brcm2708: rename target to bcm27xx

This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 197 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-4.19/950-0757-cpufreq-scpi-scmi-Fix-freeing-of-dynamic-OPPs.patch b/target/linux/bcm27xx/patches-4.19/950-0757-cpufreq-scpi-scmi-Fix-freeing-of-dynamic-OPPs.patch
new file mode 100644
index 0000000000..acdb00fd48
--- /dev/null
+++ b/target/linux/bcm27xx/patches-4.19/950-0757-cpufreq-scpi-scmi-Fix-freeing-of-dynamic-OPPs.patch
@@ -0,0 +1,197 @@
+From 84a8cbf64731568c0750137ec38091a46b81d502 Mon Sep 17 00:00:00 2001
+From: Viresh Kumar <viresh.kumar@linaro.org>
+Date: Fri, 4 Jan 2019 15:14:33 +0530
+Subject: [PATCH] cpufreq: scpi/scmi: Fix freeing of dynamic OPPs
+
+Commit 1690d8bb91e370ab772062b79bd434ce815c4729 upstream
+
+Since the commit 2a4eb7358aba "OPP: Don't remove dynamic OPPs from
+_dev_pm_opp_remove_table()", dynamically created OPP aren't
+automatically removed anymore by dev_pm_opp_cpumask_remove_table(). This
+affects the scpi and scmi cpufreq drivers which no longer free OPPs on
+failures or on invocations of the policy->exit() callback.
+
+Create a generic OPP helper dev_pm_opp_remove_all_dynamic() which can be
+called from these drivers instead of dev_pm_opp_cpumask_remove_table().
+
+In dev_pm_opp_remove_all_dynamic(), we need to make sure that the
+opp_list isn't getting accessed simultaneously from other parts of the
+OPP core while the helper is freeing dynamic OPPs, i.e. we can't drop
+the opp_table->lock while traversing through the OPP list. And to
+accomplish that, this patch also creates _opp_kref_release_unlocked()
+which can be called from this new helper with the opp_table lock already
+held.
+
+Cc: 4.20 <stable@vger.kernel.org> # v4.20
+Reported-by: Valentin Schneider <valentin.schneider@arm.com>
+Fixes: 2a4eb7358aba "OPP: Don't remove dynamic OPPs from _dev_pm_opp_remove_table()"
+Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
+Tested-by: Valentin Schneider <valentin.schneider@arm.com>
+Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
+Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
+---
+ drivers/cpufreq/scmi-cpufreq.c |  4 +--
+ drivers/cpufreq/scpi-cpufreq.c |  4 +--
+ drivers/opp/core.c             | 63 +++++++++++++++++++++++++++++++---
+ include/linux/pm_opp.h         |  5 +++
+ 4 files changed, 67 insertions(+), 9 deletions(-)
+
+--- a/drivers/cpufreq/scmi-cpufreq.c
++++ b/drivers/cpufreq/scmi-cpufreq.c
+@@ -176,7 +176,7 @@ static int scmi_cpufreq_init(struct cpuf
+ out_free_priv:
+ 	kfree(priv);
+ out_free_opp:
+-	dev_pm_opp_cpumask_remove_table(policy->cpus);
++	dev_pm_opp_remove_all_dynamic(cpu_dev);
+ 
+ 	return ret;
+ }
+@@ -188,7 +188,7 @@ static int scmi_cpufreq_exit(struct cpuf
+ 	cpufreq_cooling_unregister(priv->cdev);
+ 	dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table);
+ 	kfree(priv);
+-	dev_pm_opp_cpumask_remove_table(policy->related_cpus);
++	dev_pm_opp_remove_all_dynamic(priv->cpu_dev);
+ 
+ 	return 0;
+ }
+--- a/drivers/cpufreq/scpi-cpufreq.c
++++ b/drivers/cpufreq/scpi-cpufreq.c
+@@ -177,7 +177,7 @@ out_free_cpufreq_table:
+ out_free_priv:
+ 	kfree(priv);
+ out_free_opp:
+-	dev_pm_opp_cpumask_remove_table(policy->cpus);
++	dev_pm_opp_remove_all_dynamic(cpu_dev);
+ 
+ 	return ret;
+ }
+@@ -190,7 +190,7 @@ static int scpi_cpufreq_exit(struct cpuf
+ 	clk_put(priv->clk);
+ 	dev_pm_opp_free_cpufreq_table(priv->cpu_dev, &policy->freq_table);
+ 	kfree(priv);
+-	dev_pm_opp_cpumask_remove_table(policy->related_cpus);
++	dev_pm_opp_remove_all_dynamic(priv->cpu_dev);
+ 
+ 	return 0;
+ }
+--- a/drivers/opp/core.c
++++ b/drivers/opp/core.c
+@@ -884,11 +884,9 @@ void _opp_free(struct dev_pm_opp *opp)
+ 	kfree(opp);
+ }
+ 
+-static void _opp_kref_release(struct kref *kref)
++static void _opp_kref_release(struct dev_pm_opp *opp,
++			      struct opp_table *opp_table)
+ {
+-	struct dev_pm_opp *opp = container_of(kref, struct dev_pm_opp, kref);
+-	struct opp_table *opp_table = opp->opp_table;
+-
+ 	/*
+ 	 * Notify the changes in the availability of the operable
+ 	 * frequency/voltage list.
+@@ -897,7 +895,22 @@ static void _opp_kref_release(struct kre
+ 	opp_debug_remove_one(opp);
+ 	list_del(&opp->node);
+ 	kfree(opp);
++}
++
++static void _opp_kref_release_unlocked(struct kref *kref)
++{
++	struct dev_pm_opp *opp = container_of(kref, struct dev_pm_opp, kref);
++	struct opp_table *opp_table = opp->opp_table;
++
++	_opp_kref_release(opp, opp_table);
++}
+ 
++static void _opp_kref_release_locked(struct kref *kref)
++{
++	struct dev_pm_opp *opp = container_of(kref, struct dev_pm_opp, kref);
++	struct opp_table *opp_table = opp->opp_table;
++
++	_opp_kref_release(opp, opp_table);
+ 	mutex_unlock(&opp_table->lock);
+ 	dev_pm_opp_put_opp_table(opp_table);
+ }
+@@ -909,10 +922,16 @@ void dev_pm_opp_get(struct dev_pm_opp *o
+ 
+ void dev_pm_opp_put(struct dev_pm_opp *opp)
+ {
+-	kref_put_mutex(&opp->kref, _opp_kref_release, &opp->opp_table->lock);
++	kref_put_mutex(&opp->kref, _opp_kref_release_locked,
++		       &opp->opp_table->lock);
+ }
+ EXPORT_SYMBOL_GPL(dev_pm_opp_put);
+ 
++static void dev_pm_opp_put_unlocked(struct dev_pm_opp *opp)
++{
++	kref_put(&opp->kref, _opp_kref_release_unlocked);
++}
++
+ /**
+  * dev_pm_opp_remove()  - Remove an OPP from OPP table
+  * @dev:	device for which we do this operation
+@@ -952,6 +971,40 @@ void dev_pm_opp_remove(struct device *de
+ }
+ EXPORT_SYMBOL_GPL(dev_pm_opp_remove);
+ 
++/**
++ * dev_pm_opp_remove_all_dynamic() - Remove all dynamically created OPPs
++ * @dev:	device for which we do this operation
++ *
++ * This function removes all dynamically created OPPs from the opp table.
++ */
++void dev_pm_opp_remove_all_dynamic(struct device *dev)
++{
++	struct opp_table *opp_table;
++	struct dev_pm_opp *opp, *temp;
++	int count = 0;
++
++	opp_table = _find_opp_table(dev);
++	if (IS_ERR(opp_table))
++		return;
++
++	mutex_lock(&opp_table->lock);
++	list_for_each_entry_safe(opp, temp, &opp_table->opp_list, node) {
++		if (opp->dynamic) {
++			dev_pm_opp_put_unlocked(opp);
++			count++;
++		}
++	}
++	mutex_unlock(&opp_table->lock);
++
++	/* Drop the references taken by dev_pm_opp_add() */
++	while (count--)
++		dev_pm_opp_put_opp_table(opp_table);
++
++	/* Drop the reference taken by _find_opp_table() */
++	dev_pm_opp_put_opp_table(opp_table);
++}
++EXPORT_SYMBOL_GPL(dev_pm_opp_remove_all_dynamic);
++
+ struct dev_pm_opp *_opp_allocate(struct opp_table *table)
+ {
+ 	struct dev_pm_opp *opp;
+--- a/include/linux/pm_opp.h
++++ b/include/linux/pm_opp.h
+@@ -107,6 +107,7 @@ void dev_pm_opp_put(struct dev_pm_opp *o
+ int dev_pm_opp_add(struct device *dev, unsigned long freq,
+ 		   unsigned long u_volt);
+ void dev_pm_opp_remove(struct device *dev, unsigned long freq);
++void dev_pm_opp_remove_all_dynamic(struct device *dev);
+ 
+ int dev_pm_opp_enable(struct device *dev, unsigned long freq);
+ 
+@@ -208,6 +209,10 @@ static inline void dev_pm_opp_remove(str
+ {
+ }
+ 
++static inline void dev_pm_opp_remove_all_dynamic(struct device *dev)
++{
++}
++
+ static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
+ {
+ 	return 0;