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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/media/usb/gspca/pac207.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
Diffstat (limited to 'drivers/media/usb/gspca/pac207.c')
-rw-r--r--drivers/media/usb/gspca/pac207.c475
1 files changed, 475 insertions, 0 deletions
diff --git a/drivers/media/usb/gspca/pac207.c b/drivers/media/usb/gspca/pac207.c
new file mode 100644
index 000000000..34127114c
--- /dev/null
+++ b/drivers/media/usb/gspca/pac207.c
@@ -0,0 +1,475 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Pixart PAC207BCA library
+ *
+ * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com>
+ * Copyright (C) 2005 Thomas Kaiser thomas@kaiser-linux.li
+ * Copyleft (C) 2005 Michel Xhaard mxhaard@magic.fr
+ *
+ * V4L2 by Jean-Francois Moine <http://moinejf.free.fr>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define MODULE_NAME "pac207"
+
+#include <linux/input.h>
+#include "gspca.h"
+/* Include pac common sof detection functions */
+#include "pac_common.h"
+
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_DESCRIPTION("Pixart PAC207");
+MODULE_LICENSE("GPL");
+
+#define PAC207_CTRL_TIMEOUT 100 /* ms */
+
+#define PAC207_BRIGHTNESS_MIN 0
+#define PAC207_BRIGHTNESS_MAX 255
+#define PAC207_BRIGHTNESS_DEFAULT 46
+#define PAC207_BRIGHTNESS_REG 0x08
+
+#define PAC207_EXPOSURE_MIN 3
+#define PAC207_EXPOSURE_MAX 90 /* 1 sec expo time / 1 fps */
+#define PAC207_EXPOSURE_DEFAULT 5 /* power on default: 3 */
+#define PAC207_EXPOSURE_REG 0x02
+
+#define PAC207_GAIN_MIN 0
+#define PAC207_GAIN_MAX 31
+#define PAC207_GAIN_DEFAULT 7 /* power on default: 9 */
+#define PAC207_GAIN_REG 0x0e
+
+#define PAC207_AUTOGAIN_DEADZONE 30
+
+/* global parameters */
+static int led_invert;
+module_param(led_invert, int, 0644);
+MODULE_PARM_DESC(led_invert, "Invert led");
+
+/* specific webcam descriptor */
+struct sd {
+ struct gspca_dev gspca_dev; /* !! must be the first item */
+
+ struct v4l2_ctrl *brightness;
+
+ u8 mode;
+ u8 sof_read;
+ u8 header_read;
+ u8 autogain_ignore_frames;
+
+ atomic_t avg_lum;
+};
+
+static const struct v4l2_pix_format sif_mode[] = {
+ {176, 144, V4L2_PIX_FMT_PAC207, V4L2_FIELD_NONE,
+ .bytesperline = 176,
+ .sizeimage = (176 + 2) * 144,
+ /* uncompressed, add 2 bytes / line for line header */
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 1},
+ {352, 288, V4L2_PIX_FMT_PAC207, V4L2_FIELD_NONE,
+ .bytesperline = 352,
+ /* compressed, but only when needed (not compressed
+ when the framerate is low) */
+ .sizeimage = (352 + 2) * 288,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .priv = 0},
+};
+
+static const __u8 pac207_sensor_init[][8] = {
+ {0x10, 0x12, 0x0d, 0x12, 0x0c, 0x01, 0x29, 0x84},
+ {0x49, 0x64, 0x64, 0x64, 0x04, 0x10, 0xf0, 0x30},
+ {0x00, 0x00, 0x00, 0x70, 0xa0, 0xf8, 0x00, 0x00},
+ {0x32, 0x00, 0x96, 0x00, 0xa2, 0x02, 0xaf, 0x00},
+};
+
+static void pac207_write_regs(struct gspca_dev *gspca_dev, u16 index,
+ const u8 *buffer, u16 length)
+{
+ struct usb_device *udev = gspca_dev->dev;
+ int err;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+
+ memcpy(gspca_dev->usb_buf, buffer, length);
+
+ err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x01,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+ 0x00, index,
+ gspca_dev->usb_buf, length, PAC207_CTRL_TIMEOUT);
+ if (err < 0) {
+ pr_err("Failed to write registers to index 0x%04X, error %d\n",
+ index, err);
+ gspca_dev->usb_err = err;
+ }
+}
+
+static void pac207_write_reg(struct gspca_dev *gspca_dev, u16 index, u16 value)
+{
+ struct usb_device *udev = gspca_dev->dev;
+ int err;
+
+ if (gspca_dev->usb_err < 0)
+ return;
+
+ err = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x00,
+ USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+ value, index, NULL, 0, PAC207_CTRL_TIMEOUT);
+ if (err) {
+ pr_err("Failed to write a register (index 0x%04X, value 0x%02X, error %d)\n",
+ index, value, err);
+ gspca_dev->usb_err = err;
+ }
+}
+
+static int pac207_read_reg(struct gspca_dev *gspca_dev, u16 index)
+{
+ struct usb_device *udev = gspca_dev->dev;
+ int res;
+
+ if (gspca_dev->usb_err < 0)
+ return 0;
+
+ res = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x00,
+ USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE,
+ 0x00, index,
+ gspca_dev->usb_buf, 1, PAC207_CTRL_TIMEOUT);
+ if (res < 0) {
+ pr_err("Failed to read a register (index 0x%04X, error %d)\n",
+ index, res);
+ gspca_dev->usb_err = res;
+ return 0;
+ }
+
+ return gspca_dev->usb_buf[0];
+}
+
+/* this function is called at probe time */
+static int sd_config(struct gspca_dev *gspca_dev,
+ const struct usb_device_id *id)
+{
+ struct cam *cam;
+ u8 idreg[2];
+
+ idreg[0] = pac207_read_reg(gspca_dev, 0x0000);
+ idreg[1] = pac207_read_reg(gspca_dev, 0x0001);
+ idreg[0] = ((idreg[0] & 0x0f) << 4) | ((idreg[1] & 0xf0) >> 4);
+ idreg[1] = idreg[1] & 0x0f;
+ gspca_dbg(gspca_dev, D_PROBE, "Pixart Sensor ID 0x%02X Chips ID 0x%02X\n",
+ idreg[0], idreg[1]);
+
+ if (idreg[0] != 0x27) {
+ gspca_dbg(gspca_dev, D_PROBE, "Error invalid sensor ID!\n");
+ return -ENODEV;
+ }
+
+ gspca_dbg(gspca_dev, D_PROBE,
+ "Pixart PAC207BCA Image Processor and Control Chip detected (vid/pid 0x%04X:0x%04X)\n",
+ id->idVendor, id->idProduct);
+
+ cam = &gspca_dev->cam;
+ cam->cam_mode = sif_mode;
+ cam->nmodes = ARRAY_SIZE(sif_mode);
+
+ return 0;
+}
+
+/* this function is called at probe and resume time */
+static int sd_init(struct gspca_dev *gspca_dev)
+{
+ u8 mode;
+
+ /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */
+ if (led_invert)
+ mode = 0x02;
+ else
+ mode = 0x00;
+ pac207_write_reg(gspca_dev, 0x41, mode);
+ pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
+
+ return gspca_dev->usb_err;
+}
+
+static void setcontrol(struct gspca_dev *gspca_dev, u16 reg, u16 val)
+{
+ pac207_write_reg(gspca_dev, reg, val);
+ pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
+ pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
+}
+
+static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct gspca_dev *gspca_dev =
+ container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
+ struct sd *sd = (struct sd *)gspca_dev;
+
+ gspca_dev->usb_err = 0;
+
+ if (ctrl->id == V4L2_CID_AUTOGAIN && ctrl->is_new && ctrl->val) {
+ /* when switching to autogain set defaults to make sure
+ we are on a valid point of the autogain gain /
+ exposure knee graph, and give this change time to
+ take effect before doing autogain. */
+ gspca_dev->exposure->val = PAC207_EXPOSURE_DEFAULT;
+ gspca_dev->gain->val = PAC207_GAIN_DEFAULT;
+ sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
+ }
+
+ if (!gspca_dev->streaming)
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ setcontrol(gspca_dev, PAC207_BRIGHTNESS_REG, ctrl->val);
+ break;
+ case V4L2_CID_AUTOGAIN:
+ if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
+ setcontrol(gspca_dev, PAC207_EXPOSURE_REG,
+ gspca_dev->exposure->val);
+ if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
+ setcontrol(gspca_dev, PAC207_GAIN_REG,
+ gspca_dev->gain->val);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return gspca_dev->usb_err;
+}
+
+static const struct v4l2_ctrl_ops sd_ctrl_ops = {
+ .s_ctrl = sd_s_ctrl,
+};
+
+/* this function is called at probe time */
+static int sd_init_controls(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
+
+ gspca_dev->vdev.ctrl_handler = hdl;
+ v4l2_ctrl_handler_init(hdl, 4);
+
+ sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_BRIGHTNESS,
+ PAC207_BRIGHTNESS_MIN, PAC207_BRIGHTNESS_MAX,
+ 1, PAC207_BRIGHTNESS_DEFAULT);
+ gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
+ gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_EXPOSURE,
+ PAC207_EXPOSURE_MIN, PAC207_EXPOSURE_MAX,
+ 1, PAC207_EXPOSURE_DEFAULT);
+ gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_GAIN,
+ PAC207_GAIN_MIN, PAC207_GAIN_MAX,
+ 1, PAC207_GAIN_DEFAULT);
+ if (hdl->error) {
+ pr_err("Could not initialize controls\n");
+ return hdl->error;
+ }
+ v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);
+ return 0;
+}
+
+/* -- start the camera -- */
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ __u8 mode;
+
+ pac207_write_reg(gspca_dev, 0x0f, 0x10); /* Power control (Bit 6-0) */
+ pac207_write_regs(gspca_dev, 0x0002, pac207_sensor_init[0], 8);
+ pac207_write_regs(gspca_dev, 0x000a, pac207_sensor_init[1], 8);
+ pac207_write_regs(gspca_dev, 0x0012, pac207_sensor_init[2], 8);
+ pac207_write_regs(gspca_dev, 0x0042, pac207_sensor_init[3], 8);
+
+ /* Compression Balance */
+ if (gspca_dev->pixfmt.width == 176)
+ pac207_write_reg(gspca_dev, 0x4a, 0xff);
+ else
+ pac207_write_reg(gspca_dev, 0x4a, 0x30);
+ pac207_write_reg(gspca_dev, 0x4b, 0x00); /* Sram test value */
+ pac207_write_reg(gspca_dev, 0x08, v4l2_ctrl_g_ctrl(sd->brightness));
+
+ /* PGA global gain (Bit 4-0) */
+ pac207_write_reg(gspca_dev, 0x0e,
+ v4l2_ctrl_g_ctrl(gspca_dev->gain));
+ pac207_write_reg(gspca_dev, 0x02,
+ v4l2_ctrl_g_ctrl(gspca_dev->exposure)); /* PXCK = 12MHz /n */
+
+ /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */
+ if (led_invert)
+ mode = 0x00;
+ else
+ mode = 0x02;
+ if (gspca_dev->pixfmt.width == 176) { /* 176x144 */
+ mode |= 0x01;
+ gspca_dbg(gspca_dev, D_STREAM, "pac207_start mode 176x144\n");
+ } else { /* 352x288 */
+ gspca_dbg(gspca_dev, D_STREAM, "pac207_start mode 352x288\n");
+ }
+ pac207_write_reg(gspca_dev, 0x41, mode);
+
+ pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
+ pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
+ msleep(10);
+ pac207_write_reg(gspca_dev, 0x40, 0x01); /* Start ISO pipe */
+
+ sd->sof_read = 0;
+ sd->autogain_ignore_frames = 0;
+ atomic_set(&sd->avg_lum, -1);
+ return gspca_dev->usb_err;
+}
+
+static void sd_stopN(struct gspca_dev *gspca_dev)
+{
+ u8 mode;
+
+ /* mode: Image Format (Bit 0), LED (1), Compr. test mode (2) */
+ if (led_invert)
+ mode = 0x02;
+ else
+ mode = 0x00;
+ pac207_write_reg(gspca_dev, 0x40, 0x00); /* Stop ISO pipe */
+ pac207_write_reg(gspca_dev, 0x41, mode); /* Turn off LED */
+ pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
+}
+
+
+static void pac207_do_auto_gain(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int avg_lum = atomic_read(&sd->avg_lum);
+
+ if (avg_lum == -1)
+ return;
+
+ if (sd->autogain_ignore_frames > 0)
+ sd->autogain_ignore_frames--;
+ else if (gspca_coarse_grained_expo_autogain(gspca_dev, avg_lum,
+ 90, PAC207_AUTOGAIN_DEADZONE))
+ sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
+}
+
+static void sd_pkt_scan(struct gspca_dev *gspca_dev,
+ u8 *data,
+ int len)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ unsigned char *sof;
+
+ sof = pac_find_sof(gspca_dev, &sd->sof_read, data, len);
+ if (sof) {
+ int n;
+
+ /* finish decoding current frame */
+ n = sof - data;
+ if (n > sizeof pac_sof_marker)
+ n -= sizeof pac_sof_marker;
+ else
+ n = 0;
+ gspca_frame_add(gspca_dev, LAST_PACKET,
+ data, n);
+ sd->header_read = 0;
+ gspca_frame_add(gspca_dev, FIRST_PACKET, NULL, 0);
+ len -= sof - data;
+ data = sof;
+ }
+ if (sd->header_read < 11) {
+ int needed;
+
+ /* get average lumination from frame header (byte 5) */
+ if (sd->header_read < 5) {
+ needed = 5 - sd->header_read;
+ if (len >= needed)
+ atomic_set(&sd->avg_lum, data[needed - 1]);
+ }
+ /* skip the rest of the header */
+ needed = 11 - sd->header_read;
+ if (len <= needed) {
+ sd->header_read += len;
+ return;
+ }
+ data += needed;
+ len -= needed;
+ sd->header_read = 11;
+ }
+
+ gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
+}
+
+#if IS_ENABLED(CONFIG_INPUT)
+static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
+ u8 *data, /* interrupt packet data */
+ int len) /* interrupt packet length */
+{
+ int ret = -EINVAL;
+
+ if (len == 2 && data[0] == 0x5a && data[1] == 0x5a) {
+ input_report_key(gspca_dev->input_dev, KEY_CAMERA, 1);
+ input_sync(gspca_dev->input_dev);
+ input_report_key(gspca_dev->input_dev, KEY_CAMERA, 0);
+ input_sync(gspca_dev->input_dev);
+ ret = 0;
+ }
+
+ return ret;
+}
+#endif
+
+/* sub-driver description */
+static const struct sd_desc sd_desc = {
+ .name = MODULE_NAME,
+ .config = sd_config,
+ .init = sd_init,
+ .init_controls = sd_init_controls,
+ .start = sd_start,
+ .stopN = sd_stopN,
+ .dq_callback = pac207_do_auto_gain,
+ .pkt_scan = sd_pkt_scan,
+#if IS_ENABLED(CONFIG_INPUT)
+ .int_pkt_scan = sd_int_pkt_scan,
+#endif
+};
+
+/* -- module initialisation -- */
+static const struct usb_device_id device_table[] = {
+ {USB_DEVICE(0x041e, 0x4028)},
+ {USB_DEVICE(0x093a, 0x2460)},
+ {USB_DEVICE(0x093a, 0x2461)},
+ {USB_DEVICE(0x093a, 0x2463)},
+ {USB_DEVICE(0x093a, 0x2464)},
+ {USB_DEVICE(0x093a, 0x2468)},
+ {USB_DEVICE(0x093a, 0x2470)},
+ {USB_DEVICE(0x093a, 0x2471)},
+ {USB_DEVICE(0x093a, 0x2472)},
+ {USB_DEVICE(0x093a, 0x2474)},
+ {USB_DEVICE(0x093a, 0x2476)},
+ {USB_DEVICE(0x145f, 0x013a)},
+ {USB_DEVICE(0x2001, 0xf115)},
+ {}
+};
+MODULE_DEVICE_TABLE(usb, device_table);
+
+/* -- device connect -- */
+static int sd_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ return gspca_dev_probe(intf, id, &sd_desc, sizeof(struct sd),
+ THIS_MODULE);
+}
+
+static struct usb_driver sd_driver = {
+ .name = MODULE_NAME,
+ .id_table = device_table,
+ .probe = sd_probe,
+ .disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+ .suspend = gspca_suspend,
+ .resume = gspca_resume,
+ .reset_resume = gspca_resume,
+#endif
+};
+
+module_usb_driver(sd_driver);