#warning "REVISIT_PFS168: Need to verify and test GPIO power encodings." /* * drivers/pcmcia/sa1100_pfs168.c * * PFS168 PCMCIA specific routines * */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/init.h> #include <asm/hardware.h> #include <asm/mach-types.h> #include <asm/irq.h> #include "sa1100_generic.h" #include "sa1111_generic.h" static int pfs168_pcmcia_init(struct pcmcia_init *init) { /* TPS2211 to standby mode: */ PA_DWR &= ~(GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3); /* Set GPIO_A<3:0> to be outputs for PCMCIA (socket 0) power controller: */ PA_DDR &= ~(GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3); return sa1111_pcmcia_init(init); } static int pfs168_pcmcia_configure_socket(int sock, const struct pcmcia_configure *conf) { unsigned int pa_dwr_mask = 0, pa_dwr_set = 0; int ret; /* PFS168 uses the Texas Instruments TPS2211 for PCMCIA (socket 0) voltage control only, * with the following connections: * * TPS2211 PFS168 * * -VCCD0 SA-1111 GPIO A<0> * -VCCD0 SA-1111 GPIO A<1> * VPPD0 SA-1111 GPIO A<2> * VPPD0 SA-1111 GPIO A<2> * */ switch (sock) { case 0: pa_dwr_mask = GPIO_GPIO0 | GPIO_GPIO1 | GPIO_GPIO2 | GPIO_GPIO3; switch (conf->vcc) { default: case 0: pa_dwr_set = 0; break; case 33: pa_dwr_set = GPIO_GPIO0; break; case 50: pa_dwr_set = GPIO_GPIO1; break; } switch (conf->vpp) { case 0: break; case 120: printk(KERN_ERR "%s(): PFS-168 does not support VPP %uV\n", __FUNCTION__, conf->vpp / 10); return -1; break; default: if (conf->vpp == conf->vcc) pa_dwr_set |= GPIO_GPIO3; else { printk(KERN_ERR "%s(): unrecognized VPP %u\n", __FUNCTION__, conf->vpp); return -1; } } break; case 1: pa_dwr_mask = 0; pa_dwr_set = 0; switch (conf->vcc) { case 0: case 33: break; case 50: printk(KERN_ERR "%s(): PFS-168 CompactFlash socket does not support VCC %uV\n", __FUNCTION__, conf->vcc / 10); return -1; default: printk(KERN_ERR "%s(): unrecognized VCC %u\n", __FUNCTION__, conf->vcc); return -1; } if (conf->vpp != conf->vcc && conf->vpp != 0) { printk(KERN_ERR "%s(): CompactFlash socket does not support VPP %uV\n" __FUNCTION__, conf->vpp / 10); return -1; } break; } ret = sa1111_pcmcia_configure_socket(sock, conf); if (ret == 0) { unsigned long flags; local_irq_save(flags); PA_DWR = (PA_DWR & ~pa_dwr_mask) | pa_dwr_set; local_irq_restore(flags); } return 0; } static struct pcmcia_low_level pfs168_pcmcia_ops = { .owner = THIS_MODULE, .init = pfs168_pcmcia_init, .shutdown = sa1111_pcmcia_shutdown, .socket_state = sa1111_pcmcia_socket_state, .configure_socket = pfs168_pcmcia_configure_socket, .socket_init = sa1111_pcmcia_socket_init, .socket_suspend = sa1111_pcmcia_socket_suspend, }; int __init pcmcia_pfs168_init(struct device *dev) { int ret = -ENODEV; if (machine_is_pfs168()) ret = sa1100_register_pcmcia(&pfs168_pcmcia_ops, dev); return ret; } void __exit pcmcia_pfs168_exit(struct device *dev) { sa1100_unregister_pcmcia(&pfs168_pcmcia_ops, dev); }