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/gpio/gpio-lpc32xx.c | 547 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 547 insertions(+) create mode 100644 drivers/gpio/gpio-lpc32xx.c (limited to 'drivers/gpio/gpio-lpc32xx.c') diff --git a/drivers/gpio/gpio-lpc32xx.c b/drivers/gpio/gpio-lpc32xx.c new file mode 100644 index 000000000..d2b65cfb3 --- /dev/null +++ b/drivers/gpio/gpio-lpc32xx.c @@ -0,0 +1,547 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * GPIO driver for LPC32xx SoC + * + * Author: Kevin Wells + * + * Copyright (C) 2010 NXP Semiconductors + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define LPC32XX_GPIO_P3_INP_STATE (0x000) +#define LPC32XX_GPIO_P3_OUTP_SET (0x004) +#define LPC32XX_GPIO_P3_OUTP_CLR (0x008) +#define LPC32XX_GPIO_P3_OUTP_STATE (0x00C) +#define LPC32XX_GPIO_P2_DIR_SET (0x010) +#define LPC32XX_GPIO_P2_DIR_CLR (0x014) +#define LPC32XX_GPIO_P2_DIR_STATE (0x018) +#define LPC32XX_GPIO_P2_INP_STATE (0x01C) +#define LPC32XX_GPIO_P2_OUTP_SET (0x020) +#define LPC32XX_GPIO_P2_OUTP_CLR (0x024) +#define LPC32XX_GPIO_P2_MUX_SET (0x028) +#define LPC32XX_GPIO_P2_MUX_CLR (0x02C) +#define LPC32XX_GPIO_P2_MUX_STATE (0x030) +#define LPC32XX_GPIO_P0_INP_STATE (0x040) +#define LPC32XX_GPIO_P0_OUTP_SET (0x044) +#define LPC32XX_GPIO_P0_OUTP_CLR (0x048) +#define LPC32XX_GPIO_P0_OUTP_STATE (0x04C) +#define LPC32XX_GPIO_P0_DIR_SET (0x050) +#define LPC32XX_GPIO_P0_DIR_CLR (0x054) +#define LPC32XX_GPIO_P0_DIR_STATE (0x058) +#define LPC32XX_GPIO_P1_INP_STATE (0x060) +#define LPC32XX_GPIO_P1_OUTP_SET (0x064) +#define LPC32XX_GPIO_P1_OUTP_CLR (0x068) +#define LPC32XX_GPIO_P1_OUTP_STATE (0x06C) +#define LPC32XX_GPIO_P1_DIR_SET (0x070) +#define LPC32XX_GPIO_P1_DIR_CLR (0x074) +#define LPC32XX_GPIO_P1_DIR_STATE (0x078) + +#define GPIO012_PIN_TO_BIT(x) (1 << (x)) +#define GPIO3_PIN_TO_BIT(x) (1 << ((x) + 25)) +#define GPO3_PIN_TO_BIT(x) (1 << (x)) +#define GPIO012_PIN_IN_SEL(x, y) (((x) >> (y)) & 1) +#define GPIO3_PIN_IN_SHIFT(x) ((x) == 5 ? 24 : 10 + (x)) +#define GPIO3_PIN_IN_SEL(x, y) (((x) >> GPIO3_PIN_IN_SHIFT(y)) & 1) +#define GPIO3_PIN5_IN_SEL(x) (((x) >> 24) & 1) +#define GPI3_PIN_IN_SEL(x, y) (((x) >> (y)) & 1) +#define GPO3_PIN_IN_SEL(x, y) (((x) >> (y)) & 1) + +#define LPC32XX_GPIO_P0_MAX 8 +#define LPC32XX_GPIO_P1_MAX 24 +#define LPC32XX_GPIO_P2_MAX 13 +#define LPC32XX_GPIO_P3_MAX 6 +#define LPC32XX_GPI_P3_MAX 29 +#define LPC32XX_GPO_P3_MAX 24 + +#define LPC32XX_GPIO_P0_GRP 0 +#define LPC32XX_GPIO_P1_GRP (LPC32XX_GPIO_P0_GRP + LPC32XX_GPIO_P0_MAX) +#define LPC32XX_GPIO_P2_GRP (LPC32XX_GPIO_P1_GRP + LPC32XX_GPIO_P1_MAX) +#define LPC32XX_GPIO_P3_GRP (LPC32XX_GPIO_P2_GRP + LPC32XX_GPIO_P2_MAX) +#define LPC32XX_GPI_P3_GRP (LPC32XX_GPIO_P3_GRP + LPC32XX_GPIO_P3_MAX) +#define LPC32XX_GPO_P3_GRP (LPC32XX_GPI_P3_GRP + LPC32XX_GPI_P3_MAX) + +struct gpio_regs { + unsigned long inp_state; + unsigned long outp_state; + unsigned long outp_set; + unsigned long outp_clr; + unsigned long dir_set; + unsigned long dir_clr; +}; + +/* + * GPIO names + */ +static const char *gpio_p0_names[LPC32XX_GPIO_P0_MAX] = { + "p0.0", "p0.1", "p0.2", "p0.3", + "p0.4", "p0.5", "p0.6", "p0.7" +}; + +static const char *gpio_p1_names[LPC32XX_GPIO_P1_MAX] = { + "p1.0", "p1.1", "p1.2", "p1.3", + "p1.4", "p1.5", "p1.6", "p1.7", + "p1.8", "p1.9", "p1.10", "p1.11", + "p1.12", "p1.13", "p1.14", "p1.15", + "p1.16", "p1.17", "p1.18", "p1.19", + "p1.20", "p1.21", "p1.22", "p1.23", +}; + +static const char *gpio_p2_names[LPC32XX_GPIO_P2_MAX] = { + "p2.0", "p2.1", "p2.2", "p2.3", + "p2.4", "p2.5", "p2.6", "p2.7", + "p2.8", "p2.9", "p2.10", "p2.11", + "p2.12" +}; + +static const char *gpio_p3_names[LPC32XX_GPIO_P3_MAX] = { + "gpio00", "gpio01", "gpio02", "gpio03", + "gpio04", "gpio05" +}; + +static const char *gpi_p3_names[LPC32XX_GPI_P3_MAX] = { + "gpi00", "gpi01", "gpi02", "gpi03", + "gpi04", "gpi05", "gpi06", "gpi07", + "gpi08", "gpi09", NULL, NULL, + NULL, NULL, NULL, "gpi15", + "gpi16", "gpi17", "gpi18", "gpi19", + "gpi20", "gpi21", "gpi22", "gpi23", + "gpi24", "gpi25", "gpi26", "gpi27", + "gpi28" +}; + +static const char *gpo_p3_names[LPC32XX_GPO_P3_MAX] = { + "gpo00", "gpo01", "gpo02", "gpo03", + "gpo04", "gpo05", "gpo06", "gpo07", + "gpo08", "gpo09", "gpo10", "gpo11", + "gpo12", "gpo13", "gpo14", "gpo15", + "gpo16", "gpo17", "gpo18", "gpo19", + "gpo20", "gpo21", "gpo22", "gpo23" +}; + +static struct gpio_regs gpio_grp_regs_p0 = { + .inp_state = LPC32XX_GPIO_P0_INP_STATE, + .outp_set = LPC32XX_GPIO_P0_OUTP_SET, + .outp_clr = LPC32XX_GPIO_P0_OUTP_CLR, + .dir_set = LPC32XX_GPIO_P0_DIR_SET, + .dir_clr = LPC32XX_GPIO_P0_DIR_CLR, +}; + +static struct gpio_regs gpio_grp_regs_p1 = { + .inp_state = LPC32XX_GPIO_P1_INP_STATE, + .outp_set = LPC32XX_GPIO_P1_OUTP_SET, + .outp_clr = LPC32XX_GPIO_P1_OUTP_CLR, + .dir_set = LPC32XX_GPIO_P1_DIR_SET, + .dir_clr = LPC32XX_GPIO_P1_DIR_CLR, +}; + +static struct gpio_regs gpio_grp_regs_p2 = { + .inp_state = LPC32XX_GPIO_P2_INP_STATE, + .outp_set = LPC32XX_GPIO_P2_OUTP_SET, + .outp_clr = LPC32XX_GPIO_P2_OUTP_CLR, + .dir_set = LPC32XX_GPIO_P2_DIR_SET, + .dir_clr = LPC32XX_GPIO_P2_DIR_CLR, +}; + +static struct gpio_regs gpio_grp_regs_p3 = { + .inp_state = LPC32XX_GPIO_P3_INP_STATE, + .outp_state = LPC32XX_GPIO_P3_OUTP_STATE, + .outp_set = LPC32XX_GPIO_P3_OUTP_SET, + .outp_clr = LPC32XX_GPIO_P3_OUTP_CLR, + .dir_set = LPC32XX_GPIO_P2_DIR_SET, + .dir_clr = LPC32XX_GPIO_P2_DIR_CLR, +}; + +struct lpc32xx_gpio_chip { + struct gpio_chip chip; + struct gpio_regs *gpio_grp; + void __iomem *reg_base; +}; + +static inline u32 gpreg_read(struct lpc32xx_gpio_chip *group, unsigned long offset) +{ + return __raw_readl(group->reg_base + offset); +} + +static inline void gpreg_write(struct lpc32xx_gpio_chip *group, u32 val, unsigned long offset) +{ + __raw_writel(val, group->reg_base + offset); +} + +static void __set_gpio_dir_p012(struct lpc32xx_gpio_chip *group, + unsigned pin, int input) +{ + if (input) + gpreg_write(group, GPIO012_PIN_TO_BIT(pin), + group->gpio_grp->dir_clr); + else + gpreg_write(group, GPIO012_PIN_TO_BIT(pin), + group->gpio_grp->dir_set); +} + +static void __set_gpio_dir_p3(struct lpc32xx_gpio_chip *group, + unsigned pin, int input) +{ + u32 u = GPIO3_PIN_TO_BIT(pin); + + if (input) + gpreg_write(group, u, group->gpio_grp->dir_clr); + else + gpreg_write(group, u, group->gpio_grp->dir_set); +} + +static void __set_gpio_level_p012(struct lpc32xx_gpio_chip *group, + unsigned pin, int high) +{ + if (high) + gpreg_write(group, GPIO012_PIN_TO_BIT(pin), + group->gpio_grp->outp_set); + else + gpreg_write(group, GPIO012_PIN_TO_BIT(pin), + group->gpio_grp->outp_clr); +} + +static void __set_gpio_level_p3(struct lpc32xx_gpio_chip *group, + unsigned pin, int high) +{ + u32 u = GPIO3_PIN_TO_BIT(pin); + + if (high) + gpreg_write(group, u, group->gpio_grp->outp_set); + else + gpreg_write(group, u, group->gpio_grp->outp_clr); +} + +static void __set_gpo_level_p3(struct lpc32xx_gpio_chip *group, + unsigned pin, int high) +{ + if (high) + gpreg_write(group, GPO3_PIN_TO_BIT(pin), group->gpio_grp->outp_set); + else + gpreg_write(group, GPO3_PIN_TO_BIT(pin), group->gpio_grp->outp_clr); +} + +static int __get_gpio_state_p012(struct lpc32xx_gpio_chip *group, + unsigned pin) +{ + return GPIO012_PIN_IN_SEL(gpreg_read(group, group->gpio_grp->inp_state), + pin); +} + +static int __get_gpio_state_p3(struct lpc32xx_gpio_chip *group, + unsigned pin) +{ + int state = gpreg_read(group, group->gpio_grp->inp_state); + + /* + * P3 GPIO pin input mapping is not contiguous, GPIOP3-0..4 is mapped + * to bits 10..14, while GPIOP3-5 is mapped to bit 24. + */ + return GPIO3_PIN_IN_SEL(state, pin); +} + +static int __get_gpi_state_p3(struct lpc32xx_gpio_chip *group, + unsigned pin) +{ + return GPI3_PIN_IN_SEL(gpreg_read(group, group->gpio_grp->inp_state), pin); +} + +static int __get_gpo_state_p3(struct lpc32xx_gpio_chip *group, + unsigned pin) +{ + return GPO3_PIN_IN_SEL(gpreg_read(group, group->gpio_grp->outp_state), pin); +} + +/* + * GPIO primitives. + */ +static int lpc32xx_gpio_dir_input_p012(struct gpio_chip *chip, + unsigned pin) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + __set_gpio_dir_p012(group, pin, 1); + + return 0; +} + +static int lpc32xx_gpio_dir_input_p3(struct gpio_chip *chip, + unsigned pin) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + __set_gpio_dir_p3(group, pin, 1); + + return 0; +} + +static int lpc32xx_gpio_dir_in_always(struct gpio_chip *chip, + unsigned pin) +{ + return 0; +} + +static int lpc32xx_gpio_get_value_p012(struct gpio_chip *chip, unsigned pin) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + return !!__get_gpio_state_p012(group, pin); +} + +static int lpc32xx_gpio_get_value_p3(struct gpio_chip *chip, unsigned pin) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + return !!__get_gpio_state_p3(group, pin); +} + +static int lpc32xx_gpi_get_value(struct gpio_chip *chip, unsigned pin) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + return !!__get_gpi_state_p3(group, pin); +} + +static int lpc32xx_gpio_dir_output_p012(struct gpio_chip *chip, unsigned pin, + int value) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + __set_gpio_level_p012(group, pin, value); + __set_gpio_dir_p012(group, pin, 0); + + return 0; +} + +static int lpc32xx_gpio_dir_output_p3(struct gpio_chip *chip, unsigned pin, + int value) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + __set_gpio_level_p3(group, pin, value); + __set_gpio_dir_p3(group, pin, 0); + + return 0; +} + +static int lpc32xx_gpio_dir_out_always(struct gpio_chip *chip, unsigned pin, + int value) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + __set_gpo_level_p3(group, pin, value); + return 0; +} + +static void lpc32xx_gpio_set_value_p012(struct gpio_chip *chip, unsigned pin, + int value) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + __set_gpio_level_p012(group, pin, value); +} + +static void lpc32xx_gpio_set_value_p3(struct gpio_chip *chip, unsigned pin, + int value) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + __set_gpio_level_p3(group, pin, value); +} + +static void lpc32xx_gpo_set_value(struct gpio_chip *chip, unsigned pin, + int value) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + __set_gpo_level_p3(group, pin, value); +} + +static int lpc32xx_gpo_get_value(struct gpio_chip *chip, unsigned pin) +{ + struct lpc32xx_gpio_chip *group = gpiochip_get_data(chip); + + return !!__get_gpo_state_p3(group, pin); +} + +static int lpc32xx_gpio_request(struct gpio_chip *chip, unsigned pin) +{ + if (pin < chip->ngpio) + return 0; + + return -EINVAL; +} + +static int lpc32xx_gpio_to_irq_p01(struct gpio_chip *chip, unsigned offset) +{ + return -ENXIO; +} + +static int lpc32xx_gpio_to_irq_gpio_p3(struct gpio_chip *chip, unsigned offset) +{ + return -ENXIO; +} + +static int lpc32xx_gpio_to_irq_gpi_p3(struct gpio_chip *chip, unsigned offset) +{ + return -ENXIO; +} + +static struct lpc32xx_gpio_chip lpc32xx_gpiochip[] = { + { + .chip = { + .label = "gpio_p0", + .direction_input = lpc32xx_gpio_dir_input_p012, + .get = lpc32xx_gpio_get_value_p012, + .direction_output = lpc32xx_gpio_dir_output_p012, + .set = lpc32xx_gpio_set_value_p012, + .request = lpc32xx_gpio_request, + .to_irq = lpc32xx_gpio_to_irq_p01, + .base = LPC32XX_GPIO_P0_GRP, + .ngpio = LPC32XX_GPIO_P0_MAX, + .names = gpio_p0_names, + .can_sleep = false, + }, + .gpio_grp = &gpio_grp_regs_p0, + }, + { + .chip = { + .label = "gpio_p1", + .direction_input = lpc32xx_gpio_dir_input_p012, + .get = lpc32xx_gpio_get_value_p012, + .direction_output = lpc32xx_gpio_dir_output_p012, + .set = lpc32xx_gpio_set_value_p012, + .request = lpc32xx_gpio_request, + .to_irq = lpc32xx_gpio_to_irq_p01, + .base = LPC32XX_GPIO_P1_GRP, + .ngpio = LPC32XX_GPIO_P1_MAX, + .names = gpio_p1_names, + .can_sleep = false, + }, + .gpio_grp = &gpio_grp_regs_p1, + }, + { + .chip = { + .label = "gpio_p2", + .direction_input = lpc32xx_gpio_dir_input_p012, + .get = lpc32xx_gpio_get_value_p012, + .direction_output = lpc32xx_gpio_dir_output_p012, + .set = lpc32xx_gpio_set_value_p012, + .request = lpc32xx_gpio_request, + .base = LPC32XX_GPIO_P2_GRP, + .ngpio = LPC32XX_GPIO_P2_MAX, + .names = gpio_p2_names, + .can_sleep = false, + }, + .gpio_grp = &gpio_grp_regs_p2, + }, + { + .chip = { + .label = "gpio_p3", + .direction_input = lpc32xx_gpio_dir_input_p3, + .get = lpc32xx_gpio_get_value_p3, + .direction_output = lpc32xx_gpio_dir_output_p3, + .set = lpc32xx_gpio_set_value_p3, + .request = lpc32xx_gpio_request, + .to_irq = lpc32xx_gpio_to_irq_gpio_p3, + .base = LPC32XX_GPIO_P3_GRP, + .ngpio = LPC32XX_GPIO_P3_MAX, + .names = gpio_p3_names, + .can_sleep = false, + }, + .gpio_grp = &gpio_grp_regs_p3, + }, + { + .chip = { + .label = "gpi_p3", + .direction_input = lpc32xx_gpio_dir_in_always, + .get = lpc32xx_gpi_get_value, + .request = lpc32xx_gpio_request, + .to_irq = lpc32xx_gpio_to_irq_gpi_p3, + .base = LPC32XX_GPI_P3_GRP, + .ngpio = LPC32XX_GPI_P3_MAX, + .names = gpi_p3_names, + .can_sleep = false, + }, + .gpio_grp = &gpio_grp_regs_p3, + }, + { + .chip = { + .label = "gpo_p3", + .direction_output = lpc32xx_gpio_dir_out_always, + .set = lpc32xx_gpo_set_value, + .get = lpc32xx_gpo_get_value, + .request = lpc32xx_gpio_request, + .base = LPC32XX_GPO_P3_GRP, + .ngpio = LPC32XX_GPO_P3_MAX, + .names = gpo_p3_names, + .can_sleep = false, + }, + .gpio_grp = &gpio_grp_regs_p3, + }, +}; + +static int lpc32xx_of_xlate(struct gpio_chip *gc, + const struct of_phandle_args *gpiospec, u32 *flags) +{ + /* Is this the correct bank? */ + u32 bank = gpiospec->args[0]; + if ((bank >= ARRAY_SIZE(lpc32xx_gpiochip) || + (gc != &lpc32xx_gpiochip[bank].chip))) + return -EINVAL; + + if (flags) + *flags = gpiospec->args[2]; + return gpiospec->args[1]; +} + +static int lpc32xx_gpio_probe(struct platform_device *pdev) +{ + int i; + void __iomem *reg_base; + + reg_base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(reg_base)) + return PTR_ERR(reg_base); + + for (i = 0; i < ARRAY_SIZE(lpc32xx_gpiochip); i++) { + lpc32xx_gpiochip[i].chip.parent = &pdev->dev; + if (pdev->dev.of_node) { + lpc32xx_gpiochip[i].chip.of_xlate = lpc32xx_of_xlate; + lpc32xx_gpiochip[i].chip.of_gpio_n_cells = 3; + lpc32xx_gpiochip[i].reg_base = reg_base; + } + devm_gpiochip_add_data(&pdev->dev, &lpc32xx_gpiochip[i].chip, + &lpc32xx_gpiochip[i]); + } + + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id lpc32xx_gpio_of_match[] = { + { .compatible = "nxp,lpc3220-gpio", }, + { }, +}; +#endif + +static struct platform_driver lpc32xx_gpio_driver = { + .driver = { + .name = "lpc32xx-gpio", + .of_match_table = of_match_ptr(lpc32xx_gpio_of_match), + }, + .probe = lpc32xx_gpio_probe, +}; + +module_platform_driver(lpc32xx_gpio_driver); + +MODULE_AUTHOR("Kevin Wells "); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("GPIO driver for LPC32xx SoC"); -- cgit v1.2.3