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author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/media/usb/gspca/pac207.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
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.c | 475 |
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); |