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authorLinus Torvalds2021-04-30 12:48:14 -0700
committerLinus Torvalds2021-04-30 12:48:14 -0700
commitb71428d7ab333a157216a1d73c8c82a178efada9 (patch)
tree94d268210d84948d5984f2fbe7d890c4aed1fabe /drivers/reset
parent95275402f66e88c56144a2d859c13594b651b29b (diff)
parent2e6a731296be9d356fdccee9fb6ae345dad96438 (diff)
Merge tag 'sound-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai: "No surprises in this development cycle, and most of work is about the fixes and the improvements of the existing code, while a new LED control layer and a few new drivers have been introduced. Here are some highlights: Core: - A common mute-LED framework was introduced. It is used by HD-audio for now, more adaption will follow later. The former "Mic Mute-LED Mode" mixer control has been replaced with the corresponding sysfs now. - User-control management was changed to count consumed bytes instead of capping by number of elements; this will allow more controls in the normal usage pattern while avoiding the possible memory exhaustion DoS ASoC: - Continued refactoring and cleanups in ASoC core and generic card drivers - Wide range of small cppcheck and warning fixes - New drivers for Freescale i.MX DMA over rpmsg, Mediatek MT6358 accessory detection, and Realtek RT1019, RT1316, RT711 and RT715 USB-audio: - Continued improvements and fixes of the implicit feedback mode, including better support for Pioneer and Roland/BOSS devices HD-audio: - Default back to non-buffer preallocation on x86 - Cirrus codec improvements, more quirks for Realtek codecs Others: - New virtio sound driver - FireWire Bebob updates" * tag 'sound-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (587 commits) ALSA: hda/conexant: Re-order CX5066 quirk table entries ALSA: hda/realtek: Remove redundant entry for ALC861 Haier/Uniwill devices ALSA: hda/realtek: Re-order ALC662 quirk table entries ALSA: hda/realtek: Re-order remaining ALC269 quirk table entries ALSA: hda/realtek: Re-order ALC269 Lenovo quirk table entries ALSA: hda/realtek: Re-order ALC269 Sony quirk table entries ALSA: hda/realtek: Re-order ALC269 ASUS quirk table entries ALSA: hda/realtek: Re-order ALC269 Dell quirk table entries ALSA: hda/realtek: Re-order ALC269 Acer quirk table entries ALSA: hda/realtek: Re-order ALC269 HP quirk table entries ALSA: hda/realtek: Re-order ALC882 Clevo quirk table entries ALSA: hda/realtek: Re-order ALC882 Sony quirk table entries ALSA: hda/realtek: Re-order ALC882 Acer quirk table entries ALSA: usb-audio: Remove redundant assignment to len ALSA: hda/realtek: Add quirk for Intel Clevo PCx0Dx ALSA: virtio: fix kernel-doc ALSA: hda/cirrus: Use CS8409 filter to fix abnormal sounds on Bullseye ALSA: hda/cirrus: Set Initial DMIC volume for Bullseye to -26 dB ALSA: sb: Fix two use after free in snd_sb_qsound_build ALSA: emu8000: Fix a use after free in snd_emu8000_create_mixer ...
Diffstat (limited to 'drivers/reset')
-rw-r--r--drivers/reset/core.c215
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index dbf881b586d9..71c1c8264b2d 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -359,6 +359,30 @@ int reset_control_reset(struct reset_control *rstc)
EXPORT_SYMBOL_GPL(reset_control_reset);
/**
+ * reset_control_bulk_reset - reset the controlled devices in order
+ * @num_rstcs: number of entries in rstcs array
+ * @rstcs: array of struct reset_control_bulk_data with reset controls set
+ *
+ * Issue a reset on all provided reset controls, in order.
+ *
+ * See also: reset_control_reset()
+ */
+int reset_control_bulk_reset(int num_rstcs,
+ struct reset_control_bulk_data *rstcs)
+{
+ int ret, i;
+
+ for (i = 0; i < num_rstcs; i++) {
+ ret = reset_control_reset(rstcs[i].rstc);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(reset_control_bulk_reset);
+
+/**
* reset_control_rearm - allow shared reset line to be re-triggered"
* @rstc: reset controller
*
@@ -462,6 +486,36 @@ int reset_control_assert(struct reset_control *rstc)
EXPORT_SYMBOL_GPL(reset_control_assert);
/**
+ * reset_control_bulk_assert - asserts the reset lines in order
+ * @num_rstcs: number of entries in rstcs array
+ * @rstcs: array of struct reset_control_bulk_data with reset controls set
+ *
+ * Assert the reset lines for all provided reset controls, in order.
+ * If an assertion fails, already asserted resets are deasserted again.
+ *
+ * See also: reset_control_assert()
+ */
+int reset_control_bulk_assert(int num_rstcs,
+ struct reset_control_bulk_data *rstcs)
+{
+ int ret, i;
+
+ for (i = 0; i < num_rstcs; i++) {
+ ret = reset_control_assert(rstcs[i].rstc);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ while (i--)
+ reset_control_deassert(rstcs[i].rstc);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(reset_control_bulk_assert);
+
+/**
* reset_control_deassert - deasserts the reset line
* @rstc: reset controller
*
@@ -512,6 +566,36 @@ int reset_control_deassert(struct reset_control *rstc)
EXPORT_SYMBOL_GPL(reset_control_deassert);
/**
+ * reset_control_bulk_deassert - deasserts the reset lines in reverse order
+ * @num_rstcs: number of entries in rstcs array
+ * @rstcs: array of struct reset_control_bulk_data with reset controls set
+ *
+ * Deassert the reset lines for all provided reset controls, in reverse order.
+ * If a deassertion fails, already deasserted resets are asserted again.
+ *
+ * See also: reset_control_deassert()
+ */
+int reset_control_bulk_deassert(int num_rstcs,
+ struct reset_control_bulk_data *rstcs)
+{
+ int ret, i;
+
+ for (i = num_rstcs - 1; i >= 0; i--) {
+ ret = reset_control_deassert(rstcs[i].rstc);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ while (i < num_rstcs)
+ reset_control_assert(rstcs[i++].rstc);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(reset_control_bulk_deassert);
+
+/**
* reset_control_status - returns a negative errno if not supported, a
* positive value if the reset line is asserted, or zero if the reset
* line is not asserted or if the desc is NULL (optional reset).
@@ -589,6 +673,36 @@ int reset_control_acquire(struct reset_control *rstc)
EXPORT_SYMBOL_GPL(reset_control_acquire);
/**
+ * reset_control_bulk_acquire - acquires reset controls for exclusive use
+ * @num_rstcs: number of entries in rstcs array
+ * @rstcs: array of struct reset_control_bulk_data with reset controls set
+ *
+ * This is used to explicitly acquire reset controls requested with
+ * reset_control_bulk_get_exclusive_release() for temporary exclusive use.
+ *
+ * See also: reset_control_acquire(), reset_control_bulk_release()
+ */
+int reset_control_bulk_acquire(int num_rstcs,
+ struct reset_control_bulk_data *rstcs)
+{
+ int ret, i;
+
+ for (i = 0; i < num_rstcs; i++) {
+ ret = reset_control_acquire(rstcs[i].rstc);
+ if (ret)
+ goto err;
+ }
+
+ return 0;
+
+err:
+ while (i--)
+ reset_control_release(rstcs[i].rstc);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(reset_control_bulk_acquire);
+
+/**
* reset_control_release() - releases exclusive access to a reset control
* @rstc: reset control
*
@@ -610,6 +724,26 @@ void reset_control_release(struct reset_control *rstc)
}
EXPORT_SYMBOL_GPL(reset_control_release);
+/**
+ * reset_control_bulk_release() - releases exclusive access to reset controls
+ * @num_rstcs: number of entries in rstcs array
+ * @rstcs: array of struct reset_control_bulk_data with reset controls set
+ *
+ * Releases exclusive access right to reset controls previously obtained by a
+ * call to reset_control_bulk_acquire().
+ *
+ * See also: reset_control_release(), reset_control_bulk_acquire()
+ */
+void reset_control_bulk_release(int num_rstcs,
+ struct reset_control_bulk_data *rstcs)
+{
+ int i;
+
+ for (i = 0; i < num_rstcs; i++)
+ reset_control_release(rstcs[i].rstc);
+}
+EXPORT_SYMBOL_GPL(reset_control_bulk_release);
+
static struct reset_control *__reset_control_get_internal(
struct reset_controller_dev *rcdev,
unsigned int index, bool shared, bool acquired)
@@ -814,6 +948,32 @@ struct reset_control *__reset_control_get(struct device *dev, const char *id,
}
EXPORT_SYMBOL_GPL(__reset_control_get);
+int __reset_control_bulk_get(struct device *dev, int num_rstcs,
+ struct reset_control_bulk_data *rstcs,
+ bool shared, bool optional, bool acquired)
+{
+ int ret, i;
+
+ for (i = 0; i < num_rstcs; i++) {
+ rstcs[i].rstc = __reset_control_get(dev, rstcs[i].id, 0,
+ shared, optional, acquired);
+ if (IS_ERR(rstcs[i].rstc)) {
+ ret = PTR_ERR(rstcs[i].rstc);
+ goto err;
+ }
+ }
+
+ return 0;
+
+err:
+ mutex_lock(&reset_list_mutex);
+ while (i--)
+ __reset_control_put_internal(rstcs[i].rstc);
+ mutex_unlock(&reset_list_mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(__reset_control_bulk_get);
+
static void reset_control_array_put(struct reset_control_array *resets)
{
int i;
@@ -845,6 +1005,23 @@ void reset_control_put(struct reset_control *rstc)
}
EXPORT_SYMBOL_GPL(reset_control_put);
+/**
+ * reset_control_bulk_put - free the reset controllers
+ * @num_rstcs: number of entries in rstcs array
+ * @rstcs: array of struct reset_control_bulk_data with reset controls set
+ */
+void reset_control_bulk_put(int num_rstcs, struct reset_control_bulk_data *rstcs)
+{
+ mutex_lock(&reset_list_mutex);
+ while (num_rstcs--) {
+ if (IS_ERR_OR_NULL(rstcs[num_rstcs].rstc))
+ continue;
+ __reset_control_put_internal(rstcs[num_rstcs].rstc);
+ }
+ mutex_unlock(&reset_list_mutex);
+}
+EXPORT_SYMBOL_GPL(reset_control_bulk_put);
+
static void devm_reset_control_release(struct device *dev, void *res)
{
reset_control_put(*(struct reset_control **)res);
@@ -874,6 +1051,44 @@ struct reset_control *__devm_reset_control_get(struct device *dev,
}
EXPORT_SYMBOL_GPL(__devm_reset_control_get);
+struct reset_control_bulk_devres {
+ int num_rstcs;
+ struct reset_control_bulk_data *rstcs;
+};
+
+static void devm_reset_control_bulk_release(struct device *dev, void *res)
+{
+ struct reset_control_bulk_devres *devres = res;
+
+ reset_control_bulk_put(devres->num_rstcs, devres->rstcs);
+}
+
+int __devm_reset_control_bulk_get(struct device *dev, int num_rstcs,
+ struct reset_control_bulk_data *rstcs,
+ bool shared, bool optional, bool acquired)
+{
+ struct reset_control_bulk_devres *ptr;
+ int ret;
+
+ ptr = devres_alloc(devm_reset_control_bulk_release, sizeof(*ptr),
+ GFP_KERNEL);
+ if (!ptr)
+ return -ENOMEM;
+
+ ret = __reset_control_bulk_get(dev, num_rstcs, rstcs, shared, optional, acquired);
+ if (ret < 0) {
+ devres_free(ptr);
+ return ret;
+ }
+
+ ptr->num_rstcs = num_rstcs;
+ ptr->rstcs = rstcs;
+ devres_add(dev, ptr);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(__devm_reset_control_bulk_get);
+
/**
* __device_reset - find reset controller associated with the device
* and perform reset