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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_h3600.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_h3600.c')
-rw-r--r-- | drivers/pcmcia/sa1100_h3600.c | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/drivers/pcmcia/sa1100_h3600.c b/drivers/pcmcia/sa1100_h3600.c new file mode 100644 index 0000000..64fd5e3 --- /dev/null +++ b/drivers/pcmcia/sa1100_h3600.c @@ -0,0 +1,142 @@ +/* + * drivers/pcmcia/sa1100_h3600.c + * + * PCMCIA implementation routines for H3600 + * + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/device.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/delay.h> + +#include <asm/hardware.h> +#include <asm/irq.h> +#include <asm/mach-types.h> +#include <asm/arch/h3600.h> + +#include "sa1100_generic.h" + +static struct pcmcia_irqs irqs[] = { + { 0, IRQ_GPIO_H3600_PCMCIA_CD0, "PCMCIA CD0" }, + { 1, IRQ_GPIO_H3600_PCMCIA_CD1, "PCMCIA CD1" } +}; + +static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + skt->irq = skt->nr ? IRQ_GPIO_H3600_PCMCIA_IRQ1 + : IRQ_GPIO_H3600_PCMCIA_IRQ0; + + + return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); + + /* Disable CF bus: */ + clr_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON); + clr_h3600_egpio(IPAQ_EGPIO_OPT_ON); + set_h3600_egpio(IPAQ_EGPIO_OPT_RESET); +} + +static void +h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) +{ + unsigned long levels = GPLR; + + switch (skt->nr) { + case 0: + state->detect = levels & GPIO_H3600_PCMCIA_CD0 ? 0 : 1; + state->ready = levels & GPIO_H3600_PCMCIA_IRQ0 ? 1 : 0; + state->bvd1 = 0; + state->bvd2 = 0; + state->wrprot = 0; /* Not available on H3600. */ + state->vs_3v = 0; + state->vs_Xv = 0; + break; + + case 1: + state->detect = levels & GPIO_H3600_PCMCIA_CD1 ? 0 : 1; + state->ready = levels & GPIO_H3600_PCMCIA_IRQ1 ? 1 : 0; + state->bvd1 = 0; + state->bvd2 = 0; + state->wrprot = 0; /* Not available on H3600. */ + state->vs_3v = 0; + state->vs_Xv = 0; + break; + } +} + +static int +h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) +{ + if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) { + printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n", + state->Vcc / 10, state->Vcc % 10); + return -1; + } + + if (state->flags & SS_RESET) + set_h3600_egpio(IPAQ_EGPIO_CARD_RESET); + else + clr_h3600_egpio(IPAQ_EGPIO_CARD_RESET); + + /* Silently ignore Vpp, output enable, speaker enable. */ + + return 0; +} + +static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt) +{ + /* Enable CF bus: */ + set_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON); + set_h3600_egpio(IPAQ_EGPIO_OPT_ON); + clr_h3600_egpio(IPAQ_EGPIO_OPT_RESET); + + msleep(10); + + soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); + + /* + * FIXME: This doesn't fit well. We don't have the mechanism in + * the generic PCMCIA layer to deal with the idea of two sockets + * on one bus. We rely on the cs.c behaviour shutting down + * socket 0 then socket 1. + */ + if (skt->nr == 1) { + clr_h3600_egpio(IPAQ_EGPIO_OPT_ON); + clr_h3600_egpio(IPAQ_EGPIO_OPT_NVRAM_ON); + /* hmm, does this suck power? */ + set_h3600_egpio(IPAQ_EGPIO_OPT_RESET); + } +} + +struct pcmcia_low_level h3600_pcmcia_ops = { + .owner = THIS_MODULE, + .hw_init = h3600_pcmcia_hw_init, + .hw_shutdown = h3600_pcmcia_hw_shutdown, + .socket_state = h3600_pcmcia_socket_state, + .configure_socket = h3600_pcmcia_configure_socket, + + .socket_init = h3600_pcmcia_socket_init, + .socket_suspend = h3600_pcmcia_socket_suspend, +}; + +int __init pcmcia_h3600_init(struct device *dev) +{ + int ret = -ENODEV; + + if (machine_is_h3600()) + ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2); + + return ret; +} |