V4L/DVB (5313): Added a config entry and a gpio function pointer to tuner struct

These entries mainly are to support configurations of the tda827x
silicon tuner with a preamplifier.
The values can be set throgh the attach inform or through
the extended TUNER_SET_TYPE_ADDR client call. The function pointer
will only be updated if the parameter is not NULL.
Since a typecast is necessary to set the pointer, i added a typedef for
this pointer (tuner_gpio_func_t) in tuner.h
Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/saa7134/saa7134-cards.c

@@ -2543,11 +2543,12 @@ struct saa7134_board saa7134_boards[] = {
 		.name           = "Philips Tiger reference design",
 		.audio_clock    = 0x00187de7,
 		.tuner_type     = TUNER_PHILIPS_TDA8290,
+		.tuner_config   = 0,
 		.radio_type     = UNSET,
 		.tuner_addr	= ADDR_UNSET,
 		.radio_addr	= ADDR_UNSET,
 		.mpeg           = SAA7134_MPEG_DVB,
-		.gpiomask       = 1 << 21,
+		.gpiomask       = 0x0200000,
 		.inputs = {{
 			.name   = name_tv,
 			.vmux   = 1,

drivers/media/video/saa7134/saa7134-i2c.c

@@ -370,6 +370,8 @@ static int attach_inform(struct i2c_client *client)
 
 		tun_setup.type = tuner;
 		tun_setup.addr = saa7134_boards[dev->board].tuner_addr;
+		tun_setup.config = saa7134_boards[dev->board].tuner_config;
+		tun_setup.gpio_func = (tuner_gpio_func_t) saa7134_set_gpio;
 
 		if ((tun_setup.addr == ADDR_UNSET)||(tun_setup.addr == client->addr)) {
 

drivers/media/video/saa7134/saa7134.h

@@ -280,6 +280,7 @@ struct saa7134_board {
 	unsigned char		radio_addr;
 
 	unsigned int            tda9887_conf;
+	unsigned int            tuner_config;
 
 	/* peripheral I/O */
 	enum saa7134_video_out  video_out;

drivers/media/video/tuner-core.c

@@ -144,7 +144,8 @@ static void set_freq(struct i2c_client *c, unsigned long freq)
 }
 
 static void set_type(struct i2c_client *c, unsigned int type,
-		     unsigned int new_mode_mask)
+		     unsigned int new_mode_mask, unsigned int new_config,
+		     tuner_gpio_func_t gpio_func)
 {
 	struct tuner *t = i2c_get_clientdata(c);
 	unsigned char buffer[4];
@@ -173,6 +174,11 @@ static void set_type(struct i2c_client *c, unsigned int type,
 		microtune_init(c);
 		break;
 	case TUNER_PHILIPS_TDA8290:
+		t->config = new_config;
+		if (gpio_func != NULL) {
+			tuner_dbg("Defining GPIO function\n");
+			t->gpio_func = gpio_func;
+		}
 		tda8290_init(c);
 		break;
 	case TUNER_TEA5767:
@@ -234,10 +240,11 @@ static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup)
 
 	tuner_dbg("set addr for type %i\n", t->type);
 
-	if ( t->type == UNSET && ((tun_setup->addr == ADDR_UNSET &&
-		(t->mode_mask & tun_setup->mode_mask)) ||
-		tun_setup->addr == c->addr)) {
-			set_type(c, tun_setup->type, tun_setup->mode_mask);
+	if ( (t->type == UNSET && ((tun_setup->addr == ADDR_UNSET) &&
+		(t->mode_mask & tun_setup->mode_mask))) ||
+		(tun_setup->addr == c->addr)) {
+			set_type(c, tun_setup->type, tun_setup->mode_mask,
+				 tun_setup->config, tun_setup->gpio_func);
 	}
 }
 
@@ -496,7 +503,7 @@ static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
 register_client:
 	tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name);
 	i2c_attach_client (&t->i2c);
-	set_type (&t->i2c,t->type, t->mode_mask);
+	set_type (&t->i2c,t->type, t->mode_mask, t->config, t->gpio_func);
 	return 0;
 }
 
@@ -576,10 +583,11 @@ static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
 	switch (cmd) {
 	/* --- configuration --- */
 	case TUNER_SET_TYPE_ADDR:
-		tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n",
+		tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x, config=0x%02x\n",
 				((struct tuner_setup *)arg)->type,
 				((struct tuner_setup *)arg)->addr,
-				((struct tuner_setup *)arg)->mode_mask);
+				((struct tuner_setup *)arg)->mode_mask,
+				((struct tuner_setup *)arg)->config);
 
 		set_addr(client, (struct tuner_setup *)arg);
 		break;

include/media/tuner.h

@@ -173,10 +173,15 @@ enum tuner_mode {
    when the tuner is set to TV mode.
  */
 
+/* allows to access the GPIOs of the host (pci bridge) */
+typedef void (*tuner_gpio_func_t) (void *dev, int bit_no,int value);
+
 struct tuner_setup {
 	unsigned short	addr; 	/* I2C address */
 	unsigned int	type;   /* Tuner type */
 	unsigned int	mode_mask;  /* Allowed tuner modes */
+	unsigned int	config; /* configuraion for more complex tuners */
+	tuner_gpio_func_t gpio_func;
 };
 
 struct tuner {
@@ -210,6 +215,8 @@ struct tuner {
 	unsigned char tda827x_addr;
 	unsigned char tda827x_ver;
 	unsigned int sgIF;
+	unsigned int config;
+	tuner_gpio_func_t gpio_func;
 
 	/* function ptrs */
 	void (*set_tv_freq)(struct i2c_client *c, unsigned int freq);