pcmcia: add driver for hx4700 (95244306) · Commits · 戴 / test

drivers/pcmcia/Kconfig

+1 −1

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		@@ -217,7 +217,7 @@ config PCMCIA_PXA2XX
		\|\| MACH_ARMCORE \|\| ARCH_PXA_PALM \|\| TRIZEPS_PCMCIA \
		\|\| ARCOM_PCMCIA \|\| ARCH_PXA_ESERIES \|\| MACH_STARGATE2 \
		\|\| MACH_VPAC270 \|\| MACH_BALLOON3 \|\| MACH_COLIBRI \
		\|\| MACH_COLIBRI320)
		\|\| MACH_COLIBRI320 \|\| MACH_H4700)
		select PCMCIA_SA1111 if ARCH_LUBBOCK && SA1111
		select PCMCIA_SOC_COMMON
		help

drivers/pcmcia/Makefile

+1 −0

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		@@ -69,6 +69,7 @@ pxa2xx-obj-$(CONFIG_MACH_VPAC270) += pxa2xx_vpac270.o
		pxa2xx-obj-$(CONFIG_MACH_BALLOON3) += pxa2xx_balloon3.o
		pxa2xx-obj-$(CONFIG_MACH_COLIBRI) += pxa2xx_colibri.o
		pxa2xx-obj-$(CONFIG_MACH_COLIBRI320) += pxa2xx_colibri.o
		pxa2xx-obj-$(CONFIG_MACH_H4700) += pxa2xx_hx4700.o

		obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_base.o $(pxa2xx-obj-y)

drivers/pcmcia/pxa2xx_hx4700.c

0 → 100644

+121 −0

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		/*
		* Copyright (C) 2012 Paul Parsons <lost.distance@yahoo.com>
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License version 2 as
		* published by the Free Software Foundation.
		*/

		#include <linux/module.h>
		#include <linux/platform_device.h>
		#include <linux/err.h>
		#include <linux/gpio.h>
		#include <linux/irq.h>

		#include <asm/mach-types.h>
		#include <mach/hx4700.h>

		#include "soc_common.h"

		static struct gpio gpios[] = {
		{ GPIO114_HX4700_CF_RESET, GPIOF_OUT_INIT_LOW, "CF reset" },
		{ EGPIO4_CF_3V3_ON, GPIOF_OUT_INIT_LOW, "CF 3.3V enable" },
		};

		static int hx4700_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
		{
		int ret;

		ret = gpio_request_array(gpios, ARRAY_SIZE(gpios));
		if (ret)
		goto out;

		/*
		* IRQ type must be set before soc_pcmcia_hw_init() calls request_irq().
		* The asic3 default IRQ type is level trigger low level detect, exactly
		* the the signal present on GPIOD4_CF_nCD when a CF card is inserted.
		* If the IRQ type is not changed, the asic3 interrupt handler will loop
		* repeatedly because it is unable to clear the level trigger interrupt.
		*/
		irq_set_irq_type(gpio_to_irq(GPIOD4_CF_nCD), IRQ_TYPE_EDGE_BOTH);

		skt->stat[SOC_STAT_CD].gpio = GPIOD4_CF_nCD;
		skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
		skt->stat[SOC_STAT_RDY].gpio = GPIO60_HX4700_CF_RNB;
		skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";

		out:
		return ret;
		}

		static void hx4700_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
		{
		gpio_free_array(gpios, ARRAY_SIZE(gpios));
		}

		static void hx4700_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
		struct pcmcia_state *state)
		{
		state->vs_3v = 1;
		state->vs_Xv = 0;
		}

		static int hx4700_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
		const socket_state_t *state)
		{
		switch (state->Vcc) {
		case 0:
		gpio_set_value(EGPIO4_CF_3V3_ON, 0);
		break;
		case 33:
		gpio_set_value(EGPIO4_CF_3V3_ON, 1);
		break;
		default:
		printk(KERN_ERR "pcmcia: Unsupported Vcc: %d\n", state->Vcc);
		return -EINVAL;
		}

		gpio_set_value(GPIO114_HX4700_CF_RESET, (state->flags & SS_RESET) != 0);

		return 0;
		}

		static struct pcmcia_low_level hx4700_pcmcia_ops = {
		.owner = THIS_MODULE,
		.nr = 1,
		.hw_init = hx4700_pcmcia_hw_init,
		.hw_shutdown = hx4700_pcmcia_hw_shutdown,
		.socket_state = hx4700_pcmcia_socket_state,
		.configure_socket = hx4700_pcmcia_configure_socket,
		};

		static struct platform_device *hx4700_pcmcia_device;

		static int __init hx4700_pcmcia_init(void)
		{
		struct platform_device *pdev;

		if (!machine_is_h4700())
		return -ENODEV;

		pdev = platform_device_register_data(NULL, "pxa2xx-pcmcia", -1,
		&hx4700_pcmcia_ops, sizeof(hx4700_pcmcia_ops));
		if (IS_ERR(pdev))
		return PTR_ERR(pdev);

		hx4700_pcmcia_device = pdev;

		return 0;
		}

		static void __exit hx4700_pcmcia_exit(void)
		{
		platform_device_unregister(hx4700_pcmcia_device);
		}

		module_init(hx4700_pcmcia_init);
		module_exit(hx4700_pcmcia_exit);

		MODULE_AUTHOR("Paul Parsons <lost.distance@yahoo.com>");
		MODULE_DESCRIPTION("HP iPAQ hx4700 PCMCIA driver");
		MODULE_LICENSE("GPL");

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