From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 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(). ... --- drivers/media/i2c/adp1653.c | 547 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 547 insertions(+) create mode 100644 drivers/media/i2c/adp1653.c (limited to 'drivers/media/i2c/adp1653.c') diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c new file mode 100644 index 000000000..a61a77de6 --- /dev/null +++ b/drivers/media/i2c/adp1653.c @@ -0,0 +1,547 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * drivers/media/i2c/adp1653.c + * + * Copyright (C) 2008--2011 Nokia Corporation + * + * Contact: Sakari Ailus + * + * Contributors: + * Sakari Ailus + * Tuukka Toivonen + * Pavel Machek + * + * TODO: + * - fault interrupt handling + * - hardware strobe + * - power doesn't need to be ON if all lights are off + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define TIMEOUT_MAX 820000 +#define TIMEOUT_STEP 54600 +#define TIMEOUT_MIN (TIMEOUT_MAX - ADP1653_REG_CONFIG_TMR_SET_MAX \ + * TIMEOUT_STEP) +#define TIMEOUT_US_TO_CODE(t) ((TIMEOUT_MAX + (TIMEOUT_STEP / 2) - (t)) \ + / TIMEOUT_STEP) +#define TIMEOUT_CODE_TO_US(c) (TIMEOUT_MAX - (c) * TIMEOUT_STEP) + +/* Write values into ADP1653 registers. */ +static int adp1653_update_hw(struct adp1653_flash *flash) +{ + struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); + u8 out_sel; + u8 config = 0; + int rval; + + out_sel = ADP1653_INDICATOR_INTENSITY_uA_TO_REG( + flash->indicator_intensity->val) + << ADP1653_REG_OUT_SEL_ILED_SHIFT; + + switch (flash->led_mode->val) { + case V4L2_FLASH_LED_MODE_NONE: + break; + case V4L2_FLASH_LED_MODE_FLASH: + /* Flash mode, light on with strobe, duration from timer */ + config = ADP1653_REG_CONFIG_TMR_CFG; + config |= TIMEOUT_US_TO_CODE(flash->flash_timeout->val) + << ADP1653_REG_CONFIG_TMR_SET_SHIFT; + break; + case V4L2_FLASH_LED_MODE_TORCH: + /* Torch mode, light immediately on, duration indefinite */ + out_sel |= ADP1653_FLASH_INTENSITY_mA_TO_REG( + flash->torch_intensity->val) + << ADP1653_REG_OUT_SEL_HPLED_SHIFT; + break; + } + + rval = i2c_smbus_write_byte_data(client, ADP1653_REG_OUT_SEL, out_sel); + if (rval < 0) + return rval; + + rval = i2c_smbus_write_byte_data(client, ADP1653_REG_CONFIG, config); + if (rval < 0) + return rval; + + return 0; +} + +static int adp1653_get_fault(struct adp1653_flash *flash) +{ + struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); + int fault; + int rval; + + fault = i2c_smbus_read_byte_data(client, ADP1653_REG_FAULT); + if (fault < 0) + return fault; + + flash->fault |= fault; + + if (!flash->fault) + return 0; + + /* Clear faults. */ + rval = i2c_smbus_write_byte_data(client, ADP1653_REG_OUT_SEL, 0); + if (rval < 0) + return rval; + + flash->led_mode->val = V4L2_FLASH_LED_MODE_NONE; + + rval = adp1653_update_hw(flash); + if (rval) + return rval; + + return flash->fault; +} + +static int adp1653_strobe(struct adp1653_flash *flash, int enable) +{ + struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); + u8 out_sel = ADP1653_INDICATOR_INTENSITY_uA_TO_REG( + flash->indicator_intensity->val) + << ADP1653_REG_OUT_SEL_ILED_SHIFT; + int rval; + + if (flash->led_mode->val != V4L2_FLASH_LED_MODE_FLASH) + return -EBUSY; + + if (!enable) + return i2c_smbus_write_byte_data(client, ADP1653_REG_OUT_SEL, + out_sel); + + out_sel |= ADP1653_FLASH_INTENSITY_mA_TO_REG( + flash->flash_intensity->val) + << ADP1653_REG_OUT_SEL_HPLED_SHIFT; + rval = i2c_smbus_write_byte_data(client, ADP1653_REG_OUT_SEL, out_sel); + if (rval) + return rval; + + /* Software strobe using i2c */ + rval = i2c_smbus_write_byte_data(client, ADP1653_REG_SW_STROBE, + ADP1653_REG_SW_STROBE_SW_STROBE); + if (rval) + return rval; + return i2c_smbus_write_byte_data(client, ADP1653_REG_SW_STROBE, 0); +} + +/* -------------------------------------------------------------------------- + * V4L2 controls + */ + +static int adp1653_get_ctrl(struct v4l2_ctrl *ctrl) +{ + struct adp1653_flash *flash = + container_of(ctrl->handler, struct adp1653_flash, ctrls); + int rval; + + rval = adp1653_get_fault(flash); + if (rval) + return rval; + + ctrl->cur.val = 0; + + if (flash->fault & ADP1653_REG_FAULT_FLT_SCP) + ctrl->cur.val |= V4L2_FLASH_FAULT_SHORT_CIRCUIT; + if (flash->fault & ADP1653_REG_FAULT_FLT_OT) + ctrl->cur.val |= V4L2_FLASH_FAULT_OVER_TEMPERATURE; + if (flash->fault & ADP1653_REG_FAULT_FLT_TMR) + ctrl->cur.val |= V4L2_FLASH_FAULT_TIMEOUT; + if (flash->fault & ADP1653_REG_FAULT_FLT_OV) + ctrl->cur.val |= V4L2_FLASH_FAULT_OVER_VOLTAGE; + + flash->fault = 0; + + return 0; +} + +static int adp1653_set_ctrl(struct v4l2_ctrl *ctrl) +{ + struct adp1653_flash *flash = + container_of(ctrl->handler, struct adp1653_flash, ctrls); + int rval; + + rval = adp1653_get_fault(flash); + if (rval) + return rval; + if ((rval & (ADP1653_REG_FAULT_FLT_SCP | + ADP1653_REG_FAULT_FLT_OT | + ADP1653_REG_FAULT_FLT_OV)) && + (ctrl->id == V4L2_CID_FLASH_STROBE || + ctrl->id == V4L2_CID_FLASH_TORCH_INTENSITY || + ctrl->id == V4L2_CID_FLASH_LED_MODE)) + return -EBUSY; + + switch (ctrl->id) { + case V4L2_CID_FLASH_STROBE: + return adp1653_strobe(flash, 1); + case V4L2_CID_FLASH_STROBE_STOP: + return adp1653_strobe(flash, 0); + } + + return adp1653_update_hw(flash); +} + +static const struct v4l2_ctrl_ops adp1653_ctrl_ops = { + .g_volatile_ctrl = adp1653_get_ctrl, + .s_ctrl = adp1653_set_ctrl, +}; + +static int adp1653_init_controls(struct adp1653_flash *flash) +{ + struct v4l2_ctrl *fault; + + v4l2_ctrl_handler_init(&flash->ctrls, 9); + + flash->led_mode = + v4l2_ctrl_new_std_menu(&flash->ctrls, &adp1653_ctrl_ops, + V4L2_CID_FLASH_LED_MODE, + V4L2_FLASH_LED_MODE_TORCH, ~0x7, 0); + v4l2_ctrl_new_std_menu(&flash->ctrls, &adp1653_ctrl_ops, + V4L2_CID_FLASH_STROBE_SOURCE, + V4L2_FLASH_STROBE_SOURCE_SOFTWARE, ~0x1, 0); + v4l2_ctrl_new_std(&flash->ctrls, &adp1653_ctrl_ops, + V4L2_CID_FLASH_STROBE, 0, 0, 0, 0); + v4l2_ctrl_new_std(&flash->ctrls, &adp1653_ctrl_ops, + V4L2_CID_FLASH_STROBE_STOP, 0, 0, 0, 0); + flash->flash_timeout = + v4l2_ctrl_new_std(&flash->ctrls, &adp1653_ctrl_ops, + V4L2_CID_FLASH_TIMEOUT, TIMEOUT_MIN, + flash->platform_data->max_flash_timeout, + TIMEOUT_STEP, + flash->platform_data->max_flash_timeout); + flash->flash_intensity = + v4l2_ctrl_new_std(&flash->ctrls, &adp1653_ctrl_ops, + V4L2_CID_FLASH_INTENSITY, + ADP1653_FLASH_INTENSITY_MIN, + flash->platform_data->max_flash_intensity, + 1, flash->platform_data->max_flash_intensity); + flash->torch_intensity = + v4l2_ctrl_new_std(&flash->ctrls, &adp1653_ctrl_ops, + V4L2_CID_FLASH_TORCH_INTENSITY, + ADP1653_TORCH_INTENSITY_MIN, + flash->platform_data->max_torch_intensity, + ADP1653_FLASH_INTENSITY_STEP, + flash->platform_data->max_torch_intensity); + flash->indicator_intensity = + v4l2_ctrl_new_std(&flash->ctrls, &adp1653_ctrl_ops, + V4L2_CID_FLASH_INDICATOR_INTENSITY, + ADP1653_INDICATOR_INTENSITY_MIN, + flash->platform_data->max_indicator_intensity, + ADP1653_INDICATOR_INTENSITY_STEP, + ADP1653_INDICATOR_INTENSITY_MIN); + fault = v4l2_ctrl_new_std(&flash->ctrls, &adp1653_ctrl_ops, + V4L2_CID_FLASH_FAULT, 0, + V4L2_FLASH_FAULT_OVER_VOLTAGE + | V4L2_FLASH_FAULT_OVER_TEMPERATURE + | V4L2_FLASH_FAULT_SHORT_CIRCUIT, 0, 0); + + if (flash->ctrls.error) + return flash->ctrls.error; + + fault->flags |= V4L2_CTRL_FLAG_VOLATILE; + + flash->subdev.ctrl_handler = &flash->ctrls; + return 0; +} + +/* -------------------------------------------------------------------------- + * V4L2 subdev operations + */ + +static int +adp1653_init_device(struct adp1653_flash *flash) +{ + struct i2c_client *client = v4l2_get_subdevdata(&flash->subdev); + int rval; + + /* Clear FAULT register by writing zero to OUT_SEL */ + rval = i2c_smbus_write_byte_data(client, ADP1653_REG_OUT_SEL, 0); + if (rval < 0) { + dev_err(&client->dev, "failed writing fault register\n"); + return -EIO; + } + + mutex_lock(flash->ctrls.lock); + /* Reset faults before reading new ones. */ + flash->fault = 0; + rval = adp1653_get_fault(flash); + mutex_unlock(flash->ctrls.lock); + if (rval > 0) { + dev_err(&client->dev, "faults detected: 0x%1.1x\n", rval); + return -EIO; + } + + mutex_lock(flash->ctrls.lock); + rval = adp1653_update_hw(flash); + mutex_unlock(flash->ctrls.lock); + if (rval) { + dev_err(&client->dev, + "adp1653_update_hw failed at %s\n", __func__); + return -EIO; + } + + return 0; +} + +static int +__adp1653_set_power(struct adp1653_flash *flash, int on) +{ + int ret; + + if (flash->platform_data->power) { + ret = flash->platform_data->power(&flash->subdev, on); + if (ret < 0) + return ret; + } else { + gpiod_set_value(flash->platform_data->enable_gpio, on); + if (on) + /* Some delay is apparently required. */ + udelay(20); + } + + if (!on) + return 0; + + ret = adp1653_init_device(flash); + if (ret >= 0) + return ret; + + if (flash->platform_data->power) + flash->platform_data->power(&flash->subdev, 0); + else + gpiod_set_value(flash->platform_data->enable_gpio, 0); + + return ret; +} + +static int +adp1653_set_power(struct v4l2_subdev *subdev, int on) +{ + struct adp1653_flash *flash = to_adp1653_flash(subdev); + int ret = 0; + + mutex_lock(&flash->power_lock); + + /* If the power count is modified from 0 to != 0 or from != 0 to 0, + * update the power state. + */ + if (flash->power_count == !on) { + ret = __adp1653_set_power(flash, !!on); + if (ret < 0) + goto done; + } + + /* Update the power count. */ + flash->power_count += on ? 1 : -1; + WARN_ON(flash->power_count < 0); + +done: + mutex_unlock(&flash->power_lock); + return ret; +} + +static int adp1653_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + return adp1653_set_power(sd, 1); +} + +static int adp1653_close(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) +{ + return adp1653_set_power(sd, 0); +} + +static const struct v4l2_subdev_core_ops adp1653_core_ops = { + .s_power = adp1653_set_power, +}; + +static const struct v4l2_subdev_ops adp1653_ops = { + .core = &adp1653_core_ops, +}; + +static const struct v4l2_subdev_internal_ops adp1653_internal_ops = { + .open = adp1653_open, + .close = adp1653_close, +}; + +/* -------------------------------------------------------------------------- + * I2C driver + */ +#ifdef CONFIG_PM + +static int adp1653_suspend(struct device *dev) +{ + struct v4l2_subdev *subdev = dev_get_drvdata(dev); + struct adp1653_flash *flash = to_adp1653_flash(subdev); + + if (!flash->power_count) + return 0; + + return __adp1653_set_power(flash, 0); +} + +static int adp1653_resume(struct device *dev) +{ + struct v4l2_subdev *subdev = dev_get_drvdata(dev); + struct adp1653_flash *flash = to_adp1653_flash(subdev); + + if (!flash->power_count) + return 0; + + return __adp1653_set_power(flash, 1); +} + +#else + +#define adp1653_suspend NULL +#define adp1653_resume NULL + +#endif /* CONFIG_PM */ + +static int adp1653_of_init(struct i2c_client *client, + struct adp1653_flash *flash, + struct device_node *node) +{ + struct adp1653_platform_data *pd; + struct device_node *child; + + pd = devm_kzalloc(&client->dev, sizeof(*pd), GFP_KERNEL); + if (!pd) + return -ENOMEM; + flash->platform_data = pd; + + child = of_get_child_by_name(node, "flash"); + if (!child) + return -EINVAL; + + if (of_property_read_u32(child, "flash-timeout-us", + &pd->max_flash_timeout)) + goto err; + + if (of_property_read_u32(child, "flash-max-microamp", + &pd->max_flash_intensity)) + goto err; + + pd->max_flash_intensity /= 1000; + + if (of_property_read_u32(child, "led-max-microamp", + &pd->max_torch_intensity)) + goto err; + + pd->max_torch_intensity /= 1000; + of_node_put(child); + + child = of_get_child_by_name(node, "indicator"); + if (!child) + return -EINVAL; + + if (of_property_read_u32(child, "led-max-microamp", + &pd->max_indicator_intensity)) + goto err; + + of_node_put(child); + + pd->enable_gpio = devm_gpiod_get(&client->dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(pd->enable_gpio)) { + dev_err(&client->dev, "Error getting GPIO\n"); + return PTR_ERR(pd->enable_gpio); + } + + return 0; +err: + dev_err(&client->dev, "Required property not found\n"); + of_node_put(child); + return -EINVAL; +} + + +static int adp1653_probe(struct i2c_client *client) +{ + struct adp1653_flash *flash; + int ret; + + flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL); + if (flash == NULL) + return -ENOMEM; + + if (client->dev.of_node) { + ret = adp1653_of_init(client, flash, client->dev.of_node); + if (ret) + return ret; + } else { + if (!client->dev.platform_data) { + dev_err(&client->dev, + "Neither DT not platform data provided\n"); + return -EINVAL; + } + flash->platform_data = client->dev.platform_data; + } + + mutex_init(&flash->power_lock); + + v4l2_i2c_subdev_init(&flash->subdev, client, &adp1653_ops); + flash->subdev.internal_ops = &adp1653_internal_ops; + flash->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + + ret = adp1653_init_controls(flash); + if (ret) + goto free_and_quit; + + ret = media_entity_pads_init(&flash->subdev.entity, 0, NULL); + if (ret < 0) + goto free_and_quit; + + flash->subdev.entity.function = MEDIA_ENT_F_FLASH; + + return 0; + +free_and_quit: + dev_err(&client->dev, "adp1653: failed to register device\n"); + v4l2_ctrl_handler_free(&flash->ctrls); + return ret; +} + +static void adp1653_remove(struct i2c_client *client) +{ + struct v4l2_subdev *subdev = i2c_get_clientdata(client); + struct adp1653_flash *flash = to_adp1653_flash(subdev); + + v4l2_device_unregister_subdev(&flash->subdev); + v4l2_ctrl_handler_free(&flash->ctrls); + media_entity_cleanup(&flash->subdev.entity); +} + +static const struct i2c_device_id adp1653_id_table[] = { + { ADP1653_NAME, 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, adp1653_id_table); + +static const struct dev_pm_ops adp1653_pm_ops = { + .suspend = adp1653_suspend, + .resume = adp1653_resume, +}; + +static struct i2c_driver adp1653_i2c_driver = { + .driver = { + .name = ADP1653_NAME, + .pm = &adp1653_pm_ops, + }, + .probe_new = adp1653_probe, + .remove = adp1653_remove, + .id_table = adp1653_id_table, +}; + +module_i2c_driver(adp1653_i2c_driver); + +MODULE_AUTHOR("Sakari Ailus "); +MODULE_DESCRIPTION("Analog Devices ADP1653 LED flash driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3