V4L/DVB (12900): DiB8000: added support for DiBcom ISDB-T/ISDB-Tsb demodulator DiB8000

This commit adds support for the DiB8000 ISDB-T demodulator made by DiBcom.
Signed-off-by: Olivier Grenie <Olivier.Grenie@dibcom.fr>
Signed-off-by: Patrick Boettcher <pboettcher@dibcom.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-usb/Kconfig

@@ -71,6 +71,7 @@ config DVB_USB_DIB0700
 	depends on DVB_USB
 	select DVB_DIB7000P if !DVB_FE_CUSTOMISE
 	select DVB_DIB7000M if !DVB_FE_CUSTOMISE
+	select DVB_DIB8000 if !DVB_FE_CUSTOMISE
 	select DVB_DIB3000MC if !DVB_FE_CUSTOMISE
 	select DVB_S5H1411 if !DVB_FE_CUSTOMISE
 	select DVB_LGDT3305 if !DVB_FE_CUSTOMISE
@@ -87,7 +88,7 @@ config DVB_USB_DIB0700
 	  Avermedia and other big and small companies.
 
 	  For an up-to-date list of devices supported by this driver, have a look
-	  on the Linux-DVB Wiki at www.linuxtv.org.
+	  on the LinuxTV Wiki at www.linuxtv.org.
 
 	  Say Y if you own such a device and want to use it. You should build it as
 	  a module.

drivers/media/dvb/frontends/Kconfig

@@ -484,6 +484,14 @@ config DVB_S921
 	  AN ISDB-T DQPSK, QPSK, 16QAM and 64QAM 1seg tuner module.
 	  Say Y when you want to support this frontend.
 
+config DVB_DIB8000
+	tristate "DiBcom 8000MB/MC"
+	depends on DVB_CORE && I2C
+	default m if DVB_FE_CUSTOMISE
+	help
+	  A driver for DiBcom's DiB8000 ISDB-T/ISDB-Tsb demodulator.
+	  Say Y when you want to support this frontend.
+
 comment "Digital terrestrial only tuners/PLL"
 	depends on DVB_CORE
 

drivers/media/dvb/frontends/Makefile

@@ -23,6 +23,7 @@ obj-$(CONFIG_DVB_DIB3000MB) += dib3000mb.o
 obj-$(CONFIG_DVB_DIB3000MC) += dib3000mc.o dibx000_common.o
 obj-$(CONFIG_DVB_DIB7000M) += dib7000m.o dibx000_common.o
 obj-$(CONFIG_DVB_DIB7000P) += dib7000p.o dibx000_common.o
+obj-$(CONFIG_DVB_DIB8000) += dib8000.o dibx000_common.o
 obj-$(CONFIG_DVB_MT312) += mt312.o
 obj-$(CONFIG_DVB_VES1820) += ves1820.o
 obj-$(CONFIG_DVB_VES1X93) += ves1x93.o

drivers/media/dvb/frontends/dib8000.h

+#ifndef DIB8000_H
+#define DIB8000_H
+
+#include "dibx000_common.h"
+
+struct dib8000_config {
+	u8 output_mpeg2_in_188_bytes;
+	u8 hostbus_diversity;
+	u8 tuner_is_baseband;
+	int (*update_lna) (struct dvb_frontend *, u16 agc_global);
+
+	u8 agc_config_count;
+	struct dibx000_agc_config *agc;
+	struct dibx000_bandwidth_config *pll;
+
+#define DIB8000_GPIO_DEFAULT_DIRECTIONS 0xffff
+	u16 gpio_dir;
+#define DIB8000_GPIO_DEFAULT_VALUES     0x0000
+	u16 gpio_val;
+#define DIB8000_GPIO_PWM_POS0(v)        ((v & 0xf) << 12)
+#define DIB8000_GPIO_PWM_POS1(v)        ((v & 0xf) << 8 )
+#define DIB8000_GPIO_PWM_POS2(v)        ((v & 0xf) << 4 )
+#define DIB8000_GPIO_PWM_POS3(v)         (v & 0xf)
+#define DIB8000_GPIO_DEFAULT_PWM_POS    0xffff
+	u16 gpio_pwm_pos;
+	u16 pwm_freq_div;
+
+	void (*agc_control) (struct dvb_frontend *, u8 before);
+
+	u16 drives;
+	u16 diversity_delay;
+	u8 div_cfg;
+	u8 output_mode;
+	u8 refclksel;
+};
+
+#define DEFAULT_DIB8000_I2C_ADDRESS 18
+
+#if defined(CONFIG_DVB_DIB8000) || (defined(CONFIG_DVB_DIB8000_MODULE) && defined(MODULE))
+extern struct dvb_frontend *dib8000_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib8000_config *cfg);
+extern struct i2c_adapter *dib8000_get_i2c_master(struct dvb_frontend *, enum dibx000_i2c_interface, int);
+
+extern int dib8000_i2c_enumeration(struct i2c_adapter *host, int no_of_demods, u8 default_addr, u8 first_addr);
+
+extern int dib8000_set_gpio(struct dvb_frontend *, u8 num, u8 dir, u8 val);
+extern int dib8000_set_wbd_ref(struct dvb_frontend *, u16 value);
+#else
+static inline struct dvb_frontend *dib8000_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib8000_config *cfg)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+
+static inline struct i2c_adapter *dib8000_get_i2c_master(struct dvb_frontend *fe, enum dibx000_i2c_interface i, int x)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+
+int dib8000_i2c_enumeration(struct i2c_adapter *host, int no_of_demods, u8 default_addr, u8 first_addr)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return -ENODEV;
+}
+
+int dib8000_set_gpio(struct dvb_frontend *fe, u8 num, u8 dir, u8 val)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return -ENODEV;
+}
+
+int dib8000_set_wbd_ref(struct dvb_frontend *fe, u16 value)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return -ENODEV;
+}
+#endif
+
+#endif

drivers/media/dvb/frontends/dibx000_common.c

@@ -15,23 +15,25 @@ static int dibx000_write_word(struct dibx000_i2c_master *mst, u16 reg, u16 val)
 		(val >> 8) & 0xff, val & 0xff,
 	};
 	struct i2c_msg msg = {
-		.addr = mst->i2c_addr, .flags = 0, .buf = b, .len = 4
+		.addr = mst->i2c_addr,.flags = 0,.buf = b,.len = 4
 	};
 	return i2c_transfer(mst->i2c_adap, &msg, 1) != 1 ? -EREMOTEIO : 0;
 }
 
 
-static int dibx000_i2c_select_interface(struct dibx000_i2c_master *mst, enum dibx000_i2c_interface intf)
+static int dibx000_i2c_select_interface(struct dibx000_i2c_master *mst,
+					enum dibx000_i2c_interface intf)
 {
 	if (mst->device_rev > DIB3000MC && mst->selected_interface != intf) {
-		dprintk("selecting interface: %d\n",intf);
+		dprintk("selecting interface: %d\n", intf);
 		mst->selected_interface = intf;
 		return dibx000_write_word(mst, mst->base_reg + 4, intf);
 	}
 	return 0;
 }
 
-static int dibx000_i2c_gate_ctrl(struct dibx000_i2c_master *mst, u8 tx[4], u8 addr, int onoff)
+static int dibx000_i2c_gate_ctrl(struct dibx000_i2c_master *mst, u8 tx[4],
+				 u8 addr, int onoff)
 {
 	u16 val;
 
@@ -45,7 +47,7 @@ static int dibx000_i2c_gate_ctrl(struct dibx000_i2c_master *mst, u8 tx[4], u8 ad
 		val <<= 1;
 
 	tx[0] = (((mst->base_reg + 1) >> 8) & 0xff);
-	tx[1] = ( (mst->base_reg + 1)       & 0xff);
+	tx[1] = ((mst->base_reg + 1) & 0xff);
 	tx[2] = val >> 8;
 	tx[3] = val & 0xff;
 
@@ -57,13 +59,14 @@ static u32 dibx000_i2c_func(struct i2c_adapter *adapter)
 	return I2C_FUNC_I2C;
 }
 
-static int dibx000_i2c_gated_tuner_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg msg[], int num)
+static int dibx000_i2c_gated_tuner_xfer(struct i2c_adapter *i2c_adap,
+					struct i2c_msg msg[], int num)
 {
 	struct dibx000_i2c_master *mst = i2c_get_adapdata(i2c_adap);
 	struct i2c_msg m[2 + num];
 	u8 tx_open[4], tx_close[4];
 
-	memset(m,0, sizeof(struct i2c_msg) * (2 + num));
+	memset(m, 0, sizeof(struct i2c_msg) * (2 + num));
 
 	dibx000_i2c_select_interface(mst, DIBX000_I2C_INTERFACE_TUNER);
 
@@ -75,11 +78,11 @@ static int dibx000_i2c_gated_tuner_xfer(struct i2c_adapter *i2c_adap, struct i2c
 	memcpy(&m[1], msg, sizeof(struct i2c_msg) * num);
 
 	dibx000_i2c_gate_ctrl(mst, tx_close, 0, 0);
-	m[num+1].addr = mst->i2c_addr;
-	m[num+1].buf  = tx_close;
-	m[num+1].len  = 4;
+	m[num + 1].addr = mst->i2c_addr;
+	m[num + 1].buf = tx_close;
+	m[num + 1].len = 4;
 
-	return i2c_transfer(mst->i2c_adap, m, 2+num) == 2 + num ? num : -EIO;
+	return i2c_transfer(mst->i2c_adap, m, 2 + num) == 2 + num ? num : -EIO;
 }
 
 static struct i2c_algorithm dibx000_i2c_gated_tuner_algo = {
@@ -87,7 +90,9 @@ static struct i2c_algorithm dibx000_i2c_gated_tuner_algo = {
 	.functionality = dibx000_i2c_func,
 };
 
-struct i2c_adapter * dibx000_get_i2c_adapter(struct dibx000_i2c_master *mst, enum dibx000_i2c_interface intf, int gating)
+struct i2c_adapter *dibx000_get_i2c_adapter(struct dibx000_i2c_master *mst,
+					    enum dibx000_i2c_interface intf,
+					    int gating)
 {
 	struct i2c_adapter *i2c = NULL;
 
@@ -103,13 +108,29 @@ struct i2c_adapter * dibx000_get_i2c_adapter(struct dibx000_i2c_master *mst, enu
 
 	return i2c;
 }
+
 EXPORT_SYMBOL(dibx000_get_i2c_adapter);
 
-static int i2c_adapter_init(struct i2c_adapter *i2c_adap, struct i2c_algorithm *algo, const char *name, struct dibx000_i2c_master *mst)
+void dibx000_reset_i2c_master(struct dibx000_i2c_master *mst)
+{
+	/* initialize the i2c-master by closing the gate */
+	u8 tx[4];
+	struct i2c_msg m = {.addr = mst->i2c_addr,.buf = tx,.len = 4 };
+
+	dibx000_i2c_gate_ctrl(mst, tx, 0, 0);
+	i2c_transfer(mst->i2c_adap, &m, 1);
+	mst->selected_interface = 0xff;	// the first time force a select of the I2C
+	dibx000_i2c_select_interface(mst, DIBX000_I2C_INTERFACE_TUNER);
+}
+
+EXPORT_SYMBOL(dibx000_reset_i2c_master);
+
+static int i2c_adapter_init(struct i2c_adapter *i2c_adap,
+			    struct i2c_algorithm *algo, const char *name,
+			    struct dibx000_i2c_master *mst)
 {
 	strncpy(i2c_adap->name, name, sizeof(i2c_adap->name));
-	i2c_adap->class     = I2C_CLASS_TV_DIGITAL,
-	i2c_adap->algo      = algo;
+	i2c_adap->class = I2C_CLASS_TV_DIGITAL, i2c_adap->algo = algo;
 	i2c_adap->algo_data = NULL;
 	i2c_set_adapdata(i2c_adap, mst);
 	if (i2c_add_adapter(i2c_adap) < 0)
@@ -117,34 +138,40 @@ static int i2c_adapter_init(struct i2c_adapter *i2c_adap, struct i2c_algorithm *
 	return 0;
 }
 
-int dibx000_init_i2c_master(struct dibx000_i2c_master *mst, u16 device_rev, struct i2c_adapter *i2c_adap, u8 i2c_addr)
+int dibx000_init_i2c_master(struct dibx000_i2c_master *mst, u16 device_rev,
+			    struct i2c_adapter *i2c_adap, u8 i2c_addr)
 {
 	u8 tx[4];
-	struct i2c_msg m = { .addr = i2c_addr >> 1, .buf = tx, .len = 4 };
+	struct i2c_msg m = {.addr = i2c_addr >> 1,.buf = tx,.len = 4 };
 
 	mst->device_rev = device_rev;
 	mst->i2c_adap = i2c_adap;
 	mst->i2c_addr = i2c_addr >> 1;
 
-	if (device_rev == DIB7000P)
+	if (device_rev == DIB7000P || device_rev == DIB8000)
 		mst->base_reg = 1024;
 	else
 		mst->base_reg = 768;
 
-    if (i2c_adapter_init(&mst->gated_tuner_i2c_adap, &dibx000_i2c_gated_tuner_algo, "DiBX000 tuner I2C bus", mst) != 0)
-		printk(KERN_ERR "DiBX000: could not initialize the tuner i2c_adapter\n");
+	if (i2c_adapter_init
+	    (&mst->gated_tuner_i2c_adap, &dibx000_i2c_gated_tuner_algo,
+	     "DiBX000 tuner I2C bus", mst) != 0)
+		printk(KERN_ERR
+		       "DiBX000: could not initialize the tuner i2c_adapter\n");
 
 	/* initialize the i2c-master by closing the gate */
 	dibx000_i2c_gate_ctrl(mst, tx, 0, 0);
 
 	return i2c_transfer(i2c_adap, &m, 1) == 1;
 }
+
 EXPORT_SYMBOL(dibx000_init_i2c_master);
 
 void dibx000_exit_i2c_master(struct dibx000_i2c_master *mst)
 {
 	i2c_del_adapter(&mst->gated_tuner_i2c_adap);
 }
+
 EXPORT_SYMBOL(dibx000_exit_i2c_master);
 
 MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");

drivers/media/dvb/frontends/dibx000_common.h

@@ -12,6 +12,7 @@ struct dibx000_i2c_master {
 #define DIB7000   2
 #define DIB7000P  11
 #define DIB7000MC 12
+#define DIB8000   13
 	u16 device_rev;
 
 	enum dibx000_i2c_interface selected_interface;
@@ -25,9 +26,15 @@ struct dibx000_i2c_master {
 	u16 base_reg;
 };
 
-extern int dibx000_init_i2c_master(struct dibx000_i2c_master *mst, u16 device_rev, struct i2c_adapter *i2c_adap, u8 i2c_addr);
-extern struct i2c_adapter * dibx000_get_i2c_adapter(struct dibx000_i2c_master *mst, enum dibx000_i2c_interface intf, int gating);
+extern int dibx000_init_i2c_master(struct dibx000_i2c_master *mst,
+				   u16 device_rev, struct i2c_adapter *i2c_adap,
+				   u8 i2c_addr);
+extern struct i2c_adapter *dibx000_get_i2c_adapter(struct dibx000_i2c_master
+						   *mst,
+						   enum dibx000_i2c_interface
+						   intf, int gating);
 extern void dibx000_exit_i2c_master(struct dibx000_i2c_master *mst);
+extern void dibx000_reset_i2c_master(struct dibx000_i2c_master *mst);
 
 #define BAND_LBAND 0x01
 #define BAND_UHF   0x02
@@ -41,7 +48,7 @@ extern void dibx000_exit_i2c_master(struct dibx000_i2c_master *mst);
 									(freq_kHz) <= 2000000 ? BAND_LBAND : BAND_SBAND )
 
 struct dibx000_agc_config {
-	/* defines the capabilities of this AGC-setting - using the BAND_-defines*/
+	/* defines the capabilities of this AGC-setting - using the BAND_-defines */
 	u8 band_caps;
 
 	u16 setup;