[PATCH] v4l: tuner improvements

*tuner-core.c:
- some tuner_info msgs will be generated only if insmod opt
        tuner_debug enabled.
- Implemented tuner-core support for VIDIO_S_TUNER to allow
        changing mono/stereo mode
- Remove unneeded config options.
- I2C_CLIENT_MULTI option removed.
- support for Philips FMD12ME hybrid tuner
- allow to initialize with another tuner
- Move PHILIPS_FMD initialization code to set_type function,

* tda8290:

- Fix dumb error in tda8290 tunning.
- Radio tuner uses high-precision step instead of 62.5 KHz.

*tea5767.c:
- tuner_info msgs will be generated only if insmod tuner option
        tuner_debug enabled.
- some cleanups for better reading.
- Radio tuner uses high-precision step instead of 62.5 KHz.
- Changing radio mode stereo/mono for tea5767 working.

*tuner-simple.c:
- TNF9533-D/IF UHF fixup.
- Radio tuners now uses high-precision step instead of 62.5 KHz.

*mt20xx.c:
        - Radio tuner uses high-precision step instead of 62.5 KHz.

*tda9887.c:
        - tab and blank spaces corrections.

Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Gerd Knorr <kraxel@bytesex.org>
Signed-off-by: Nickolay V Shmyrev <nshmyrev@yandex.ru>
Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Michael Krufky <mkrufky@m1k.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 334 insertions, 0 deletions

diff --git a/drivers/media/video/tea5767.c b/drivers/media/video/tea5767.c
new file mode 100644
index 000000000000..a29f08f81f63
--- /dev/null
+++ b/drivers/media/video/tea5767.c
@@ -0,0 +1,334 @@
+/*
+ * For Philips TEA5767 FM Chip used on some TV Cards like Prolink Pixelview
+ * I2C address is allways 0xC0.
+ *
+ * $Id: tea5767.c,v 1.11 2005/06/21 15:40:33 mchehab Exp $
+ *
+ * Copyright (c) 2005 Mauro Carvalho Chehab (mchehab@brturbo.com.br)
+ * This code is placed under the terms of the GNU General Public License
+ *
+ * tea5767 autodetection thanks to Torsten Seeboth and Atsushi Nakagawa
+ * from their contributions on DScaler.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/string.h>
+#include <linux/timer.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/videodev.h>
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+
+#include <media/tuner.h>
+
+/* Declared at tuner-core.c */
+extern unsigned int tuner_debug;
+
+#define PREFIX "TEA5767 "
+
+/*****************************************************************************/
+
+/******************************
+ * Write mode register values *
+ ******************************/
+
+/* First register */
+#define TEA5767_MUTE            0x80 /* Mutes output */
+#define TEA5767_SEARCH          0x40 /* Activates station search */
+/* Bits 0-5 for divider MSB */
+
+/* Second register */
+/* Bits 0-7 for divider LSB */
+
+/* Third register */
+
+/* Station search from botton to up */
+#define TEA5767_SEARCH_UP       0x80
+
+/* Searches with ADC output = 10 */
+#define TEA5767_SRCH_HIGH_LVL   0x60
+
+/* Searches with ADC output = 10 */
+#define TEA5767_SRCH_MID_LVL    0x40
+
+/* Searches with ADC output = 5 */
+#define TEA5767_SRCH_LOW_LVL    0x20
+
+/* if on, div=4*(Frf+Fif)/Fref otherwise, div=4*(Frf-Fif)/Freq) */
+#define TEA5767_HIGH_LO_INJECT  0x10
+
+/* Disable stereo */
+#define TEA5767_MONO            0x08
+
+/* Disable right channel and turns to mono */
+#define TEA5767_MUTE_RIGHT      0x04
+
+/* Disable left channel and turns to mono */
+#define TEA5767_MUTE_LEFT       0x02
+
+#define TEA5767_PORT1_HIGH      0x01
+
+/* Forth register */
+#define TEA5767_PORT2_HIGH      0x80
+/* Chips stops working. Only I2C bus remains on */
+#define TEA5767_STDBY           0x40
+
+/* Japan freq (76-108 MHz. If disabled, 87.5-108 MHz */
+#define TEA5767_JAPAN_BAND      0x20
+
+/* Unselected means 32.768 KHz freq as reference. Otherwise Xtal at 13 MHz */
+#define TEA5767_XTAL_32768      0x10
+
+/* Cuts weak signals */
+#define TEA5767_SOFT_MUTE       0x08
+
+/* Activates high cut control */
+#define TEA5767_HIGH_CUT_CTRL   0x04
+
+/* Activates stereo noise control */
+#define TEA5767_ST_NOISE_CTL    0x02
+
+/* If activate PORT 1 indicates SEARCH or else it is used as PORT1 */
+#define TEA5767_SRCH_IND        0x01
+
+/* Fiveth register */
+
+/* By activating, it will use Xtal at 13 MHz as reference for divider */
+#define TEA5767_PLLREF_ENABLE   0x80
+
+/* By activating, deemphasis=50, or else, deemphasis of 50us */
+#define TEA5767_DEEMPH_75       0X40
+
+/*****************************
+ * Read mode register values *
+ *****************************/
+
+/* First register */
+#define TEA5767_READY_FLAG_MASK 0x80
+#define TEA5767_BAND_LIMIT_MASK 0X40
+/* Bits 0-5 for divider MSB after search or preset */
+
+/* Second register */
+/* Bits 0-7 for divider LSB after search or preset */
+
+/* Third register */
+#define TEA5767_STEREO_MASK     0x80
+#define TEA5767_IF_CNTR_MASK    0x7f
+
+/* Four register */
+#define TEA5767_ADC_LEVEL_MASK  0xf0
+
+/* should be 0 */
+#define TEA5767_CHIP_ID_MASK    0x0f
+
+/* Fiveth register */
+/* Reserved for future extensions */
+#define TEA5767_RESERVED_MASK   0xff
+
+/*****************************************************************************/
+
+static void set_tv_freq(struct i2c_client *c, unsigned int freq)
+{
+        struct tuner *t = i2c_get_clientdata(c);
+
+        tuner_warn("This tuner doesn't support TV freq.\n");
+}
+
+static void tea5767_status_dump(unsigned char *buffer)
+{
+        unsigned int div, frq;
+
+        if (TEA5767_READY_FLAG_MASK & buffer[0])
+                printk(PREFIX "Ready Flag ON\n");
+        else
+                printk(PREFIX "Ready Flag OFF\n");
+
+        if (TEA5767_BAND_LIMIT_MASK & buffer[0])
+                printk(PREFIX "Tuner at band limit\n");
+        else
+                printk(PREFIX "Tuner not at band limit\n");
+
+        div=((buffer[0]&0x3f)<<8) | buffer[1];
+
+        switch (TEA5767_HIGH_LO_32768) {
+        case TEA5767_HIGH_LO_13MHz:
+                frq = 1000*(div*50-700-225)/4; /* Freq in KHz */
+                break;
+        case TEA5767_LOW_LO_13MHz:
+                frq = 1000*(div*50+700+225)/4; /* Freq in KHz */
+                break;
+        case TEA5767_LOW_LO_32768:
+                frq = 1000*(div*32768/1000+700+225)/4; /* Freq in KHz */
+                break;
+        case TEA5767_HIGH_LO_32768:
+        default:
+                frq = 1000*(div*32768/1000-700-225)/4; /* Freq in KHz */
+                break;
+        }
+        buffer[0] = (div>>8) & 0x3f;
+        buffer[1] = div      & 0xff;
+
+        printk(PREFIX "Frequency %d.%03d KHz (divider = 0x%04x)\n",
+                                                frq/1000,frq%1000,div);
+
+        if (TEA5767_STEREO_MASK & buffer[2])
+                printk(PREFIX "Stereo\n");
+        else
+                printk(PREFIX "Mono\n");
+
+        printk(PREFIX "IF Counter = %d\n",buffer[2] & TEA5767_IF_CNTR_MASK);
+
+        printk(PREFIX "ADC Level = %d\n",(buffer[3] & TEA5767_ADC_LEVEL_MASK)>>4);
+
+        printk(PREFIX "Chip ID = %d\n",(buffer[3] & TEA5767_CHIP_ID_MASK));
+
+        printk(PREFIX "Reserved = 0x%02x\n",(buffer[4] & TEA5767_RESERVED_MASK));
+}
+
+/* Freq should be specifyed at 62.5 Hz */
+static void set_radio_freq(struct i2c_client *c, unsigned int frq)
+{
+        struct tuner *t = i2c_get_clientdata(c);
+        unsigned char buffer[5];
+        unsigned div;
+        int rc;
+
+        if ( tuner_debug )
+                printk(PREFIX "radio freq counter %d\n",frq);
+
+        /* Rounds freq to next decimal value - for 62.5 KHz step */
+        /* frq = 20*(frq/16)+radio_frq[frq%16]; */
+
+        buffer[2] = TEA5767_PORT1_HIGH;
+        buffer[3] = TEA5767_PORT2_HIGH | TEA5767_HIGH_CUT_CTRL | TEA5767_ST_NOISE_CTL | TEA5767_JAPAN_BAND;
+        buffer[4]=0;
+
+        if (t->audmode == V4L2_TUNER_MODE_MONO) {
+                tuner_dbg("TEA5767 set to mono\n");
+                buffer[2] |= TEA5767_MONO;
+        } else
+                tuner_dbg("TEA5767 set to stereo\n");
+
+        switch (t->type) {
+        case TEA5767_HIGH_LO_13MHz:
+                tuner_dbg("TEA5767 radio HIGH LO inject xtal @ 13 MHz\n");
+                buffer[2] |= TEA5767_HIGH_LO_INJECT;
+                buffer[4] |= TEA5767_PLLREF_ENABLE;
+                div = (frq*4/16+700+225+25)/50;
+                break;
+        case TEA5767_LOW_LO_13MHz:
+                tuner_dbg("TEA5767 radio LOW LO inject xtal @ 13 MHz\n");
+
+                buffer[4] |= TEA5767_PLLREF_ENABLE;
+                div = (frq*4/16-700-225+25)/50;
+                break;
+        case TEA5767_LOW_LO_32768:
+                tuner_dbg("TEA5767 radio LOW LO inject xtal @ 32,768 MHz\n");
+                buffer[3] |= TEA5767_XTAL_32768;
+                /* const 700=4000*175 Khz - to adjust freq to right value */
+                div = (1000*(frq*4/16-700-225)+16384)>>15;
+                break;
+        case TEA5767_HIGH_LO_32768:
+        default:
+                tuner_dbg("TEA5767 radio HIGH LO inject xtal @ 32,768 MHz\n");
+
+                buffer[2] |= TEA5767_HIGH_LO_INJECT;
+                buffer[3] |= TEA5767_XTAL_32768;
+                div = (1000*(frq*4/16+700+225)+16384)>>15;
+                break;
+        }
+        buffer[0] = (div>>8) & 0x3f;
+        buffer[1] = div      & 0xff;
+
+        if ( tuner_debug )
+                tea5767_status_dump(buffer);
+
+        if (5 != (rc = i2c_master_send(c,buffer,5)))
+                tuner_warn("i2c i/o error: rc == %d (should be 5)\n",rc);
+}
+
+static int tea5767_signal(struct i2c_client *c)
+{
+        unsigned char buffer[5];
+        int rc;
+        struct tuner *t = i2c_get_clientdata(c);
+
+        memset(buffer,0,sizeof(buffer));
+        if (5 != (rc = i2c_master_recv(c,buffer,5)))
+                tuner_warn ( "i2c i/o error: rc == %d (should be 5)\n",rc);
+
+        return ((buffer[3] & TEA5767_ADC_LEVEL_MASK) <<(13-4));
+}
+
+static int tea5767_stereo(struct i2c_client *c)
+{
+        unsigned char buffer[5];
+        int rc;
+        struct tuner *t = i2c_get_clientdata(c);
+
+        memset(buffer,0,sizeof(buffer));
+        if (5 != (rc = i2c_master_recv(c,buffer,5)))
+                tuner_warn ( "i2c i/o error: rc == %d (should be 5)\n",rc);
+
+        rc = buffer[2] & TEA5767_STEREO_MASK;
+
+        if ( tuner_debug )
+                tuner_dbg("TEA5767 radio ST GET = %02x\n", rc);
+
+        return ( (buffer[2] & TEA5767_STEREO_MASK) ? V4L2_TUNER_SUB_STEREO: 0);
+}
+
+int tea_detection(struct i2c_client *c)
+{
+        unsigned char buffer[5]= { 0xff, 0xff, 0xff, 0xff, 0xff };
+        int rc;
+        struct tuner *t = i2c_get_clientdata(c);
+
+        if (5 != (rc = i2c_master_recv(c,buffer,5))) {
+                tuner_warn ( "it is not a TEA5767. Received %i chars.\n",rc );
+                return EINVAL;
+        }
+
+        /* If all bytes are the same then it's a TV tuner and not a tea5767 chip. */
+        if (buffer[0] == buffer[1] &&  buffer[0] == buffer[2] &&
+            buffer[0] == buffer[3] &&  buffer[0] == buffer[4]) {
+                tuner_warn ( "All bytes are equal. It is not a TEA5767\n" );
+                return EINVAL;
+        }
+
+        /*  Status bytes:
+         *  Byte 4: bit 3:1 : CI (Chip Identification) == 0
+         *          bit 0   : internally set to 0
+         *  Byte 5: bit 7:0 : == 0
+         */
+
+        if (!((buffer[3] & 0x0f) == 0x00) && (buffer[4] == 0x00)) {
+                tuner_warn ( "Chip ID is not zero. It is not a TEA5767\n" );
+                return EINVAL;
+        }
+        tuner_warn ( "TEA5767 detected.\n" );
+        return 0;
+}
+
+int tea5767_tuner_init(struct i2c_client *c)
+{
+        struct tuner *t = i2c_get_clientdata(c);
+
+        if (tea_detection(c)==EINVAL) return EINVAL;
+
+        tuner_info("type set to %d (%s)\n",
+                   t->type, TEA5767_TUNER_NAME);
+        strlcpy(c->name, TEA5767_TUNER_NAME, sizeof(c->name));
+
+        t->tv_freq    = set_tv_freq;
+        t->radio_freq = set_radio_freq;
+        t->has_signal = tea5767_signal;
+        t->is_stereo  = tea5767_stereo;
+
+        return (0);
+}