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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/aoa/core/gpio-feature.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/aoa/core/gpio-feature.c')
-rw-r--r--sound/aoa/core/gpio-feature.c425
1 files changed, 425 insertions, 0 deletions
diff --git a/sound/aoa/core/gpio-feature.c b/sound/aoa/core/gpio-feature.c
new file mode 100644
index 000000000..39bb409b2
--- /dev/null
+++ b/sound/aoa/core/gpio-feature.c
@@ -0,0 +1,425 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Apple Onboard Audio feature call GPIO control
+ *
+ * Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This file contains the GPIO control routines for
+ * direct (through feature calls) access to the GPIO
+ * registers.
+ */
+
+#include <linux/of_irq.h>
+#include <linux/interrupt.h>
+#include <asm/pmac_feature.h>
+#include "../aoa.h"
+
+/* TODO: these are lots of global variables
+ * that aren't used on most machines...
+ * Move them into a dynamically allocated
+ * structure and use that.
+ */
+
+/* these are the GPIO numbers (register addresses as offsets into
+ * the GPIO space) */
+static int headphone_mute_gpio;
+static int master_mute_gpio;
+static int amp_mute_gpio;
+static int lineout_mute_gpio;
+static int hw_reset_gpio;
+static int lineout_detect_gpio;
+static int headphone_detect_gpio;
+static int linein_detect_gpio;
+
+/* see the SWITCH_GPIO macro */
+static int headphone_mute_gpio_activestate;
+static int master_mute_gpio_activestate;
+static int amp_mute_gpio_activestate;
+static int lineout_mute_gpio_activestate;
+static int hw_reset_gpio_activestate;
+static int lineout_detect_gpio_activestate;
+static int headphone_detect_gpio_activestate;
+static int linein_detect_gpio_activestate;
+
+/* node pointers that we save when getting the GPIO number
+ * to get the interrupt later */
+static struct device_node *lineout_detect_node;
+static struct device_node *linein_detect_node;
+static struct device_node *headphone_detect_node;
+
+static int lineout_detect_irq;
+static int linein_detect_irq;
+static int headphone_detect_irq;
+
+static struct device_node *get_gpio(char *name,
+ char *altname,
+ int *gpioptr,
+ int *gpioactiveptr)
+{
+ struct device_node *np, *gpio;
+ const u32 *reg;
+ const char *audio_gpio;
+
+ *gpioptr = -1;
+
+ /* check if we can get it the easy way ... */
+ np = of_find_node_by_name(NULL, name);
+ if (!np) {
+ /* some machines have only gpioX/extint-gpioX nodes,
+ * and an audio-gpio property saying what it is ...
+ * So what we have to do is enumerate all children
+ * of the gpio node and check them all. */
+ gpio = of_find_node_by_name(NULL, "gpio");
+ if (!gpio)
+ return NULL;
+ while ((np = of_get_next_child(gpio, np))) {
+ audio_gpio = of_get_property(np, "audio-gpio", NULL);
+ if (!audio_gpio)
+ continue;
+ if (strcmp(audio_gpio, name) == 0)
+ break;
+ if (altname && (strcmp(audio_gpio, altname) == 0))
+ break;
+ }
+ of_node_put(gpio);
+ /* still not found, assume not there */
+ if (!np)
+ return NULL;
+ }
+
+ reg = of_get_property(np, "reg", NULL);
+ if (!reg) {
+ of_node_put(np);
+ return NULL;
+ }
+
+ *gpioptr = *reg;
+
+ /* this is a hack, usually the GPIOs 'reg' property
+ * should have the offset based from the GPIO space
+ * which is at 0x50, but apparently not always... */
+ if (*gpioptr < 0x50)
+ *gpioptr += 0x50;
+
+ reg = of_get_property(np, "audio-gpio-active-state", NULL);
+ if (!reg)
+ /* Apple seems to default to 1, but
+ * that doesn't seem right at least on most
+ * machines. So until proven that the opposite
+ * is necessary, we default to 0
+ * (which, incidentally, snd-powermac also does...) */
+ *gpioactiveptr = 0;
+ else
+ *gpioactiveptr = *reg;
+
+ return np;
+}
+
+static void get_irq(struct device_node * np, int *irqptr)
+{
+ if (np)
+ *irqptr = irq_of_parse_and_map(np, 0);
+ else
+ *irqptr = 0;
+}
+
+/* 0x4 is outenable, 0x1 is out, thus 4 or 5 */
+#define SWITCH_GPIO(name, v, on) \
+ (((v)&~1) | ((on)? \
+ (name##_gpio_activestate==0?4:5): \
+ (name##_gpio_activestate==0?5:4)))
+
+#define FTR_GPIO(name, bit) \
+static void ftr_gpio_set_##name(struct gpio_runtime *rt, int on)\
+{ \
+ int v; \
+ \
+ if (unlikely(!rt)) return; \
+ \
+ if (name##_mute_gpio < 0) \
+ return; \
+ \
+ v = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, \
+ name##_mute_gpio, \
+ 0); \
+ \
+ /* muted = !on... */ \
+ v = SWITCH_GPIO(name##_mute, v, !on); \
+ \
+ pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, \
+ name##_mute_gpio, v); \
+ \
+ rt->implementation_private &= ~(1<<bit); \
+ rt->implementation_private |= (!!on << bit); \
+} \
+static int ftr_gpio_get_##name(struct gpio_runtime *rt) \
+{ \
+ if (unlikely(!rt)) return 0; \
+ return (rt->implementation_private>>bit)&1; \
+}
+
+FTR_GPIO(headphone, 0);
+FTR_GPIO(amp, 1);
+FTR_GPIO(lineout, 2);
+FTR_GPIO(master, 3);
+
+static void ftr_gpio_set_hw_reset(struct gpio_runtime *rt, int on)
+{
+ int v;
+
+ if (unlikely(!rt)) return;
+ if (hw_reset_gpio < 0)
+ return;
+
+ v = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL,
+ hw_reset_gpio, 0);
+ v = SWITCH_GPIO(hw_reset, v, on);
+ pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL,
+ hw_reset_gpio, v);
+}
+
+static struct gpio_methods methods;
+
+static void ftr_gpio_all_amps_off(struct gpio_runtime *rt)
+{
+ int saved;
+
+ if (unlikely(!rt)) return;
+ saved = rt->implementation_private;
+ ftr_gpio_set_headphone(rt, 0);
+ ftr_gpio_set_amp(rt, 0);
+ ftr_gpio_set_lineout(rt, 0);
+ if (methods.set_master)
+ ftr_gpio_set_master(rt, 0);
+ rt->implementation_private = saved;
+}
+
+static void ftr_gpio_all_amps_restore(struct gpio_runtime *rt)
+{
+ int s;
+
+ if (unlikely(!rt)) return;
+ s = rt->implementation_private;
+ ftr_gpio_set_headphone(rt, (s>>0)&1);
+ ftr_gpio_set_amp(rt, (s>>1)&1);
+ ftr_gpio_set_lineout(rt, (s>>2)&1);
+ if (methods.set_master)
+ ftr_gpio_set_master(rt, (s>>3)&1);
+}
+
+static void ftr_handle_notify(struct work_struct *work)
+{
+ struct gpio_notification *notif =
+ container_of(work, struct gpio_notification, work.work);
+
+ mutex_lock(&notif->mutex);
+ if (notif->notify)
+ notif->notify(notif->data);
+ mutex_unlock(&notif->mutex);
+}
+
+static void gpio_enable_dual_edge(int gpio)
+{
+ int v;
+
+ if (gpio == -1)
+ return;
+ v = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, gpio, 0);
+ v |= 0x80; /* enable dual edge */
+ pmac_call_feature(PMAC_FTR_WRITE_GPIO, NULL, gpio, v);
+}
+
+static void ftr_gpio_init(struct gpio_runtime *rt)
+{
+ get_gpio("headphone-mute", NULL,
+ &headphone_mute_gpio,
+ &headphone_mute_gpio_activestate);
+ get_gpio("amp-mute", NULL,
+ &amp_mute_gpio,
+ &amp_mute_gpio_activestate);
+ get_gpio("lineout-mute", NULL,
+ &lineout_mute_gpio,
+ &lineout_mute_gpio_activestate);
+ get_gpio("hw-reset", "audio-hw-reset",
+ &hw_reset_gpio,
+ &hw_reset_gpio_activestate);
+ if (get_gpio("master-mute", NULL,
+ &master_mute_gpio,
+ &master_mute_gpio_activestate)) {
+ methods.set_master = ftr_gpio_set_master;
+ methods.get_master = ftr_gpio_get_master;
+ }
+
+ headphone_detect_node = get_gpio("headphone-detect", NULL,
+ &headphone_detect_gpio,
+ &headphone_detect_gpio_activestate);
+ /* go Apple, and thanks for giving these different names
+ * across the board... */
+ lineout_detect_node = get_gpio("lineout-detect", "line-output-detect",
+ &lineout_detect_gpio,
+ &lineout_detect_gpio_activestate);
+ linein_detect_node = get_gpio("linein-detect", "line-input-detect",
+ &linein_detect_gpio,
+ &linein_detect_gpio_activestate);
+
+ gpio_enable_dual_edge(headphone_detect_gpio);
+ gpio_enable_dual_edge(lineout_detect_gpio);
+ gpio_enable_dual_edge(linein_detect_gpio);
+
+ get_irq(headphone_detect_node, &headphone_detect_irq);
+ get_irq(lineout_detect_node, &lineout_detect_irq);
+ get_irq(linein_detect_node, &linein_detect_irq);
+
+ ftr_gpio_all_amps_off(rt);
+ rt->implementation_private = 0;
+ INIT_DELAYED_WORK(&rt->headphone_notify.work, ftr_handle_notify);
+ INIT_DELAYED_WORK(&rt->line_in_notify.work, ftr_handle_notify);
+ INIT_DELAYED_WORK(&rt->line_out_notify.work, ftr_handle_notify);
+ mutex_init(&rt->headphone_notify.mutex);
+ mutex_init(&rt->line_in_notify.mutex);
+ mutex_init(&rt->line_out_notify.mutex);
+}
+
+static void ftr_gpio_exit(struct gpio_runtime *rt)
+{
+ ftr_gpio_all_amps_off(rt);
+ rt->implementation_private = 0;
+ if (rt->headphone_notify.notify)
+ free_irq(headphone_detect_irq, &rt->headphone_notify);
+ if (rt->line_in_notify.gpio_private)
+ free_irq(linein_detect_irq, &rt->line_in_notify);
+ if (rt->line_out_notify.gpio_private)
+ free_irq(lineout_detect_irq, &rt->line_out_notify);
+ cancel_delayed_work_sync(&rt->headphone_notify.work);
+ cancel_delayed_work_sync(&rt->line_in_notify.work);
+ cancel_delayed_work_sync(&rt->line_out_notify.work);
+ mutex_destroy(&rt->headphone_notify.mutex);
+ mutex_destroy(&rt->line_in_notify.mutex);
+ mutex_destroy(&rt->line_out_notify.mutex);
+}
+
+static irqreturn_t ftr_handle_notify_irq(int xx, void *data)
+{
+ struct gpio_notification *notif = data;
+
+ schedule_delayed_work(&notif->work, 0);
+
+ return IRQ_HANDLED;
+}
+
+static int ftr_set_notify(struct gpio_runtime *rt,
+ enum notify_type type,
+ notify_func_t notify,
+ void *data)
+{
+ struct gpio_notification *notif;
+ notify_func_t old;
+ int irq;
+ char *name;
+ int err = -EBUSY;
+
+ switch (type) {
+ case AOA_NOTIFY_HEADPHONE:
+ notif = &rt->headphone_notify;
+ name = "headphone-detect";
+ irq = headphone_detect_irq;
+ break;
+ case AOA_NOTIFY_LINE_IN:
+ notif = &rt->line_in_notify;
+ name = "linein-detect";
+ irq = linein_detect_irq;
+ break;
+ case AOA_NOTIFY_LINE_OUT:
+ notif = &rt->line_out_notify;
+ name = "lineout-detect";
+ irq = lineout_detect_irq;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (!irq)
+ return -ENODEV;
+
+ mutex_lock(&notif->mutex);
+
+ old = notif->notify;
+
+ if (!old && !notify) {
+ err = 0;
+ goto out_unlock;
+ }
+
+ if (old && notify) {
+ if (old == notify && notif->data == data)
+ err = 0;
+ goto out_unlock;
+ }
+
+ if (old && !notify)
+ free_irq(irq, notif);
+
+ if (!old && notify) {
+ err = request_irq(irq, ftr_handle_notify_irq, 0, name, notif);
+ if (err)
+ goto out_unlock;
+ }
+
+ notif->notify = notify;
+ notif->data = data;
+
+ err = 0;
+ out_unlock:
+ mutex_unlock(&notif->mutex);
+ return err;
+}
+
+static int ftr_get_detect(struct gpio_runtime *rt,
+ enum notify_type type)
+{
+ int gpio, ret, active;
+
+ switch (type) {
+ case AOA_NOTIFY_HEADPHONE:
+ gpio = headphone_detect_gpio;
+ active = headphone_detect_gpio_activestate;
+ break;
+ case AOA_NOTIFY_LINE_IN:
+ gpio = linein_detect_gpio;
+ active = linein_detect_gpio_activestate;
+ break;
+ case AOA_NOTIFY_LINE_OUT:
+ gpio = lineout_detect_gpio;
+ active = lineout_detect_gpio_activestate;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (gpio == -1)
+ return -ENODEV;
+
+ ret = pmac_call_feature(PMAC_FTR_READ_GPIO, NULL, gpio, 0);
+ if (ret < 0)
+ return ret;
+ return ((ret >> 1) & 1) == active;
+}
+
+static struct gpio_methods methods = {
+ .init = ftr_gpio_init,
+ .exit = ftr_gpio_exit,
+ .all_amps_off = ftr_gpio_all_amps_off,
+ .all_amps_restore = ftr_gpio_all_amps_restore,
+ .set_headphone = ftr_gpio_set_headphone,
+ .set_speakers = ftr_gpio_set_amp,
+ .set_lineout = ftr_gpio_set_lineout,
+ .set_hw_reset = ftr_gpio_set_hw_reset,
+ .get_headphone = ftr_gpio_get_headphone,
+ .get_speakers = ftr_gpio_get_amp,
+ .get_lineout = ftr_gpio_get_lineout,
+ .set_notify = ftr_set_notify,
+ .get_detect = ftr_get_detect,
+};
+
+struct gpio_methods *ftr_gpio_methods = &methods;
+EXPORT_SYMBOL_GPL(ftr_gpio_methods);