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-rw-r--r--drivers/base/Kconfig1
-rw-r--r--drivers/base/Makefile1
-rw-r--r--drivers/base/base.h1
-rw-r--r--drivers/base/devtmpfs.c1
-rw-r--r--drivers/base/dma-coherent.c1
-rw-r--r--drivers/base/memory.c1
-rw-r--r--drivers/base/node.c1
-rw-r--r--drivers/base/power/Makefile1
-rw-r--r--drivers/base/power/power.h1
-rw-r--r--drivers/base/regmap/Kconfig5
-rw-r--r--drivers/base/regmap/Makefile1
-rw-r--r--drivers/base/regmap/internal.h2
-rw-r--r--drivers/base/regmap/regmap-spi.c2
-rw-r--r--drivers/base/regmap/regmap-spmi.c4
-rw-r--r--drivers/base/regmap/regmap.c111
-rw-r--r--drivers/base/regmap/trace.h1
-rw-r--r--drivers/base/test/Kconfig1
17 files changed, 117 insertions, 19 deletions
diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 1a5f6a157a57..2f6614c9a229 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
menu "Generic Driver Options"
config UEVENT_HELPER
diff --git a/drivers/base/Makefile b/drivers/base/Makefile
index 397e5c344e6a..e32a52490051 100644
--- a/drivers/base/Makefile
+++ b/drivers/base/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
# Makefile for the Linux device tree
obj-y := component.o core.o bus.o dd.o syscore.o \
diff --git a/drivers/base/base.h b/drivers/base/base.h
index 539432a14b5c..d800de650fa5 100644
--- a/drivers/base/base.h
+++ b/drivers/base/base.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/notifier.h>
/**
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index d2fb9c8ed205..50025d7959cb 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* devtmpfs - kernel-maintained tmpfs-based /dev
*
diff --git a/drivers/base/dma-coherent.c b/drivers/base/dma-coherent.c
index 744f64f43454..1e6396bb807b 100644
--- a/drivers/base/dma-coherent.c
+++ b/drivers/base/dma-coherent.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Coherent per-device memory handling.
* Borrowed from i386
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 4e3b61cda520..1d60b58a8c19 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Memory subsystem support
*
diff --git a/drivers/base/node.c b/drivers/base/node.c
index aae2402f3791..ee090ab9171c 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Basic Node interface support
*/
diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile
index 5998c53280f5..29cd71d8b360 100644
--- a/drivers/base/power/Makefile
+++ b/drivers/base/power/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_PM) += sysfs.o generic_ops.o common.o qos.o runtime.o wakeirq.o
obj-$(CONFIG_PM_SLEEP) += main.o wakeup.o
obj-$(CONFIG_PM_TRACE_RTC) += trace.o
diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h
index a46e97e515c5..7beee75399d4 100644
--- a/drivers/base/power/power.h
+++ b/drivers/base/power/power.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/pm_qos.h>
static inline void device_pm_init_common(struct device *dev)
diff --git a/drivers/base/regmap/Kconfig b/drivers/base/regmap/Kconfig
index 073c0b77e5b3..3a1535d812d8 100644
--- a/drivers/base/regmap/Kconfig
+++ b/drivers/base/regmap/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
# Generic register map support. There are no user servicable options here,
# this is an API intended to be used by other kernel subsystems. These
# subsystems should select the appropriate symbols.
@@ -5,6 +6,7 @@
config REGMAP
default y if (REGMAP_I2C || REGMAP_SPI || REGMAP_SPMI || REGMAP_W1 || REGMAP_AC97 || REGMAP_MMIO || REGMAP_IRQ)
select IRQ_DOMAIN if REGMAP_IRQ
+ select REGMAP_HWSPINLOCK if HWSPINLOCK=y
bool
config REGCACHE_COMPRESSED
@@ -36,3 +38,6 @@ config REGMAP_MMIO
config REGMAP_IRQ
bool
+
+config REGMAP_HWSPINLOCK
+ bool
diff --git a/drivers/base/regmap/Makefile b/drivers/base/regmap/Makefile
index 0cf4abc8fbf1..0d298c446108 100644
--- a/drivers/base/regmap/Makefile
+++ b/drivers/base/regmap/Makefile
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
# For include/trace/define_trace.h to include trace.h
CFLAGS_regmap.o := -I$(src)
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 2a4435d76028..8641183cac2f 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -157,6 +157,8 @@ struct regmap {
struct rb_root range_tree;
void *selector_work_buf; /* Scratch buffer used for selector */
+
+ struct hwspinlock *hwlock;
};
struct regcache_ops {
diff --git a/drivers/base/regmap/regmap-spi.c b/drivers/base/regmap/regmap-spi.c
index edd9a839d004..c7150dd264d5 100644
--- a/drivers/base/regmap/regmap-spi.c
+++ b/drivers/base/regmap/regmap-spi.c
@@ -102,7 +102,7 @@ static int regmap_spi_read(void *context,
return spi_write_then_read(spi, reg, reg_size, val, val_size);
}
-static struct regmap_bus regmap_spi = {
+static const struct regmap_bus regmap_spi = {
.write = regmap_spi_write,
.gather_write = regmap_spi_gather_write,
.async_write = regmap_spi_async_write,
diff --git a/drivers/base/regmap/regmap-spmi.c b/drivers/base/regmap/regmap-spmi.c
index 4a36e415e938..0bfb8ed244d5 100644
--- a/drivers/base/regmap/regmap-spmi.c
+++ b/drivers/base/regmap/regmap-spmi.c
@@ -83,7 +83,7 @@ static int regmap_spmi_base_write(void *context, const void *data,
count - 1);
}
-static struct regmap_bus regmap_spmi_base = {
+static const struct regmap_bus regmap_spmi_base = {
.read = regmap_spmi_base_read,
.write = regmap_spmi_base_write,
.gather_write = regmap_spmi_base_gather_write,
@@ -203,7 +203,7 @@ static int regmap_spmi_ext_write(void *context, const void *data,
count - 2);
}
-static struct regmap_bus regmap_spmi_ext = {
+static const struct regmap_bus regmap_spmi_ext = {
.read = regmap_spmi_ext_read,
.write = regmap_spmi_ext_write,
.gather_write = regmap_spmi_ext_gather_write,
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index b9a779a4a739..8d516a9bfc01 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -20,6 +20,7 @@
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/log2.h>
+#include <linux/hwspinlock.h>
#define CREATE_TRACE_POINTS
#include "trace.h"
@@ -413,6 +414,51 @@ static unsigned int regmap_parse_64_native(const void *buf)
}
#endif
+#ifdef REGMAP_HWSPINLOCK
+static void regmap_lock_hwlock(void *__map)
+{
+ struct regmap *map = __map;
+
+ hwspin_lock_timeout(map->hwlock, UINT_MAX);
+}
+
+static void regmap_lock_hwlock_irq(void *__map)
+{
+ struct regmap *map = __map;
+
+ hwspin_lock_timeout_irq(map->hwlock, UINT_MAX);
+}
+
+static void regmap_lock_hwlock_irqsave(void *__map)
+{
+ struct regmap *map = __map;
+
+ hwspin_lock_timeout_irqsave(map->hwlock, UINT_MAX,
+ &map->spinlock_flags);
+}
+
+static void regmap_unlock_hwlock(void *__map)
+{
+ struct regmap *map = __map;
+
+ hwspin_unlock(map->hwlock);
+}
+
+static void regmap_unlock_hwlock_irq(void *__map)
+{
+ struct regmap *map = __map;
+
+ hwspin_unlock_irq(map->hwlock);
+}
+
+static void regmap_unlock_hwlock_irqrestore(void *__map)
+{
+ struct regmap *map = __map;
+
+ hwspin_unlock_irqrestore(map->hwlock, &map->spinlock_flags);
+}
+#endif
+
static void regmap_lock_mutex(void *__map)
{
struct regmap *map = __map;
@@ -627,6 +673,34 @@ struct regmap *__regmap_init(struct device *dev,
map->lock = config->lock;
map->unlock = config->unlock;
map->lock_arg = config->lock_arg;
+ } else if (config->hwlock_id) {
+#ifdef REGMAP_HWSPINLOCK
+ map->hwlock = hwspin_lock_request_specific(config->hwlock_id);
+ if (!map->hwlock) {
+ ret = -ENXIO;
+ goto err_map;
+ }
+
+ switch (config->hwlock_mode) {
+ case HWLOCK_IRQSTATE:
+ map->lock = regmap_lock_hwlock_irqsave;
+ map->unlock = regmap_unlock_hwlock_irqrestore;
+ break;
+ case HWLOCK_IRQ:
+ map->lock = regmap_lock_hwlock_irq;
+ map->unlock = regmap_unlock_hwlock_irq;
+ break;
+ default:
+ map->lock = regmap_lock_hwlock;
+ map->unlock = regmap_unlock_hwlock;
+ break;
+ }
+
+ map->lock_arg = map;
+#else
+ ret = -EINVAL;
+ goto err_map;
+#endif
} else {
if ((bus && bus->fast_io) ||
config->fast_io) {
@@ -729,7 +803,7 @@ struct regmap *__regmap_init(struct device *dev,
map->format.format_write = regmap_format_2_6_write;
break;
default:
- goto err_map;
+ goto err_hwlock;
}
break;
@@ -739,7 +813,7 @@ struct regmap *__regmap_init(struct device *dev,
map->format.format_write = regmap_format_4_12_write;
break;
default:
- goto err_map;
+ goto err_hwlock;
}
break;
@@ -749,7 +823,7 @@ struct regmap *__regmap_init(struct device *dev,
map->format.format_write = regmap_format_7_9_write;
break;
default:
- goto err_map;
+ goto err_hwlock;
}
break;
@@ -759,7 +833,7 @@ struct regmap *__regmap_init(struct device *dev,
map->format.format_write = regmap_format_10_14_write;
break;
default:
- goto err_map;
+ goto err_hwlock;
}
break;
@@ -779,13 +853,13 @@ struct regmap *__regmap_init(struct device *dev,
map->format.format_reg = regmap_format_16_native;
break;
default:
- goto err_map;
+ goto err_hwlock;
}
break;
case 24:
if (reg_endian != REGMAP_ENDIAN_BIG)
- goto err_map;
+ goto err_hwlock;
map->format.format_reg = regmap_format_24;
break;
@@ -801,7 +875,7 @@ struct regmap *__regmap_init(struct device *dev,
map->format.format_reg = regmap_format_32_native;
break;
default:
- goto err_map;
+ goto err_hwlock;
}
break;
@@ -818,13 +892,13 @@ struct regmap *__regmap_init(struct device *dev,
map->format.format_reg = regmap_format_64_native;
break;
default:
- goto err_map;
+ goto err_hwlock;
}
break;
#endif
default:
- goto err_map;
+ goto err_hwlock;
}
if (val_endian == REGMAP_ENDIAN_NATIVE)
@@ -853,12 +927,12 @@ struct regmap *__regmap_init(struct device *dev,
map->format.parse_val = regmap_parse_16_native;
break;
default:
- goto err_map;
+ goto err_hwlock;
}
break;
case 24:
if (val_endian != REGMAP_ENDIAN_BIG)
- goto err_map;
+ goto err_hwlock;
map->format.format_val = regmap_format_24;
map->format.parse_val = regmap_parse_24;
break;
@@ -879,7 +953,7 @@ struct regmap *__regmap_init(struct device *dev,
map->format.parse_val = regmap_parse_32_native;
break;
default:
- goto err_map;
+ goto err_hwlock;
}
break;
#ifdef CONFIG_64BIT
@@ -900,7 +974,7 @@ struct regmap *__regmap_init(struct device *dev,
map->format.parse_val = regmap_parse_64_native;
break;
default:
- goto err_map;
+ goto err_hwlock;
}
break;
#endif
@@ -909,18 +983,18 @@ struct regmap *__regmap_init(struct device *dev,
if (map->format.format_write) {
if ((reg_endian != REGMAP_ENDIAN_BIG) ||
(val_endian != REGMAP_ENDIAN_BIG))
- goto err_map;
+ goto err_hwlock;
map->use_single_write = true;
}
if (!map->format.format_write &&
!(map->format.format_reg && map->format.format_val))
- goto err_map;
+ goto err_hwlock;
map->work_buf = kzalloc(map->format.buf_size, GFP_KERNEL);
if (map->work_buf == NULL) {
ret = -ENOMEM;
- goto err_map;
+ goto err_hwlock;
}
if (map->format.format_write) {
@@ -1041,6 +1115,9 @@ err_regcache:
err_range:
regmap_range_exit(map);
kfree(map->work_buf);
+err_hwlock:
+ if (IS_ENABLED(REGMAP_HWSPINLOCK) && map->hwlock)
+ hwspin_lock_free(map->hwlock);
err_map:
kfree(map);
err:
@@ -1228,6 +1305,8 @@ void regmap_exit(struct regmap *map)
kfree(async->work_buf);
kfree(async);
}
+ if (IS_ENABLED(REGMAP_HWSPINLOCK) && map->hwlock)
+ hwspin_lock_free(map->hwlock);
kfree(map);
}
EXPORT_SYMBOL_GPL(regmap_exit);
diff --git a/drivers/base/regmap/trace.h b/drivers/base/regmap/trace.h
index 64586a1c5a42..d4066fa079ab 100644
--- a/drivers/base/regmap/trace.h
+++ b/drivers/base/regmap/trace.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM regmap
diff --git a/drivers/base/test/Kconfig b/drivers/base/test/Kconfig
index 9aa0d45a60db..86e85daa80bf 100644
--- a/drivers/base/test/Kconfig
+++ b/drivers/base/test/Kconfig
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
config TEST_ASYNC_DRIVER_PROBE
tristate "Build kernel module to test asynchronous driver probing"
depends on m
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-18 10:51:54 +0300