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/radio/saa7706h.c | 417 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 417 insertions(+) create mode 100644 drivers/media/radio/saa7706h.c (limited to 'drivers/media/radio/saa7706h.c') diff --git a/drivers/media/radio/saa7706h.c b/drivers/media/radio/saa7706h.c new file mode 100644 index 000000000..3c758a983 --- /dev/null +++ b/drivers/media/radio/saa7706h.c @@ -0,0 +1,417 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * saa7706.c Philips SAA7706H Car Radio DSP driver + * Copyright (c) 2009 Intel Corporation + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DRIVER_NAME "saa7706h" + +/* the I2C memory map looks like this + + $1C00 - $FFFF Not Used + $2200 - $3FFF Reserved YRAM (DSP2) space + $2000 - $21FF YRAM (DSP2) + $1FF0 - $1FFF Hardware Registers + $1280 - $1FEF Reserved XRAM (DSP2) space + $1000 - $127F XRAM (DSP2) + $0FFF DSP CONTROL + $0A00 - $0FFE Reserved + $0980 - $09FF Reserved YRAM (DSP1) space + $0800 - $097F YRAM (DSP1) + $0200 - $07FF Not Used + $0180 - $01FF Reserved XRAM (DSP1) space + $0000 - $017F XRAM (DSP1) +*/ + +#define SAA7706H_REG_CTRL 0x0fff +#define SAA7706H_CTRL_BYP_PLL 0x0001 +#define SAA7706H_CTRL_PLL_DIV_MASK 0x003e +#define SAA7706H_CTRL_PLL3_62975MHZ 0x003e +#define SAA7706H_CTRL_DSP_TURBO 0x0040 +#define SAA7706H_CTRL_PC_RESET_DSP1 0x0080 +#define SAA7706H_CTRL_PC_RESET_DSP2 0x0100 +#define SAA7706H_CTRL_DSP1_ROM_EN_MASK 0x0600 +#define SAA7706H_CTRL_DSP1_FUNC_PROM 0x0000 +#define SAA7706H_CTRL_DSP2_ROM_EN_MASK 0x1800 +#define SAA7706H_CTRL_DSP2_FUNC_PROM 0x0000 +#define SAA7706H_CTRL_DIG_SIL_INTERPOL 0x8000 + +#define SAA7706H_REG_EVALUATION 0x1ff0 +#define SAA7706H_EVAL_DISABLE_CHARGE_PUMP 0x000001 +#define SAA7706H_EVAL_DCS_CLOCK 0x000002 +#define SAA7706H_EVAL_GNDRC1_ENABLE 0x000004 +#define SAA7706H_EVAL_GNDRC2_ENABLE 0x000008 + +#define SAA7706H_REG_CL_GEN1 0x1ff3 +#define SAA7706H_CL_GEN1_MIN_LOOPGAIN_MASK 0x00000f +#define SAA7706H_CL_GEN1_LOOPGAIN_MASK 0x0000f0 +#define SAA7706H_CL_GEN1_COARSE_RATION 0xffff00 + +#define SAA7706H_REG_CL_GEN2 0x1ff4 +#define SAA7706H_CL_GEN2_WSEDGE_FALLING 0x000001 +#define SAA7706H_CL_GEN2_STOP_VCO 0x000002 +#define SAA7706H_CL_GEN2_FRERUN 0x000004 +#define SAA7706H_CL_GEN2_ADAPTIVE 0x000008 +#define SAA7706H_CL_GEN2_FINE_RATIO_MASK 0x0ffff0 + +#define SAA7706H_REG_CL_GEN4 0x1ff6 +#define SAA7706H_CL_GEN4_BYPASS_PLL1 0x001000 +#define SAA7706H_CL_GEN4_PLL1_DIV_MASK 0x03e000 +#define SAA7706H_CL_GEN4_DSP1_TURBO 0x040000 + +#define SAA7706H_REG_SEL 0x1ff7 +#define SAA7706H_SEL_DSP2_SRCA_MASK 0x000007 +#define SAA7706H_SEL_DSP2_FMTA_MASK 0x000031 +#define SAA7706H_SEL_DSP2_SRCB_MASK 0x0001c0 +#define SAA7706H_SEL_DSP2_FMTB_MASK 0x000e00 +#define SAA7706H_SEL_DSP1_SRC_MASK 0x003000 +#define SAA7706H_SEL_DSP1_FMT_MASK 0x01c003 +#define SAA7706H_SEL_SPDIF2 0x020000 +#define SAA7706H_SEL_HOST_IO_FMT_MASK 0x1c0000 +#define SAA7706H_SEL_EN_HOST_IO 0x200000 + +#define SAA7706H_REG_IAC 0x1ff8 +#define SAA7706H_REG_CLK_SET 0x1ff9 +#define SAA7706H_REG_CLK_COEFF 0x1ffa +#define SAA7706H_REG_INPUT_SENS 0x1ffb +#define SAA7706H_INPUT_SENS_RDS_VOL_MASK 0x0003f +#define SAA7706H_INPUT_SENS_FM_VOL_MASK 0x00fc0 +#define SAA7706H_INPUT_SENS_FM_MPX 0x01000 +#define SAA7706H_INPUT_SENS_OFF_FILTER_A_EN 0x02000 +#define SAA7706H_INPUT_SENS_OFF_FILTER_B_EN 0x04000 +#define SAA7706H_REG_PHONE_NAV_AUDIO 0x1ffc +#define SAA7706H_REG_IO_CONF_DSP2 0x1ffd +#define SAA7706H_REG_STATUS_DSP2 0x1ffe +#define SAA7706H_REG_PC_DSP2 0x1fff + +#define SAA7706H_DSP1_MOD0 0x0800 +#define SAA7706H_DSP1_ROM_VER 0x097f +#define SAA7706H_DSP2_MPTR0 0x1000 + +#define SAA7706H_DSP1_MODPNTR 0x0000 + +#define SAA7706H_DSP2_XMEM_CONTLLCW 0x113e +#define SAA7706H_DSP2_XMEM_BUSAMP 0x114a +#define SAA7706H_DSP2_XMEM_FDACPNTR 0x11f9 +#define SAA7706H_DSP2_XMEM_IIS1PNTR 0x11fb + +#define SAA7706H_DSP2_YMEM_PVGA 0x212a +#define SAA7706H_DSP2_YMEM_PVAT1 0x212b +#define SAA7706H_DSP2_YMEM_PVAT 0x212c +#define SAA7706H_DSP2_YMEM_ROM_VER 0x21ff + +#define SUPPORTED_DSP1_ROM_VER 0x667 + +struct saa7706h_state { + struct v4l2_subdev sd; + struct v4l2_ctrl_handler hdl; + unsigned muted; +}; + +static inline struct saa7706h_state *to_state(struct v4l2_subdev *sd) +{ + return container_of(sd, struct saa7706h_state, sd); +} + +static int saa7706h_i2c_send(struct i2c_client *client, const u8 *data, int len) +{ + int err = i2c_master_send(client, data, len); + if (err == len) + return 0; + return err > 0 ? -EIO : err; +} + +static int saa7706h_i2c_transfer(struct i2c_client *client, + struct i2c_msg *msgs, int num) +{ + int err = i2c_transfer(client->adapter, msgs, num); + if (err == num) + return 0; + return err > 0 ? -EIO : err; +} + +static int saa7706h_set_reg24(struct v4l2_subdev *sd, u16 reg, u32 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + u8 buf[5]; + int pos = 0; + + buf[pos++] = reg >> 8; + buf[pos++] = reg; + buf[pos++] = val >> 16; + buf[pos++] = val >> 8; + buf[pos++] = val; + + return saa7706h_i2c_send(client, buf, pos); +} + +static int saa7706h_set_reg24_err(struct v4l2_subdev *sd, u16 reg, u32 val, + int *err) +{ + return *err ? *err : saa7706h_set_reg24(sd, reg, val); +} + +static int saa7706h_set_reg16(struct v4l2_subdev *sd, u16 reg, u16 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + u8 buf[4]; + int pos = 0; + + buf[pos++] = reg >> 8; + buf[pos++] = reg; + buf[pos++] = val >> 8; + buf[pos++] = val; + + return saa7706h_i2c_send(client, buf, pos); +} + +static int saa7706h_set_reg16_err(struct v4l2_subdev *sd, u16 reg, u16 val, + int *err) +{ + return *err ? *err : saa7706h_set_reg16(sd, reg, val); +} + +static int saa7706h_get_reg16(struct v4l2_subdev *sd, u16 reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + u8 buf[2]; + int err; + u8 regaddr[] = {reg >> 8, reg}; + struct i2c_msg msg[] = { + { + .addr = client->addr, + .len = sizeof(regaddr), + .buf = regaddr + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = sizeof(buf), + .buf = buf + } + }; + + err = saa7706h_i2c_transfer(client, msg, ARRAY_SIZE(msg)); + if (err) + return err; + + return buf[0] << 8 | buf[1]; +} + +static int saa7706h_unmute(struct v4l2_subdev *sd) +{ + struct saa7706h_state *state = to_state(sd); + int err = 0; + + err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL, + SAA7706H_CTRL_PLL3_62975MHZ | SAA7706H_CTRL_PC_RESET_DSP1 | + SAA7706H_CTRL_PC_RESET_DSP2, &err); + + /* newer versions of the chip requires a small sleep after reset */ + msleep(1); + + err = saa7706h_set_reg16_err(sd, SAA7706H_REG_CTRL, + SAA7706H_CTRL_PLL3_62975MHZ, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_EVALUATION, 0, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN1, 0x040022, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN2, + SAA7706H_CL_GEN2_WSEDGE_FALLING, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CL_GEN4, 0x024080, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_SEL, 0x200080, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IAC, 0xf4caed, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_SET, 0x124334, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_CLK_COEFF, 0x004a1a, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_INPUT_SENS, 0x0071c7, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PHONE_NAV_AUDIO, + 0x0e22ff, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_IO_CONF_DSP2, 0x001ff8, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_STATUS_DSP2, 0x080003, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_REG_PC_DSP2, 0x000004, &err); + + err = saa7706h_set_reg16_err(sd, SAA7706H_DSP1_MOD0, 0x0c6c, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_MPTR0, 0x000b4b, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x000600, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP1_MODPNTR, 0x0000c0, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000819, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x00085a, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_BUSAMP, 0x7fffff, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_FDACPNTR, 0x2000cb, + &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_IIS1PNTR, 0x2000cb, + &err); + + err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVGA, 0x0f80, &err); + + err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT1, 0x0800, + &err); + + err = saa7706h_set_reg16_err(sd, SAA7706H_DSP2_YMEM_PVAT, 0x0800, &err); + + err = saa7706h_set_reg24_err(sd, SAA7706H_DSP2_XMEM_CONTLLCW, 0x000905, + &err); + if (!err) + state->muted = 0; + return err; +} + +static int saa7706h_mute(struct v4l2_subdev *sd) +{ + struct saa7706h_state *state = to_state(sd); + int err; + + err = saa7706h_set_reg16(sd, SAA7706H_REG_CTRL, + SAA7706H_CTRL_PLL3_62975MHZ | SAA7706H_CTRL_PC_RESET_DSP1 | + SAA7706H_CTRL_PC_RESET_DSP2); + if (!err) + state->muted = 1; + return err; +} + +static int saa7706h_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct saa7706h_state *state = + container_of(ctrl->handler, struct saa7706h_state, hdl); + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + if (ctrl->val) + return saa7706h_mute(&state->sd); + return saa7706h_unmute(&state->sd); + } + return -EINVAL; +} + +static const struct v4l2_ctrl_ops saa7706h_ctrl_ops = { + .s_ctrl = saa7706h_s_ctrl, +}; + +static const struct v4l2_subdev_ops empty_ops = {}; + +/* + * Generic i2c probe + * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' + */ + +static int saa7706h_probe(struct i2c_client *client) +{ + struct saa7706h_state *state; + struct v4l2_subdev *sd; + int err; + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + + v4l_info(client, "chip found @ 0x%02x (%s)\n", + client->addr << 1, client->adapter->name); + + state = kzalloc(sizeof(struct saa7706h_state), GFP_KERNEL); + if (state == NULL) + return -ENOMEM; + sd = &state->sd; + v4l2_i2c_subdev_init(sd, client, &empty_ops); + + v4l2_ctrl_handler_init(&state->hdl, 4); + v4l2_ctrl_new_std(&state->hdl, &saa7706h_ctrl_ops, + V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); + sd->ctrl_handler = &state->hdl; + err = state->hdl.error; + if (err) + goto err; + + /* check the rom versions */ + err = saa7706h_get_reg16(sd, SAA7706H_DSP1_ROM_VER); + if (err < 0) + goto err; + if (err != SUPPORTED_DSP1_ROM_VER) + v4l2_warn(sd, "Unknown DSP1 ROM code version: 0x%x\n", err); + state->muted = 1; + + /* startup in a muted state */ + err = saa7706h_mute(sd); + if (err) + goto err; + + return 0; + +err: + v4l2_device_unregister_subdev(sd); + v4l2_ctrl_handler_free(&state->hdl); + kfree(to_state(sd)); + + printk(KERN_ERR DRIVER_NAME ": Failed to probe: %d\n", err); + + return err; +} + +static void saa7706h_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct saa7706h_state *state = to_state(sd); + + saa7706h_mute(sd); + v4l2_device_unregister_subdev(sd); + v4l2_ctrl_handler_free(&state->hdl); + kfree(to_state(sd)); +} + +static const struct i2c_device_id saa7706h_id[] = { + {DRIVER_NAME, 0}, + {}, +}; + +MODULE_DEVICE_TABLE(i2c, saa7706h_id); + +static struct i2c_driver saa7706h_driver = { + .driver = { + .name = DRIVER_NAME, + }, + .probe_new = saa7706h_probe, + .remove = saa7706h_remove, + .id_table = saa7706h_id, +}; + +module_i2c_driver(saa7706h_driver); + +MODULE_DESCRIPTION("SAA7706H Car Radio DSP driver"); +MODULE_AUTHOR("Mocean Laboratories"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3