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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 /drivers/leds/leds-pca963x.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 'drivers/leds/leds-pca963x.c')
-rw-r--r--drivers/leds/leds-pca963x.c442
1 files changed, 442 insertions, 0 deletions
diff --git a/drivers/leds/leds-pca963x.c b/drivers/leds/leds-pca963x.c
new file mode 100644
index 000000000..a7e052c1d
--- /dev/null
+++ b/drivers/leds/leds-pca963x.c
@@ -0,0 +1,442 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2011 bct electronic GmbH
+ * Copyright 2013 Qtechnology/AS
+ *
+ * Author: Peter Meerwald <p.meerwald@bct-electronic.com>
+ * Author: Ricardo Ribalda <ribalda@kernel.org>
+ *
+ * Based on leds-pca955x.c
+ *
+ * LED driver for the PCA9633 I2C LED driver (7-bit slave address 0x62)
+ * LED driver for the PCA9634/5 I2C LED driver (7-bit slave address set by hw.)
+ *
+ * Note that hardware blinking violates the leds infrastructure driver
+ * interface since the hardware only supports blinking all LEDs with the
+ * same delay_on/delay_off rates. That is, only the LEDs that are set to
+ * blink will actually blink but all LEDs that are set to blink will blink
+ * in identical fashion. The delay_on/delay_off values of the last LED
+ * that is set to blink will be used for all of the blinking LEDs.
+ * Hardware blinking is disabled by default but can be enabled by setting
+ * the 'blink_type' member in the platform_data struct to 'PCA963X_HW_BLINK'
+ * or by adding the 'nxp,hw-blink' property to the DTS.
+ */
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/property.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+
+/* LED select registers determine the source that drives LED outputs */
+#define PCA963X_LED_OFF 0x0 /* LED driver off */
+#define PCA963X_LED_ON 0x1 /* LED driver on */
+#define PCA963X_LED_PWM 0x2 /* Controlled through PWM */
+#define PCA963X_LED_GRP_PWM 0x3 /* Controlled through PWM/GRPPWM */
+
+#define PCA963X_MODE2_OUTDRV 0x04 /* Open-drain or totem pole */
+#define PCA963X_MODE2_INVRT 0x10 /* Normal or inverted direction */
+#define PCA963X_MODE2_DMBLNK 0x20 /* Enable blinking */
+
+#define PCA963X_MODE1 0x00
+#define PCA963X_MODE2 0x01
+#define PCA963X_PWM_BASE 0x02
+
+enum pca963x_type {
+ pca9633,
+ pca9634,
+ pca9635,
+};
+
+struct pca963x_chipdef {
+ u8 grppwm;
+ u8 grpfreq;
+ u8 ledout_base;
+ int n_leds;
+ unsigned int scaling;
+};
+
+static struct pca963x_chipdef pca963x_chipdefs[] = {
+ [pca9633] = {
+ .grppwm = 0x6,
+ .grpfreq = 0x7,
+ .ledout_base = 0x8,
+ .n_leds = 4,
+ },
+ [pca9634] = {
+ .grppwm = 0xa,
+ .grpfreq = 0xb,
+ .ledout_base = 0xc,
+ .n_leds = 8,
+ },
+ [pca9635] = {
+ .grppwm = 0x12,
+ .grpfreq = 0x13,
+ .ledout_base = 0x14,
+ .n_leds = 16,
+ },
+};
+
+/* Total blink period in milliseconds */
+#define PCA963X_BLINK_PERIOD_MIN 42
+#define PCA963X_BLINK_PERIOD_MAX 10667
+
+static const struct i2c_device_id pca963x_id[] = {
+ { "pca9632", pca9633 },
+ { "pca9633", pca9633 },
+ { "pca9634", pca9634 },
+ { "pca9635", pca9635 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, pca963x_id);
+
+struct pca963x;
+
+struct pca963x_led {
+ struct pca963x *chip;
+ struct led_classdev led_cdev;
+ int led_num; /* 0 .. 15 potentially */
+ bool blinking;
+ u8 gdc;
+ u8 gfrq;
+};
+
+struct pca963x {
+ struct pca963x_chipdef *chipdef;
+ struct mutex mutex;
+ struct i2c_client *client;
+ unsigned long leds_on;
+ struct pca963x_led leds[];
+};
+
+static int pca963x_brightness(struct pca963x_led *led,
+ enum led_brightness brightness)
+{
+ struct i2c_client *client = led->chip->client;
+ struct pca963x_chipdef *chipdef = led->chip->chipdef;
+ u8 ledout_addr, ledout, mask, val;
+ int shift;
+ int ret;
+
+ ledout_addr = chipdef->ledout_base + (led->led_num / 4);
+ shift = 2 * (led->led_num % 4);
+ mask = 0x3 << shift;
+ ledout = i2c_smbus_read_byte_data(client, ledout_addr);
+
+ switch (brightness) {
+ case LED_FULL:
+ if (led->blinking) {
+ val = (ledout & ~mask) | (PCA963X_LED_GRP_PWM << shift);
+ ret = i2c_smbus_write_byte_data(client,
+ PCA963X_PWM_BASE +
+ led->led_num,
+ LED_FULL);
+ } else {
+ val = (ledout & ~mask) | (PCA963X_LED_ON << shift);
+ }
+ ret = i2c_smbus_write_byte_data(client, ledout_addr, val);
+ break;
+ case LED_OFF:
+ val = ledout & ~mask;
+ ret = i2c_smbus_write_byte_data(client, ledout_addr, val);
+ led->blinking = false;
+ break;
+ default:
+ ret = i2c_smbus_write_byte_data(client,
+ PCA963X_PWM_BASE +
+ led->led_num,
+ brightness);
+ if (ret < 0)
+ return ret;
+
+ if (led->blinking)
+ val = (ledout & ~mask) | (PCA963X_LED_GRP_PWM << shift);
+ else
+ val = (ledout & ~mask) | (PCA963X_LED_PWM << shift);
+
+ ret = i2c_smbus_write_byte_data(client, ledout_addr, val);
+ break;
+ }
+
+ return ret;
+}
+
+static void pca963x_blink(struct pca963x_led *led)
+{
+ struct i2c_client *client = led->chip->client;
+ struct pca963x_chipdef *chipdef = led->chip->chipdef;
+ u8 ledout_addr, ledout, mask, val, mode2;
+ int shift;
+
+ ledout_addr = chipdef->ledout_base + (led->led_num / 4);
+ shift = 2 * (led->led_num % 4);
+ mask = 0x3 << shift;
+ mode2 = i2c_smbus_read_byte_data(client, PCA963X_MODE2);
+
+ i2c_smbus_write_byte_data(client, chipdef->grppwm, led->gdc);
+
+ i2c_smbus_write_byte_data(client, chipdef->grpfreq, led->gfrq);
+
+ if (!(mode2 & PCA963X_MODE2_DMBLNK))
+ i2c_smbus_write_byte_data(client, PCA963X_MODE2,
+ mode2 | PCA963X_MODE2_DMBLNK);
+
+ mutex_lock(&led->chip->mutex);
+
+ ledout = i2c_smbus_read_byte_data(client, ledout_addr);
+ if ((ledout & mask) != (PCA963X_LED_GRP_PWM << shift)) {
+ val = (ledout & ~mask) | (PCA963X_LED_GRP_PWM << shift);
+ i2c_smbus_write_byte_data(client, ledout_addr, val);
+ }
+
+ mutex_unlock(&led->chip->mutex);
+ led->blinking = true;
+}
+
+static int pca963x_power_state(struct pca963x_led *led)
+{
+ struct i2c_client *client = led->chip->client;
+ unsigned long *leds_on = &led->chip->leds_on;
+ unsigned long cached_leds = *leds_on;
+
+ if (led->led_cdev.brightness)
+ set_bit(led->led_num, leds_on);
+ else
+ clear_bit(led->led_num, leds_on);
+
+ if (!(*leds_on) != !cached_leds)
+ return i2c_smbus_write_byte_data(client, PCA963X_MODE1,
+ *leds_on ? 0 : BIT(4));
+
+ return 0;
+}
+
+static int pca963x_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ struct pca963x_led *led;
+ int ret;
+
+ led = container_of(led_cdev, struct pca963x_led, led_cdev);
+
+ mutex_lock(&led->chip->mutex);
+
+ ret = pca963x_brightness(led, value);
+ if (ret < 0)
+ goto unlock;
+ ret = pca963x_power_state(led);
+
+unlock:
+ mutex_unlock(&led->chip->mutex);
+ return ret;
+}
+
+static unsigned int pca963x_period_scale(struct pca963x_led *led,
+ unsigned int val)
+{
+ unsigned int scaling = led->chip->chipdef->scaling;
+
+ return scaling ? DIV_ROUND_CLOSEST(val * scaling, 1000) : val;
+}
+
+static int pca963x_blink_set(struct led_classdev *led_cdev,
+ unsigned long *delay_on, unsigned long *delay_off)
+{
+ unsigned long time_on, time_off, period;
+ struct pca963x_led *led;
+ u8 gdc, gfrq;
+
+ led = container_of(led_cdev, struct pca963x_led, led_cdev);
+
+ time_on = *delay_on;
+ time_off = *delay_off;
+
+ /* If both zero, pick reasonable defaults of 500ms each */
+ if (!time_on && !time_off) {
+ time_on = 500;
+ time_off = 500;
+ }
+
+ period = pca963x_period_scale(led, time_on + time_off);
+
+ /* If period not supported by hardware, default to someting sane. */
+ if ((period < PCA963X_BLINK_PERIOD_MIN) ||
+ (period > PCA963X_BLINK_PERIOD_MAX)) {
+ time_on = 500;
+ time_off = 500;
+ period = pca963x_period_scale(led, 1000);
+ }
+
+ /*
+ * From manual: duty cycle = (GDC / 256) ->
+ * (time_on / period) = (GDC / 256) ->
+ * GDC = ((time_on * 256) / period)
+ */
+ gdc = (pca963x_period_scale(led, time_on) * 256) / period;
+
+ /*
+ * From manual: period = ((GFRQ + 1) / 24) in seconds.
+ * So, period (in ms) = (((GFRQ + 1) / 24) * 1000) ->
+ * GFRQ = ((period * 24 / 1000) - 1)
+ */
+ gfrq = (period * 24 / 1000) - 1;
+
+ led->gdc = gdc;
+ led->gfrq = gfrq;
+
+ pca963x_blink(led);
+ led->led_cdev.brightness = LED_FULL;
+ pca963x_led_set(led_cdev, LED_FULL);
+
+ *delay_on = time_on;
+ *delay_off = time_off;
+
+ return 0;
+}
+
+static int pca963x_register_leds(struct i2c_client *client,
+ struct pca963x *chip)
+{
+ struct pca963x_chipdef *chipdef = chip->chipdef;
+ struct pca963x_led *led = chip->leds;
+ struct device *dev = &client->dev;
+ struct fwnode_handle *child;
+ bool hw_blink;
+ s32 mode2;
+ u32 reg;
+ int ret;
+
+ if (device_property_read_u32(dev, "nxp,period-scale",
+ &chipdef->scaling))
+ chipdef->scaling = 1000;
+
+ hw_blink = device_property_read_bool(dev, "nxp,hw-blink");
+
+ mode2 = i2c_smbus_read_byte_data(client, PCA963X_MODE2);
+ if (mode2 < 0)
+ return mode2;
+
+ /* default to open-drain unless totem pole (push-pull) is specified */
+ if (device_property_read_bool(dev, "nxp,totem-pole"))
+ mode2 |= PCA963X_MODE2_OUTDRV;
+ else
+ mode2 &= ~PCA963X_MODE2_OUTDRV;
+
+ /* default to non-inverted output, unless inverted is specified */
+ if (device_property_read_bool(dev, "nxp,inverted-out"))
+ mode2 |= PCA963X_MODE2_INVRT;
+ else
+ mode2 &= ~PCA963X_MODE2_INVRT;
+
+ ret = i2c_smbus_write_byte_data(client, PCA963X_MODE2, mode2);
+ if (ret < 0)
+ return ret;
+
+ device_for_each_child_node(dev, child) {
+ struct led_init_data init_data = {};
+ char default_label[32];
+
+ ret = fwnode_property_read_u32(child, "reg", &reg);
+ if (ret || reg >= chipdef->n_leds) {
+ dev_err(dev, "Invalid 'reg' property for node %pfw\n",
+ child);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ led->led_num = reg;
+ led->chip = chip;
+ led->led_cdev.brightness_set_blocking = pca963x_led_set;
+ if (hw_blink)
+ led->led_cdev.blink_set = pca963x_blink_set;
+ led->blinking = false;
+
+ init_data.fwnode = child;
+ /* for backwards compatibility */
+ init_data.devicename = "pca963x";
+ snprintf(default_label, sizeof(default_label), "%d:%.2x:%u",
+ client->adapter->nr, client->addr, reg);
+ init_data.default_label = default_label;
+
+ ret = devm_led_classdev_register_ext(dev, &led->led_cdev,
+ &init_data);
+ if (ret) {
+ dev_err(dev, "Failed to register LED for node %pfw\n",
+ child);
+ goto err;
+ }
+
+ ++led;
+ }
+
+ return 0;
+err:
+ fwnode_handle_put(child);
+ return ret;
+}
+
+static const struct of_device_id of_pca963x_match[] = {
+ { .compatible = "nxp,pca9632", },
+ { .compatible = "nxp,pca9633", },
+ { .compatible = "nxp,pca9634", },
+ { .compatible = "nxp,pca9635", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, of_pca963x_match);
+
+static int pca963x_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct pca963x_chipdef *chipdef;
+ struct pca963x *chip;
+ int i, count;
+
+ chipdef = &pca963x_chipdefs[id->driver_data];
+
+ count = device_get_child_node_count(dev);
+ if (!count || count > chipdef->n_leds) {
+ dev_err(dev, "Node %pfw must define between 1 and %d LEDs\n",
+ dev_fwnode(dev), chipdef->n_leds);
+ return -EINVAL;
+ }
+
+ chip = devm_kzalloc(dev, struct_size(chip, leds, count), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, chip);
+
+ mutex_init(&chip->mutex);
+ chip->chipdef = chipdef;
+ chip->client = client;
+
+ /* Turn off LEDs by default*/
+ for (i = 0; i < chipdef->n_leds / 4; i++)
+ i2c_smbus_write_byte_data(client, chipdef->ledout_base + i, 0x00);
+
+ /* Disable LED all-call address, and power down initially */
+ i2c_smbus_write_byte_data(client, PCA963X_MODE1, BIT(4));
+
+ return pca963x_register_leds(client, chip);
+}
+
+static struct i2c_driver pca963x_driver = {
+ .driver = {
+ .name = "leds-pca963x",
+ .of_match_table = of_pca963x_match,
+ },
+ .probe = pca963x_probe,
+ .id_table = pca963x_id,
+};
+
+module_i2c_driver(pca963x_driver);
+
+MODULE_AUTHOR("Peter Meerwald <p.meerwald@bct-electronic.com>");
+MODULE_DESCRIPTION("PCA963X LED driver");
+MODULE_LICENSE("GPL v2");