Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / media / radio / radio-rtrack2.c

diff --git a/kernel/drivers/media/radio/radio-rtrack2.c b/kernel/drivers/media/radio/radio-rtrack2.c
new file mode 100644 (file)
index 0000000..09cfbc3
--- /dev/null
+++ b/kernel/drivers/media/radio/radio-rtrack2.c
@@ -0,0 +1,141 @@
+/*
+ * RadioTrack II driver
+ * Copyright 1998 Ben Pfaff
+ *
+ * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood
+ * Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk>
+ * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
+ *
+ * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com>
+ * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
+ *
+ * Fully tested with actual hardware and the v4l2-compliance tool.
+ */
+
+#include <linux/module.h>      /* Modules                      */
+#include <linux/init.h>                /* Initdata                     */
+#include <linux/ioport.h>      /* request_region               */
+#include <linux/delay.h>       /* udelay                       */
+#include <linux/videodev2.h>   /* kernel radio structs         */
+#include <linux/mutex.h>
+#include <linux/io.h>          /* outb, outb_p                 */
+#include <linux/slab.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include "radio-isa.h"
+
+MODULE_AUTHOR("Ben Pfaff");
+MODULE_DESCRIPTION("A driver for the RadioTrack II radio card.");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.1.99");
+
+#ifndef CONFIG_RADIO_RTRACK2_PORT
+#define CONFIG_RADIO_RTRACK2_PORT -1
+#endif
+
+#define RTRACK2_MAX 2
+
+static int io[RTRACK2_MAX] = { [0] = CONFIG_RADIO_RTRACK2_PORT,
+                             [1 ... (RTRACK2_MAX - 1)] = -1 };
+static int radio_nr[RTRACK2_MAX] = { [0 ... (RTRACK2_MAX - 1)] = -1 };
+
+module_param_array(io, int, NULL, 0444);
+MODULE_PARM_DESC(io, "I/O addresses of the RadioTrack card (0x20f or 0x30f)");
+module_param_array(radio_nr, int, NULL, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio device numbers");
+
+static struct radio_isa_card *rtrack2_alloc(void)
+{
+       return kzalloc(sizeof(struct radio_isa_card), GFP_KERNEL);
+}
+
+static void zero(struct radio_isa_card *isa)
+{
+       outb_p(1, isa->io);
+       outb_p(3, isa->io);
+       outb_p(1, isa->io);
+}
+
+static void one(struct radio_isa_card *isa)
+{
+       outb_p(5, isa->io);
+       outb_p(7, isa->io);
+       outb_p(5, isa->io);
+}
+
+static int rtrack2_s_frequency(struct radio_isa_card *isa, u32 freq)
+{
+       int i;
+
+       freq = freq / 200 + 856;
+
+       outb_p(0xc8, isa->io);
+       outb_p(0xc9, isa->io);
+       outb_p(0xc9, isa->io);
+
+       for (i = 0; i < 10; i++)
+               zero(isa);
+
+       for (i = 14; i >= 0; i--)
+               if (freq & (1 << i))
+                       one(isa);
+               else
+                       zero(isa);
+
+       outb_p(0xc8, isa->io);
+       outb_p(v4l2_ctrl_g_ctrl(isa->mute), isa->io);
+       return 0;
+}
+
+static u32 rtrack2_g_signal(struct radio_isa_card *isa)
+{
+       /* bit set = no signal present  */
+       return (inb(isa->io) & 2) ? 0 : 0xffff;
+}
+
+static int rtrack2_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
+{
+       outb(mute, isa->io);
+       return 0;
+}
+
+static const struct radio_isa_ops rtrack2_ops = {
+       .alloc = rtrack2_alloc,
+       .s_mute_volume = rtrack2_s_mute_volume,
+       .s_frequency = rtrack2_s_frequency,
+       .g_signal = rtrack2_g_signal,
+};
+
+static const int rtrack2_ioports[] = { 0x20f, 0x30f };
+
+static struct radio_isa_driver rtrack2_driver = {
+       .driver = {
+               .match          = radio_isa_match,
+               .probe          = radio_isa_probe,
+               .remove         = radio_isa_remove,
+               .driver         = {
+                       .name   = "radio-rtrack2",
+               },
+       },
+       .io_params = io,
+       .radio_nr_params = radio_nr,
+       .io_ports = rtrack2_ioports,
+       .num_of_io_ports = ARRAY_SIZE(rtrack2_ioports),
+       .region_size = 4,
+       .card = "AIMSlab RadioTrack II",
+       .ops = &rtrack2_ops,
+       .has_stereo = true,
+};
+
+static int __init rtrack2_init(void)
+{
+       return isa_register_driver(&rtrack2_driver.driver, RTRACK2_MAX);
+}
+
+static void __exit rtrack2_exit(void)
+{
+       isa_unregister_driver(&rtrack2_driver.driver);
+}
+
+module_init(rtrack2_init);
+module_exit(rtrack2_exit);