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, 1298 insertions, 0 deletions

diff --git a/drivers/media/i2c/imx290.c b/drivers/media/i2c/imx290.c
new file mode 100644
index 000000000..218ded13f
--- /dev/null
+++ b/drivers/media/i2c/imx290.c
@@ -0,0 +1,1298 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Sony IMX290 CMOS Image Sensor Driver
+ *
+ * Copyright (C) 2019 FRAMOS GmbH.
+ *
+ * Copyright (C) 2019 Linaro Ltd.
+ * Author: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <media/media-entity.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-subdev.h>
+
+#define IMX290_REG_SIZE_SHIFT				16
+#define IMX290_REG_ADDR_MASK				0xffff
+#define IMX290_REG_8BIT(n)				((1U << IMX290_REG_SIZE_SHIFT) | (n))
+#define IMX290_REG_16BIT(n)				((2U << IMX290_REG_SIZE_SHIFT) | (n))
+#define IMX290_REG_24BIT(n)				((3U << IMX290_REG_SIZE_SHIFT) | (n))
+
+#define IMX290_STANDBY					IMX290_REG_8BIT(0x3000)
+#define IMX290_REGHOLD					IMX290_REG_8BIT(0x3001)
+#define IMX290_XMSTA					IMX290_REG_8BIT(0x3002)
+#define IMX290_ADBIT					IMX290_REG_8BIT(0x3005)
+#define IMX290_ADBIT_10BIT				(0 << 0)
+#define IMX290_ADBIT_12BIT				(1 << 0)
+#define IMX290_CTRL_07					IMX290_REG_8BIT(0x3007)
+#define IMX290_VREVERSE					BIT(0)
+#define IMX290_HREVERSE					BIT(1)
+#define IMX290_WINMODE_1080P				(0 << 4)
+#define IMX290_WINMODE_720P				(1 << 4)
+#define IMX290_WINMODE_CROP				(4 << 4)
+#define IMX290_FR_FDG_SEL				IMX290_REG_8BIT(0x3009)
+#define IMX290_BLKLEVEL					IMX290_REG_16BIT(0x300a)
+#define IMX290_GAIN					IMX290_REG_8BIT(0x3014)
+#define IMX290_VMAX					IMX290_REG_24BIT(0x3018)
+#define IMX290_HMAX					IMX290_REG_16BIT(0x301c)
+#define IMX290_SHS1					IMX290_REG_24BIT(0x3020)
+#define IMX290_WINWV_OB					IMX290_REG_8BIT(0x303a)
+#define IMX290_WINPV					IMX290_REG_16BIT(0x303c)
+#define IMX290_WINWV					IMX290_REG_16BIT(0x303e)
+#define IMX290_WINPH					IMX290_REG_16BIT(0x3040)
+#define IMX290_WINWH					IMX290_REG_16BIT(0x3042)
+#define IMX290_OUT_CTRL					IMX290_REG_8BIT(0x3046)
+#define IMX290_ODBIT_10BIT				(0 << 0)
+#define IMX290_ODBIT_12BIT				(1 << 0)
+#define IMX290_OPORTSEL_PARALLEL			(0x0 << 4)
+#define IMX290_OPORTSEL_LVDS_2CH			(0xd << 4)
+#define IMX290_OPORTSEL_LVDS_4CH			(0xe << 4)
+#define IMX290_OPORTSEL_LVDS_8CH			(0xf << 4)
+#define IMX290_XSOUTSEL					IMX290_REG_8BIT(0x304b)
+#define IMX290_XSOUTSEL_XVSOUTSEL_HIGH			(0 << 0)
+#define IMX290_XSOUTSEL_XVSOUTSEL_VSYNC			(2 << 0)
+#define IMX290_XSOUTSEL_XHSOUTSEL_HIGH			(0 << 2)
+#define IMX290_XSOUTSEL_XHSOUTSEL_HSYNC			(2 << 2)
+#define IMX290_INCKSEL1					IMX290_REG_8BIT(0x305c)
+#define IMX290_INCKSEL2					IMX290_REG_8BIT(0x305d)
+#define IMX290_INCKSEL3					IMX290_REG_8BIT(0x305e)
+#define IMX290_INCKSEL4					IMX290_REG_8BIT(0x305f)
+#define IMX290_PGCTRL					IMX290_REG_8BIT(0x308c)
+#define IMX290_ADBIT1					IMX290_REG_8BIT(0x3129)
+#define IMX290_ADBIT1_10BIT				0x1d
+#define IMX290_ADBIT1_12BIT				0x00
+#define IMX290_INCKSEL5					IMX290_REG_8BIT(0x315e)
+#define IMX290_INCKSEL6					IMX290_REG_8BIT(0x3164)
+#define IMX290_ADBIT2					IMX290_REG_8BIT(0x317c)
+#define IMX290_ADBIT2_10BIT				0x12
+#define IMX290_ADBIT2_12BIT				0x00
+#define IMX290_CHIP_ID					IMX290_REG_16BIT(0x319a)
+#define IMX290_ADBIT3					IMX290_REG_8BIT(0x31ec)
+#define IMX290_ADBIT3_10BIT				0x37
+#define IMX290_ADBIT3_12BIT				0x0e
+#define IMX290_REPETITION				IMX290_REG_8BIT(0x3405)
+#define IMX290_PHY_LANE_NUM				IMX290_REG_8BIT(0x3407)
+#define IMX290_OPB_SIZE_V				IMX290_REG_8BIT(0x3414)
+#define IMX290_Y_OUT_SIZE				IMX290_REG_16BIT(0x3418)
+#define IMX290_CSI_DT_FMT				IMX290_REG_16BIT(0x3441)
+#define IMX290_CSI_DT_FMT_RAW10				0x0a0a
+#define IMX290_CSI_DT_FMT_RAW12				0x0c0c
+#define IMX290_CSI_LANE_MODE				IMX290_REG_8BIT(0x3443)
+#define IMX290_EXTCK_FREQ				IMX290_REG_16BIT(0x3444)
+#define IMX290_TCLKPOST					IMX290_REG_16BIT(0x3446)
+#define IMX290_THSZERO					IMX290_REG_16BIT(0x3448)
+#define IMX290_THSPREPARE				IMX290_REG_16BIT(0x344a)
+#define IMX290_TCLKTRAIL				IMX290_REG_16BIT(0x344c)
+#define IMX290_THSTRAIL					IMX290_REG_16BIT(0x344e)
+#define IMX290_TCLKZERO					IMX290_REG_16BIT(0x3450)
+#define IMX290_TCLKPREPARE				IMX290_REG_16BIT(0x3452)
+#define IMX290_TLPX					IMX290_REG_16BIT(0x3454)
+#define IMX290_X_OUT_SIZE				IMX290_REG_16BIT(0x3472)
+
+#define IMX290_PGCTRL_REGEN				BIT(0)
+#define IMX290_PGCTRL_THRU				BIT(1)
+#define IMX290_PGCTRL_MODE(n)				((n) << 4)
+
+#define IMX290_VMAX_DEFAULT				1125
+
+
+/*
+ * The IMX290 pixel array is organized as follows:
+ *
+ *     +------------------------------------+
+ *     |           Optical Black            |     }  Vertical effective optical black (10)
+ * +---+------------------------------------+---+
+ * |   |                                    |   | }  Effective top margin (8)
+ * |   |   +----------------------------+   |   | \
+ * |   |   |                            |   |   |  |
+ * |   |   |                            |   |   |  |
+ * |   |   |                            |   |   |  |
+ * |   |   |    Recording Pixel Area    |   |   |  | Recommended height (1080)
+ * |   |   |                            |   |   |  |
+ * |   |   |                            |   |   |  |
+ * |   |   |                            |   |   |  |
+ * |   |   +----------------------------+   |   | /
+ * |   |                                    |   | }  Effective bottom margin (9)
+ * +---+------------------------------------+---+
+ *  <-> <-> <--------------------------> <-> <->
+ *                                            \----  Ignored right margin (4)
+ *                                        \--------  Effective right margin (9)
+ *                       \-------------------------  Recommended width (1920)
+ *       \-----------------------------------------  Effective left margin (8)
+ *   \---------------------------------------------  Ignored left margin (4)
+ *
+ * The optical black lines are output over CSI-2 with a separate data type.
+ *
+ * The pixel array is meant to have 1920x1080 usable pixels after image
+ * processing in an ISP. It has 8 (9) extra active pixels usable for color
+ * processing in the ISP on the top and left (bottom and right) sides of the
+ * image. In addition, 4 additional pixels are present on the left and right
+ * sides of the image, documented as "ignored area".
+ *
+ * As far as is understood, all pixels of the pixel array (ignored area, color
+ * processing margins and recording area) can be output by the sensor.
+ */
+
+#define IMX290_PIXEL_ARRAY_WIDTH			1945
+#define IMX290_PIXEL_ARRAY_HEIGHT			1097
+#define IMX920_PIXEL_ARRAY_MARGIN_LEFT			12
+#define IMX920_PIXEL_ARRAY_MARGIN_RIGHT			13
+#define IMX920_PIXEL_ARRAY_MARGIN_TOP			8
+#define IMX920_PIXEL_ARRAY_MARGIN_BOTTOM		9
+#define IMX290_PIXEL_ARRAY_RECORDING_WIDTH		1920
+#define IMX290_PIXEL_ARRAY_RECORDING_HEIGHT		1080
+
+static const char * const imx290_supply_name[] = {
+	"vdda",
+	"vddd",
+	"vdddo",
+};
+
+#define IMX290_NUM_SUPPLIES ARRAY_SIZE(imx290_supply_name)
+
+struct imx290_regval {
+	u32 reg;
+	u32 val;
+};
+
+struct imx290_mode {
+	u32 width;
+	u32 height;
+	u32 hmax;
+	u8 link_freq_index;
+
+	const struct imx290_regval *data;
+	u32 data_size;
+};
+
+struct imx290 {
+	struct device *dev;
+	struct clk *xclk;
+	struct regmap *regmap;
+	u8 nlanes;
+	u8 bpp;
+
+	struct v4l2_subdev sd;
+	struct media_pad pad;
+	struct v4l2_mbus_framefmt current_format;
+	const struct imx290_mode *current_mode;
+
+	struct regulator_bulk_data supplies[IMX290_NUM_SUPPLIES];
+	struct gpio_desc *rst_gpio;
+
+	struct v4l2_ctrl_handler ctrls;
+	struct v4l2_ctrl *link_freq;
+	struct v4l2_ctrl *pixel_rate;
+	struct v4l2_ctrl *hblank;
+	struct v4l2_ctrl *vblank;
+
+	struct mutex lock;
+};
+
+struct imx290_pixfmt {
+	u32 code;
+	u8 bpp;
+};
+
+static const struct imx290_pixfmt imx290_formats[] = {
+	{ MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
+};
+
+static const struct regmap_config imx290_regmap_config = {
+	.reg_bits = 16,
+	.val_bits = 8,
+};
+
+static const char * const imx290_test_pattern_menu[] = {
+	"Disabled",
+	"Sequence Pattern 1",
+	"Horizontal Color-bar Chart",
+	"Vertical Color-bar Chart",
+	"Sequence Pattern 2",
+	"Gradation Pattern 1",
+	"Gradation Pattern 2",
+	"000/555h Toggle Pattern",
+};
+
+static const struct imx290_regval imx290_global_init_settings[] = {
+	{ IMX290_CTRL_07, IMX290_WINMODE_1080P },
+	{ IMX290_VMAX, IMX290_VMAX_DEFAULT },
+	{ IMX290_EXTCK_FREQ, 0x2520 },
+	{ IMX290_WINWV_OB, 12 },
+	{ IMX290_WINPH, 0 },
+	{ IMX290_WINPV, 0 },
+	{ IMX290_WINWH, 1948 },
+	{ IMX290_WINWV, 1097 },
+	{ IMX290_XSOUTSEL, IMX290_XSOUTSEL_XVSOUTSEL_VSYNC |
+			   IMX290_XSOUTSEL_XHSOUTSEL_HSYNC },
+	{ IMX290_REG_8BIT(0x300f), 0x00 },
+	{ IMX290_REG_8BIT(0x3010), 0x21 },
+	{ IMX290_REG_8BIT(0x3012), 0x64 },
+	{ IMX290_REG_8BIT(0x3013), 0x00 },
+	{ IMX290_REG_8BIT(0x3016), 0x09 },
+	{ IMX290_REG_8BIT(0x3070), 0x02 },
+	{ IMX290_REG_8BIT(0x3071), 0x11 },
+	{ IMX290_REG_8BIT(0x309b), 0x10 },
+	{ IMX290_REG_8BIT(0x309c), 0x22 },
+	{ IMX290_REG_8BIT(0x30a2), 0x02 },
+	{ IMX290_REG_8BIT(0x30a6), 0x20 },
+	{ IMX290_REG_8BIT(0x30a8), 0x20 },
+	{ IMX290_REG_8BIT(0x30aa), 0x20 },
+	{ IMX290_REG_8BIT(0x30ac), 0x20 },
+	{ IMX290_REG_8BIT(0x30b0), 0x43 },
+	{ IMX290_REG_8BIT(0x3119), 0x9e },
+	{ IMX290_REG_8BIT(0x311c), 0x1e },
+	{ IMX290_REG_8BIT(0x311e), 0x08 },
+	{ IMX290_REG_8BIT(0x3128), 0x05 },
+	{ IMX290_REG_8BIT(0x313d), 0x83 },
+	{ IMX290_REG_8BIT(0x3150), 0x03 },
+	{ IMX290_REG_8BIT(0x317e), 0x00 },
+	{ IMX290_REG_8BIT(0x32b8), 0x50 },
+	{ IMX290_REG_8BIT(0x32b9), 0x10 },
+	{ IMX290_REG_8BIT(0x32ba), 0x00 },
+	{ IMX290_REG_8BIT(0x32bb), 0x04 },
+	{ IMX290_REG_8BIT(0x32c8), 0x50 },
+	{ IMX290_REG_8BIT(0x32c9), 0x10 },
+	{ IMX290_REG_8BIT(0x32ca), 0x00 },
+	{ IMX290_REG_8BIT(0x32cb), 0x04 },
+	{ IMX290_REG_8BIT(0x332c), 0xd3 },
+	{ IMX290_REG_8BIT(0x332d), 0x10 },
+	{ IMX290_REG_8BIT(0x332e), 0x0d },
+	{ IMX290_REG_8BIT(0x3358), 0x06 },
+	{ IMX290_REG_8BIT(0x3359), 0xe1 },
+	{ IMX290_REG_8BIT(0x335a), 0x11 },
+	{ IMX290_REG_8BIT(0x3360), 0x1e },
+	{ IMX290_REG_8BIT(0x3361), 0x61 },
+	{ IMX290_REG_8BIT(0x3362), 0x10 },
+	{ IMX290_REG_8BIT(0x33b0), 0x50 },
+	{ IMX290_REG_8BIT(0x33b2), 0x1a },
+	{ IMX290_REG_8BIT(0x33b3), 0x04 },
+	{ IMX290_REG_8BIT(0x3480), 0x49 },
+};
+
+static const struct imx290_regval imx290_1080p_settings[] = {
+	/* mode settings */
+	{ IMX290_CTRL_07, IMX290_WINMODE_1080P },
+	{ IMX290_WINWV_OB, 12 },
+	{ IMX290_OPB_SIZE_V, 10 },
+	{ IMX290_X_OUT_SIZE, 1920 },
+	{ IMX290_Y_OUT_SIZE, 1080 },
+	{ IMX290_INCKSEL1, 0x18 },
+	{ IMX290_INCKSEL2, 0x03 },
+	{ IMX290_INCKSEL3, 0x20 },
+	{ IMX290_INCKSEL4, 0x01 },
+	{ IMX290_INCKSEL5, 0x1a },
+	{ IMX290_INCKSEL6, 0x1a },
+	/* data rate settings */
+	{ IMX290_REPETITION, 0x10 },
+	{ IMX290_TCLKPOST, 87 },
+	{ IMX290_THSZERO, 55 },
+	{ IMX290_THSPREPARE, 31 },
+	{ IMX290_TCLKTRAIL, 31 },
+	{ IMX290_THSTRAIL, 31 },
+	{ IMX290_TCLKZERO, 119 },
+	{ IMX290_TCLKPREPARE, 31 },
+	{ IMX290_TLPX, 23 },
+};
+
+static const struct imx290_regval imx290_720p_settings[] = {
+	/* mode settings */
+	{ IMX290_CTRL_07, IMX290_WINMODE_720P },
+	{ IMX290_WINWV_OB, 6 },
+	{ IMX290_OPB_SIZE_V, 4 },
+	{ IMX290_X_OUT_SIZE, 1280 },
+	{ IMX290_Y_OUT_SIZE, 720 },
+	{ IMX290_INCKSEL1, 0x20 },
+	{ IMX290_INCKSEL2, 0x00 },
+	{ IMX290_INCKSEL3, 0x20 },
+	{ IMX290_INCKSEL4, 0x01 },
+	{ IMX290_INCKSEL5, 0x1a },
+	{ IMX290_INCKSEL6, 0x1a },
+	/* data rate settings */
+	{ IMX290_REPETITION, 0x10 },
+	{ IMX290_TCLKPOST, 79 },
+	{ IMX290_THSZERO, 47 },
+	{ IMX290_THSPREPARE, 23 },
+	{ IMX290_TCLKTRAIL, 23 },
+	{ IMX290_THSTRAIL, 23 },
+	{ IMX290_TCLKZERO, 87 },
+	{ IMX290_TCLKPREPARE, 23 },
+	{ IMX290_TLPX, 23 },
+};
+
+static const struct imx290_regval imx290_10bit_settings[] = {
+	{ IMX290_ADBIT, IMX290_ADBIT_10BIT },
+	{ IMX290_OUT_CTRL, IMX290_ODBIT_10BIT },
+	{ IMX290_ADBIT1, IMX290_ADBIT1_10BIT },
+	{ IMX290_ADBIT2, IMX290_ADBIT2_10BIT },
+	{ IMX290_ADBIT3, IMX290_ADBIT3_10BIT },
+	{ IMX290_CSI_DT_FMT, IMX290_CSI_DT_FMT_RAW10 },
+	{ IMX290_BLKLEVEL, 60 },
+};
+
+static const struct imx290_regval imx290_12bit_settings[] = {
+	{ IMX290_ADBIT, IMX290_ADBIT_12BIT },
+	{ IMX290_OUT_CTRL, IMX290_ODBIT_12BIT },
+	{ IMX290_ADBIT1, IMX290_ADBIT1_12BIT },
+	{ IMX290_ADBIT2, IMX290_ADBIT2_12BIT },
+	{ IMX290_ADBIT3, IMX290_ADBIT3_12BIT },
+	{ IMX290_CSI_DT_FMT, IMX290_CSI_DT_FMT_RAW12 },
+	{ IMX290_BLKLEVEL, 240 },
+};
+
+/* supported link frequencies */
+#define FREQ_INDEX_1080P	0
+#define FREQ_INDEX_720P		1
+static const s64 imx290_link_freq_2lanes[] = {
+	[FREQ_INDEX_1080P] = 445500000,
+	[FREQ_INDEX_720P] = 297000000,
+};
+static const s64 imx290_link_freq_4lanes[] = {
+	[FREQ_INDEX_1080P] = 222750000,
+	[FREQ_INDEX_720P] = 148500000,
+};
+
+/*
+ * In this function and in the similar ones below We rely on imx290_probe()
+ * to ensure that nlanes is either 2 or 4.
+ */
+static inline const s64 *imx290_link_freqs_ptr(const struct imx290 *imx290)
+{
+	if (imx290->nlanes == 2)
+		return imx290_link_freq_2lanes;
+	else
+		return imx290_link_freq_4lanes;
+}
+
+static inline int imx290_link_freqs_num(const struct imx290 *imx290)
+{
+	if (imx290->nlanes == 2)
+		return ARRAY_SIZE(imx290_link_freq_2lanes);
+	else
+		return ARRAY_SIZE(imx290_link_freq_4lanes);
+}
+
+/* Mode configs */
+static const struct imx290_mode imx290_modes_2lanes[] = {
+	{
+		.width = 1920,
+		.height = 1080,
+		.hmax = 4400,
+		.link_freq_index = FREQ_INDEX_1080P,
+		.data = imx290_1080p_settings,
+		.data_size = ARRAY_SIZE(imx290_1080p_settings),
+	},
+	{
+		.width = 1280,
+		.height = 720,
+		.hmax = 6600,
+		.link_freq_index = FREQ_INDEX_720P,
+		.data = imx290_720p_settings,
+		.data_size = ARRAY_SIZE(imx290_720p_settings),
+	},
+};
+
+static const struct imx290_mode imx290_modes_4lanes[] = {
+	{
+		.width = 1920,
+		.height = 1080,
+		.hmax = 2200,
+		.link_freq_index = FREQ_INDEX_1080P,
+		.data = imx290_1080p_settings,
+		.data_size = ARRAY_SIZE(imx290_1080p_settings),
+	},
+	{
+		.width = 1280,
+		.height = 720,
+		.hmax = 3300,
+		.link_freq_index = FREQ_INDEX_720P,
+		.data = imx290_720p_settings,
+		.data_size = ARRAY_SIZE(imx290_720p_settings),
+	},
+};
+
+static inline const struct imx290_mode *imx290_modes_ptr(const struct imx290 *imx290)
+{
+	if (imx290->nlanes == 2)
+		return imx290_modes_2lanes;
+	else
+		return imx290_modes_4lanes;
+}
+
+static inline int imx290_modes_num(const struct imx290 *imx290)
+{
+	if (imx290->nlanes == 2)
+		return ARRAY_SIZE(imx290_modes_2lanes);
+	else
+		return ARRAY_SIZE(imx290_modes_4lanes);
+}
+
+static inline struct imx290 *to_imx290(struct v4l2_subdev *_sd)
+{
+	return container_of(_sd, struct imx290, sd);
+}
+
+static int __always_unused imx290_read(struct imx290 *imx290, u32 addr, u32 *value)
+{
+	u8 data[3] = { 0, 0, 0 };
+	int ret;
+
+	ret = regmap_raw_read(imx290->regmap, addr & IMX290_REG_ADDR_MASK,
+			      data, (addr >> IMX290_REG_SIZE_SHIFT) & 3);
+	if (ret < 0) {
+		dev_err(imx290->dev, "%u-bit read from 0x%04x failed: %d\n",
+			 ((addr >> IMX290_REG_SIZE_SHIFT) & 3) * 8,
+			 addr & IMX290_REG_ADDR_MASK, ret);
+		return ret;
+	}
+
+	*value = (data[2] << 16) | (data[1] << 8) | data[0];
+	return 0;
+}
+
+static int imx290_write(struct imx290 *imx290, u32 addr, u32 value, int *err)
+{
+	u8 data[3] = { value & 0xff, (value >> 8) & 0xff, value >> 16 };
+	int ret;
+
+	if (err && *err)
+		return *err;
+
+	ret = regmap_raw_write(imx290->regmap, addr & IMX290_REG_ADDR_MASK,
+			       data, (addr >> IMX290_REG_SIZE_SHIFT) & 3);
+	if (ret < 0) {
+		dev_err(imx290->dev, "%u-bit write to 0x%04x failed: %d\n",
+			 ((addr >> IMX290_REG_SIZE_SHIFT) & 3) * 8,
+			 addr & IMX290_REG_ADDR_MASK, ret);
+		if (err)
+			*err = ret;
+	}
+
+	return ret;
+}
+
+static int imx290_set_register_array(struct imx290 *imx290,
+				     const struct imx290_regval *settings,
+				     unsigned int num_settings)
+{
+	unsigned int i;
+	int ret;
+
+	for (i = 0; i < num_settings; ++i, ++settings) {
+		ret = imx290_write(imx290, settings->reg, settings->val, NULL);
+		if (ret < 0)
+			return ret;
+	}
+
+	/* Provide 10ms settle time */
+	usleep_range(10000, 11000);
+
+	return 0;
+}
+
+/* Stop streaming */
+static int imx290_stop_streaming(struct imx290 *imx290)
+{
+	int ret = 0;
+
+	imx290_write(imx290, IMX290_STANDBY, 0x01, &ret);
+
+	msleep(30);
+
+	return imx290_write(imx290, IMX290_XMSTA, 0x01, &ret);
+}
+
+static int imx290_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct imx290 *imx290 = container_of(ctrl->handler,
+					     struct imx290, ctrls);
+	int ret = 0;
+
+	/* V4L2 controls values will be applied only when power is already up */
+	if (!pm_runtime_get_if_in_use(imx290->dev))
+		return 0;
+
+	switch (ctrl->id) {
+	case V4L2_CID_ANALOGUE_GAIN:
+		ret = imx290_write(imx290, IMX290_GAIN, ctrl->val, NULL);
+		break;
+
+	case V4L2_CID_EXPOSURE:
+		ret = imx290_write(imx290, IMX290_SHS1,
+				   IMX290_VMAX_DEFAULT - ctrl->val - 1, NULL);
+		break;
+
+	case V4L2_CID_TEST_PATTERN:
+		if (ctrl->val) {
+			imx290_write(imx290, IMX290_BLKLEVEL, 0, &ret);
+			usleep_range(10000, 11000);
+			imx290_write(imx290, IMX290_PGCTRL,
+				     (u8)(IMX290_PGCTRL_REGEN |
+				     IMX290_PGCTRL_THRU |
+				     IMX290_PGCTRL_MODE(ctrl->val)), &ret);
+		} else {
+			imx290_write(imx290, IMX290_PGCTRL, 0x00, &ret);
+			usleep_range(10000, 11000);
+			if (imx290->bpp == 10)
+				imx290_write(imx290, IMX290_BLKLEVEL, 0x3c,
+					     &ret);
+			else /* 12 bits per pixel */
+				imx290_write(imx290, IMX290_BLKLEVEL, 0xf0,
+					     &ret);
+		}
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	pm_runtime_put(imx290->dev);
+
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops imx290_ctrl_ops = {
+	.s_ctrl = imx290_set_ctrl,
+};
+
+static struct v4l2_mbus_framefmt *
+imx290_get_pad_format(struct imx290 *imx290, struct v4l2_subdev_state *state,
+		      u32 which)
+{
+	if (which == V4L2_SUBDEV_FORMAT_ACTIVE)
+		return &imx290->current_format;
+	else
+		return v4l2_subdev_get_try_format(&imx290->sd, state, 0);
+}
+
+static int imx290_enum_mbus_code(struct v4l2_subdev *sd,
+				 struct v4l2_subdev_state *sd_state,
+				 struct v4l2_subdev_mbus_code_enum *code)
+{
+	if (code->index >= ARRAY_SIZE(imx290_formats))
+		return -EINVAL;
+
+	code->code = imx290_formats[code->index].code;
+
+	return 0;
+}
+
+static int imx290_enum_frame_size(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_frame_size_enum *fse)
+{
+	const struct imx290 *imx290 = to_imx290(sd);
+	const struct imx290_mode *imx290_modes = imx290_modes_ptr(imx290);
+
+	if ((fse->code != imx290_formats[0].code) &&
+	    (fse->code != imx290_formats[1].code))
+		return -EINVAL;
+
+	if (fse->index >= imx290_modes_num(imx290))
+		return -EINVAL;
+
+	fse->min_width = imx290_modes[fse->index].width;
+	fse->max_width = imx290_modes[fse->index].width;
+	fse->min_height = imx290_modes[fse->index].height;
+	fse->max_height = imx290_modes[fse->index].height;
+
+	return 0;
+}
+
+static int imx290_get_fmt(struct v4l2_subdev *sd,
+			  struct v4l2_subdev_state *sd_state,
+			  struct v4l2_subdev_format *fmt)
+{
+	struct imx290 *imx290 = to_imx290(sd);
+	struct v4l2_mbus_framefmt *framefmt;
+
+	mutex_lock(&imx290->lock);
+
+	framefmt = imx290_get_pad_format(imx290, sd_state, fmt->which);
+	fmt->format = *framefmt;
+
+	mutex_unlock(&imx290->lock);
+
+	return 0;
+}
+
+static inline u8 imx290_get_link_freq_index(struct imx290 *imx290)
+{
+	return imx290->current_mode->link_freq_index;
+}
+
+static s64 imx290_get_link_freq(struct imx290 *imx290)
+{
+	u8 index = imx290_get_link_freq_index(imx290);
+
+	return *(imx290_link_freqs_ptr(imx290) + index);
+}
+
+static u64 imx290_calc_pixel_rate(struct imx290 *imx290)
+{
+	s64 link_freq = imx290_get_link_freq(imx290);
+	u8 nlanes = imx290->nlanes;
+	u64 pixel_rate;
+
+	/* pixel rate = link_freq * 2 * nr_of_lanes / bits_per_sample */
+	pixel_rate = link_freq * 2 * nlanes;
+	do_div(pixel_rate, imx290->bpp);
+	return pixel_rate;
+}
+
+static int imx290_set_fmt(struct v4l2_subdev *sd,
+			  struct v4l2_subdev_state *sd_state,
+			  struct v4l2_subdev_format *fmt)
+{
+	struct imx290 *imx290 = to_imx290(sd);
+	const struct imx290_mode *mode;
+	struct v4l2_mbus_framefmt *format;
+	unsigned int i;
+
+	mutex_lock(&imx290->lock);
+
+	mode = v4l2_find_nearest_size(imx290_modes_ptr(imx290),
+				      imx290_modes_num(imx290), width, height,
+				      fmt->format.width, fmt->format.height);
+
+	fmt->format.width = mode->width;
+	fmt->format.height = mode->height;
+
+	for (i = 0; i < ARRAY_SIZE(imx290_formats); i++)
+		if (imx290_formats[i].code == fmt->format.code)
+			break;
+
+	if (i >= ARRAY_SIZE(imx290_formats))
+		i = 0;
+
+	fmt->format.code = imx290_formats[i].code;
+	fmt->format.field = V4L2_FIELD_NONE;
+
+	format = imx290_get_pad_format(imx290, sd_state, fmt->which);
+
+	if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
+		imx290->current_mode = mode;
+		imx290->bpp = imx290_formats[i].bpp;
+
+		if (imx290->link_freq)
+			__v4l2_ctrl_s_ctrl(imx290->link_freq,
+					   imx290_get_link_freq_index(imx290));
+		if (imx290->pixel_rate)
+			__v4l2_ctrl_s_ctrl_int64(imx290->pixel_rate,
+						 imx290_calc_pixel_rate(imx290));
+
+		if (imx290->hblank) {
+			unsigned int hblank = mode->hmax - mode->width;
+
+			__v4l2_ctrl_modify_range(imx290->hblank, hblank, hblank,
+						 1, hblank);
+		}
+
+		if (imx290->vblank) {
+			unsigned int vblank = IMX290_VMAX_DEFAULT - mode->height;
+
+			__v4l2_ctrl_modify_range(imx290->vblank, vblank, vblank,
+						 1, vblank);
+		}
+	}
+
+	*format = fmt->format;
+
+	mutex_unlock(&imx290->lock);
+
+	return 0;
+}
+
+static int imx290_get_selection(struct v4l2_subdev *sd,
+				struct v4l2_subdev_state *sd_state,
+				struct v4l2_subdev_selection *sel)
+{
+	struct imx290 *imx290 = to_imx290(sd);
+	struct v4l2_mbus_framefmt *format;
+
+	switch (sel->target) {
+	case V4L2_SEL_TGT_CROP: {
+		format = imx290_get_pad_format(imx290, sd_state, sel->which);
+
+		mutex_lock(&imx290->lock);
+
+		sel->r.top = IMX920_PIXEL_ARRAY_MARGIN_TOP
+			   + (IMX290_PIXEL_ARRAY_RECORDING_HEIGHT - format->height) / 2;
+		sel->r.left = IMX920_PIXEL_ARRAY_MARGIN_LEFT
+			    + (IMX290_PIXEL_ARRAY_RECORDING_WIDTH - format->width) / 2;
+		sel->r.width = format->width;
+		sel->r.height = format->height;
+
+		mutex_unlock(&imx290->lock);
+		return 0;
+	}
+
+	case V4L2_SEL_TGT_NATIVE_SIZE:
+	case V4L2_SEL_TGT_CROP_BOUNDS:
+		sel->r.top = 0;
+		sel->r.left = 0;
+		sel->r.width = IMX290_PIXEL_ARRAY_WIDTH;
+		sel->r.height = IMX290_PIXEL_ARRAY_HEIGHT;
+
+		return 0;
+
+	case V4L2_SEL_TGT_CROP_DEFAULT:
+		sel->r.top = IMX920_PIXEL_ARRAY_MARGIN_TOP;
+		sel->r.left = IMX920_PIXEL_ARRAY_MARGIN_LEFT;
+		sel->r.width = IMX290_PIXEL_ARRAY_RECORDING_WIDTH;
+		sel->r.height = IMX290_PIXEL_ARRAY_RECORDING_HEIGHT;
+
+		return 0;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int imx290_entity_init_cfg(struct v4l2_subdev *subdev,
+				  struct v4l2_subdev_state *sd_state)
+{
+	struct v4l2_subdev_format fmt = { 0 };
+
+	fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
+	fmt.format.width = 1920;
+	fmt.format.height = 1080;
+
+	imx290_set_fmt(subdev, sd_state, &fmt);
+
+	return 0;
+}
+
+static int imx290_write_current_format(struct imx290 *imx290)
+{
+	int ret;
+
+	switch (imx290->current_format.code) {
+	case MEDIA_BUS_FMT_SRGGB10_1X10:
+		ret = imx290_set_register_array(imx290, imx290_10bit_settings,
+						ARRAY_SIZE(
+							imx290_10bit_settings));
+		if (ret < 0) {
+			dev_err(imx290->dev, "Could not set format registers\n");
+			return ret;
+		}
+		break;
+	case MEDIA_BUS_FMT_SRGGB12_1X12:
+		ret = imx290_set_register_array(imx290, imx290_12bit_settings,
+						ARRAY_SIZE(
+							imx290_12bit_settings));
+		if (ret < 0) {
+			dev_err(imx290->dev, "Could not set format registers\n");
+			return ret;
+		}
+		break;
+	default:
+		dev_err(imx290->dev, "Unknown pixel format\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Start streaming */
+static int imx290_start_streaming(struct imx290 *imx290)
+{
+	int ret;
+
+	/* Set init register settings */
+	ret = imx290_set_register_array(imx290, imx290_global_init_settings,
+					ARRAY_SIZE(
+						imx290_global_init_settings));
+	if (ret < 0) {
+		dev_err(imx290->dev, "Could not set init registers\n");
+		return ret;
+	}
+
+	/* Apply the register values related to current frame format */
+	ret = imx290_write_current_format(imx290);
+	if (ret < 0) {
+		dev_err(imx290->dev, "Could not set frame format\n");
+		return ret;
+	}
+
+	/* Apply default values of current mode */
+	ret = imx290_set_register_array(imx290, imx290->current_mode->data,
+					imx290->current_mode->data_size);
+	if (ret < 0) {
+		dev_err(imx290->dev, "Could not set current mode\n");
+		return ret;
+	}
+
+	ret = imx290_write(imx290, IMX290_HMAX, imx290->current_mode->hmax,
+			   NULL);
+	if (ret)
+		return ret;
+
+	/* Apply customized values from user */
+	ret = v4l2_ctrl_handler_setup(imx290->sd.ctrl_handler);
+	if (ret) {
+		dev_err(imx290->dev, "Could not sync v4l2 controls\n");
+		return ret;
+	}
+
+	imx290_write(imx290, IMX290_STANDBY, 0x00, &ret);
+
+	msleep(30);
+
+	/* Start streaming */
+	return imx290_write(imx290, IMX290_XMSTA, 0x00, &ret);
+}
+
+static int imx290_set_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct imx290 *imx290 = to_imx290(sd);
+	int ret = 0;
+
+	if (enable) {
+		ret = pm_runtime_resume_and_get(imx290->dev);
+		if (ret < 0)
+			goto unlock_and_return;
+
+		ret = imx290_start_streaming(imx290);
+		if (ret) {
+			dev_err(imx290->dev, "Start stream failed\n");
+			pm_runtime_put(imx290->dev);
+			goto unlock_and_return;
+		}
+	} else {
+		imx290_stop_streaming(imx290);
+		pm_runtime_put(imx290->dev);
+	}
+
+unlock_and_return:
+
+	return ret;
+}
+
+static int imx290_get_regulators(struct device *dev, struct imx290 *imx290)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(imx290->supplies); i++)
+		imx290->supplies[i].supply = imx290_supply_name[i];
+
+	return devm_regulator_bulk_get(dev, ARRAY_SIZE(imx290->supplies),
+				       imx290->supplies);
+}
+
+static int imx290_set_data_lanes(struct imx290 *imx290)
+{
+	int ret = 0, laneval, frsel;
+
+	switch (imx290->nlanes) {
+	case 2:
+		laneval = 0x01;
+		frsel = 0x02;
+		break;
+	case 4:
+		laneval = 0x03;
+		frsel = 0x01;
+		break;
+	default:
+		/*
+		 * We should never hit this since the data lane count is
+		 * validated in probe itself
+		 */
+		dev_err(imx290->dev, "Lane configuration not supported\n");
+		return -EINVAL;
+	}
+
+	imx290_write(imx290, IMX290_PHY_LANE_NUM, laneval, &ret);
+	imx290_write(imx290, IMX290_CSI_LANE_MODE, laneval, &ret);
+	imx290_write(imx290, IMX290_FR_FDG_SEL, frsel, &ret);
+
+	return ret;
+}
+
+static int imx290_power_on(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct imx290 *imx290 = to_imx290(sd);
+	int ret;
+
+	ret = clk_prepare_enable(imx290->xclk);
+	if (ret) {
+		dev_err(dev, "Failed to enable clock\n");
+		return ret;
+	}
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(imx290->supplies),
+				    imx290->supplies);
+	if (ret) {
+		dev_err(dev, "Failed to enable regulators\n");
+		clk_disable_unprepare(imx290->xclk);
+		return ret;
+	}
+
+	usleep_range(1, 2);
+	gpiod_set_value_cansleep(imx290->rst_gpio, 0);
+	usleep_range(30000, 31000);
+
+	/* Set data lane count */
+	imx290_set_data_lanes(imx290);
+
+	return 0;
+}
+
+static int imx290_power_off(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct imx290 *imx290 = to_imx290(sd);
+
+	clk_disable_unprepare(imx290->xclk);
+	gpiod_set_value_cansleep(imx290->rst_gpio, 1);
+	regulator_bulk_disable(ARRAY_SIZE(imx290->supplies), imx290->supplies);
+
+	return 0;
+}
+
+static const struct dev_pm_ops imx290_pm_ops = {
+	SET_RUNTIME_PM_OPS(imx290_power_off, imx290_power_on, NULL)
+};
+
+static const struct v4l2_subdev_video_ops imx290_video_ops = {
+	.s_stream = imx290_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops imx290_pad_ops = {
+	.init_cfg = imx290_entity_init_cfg,
+	.enum_mbus_code = imx290_enum_mbus_code,
+	.enum_frame_size = imx290_enum_frame_size,
+	.get_fmt = imx290_get_fmt,
+	.set_fmt = imx290_set_fmt,
+	.get_selection = imx290_get_selection,
+};
+
+static const struct v4l2_subdev_ops imx290_subdev_ops = {
+	.video = &imx290_video_ops,
+	.pad = &imx290_pad_ops,
+};
+
+static const struct media_entity_operations imx290_subdev_entity_ops = {
+	.link_validate = v4l2_subdev_link_validate,
+};
+
+static int imx290_ctrl_init(struct imx290 *imx290)
+{
+	struct v4l2_fwnode_device_properties props;
+	unsigned int blank;
+	int ret;
+
+	ret = v4l2_fwnode_device_parse(imx290->dev, &props);
+	if (ret < 0)
+		return ret;
+
+	v4l2_ctrl_handler_init(&imx290->ctrls, 9);
+	imx290->ctrls.lock = &imx290->lock;
+
+	/*
+	 * The sensor has an analog gain and a digital gain, both controlled
+	 * through a single gain value, expressed in 0.3dB increments. Values
+	 * from 0.0dB (0) to 30.0dB (100) apply analog gain only, higher values
+	 * up to 72.0dB (240) add further digital gain. Limit the range to
+	 * analog gain only, support for digital gain can be added separately
+	 * if needed.
+	 *
+	 * The IMX327 and IMX462 are largely compatible with the IMX290, but
+	 * have an analog gain range of 0.0dB to 29.4dB and 42dB of digital
+	 * gain. When support for those sensors gets added to the driver, the
+	 * gain control should be adjusted accordingly.
+	 */
+	v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+			  V4L2_CID_ANALOGUE_GAIN, 0, 100, 1, 0);
+
+	v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+			  V4L2_CID_EXPOSURE, 1, IMX290_VMAX_DEFAULT - 2, 1,
+			  IMX290_VMAX_DEFAULT - 2);
+
+	imx290->link_freq =
+		v4l2_ctrl_new_int_menu(&imx290->ctrls, &imx290_ctrl_ops,
+				       V4L2_CID_LINK_FREQ,
+				       imx290_link_freqs_num(imx290) - 1, 0,
+				       imx290_link_freqs_ptr(imx290));
+	if (imx290->link_freq)
+		imx290->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+	imx290->pixel_rate = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+					       V4L2_CID_PIXEL_RATE,
+					       1, INT_MAX, 1,
+					       imx290_calc_pixel_rate(imx290));
+
+	v4l2_ctrl_new_std_menu_items(&imx290->ctrls, &imx290_ctrl_ops,
+				     V4L2_CID_TEST_PATTERN,
+				     ARRAY_SIZE(imx290_test_pattern_menu) - 1,
+				     0, 0, imx290_test_pattern_menu);
+
+	blank = imx290->current_mode->hmax - imx290->current_mode->width;
+	imx290->hblank = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+					   V4L2_CID_HBLANK, blank, blank, 1,
+					   blank);
+	if (imx290->hblank)
+		imx290->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+	blank = IMX290_VMAX_DEFAULT - imx290->current_mode->height;
+	imx290->vblank = v4l2_ctrl_new_std(&imx290->ctrls, &imx290_ctrl_ops,
+					   V4L2_CID_VBLANK, blank, blank, 1,
+					   blank);
+	if (imx290->vblank)
+		imx290->vblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+	v4l2_ctrl_new_fwnode_properties(&imx290->ctrls, &imx290_ctrl_ops,
+					&props);
+
+	imx290->sd.ctrl_handler = &imx290->ctrls;
+
+	if (imx290->ctrls.error) {
+		ret = imx290->ctrls.error;
+		v4l2_ctrl_handler_free(&imx290->ctrls);
+		return ret;
+	}
+
+	return 0;
+}
+
+/*
+ * Returns 0 if all link frequencies used by the driver for the given number
+ * of MIPI data lanes are mentioned in the device tree, or the value of the
+ * first missing frequency otherwise.
+ */
+static s64 imx290_check_link_freqs(const struct imx290 *imx290,
+				   const struct v4l2_fwnode_endpoint *ep)
+{
+	int i, j;
+	const s64 *freqs = imx290_link_freqs_ptr(imx290);
+	int freqs_count = imx290_link_freqs_num(imx290);
+
+	for (i = 0; i < freqs_count; i++) {
+		for (j = 0; j < ep->nr_of_link_frequencies; j++)
+			if (freqs[i] == ep->link_frequencies[j])
+				break;
+		if (j == ep->nr_of_link_frequencies)
+			return freqs[i];
+	}
+	return 0;
+}
+
+static int imx290_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct fwnode_handle *endpoint;
+	/* Only CSI2 is supported for now: */
+	struct v4l2_fwnode_endpoint ep = {
+		.bus_type = V4L2_MBUS_CSI2_DPHY
+	};
+	struct imx290 *imx290;
+	u32 xclk_freq;
+	s64 fq;
+	int ret;
+
+	imx290 = devm_kzalloc(dev, sizeof(*imx290), GFP_KERNEL);
+	if (!imx290)
+		return -ENOMEM;
+
+	imx290->dev = dev;
+	imx290->regmap = devm_regmap_init_i2c(client, &imx290_regmap_config);
+	if (IS_ERR(imx290->regmap)) {
+		dev_err(dev, "Unable to initialize I2C\n");
+		return -ENODEV;
+	}
+
+	endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
+	if (!endpoint) {
+		dev_err(dev, "Endpoint node not found\n");
+		return -EINVAL;
+	}
+
+	ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep);
+	fwnode_handle_put(endpoint);
+	if (ret == -ENXIO) {
+		dev_err(dev, "Unsupported bus type, should be CSI2\n");
+		goto free_err;
+	} else if (ret) {
+		dev_err(dev, "Parsing endpoint node failed\n");
+		goto free_err;
+	}
+
+	/* Get number of data lanes */
+	imx290->nlanes = ep.bus.mipi_csi2.num_data_lanes;
+	if (imx290->nlanes != 2 && imx290->nlanes != 4) {
+		dev_err(dev, "Invalid data lanes: %d\n", imx290->nlanes);
+		ret = -EINVAL;
+		goto free_err;
+	}
+
+	dev_dbg(dev, "Using %u data lanes\n", imx290->nlanes);
+
+	if (!ep.nr_of_link_frequencies) {
+		dev_err(dev, "link-frequency property not found in DT\n");
+		ret = -EINVAL;
+		goto free_err;
+	}
+
+	/* Check that link frequences for all the modes are in device tree */
+	fq = imx290_check_link_freqs(imx290, &ep);
+	if (fq) {
+		dev_err(dev, "Link frequency of %lld is not supported\n", fq);
+		ret = -EINVAL;
+		goto free_err;
+	}
+
+	/* get system clock (xclk) */
+	imx290->xclk = devm_clk_get(dev, "xclk");
+	if (IS_ERR(imx290->xclk)) {
+		dev_err(dev, "Could not get xclk");
+		ret = PTR_ERR(imx290->xclk);
+		goto free_err;
+	}
+
+	ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency",
+				       &xclk_freq);
+	if (ret) {
+		dev_err(dev, "Could not get xclk frequency\n");
+		goto free_err;
+	}
+
+	/* external clock must be 37.125 MHz */
+	if (xclk_freq != 37125000) {
+		dev_err(dev, "External clock frequency %u is not supported\n",
+			xclk_freq);
+		ret = -EINVAL;
+		goto free_err;
+	}
+
+	ret = clk_set_rate(imx290->xclk, xclk_freq);
+	if (ret) {
+		dev_err(dev, "Could not set xclk frequency\n");
+		goto free_err;
+	}
+
+	ret = imx290_get_regulators(dev, imx290);
+	if (ret < 0) {
+		dev_err(dev, "Cannot get regulators\n");
+		goto free_err;
+	}
+
+	imx290->rst_gpio = devm_gpiod_get_optional(dev, "reset",
+						   GPIOD_OUT_HIGH);
+	if (IS_ERR(imx290->rst_gpio)) {
+		dev_err(dev, "Cannot get reset gpio\n");
+		ret = PTR_ERR(imx290->rst_gpio);
+		goto free_err;
+	}
+
+	mutex_init(&imx290->lock);
+
+	/*
+	 * Initialize the frame format. In particular, imx290->current_mode
+	 * and imx290->bpp are set to defaults: imx290_calc_pixel_rate() call
+	 * below relies on these fields.
+	 */
+	imx290_entity_init_cfg(&imx290->sd, NULL);
+
+	ret = imx290_ctrl_init(imx290);
+	if (ret < 0) {
+		dev_err(dev, "Control initialization error %d\n", ret);
+		goto free_mutex;
+	}
+
+	v4l2_i2c_subdev_init(&imx290->sd, client, &imx290_subdev_ops);
+	imx290->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	imx290->sd.dev = &client->dev;
+	imx290->sd.entity.ops = &imx290_subdev_entity_ops;
+	imx290->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+
+	imx290->pad.flags = MEDIA_PAD_FL_SOURCE;
+	ret = media_entity_pads_init(&imx290->sd.entity, 1, &imx290->pad);
+	if (ret < 0) {
+		dev_err(dev, "Could not register media entity\n");
+		goto free_ctrl;
+	}
+
+	ret = v4l2_async_register_subdev(&imx290->sd);
+	if (ret < 0) {
+		dev_err(dev, "Could not register v4l2 device\n");
+		goto free_entity;
+	}
+
+	/* Power on the device to match runtime PM state below */
+	ret = imx290_power_on(dev);
+	if (ret < 0) {
+		dev_err(dev, "Could not power on the device\n");
+		goto free_entity;
+	}
+
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+	pm_runtime_idle(dev);
+
+	v4l2_fwnode_endpoint_free(&ep);
+
+	return 0;
+
+free_entity:
+	media_entity_cleanup(&imx290->sd.entity);
+free_ctrl:
+	v4l2_ctrl_handler_free(&imx290->ctrls);
+free_mutex:
+	mutex_destroy(&imx290->lock);
+free_err:
+	v4l2_fwnode_endpoint_free(&ep);
+
+	return ret;
+}
+
+static void imx290_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct imx290 *imx290 = to_imx290(sd);
+
+	v4l2_async_unregister_subdev(sd);
+	media_entity_cleanup(&sd->entity);
+	v4l2_ctrl_handler_free(sd->ctrl_handler);
+
+	mutex_destroy(&imx290->lock);
+
+	pm_runtime_disable(imx290->dev);
+	if (!pm_runtime_status_suspended(imx290->dev))
+		imx290_power_off(imx290->dev);
+	pm_runtime_set_suspended(imx290->dev);
+}
+
+static const struct of_device_id imx290_of_match[] = {
+	{ .compatible = "sony,imx290" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx290_of_match);
+
+static struct i2c_driver imx290_i2c_driver = {
+	.probe_new  = imx290_probe,
+	.remove = imx290_remove,
+	.driver = {
+		.name  = "imx290",
+		.pm = &imx290_pm_ops,
+		.of_match_table = of_match_ptr(imx290_of_match),
+	},
+};
+
+module_i2c_driver(imx290_i2c_driver);
+
+MODULE_DESCRIPTION("Sony IMX290 CMOS Image Sensor Driver");
+MODULE_AUTHOR("FRAMOS GmbH");
+MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>");
+MODULE_LICENSE("GPL v2");