aboutsummaryrefslogtreecommitdiff
path: root/sound/pci/hda/hda_sysfs.c
diff options
context:
space:
mode:
authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /sound/pci/hda/hda_sysfs.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
Diffstat (limited to 'sound/pci/hda/hda_sysfs.c')
-rw-r--r--sound/pci/hda/hda_sysfs.c796
1 files changed, 796 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_sysfs.c b/sound/pci/hda/hda_sysfs.c
new file mode 100644
index 000000000..69ebc37a4
--- /dev/null
+++ b/sound/pci/hda/hda_sysfs.c
@@ -0,0 +1,796 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * sysfs interface for HD-audio codec
+ *
+ * Copyright (c) 2014 Takashi Iwai <tiwai@suse.de>
+ *
+ * split from hda_hwdep.c
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/compat.h>
+#include <linux/mutex.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/export.h>
+#include <sound/core.h>
+#include <sound/hda_codec.h>
+#include "hda_local.h"
+#include <sound/hda_hwdep.h>
+#include <sound/minors.h>
+
+/* hint string pair */
+struct hda_hint {
+ const char *key;
+ const char *val; /* contained in the same alloc as key */
+};
+
+#ifdef CONFIG_PM
+static ssize_t power_on_acct_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hda_codec *codec = dev_get_drvdata(dev);
+ snd_hda_update_power_acct(codec);
+ return sysfs_emit(buf, "%u\n", jiffies_to_msecs(codec->power_on_acct));
+}
+
+static ssize_t power_off_acct_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hda_codec *codec = dev_get_drvdata(dev);
+ snd_hda_update_power_acct(codec);
+ return sysfs_emit(buf, "%u\n", jiffies_to_msecs(codec->power_off_acct));
+}
+
+static DEVICE_ATTR_RO(power_on_acct);
+static DEVICE_ATTR_RO(power_off_acct);
+#endif /* CONFIG_PM */
+
+#define CODEC_INFO_SHOW(type, field) \
+static ssize_t type##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ struct hda_codec *codec = dev_get_drvdata(dev); \
+ return sysfs_emit(buf, "0x%x\n", codec->field); \
+}
+
+#define CODEC_INFO_STR_SHOW(type, field) \
+static ssize_t type##_show(struct device *dev, \
+ struct device_attribute *attr, \
+ char *buf) \
+{ \
+ struct hda_codec *codec = dev_get_drvdata(dev); \
+ return sysfs_emit(buf, "%s\n", \
+ codec->field ? codec->field : ""); \
+}
+
+CODEC_INFO_SHOW(vendor_id, core.vendor_id);
+CODEC_INFO_SHOW(subsystem_id, core.subsystem_id);
+CODEC_INFO_SHOW(revision_id, core.revision_id);
+CODEC_INFO_SHOW(afg, core.afg);
+CODEC_INFO_SHOW(mfg, core.mfg);
+CODEC_INFO_STR_SHOW(vendor_name, core.vendor_name);
+CODEC_INFO_STR_SHOW(chip_name, core.chip_name);
+CODEC_INFO_STR_SHOW(modelname, modelname);
+
+static ssize_t pin_configs_show(struct hda_codec *codec,
+ struct snd_array *list,
+ char *buf)
+{
+ const struct hda_pincfg *pin;
+ int i, len = 0;
+ mutex_lock(&codec->user_mutex);
+ snd_array_for_each(list, i, pin) {
+ len += sysfs_emit_at(buf, len, "0x%02x 0x%08x\n",
+ pin->nid, pin->cfg);
+ }
+ mutex_unlock(&codec->user_mutex);
+ return len;
+}
+
+static ssize_t init_pin_configs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hda_codec *codec = dev_get_drvdata(dev);
+ return pin_configs_show(codec, &codec->init_pins, buf);
+}
+
+static ssize_t driver_pin_configs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hda_codec *codec = dev_get_drvdata(dev);
+ return pin_configs_show(codec, &codec->driver_pins, buf);
+}
+
+#ifdef CONFIG_SND_HDA_RECONFIG
+
+/*
+ * sysfs interface
+ */
+
+static int clear_codec(struct hda_codec *codec)
+{
+ int err;
+
+ err = snd_hda_codec_reset(codec);
+ if (err < 0) {
+ codec_err(codec, "The codec is being used, can't free.\n");
+ return err;
+ }
+ snd_hda_sysfs_clear(codec);
+ return 0;
+}
+
+static int reconfig_codec(struct hda_codec *codec)
+{
+ int err;
+
+ snd_hda_power_up(codec);
+ codec_info(codec, "hda-codec: reconfiguring\n");
+ err = snd_hda_codec_reset(codec);
+ if (err < 0) {
+ codec_err(codec,
+ "The codec is being used, can't reconfigure.\n");
+ goto error;
+ }
+ err = device_reprobe(hda_codec_dev(codec));
+ if (err < 0)
+ goto error;
+ err = snd_card_register(codec->card);
+ error:
+ snd_hda_power_down(codec);
+ return err;
+}
+
+/*
+ * allocate a string at most len chars, and remove the trailing EOL
+ */
+static char *kstrndup_noeol(const char *src, size_t len)
+{
+ char *s = kstrndup(src, len, GFP_KERNEL);
+ char *p;
+ if (!s)
+ return NULL;
+ p = strchr(s, '\n');
+ if (p)
+ *p = 0;
+ return s;
+}
+
+#define CODEC_INFO_STORE(type, field) \
+static ssize_t type##_store(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ struct hda_codec *codec = dev_get_drvdata(dev); \
+ unsigned long val; \
+ int err = kstrtoul(buf, 0, &val); \
+ if (err < 0) \
+ return err; \
+ codec->field = val; \
+ return count; \
+}
+
+#define CODEC_INFO_STR_STORE(type, field) \
+static ssize_t type##_store(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ struct hda_codec *codec = dev_get_drvdata(dev); \
+ char *s = kstrndup_noeol(buf, 64); \
+ if (!s) \
+ return -ENOMEM; \
+ kfree(codec->field); \
+ codec->field = s; \
+ return count; \
+}
+
+CODEC_INFO_STORE(vendor_id, core.vendor_id);
+CODEC_INFO_STORE(subsystem_id, core.subsystem_id);
+CODEC_INFO_STORE(revision_id, core.revision_id);
+CODEC_INFO_STR_STORE(vendor_name, core.vendor_name);
+CODEC_INFO_STR_STORE(chip_name, core.chip_name);
+CODEC_INFO_STR_STORE(modelname, modelname);
+
+#define CODEC_ACTION_STORE(type) \
+static ssize_t type##_store(struct device *dev, \
+ struct device_attribute *attr, \
+ const char *buf, size_t count) \
+{ \
+ struct hda_codec *codec = dev_get_drvdata(dev); \
+ int err = 0; \
+ if (*buf) \
+ err = type##_codec(codec); \
+ return err < 0 ? err : count; \
+}
+
+CODEC_ACTION_STORE(reconfig);
+CODEC_ACTION_STORE(clear);
+
+static ssize_t init_verbs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hda_codec *codec = dev_get_drvdata(dev);
+ const struct hda_verb *v;
+ int i, len = 0;
+ mutex_lock(&codec->user_mutex);
+ snd_array_for_each(&codec->init_verbs, i, v) {
+ len += sysfs_emit_at(buf, len, "0x%02x 0x%03x 0x%04x\n",
+ v->nid, v->verb, v->param);
+ }
+ mutex_unlock(&codec->user_mutex);
+ return len;
+}
+
+static int parse_init_verbs(struct hda_codec *codec, const char *buf)
+{
+ struct hda_verb *v;
+ int nid, verb, param;
+
+ if (sscanf(buf, "%i %i %i", &nid, &verb, &param) != 3)
+ return -EINVAL;
+ if (!nid || !verb)
+ return -EINVAL;
+ mutex_lock(&codec->user_mutex);
+ v = snd_array_new(&codec->init_verbs);
+ if (!v) {
+ mutex_unlock(&codec->user_mutex);
+ return -ENOMEM;
+ }
+ v->nid = nid;
+ v->verb = verb;
+ v->param = param;
+ mutex_unlock(&codec->user_mutex);
+ return 0;
+}
+
+static ssize_t init_verbs_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hda_codec *codec = dev_get_drvdata(dev);
+ int err = parse_init_verbs(codec, buf);
+ if (err < 0)
+ return err;
+ return count;
+}
+
+static ssize_t hints_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hda_codec *codec = dev_get_drvdata(dev);
+ const struct hda_hint *hint;
+ int i, len = 0;
+ mutex_lock(&codec->user_mutex);
+ snd_array_for_each(&codec->hints, i, hint) {
+ len += sysfs_emit_at(buf, len, "%s = %s\n",
+ hint->key, hint->val);
+ }
+ mutex_unlock(&codec->user_mutex);
+ return len;
+}
+
+static struct hda_hint *get_hint(struct hda_codec *codec, const char *key)
+{
+ struct hda_hint *hint;
+ int i;
+
+ snd_array_for_each(&codec->hints, i, hint) {
+ if (!strcmp(hint->key, key))
+ return hint;
+ }
+ return NULL;
+}
+
+static void remove_trail_spaces(char *str)
+{
+ char *p;
+ if (!*str)
+ return;
+ p = str + strlen(str) - 1;
+ for (; isspace(*p); p--) {
+ *p = 0;
+ if (p == str)
+ return;
+ }
+}
+
+#define MAX_HINTS 1024
+
+static int parse_hints(struct hda_codec *codec, const char *buf)
+{
+ char *key, *val;
+ struct hda_hint *hint;
+ int err = 0;
+
+ buf = skip_spaces(buf);
+ if (!*buf || *buf == '#' || *buf == '\n')
+ return 0;
+ if (*buf == '=')
+ return -EINVAL;
+ key = kstrndup_noeol(buf, 1024);
+ if (!key)
+ return -ENOMEM;
+ /* extract key and val */
+ val = strchr(key, '=');
+ if (!val) {
+ kfree(key);
+ return -EINVAL;
+ }
+ *val++ = 0;
+ val = skip_spaces(val);
+ remove_trail_spaces(key);
+ remove_trail_spaces(val);
+ mutex_lock(&codec->user_mutex);
+ hint = get_hint(codec, key);
+ if (hint) {
+ /* replace */
+ kfree(hint->key);
+ hint->key = key;
+ hint->val = val;
+ goto unlock;
+ }
+ /* allocate a new hint entry */
+ if (codec->hints.used >= MAX_HINTS)
+ hint = NULL;
+ else
+ hint = snd_array_new(&codec->hints);
+ if (hint) {
+ hint->key = key;
+ hint->val = val;
+ } else {
+ err = -ENOMEM;
+ }
+ unlock:
+ mutex_unlock(&codec->user_mutex);
+ if (err)
+ kfree(key);
+ return err;
+}
+
+static ssize_t hints_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hda_codec *codec = dev_get_drvdata(dev);
+ int err = parse_hints(codec, buf);
+ if (err < 0)
+ return err;
+ return count;
+}
+
+static ssize_t user_pin_configs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct hda_codec *codec = dev_get_drvdata(dev);
+ return pin_configs_show(codec, &codec->user_pins, buf);
+}
+
+static int parse_user_pin_configs(struct hda_codec *codec, const char *buf)
+{
+ int nid, cfg, err;
+
+ if (sscanf(buf, "%i %i", &nid, &cfg) != 2)
+ return -EINVAL;
+ if (!nid)
+ return -EINVAL;
+ mutex_lock(&codec->user_mutex);
+ err = snd_hda_add_pincfg(codec, &codec->user_pins, nid, cfg);
+ mutex_unlock(&codec->user_mutex);
+ return err;
+}
+
+static ssize_t user_pin_configs_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct hda_codec *codec = dev_get_drvdata(dev);
+ int err = parse_user_pin_configs(codec, buf);
+ if (err < 0)
+ return err;
+ return count;
+}
+
+/* sysfs attributes exposed only when CONFIG_SND_HDA_RECONFIG=y */
+static DEVICE_ATTR_RW(init_verbs);
+static DEVICE_ATTR_RW(hints);
+static DEVICE_ATTR_RW(user_pin_configs);
+static DEVICE_ATTR_WO(reconfig);
+static DEVICE_ATTR_WO(clear);
+
+/**
+ * snd_hda_get_hint - Look for hint string
+ * @codec: the HDA codec
+ * @key: the hint key string
+ *
+ * Look for a hint key/value pair matching with the given key string
+ * and returns the value string. If nothing found, returns NULL.
+ */
+const char *snd_hda_get_hint(struct hda_codec *codec, const char *key)
+{
+ struct hda_hint *hint = get_hint(codec, key);
+ return hint ? hint->val : NULL;
+}
+EXPORT_SYMBOL_GPL(snd_hda_get_hint);
+
+/**
+ * snd_hda_get_bool_hint - Get a boolean hint value
+ * @codec: the HDA codec
+ * @key: the hint key string
+ *
+ * Look for a hint key/value pair matching with the given key string
+ * and returns a boolean value parsed from the value. If no matching
+ * key is found, return a negative value.
+ */
+int snd_hda_get_bool_hint(struct hda_codec *codec, const char *key)
+{
+ const char *p;
+ int ret;
+
+ mutex_lock(&codec->user_mutex);
+ p = snd_hda_get_hint(codec, key);
+ if (!p || !*p)
+ ret = -ENOENT;
+ else {
+ switch (toupper(*p)) {
+ case 'T': /* true */
+ case 'Y': /* yes */
+ case '1':
+ ret = 1;
+ break;
+ default:
+ ret = 0;
+ break;
+ }
+ }
+ mutex_unlock(&codec->user_mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_hda_get_bool_hint);
+
+/**
+ * snd_hda_get_int_hint - Get an integer hint value
+ * @codec: the HDA codec
+ * @key: the hint key string
+ * @valp: pointer to store a value
+ *
+ * Look for a hint key/value pair matching with the given key string
+ * and stores the integer value to @valp. If no matching key is found,
+ * return a negative error code. Otherwise it returns zero.
+ */
+int snd_hda_get_int_hint(struct hda_codec *codec, const char *key, int *valp)
+{
+ const char *p;
+ unsigned long val;
+ int ret;
+
+ mutex_lock(&codec->user_mutex);
+ p = snd_hda_get_hint(codec, key);
+ if (!p)
+ ret = -ENOENT;
+ else if (kstrtoul(p, 0, &val))
+ ret = -EINVAL;
+ else {
+ *valp = val;
+ ret = 0;
+ }
+ mutex_unlock(&codec->user_mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(snd_hda_get_int_hint);
+#endif /* CONFIG_SND_HDA_RECONFIG */
+
+/*
+ * common sysfs attributes
+ */
+#ifdef CONFIG_SND_HDA_RECONFIG
+#define RECONFIG_DEVICE_ATTR(name) DEVICE_ATTR_RW(name)
+#else
+#define RECONFIG_DEVICE_ATTR(name) DEVICE_ATTR_RO(name)
+#endif
+static RECONFIG_DEVICE_ATTR(vendor_id);
+static RECONFIG_DEVICE_ATTR(subsystem_id);
+static RECONFIG_DEVICE_ATTR(revision_id);
+static DEVICE_ATTR_RO(afg);
+static DEVICE_ATTR_RO(mfg);
+static RECONFIG_DEVICE_ATTR(vendor_name);
+static RECONFIG_DEVICE_ATTR(chip_name);
+static RECONFIG_DEVICE_ATTR(modelname);
+static DEVICE_ATTR_RO(init_pin_configs);
+static DEVICE_ATTR_RO(driver_pin_configs);
+
+
+#ifdef CONFIG_SND_HDA_PATCH_LOADER
+
+/* parser mode */
+enum {
+ LINE_MODE_NONE,
+ LINE_MODE_CODEC,
+ LINE_MODE_MODEL,
+ LINE_MODE_PINCFG,
+ LINE_MODE_VERB,
+ LINE_MODE_HINT,
+ LINE_MODE_VENDOR_ID,
+ LINE_MODE_SUBSYSTEM_ID,
+ LINE_MODE_REVISION_ID,
+ LINE_MODE_CHIP_NAME,
+ NUM_LINE_MODES,
+};
+
+static inline int strmatch(const char *a, const char *b)
+{
+ return strncasecmp(a, b, strlen(b)) == 0;
+}
+
+/* parse the contents after the line "[codec]"
+ * accept only the line with three numbers, and assign the current codec
+ */
+static void parse_codec_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ int vendorid, subid, caddr;
+ struct hda_codec *codec;
+
+ *codecp = NULL;
+ if (sscanf(buf, "%i %i %i", &vendorid, &subid, &caddr) == 3) {
+ list_for_each_codec(codec, bus) {
+ if ((vendorid <= 0 || codec->core.vendor_id == vendorid) &&
+ (subid <= 0 || codec->core.subsystem_id == subid) &&
+ codec->core.addr == caddr) {
+ *codecp = codec;
+ break;
+ }
+ }
+ }
+}
+
+/* parse the contents after the other command tags, [pincfg], [verb],
+ * [vendor_id], [subsystem_id], [revision_id], [chip_name], [hint] and [model]
+ * just pass to the sysfs helper (only when any codec was specified)
+ */
+static void parse_pincfg_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ parse_user_pin_configs(*codecp, buf);
+}
+
+static void parse_verb_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ parse_init_verbs(*codecp, buf);
+}
+
+static void parse_hint_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ parse_hints(*codecp, buf);
+}
+
+static void parse_model_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ kfree((*codecp)->modelname);
+ (*codecp)->modelname = kstrdup(buf, GFP_KERNEL);
+}
+
+static void parse_chip_name_mode(char *buf, struct hda_bus *bus,
+ struct hda_codec **codecp)
+{
+ snd_hda_codec_set_name(*codecp, buf);
+}
+
+#define DEFINE_PARSE_ID_MODE(name) \
+static void parse_##name##_mode(char *buf, struct hda_bus *bus, \
+ struct hda_codec **codecp) \
+{ \
+ unsigned long val; \
+ if (!kstrtoul(buf, 0, &val)) \
+ (*codecp)->core.name = val; \
+}
+
+DEFINE_PARSE_ID_MODE(vendor_id);
+DEFINE_PARSE_ID_MODE(subsystem_id);
+DEFINE_PARSE_ID_MODE(revision_id);
+
+
+struct hda_patch_item {
+ const char *tag;
+ const char *alias;
+ void (*parser)(char *buf, struct hda_bus *bus, struct hda_codec **retc);
+};
+
+static const struct hda_patch_item patch_items[NUM_LINE_MODES] = {
+ [LINE_MODE_CODEC] = {
+ .tag = "[codec]",
+ .parser = parse_codec_mode,
+ },
+ [LINE_MODE_MODEL] = {
+ .tag = "[model]",
+ .parser = parse_model_mode,
+ },
+ [LINE_MODE_VERB] = {
+ .tag = "[verb]",
+ .alias = "[init_verbs]",
+ .parser = parse_verb_mode,
+ },
+ [LINE_MODE_PINCFG] = {
+ .tag = "[pincfg]",
+ .alias = "[user_pin_configs]",
+ .parser = parse_pincfg_mode,
+ },
+ [LINE_MODE_HINT] = {
+ .tag = "[hint]",
+ .alias = "[hints]",
+ .parser = parse_hint_mode
+ },
+ [LINE_MODE_VENDOR_ID] = {
+ .tag = "[vendor_id]",
+ .parser = parse_vendor_id_mode,
+ },
+ [LINE_MODE_SUBSYSTEM_ID] = {
+ .tag = "[subsystem_id]",
+ .parser = parse_subsystem_id_mode,
+ },
+ [LINE_MODE_REVISION_ID] = {
+ .tag = "[revision_id]",
+ .parser = parse_revision_id_mode,
+ },
+ [LINE_MODE_CHIP_NAME] = {
+ .tag = "[chip_name]",
+ .parser = parse_chip_name_mode,
+ },
+};
+
+/* check the line starting with '[' -- change the parser mode accodingly */
+static int parse_line_mode(char *buf, struct hda_bus *bus)
+{
+ int i;
+ for (i = 0; i < ARRAY_SIZE(patch_items); i++) {
+ if (!patch_items[i].tag)
+ continue;
+ if (strmatch(buf, patch_items[i].tag))
+ return i;
+ if (patch_items[i].alias && strmatch(buf, patch_items[i].alias))
+ return i;
+ }
+ return LINE_MODE_NONE;
+}
+
+/* copy one line from the buffer in fw, and update the fields in fw
+ * return zero if it reaches to the end of the buffer, or non-zero
+ * if successfully copied a line
+ *
+ * the spaces at the beginning and the end of the line are stripped
+ */
+static int get_line_from_fw(char *buf, int size, size_t *fw_size_p,
+ const void **fw_data_p)
+{
+ int len;
+ size_t fw_size = *fw_size_p;
+ const char *p = *fw_data_p;
+
+ while (isspace(*p) && fw_size) {
+ p++;
+ fw_size--;
+ }
+ if (!fw_size)
+ return 0;
+
+ for (len = 0; len < fw_size; len++) {
+ if (!*p)
+ break;
+ if (*p == '\n') {
+ p++;
+ len++;
+ break;
+ }
+ if (len < size)
+ *buf++ = *p++;
+ }
+ *buf = 0;
+ *fw_size_p = fw_size - len;
+ *fw_data_p = p;
+ remove_trail_spaces(buf);
+ return 1;
+}
+
+/**
+ * snd_hda_load_patch - load a "patch" firmware file and parse it
+ * @bus: HD-audio bus
+ * @fw_size: the firmware byte size
+ * @fw_buf: the firmware data
+ */
+int snd_hda_load_patch(struct hda_bus *bus, size_t fw_size, const void *fw_buf)
+{
+ char buf[128];
+ struct hda_codec *codec;
+ int line_mode;
+
+ line_mode = LINE_MODE_NONE;
+ codec = NULL;
+ while (get_line_from_fw(buf, sizeof(buf) - 1, &fw_size, &fw_buf)) {
+ if (!*buf || *buf == '#' || *buf == '\n')
+ continue;
+ if (*buf == '[')
+ line_mode = parse_line_mode(buf, bus);
+ else if (patch_items[line_mode].parser &&
+ (codec || line_mode <= LINE_MODE_CODEC))
+ patch_items[line_mode].parser(buf, bus, &codec);
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_hda_load_patch);
+#endif /* CONFIG_SND_HDA_PATCH_LOADER */
+
+/*
+ * sysfs entries
+ */
+static struct attribute *hda_dev_attrs[] = {
+ &dev_attr_vendor_id.attr,
+ &dev_attr_subsystem_id.attr,
+ &dev_attr_revision_id.attr,
+ &dev_attr_afg.attr,
+ &dev_attr_mfg.attr,
+ &dev_attr_vendor_name.attr,
+ &dev_attr_chip_name.attr,
+ &dev_attr_modelname.attr,
+ &dev_attr_init_pin_configs.attr,
+ &dev_attr_driver_pin_configs.attr,
+#ifdef CONFIG_PM
+ &dev_attr_power_on_acct.attr,
+ &dev_attr_power_off_acct.attr,
+#endif
+#ifdef CONFIG_SND_HDA_RECONFIG
+ &dev_attr_init_verbs.attr,
+ &dev_attr_hints.attr,
+ &dev_attr_user_pin_configs.attr,
+ &dev_attr_reconfig.attr,
+ &dev_attr_clear.attr,
+#endif
+ NULL
+};
+
+static const struct attribute_group hda_dev_attr_group = {
+ .attrs = hda_dev_attrs,
+};
+
+const struct attribute_group *snd_hda_dev_attr_groups[] = {
+ &hda_dev_attr_group,
+ NULL
+};
+
+void snd_hda_sysfs_init(struct hda_codec *codec)
+{
+ mutex_init(&codec->user_mutex);
+#ifdef CONFIG_SND_HDA_RECONFIG
+ snd_array_init(&codec->init_verbs, sizeof(struct hda_verb), 32);
+ snd_array_init(&codec->hints, sizeof(struct hda_hint), 32);
+ snd_array_init(&codec->user_pins, sizeof(struct hda_pincfg), 16);
+#endif
+}
+
+void snd_hda_sysfs_clear(struct hda_codec *codec)
+{
+#ifdef CONFIG_SND_HDA_RECONFIG
+ struct hda_hint *hint;
+ int i;
+
+ /* clear init verbs */
+ snd_array_free(&codec->init_verbs);
+ /* clear hints */
+ snd_array_for_each(&codec->hints, i, hint) {
+ kfree(hint->key); /* we don't need to free hint->val */
+ }
+ snd_array_free(&codec->hints);
+ snd_array_free(&codec->user_pins);
+#endif
+}