Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pcmcia / pxa2xx_e740.c

diff --git a/kernel/drivers/pcmcia/pxa2xx_e740.c b/kernel/drivers/pcmcia/pxa2xx_e740.c
new file mode 100644 (file)
index 0000000..8751a32
--- /dev/null
+++ b/kernel/drivers/pcmcia/pxa2xx_e740.c
@@ -0,0 +1,130 @@
+/*
+ * Toshiba e740 PCMCIA specific routines.
+ *
+ * (c) 2004 Ian Molton <spyro@f2s.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/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
+#include <mach/eseries-gpio.h>
+
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+
+#include "soc_common.h"
+
+static int e740_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+       if (skt->nr == 0) {
+               skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD0;
+               skt->stat[SOC_STAT_CD].name = "CF card detect";
+               skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY0;
+               skt->stat[SOC_STAT_RDY].name = "CF ready";
+       } else {
+               skt->stat[SOC_STAT_CD].gpio = GPIO_E740_PCMCIA_CD1;
+               skt->stat[SOC_STAT_CD].name = "Wifi switch";
+               skt->stat[SOC_STAT_RDY].gpio = GPIO_E740_PCMCIA_RDY1;
+               skt->stat[SOC_STAT_RDY].name = "Wifi ready";
+       }
+
+       return 0;
+}
+
+static void e740_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                                       struct pcmcia_state *state)
+{
+       state->vs_3v  = 1;
+       state->vs_Xv  = 0;
+}
+
+static int e740_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+                                       const socket_state_t *state)
+{
+       if (state->flags & SS_RESET) {
+               if (skt->nr == 0)
+                       gpio_set_value(GPIO_E740_PCMCIA_RST0, 1);
+               else
+                       gpio_set_value(GPIO_E740_PCMCIA_RST1, 1);
+       } else {
+               if (skt->nr == 0)
+                       gpio_set_value(GPIO_E740_PCMCIA_RST0, 0);
+               else
+                       gpio_set_value(GPIO_E740_PCMCIA_RST1, 0);
+       }
+
+       switch (state->Vcc) {
+       case 0: /* Socket off */
+               if (skt->nr == 0)
+                       gpio_set_value(GPIO_E740_PCMCIA_PWR0, 0);
+               else
+                       gpio_set_value(GPIO_E740_PCMCIA_PWR1, 1);
+               break;
+       case 50:
+       case 33: /* socket on */
+               if (skt->nr == 0)
+                       gpio_set_value(GPIO_E740_PCMCIA_PWR0, 1);
+               else
+                       gpio_set_value(GPIO_E740_PCMCIA_PWR1, 0);
+               break;
+       default:
+               printk(KERN_ERR "e740_cs: Unsupported Vcc: %d\n", state->Vcc);
+       }
+
+       return 0;
+}
+
+static struct pcmcia_low_level e740_pcmcia_ops = {
+       .owner            = THIS_MODULE,
+       .hw_init          = e740_pcmcia_hw_init,
+       .socket_state     = e740_pcmcia_socket_state,
+       .configure_socket = e740_pcmcia_configure_socket,
+       .nr               = 2,
+};
+
+static struct platform_device *e740_pcmcia_device;
+
+static int __init e740_pcmcia_init(void)
+{
+       int ret;
+
+       if (!machine_is_e740())
+               return -ENODEV;
+
+       e740_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+       if (!e740_pcmcia_device)
+               return -ENOMEM;
+
+       ret = platform_device_add_data(e740_pcmcia_device, &e740_pcmcia_ops,
+                                       sizeof(e740_pcmcia_ops));
+
+       if (!ret)
+               ret = platform_device_add(e740_pcmcia_device);
+
+       if (ret)
+               platform_device_put(e740_pcmcia_device);
+
+       return ret;
+}
+
+static void __exit e740_pcmcia_exit(void)
+{
+       platform_device_unregister(e740_pcmcia_device);
+}
+
+module_init(e740_pcmcia_init);
+module_exit(e740_pcmcia_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");
+MODULE_DESCRIPTION("e740 PCMCIA platform support");