target/linux/apm821xx/patches-4.4/040-backport_leds-convert-IDE-trigger-to-common-disk-trigger.patch

   1 From eb25cb9956cc9384b7fa0d75dec908c9fac8c444 Mon Sep 17 00:00:00 2001
   2 From: Stephan Linz <linz@li-pro.net>
   3 Date: Fri, 10 Jun 2016 07:59:56 +0200
   4 Subject: [PATCH] leds: convert IDE trigger to common disk trigger
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 This patch converts the IDE specific LED trigger to a generic disk
  10 activity LED trigger. The libata core is now a trigger source just
  11 like before the IDE disk driver. It's merely a replacement of the
  12 string ide by disk.
  13
  14 The patch is taken from http://dev.gentoo.org/~josejx/ata.patch and is
  15 widely used by any ibook/powerbook owners with great satisfaction.
  16 Likewise, it is very often used successfully on different ARM platforms.
  17
  18 Unlike the original patch, the existing 'ide-disk' trigger is still
  19 available for backward compatibility. That reduce the amount of patches
  20 in affected device trees out of the mainline kernel. For further
  21 development, the new name 'disk-activity' should be used.
  22
  23 Cc: Joseph Jezak <josejx@gentoo.org>
  24 Cc: Jörg Sommer <joerg@alea.gnuu.de>
  25 Cc: Richard Purdie <rpurdie@rpsys.net>
  26 Signed-off-by: Stephan Linz <linz@li-pro.net>
  27 Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
  28 ---
  29  drivers/ata/libata-core.c               |  4 ++++
  30  drivers/ide/ide-disk.c                  |  2 +-
  31  drivers/leds/trigger/Kconfig            |  8 +++----
  32  drivers/leds/trigger/Makefile           |  2 +-
  33  drivers/leds/trigger/ledtrig-disk.c     | 41 +++++++++++++++++++++++++++++++++
  34  drivers/leds/trigger/ledtrig-ide-disk.c | 36 -----------------------------
  35  include/linux/leds.h                    |  6 ++---
  36  8 files changed, 55 insertions(+), 46 deletions(-)
  37  create mode 100644 drivers/leds/trigger/ledtrig-disk.c
  38  delete mode 100644 drivers/leds/trigger/ledtrig-ide-disk.c
  39
  40 diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
  41 index 6be7770..2eca572 100644
  42 --- a/drivers/ata/libata-core.c
  43 +++ b/drivers/ata/libata-core.c
  44 @@ -69,6 +69,7 @@
  45  #include <asm/unaligned.h>
  46  #include <linux/cdrom.h>
  47  #include <linux/ratelimit.h>
  48 +#include <linux/leds.h>
  49  #include <linux/pm_runtime.h>
  50  #include <linux/platform_device.h>
  51
  52 @@ -5072,6 +5073,9 @@ void ata_qc_complete(struct ata_queued_cmd *qc)
  53  {
  54         struct ata_port *ap = qc->ap;
  55
  56 +       /* Trigger the LED (if available) */
  57 +       ledtrig_disk_activity();
  58 +
  59         /* XXX: New EH and old EH use different mechanisms to
  60          * synchronize EH with regular execution path.
  61          *
  62 diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
  63 index 05dbcce..5ceb176 100644
  64 --- a/drivers/ide/ide-disk.c
  65 +++ b/drivers/ide/ide-disk.c
  66 @@ -186,7 +186,7 @@ static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
  67         BUG_ON(drive->dev_flags & IDE_DFLAG_BLOCKED);
  68         BUG_ON(rq->cmd_type != REQ_TYPE_FS);
  69
  70 -       ledtrig_ide_activity();
  71 +       ledtrig_disk_activity();
  72
  73         pr_debug("%s: %sing: block=%llu, sectors=%u\n",
  74                  drive->name, rq_data_dir(rq) == READ ? "read" : "writ",
  75 diff --git a/drivers/leds/trigger/Kconfig b/drivers/leds/trigger/Kconfig
  76 index 9893d91..3f9ddb9 100644
  77 --- a/drivers/leds/trigger/Kconfig
  78 +++ b/drivers/leds/trigger/Kconfig
  79 @@ -33,12 +33,12 @@ config LEDS_TRIGGER_ONESHOT
  80
  81           If unsure, say Y.
  82
  83 -config LEDS_TRIGGER_IDE_DISK
  84 -       bool "LED IDE Disk Trigger"
  85 -       depends on IDE_GD_ATA
  86 +config LEDS_TRIGGER_DISK
  87 +       bool "LED Disk Trigger"
  88 +       depends on IDE_GD_ATA || ATA
  89         depends on LEDS_TRIGGERS
  90         help
  91 -         This allows LEDs to be controlled by IDE disk activity.
  92 +         This allows LEDs to be controlled by disk activity.
  93           If unsure, say Y.
  94
  95  config LEDS_TRIGGER_MTD
  96 diff --git a/drivers/leds/trigger/Makefile b/drivers/leds/trigger/Makefile
  97 index 8cc64a4..a72c43c 100644
  98 --- a/drivers/leds/trigger/Makefile
  99 +++ b/drivers/leds/trigger/Makefile
 100 @@ -1,6 +1,6 @@
 101  obj-$(CONFIG_LEDS_TRIGGER_TIMER)       += ledtrig-timer.o
 102  obj-$(CONFIG_LEDS_TRIGGER_ONESHOT)     += ledtrig-oneshot.o
 103 -obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK)    += ledtrig-ide-disk.o
 104 +obj-$(CONFIG_LEDS_TRIGGER_DISK)                += ledtrig-disk.o
 105  obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT)   += ledtrig-heartbeat.o
 106  obj-$(CONFIG_LEDS_TRIGGER_BACKLIGHT)   += ledtrig-backlight.o
 107  obj-$(CONFIG_LEDS_TRIGGER_GPIO)        += ledtrig-gpio.o
 108 diff --git a/drivers/leds/trigger/ledtrig-disk.c b/drivers/leds/trigger/ledtrig-disk.c
 109 new file mode 100644
 110 index 0000000..cd525b4
 111 --- /dev/null
 112 +++ b/drivers/leds/trigger/ledtrig-disk.c
 113 @@ -0,0 +1,41 @@
 114 +/*
 115 + * LED Disk Activity Trigger
 116 + *
 117 + * Copyright 2006 Openedhand Ltd.
 118 + *
 119 + * Author: Richard Purdie <rpurdie@openedhand.com>
 120 + *
 121 + * This program is free software; you can redistribute it and/or modify
 122 + * it under the terms of the GNU General Public License version 2 as
 123 + * published by the Free Software Foundation.
 124 + *
 125 + */
 126 +
 127 +#include <linux/kernel.h>
 128 +#include <linux/init.h>
 129 +#include <linux/leds.h>
 130 +
 131 +#define BLINK_DELAY 30
 132 +
 133 +DEFINE_LED_TRIGGER(ledtrig_disk);
 134 +DEFINE_LED_TRIGGER(ledtrig_ide);
 135 +
 136 +void ledtrig_disk_activity(void)
 137 +{
 138 +       unsigned long blink_delay = BLINK_DELAY;
 139 +
 140 +       led_trigger_blink_oneshot(ledtrig_disk,
 141 +                                 &blink_delay, &blink_delay, 0);
 142 +       led_trigger_blink_oneshot(ledtrig_ide,
 143 +                                 &blink_delay, &blink_delay, 0);
 144 +}
 145 +EXPORT_SYMBOL(ledtrig_disk_activity);
 146 +
 147 +static int __init ledtrig_disk_init(void)
 148 +{
 149 +       led_trigger_register_simple("disk-activity", &ledtrig_disk);
 150 +       led_trigger_register_simple("ide-disk", &ledtrig_ide);
 151 +
 152 +       return 0;
 153 +}
 154 +device_initcall(ledtrig_disk_init);
 155 diff --git a/drivers/leds/trigger/ledtrig-ide-disk.c b/drivers/leds/trigger/ledtrig-ide-disk.c
 156 deleted file mode 100644
 157 index 15123d3..0000000
 158 --- a/drivers/leds/trigger/ledtrig-ide-disk.c   2016-07-11 18:31:24.000000000 +0200
 159 +++ /dev/null   2016-08-08 12:56:55.887448160 +0200
 160 @@ -1,47 +0,0 @@
 161 -/*
 162 - * LED IDE-Disk Activity Trigger
 163 - *
 164 - * Copyright 2006 Openedhand Ltd.
 165 - *
 166 - * Author: Richard Purdie <rpurdie@openedhand.com>
 167 - *
 168 - * This program is free software; you can redistribute it and/or modify
 169 - * it under the terms of the GNU General Public License version 2 as
 170 - * published by the Free Software Foundation.
 171 - *
 172 - */
 173 -
 174 -#include <linux/module.h>
 175 -#include <linux/kernel.h>
 176 -#include <linux/init.h>
 177 -#include <linux/leds.h>
 178 -
 179 -#define BLINK_DELAY 30
 180 -
 181 -DEFINE_LED_TRIGGER(ledtrig_ide);
 182 -static unsigned long ide_blink_delay = BLINK_DELAY;
 183 -
 184 -void ledtrig_ide_activity(void)
 185 -{
 186 -       led_trigger_blink_oneshot(ledtrig_ide,
 187 -                                 &ide_blink_delay, &ide_blink_delay, 0);
 188 -}
 189 -EXPORT_SYMBOL(ledtrig_ide_activity);
 190 -
 191 -static int __init ledtrig_ide_init(void)
 192 -{
 193 -       led_trigger_register_simple("ide-disk", &ledtrig_ide);
 194 -       return 0;
 195 -}
 196 -
 197 -static void __exit ledtrig_ide_exit(void)
 198 -{
 199 -       led_trigger_unregister_simple(ledtrig_ide);
 200 -}
 201 -
 202 -module_init(ledtrig_ide_init);
 203 -module_exit(ledtrig_ide_exit);
 204 -
 205 -MODULE_AUTHOR("Richard Purdie <rpurdie@openedhand.com>");
 206 -MODULE_DESCRIPTION("LED IDE Disk Activity Trigger");
 207 -MODULE_LICENSE("GPL");
 208 diff --git a/include/linux/leds.h b/include/linux/leds.h
 209 index e5e7f2e..0aa3701 100644
 210 --- a/include/linux/leds.h
 211 +++ b/include/linux/leds.h
 212 @@ -325,10 +325,10 @@ static inline void *led_get_trigger_data(struct led_classdev *led_cdev)
 213  #endif /* CONFIG_LEDS_TRIGGERS */
 214
 215  /* Trigger specific functions */
 216 -#ifdef CONFIG_LEDS_TRIGGER_IDE_DISK
 217 -extern void ledtrig_ide_activity(void);
 218 +#ifdef CONFIG_LEDS_TRIGGER_DISK
 219 +extern void ledtrig_disk_activity(void);
 220  #else
 221 -static inline void ledtrig_ide_activity(void) {}
 222 +static inline void ledtrig_disk_activity(void) {}
 223  #endif
 224
 225  #ifdef CONFIG_LEDS_TRIGGER_MTD
 226 --
 227 2.8.1
 228