, though mainly small:
 
  - An optimization to the debugfs code to greatly improve performance
    when dumping extremely sparse register maps from Lucas Tanure.
  - Stricter enforcement of writability checks from Han Nandor.
  - A fix for default interrupt mode configuration from Srinivas Kandagatla.
  - SPDX header conversion from Greg Kroah-Hartman.
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Merge tag 'regmap-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "A larger than usual set of changes, though mainly small:

   - An optimization to the debugfs code to greatly improve performance
     when dumping extremely sparse register maps from Lucas Tanure.

   - Stricter enforcement of writability checks from Han Nandor.

   - A fix for default interrupt mode configuration from Srinivas
     Kandagatla.

   - SPDX header conversion from Greg Kroah-Hartman"

* tag 'regmap-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: add proper SPDX identifiers on files that did not have them.
  regmap: verify if register is writeable before writing operations
  regmap: regmap-irq: fix getting type default values
  regmap: debugfs: Jump to the next readable register
  regmap: debugfs: Replace code by already existing function
This commit is contained in:
Linus Torvalds 2019-05-07 07:24:07 -07:00
commit 962d5ecca1
14 changed files with 118 additions and 180 deletions
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5
drivers/base/regmap/internal.h
View File

@ -1,13 +1,10 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Register map access API internal header
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _REGMAP_INTERNAL_H

18
drivers/base/regmap/regcache-flat.c
View File

@ -1,14 +1,10 @@
/*
* Register cache access API - flat caching support
*
* Copyright 2012 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register cache access API - flat caching support
//
// Copyright 2012 Wolfson Microelectronics plc
//
// Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
#include <linux/device.h>
#include <linux/seq_file.h>

18
drivers/base/regmap/regcache-lzo.c
View File

@ -1,14 +1,10 @@
/*
* Register cache access API - LZO caching support
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register cache access API - LZO caching support
//
// Copyright 2011 Wolfson Microelectronics plc
//
// Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
#include <linux/device.h>
#include <linux/lzo.h>

18
drivers/base/regmap/regcache-rbtree.c
View File

@ -1,14 +1,10 @@
/*
* Register cache access API - rbtree caching support
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register cache access API - rbtree caching support
//
// Copyright 2011 Wolfson Microelectronics plc
//
// Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
#include <linux/debugfs.h>
#include <linux/device.h>

18
drivers/base/regmap/regcache.c
View File

@ -1,14 +1,10 @@
/*
* Register cache access API
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register cache access API
//
// Copyright 2011 Wolfson Microelectronics plc
//
// Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
#include <linux/bsearch.h>
#include <linux/device.h>

22
drivers/base/regmap/regmap-ac97.c
View File

@ -1,20 +1,8 @@
/*
* Register map access API - AC'97 support
*
* Copyright 2013 Linaro Ltd. 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register map access API - AC'97 support
//
// Copyright 2013 Linaro Ltd. All rights reserved.
#include <linux/clk.h>
#include <linux/err.h>

48
drivers/base/regmap/regmap-debugfs.c
View File

@ -1,14 +1,10 @@
/*
* Register map access API - debugfs
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register map access API - debugfs
//
// Copyright 2011 Wolfson Microelectronics plc
//
// Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
#include <linux/slab.h>
#include <linux/mutex.h>
@ -195,6 +191,28 @@ static inline void regmap_calc_tot_len(struct regmap *map,
}
}
static int regmap_next_readable_reg(struct regmap *map, int reg)
{
struct regmap_debugfs_off_cache *c;
int ret = -EINVAL;
if (regmap_printable(map, reg + map->reg_stride)) {
ret = reg + map->reg_stride;
} else {
mutex_lock(&map->cache_lock);
list_for_each_entry(c, &map->debugfs_off_cache, list) {
if (reg > c->max_reg)
continue;
if (reg < c->base_reg) {
ret = c->base_reg;
break;
}
}
mutex_unlock(&map->cache_lock);
}
return ret;
}
static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from,
unsigned int to, char __user *user_buf,
size_t count, loff_t *ppos)
@ -218,12 +236,8 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from,
/* Work out which register we're starting at */
start_reg = regmap_debugfs_get_dump_start(map, from, *ppos, &p);
for (i = start_reg; i <= to; i += map->reg_stride) {
if (!regmap_readable(map, i) && !regmap_cached(map, i))
continue;
if (regmap_precious(map, i))
continue;
for (i = start_reg; i >= 0 && i <= to;
i = regmap_next_readable_reg(map, i)) {
/* If we're in the region the user is trying to read */
if (p >= *ppos) {

18
drivers/base/regmap/regmap-i2c.c
View File

@ -1,14 +1,10 @@
/*
* Register map access API - I2C support
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register map access API - I2C support
//
// Copyright 2011 Wolfson Microelectronics plc
//
// Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
#include <linux/regmap.h>
#include <linux/i2c.h>

21
drivers/base/regmap/regmap-irq.c
View File

@ -1,14 +1,10 @@
/*
* regmap based irq_chip
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
// SPDX-License-Identifier: GPL-2.0
//
// regmap based irq_chip
//
// Copyright 2011 Wolfson Microelectronics plc
//
// Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
#include <linux/device.h>
#include <linux/export.h>
@ -761,9 +757,6 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
if (chip->num_type_reg && !chip->type_in_mask) {
for (i = 0; i < chip->num_type_reg; ++i) {
if (!d->type_buf_def[i])
continue;
reg = chip->type_base +
(i * map->reg_stride * d->type_reg_stride);

22
drivers/base/regmap/regmap-mmio.c
View File

@ -1,20 +1,8 @@
/*
* Register map access API - MMIO support
*
* Copyright (c) 2012, 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register map access API - MMIO support
//
// Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
#include <linux/clk.h>
#include <linux/err.h>

18
drivers/base/regmap/regmap-spi.c
View File

@ -1,14 +1,10 @@
/*
* Register map access API - SPI support
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register map access API - SPI support
//
// Copyright 2011 Wolfson Microelectronics plc
//
// Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
#include <linux/regmap.h>
#include <linux/spi/spi.h>

29
drivers/base/regmap/regmap-spmi.c
View File

@ -1,22 +1,13 @@
/*
* Register map access API - SPMI support
*
* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
*
* Based on regmap-i2c.c:
* Copyright 2011 Wolfson Microelectronics plc
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that 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.
*
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register map access API - SPMI support
//
// Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
//
// Based on regmap-i2c.c:
// Copyright 2011 Wolfson Microelectronics plc
// Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
#include <linux/regmap.h>
#include <linux/spmi.h>
#include <linux/module.h>

16
drivers/base/regmap/regmap-w1.c
View File

@ -1,13 +1,9 @@
/*
* Register map access API - W1 (1-Wire) support
*
* Copyright (c) 2017 Radioavionica Corporation
* Author: Alex A. Mihaylov <minimumlaw@rambler.ru>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register map access API - W1 (1-Wire) support
//
// Copyright (c) 2017 Radioavionica Corporation
// Author: Alex A. Mihaylov <minimumlaw@rambler.ru>
#include <linux/regmap.h>
#include <linux/module.h>

27
drivers/base/regmap/regmap.c
View File

@ -1,14 +1,10 @@
/*
* Register map access API
*
* Copyright 2011 Wolfson Microelectronics plc
*
* Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
// SPDX-License-Identifier: GPL-2.0
//
// Register map access API
//
// Copyright 2011 Wolfson Microelectronics plc
//
// Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
#include <linux/device.h>
#include <linux/slab.h>
@ -1493,11 +1489,10 @@ static int _regmap_raw_write_impl(struct regmap *map, unsigned int reg,
WARN_ON(!map->bus);
/* Check for unwritable registers before we start */
if (map->writeable_reg)
for (i = 0; i < val_len / map->format.val_bytes; i++)
if (!map->writeable_reg(map->dev,
reg + regmap_get_offset(map, i)))
return -EINVAL;
for (i = 0; i < val_len / map->format.val_bytes; i++)
if (!regmap_writeable(map,
reg + regmap_get_offset(map, i)))
return -EINVAL;
if (!map->cache_bypass && map->format.parse_val) {
unsigned int ival;