diff options
author | 2023-02-21 18:24:12 -0800 | |
---|---|---|
committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/staging/fbtft/fbtft-sysfs.c | |
download | linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz linux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.zip |
Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
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().
...
Diffstat (limited to 'drivers/staging/fbtft/fbtft-sysfs.c')
-rw-r--r-- | drivers/staging/fbtft/fbtft-sysfs.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/drivers/staging/fbtft/fbtft-sysfs.c b/drivers/staging/fbtft/fbtft-sysfs.c new file mode 100644 index 000000000..39e8d2806 --- /dev/null +++ b/drivers/staging/fbtft/fbtft-sysfs.c @@ -0,0 +1,220 @@ +// SPDX-License-Identifier: GPL-2.0 +#include "fbtft.h" +#include "internal.h" + +static int get_next_ulong(char **str_p, unsigned long *val, char *sep, int base) +{ + char *p_val; + + if (!str_p || !(*str_p)) + return -EINVAL; + + p_val = strsep(str_p, sep); + + if (!p_val) + return -EINVAL; + + return kstrtoul(p_val, base, val); +} + +int fbtft_gamma_parse_str(struct fbtft_par *par, u32 *curves, + const char *str, int size) +{ + char *str_p, *curve_p = NULL; + char *tmp; + unsigned long val = 0; + int ret = 0; + int curve_counter, value_counter; + int _count; + + fbtft_par_dbg(DEBUG_SYSFS, par, "%s() str=\n", __func__); + + if (!str || !curves) + return -EINVAL; + + fbtft_par_dbg(DEBUG_SYSFS, par, "%s\n", str); + + tmp = kmemdup(str, size + 1, GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + /* replace optional separators */ + str_p = tmp; + while (*str_p) { + if (*str_p == ',') + *str_p = ' '; + if (*str_p == ';') + *str_p = '\n'; + str_p++; + } + + str_p = strim(tmp); + + curve_counter = 0; + while (str_p) { + if (curve_counter == par->gamma.num_curves) { + dev_err(par->info->device, "Gamma: Too many curves\n"); + ret = -EINVAL; + goto out; + } + curve_p = strsep(&str_p, "\n"); + value_counter = 0; + while (curve_p) { + if (value_counter == par->gamma.num_values) { + dev_err(par->info->device, + "Gamma: Too many values\n"); + ret = -EINVAL; + goto out; + } + ret = get_next_ulong(&curve_p, &val, " ", 16); + if (ret) + goto out; + + _count = curve_counter * par->gamma.num_values + + value_counter; + curves[_count] = val; + value_counter++; + } + if (value_counter != par->gamma.num_values) { + dev_err(par->info->device, "Gamma: Too few values\n"); + ret = -EINVAL; + goto out; + } + curve_counter++; + } + if (curve_counter != par->gamma.num_curves) { + dev_err(par->info->device, "Gamma: Too few curves\n"); + ret = -EINVAL; + goto out; + } + +out: + kfree(tmp); + return ret; +} + +static ssize_t +sprintf_gamma(struct fbtft_par *par, u32 *curves, char *buf) +{ + ssize_t len = 0; + unsigned int i, j; + + mutex_lock(&par->gamma.lock); + for (i = 0; i < par->gamma.num_curves; i++) { + for (j = 0; j < par->gamma.num_values; j++) + len += scnprintf(&buf[len], PAGE_SIZE, + "%04x ", curves[i * par->gamma.num_values + j]); + buf[len - 1] = '\n'; + } + mutex_unlock(&par->gamma.lock); + + return len; +} + +static ssize_t store_gamma_curve(struct device *device, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fb_info *fb_info = dev_get_drvdata(device); + struct fbtft_par *par = fb_info->par; + u32 tmp_curves[FBTFT_GAMMA_MAX_VALUES_TOTAL]; + int ret; + + ret = fbtft_gamma_parse_str(par, tmp_curves, buf, count); + if (ret) + return ret; + + ret = par->fbtftops.set_gamma(par, tmp_curves); + if (ret) + return ret; + + mutex_lock(&par->gamma.lock); + memcpy(par->gamma.curves, tmp_curves, + par->gamma.num_curves * par->gamma.num_values * + sizeof(tmp_curves[0])); + mutex_unlock(&par->gamma.lock); + + return count; +} + +static ssize_t show_gamma_curve(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct fb_info *fb_info = dev_get_drvdata(device); + struct fbtft_par *par = fb_info->par; + + return sprintf_gamma(par, par->gamma.curves, buf); +} + +static struct device_attribute gamma_device_attrs[] = { + __ATTR(gamma, 0660, show_gamma_curve, store_gamma_curve), +}; + +void fbtft_expand_debug_value(unsigned long *debug) +{ + switch (*debug & 0x7) { + case 1: + *debug |= DEBUG_LEVEL_1; + break; + case 2: + *debug |= DEBUG_LEVEL_2; + break; + case 3: + *debug |= DEBUG_LEVEL_3; + break; + case 4: + *debug |= DEBUG_LEVEL_4; + break; + case 5: + *debug |= DEBUG_LEVEL_5; + break; + case 6: + *debug |= DEBUG_LEVEL_6; + break; + case 7: + *debug = 0xFFFFFFFF; + break; + } +} + +static ssize_t store_debug(struct device *device, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fb_info *fb_info = dev_get_drvdata(device); + struct fbtft_par *par = fb_info->par; + int ret; + + ret = kstrtoul(buf, 10, &par->debug); + if (ret) + return ret; + fbtft_expand_debug_value(&par->debug); + + return count; +} + +static ssize_t show_debug(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct fb_info *fb_info = dev_get_drvdata(device); + struct fbtft_par *par = fb_info->par; + + return sysfs_emit(buf, "%lu\n", par->debug); +} + +static struct device_attribute debug_device_attr = + __ATTR(debug, 0660, show_debug, store_debug); + +void fbtft_sysfs_init(struct fbtft_par *par) +{ + device_create_file(par->info->dev, &debug_device_attr); + if (par->gamma.curves && par->fbtftops.set_gamma) + device_create_file(par->info->dev, &gamma_device_attrs[0]); +} + +void fbtft_sysfs_exit(struct fbtft_par *par) +{ + device_remove_file(par->info->dev, &debug_device_attr); + if (par->gamma.curves && par->fbtftops.set_gamma) + device_remove_file(par->info->dev, &gamma_device_attrs[0]); +} |