Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pcmcia / pxa2xx_vpac270.c

diff --git a/kernel/drivers/pcmcia/pxa2xx_vpac270.c b/kernel/drivers/pcmcia/pxa2xx_vpac270.c
new file mode 100644 (file)
index 0000000..a47dcd2
--- /dev/null
+++ b/kernel/drivers/pcmcia/pxa2xx_vpac270.c
@@ -0,0 +1,142 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_vpac270.c
+ *
+ * Driver for Voipac PXA270 PCMCIA and CF sockets
+ *
+ * Copyright (C) 2010-2011 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/gpio.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-types.h>
+
+#include <asm/gpio.h>
+#include <mach/vpac270.h>
+
+#include "soc_common.h"
+
+static struct gpio vpac270_pcmcia_gpios[] = {
+       { GPIO107_VPAC270_PCMCIA_PPEN,  GPIOF_INIT_LOW, "PCMCIA PPEN" },
+       { GPIO11_VPAC270_PCMCIA_RESET,  GPIOF_INIT_LOW, "PCMCIA Reset" },
+};
+
+static struct gpio vpac270_cf_gpios[] = {
+       { GPIO16_VPAC270_CF_RESET,      GPIOF_INIT_LOW, "CF Reset" },
+};
+
+static int vpac270_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+       int ret;
+
+       if (skt->nr == 0) {
+               ret = gpio_request_array(vpac270_pcmcia_gpios,
+                               ARRAY_SIZE(vpac270_pcmcia_gpios));
+
+               skt->stat[SOC_STAT_CD].gpio = GPIO84_VPAC270_PCMCIA_CD;
+               skt->stat[SOC_STAT_CD].name = "PCMCIA CD";
+               skt->stat[SOC_STAT_RDY].gpio = GPIO35_VPAC270_PCMCIA_RDY;
+               skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready";
+       } else {
+               ret = gpio_request_array(vpac270_cf_gpios,
+                               ARRAY_SIZE(vpac270_cf_gpios));
+
+               skt->stat[SOC_STAT_CD].gpio = GPIO17_VPAC270_CF_CD;
+               skt->stat[SOC_STAT_CD].name = "CF CD";
+               skt->stat[SOC_STAT_RDY].gpio = GPIO12_VPAC270_CF_RDY;
+               skt->stat[SOC_STAT_RDY].name = "CF Ready";
+       }
+
+       return ret;
+}
+
+static void vpac270_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+       if (skt->nr == 0)
+               gpio_free_array(vpac270_pcmcia_gpios,
+                                       ARRAY_SIZE(vpac270_pcmcia_gpios));
+       else
+               gpio_free_array(vpac270_cf_gpios,
+                                       ARRAY_SIZE(vpac270_cf_gpios));
+}
+
+static void vpac270_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                                       struct pcmcia_state *state)
+{
+       state->vs_3v  = 1;
+       state->vs_Xv  = 0;
+}
+
+static int
+vpac270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+                               const socket_state_t *state)
+{
+       if (skt->nr == 0) {
+               gpio_set_value(GPIO11_VPAC270_PCMCIA_RESET,
+                       (state->flags & SS_RESET));
+               gpio_set_value(GPIO107_VPAC270_PCMCIA_PPEN,
+                       !(state->Vcc == 33 || state->Vcc == 50));
+       } else {
+               gpio_set_value(GPIO16_VPAC270_CF_RESET,
+                       (state->flags & SS_RESET));
+       }
+
+       return 0;
+}
+
+static struct pcmcia_low_level vpac270_pcmcia_ops = {
+       .owner                  = THIS_MODULE,
+
+       .first                  = 0,
+       .nr                     = 2,
+
+       .hw_init                = vpac270_pcmcia_hw_init,
+       .hw_shutdown            = vpac270_pcmcia_hw_shutdown,
+
+       .socket_state           = vpac270_pcmcia_socket_state,
+       .configure_socket       = vpac270_pcmcia_configure_socket,
+};
+
+static struct platform_device *vpac270_pcmcia_device;
+
+static int __init vpac270_pcmcia_init(void)
+{
+       int ret;
+
+       if (!machine_is_vpac270())
+               return -ENODEV;
+
+       vpac270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+       if (!vpac270_pcmcia_device)
+               return -ENOMEM;
+
+       ret = platform_device_add_data(vpac270_pcmcia_device,
+               &vpac270_pcmcia_ops, sizeof(vpac270_pcmcia_ops));
+
+       if (!ret)
+               ret = platform_device_add(vpac270_pcmcia_device);
+
+       if (ret)
+               platform_device_put(vpac270_pcmcia_device);
+
+       return ret;
+}
+
+static void __exit vpac270_pcmcia_exit(void)
+{
+       platform_device_unregister(vpac270_pcmcia_device);
+}
+
+module_init(vpac270_pcmcia_init);
+module_exit(vpac270_pcmcia_exit);
+
+MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
+MODULE_DESCRIPTION("PCMCIA support for Voipac PXA270");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");
+MODULE_LICENSE("GPL");