Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pcmcia / pxa2xx_palmld.c

diff --git a/kernel/drivers/pcmcia/pxa2xx_palmld.c b/kernel/drivers/pcmcia/pxa2xx_palmld.c
new file mode 100644 (file)
index 0000000..ed7d4db
--- /dev/null
+++ b/kernel/drivers/pcmcia/pxa2xx_palmld.c
@@ -0,0 +1,114 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_palmld.c
+ *
+ * Driver for Palm LifeDrive PCMCIA
+ *
+ * Copyright (C) 2006 Alex Osborne <ato@meshy.org>
+ * Copyright (C) 2007-2011 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 struct gpio palmld_pcmcia_gpios[] = {
+       { GPIO_NR_PALMLD_PCMCIA_POWER,  GPIOF_INIT_LOW, "PCMCIA Power" },
+       { GPIO_NR_PALMLD_PCMCIA_RESET,  GPIOF_INIT_HIGH,"PCMCIA Reset" },
+};
+
+static int palmld_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+       int ret;
+
+       ret = gpio_request_array(palmld_pcmcia_gpios,
+                               ARRAY_SIZE(palmld_pcmcia_gpios));
+
+       skt->stat[SOC_STAT_RDY].gpio = GPIO_NR_PALMLD_PCMCIA_READY;
+       skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
+
+       return ret;
+}
+
+static void palmld_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+       gpio_free_array(palmld_pcmcia_gpios, ARRAY_SIZE(palmld_pcmcia_gpios));
+}
+
+static void palmld_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                                       struct pcmcia_state *state)
+{
+       state->detect = 1; /* always inserted */
+       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 struct pcmcia_low_level palmld_pcmcia_ops = {
+       .owner                  = THIS_MODULE,
+
+       .first                  = 1,
+       .nr                     = 1,
+
+       .hw_init                = palmld_pcmcia_hw_init,
+       .hw_shutdown            = palmld_pcmcia_hw_shutdown,
+
+       .socket_state           = palmld_pcmcia_socket_state,
+       .configure_socket       = palmld_pcmcia_configure_socket,
+};
+
+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");