[ARM] 5199/1: PalmLD: PCMCIA driver

PCMCIA driver for Palm LifeDrive

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 151 insertions, 0 deletions

diff --git a/drivers/pcmcia/pxa2xx_palmld.c b/drivers/pcmcia/pxa2xx_palmld.c
new file mode 100644
index 000000000000..1736c67e547e
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_palmld.c
@@ -0,0 +1,151 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_palmld.c
+ *
+ * Driver for Palm LifeDrive PCMCIA
+ *
+ * Copyright (C) 2006 Alex Osborne <ato@meshy.org>
+ * Copyright (C) 2007-2008 Marek Vasut <marek.vasut@gmail.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/gpio.h>
+
+#include <asm/mach-types.h>
+#include <mach/palmld.h>
+#include "soc_common.h"
+
+static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+	int ret;
+
+	ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_POWER, "PCMCIA PWR");
+	if (ret)
+		goto err1;
+	ret = gpio_direction_output(GPIO_NR_PALMLD_PCMCIA_POWER, 0);
+	if (ret)
+		goto err2;
+
+	ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_RESET, "PCMCIA RST");
+	if (ret)
+		goto err2;
+	ret = gpio_direction_output(GPIO_NR_PALMLD_PCMCIA_RESET, 1);
+	if (ret)
+		goto err3;
+
+	ret = gpio_request(GPIO_NR_PALMLD_PCMCIA_READY, "PCMCIA RDY");
+	if (ret)
+		goto err3;
+	ret = gpio_direction_input(GPIO_NR_PALMLD_PCMCIA_READY);
+	if (ret)
+		goto err4;
+
+	skt->irq = IRQ_GPIO(GPIO_NR_PALMLD_PCMCIA_READY);
+	return 0;
+
+err4:
+	gpio_free(GPIO_NR_PALMLD_PCMCIA_READY);
+err3:
+	gpio_free(GPIO_NR_PALMLD_PCMCIA_RESET);
+err2:
+	gpio_free(GPIO_NR_PALMLD_PCMCIA_POWER);
+err1:
+	return ret;
+}
+
+static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+	gpio_free(GPIO_NR_PALMLD_PCMCIA_READY);
+	gpio_free(GPIO_NR_PALMLD_PCMCIA_RESET);
+	gpio_free(GPIO_NR_PALMLD_PCMCIA_POWER);
+}
+
+static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+					struct pcmcia_state *state)
+{
+	state->detect = 1; /* always inserted */
+	state->ready  = !!gpio_get_value(GPIO_NR_PALMLD_PCMCIA_READY);
+	state->bvd1   = 1;
+	state->bvd2   = 1;
+	state->wrprot = 0;
+	state->vs_3v  = 1;
+	state->vs_Xv  = 0;
+}
+
+static int palmld_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+					const socket_state_t *state)
+{
+	gpio_set_value(GPIO_NR_PALMLD_PCMCIA_POWER, 1);
+	gpio_set_value(GPIO_NR_PALMLD_PCMCIA_RESET,
+			!!(state->flags & SS_RESET));
+
+	return 0;
+}
+
+static void palmld_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+}
+
+static void palmld_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+}
+
+static struct pcmcia_low_level palmld_pcmcia_ops = {
+	.owner			= THIS_MODULE,
+
+	.first			= 0,
+	.nr			= 2,
+
+	.hw_init		= palmld_pcmcia_hw_init,
+	.hw_shutdown		= palmld_pcmcia_hw_shutdown,
+
+	.socket_state		= palmld_pcmcia_socket_state,
+	.configure_socket	= palmld_pcmcia_configure_socket,
+
+	.socket_init		= palmld_pcmcia_socket_init,
+	.socket_suspend		= palmld_pcmcia_socket_suspend,
+};
+
+static struct platform_device *palmld_pcmcia_device;
+
+static int __init palmld_pcmcia_init(void)
+{
+	int ret;
+
+	if (!machine_is_palmld())
+		return -ENODEV;
+
+	palmld_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+	if (!palmld_pcmcia_device)
+		return -ENOMEM;
+
+	ret = platform_device_add_data(palmld_pcmcia_device, &palmld_pcmcia_ops,
+					sizeof(palmld_pcmcia_ops));
+
+	if (!ret)
+		ret = platform_device_add(palmld_pcmcia_device);
+
+	if (ret)
+		platform_device_put(palmld_pcmcia_device);
+
+	return ret;
+}
+
+static void __exit palmld_pcmcia_exit(void)
+{
+	platform_device_unregister(palmld_pcmcia_device);
+}
+
+module_init(palmld_pcmcia_init);
+module_exit(palmld_pcmcia_exit);
+
+MODULE_AUTHOR("Alex Osborne <ato@meshy.org>,"
+	    " Marek Vasut <marek.vasut@gmail.com>");
+MODULE_DESCRIPTION("PCMCIA support for Palm LifeDrive");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");
+MODULE_LICENSE("GPL");