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(). ... --- arch/mips/include/asm/mach-au1x00/gpio-au1000.h | 532 ++++++++++++++++++++++++ 1 file changed, 532 insertions(+) create mode 100644 arch/mips/include/asm/mach-au1x00/gpio-au1000.h (limited to 'arch/mips/include/asm/mach-au1x00/gpio-au1000.h') diff --git a/arch/mips/include/asm/mach-au1x00/gpio-au1000.h b/arch/mips/include/asm/mach-au1x00/gpio-au1000.h new file mode 100644 index 000000000..adde1fa50 --- /dev/null +++ b/arch/mips/include/asm/mach-au1x00/gpio-au1000.h @@ -0,0 +1,532 @@ +/* + * GPIO functions for Au1000, Au1500, Au1100, Au1550, Au1200 + * + * Copyright (c) 2009 Manuel Lauss. + * + * Licensed under the terms outlined in the file COPYING. + */ + +#ifndef _ALCHEMY_GPIO_AU1000_H_ +#define _ALCHEMY_GPIO_AU1000_H_ + +#include + +/* The default GPIO numberspace as documented in the Alchemy manuals. + * GPIO0-31 from GPIO1 block, GPIO200-215 from GPIO2 block. + */ +#define ALCHEMY_GPIO1_BASE 0 +#define ALCHEMY_GPIO2_BASE 200 + +#define ALCHEMY_GPIO1_NUM 32 +#define ALCHEMY_GPIO2_NUM 16 +#define ALCHEMY_GPIO1_MAX (ALCHEMY_GPIO1_BASE + ALCHEMY_GPIO1_NUM - 1) +#define ALCHEMY_GPIO2_MAX (ALCHEMY_GPIO2_BASE + ALCHEMY_GPIO2_NUM - 1) + +#define MAKE_IRQ(intc, off) (AU1000_INTC##intc##_INT_BASE + (off)) + +/* GPIO1 registers within SYS_ area */ +#define AU1000_SYS_TRIOUTRD 0x100 +#define AU1000_SYS_TRIOUTCLR 0x100 +#define AU1000_SYS_OUTPUTRD 0x108 +#define AU1000_SYS_OUTPUTSET 0x108 +#define AU1000_SYS_OUTPUTCLR 0x10C +#define AU1000_SYS_PINSTATERD 0x110 +#define AU1000_SYS_PININPUTEN 0x110 + +/* register offsets within GPIO2 block */ +#define AU1000_GPIO2_DIR 0x00 +#define AU1000_GPIO2_OUTPUT 0x08 +#define AU1000_GPIO2_PINSTATE 0x0C +#define AU1000_GPIO2_INTENABLE 0x10 +#define AU1000_GPIO2_ENABLE 0x14 + +struct gpio; + +static inline int au1000_gpio1_to_irq(int gpio) +{ + return MAKE_IRQ(1, gpio - ALCHEMY_GPIO1_BASE); +} + +static inline int au1000_gpio2_to_irq(int gpio) +{ + return -ENXIO; +} + +static inline int au1000_irq_to_gpio(int irq) +{ + if ((irq >= AU1000_GPIO0_INT) && (irq <= AU1000_GPIO31_INT)) + return ALCHEMY_GPIO1_BASE + (irq - AU1000_GPIO0_INT) + 0; + + return -ENXIO; +} + +static inline int au1500_gpio1_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO1_BASE; + + switch (gpio) { + case 0 ... 15: + case 20: + case 23 ... 28: return MAKE_IRQ(1, gpio); + } + + return -ENXIO; +} + +static inline int au1500_gpio2_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO2_BASE; + + switch (gpio) { + case 0 ... 3: return MAKE_IRQ(1, 16 + gpio - 0); + case 4 ... 5: return MAKE_IRQ(1, 21 + gpio - 4); + case 6 ... 7: return MAKE_IRQ(1, 29 + gpio - 6); + } + + return -ENXIO; +} + +static inline int au1500_irq_to_gpio(int irq) +{ + switch (irq) { + case AU1500_GPIO0_INT ... AU1500_GPIO15_INT: + case AU1500_GPIO20_INT: + case AU1500_GPIO23_INT ... AU1500_GPIO28_INT: + return ALCHEMY_GPIO1_BASE + (irq - AU1500_GPIO0_INT) + 0; + case AU1500_GPIO200_INT ... AU1500_GPIO203_INT: + return ALCHEMY_GPIO2_BASE + (irq - AU1500_GPIO200_INT) + 0; + case AU1500_GPIO204_INT ... AU1500_GPIO205_INT: + return ALCHEMY_GPIO2_BASE + (irq - AU1500_GPIO204_INT) + 4; + case AU1500_GPIO206_INT ... AU1500_GPIO207_INT: + return ALCHEMY_GPIO2_BASE + (irq - AU1500_GPIO206_INT) + 6; + case AU1500_GPIO208_215_INT: + return ALCHEMY_GPIO2_BASE + 8; + } + + return -ENXIO; +} + +static inline int au1100_gpio1_to_irq(int gpio) +{ + return MAKE_IRQ(1, gpio - ALCHEMY_GPIO1_BASE); +} + +static inline int au1100_gpio2_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO2_BASE; + + if ((gpio >= 8) && (gpio <= 15)) + return MAKE_IRQ(0, 29); /* shared GPIO208_215 */ + + return -ENXIO; +} + +static inline int au1100_irq_to_gpio(int irq) +{ + switch (irq) { + case AU1100_GPIO0_INT ... AU1100_GPIO31_INT: + return ALCHEMY_GPIO1_BASE + (irq - AU1100_GPIO0_INT) + 0; + case AU1100_GPIO208_215_INT: + return ALCHEMY_GPIO2_BASE + 8; + } + + return -ENXIO; +} + +static inline int au1550_gpio1_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO1_BASE; + + switch (gpio) { + case 0 ... 15: + case 20 ... 28: return MAKE_IRQ(1, gpio); + case 16 ... 17: return MAKE_IRQ(1, 18 + gpio - 16); + } + + return -ENXIO; +} + +static inline int au1550_gpio2_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO2_BASE; + + switch (gpio) { + case 0: return MAKE_IRQ(1, 16); + case 1 ... 5: return MAKE_IRQ(1, 17); /* shared GPIO201_205 */ + case 6 ... 7: return MAKE_IRQ(1, 29 + gpio - 6); + case 8 ... 15: return MAKE_IRQ(1, 31); /* shared GPIO208_215 */ + } + + return -ENXIO; +} + +static inline int au1550_irq_to_gpio(int irq) +{ + switch (irq) { + case AU1550_GPIO0_INT ... AU1550_GPIO15_INT: + return ALCHEMY_GPIO1_BASE + (irq - AU1550_GPIO0_INT) + 0; + case AU1550_GPIO200_INT: + case AU1550_GPIO201_205_INT: + return ALCHEMY_GPIO2_BASE + (irq - AU1550_GPIO200_INT) + 0; + case AU1550_GPIO16_INT ... AU1550_GPIO28_INT: + return ALCHEMY_GPIO1_BASE + (irq - AU1550_GPIO16_INT) + 16; + case AU1550_GPIO206_INT ... AU1550_GPIO208_215_INT: + return ALCHEMY_GPIO2_BASE + (irq - AU1550_GPIO206_INT) + 6; + } + + return -ENXIO; +} + +static inline int au1200_gpio1_to_irq(int gpio) +{ + return MAKE_IRQ(1, gpio - ALCHEMY_GPIO1_BASE); +} + +static inline int au1200_gpio2_to_irq(int gpio) +{ + gpio -= ALCHEMY_GPIO2_BASE; + + switch (gpio) { + case 0 ... 2: return MAKE_IRQ(0, 5 + gpio - 0); + case 3: return MAKE_IRQ(0, 22); + case 4 ... 7: return MAKE_IRQ(0, 24 + gpio - 4); + case 8 ... 15: return MAKE_IRQ(0, 28); /* shared GPIO208_215 */ + } + + return -ENXIO; +} + +static inline int au1200_irq_to_gpio(int irq) +{ + switch (irq) { + case AU1200_GPIO0_INT ... AU1200_GPIO31_INT: + return ALCHEMY_GPIO1_BASE + (irq - AU1200_GPIO0_INT) + 0; + case AU1200_GPIO200_INT ... AU1200_GPIO202_INT: + return ALCHEMY_GPIO2_BASE + (irq - AU1200_GPIO200_INT) + 0; + case AU1200_GPIO203_INT: + return ALCHEMY_GPIO2_BASE + 3; + case AU1200_GPIO204_INT ... AU1200_GPIO208_215_INT: + return ALCHEMY_GPIO2_BASE + (irq - AU1200_GPIO204_INT) + 4; + } + + return -ENXIO; +} + +/* + * GPIO1 block macros for common linux gpio functions. + */ +static inline void alchemy_gpio1_set_value(int gpio, int v) +{ + unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE); + unsigned long r = v ? AU1000_SYS_OUTPUTSET : AU1000_SYS_OUTPUTCLR; + alchemy_wrsys(mask, r); +} + +static inline int alchemy_gpio1_get_value(int gpio) +{ + unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE); + return alchemy_rdsys(AU1000_SYS_PINSTATERD) & mask; +} + +static inline int alchemy_gpio1_direction_input(int gpio) +{ + unsigned long mask = 1 << (gpio - ALCHEMY_GPIO1_BASE); + alchemy_wrsys(mask, AU1000_SYS_TRIOUTCLR); + return 0; +} + +static inline int alchemy_gpio1_direction_output(int gpio, int v) +{ + /* hardware switches to "output" mode when one of the two + * "set_value" registers is accessed. + */ + alchemy_gpio1_set_value(gpio, v); + return 0; +} + +static inline int alchemy_gpio1_is_valid(int gpio) +{ + return ((gpio >= ALCHEMY_GPIO1_BASE) && (gpio <= ALCHEMY_GPIO1_MAX)); +} + +static inline int alchemy_gpio1_to_irq(int gpio) +{ + switch (alchemy_get_cputype()) { + case ALCHEMY_CPU_AU1000: + return au1000_gpio1_to_irq(gpio); + case ALCHEMY_CPU_AU1100: + return au1100_gpio1_to_irq(gpio); + case ALCHEMY_CPU_AU1500: + return au1500_gpio1_to_irq(gpio); + case ALCHEMY_CPU_AU1550: + return au1550_gpio1_to_irq(gpio); + case ALCHEMY_CPU_AU1200: + return au1200_gpio1_to_irq(gpio); + } + return -ENXIO; +} + +/* On Au1000, Au1500 and Au1100 GPIOs won't work as inputs before + * SYS_PININPUTEN is written to at least once. On Au1550/Au1200/Au1300 this + * register enables use of GPIOs as wake source. + */ +static inline void alchemy_gpio1_input_enable(void) +{ + void __iomem *base = (void __iomem *)KSEG1ADDR(AU1000_SYS_PHYS_ADDR); + __raw_writel(0, base + 0x110); /* the write op is key */ + wmb(); +} + +/* + * GPIO2 block macros for common linux GPIO functions. The 'gpio' + * parameter must be in range of ALCHEMY_GPIO2_BASE..ALCHEMY_GPIO2_MAX. + */ +static inline void __alchemy_gpio2_mod_dir(int gpio, int to_out) +{ + void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR); + unsigned long mask = 1 << (gpio - ALCHEMY_GPIO2_BASE); + unsigned long d = __raw_readl(base + AU1000_GPIO2_DIR); + + if (to_out) + d |= mask; + else + d &= ~mask; + __raw_writel(d, base + AU1000_GPIO2_DIR); + wmb(); +} + +static inline void alchemy_gpio2_set_value(int gpio, int v) +{ + void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR); + unsigned long mask; + mask = ((v) ? 0x00010001 : 0x00010000) << (gpio - ALCHEMY_GPIO2_BASE); + __raw_writel(mask, base + AU1000_GPIO2_OUTPUT); + wmb(); +} + +static inline int alchemy_gpio2_get_value(int gpio) +{ + void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR); + return __raw_readl(base + AU1000_GPIO2_PINSTATE) & + (1 << (gpio - ALCHEMY_GPIO2_BASE)); +} + +static inline int alchemy_gpio2_direction_input(int gpio) +{ + unsigned long flags; + local_irq_save(flags); + __alchemy_gpio2_mod_dir(gpio, 0); + local_irq_restore(flags); + return 0; +} + +static inline int alchemy_gpio2_direction_output(int gpio, int v) +{ + unsigned long flags; + alchemy_gpio2_set_value(gpio, v); + local_irq_save(flags); + __alchemy_gpio2_mod_dir(gpio, 1); + local_irq_restore(flags); + return 0; +} + +static inline int alchemy_gpio2_is_valid(int gpio) +{ + return ((gpio >= ALCHEMY_GPIO2_BASE) && (gpio <= ALCHEMY_GPIO2_MAX)); +} + +static inline int alchemy_gpio2_to_irq(int gpio) +{ + switch (alchemy_get_cputype()) { + case ALCHEMY_CPU_AU1000: + return au1000_gpio2_to_irq(gpio); + case ALCHEMY_CPU_AU1100: + return au1100_gpio2_to_irq(gpio); + case ALCHEMY_CPU_AU1500: + return au1500_gpio2_to_irq(gpio); + case ALCHEMY_CPU_AU1550: + return au1550_gpio2_to_irq(gpio); + case ALCHEMY_CPU_AU1200: + return au1200_gpio2_to_irq(gpio); + } + return -ENXIO; +} + +/**********************************************************************/ + +/* GPIO2 shared interrupts and control */ + +static inline void __alchemy_gpio2_mod_int(int gpio2, int en) +{ + void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR); + unsigned long r = __raw_readl(base + AU1000_GPIO2_INTENABLE); + if (en) + r |= 1 << gpio2; + else + r &= ~(1 << gpio2); + __raw_writel(r, base + AU1000_GPIO2_INTENABLE); + wmb(); +} + +/** + * alchemy_gpio2_enable_int - Enable a GPIO2 pins' shared irq contribution. + * @gpio2: The GPIO2 pin to activate (200...215). + * + * GPIO208-215 have one shared interrupt line to the INTC. They are + * and'ed with a per-pin enable bit and finally or'ed together to form + * a single irq request (useful for active-high sources). + * With this function, a pins' individual contribution to the int request + * can be enabled. As with all other GPIO-based interrupts, the INTC + * must be programmed to accept the GPIO208_215 interrupt as well. + * + * NOTE: Calling this macro is only necessary for GPIO208-215; all other + * GPIO2-based interrupts have their own request to the INTC. Please + * consult your Alchemy databook for more information! + * + * NOTE: On the Au1550, GPIOs 201-205 also have a shared interrupt request + * line to the INTC, GPIO201_205. This function can be used for those + * as well. + * + * NOTE: 'gpio2' parameter must be in range of the GPIO2 numberspace + * (200-215 by default). No sanity checks are made, + */ +static inline void alchemy_gpio2_enable_int(int gpio2) +{ + unsigned long flags; + + gpio2 -= ALCHEMY_GPIO2_BASE; + + /* Au1100/Au1500 have GPIO208-215 enable bits at 0..7 */ + switch (alchemy_get_cputype()) { + case ALCHEMY_CPU_AU1100: + case ALCHEMY_CPU_AU1500: + gpio2 -= 8; + } + + local_irq_save(flags); + __alchemy_gpio2_mod_int(gpio2, 1); + local_irq_restore(flags); +} + +/** + * alchemy_gpio2_disable_int - Disable a GPIO2 pins' shared irq contribution. + * @gpio2: The GPIO2 pin to activate (200...215). + * + * see function alchemy_gpio2_enable_int() for more information. + */ +static inline void alchemy_gpio2_disable_int(int gpio2) +{ + unsigned long flags; + + gpio2 -= ALCHEMY_GPIO2_BASE; + + /* Au1100/Au1500 have GPIO208-215 enable bits at 0..7 */ + switch (alchemy_get_cputype()) { + case ALCHEMY_CPU_AU1100: + case ALCHEMY_CPU_AU1500: + gpio2 -= 8; + } + + local_irq_save(flags); + __alchemy_gpio2_mod_int(gpio2, 0); + local_irq_restore(flags); +} + +/** + * alchemy_gpio2_enable - Activate GPIO2 block. + * + * The GPIO2 block must be enabled excplicitly to work. On systems + * where this isn't done by the bootloader, this macro can be used. + */ +static inline void alchemy_gpio2_enable(void) +{ + void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR); + __raw_writel(3, base + AU1000_GPIO2_ENABLE); /* reset, clock enabled */ + wmb(); + __raw_writel(1, base + AU1000_GPIO2_ENABLE); /* clock enabled */ + wmb(); +} + +/** + * alchemy_gpio2_disable - disable GPIO2 block. + * + * Disable and put GPIO2 block in low-power mode. + */ +static inline void alchemy_gpio2_disable(void) +{ + void __iomem *base = (void __iomem *)KSEG1ADDR(AU1500_GPIO2_PHYS_ADDR); + __raw_writel(2, base + AU1000_GPIO2_ENABLE); /* reset, clock disabled */ + wmb(); +} + +/**********************************************************************/ + +/* wrappers for on-chip gpios; can be used before gpio chips have been + * registered with gpiolib. + */ +static inline int alchemy_gpio_direction_input(int gpio) +{ + return (gpio >= ALCHEMY_GPIO2_BASE) ? + alchemy_gpio2_direction_input(gpio) : + alchemy_gpio1_direction_input(gpio); +} + +static inline int alchemy_gpio_direction_output(int gpio, int v) +{ + return (gpio >= ALCHEMY_GPIO2_BASE) ? + alchemy_gpio2_direction_output(gpio, v) : + alchemy_gpio1_direction_output(gpio, v); +} + +static inline int alchemy_gpio_get_value(int gpio) +{ + return (gpio >= ALCHEMY_GPIO2_BASE) ? + alchemy_gpio2_get_value(gpio) : + alchemy_gpio1_get_value(gpio); +} + +static inline void alchemy_gpio_set_value(int gpio, int v) +{ + if (gpio >= ALCHEMY_GPIO2_BASE) + alchemy_gpio2_set_value(gpio, v); + else + alchemy_gpio1_set_value(gpio, v); +} + +static inline int alchemy_gpio_is_valid(int gpio) +{ + return (gpio >= ALCHEMY_GPIO2_BASE) ? + alchemy_gpio2_is_valid(gpio) : + alchemy_gpio1_is_valid(gpio); +} + +static inline int alchemy_gpio_cansleep(int gpio) +{ + return 0; /* Alchemy never gets tired */ +} + +static inline int alchemy_gpio_to_irq(int gpio) +{ + return (gpio >= ALCHEMY_GPIO2_BASE) ? + alchemy_gpio2_to_irq(gpio) : + alchemy_gpio1_to_irq(gpio); +} + +static inline int alchemy_irq_to_gpio(int irq) +{ + switch (alchemy_get_cputype()) { + case ALCHEMY_CPU_AU1000: + return au1000_irq_to_gpio(irq); + case ALCHEMY_CPU_AU1100: + return au1100_irq_to_gpio(irq); + case ALCHEMY_CPU_AU1500: + return au1500_irq_to_gpio(irq); + case ALCHEMY_CPU_AU1550: + return au1550_irq_to_gpio(irq); + case ALCHEMY_CPU_AU1200: + return au1200_irq_to_gpio(irq); + } + return -ENXIO; +} + +#endif /* _ALCHEMY_GPIO_AU1000_H_ */ -- cgit v1.2.3