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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 /arch/arm/mach-sa1100/generic.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 'arch/arm/mach-sa1100/generic.c')
-rw-r--r-- | arch/arm/mach-sa1100/generic.c | 470 |
1 files changed, 470 insertions, 0 deletions
diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c new file mode 100644 index 000000000..0c586047d --- /dev/null +++ b/arch/arm/mach-sa1100/generic.c @@ -0,0 +1,470 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * linux/arch/arm/mach-sa1100/generic.c + * + * Author: Nicolas Pitre + * + * Code common to all SA11x0 machines. + */ +#include <linux/gpio.h> +#include <linux/gpio/machine.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/pm.h> +#include <linux/cpufreq.h> +#include <linux/ioport.h> +#include <linux/platform_device.h> +#include <linux/reboot.h> +#include <linux/regulator/fixed.h> +#include <linux/regulator/machine.h> +#include <linux/irqchip/irq-sa11x0.h> + +#include <video/sa1100fb.h> + +#include <soc/sa1100/pwer.h> + +#include <asm/div64.h> +#include <asm/mach/map.h> +#include <asm/mach/flash.h> +#include <asm/irq.h> +#include <asm/system_misc.h> + +#include <mach/hardware.h> +#include <mach/irqs.h> +#include <mach/reset.h> + +#include "generic.h" +#include <clocksource/pxa.h> + +#define NR_FREQS 16 + +/* + * This table is setup for a 3.6864MHz Crystal. + */ +struct cpufreq_frequency_table sa11x0_freq_table[NR_FREQS+1] = { + { .frequency = 59000, /* 59.0 MHz */}, + { .frequency = 73700, /* 73.7 MHz */}, + { .frequency = 88500, /* 88.5 MHz */}, + { .frequency = 103200, /* 103.2 MHz */}, + { .frequency = 118000, /* 118.0 MHz */}, + { .frequency = 132700, /* 132.7 MHz */}, + { .frequency = 147500, /* 147.5 MHz */}, + { .frequency = 162200, /* 162.2 MHz */}, + { .frequency = 176900, /* 176.9 MHz */}, + { .frequency = 191700, /* 191.7 MHz */}, + { .frequency = 206400, /* 206.4 MHz */}, + { .frequency = 221200, /* 221.2 MHz */}, + { .frequency = 235900, /* 235.9 MHz */}, + { .frequency = 250700, /* 250.7 MHz */}, + { .frequency = 265400, /* 265.4 MHz */}, + { .frequency = 280200, /* 280.2 MHz */}, + { .frequency = CPUFREQ_TABLE_END, }, +}; + +unsigned int sa11x0_getspeed(unsigned int cpu) +{ + if (cpu) + return 0; + return sa11x0_freq_table[PPCR & 0xf].frequency; +} + +/* + * Default power-off for SA1100 + */ +static void sa1100_power_off(void) +{ + mdelay(100); + local_irq_disable(); + /* disable internal oscillator, float CS lines */ + PCFR = (PCFR_OPDE | PCFR_FP | PCFR_FS); + /* enable wake-up on GPIO0 (Assabet...) */ + PWER = GFER = GRER = 1; + /* + * set scratchpad to zero, just in case it is used as a + * restart address by the bootloader. + */ + PSPR = 0; + /* enter sleep mode */ + PMCR = PMCR_SF; +} + +void sa11x0_restart(enum reboot_mode mode, const char *cmd) +{ + clear_reset_status(RESET_STATUS_ALL); + + if (mode == REBOOT_SOFT) { + /* Jump into ROM at address 0 */ + soft_restart(0); + } else { + /* Use on-chip reset capability */ + RSRR = RSRR_SWR; + } +} + +static void sa11x0_register_device(struct platform_device *dev, void *data) +{ + int err; + dev->dev.platform_data = data; + err = platform_device_register(dev); + if (err) + printk(KERN_ERR "Unable to register device %s: %d\n", + dev->name, err); +} + + +static struct resource sa11x0udc_resources[] = { + [0] = DEFINE_RES_MEM(__PREG(Ser0UDCCR), SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser0UDC), +}; + +static u64 sa11x0udc_dma_mask = 0xffffffffUL; + +static struct platform_device sa11x0udc_device = { + .name = "sa11x0-udc", + .id = -1, + .dev = { + .dma_mask = &sa11x0udc_dma_mask, + .coherent_dma_mask = 0xffffffff, + }, + .num_resources = ARRAY_SIZE(sa11x0udc_resources), + .resource = sa11x0udc_resources, +}; + +static struct resource sa11x0uart1_resources[] = { + [0] = DEFINE_RES_MEM(__PREG(Ser1UTCR0), SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser1UART), +}; + +static struct platform_device sa11x0uart1_device = { + .name = "sa11x0-uart", + .id = 1, + .num_resources = ARRAY_SIZE(sa11x0uart1_resources), + .resource = sa11x0uart1_resources, +}; + +static struct resource sa11x0uart3_resources[] = { + [0] = DEFINE_RES_MEM(__PREG(Ser3UTCR0), SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser3UART), +}; + +static struct platform_device sa11x0uart3_device = { + .name = "sa11x0-uart", + .id = 3, + .num_resources = ARRAY_SIZE(sa11x0uart3_resources), + .resource = sa11x0uart3_resources, +}; + +static struct resource sa11x0mcp_resources[] = { + [0] = DEFINE_RES_MEM(__PREG(Ser4MCCR0), SZ_64K), + [1] = DEFINE_RES_MEM(__PREG(Ser4MCCR1), 4), + [2] = DEFINE_RES_IRQ(IRQ_Ser4MCP), +}; + +static u64 sa11x0mcp_dma_mask = 0xffffffffUL; + +static struct platform_device sa11x0mcp_device = { + .name = "sa11x0-mcp", + .id = -1, + .dev = { + .dma_mask = &sa11x0mcp_dma_mask, + .coherent_dma_mask = 0xffffffff, + }, + .num_resources = ARRAY_SIZE(sa11x0mcp_resources), + .resource = sa11x0mcp_resources, +}; + +void __init sa11x0_ppc_configure_mcp(void) +{ + /* Setup the PPC unit for the MCP */ + PPDR &= ~PPC_RXD4; + PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM; + PSDR |= PPC_RXD4; + PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); + PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM); +} + +void sa11x0_register_mcp(struct mcp_plat_data *data) +{ + sa11x0_register_device(&sa11x0mcp_device, data); +} + +static struct resource sa11x0ssp_resources[] = { + [0] = DEFINE_RES_MEM(0x80070000, SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_Ser4SSP), +}; + +static u64 sa11x0ssp_dma_mask = 0xffffffffUL; + +static struct platform_device sa11x0ssp_device = { + .name = "sa11x0-ssp", + .id = -1, + .dev = { + .dma_mask = &sa11x0ssp_dma_mask, + .coherent_dma_mask = 0xffffffff, + }, + .num_resources = ARRAY_SIZE(sa11x0ssp_resources), + .resource = sa11x0ssp_resources, +}; + +static struct resource sa11x0fb_resources[] = { + [0] = DEFINE_RES_MEM(0xb0100000, SZ_64K), + [1] = DEFINE_RES_IRQ(IRQ_LCD), +}; + +static struct platform_device sa11x0fb_device = { + .name = "sa11x0-fb", + .id = -1, + .dev = { + .coherent_dma_mask = 0xffffffff, + }, + .num_resources = ARRAY_SIZE(sa11x0fb_resources), + .resource = sa11x0fb_resources, +}; + +void sa11x0_register_lcd(struct sa1100fb_mach_info *inf) +{ + sa11x0_register_device(&sa11x0fb_device, inf); +} + +void sa11x0_register_pcmcia(int socket, struct gpiod_lookup_table *table) +{ + if (table) + gpiod_add_lookup_table(table); + platform_device_register_simple("sa11x0-pcmcia", socket, NULL, 0); +} + +static struct platform_device sa11x0mtd_device = { + .name = "sa1100-mtd", + .id = -1, +}; + +void sa11x0_register_mtd(struct flash_platform_data *flash, + struct resource *res, int nr) +{ + flash->name = "sa1100"; + sa11x0mtd_device.resource = res; + sa11x0mtd_device.num_resources = nr; + sa11x0_register_device(&sa11x0mtd_device, flash); +} + +static struct resource sa1100_rtc_resources[] = { + DEFINE_RES_MEM(0x90010000, 0x40), + DEFINE_RES_IRQ_NAMED(IRQ_RTC1Hz, "rtc 1Hz"), + DEFINE_RES_IRQ_NAMED(IRQ_RTCAlrm, "rtc alarm"), +}; + +static struct platform_device sa11x0rtc_device = { + .name = "sa1100-rtc", + .id = -1, + .num_resources = ARRAY_SIZE(sa1100_rtc_resources), + .resource = sa1100_rtc_resources, +}; + +static struct resource sa11x0dma_resources[] = { + DEFINE_RES_MEM(DMA_PHYS, DMA_SIZE), + DEFINE_RES_IRQ(IRQ_DMA0), + DEFINE_RES_IRQ(IRQ_DMA1), + DEFINE_RES_IRQ(IRQ_DMA2), + DEFINE_RES_IRQ(IRQ_DMA3), + DEFINE_RES_IRQ(IRQ_DMA4), + DEFINE_RES_IRQ(IRQ_DMA5), +}; + +static u64 sa11x0dma_dma_mask = DMA_BIT_MASK(32); + +static struct platform_device sa11x0dma_device = { + .name = "sa11x0-dma", + .id = -1, + .dev = { + .dma_mask = &sa11x0dma_dma_mask, + .coherent_dma_mask = 0xffffffff, + }, + .num_resources = ARRAY_SIZE(sa11x0dma_resources), + .resource = sa11x0dma_resources, +}; + +static struct platform_device *sa11x0_devices[] __initdata = { + &sa11x0udc_device, + &sa11x0uart1_device, + &sa11x0uart3_device, + &sa11x0ssp_device, + &sa11x0rtc_device, + &sa11x0dma_device, +}; + +static int __init sa1100_init(void) +{ + struct resource wdt_res = DEFINE_RES_MEM(0x90000000, 0x20); + pm_power_off = sa1100_power_off; + + regulator_has_full_constraints(); + + platform_device_register_simple("sa1100_wdt", -1, &wdt_res, 1); + + return platform_add_devices(sa11x0_devices, ARRAY_SIZE(sa11x0_devices)); +} + +arch_initcall(sa1100_init); + +void __init sa11x0_init_late(void) +{ + sa11x0_pm_init(); +} + +int __init sa11x0_register_fixed_regulator(int n, + struct fixed_voltage_config *cfg, + struct regulator_consumer_supply *supplies, unsigned num_supplies, + bool uses_gpio) +{ + struct regulator_init_data *id; + + cfg->init_data = id = kzalloc(sizeof(*cfg->init_data), GFP_KERNEL); + if (!cfg->init_data) + return -ENOMEM; + + if (!uses_gpio) + id->constraints.always_on = 1; + id->constraints.name = cfg->supply_name; + id->constraints.min_uV = cfg->microvolts; + id->constraints.max_uV = cfg->microvolts; + id->constraints.valid_modes_mask = REGULATOR_MODE_NORMAL; + id->constraints.valid_ops_mask = REGULATOR_CHANGE_STATUS; + id->consumer_supplies = supplies; + id->num_consumer_supplies = num_supplies; + + platform_device_register_resndata(NULL, "reg-fixed-voltage", n, + NULL, 0, cfg, sizeof(*cfg)); + return 0; +} + +/* + * Common I/O mapping: + * + * Typically, static virtual address mappings are as follow: + * + * 0xf0000000-0xf3ffffff: miscellaneous stuff (CPLDs, etc.) + * 0xf4000000-0xf4ffffff: SA-1111 + * 0xf5000000-0xf5ffffff: reserved (used by cache flushing area) + * 0xf6000000-0xfffeffff: reserved (internal SA1100 IO defined above) + * 0xffff0000-0xffff0fff: SA1100 exception vectors + * 0xffff2000-0xffff2fff: Minicache copy_user_page area + * + * Below 0xe8000000 is reserved for vm allocation. + * + * The machine specific code must provide the extra mapping beside the + * default mapping provided here. + */ + +static struct map_desc standard_io_desc[] __initdata = { + { /* PCM */ + .virtual = 0xf8000000, + .pfn = __phys_to_pfn(0x80000000), + .length = 0x00100000, + .type = MT_DEVICE + }, { /* SCM */ + .virtual = 0xfa000000, + .pfn = __phys_to_pfn(0x90000000), + .length = 0x00100000, + .type = MT_DEVICE + }, { /* MER */ + .virtual = 0xfc000000, + .pfn = __phys_to_pfn(0xa0000000), + .length = 0x00100000, + .type = MT_DEVICE + }, { /* LCD + DMA */ + .virtual = 0xfe000000, + .pfn = __phys_to_pfn(0xb0000000), + .length = 0x00200000, + .type = MT_DEVICE + }, +}; + +void __init sa1100_map_io(void) +{ + iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); +} + +void __init sa1100_timer_init(void) +{ + pxa_timer_nodt_init(IRQ_OST0, io_p2v(0x90000000)); +} + +static struct resource irq_resource = + DEFINE_RES_MEM_NAMED(0x90050000, SZ_64K, "irqs"); + +void __init sa1100_init_irq(void) +{ + request_resource(&iomem_resource, &irq_resource); + + sa11x0_init_irq_nodt(IRQ_GPIO0_SC, irq_resource.start); + + sa1100_init_gpio(); + sa11xx_clk_init(); +} + +/* + * Disable the memory bus request/grant signals on the SA1110 to + * ensure that we don't receive spurious memory requests. We set + * the MBGNT signal false to ensure the SA1111 doesn't own the + * SDRAM bus. + */ +void sa1110_mb_disable(void) +{ + unsigned long flags; + + local_irq_save(flags); + + PGSR &= ~GPIO_MBGNT; + GPCR = GPIO_MBGNT; + GPDR = (GPDR & ~GPIO_MBREQ) | GPIO_MBGNT; + + GAFR &= ~(GPIO_MBGNT | GPIO_MBREQ); + + local_irq_restore(flags); +} + +/* + * If the system is going to use the SA-1111 DMA engines, set up + * the memory bus request/grant pins. + */ +void sa1110_mb_enable(void) +{ + unsigned long flags; + + local_irq_save(flags); + + PGSR &= ~GPIO_MBGNT; + GPCR = GPIO_MBGNT; + GPDR = (GPDR & ~GPIO_MBREQ) | GPIO_MBGNT; + + GAFR |= (GPIO_MBGNT | GPIO_MBREQ); + TUCR |= TUCR_MR; + + local_irq_restore(flags); +} + +int sa11x0_gpio_set_wake(unsigned int gpio, unsigned int on) +{ + if (on) + PWER |= BIT(gpio); + else + PWER &= ~BIT(gpio); + + return 0; +} + +int sa11x0_sc_set_wake(unsigned int irq, unsigned int on) +{ + if (BIT(irq) != IC_RTCAlrm) + return -EINVAL; + + if (on) + PWER |= PWER_RTC; + else + PWER &= ~PWER_RTC; + + return 0; +} |