From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@linux-foundation.org>
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/imx219.c | 1605 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 1605 insertions(+)
 create mode 100644 drivers/media/i2c/imx219.c

(limited to 'drivers/media/i2c/imx219.c')

diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
new file mode 100644
index 000000000..77bd79a59
--- /dev/null
+++ b/drivers/media/i2c/imx219.c
@@ -0,0 +1,1605 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * A V4L2 driver for Sony IMX219 cameras.
+ * Copyright (C) 2019, Raspberry Pi (Trading) Ltd
+ *
+ * Based on Sony imx258 camera driver
+ * Copyright (C) 2018 Intel Corporation
+ *
+ * DT / fwnode changes, and regulator / GPIO control taken from imx214 driver
+ * Copyright 2018 Qtechnology A/S
+ *
+ * Flip handling taken from the Sony IMX319 driver.
+ * Copyright (C) 2018 Intel Corporation
+ *
+ */
+
+#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/regulator/consumer.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-mediabus.h>
+#include <asm/unaligned.h>
+
+#define IMX219_REG_VALUE_08BIT		1
+#define IMX219_REG_VALUE_16BIT		2
+
+#define IMX219_REG_MODE_SELECT		0x0100
+#define IMX219_MODE_STANDBY		0x00
+#define IMX219_MODE_STREAMING		0x01
+
+/* Chip ID */
+#define IMX219_REG_CHIP_ID		0x0000
+#define IMX219_CHIP_ID			0x0219
+
+/* External clock frequency is 24.0M */
+#define IMX219_XCLK_FREQ		24000000
+
+/* Pixel rate is fixed at 182.4M for all the modes */
+#define IMX219_PIXEL_RATE		182400000
+
+#define IMX219_DEFAULT_LINK_FREQ	456000000
+
+/* V_TIMING internal */
+#define IMX219_REG_VTS			0x0160
+#define IMX219_VTS_15FPS		0x0dc6
+#define IMX219_VTS_30FPS_1080P		0x06e3
+#define IMX219_VTS_30FPS_BINNED		0x06e3
+#define IMX219_VTS_30FPS_640x480	0x06e3
+#define IMX219_VTS_MAX			0xffff
+
+#define IMX219_VBLANK_MIN		4
+
+/*Frame Length Line*/
+#define IMX219_FLL_MIN			0x08a6
+#define IMX219_FLL_MAX			0xffff
+#define IMX219_FLL_STEP			1
+#define IMX219_FLL_DEFAULT		0x0c98
+
+/* HBLANK control - read only */
+#define IMX219_PPL_DEFAULT		3448
+
+/* Exposure control */
+#define IMX219_REG_EXPOSURE		0x015a
+#define IMX219_EXPOSURE_MIN		4
+#define IMX219_EXPOSURE_STEP		1
+#define IMX219_EXPOSURE_DEFAULT		0x640
+#define IMX219_EXPOSURE_MAX		65535
+
+/* Analog gain control */
+#define IMX219_REG_ANALOG_GAIN		0x0157
+#define IMX219_ANA_GAIN_MIN		0
+#define IMX219_ANA_GAIN_MAX		232
+#define IMX219_ANA_GAIN_STEP		1
+#define IMX219_ANA_GAIN_DEFAULT		0x0
+
+/* Digital gain control */
+#define IMX219_REG_DIGITAL_GAIN		0x0158
+#define IMX219_DGTL_GAIN_MIN		0x0100
+#define IMX219_DGTL_GAIN_MAX		0x0fff
+#define IMX219_DGTL_GAIN_DEFAULT	0x0100
+#define IMX219_DGTL_GAIN_STEP		1
+
+#define IMX219_REG_ORIENTATION		0x0172
+
+/* Test Pattern Control */
+#define IMX219_REG_TEST_PATTERN		0x0600
+#define IMX219_TEST_PATTERN_DISABLE	0
+#define IMX219_TEST_PATTERN_SOLID_COLOR	1
+#define IMX219_TEST_PATTERN_COLOR_BARS	2
+#define IMX219_TEST_PATTERN_GREY_COLOR	3
+#define IMX219_TEST_PATTERN_PN9		4
+
+/* Test pattern colour components */
+#define IMX219_REG_TESTP_RED		0x0602
+#define IMX219_REG_TESTP_GREENR		0x0604
+#define IMX219_REG_TESTP_BLUE		0x0606
+#define IMX219_REG_TESTP_GREENB		0x0608
+#define IMX219_TESTP_COLOUR_MIN		0
+#define IMX219_TESTP_COLOUR_MAX		0x03ff
+#define IMX219_TESTP_COLOUR_STEP	1
+#define IMX219_TESTP_RED_DEFAULT	IMX219_TESTP_COLOUR_MAX
+#define IMX219_TESTP_GREENR_DEFAULT	0
+#define IMX219_TESTP_BLUE_DEFAULT	0
+#define IMX219_TESTP_GREENB_DEFAULT	0
+
+/* IMX219 native and active pixel array size. */
+#define IMX219_NATIVE_WIDTH		3296U
+#define IMX219_NATIVE_HEIGHT		2480U
+#define IMX219_PIXEL_ARRAY_LEFT		8U
+#define IMX219_PIXEL_ARRAY_TOP		8U
+#define IMX219_PIXEL_ARRAY_WIDTH	3280U
+#define IMX219_PIXEL_ARRAY_HEIGHT	2464U
+
+struct imx219_reg {
+	u16 address;
+	u8 val;
+};
+
+struct imx219_reg_list {
+	unsigned int num_of_regs;
+	const struct imx219_reg *regs;
+};
+
+/* Mode : resolution and related config&values */
+struct imx219_mode {
+	/* Frame width */
+	unsigned int width;
+	/* Frame height */
+	unsigned int height;
+
+	/* Analog crop rectangle. */
+	struct v4l2_rect crop;
+
+	/* V-timing */
+	unsigned int vts_def;
+
+	/* Default register values */
+	struct imx219_reg_list reg_list;
+};
+
+/*
+ * Register sets lifted off the i2C interface from the Raspberry Pi firmware
+ * driver.
+ * 3280x2464 = mode 2, 1920x1080 = mode 1, 1640x1232 = mode 4, 640x480 = mode 7.
+ */
+static const struct imx219_reg mode_3280x2464_regs[] = {
+	{0x0100, 0x00},
+	{0x30eb, 0x0c},
+	{0x30eb, 0x05},
+	{0x300a, 0xff},
+	{0x300b, 0xff},
+	{0x30eb, 0x05},
+	{0x30eb, 0x09},
+	{0x0114, 0x01},
+	{0x0128, 0x00},
+	{0x012a, 0x18},
+	{0x012b, 0x00},
+	{0x0164, 0x00},
+	{0x0165, 0x00},
+	{0x0166, 0x0c},
+	{0x0167, 0xcf},
+	{0x0168, 0x00},
+	{0x0169, 0x00},
+	{0x016a, 0x09},
+	{0x016b, 0x9f},
+	{0x016c, 0x0c},
+	{0x016d, 0xd0},
+	{0x016e, 0x09},
+	{0x016f, 0xa0},
+	{0x0170, 0x01},
+	{0x0171, 0x01},
+	{0x0174, 0x00},
+	{0x0175, 0x00},
+	{0x0301, 0x05},
+	{0x0303, 0x01},
+	{0x0304, 0x03},
+	{0x0305, 0x03},
+	{0x0306, 0x00},
+	{0x0307, 0x39},
+	{0x030b, 0x01},
+	{0x030c, 0x00},
+	{0x030d, 0x72},
+	{0x0624, 0x0c},
+	{0x0625, 0xd0},
+	{0x0626, 0x09},
+	{0x0627, 0xa0},
+	{0x455e, 0x00},
+	{0x471e, 0x4b},
+	{0x4767, 0x0f},
+	{0x4750, 0x14},
+	{0x4540, 0x00},
+	{0x47b4, 0x14},
+	{0x4713, 0x30},
+	{0x478b, 0x10},
+	{0x478f, 0x10},
+	{0x4793, 0x10},
+	{0x4797, 0x0e},
+	{0x479b, 0x0e},
+	{0x0162, 0x0d},
+	{0x0163, 0x78},
+};
+
+static const struct imx219_reg mode_1920_1080_regs[] = {
+	{0x0100, 0x00},
+	{0x30eb, 0x05},
+	{0x30eb, 0x0c},
+	{0x300a, 0xff},
+	{0x300b, 0xff},
+	{0x30eb, 0x05},
+	{0x30eb, 0x09},
+	{0x0114, 0x01},
+	{0x0128, 0x00},
+	{0x012a, 0x18},
+	{0x012b, 0x00},
+	{0x0162, 0x0d},
+	{0x0163, 0x78},
+	{0x0164, 0x02},
+	{0x0165, 0xa8},
+	{0x0166, 0x0a},
+	{0x0167, 0x27},
+	{0x0168, 0x02},
+	{0x0169, 0xb4},
+	{0x016a, 0x06},
+	{0x016b, 0xeb},
+	{0x016c, 0x07},
+	{0x016d, 0x80},
+	{0x016e, 0x04},
+	{0x016f, 0x38},
+	{0x0170, 0x01},
+	{0x0171, 0x01},
+	{0x0174, 0x00},
+	{0x0175, 0x00},
+	{0x0301, 0x05},
+	{0x0303, 0x01},
+	{0x0304, 0x03},
+	{0x0305, 0x03},
+	{0x0306, 0x00},
+	{0x0307, 0x39},
+	{0x030b, 0x01},
+	{0x030c, 0x00},
+	{0x030d, 0x72},
+	{0x0624, 0x07},
+	{0x0625, 0x80},
+	{0x0626, 0x04},
+	{0x0627, 0x38},
+	{0x455e, 0x00},
+	{0x471e, 0x4b},
+	{0x4767, 0x0f},
+	{0x4750, 0x14},
+	{0x4540, 0x00},
+	{0x47b4, 0x14},
+	{0x4713, 0x30},
+	{0x478b, 0x10},
+	{0x478f, 0x10},
+	{0x4793, 0x10},
+	{0x4797, 0x0e},
+	{0x479b, 0x0e},
+};
+
+static const struct imx219_reg mode_1640_1232_regs[] = {
+	{0x0100, 0x00},
+	{0x30eb, 0x0c},
+	{0x30eb, 0x05},
+	{0x300a, 0xff},
+	{0x300b, 0xff},
+	{0x30eb, 0x05},
+	{0x30eb, 0x09},
+	{0x0114, 0x01},
+	{0x0128, 0x00},
+	{0x012a, 0x18},
+	{0x012b, 0x00},
+	{0x0164, 0x00},
+	{0x0165, 0x00},
+	{0x0166, 0x0c},
+	{0x0167, 0xcf},
+	{0x0168, 0x00},
+	{0x0169, 0x00},
+	{0x016a, 0x09},
+	{0x016b, 0x9f},
+	{0x016c, 0x06},
+	{0x016d, 0x68},
+	{0x016e, 0x04},
+	{0x016f, 0xd0},
+	{0x0170, 0x01},
+	{0x0171, 0x01},
+	{0x0174, 0x01},
+	{0x0175, 0x01},
+	{0x0301, 0x05},
+	{0x0303, 0x01},
+	{0x0304, 0x03},
+	{0x0305, 0x03},
+	{0x0306, 0x00},
+	{0x0307, 0x39},
+	{0x030b, 0x01},
+	{0x030c, 0x00},
+	{0x030d, 0x72},
+	{0x0624, 0x06},
+	{0x0625, 0x68},
+	{0x0626, 0x04},
+	{0x0627, 0xd0},
+	{0x455e, 0x00},
+	{0x471e, 0x4b},
+	{0x4767, 0x0f},
+	{0x4750, 0x14},
+	{0x4540, 0x00},
+	{0x47b4, 0x14},
+	{0x4713, 0x30},
+	{0x478b, 0x10},
+	{0x478f, 0x10},
+	{0x4793, 0x10},
+	{0x4797, 0x0e},
+	{0x479b, 0x0e},
+	{0x0162, 0x0d},
+	{0x0163, 0x78},
+};
+
+static const struct imx219_reg mode_640_480_regs[] = {
+	{0x0100, 0x00},
+	{0x30eb, 0x05},
+	{0x30eb, 0x0c},
+	{0x300a, 0xff},
+	{0x300b, 0xff},
+	{0x30eb, 0x05},
+	{0x30eb, 0x09},
+	{0x0114, 0x01},
+	{0x0128, 0x00},
+	{0x012a, 0x18},
+	{0x012b, 0x00},
+	{0x0162, 0x0d},
+	{0x0163, 0x78},
+	{0x0164, 0x03},
+	{0x0165, 0xe8},
+	{0x0166, 0x08},
+	{0x0167, 0xe7},
+	{0x0168, 0x02},
+	{0x0169, 0xf0},
+	{0x016a, 0x06},
+	{0x016b, 0xaf},
+	{0x016c, 0x02},
+	{0x016d, 0x80},
+	{0x016e, 0x01},
+	{0x016f, 0xe0},
+	{0x0170, 0x01},
+	{0x0171, 0x01},
+	{0x0174, 0x03},
+	{0x0175, 0x03},
+	{0x0301, 0x05},
+	{0x0303, 0x01},
+	{0x0304, 0x03},
+	{0x0305, 0x03},
+	{0x0306, 0x00},
+	{0x0307, 0x39},
+	{0x030b, 0x01},
+	{0x030c, 0x00},
+	{0x030d, 0x72},
+	{0x0624, 0x06},
+	{0x0625, 0x68},
+	{0x0626, 0x04},
+	{0x0627, 0xd0},
+	{0x455e, 0x00},
+	{0x471e, 0x4b},
+	{0x4767, 0x0f},
+	{0x4750, 0x14},
+	{0x4540, 0x00},
+	{0x47b4, 0x14},
+	{0x4713, 0x30},
+	{0x478b, 0x10},
+	{0x478f, 0x10},
+	{0x4793, 0x10},
+	{0x4797, 0x0e},
+	{0x479b, 0x0e},
+};
+
+static const struct imx219_reg raw8_framefmt_regs[] = {
+	{0x018c, 0x08},
+	{0x018d, 0x08},
+	{0x0309, 0x08},
+};
+
+static const struct imx219_reg raw10_framefmt_regs[] = {
+	{0x018c, 0x0a},
+	{0x018d, 0x0a},
+	{0x0309, 0x0a},
+};
+
+static const s64 imx219_link_freq_menu[] = {
+	IMX219_DEFAULT_LINK_FREQ,
+};
+
+static const char * const imx219_test_pattern_menu[] = {
+	"Disabled",
+	"Color Bars",
+	"Solid Color",
+	"Grey Color Bars",
+	"PN9"
+};
+
+static const int imx219_test_pattern_val[] = {
+	IMX219_TEST_PATTERN_DISABLE,
+	IMX219_TEST_PATTERN_COLOR_BARS,
+	IMX219_TEST_PATTERN_SOLID_COLOR,
+	IMX219_TEST_PATTERN_GREY_COLOR,
+	IMX219_TEST_PATTERN_PN9,
+};
+
+/* regulator supplies */
+static const char * const imx219_supply_name[] = {
+	/* Supplies can be enabled in any order */
+	"VANA",  /* Analog (2.8V) supply */
+	"VDIG",  /* Digital Core (1.8V) supply */
+	"VDDL",  /* IF (1.2V) supply */
+};
+
+#define IMX219_NUM_SUPPLIES ARRAY_SIZE(imx219_supply_name)
+
+/*
+ * The supported formats.
+ * This table MUST contain 4 entries per format, to cover the various flip
+ * combinations in the order
+ * - no flip
+ * - h flip
+ * - v flip
+ * - h&v flips
+ */
+static const u32 codes[] = {
+	MEDIA_BUS_FMT_SRGGB10_1X10,
+	MEDIA_BUS_FMT_SGRBG10_1X10,
+	MEDIA_BUS_FMT_SGBRG10_1X10,
+	MEDIA_BUS_FMT_SBGGR10_1X10,
+
+	MEDIA_BUS_FMT_SRGGB8_1X8,
+	MEDIA_BUS_FMT_SGRBG8_1X8,
+	MEDIA_BUS_FMT_SGBRG8_1X8,
+	MEDIA_BUS_FMT_SBGGR8_1X8,
+};
+
+/*
+ * Initialisation delay between XCLR low->high and the moment when the sensor
+ * can start capture (i.e. can leave software stanby) must be not less than:
+ *   t4 + max(t5, t6 + <time to initialize the sensor register over I2C>)
+ * where
+ *   t4 is fixed, and is max 200uS,
+ *   t5 is fixed, and is 6000uS,
+ *   t6 depends on the sensor external clock, and is max 32000 clock periods.
+ * As per sensor datasheet, the external clock must be from 6MHz to 27MHz.
+ * So for any acceptable external clock t6 is always within the range of
+ * 1185 to 5333 uS, and is always less than t5.
+ * For this reason this is always safe to wait (t4 + t5) = 6200 uS, then
+ * initialize the sensor over I2C, and then exit the software standby.
+ *
+ * This start-up time can be optimized a bit more, if we start the writes
+ * over I2C after (t4+t6), but before (t4+t5) expires. But then sensor
+ * initialization over I2C may complete before (t4+t5) expires, and we must
+ * ensure that capture is not started before (t4+t5).
+ *
+ * This delay doesn't account for the power supply startup time. If needed,
+ * this should be taken care of via the regulator framework. E.g. in the
+ * case of DT for regulator-fixed one should define the startup-delay-us
+ * property.
+ */
+#define IMX219_XCLR_MIN_DELAY_US	6200
+#define IMX219_XCLR_DELAY_RANGE_US	1000
+
+/* Mode configs */
+static const struct imx219_mode supported_modes[] = {
+	{
+		/* 8MPix 15fps mode */
+		.width = 3280,
+		.height = 2464,
+		.crop = {
+			.left = IMX219_PIXEL_ARRAY_LEFT,
+			.top = IMX219_PIXEL_ARRAY_TOP,
+			.width = 3280,
+			.height = 2464
+		},
+		.vts_def = IMX219_VTS_15FPS,
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_3280x2464_regs),
+			.regs = mode_3280x2464_regs,
+		},
+	},
+	{
+		/* 1080P 30fps cropped */
+		.width = 1920,
+		.height = 1080,
+		.crop = {
+			.left = 688,
+			.top = 700,
+			.width = 1920,
+			.height = 1080
+		},
+		.vts_def = IMX219_VTS_30FPS_1080P,
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_1920_1080_regs),
+			.regs = mode_1920_1080_regs,
+		},
+	},
+	{
+		/* 2x2 binned 30fps mode */
+		.width = 1640,
+		.height = 1232,
+		.crop = {
+			.left = IMX219_PIXEL_ARRAY_LEFT,
+			.top = IMX219_PIXEL_ARRAY_TOP,
+			.width = 3280,
+			.height = 2464
+		},
+		.vts_def = IMX219_VTS_30FPS_BINNED,
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_1640_1232_regs),
+			.regs = mode_1640_1232_regs,
+		},
+	},
+	{
+		/* 640x480 30fps mode */
+		.width = 640,
+		.height = 480,
+		.crop = {
+			.left = 1008,
+			.top = 760,
+			.width = 1280,
+			.height = 960
+		},
+		.vts_def = IMX219_VTS_30FPS_640x480,
+		.reg_list = {
+			.num_of_regs = ARRAY_SIZE(mode_640_480_regs),
+			.regs = mode_640_480_regs,
+		},
+	},
+};
+
+struct imx219 {
+	struct v4l2_subdev sd;
+	struct media_pad pad;
+
+	struct v4l2_mbus_framefmt fmt;
+
+	struct clk *xclk; /* system clock to IMX219 */
+	u32 xclk_freq;
+
+	struct gpio_desc *reset_gpio;
+	struct regulator_bulk_data supplies[IMX219_NUM_SUPPLIES];
+
+	struct v4l2_ctrl_handler ctrl_handler;
+	/* V4L2 Controls */
+	struct v4l2_ctrl *pixel_rate;
+	struct v4l2_ctrl *link_freq;
+	struct v4l2_ctrl *exposure;
+	struct v4l2_ctrl *vflip;
+	struct v4l2_ctrl *hflip;
+	struct v4l2_ctrl *vblank;
+	struct v4l2_ctrl *hblank;
+
+	/* Current mode */
+	const struct imx219_mode *mode;
+
+	/*
+	 * Mutex for serialized access:
+	 * Protect sensor module set pad format and start/stop streaming safely.
+	 */
+	struct mutex mutex;
+
+	/* Streaming on/off */
+	bool streaming;
+};
+
+static inline struct imx219 *to_imx219(struct v4l2_subdev *_sd)
+{
+	return container_of(_sd, struct imx219, sd);
+}
+
+/* Read registers up to 2 at a time */
+static int imx219_read_reg(struct imx219 *imx219, u16 reg, u32 len, u32 *val)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
+	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;
+
+	/* Write register address */
+	msgs[0].addr = client->addr;
+	msgs[0].flags = 0;
+	msgs[0].len = ARRAY_SIZE(addr_buf);
+	msgs[0].buf = addr_buf;
+
+	/* Read data from register */
+	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))
+		return -EIO;
+
+	*val = get_unaligned_be32(data_buf);
+
+	return 0;
+}
+
+/* Write registers up to 2 at a time */
+static int imx219_write_reg(struct imx219 *imx219, u16 reg, u32 len, u32 val)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
+	u8 buf[6];
+
+	if (len > 4)
+		return -EINVAL;
+
+	put_unaligned_be16(reg, buf);
+	put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
+	if (i2c_master_send(client, buf, len + 2) != len + 2)
+		return -EIO;
+
+	return 0;
+}
+
+/* Write a list of registers */
+static int imx219_write_regs(struct imx219 *imx219,
+			     const struct imx219_reg *regs, u32 len)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
+	unsigned int i;
+	int ret;
+
+	for (i = 0; i < len; i++) {
+		ret = imx219_write_reg(imx219, regs[i].address, 1, regs[i].val);
+		if (ret) {
+			dev_err_ratelimited(&client->dev,
+					    "Failed to write reg 0x%4.4x. error = %d\n",
+					    regs[i].address, ret);
+
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+/* Get bayer order based on flip setting. */
+static u32 imx219_get_format_code(struct imx219 *imx219, u32 code)
+{
+	unsigned int i;
+
+	lockdep_assert_held(&imx219->mutex);
+
+	for (i = 0; i < ARRAY_SIZE(codes); i++)
+		if (codes[i] == code)
+			break;
+
+	if (i >= ARRAY_SIZE(codes))
+		i = 0;
+
+	i = (i & ~3) | (imx219->vflip->val ? 2 : 0) |
+	    (imx219->hflip->val ? 1 : 0);
+
+	return codes[i];
+}
+
+static void imx219_set_default_format(struct imx219 *imx219)
+{
+	struct v4l2_mbus_framefmt *fmt;
+
+	fmt = &imx219->fmt;
+	fmt->code = MEDIA_BUS_FMT_SRGGB10_1X10;
+	fmt->colorspace = V4L2_COLORSPACE_SRGB;
+	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+							  fmt->colorspace,
+							  fmt->ycbcr_enc);
+	fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+	fmt->width = supported_modes[0].width;
+	fmt->height = supported_modes[0].height;
+	fmt->field = V4L2_FIELD_NONE;
+}
+
+static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+	struct imx219 *imx219 = to_imx219(sd);
+	struct v4l2_mbus_framefmt *try_fmt =
+		v4l2_subdev_get_try_format(sd, fh->state, 0);
+	struct v4l2_rect *try_crop;
+
+	mutex_lock(&imx219->mutex);
+
+	/* Initialize try_fmt */
+	try_fmt->width = supported_modes[0].width;
+	try_fmt->height = supported_modes[0].height;
+	try_fmt->code = imx219_get_format_code(imx219,
+					       MEDIA_BUS_FMT_SRGGB10_1X10);
+	try_fmt->field = V4L2_FIELD_NONE;
+
+	/* Initialize try_crop rectangle. */
+	try_crop = v4l2_subdev_get_try_crop(sd, fh->state, 0);
+	try_crop->top = IMX219_PIXEL_ARRAY_TOP;
+	try_crop->left = IMX219_PIXEL_ARRAY_LEFT;
+	try_crop->width = IMX219_PIXEL_ARRAY_WIDTH;
+	try_crop->height = IMX219_PIXEL_ARRAY_HEIGHT;
+
+	mutex_unlock(&imx219->mutex);
+
+	return 0;
+}
+
+static int imx219_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+	struct imx219 *imx219 =
+		container_of(ctrl->handler, struct imx219, ctrl_handler);
+	struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
+	int ret;
+
+	if (ctrl->id == V4L2_CID_VBLANK) {
+		int exposure_max, exposure_def;
+
+		/* Update max exposure while meeting expected vblanking */
+		exposure_max = imx219->mode->height + ctrl->val - 4;
+		exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
+			exposure_max : IMX219_EXPOSURE_DEFAULT;
+		__v4l2_ctrl_modify_range(imx219->exposure,
+					 imx219->exposure->minimum,
+					 exposure_max, imx219->exposure->step,
+					 exposure_def);
+	}
+
+	/*
+	 * Applying V4L2 control value only happens
+	 * when power is up for streaming
+	 */
+	if (pm_runtime_get_if_in_use(&client->dev) == 0)
+		return 0;
+
+	switch (ctrl->id) {
+	case V4L2_CID_ANALOGUE_GAIN:
+		ret = imx219_write_reg(imx219, IMX219_REG_ANALOG_GAIN,
+				       IMX219_REG_VALUE_08BIT, ctrl->val);
+		break;
+	case V4L2_CID_EXPOSURE:
+		ret = imx219_write_reg(imx219, IMX219_REG_EXPOSURE,
+				       IMX219_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_DIGITAL_GAIN:
+		ret = imx219_write_reg(imx219, IMX219_REG_DIGITAL_GAIN,
+				       IMX219_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_TEST_PATTERN:
+		ret = imx219_write_reg(imx219, IMX219_REG_TEST_PATTERN,
+				       IMX219_REG_VALUE_16BIT,
+				       imx219_test_pattern_val[ctrl->val]);
+		break;
+	case V4L2_CID_HFLIP:
+	case V4L2_CID_VFLIP:
+		ret = imx219_write_reg(imx219, IMX219_REG_ORIENTATION, 1,
+				       imx219->hflip->val |
+				       imx219->vflip->val << 1);
+		break;
+	case V4L2_CID_VBLANK:
+		ret = imx219_write_reg(imx219, IMX219_REG_VTS,
+				       IMX219_REG_VALUE_16BIT,
+				       imx219->mode->height + ctrl->val);
+		break;
+	case V4L2_CID_TEST_PATTERN_RED:
+		ret = imx219_write_reg(imx219, IMX219_REG_TESTP_RED,
+				       IMX219_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_TEST_PATTERN_GREENR:
+		ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENR,
+				       IMX219_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_TEST_PATTERN_BLUE:
+		ret = imx219_write_reg(imx219, IMX219_REG_TESTP_BLUE,
+				       IMX219_REG_VALUE_16BIT, ctrl->val);
+		break;
+	case V4L2_CID_TEST_PATTERN_GREENB:
+		ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENB,
+				       IMX219_REG_VALUE_16BIT, ctrl->val);
+		break;
+	default:
+		dev_info(&client->dev,
+			 "ctrl(id:0x%x,val:0x%x) is not handled\n",
+			 ctrl->id, ctrl->val);
+		ret = -EINVAL;
+		break;
+	}
+
+	pm_runtime_put(&client->dev);
+
+	return ret;
+}
+
+static const struct v4l2_ctrl_ops imx219_ctrl_ops = {
+	.s_ctrl = imx219_set_ctrl,
+};
+
+static int imx219_enum_mbus_code(struct v4l2_subdev *sd,
+				 struct v4l2_subdev_state *sd_state,
+				 struct v4l2_subdev_mbus_code_enum *code)
+{
+	struct imx219 *imx219 = to_imx219(sd);
+
+	if (code->index >= (ARRAY_SIZE(codes) / 4))
+		return -EINVAL;
+
+	mutex_lock(&imx219->mutex);
+	code->code = imx219_get_format_code(imx219, codes[code->index * 4]);
+	mutex_unlock(&imx219->mutex);
+
+	return 0;
+}
+
+static int imx219_enum_frame_size(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_frame_size_enum *fse)
+{
+	struct imx219 *imx219 = to_imx219(sd);
+	u32 code;
+
+	if (fse->index >= ARRAY_SIZE(supported_modes))
+		return -EINVAL;
+
+	mutex_lock(&imx219->mutex);
+	code = imx219_get_format_code(imx219, fse->code);
+	mutex_unlock(&imx219->mutex);
+	if (fse->code != code)
+		return -EINVAL;
+
+	fse->min_width = supported_modes[fse->index].width;
+	fse->max_width = fse->min_width;
+	fse->min_height = supported_modes[fse->index].height;
+	fse->max_height = fse->min_height;
+
+	return 0;
+}
+
+static void imx219_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
+{
+	fmt->colorspace = V4L2_COLORSPACE_SRGB;
+	fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
+	fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+							  fmt->colorspace,
+							  fmt->ycbcr_enc);
+	fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+}
+
+static void imx219_update_pad_format(struct imx219 *imx219,
+				     const struct imx219_mode *mode,
+				     struct v4l2_subdev_format *fmt)
+{
+	fmt->format.width = mode->width;
+	fmt->format.height = mode->height;
+	fmt->format.field = V4L2_FIELD_NONE;
+	imx219_reset_colorspace(&fmt->format);
+}
+
+static int __imx219_get_pad_format(struct imx219 *imx219,
+				   struct v4l2_subdev_state *sd_state,
+				   struct v4l2_subdev_format *fmt)
+{
+	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+		struct v4l2_mbus_framefmt *try_fmt =
+			v4l2_subdev_get_try_format(&imx219->sd, sd_state,
+						   fmt->pad);
+		/* update the code which could change due to vflip or hflip: */
+		try_fmt->code = imx219_get_format_code(imx219, try_fmt->code);
+		fmt->format = *try_fmt;
+	} else {
+		imx219_update_pad_format(imx219, imx219->mode, fmt);
+		fmt->format.code = imx219_get_format_code(imx219,
+							  imx219->fmt.code);
+	}
+
+	return 0;
+}
+
+static int imx219_get_pad_format(struct v4l2_subdev *sd,
+				 struct v4l2_subdev_state *sd_state,
+				 struct v4l2_subdev_format *fmt)
+{
+	struct imx219 *imx219 = to_imx219(sd);
+	int ret;
+
+	mutex_lock(&imx219->mutex);
+	ret = __imx219_get_pad_format(imx219, sd_state, fmt);
+	mutex_unlock(&imx219->mutex);
+
+	return ret;
+}
+
+static int imx219_set_pad_format(struct v4l2_subdev *sd,
+				 struct v4l2_subdev_state *sd_state,
+				 struct v4l2_subdev_format *fmt)
+{
+	struct imx219 *imx219 = to_imx219(sd);
+	const struct imx219_mode *mode;
+	struct v4l2_mbus_framefmt *framefmt;
+	int exposure_max, exposure_def, hblank;
+	unsigned int i;
+
+	mutex_lock(&imx219->mutex);
+
+	for (i = 0; i < ARRAY_SIZE(codes); i++)
+		if (codes[i] == fmt->format.code)
+			break;
+	if (i >= ARRAY_SIZE(codes))
+		i = 0;
+
+	/* Bayer order varies with flips */
+	fmt->format.code = imx219_get_format_code(imx219, codes[i]);
+
+	mode = v4l2_find_nearest_size(supported_modes,
+				      ARRAY_SIZE(supported_modes),
+				      width, height,
+				      fmt->format.width, fmt->format.height);
+	imx219_update_pad_format(imx219, mode, fmt);
+	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+		framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
+		*framefmt = fmt->format;
+	} else if (imx219->mode != mode ||
+		   imx219->fmt.code != fmt->format.code) {
+		imx219->fmt = fmt->format;
+		imx219->mode = mode;
+		/* Update limits and set FPS to default */
+		__v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN,
+					 IMX219_VTS_MAX - mode->height, 1,
+					 mode->vts_def - mode->height);
+		__v4l2_ctrl_s_ctrl(imx219->vblank,
+				   mode->vts_def - mode->height);
+		/* Update max exposure while meeting expected vblanking */
+		exposure_max = mode->vts_def - 4;
+		exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
+			exposure_max : IMX219_EXPOSURE_DEFAULT;
+		__v4l2_ctrl_modify_range(imx219->exposure,
+					 imx219->exposure->minimum,
+					 exposure_max, imx219->exposure->step,
+					 exposure_def);
+		/*
+		 * Currently PPL is fixed to IMX219_PPL_DEFAULT, so hblank
+		 * depends on mode->width only, and is not changeble in any
+		 * way other than changing the mode.
+		 */
+		hblank = IMX219_PPL_DEFAULT - mode->width;
+		__v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank, 1,
+					 hblank);
+	}
+
+	mutex_unlock(&imx219->mutex);
+
+	return 0;
+}
+
+static int imx219_set_framefmt(struct imx219 *imx219)
+{
+	switch (imx219->fmt.code) {
+	case MEDIA_BUS_FMT_SRGGB8_1X8:
+	case MEDIA_BUS_FMT_SGRBG8_1X8:
+	case MEDIA_BUS_FMT_SGBRG8_1X8:
+	case MEDIA_BUS_FMT_SBGGR8_1X8:
+		return imx219_write_regs(imx219, raw8_framefmt_regs,
+					ARRAY_SIZE(raw8_framefmt_regs));
+
+	case MEDIA_BUS_FMT_SRGGB10_1X10:
+	case MEDIA_BUS_FMT_SGRBG10_1X10:
+	case MEDIA_BUS_FMT_SGBRG10_1X10:
+	case MEDIA_BUS_FMT_SBGGR10_1X10:
+		return imx219_write_regs(imx219, raw10_framefmt_regs,
+					ARRAY_SIZE(raw10_framefmt_regs));
+	}
+
+	return -EINVAL;
+}
+
+static const struct v4l2_rect *
+__imx219_get_pad_crop(struct imx219 *imx219,
+		      struct v4l2_subdev_state *sd_state,
+		      unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+	switch (which) {
+	case V4L2_SUBDEV_FORMAT_TRY:
+		return v4l2_subdev_get_try_crop(&imx219->sd, sd_state, pad);
+	case V4L2_SUBDEV_FORMAT_ACTIVE:
+		return &imx219->mode->crop;
+	}
+
+	return NULL;
+}
+
+static int imx219_get_selection(struct v4l2_subdev *sd,
+				struct v4l2_subdev_state *sd_state,
+				struct v4l2_subdev_selection *sel)
+{
+	switch (sel->target) {
+	case V4L2_SEL_TGT_CROP: {
+		struct imx219 *imx219 = to_imx219(sd);
+
+		mutex_lock(&imx219->mutex);
+		sel->r = *__imx219_get_pad_crop(imx219, sd_state, sel->pad,
+						sel->which);
+		mutex_unlock(&imx219->mutex);
+
+		return 0;
+	}
+
+	case V4L2_SEL_TGT_NATIVE_SIZE:
+		sel->r.top = 0;
+		sel->r.left = 0;
+		sel->r.width = IMX219_NATIVE_WIDTH;
+		sel->r.height = IMX219_NATIVE_HEIGHT;
+
+		return 0;
+
+	case V4L2_SEL_TGT_CROP_DEFAULT:
+	case V4L2_SEL_TGT_CROP_BOUNDS:
+		sel->r.top = IMX219_PIXEL_ARRAY_TOP;
+		sel->r.left = IMX219_PIXEL_ARRAY_LEFT;
+		sel->r.width = IMX219_PIXEL_ARRAY_WIDTH;
+		sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT;
+
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int imx219_start_streaming(struct imx219 *imx219)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
+	const struct imx219_reg_list *reg_list;
+	int ret;
+
+	ret = pm_runtime_resume_and_get(&client->dev);
+	if (ret < 0)
+		return ret;
+
+	/* Apply default values of current mode */
+	reg_list = &imx219->mode->reg_list;
+	ret = imx219_write_regs(imx219, reg_list->regs, reg_list->num_of_regs);
+	if (ret) {
+		dev_err(&client->dev, "%s failed to set mode\n", __func__);
+		goto err_rpm_put;
+	}
+
+	ret = imx219_set_framefmt(imx219);
+	if (ret) {
+		dev_err(&client->dev, "%s failed to set frame format: %d\n",
+			__func__, ret);
+		goto err_rpm_put;
+	}
+
+	/* Apply customized values from user */
+	ret =  __v4l2_ctrl_handler_setup(imx219->sd.ctrl_handler);
+	if (ret)
+		goto err_rpm_put;
+
+	/* set stream on register */
+	ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
+			       IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING);
+	if (ret)
+		goto err_rpm_put;
+
+	/* vflip and hflip cannot change during streaming */
+	__v4l2_ctrl_grab(imx219->vflip, true);
+	__v4l2_ctrl_grab(imx219->hflip, true);
+
+	return 0;
+
+err_rpm_put:
+	pm_runtime_put(&client->dev);
+	return ret;
+}
+
+static void imx219_stop_streaming(struct imx219 *imx219)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
+	int ret;
+
+	/* set stream off register */
+	ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
+			       IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY);
+	if (ret)
+		dev_err(&client->dev, "%s failed to set stream\n", __func__);
+
+	__v4l2_ctrl_grab(imx219->vflip, false);
+	__v4l2_ctrl_grab(imx219->hflip, false);
+
+	pm_runtime_put(&client->dev);
+}
+
+static int imx219_set_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct imx219 *imx219 = to_imx219(sd);
+	int ret = 0;
+
+	mutex_lock(&imx219->mutex);
+	if (imx219->streaming == enable) {
+		mutex_unlock(&imx219->mutex);
+		return 0;
+	}
+
+	if (enable) {
+		/*
+		 * Apply default & customized values
+		 * and then start streaming.
+		 */
+		ret = imx219_start_streaming(imx219);
+		if (ret)
+			goto err_unlock;
+	} else {
+		imx219_stop_streaming(imx219);
+	}
+
+	imx219->streaming = enable;
+
+	mutex_unlock(&imx219->mutex);
+
+	return ret;
+
+err_unlock:
+	mutex_unlock(&imx219->mutex);
+
+	return ret;
+}
+
+/* Power/clock management functions */
+static int imx219_power_on(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct imx219 *imx219 = to_imx219(sd);
+	int ret;
+
+	ret = regulator_bulk_enable(IMX219_NUM_SUPPLIES,
+				    imx219->supplies);
+	if (ret) {
+		dev_err(dev, "%s: failed to enable regulators\n",
+			__func__);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(imx219->xclk);
+	if (ret) {
+		dev_err(dev, "%s: failed to enable clock\n",
+			__func__);
+		goto reg_off;
+	}
+
+	gpiod_set_value_cansleep(imx219->reset_gpio, 1);
+	usleep_range(IMX219_XCLR_MIN_DELAY_US,
+		     IMX219_XCLR_MIN_DELAY_US + IMX219_XCLR_DELAY_RANGE_US);
+
+	return 0;
+
+reg_off:
+	regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies);
+
+	return ret;
+}
+
+static int imx219_power_off(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct imx219 *imx219 = to_imx219(sd);
+
+	gpiod_set_value_cansleep(imx219->reset_gpio, 0);
+	regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies);
+	clk_disable_unprepare(imx219->xclk);
+
+	return 0;
+}
+
+static int __maybe_unused imx219_suspend(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct imx219 *imx219 = to_imx219(sd);
+
+	if (imx219->streaming)
+		imx219_stop_streaming(imx219);
+
+	return 0;
+}
+
+static int __maybe_unused imx219_resume(struct device *dev)
+{
+	struct v4l2_subdev *sd = dev_get_drvdata(dev);
+	struct imx219 *imx219 = to_imx219(sd);
+	int ret;
+
+	if (imx219->streaming) {
+		ret = imx219_start_streaming(imx219);
+		if (ret)
+			goto error;
+	}
+
+	return 0;
+
+error:
+	imx219_stop_streaming(imx219);
+	imx219->streaming = false;
+
+	return ret;
+}
+
+static int imx219_get_regulators(struct imx219 *imx219)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
+	unsigned int i;
+
+	for (i = 0; i < IMX219_NUM_SUPPLIES; i++)
+		imx219->supplies[i].supply = imx219_supply_name[i];
+
+	return devm_regulator_bulk_get(&client->dev,
+				       IMX219_NUM_SUPPLIES,
+				       imx219->supplies);
+}
+
+/* Verify chip ID */
+static int imx219_identify_module(struct imx219 *imx219)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
+	int ret;
+	u32 val;
+
+	ret = imx219_read_reg(imx219, IMX219_REG_CHIP_ID,
+			      IMX219_REG_VALUE_16BIT, &val);
+	if (ret) {
+		dev_err(&client->dev, "failed to read chip id %x\n",
+			IMX219_CHIP_ID);
+		return ret;
+	}
+
+	if (val != IMX219_CHIP_ID) {
+		dev_err(&client->dev, "chip id mismatch: %x!=%x\n",
+			IMX219_CHIP_ID, val);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static const struct v4l2_subdev_core_ops imx219_core_ops = {
+	.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
+	.unsubscribe_event = v4l2_event_subdev_unsubscribe,
+};
+
+static const struct v4l2_subdev_video_ops imx219_video_ops = {
+	.s_stream = imx219_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops imx219_pad_ops = {
+	.enum_mbus_code = imx219_enum_mbus_code,
+	.get_fmt = imx219_get_pad_format,
+	.set_fmt = imx219_set_pad_format,
+	.get_selection = imx219_get_selection,
+	.enum_frame_size = imx219_enum_frame_size,
+};
+
+static const struct v4l2_subdev_ops imx219_subdev_ops = {
+	.core = &imx219_core_ops,
+	.video = &imx219_video_ops,
+	.pad = &imx219_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops imx219_internal_ops = {
+	.open = imx219_open,
+};
+
+/* Initialize control handlers */
+static int imx219_init_controls(struct imx219 *imx219)
+{
+	struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
+	struct v4l2_ctrl_handler *ctrl_hdlr;
+	unsigned int height = imx219->mode->height;
+	struct v4l2_fwnode_device_properties props;
+	int exposure_max, exposure_def, hblank;
+	int i, ret;
+
+	ctrl_hdlr = &imx219->ctrl_handler;
+	ret = v4l2_ctrl_handler_init(ctrl_hdlr, 12);
+	if (ret)
+		return ret;
+
+	mutex_init(&imx219->mutex);
+	ctrl_hdlr->lock = &imx219->mutex;
+
+	/* By default, PIXEL_RATE is read only */
+	imx219->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
+					       V4L2_CID_PIXEL_RATE,
+					       IMX219_PIXEL_RATE,
+					       IMX219_PIXEL_RATE, 1,
+					       IMX219_PIXEL_RATE);
+
+	imx219->link_freq =
+		v4l2_ctrl_new_int_menu(ctrl_hdlr, &imx219_ctrl_ops,
+				       V4L2_CID_LINK_FREQ,
+				       ARRAY_SIZE(imx219_link_freq_menu) - 1, 0,
+				       imx219_link_freq_menu);
+	if (imx219->link_freq)
+		imx219->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+	/* Initial vblank/hblank/exposure parameters based on current mode */
+	imx219->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
+					   V4L2_CID_VBLANK, IMX219_VBLANK_MIN,
+					   IMX219_VTS_MAX - height, 1,
+					   imx219->mode->vts_def - height);
+	hblank = IMX219_PPL_DEFAULT - imx219->mode->width;
+	imx219->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
+					   V4L2_CID_HBLANK, hblank, hblank,
+					   1, hblank);
+	if (imx219->hblank)
+		imx219->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+	exposure_max = imx219->mode->vts_def - 4;
+	exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
+		exposure_max : IMX219_EXPOSURE_DEFAULT;
+	imx219->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
+					     V4L2_CID_EXPOSURE,
+					     IMX219_EXPOSURE_MIN, exposure_max,
+					     IMX219_EXPOSURE_STEP,
+					     exposure_def);
+
+	v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
+			  IMX219_ANA_GAIN_MIN, IMX219_ANA_GAIN_MAX,
+			  IMX219_ANA_GAIN_STEP, IMX219_ANA_GAIN_DEFAULT);
+
+	v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
+			  IMX219_DGTL_GAIN_MIN, IMX219_DGTL_GAIN_MAX,
+			  IMX219_DGTL_GAIN_STEP, IMX219_DGTL_GAIN_DEFAULT);
+
+	imx219->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
+					  V4L2_CID_HFLIP, 0, 1, 1, 0);
+	if (imx219->hflip)
+		imx219->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+
+	imx219->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
+					  V4L2_CID_VFLIP, 0, 1, 1, 0);
+	if (imx219->vflip)
+		imx219->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT;
+
+	v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx219_ctrl_ops,
+				     V4L2_CID_TEST_PATTERN,
+				     ARRAY_SIZE(imx219_test_pattern_menu) - 1,
+				     0, 0, imx219_test_pattern_menu);
+	for (i = 0; i < 4; i++) {
+		/*
+		 * The assumption is that
+		 * V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1
+		 * V4L2_CID_TEST_PATTERN_BLUE   == V4L2_CID_TEST_PATTERN_RED + 2
+		 * V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3
+		 */
+		v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
+				  V4L2_CID_TEST_PATTERN_RED + i,
+				  IMX219_TESTP_COLOUR_MIN,
+				  IMX219_TESTP_COLOUR_MAX,
+				  IMX219_TESTP_COLOUR_STEP,
+				  IMX219_TESTP_COLOUR_MAX);
+		/* The "Solid color" pattern is white by default */
+	}
+
+	if (ctrl_hdlr->error) {
+		ret = ctrl_hdlr->error;
+		dev_err(&client->dev, "%s control init failed (%d)\n",
+			__func__, ret);
+		goto error;
+	}
+
+	ret = v4l2_fwnode_device_parse(&client->dev, &props);
+	if (ret)
+		goto error;
+
+	ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx219_ctrl_ops,
+					      &props);
+	if (ret)
+		goto error;
+
+	imx219->sd.ctrl_handler = ctrl_hdlr;
+
+	return 0;
+
+error:
+	v4l2_ctrl_handler_free(ctrl_hdlr);
+	mutex_destroy(&imx219->mutex);
+
+	return ret;
+}
+
+static void imx219_free_controls(struct imx219 *imx219)
+{
+	v4l2_ctrl_handler_free(imx219->sd.ctrl_handler);
+	mutex_destroy(&imx219->mutex);
+}
+
+static int imx219_check_hwcfg(struct device *dev)
+{
+	struct fwnode_handle *endpoint;
+	struct v4l2_fwnode_endpoint ep_cfg = {
+		.bus_type = V4L2_MBUS_CSI2_DPHY
+	};
+	int ret = -EINVAL;
+
+	endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
+	if (!endpoint) {
+		dev_err(dev, "endpoint node not found\n");
+		return -EINVAL;
+	}
+
+	if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) {
+		dev_err(dev, "could not parse endpoint\n");
+		goto error_out;
+	}
+
+	/* Check the number of MIPI CSI2 data lanes */
+	if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) {
+		dev_err(dev, "only 2 data lanes are currently supported\n");
+		goto error_out;
+	}
+
+	/* Check the link frequency set in device tree */
+	if (!ep_cfg.nr_of_link_frequencies) {
+		dev_err(dev, "link-frequency property not found in DT\n");
+		goto error_out;
+	}
+
+	if (ep_cfg.nr_of_link_frequencies != 1 ||
+	    ep_cfg.link_frequencies[0] != IMX219_DEFAULT_LINK_FREQ) {
+		dev_err(dev, "Link frequency not supported: %lld\n",
+			ep_cfg.link_frequencies[0]);
+		goto error_out;
+	}
+
+	ret = 0;
+
+error_out:
+	v4l2_fwnode_endpoint_free(&ep_cfg);
+	fwnode_handle_put(endpoint);
+
+	return ret;
+}
+
+static int imx219_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct imx219 *imx219;
+	int ret;
+
+	imx219 = devm_kzalloc(&client->dev, sizeof(*imx219), GFP_KERNEL);
+	if (!imx219)
+		return -ENOMEM;
+
+	v4l2_i2c_subdev_init(&imx219->sd, client, &imx219_subdev_ops);
+
+	/* Check the hardware configuration in device tree */
+	if (imx219_check_hwcfg(dev))
+		return -EINVAL;
+
+	/* Get system clock (xclk) */
+	imx219->xclk = devm_clk_get(dev, NULL);
+	if (IS_ERR(imx219->xclk)) {
+		dev_err(dev, "failed to get xclk\n");
+		return PTR_ERR(imx219->xclk);
+	}
+
+	imx219->xclk_freq = clk_get_rate(imx219->xclk);
+	if (imx219->xclk_freq != IMX219_XCLK_FREQ) {
+		dev_err(dev, "xclk frequency not supported: %d Hz\n",
+			imx219->xclk_freq);
+		return -EINVAL;
+	}
+
+	ret = imx219_get_regulators(imx219);
+	if (ret) {
+		dev_err(dev, "failed to get regulators\n");
+		return ret;
+	}
+
+	/* Request optional enable pin */
+	imx219->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+						     GPIOD_OUT_HIGH);
+
+	/*
+	 * The sensor must be powered for imx219_identify_module()
+	 * to be able to read the CHIP_ID register
+	 */
+	ret = imx219_power_on(dev);
+	if (ret)
+		return ret;
+
+	ret = imx219_identify_module(imx219);
+	if (ret)
+		goto error_power_off;
+
+	/* Set default mode to max resolution */
+	imx219->mode = &supported_modes[0];
+
+	/* sensor doesn't enter LP-11 state upon power up until and unless
+	 * streaming is started, so upon power up switch the modes to:
+	 * streaming -> standby
+	 */
+	ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
+			       IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING);
+	if (ret < 0)
+		goto error_power_off;
+	usleep_range(100, 110);
+
+	/* put sensor back to standby mode */
+	ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT,
+			       IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY);
+	if (ret < 0)
+		goto error_power_off;
+	usleep_range(100, 110);
+
+	ret = imx219_init_controls(imx219);
+	if (ret)
+		goto error_power_off;
+
+	/* Initialize subdev */
+	imx219->sd.internal_ops = &imx219_internal_ops;
+	imx219->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+			    V4L2_SUBDEV_FL_HAS_EVENTS;
+	imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+
+	/* Initialize source pad */
+	imx219->pad.flags = MEDIA_PAD_FL_SOURCE;
+
+	/* Initialize default format */
+	imx219_set_default_format(imx219);
+
+	ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad);
+	if (ret) {
+		dev_err(dev, "failed to init entity pads: %d\n", ret);
+		goto error_handler_free;
+	}
+
+	ret = v4l2_async_register_subdev_sensor(&imx219->sd);
+	if (ret < 0) {
+		dev_err(dev, "failed to register sensor sub-device: %d\n", ret);
+		goto error_media_entity;
+	}
+
+	/* Enable runtime PM and turn off the device */
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+	pm_runtime_idle(dev);
+
+	return 0;
+
+error_media_entity:
+	media_entity_cleanup(&imx219->sd.entity);
+
+error_handler_free:
+	imx219_free_controls(imx219);
+
+error_power_off:
+	imx219_power_off(dev);
+
+	return ret;
+}
+
+static void imx219_remove(struct i2c_client *client)
+{
+	struct v4l2_subdev *sd = i2c_get_clientdata(client);
+	struct imx219 *imx219 = to_imx219(sd);
+
+	v4l2_async_unregister_subdev(sd);
+	media_entity_cleanup(&sd->entity);
+	imx219_free_controls(imx219);
+
+	pm_runtime_disable(&client->dev);
+	if (!pm_runtime_status_suspended(&client->dev))
+		imx219_power_off(&client->dev);
+	pm_runtime_set_suspended(&client->dev);
+}
+
+static const struct of_device_id imx219_dt_ids[] = {
+	{ .compatible = "sony,imx219" },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx219_dt_ids);
+
+static const struct dev_pm_ops imx219_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(imx219_suspend, imx219_resume)
+	SET_RUNTIME_PM_OPS(imx219_power_off, imx219_power_on, NULL)
+};
+
+static struct i2c_driver imx219_i2c_driver = {
+	.driver = {
+		.name = "imx219",
+		.of_match_table	= imx219_dt_ids,
+		.pm = &imx219_pm_ops,
+	},
+	.probe_new = imx219_probe,
+	.remove = imx219_remove,
+};
+
+module_i2c_driver(imx219_i2c_driver);
+
+MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com");
+MODULE_DESCRIPTION("Sony IMX219 sensor driver");
+MODULE_LICENSE("GPL v2");
-- 
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