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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/pcmcia/sa1100_assabet.c | |
download | linux-fsl-qoriq-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-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_assabet.c')
-rw-r--r-- | drivers/pcmcia/sa1100_assabet.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/drivers/pcmcia/sa1100_assabet.c b/drivers/pcmcia/sa1100_assabet.c new file mode 100644 index 0000000..7c57fdd --- /dev/null +++ b/drivers/pcmcia/sa1100_assabet.c @@ -0,0 +1,141 @@ +/* + * drivers/pcmcia/sa1100_assabet.c + * + * PCMCIA implementation routines for Assabet + * + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/device.h> +#include <linux/init.h> + +#include <asm/hardware.h> +#include <asm/mach-types.h> +#include <asm/irq.h> +#include <asm/signal.h> +#include <asm/arch/assabet.h> + +#include "sa1100_generic.h" + +static struct pcmcia_irqs irqs[] = { + { 1, ASSABET_IRQ_GPIO_CF_CD, "CF CD" }, + { 1, ASSABET_IRQ_GPIO_CF_BVD2, "CF BVD2" }, + { 1, ASSABET_IRQ_GPIO_CF_BVD1, "CF BVD1" }, +}; + +static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + skt->irq = ASSABET_IRQ_GPIO_CF_IRQ; + + return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +/* + * Release all resources. + */ +static void assabet_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static void +assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) +{ + unsigned long levels = GPLR; + + state->detect = (levels & ASSABET_GPIO_CF_CD) ? 0 : 1; + state->ready = (levels & ASSABET_GPIO_CF_IRQ) ? 1 : 0; + state->bvd1 = (levels & ASSABET_GPIO_CF_BVD1) ? 1 : 0; + state->bvd2 = (levels & ASSABET_GPIO_CF_BVD2) ? 1 : 0; + state->wrprot = 0; /* Not available on Assabet. */ + state->vs_3v = 1; /* Can only apply 3.3V on Assabet. */ + state->vs_Xv = 0; +} + +static int +assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) +{ + unsigned int mask; + + switch (state->Vcc) { + case 0: + mask = 0; + break; + + case 50: + printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n", + __FUNCTION__); + + case 33: /* Can only apply 3.3V to the CF slot. */ + mask = ASSABET_BCR_CF_PWR; + break; + + default: + printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__, + state->Vcc); + return -1; + } + + /* Silently ignore Vpp, output enable, speaker enable. */ + + if (state->flags & SS_RESET) + mask |= ASSABET_BCR_CF_RST; + + ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR, mask); + + return 0; +} + +/* + * Enable card status IRQs on (re-)initialisation. This can + * be called at initialisation, power management event, or + * pcmcia event. + */ +static void assabet_pcmcia_socket_init(struct soc_pcmcia_socket *skt) +{ + /* + * Enable CF bus + */ + ASSABET_BCR_clear(ASSABET_BCR_CF_BUS_OFF); + + soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +/* + * Disable card status IRQs on suspend. + */ +static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); + + /* + * Tristate the CF bus signals. Also assert CF + * reset as per user guide page 4-11. + */ + ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST); +} + +static struct pcmcia_low_level assabet_pcmcia_ops = { + .owner = THIS_MODULE, + + .hw_init = assabet_pcmcia_hw_init, + .hw_shutdown = assabet_pcmcia_hw_shutdown, + + .socket_state = assabet_pcmcia_socket_state, + .configure_socket = assabet_pcmcia_configure_socket, + + .socket_init = assabet_pcmcia_socket_init, + .socket_suspend = assabet_pcmcia_socket_suspend, +}; + +int __init pcmcia_assabet_init(struct device *dev) +{ + int ret = -ENODEV; + + if (machine_is_assabet() && !machine_has_neponset()) + ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1); + + return ret; +} |