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/thermal/k3_j72xx_bandgap.c | 568 +++++++++++++++++++++++++++++++++++++ 1 file changed, 568 insertions(+) create mode 100644 drivers/thermal/k3_j72xx_bandgap.c (limited to 'drivers/thermal/k3_j72xx_bandgap.c') diff --git a/drivers/thermal/k3_j72xx_bandgap.c b/drivers/thermal/k3_j72xx_bandgap.c new file mode 100644 index 000000000..031ea1091 --- /dev/null +++ b/drivers/thermal/k3_j72xx_bandgap.c @@ -0,0 +1,568 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * TI Bandgap temperature sensor driver for J72XX SoC Family + * + * Copyright (C) 2021 Texas Instruments Incorporated - http://www.ti.com/ + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define K3_VTM_DEVINFO_PWR0_OFFSET 0x4 +#define K3_VTM_DEVINFO_PWR0_TEMPSENS_CT_MASK 0xf0 +#define K3_VTM_TMPSENS0_CTRL_OFFSET 0x300 +#define K3_VTM_MISC_CTRL_OFFSET 0xc +#define K3_VTM_TMPSENS_STAT_OFFSET 0x8 +#define K3_VTM_ANYMAXT_OUTRG_ALERT_EN 0x1 +#define K3_VTM_MISC_CTRL2_OFFSET 0x10 +#define K3_VTM_TS_STAT_DTEMP_MASK 0x3ff +#define K3_VTM_MAX_NUM_TS 8 +#define K3_VTM_TMPSENS_CTRL_SOC BIT(5) +#define K3_VTM_TMPSENS_CTRL_CLRZ BIT(6) +#define K3_VTM_TMPSENS_CTRL_CLKON_REQ BIT(7) +#define K3_VTM_TMPSENS_CTRL_MAXT_OUTRG_EN BIT(11) + +#define K3_VTM_CORRECTION_TEMP_CNT 3 + +#define MINUS40CREF 5 +#define PLUS30CREF 253 +#define PLUS125CREF 730 +#define PLUS150CREF 940 + +#define TABLE_SIZE 1024 +#define MAX_TEMP 123000 +#define COOL_DOWN_TEMP 105000 + +#define FACTORS_REDUCTION 13 +static int *derived_table; + +static int compute_value(int index, const s64 *factors, int nr_factors, + int reduction) +{ + s64 value = 0; + int i; + + for (i = 0; i < nr_factors; i++) + value += factors[i] * int_pow(index, i); + + return (int)div64_s64(value, int_pow(10, reduction)); +} + +static void init_table(int factors_size, int *table, const s64 *factors) +{ + int i; + + for (i = 0; i < TABLE_SIZE; i++) + table[i] = compute_value(i, factors, factors_size, + FACTORS_REDUCTION); +} + +/** + * struct err_values - structure containing error/reference values + * @refs: reference error values for -40C, 30C, 125C & 150C + * @errs: Actual error values for -40C, 30C, 125C & 150C read from the efuse + */ +struct err_values { + int refs[4]; + int errs[4]; +}; + +static void create_table_segments(struct err_values *err_vals, int seg, + int *ref_table) +{ + int m = 0, c, num, den, i, err, idx1, idx2, err1, err2, ref1, ref2; + + if (seg == 0) + idx1 = 0; + else + idx1 = err_vals->refs[seg]; + + idx2 = err_vals->refs[seg + 1]; + err1 = err_vals->errs[seg]; + err2 = err_vals->errs[seg + 1]; + ref1 = err_vals->refs[seg]; + ref2 = err_vals->refs[seg + 1]; + + /* + * Calculate the slope with adc values read from the register + * as the y-axis param and err in adc value as x-axis param + */ + num = ref2 - ref1; + den = err2 - err1; + if (den) + m = num / den; + c = ref2 - m * err2; + + /* + * Take care of divide by zero error if error values are same + * Or when the slope is 0 + */ + if (den != 0 && m != 0) { + for (i = idx1; i <= idx2; i++) { + err = (i - c) / m; + if (((i + err) < 0) || ((i + err) >= TABLE_SIZE)) + continue; + derived_table[i] = ref_table[i + err]; + } + } else { /* Constant error take care of divide by zero */ + for (i = idx1; i <= idx2; i++) { + if (((i + err1) < 0) || ((i + err1) >= TABLE_SIZE)) + continue; + derived_table[i] = ref_table[i + err1]; + } + } +} + +static int prep_lookup_table(struct err_values *err_vals, int *ref_table) +{ + int inc, i, seg; + + /* + * Fill up the lookup table under 3 segments + * region -40C to +30C + * region +30C to +125C + * region +125C to +150C + */ + for (seg = 0; seg < 3; seg++) + create_table_segments(err_vals, seg, ref_table); + + /* Get to the first valid temperature */ + i = 0; + while (!derived_table[i]) + i++; + + /* + * Get to the last zero index and back fill the temperature for + * sake of continuity + */ + if (i) { + /* 300 milli celsius steps */ + while (i--) + derived_table[i] = derived_table[i + 1] - 300; + } + + /* + * Fill the last trailing 0s which are unfilled with increments of + * 100 milli celsius till 1023 code + */ + i = TABLE_SIZE - 1; + while (!derived_table[i]) + i--; + + i++; + inc = 1; + while (i < TABLE_SIZE) { + derived_table[i] = derived_table[i - 1] + inc * 100; + i++; + } + + return 0; +} + +struct k3_thermal_data; + +struct k3_j72xx_bandgap { + struct device *dev; + void __iomem *base; + void __iomem *cfg2_base; + struct k3_thermal_data *ts_data[K3_VTM_MAX_NUM_TS]; +}; + +/* common data structures */ +struct k3_thermal_data { + struct k3_j72xx_bandgap *bgp; + u32 ctrl_offset; + u32 stat_offset; +}; + +static int two_cmp(int tmp, int mask) +{ + tmp = ~(tmp); + tmp &= mask; + tmp += 1; + + /* Return negative value */ + return (0 - tmp); +} + +static unsigned int vtm_get_best_value(unsigned int s0, unsigned int s1, + unsigned int s2) +{ + int d01 = abs(s0 - s1); + int d02 = abs(s0 - s2); + int d12 = abs(s1 - s2); + + if (d01 <= d02 && d01 <= d12) + return (s0 + s1) / 2; + + if (d02 <= d01 && d02 <= d12) + return (s0 + s2) / 2; + + return (s1 + s2) / 2; +} + +static inline int k3_bgp_read_temp(struct k3_thermal_data *devdata, + int *temp) +{ + struct k3_j72xx_bandgap *bgp; + unsigned int dtemp, s0, s1, s2; + + bgp = devdata->bgp; + /* + * Errata is applicable for am654 pg 1.0 silicon/J7ES. There + * is a variation of the order for certain degree centigrade on AM654. + * Work around that by getting the average of two closest + * readings out of three readings everytime we want to + * report temperatures. + * + * Errata workaround. + */ + s0 = readl(bgp->base + devdata->stat_offset) & + K3_VTM_TS_STAT_DTEMP_MASK; + s1 = readl(bgp->base + devdata->stat_offset) & + K3_VTM_TS_STAT_DTEMP_MASK; + s2 = readl(bgp->base + devdata->stat_offset) & + K3_VTM_TS_STAT_DTEMP_MASK; + dtemp = vtm_get_best_value(s0, s1, s2); + + if (dtemp < 0 || dtemp >= TABLE_SIZE) + return -EINVAL; + + *temp = derived_table[dtemp]; + + return 0; +} + +/* Get temperature callback function for thermal zone */ +static int k3_thermal_get_temp(struct thermal_zone_device *tz, int *temp) +{ + return k3_bgp_read_temp(tz->devdata, temp); +} + +static const struct thermal_zone_device_ops k3_of_thermal_ops = { + .get_temp = k3_thermal_get_temp, +}; + +static int k3_j72xx_bandgap_temp_to_adc_code(int temp) +{ + int low = 0, high = TABLE_SIZE - 1, mid; + + if (temp > 160000 || temp < -50000) + return -EINVAL; + + /* Binary search to find the adc code */ + while (low < (high - 1)) { + mid = (low + high) / 2; + if (temp <= derived_table[mid]) + high = mid; + else + low = mid; + } + + return mid; +} + +static void get_efuse_values(int id, struct k3_thermal_data *data, int *err, + void __iomem *fuse_base) +{ + int i, tmp, pow; + int ct_offsets[5][K3_VTM_CORRECTION_TEMP_CNT] = { + { 0x0, 0x8, 0x4 }, + { 0x0, 0x8, 0x4 }, + { 0x0, -1, 0x4 }, + { 0x0, 0xC, -1 }, + { 0x0, 0xc, 0x8 } + }; + int ct_bm[5][K3_VTM_CORRECTION_TEMP_CNT] = { + { 0x3f, 0x1fe000, 0x1ff }, + { 0xfc0, 0x1fe000, 0x3fe00 }, + { 0x3f000, 0x7f800000, 0x7fc0000 }, + { 0xfc0000, 0x1fe0, 0x1f800000 }, + { 0x3f000000, 0x1fe000, 0x1ff0 } + }; + + for (i = 0; i < 3; i++) { + /* Extract the offset value using bit-mask */ + if (ct_offsets[id][i] == -1 && i == 1) { + /* 25C offset Case of Sensor 2 split between 2 regs */ + tmp = (readl(fuse_base + 0x8) & 0xE0000000) >> (29); + tmp |= ((readl(fuse_base + 0xC) & 0x1F) << 3); + pow = tmp & 0x80; + } else if (ct_offsets[id][i] == -1 && i == 2) { + /* 125C Case of Sensor 3 split between 2 regs */ + tmp = (readl(fuse_base + 0x4) & 0xF8000000) >> (27); + tmp |= ((readl(fuse_base + 0x8) & 0xF) << 5); + pow = tmp & 0x100; + } else { + tmp = readl(fuse_base + ct_offsets[id][i]); + tmp &= ct_bm[id][i]; + tmp = tmp >> __ffs(ct_bm[id][i]); + + /* Obtain the sign bit pow*/ + pow = ct_bm[id][i] >> __ffs(ct_bm[id][i]); + pow += 1; + pow /= 2; + } + + /* Check for negative value */ + if (tmp & pow) { + /* 2's complement value */ + tmp = two_cmp(tmp, ct_bm[id][i] >> __ffs(ct_bm[id][i])); + } + err[i] = tmp; + } + + /* Err value for 150C is set to 0 */ + err[i] = 0; +} + +static void print_look_up_table(struct device *dev, int *ref_table) +{ + int i; + + dev_dbg(dev, "The contents of derived array\n"); + dev_dbg(dev, "Code Temperature\n"); + for (i = 0; i < TABLE_SIZE; i++) + dev_dbg(dev, "%d %d %d\n", i, derived_table[i], ref_table[i]); +} + +struct k3_j72xx_bandgap_data { + const bool has_errata_i2128; +}; + +static int k3_j72xx_bandgap_probe(struct platform_device *pdev) +{ + int ret = 0, cnt, val, id; + int high_max, low_temp; + struct resource *res; + struct device *dev = &pdev->dev; + struct k3_j72xx_bandgap *bgp; + struct k3_thermal_data *data; + bool workaround_needed = false; + const struct k3_j72xx_bandgap_data *driver_data; + struct thermal_zone_device *ti_thermal; + int *ref_table; + struct err_values err_vals; + void __iomem *fuse_base; + + const s64 golden_factors[] = { + -490019999999999936, + 3251200000000000, + -1705800000000, + 603730000, + -92627, + }; + + const s64 pvt_wa_factors[] = { + -415230000000000000, + 3126600000000000, + -1157800000000, + }; + + bgp = devm_kzalloc(&pdev->dev, sizeof(*bgp), GFP_KERNEL); + if (!bgp) + return -ENOMEM; + + bgp->dev = dev; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + bgp->base = devm_ioremap_resource(dev, res); + if (IS_ERR(bgp->base)) + return PTR_ERR(bgp->base); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + bgp->cfg2_base = devm_ioremap_resource(dev, res); + if (IS_ERR(bgp->cfg2_base)) + return PTR_ERR(bgp->cfg2_base); + + driver_data = of_device_get_match_data(dev); + if (driver_data) + workaround_needed = driver_data->has_errata_i2128; + + /* + * Some of TI's J721E SoCs require a software trimming procedure + * for the temperature monitors to function properly. To determine + * if this particular SoC is NOT affected, both bits in the + * WKUP_SPARE_FUSE0[31:30] will be set (0xC0000000) indicating + * when software trimming should NOT be applied. + * + * https://www.ti.com/lit/er/sprz455c/sprz455c.pdf + */ + if (workaround_needed) { + res = platform_get_resource(pdev, IORESOURCE_MEM, 2); + fuse_base = devm_ioremap_resource(dev, res); + if (IS_ERR(fuse_base)) + return PTR_ERR(fuse_base); + + if ((readl(fuse_base) & 0xc0000000) == 0xc0000000) + workaround_needed = false; + } + + dev_dbg(bgp->dev, "Work around %sneeded\n", + workaround_needed ? "" : "not "); + + pm_runtime_enable(dev); + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + pm_runtime_put_noidle(dev); + pm_runtime_disable(dev); + return ret; + } + + /* Get the sensor count in the VTM */ + val = readl(bgp->base + K3_VTM_DEVINFO_PWR0_OFFSET); + cnt = val & K3_VTM_DEVINFO_PWR0_TEMPSENS_CT_MASK; + cnt >>= __ffs(K3_VTM_DEVINFO_PWR0_TEMPSENS_CT_MASK); + + data = devm_kcalloc(bgp->dev, cnt, sizeof(*data), GFP_KERNEL); + if (!data) { + ret = -ENOMEM; + goto err_alloc; + } + + ref_table = kzalloc(sizeof(*ref_table) * TABLE_SIZE, GFP_KERNEL); + if (!ref_table) { + ret = -ENOMEM; + goto err_alloc; + } + + derived_table = devm_kzalloc(bgp->dev, sizeof(*derived_table) * TABLE_SIZE, + GFP_KERNEL); + if (!derived_table) { + ret = -ENOMEM; + goto err_free_ref_table; + } + + if (!workaround_needed) + init_table(5, ref_table, golden_factors); + else + init_table(3, ref_table, pvt_wa_factors); + + /* Register the thermal sensors */ + for (id = 0; id < cnt; id++) { + data[id].bgp = bgp; + data[id].ctrl_offset = K3_VTM_TMPSENS0_CTRL_OFFSET + id * 0x20; + data[id].stat_offset = data[id].ctrl_offset + + K3_VTM_TMPSENS_STAT_OFFSET; + + if (workaround_needed) { + /* ref adc values for -40C, 30C & 125C respectively */ + err_vals.refs[0] = MINUS40CREF; + err_vals.refs[1] = PLUS30CREF; + err_vals.refs[2] = PLUS125CREF; + err_vals.refs[3] = PLUS150CREF; + get_efuse_values(id, &data[id], err_vals.errs, fuse_base); + } + + if (id == 0 && workaround_needed) + prep_lookup_table(&err_vals, ref_table); + else if (id == 0 && !workaround_needed) + memcpy(derived_table, ref_table, TABLE_SIZE * 4); + + val = readl(data[id].bgp->cfg2_base + data[id].ctrl_offset); + val |= (K3_VTM_TMPSENS_CTRL_MAXT_OUTRG_EN | + K3_VTM_TMPSENS_CTRL_SOC | + K3_VTM_TMPSENS_CTRL_CLRZ | BIT(4)); + writel(val, data[id].bgp->cfg2_base + data[id].ctrl_offset); + + bgp->ts_data[id] = &data[id]; + ti_thermal = devm_thermal_of_zone_register(bgp->dev, id, &data[id], + &k3_of_thermal_ops); + if (IS_ERR(ti_thermal)) { + dev_err(bgp->dev, "thermal zone device is NULL\n"); + ret = PTR_ERR(ti_thermal); + goto err_free_ref_table; + } + } + + /* + * Program TSHUT thresholds + * Step 1: set the thresholds to ~123C and 105C WKUP_VTM_MISC_CTRL2 + * Step 2: WKUP_VTM_TMPSENS_CTRL_j set the MAXT_OUTRG_EN bit + * This is already taken care as per of init + * Step 3: WKUP_VTM_MISC_CTRL set the ANYMAXT_OUTRG_ALERT_EN bit + */ + high_max = k3_j72xx_bandgap_temp_to_adc_code(MAX_TEMP); + low_temp = k3_j72xx_bandgap_temp_to_adc_code(COOL_DOWN_TEMP); + + writel((low_temp << 16) | high_max, data[0].bgp->cfg2_base + + K3_VTM_MISC_CTRL2_OFFSET); + mdelay(100); + writel(K3_VTM_ANYMAXT_OUTRG_ALERT_EN, data[0].bgp->cfg2_base + + K3_VTM_MISC_CTRL_OFFSET); + + platform_set_drvdata(pdev, bgp); + + print_look_up_table(dev, ref_table); + /* + * Now that the derived_table has the appropriate look up values + * Free up the ref_table + */ + kfree(ref_table); + + return 0; + +err_free_ref_table: + kfree(ref_table); + +err_alloc: + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static int k3_j72xx_bandgap_remove(struct platform_device *pdev) +{ + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + + return 0; +} + +static const struct k3_j72xx_bandgap_data k3_j72xx_bandgap_j721e_data = { + .has_errata_i2128 = true, +}; + +static const struct k3_j72xx_bandgap_data k3_j72xx_bandgap_j7200_data = { + .has_errata_i2128 = false, +}; + +static const struct of_device_id of_k3_j72xx_bandgap_match[] = { + { + .compatible = "ti,j721e-vtm", + .data = &k3_j72xx_bandgap_j721e_data, + }, + { + .compatible = "ti,j7200-vtm", + .data = &k3_j72xx_bandgap_j7200_data, + }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, of_k3_j72xx_bandgap_match); + +static struct platform_driver k3_j72xx_bandgap_sensor_driver = { + .probe = k3_j72xx_bandgap_probe, + .remove = k3_j72xx_bandgap_remove, + .driver = { + .name = "k3-j72xx-soc-thermal", + .of_match_table = of_k3_j72xx_bandgap_match, + }, +}; + +module_platform_driver(k3_j72xx_bandgap_sensor_driver); + +MODULE_DESCRIPTION("K3 bandgap temperature sensor driver"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("J Keerthy "); -- cgit v1.2.3