// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/pcmcia/sa1111_generic.c * * We implement the generic parts of a SA1111 PCMCIA driver. This * basically means we handle everything except controlling the * power. Power is machine specific... */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/ioport.h> #include <linux/device.h> #include <linux/interrupt.h> #include <linux/init.h> #include <linux/io.h> #include <linux/slab.h> #include <pcmcia/ss.h> #include <mach/hardware.h> #include <asm/hardware/sa1111.h> #include <asm/mach-types.h> #include <asm/irq.h> #include "sa1111_generic.h" /* * These are offsets from the above base. */ #define PCCR 0x0000 #define PCSSR 0x0004 #define PCSR 0x0008 #define PCSR_S0_READY (1<<0) #define PCSR_S1_READY (1<<1) #define PCSR_S0_DETECT (1<<2) #define PCSR_S1_DETECT (1<<3) #define PCSR_S0_VS1 (1<<4) #define PCSR_S0_VS2 (1<<5) #define PCSR_S1_VS1 (1<<6) #define PCSR_S1_VS2 (1<<7) #define PCSR_S0_WP (1<<8) #define PCSR_S1_WP (1<<9) #define PCSR_S0_BVD1 (1<<10) #define PCSR_S0_BVD2 (1<<11) #define PCSR_S1_BVD1 (1<<12) #define PCSR_S1_BVD2 (1<<13) #define PCCR_S0_RST (1<<0) #define PCCR_S1_RST (1<<1) #define PCCR_S0_FLT (1<<2) #define PCCR_S1_FLT (1<<3) #define PCCR_S0_PWAITEN (1<<4) #define PCCR_S1_PWAITEN (1<<5) #define PCCR_S0_PSE (1<<6) #define PCCR_S1_PSE (1<<7) #define PCSSR_S0_SLEEP (1<<0) #define PCSSR_S1_SLEEP (1<<1) #define IDX_IRQ_S0_READY_NINT (0) #define IDX_IRQ_S0_CD_VALID (1) #define IDX_IRQ_S0_BVD1_STSCHG (2) #define IDX_IRQ_S1_READY_NINT (3) #define IDX_IRQ_S1_CD_VALID (4) #define IDX_IRQ_S1_BVD1_STSCHG (5) #define NUM_IRQS (6) void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { struct sa1111_pcmcia_socket *s = to_skt(skt); u32 status = readl_relaxed(s->dev->mapbase + PCSR); switch (skt->nr) { case 0: state->detect = status & PCSR_S0_DETECT ? 0 : 1; state->ready = status & PCSR_S0_READY ? 1 : 0; state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0; state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0; state->wrprot = status & PCSR_S0_WP ? 1 : 0; state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1; state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1; break; case 1: state->detect = status & PCSR_S1_DETECT ? 0 : 1; state->ready = status & PCSR_S1_READY ? 1 : 0; state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0; state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0; state->wrprot = status & PCSR_S1_WP ? 1 : 0; state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1; state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1; break; } } int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { struct sa1111_pcmcia_socket *s = to_skt(skt); u32 pccr_skt_mask, pccr_set_mask, val; unsigned long flags; switch (skt->nr) { case 0: pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE; break; case 1: pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE; break; default: return -1; } pccr_set_mask = 0; if (state->Vcc != 0) pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN; if (state->Vcc == 50) pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE; if (state->flags & SS_RESET) pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST; if (state->flags & SS_OUTPUT_ENA) pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT; local_irq_save(flags); val = readl_relaxed(s->dev->mapbase + PCCR); val &= ~pccr_skt_mask; val |= pccr_set_mask & pccr_skt_mask; writel_relaxed(val, s->dev->mapbase + PCCR); local_irq_restore(flags); return 0; } int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops, int (*add)(struct soc_pcmcia_socket *)) { struct sa1111_pcmcia_socket *s; struct clk *clk; int i, ret = 0, irqs[NUM_IRQS]; clk = devm_clk_get(&dev->dev, NULL); if (IS_ERR(clk)) return PTR_ERR(clk); for (i = 0; i < NUM_IRQS; i++) { irqs[i] = sa1111_get_irq(dev, i); if (irqs[i] <= 0) return irqs[i] ? : -ENXIO; } ops->socket_state = sa1111_pcmcia_socket_state; for (i = 0; i < ops->nr; i++) { s = kzalloc(sizeof(*s), GFP_KERNEL); if (!s) return -ENOMEM; s->soc.nr = ops->first + i; s->soc.clk = clk; soc_pcmcia_init_one(&s->soc, ops, &dev->dev); s->dev = dev; if (s->soc.nr) { s->soc.socket.pci_irq = irqs[IDX_IRQ_S1_READY_NINT]; s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S1_CD_VALID]; s->soc.stat[SOC_STAT_CD].name = "SA1111 CF card detect"; s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S1_BVD1_STSCHG]; s->soc.stat[SOC_STAT_BVD1].name = "SA1111 CF BVD1"; } else { s->soc.socket.pci_irq = irqs[IDX_IRQ_S0_READY_NINT]; s->soc.stat[SOC_STAT_CD].irq = irqs[IDX_IRQ_S0_CD_VALID]; s->soc.stat[SOC_STAT_CD].name = "SA1111 PCMCIA card detect"; s->soc.stat[SOC_STAT_BVD1].irq = irqs[IDX_IRQ_S0_BVD1_STSCHG]; s->soc.stat[SOC_STAT_BVD1].name = "SA1111 PCMCIA BVD1"; } ret = add(&s->soc); if (ret == 0) { s->next = dev_get_drvdata(&dev->dev); dev_set_drvdata(&dev->dev, s); } else kfree(s); } return ret; } static int pcmcia_probe(struct sa1111_dev *dev) { void __iomem *base; int ret; ret = sa1111_enable_device(dev); if (ret) return ret; dev_set_drvdata(&dev->dev, NULL); if (!request_mem_region(dev->res.start, 512, SA1111_DRIVER_NAME(dev))) { sa1111_disable_device(dev); return -EBUSY; } base = dev->mapbase; /* * Initialise the suspend state. */ writel_relaxed(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + PCSSR); writel_relaxed(PCCR_S0_FLT | PCCR_S1_FLT, base + PCCR); ret = -ENODEV; #ifdef CONFIG_SA1100_BADGE4 if (machine_is_badge4()) ret = pcmcia_badge4_init(dev); #endif #ifdef CONFIG_SA1100_JORNADA720 if (machine_is_jornada720()) ret = pcmcia_jornada720_init(dev); #endif #ifdef CONFIG_ARCH_LUBBOCK if (machine_is_lubbock()) ret = pcmcia_lubbock_init(dev); #endif #ifdef CONFIG_ASSABET_NEPONSET if (machine_is_assabet()) ret = pcmcia_neponset_init(dev); #endif if (ret) { release_mem_region(dev->res.start, 512); sa1111_disable_device(dev); } return ret; } static int pcmcia_remove(struct sa1111_dev *dev) { struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev); dev_set_drvdata(&dev->dev, NULL); for (; s; s = next) { next = s->next; soc_pcmcia_remove_one(&s->soc); kfree(s); } release_mem_region(dev->res.start, 512); sa1111_disable_device(dev); return 0; } static struct sa1111_driver pcmcia_driver = { .drv = { .name = "sa1111-pcmcia", }, .devid = SA1111_DEVID_PCMCIA, .probe = pcmcia_probe, .remove = pcmcia_remove, }; static int __init sa1111_drv_pcmcia_init(void) { return sa1111_driver_register(&pcmcia_driver); } static void __exit sa1111_drv_pcmcia_exit(void) { sa1111_driver_unregister(&pcmcia_driver); } fs_initcall(sa1111_drv_pcmcia_init); module_exit(sa1111_drv_pcmcia_exit); MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver"); MODULE_LICENSE("GPL");