zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/drivers/media/radio/radio-aztech.c b/ap/os/linux/linux-3.4.x/drivers/media/radio/radio-aztech.c
new file mode 100644
index 0000000..177bcbd
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/media/radio/radio-aztech.c
@@ -0,0 +1,186 @@
+/*
+ * radio-aztech.c - Aztech radio card driver
+ *
+ * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@xs4all.nl>
+ * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
+ * Adapted to support the Video for Linux API by
+ * Russell Kroll <rkroll@exploits.org>. Based on original tuner code by:
+ *
+ * Quay Ly
+ * Donald Song
+ * Jason Lewis (jlewis@twilight.vtc.vsc.edu)
+ * Scott McGrath (smcgrath@twilight.vtc.vsc.edu)
+ * William McGrath (wmcgrath@twilight.vtc.vsc.edu)
+ *
+ * Fully tested with the Keene USB FM Transmitter 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/io.h> /* outb, outb_p */
+#include <linux/slab.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include "radio-isa.h"
+
+MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
+MODULE_DESCRIPTION("A driver for the Aztech radio card.");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("1.0.0");
+
+/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
+#ifndef CONFIG_RADIO_AZTECH_PORT
+#define CONFIG_RADIO_AZTECH_PORT -1
+#endif
+
+#define AZTECH_MAX 2
+
+static int io[AZTECH_MAX] = { [0] = CONFIG_RADIO_AZTECH_PORT,
+ [1 ... (AZTECH_MAX - 1)] = -1 };
+static int radio_nr[AZTECH_MAX] = { [0 ... (AZTECH_MAX - 1)] = -1 };
+static const int radio_wait_time = 1000;
+
+module_param_array(io, int, NULL, 0444);
+MODULE_PARM_DESC(io, "I/O addresses of the Aztech card (0x350 or 0x358)");
+module_param_array(radio_nr, int, NULL, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio device numbers");
+
+struct aztech {
+ struct radio_isa_card isa;
+ int curvol;
+};
+
+static void send_0_byte(struct aztech *az)
+{
+ udelay(radio_wait_time);
+ outb_p(2 + az->curvol, az->isa.io);
+ outb_p(64 + 2 + az->curvol, az->isa.io);
+}
+
+static void send_1_byte(struct aztech *az)
+{
+ udelay(radio_wait_time);
+ outb_p(128 + 2 + az->curvol, az->isa.io);
+ outb_p(128 + 64 + 2 + az->curvol, az->isa.io);
+}
+
+static struct radio_isa_card *aztech_alloc(void)
+{
+ struct aztech *az = kzalloc(sizeof(*az), GFP_KERNEL);
+
+ return az ? &az->isa : NULL;
+}
+
+static int aztech_s_frequency(struct radio_isa_card *isa, u32 freq)
+{
+ struct aztech *az = container_of(isa, struct aztech, isa);
+ int i;
+
+ freq += 171200; /* Add 10.7 MHz IF */
+ freq /= 800; /* Convert to 50 kHz units */
+
+ send_0_byte(az); /* 0: LSB of frequency */
+
+ for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
+ if (freq & (1 << i))
+ send_1_byte(az);
+ else
+ send_0_byte(az);
+
+ send_0_byte(az); /* 14: test bit - always 0 */
+ send_0_byte(az); /* 15: test bit - always 0 */
+ send_0_byte(az); /* 16: band data 0 - always 0 */
+ if (isa->stereo) /* 17: stereo (1 to enable) */
+ send_1_byte(az);
+ else
+ send_0_byte(az);
+
+ send_1_byte(az); /* 18: band data 1 - unknown */
+ send_0_byte(az); /* 19: time base - always 0 */
+ send_0_byte(az); /* 20: spacing (0 = 25 kHz) */
+ send_1_byte(az); /* 21: spacing (1 = 25 kHz) */
+ send_0_byte(az); /* 22: spacing (0 = 25 kHz) */
+ send_1_byte(az); /* 23: AM/FM (FM = 1, always) */
+
+ /* latch frequency */
+
+ udelay(radio_wait_time);
+ outb_p(128 + 64 + az->curvol, az->isa.io);
+
+ return 0;
+}
+
+/* thanks to Michael Dwyer for giving me a dose of clues in
+ * the signal strength department..
+ *
+ * This card has a stereo bit - bit 0 set = mono, not set = stereo
+ */
+static u32 aztech_g_rxsubchans(struct radio_isa_card *isa)
+{
+ if (inb(isa->io) & 1)
+ return V4L2_TUNER_SUB_MONO;
+ return V4L2_TUNER_SUB_STEREO;
+}
+
+static int aztech_s_stereo(struct radio_isa_card *isa, bool stereo)
+{
+ return aztech_s_frequency(isa, isa->freq);
+}
+
+static int aztech_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
+{
+ struct aztech *az = container_of(isa, struct aztech, isa);
+
+ if (mute)
+ vol = 0;
+ az->curvol = (vol & 1) + ((vol & 2) << 1);
+ outb(az->curvol, isa->io);
+ return 0;
+}
+
+static const struct radio_isa_ops aztech_ops = {
+ .alloc = aztech_alloc,
+ .s_mute_volume = aztech_s_mute_volume,
+ .s_frequency = aztech_s_frequency,
+ .s_stereo = aztech_s_stereo,
+ .g_rxsubchans = aztech_g_rxsubchans,
+};
+
+static const int aztech_ioports[] = { 0x350, 0x358 };
+
+static struct radio_isa_driver aztech_driver = {
+ .driver = {
+ .match = radio_isa_match,
+ .probe = radio_isa_probe,
+ .remove = radio_isa_remove,
+ .driver = {
+ .name = "radio-aztech",
+ },
+ },
+ .io_params = io,
+ .radio_nr_params = radio_nr,
+ .io_ports = aztech_ioports,
+ .num_of_io_ports = ARRAY_SIZE(aztech_ioports),
+ .region_size = 2,
+ .card = "Aztech Radio",
+ .ops = &aztech_ops,
+ .has_stereo = true,
+ .max_volume = 3,
+};
+
+static int __init aztech_init(void)
+{
+ return isa_register_driver(&aztech_driver.driver, AZTECH_MAX);
+}
+
+static void __exit aztech_exit(void)
+{
+ isa_unregister_driver(&aztech_driver.driver);
+}
+
+module_init(aztech_init);
+module_exit(aztech_exit);