Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pcmcia / pxa2xx_viper.c

diff --git a/kernel/drivers/pcmcia/pxa2xx_viper.c b/kernel/drivers/pcmcia/pxa2xx_viper.c
new file mode 100644 (file)
index 0000000..7ac6647
--- /dev/null
+++ b/kernel/drivers/pcmcia/pxa2xx_viper.c
@@ -0,0 +1,182 @@
+/*
+ * Viper/Zeus PCMCIA support
+ *   Copyright 2004 Arcom Control Systems
+ *
+ * Maintained by Marc Zyngier <maz@misterjones.org>
+ *
+ * Based on:
+ *   iPAQ h2200 PCMCIA support
+ *   Copyright 2004 Koen Kooi <koen@vestingbar.nl>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#include <pcmcia/ss.h>
+
+#include <asm/irq.h>
+
+#include <linux/platform_data/pcmcia-pxa2xx_viper.h>
+
+#include "soc_common.h"
+#include "pxa2xx_base.h"
+
+static struct platform_device *arcom_pcmcia_dev;
+
+static inline struct arcom_pcmcia_pdata *viper_get_pdata(void)
+{
+       return arcom_pcmcia_dev->dev.platform_data;
+}
+
+static int viper_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+       struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
+       unsigned long flags;
+
+       skt->stat[SOC_STAT_CD].gpio = pdata->cd_gpio;
+       skt->stat[SOC_STAT_CD].name = "PCMCIA_CD";
+       skt->stat[SOC_STAT_RDY].gpio = pdata->rdy_gpio;
+       skt->stat[SOC_STAT_RDY].name = "CF ready";
+
+       if (gpio_request(pdata->pwr_gpio, "CF power"))
+               goto err_request_pwr;
+
+       local_irq_save(flags);
+
+       if (gpio_direction_output(pdata->pwr_gpio, 0)) {
+               local_irq_restore(flags);
+               goto err_dir;
+       }
+
+       local_irq_restore(flags);
+
+       return 0;
+
+err_dir:
+       gpio_free(pdata->pwr_gpio);
+err_request_pwr:
+       dev_err(&arcom_pcmcia_dev->dev, "Failed to setup PCMCIA GPIOs\n");
+       return -1;
+}
+
+/*
+ * Release all resources.
+ */
+static void viper_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+       struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
+
+       gpio_free(pdata->pwr_gpio);
+}
+
+static void viper_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                                     struct pcmcia_state *state)
+{
+       state->vs_3v  = 1; /* Can only apply 3.3V */
+       state->vs_Xv  = 0;
+}
+
+static int viper_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+                                        const socket_state_t *state)
+{
+       struct arcom_pcmcia_pdata *pdata = viper_get_pdata();
+
+       /* Silently ignore Vpp, output enable, speaker enable. */
+       pdata->reset(state->flags & SS_RESET);
+
+       /* Apply socket voltage */
+       switch (state->Vcc) {
+       case 0:
+               gpio_set_value(pdata->pwr_gpio, 0);
+               break;
+       case 33:
+               gpio_set_value(pdata->pwr_gpio, 1);
+               break;
+       default:
+               dev_err(&arcom_pcmcia_dev->dev, "Unsupported Vcc:%d\n", state->Vcc);
+               return -1;
+       }
+
+       return 0;
+}
+
+static struct pcmcia_low_level viper_pcmcia_ops = {
+       .owner                  = THIS_MODULE,
+       .hw_init                = viper_pcmcia_hw_init,
+       .hw_shutdown            = viper_pcmcia_hw_shutdown,
+       .socket_state           = viper_pcmcia_socket_state,
+       .configure_socket       = viper_pcmcia_configure_socket,
+       .nr                     = 1,
+};
+
+static struct platform_device *viper_pcmcia_device;
+
+static int viper_pcmcia_probe(struct platform_device *pdev)
+{
+       int ret;
+
+       /* I can't imagine more than one device, but you never know... */
+       if (arcom_pcmcia_dev)
+               return -EEXIST;
+
+       if (!pdev->dev.platform_data)
+               return -EINVAL;
+
+       viper_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+       if (!viper_pcmcia_device)
+               return -ENOMEM;
+
+       arcom_pcmcia_dev = pdev;
+
+       viper_pcmcia_device->dev.parent = &pdev->dev;
+
+       ret = platform_device_add_data(viper_pcmcia_device,
+                                      &viper_pcmcia_ops,
+                                      sizeof(viper_pcmcia_ops));
+
+       if (!ret)
+               ret = platform_device_add(viper_pcmcia_device);
+
+       if (ret) {
+               platform_device_put(viper_pcmcia_device);
+               arcom_pcmcia_dev = NULL;
+       }
+
+       return ret;
+}
+
+static int viper_pcmcia_remove(struct platform_device *pdev)
+{
+       platform_device_unregister(viper_pcmcia_device);
+       arcom_pcmcia_dev = NULL;
+       return 0;
+}
+
+static struct platform_device_id viper_pcmcia_id_table[] = {
+       { .name = "viper-pcmcia", },
+       { .name = "zeus-pcmcia",  },
+       { },
+};
+
+static struct platform_driver viper_pcmcia_driver = {
+       .probe          = viper_pcmcia_probe,
+       .remove         = viper_pcmcia_remove,
+       .driver         = {
+               .name   = "arcom-pcmcia",
+       },
+       .id_table       = viper_pcmcia_id_table,
+};
+
+module_platform_driver(viper_pcmcia_driver);
+
+MODULE_DEVICE_TABLE(platform, viper_pcmcia_id_table);
+MODULE_LICENSE("GPL");