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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-lp8860.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-lp8860.c')
-rw-r--r--drivers/leds/leds-lp8860.c491
1 files changed, 491 insertions, 0 deletions
diff --git a/drivers/leds/leds-lp8860.c b/drivers/leds/leds-lp8860.c
new file mode 100644
index 000000000..e2b36d318
--- /dev/null
+++ b/drivers/leds/leds-lp8860.c
@@ -0,0 +1,491 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * TI LP8860 4-Channel LED Driver
+ *
+ * Copyright (C) 2014 Texas Instruments
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ */
+
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/leds.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/gpio/consumer.h>
+#include <linux/slab.h>
+
+#define LP8860_DISP_CL1_BRT_MSB 0x00
+#define LP8860_DISP_CL1_BRT_LSB 0x01
+#define LP8860_DISP_CL1_CURR_MSB 0x02
+#define LP8860_DISP_CL1_CURR_LSB 0x03
+#define LP8860_CL2_BRT_MSB 0x04
+#define LP8860_CL2_BRT_LSB 0x05
+#define LP8860_CL2_CURRENT 0x06
+#define LP8860_CL3_BRT_MSB 0x07
+#define LP8860_CL3_BRT_LSB 0x08
+#define LP8860_CL3_CURRENT 0x09
+#define LP8860_CL4_BRT_MSB 0x0a
+#define LP8860_CL4_BRT_LSB 0x0b
+#define LP8860_CL4_CURRENT 0x0c
+#define LP8860_CONFIG 0x0d
+#define LP8860_STATUS 0x0e
+#define LP8860_FAULT 0x0f
+#define LP8860_LED_FAULT 0x10
+#define LP8860_FAULT_CLEAR 0x11
+#define LP8860_ID 0x12
+#define LP8860_TEMP_MSB 0x13
+#define LP8860_TEMP_LSB 0x14
+#define LP8860_DISP_LED_CURR_MSB 0x15
+#define LP8860_DISP_LED_CURR_LSB 0x16
+#define LP8860_DISP_LED_PWM_MSB 0x17
+#define LP8860_DISP_LED_PWM_LSB 0x18
+#define LP8860_EEPROM_CNTRL 0x19
+#define LP8860_EEPROM_UNLOCK 0x1a
+
+#define LP8860_EEPROM_REG_0 0x60
+#define LP8860_EEPROM_REG_1 0x61
+#define LP8860_EEPROM_REG_2 0x62
+#define LP8860_EEPROM_REG_3 0x63
+#define LP8860_EEPROM_REG_4 0x64
+#define LP8860_EEPROM_REG_5 0x65
+#define LP8860_EEPROM_REG_6 0x66
+#define LP8860_EEPROM_REG_7 0x67
+#define LP8860_EEPROM_REG_8 0x68
+#define LP8860_EEPROM_REG_9 0x69
+#define LP8860_EEPROM_REG_10 0x6a
+#define LP8860_EEPROM_REG_11 0x6b
+#define LP8860_EEPROM_REG_12 0x6c
+#define LP8860_EEPROM_REG_13 0x6d
+#define LP8860_EEPROM_REG_14 0x6e
+#define LP8860_EEPROM_REG_15 0x6f
+#define LP8860_EEPROM_REG_16 0x70
+#define LP8860_EEPROM_REG_17 0x71
+#define LP8860_EEPROM_REG_18 0x72
+#define LP8860_EEPROM_REG_19 0x73
+#define LP8860_EEPROM_REG_20 0x74
+#define LP8860_EEPROM_REG_21 0x75
+#define LP8860_EEPROM_REG_22 0x76
+#define LP8860_EEPROM_REG_23 0x77
+#define LP8860_EEPROM_REG_24 0x78
+
+#define LP8860_LOCK_EEPROM 0x00
+#define LP8860_UNLOCK_EEPROM 0x01
+#define LP8860_PROGRAM_EEPROM 0x02
+#define LP8860_EEPROM_CODE_1 0x08
+#define LP8860_EEPROM_CODE_2 0xba
+#define LP8860_EEPROM_CODE_3 0xef
+
+#define LP8860_CLEAR_FAULTS 0x01
+
+#define LP8860_NAME "lp8860"
+
+/**
+ * struct lp8860_led
+ * @lock: Lock for reading/writing the device
+ * @client: Pointer to the I2C client
+ * @led_dev: led class device pointer
+ * @regmap: Devices register map
+ * @eeprom_regmap: EEPROM register map
+ * @enable_gpio: VDDIO/EN gpio to enable communication interface
+ * @regulator: LED supply regulator pointer
+ */
+struct lp8860_led {
+ struct mutex lock;
+ struct i2c_client *client;
+ struct led_classdev led_dev;
+ struct regmap *regmap;
+ struct regmap *eeprom_regmap;
+ struct gpio_desc *enable_gpio;
+ struct regulator *regulator;
+};
+
+struct lp8860_eeprom_reg {
+ uint8_t reg;
+ uint8_t value;
+};
+
+static struct lp8860_eeprom_reg lp8860_eeprom_disp_regs[] = {
+ { LP8860_EEPROM_REG_0, 0xed },
+ { LP8860_EEPROM_REG_1, 0xdf },
+ { LP8860_EEPROM_REG_2, 0xdc },
+ { LP8860_EEPROM_REG_3, 0xf0 },
+ { LP8860_EEPROM_REG_4, 0xdf },
+ { LP8860_EEPROM_REG_5, 0xe5 },
+ { LP8860_EEPROM_REG_6, 0xf2 },
+ { LP8860_EEPROM_REG_7, 0x77 },
+ { LP8860_EEPROM_REG_8, 0x77 },
+ { LP8860_EEPROM_REG_9, 0x71 },
+ { LP8860_EEPROM_REG_10, 0x3f },
+ { LP8860_EEPROM_REG_11, 0xb7 },
+ { LP8860_EEPROM_REG_12, 0x17 },
+ { LP8860_EEPROM_REG_13, 0xef },
+ { LP8860_EEPROM_REG_14, 0xb0 },
+ { LP8860_EEPROM_REG_15, 0x87 },
+ { LP8860_EEPROM_REG_16, 0xce },
+ { LP8860_EEPROM_REG_17, 0x72 },
+ { LP8860_EEPROM_REG_18, 0xe5 },
+ { LP8860_EEPROM_REG_19, 0xdf },
+ { LP8860_EEPROM_REG_20, 0x35 },
+ { LP8860_EEPROM_REG_21, 0x06 },
+ { LP8860_EEPROM_REG_22, 0xdc },
+ { LP8860_EEPROM_REG_23, 0x88 },
+ { LP8860_EEPROM_REG_24, 0x3E },
+};
+
+static int lp8860_unlock_eeprom(struct lp8860_led *led, int lock)
+{
+ int ret;
+
+ mutex_lock(&led->lock);
+
+ if (lock == LP8860_UNLOCK_EEPROM) {
+ ret = regmap_write(led->regmap,
+ LP8860_EEPROM_UNLOCK,
+ LP8860_EEPROM_CODE_1);
+ if (ret) {
+ dev_err(&led->client->dev, "EEPROM Unlock failed\n");
+ goto out;
+ }
+
+ ret = regmap_write(led->regmap,
+ LP8860_EEPROM_UNLOCK,
+ LP8860_EEPROM_CODE_2);
+ if (ret) {
+ dev_err(&led->client->dev, "EEPROM Unlock failed\n");
+ goto out;
+ }
+ ret = regmap_write(led->regmap,
+ LP8860_EEPROM_UNLOCK,
+ LP8860_EEPROM_CODE_3);
+ if (ret) {
+ dev_err(&led->client->dev, "EEPROM Unlock failed\n");
+ goto out;
+ }
+ } else {
+ ret = regmap_write(led->regmap,
+ LP8860_EEPROM_UNLOCK,
+ LP8860_LOCK_EEPROM);
+ }
+
+out:
+ mutex_unlock(&led->lock);
+ return ret;
+}
+
+static int lp8860_fault_check(struct lp8860_led *led)
+{
+ int ret, fault;
+ unsigned int read_buf;
+
+ ret = regmap_read(led->regmap, LP8860_LED_FAULT, &read_buf);
+ if (ret)
+ goto out;
+
+ fault = read_buf;
+
+ ret = regmap_read(led->regmap, LP8860_FAULT, &read_buf);
+ if (ret)
+ goto out;
+
+ fault |= read_buf;
+
+ /* Attempt to clear any faults */
+ if (fault)
+ ret = regmap_write(led->regmap, LP8860_FAULT_CLEAR,
+ LP8860_CLEAR_FAULTS);
+out:
+ return ret;
+}
+
+static int lp8860_brightness_set(struct led_classdev *led_cdev,
+ enum led_brightness brt_val)
+{
+ struct lp8860_led *led =
+ container_of(led_cdev, struct lp8860_led, led_dev);
+ int disp_brightness = brt_val * 255;
+ int ret;
+
+ mutex_lock(&led->lock);
+
+ ret = lp8860_fault_check(led);
+ if (ret) {
+ dev_err(&led->client->dev, "Cannot read/clear faults\n");
+ goto out;
+ }
+
+ ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_MSB,
+ (disp_brightness & 0xff00) >> 8);
+ if (ret) {
+ dev_err(&led->client->dev, "Cannot write CL1 MSB\n");
+ goto out;
+ }
+
+ ret = regmap_write(led->regmap, LP8860_DISP_CL1_BRT_LSB,
+ disp_brightness & 0xff);
+ if (ret) {
+ dev_err(&led->client->dev, "Cannot write CL1 LSB\n");
+ goto out;
+ }
+out:
+ mutex_unlock(&led->lock);
+ return ret;
+}
+
+static int lp8860_init(struct lp8860_led *led)
+{
+ unsigned int read_buf;
+ int ret, i, reg_count;
+
+ if (led->regulator) {
+ ret = regulator_enable(led->regulator);
+ if (ret) {
+ dev_err(&led->client->dev,
+ "Failed to enable regulator\n");
+ return ret;
+ }
+ }
+
+ if (led->enable_gpio)
+ gpiod_direction_output(led->enable_gpio, 1);
+
+ ret = lp8860_fault_check(led);
+ if (ret)
+ goto out;
+
+ ret = regmap_read(led->regmap, LP8860_STATUS, &read_buf);
+ if (ret)
+ goto out;
+
+ ret = lp8860_unlock_eeprom(led, LP8860_UNLOCK_EEPROM);
+ if (ret) {
+ dev_err(&led->client->dev, "Failed unlocking EEPROM\n");
+ goto out;
+ }
+
+ reg_count = ARRAY_SIZE(lp8860_eeprom_disp_regs) / sizeof(lp8860_eeprom_disp_regs[0]);
+ for (i = 0; i < reg_count; i++) {
+ ret = regmap_write(led->eeprom_regmap,
+ lp8860_eeprom_disp_regs[i].reg,
+ lp8860_eeprom_disp_regs[i].value);
+ if (ret) {
+ dev_err(&led->client->dev, "Failed writing EEPROM\n");
+ goto out;
+ }
+ }
+
+ ret = lp8860_unlock_eeprom(led, LP8860_LOCK_EEPROM);
+ if (ret)
+ goto out;
+
+ ret = regmap_write(led->regmap,
+ LP8860_EEPROM_CNTRL,
+ LP8860_PROGRAM_EEPROM);
+ if (ret) {
+ dev_err(&led->client->dev, "Failed programming EEPROM\n");
+ goto out;
+ }
+
+ return ret;
+
+out:
+ if (ret)
+ if (led->enable_gpio)
+ gpiod_direction_output(led->enable_gpio, 0);
+
+ if (led->regulator) {
+ ret = regulator_disable(led->regulator);
+ if (ret)
+ dev_err(&led->client->dev,
+ "Failed to disable regulator\n");
+ }
+
+ return ret;
+}
+
+static const struct reg_default lp8860_reg_defs[] = {
+ { LP8860_DISP_CL1_BRT_MSB, 0x00},
+ { LP8860_DISP_CL1_BRT_LSB, 0x00},
+ { LP8860_DISP_CL1_CURR_MSB, 0x00},
+ { LP8860_DISP_CL1_CURR_LSB, 0x00},
+ { LP8860_CL2_BRT_MSB, 0x00},
+ { LP8860_CL2_BRT_LSB, 0x00},
+ { LP8860_CL2_CURRENT, 0x00},
+ { LP8860_CL3_BRT_MSB, 0x00},
+ { LP8860_CL3_BRT_LSB, 0x00},
+ { LP8860_CL3_CURRENT, 0x00},
+ { LP8860_CL4_BRT_MSB, 0x00},
+ { LP8860_CL4_BRT_LSB, 0x00},
+ { LP8860_CL4_CURRENT, 0x00},
+ { LP8860_CONFIG, 0x00},
+ { LP8860_FAULT_CLEAR, 0x00},
+ { LP8860_EEPROM_CNTRL, 0x80},
+ { LP8860_EEPROM_UNLOCK, 0x00},
+};
+
+static const struct regmap_config lp8860_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = LP8860_EEPROM_UNLOCK,
+ .reg_defaults = lp8860_reg_defs,
+ .num_reg_defaults = ARRAY_SIZE(lp8860_reg_defs),
+ .cache_type = REGCACHE_NONE,
+};
+
+static const struct reg_default lp8860_eeprom_defs[] = {
+ { LP8860_EEPROM_REG_0, 0x00 },
+ { LP8860_EEPROM_REG_1, 0x00 },
+ { LP8860_EEPROM_REG_2, 0x00 },
+ { LP8860_EEPROM_REG_3, 0x00 },
+ { LP8860_EEPROM_REG_4, 0x00 },
+ { LP8860_EEPROM_REG_5, 0x00 },
+ { LP8860_EEPROM_REG_6, 0x00 },
+ { LP8860_EEPROM_REG_7, 0x00 },
+ { LP8860_EEPROM_REG_8, 0x00 },
+ { LP8860_EEPROM_REG_9, 0x00 },
+ { LP8860_EEPROM_REG_10, 0x00 },
+ { LP8860_EEPROM_REG_11, 0x00 },
+ { LP8860_EEPROM_REG_12, 0x00 },
+ { LP8860_EEPROM_REG_13, 0x00 },
+ { LP8860_EEPROM_REG_14, 0x00 },
+ { LP8860_EEPROM_REG_15, 0x00 },
+ { LP8860_EEPROM_REG_16, 0x00 },
+ { LP8860_EEPROM_REG_17, 0x00 },
+ { LP8860_EEPROM_REG_18, 0x00 },
+ { LP8860_EEPROM_REG_19, 0x00 },
+ { LP8860_EEPROM_REG_20, 0x00 },
+ { LP8860_EEPROM_REG_21, 0x00 },
+ { LP8860_EEPROM_REG_22, 0x00 },
+ { LP8860_EEPROM_REG_23, 0x00 },
+ { LP8860_EEPROM_REG_24, 0x00 },
+};
+
+static const struct regmap_config lp8860_eeprom_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = LP8860_EEPROM_REG_24,
+ .reg_defaults = lp8860_eeprom_defs,
+ .num_reg_defaults = ARRAY_SIZE(lp8860_eeprom_defs),
+ .cache_type = REGCACHE_NONE,
+};
+
+static int lp8860_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int ret;
+ struct lp8860_led *led;
+ struct device_node *np = dev_of_node(&client->dev);
+ struct device_node *child_node;
+ struct led_init_data init_data = {};
+
+ led = devm_kzalloc(&client->dev, sizeof(*led), GFP_KERNEL);
+ if (!led)
+ return -ENOMEM;
+
+ child_node = of_get_next_available_child(np, NULL);
+ if (!child_node)
+ return -EINVAL;
+
+ led->enable_gpio = devm_gpiod_get_optional(&client->dev,
+ "enable", GPIOD_OUT_LOW);
+ if (IS_ERR(led->enable_gpio)) {
+ ret = PTR_ERR(led->enable_gpio);
+ dev_err(&client->dev, "Failed to get enable gpio: %d\n", ret);
+ return ret;
+ }
+
+ led->regulator = devm_regulator_get(&client->dev, "vled");
+ if (IS_ERR(led->regulator))
+ led->regulator = NULL;
+
+ led->client = client;
+ led->led_dev.brightness_set_blocking = lp8860_brightness_set;
+
+ mutex_init(&led->lock);
+
+ i2c_set_clientdata(client, led);
+
+ led->regmap = devm_regmap_init_i2c(client, &lp8860_regmap_config);
+ if (IS_ERR(led->regmap)) {
+ ret = PTR_ERR(led->regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ led->eeprom_regmap = devm_regmap_init_i2c(client, &lp8860_eeprom_regmap_config);
+ if (IS_ERR(led->eeprom_regmap)) {
+ ret = PTR_ERR(led->eeprom_regmap);
+ dev_err(&client->dev, "Failed to allocate register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ ret = lp8860_init(led);
+ if (ret)
+ return ret;
+
+ init_data.fwnode = of_fwnode_handle(child_node);
+ init_data.devicename = LP8860_NAME;
+ init_data.default_label = ":display_cluster";
+
+ ret = devm_led_classdev_register_ext(&client->dev, &led->led_dev,
+ &init_data);
+ if (ret) {
+ dev_err(&client->dev, "led register err: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void lp8860_remove(struct i2c_client *client)
+{
+ struct lp8860_led *led = i2c_get_clientdata(client);
+ int ret;
+
+ if (led->enable_gpio)
+ gpiod_direction_output(led->enable_gpio, 0);
+
+ if (led->regulator) {
+ ret = regulator_disable(led->regulator);
+ if (ret)
+ dev_err(&led->client->dev,
+ "Failed to disable regulator\n");
+ }
+
+ mutex_destroy(&led->lock);
+}
+
+static const struct i2c_device_id lp8860_id[] = {
+ { "lp8860", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lp8860_id);
+
+static const struct of_device_id of_lp8860_leds_match[] = {
+ { .compatible = "ti,lp8860", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, of_lp8860_leds_match);
+
+static struct i2c_driver lp8860_driver = {
+ .driver = {
+ .name = "lp8860",
+ .of_match_table = of_lp8860_leds_match,
+ },
+ .probe = lp8860_probe,
+ .remove = lp8860_remove,
+ .id_table = lp8860_id,
+};
+module_i2c_driver(lp8860_driver);
+
+MODULE_DESCRIPTION("Texas Instruments LP8860 LED driver");
+MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
+MODULE_LICENSE("GPL v2");