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/regulator/fan53555.c | 676 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 676 insertions(+) create mode 100644 drivers/regulator/fan53555.c (limited to 'drivers/regulator/fan53555.c') diff --git a/drivers/regulator/fan53555.c b/drivers/regulator/fan53555.c new file mode 100644 index 000000000..529963a7e --- /dev/null +++ b/drivers/regulator/fan53555.c @@ -0,0 +1,676 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// FAN53555 Fairchild Digitally Programmable TinyBuck Regulator Driver. +// +// Supported Part Numbers: +// FAN53555UC00X/01X/03X/04X/05X +// +// Copyright (c) 2012 Marvell Technology Ltd. +// Yunfan Zhang + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* Voltage setting */ +#define FAN53555_VSEL0 0x00 +#define FAN53555_VSEL1 0x01 + +#define TCS4525_VSEL0 0x11 +#define TCS4525_VSEL1 0x10 +#define TCS4525_TIME 0x13 +#define TCS4525_COMMAND 0x14 + +/* Control register */ +#define FAN53555_CONTROL 0x02 +/* IC Type */ +#define FAN53555_ID1 0x03 +/* IC mask version */ +#define FAN53555_ID2 0x04 +/* Monitor register */ +#define FAN53555_MONITOR 0x05 + +/* VSEL bit definitions */ +#define VSEL_BUCK_EN (1 << 7) +#define VSEL_MODE (1 << 6) +/* Chip ID and Verison */ +#define DIE_ID 0x0F /* ID1 */ +#define DIE_REV 0x0F /* ID2 */ +/* Control bit definitions */ +#define CTL_OUTPUT_DISCHG (1 << 7) +#define CTL_SLEW_MASK (0x7 << 4) +#define CTL_SLEW_SHIFT 4 +#define CTL_RESET (1 << 2) +#define CTL_MODE_VSEL0_MODE BIT(0) +#define CTL_MODE_VSEL1_MODE BIT(1) + +#define FAN53555_NVOLTAGES 64 /* Numbers of voltages */ +#define FAN53526_NVOLTAGES 128 + +#define TCS_VSEL0_MODE (1 << 7) +#define TCS_VSEL1_MODE (1 << 6) + +#define TCS_SLEW_SHIFT 3 +#define TCS_SLEW_MASK (0x3 < 3) + +enum fan53555_vendor { + FAN53526_VENDOR_FAIRCHILD = 0, + FAN53555_VENDOR_FAIRCHILD, + FAN53555_VENDOR_SILERGY, + FAN53526_VENDOR_TCS, +}; + +enum { + FAN53526_CHIP_ID_01 = 1, +}; + +enum { + FAN53526_CHIP_REV_08 = 8, +}; + +/* IC Type */ +enum { + FAN53555_CHIP_ID_00 = 0, + FAN53555_CHIP_ID_01, + FAN53555_CHIP_ID_02, + FAN53555_CHIP_ID_03, + FAN53555_CHIP_ID_04, + FAN53555_CHIP_ID_05, + FAN53555_CHIP_ID_08 = 8, +}; + +enum { + TCS4525_CHIP_ID_12 = 12, +}; + +enum { + TCS4526_CHIP_ID_00 = 0, +}; + +/* IC mask revision */ +enum { + FAN53555_CHIP_REV_00 = 0x3, + FAN53555_CHIP_REV_13 = 0xf, +}; + +enum { + SILERGY_SYR82X = 8, + SILERGY_SYR83X = 9, +}; + +struct fan53555_device_info { + enum fan53555_vendor vendor; + struct device *dev; + struct regulator_desc desc; + struct regulator_init_data *regulator; + /* IC Type and Rev */ + int chip_id; + int chip_rev; + /* Voltage setting register */ + unsigned int vol_reg; + unsigned int sleep_reg; + /* Voltage range and step(linear) */ + unsigned int vsel_min; + unsigned int vsel_step; + unsigned int vsel_count; + /* Mode */ + unsigned int mode_reg; + unsigned int mode_mask; + /* Sleep voltage cache */ + unsigned int sleep_vol_cache; + /* Slew rate */ + unsigned int slew_reg; + unsigned int slew_mask; + const unsigned int *ramp_delay_table; + unsigned int n_ramp_values; + unsigned int slew_rate; +}; + +static int fan53555_set_suspend_voltage(struct regulator_dev *rdev, int uV) +{ + struct fan53555_device_info *di = rdev_get_drvdata(rdev); + int ret; + + if (di->sleep_vol_cache == uV) + return 0; + ret = regulator_map_voltage_linear(rdev, uV, uV); + if (ret < 0) + return ret; + ret = regmap_update_bits(rdev->regmap, di->sleep_reg, + di->desc.vsel_mask, ret); + if (ret < 0) + return ret; + /* Cache the sleep voltage setting. + * Might not be the real voltage which is rounded */ + di->sleep_vol_cache = uV; + + return 0; +} + +static int fan53555_set_suspend_enable(struct regulator_dev *rdev) +{ + struct fan53555_device_info *di = rdev_get_drvdata(rdev); + + return regmap_update_bits(rdev->regmap, di->sleep_reg, + VSEL_BUCK_EN, VSEL_BUCK_EN); +} + +static int fan53555_set_suspend_disable(struct regulator_dev *rdev) +{ + struct fan53555_device_info *di = rdev_get_drvdata(rdev); + + return regmap_update_bits(rdev->regmap, di->sleep_reg, + VSEL_BUCK_EN, 0); +} + +static int fan53555_set_mode(struct regulator_dev *rdev, unsigned int mode) +{ + struct fan53555_device_info *di = rdev_get_drvdata(rdev); + + switch (mode) { + case REGULATOR_MODE_FAST: + regmap_update_bits(rdev->regmap, di->mode_reg, + di->mode_mask, di->mode_mask); + break; + case REGULATOR_MODE_NORMAL: + regmap_update_bits(rdev->regmap, di->vol_reg, di->mode_mask, 0); + break; + default: + return -EINVAL; + } + return 0; +} + +static unsigned int fan53555_get_mode(struct regulator_dev *rdev) +{ + struct fan53555_device_info *di = rdev_get_drvdata(rdev); + unsigned int val; + int ret = 0; + + ret = regmap_read(rdev->regmap, di->mode_reg, &val); + if (ret < 0) + return ret; + if (val & di->mode_mask) + return REGULATOR_MODE_FAST; + else + return REGULATOR_MODE_NORMAL; +} + +static const unsigned int slew_rates[] = { + 64000, + 32000, + 16000, + 8000, + 4000, + 2000, + 1000, + 500, +}; + +static const unsigned int tcs_slew_rates[] = { + 18700, + 9300, + 4600, + 2300, +}; + +static const struct regulator_ops fan53555_regulator_ops = { + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_time_sel = regulator_set_voltage_time_sel, + .map_voltage = regulator_map_voltage_linear, + .list_voltage = regulator_list_voltage_linear, + .set_suspend_voltage = fan53555_set_suspend_voltage, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .set_mode = fan53555_set_mode, + .get_mode = fan53555_get_mode, + .set_ramp_delay = regulator_set_ramp_delay_regmap, + .set_suspend_enable = fan53555_set_suspend_enable, + .set_suspend_disable = fan53555_set_suspend_disable, +}; + +static int fan53526_voltages_setup_fairchild(struct fan53555_device_info *di) +{ + /* Init voltage range and step */ + switch (di->chip_id) { + case FAN53526_CHIP_ID_01: + switch (di->chip_rev) { + case FAN53526_CHIP_REV_08: + di->vsel_min = 600000; + di->vsel_step = 6250; + break; + default: + dev_err(di->dev, + "Chip ID %d with rev %d not supported!\n", + di->chip_id, di->chip_rev); + return -EINVAL; + } + break; + default: + dev_err(di->dev, + "Chip ID %d not supported!\n", di->chip_id); + return -EINVAL; + } + + di->slew_reg = FAN53555_CONTROL; + di->slew_mask = CTL_SLEW_MASK; + di->ramp_delay_table = slew_rates; + di->n_ramp_values = ARRAY_SIZE(slew_rates); + di->vsel_count = FAN53526_NVOLTAGES; + + return 0; +} + +static int fan53555_voltages_setup_fairchild(struct fan53555_device_info *di) +{ + /* Init voltage range and step */ + switch (di->chip_id) { + case FAN53555_CHIP_ID_00: + switch (di->chip_rev) { + case FAN53555_CHIP_REV_00: + di->vsel_min = 600000; + di->vsel_step = 10000; + break; + case FAN53555_CHIP_REV_13: + di->vsel_min = 800000; + di->vsel_step = 10000; + break; + default: + dev_err(di->dev, + "Chip ID %d with rev %d not supported!\n", + di->chip_id, di->chip_rev); + return -EINVAL; + } + break; + case FAN53555_CHIP_ID_01: + case FAN53555_CHIP_ID_03: + case FAN53555_CHIP_ID_05: + case FAN53555_CHIP_ID_08: + di->vsel_min = 600000; + di->vsel_step = 10000; + break; + case FAN53555_CHIP_ID_04: + di->vsel_min = 603000; + di->vsel_step = 12826; + break; + default: + dev_err(di->dev, + "Chip ID %d not supported!\n", di->chip_id); + return -EINVAL; + } + di->slew_reg = FAN53555_CONTROL; + di->slew_mask = CTL_SLEW_MASK; + di->ramp_delay_table = slew_rates; + di->n_ramp_values = ARRAY_SIZE(slew_rates); + di->vsel_count = FAN53555_NVOLTAGES; + + return 0; +} + +static int fan53555_voltages_setup_silergy(struct fan53555_device_info *di) +{ + /* Init voltage range and step */ + switch (di->chip_id) { + case SILERGY_SYR82X: + case SILERGY_SYR83X: + di->vsel_min = 712500; + di->vsel_step = 12500; + break; + default: + dev_err(di->dev, + "Chip ID %d not supported!\n", di->chip_id); + return -EINVAL; + } + di->slew_reg = FAN53555_CONTROL; + di->slew_mask = CTL_SLEW_MASK; + di->ramp_delay_table = slew_rates; + di->n_ramp_values = ARRAY_SIZE(slew_rates); + di->vsel_count = FAN53555_NVOLTAGES; + + return 0; +} + +static int fan53526_voltages_setup_tcs(struct fan53555_device_info *di) +{ + switch (di->chip_id) { + case TCS4525_CHIP_ID_12: + case TCS4526_CHIP_ID_00: + di->slew_reg = TCS4525_TIME; + di->slew_mask = TCS_SLEW_MASK; + di->ramp_delay_table = tcs_slew_rates; + di->n_ramp_values = ARRAY_SIZE(tcs_slew_rates); + + /* Init voltage range and step */ + di->vsel_min = 600000; + di->vsel_step = 6250; + di->vsel_count = FAN53526_NVOLTAGES; + break; + default: + dev_err(di->dev, "Chip ID %d not supported!\n", di->chip_id); + return -EINVAL; + } + + return 0; +} + +/* For 00,01,03,05 options: + * VOUT = 0.60V + NSELx * 10mV, from 0.60 to 1.23V. + * For 04 option: + * VOUT = 0.603V + NSELx * 12.826mV, from 0.603 to 1.411V. + * */ +static int fan53555_device_setup(struct fan53555_device_info *di, + struct fan53555_platform_data *pdata) +{ + int ret = 0; + + /* Setup voltage control register */ + switch (di->vendor) { + case FAN53526_VENDOR_FAIRCHILD: + case FAN53555_VENDOR_FAIRCHILD: + case FAN53555_VENDOR_SILERGY: + switch (pdata->sleep_vsel_id) { + case FAN53555_VSEL_ID_0: + di->sleep_reg = FAN53555_VSEL0; + di->vol_reg = FAN53555_VSEL1; + break; + case FAN53555_VSEL_ID_1: + di->sleep_reg = FAN53555_VSEL1; + di->vol_reg = FAN53555_VSEL0; + break; + default: + dev_err(di->dev, "Invalid VSEL ID!\n"); + return -EINVAL; + } + break; + case FAN53526_VENDOR_TCS: + switch (pdata->sleep_vsel_id) { + case FAN53555_VSEL_ID_0: + di->sleep_reg = TCS4525_VSEL0; + di->vol_reg = TCS4525_VSEL1; + break; + case FAN53555_VSEL_ID_1: + di->sleep_reg = TCS4525_VSEL1; + di->vol_reg = TCS4525_VSEL0; + break; + default: + dev_err(di->dev, "Invalid VSEL ID!\n"); + return -EINVAL; + } + break; + default: + dev_err(di->dev, "vendor %d not supported!\n", di->vendor); + return -EINVAL; + } + + /* Setup mode control register */ + switch (di->vendor) { + case FAN53526_VENDOR_FAIRCHILD: + di->mode_reg = FAN53555_CONTROL; + + switch (pdata->sleep_vsel_id) { + case FAN53555_VSEL_ID_0: + di->mode_mask = CTL_MODE_VSEL1_MODE; + break; + case FAN53555_VSEL_ID_1: + di->mode_mask = CTL_MODE_VSEL0_MODE; + break; + } + break; + case FAN53555_VENDOR_FAIRCHILD: + case FAN53555_VENDOR_SILERGY: + di->mode_reg = di->vol_reg; + di->mode_mask = VSEL_MODE; + break; + case FAN53526_VENDOR_TCS: + di->mode_reg = TCS4525_COMMAND; + + switch (pdata->sleep_vsel_id) { + case FAN53555_VSEL_ID_0: + di->mode_mask = TCS_VSEL1_MODE; + break; + case FAN53555_VSEL_ID_1: + di->mode_mask = TCS_VSEL0_MODE; + break; + } + break; + default: + dev_err(di->dev, "vendor %d not supported!\n", di->vendor); + return -EINVAL; + } + + /* Setup voltage range */ + switch (di->vendor) { + case FAN53526_VENDOR_FAIRCHILD: + ret = fan53526_voltages_setup_fairchild(di); + break; + case FAN53555_VENDOR_FAIRCHILD: + ret = fan53555_voltages_setup_fairchild(di); + break; + case FAN53555_VENDOR_SILERGY: + ret = fan53555_voltages_setup_silergy(di); + break; + case FAN53526_VENDOR_TCS: + ret = fan53526_voltages_setup_tcs(di); + break; + default: + dev_err(di->dev, "vendor %d not supported!\n", di->vendor); + return -EINVAL; + } + + return ret; +} + +static int fan53555_regulator_register(struct fan53555_device_info *di, + struct regulator_config *config) +{ + struct regulator_desc *rdesc = &di->desc; + struct regulator_dev *rdev; + + rdesc->name = "fan53555-reg"; + rdesc->supply_name = "vin"; + rdesc->ops = &fan53555_regulator_ops; + rdesc->type = REGULATOR_VOLTAGE; + rdesc->n_voltages = di->vsel_count; + rdesc->enable_reg = di->vol_reg; + rdesc->enable_mask = VSEL_BUCK_EN; + rdesc->min_uV = di->vsel_min; + rdesc->uV_step = di->vsel_step; + rdesc->vsel_reg = di->vol_reg; + rdesc->vsel_mask = di->vsel_count - 1; + rdesc->ramp_reg = di->slew_reg; + rdesc->ramp_mask = di->slew_mask; + rdesc->ramp_delay_table = di->ramp_delay_table; + rdesc->n_ramp_values = di->n_ramp_values; + rdesc->owner = THIS_MODULE; + + rdev = devm_regulator_register(di->dev, &di->desc, config); + return PTR_ERR_OR_ZERO(rdev); +} + +static const struct regmap_config fan53555_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static struct fan53555_platform_data *fan53555_parse_dt(struct device *dev, + struct device_node *np, + const struct regulator_desc *desc) +{ + struct fan53555_platform_data *pdata; + int ret; + u32 tmp; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + pdata->regulator = of_get_regulator_init_data(dev, np, desc); + + ret = of_property_read_u32(np, "fcs,suspend-voltage-selector", + &tmp); + if (!ret) + pdata->sleep_vsel_id = tmp; + + return pdata; +} + +static const struct of_device_id __maybe_unused fan53555_dt_ids[] = { + { + .compatible = "fcs,fan53526", + .data = (void *)FAN53526_VENDOR_FAIRCHILD, + }, { + .compatible = "fcs,fan53555", + .data = (void *)FAN53555_VENDOR_FAIRCHILD + }, { + .compatible = "silergy,syr827", + .data = (void *)FAN53555_VENDOR_SILERGY, + }, { + .compatible = "silergy,syr828", + .data = (void *)FAN53555_VENDOR_SILERGY, + }, { + .compatible = "tcs,tcs4525", + .data = (void *)FAN53526_VENDOR_TCS + }, { + .compatible = "tcs,tcs4526", + .data = (void *)FAN53526_VENDOR_TCS + }, + { } +}; +MODULE_DEVICE_TABLE(of, fan53555_dt_ids); + +static int fan53555_regulator_probe(struct i2c_client *client) +{ + const struct i2c_device_id *id = i2c_client_get_device_id(client); + struct device_node *np = client->dev.of_node; + struct fan53555_device_info *di; + struct fan53555_platform_data *pdata; + struct regulator_config config = { }; + struct regmap *regmap; + unsigned int val; + int ret; + + di = devm_kzalloc(&client->dev, sizeof(struct fan53555_device_info), + GFP_KERNEL); + if (!di) + return -ENOMEM; + + pdata = dev_get_platdata(&client->dev); + if (!pdata) + pdata = fan53555_parse_dt(&client->dev, np, &di->desc); + + if (!pdata || !pdata->regulator) { + dev_err(&client->dev, "Platform data not found!\n"); + return -ENODEV; + } + + di->regulator = pdata->regulator; + if (client->dev.of_node) { + di->vendor = + (unsigned long)of_device_get_match_data(&client->dev); + } else { + /* if no ramp constraint set, get the pdata ramp_delay */ + if (!di->regulator->constraints.ramp_delay) { + if (pdata->slew_rate >= ARRAY_SIZE(slew_rates)) { + dev_err(&client->dev, "Invalid slew_rate\n"); + return -EINVAL; + } + + di->regulator->constraints.ramp_delay + = slew_rates[pdata->slew_rate]; + } + + di->vendor = id->driver_data; + } + + regmap = devm_regmap_init_i2c(client, &fan53555_regmap_config); + if (IS_ERR(regmap)) { + dev_err(&client->dev, "Failed to allocate regmap!\n"); + return PTR_ERR(regmap); + } + di->dev = &client->dev; + i2c_set_clientdata(client, di); + /* Get chip ID */ + ret = regmap_read(regmap, FAN53555_ID1, &val); + if (ret < 0) { + dev_err(&client->dev, "Failed to get chip ID!\n"); + return ret; + } + di->chip_id = val & DIE_ID; + /* Get chip revision */ + ret = regmap_read(regmap, FAN53555_ID2, &val); + if (ret < 0) { + dev_err(&client->dev, "Failed to get chip Rev!\n"); + return ret; + } + di->chip_rev = val & DIE_REV; + dev_info(&client->dev, "FAN53555 Option[%d] Rev[%d] Detected!\n", + di->chip_id, di->chip_rev); + /* Device init */ + ret = fan53555_device_setup(di, pdata); + if (ret < 0) { + dev_err(&client->dev, "Failed to setup device!\n"); + return ret; + } + /* Register regulator */ + config.dev = di->dev; + config.init_data = di->regulator; + config.regmap = regmap; + config.driver_data = di; + config.of_node = np; + + ret = fan53555_regulator_register(di, &config); + if (ret < 0) + dev_err(&client->dev, "Failed to register regulator!\n"); + return ret; + +} + +static const struct i2c_device_id fan53555_id[] = { + { + .name = "fan53526", + .driver_data = FAN53526_VENDOR_FAIRCHILD + }, { + .name = "fan53555", + .driver_data = FAN53555_VENDOR_FAIRCHILD + }, { + .name = "syr827", + .driver_data = FAN53555_VENDOR_SILERGY + }, { + .name = "syr828", + .driver_data = FAN53555_VENDOR_SILERGY + }, { + .name = "tcs4525", + .driver_data = FAN53526_VENDOR_TCS + }, { + .name = "tcs4526", + .driver_data = FAN53526_VENDOR_TCS + }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, fan53555_id); + +static struct i2c_driver fan53555_regulator_driver = { + .driver = { + .name = "fan53555-regulator", + .of_match_table = of_match_ptr(fan53555_dt_ids), + }, + .probe_new = fan53555_regulator_probe, + .id_table = fan53555_id, +}; + +module_i2c_driver(fan53555_regulator_driver); + +MODULE_AUTHOR("Yunfan Zhang "); +MODULE_DESCRIPTION("FAN53555 regulator driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3