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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_simpad.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_simpad.c')
-rw-r--r-- | drivers/pcmcia/sa1100_simpad.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/drivers/pcmcia/sa1100_simpad.c b/drivers/pcmcia/sa1100_simpad.c new file mode 100644 index 0000000..c2ecf11 --- /dev/null +++ b/drivers/pcmcia/sa1100_simpad.c @@ -0,0 +1,135 @@ +/* + * drivers/pcmcia/sa1100_simpad.c + * + * PCMCIA implementation routines for simpad + * + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/device.h> +#include <linux/init.h> + +#include <asm/hardware.h> +#include <asm/mach-types.h> +#include <asm/irq.h> +#include <asm/arch/simpad.h> +#include "sa1100_generic.h" + +extern long get_cs3_shadow(void); +extern void set_cs3_bit(int value); +extern void clear_cs3_bit(int value); + +static struct pcmcia_irqs irqs[] = { + { 1, IRQ_GPIO_CF_CD, "CF_CD" }, +}; + +static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + + clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); + + skt->irq = IRQ_GPIO_CF_IRQ; + + return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); + + /* Disable CF bus: */ + //set_cs3_bit(PCMCIA_BUFF_DIS); + clear_cs3_bit(PCMCIA_RESET); +} + +static void +simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt, + struct pcmcia_state *state) +{ + unsigned long levels = GPLR; + long cs3reg = get_cs3_shadow(); + + state->detect=((levels & GPIO_CF_CD)==0)?1:0; + state->ready=(levels & GPIO_CF_IRQ)?1:0; + state->bvd1=1; /* Not available on Simpad. */ + state->bvd2=1; /* Not available on Simpad. */ + state->wrprot=0; /* Not available on Simpad. */ + + if((cs3reg & 0x0c) == 0x0c) { + state->vs_3v=0; + state->vs_Xv=0; + } else { + state->vs_3v=1; + state->vs_Xv=0; + } +} + +static int +simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, + const socket_state_t *state) +{ + unsigned long flags; + + local_irq_save(flags); + + /* Murphy: see table of MIC2562a-1 */ + switch (state->Vcc) { + case 0: + clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); + break; + + case 33: + clear_cs3_bit(VCC_3V_EN|EN1); + set_cs3_bit(VCC_5V_EN|EN0); + break; + + case 50: + clear_cs3_bit(VCC_5V_EN|EN1); + set_cs3_bit(VCC_3V_EN|EN0); + break; + + default: + printk(KERN_ERR "%s(): unrecognized Vcc %u\n", + __FUNCTION__, state->Vcc); + clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); + local_irq_restore(flags); + return -1; + } + + + local_irq_restore(flags); + + return 0; +} + +static void simpad_pcmcia_socket_init(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); + set_cs3_bit(PCMCIA_RESET); +} + +static struct pcmcia_low_level simpad_pcmcia_ops = { + .owner = THIS_MODULE, + .hw_init = simpad_pcmcia_hw_init, + .hw_shutdown = simpad_pcmcia_hw_shutdown, + .socket_state = simpad_pcmcia_socket_state, + .configure_socket = simpad_pcmcia_configure_socket, + .socket_init = simpad_pcmcia_socket_init, + .socket_suspend = simpad_pcmcia_socket_suspend, +}; + +int __init pcmcia_simpad_init(struct device *dev) +{ + int ret = -ENODEV; + + if (machine_is_simpad()) + ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1); + + return ret; +} |