V4L/DVB (6132): tea5767: convert from tuner sub-driver into dvb_frontend module

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Acked-by: Mike Isely <isely@pobox.com>
Acked-by: Steven Toth <stoth@hauppauge.com>
Acked-by: Patrick Boettcher <pb@linuxtv.org>
Acked-by: Jarod Wilson <jwilson@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 97 insertions, 52 deletions

diff --git a/drivers/media/video/tea5767.c b/drivers/media/video/tea5767.c
index 5a08ec2f99fb..cf908d853195 100644
--- a/drivers/media/video/tea5767.c
+++ b/drivers/media/video/tea5767.c
@@ -13,15 +13,19 @@
 #include <linux/i2c.h>
 #include <linux/delay.h>
 #include <linux/videodev.h>
-#include "tuner-driver.h"
+#include "tuner-i2c.h"
+#include "tea5767.h"
 
-#define PREFIX "TEA5767 "
+static int debug = 0;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "enable verbose debug messages");
 
-/* from tuner-core.c */
-extern int tuner_debug;
+#define PREFIX "tea5767 "
 
 struct tea5767_priv {
         struct tuner_i2c_props i2c_props;
+
+        u32 frequency;
 };
 
 /*****************************************************************************/
@@ -133,11 +137,6 @@ enum tea5767_xtal_freq {
 
 /*****************************************************************************/
 
-static void set_tv_freq(struct tuner *t, unsigned int freq)
-{
-        tuner_warn("This tuner doesn't support TV freq.\n");
-}
-
 static void tea5767_status_dump(unsigned char *buffer)
 {
         unsigned int div, frq;
@@ -192,14 +191,16 @@ static void tea5767_status_dump(unsigned char *buffer)
 }
 
 /* Freq should be specifyed at 62.5 Hz */
-static void set_radio_freq(struct tuner *t, unsigned int frq)
+static int set_radio_freq(struct dvb_frontend *fe,
+                          struct analog_parameters *params)
 {
-        struct tea5767_priv *priv = t->priv;
+        struct tea5767_priv *priv = fe->tuner_priv;
+        unsigned int frq = params->frequency;
         unsigned char buffer[5];
         unsigned div;
         int rc;
 
-        tuner_dbg (PREFIX "radio freq = %d.%03d MHz\n", frq/16000,(frq/16)%1000);
+        tuner_dbg("radio freq = %d.%03d MHz\n", frq/16000,(frq/16)%1000);
 
         /* Rounds freq to next decimal value - for 62.5 KHz step */
         /* frq = 20*(frq/16)+radio_frq[frq%16]; */
@@ -209,7 +210,7 @@ static void set_radio_freq(struct tuner *t, unsigned int frq)
                     TEA5767_ST_NOISE_CTL | TEA5767_JAPAN_BAND;
         buffer[4] = 0;
 
-        if (t->audmode == V4L2_TUNER_MODE_MONO) {
+        if (params->audmode == V4L2_TUNER_MODE_MONO) {
                 tuner_dbg("TEA5767 set to mono\n");
                 buffer[2] |= TEA5767_MONO;
         } else {
@@ -219,26 +220,26 @@ static void set_radio_freq(struct tuner *t, unsigned int frq)
         /* Should be replaced */
         switch (TEA5767_HIGH_LO_32768) {
         case TEA5767_HIGH_LO_13MHz:
-                tuner_dbg ("TEA5767 radio HIGH LO inject xtal @ 13 MHz\n");
+                tuner_dbg("radio HIGH LO inject xtal @ 13 MHz\n");
                 buffer[2] |= TEA5767_HIGH_LO_INJECT;
                 buffer[4] |= TEA5767_PLLREF_ENABLE;
                 div = (frq * (4000 / 16) + 700000 + 225000 + 25000) / 50000;
                 break;
         case TEA5767_LOW_LO_13MHz:
-                tuner_dbg ("TEA5767 radio LOW LO inject xtal @ 13 MHz\n");
+                tuner_dbg("radio LOW LO inject xtal @ 13 MHz\n");
 
                 buffer[4] |= TEA5767_PLLREF_ENABLE;
                 div = (frq * (4000 / 16) - 700000 - 225000 + 25000) / 50000;
                 break;
         case TEA5767_LOW_LO_32768:
-                tuner_dbg ("TEA5767 radio LOW LO inject xtal @ 32,768 MHz\n");
+                tuner_dbg("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 = ((frq * (4000 / 16) - 700000 - 225000) + 16384) >> 15;
                 break;
         case TEA5767_HIGH_LO_32768:
         default:
-                tuner_dbg ("TEA5767 radio HIGH LO inject xtal @ 32,768 MHz\n");
+                tuner_dbg("radio HIGH LO inject xtal @ 32,768 MHz\n");
 
                 buffer[2] |= TEA5767_HIGH_LO_INJECT;
                 buffer[3] |= TEA5767_XTAL_32768;
@@ -251,19 +252,23 @@ static void set_radio_freq(struct tuner *t, unsigned int frq)
         if (5 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 5)))
                 tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
 
-        if (tuner_debug) {
+        if (debug) {
                 if (5 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 5)))
                         tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
                 else
                         tea5767_status_dump(buffer);
         }
+
+        priv->frequency = frq * 125 / 2;
+
+        return 0;
 }
 
-static int tea5767_signal(struct tuner *t)
+static int tea5767_signal(struct dvb_frontend *fe)
 {
         unsigned char buffer[5];
         int rc;
-        struct tea5767_priv *priv = t->priv;
+        struct tea5767_priv *priv = fe->tuner_priv;
 
         memset(buffer, 0, sizeof(buffer));
         if (5 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 5)))
@@ -272,11 +277,11 @@ static int tea5767_signal(struct tuner *t)
         return ((buffer[3] & TEA5767_ADC_LEVEL_MASK) << 8);
 }
 
-static int tea5767_stereo(struct tuner *t)
+static int tea5767_stereo(struct dvb_frontend *fe)
 {
         unsigned char buffer[5];
         int rc;
-        struct tea5767_priv *priv = t->priv;
+        struct tea5767_priv *priv = fe->tuner_priv;
 
         memset(buffer, 0, sizeof(buffer));
         if (5 != (rc = tuner_i2c_xfer_recv(&priv->i2c_props, buffer, 5)))
@@ -284,15 +289,31 @@ static int tea5767_stereo(struct tuner *t)
 
         rc = buffer[2] & TEA5767_STEREO_MASK;
 
-        tuner_dbg("TEA5767 radio ST GET = %02x\n", rc);
+        tuner_dbg("radio ST GET = %02x\n", rc);
 
         return ((buffer[2] & TEA5767_STEREO_MASK) ? V4L2_TUNER_SUB_STEREO : 0);
 }
 
-static void tea5767_standby(struct tuner *t)
+static int tea5767_get_status(struct dvb_frontend *fe, u32 *status)
+{
+        struct tea5767_priv *priv = fe->tuner_priv;
+        int signal = tea5767_signal(fe);
+        *status = 0;
+
+        if (signal)
+                *status = TUNER_STATUS_LOCKED;
+        if (tea5767_stereo(fe))
+                *status |= TUNER_STATUS_STEREO;
+
+        tuner_dbg("tea5767: Signal strength: %d\n", signal);
+
+        return 0;
+}
+
+static int tea5767_standby(struct dvb_frontend *fe)
 {
         unsigned char buffer[5];
-        struct tea5767_priv *priv = t->priv;
+        struct tea5767_priv *priv = fe->tuner_priv;
         unsigned div, rc;
 
         div = (87500 * 4 + 700 + 225 + 25) / 50; /* Set frequency to 87.5 MHz */
@@ -305,23 +326,25 @@ static void tea5767_standby(struct tuner *t)
 
         if (5 != (rc = tuner_i2c_xfer_send(&priv->i2c_props, buffer, 5)))
                 tuner_warn("i2c i/o error: rc == %d (should be 5)\n", rc);
+
+        return 0;
 }
 
-int tea5767_autodetection(struct tuner *t)
+int tea5767_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr)
 {
-        struct tuner_i2c_props i2c = { .adap = t->i2c.adapter, .addr = t->i2c.addr };
+        struct tuner_i2c_props i2c = { .adap = i2c_adap, .addr = i2c_addr };
         unsigned char buffer[7] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
         int rc;
 
-        if ((rc = tuner_i2c_xfer_send(&i2c, buffer, 7))< 5) {
-                tuner_warn("It is not a TEA5767. Received %i bytes.\n", rc);
+        if ((rc = tuner_i2c_xfer_recv(&i2c, buffer, 7))< 5) {
+                printk(KERN_WARNING "It is not a TEA5767. Received %i bytes.\n", rc);
                 return EINVAL;
         }
 
         /* If all bytes are the same then it's a TV tuner and not a tea5767 */
         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");
+                printk(KERN_WARNING "All bytes are equal. It is not a TEA5767\n");
                 return EINVAL;
         }
 
@@ -331,51 +354,73 @@ int tea5767_autodetection(struct tuner *t)
          *  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");
+                printk(KERN_WARNING "Chip ID is not zero. It is not a TEA5767\n");
                 return EINVAL;
         }
 
         /* It seems that tea5767 returns 0xff after the 5th byte */
         if ((buffer[5] != 0xff) || (buffer[6] != 0xff)) {
-                tuner_warn("Returned more than 5 bytes. It is not a TEA5767\n");
+                printk(KERN_WARNING "Returned more than 5 bytes. It is not a TEA5767\n");
                 return EINVAL;
         }
 
-        tuner_warn("TEA5767 detected.\n");
+        printk(KERN_WARNING "TEA5767 detected.\n");
         return 0;
 }
 
-static void tea5767_release(struct tuner *t)
+static int tea5767_release(struct dvb_frontend *fe)
 {
-        kfree(t->priv);
-        t->priv = NULL;
+        kfree(fe->tuner_priv);
+        fe->tuner_priv = NULL;
+
+        return 0;
 }
 
-static struct tuner_operations tea5767_tuner_ops = {
-        .set_tv_freq    = set_tv_freq,
-        .set_radio_freq = set_radio_freq,
-        .has_signal     = tea5767_signal,
-        .is_stereo      = tea5767_stereo,
-        .standby        = tea5767_standby,
-        .release        = tea5767_release,
+static int tea5767_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+        struct tea5767_priv *priv = fe->tuner_priv;
+        *frequency = priv->frequency;
+        return 0;
+}
+
+static struct dvb_tuner_ops tea5767_tuner_ops = {
+        .info = {
+                .name           = "tea5767", // Philips TEA5767HN FM Radio
+        },
+
+        .set_analog_params = set_radio_freq,
+        .sleep             = tea5767_standby,
+        .release           = tea5767_release,
+        .get_frequency     = tea5767_get_frequency,
+        .get_status        = tea5767_get_status,
 };
 
-int tea5767_tuner_init(struct tuner *t)
+struct dvb_frontend *tea5767_attach(struct dvb_frontend *fe,
+                                    struct i2c_adapter* i2c_adap,
+                                    u8 i2c_addr)
 {
         struct tea5767_priv *priv = NULL;
 
         priv = kzalloc(sizeof(struct tea5767_priv), GFP_KERNEL);
         if (priv == NULL)
-                return -ENOMEM;
-        t->priv = priv;
+                return NULL;
+        fe->tuner_priv = priv;
 
-        priv->i2c_props.addr = t->i2c.addr;
-        priv->i2c_props.adap = t->i2c.adapter;
+        priv->i2c_props.addr = i2c_addr;
+        priv->i2c_props.adap = i2c_adap;
 
-        tuner_info("type set to %d (%s)\n", t->type, "Philips TEA5767HN FM Radio");
-        strlcpy(t->i2c.name, "tea5767", sizeof(t->i2c.name));
+        memcpy(&fe->ops.tuner_ops, &tea5767_tuner_ops,
+               sizeof(struct dvb_tuner_ops));
 
-        memcpy(&t->ops, &tea5767_tuner_ops, sizeof(struct tuner_operations));
+        tuner_info("type set to %s\n", "Philips TEA5767HN FM Radio");
 
-        return (0);
+        return fe;
 }
+
+
+EXPORT_SYMBOL_GPL(tea5767_attach);
+EXPORT_SYMBOL_GPL(tea5767_autodetection);
+
+MODULE_DESCRIPTION("Philips TEA5767 FM tuner driver");
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
+MODULE_LICENSE("GPL");