1 files changed, 201 insertions, 0 deletions

diff --git a/drivers/media/radio/si470x/radio-si470x.h b/drivers/media/radio/si470x/radio-si470x.h
new file mode 100644
index 000000000000..dd71985c4113
--- /dev/null
+++ b/drivers/media/radio/si470x/radio-si470x.h
@@ -0,0 +1,201 @@
+/*
+ *  drivers/media/radio/si470x/radio-si470x.h
+ *
+ *  Driver for radios with Silicon Labs Si470x FM Radio Receivers
+ *
+ *  Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+/* driver definitions */
+#define DRIVER_NAME "radio-si470x"
+
+
+/* kernel includes */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/smp_lock.h>
+#include <linux/input.h>
+#include <linux/version.h>
+#include <linux/videodev2.h>
+#include <linux/mutex.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <media/rds.h>
+#include <asm/unaligned.h>
+
+
+/**************************************************************************
+ * Register Definitions
+ **************************************************************************/
+#define RADIO_REGISTER_SIZE     2       /* 16 register bit width */
+#define RADIO_REGISTER_NUM      16      /* DEVICEID   ... RDSD */
+#define RDS_REGISTER_NUM        6       /* STATUSRSSI ... RDSD */
+
+#define DEVICEID                0       /* Device ID */
+#define DEVICEID_PN             0xf000  /* bits 15..12: Part Number */
+#define DEVICEID_MFGID          0x0fff  /* bits 11..00: Manufacturer ID */
+
+#define CHIPID                  1       /* Chip ID */
+#define CHIPID_REV              0xfc00  /* bits 15..10: Chip Version */
+#define CHIPID_DEV              0x0200  /* bits 09..09: Device */
+#define CHIPID_FIRMWARE         0x01ff  /* bits 08..00: Firmware Version */
+
+#define POWERCFG                2       /* Power Configuration */
+#define POWERCFG_DSMUTE         0x8000  /* bits 15..15: Softmute Disable */
+#define POWERCFG_DMUTE          0x4000  /* bits 14..14: Mute Disable */
+#define POWERCFG_MONO           0x2000  /* bits 13..13: Mono Select */
+#define POWERCFG_RDSM           0x0800  /* bits 11..11: RDS Mode (Si4701 only) */
+#define POWERCFG_SKMODE         0x0400  /* bits 10..10: Seek Mode */
+#define POWERCFG_SEEKUP         0x0200  /* bits 09..09: Seek Direction */
+#define POWERCFG_SEEK           0x0100  /* bits 08..08: Seek */
+#define POWERCFG_DISABLE        0x0040  /* bits 06..06: Powerup Disable */
+#define POWERCFG_ENABLE         0x0001  /* bits 00..00: Powerup Enable */
+
+#define CHANNEL                 3       /* Channel */
+#define CHANNEL_TUNE            0x8000  /* bits 15..15: Tune */
+#define CHANNEL_CHAN            0x03ff  /* bits 09..00: Channel Select */
+
+#define SYSCONFIG1              4       /* System Configuration 1 */
+#define SYSCONFIG1_RDSIEN       0x8000  /* bits 15..15: RDS Interrupt Enable (Si4701 only) */
+#define SYSCONFIG1_STCIEN       0x4000  /* bits 14..14: Seek/Tune Complete Interrupt Enable */
+#define SYSCONFIG1_RDS          0x1000  /* bits 12..12: RDS Enable (Si4701 only) */
+#define SYSCONFIG1_DE           0x0800  /* bits 11..11: De-emphasis (0=75us 1=50us) */
+#define SYSCONFIG1_AGCD         0x0400  /* bits 10..10: AGC Disable */
+#define SYSCONFIG1_BLNDADJ      0x00c0  /* bits 07..06: Stereo/Mono Blend Level Adjustment */
+#define SYSCONFIG1_GPIO3        0x0030  /* bits 05..04: General Purpose I/O 3 */
+#define SYSCONFIG1_GPIO2        0x000c  /* bits 03..02: General Purpose I/O 2 */
+#define SYSCONFIG1_GPIO1        0x0003  /* bits 01..00: General Purpose I/O 1 */
+
+#define SYSCONFIG2              5       /* System Configuration 2 */
+#define SYSCONFIG2_SEEKTH       0xff00  /* bits 15..08: RSSI Seek Threshold */
+#define SYSCONFIG2_BAND         0x0080  /* bits 07..06: Band Select */
+#define SYSCONFIG2_SPACE        0x0030  /* bits 05..04: Channel Spacing */
+#define SYSCONFIG2_VOLUME       0x000f  /* bits 03..00: Volume */
+
+#define SYSCONFIG3              6       /* System Configuration 3 */
+#define SYSCONFIG3_SMUTER       0xc000  /* bits 15..14: Softmute Attack/Recover Rate */
+#define SYSCONFIG3_SMUTEA       0x3000  /* bits 13..12: Softmute Attenuation */
+#define SYSCONFIG3_SKSNR        0x00f0  /* bits 07..04: Seek SNR Threshold */
+#define SYSCONFIG3_SKCNT        0x000f  /* bits 03..00: Seek FM Impulse Detection Threshold */
+
+#define TEST1                   7       /* Test 1 */
+#define TEST1_AHIZEN            0x4000  /* bits 14..14: Audio High-Z Enable */
+
+#define TEST2                   8       /* Test 2 */
+/* TEST2 only contains reserved bits */
+
+#define BOOTCONFIG              9       /* Boot Configuration */
+/* BOOTCONFIG only contains reserved bits */
+
+#define STATUSRSSI              10      /* Status RSSI */
+#define STATUSRSSI_RDSR         0x8000  /* bits 15..15: RDS Ready (Si4701 only) */
+#define STATUSRSSI_STC          0x4000  /* bits 14..14: Seek/Tune Complete */
+#define STATUSRSSI_SF           0x2000  /* bits 13..13: Seek Fail/Band Limit */
+#define STATUSRSSI_AFCRL        0x1000  /* bits 12..12: AFC Rail */
+#define STATUSRSSI_RDSS         0x0800  /* bits 11..11: RDS Synchronized (Si4701 only) */
+#define STATUSRSSI_BLERA        0x0600  /* bits 10..09: RDS Block A Errors (Si4701 only) */
+#define STATUSRSSI_ST           0x0100  /* bits 08..08: Stereo Indicator */
+#define STATUSRSSI_RSSI         0x00ff  /* bits 07..00: RSSI (Received Signal Strength Indicator) */
+
+#define READCHAN                11      /* Read Channel */
+#define READCHAN_BLERB          0xc000  /* bits 15..14: RDS Block D Errors (Si4701 only) */
+#define READCHAN_BLERC          0x3000  /* bits 13..12: RDS Block C Errors (Si4701 only) */
+#define READCHAN_BLERD          0x0c00  /* bits 11..10: RDS Block B Errors (Si4701 only) */
+#define READCHAN_READCHAN       0x03ff  /* bits 09..00: Read Channel */
+
+#define RDSA                    12      /* RDSA */
+#define RDSA_RDSA               0xffff  /* bits 15..00: RDS Block A Data (Si4701 only) */
+
+#define RDSB                    13      /* RDSB */
+#define RDSB_RDSB               0xffff  /* bits 15..00: RDS Block B Data (Si4701 only) */
+
+#define RDSC                    14      /* RDSC */
+#define RDSC_RDSC               0xffff  /* bits 15..00: RDS Block C Data (Si4701 only) */
+
+#define RDSD                    15      /* RDSD */
+#define RDSD_RDSD               0xffff  /* bits 15..00: RDS Block D Data (Si4701 only) */
+
+
+/**************************************************************************
+ * General Driver Definitions
+ **************************************************************************/
+
+/*
+ * si470x_device - private data
+ */
+struct si470x_device {
+        struct video_device *videodev;
+
+        /* reference to USB and video device */
+        struct usb_device *usbdev;
+        struct usb_interface *intf;
+
+        /* Interrupt endpoint handling */
+        char *int_in_buffer;
+        struct usb_endpoint_descriptor *int_in_endpoint;
+        struct urb *int_in_urb;
+        int int_in_running;
+
+        /* scratch page */
+        unsigned char software_version;
+        unsigned char hardware_version;
+
+        /* driver management */
+        unsigned char disconnected;
+        struct mutex disconnect_lock;
+        unsigned int users;
+
+        /* Silabs internal registers (0..15) */
+        unsigned short registers[RADIO_REGISTER_NUM];
+
+        /* RDS receive buffer */
+        wait_queue_head_t read_queue;
+        struct mutex lock;              /* buffer locking */
+        unsigned char *buffer;          /* size is always multiple of three */
+        unsigned int buf_size;
+        unsigned int rd_index;
+        unsigned int wr_index;
+};
+
+
+/*
+ * The frequency is set in units of 62.5 Hz when using V4L2_TUNER_CAP_LOW,
+ * 62.5 kHz otherwise.
+ * The tuner is able to have a channel spacing of 50, 100 or 200 kHz.
+ * tuner->capability is therefore set to V4L2_TUNER_CAP_LOW
+ * The FREQ_MUL is then: 1 MHz / 62.5 Hz = 16000
+ */
+#define FREQ_MUL (1000000 / 62.5)
+
+
+
+/**************************************************************************
+ * Common Functions
+ **************************************************************************/
+extern const struct v4l2_file_operations si470x_fops;
+extern struct video_device si470x_viddev_template;
+int si470x_get_register(struct si470x_device *radio, int regnr);
+int si470x_set_register(struct si470x_device *radio, int regnr);
+int si470x_set_freq(struct si470x_device *radio, unsigned int freq);
+int si470x_start(struct si470x_device *radio);
+int si470x_stop(struct si470x_device *radio);
+int si470x_rds_on(struct si470x_device *radio);
+int si470x_vidioc_querycap(struct file *file, void *priv,
+                struct v4l2_capability *capability);