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/tuners/e4000.c | 741 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 741 insertions(+) create mode 100644 drivers/media/tuners/e4000.c (limited to 'drivers/media/tuners/e4000.c') diff --git a/drivers/media/tuners/e4000.c b/drivers/media/tuners/e4000.c new file mode 100644 index 000000000..7c269f315 --- /dev/null +++ b/drivers/media/tuners/e4000.c @@ -0,0 +1,741 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Elonics E4000 silicon tuner driver + * + * Copyright (C) 2012 Antti Palosaari + */ + +#include "e4000_priv.h" + +static int e4000_init(struct e4000_dev *dev) +{ + struct i2c_client *client = dev->client; + int ret; + + dev_dbg(&client->dev, "\n"); + + /* reset */ + ret = regmap_write(dev->regmap, 0x00, 0x01); + if (ret) + goto err; + + /* disable output clock */ + ret = regmap_write(dev->regmap, 0x06, 0x00); + if (ret) + goto err; + + ret = regmap_write(dev->regmap, 0x7a, 0x96); + if (ret) + goto err; + + /* configure gains */ + ret = regmap_bulk_write(dev->regmap, 0x7e, "\x01\xfe", 2); + if (ret) + goto err; + + ret = regmap_write(dev->regmap, 0x82, 0x00); + if (ret) + goto err; + + ret = regmap_write(dev->regmap, 0x24, 0x05); + if (ret) + goto err; + + ret = regmap_bulk_write(dev->regmap, 0x87, "\x20\x01", 2); + if (ret) + goto err; + + ret = regmap_bulk_write(dev->regmap, 0x9f, "\x7f\x07", 2); + if (ret) + goto err; + + /* DC offset control */ + ret = regmap_write(dev->regmap, 0x2d, 0x1f); + if (ret) + goto err; + + ret = regmap_bulk_write(dev->regmap, 0x70, "\x01\x01", 2); + if (ret) + goto err; + + /* gain control */ + ret = regmap_write(dev->regmap, 0x1a, 0x17); + if (ret) + goto err; + + ret = regmap_write(dev->regmap, 0x1f, 0x1a); + if (ret) + goto err; + + dev->active = true; + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int e4000_sleep(struct e4000_dev *dev) +{ + struct i2c_client *client = dev->client; + int ret; + + dev_dbg(&client->dev, "\n"); + + dev->active = false; + + ret = regmap_write(dev->regmap, 0x00, 0x00); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int e4000_set_params(struct e4000_dev *dev) +{ + struct i2c_client *client = dev->client; + int ret, i; + unsigned int div_n, k, k_cw, div_out; + u64 f_vco; + u8 buf[5], i_data[4], q_data[4]; + + if (!dev->active) { + dev_dbg(&client->dev, "tuner is sleeping\n"); + return 0; + } + + /* gain control manual */ + ret = regmap_write(dev->regmap, 0x1a, 0x00); + if (ret) + goto err; + + /* + * Fractional-N synthesizer + * + * +----------------------------+ + * v | + * Fref +----+ +-------+ +------+ +---+ + * ------> | PD | --> | VCO | ------> | /N.F | <-- | K | + * +----+ +-------+ +------+ +---+ + * | + * | + * v + * +-------+ Fout + * | /Rout | ------> + * +-------+ + */ + for (i = 0; i < ARRAY_SIZE(e4000_pll_lut); i++) { + if (dev->f_frequency <= e4000_pll_lut[i].freq) + break; + } + if (i == ARRAY_SIZE(e4000_pll_lut)) { + ret = -EINVAL; + goto err; + } + + #define F_REF dev->clk + div_out = e4000_pll_lut[i].div_out; + f_vco = (u64) dev->f_frequency * div_out; + /* calculate PLL integer and fractional control word */ + div_n = div_u64_rem(f_vco, F_REF, &k); + k_cw = div_u64((u64) k * 0x10000, F_REF); + + dev_dbg(&client->dev, + "frequency=%u bandwidth=%u f_vco=%llu F_REF=%u div_n=%u k=%u k_cw=%04x div_out=%u\n", + dev->f_frequency, dev->f_bandwidth, f_vco, F_REF, div_n, k, + k_cw, div_out); + + buf[0] = div_n; + buf[1] = (k_cw >> 0) & 0xff; + buf[2] = (k_cw >> 8) & 0xff; + buf[3] = 0x00; + buf[4] = e4000_pll_lut[i].div_out_reg; + ret = regmap_bulk_write(dev->regmap, 0x09, buf, 5); + if (ret) + goto err; + + /* LNA filter (RF filter) */ + for (i = 0; i < ARRAY_SIZE(e400_lna_filter_lut); i++) { + if (dev->f_frequency <= e400_lna_filter_lut[i].freq) + break; + } + if (i == ARRAY_SIZE(e400_lna_filter_lut)) { + ret = -EINVAL; + goto err; + } + + ret = regmap_write(dev->regmap, 0x10, e400_lna_filter_lut[i].val); + if (ret) + goto err; + + /* IF filters */ + for (i = 0; i < ARRAY_SIZE(e4000_if_filter_lut); i++) { + if (dev->f_bandwidth <= e4000_if_filter_lut[i].freq) + break; + } + if (i == ARRAY_SIZE(e4000_if_filter_lut)) { + ret = -EINVAL; + goto err; + } + + buf[0] = e4000_if_filter_lut[i].reg11_val; + buf[1] = e4000_if_filter_lut[i].reg12_val; + + ret = regmap_bulk_write(dev->regmap, 0x11, buf, 2); + if (ret) + goto err; + + /* frequency band */ + for (i = 0; i < ARRAY_SIZE(e4000_band_lut); i++) { + if (dev->f_frequency <= e4000_band_lut[i].freq) + break; + } + if (i == ARRAY_SIZE(e4000_band_lut)) { + ret = -EINVAL; + goto err; + } + + ret = regmap_write(dev->regmap, 0x07, e4000_band_lut[i].reg07_val); + if (ret) + goto err; + + ret = regmap_write(dev->regmap, 0x78, e4000_band_lut[i].reg78_val); + if (ret) + goto err; + + /* DC offset */ + for (i = 0; i < 4; i++) { + if (i == 0) + ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7e\x24", 3); + else if (i == 1) + ret = regmap_bulk_write(dev->regmap, 0x15, "\x00\x7f", 2); + else if (i == 2) + ret = regmap_bulk_write(dev->regmap, 0x15, "\x01", 1); + else + ret = regmap_bulk_write(dev->regmap, 0x16, "\x7e", 1); + + if (ret) + goto err; + + ret = regmap_write(dev->regmap, 0x29, 0x01); + if (ret) + goto err; + + ret = regmap_bulk_read(dev->regmap, 0x2a, buf, 3); + if (ret) + goto err; + + i_data[i] = (((buf[2] >> 0) & 0x3) << 6) | (buf[0] & 0x3f); + q_data[i] = (((buf[2] >> 4) & 0x3) << 6) | (buf[1] & 0x3f); + } + + swap(q_data[2], q_data[3]); + swap(i_data[2], i_data[3]); + + ret = regmap_bulk_write(dev->regmap, 0x50, q_data, 4); + if (ret) + goto err; + + ret = regmap_bulk_write(dev->regmap, 0x60, i_data, 4); + if (ret) + goto err; + + /* gain control auto */ + ret = regmap_write(dev->regmap, 0x1a, 0x17); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +/* + * V4L2 API + */ +#if IS_ENABLED(CONFIG_VIDEO_DEV) +static const struct v4l2_frequency_band bands[] = { + { + .type = V4L2_TUNER_RF, + .index = 0, + .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, + .rangelow = 59000000, + .rangehigh = 1105000000, + }, + { + .type = V4L2_TUNER_RF, + .index = 1, + .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, + .rangelow = 1249000000, + .rangehigh = 2208000000UL, + }, +}; + +static inline struct e4000_dev *e4000_subdev_to_dev(struct v4l2_subdev *sd) +{ + return container_of(sd, struct e4000_dev, sd); +} + +static int e4000_standby(struct v4l2_subdev *sd) +{ + struct e4000_dev *dev = e4000_subdev_to_dev(sd); + int ret; + + ret = e4000_sleep(dev); + if (ret) + return ret; + + return e4000_set_params(dev); +} + +static int e4000_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *v) +{ + struct e4000_dev *dev = e4000_subdev_to_dev(sd); + struct i2c_client *client = dev->client; + + dev_dbg(&client->dev, "index=%d\n", v->index); + + strscpy(v->name, "Elonics E4000", sizeof(v->name)); + v->type = V4L2_TUNER_RF; + v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; + v->rangelow = bands[0].rangelow; + v->rangehigh = bands[1].rangehigh; + return 0; +} + +static int e4000_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *v) +{ + struct e4000_dev *dev = e4000_subdev_to_dev(sd); + struct i2c_client *client = dev->client; + + dev_dbg(&client->dev, "index=%d\n", v->index); + return 0; +} + +static int e4000_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) +{ + struct e4000_dev *dev = e4000_subdev_to_dev(sd); + struct i2c_client *client = dev->client; + + dev_dbg(&client->dev, "tuner=%d\n", f->tuner); + f->frequency = dev->f_frequency; + return 0; +} + +static int e4000_s_frequency(struct v4l2_subdev *sd, + const struct v4l2_frequency *f) +{ + struct e4000_dev *dev = e4000_subdev_to_dev(sd); + struct i2c_client *client = dev->client; + + dev_dbg(&client->dev, "tuner=%d type=%d frequency=%u\n", + f->tuner, f->type, f->frequency); + + dev->f_frequency = clamp_t(unsigned int, f->frequency, + bands[0].rangelow, bands[1].rangehigh); + return e4000_set_params(dev); +} + +static int e4000_enum_freq_bands(struct v4l2_subdev *sd, + struct v4l2_frequency_band *band) +{ + struct e4000_dev *dev = e4000_subdev_to_dev(sd); + struct i2c_client *client = dev->client; + + dev_dbg(&client->dev, "tuner=%d type=%d index=%d\n", + band->tuner, band->type, band->index); + + if (band->index >= ARRAY_SIZE(bands)) + return -EINVAL; + + band->capability = bands[band->index].capability; + band->rangelow = bands[band->index].rangelow; + band->rangehigh = bands[band->index].rangehigh; + return 0; +} + +static const struct v4l2_subdev_tuner_ops e4000_subdev_tuner_ops = { + .standby = e4000_standby, + .g_tuner = e4000_g_tuner, + .s_tuner = e4000_s_tuner, + .g_frequency = e4000_g_frequency, + .s_frequency = e4000_s_frequency, + .enum_freq_bands = e4000_enum_freq_bands, +}; + +static const struct v4l2_subdev_ops e4000_subdev_ops = { + .tuner = &e4000_subdev_tuner_ops, +}; + +static int e4000_set_lna_gain(struct dvb_frontend *fe) +{ + struct e4000_dev *dev = fe->tuner_priv; + struct i2c_client *client = dev->client; + int ret; + u8 u8tmp; + + dev_dbg(&client->dev, "lna auto=%d->%d val=%d->%d\n", + dev->lna_gain_auto->cur.val, dev->lna_gain_auto->val, + dev->lna_gain->cur.val, dev->lna_gain->val); + + if (dev->lna_gain_auto->val && dev->if_gain_auto->cur.val) + u8tmp = 0x17; + else if (dev->lna_gain_auto->val) + u8tmp = 0x19; + else if (dev->if_gain_auto->cur.val) + u8tmp = 0x16; + else + u8tmp = 0x10; + + ret = regmap_write(dev->regmap, 0x1a, u8tmp); + if (ret) + goto err; + + if (dev->lna_gain_auto->val == false) { + ret = regmap_write(dev->regmap, 0x14, dev->lna_gain->val); + if (ret) + goto err; + } + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int e4000_set_mixer_gain(struct dvb_frontend *fe) +{ + struct e4000_dev *dev = fe->tuner_priv; + struct i2c_client *client = dev->client; + int ret; + u8 u8tmp; + + dev_dbg(&client->dev, "mixer auto=%d->%d val=%d->%d\n", + dev->mixer_gain_auto->cur.val, dev->mixer_gain_auto->val, + dev->mixer_gain->cur.val, dev->mixer_gain->val); + + if (dev->mixer_gain_auto->val) + u8tmp = 0x15; + else + u8tmp = 0x14; + + ret = regmap_write(dev->regmap, 0x20, u8tmp); + if (ret) + goto err; + + if (dev->mixer_gain_auto->val == false) { + ret = regmap_write(dev->regmap, 0x15, dev->mixer_gain->val); + if (ret) + goto err; + } + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int e4000_set_if_gain(struct dvb_frontend *fe) +{ + struct e4000_dev *dev = fe->tuner_priv; + struct i2c_client *client = dev->client; + int ret; + u8 buf[2]; + u8 u8tmp; + + dev_dbg(&client->dev, "if auto=%d->%d val=%d->%d\n", + dev->if_gain_auto->cur.val, dev->if_gain_auto->val, + dev->if_gain->cur.val, dev->if_gain->val); + + if (dev->if_gain_auto->val && dev->lna_gain_auto->cur.val) + u8tmp = 0x17; + else if (dev->lna_gain_auto->cur.val) + u8tmp = 0x19; + else if (dev->if_gain_auto->val) + u8tmp = 0x16; + else + u8tmp = 0x10; + + ret = regmap_write(dev->regmap, 0x1a, u8tmp); + if (ret) + goto err; + + if (dev->if_gain_auto->val == false) { + buf[0] = e4000_if_gain_lut[dev->if_gain->val].reg16_val; + buf[1] = e4000_if_gain_lut[dev->if_gain->val].reg17_val; + ret = regmap_bulk_write(dev->regmap, 0x16, buf, 2); + if (ret) + goto err; + } + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int e4000_pll_lock(struct dvb_frontend *fe) +{ + struct e4000_dev *dev = fe->tuner_priv; + struct i2c_client *client = dev->client; + int ret; + unsigned int uitmp; + + ret = regmap_read(dev->regmap, 0x07, &uitmp); + if (ret) + goto err; + + dev->pll_lock->val = (uitmp & 0x01); + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int e4000_g_volatile_ctrl(struct v4l2_ctrl *ctrl) +{ + struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl); + struct i2c_client *client = dev->client; + int ret; + + if (!dev->active) + return 0; + + switch (ctrl->id) { + case V4L2_CID_RF_TUNER_PLL_LOCK: + ret = e4000_pll_lock(dev->fe); + break; + default: + dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n", + ctrl->id, ctrl->name); + ret = -EINVAL; + } + + return ret; +} + +static int e4000_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct e4000_dev *dev = container_of(ctrl->handler, struct e4000_dev, hdl); + struct i2c_client *client = dev->client; + int ret; + + if (!dev->active) + return 0; + + switch (ctrl->id) { + case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: + case V4L2_CID_RF_TUNER_BANDWIDTH: + /* + * TODO: Auto logic does not work 100% correctly as tuner driver + * do not have information to calculate maximum suitable + * bandwidth. Calculating it is responsible of master driver. + */ + dev->f_bandwidth = dev->bandwidth->val; + ret = e4000_set_params(dev); + break; + case V4L2_CID_RF_TUNER_LNA_GAIN_AUTO: + case V4L2_CID_RF_TUNER_LNA_GAIN: + ret = e4000_set_lna_gain(dev->fe); + break; + case V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO: + case V4L2_CID_RF_TUNER_MIXER_GAIN: + ret = e4000_set_mixer_gain(dev->fe); + break; + case V4L2_CID_RF_TUNER_IF_GAIN_AUTO: + case V4L2_CID_RF_TUNER_IF_GAIN: + ret = e4000_set_if_gain(dev->fe); + break; + default: + dev_dbg(&client->dev, "unknown ctrl: id=%d name=%s\n", + ctrl->id, ctrl->name); + ret = -EINVAL; + } + + return ret; +} + +static const struct v4l2_ctrl_ops e4000_ctrl_ops = { + .g_volatile_ctrl = e4000_g_volatile_ctrl, + .s_ctrl = e4000_s_ctrl, +}; +#endif + +/* + * DVB API + */ +static int e4000_dvb_set_params(struct dvb_frontend *fe) +{ + struct e4000_dev *dev = fe->tuner_priv; + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + + dev->f_frequency = c->frequency; + dev->f_bandwidth = c->bandwidth_hz; + return e4000_set_params(dev); +} + +static int e4000_dvb_init(struct dvb_frontend *fe) +{ + return e4000_init(fe->tuner_priv); +} + +static int e4000_dvb_sleep(struct dvb_frontend *fe) +{ + return e4000_sleep(fe->tuner_priv); +} + +static int e4000_dvb_get_if_frequency(struct dvb_frontend *fe, u32 *frequency) +{ + *frequency = 0; /* Zero-IF */ + return 0; +} + +static const struct dvb_tuner_ops e4000_dvb_tuner_ops = { + .info = { + .name = "Elonics E4000", + .frequency_min_hz = 174 * MHz, + .frequency_max_hz = 862 * MHz, + }, + + .init = e4000_dvb_init, + .sleep = e4000_dvb_sleep, + .set_params = e4000_dvb_set_params, + + .get_if_frequency = e4000_dvb_get_if_frequency, +}; + +static int e4000_probe(struct i2c_client *client) +{ + struct e4000_dev *dev; + struct e4000_config *cfg = client->dev.platform_data; + struct dvb_frontend *fe = cfg->fe; + int ret; + unsigned int uitmp; + static const struct regmap_config regmap_config = { + .reg_bits = 8, + .val_bits = 8, + }; + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + ret = -ENOMEM; + goto err; + } + + dev->clk = cfg->clock; + dev->client = client; + dev->fe = cfg->fe; + dev->regmap = devm_regmap_init_i2c(client, ®map_config); + if (IS_ERR(dev->regmap)) { + ret = PTR_ERR(dev->regmap); + goto err_kfree; + } + + /* check if the tuner is there */ + ret = regmap_read(dev->regmap, 0x02, &uitmp); + if (ret) + goto err_kfree; + + dev_dbg(&client->dev, "chip id=%02x\n", uitmp); + + if (uitmp != 0x40) { + ret = -ENODEV; + goto err_kfree; + } + + /* put sleep as chip seems to be in normal mode by default */ + ret = regmap_write(dev->regmap, 0x00, 0x00); + if (ret) + goto err_kfree; + +#if IS_ENABLED(CONFIG_VIDEO_DEV) + /* Register controls */ + v4l2_ctrl_handler_init(&dev->hdl, 9); + dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, + V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1); + dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, + V4L2_CID_RF_TUNER_BANDWIDTH, 4300000, 11000000, 100000, 4300000); + v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); + dev->lna_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, + V4L2_CID_RF_TUNER_LNA_GAIN_AUTO, 0, 1, 1, 1); + dev->lna_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, + V4L2_CID_RF_TUNER_LNA_GAIN, 0, 15, 1, 10); + v4l2_ctrl_auto_cluster(2, &dev->lna_gain_auto, 0, false); + dev->mixer_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, + V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO, 0, 1, 1, 1); + dev->mixer_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, + V4L2_CID_RF_TUNER_MIXER_GAIN, 0, 1, 1, 1); + v4l2_ctrl_auto_cluster(2, &dev->mixer_gain_auto, 0, false); + dev->if_gain_auto = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, + V4L2_CID_RF_TUNER_IF_GAIN_AUTO, 0, 1, 1, 1); + dev->if_gain = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, + V4L2_CID_RF_TUNER_IF_GAIN, 0, 54, 1, 0); + v4l2_ctrl_auto_cluster(2, &dev->if_gain_auto, 0, false); + dev->pll_lock = v4l2_ctrl_new_std(&dev->hdl, &e4000_ctrl_ops, + V4L2_CID_RF_TUNER_PLL_LOCK, 0, 1, 1, 0); + if (dev->hdl.error) { + ret = dev->hdl.error; + dev_err(&client->dev, "Could not initialize controls\n"); + v4l2_ctrl_handler_free(&dev->hdl); + goto err_kfree; + } + + dev->sd.ctrl_handler = &dev->hdl; + dev->f_frequency = bands[0].rangelow; + dev->f_bandwidth = dev->bandwidth->val; + v4l2_i2c_subdev_init(&dev->sd, client, &e4000_subdev_ops); +#endif + fe->tuner_priv = dev; + memcpy(&fe->ops.tuner_ops, &e4000_dvb_tuner_ops, + sizeof(fe->ops.tuner_ops)); + v4l2_set_subdevdata(&dev->sd, client); + i2c_set_clientdata(client, &dev->sd); + + dev_info(&client->dev, "Elonics E4000 successfully identified\n"); + return 0; +err_kfree: + kfree(dev); +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static void e4000_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct e4000_dev *dev = container_of(sd, struct e4000_dev, sd); + + dev_dbg(&client->dev, "\n"); + +#if IS_ENABLED(CONFIG_VIDEO_DEV) + v4l2_ctrl_handler_free(&dev->hdl); +#endif + kfree(dev); +} + +static const struct i2c_device_id e4000_id_table[] = { + {"e4000", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, e4000_id_table); + +static struct i2c_driver e4000_driver = { + .driver = { + .name = "e4000", + .suppress_bind_attrs = true, + }, + .probe_new = e4000_probe, + .remove = e4000_remove, + .id_table = e4000_id_table, +}; + +module_i2c_driver(e4000_driver); + +MODULE_DESCRIPTION("Elonics E4000 silicon tuner driver"); +MODULE_AUTHOR("Antti Palosaari "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3