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, 451 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/stv6110.c b/drivers/media/dvb-frontends/stv6110.c
new file mode 100644
index 000000000000..20b5fa92c53e
--- /dev/null
+++ b/drivers/media/dvb-frontends/stv6110.c
@@ -0,0 +1,451 @@
+/*
+ * stv6110.c
+ *
+ * Driver for ST STV6110 satellite tuner IC.
+ *
+ * Copyright (C) 2009 NetUP Inc.
+ * Copyright (C) 2009 Igor M. Liplianin <liplianin@netup.ru>
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/dvb/frontend.h>
+
+#include <linux/types.h>
+
+#include "stv6110.h"
+
+static int debug;
+
+struct stv6110_priv {
+	int i2c_address;
+	struct i2c_adapter *i2c;
+
+	u32 mclk;
+	u8 clk_div;
+	u8 gain;
+	u8 regs[8];
+};
+
+#define dprintk(args...) \
+	do { \
+		if (debug) \
+			printk(KERN_DEBUG args); \
+	} while (0)
+
+static s32 abssub(s32 a, s32 b)
+{
+	if (a > b)
+		return a - b;
+	else
+		return b - a;
+};
+
+static int stv6110_release(struct dvb_frontend *fe)
+{
+	kfree(fe->tuner_priv);
+	fe->tuner_priv = NULL;
+	return 0;
+}
+
+static int stv6110_write_regs(struct dvb_frontend *fe, u8 buf[],
+							int start, int len)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	int rc;
+	u8 cmdbuf[len + 1];
+	struct i2c_msg msg = {
+		.addr	= priv->i2c_address,
+		.flags	= 0,
+		.buf	= cmdbuf,
+		.len	= len + 1
+	};
+
+	dprintk("%s\n", __func__);
+
+	if (start + len > 8)
+		return -EINVAL;
+
+	memcpy(&cmdbuf[1], buf, len);
+	cmdbuf[0] = start;
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	rc = i2c_transfer(priv->i2c, &msg, 1);
+	if (rc != 1)
+		dprintk("%s: i2c error\n", __func__);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	return 0;
+}
+
+static int stv6110_read_regs(struct dvb_frontend *fe, u8 regs[],
+							int start, int len)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	int rc;
+	u8 reg[] = { start };
+	struct i2c_msg msg[] = {
+		{
+			.addr	= priv->i2c_address,
+			.flags	= 0,
+			.buf	= reg,
+			.len	= 1,
+		}, {
+			.addr	= priv->i2c_address,
+			.flags	= I2C_M_RD,
+			.buf	= regs,
+			.len	= len,
+		},
+	};
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	rc = i2c_transfer(priv->i2c, msg, 2);
+	if (rc != 2)
+		dprintk("%s: i2c error\n", __func__);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	memcpy(&priv->regs[start], regs, len);
+
+	return 0;
+}
+
+static int stv6110_read_reg(struct dvb_frontend *fe, int start)
+{
+	u8 buf[] = { 0 };
+	stv6110_read_regs(fe, buf, start, 1);
+
+	return buf[0];
+}
+
+static int stv6110_sleep(struct dvb_frontend *fe)
+{
+	u8 reg[] = { 0 };
+	stv6110_write_regs(fe, reg, 0, 1);
+
+	return 0;
+}
+
+static u32 carrier_width(u32 symbol_rate, fe_rolloff_t rolloff)
+{
+	u32 rlf;
+
+	switch (rolloff) {
+	case ROLLOFF_20:
+		rlf = 20;
+		break;
+	case ROLLOFF_25:
+		rlf = 25;
+		break;
+	default:
+		rlf = 35;
+		break;
+	}
+
+	return symbol_rate  + ((symbol_rate * rlf) / 100);
+}
+
+static int stv6110_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	u8 r8, ret = 0x04;
+	int i;
+
+	if ((bandwidth / 2) > 36000000) /*BW/2 max=31+5=36 mhz for r8=31*/
+		r8 = 31;
+	else if ((bandwidth / 2) < 5000000) /* BW/2 min=5Mhz for F=0 */
+		r8 = 0;
+	else /*if 5 < BW/2 < 36*/
+		r8 = (bandwidth / 2) / 1000000 - 5;
+
+	/* ctrl3, RCCLKOFF = 0 Activate the calibration Clock */
+	/* ctrl3, CF = r8 Set the LPF value */
+	priv->regs[RSTV6110_CTRL3] &= ~((1 << 6) | 0x1f);
+	priv->regs[RSTV6110_CTRL3] |= (r8 & 0x1f);
+	stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL3], RSTV6110_CTRL3, 1);
+	/* stat1, CALRCSTRT = 1 Start LPF auto calibration*/
+	priv->regs[RSTV6110_STAT1] |= 0x02;
+	stv6110_write_regs(fe, &priv->regs[RSTV6110_STAT1], RSTV6110_STAT1, 1);
+
+	i = 0;
+	/* Wait for CALRCSTRT == 0 */
+	while ((i < 10) && (ret != 0)) {
+		ret = ((stv6110_read_reg(fe, RSTV6110_STAT1)) & 0x02);
+		mdelay(1);	/* wait for LPF auto calibration */
+		i++;
+	}
+
+	/* RCCLKOFF = 1 calibration done, desactivate the calibration Clock */
+	priv->regs[RSTV6110_CTRL3] |= (1 << 6);
+	stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL3], RSTV6110_CTRL3, 1);
+	return 0;
+}
+
+static int stv6110_init(struct dvb_frontend *fe)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	u8 buf0[] = { 0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e };
+
+	memcpy(priv->regs, buf0, 8);
+	/* K = (Reference / 1000000) - 16 */
+	priv->regs[RSTV6110_CTRL1] &= ~(0x1f << 3);
+	priv->regs[RSTV6110_CTRL1] |=
+				((((priv->mclk / 1000000) - 16) & 0x1f) << 3);
+
+	/* divisor value for the output clock */
+	priv->regs[RSTV6110_CTRL2] &= ~0xc0;
+	priv->regs[RSTV6110_CTRL2] |= (priv->clk_div << 6);
+
+	stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL1], RSTV6110_CTRL1, 8);
+	msleep(1);
+	stv6110_set_bandwidth(fe, 72000000);
+
+	return 0;
+}
+
+static int stv6110_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	u32 nbsteps, divider, psd2, freq;
+	u8 regs[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+
+	stv6110_read_regs(fe, regs, 0, 8);
+	/*N*/
+	divider = (priv->regs[RSTV6110_TUNING2] & 0x0f) << 8;
+	divider += priv->regs[RSTV6110_TUNING1];
+
+	/*R*/
+	nbsteps  = (priv->regs[RSTV6110_TUNING2] >> 6) & 3;
+	/*p*/
+	psd2  = (priv->regs[RSTV6110_TUNING2] >> 4) & 1;
+
+	freq = divider * (priv->mclk / 1000);
+	freq /= (1 << (nbsteps + psd2));
+	freq /= 4;
+
+	*frequency = freq;
+
+	return 0;
+}
+
+static int stv6110_set_frequency(struct dvb_frontend *fe, u32 frequency)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	u8 ret = 0x04;
+	u32 divider, ref, p, presc, i, result_freq, vco_freq;
+	s32 p_calc, p_calc_opt = 1000, r_div, r_div_opt = 0, p_val;
+	s32 srate;
+
+	dprintk("%s, freq=%d kHz, mclk=%d Hz\n", __func__,
+						frequency, priv->mclk);
+
+	/* K = (Reference / 1000000) - 16 */
+	priv->regs[RSTV6110_CTRL1] &= ~(0x1f << 3);
+	priv->regs[RSTV6110_CTRL1] |=
+				((((priv->mclk / 1000000) - 16) & 0x1f) << 3);
+
+	/* BB_GAIN = db/2 */
+	if (fe->ops.set_property && fe->ops.get_property) {
+		srate = c->symbol_rate;
+		dprintk("%s: Get Frontend parameters: srate=%d\n",
+							__func__, srate);
+	} else
+		srate = 15000000;
+
+	priv->regs[RSTV6110_CTRL2] &= ~0x0f;
+	priv->regs[RSTV6110_CTRL2] |= (priv->gain & 0x0f);
+
+	if (frequency <= 1023000) {
+		p = 1;
+		presc = 0;
+	} else if (frequency <= 1300000) {
+		p = 1;
+		presc = 1;
+	} else if (frequency <= 2046000) {
+		p = 0;
+		presc = 0;
+	} else {
+		p = 0;
+		presc = 1;
+	}
+	/* DIV4SEL = p*/
+	priv->regs[RSTV6110_TUNING2] &= ~(1 << 4);
+	priv->regs[RSTV6110_TUNING2] |= (p << 4);
+
+	/* PRESC32ON = presc */
+	priv->regs[RSTV6110_TUNING2] &= ~(1 << 5);
+	priv->regs[RSTV6110_TUNING2] |= (presc << 5);
+
+	p_val = (int)(1 << (p + 1)) * 10;/* P = 2 or P = 4 */
+	for (r_div = 0; r_div <= 3; r_div++) {
+		p_calc = (priv->mclk / 100000);
+		p_calc /= (1 << (r_div + 1));
+		if ((abssub(p_calc, p_val)) < (abssub(p_calc_opt, p_val)))
+			r_div_opt = r_div;
+
+		p_calc_opt = (priv->mclk / 100000);
+		p_calc_opt /= (1 << (r_div_opt + 1));
+	}
+
+	ref = priv->mclk / ((1 << (r_div_opt + 1))  * (1 << (p + 1)));
+	divider = (((frequency * 1000) + (ref >> 1)) / ref);
+
+	/* RDIV = r_div_opt */
+	priv->regs[RSTV6110_TUNING2] &= ~(3 << 6);
+	priv->regs[RSTV6110_TUNING2] |= (((r_div_opt) & 3) << 6);
+
+	/* NDIV_MSB = MSB(divider) */
+	priv->regs[RSTV6110_TUNING2] &= ~0x0f;
+	priv->regs[RSTV6110_TUNING2] |= (((divider) >> 8) & 0x0f);
+
+	/* NDIV_LSB, LSB(divider) */
+	priv->regs[RSTV6110_TUNING1] = (divider & 0xff);
+
+	/* CALVCOSTRT = 1 VCO Auto Calibration */
+	priv->regs[RSTV6110_STAT1] |= 0x04;
+	stv6110_write_regs(fe, &priv->regs[RSTV6110_CTRL1],
+						RSTV6110_CTRL1, 8);
+
+	i = 0;
+	/* Wait for CALVCOSTRT == 0 */
+	while ((i < 10) && (ret != 0)) {
+		ret = ((stv6110_read_reg(fe, RSTV6110_STAT1)) & 0x04);
+		msleep(1); /* wait for VCO auto calibration */
+		i++;
+	}
+
+	ret = stv6110_read_reg(fe, RSTV6110_STAT1);
+	stv6110_get_frequency(fe, &result_freq);
+
+	vco_freq = divider * ((priv->mclk / 1000) / ((1 << (r_div_opt + 1))));
+	dprintk("%s, stat1=%x, lo_freq=%d kHz, vco_frec=%d kHz\n", __func__,
+						ret, result_freq, vco_freq);
+
+	return 0;
+}
+
+static int stv6110_set_params(struct dvb_frontend *fe)
+{
+	struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+	u32 bandwidth = carrier_width(c->symbol_rate, c->rolloff);
+
+	stv6110_set_frequency(fe, c->frequency);
+	stv6110_set_bandwidth(fe, bandwidth);
+
+	return 0;
+}
+
+static int stv6110_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+	struct stv6110_priv *priv = fe->tuner_priv;
+	u8 r8 = 0;
+	u8 regs[] = { 0, 0, 0, 0, 0, 0, 0, 0 };
+	stv6110_read_regs(fe, regs, 0, 8);
+
+	/* CF */
+	r8 = priv->regs[RSTV6110_CTRL3] & 0x1f;
+	*bandwidth = (r8 + 5) * 2000000;/* x2 for ZIF tuner BW/2 = F+5 Mhz */
+
+	return 0;
+}
+
+static struct dvb_tuner_ops stv6110_tuner_ops = {
+	.info = {
+		.name = "ST STV6110",
+		.frequency_min = 950000,
+		.frequency_max = 2150000,
+		.frequency_step = 1000,
+	},
+	.init = stv6110_init,
+	.release = stv6110_release,
+	.sleep = stv6110_sleep,
+	.set_params = stv6110_set_params,
+	.get_frequency = stv6110_get_frequency,
+	.set_frequency = stv6110_set_frequency,
+	.get_bandwidth = stv6110_get_bandwidth,
+	.set_bandwidth = stv6110_set_bandwidth,
+
+};
+
+struct dvb_frontend *stv6110_attach(struct dvb_frontend *fe,
+					const struct stv6110_config *config,
+					struct i2c_adapter *i2c)
+{
+	struct stv6110_priv *priv = NULL;
+	u8 reg0[] = { 0x00, 0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e };
+
+	struct i2c_msg msg[] = {
+		{
+			.addr = config->i2c_address,
+			.flags = 0,
+			.buf = reg0,
+			.len = 9
+		}
+	};
+	int ret;
+
+	/* divisor value for the output clock */
+	reg0[2] &= ~0xc0;
+	reg0[2] |= (config->clk_div << 6);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 1);
+
+	ret = i2c_transfer(i2c, msg, 1);
+
+	if (fe->ops.i2c_gate_ctrl)
+		fe->ops.i2c_gate_ctrl(fe, 0);
+
+	if (ret != 1)
+		return NULL;
+
+	priv = kzalloc(sizeof(struct stv6110_priv), GFP_KERNEL);
+	if (priv == NULL)
+		return NULL;
+
+	priv->i2c_address = config->i2c_address;
+	priv->i2c = i2c;
+	priv->mclk = config->mclk;
+	priv->clk_div = config->clk_div;
+	priv->gain = config->gain;
+
+	memcpy(&priv->regs, &reg0[1], 8);
+
+	memcpy(&fe->ops.tuner_ops, &stv6110_tuner_ops,
+				sizeof(struct dvb_tuner_ops));
+	fe->tuner_priv = priv;
+	printk(KERN_INFO "STV6110 attached on addr=%x!\n", priv->i2c_address);
+
+	return fe;
+}
+EXPORT_SYMBOL(stv6110_attach);
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("ST STV6110 driver");
+MODULE_AUTHOR("Igor M. Liplianin");
+MODULE_LICENSE("GPL");