diff options
author | 2023-02-21 18:24:12 -0800 | |
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committer | 2023-02-21 18:24:12 -0800 | |
commit | 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch) | |
tree | cc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/video/fbdev/clps711x-fb.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/video/fbdev/clps711x-fb.c')
-rw-r--r-- | drivers/video/fbdev/clps711x-fb.c | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/drivers/video/fbdev/clps711x-fb.c b/drivers/video/fbdev/clps711x-fb.c new file mode 100644 index 000000000..a1061c2f1 --- /dev/null +++ b/drivers/video/fbdev/clps711x-fb.c @@ -0,0 +1,394 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Cirrus Logic CLPS711X FB driver + * + * Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru> + * Based on driver by Russell King <rmk@arm.linux.org.uk> + */ + +#include <linux/clk.h> +#include <linux/fb.h> +#include <linux/io.h> +#include <linux/lcd.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/mfd/syscon.h> +#include <linux/mfd/syscon/clps711x.h> +#include <linux/regulator/consumer.h> +#include <video/of_display_timing.h> + +#define CLPS711X_FB_NAME "clps711x-fb" +#define CLPS711X_FB_BPP_MAX (4) + +/* Registers relative to LCDCON */ +#define CLPS711X_LCDCON (0x0000) +# define LCDCON_GSEN BIT(30) +# define LCDCON_GSMD BIT(31) +#define CLPS711X_PALLSW (0x0280) +#define CLPS711X_PALMSW (0x02c0) +#define CLPS711X_FBADDR (0x0d40) + +struct clps711x_fb_info { + struct clk *clk; + void __iomem *base; + struct regmap *syscon; + resource_size_t buffsize; + struct fb_videomode mode; + struct regulator *lcd_pwr; + u32 ac_prescale; + bool cmap_invert; +}; + +static int clps711x_fb_setcolreg(u_int regno, u_int red, u_int green, + u_int blue, u_int transp, struct fb_info *info) +{ + struct clps711x_fb_info *cfb = info->par; + u32 level, mask, shift; + + if (regno >= BIT(info->var.bits_per_pixel)) + return -EINVAL; + + shift = 4 * (regno & 7); + mask = 0xf << shift; + /* gray = 0.30*R + 0.58*G + 0.11*B */ + level = (((red * 77 + green * 151 + blue * 28) >> 20) << shift) & mask; + if (cfb->cmap_invert) + level = 0xf - level; + + regno = (regno < 8) ? CLPS711X_PALLSW : CLPS711X_PALMSW; + + writel((readl(cfb->base + regno) & ~mask) | level, cfb->base + regno); + + return 0; +} + +static int clps711x_fb_check_var(struct fb_var_screeninfo *var, + struct fb_info *info) +{ + u32 val; + + if (var->bits_per_pixel < 1 || + var->bits_per_pixel > CLPS711X_FB_BPP_MAX) + return -EINVAL; + + if (!var->pixclock) + return -EINVAL; + + val = DIV_ROUND_UP(var->xres, 16) - 1; + if (val < 0x01 || val > 0x3f) + return -EINVAL; + + val = DIV_ROUND_UP(var->yres * var->xres * var->bits_per_pixel, 128); + val--; + if (val < 0x001 || val > 0x1fff) + return -EINVAL; + + var->transp.msb_right = 0; + var->transp.offset = 0; + var->transp.length = 0; + var->red.msb_right = 0; + var->red.offset = 0; + var->red.length = var->bits_per_pixel; + var->green = var->red; + var->blue = var->red; + var->grayscale = var->bits_per_pixel > 1; + + return 0; +} + +static int clps711x_fb_set_par(struct fb_info *info) +{ + struct clps711x_fb_info *cfb = info->par; + resource_size_t size; + u32 lcdcon, pps; + + size = (info->var.xres * info->var.yres * info->var.bits_per_pixel) / 8; + if (size > cfb->buffsize) + return -EINVAL; + + switch (info->var.bits_per_pixel) { + case 1: + info->fix.visual = FB_VISUAL_MONO01; + break; + case 2: + case 4: + info->fix.visual = FB_VISUAL_PSEUDOCOLOR; + break; + default: + return -EINVAL; + } + + info->fix.line_length = info->var.xres * info->var.bits_per_pixel / 8; + info->fix.smem_len = size; + + lcdcon = (info->var.xres * info->var.yres * + info->var.bits_per_pixel) / 128 - 1; + lcdcon |= ((info->var.xres / 16) - 1) << 13; + lcdcon |= (cfb->ac_prescale & 0x1f) << 25; + + pps = clk_get_rate(cfb->clk) / (PICOS2KHZ(info->var.pixclock) * 1000); + if (pps) + pps--; + lcdcon |= (pps & 0x3f) << 19; + + if (info->var.bits_per_pixel == 4) + lcdcon |= LCDCON_GSMD; + if (info->var.bits_per_pixel >= 2) + lcdcon |= LCDCON_GSEN; + + /* LCDCON must only be changed while the LCD is disabled */ + regmap_update_bits(cfb->syscon, SYSCON_OFFSET, SYSCON1_LCDEN, 0); + writel(lcdcon, cfb->base + CLPS711X_LCDCON); + regmap_update_bits(cfb->syscon, SYSCON_OFFSET, + SYSCON1_LCDEN, SYSCON1_LCDEN); + + return 0; +} + +static int clps711x_fb_blank(int blank, struct fb_info *info) +{ + /* Return happy */ + return 0; +} + +static const struct fb_ops clps711x_fb_ops = { + .owner = THIS_MODULE, + .fb_setcolreg = clps711x_fb_setcolreg, + .fb_check_var = clps711x_fb_check_var, + .fb_set_par = clps711x_fb_set_par, + .fb_blank = clps711x_fb_blank, + .fb_fillrect = sys_fillrect, + .fb_copyarea = sys_copyarea, + .fb_imageblit = sys_imageblit, +}; + +static int clps711x_lcd_check_fb(struct lcd_device *lcddev, struct fb_info *fi) +{ + struct clps711x_fb_info *cfb = dev_get_drvdata(&lcddev->dev); + + return (!fi || fi->par == cfb) ? 1 : 0; +} + +static int clps711x_lcd_get_power(struct lcd_device *lcddev) +{ + struct clps711x_fb_info *cfb = dev_get_drvdata(&lcddev->dev); + + if (!IS_ERR_OR_NULL(cfb->lcd_pwr)) + if (!regulator_is_enabled(cfb->lcd_pwr)) + return FB_BLANK_NORMAL; + + return FB_BLANK_UNBLANK; +} + +static int clps711x_lcd_set_power(struct lcd_device *lcddev, int blank) +{ + struct clps711x_fb_info *cfb = dev_get_drvdata(&lcddev->dev); + + if (!IS_ERR_OR_NULL(cfb->lcd_pwr)) { + if (blank == FB_BLANK_UNBLANK) { + if (!regulator_is_enabled(cfb->lcd_pwr)) + return regulator_enable(cfb->lcd_pwr); + } else { + if (regulator_is_enabled(cfb->lcd_pwr)) + return regulator_disable(cfb->lcd_pwr); + } + } + + return 0; +} + +static struct lcd_ops clps711x_lcd_ops = { + .check_fb = clps711x_lcd_check_fb, + .get_power = clps711x_lcd_get_power, + .set_power = clps711x_lcd_set_power, +}; + +static int clps711x_fb_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *disp, *np = dev->of_node; + struct clps711x_fb_info *cfb; + struct lcd_device *lcd; + struct fb_info *info; + struct resource *res; + int ret = -ENOENT; + u32 val; + + if (fb_get_options(CLPS711X_FB_NAME, NULL)) + return -ENODEV; + + info = framebuffer_alloc(sizeof(*cfb), dev); + if (!info) + return -ENOMEM; + + cfb = info->par; + platform_set_drvdata(pdev, info); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + goto out_fb_release; + cfb->base = devm_ioremap(dev, res->start, resource_size(res)); + if (!cfb->base) { + ret = -ENOMEM; + goto out_fb_release; + } + + info->fix.mmio_start = res->start; + info->fix.mmio_len = resource_size(res); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + info->screen_base = devm_ioremap_resource(dev, res); + if (IS_ERR(info->screen_base)) { + ret = PTR_ERR(info->screen_base); + goto out_fb_release; + } + + /* Physical address should be aligned to 256 MiB */ + if (res->start & 0x0fffffff) { + ret = -EINVAL; + goto out_fb_release; + } + + info->apertures = alloc_apertures(1); + if (!info->apertures) { + ret = -ENOMEM; + goto out_fb_release; + } + + cfb->buffsize = resource_size(res); + info->fix.smem_start = res->start; + info->apertures->ranges[0].base = info->fix.smem_start; + info->apertures->ranges[0].size = cfb->buffsize; + + cfb->clk = devm_clk_get(dev, NULL); + if (IS_ERR(cfb->clk)) { + ret = PTR_ERR(cfb->clk); + goto out_fb_release; + } + + cfb->syscon = syscon_regmap_lookup_by_phandle(np, "syscon"); + if (IS_ERR(cfb->syscon)) { + ret = PTR_ERR(cfb->syscon); + goto out_fb_release; + } + + disp = of_parse_phandle(np, "display", 0); + if (!disp) { + dev_err(&pdev->dev, "No display defined\n"); + ret = -ENODATA; + goto out_fb_release; + } + + ret = of_get_fb_videomode(disp, &cfb->mode, OF_USE_NATIVE_MODE); + if (ret) { + of_node_put(disp); + goto out_fb_release; + } + + of_property_read_u32(disp, "ac-prescale", &cfb->ac_prescale); + cfb->cmap_invert = of_property_read_bool(disp, "cmap-invert"); + + ret = of_property_read_u32(disp, "bits-per-pixel", + &info->var.bits_per_pixel); + of_node_put(disp); + if (ret) + goto out_fb_release; + + /* Force disable LCD on any mismatch */ + if (info->fix.smem_start != (readb(cfb->base + CLPS711X_FBADDR) << 28)) + regmap_update_bits(cfb->syscon, SYSCON_OFFSET, + SYSCON1_LCDEN, 0); + + ret = regmap_read(cfb->syscon, SYSCON_OFFSET, &val); + if (ret) + goto out_fb_release; + + if (!(val & SYSCON1_LCDEN)) { + /* Setup start FB address */ + writeb(info->fix.smem_start >> 28, cfb->base + CLPS711X_FBADDR); + /* Clean FB memory */ + memset_io(info->screen_base, 0, cfb->buffsize); + } + + cfb->lcd_pwr = devm_regulator_get(dev, "lcd"); + if (PTR_ERR(cfb->lcd_pwr) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto out_fb_release; + } + + info->fbops = &clps711x_fb_ops; + info->flags = FBINFO_DEFAULT; + info->var.activate = FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW; + info->var.height = -1; + info->var.width = -1; + info->var.vmode = FB_VMODE_NONINTERLACED; + info->fix.type = FB_TYPE_PACKED_PIXELS; + info->fix.accel = FB_ACCEL_NONE; + strscpy(info->fix.id, CLPS711X_FB_NAME, sizeof(info->fix.id)); + fb_videomode_to_var(&info->var, &cfb->mode); + + ret = fb_alloc_cmap(&info->cmap, BIT(CLPS711X_FB_BPP_MAX), 0); + if (ret) + goto out_fb_release; + + ret = fb_set_var(info, &info->var); + if (ret) + goto out_fb_dealloc_cmap; + + ret = register_framebuffer(info); + if (ret) + goto out_fb_dealloc_cmap; + + lcd = devm_lcd_device_register(dev, "clps711x-lcd", dev, cfb, + &clps711x_lcd_ops); + if (!IS_ERR(lcd)) + return 0; + + ret = PTR_ERR(lcd); + unregister_framebuffer(info); + +out_fb_dealloc_cmap: + regmap_update_bits(cfb->syscon, SYSCON_OFFSET, SYSCON1_LCDEN, 0); + fb_dealloc_cmap(&info->cmap); + +out_fb_release: + framebuffer_release(info); + + return ret; +} + +static int clps711x_fb_remove(struct platform_device *pdev) +{ + struct fb_info *info = platform_get_drvdata(pdev); + struct clps711x_fb_info *cfb = info->par; + + regmap_update_bits(cfb->syscon, SYSCON_OFFSET, SYSCON1_LCDEN, 0); + + unregister_framebuffer(info); + fb_dealloc_cmap(&info->cmap); + framebuffer_release(info); + + return 0; +} + +static const struct of_device_id clps711x_fb_dt_ids[] = { + { .compatible = "cirrus,ep7209-fb", }, + { } +}; +MODULE_DEVICE_TABLE(of, clps711x_fb_dt_ids); + +static struct platform_driver clps711x_fb_driver = { + .driver = { + .name = CLPS711X_FB_NAME, + .of_match_table = clps711x_fb_dt_ids, + }, + .probe = clps711x_fb_probe, + .remove = clps711x_fb_remove, +}; +module_platform_driver(clps711x_fb_driver); + +MODULE_AUTHOR("Alexander Shiyan <shc_work@mail.ru>"); +MODULE_DESCRIPTION("Cirrus Logic CLPS711X FB driver"); +MODULE_LICENSE("GPL"); |