113 строки
2.7 KiB
C
113 строки
2.7 KiB
C
/*
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* drivers/pcmcia/sa1100_jornada720.c
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*
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* Jornada720 PCMCIA specific routines
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <mach/hardware.h>
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#include <asm/hardware/sa1111.h>
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#include <asm/mach-types.h>
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#include "sa1111_generic.h"
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#define SOCKET0_POWER GPIO_GPIO0
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#define SOCKET0_3V GPIO_GPIO2
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#define SOCKET1_POWER (GPIO_GPIO1 | GPIO_GPIO3)
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#warning *** Does SOCKET1_3V actually do anything?
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#define SOCKET1_3V GPIO_GPIO3
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static int jornada720_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
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{
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/*
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* What is all this crap for?
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*/
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GRER |= 0x00000002;
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/* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
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sa1111_set_io_dir(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
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sa1111_set_io(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
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sa1111_set_sleep_io(SA1111_DEV(skt->dev), GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
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return sa1111_pcmcia_hw_init(skt);
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}
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static int
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jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
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{
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unsigned int pa_dwr_mask, pa_dwr_set;
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int ret;
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printk("%s(): config socket %d vcc %d vpp %d\n", __func__,
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skt->nr, state->Vcc, state->Vpp);
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switch (skt->nr) {
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case 0:
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pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V;
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switch (state->Vcc) {
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default:
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case 0: pa_dwr_set = 0; break;
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case 33: pa_dwr_set = SOCKET0_POWER | SOCKET0_3V; break;
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case 50: pa_dwr_set = SOCKET0_POWER; break;
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}
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break;
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case 1:
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pa_dwr_mask = SOCKET1_POWER;
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switch (state->Vcc) {
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default:
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case 0: pa_dwr_set = 0; break;
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case 33: pa_dwr_set = SOCKET1_POWER; break;
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case 50: pa_dwr_set = SOCKET1_POWER; break;
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}
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break;
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default:
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return -1;
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}
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if (state->Vpp != state->Vcc && state->Vpp != 0) {
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printk(KERN_ERR "%s(): slot cannot support VPP %u\n",
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__func__, state->Vpp);
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return -1;
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}
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ret = sa1111_pcmcia_configure_socket(skt, state);
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if (ret == 0) {
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unsigned long flags;
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local_irq_save(flags);
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sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, pa_dwr_set);
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local_irq_restore(flags);
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}
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return ret;
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}
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static struct pcmcia_low_level jornada720_pcmcia_ops = {
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.owner = THIS_MODULE,
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.hw_init = jornada720_pcmcia_hw_init,
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.hw_shutdown = sa1111_pcmcia_hw_shutdown,
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.socket_state = sa1111_pcmcia_socket_state,
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.configure_socket = jornada720_pcmcia_configure_socket,
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.socket_init = sa1111_pcmcia_socket_init,
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.socket_suspend = sa1111_pcmcia_socket_suspend,
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};
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int __devinit pcmcia_jornada720_init(struct device *dev)
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{
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int ret = -ENODEV;
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if (machine_is_jornada720())
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ret = sa11xx_drv_pcmcia_probe(dev, &jornada720_pcmcia_ops, 0, 2);
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return ret;
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}
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