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authorJohn Crispin <john@phrozen.org>2016-12-25 20:11:34 +0100
committerJohn Crispin <john@phrozen.org>2017-08-05 08:46:36 +0200
commit74d00a8c3849c1340efd713eb94b786e304c201f (patch)
treede481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/pending-4.9/834-ledtrig-libata.patch
parentde350550ef648d9728351b986b0516fa29465c45 (diff)
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kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches * merge debloat patches * merge Kconfig patches * merge swconfig patches * merge hotplug patches * drop 200-fix_localversion.patch - upstream * drop 222-arm_zimage_none.patch - unused * drop 252-mv_cesa_depends.patch - no longer required * drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused * drop 661-fq_codel_keep_dropped_stats.patch - outdated * drop 702-phy_add_aneg_done_function.patch - upstream * drop 840-rtc7301.patch - unused * drop 841-rtc_pt7c4338.patch - upstream * drop 921-use_preinit_as_init.patch - unused * drop spio-gpio-old and gpio-mmc - unused Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/generic/pending-4.9/834-ledtrig-libata.patch')
-rw-r--r--target/linux/generic/pending-4.9/834-ledtrig-libata.patch149
1 files changed, 149 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.9/834-ledtrig-libata.patch b/target/linux/generic/pending-4.9/834-ledtrig-libata.patch
new file mode 100644
index 0000000000..44ee23fb9b
--- /dev/null
+++ b/target/linux/generic/pending-4.9/834-ledtrig-libata.patch
@@ -0,0 +1,149 @@
+From: Daniel Golle <daniel@makrotopia.org>
+Subject: libata: add ledtrig support
+
+This adds a LED trigger for each ATA port indicating disk activity.
+
+As this is needed only on specific platforms (NAS SoCs and such),
+these platforms should define ARCH_WANTS_LIBATA_LEDS if there
+are boards with LED(s) intended to indicate ATA disk activity and
+need the OS to take care of that.
+In that way, if not selected, LED trigger support not will be
+included in libata-core and both, codepaths and structures remain
+untouched.
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+---
+ drivers/ata/Kconfig | 16 ++++++++++++++++
+ drivers/ata/libata-core.c | 41 +++++++++++++++++++++++++++++++++++++++++
+ include/linux/libata.h | 9 +++++++++
+ 3 files changed, 66 insertions(+)
+
+--- a/drivers/ata/Kconfig
++++ b/drivers/ata/Kconfig
+@@ -46,6 +46,22 @@ config ATA_VERBOSE_ERROR
+
+ If unsure, say Y.
+
++config ARCH_WANT_LIBATA_LEDS
++ bool
++
++config ATA_LEDS
++ bool "support ATA port LED triggers"
++ depends on ARCH_WANT_LIBATA_LEDS
++ select NEW_LEDS
++ select LEDS_CLASS
++ select LEDS_TRIGGERS
++ default y
++ help
++ This option adds a LED trigger for each registered ATA port.
++ It is used to drive disk activity leds connected via GPIO.
++
++ If unsure, say N.
++
+ config ATA_ACPI
+ bool "ATA ACPI Support"
+ depends on ACPI
+--- a/drivers/ata/libata-core.c
++++ b/drivers/ata/libata-core.c
+@@ -731,6 +731,19 @@ u64 ata_tf_read_block(const struct ata_t
+ return block;
+ }
+
++#ifdef CONFIG_ATA_LEDS
++#define LIBATA_BLINK_DELAY 20 /* ms */
++static inline void ata_led_act(struct ata_port *ap)
++{
++ unsigned long led_delay = LIBATA_BLINK_DELAY;
++
++ if (unlikely(!ap->ledtrig))
++ return;
++
++ led_trigger_blink_oneshot(ap->ledtrig, &led_delay, &led_delay, 0);
++}
++#endif
++
+ /**
+ * ata_build_rw_tf - Build ATA taskfile for given read/write request
+ * @tf: Target ATA taskfile
+@@ -4963,6 +4976,9 @@ struct ata_queued_cmd *ata_qc_new_init(s
+ if (tag < 0)
+ return NULL;
+ }
++#ifdef CONFIG_ATA_LEDS
++ ata_led_act(ap);
++#endif
+
+ qc = __ata_qc_from_tag(ap, tag);
+ qc->tag = tag;
+@@ -5865,6 +5881,9 @@ struct ata_port *ata_port_alloc(struct a
+ ap->stats.unhandled_irq = 1;
+ ap->stats.idle_irq = 1;
+ #endif
++#ifdef CONFIG_ATA_LEDS
++ ap->ledtrig = kzalloc(sizeof(struct led_trigger), GFP_KERNEL);
++#endif
+ ata_sff_port_init(ap);
+
+ return ap;
+@@ -5886,6 +5905,12 @@ static void ata_host_release(struct devi
+
+ kfree(ap->pmp_link);
+ kfree(ap->slave_link);
++#ifdef CONFIG_ATA_LEDS
++ if (ap->ledtrig) {
++ led_trigger_unregister(ap->ledtrig);
++ kfree(ap->ledtrig);
++ };
++#endif
+ kfree(ap);
+ host->ports[i] = NULL;
+ }
+@@ -6332,7 +6357,23 @@ int ata_host_register(struct ata_host *h
+ host->ports[i]->print_id = atomic_inc_return(&ata_print_id);
+ host->ports[i]->local_port_no = i + 1;
+ }
++#ifdef CONFIG_ATA_LEDS
++ for (i = 0; i < host->n_ports; i++) {
++ if (unlikely(!host->ports[i]->ledtrig))
++ continue;
+
++ snprintf(host->ports[i]->ledtrig_name,
++ sizeof(host->ports[i]->ledtrig_name), "ata%u",
++ host->ports[i]->print_id);
++
++ host->ports[i]->ledtrig->name = host->ports[i]->ledtrig_name;
++
++ if (led_trigger_register(host->ports[i]->ledtrig)) {
++ kfree(host->ports[i]->ledtrig);
++ host->ports[i]->ledtrig = NULL;
++ }
++ }
++#endif
+ /* Create associated sysfs transport objects */
+ for (i = 0; i < host->n_ports; i++) {
+ rc = ata_tport_add(host->dev,host->ports[i]);
+--- a/include/linux/libata.h
++++ b/include/linux/libata.h
+@@ -38,6 +38,9 @@
+ #include <linux/acpi.h>
+ #include <linux/cdrom.h>
+ #include <linux/sched.h>
++#ifdef CONFIG_ATA_LEDS
++#include <linux/leds.h>
++#endif
+
+ /*
+ * Define if arch has non-standard setup. This is a _PCI_ standard
+@@ -883,6 +886,12 @@ struct ata_port {
+ #ifdef CONFIG_ATA_ACPI
+ struct ata_acpi_gtm __acpi_init_gtm; /* use ata_acpi_init_gtm() */
+ #endif
++
++#ifdef CONFIG_ATA_LEDS
++ struct led_trigger *ledtrig;
++ char ledtrig_name[8];
++#endif
++
+ /* owned by EH */
+ u8 sector_buf[ATA_SECT_SIZE] ____cacheline_aligned;
+ };