diff options
Diffstat (limited to 'drivers/pcmcia/sa1111_generic.c')
| -rw-r--r-- | drivers/pcmcia/sa1111_generic.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/drivers/pcmcia/sa1111_generic.c b/drivers/pcmcia/sa1111_generic.c new file mode 100644 index 0000000..bd9d6b2 --- /dev/null +++ b/drivers/pcmcia/sa1111_generic.c @@ -0,0 +1,196 @@ +/* + * 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/config.h> +#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 <pcmcia/ss.h> + +#include <asm/hardware.h> +#include <asm/hardware/sa1111.h> +#include <asm/io.h> +#include <asm/irq.h> + +#include "sa1111_generic.h" + +static struct pcmcia_irqs irqs[] = { + { 0, IRQ_S0_CD_VALID, "SA1111 PCMCIA card detect" }, + { 0, IRQ_S0_BVD1_STSCHG, "SA1111 PCMCIA BVD1" }, + { 1, IRQ_S1_CD_VALID, "SA1111 CF card detect" }, + { 1, IRQ_S1_BVD1_STSCHG, "SA1111 CF BVD1" }, +}; + +int sa1111_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + if (skt->irq == NO_IRQ) + skt->irq = skt->nr ? IRQ_S1_READY_NINT : IRQ_S0_READY_NINT; + + return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +void sa1111_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +void sa1111_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) +{ + struct sa1111_dev *sadev = SA1111_DEV(skt->dev); + unsigned long status = sa1111_readl(sadev->mapbase + SA1111_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_dev *sadev = SA1111_DEV(skt->dev); + unsigned int 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 = sa1111_readl(sadev->mapbase + SA1111_PCCR); + val &= ~pccr_skt_mask; + val |= pccr_set_mask & pccr_skt_mask; + sa1111_writel(val, sadev->mapbase + SA1111_PCCR); + local_irq_restore(flags); + + return 0; +} + +void sa1111_pcmcia_socket_init(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +void sa1111_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static int pcmcia_probe(struct sa1111_dev *dev) +{ + char *base; + + if (!request_mem_region(dev->res.start, 512, + SA1111_DRIVER_NAME(dev))) + return -EBUSY; + + base = dev->mapbase; + + /* + * Initialise the suspend state. + */ + sa1111_writel(PCSSR_S0_SLEEP | PCSSR_S1_SLEEP, base + SA1111_PCSSR); + sa1111_writel(PCCR_S0_FLT | PCCR_S1_FLT, base + SA1111_PCCR); + +#ifdef CONFIG_SA1100_BADGE4 + pcmcia_badge4_init(&dev->dev); +#endif +#ifdef CONFIG_SA1100_JORNADA720 + pcmcia_jornada720_init(&dev->dev); +#endif +#ifdef CONFIG_ARCH_LUBBOCK + pcmcia_lubbock_init(dev); +#endif +#ifdef CONFIG_ASSABET_NEPONSET + pcmcia_neponset_init(dev); +#endif + return 0; +} + +static int __devexit pcmcia_remove(struct sa1111_dev *dev) +{ + soc_common_drv_pcmcia_remove(&dev->dev); + release_mem_region(dev->res.start, 512); + return 0; +} + +static int pcmcia_suspend(struct sa1111_dev *dev, u32 state) +{ + return pcmcia_socket_dev_suspend(&dev->dev, state); +} + +static int pcmcia_resume(struct sa1111_dev *dev) +{ + return pcmcia_socket_dev_resume(&dev->dev); +} + +static struct sa1111_driver pcmcia_driver = { + .drv = { + .name = "sa1111-pcmcia", + }, + .devid = SA1111_DEVID_PCMCIA, + .probe = pcmcia_probe, + .remove = __devexit_p(pcmcia_remove), + .suspend = pcmcia_suspend, + .resume = pcmcia_resume, +}; + +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); +} + +module_init(sa1111_drv_pcmcia_init); +module_exit(sa1111_drv_pcmcia_exit); + +MODULE_DESCRIPTION("SA1111 PCMCIA card socket driver"); +MODULE_LICENSE("GPL"); |
