1 files changed, 873 insertions, 0 deletions

diff --git a/drivers/media/pci/pt3/pt3.c b/drivers/media/pci/pt3/pt3.c
new file mode 100644
index 000000000..7a37e8fe2
--- /dev/null
+++ b/drivers/media/pci/pt3/pt3.c
@@ -0,0 +1,873 @@
+/*
+ * Earthsoft PT3 driver
+ *
+ * Copyright (C) 2014 Akihiro Tsukada <tskd08@gmail.com>
+ *
+ * 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.
+ *
+ *
+ * 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.
+ */
+
+#include <linux/freezer.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/mutex.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/string.h>
+
+#include "dmxdev.h"
+#include "dvbdev.h"
+#include "dvb_demux.h"
+#include "dvb_frontend.h"
+
+#include "pt3.h"
+
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+static bool one_adapter;
+module_param(one_adapter, bool, 0444);
+MODULE_PARM_DESC(one_adapter, "Place FE's together under one adapter.");
+
+static int num_bufs = 4;
+module_param(num_bufs, int, 0444);
+MODULE_PARM_DESC(num_bufs, "Number of DMA buffer (188KiB) per FE.");
+
+
+static const struct i2c_algorithm pt3_i2c_algo = {
+	.master_xfer   = &pt3_i2c_master_xfer,
+	.functionality = &pt3_i2c_functionality,
+};
+
+static const struct pt3_adap_config adap_conf[PT3_NUM_FE] = {
+	{
+		.demod_info = {
+			I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x11),
+		},
+		.tuner_info = {
+			I2C_BOARD_INFO("qm1d1c0042", 0x63),
+		},
+		.tuner_cfg.qm1d1c0042 = {
+			.lpf = 1,
+		},
+		.init_freq = 1049480 - 300,
+	},
+	{
+		.demod_info = {
+			I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x10),
+		},
+		.tuner_info = {
+			I2C_BOARD_INFO("mxl301rf", 0x62),
+		},
+		.init_freq = 515142857,
+	},
+	{
+		.demod_info = {
+			I2C_BOARD_INFO(TC90522_I2C_DEV_SAT, 0x13),
+		},
+		.tuner_info = {
+			I2C_BOARD_INFO("qm1d1c0042", 0x60),
+		},
+		.tuner_cfg.qm1d1c0042 = {
+			.lpf = 1,
+		},
+		.init_freq = 1049480 + 300,
+	},
+	{
+		.demod_info = {
+			I2C_BOARD_INFO(TC90522_I2C_DEV_TER, 0x12),
+		},
+		.tuner_info = {
+			I2C_BOARD_INFO("mxl301rf", 0x61),
+		},
+		.init_freq = 521142857,
+	},
+};
+
+
+struct reg_val {
+	u8 reg;
+	u8 val;
+};
+
+static int
+pt3_demod_write(struct pt3_adapter *adap, const struct reg_val *data, int num)
+{
+	struct i2c_msg msg;
+	int i, ret;
+
+	ret = 0;
+	msg.addr = adap->i2c_demod->addr;
+	msg.flags = 0;
+	msg.len = 2;
+	for (i = 0; i < num; i++) {
+		msg.buf = (u8 *)&data[i];
+		ret = i2c_transfer(adap->i2c_demod->adapter, &msg, 1);
+		if (ret == 0)
+			ret = -EREMOTE;
+		if (ret < 0)
+			return ret;
+	}
+	return 0;
+}
+
+static inline void pt3_lnb_ctrl(struct pt3_board *pt3, bool on)
+{
+	iowrite32((on ? 0x0f : 0x0c), pt3->regs[0] + REG_SYSTEM_W);
+}
+
+static inline struct pt3_adapter *pt3_find_adapter(struct dvb_frontend *fe)
+{
+	struct pt3_board *pt3;
+	int i;
+
+	if (one_adapter) {
+		pt3 = fe->dvb->priv;
+		for (i = 0; i < PT3_NUM_FE; i++)
+			if (pt3->adaps[i]->fe == fe)
+				return pt3->adaps[i];
+	}
+	return container_of(fe->dvb, struct pt3_adapter, dvb_adap);
+}
+
+/*
+ * all 4 tuners in PT3 are packaged in a can module (Sharp VA4M6JC2103).
+ * it seems that they share the power lines and Amp power line and
+ * adaps[3] controls those powers.
+ */
+static int
+pt3_set_tuner_power(struct pt3_board *pt3, bool tuner_on, bool amp_on)
+{
+	struct reg_val rv = { 0x1e, 0x99 };
+
+	if (tuner_on)
+		rv.val |= 0x40;
+	if (amp_on)
+		rv.val |= 0x04;
+	return pt3_demod_write(pt3->adaps[PT3_NUM_FE - 1], &rv, 1);
+}
+
+static int pt3_set_lna(struct dvb_frontend *fe)
+{
+	struct pt3_adapter *adap;
+	struct pt3_board *pt3;
+	u32 val;
+	int ret;
+
+	/* LNA is shared btw. 2 TERR-tuners */
+
+	adap = pt3_find_adapter(fe);
+	val = fe->dtv_property_cache.lna;
+	if (val == LNA_AUTO || val == adap->cur_lna)
+		return 0;
+
+	pt3 = adap->dvb_adap.priv;
+	if (mutex_lock_interruptible(&pt3->lock))
+		return -ERESTARTSYS;
+	if (val)
+		pt3->lna_on_cnt++;
+	else
+		pt3->lna_on_cnt--;
+
+	if (val && pt3->lna_on_cnt <= 1) {
+		pt3->lna_on_cnt = 1;
+		ret = pt3_set_tuner_power(pt3, true, true);
+	} else if (!val && pt3->lna_on_cnt <= 0) {
+		pt3->lna_on_cnt = 0;
+		ret = pt3_set_tuner_power(pt3, true, false);
+	} else
+		ret = 0;
+	mutex_unlock(&pt3->lock);
+	adap->cur_lna = (val != 0);
+	return ret;
+}
+
+static int pt3_set_voltage(struct dvb_frontend *fe, fe_sec_voltage_t volt)
+{
+	struct pt3_adapter *adap;
+	struct pt3_board *pt3;
+	bool on;
+
+	/* LNB power is shared btw. 2 SAT-tuners */
+
+	adap = pt3_find_adapter(fe);
+	on = (volt != SEC_VOLTAGE_OFF);
+	if (on == adap->cur_lnb)
+		return 0;
+	adap->cur_lnb = on;
+	pt3 = adap->dvb_adap.priv;
+	if (mutex_lock_interruptible(&pt3->lock))
+		return -ERESTARTSYS;
+	if (on)
+		pt3->lnb_on_cnt++;
+	else
+		pt3->lnb_on_cnt--;
+
+	if (on && pt3->lnb_on_cnt <= 1) {
+		pt3->lnb_on_cnt = 1;
+		pt3_lnb_ctrl(pt3, true);
+	} else if (!on && pt3->lnb_on_cnt <= 0) {
+		pt3->lnb_on_cnt = 0;
+		pt3_lnb_ctrl(pt3, false);
+	}
+	mutex_unlock(&pt3->lock);
+	return 0;
+}
+
+/* register values used in pt3_fe_init() */
+
+static const struct reg_val init0_sat[] = {
+	{ 0x03, 0x01 },
+	{ 0x1e, 0x10 },
+};
+static const struct reg_val init0_ter[] = {
+	{ 0x01, 0x40 },
+	{ 0x1c, 0x10 },
+};
+static const struct reg_val cfg_sat[] = {
+	{ 0x1c, 0x15 },
+	{ 0x1f, 0x04 },
+};
+static const struct reg_val cfg_ter[] = {
+	{ 0x1d, 0x01 },
+};
+
+/*
+ * pt3_fe_init: initialize demod sub modules and ISDB-T tuners all at once.
+ *
+ * As for demod IC (TC90522) and ISDB-T tuners (MxL301RF),
+ * the i2c sequences for init'ing them are not public and hidden in a ROM,
+ * and include the board specific configurations as well.
+ * They are stored in a lump and cannot be taken out / accessed separately,
+ * thus cannot be moved to the FE/tuner driver.
+ */
+static int pt3_fe_init(struct pt3_board *pt3)
+{
+	int i, ret;
+	struct dvb_frontend *fe;
+
+	pt3_i2c_reset(pt3);
+	ret = pt3_init_all_demods(pt3);
+	if (ret < 0) {
+		dev_warn(&pt3->pdev->dev, "Failed to init demod chips\n");
+		return ret;
+	}
+
+	/* additional config? */
+	for (i = 0; i < PT3_NUM_FE; i++) {
+		fe = pt3->adaps[i]->fe;
+
+		if (fe->ops.delsys[0] == SYS_ISDBS)
+			ret = pt3_demod_write(pt3->adaps[i],
+					      init0_sat, ARRAY_SIZE(init0_sat));
+		else
+			ret = pt3_demod_write(pt3->adaps[i],
+					      init0_ter, ARRAY_SIZE(init0_ter));
+		if (ret < 0) {
+			dev_warn(&pt3->pdev->dev,
+				 "demod[%d] failed in init sequence0\n", i);
+			return ret;
+		}
+		ret = fe->ops.init(fe);
+		if (ret < 0)
+			return ret;
+	}
+
+	usleep_range(2000, 4000);
+	ret = pt3_set_tuner_power(pt3, true, false);
+	if (ret < 0) {
+		dev_warn(&pt3->pdev->dev, "Failed to control tuner module\n");
+		return ret;
+	}
+
+	/* output pin configuration */
+	for (i = 0; i < PT3_NUM_FE; i++) {
+		fe = pt3->adaps[i]->fe;
+		if (fe->ops.delsys[0] == SYS_ISDBS)
+			ret = pt3_demod_write(pt3->adaps[i],
+						cfg_sat, ARRAY_SIZE(cfg_sat));
+		else
+			ret = pt3_demod_write(pt3->adaps[i],
+						cfg_ter, ARRAY_SIZE(cfg_ter));
+		if (ret < 0) {
+			dev_warn(&pt3->pdev->dev,
+				 "demod[%d] failed in init sequence1\n", i);
+			return ret;
+		}
+	}
+	usleep_range(4000, 6000);
+
+	for (i = 0; i < PT3_NUM_FE; i++) {
+		fe = pt3->adaps[i]->fe;
+		if (fe->ops.delsys[0] != SYS_ISDBS)
+			continue;
+		/* init and wake-up ISDB-S tuners */
+		ret = fe->ops.tuner_ops.init(fe);
+		if (ret < 0) {
+			dev_warn(&pt3->pdev->dev,
+				 "Failed to init SAT-tuner[%d]\n", i);
+			return ret;
+		}
+	}
+	ret = pt3_init_all_mxl301rf(pt3);
+	if (ret < 0) {
+		dev_warn(&pt3->pdev->dev, "Failed to init TERR-tuners\n");
+		return ret;
+	}
+
+	ret = pt3_set_tuner_power(pt3, true, true);
+	if (ret < 0) {
+		dev_warn(&pt3->pdev->dev, "Failed to control tuner module\n");
+		return ret;
+	}
+
+	/* Wake up all tuners and make an initial tuning,
+	 * in order to avoid interference among the tuners in the module,
+	 * according to the doc from the manufacturer.
+	 */
+	for (i = 0; i < PT3_NUM_FE; i++) {
+		fe = pt3->adaps[i]->fe;
+		ret = 0;
+		if (fe->ops.delsys[0] == SYS_ISDBT)
+			ret = fe->ops.tuner_ops.init(fe);
+		/* set only when called from pt3_probe(), not resume() */
+		if (ret == 0 && fe->dtv_property_cache.frequency == 0) {
+			fe->dtv_property_cache.frequency =
+						adap_conf[i].init_freq;
+			ret = fe->ops.tuner_ops.set_params(fe);
+		}
+		if (ret < 0) {
+			dev_warn(&pt3->pdev->dev,
+				 "Failed in initial tuning of tuner[%d]\n", i);
+			return ret;
+		}
+	}
+
+	/* and sleep again, waiting to be opened by users. */
+	for (i = 0; i < PT3_NUM_FE; i++) {
+		fe = pt3->adaps[i]->fe;
+		if (fe->ops.tuner_ops.sleep)
+			ret = fe->ops.tuner_ops.sleep(fe);
+		if (ret < 0)
+			break;
+		if (fe->ops.sleep)
+			ret = fe->ops.sleep(fe);
+		if (ret < 0)
+			break;
+		if (fe->ops.delsys[0] == SYS_ISDBS)
+			fe->ops.set_voltage = &pt3_set_voltage;
+		else
+			fe->ops.set_lna = &pt3_set_lna;
+	}
+	if (i < PT3_NUM_FE) {
+		dev_warn(&pt3->pdev->dev, "FE[%d] failed to standby\n", i);
+		return ret;
+	}
+	return 0;
+}
+
+
+static int pt3_attach_fe(struct pt3_board *pt3, int i)
+{
+	struct i2c_board_info info;
+	struct tc90522_config cfg;
+	struct i2c_client *cl;
+	struct dvb_adapter *dvb_adap;
+	int ret;
+
+	info = adap_conf[i].demod_info;
+	cfg = adap_conf[i].demod_cfg;
+	cfg.tuner_i2c = NULL;
+	info.platform_data = &cfg;
+
+	ret = -ENODEV;
+	request_module("tc90522");
+	cl = i2c_new_device(&pt3->i2c_adap, &info);
+	if (!cl || !cl->dev.driver)
+		return -ENODEV;
+	pt3->adaps[i]->i2c_demod = cl;
+	if (!try_module_get(cl->dev.driver->owner))
+		goto err_demod_i2c_unregister_device;
+
+	if (!strncmp(cl->name, TC90522_I2C_DEV_SAT, sizeof(cl->name))) {
+		struct qm1d1c0042_config tcfg;
+
+		tcfg = adap_conf[i].tuner_cfg.qm1d1c0042;
+		tcfg.fe = cfg.fe;
+		info = adap_conf[i].tuner_info;
+		info.platform_data = &tcfg;
+		request_module("qm1d1c0042");
+		cl = i2c_new_device(cfg.tuner_i2c, &info);
+	} else {
+		struct mxl301rf_config tcfg;
+
+		tcfg = adap_conf[i].tuner_cfg.mxl301rf;
+		tcfg.fe = cfg.fe;
+		info = adap_conf[i].tuner_info;
+		info.platform_data = &tcfg;
+		request_module("mxl301rf");
+		cl = i2c_new_device(cfg.tuner_i2c, &info);
+	}
+	if (!cl || !cl->dev.driver)
+		goto err_demod_module_put;
+	pt3->adaps[i]->i2c_tuner = cl;
+	if (!try_module_get(cl->dev.driver->owner))
+		goto err_tuner_i2c_unregister_device;
+
+	dvb_adap = &pt3->adaps[one_adapter ? 0 : i]->dvb_adap;
+	ret = dvb_register_frontend(dvb_adap, cfg.fe);
+	if (ret < 0)
+		goto err_tuner_module_put;
+	pt3->adaps[i]->fe = cfg.fe;
+	return 0;
+
+err_tuner_module_put:
+	module_put(pt3->adaps[i]->i2c_tuner->dev.driver->owner);
+err_tuner_i2c_unregister_device:
+	i2c_unregister_device(pt3->adaps[i]->i2c_tuner);
+err_demod_module_put:
+	module_put(pt3->adaps[i]->i2c_demod->dev.driver->owner);
+err_demod_i2c_unregister_device:
+	i2c_unregister_device(pt3->adaps[i]->i2c_demod);
+
+	return ret;
+}
+
+
+static int pt3_fetch_thread(void *data)
+{
+	struct pt3_adapter *adap = data;
+	ktime_t delay;
+	bool was_frozen;
+
+#define PT3_INITIAL_BUF_DROPS 4
+#define PT3_FETCH_DELAY 10
+#define PT3_FETCH_DELAY_DELTA 2
+
+	pt3_init_dmabuf(adap);
+	adap->num_discard = PT3_INITIAL_BUF_DROPS;
+
+	dev_dbg(adap->dvb_adap.device, "PT3: [%s] started\n",
+		adap->thread->comm);
+	set_freezable();
+	while (!kthread_freezable_should_stop(&was_frozen)) {
+		if (was_frozen)
+			adap->num_discard = PT3_INITIAL_BUF_DROPS;
+
+		pt3_proc_dma(adap);
+
+		delay = ktime_set(0, PT3_FETCH_DELAY * NSEC_PER_MSEC);
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		freezable_schedule_hrtimeout_range(&delay,
+					PT3_FETCH_DELAY_DELTA * NSEC_PER_MSEC,
+					HRTIMER_MODE_REL);
+	}
+	dev_dbg(adap->dvb_adap.device, "PT3: [%s] exited\n",
+		adap->thread->comm);
+	adap->thread = NULL;
+	return 0;
+}
+
+static int pt3_start_streaming(struct pt3_adapter *adap)
+{
+	struct task_struct *thread;
+
+	/* start fetching thread */
+	thread = kthread_run(pt3_fetch_thread, adap, "pt3-ad%i-dmx%i",
+				adap->dvb_adap.num, adap->dmxdev.dvbdev->id);
+	if (IS_ERR(thread)) {
+		int ret = PTR_ERR(thread);
+
+		dev_warn(adap->dvb_adap.device,
+			 "PT3 (adap:%d, dmx:%d): failed to start kthread\n",
+			 adap->dvb_adap.num, adap->dmxdev.dvbdev->id);
+		return ret;
+	}
+	adap->thread = thread;
+
+	return pt3_start_dma(adap);
+}
+
+static int pt3_stop_streaming(struct pt3_adapter *adap)
+{
+	int ret;
+
+	ret = pt3_stop_dma(adap);
+	if (ret)
+		dev_warn(adap->dvb_adap.device,
+			 "PT3: failed to stop streaming of adap:%d/FE:%d\n",
+			 adap->dvb_adap.num, adap->fe->id);
+
+	/* kill the fetching thread */
+	ret = kthread_stop(adap->thread);
+	return ret;
+}
+
+static int pt3_start_feed(struct dvb_demux_feed *feed)
+{
+	struct pt3_adapter *adap;
+
+	if (signal_pending(current))
+		return -EINTR;
+
+	adap = container_of(feed->demux, struct pt3_adapter, demux);
+	adap->num_feeds++;
+	if (adap->thread)
+		return 0;
+	if (adap->num_feeds != 1) {
+		dev_warn(adap->dvb_adap.device,
+			 "%s: unmatched start/stop_feed in adap:%i/dmx:%i\n",
+			 __func__, adap->dvb_adap.num, adap->dmxdev.dvbdev->id);
+		adap->num_feeds = 1;
+	}
+
+	return pt3_start_streaming(adap);
+
+}
+
+static int pt3_stop_feed(struct dvb_demux_feed *feed)
+{
+	struct pt3_adapter *adap;
+
+	adap = container_of(feed->demux, struct pt3_adapter, demux);
+
+	adap->num_feeds--;
+	if (adap->num_feeds > 0 || !adap->thread)
+		return 0;
+	adap->num_feeds = 0;
+
+	return pt3_stop_streaming(adap);
+}
+
+
+static int pt3_alloc_adapter(struct pt3_board *pt3, int index)
+{
+	int ret;
+	struct pt3_adapter *adap;
+	struct dvb_adapter *da;
+
+	adap = kzalloc(sizeof(*adap), GFP_KERNEL);
+	if (!adap)
+		return -ENOMEM;
+
+	pt3->adaps[index] = adap;
+	adap->adap_idx = index;
+
+	if (index == 0 || !one_adapter) {
+		ret = dvb_register_adapter(&adap->dvb_adap, "PT3 DVB",
+				THIS_MODULE, &pt3->pdev->dev, adapter_nr);
+		if (ret < 0) {
+			dev_err(&pt3->pdev->dev,
+				"failed to register adapter dev\n");
+			goto err_mem;
+		}
+		da = &adap->dvb_adap;
+	} else
+		da = &pt3->adaps[0]->dvb_adap;
+
+	adap->dvb_adap.priv = pt3;
+	adap->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING;
+	adap->demux.priv = adap;
+	adap->demux.feednum = 256;
+	adap->demux.filternum = 256;
+	adap->demux.start_feed = pt3_start_feed;
+	adap->demux.stop_feed = pt3_stop_feed;
+	ret = dvb_dmx_init(&adap->demux);
+	if (ret < 0) {
+		dev_err(&pt3->pdev->dev, "failed to init dmx dev\n");
+		goto err_adap;
+	}
+
+	adap->dmxdev.filternum = 256;
+	adap->dmxdev.demux = &adap->demux.dmx;
+	ret = dvb_dmxdev_init(&adap->dmxdev, da);
+	if (ret < 0) {
+		dev_err(&pt3->pdev->dev, "failed to init dmxdev\n");
+		goto err_demux;
+	}
+
+	ret = pt3_alloc_dmabuf(adap);
+	if (ret) {
+		dev_err(&pt3->pdev->dev, "failed to alloc DMA buffers\n");
+		goto err_dmabuf;
+	}
+
+	return 0;
+
+err_dmabuf:
+	pt3_free_dmabuf(adap);
+	dvb_dmxdev_release(&adap->dmxdev);
+err_demux:
+	dvb_dmx_release(&adap->demux);
+err_adap:
+	if (index == 0 || !one_adapter)
+		dvb_unregister_adapter(da);
+err_mem:
+	kfree(adap);
+	pt3->adaps[index] = NULL;
+	return ret;
+}
+
+static void pt3_cleanup_adapter(struct pt3_board *pt3, int index)
+{
+	struct pt3_adapter *adap;
+	struct dmx_demux *dmx;
+
+	adap = pt3->adaps[index];
+	if (adap == NULL)
+		return;
+
+	/* stop demux kthread */
+	if (adap->thread)
+		pt3_stop_streaming(adap);
+
+	dmx = &adap->demux.dmx;
+	dmx->close(dmx);
+	if (adap->fe) {
+		adap->fe->callback = NULL;
+		if (adap->fe->frontend_priv)
+			dvb_unregister_frontend(adap->fe);
+		if (adap->i2c_tuner) {
+			module_put(adap->i2c_tuner->dev.driver->owner);
+			i2c_unregister_device(adap->i2c_tuner);
+		}
+		if (adap->i2c_demod) {
+			module_put(adap->i2c_demod->dev.driver->owner);
+			i2c_unregister_device(adap->i2c_demod);
+		}
+	}
+	pt3_free_dmabuf(adap);
+	dvb_dmxdev_release(&adap->dmxdev);
+	dvb_dmx_release(&adap->demux);
+	if (index == 0 || !one_adapter)
+		dvb_unregister_adapter(&adap->dvb_adap);
+	kfree(adap);
+	pt3->adaps[index] = NULL;
+}
+
+#ifdef CONFIG_PM_SLEEP
+
+static int pt3_suspend(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct pt3_board *pt3 = pci_get_drvdata(pdev);
+	int i;
+	struct pt3_adapter *adap;
+
+	for (i = 0; i < PT3_NUM_FE; i++) {
+		adap = pt3->adaps[i];
+		if (adap->num_feeds > 0)
+			pt3_stop_dma(adap);
+		dvb_frontend_suspend(adap->fe);
+		pt3_free_dmabuf(adap);
+	}
+
+	pt3_lnb_ctrl(pt3, false);
+	pt3_set_tuner_power(pt3, false, false);
+	return 0;
+}
+
+static int pt3_resume(struct device *dev)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	struct pt3_board *pt3 = pci_get_drvdata(pdev);
+	int i, ret;
+	struct pt3_adapter *adap;
+
+	ret = pt3_fe_init(pt3);
+	if (ret)
+		return ret;
+
+	if (pt3->lna_on_cnt > 0)
+		pt3_set_tuner_power(pt3, true, true);
+	if (pt3->lnb_on_cnt > 0)
+		pt3_lnb_ctrl(pt3, true);
+
+	for (i = 0; i < PT3_NUM_FE; i++) {
+		adap = pt3->adaps[i];
+		dvb_frontend_resume(adap->fe);
+		ret = pt3_alloc_dmabuf(adap);
+		if (ret) {
+			dev_err(&pt3->pdev->dev, "failed to alloc DMA bufs\n");
+			continue;
+		}
+		if (adap->num_feeds > 0)
+			pt3_start_dma(adap);
+	}
+
+	return 0;
+}
+
+#endif /* CONFIG_PM_SLEEP */
+
+
+static void pt3_remove(struct pci_dev *pdev)
+{
+	struct pt3_board *pt3;
+	int i;
+
+	pt3 = pci_get_drvdata(pdev);
+	for (i = PT3_NUM_FE - 1; i >= 0; i--)
+		pt3_cleanup_adapter(pt3, i);
+	i2c_del_adapter(&pt3->i2c_adap);
+	kfree(pt3->i2c_buf);
+	pci_iounmap(pt3->pdev, pt3->regs[0]);
+	pci_iounmap(pt3->pdev, pt3->regs[1]);
+	pci_release_regions(pdev);
+	pci_disable_device(pdev);
+	kfree(pt3);
+}
+
+static int pt3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	u8 rev;
+	u32 ver;
+	int i, ret;
+	struct pt3_board *pt3;
+	struct i2c_adapter *i2c;
+
+	if (pci_read_config_byte(pdev, PCI_REVISION_ID, &rev) || rev != 1)
+		return -ENODEV;
+
+	ret = pci_enable_device(pdev);
+	if (ret < 0)
+		return -ENODEV;
+	pci_set_master(pdev);
+
+	ret = pci_request_regions(pdev, DRV_NAME);
+	if (ret < 0)
+		goto err_disable_device;
+
+	ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
+	if (ret == 0)
+		dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
+	else {
+		ret = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+		if (ret == 0)
+			dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
+		else {
+			dev_err(&pdev->dev, "Failed to set DMA mask\n");
+			goto err_release_regions;
+		}
+		dev_info(&pdev->dev, "Use 32bit DMA\n");
+	}
+
+	pt3 = kzalloc(sizeof(*pt3), GFP_KERNEL);
+	if (!pt3) {
+		ret = -ENOMEM;
+		goto err_release_regions;
+	}
+	pci_set_drvdata(pdev, pt3);
+	pt3->pdev = pdev;
+	mutex_init(&pt3->lock);
+	pt3->regs[0] = pci_ioremap_bar(pdev, 0);
+	pt3->regs[1] = pci_ioremap_bar(pdev, 2);
+	if (pt3->regs[0] == NULL || pt3->regs[1] == NULL) {
+		dev_err(&pdev->dev, "Failed to ioremap\n");
+		ret = -ENOMEM;
+		goto err_kfree;
+	}
+
+	ver = ioread32(pt3->regs[0] + REG_VERSION);
+	if ((ver >> 16) != 0x0301) {
+		dev_warn(&pdev->dev, "PT%d, I/F-ver.:%d not supported\n",
+			 ver >> 24, (ver & 0x00ff0000) >> 16);
+		ret = -ENODEV;
+		goto err_iounmap;
+	}
+
+	pt3->num_bufs = clamp_val(num_bufs, MIN_DATA_BUFS, MAX_DATA_BUFS);
+
+	pt3->i2c_buf = kmalloc(sizeof(*pt3->i2c_buf), GFP_KERNEL);
+	if (pt3->i2c_buf == NULL) {
+		ret = -ENOMEM;
+		goto err_iounmap;
+	}
+	i2c = &pt3->i2c_adap;
+	i2c->owner = THIS_MODULE;
+	i2c->algo = &pt3_i2c_algo;
+	i2c->algo_data = NULL;
+	i2c->dev.parent = &pdev->dev;
+	strlcpy(i2c->name, DRV_NAME, sizeof(i2c->name));
+	i2c_set_adapdata(i2c, pt3);
+	ret = i2c_add_adapter(i2c);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to add i2c adapter\n");
+		goto err_i2cbuf;
+	}
+
+	for (i = 0; i < PT3_NUM_FE; i++) {
+		ret = pt3_alloc_adapter(pt3, i);
+		if (ret < 0)
+			break;
+
+		ret = pt3_attach_fe(pt3, i);
+		if (ret < 0)
+			break;
+	}
+	if (i < PT3_NUM_FE) {
+		dev_err(&pdev->dev, "Failed to create FE%d\n", i);
+		goto err_cleanup_adapters;
+	}
+
+	ret = pt3_fe_init(pt3);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to init frontends\n");
+		i = PT3_NUM_FE - 1;
+		goto err_cleanup_adapters;
+	}
+
+	dev_info(&pdev->dev,
+		 "successfully init'ed PT%d (fw:0x%02x, I/F:0x%02x)\n",
+		 ver >> 24, (ver >> 8) & 0xff, (ver >> 16) & 0xff);
+	return 0;
+
+err_cleanup_adapters:
+	while (i >= 0)
+		pt3_cleanup_adapter(pt3, i--);
+	i2c_del_adapter(i2c);
+err_i2cbuf:
+	kfree(pt3->i2c_buf);
+err_iounmap:
+	if (pt3->regs[0])
+		pci_iounmap(pdev, pt3->regs[0]);
+	if (pt3->regs[1])
+		pci_iounmap(pdev, pt3->regs[1]);
+err_kfree:
+	kfree(pt3);
+err_release_regions:
+	pci_release_regions(pdev);
+err_disable_device:
+	pci_disable_device(pdev);
+	return ret;
+
+}
+
+static const struct pci_device_id pt3_id_table[] = {
+	{ PCI_DEVICE_SUB(0x1172, 0x4c15, 0xee8d, 0x0368) },
+	{ },
+};
+MODULE_DEVICE_TABLE(pci, pt3_id_table);
+
+static SIMPLE_DEV_PM_OPS(pt3_pm_ops, pt3_suspend, pt3_resume);
+
+static struct pci_driver pt3_driver = {
+	.name		= DRV_NAME,
+	.probe		= pt3_probe,
+	.remove		= pt3_remove,
+	.id_table	= pt3_id_table,
+
+	.driver.pm	= &pt3_pm_ops,
+};
+
+module_pci_driver(pt3_driver);
+
+MODULE_DESCRIPTION("Earthsoft PT3 Driver");
+MODULE_AUTHOR("Akihiro TSUKADA");
+MODULE_LICENSE("GPL");