08fa159003
The IRQs for card detect and status change are currently hardcoded in SA1111 PCMCIA driver, which can be actually obtained from the .irq[] from 'struct sa1111_dev' to keep it generic. Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
252 lines
6.2 KiB
C
252 lines
6.2 KiB
C
/*
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* linux/drivers/pcmcia/sa1111_generic.c
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*
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* We implement the generic parts of a SA1111 PCMCIA driver. This
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* basically means we handle everything except controlling the
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* power. Power is machine specific...
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/ioport.h>
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#include <linux/device.h>
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#include <linux/interrupt.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <pcmcia/ss.h>
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#include <mach/hardware.h>
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#include <asm/hardware/sa1111.h>
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#include <asm/irq.h>
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#include "sa1111_generic.h"
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#define IDX_IRQ_S0_READY_NINT (0)
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#define IDX_IRQ_S0_CD_VALID (1)
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#define IDX_IRQ_S0_BVD1_STSCHG (2)
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#define IDX_IRQ_S1_READY_NINT (3)
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#define IDX_IRQ_S1_CD_VALID (4)
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#define IDX_IRQ_S1_BVD1_STSCHG (5)
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static struct pcmcia_irqs irqs[] = {
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{ 0, NO_IRQ, "SA1111 PCMCIA card detect" },
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{ 0, NO_IRQ, "SA1111 PCMCIA BVD1" },
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{ 1, NO_IRQ, "SA1111 CF card detect" },
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{ 1, NO_IRQ, "SA1111 CF BVD1" },
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};
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static int sa1111_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
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{
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return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
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}
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static void sa1111_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
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{
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soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
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}
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void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state)
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{
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struct sa1111_pcmcia_socket *s = to_skt(skt);
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unsigned long status = sa1111_readl(s->dev->mapbase + SA1111_PCSR);
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switch (skt->nr) {
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case 0:
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state->detect = status & PCSR_S0_DETECT ? 0 : 1;
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state->ready = status & PCSR_S0_READY ? 1 : 0;
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state->bvd1 = status & PCSR_S0_BVD1 ? 1 : 0;
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state->bvd2 = status & PCSR_S0_BVD2 ? 1 : 0;
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state->wrprot = status & PCSR_S0_WP ? 1 : 0;
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state->vs_3v = status & PCSR_S0_VS1 ? 0 : 1;
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state->vs_Xv = status & PCSR_S0_VS2 ? 0 : 1;
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break;
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case 1:
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state->detect = status & PCSR_S1_DETECT ? 0 : 1;
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state->ready = status & PCSR_S1_READY ? 1 : 0;
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state->bvd1 = status & PCSR_S1_BVD1 ? 1 : 0;
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state->bvd2 = status & PCSR_S1_BVD2 ? 1 : 0;
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state->wrprot = status & PCSR_S1_WP ? 1 : 0;
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state->vs_3v = status & PCSR_S1_VS1 ? 0 : 1;
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state->vs_Xv = status & PCSR_S1_VS2 ? 0 : 1;
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break;
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}
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}
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int sa1111_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
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{
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struct sa1111_pcmcia_socket *s = to_skt(skt);
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unsigned int pccr_skt_mask, pccr_set_mask, val;
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unsigned long flags;
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switch (skt->nr) {
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case 0:
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pccr_skt_mask = PCCR_S0_RST|PCCR_S0_FLT|PCCR_S0_PWAITEN|PCCR_S0_PSE;
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break;
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case 1:
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pccr_skt_mask = PCCR_S1_RST|PCCR_S1_FLT|PCCR_S1_PWAITEN|PCCR_S1_PSE;
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break;
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default:
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return -1;
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}
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pccr_set_mask = 0;
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if (state->Vcc != 0)
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pccr_set_mask |= PCCR_S0_PWAITEN|PCCR_S1_PWAITEN;
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if (state->Vcc == 50)
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pccr_set_mask |= PCCR_S0_PSE|PCCR_S1_PSE;
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if (state->flags & SS_RESET)
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pccr_set_mask |= PCCR_S0_RST|PCCR_S1_RST;
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if (state->flags & SS_OUTPUT_ENA)
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pccr_set_mask |= PCCR_S0_FLT|PCCR_S1_FLT;
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local_irq_save(flags);
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val = sa1111_readl(s->dev->mapbase + SA1111_PCCR);
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val &= ~pccr_skt_mask;
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val |= pccr_set_mask & pccr_skt_mask;
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sa1111_writel(val, s->dev->mapbase + SA1111_PCCR);
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local_irq_restore(flags);
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return 0;
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}
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void sa1111_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
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{
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soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs));
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}
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static void sa1111_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
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{
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soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs));
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}
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int sa1111_pcmcia_add(struct sa1111_dev *dev, struct pcmcia_low_level *ops,
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int (*add)(struct soc_pcmcia_socket *))
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{
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struct sa1111_pcmcia_socket *s;
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int i, ret = 0;
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ops->hw_init = sa1111_pcmcia_hw_init;
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ops->hw_shutdown = sa1111_pcmcia_hw_shutdown;
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ops->socket_state = sa1111_pcmcia_socket_state;
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ops->socket_suspend = sa1111_pcmcia_socket_suspend;
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for (i = 0; i < ops->nr; i++) {
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s = kzalloc(sizeof(*s), GFP_KERNEL);
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if (!s)
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return -ENOMEM;
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s->soc.nr = ops->first + i;
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s->soc.ops = ops;
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s->soc.socket.owner = ops->owner;
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s->soc.socket.dev.parent = &dev->dev;
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s->soc.socket.pci_irq = s->soc.nr ?
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dev->irq[IDX_IRQ_S0_READY_NINT] :
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dev->irq[IDX_IRQ_S1_READY_NINT];
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s->dev = dev;
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ret = add(&s->soc);
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if (ret == 0) {
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s->next = dev_get_drvdata(&dev->dev);
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dev_set_drvdata(&dev->dev, s);
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} else
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kfree(s);
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}
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return ret;
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}
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static int pcmcia_probe(struct sa1111_dev *dev)
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{
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void __iomem *base;
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dev_set_drvdata(&dev->dev, NULL);
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if (!request_mem_region(dev->res.start, 512,
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SA1111_DRIVER_NAME(dev)))
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return -EBUSY;
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base = dev->mapbase;
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/* Initialize PCMCIA IRQs */
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irqs[0].irq = dev->irq[IDX_IRQ_S0_CD_VALID];
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irqs[1].irq = dev->irq[IDX_IRQ_S0_BVD1_STSCHG];
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irqs[2].irq = dev->irq[IDX_IRQ_S1_CD_VALID];
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irqs[3].irq = dev->irq[IDX_IRQ_S1_BVD1_STSCHG];
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/*
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* Initialise the suspend state.
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*/
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sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + SA1111_PCSSR);
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sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + SA1111_PCCR);
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#ifdef CONFIG_SA1100_BADGE4
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pcmcia_badge4_init(&dev->dev);
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#endif
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#ifdef CONFIG_SA1100_JORNADA720
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pcmcia_jornada720_init(&dev->dev);
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#endif
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#ifdef CONFIG_ARCH_LUBBOCK
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pcmcia_lubbock_init(dev);
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#endif
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#ifdef CONFIG_ASSABET_NEPONSET
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pcmcia_neponset_init(dev);
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#endif
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return 0;
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}
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static int __devexit pcmcia_remove(struct sa1111_dev *dev)
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{
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struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev);
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dev_set_drvdata(&dev->dev, NULL);
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for (; next = s->next, s; s = next) {
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soc_pcmcia_remove_one(&s->soc);
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kfree(s);
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}
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release_mem_region(dev->res.start, 512);
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return 0;
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}
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static int pcmcia_suspend(struct sa1111_dev *dev, pm_message_t state)
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{
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return pcmcia_socket_dev_suspend(&dev->dev);
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}
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static int pcmcia_resume(struct sa1111_dev *dev)
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{
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return pcmcia_socket_dev_resume(&dev->dev);
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}
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static struct sa1111_driver pcmcia_driver = {
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.drv = {
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.name = "sa1111-pcmcia",
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},
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.devid = SA1111_DEVID_PCMCIA,
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.probe = pcmcia_probe,
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.remove = __devexit_p(pcmcia_remove),
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.suspend = pcmcia_suspend,
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.resume = pcmcia_resume,
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};
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static int __init sa1111_drv_pcmcia_init(void)
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{
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return sa1111_driver_register(&pcmcia_driver);
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}
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static void __exit sa1111_drv_pcmcia_exit(void)
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{
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sa1111_driver_unregister(&pcmcia_driver);
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}
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fs_initcall(sa1111_drv_pcmcia_init);
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module_exit(sa1111_drv_pcmcia_exit);
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MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver");
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MODULE_LICENSE("GPL");
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