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/cx231xx/cx231xx-i2c.c | 598 ++++++++++++++++++++++++++++++++ 1 file changed, 598 insertions(+) create mode 100644 drivers/media/usb/cx231xx/cx231xx-i2c.c (limited to 'drivers/media/usb/cx231xx/cx231xx-i2c.c') diff --git a/drivers/media/usb/cx231xx/cx231xx-i2c.c b/drivers/media/usb/cx231xx/cx231xx-i2c.c new file mode 100644 index 000000000..c6659253c --- /dev/null +++ b/drivers/media/usb/cx231xx/cx231xx-i2c.c @@ -0,0 +1,598 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + cx231xx-i2c.c - driver for Conexant Cx23100/101/102 USB video capture devices + + Copyright (C) 2008 + Based on em28xx driver + Based on Cx23885 driver + + */ + +#include "cx231xx.h" +#include +#include +#include +#include +#include +#include + + +/* ----------------------------------------------------------- */ + +static unsigned int i2c_scan; +module_param(i2c_scan, int, 0444); +MODULE_PARM_DESC(i2c_scan, "scan i2c bus at insmod time"); + +static unsigned int i2c_debug; +module_param(i2c_debug, int, 0644); +MODULE_PARM_DESC(i2c_debug, "enable debug messages [i2c]"); + +#define dprintk1(lvl, fmt, args...) \ +do { \ + if (i2c_debug >= lvl) { \ + printk(fmt, ##args); \ + } \ +} while (0) + +#define dprintk2(lvl, fmt, args...) \ +do { \ + if (i2c_debug >= lvl) { \ + printk(KERN_DEBUG "%s at %s: " fmt, \ + dev->name, __func__ , ##args); \ + } \ +} while (0) + +static inline int get_real_i2c_port(struct cx231xx *dev, int bus_nr) +{ + if (bus_nr == 1) + return dev->port_3_switch_enabled ? I2C_1_MUX_3 : I2C_1_MUX_1; + return bus_nr; +} + +static inline bool is_tuner(struct cx231xx *dev, struct cx231xx_i2c *bus, + const struct i2c_msg *msg, int tuner_type) +{ + int i2c_port = get_real_i2c_port(dev, bus->nr); + + if (i2c_port != dev->board.tuner_i2c_master) + return false; + + if (msg->addr != dev->board.tuner_addr) + return false; + + if (dev->tuner_type != tuner_type) + return false; + + return true; +} + +/* + * cx231xx_i2c_send_bytes() + */ +static int cx231xx_i2c_send_bytes(struct i2c_adapter *i2c_adap, + const struct i2c_msg *msg) +{ + struct cx231xx_i2c *bus = i2c_adap->algo_data; + struct cx231xx *dev = bus->dev; + struct cx231xx_i2c_xfer_data req_data; + int status = 0; + u16 size = 0; + u8 loop = 0; + u8 saddr_len = 1; + u8 *buf_ptr = NULL; + u16 saddr = 0; + u8 need_gpio = 0; + + if (is_tuner(dev, bus, msg, TUNER_XC5000)) { + size = msg->len; + + if (size == 2) { /* register write sub addr */ + /* Just writing sub address will cause problem + * to XC5000. So ignore the request */ + return 0; + } else if (size == 4) { /* register write with sub addr */ + if (msg->len >= 2) + saddr = msg->buf[0] << 8 | msg->buf[1]; + else if (msg->len == 1) + saddr = msg->buf[0]; + + switch (saddr) { + case 0x0000: /* start tuner calibration mode */ + need_gpio = 1; + /* FW Loading is done */ + dev->xc_fw_load_done = 1; + break; + case 0x000D: /* Set signal source */ + case 0x0001: /* Set TV standard - Video */ + case 0x0002: /* Set TV standard - Audio */ + case 0x0003: /* Set RF Frequency */ + need_gpio = 1; + break; + default: + if (dev->xc_fw_load_done) + need_gpio = 1; + break; + } + + if (need_gpio) { + dprintk1(1, + "GPIO WRITE: addr 0x%x, len %d, saddr 0x%x\n", + msg->addr, msg->len, saddr); + + return dev->cx231xx_gpio_i2c_write(dev, + msg->addr, + msg->buf, + msg->len); + } + } + + /* special case for Xc5000 tuner case */ + saddr_len = 1; + + /* adjust the length to correct length */ + size -= saddr_len; + buf_ptr = (u8 *) (msg->buf + 1); + + do { + /* prepare xfer_data struct */ + req_data.dev_addr = msg->addr; + req_data.direction = msg->flags; + req_data.saddr_len = saddr_len; + req_data.saddr_dat = msg->buf[0]; + req_data.buf_size = size > 16 ? 16 : size; + req_data.p_buffer = (u8 *) (buf_ptr + loop * 16); + + bus->i2c_nostop = (size > 16) ? 1 : 0; + bus->i2c_reserve = (loop == 0) ? 0 : 1; + + /* usb send command */ + status = dev->cx231xx_send_usb_command(bus, &req_data); + loop++; + + if (size >= 16) + size -= 16; + else + size = 0; + + } while (size > 0); + + bus->i2c_nostop = 0; + bus->i2c_reserve = 0; + + } else { /* regular case */ + + /* prepare xfer_data struct */ + req_data.dev_addr = msg->addr; + req_data.direction = msg->flags; + req_data.saddr_len = 0; + req_data.saddr_dat = 0; + req_data.buf_size = msg->len; + req_data.p_buffer = msg->buf; + + /* usb send command */ + status = dev->cx231xx_send_usb_command(bus, &req_data); + } + + return status < 0 ? status : 0; +} + +/* + * cx231xx_i2c_recv_bytes() + * read a byte from the i2c device + */ +static int cx231xx_i2c_recv_bytes(struct i2c_adapter *i2c_adap, + const struct i2c_msg *msg) +{ + struct cx231xx_i2c *bus = i2c_adap->algo_data; + struct cx231xx *dev = bus->dev; + struct cx231xx_i2c_xfer_data req_data; + int status = 0; + u16 saddr = 0; + u8 need_gpio = 0; + + if (is_tuner(dev, bus, msg, TUNER_XC5000)) { + if (msg->len == 2) + saddr = msg->buf[0] << 8 | msg->buf[1]; + else if (msg->len == 1) + saddr = msg->buf[0]; + + if (dev->xc_fw_load_done) { + + switch (saddr) { + case 0x0009: /* BUSY check */ + dprintk1(1, + "GPIO R E A D: Special case BUSY check \n"); + /*Try read BUSY register, just set it to zero*/ + msg->buf[0] = 0; + if (msg->len == 2) + msg->buf[1] = 0; + return 0; + case 0x0004: /* read Lock status */ + need_gpio = 1; + break; + + } + + if (need_gpio) { + /* this is a special case to handle Xceive tuner + clock stretch issue with gpio based I2C */ + + dprintk1(1, + "GPIO R E A D: addr 0x%x, len %d, saddr 0x%x\n", + msg->addr, msg->len, + msg->buf[0] << 8 | msg->buf[1]); + + status = + dev->cx231xx_gpio_i2c_write(dev, msg->addr, + msg->buf, + msg->len); + status = + dev->cx231xx_gpio_i2c_read(dev, msg->addr, + msg->buf, + msg->len); + return status; + } + } + + /* prepare xfer_data struct */ + req_data.dev_addr = msg->addr; + req_data.direction = msg->flags; + req_data.saddr_len = msg->len; + req_data.saddr_dat = msg->buf[0] << 8 | msg->buf[1]; + req_data.buf_size = msg->len; + req_data.p_buffer = msg->buf; + + /* usb send command */ + status = dev->cx231xx_send_usb_command(bus, &req_data); + + } else { + + /* prepare xfer_data struct */ + req_data.dev_addr = msg->addr; + req_data.direction = msg->flags; + req_data.saddr_len = 0; + req_data.saddr_dat = 0; + req_data.buf_size = msg->len; + req_data.p_buffer = msg->buf; + + /* usb send command */ + status = dev->cx231xx_send_usb_command(bus, &req_data); + } + + return status < 0 ? status : 0; +} + +/* + * cx231xx_i2c_recv_bytes_with_saddr() + * read a byte from the i2c device + */ +static int cx231xx_i2c_recv_bytes_with_saddr(struct i2c_adapter *i2c_adap, + const struct i2c_msg *msg1, + const struct i2c_msg *msg2) +{ + struct cx231xx_i2c *bus = i2c_adap->algo_data; + struct cx231xx *dev = bus->dev; + struct cx231xx_i2c_xfer_data req_data; + int status = 0; + u16 saddr = 0; + u8 need_gpio = 0; + + if (msg1->len == 2) + saddr = msg1->buf[0] << 8 | msg1->buf[1]; + else if (msg1->len == 1) + saddr = msg1->buf[0]; + + if (is_tuner(dev, bus, msg2, TUNER_XC5000)) { + if ((msg2->len < 16)) { + + dprintk1(1, + "i2c_read: addr 0x%x, len %d, saddr 0x%x, len %d\n", + msg2->addr, msg2->len, saddr, msg1->len); + + switch (saddr) { + case 0x0008: /* read FW load status */ + need_gpio = 1; + break; + case 0x0004: /* read Lock status */ + need_gpio = 1; + break; + } + + if (need_gpio) { + status = + dev->cx231xx_gpio_i2c_write(dev, msg1->addr, + msg1->buf, + msg1->len); + status = + dev->cx231xx_gpio_i2c_read(dev, msg2->addr, + msg2->buf, + msg2->len); + return status; + } + } + } + + /* prepare xfer_data struct */ + req_data.dev_addr = msg2->addr; + req_data.direction = msg2->flags; + req_data.saddr_len = msg1->len; + req_data.saddr_dat = saddr; + req_data.buf_size = msg2->len; + req_data.p_buffer = msg2->buf; + + /* usb send command */ + status = dev->cx231xx_send_usb_command(bus, &req_data); + + return status < 0 ? status : 0; +} + +/* + * cx231xx_i2c_check_for_device() + * check if there is a i2c_device at the supplied address + */ +static int cx231xx_i2c_check_for_device(struct i2c_adapter *i2c_adap, + const struct i2c_msg *msg) +{ + struct cx231xx_i2c *bus = i2c_adap->algo_data; + struct cx231xx *dev = bus->dev; + struct cx231xx_i2c_xfer_data req_data; + int status = 0; + u8 buf[1]; + + /* prepare xfer_data struct */ + req_data.dev_addr = msg->addr; + req_data.direction = I2C_M_RD; + req_data.saddr_len = 0; + req_data.saddr_dat = 0; + req_data.buf_size = 1; + req_data.p_buffer = buf; + + /* usb send command */ + status = dev->cx231xx_send_usb_command(bus, &req_data); + + return status < 0 ? status : 0; +} + +/* + * cx231xx_i2c_xfer() + * the main i2c transfer function + */ +static int cx231xx_i2c_xfer(struct i2c_adapter *i2c_adap, + struct i2c_msg msgs[], int num) +{ + struct cx231xx_i2c *bus = i2c_adap->algo_data; + struct cx231xx *dev = bus->dev; + int addr, rc, i, byte; + + mutex_lock(&dev->i2c_lock); + for (i = 0; i < num; i++) { + + addr = msgs[i].addr; + + dprintk2(2, "%s %s addr=0x%x len=%d:", + (msgs[i].flags & I2C_M_RD) ? "read" : "write", + i == num - 1 ? "stop" : "nonstop", addr, msgs[i].len); + if (!msgs[i].len) { + /* no len: check only for device presence */ + rc = cx231xx_i2c_check_for_device(i2c_adap, &msgs[i]); + if (rc < 0) { + dprintk2(2, " no device\n"); + mutex_unlock(&dev->i2c_lock); + return rc; + } + + } else if (msgs[i].flags & I2C_M_RD) { + /* read bytes */ + rc = cx231xx_i2c_recv_bytes(i2c_adap, &msgs[i]); + if (i2c_debug >= 2) { + for (byte = 0; byte < msgs[i].len; byte++) + printk(KERN_CONT " %02x", msgs[i].buf[byte]); + } + } else if (i + 1 < num && (msgs[i + 1].flags & I2C_M_RD) && + msgs[i].addr == msgs[i + 1].addr + && (msgs[i].len <= 2) && (bus->nr < 3)) { + /* write bytes */ + if (i2c_debug >= 2) { + for (byte = 0; byte < msgs[i].len; byte++) + printk(KERN_CONT " %02x", msgs[i].buf[byte]); + printk(KERN_CONT "\n"); + } + /* read bytes */ + dprintk2(2, "plus %s %s addr=0x%x len=%d:", + (msgs[i+1].flags & I2C_M_RD) ? "read" : "write", + i+1 == num - 1 ? "stop" : "nonstop", addr, msgs[i+1].len); + rc = cx231xx_i2c_recv_bytes_with_saddr(i2c_adap, + &msgs[i], + &msgs[i + 1]); + if (i2c_debug >= 2) { + for (byte = 0; byte < msgs[i+1].len; byte++) + printk(KERN_CONT " %02x", msgs[i+1].buf[byte]); + } + i++; + } else { + /* write bytes */ + if (i2c_debug >= 2) { + for (byte = 0; byte < msgs[i].len; byte++) + printk(KERN_CONT " %02x", msgs[i].buf[byte]); + } + rc = cx231xx_i2c_send_bytes(i2c_adap, &msgs[i]); + } + if (rc < 0) + goto err; + if (i2c_debug >= 2) + printk(KERN_CONT "\n"); + } + mutex_unlock(&dev->i2c_lock); + return num; +err: + dprintk2(2, " ERROR: %i\n", rc); + mutex_unlock(&dev->i2c_lock); + return rc; +} + +/* ----------------------------------------------------------- */ + +/* + * functionality() + */ +static u32 functionality(struct i2c_adapter *adap) +{ + return I2C_FUNC_SMBUS_EMUL | I2C_FUNC_I2C; +} + +static const struct i2c_algorithm cx231xx_algo = { + .master_xfer = cx231xx_i2c_xfer, + .functionality = functionality, +}; + +static const struct i2c_adapter cx231xx_adap_template = { + .owner = THIS_MODULE, + .name = "cx231xx", + .algo = &cx231xx_algo, +}; + +/* ----------------------------------------------------------- */ + +/* + * i2c_devs + * incomplete list of known devices + */ +static const char *i2c_devs[128] = { + [0x20 >> 1] = "demod", + [0x60 >> 1] = "colibri", + [0x88 >> 1] = "hammerhead", + [0x8e >> 1] = "CIR", + [0x32 >> 1] = "GeminiIII", + [0x02 >> 1] = "Aquarius", + [0xa0 >> 1] = "eeprom", + [0xc0 >> 1] = "tuner", + [0xc2 >> 1] = "tuner", +}; + +/* + * cx231xx_do_i2c_scan() + * check i2c address range for devices + */ +void cx231xx_do_i2c_scan(struct cx231xx *dev, int i2c_port) +{ + unsigned char buf; + int i, rc; + struct i2c_adapter *adap; + struct i2c_msg msg = { + .flags = I2C_M_RD, + .len = 1, + .buf = &buf, + }; + + if (!i2c_scan) + return; + + /* Don't generate I2C errors during scan */ + dev->i2c_scan_running = true; + adap = cx231xx_get_i2c_adap(dev, i2c_port); + + for (i = 0; i < 128; i++) { + msg.addr = i; + rc = i2c_transfer(adap, &msg, 1); + + if (rc < 0) + continue; + dev_info(dev->dev, + "i2c scan: found device @ port %d addr 0x%x [%s]\n", + i2c_port, + i << 1, + i2c_devs[i] ? i2c_devs[i] : "???"); + } + + dev->i2c_scan_running = false; +} + +/* + * cx231xx_i2c_register() + * register i2c bus + */ +int cx231xx_i2c_register(struct cx231xx_i2c *bus) +{ + struct cx231xx *dev = bus->dev; + + if (!dev->cx231xx_send_usb_command) + return -EINVAL; + + bus->i2c_adap = cx231xx_adap_template; + bus->i2c_adap.dev.parent = dev->dev; + + snprintf(bus->i2c_adap.name, sizeof(bus->i2c_adap.name), "%s-%d", bus->dev->name, bus->nr); + + bus->i2c_adap.algo_data = bus; + i2c_set_adapdata(&bus->i2c_adap, &dev->v4l2_dev); + bus->i2c_rc = i2c_add_adapter(&bus->i2c_adap); + + if (0 != bus->i2c_rc) + dev_warn(dev->dev, + "i2c bus %d register FAILED\n", bus->nr); + + return bus->i2c_rc; +} + +/* + * cx231xx_i2c_unregister() + * unregister i2c_bus + */ +void cx231xx_i2c_unregister(struct cx231xx_i2c *bus) +{ + if (!bus->i2c_rc) + i2c_del_adapter(&bus->i2c_adap); +} + +/* + * cx231xx_i2c_mux_select() + * switch i2c master number 1 between port1 and port3 + */ +static int cx231xx_i2c_mux_select(struct i2c_mux_core *muxc, u32 chan_id) +{ + struct cx231xx *dev = i2c_mux_priv(muxc); + + return cx231xx_enable_i2c_port_3(dev, chan_id); +} + +int cx231xx_i2c_mux_create(struct cx231xx *dev) +{ + dev->muxc = i2c_mux_alloc(&dev->i2c_bus[1].i2c_adap, dev->dev, 2, 0, 0, + cx231xx_i2c_mux_select, NULL); + if (!dev->muxc) + return -ENOMEM; + dev->muxc->priv = dev; + return 0; +} + +int cx231xx_i2c_mux_register(struct cx231xx *dev, int mux_no) +{ + return i2c_mux_add_adapter(dev->muxc, + 0, + mux_no /* chan_id */, + 0 /* class */); +} + +void cx231xx_i2c_mux_unregister(struct cx231xx *dev) +{ + i2c_mux_del_adapters(dev->muxc); +} + +struct i2c_adapter *cx231xx_get_i2c_adap(struct cx231xx *dev, int i2c_port) +{ + switch (i2c_port) { + case I2C_0: + return &dev->i2c_bus[0].i2c_adap; + case I2C_1: + return &dev->i2c_bus[1].i2c_adap; + case I2C_2: + return &dev->i2c_bus[2].i2c_adap; + case I2C_1_MUX_1: + return dev->muxc->adapter[0]; + case I2C_1_MUX_3: + return dev->muxc->adapter[1]; + default: + BUG(); + } +} +EXPORT_SYMBOL_GPL(cx231xx_get_i2c_adap); -- cgit v1.2.3