From 1866368a8ab8cacf73aa47f67138040d5620439d Mon Sep 17 00:00:00 2001 From: Yutang Jiang Date: Sat, 24 Dec 2016 01:11:32 +0800 Subject: layerscape: add ls1088ardb device support LS1088A is an ARMv8 implementation combining eight ARM A53 processor cores. The LS1088ARDB is an evaluatoin platform that supports the LS1088A family SoCs. Features summary: - Eight 64-bit ARM v8 Cortex-A53 CPUs - Data path acceleration architecture 2.0 (DPAA2) - Ethernet interfaces - QUADSPI flash, 3 PCIe, 2 USB, 1 SD, 2 DUARTs etc Signed-off-by: Yutang Jiang --- ...-mc-bus-rescan-attribute-to-sync-kernel-w.patch | 78 ++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 target/linux/layerscape/patches-4.4/7191-staging-fsl-mc-bus-rescan-attribute-to-sync-kernel-w.patch (limited to 'target/linux/layerscape/patches-4.4/7191-staging-fsl-mc-bus-rescan-attribute-to-sync-kernel-w.patch') diff --git a/target/linux/layerscape/patches-4.4/7191-staging-fsl-mc-bus-rescan-attribute-to-sync-kernel-w.patch b/target/linux/layerscape/patches-4.4/7191-staging-fsl-mc-bus-rescan-attribute-to-sync-kernel-w.patch new file mode 100644 index 0000000000..d89815d812 --- /dev/null +++ b/target/linux/layerscape/patches-4.4/7191-staging-fsl-mc-bus-rescan-attribute-to-sync-kernel-w.patch @@ -0,0 +1,78 @@ +From 417d71b1e291725c01893bf1553478924d05952f Mon Sep 17 00:00:00 2001 +From: Lijun Pan +Date: Mon, 8 Feb 2016 17:40:16 -0600 +Subject: [PATCH 191/226] staging: fsl-mc: bus rescan attribute to sync kernel + with MC + +Introduce the rescan attribute as a bus attribute to +synchronize the fsl-mc bus objects and the MC firmware. + +To rescan the fsl-mc bus, e.g., +echo 1 > /sys/bus/fsl-mc/rescan + +Signed-off-by: Lijun Pan +--- + drivers/staging/fsl-mc/bus/mc-bus.c | 47 +++++++++++++++++++++++++++++++++++ + 1 file changed, 47 insertions(+) + +--- a/drivers/staging/fsl-mc/bus/mc-bus.c ++++ b/drivers/staging/fsl-mc/bus/mc-bus.c +@@ -139,11 +139,58 @@ static const struct attribute_group *fsl + NULL, + }; + ++static int scan_fsl_mc_bus(struct device *dev, void *data) ++{ ++ unsigned int irq_count; ++ struct fsl_mc_device *root_mc_dev; ++ struct fsl_mc_bus *root_mc_bus; ++ ++ if (fsl_mc_is_root_dprc(dev)) { ++ root_mc_dev = to_fsl_mc_device(dev); ++ root_mc_bus = to_fsl_mc_bus(root_mc_dev); ++ mutex_lock(&root_mc_bus->scan_mutex); ++ dprc_scan_objects(root_mc_dev, &irq_count); ++ mutex_unlock(&root_mc_bus->scan_mutex); ++ } ++ ++ return 0; ++} ++ ++static ssize_t bus_rescan_store(struct bus_type *bus, ++ const char *buf, size_t count) ++{ ++ unsigned long val; ++ ++ if (kstrtoul(buf, 0, &val) < 0) ++ return -EINVAL; ++ ++ if (val) ++ bus_for_each_dev(bus, NULL, NULL, scan_fsl_mc_bus); ++ ++ return count; ++} ++static BUS_ATTR(rescan, (S_IWUSR | S_IWGRP), NULL, bus_rescan_store); ++ ++static struct attribute *fsl_mc_bus_attrs[] = { ++ &bus_attr_rescan.attr, ++ NULL, ++}; ++ ++static const struct attribute_group fsl_mc_bus_group = { ++ .attrs = fsl_mc_bus_attrs, ++}; ++ ++static const struct attribute_group *fsl_mc_bus_groups[] = { ++ &fsl_mc_bus_group, ++ NULL, ++}; ++ + struct bus_type fsl_mc_bus_type = { + .name = "fsl-mc", + .match = fsl_mc_bus_match, + .uevent = fsl_mc_bus_uevent, + .dev_groups = fsl_mc_dev_groups, ++ .bus_groups = fsl_mc_bus_groups, + }; + EXPORT_SYMBOL_GPL(fsl_mc_bus_type); + -- cgit v1.2.3