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().
  ...

1 files changed, 1168 insertions, 0 deletions

diff --git a/drivers/media/i2c/ov2680.c b/drivers/media/i2c/ov2680.c
new file mode 100644
index 000000000..54153bf66
--- /dev/null
+++ b/drivers/media/i2c/ov2680.c
@@ -0,0 +1,1168 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Omnivision OV2680 CMOS Image Sensor driver
+ *
+ * Copyright (C) 2018 Linaro Ltd
+ *
+ * Based on OV5640 Sensor Driver
+ * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
+ * Copyright (C) 2014-2017 Mentor Graphics Inc.
+ *
+ */
+
+#include <asm/unaligned.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-subdev.h>
+
+#define OV2680_XVCLK_VALUE	24000000
+
+#define OV2680_CHIP_ID		0x2680
+
+#define OV2680_REG_STREAM_CTRL		0x0100
+#define OV2680_REG_SOFT_RESET		0x0103
+
+#define OV2680_REG_CHIP_ID_HIGH		0x300a
+#define OV2680_REG_CHIP_ID_LOW		0x300b
+
+#define OV2680_REG_R_MANUAL		0x3503
+#define OV2680_REG_GAIN_PK		0x350a
+#define OV2680_REG_EXPOSURE_PK_HIGH	0x3500
+#define OV2680_REG_TIMING_HTS		0x380c
+#define OV2680_REG_TIMING_VTS		0x380e
+#define OV2680_REG_FORMAT1		0x3820
+#define OV2680_REG_FORMAT2		0x3821
+
+#define OV2680_REG_ISP_CTRL00		0x5080
+
+#define OV2680_FRAME_RATE		30
+
+#define OV2680_REG_VALUE_8BIT		1
+#define OV2680_REG_VALUE_16BIT		2
+#define OV2680_REG_VALUE_24BIT		3
+
+#define OV2680_WIDTH_MAX		1600
+#define OV2680_HEIGHT_MAX		1200
+
+enum ov2680_mode_id {
+	OV2680_MODE_QUXGA_800_600,
+	OV2680_MODE_720P_1280_720,
+	OV2680_MODE_UXGA_1600_1200,
+	OV2680_MODE_MAX,
+};
+
+struct reg_value {
+	u16 reg_addr;
+	u8 val;
+};
+
+static const char * const ov2680_supply_name[] = {
+	"DOVDD",
+	"DVDD",
+	"AVDD",
+};
+
+#define OV2680_NUM_SUPPLIES ARRAY_SIZE(ov2680_supply_name)
+
+struct ov2680_mode_info {
+	const char *name;
+	enum ov2680_mode_id id;
+	u32 width;
+	u32 height;
+	const struct reg_value *reg_data;
+	u32 reg_data_size;
+};
+
+struct ov2680_ctrls {
+	struct v4l2_ctrl_handler handler;
+	struct {
+		struct v4l2_ctrl *auto_exp;
+		struct v4l2_ctrl *exposure;
+	};
+	struct {
+		struct v4l2_ctrl *auto_gain;
+		struct v4l2_ctrl *gain;
+	};
+
+	struct v4l2_ctrl *hflip;
+	struct v4l2_ctrl *vflip;
+	struct v4l2_ctrl *test_pattern;
+};
+
+struct ov2680_dev {
+	struct i2c_client		*i2c_client;
+	struct v4l2_subdev		sd;
+
+	struct media_pad		pad;
+	struct clk			*xvclk;
+	u32				xvclk_freq;
+	struct regulator_bulk_data	supplies[OV2680_NUM_SUPPLIES];
+
+	struct gpio_desc		*reset_gpio;
+	struct mutex			lock; /* protect members */
+
+	bool				mode_pending_changes;
+	bool				is_enabled;
+	bool				is_streaming;
+
+	struct ov2680_ctrls		ctrls;
+	struct v4l2_mbus_framefmt	fmt;
+	struct v4l2_fract		frame_interval;
+
+	const struct ov2680_mode_info	*current_mode;
+};
+
+static const char * const test_pattern_menu[] = {
+	"Disabled",
+	"Color Bars",
+	"Random Data",
+	"Square",
+	"Black Image",
+};
+
+static const int ov2680_hv_flip_bayer_order[] = {
+	MEDIA_BUS_FMT_SBGGR10_1X10,
+	MEDIA_BUS_FMT_SGRBG10_1X10,
+	MEDIA_BUS_FMT_SGBRG10_1X10,
+	MEDIA_BUS_FMT_SRGGB10_1X10,
+};
+
+static const struct reg_value ov2680_setting_30fps_QUXGA_800_600[] = {
+	{0x3086, 0x01}, {0x370a, 0x23}, {0x3808, 0x03}, {0x3809, 0x20},
+	{0x380a, 0x02}, {0x380b, 0x58}, {0x380c, 0x06}, {0x380d, 0xac},
+	{0x380e, 0x02}, {0x380f, 0x84}, {0x3811, 0x04}, {0x3813, 0x04},
+	{0x3814, 0x31}, {0x3815, 0x31}, {0x3820, 0xc0}, {0x4008, 0x00},
+	{0x4009, 0x03}, {0x4837, 0x1e}, {0x3501, 0x4e}, {0x3502, 0xe0},
+};
+
+static const struct reg_value ov2680_setting_30fps_720P_1280_720[] = {
+	{0x3086, 0x00}, {0x3808, 0x05}, {0x3809, 0x00}, {0x380a, 0x02},
+	{0x380b, 0xd0}, {0x380c, 0x06}, {0x380d, 0xa8}, {0x380e, 0x05},
+	{0x380f, 0x0e}, {0x3811, 0x08}, {0x3813, 0x06}, {0x3814, 0x11},
+	{0x3815, 0x11}, {0x3820, 0xc0}, {0x4008, 0x00},
+};
+
+static const struct reg_value ov2680_setting_30fps_UXGA_1600_1200[] = {
+	{0x3086, 0x00}, {0x3501, 0x4e}, {0x3502, 0xe0}, {0x3808, 0x06},
+	{0x3809, 0x40}, {0x380a, 0x04}, {0x380b, 0xb0}, {0x380c, 0x06},
+	{0x380d, 0xa8}, {0x380e, 0x05}, {0x380f, 0x0e}, {0x3811, 0x00},
+	{0x3813, 0x00}, {0x3814, 0x11}, {0x3815, 0x11}, {0x3820, 0xc0},
+	{0x4008, 0x00}, {0x4837, 0x18}
+};
+
+static const struct ov2680_mode_info ov2680_mode_init_data = {
+	"mode_quxga_800_600", OV2680_MODE_QUXGA_800_600, 800, 600,
+	ov2680_setting_30fps_QUXGA_800_600,
+	ARRAY_SIZE(ov2680_setting_30fps_QUXGA_800_600),
+};
+
+static const struct ov2680_mode_info ov2680_mode_data[OV2680_MODE_MAX] = {
+	{"mode_quxga_800_600", OV2680_MODE_QUXGA_800_600,
+	 800, 600, ov2680_setting_30fps_QUXGA_800_600,
+	 ARRAY_SIZE(ov2680_setting_30fps_QUXGA_800_600)},
+	{"mode_720p_1280_720", OV2680_MODE_720P_1280_720,
+	 1280, 720, ov2680_setting_30fps_720P_1280_720,
+	 ARRAY_SIZE(ov2680_setting_30fps_720P_1280_720)},
+	{"mode_uxga_1600_1200", OV2680_MODE_UXGA_1600_1200,
+	 1600, 1200, ov2680_setting_30fps_UXGA_1600_1200,
+	 ARRAY_SIZE(ov2680_setting_30fps_UXGA_1600_1200)},
+};
+
+static struct ov2680_dev *to_ov2680_dev(struct v4l2_subdev *sd)
+{
+	return container_of(sd, struct ov2680_dev, sd);
+}
+
+static struct device *ov2680_to_dev(struct ov2680_dev *sensor)
+{
+	return &sensor->i2c_client->dev;
+}
+
+static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
+{
+	return &container_of(ctrl->handler, struct ov2680_dev,
+			     ctrls.handler)->sd;
+}
+
+static int __ov2680_write_reg(struct ov2680_dev *sensor, u16 reg,
+			      unsigned int len, u32 val)
+{
+	struct i2c_client *client = sensor->i2c_client;
+	u8 buf[6];
+	int ret;
+
+	if (len > 4)
+		return -EINVAL;
+
+	put_unaligned_be16(reg, buf);
+	put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
+	ret = i2c_master_send(client, buf, len + 2);
+	if (ret != len + 2) {
+		dev_err(&client->dev, "write error: reg=0x%4x: %d\n", reg, ret);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+#define ov2680_write_reg(s, r, v) \
+	__ov2680_write_reg(s, r, OV2680_REG_VALUE_8BIT, v)
+
+#define ov2680_write_reg16(s, r, v) \
+	__ov2680_write_reg(s, r, OV2680_REG_VALUE_16BIT, v)
+
+#define ov2680_write_reg24(s, r, v) \
+	__ov2680_write_reg(s, r, OV2680_REG_VALUE_24BIT, v)
+
+static int __ov2680_read_reg(struct ov2680_dev *sensor, u16 reg,
+			     unsigned int len, u32 *val)
+{
+	struct i2c_client *client = sensor->i2c_client;
+	struct i2c_msg msgs[2];
+	u8 addr_buf[2] = { reg >> 8, reg & 0xff };
+	u8 data_buf[4] = { 0, };
+	int ret;
+
+	if (len > 4)
+		return -EINVAL;
+
+	msgs[0].addr = client->addr;
+	msgs[0].flags = 0;
+	msgs[0].len = ARRAY_SIZE(addr_buf);
+	msgs[0].buf = addr_buf;
+
+	msgs[1].addr = client->addr;
+	msgs[1].flags = I2C_M_RD;
+	msgs[1].len = len;
+	msgs[1].buf = &data_buf[4 - len];
+
+	ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+	if (ret != ARRAY_SIZE(msgs)) {
+		dev_err(&client->dev, "read error: reg=0x%4x: %d\n", reg, ret);
+		return -EIO;
+	}
+
+	*val = get_unaligned_be32(data_buf);
+
+	return 0;
+}
+
+#define ov2680_read_reg(s, r, v) \
+	__ov2680_read_reg(s, r, OV2680_REG_VALUE_8BIT, v)
+
+#define ov2680_read_reg16(s, r, v) \
+	__ov2680_read_reg(s, r, OV2680_REG_VALUE_16BIT, v)
+
+#define ov2680_read_reg24(s, r, v) \
+	__ov2680_read_reg(s, r, OV2680_REG_VALUE_24BIT, v)
+
+static int ov2680_mod_reg(struct ov2680_dev *sensor, u16 reg, u8 mask, u8 val)
+{
+	u32 readval;
+	int ret;
+
+	ret = ov2680_read_reg(sensor, reg, &readval);
+	if (ret < 0)
+		return ret;
+
+	readval &= ~mask;
+	val &= mask;
+	val |= readval;
+
+	return ov2680_write_reg(sensor, reg, val);
+}
+
+static int ov2680_load_regs(struct ov2680_dev *sensor,
+			    const struct ov2680_mode_info *mode)
+{
+	const struct reg_value *regs = mode->reg_data;
+	unsigned int i;
+	int ret = 0;
+	u16 reg_addr;
+	u8 val;
+
+	for (i = 0; i < mode->reg_data_size; ++i, ++regs) {
+		reg_addr = regs->reg_addr;
+		val = regs->val;
+
+		ret = ov2680_write_reg(sensor, reg_addr, val);
+		if (ret)
+			break;
+	}
+
+	return ret;
+}
+
+static void ov2680_power_up(struct ov2680_dev *sensor)
+{
+	if (!sensor->reset_gpio)
+		return;
+
+	gpiod_set_value(sensor->reset_gpio, 0);
+	usleep_range(5000, 10000);
+}
+
+static void ov2680_power_down(struct ov2680_dev *sensor)
+{
+	if (!sensor->reset_gpio)
+		return;
+
+	gpiod_set_value(sensor->reset_gpio, 1);
+	usleep_range(5000, 10000);
+}
+
+static int ov2680_bayer_order(struct ov2680_dev *sensor)
+{
+	u32 format1;
+	u32 format2;
+	u32 hv_flip;
+	int ret;
+
+	ret = ov2680_read_reg(sensor, OV2680_REG_FORMAT1, &format1);
+	if (ret < 0)
+		return ret;
+
+	ret = ov2680_read_reg(sensor, OV2680_REG_FORMAT2, &format2);
+	if (ret < 0)
+		return ret;
+
+	hv_flip = (format2 & BIT(2)  << 1) | (format1 & BIT(2));
+
+	sensor->fmt.code = ov2680_hv_flip_bayer_order[hv_flip];
+
+	return 0;
+}
+
+static int ov2680_vflip_enable(struct ov2680_dev *sensor)
+{
+	int ret;
+
+	ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT1, BIT(2), BIT(2));
+	if (ret < 0)
+		return ret;
+
+	return ov2680_bayer_order(sensor);
+}
+
+static int ov2680_vflip_disable(struct ov2680_dev *sensor)
+{
+	int ret;
+
+	ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT1, BIT(2), BIT(0));
+	if (ret < 0)
+		return ret;
+
+	return ov2680_bayer_order(sensor);
+}
+
+static int ov2680_hflip_enable(struct ov2680_dev *sensor)
+{
+	int ret;
+
+	ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT2, BIT(2), BIT(2));
+	if (ret < 0)
+		return ret;
+
+	return ov2680_bayer_order(sensor);
+}
+
+static int ov2680_hflip_disable(struct ov2680_dev *sensor)
+{
+	int ret;
+
+	ret = ov2680_mod_reg(sensor, OV2680_REG_FORMAT2, BIT(2), BIT(0));
+	if (ret < 0)
+		return ret;
+
+	return ov2680_bayer_order(sensor);
+}
+
+static int ov2680_test_pattern_set(struct ov2680_dev *sensor, int value)
+{
+	int ret;
+
+	if (!value)
+		return ov2680_mod_reg(sensor, OV2680_REG_ISP_CTRL00, BIT(7), 0);
+
+	ret = ov2680_mod_reg(sensor, OV2680_REG_ISP_CTRL00, 0x03, value - 1);
+	if (ret < 0)
+		return ret;
+
+	ret = ov2680_mod_reg(sensor, OV2680_REG_ISP_CTRL00, BIT(7), BIT(7));
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int ov2680_gain_set(struct ov2680_dev *sensor, bool auto_gain)
+{
+	struct ov2680_ctrls *ctrls = &sensor->ctrls;
+	u32 gain;
+	int ret;
+
+	ret = ov2680_mod_reg(sensor, OV2680_REG_R_MANUAL, BIT(1),
+			     auto_gain ? 0 : BIT(1));
+	if (ret < 0)
+		return ret;
+
+	if (auto_gain || !ctrls->gain->is_new)
+		return 0;
+
+	gain = ctrls->gain->val;
+
+	ret = ov2680_write_reg16(sensor, OV2680_REG_GAIN_PK, gain);
+
+	return 0;
+}
+
+static int ov2680_gain_get(struct ov2680_dev *sensor)
+{
+	u32 gain;
+	int ret;
+
+	ret = ov2680_read_reg16(sensor, OV2680_REG_GAIN_PK, &gain);
+	if (ret)
+		return ret;
+
+	return gain;
+}
+
+static int ov2680_exposure_set(struct ov2680_dev *sensor, bool auto_exp)
+{
+	struct ov2680_ctrls *ctrls = &sensor->ctrls;
+	u32 exp;
+	int ret;
+
+	ret = ov2680_mod_reg(sensor, OV2680_REG_R_MANUAL, BIT(0),
+			     auto_exp ? 0 : BIT(0));
+	if (ret < 0)
+		return ret;
+
+	if (auto_exp || !ctrls->exposure->is_new)
+		return 0;
+
+	exp = (u32)ctrls->exposure->val;
+	exp <<= 4;
+
+	return ov2680_write_reg24(sensor, OV2680_REG_EXPOSURE_PK_HIGH, exp);
+}
+
+static int ov2680_exposure_get(struct ov2680_dev *sensor)
+{
+	int ret;
+	u32 exp;
+
+	ret = ov2680_read_reg24(sensor, OV2680_REG_EXPOSURE_PK_HIGH, &exp);
+	if (ret)
+		return ret;
+
+	return exp >> 4;
+}
+
+static int ov2680_stream_enable(struct ov2680_dev *sensor)
+{
+	return ov2680_write_reg(sensor, OV2680_REG_STREAM_CTRL, 1);
+}
+
+static int ov2680_stream_disable(struct ov2680_dev *sensor)
+{
+	return ov2680_write_reg(sensor, OV2680_REG_STREAM_CTRL, 0);
+}
+
+static int ov2680_mode_set(struct ov2680_dev *sensor)
+{
+	struct ov2680_ctrls *ctrls = &sensor->ctrls;
+	int ret;
+
+	ret = ov2680_gain_set(sensor, false);
+	if (ret < 0)
+		return ret;
+
+	ret = ov2680_exposure_set(sensor, false);
+	if (ret < 0)
+		return ret;
+
+	ret = ov2680_load_regs(sensor, sensor->current_mode);
+	if (ret < 0)
+		return ret;
+
+	if (ctrls->auto_gain->val) {
+		ret = ov2680_gain_set(sensor, true);
+		if (ret < 0)
+			return ret;
+	}
+
+	if (ctrls->auto_exp->val == V4L2_EXPOSURE_AUTO) {
+		ret = ov2680_exposure_set(sensor, true);
+		if (ret < 0)
+			return ret;
+	}
+
+	sensor->mode_pending_changes = false;
+
+	return 0;
+}
+
+static int ov2680_mode_restore(struct ov2680_dev *sensor)
+{
+	int ret;
+
+	ret = ov2680_load_regs(sensor, &ov2680_mode_init_data);
+	if (ret < 0)
+		return ret;
+
+	return ov2680_mode_set(sensor);
+}
+
+static int ov2680_power_off(struct ov2680_dev *sensor)
+{
+	if (!sensor->is_enabled)
+		return 0;
+
+	clk_disable_unprepare(sensor->xvclk);
+	ov2680_power_down(sensor);
+	regulator_bulk_disable(OV2680_NUM_SUPPLIES, sensor->supplies);
+	sensor->is_enabled = false;
+
+	return 0;
+}
+
+static int ov2680_power_on(struct ov2680_dev *sensor)
+{
+	struct device *dev = ov2680_to_dev(sensor);
+	int ret;
+
+	if (sensor->is_enabled)
+		return 0;
+
+	ret = regulator_bulk_enable(OV2680_NUM_SUPPLIES, sensor->supplies);
+	if (ret < 0) {
+		dev_err(dev, "failed to enable regulators: %d\n", ret);
+		return ret;
+	}
+
+	if (!sensor->reset_gpio) {
+		ret = ov2680_write_reg(sensor, OV2680_REG_SOFT_RESET, 0x01);
+		if (ret != 0) {
+			dev_err(dev, "sensor soft reset failed\n");
+			return ret;
+		}
+		usleep_range(1000, 2000);
+	} else {
+		ov2680_power_down(sensor);
+		ov2680_power_up(sensor);
+	}
+
+	ret = clk_prepare_enable(sensor->xvclk);
+	if (ret < 0)
+		return ret;
+
+	sensor->is_enabled = true;
+
+	/* Set clock lane into LP-11 state */
+	ov2680_stream_enable(sensor);
+	usleep_range(1000, 2000);
+	ov2680_stream_disable(sensor);
+
+	return 0;
+}
+
+static int ov2680_s_power(struct v4l2_subdev *sd, int on)
+{
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+	int ret = 0;
+
+	mutex_lock(&sensor->lock);
+
+	if (on)
+		ret = ov2680_power_on(sensor);
+	else
+		ret = ov2680_power_off(sensor);
+
+	mutex_unlock(&sensor->lock);
+
+	if (on && ret == 0) {
+		ret = v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
+		if (ret < 0)
+			return ret;
+
+		ret = ov2680_mode_restore(sensor);
+	}
+
+	return ret;
+}
+
+static int ov2680_s_g_frame_interval(struct v4l2_subdev *sd,
+				     struct v4l2_subdev_frame_interval *fi)
+{
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+
+	mutex_lock(&sensor->lock);
+	fi->interval = sensor->frame_interval;
+	mutex_unlock(&sensor->lock);
+
+	return 0;
+}
+
+static int ov2680_s_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+	int ret = 0;
+
+	mutex_lock(&sensor->lock);
+
+	if (sensor->is_streaming == !!enable)
+		goto unlock;
+
+	if (enable && sensor->mode_pending_changes) {
+		ret = ov2680_mode_set(sensor);
+		if (ret < 0)
+			goto unlock;
+	}
+
+	if (enable)
+		ret = ov2680_stream_enable(sensor);
+	else
+		ret = ov2680_stream_disable(sensor);
+
+	sensor->is_streaming = !!enable;
+
+unlock:
+	mutex_unlock(&sensor->lock);
+
+	return ret;
+}
+
+static int ov2680_enum_mbus_code(struct v4l2_subdev *sd,
+				 struct v4l2_subdev_state *sd_state,
+				 struct v4l2_subdev_mbus_code_enum *code)
+{
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+
+	if (code->pad != 0 || code->index != 0)
+		return -EINVAL;
+
+	code->code = sensor->fmt.code;
+
+	return 0;
+}
+
+static int ov2680_get_fmt(struct v4l2_subdev *sd,
+			  struct v4l2_subdev_state *sd_state,
+			  struct v4l2_subdev_format *format)
+{
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+	struct v4l2_mbus_framefmt *fmt = NULL;
+	int ret = 0;
+
+	if (format->pad != 0)
+		return -EINVAL;
+
+	mutex_lock(&sensor->lock);
+
+	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+		fmt = v4l2_subdev_get_try_format(&sensor->sd, sd_state,
+						 format->pad);
+#else
+		ret = -EINVAL;
+#endif
+	} else {
+		fmt = &sensor->fmt;
+	}
+
+	if (fmt)
+		format->format = *fmt;
+
+	mutex_unlock(&sensor->lock);
+
+	return ret;
+}
+
+static int ov2680_set_fmt(struct v4l2_subdev *sd,
+			  struct v4l2_subdev_state *sd_state,
+			  struct v4l2_subdev_format *format)
+{
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+	struct v4l2_mbus_framefmt *fmt = &format->format;
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+	struct v4l2_mbus_framefmt *try_fmt;
+#endif
+	const struct ov2680_mode_info *mode;
+	int ret = 0;
+
+	if (format->pad != 0)
+		return -EINVAL;
+
+	mutex_lock(&sensor->lock);
+
+	if (sensor->is_streaming) {
+		ret = -EBUSY;
+		goto unlock;
+	}
+
+	mode = v4l2_find_nearest_size(ov2680_mode_data,
+				      ARRAY_SIZE(ov2680_mode_data), width,
+				      height, fmt->width, fmt->height);
+	if (!mode) {
+		ret = -EINVAL;
+		goto unlock;
+	}
+
+	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+		try_fmt = v4l2_subdev_get_try_format(sd, sd_state, 0);
+		format->format = *try_fmt;
+#endif
+		goto unlock;
+	}
+
+	fmt->width = mode->width;
+	fmt->height = mode->height;
+	fmt->code = sensor->fmt.code;
+	fmt->colorspace = sensor->fmt.colorspace;
+
+	sensor->current_mode = mode;
+	sensor->fmt = format->format;
+	sensor->mode_pending_changes = true;
+
+unlock:
+	mutex_unlock(&sensor->lock);
+
+	return ret;
+}
+
+static int ov2680_init_cfg(struct v4l2_subdev *sd,
+			   struct v4l2_subdev_state *sd_state)
+{
+	struct v4l2_subdev_format fmt = {
+		.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY
+		: V4L2_SUBDEV_FORMAT_ACTIVE,
+		.format = {
+			.width = 800,
+			.height = 600,
+		}
+	};
+
+	return ov2680_set_fmt(sd, sd_state, &fmt);
+}
+
+static int ov2680_enum_frame_size(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_frame_size_enum *fse)
+{
+	int index = fse->index;
+
+	if (index >= OV2680_MODE_MAX || index < 0)
+		return -EINVAL;
+
+	fse->min_width = ov2680_mode_data[index].width;
+	fse->min_height = ov2680_mode_data[index].height;
+	fse->max_width = ov2680_mode_data[index].width;
+	fse->max_height = ov2680_mode_data[index].height;
+
+	return 0;
+}
+
+static int ov2680_enum_frame_interval(struct v4l2_subdev *sd,
+			      struct v4l2_subdev_state *sd_state,
+			      struct v4l2_subdev_frame_interval_enum *fie)
+{
+	struct v4l2_fract tpf;
+
+	if (fie->index >= OV2680_MODE_MAX || fie->width > OV2680_WIDTH_MAX ||
+	    fie->height > OV2680_HEIGHT_MAX ||
+	    fie->which > V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
+	tpf.denominator = OV2680_FRAME_RATE;
+	tpf.numerator = 1;
+
+	fie->interval = tpf;
+
+	return 0;
+}
+
+static int ov2680_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+	struct ov2680_ctrls *ctrls = &sensor->ctrls;
+	int val;
+
+	if (!sensor->is_enabled)
+		return 0;
+
+	switch (ctrl->id) {
+	case V4L2_CID_GAIN:
+		val = ov2680_gain_get(sensor);
+		if (val < 0)
+			return val;
+		ctrls->gain->val = val;
+		break;
+	case V4L2_CID_EXPOSURE:
+		val = ov2680_exposure_get(sensor);
+		if (val < 0)
+			return val;
+		ctrls->exposure->val = val;
+		break;
+	}
+
+	return 0;
+}
+
+static int ov2680_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+	struct ov2680_ctrls *ctrls = &sensor->ctrls;
+
+	if (!sensor->is_enabled)
+		return 0;
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUTOGAIN:
+		return ov2680_gain_set(sensor, !!ctrl->val);
+	case V4L2_CID_GAIN:
+		return ov2680_gain_set(sensor, !!ctrls->auto_gain->val);
+	case V4L2_CID_EXPOSURE_AUTO:
+		return ov2680_exposure_set(sensor, !!ctrl->val);
+	case V4L2_CID_EXPOSURE:
+		return ov2680_exposure_set(sensor, !!ctrls->auto_exp->val);
+	case V4L2_CID_VFLIP:
+		if (sensor->is_streaming)
+			return -EBUSY;
+		if (ctrl->val)
+			return ov2680_vflip_enable(sensor);
+		else
+			return ov2680_vflip_disable(sensor);
+	case V4L2_CID_HFLIP:
+		if (sensor->is_streaming)
+			return -EBUSY;
+		if (ctrl->val)
+			return ov2680_hflip_enable(sensor);
+		else
+			return ov2680_hflip_disable(sensor);
+	case V4L2_CID_TEST_PATTERN:
+		return ov2680_test_pattern_set(sensor, ctrl->val);
+	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
+static const struct v4l2_ctrl_ops ov2680_ctrl_ops = {
+	.g_volatile_ctrl = ov2680_g_volatile_ctrl,
+	.s_ctrl = ov2680_s_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops ov2680_core_ops = {
+	.s_power = ov2680_s_power,
+};
+
+static const struct v4l2_subdev_video_ops ov2680_video_ops = {
+	.g_frame_interval	= ov2680_s_g_frame_interval,
+	.s_frame_interval	= ov2680_s_g_frame_interval,
+	.s_stream		= ov2680_s_stream,
+};
+
+static const struct v4l2_subdev_pad_ops ov2680_pad_ops = {
+	.init_cfg		= ov2680_init_cfg,
+	.enum_mbus_code		= ov2680_enum_mbus_code,
+	.get_fmt		= ov2680_get_fmt,
+	.set_fmt		= ov2680_set_fmt,
+	.enum_frame_size	= ov2680_enum_frame_size,
+	.enum_frame_interval	= ov2680_enum_frame_interval,
+};
+
+static const struct v4l2_subdev_ops ov2680_subdev_ops = {
+	.core	= &ov2680_core_ops,
+	.video	= &ov2680_video_ops,
+	.pad	= &ov2680_pad_ops,
+};
+
+static int ov2680_mode_init(struct ov2680_dev *sensor)
+{
+	const struct ov2680_mode_info *init_mode;
+
+	/* set initial mode */
+	sensor->fmt.code = MEDIA_BUS_FMT_SBGGR10_1X10;
+	sensor->fmt.width = 800;
+	sensor->fmt.height = 600;
+	sensor->fmt.field = V4L2_FIELD_NONE;
+	sensor->fmt.colorspace = V4L2_COLORSPACE_SRGB;
+
+	sensor->frame_interval.denominator = OV2680_FRAME_RATE;
+	sensor->frame_interval.numerator = 1;
+
+	init_mode = &ov2680_mode_init_data;
+
+	sensor->current_mode = init_mode;
+
+	sensor->mode_pending_changes = true;
+
+	return 0;
+}
+
+static int ov2680_v4l2_register(struct ov2680_dev *sensor)
+{
+	const struct v4l2_ctrl_ops *ops = &ov2680_ctrl_ops;
+	struct ov2680_ctrls *ctrls = &sensor->ctrls;
+	struct v4l2_ctrl_handler *hdl = &ctrls->handler;
+	int ret = 0;
+
+	v4l2_i2c_subdev_init(&sensor->sd, sensor->i2c_client,
+			     &ov2680_subdev_ops);
+
+#ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
+	sensor->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+#endif
+	sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
+	sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+
+	ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
+	if (ret < 0)
+		return ret;
+
+	v4l2_ctrl_handler_init(hdl, 7);
+
+	hdl->lock = &sensor->lock;
+
+	ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
+	ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
+
+	ctrls->test_pattern = v4l2_ctrl_new_std_menu_items(hdl,
+					&ov2680_ctrl_ops, V4L2_CID_TEST_PATTERN,
+					ARRAY_SIZE(test_pattern_menu) - 1,
+					0, 0, test_pattern_menu);
+
+	ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
+						 V4L2_CID_EXPOSURE_AUTO,
+						 V4L2_EXPOSURE_MANUAL, 0,
+						 V4L2_EXPOSURE_AUTO);
+
+	ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
+					    0, 32767, 1, 0);
+
+	ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN,
+					     0, 1, 1, 1);
+	ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN, 0, 2047, 1, 0);
+
+	if (hdl->error) {
+		ret = hdl->error;
+		goto cleanup_entity;
+	}
+
+	ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
+	ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
+	ctrls->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+	ctrls->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+
+	v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true);
+	v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true);
+
+	sensor->sd.ctrl_handler = hdl;
+
+	ret = v4l2_async_register_subdev(&sensor->sd);
+	if (ret < 0)
+		goto cleanup_entity;
+
+	return 0;
+
+cleanup_entity:
+	media_entity_cleanup(&sensor->sd.entity);
+	v4l2_ctrl_handler_free(hdl);
+
+	return ret;
+}
+
+static int ov2680_get_regulators(struct ov2680_dev *sensor)
+{
+	int i;
+
+	for (i = 0; i < OV2680_NUM_SUPPLIES; i++)
+		sensor->supplies[i].supply = ov2680_supply_name[i];
+
+	return devm_regulator_bulk_get(&sensor->i2c_client->dev,
+				       OV2680_NUM_SUPPLIES,
+				       sensor->supplies);
+}
+
+static int ov2680_check_id(struct ov2680_dev *sensor)
+{
+	struct device *dev = ov2680_to_dev(sensor);
+	u32 chip_id;
+	int ret;
+
+	ov2680_power_on(sensor);
+
+	ret = ov2680_read_reg16(sensor, OV2680_REG_CHIP_ID_HIGH, &chip_id);
+	if (ret < 0) {
+		dev_err(dev, "failed to read chip id high\n");
+		return -ENODEV;
+	}
+
+	if (chip_id != OV2680_CHIP_ID) {
+		dev_err(dev, "chip id: 0x%04x does not match expected 0x%04x\n",
+			chip_id, OV2680_CHIP_ID);
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static int ov2680_parse_dt(struct ov2680_dev *sensor)
+{
+	struct device *dev = ov2680_to_dev(sensor);
+	int ret;
+
+	sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+						     GPIOD_OUT_HIGH);
+	ret = PTR_ERR_OR_ZERO(sensor->reset_gpio);
+	if (ret < 0) {
+		dev_dbg(dev, "error while getting reset gpio: %d\n", ret);
+		return ret;
+	}
+
+	sensor->xvclk = devm_clk_get(dev, "xvclk");
+	if (IS_ERR(sensor->xvclk)) {
+		dev_err(dev, "xvclk clock missing or invalid\n");
+		return PTR_ERR(sensor->xvclk);
+	}
+
+	sensor->xvclk_freq = clk_get_rate(sensor->xvclk);
+	if (sensor->xvclk_freq != OV2680_XVCLK_VALUE) {
+		dev_err(dev, "wrong xvclk frequency %d HZ, expected: %d Hz\n",
+			sensor->xvclk_freq, OV2680_XVCLK_VALUE);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int ov2680_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct ov2680_dev *sensor;
+	int ret;
+
+	sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
+	if (!sensor)
+		return -ENOMEM;
+
+	sensor->i2c_client = client;
+
+	ret = ov2680_parse_dt(sensor);
+	if (ret < 0)
+		return -EINVAL;
+
+	ret = ov2680_mode_init(sensor);
+	if (ret < 0)
+		return ret;
+
+	ret = ov2680_get_regulators(sensor);
+	if (ret < 0) {
+		dev_err(dev, "failed to get regulators\n");
+		return ret;
+	}
+
+	mutex_init(&sensor->lock);
+
+	ret = ov2680_check_id(sensor);
+	if (ret < 0)
+		goto lock_destroy;
+
+	ret = ov2680_v4l2_register(sensor);
+	if (ret < 0)
+		goto lock_destroy;
+
+	dev_info(dev, "ov2680 init correctly\n");
+
+	return 0;
+
+lock_destroy:
+	dev_err(dev, "ov2680 init fail: %d\n", ret);
+	mutex_destroy(&sensor->lock);
+
+	return ret;
+}
+
+static void ov2680_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+
+	v4l2_async_unregister_subdev(&sensor->sd);
+	mutex_destroy(&sensor->lock);
+	media_entity_cleanup(&sensor->sd.entity);
+	v4l2_ctrl_handler_free(&sensor->ctrls.handler);
+}
+
+static int __maybe_unused ov2680_suspend(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+
+	if (sensor->is_streaming)
+		ov2680_stream_disable(sensor);
+
+	return 0;
+}
+
+static int __maybe_unused ov2680_resume(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct ov2680_dev *sensor = to_ov2680_dev(sd);
+	int ret;
+
+	if (sensor->is_streaming) {
+		ret = ov2680_stream_enable(sensor);
+		if (ret < 0)
+			goto stream_disable;
+	}
+
+	return 0;
+
+stream_disable:
+	ov2680_stream_disable(sensor);
+	sensor->is_streaming = false;
+
+	return ret;
+}
+
+static const struct dev_pm_ops ov2680_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(ov2680_suspend, ov2680_resume)
+};
+
+static const struct of_device_id ov2680_dt_ids[] = {
+	{ .compatible = "ovti,ov2680" },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, ov2680_dt_ids);
+
+static struct i2c_driver ov2680_i2c_driver = {
+	.driver = {
+		.name  = "ov2680",
+		.pm = &ov2680_pm_ops,
+		.of_match_table	= of_match_ptr(ov2680_dt_ids),
+	},
+	.probe_new	= ov2680_probe,
+	.remove		= ov2680_remove,
+};
+module_i2c_driver(ov2680_i2c_driver);
+
+MODULE_AUTHOR("Rui Miguel Silva <rui.silva@linaro.org>");
+MODULE_DESCRIPTION("OV2680 CMOS Image Sensor driver");
+MODULE_LICENSE("GPL v2");