Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:
 "The first part of the media updates for Kernel 3.7.

  This series contain:

   - A major tree renaming patch series: now, drivers are organized
     internally by their used bus, instead of by V4L2 and/or DVB API,
     providing a cleaner driver location for hybrid drivers that
     implement both APIs, and allowing to cleanup the Kconfig items and
     make them more intuitive for the end user;

   - Media Kernel developers are typically very lazy with their duties
     of keeping the MAINTAINERS entries for their drivers updated.  As
     now the tree is more organized, we're doing an effort to add/update
     those entries for the drivers that aren't currently orphan;

   - Several DVB USB drivers got moved to a new DVB USB v2 core; the new
     core fixes several bugs (as the existing one that got bitroted).
     Now, suspend/resume finally started to work fine (at least with
     some devices - we should expect more work with regards to it);

   - added multistream support for DVB-T2, and unified the API for
     DVB-S2 and ISDB-S.  Backward binary support is preserved;

   - as usual, a few new drivers, some V4L2 core improvements and lots
     of drivers improvements and fixes.

  There are some points to notice on this series:

   1) you should expect a trivial merge conflict on your tree, with the
      removal of Documentation/feature-removal-schedule.txt: this series
      would be adding two additional entries there.  I opted to not
      rebase it due to this recent change;

   2) With regards to the PCTV 520e udev-related breakage, I opted to
      fix it in a way that the patches can be backported to 3.5 even
      without your firmware fix patch.  This way, Greg doesn't need to
      rush backporting your patch (as there are still the firmware cache
      and firmware path customization issues to be addressed there).

      I'll send later a patch (likely after the end of the merge window)
      reverting the rest of the DRX-K async firmware request, fully
      restoring its original behaviour to allow media drivers to
      initialize everything serialized as before for 3.7 and upper.

   3) I'm planning to work on this weekend to test the DMABUF patches
      for V4L2.  The patches are on my queue for several Kernel cycles,
      but, up to now, there is/was no way to test the series locally.

      I have some concerns about this particular changeset with regards
      to security issues, and with regards to the replacement of the old
      VIDIOC_OVERLAY ioctl's that is broken on modern systems, due to
      GPU drivers change.  The Overlay API allows direct PCI2PCI
      transfers from a media capture card into the GPU framebuffer, but
      its API is crappy.  Also, the only existing X11 driver that
      implements it requires a XV extension that is not available
      anymore on modern drivers.  The DMABUF can do the same thing, but
      with it is promising to be a properly-designed API.  If I can
      successfully test this series and be happy with it, I should be
      asking you to pull them next week."

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (717 commits)
  em28xx: regression fix: use DRX-K sync firmware requests on em28xx
  drxk: allow loading firmware synchrousnously
  em28xx: Make all em28xx extensions to be initialized asynchronously
  [media] tda18271: properly report read errors in tda18271_get_id
  [media] tda18271: delay IR & RF calibration until init() if delay_cal is set
  [media] MAINTAINERS: add Michael Krufky as tda827x maintainer
  [media] MAINTAINERS: add Michael Krufky as tda8290 maintainer
  [media] MAINTAINERS: add Michael Krufky as cxusb maintainer
  [media] MAINTAINERS: add Michael Krufky as lg2160 maintainer
  [media] MAINTAINERS: add Michael Krufky as lgdt3305 maintainer
  [media] MAINTAINERS: add Michael Krufky as mxl111sf maintainer
  [media] MAINTAINERS: add Michael Krufky as mxl5007t maintainer
  [media] MAINTAINERS: add Michael Krufky as tda18271 maintainer
  [media] s5p-tv: Report only multi-plane capabilities in vidioc_querycap
  [media] s5p-mfc: Fix misplaced return statement in s5p_mfc_suspend()
  [media] exynos-gsc: Add missing static storage class specifiers
  [media] exynos-gsc: Remove <linux/version.h> header file inclusion
  [media] s5p-fimc: Fix incorrect condition in fimc_lite_reqbufs()
  [media] s5p-tv: Fix potential NULL pointer dereference error
  [media] s5k6aa: Fix possible NULL pointer dereference
  ...

1 files changed, 520 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/zl10036.c b/drivers/media/dvb-frontends/zl10036.c
new file mode 100644
index 000000000000..0903d461b8fa
--- /dev/null
+++ b/drivers/media/dvb-frontends/zl10036.c
@@ -0,0 +1,520 @@
+/**
+ * Driver for Zarlink zl10036 DVB-S silicon tuner
+ *
+ * Copyright (C) 2006 Tino Reichardt
+ * Copyright (C) 2007-2009 Matthias Schwarzott <zzam@gentoo.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ **
+ * The data sheet for this tuner can be found at:
+ *    http://www.mcmilk.de/projects/dvb-card/datasheets/ZL10036.pdf
+ *
+ * This one is working: (at my Avermedia DVB-S Pro)
+ * - zl10036 (40pin, FTA)
+ *
+ * A driver for zl10038 should be very similar.
+ */
+
+#include <linux/module.h>
+#include <linux/dvb/frontend.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "zl10036.h"
+
+static int zl10036_debug;
+#define dprintk(level, args...) \
+	do { if (zl10036_debug & level) printk(KERN_DEBUG "zl10036: " args); \
+	} while (0)
+
+#define deb_info(args...)  dprintk(0x01, args)
+#define deb_i2c(args...)  dprintk(0x02, args)
+
+struct zl10036_state {
+	struct i2c_adapter *i2c;
+	const struct zl10036_config *config;
+	u32 frequency;
+	u8 br, bf;
+};
+
+
+/* This driver assumes the tuner is driven by a 10.111MHz Cristal */
+#define _XTAL 10111
+
+/* Some of the possible dividers:
+ *   64, (write 0x05 to reg), freq step size   158kHz
+ *   10, (write 0x0a to reg), freq step size 1.011kHz (used here)
+ *    5, (write 0x09 to reg), freq step size 2.022kHz
+ */
+
+#define _RDIV 10
+#define _RDIV_REG 0x0a
+#define _FR   (_XTAL/_RDIV)
+
+#define STATUS_POR 0x80 /* Power on Reset */
+#define STATUS_FL  0x40 /* Frequency & Phase Lock */
+
+/* read/write for zl10036 and zl10038 */
+
+static int zl10036_read_status_reg(struct zl10036_state *state)
+{
+	u8 status;
+	struct i2c_msg msg[1] = {
+		{ .addr = state->config->tuner_address, .flags = I2C_M_RD,
+		  .buf = &status, .len = sizeof(status) },
+	};
+
+	if (i2c_transfer(state->i2c, msg, 1) != 1) {
+		printk(KERN_ERR "%s: i2c read failed at addr=%02x\n",
+			__func__, state->config->tuner_address);
+		return -EIO;
+	}
+
+	deb_i2c("R(status): %02x  [FL=%d]\n", status,
+		(status & STATUS_FL) ? 1 : 0);
+	if (status & STATUS_POR)
+		deb_info("%s: Power-On-Reset bit enabled - "
+			"need to initialize the tuner\n", __func__);
+
+	return status;
+}
+
+static int zl10036_write(struct zl10036_state *state, u8 buf[], u8 count)
+{
+	struct i2c_msg msg[1] = {
+		{ .addr = state->config->tuner_address, .flags = 0,
+		  .buf = buf, .len = count },
+	};
+	u8 reg = 0;
+	int ret;
+
+	if (zl10036_debug & 0x02) {
+		/* every 8bit-value satisifes this!
+		 * so only check for debug log */
+		if ((buf[0] & 0x80) == 0x00)
+			reg = 2;
+		else if ((buf[0] & 0xc0) == 0x80)
+			reg = 4;
+		else if ((buf[0] & 0xf0) == 0xc0)
+			reg = 6;
+		else if ((buf[0] & 0xf0) == 0xd0)
+			reg = 8;
+		else if ((buf[0] & 0xf0) == 0xe0)
+			reg = 10;
+		else if ((buf[0] & 0xf0) == 0xf0)
+			reg = 12;
+
+		deb_i2c("W(%d):", reg);
+		{
+			int i;
+			for (i = 0; i < count; i++)
+				printk(KERN_CONT " %02x", buf[i]);
+			printk(KERN_CONT "\n");
+		}
+	}
+
+	ret = i2c_transfer(state->i2c, msg, 1);
+	if (ret != 1) {
+		printk(KERN_ERR "%s: i2c error, ret=%d\n", __func__, ret);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int zl10036_release(struct dvb_frontend *fe)
+{
+	struct zl10036_state *state = fe->tuner_priv;
+
+	fe->tuner_priv = NULL;
+	kfree(state);
+
+	return 0;
+}
+
+static int zl10036_sleep(struct dvb_frontend *fe)
+{
+	struct zl10036_state *state = fe->tuner_priv;
+	u8 buf[] = { 0xf0, 0x80 }; /* regs 12/13 */
+	int ret;
+
+	deb_info("%s\n", __func__);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
+
+	ret = zl10036_write(state, buf, sizeof(buf));
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
+
+	return ret;
+}
+
+/**
+ * register map of the ZL10036/ZL10038
+ *
+ * reg[default] content
+ *  2[0x00]:   0 | N14 | N13 | N12 | N11 | N10 |  N9 |  N8
+ *  3[0x00]:  N7 |  N6 |  N5 |  N4 |  N3 |  N2 |  N1 |  N0
+ *  4[0x80]:   1 |   0 | RFG | BA1 | BA0 | BG1 | BG0 | LEN
+ *  5[0x00]:  P0 |  C1 |  C0 |  R4 |  R3 |  R2 |  R1 |  R0
+ *  6[0xc0]:   1 |   1 |   0 |   0 | RSD |   0 |   0 |   0
+ *  7[0x20]:  P1 | BF6 | BF5 | BF4 | BF3 | BF2 | BF1 |   0
+ *  8[0xdb]:   1 |   1 |   0 |   1 |   0 |  CC |   1 |   1
+ *  9[0x30]: VSD |  V2 |  V1 |  V0 |  S3 |  S2 |  S1 |  S0
+ * 10[0xe1]:   1 |   1 |   1 |   0 |   0 | LS2 | LS1 | LS0
+ * 11[0xf5]:  WS | WH2 | WH1 | WH0 | WL2 | WL1 | WL0 | WRE
+ * 12[0xf0]:   1 |   1 |   1 |   1 |   0 |   0 |   0 |   0
+ * 13[0x28]:  PD | BR4 | BR3 | BR2 | BR1 | BR0 | CLR |  TL
+ */
+
+static int zl10036_set_frequency(struct zl10036_state *state, u32 frequency)
+{
+	u8 buf[2];
+	u32 div, foffset;
+
+	div = (frequency + _FR/2) / _FR;
+	state->frequency = div * _FR;
+
+	foffset = frequency - state->frequency;
+
+	buf[0] = (div >> 8) & 0x7f;
+	buf[1] = (div >> 0) & 0xff;
+
+	deb_info("%s: ftodo=%u fpriv=%u ferr=%d div=%u\n", __func__,
+		frequency, state->frequency, foffset, div);
+
+	return zl10036_write(state, buf, sizeof(buf));
+}
+
+static int zl10036_set_bandwidth(struct zl10036_state *state, u32 fbw)
+{
+	/* fbw is measured in kHz */
+	u8 br, bf;
+	int ret;
+	u8 buf_bf[] = {
+		0xc0, 0x00, /*   6/7: rsd=0 bf=0 */
+	};
+	u8 buf_br[] = {
+		0xf0, 0x00, /* 12/13: br=0xa clr=0 tl=0*/
+	};
+	u8 zl10036_rsd_off[] = { 0xc8 }; /* set RSD=1 */
+
+	/* ensure correct values */
+	if (fbw > 35000)
+		fbw = 35000;
+	if (fbw <  8000)
+		fbw =  8000;
+
+#define _BR_MAXIMUM (_XTAL/575) /* _XTAL / 575kHz = 17 */
+
+	/* <= 28,82 MHz */
+	if (fbw <= 28820) {
+		br = _BR_MAXIMUM;
+	} else {
+		/**
+		 *  f(bw)=34,6MHz f(xtal)=10.111MHz
+		 *  br = (10111/34600) * 63 * 1/K = 14;
+		 */
+		br = ((_XTAL * 21 * 1000) / (fbw * 419));
+	}
+
+	/* ensure correct values */
+	if (br < 4)
+		br = 4;
+	if (br > _BR_MAXIMUM)
+		br = _BR_MAXIMUM;
+
+	/*
+	 * k = 1.257
+	 * bf = fbw/_XTAL * br * k - 1 */
+
+	bf = (fbw * br * 1257) / (_XTAL * 1000) - 1;
+
+	/* ensure correct values */
+	if (bf > 62)
+		bf = 62;
+
+	buf_bf[1] = (bf << 1) & 0x7e;
+	buf_br[1] = (br << 2) & 0x7c;
+	deb_info("%s: BW=%d br=%u bf=%u\n", __func__, fbw, br, bf);
+
+	if (br != state->br) {
+		ret = zl10036_write(state, buf_br, sizeof(buf_br));
+		if (ret < 0)
+			return ret;
+	}
+
+	if (bf != state->bf) {
+		ret = zl10036_write(state, buf_bf, sizeof(buf_bf));
+		if (ret < 0)
+			return ret;
+
+		/* time = br/(32* fxtal) */
+		/* minimal sleep time to be calculated
+		 * maximum br is 63 -> max time = 2 /10 MHz = 2e-7 */
+		msleep(1);
+
+		ret = zl10036_write(state, zl10036_rsd_off,
+			sizeof(zl10036_rsd_off));
+		if (ret < 0)
+			return ret;
+	}
+
+	state->br = br;
+	state->bf = bf;
+
+	return 0;
+}
+
+static int zl10036_set_gain_params(struct zl10036_state *state,
+	int c)
+{
+	u8 buf[2];
+	u8 rfg, ba, bg;
+
+	/* default values */
+	rfg = 0; /* enable when using an lna */
+	ba = 1;
+	bg = 1;
+
+	/* reg 4 */
+	buf[0] = 0x80 | ((rfg << 5) & 0x20)
+		| ((ba  << 3) & 0x18) | ((bg  << 1) & 0x06);
+
+	if (!state->config->rf_loop_enable)
+		buf[0] |= 0x01;
+
+	/* P0=0 */
+	buf[1] = _RDIV_REG | ((c << 5) & 0x60);
+
+	deb_info("%s: c=%u rfg=%u ba=%u bg=%u\n", __func__, c, rfg, ba, bg);
+	return zl10036_write(state, buf, sizeof(buf));
+}
+
+static int zl10036_set_params(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+	struct zl10036_state *state = fe->tuner_priv;
+	int ret = 0;
+	u32 frequency = p->frequency;
+	u32 fbw;
+	int i;
+	u8 c;
+
+	/* ensure correct values
+	 * maybe redundant as core already checks this */
+	if ((frequency < fe->ops.info.frequency_min)
+	||  (frequency > fe->ops.info.frequency_max))
+		return -EINVAL;
+
+	/**
+	 * alpha = 1.35 for dvb-s
+	 * fBW = (alpha*symbolrate)/(2*0.8)
+	 * 1.35 / (2*0.8) = 27 / 32
+	 */
+	fbw = (27 * p->symbol_rate) / 32;
+
+	/* scale to kHz */
+	fbw /= 1000;
+
+	/* Add safe margin of 3MHz */
+	fbw += 3000;
+
+	/* setting the charge pump - guessed values */
+	if (frequency < 950000)
+		return -EINVAL;
+	else if (frequency < 1250000)
+		c = 0;
+	else if (frequency < 1750000)
+		c = 1;
+	else if (frequency < 2175000)
+		c = 2;
+	else
+		return -EINVAL;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
+
+	ret = zl10036_set_gain_params(state, c);
+	if (ret < 0)
+		goto error;
+
+	ret = zl10036_set_frequency(state, p->frequency);
+	if (ret < 0)
+		goto error;
+
+	ret = zl10036_set_bandwidth(state, fbw);
+	if (ret < 0)
+		goto error;
+
+	/* wait for tuner lock - no idea if this is really needed */
+	for (i = 0; i < 20; i++) {
+		ret = zl10036_read_status_reg(state);
+		if (ret < 0)
+			goto error;
+
+		/* check Frequency & Phase Lock Bit */
+		if (ret & STATUS_FL)
+			break;
+
+		msleep(10);
+	}
+
+error:
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
+
+	return ret;
+}
+
+static int zl10036_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct zl10036_state *state = fe->tuner_priv;
+
+	*frequency = state->frequency;
+
+	return 0;
+}
+
+static int zl10036_init_regs(struct zl10036_state *state)
+{
+	int ret;
+	int i;
+
+	/* could also be one block from reg 2 to 13 and additional 10/11 */
+	u8 zl10036_init_tab[][2] = {
+		{ 0x04, 0x00 },		/*   2/3: div=0x400 - arbitrary value */
+		{ 0x8b, _RDIV_REG },	/*   4/5: rfg=0 ba=1 bg=1 len=? */
+					/*        p0=0 c=0 r=_RDIV_REG */
+		{ 0xc0, 0x20 },		/*   6/7: rsd=0 bf=0x10 */
+		{ 0xd3, 0x40 },		/*   8/9: from datasheet */
+		{ 0xe3, 0x5b },		/* 10/11: lock window level */
+		{ 0xf0, 0x28 },		/* 12/13: br=0xa clr=0 tl=0*/
+		{ 0xe3, 0xf9 },		/* 10/11: unlock window level */
+	};
+
+	/* invalid values to trigger writing */
+	state->br = 0xff;
+	state->bf = 0xff;
+
+	if (!state->config->rf_loop_enable)
+		zl10036_init_tab[1][0] |= 0x01;
+
+	deb_info("%s\n", __func__);
+
+	for (i = 0; i < ARRAY_SIZE(zl10036_init_tab); i++) {
+		ret = zl10036_write(state, zl10036_init_tab[i], 2);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int zl10036_init(struct dvb_frontend *fe)
+{
+	struct zl10036_state *state = fe->tuner_priv;
+	int ret = 0;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
+
+	ret = zl10036_read_status_reg(state);
+	if (ret < 0)
+		return ret;
+
+	/* Only init if Power-on-Reset bit is set? */
+	ret = zl10036_init_regs(state);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
+
+	return ret;
+}
+
+static struct dvb_tuner_ops zl10036_tuner_ops = {
+	.info = {
+		.name = "Zarlink ZL10036",
+		.frequency_min = 950000,
+		.frequency_max = 2175000
+	},
+	.init = zl10036_init,
+	.release = zl10036_release,
+	.sleep = zl10036_sleep,
+	.set_params = zl10036_set_params,
+	.get_frequency = zl10036_get_frequency,
+};
+
+struct dvb_frontend *zl10036_attach(struct dvb_frontend *fe,
+				    const struct zl10036_config *config,
+				    struct i2c_adapter *i2c)
+{
+	struct zl10036_state *state;
+	int ret;
+
+	if (!config) {
+		printk(KERN_ERR "%s: no config specified", __func__);
+		return NULL;
+	}
+
+	state = kzalloc(sizeof(struct zl10036_state), GFP_KERNEL);
+	if (!state)
+		return NULL;
+
+	state->config = config;
+	state->i2c = i2c;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
+
+	ret = zl10036_read_status_reg(state);
+	if (ret < 0) {
+		printk(KERN_ERR "%s: No zl10036 found\n", __func__);
+		goto error;
+	}
+
+	ret = zl10036_init_regs(state);
+	if (ret < 0) {
+		printk(KERN_ERR "%s: tuner initialization failed\n",
+			__func__);
+		goto error;
+	}
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
+
+	fe->tuner_priv = state;
+
+	memcpy(&fe->ops.tuner_ops, &zl10036_tuner_ops,
+		sizeof(struct dvb_tuner_ops));
+	printk(KERN_INFO "%s: tuner initialization (%s addr=0x%02x) ok\n",
+		__func__, fe->ops.tuner_ops.info.name, config->tuner_address);
+
+	return fe;
+
+error:
+	kfree(state);
+	return NULL;
+}
+EXPORT_SYMBOL(zl10036_attach);
+
+module_param_named(debug, zl10036_debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+MODULE_DESCRIPTION("DVB ZL10036 driver");
+MODULE_AUTHOR("Tino Reichardt");
+MODULE_AUTHOR("Matthias Schwarzott");
+MODULE_LICENSE("GPL");