[media] dvb-usb: split out common parts of dibusb

Tha ARM randconfig builds came up with another rare build failure
for the dib3000mc driver, when dvb-usb-dibusb-mb is built-in and
dib3000mc is a loadable module:

ERROR: "dibusb_dib3000mc_frontend_attach" [drivers/media/usb/dvb-usb/dvb-usb-nova-t-usb2.ko] undefined!
ERROR: "dibusb_dib3000mc_tuner_attach" [drivers/media/usb/dvb-usb/dvb-usb-nova-t-usb2.ko] undefined!

Apparently this used to be a valid configuration (build-time, not
run-time), but broke as part of a cleanup.

I tried reverting the cleanup, but saw that the code was still wrong
then. This tries to fix the code properly, by moving the problematic
functions into a new file that now is built as a loadable module or
built-in, whichever is correct for a particular configuration. It fixes
the regression as well as the runtime problem that already existed.

The new module dependency chain is now:

   dvb-usb-{dibusb_mc,a800,dib0700,umt-010,gp8psk}   dvb-usb-dibusb-mb
         |                        |                   |          |
   dvb-usb-dibusb-mc-common       |        ___________|          |
         |               |        |        |                     |
   dib3000mc (frontend)  |        |        |         dib3000mb (frontend)
                         |        |        |
                         |        |        |
                        dvb-usb-dibusb-common

I have also checked the two other files that were changed in the original
cleanup, and found them to be correct in either version, so I do not
touch that part.

As this is a rather obscure bug, there is no need for backports.

Fixes: 028c70ff42783 ("[media] dvb-usb/dvb-usb-v2: use IS_ENABLED")

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

1 files changed, 168 insertions, 0 deletions

diff --git a/drivers/media/usb/dvb-usb/dibusb-mc-common.c b/drivers/media/usb/dvb-usb/dibusb-mc-common.c
new file mode 100644
index 000000000000..d66f56cc46a5
--- /dev/null
+++ b/drivers/media/usb/dvb-usb/dibusb-mc-common.c
@@ -0,0 +1,168 @@
+/* Common methods for dibusb-based-receivers.
+ *
+ * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
+ *
+ *	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, version 2.
+ *
+ * see Documentation/dvb/README.dvb-usb for more information
+ */
+
+#include <linux/kconfig.h>
+#include "dibusb.h"
+
+/* 3000MC/P stuff */
+// Config Adjacent channels  Perf -cal22
+static struct dibx000_agc_config dib3000p_mt2060_agc_config = {
+	.band_caps = BAND_VHF | BAND_UHF,
+	.setup     = (1 << 8) | (5 << 5) | (1 << 4) | (1 << 3) | (0 << 2) | (2 << 0),
+
+	.agc1_max = 48497,
+	.agc1_min = 23593,
+	.agc2_max = 46531,
+	.agc2_min = 24904,
+
+	.agc1_pt1 = 0x65,
+	.agc1_pt2 = 0x69,
+
+	.agc1_slope1 = 0x51,
+	.agc1_slope2 = 0x27,
+
+	.agc2_pt1 = 0,
+	.agc2_pt2 = 0x33,
+
+	.agc2_slope1 = 0x35,
+	.agc2_slope2 = 0x37,
+};
+
+static struct dib3000mc_config stk3000p_dib3000p_config = {
+	&dib3000p_mt2060_agc_config,
+
+	.max_time     = 0x196,
+	.ln_adc_level = 0x1cc7,
+
+	.output_mpeg2_in_188_bytes = 1,
+
+	.agc_command1 = 1,
+	.agc_command2 = 1,
+};
+
+static struct dibx000_agc_config dib3000p_panasonic_agc_config = {
+	.band_caps = BAND_VHF | BAND_UHF,
+	.setup     = (1 << 8) | (5 << 5) | (1 << 4) | (1 << 3) | (0 << 2) | (2 << 0),
+
+	.agc1_max = 56361,
+	.agc1_min = 22282,
+	.agc2_max = 47841,
+	.agc2_min = 36045,
+
+	.agc1_pt1 = 0x3b,
+	.agc1_pt2 = 0x6b,
+
+	.agc1_slope1 = 0x55,
+	.agc1_slope2 = 0x1d,
+
+	.agc2_pt1 = 0,
+	.agc2_pt2 = 0x0a,
+
+	.agc2_slope1 = 0x95,
+	.agc2_slope2 = 0x1e,
+};
+
+static struct dib3000mc_config mod3000p_dib3000p_config = {
+	&dib3000p_panasonic_agc_config,
+
+	.max_time     = 0x51,
+	.ln_adc_level = 0x1cc7,
+
+	.output_mpeg2_in_188_bytes = 1,
+
+	.agc_command1 = 1,
+	.agc_command2 = 1,
+};
+
+int dibusb_dib3000mc_frontend_attach(struct dvb_usb_adapter *adap)
+{
+	if (le16_to_cpu(adap->dev->udev->descriptor.idVendor) == USB_VID_LITEON &&
+	    le16_to_cpu(adap->dev->udev->descriptor.idProduct) ==
+			USB_PID_LITEON_DVB_T_WARM) {
+		msleep(1000);
+	}
+
+	adap->fe_adap[0].fe = dvb_attach(dib3000mc_attach,
+					 &adap->dev->i2c_adap,
+					 DEFAULT_DIB3000P_I2C_ADDRESS,
+					 &mod3000p_dib3000p_config);
+	if ((adap->fe_adap[0].fe) == NULL)
+		adap->fe_adap[0].fe = dvb_attach(dib3000mc_attach,
+						 &adap->dev->i2c_adap,
+						 DEFAULT_DIB3000MC_I2C_ADDRESS,
+						 &mod3000p_dib3000p_config);
+	if ((adap->fe_adap[0].fe) != NULL) {
+		if (adap->priv != NULL) {
+			struct dibusb_state *st = adap->priv;
+			st->ops.pid_parse = dib3000mc_pid_parse;
+			st->ops.pid_ctrl  = dib3000mc_pid_control;
+		}
+		return 0;
+	}
+	return -ENODEV;
+}
+EXPORT_SYMBOL(dibusb_dib3000mc_frontend_attach);
+
+static struct mt2060_config stk3000p_mt2060_config = {
+	0x60
+};
+
+int dibusb_dib3000mc_tuner_attach(struct dvb_usb_adapter *adap)
+{
+	struct dibusb_state *st = adap->priv;
+	u8 a,b;
+	u16 if1 = 1220;
+	struct i2c_adapter *tun_i2c;
+
+	// First IF calibration for Liteon Sticks
+	if (le16_to_cpu(adap->dev->udev->descriptor.idVendor) == USB_VID_LITEON &&
+	    le16_to_cpu(adap->dev->udev->descriptor.idProduct) == USB_PID_LITEON_DVB_T_WARM) {
+
+		dibusb_read_eeprom_byte(adap->dev,0x7E,&a);
+		dibusb_read_eeprom_byte(adap->dev,0x7F,&b);
+
+		if (a == 0x00)
+			if1 += b;
+		else if (a == 0x80)
+			if1 -= b;
+		else
+			warn("LITE-ON DVB-T: Strange IF1 calibration :%2X %2X\n", a, b);
+
+	} else if (le16_to_cpu(adap->dev->udev->descriptor.idVendor) == USB_VID_DIBCOM &&
+		   le16_to_cpu(adap->dev->udev->descriptor.idProduct) == USB_PID_DIBCOM_MOD3001_WARM) {
+		u8 desc;
+		dibusb_read_eeprom_byte(adap->dev, 7, &desc);
+		if (desc == 2) {
+			a = 127;
+			do {
+				dibusb_read_eeprom_byte(adap->dev, a, &desc);
+				a--;
+			} while (a > 7 && (desc == 0xff || desc == 0x00));
+			if (desc & 0x80)
+				if1 -= (0xff - desc);
+			else
+				if1 += desc;
+		}
+	}
+
+	tun_i2c = dib3000mc_get_tuner_i2c_master(adap->fe_adap[0].fe, 1);
+	if (dvb_attach(mt2060_attach, adap->fe_adap[0].fe, tun_i2c, &stk3000p_mt2060_config, if1) == NULL) {
+		/* not found - use panasonic pll parameters */
+		if (dvb_attach(dvb_pll_attach, adap->fe_adap[0].fe, 0x60, tun_i2c, DVB_PLL_ENV57H1XD5) == NULL)
+			return -ENOMEM;
+	} else {
+		st->mt2060_present = 1;
+		/* set the correct parameters for the dib3000p */
+		dib3000mc_set_config(adap->fe_adap[0].fe, &stk3000p_dib3000p_config);
+	}
+	return 0;
+}
+EXPORT_SYMBOL(dibusb_dib3000mc_tuner_attach);