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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/pcmcia/sa1100_cerf.c | |
download | lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz lwn-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/pcmcia/sa1100_cerf.c')
-rw-r--r-- | drivers/pcmcia/sa1100_cerf.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/drivers/pcmcia/sa1100_cerf.c b/drivers/pcmcia/sa1100_cerf.c new file mode 100644 index 000000000000..2b3c2895b43d --- /dev/null +++ b/drivers/pcmcia/sa1100_cerf.c @@ -0,0 +1,110 @@ +/* + * drivers/pcmcia/sa1100_cerf.c + * + * PCMCIA implementation routines for CerfBoard + * Based off the Assabet. + * + */ +#include <linux/config.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/device.h> +#include <linux/init.h> +#include <linux/delay.h> + +#include <asm/hardware.h> +#include <asm/mach-types.h> +#include <asm/irq.h> +#include <asm/arch/cerf.h> +#include "sa1100_generic.h" + +#define CERF_SOCKET 1 + +static struct pcmcia_irqs irqs[] = { + { CERF_SOCKET, CERF_IRQ_GPIO_CF_CD, "CF_CD" }, + { CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD2, "CF_BVD2" }, + { CERF_SOCKET, CERF_IRQ_GPIO_CF_BVD1, "CF_BVD1" } +}; + +static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + skt->irq = CERF_IRQ_GPIO_CF_IRQ; + + return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static void +cerf_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) +{ + unsigned long levels = GPLR; + + state->detect = (levels & CERF_GPIO_CF_CD) ?0:1; + state->ready = (levels & CERF_GPIO_CF_IRQ) ?1:0; + state->bvd1 = (levels & CERF_GPIO_CF_BVD1)?1:0; + state->bvd2 = (levels & CERF_GPIO_CF_BVD2)?1:0; + state->wrprot = 0; + state->vs_3v = 1; + state->vs_Xv = 0; +} + +static int +cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, + const socket_state_t *state) +{ + switch (state->Vcc) { + case 0: + case 50: + case 33: + break; + + default: + printk(KERN_ERR "%s(): unrecognized Vcc %u\n", + __FUNCTION__, state->Vcc); + return -1; + } + + if (state->flags & SS_RESET) { + GPSR = CERF_GPIO_CF_RESET; + } else { + GPCR = CERF_GPIO_CF_RESET; + } + + return 0; +} + +static void cerf_pcmcia_socket_init(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static void cerf_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static struct pcmcia_low_level cerf_pcmcia_ops = { + .owner = THIS_MODULE, + .hw_init = cerf_pcmcia_hw_init, + .hw_shutdown = cerf_pcmcia_hw_shutdown, + .socket_state = cerf_pcmcia_socket_state, + .configure_socket = cerf_pcmcia_configure_socket, + + .socket_init = cerf_pcmcia_socket_init, + .socket_suspend = cerf_pcmcia_socket_suspend, +}; + +int __init pcmcia_cerf_init(struct device *dev) +{ + int ret = -ENODEV; + + if (machine_is_cerf()) + ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1); + + return ret; +} |