mirror of
https://github.com/edk2-porting/linux-next.git
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a1d0500261
Add a helper to get the voltage state of CF sockets, where the voltage sense pins are not wired up. Switch assabet and cerf to use this helper. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
86 lines
1.8 KiB
C
86 lines
1.8 KiB
C
/*
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* drivers/pcmcia/sa1100_cerf.c
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*
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* PCMCIA implementation routines for CerfBoard
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* Based off the Assabet.
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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/init.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <mach/hardware.h>
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#include <asm/mach-types.h>
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#include <asm/irq.h>
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#include <mach/cerf.h>
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#include "sa1100_generic.h"
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#define CERF_SOCKET 1
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static int cerf_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
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{
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int ret;
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ret = gpio_request_one(CERF_GPIO_CF_RESET, GPIOF_OUT_INIT_LOW, "CF_RESET");
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if (ret)
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return ret;
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skt->stat[SOC_STAT_CD].gpio = CERF_GPIO_CF_CD;
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skt->stat[SOC_STAT_CD].name = "CF_CD";
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skt->stat[SOC_STAT_BVD1].gpio = CERF_GPIO_CF_BVD1;
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skt->stat[SOC_STAT_BVD1].name = "CF_BVD1";
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skt->stat[SOC_STAT_BVD2].gpio = CERF_GPIO_CF_BVD2;
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skt->stat[SOC_STAT_BVD2].name = "CF_BVD2";
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skt->stat[SOC_STAT_RDY].gpio = CERF_GPIO_CF_IRQ;
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skt->stat[SOC_STAT_RDY].name = "CF_IRQ";
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return 0;
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}
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static void cerf_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
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{
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gpio_free(CERF_GPIO_CF_RESET);
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}
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static int
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cerf_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
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const socket_state_t *state)
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{
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switch (state->Vcc) {
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case 0:
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case 50:
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case 33:
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break;
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default:
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printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
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__func__, state->Vcc);
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return -1;
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}
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gpio_set_value(CERF_GPIO_CF_RESET, !!(state->flags & SS_RESET));
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return 0;
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}
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static struct pcmcia_low_level cerf_pcmcia_ops = {
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.owner = THIS_MODULE,
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.hw_init = cerf_pcmcia_hw_init,
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.hw_shutdown = cerf_pcmcia_hw_shutdown,
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.socket_state = soc_common_cf_socket_state,
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.configure_socket = cerf_pcmcia_configure_socket,
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};
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int pcmcia_cerf_init(struct device *dev)
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{
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int ret = -ENODEV;
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if (machine_is_cerf())
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ret = sa11xx_drv_pcmcia_probe(dev, &cerf_pcmcia_ops, CERF_SOCKET, 1);
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return ret;
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}
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