From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds 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/usb/gspca/w996Xcf.c | 569 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 569 insertions(+) create mode 100644 drivers/media/usb/gspca/w996Xcf.c (limited to 'drivers/media/usb/gspca/w996Xcf.c') diff --git a/drivers/media/usb/gspca/w996Xcf.c b/drivers/media/usb/gspca/w996Xcf.c new file mode 100644 index 000000000..79baa0c1a --- /dev/null +++ b/drivers/media/usb/gspca/w996Xcf.c @@ -0,0 +1,569 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * GSPCA sub driver for W996[78]CF JPEG USB Dual Mode Camera Chip. + * + * Copyright (C) 2009 Hans de Goede + * + * This module is adapted from the in kernel v4l1 w9968cf driver: + * + * Copyright (C) 2002-2004 by Luca Risolia + */ + +/* Note this is not a stand alone driver, it gets included in ov519.c, this + is a bit of a hack, but it needs the driver code for a lot of different + ov sensors which is already present in ov519.c (the old v4l1 driver used + the ovchipcam framework). When we have the time we really should move + the sensor drivers to v4l2 sub drivers, and properly split of this + driver from ov519.c */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#define W9968CF_I2C_BUS_DELAY 4 /* delay in us for I2C bit r/w operations */ + +#define Y_QUANTABLE (&sd->jpeg_hdr[JPEG_QT0_OFFSET]) +#define UV_QUANTABLE (&sd->jpeg_hdr[JPEG_QT1_OFFSET]) + +static const struct v4l2_pix_format w9968cf_vga_mode[] = { + {160, 120, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE, + .bytesperline = 160 * 2, + .sizeimage = 160 * 120 * 2, + .colorspace = V4L2_COLORSPACE_JPEG}, + {176, 144, V4L2_PIX_FMT_UYVY, V4L2_FIELD_NONE, + .bytesperline = 176 * 2, + .sizeimage = 176 * 144 * 2, + .colorspace = V4L2_COLORSPACE_JPEG}, + {320, 240, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, + .bytesperline = 320 * 2, + .sizeimage = 320 * 240 * 2, + .colorspace = V4L2_COLORSPACE_JPEG}, + {352, 288, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, + .bytesperline = 352 * 2, + .sizeimage = 352 * 288 * 2, + .colorspace = V4L2_COLORSPACE_JPEG}, + {640, 480, V4L2_PIX_FMT_JPEG, V4L2_FIELD_NONE, + .bytesperline = 640 * 2, + .sizeimage = 640 * 480 * 2, + .colorspace = V4L2_COLORSPACE_JPEG}, +}; + +static void reg_w(struct sd *sd, u16 index, u16 value); + +/*-------------------------------------------------------------------------- + Write 64-bit data to the fast serial bus registers. + Return 0 on success, -1 otherwise. + --------------------------------------------------------------------------*/ +static void w9968cf_write_fsb(struct sd *sd, u16* data) +{ + struct usb_device *udev = sd->gspca_dev.dev; + u16 value; + int ret; + + if (sd->gspca_dev.usb_err < 0) + return; + + value = *data++; + memcpy(sd->gspca_dev.usb_buf, data, 6); + + /* Avoid things going to fast for the bridge with a xhci host */ + udelay(150); + ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0, + USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE, + value, 0x06, sd->gspca_dev.usb_buf, 6, 500); + if (ret < 0) { + pr_err("Write FSB registers failed (%d)\n", ret); + sd->gspca_dev.usb_err = ret; + } +} + +/*-------------------------------------------------------------------------- + Write data to the serial bus control register. + Return 0 on success, a negative number otherwise. + --------------------------------------------------------------------------*/ +static void w9968cf_write_sb(struct sd *sd, u16 value) +{ + int ret; + + if (sd->gspca_dev.usb_err < 0) + return; + + /* Avoid things going to fast for the bridge with a xhci host */ + udelay(150); + + /* We don't use reg_w here, as that would cause all writes when + bitbanging i2c to be logged, making the logs impossible to read */ + ret = usb_control_msg(sd->gspca_dev.dev, + usb_sndctrlpipe(sd->gspca_dev.dev, 0), + 0, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, 0x01, NULL, 0, 500); + + udelay(W9968CF_I2C_BUS_DELAY); + + if (ret < 0) { + pr_err("Write SB reg [01] %04x failed\n", value); + sd->gspca_dev.usb_err = ret; + } +} + +/*-------------------------------------------------------------------------- + Read data from the serial bus control register. + Return 0 on success, a negative number otherwise. + --------------------------------------------------------------------------*/ +static int w9968cf_read_sb(struct sd *sd) +{ + int ret; + + if (sd->gspca_dev.usb_err < 0) + return -1; + + /* Avoid things going to fast for the bridge with a xhci host */ + udelay(150); + + /* We don't use reg_r here, as the w9968cf is special and has 16 + bit registers instead of 8 bit */ + ret = usb_control_msg(sd->gspca_dev.dev, + usb_rcvctrlpipe(sd->gspca_dev.dev, 0), + 1, + USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + 0, 0x01, sd->gspca_dev.usb_buf, 2, 500); + if (ret >= 0) { + ret = sd->gspca_dev.usb_buf[0] | + (sd->gspca_dev.usb_buf[1] << 8); + } else { + pr_err("Read SB reg [01] failed\n"); + sd->gspca_dev.usb_err = ret; + /* + * Make sure the buffer is zeroed to avoid uninitialized + * values. + */ + memset(sd->gspca_dev.usb_buf, 0, 2); + } + + udelay(W9968CF_I2C_BUS_DELAY); + + return ret; +} + +/*-------------------------------------------------------------------------- + Upload quantization tables for the JPEG compression. + This function is called by w9968cf_start_transfer(). + Return 0 on success, a negative number otherwise. + --------------------------------------------------------------------------*/ +static void w9968cf_upload_quantizationtables(struct sd *sd) +{ + u16 a, b; + int i, j; + + reg_w(sd, 0x39, 0x0010); /* JPEG clock enable */ + + for (i = 0, j = 0; i < 32; i++, j += 2) { + a = Y_QUANTABLE[j] | ((unsigned)(Y_QUANTABLE[j + 1]) << 8); + b = UV_QUANTABLE[j] | ((unsigned)(UV_QUANTABLE[j + 1]) << 8); + reg_w(sd, 0x40 + i, a); + reg_w(sd, 0x60 + i, b); + } + reg_w(sd, 0x39, 0x0012); /* JPEG encoder enable */ +} + +/**************************************************************************** + * Low-level I2C I/O functions. * + * The adapter supports the following I2C transfer functions: * + * i2c_adap_fastwrite_byte_data() (at 400 kHz bit frequency only) * + * i2c_adap_read_byte_data() * + * i2c_adap_read_byte() * + ****************************************************************************/ + +static void w9968cf_smbus_start(struct sd *sd) +{ + w9968cf_write_sb(sd, 0x0011); /* SDE=1, SDA=0, SCL=1 */ + w9968cf_write_sb(sd, 0x0010); /* SDE=1, SDA=0, SCL=0 */ +} + +static void w9968cf_smbus_stop(struct sd *sd) +{ + w9968cf_write_sb(sd, 0x0010); /* SDE=1, SDA=0, SCL=0 */ + w9968cf_write_sb(sd, 0x0011); /* SDE=1, SDA=0, SCL=1 */ + w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */ +} + +static void w9968cf_smbus_write_byte(struct sd *sd, u8 v) +{ + u8 bit; + int sda; + + for (bit = 0 ; bit < 8 ; bit++) { + sda = (v & 0x80) ? 2 : 0; + v <<= 1; + /* SDE=1, SDA=sda, SCL=0 */ + w9968cf_write_sb(sd, 0x10 | sda); + /* SDE=1, SDA=sda, SCL=1 */ + w9968cf_write_sb(sd, 0x11 | sda); + /* SDE=1, SDA=sda, SCL=0 */ + w9968cf_write_sb(sd, 0x10 | sda); + } +} + +static void w9968cf_smbus_read_byte(struct sd *sd, u8 *v) +{ + u8 bit; + + /* No need to ensure SDA is high as we are always called after + read_ack which ends with SDA high */ + *v = 0; + for (bit = 0 ; bit < 8 ; bit++) { + *v <<= 1; + /* SDE=1, SDA=1, SCL=1 */ + w9968cf_write_sb(sd, 0x0013); + *v |= (w9968cf_read_sb(sd) & 0x0008) ? 1 : 0; + /* SDE=1, SDA=1, SCL=0 */ + w9968cf_write_sb(sd, 0x0012); + } +} + +static void w9968cf_smbus_write_nack(struct sd *sd) +{ + /* No need to ensure SDA is high as we are always called after + read_byte which ends with SDA high */ + w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */ + w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */ +} + +static void w9968cf_smbus_read_ack(struct sd *sd) +{ + struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; + int sda; + + /* Ensure SDA is high before raising clock to avoid a spurious stop */ + w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */ + w9968cf_write_sb(sd, 0x0013); /* SDE=1, SDA=1, SCL=1 */ + sda = w9968cf_read_sb(sd); + w9968cf_write_sb(sd, 0x0012); /* SDE=1, SDA=1, SCL=0 */ + if (sda >= 0 && (sda & 0x08)) { + gspca_dbg(gspca_dev, D_USBI, "Did not receive i2c ACK\n"); + sd->gspca_dev.usb_err = -EIO; + } +} + +/* SMBus protocol: S Addr Wr [A] Subaddr [A] Value [A] P */ +static void w9968cf_i2c_w(struct sd *sd, u8 reg, u8 value) +{ + struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; + u16* data = (u16 *)sd->gspca_dev.usb_buf; + + data[0] = 0x082f | ((sd->sensor_addr & 0x80) ? 0x1500 : 0x0); + data[0] |= (sd->sensor_addr & 0x40) ? 0x4000 : 0x0; + data[1] = 0x2082 | ((sd->sensor_addr & 0x40) ? 0x0005 : 0x0); + data[1] |= (sd->sensor_addr & 0x20) ? 0x0150 : 0x0; + data[1] |= (sd->sensor_addr & 0x10) ? 0x5400 : 0x0; + data[2] = 0x8208 | ((sd->sensor_addr & 0x08) ? 0x0015 : 0x0); + data[2] |= (sd->sensor_addr & 0x04) ? 0x0540 : 0x0; + data[2] |= (sd->sensor_addr & 0x02) ? 0x5000 : 0x0; + data[3] = 0x1d20 | ((sd->sensor_addr & 0x02) ? 0x0001 : 0x0); + data[3] |= (sd->sensor_addr & 0x01) ? 0x0054 : 0x0; + + w9968cf_write_fsb(sd, data); + + data[0] = 0x8208 | ((reg & 0x80) ? 0x0015 : 0x0); + data[0] |= (reg & 0x40) ? 0x0540 : 0x0; + data[0] |= (reg & 0x20) ? 0x5000 : 0x0; + data[1] = 0x0820 | ((reg & 0x20) ? 0x0001 : 0x0); + data[1] |= (reg & 0x10) ? 0x0054 : 0x0; + data[1] |= (reg & 0x08) ? 0x1500 : 0x0; + data[1] |= (reg & 0x04) ? 0x4000 : 0x0; + data[2] = 0x2082 | ((reg & 0x04) ? 0x0005 : 0x0); + data[2] |= (reg & 0x02) ? 0x0150 : 0x0; + data[2] |= (reg & 0x01) ? 0x5400 : 0x0; + data[3] = 0x001d; + + w9968cf_write_fsb(sd, data); + + data[0] = 0x8208 | ((value & 0x80) ? 0x0015 : 0x0); + data[0] |= (value & 0x40) ? 0x0540 : 0x0; + data[0] |= (value & 0x20) ? 0x5000 : 0x0; + data[1] = 0x0820 | ((value & 0x20) ? 0x0001 : 0x0); + data[1] |= (value & 0x10) ? 0x0054 : 0x0; + data[1] |= (value & 0x08) ? 0x1500 : 0x0; + data[1] |= (value & 0x04) ? 0x4000 : 0x0; + data[2] = 0x2082 | ((value & 0x04) ? 0x0005 : 0x0); + data[2] |= (value & 0x02) ? 0x0150 : 0x0; + data[2] |= (value & 0x01) ? 0x5400 : 0x0; + data[3] = 0xfe1d; + + w9968cf_write_fsb(sd, data); + + gspca_dbg(gspca_dev, D_USBO, "i2c 0x%02x -> [0x%02x]\n", value, reg); +} + +/* SMBus protocol: S Addr Wr [A] Subaddr [A] P S Addr+1 Rd [A] [Value] NA P */ +static int w9968cf_i2c_r(struct sd *sd, u8 reg) +{ + struct gspca_dev *gspca_dev = (struct gspca_dev *)sd; + int ret = 0; + u8 value; + + /* Fast serial bus data control disable */ + w9968cf_write_sb(sd, 0x0013); /* don't change ! */ + + w9968cf_smbus_start(sd); + w9968cf_smbus_write_byte(sd, sd->sensor_addr); + w9968cf_smbus_read_ack(sd); + w9968cf_smbus_write_byte(sd, reg); + w9968cf_smbus_read_ack(sd); + w9968cf_smbus_stop(sd); + w9968cf_smbus_start(sd); + w9968cf_smbus_write_byte(sd, sd->sensor_addr + 1); + w9968cf_smbus_read_ack(sd); + w9968cf_smbus_read_byte(sd, &value); + /* signal we don't want to read anymore, the v4l1 driver used to + send an ack here which is very wrong! (and then fixed + the issues this gave by retrying reads) */ + w9968cf_smbus_write_nack(sd); + w9968cf_smbus_stop(sd); + + /* Fast serial bus data control re-enable */ + w9968cf_write_sb(sd, 0x0030); + + if (sd->gspca_dev.usb_err >= 0) { + ret = value; + gspca_dbg(gspca_dev, D_USBI, "i2c [0x%02X] -> 0x%02X\n", + reg, value); + } else + gspca_err(gspca_dev, "i2c read [0x%02x] failed\n", reg); + + return ret; +} + +/*-------------------------------------------------------------------------- + Turn on the LED on some webcams. A beep should be heard too. + Return 0 on success, a negative number otherwise. + --------------------------------------------------------------------------*/ +static void w9968cf_configure(struct sd *sd) +{ + reg_w(sd, 0x00, 0xff00); /* power-down */ + reg_w(sd, 0x00, 0xbf17); /* reset everything */ + reg_w(sd, 0x00, 0xbf10); /* normal operation */ + reg_w(sd, 0x01, 0x0010); /* serial bus, SDS high */ + reg_w(sd, 0x01, 0x0000); /* serial bus, SDS low */ + reg_w(sd, 0x01, 0x0010); /* ..high 'beep-beep' */ + reg_w(sd, 0x01, 0x0030); /* Set sda scl to FSB mode */ + + sd->stopped = 1; +} + +static void w9968cf_init(struct sd *sd) +{ + unsigned long hw_bufsize = sd->sif ? (352 * 288 * 2) : (640 * 480 * 2), + y0 = 0x0000, + u0 = y0 + hw_bufsize / 2, + v0 = u0 + hw_bufsize / 4, + y1 = v0 + hw_bufsize / 4, + u1 = y1 + hw_bufsize / 2, + v1 = u1 + hw_bufsize / 4; + + reg_w(sd, 0x00, 0xff00); /* power off */ + reg_w(sd, 0x00, 0xbf10); /* power on */ + + reg_w(sd, 0x03, 0x405d); /* DRAM timings */ + reg_w(sd, 0x04, 0x0030); /* SDRAM timings */ + + reg_w(sd, 0x20, y0 & 0xffff); /* Y buf.0, low */ + reg_w(sd, 0x21, y0 >> 16); /* Y buf.0, high */ + reg_w(sd, 0x24, u0 & 0xffff); /* U buf.0, low */ + reg_w(sd, 0x25, u0 >> 16); /* U buf.0, high */ + reg_w(sd, 0x28, v0 & 0xffff); /* V buf.0, low */ + reg_w(sd, 0x29, v0 >> 16); /* V buf.0, high */ + + reg_w(sd, 0x22, y1 & 0xffff); /* Y buf.1, low */ + reg_w(sd, 0x23, y1 >> 16); /* Y buf.1, high */ + reg_w(sd, 0x26, u1 & 0xffff); /* U buf.1, low */ + reg_w(sd, 0x27, u1 >> 16); /* U buf.1, high */ + reg_w(sd, 0x2a, v1 & 0xffff); /* V buf.1, low */ + reg_w(sd, 0x2b, v1 >> 16); /* V buf.1, high */ + + reg_w(sd, 0x32, y1 & 0xffff); /* JPEG buf 0 low */ + reg_w(sd, 0x33, y1 >> 16); /* JPEG buf 0 high */ + + reg_w(sd, 0x34, y1 & 0xffff); /* JPEG buf 1 low */ + reg_w(sd, 0x35, y1 >> 16); /* JPEG bug 1 high */ + + reg_w(sd, 0x36, 0x0000);/* JPEG restart interval */ + reg_w(sd, 0x37, 0x0804);/*JPEG VLE FIFO threshold*/ + reg_w(sd, 0x38, 0x0000);/* disable hw up-scaling */ + reg_w(sd, 0x3f, 0x0000); /* JPEG/MCTL test data */ +} + +static void w9968cf_set_crop_window(struct sd *sd) +{ + int start_cropx, start_cropy, x, y, fw, fh, cw, ch, + max_width, max_height; + + if (sd->sif) { + max_width = 352; + max_height = 288; + } else { + max_width = 640; + max_height = 480; + } + + if (sd->sensor == SEN_OV7620) { + /* + * Sigh, this is dependend on the clock / framerate changes + * made by the frequency control, sick. + * + * Note we cannot use v4l2_ctrl_g_ctrl here, as we get called + * from ov519.c:setfreq() with the ctrl lock held! + */ + if (sd->freq->val == 1) { + start_cropx = 277; + start_cropy = 37; + } else { + start_cropx = 105; + start_cropy = 37; + } + } else { + start_cropx = 320; + start_cropy = 35; + } + + /* Work around to avoid FP arithmetic */ + #define SC(x) ((x) << 10) + + /* Scaling factors */ + fw = SC(sd->gspca_dev.pixfmt.width) / max_width; + fh = SC(sd->gspca_dev.pixfmt.height) / max_height; + + cw = (fw >= fh) ? max_width : SC(sd->gspca_dev.pixfmt.width) / fh; + ch = (fw >= fh) ? SC(sd->gspca_dev.pixfmt.height) / fw : max_height; + + sd->sensor_width = max_width; + sd->sensor_height = max_height; + + x = (max_width - cw) / 2; + y = (max_height - ch) / 2; + + reg_w(sd, 0x10, start_cropx + x); + reg_w(sd, 0x11, start_cropy + y); + reg_w(sd, 0x12, start_cropx + x + cw); + reg_w(sd, 0x13, start_cropy + y + ch); +} + +static void w9968cf_mode_init_regs(struct sd *sd) +{ + int val, vs_polarity, hs_polarity; + + w9968cf_set_crop_window(sd); + + reg_w(sd, 0x14, sd->gspca_dev.pixfmt.width); + reg_w(sd, 0x15, sd->gspca_dev.pixfmt.height); + + /* JPEG width & height */ + reg_w(sd, 0x30, sd->gspca_dev.pixfmt.width); + reg_w(sd, 0x31, sd->gspca_dev.pixfmt.height); + + /* Y & UV frame buffer strides (in WORD) */ + if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat == + V4L2_PIX_FMT_JPEG) { + reg_w(sd, 0x2c, sd->gspca_dev.pixfmt.width / 2); + reg_w(sd, 0x2d, sd->gspca_dev.pixfmt.width / 4); + } else + reg_w(sd, 0x2c, sd->gspca_dev.pixfmt.width); + + reg_w(sd, 0x00, 0xbf17); /* reset everything */ + reg_w(sd, 0x00, 0xbf10); /* normal operation */ + + /* Transfer size in WORDS (for UYVY format only) */ + val = sd->gspca_dev.pixfmt.width * sd->gspca_dev.pixfmt.height; + reg_w(sd, 0x3d, val & 0xffff); /* low bits */ + reg_w(sd, 0x3e, val >> 16); /* high bits */ + + if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat == + V4L2_PIX_FMT_JPEG) { + /* We may get called multiple times (usb isoc bw negotiat.) */ + jpeg_define(sd->jpeg_hdr, sd->gspca_dev.pixfmt.height, + sd->gspca_dev.pixfmt.width, 0x22); /* JPEG 420 */ + jpeg_set_qual(sd->jpeg_hdr, v4l2_ctrl_g_ctrl(sd->jpegqual)); + w9968cf_upload_quantizationtables(sd); + v4l2_ctrl_grab(sd->jpegqual, true); + } + + /* Video Capture Control Register */ + if (sd->sensor == SEN_OV7620) { + /* Seems to work around a bug in the image sensor */ + vs_polarity = 1; + hs_polarity = 1; + } else { + vs_polarity = 1; + hs_polarity = 0; + } + + val = (vs_polarity << 12) | (hs_polarity << 11); + + /* NOTE: We may not have enough memory to do double buffering while + doing compression (amount of memory differs per model cam). + So we use the second image buffer also as jpeg stream buffer + (see w9968cf_init), and disable double buffering. */ + if (w9968cf_vga_mode[sd->gspca_dev.curr_mode].pixelformat == + V4L2_PIX_FMT_JPEG) { + /* val |= 0x0002; YUV422P */ + val |= 0x0003; /* YUV420P */ + } else + val |= 0x0080; /* Enable HW double buffering */ + + /* val |= 0x0020; enable clamping */ + /* val |= 0x0008; enable (1-2-1) filter */ + /* val |= 0x000c; enable (2-3-6-3-2) filter */ + + val |= 0x8000; /* capt. enable */ + + reg_w(sd, 0x16, val); + + sd->gspca_dev.empty_packet = 0; +} + +static void w9968cf_stop0(struct sd *sd) +{ + v4l2_ctrl_grab(sd->jpegqual, false); + reg_w(sd, 0x39, 0x0000); /* disable JPEG encoder */ + reg_w(sd, 0x16, 0x0000); /* stop video capture */ +} + +/* The w9968cf docs say that a 0 sized packet means EOF (and also SOF + for the next frame). This seems to simply not be true when operating + in JPEG mode, in this case there may be empty packets within the + frame. So in JPEG mode use the JPEG SOI marker to detect SOF. + + Note to make things even more interesting the w9968cf sends *PLANAR* jpeg, + to be precise it sends: SOI, SOF, DRI, SOS, Y-data, SOS, U-data, SOS, + V-data, EOI. */ +static void w9968cf_pkt_scan(struct gspca_dev *gspca_dev, + u8 *data, /* isoc packet */ + int len) /* iso packet length */ +{ + struct sd *sd = (struct sd *) gspca_dev; + + if (w9968cf_vga_mode[gspca_dev->curr_mode].pixelformat == + V4L2_PIX_FMT_JPEG) { + if (len >= 2 && + data[0] == 0xff && + data[1] == 0xd8) { + gspca_frame_add(gspca_dev, LAST_PACKET, + NULL, 0); + gspca_frame_add(gspca_dev, FIRST_PACKET, + sd->jpeg_hdr, JPEG_HDR_SZ); + /* Strip the ff d8, our own header (which adds + huffman and quantization tables) already has this */ + len -= 2; + data += 2; + } + } else { + /* In UYVY mode an empty packet signals EOF */ + if (gspca_dev->empty_packet) { + gspca_frame_add(gspca_dev, LAST_PACKET, + NULL, 0); + gspca_frame_add(gspca_dev, FIRST_PACKET, + NULL, 0); + gspca_dev->empty_packet = 0; + } + } + gspca_frame_add(gspca_dev, INTER_PACKET, data, len); +} -- cgit v1.2.3